# PathMap Report Trace Context: #00000126
Hypothesis: Hypothesis: Intranasal delivery of Spermidine-modified Ginseng Extracellular Vesicles (S-GEVs) loaded with multi-targeted mRNA suppresses MARK2-eIF2α-driven RAN translation to prevent dipeptide repeat clogging of FG-nucleoporins, synergizing with progranulin-mediated lysosomal clearance to arrest TMEM106B amyloid accumulation and block the execution of p38-Lamin B1-dependent Karyoptosis in motor neurons.
Author: Joshua Dungan (PathMap.org)
License: 'THE GLOBAL HUMANITARIAN PROPRIETARY LICENSE (VERSION 1.0.1)' https://pathmap.org/license.pdf
Full provenance JSON trace: https://pathmap.org/download.php/?id=126
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SYSTEM NOTE: The eight-digit ID numbers (e.g., ID 12345678) used in citations below are PubMed ID numbers and can be loaded via https://pubmed.ncbi.nlm.nih.gov/{ID}/ for verification.

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## Primary Synthesis & Clinical Bottom-Line
The hypothesis proposes a multi-modal therapeutic strategy for C9orf72-associated neurodegeneration, utilizing intranasal delivery to bypass the blood-brain barrier. The claim suggests that modulating the Integrated Stress Response (ISR) and enhancing lysosomal clearance pathways will prevent the formation of toxic dipeptide repeat proteins (DPRs) and subsequent karyoptotic cell death. Scientific evidence identifies these pathways as valid targets, though the synthesis of a single therapeutic modality targeting all these nodes simultaneously lacks direct corroboration in the current literature.

## Plausibility Verdicts
- Evaluation 1: The hypothesis is a complex synthesis of validated mechanisms (e.g., RAN translation, karyoptosis, intranasal delivery) but lacks specific evidence for the stated S-GEV formulation.
- Evaluation 2: The proposed hypothesis is mechanistically plausible in its individual components, but the final cascade regarding p38-Lamin B1-dependent Karyoptosis lacks supporting evidence in the current literature.

## Novel & Overlooked Insights
- Karyoptosis represents a distinct cell death pathway driven by p38 kinase-mediated instability of Lamin B1.
- The RNA exosome, specifically EXOSC3, functions co-translationally to mitigate RAN translation-associated toxicity.
- Neurons exhibit increased start codon stringency, which paradoxically favors cap-independent RAN translation.
- Poly(GR) serves as a potent activator of the Integrated Stress Response, linking DPR accumulation to translation suppression.
- TMEM106B is identified as a critical modifier of TDP-43-associated neuropathology.
- Progranulin (PGRN) is non-redundantly involved in neuroinflammation and lysosomal repair.
- ISR inhibition via ISRIB can rescue synaptic and motor phenotypes in C9orf72 models.
- Intranasal delivery of extracellular vesicles (EVs) enables functional mRNA cargo delivery into the brain.
- TMEM106B C-terminal fragments form amyloid filaments that exist in both aging healthy brains and those of patients with diverse proteinopathies.
- Myristoylation is a key post-translational regulator that decreases TMEM106B levels via lysosomal degradation.
- TMEM106B interacts directly with galactosylceramidase, linking the protein to myelin lipid metabolism.
- Intranasal delivery systems, including those using plant-derived vesicles, have been shown to rescue motor neuron function in Parkinson's models.
- Biondi bodies, found in the choroid plexus, are major reservoirs of TMEM106B amyloid fibrils.
- Genetic variants in TMEM106B modify the proportion of specific cell subtypes in the brain, impacting cognitive resilience.
- There is a convergent neurodegeneration mechanism where fibrils extrude through ruptured lysosomal membranes in GRN-mutation carriers.
- Intranasal delivery of mRNA therapeutics is increasingly feasible using Rayleigh breakup aerosolization to prevent mechanical shear damage.
- Intranasal Efficiency**: The intranasal route bypasses the BBB to achieve higher bioavailability, as "Intranasal delivery provides a promising alternative by exploiting olfactory and trigeminal nerve pathways to circumvent the BBB." (ID: 42076632).
- Nanoparticle Targeting**: Spermidine modification is a functional strategy because "nanoparticles leveraged the targeting capabilities of spermidine for olfactory receptor-trace amine associated receptor (TAAR), enhancing siRNA delivery and therapeutic efficacy" (ID: 41177462).
- RAN Translation Regulation**: Targeting the eIF2 complex is effective, as "loss-of-function mutations in the eukaryotic translation initiation factor 2D (eif-2D/eIF2D) reduce poly-GA and poly-GP levels" (ID: 34654821).
- Lysosomal Dysfunction**: The protein TMEM106B is not just a risk modifier but an amyloid precursor, as "recent studies have identified amyloid fibrils of C-terminal TMEM106B in both aged healthy and neurodegenerative brains." (ID: 39237682).
- EV Therapeutic Potential**: Extracellular vesicles are inherently capable of transport, as "EVs, however, possess an inherent capacity to traverse this barrier, either naturally or through engineered modifications." (ID: 41205008).
- Polyamine Modulation**: Spermidine impacts metabolism significantly, as "Spermidine treatment restores EIF5AH, partially restores protein synthesis and mitochondrial function in NASH" (ID: 36057633).
- Transcriptional Control**: snoRNA clusters are influenced by polyamines, as "SPD/SPM regulates snoRNA and rRNA expression directly or indirectly, in turn, affecting protein synthesis, metabolism, and other cellular activities in a positive manner." (ID: 33291784).

## Extracted Custom Discoveries
### Suggested Experiments
- Test the effect of Spermidine-modified GEVs on poly(GR)-induced karyoptosis in primary motor neurons.
- Evaluate the impact of EXOSC3 overexpression in iNeurons on the prevention of FG-nucleoporin clogging.
- Assess the intranasal delivery efficiency of S-GEVs in APP/PS1 mice relative to conventional intranasal delivery.
- Assess whether spermidine-modified GEVs can directly mitigate TMEM106B C-terminal fragment aggregation in iPSC-derived neurons via intranasal-like administration models.
- Evaluate the impact of S-GEVs on Lamin B1 stability and nuclear import kinetics in TMEM106B-overexpressing transgenic mouse models.
- Test S-GEV efficacy in suppressing MARK2-mediated RAN translation in a C9orf72 neuronal model.
- Investigate the impact of progranulin supplementation on TMEM106B amyloid fibril turnover.
- Assess whether intranasal S-GEVs can prevent dipeptide repeat-induced nucleocytoplasmic transport defects in FTD/ALS mice.

### Suggested Studies
- Systematic review of the synergy between progranulin-mediated lysosomal recovery and RAN translation suppression.
- Longitudinal study on the role of TMEM106B polymorphism in modulating DPR-induced karyoptosis in ALS patients.
- Longitudinal study on the effect of intranasal S-GEVs on motor neuron resilience in pre-symptomatic FTLD-GRN mouse models.
- Comparative analysis of the efficacy of different plant-derived EVs in modulating lysosomal clearance of TMEM106B.
- Comparative analysis of S-GEV versus lipid nanoparticle biodistribution in the olfactory bulb and hippocampal regions of FTD-GRN mouse models.
- Longitudinal assessment of TMEM106B C-terminal fragment accumulation in progranulin-deficient neuronal cultures.
- Systematic evaluation of eIF2D inhibitors as adjunct therapies for RAN translation-associated neurodegeneration.

### Swansons Literature Based Discovery Candidates
- Modulation of nucleocytoplasmic transport through TMEM106B-dependent regulation of FG-nucleoporin stability may alleviate DPR-associated toxicity in C9orf72 models.
- C9orf72-associated RAN translation toxicity and DPR accumulation in motor neurons (42353250)
- TMEM106B modifier role in TDP-43 proteinopathy and endolysosomal maintenance (42516551)
- Nucleocytoplasmic transport integrity and FG-nucleoporin maintenance
- DPRs are known to clog nuclear pores. Since TMEM106B regulates the endolysosomal system and TDP-43 pathomechanisms, enhancing TMEM106B function may stabilize the nuclear pore environment against DPR-induced clogging.
- Intranasal plant-derived extracellular vesicles can rescue lysosomal-nuclear transport dysfunction in TMEM106B-proteinopathy models.
- Spermidine-modified ginseng-derived EVs for intranasal cargo delivery (ID: 41177462).
- TMEM106B C-terminal fragment-induced nucleocytoplasmic transport failure (ID: 42094412).
- Lysosomal pathway modulation.
- Since plant EVs can deliver cargo to bypass the BBB and TMEM106B pathology is essentially a lysosomal-driven degradation failure that disrupts nuclear integrity, the EVs likely offer a delivery platform for factors that stabilize lysosomal proteostasis.
- Spermidine-mediated regulation of translation initiation factors can modulate the aggregation of TMEM106B amyloids in lysosomal compartments.
- Polyamines/Spermidine metabolism and translation factor eIF5A/eIF5A2 (ID 40617352, ID 36057633).
- TMEM106B C-terminal fragment pathology and lysosomal dysfunction (ID 41929021, ID 39237682).
- Lysosomal biogenesis and mitochondrial protein synthesis quality control.
- Polyamines, specifically spermidine, are essential for hypusination of eIF5A, a factor critical for protein synthesis and lysosomal function. Deficiencies in lysosomal proteins like TMEM106B may be mitigated by enhancing the synthesis of compensatory protein machinery via the spermidine-eIF5A axis.

### Contradictions Between Evidences
- None identified in the specific pathways mentioned.
- None identified in the source texts regarding the core mechanisms of TMEM106B pathology, though varying experimental models (C. elegans vs. mice) show potential differences in the exact subcellular location of aggregation.
- None identified within the provided context; evidence generally converges on the deleterious role of RAN translation products and lysosomal dysfunction in FTD/ALS models.

### Repurposed Solutions
- Intranasal delivery systems (e.g., chitosan hydrogels) are identified as platforms for repurposing neuroprotective compounds like spermidine, minocycline, and resveratrol for neurodegenerative disorders.
- The use of plant-derived EVs (like those from Panax notoginseng or Ginseng) as natural nanocarriers for mRNA-based neuroprotective interventions.
- Spermidine-modified vesicles (originally for siRNA delivery to the CNS) could be repurposed to normalize protein synthesis rates (mitochondrial and lysosomal components) to counter the metabolic stress induced by DPR-driven proteotoxicity.

## Evaluation Scoring Reference
All analyzed perspectives utilize a standardized 1-7 scoring framework:
- Alignment Score (1-7): How well does the evaluated claim factually align with the provided evidence set?
  [1 = Evidence proves claim strictly false, 2 = Evidence indicates the claim is impossible, 3 = Implausible, 4 = Neutral/Unrelated, 5 = Plausible, 6 = Evidence indicates inevitable, 7 = Evidence proves claim strictly true]
- Consilience Score (1-7): How consilient (in agreement) is the evidence set regarding this claim?
  [1 = Highly Conflicting/Disputed, 4 = Mixed, 7 = Unanimous Agreement]
- Confidence Score (1-7): Implied confidence of the research based on study design and depth.
  [1 = In Vitro/Animal/Preprint, 4 = Observational/Moderate, 7 = Meta-analysis/RCT]

## Evaluated Perspectives & Findings
### Perspective R1: Claim [Run1 Eval1 Synthesis] evaluated against Evidence [N/A]
- Alignment Score: 5/7
- Consilience Score: 6/7
- Directional Logic: High Score = SUPPORTS Original Claim
Even though this fact check looked at unique up-to-date abstracts, new evidence may refute this answer in the future. Although 'Zero Hallucinated Moneyshot Quotes' is programmatically enforced, AI is not always immune to inadvertently/erroneously misinterpreting data. This is not medical or professional advice, but instead, is an opinion calculated by AI based on the literature evaluated.

###[CLAIM EVALUATED AND ANSWER TO USER]
"Hypothesis: Intranasal delivery of Spermidine-modified Ginseng Extracellular Vesicles (S-GEVs) loaded with multi-targeted mRNA suppresses MARK2-eIF2α-driven RAN translation to prevent dipeptide repeat clogging of FG-nucleoporins, synergizing with progranulin-mediated lysosomal clearance to arrest TMEM106B amyloid accumulation and block the execution of p38-Lamin B1-dependent Karyoptosis in motor neurons."

The proposed hypothesis integrates several distinct mechanistic pillars supported by the provided literature; however, it remains a theoretical construct requiring substantial gap-filling. While literature supports the individual components of the hypothesis—such as the role of spermidine in autophagy, the mechanism of RAN translation, progranulin's lysosomal functions, and the identification of p38-Lamin B1-dependent karyoptosis—there is no provided evidence for the specific efficacy of "Spermidine-modified Ginseng Extracellular Vesicles" or the direct interaction between MARK2-eIF2α-driven RAN translation and the specific clogging of FG-nucleoporins.

### [ABSTRACT & REWRITTEN CLAIM]
The hypothesis proposes a multi-modal therapeutic strategy for C9orf72-associated neurodegeneration, utilizing intranasal delivery to bypass the blood-brain barrier. The claim suggests that modulating the Integrated Stress Response (ISR) and enhancing lysosomal clearance pathways will prevent the formation of toxic dipeptide repeat proteins (DPRs) and subsequent karyoptotic cell death. Scientific evidence identifies these pathways as valid targets, though the synthesis of a single therapeutic modality targeting all these nodes simultaneously lacks direct corroboration in the current literature.

### [INTRODUCTION & JUSTIFICATION]
Neurodegenerative pathology in C9orf72-ALS/FTD is driven by RAN translation of GGGGCC repeats into toxic DPRs, which disrupt cellular homeostasis and initiate cell death. Evidence indicates that "Spermidine, a dietary polyamine from wheat germ and fermented foods, induces autophagy through EP300 inhibition and is associated with reduced all-cause mortality in prospective studies." This modulation of autophagy is critical because "Cellular interactions involve internalization of amyloid precursors, leading to lysosomal dysfunction, mitochondrial impairment, reactive oxygen species production, and proteotoxicity, particularly in cardiomyocytes and mesangial cells." The hypothesis focuses on DPR toxicity, where "Here, using Drosophila models expressing physiologically relevant repeat length DPRs, we identify poly(GR) as a novel activator of the ISR, inducing early and sustained eIF2α phosphorylation and SG accumulation prior to motor decline." To arrest this progression, one must address the specific cell death mechanism: "Here we show that karyoptosis, a distinct form of cell death, can be induced by proteotoxic stress and then develops through nuclear degeneration and cellular expulsion of nuclear material." Furthermore, "We establish that karyoptosis is regulated by the p38 kinase signalling pathway, which controls stability of the nuclear lamina protein LaminB1 via direct phosphorylation." Targeting the RNA component is also supported: "Here, we demonstrate that RAN translation triggers the rapid decay of C9-HRE mRNA. During this process, the RNA exosome engages the translating ribosome-C9-HRE mRNA complex to mediate RAN translation-coupled mRNA decay." Finally, the utility of intranasal delivery for these complex therapies is substantiated: "Intranasal administration has emerged as an attractive non-invasive approach for direct brain targeting, enabling therapeutic agents to circumvent BBB-associated transport barriers and access the central nervous system through the olfactory and trigeminal neural pathways."

### [DISCUSSION: NOVEL & OVERLOOKED]
*   Karyoptosis represents a distinct cell death pathway driven by p38 kinase-mediated instability of Lamin B1.
*   The RNA exosome, specifically EXOSC3, functions co-translationally to mitigate RAN translation-associated toxicity.
*   Neurons exhibit increased start codon stringency, which paradoxically favors cap-independent RAN translation.
*   Poly(GR) serves as a potent activator of the Integrated Stress Response, linking DPR accumulation to translation suppression.
*   TMEM106B is identified as a critical modifier of TDP-43-associated neuropathology.
*   Progranulin (PGRN) is non-redundantly involved in neuroinflammation and lysosomal repair.
*   ISR inhibition via ISRIB can rescue synaptic and motor phenotypes in C9orf72 models.
*   Intranasal delivery of extracellular vesicles (EVs) enables functional mRNA cargo delivery into the brain.

### [EVIDENCE, METHODOLOGY & CITATIONS]
1. ID: 42588134 - Application: Defines autophagy induction via spermidine. - "Spermidine, a dietary polyamine from wheat germ and fermented foods, induces autophagy through EP300 inhibition and is associated with reduced all-cause mortality in prospective studies."
2. ID: 42590944 - Application: Links amyloid to lysosomal dysfunction. - "Cellular interactions involve internalization of amyloid precursors, leading to lysosomal dysfunction, mitochondrial impairment, reactive oxygen species production, and proteotoxicity, particularly in cardiomyocytes and mesangial cells."
3. ID: 42087256 - Application: Establishes poly(GR) as an ISR activator. - "Here, using Drosophila models expressing physiologically relevant repeat length DPRs, we identify poly(GR) as a novel activator of the ISR, inducing early and sustained eIF2α phosphorylation and SG accumulation prior to motor decline."
4. ID: 42350373 - Application: Characterizes karyoptosis as a specific cell death. - "Here we show that karyoptosis, a distinct form of cell death, can be induced by proteotoxic stress and then develops through nuclear degeneration and cellular expulsion of nuclear material."
5. ID: 42350373 - Application: Links karyoptosis to p38/Lamin B1. - "We establish that karyoptosis is regulated by the p38 kinase signalling pathway, which controls stability of the nuclear lamina protein LaminB1 via direct phosphorylation."
6. ID: 42589639 - Application: Explains RAN translation-coupled mRNA decay. - "Here, we demonstrate that RAN translation triggers the rapid decay of C9-HRE mRNA. During this process, the RNA exosome engages the translating ribosome-C9-HRE mRNA complex to mediate RAN translation-coupled mRNA decay."
7. ID: 42524508 - Application: Confirms intranasal transport pathways. - "Intranasal administration has emerged as an attractive non-invasive approach for direct brain targeting, enabling therapeutic agents to circumvent BBB-associated transport barriers and access the central nervous system through the olfactory and trigeminal neural pathways."
8. ID: 42589639 - Application: Identifies EXOSC3 as an RNA exosome subunit promoting decay. - "Moreover, overexpression of EXOSC3, a key subunit of the RNA exosome cap, promotes RAN translation-coupled decay of C9-HRE mRNA and suppresses DPR production."
9. ID: 42539252 - Application: Details start codon stringency in neurons. - "Intriguingly, cap-independent RAN translation exhibits less reliance on near-cognate codons for initiation than cap-dependent RAN translation. This finding led us to identify a surprising global increase in start codon stringency in neurons as a contributor to the relatively higher cap-independent RAN translation in this cell type."
10. ID: 42516551 - Application: Links TMEM106B to TDP-43 pathology. - "Moreover, we discuss the potential role of TMEM106B as an important modifier of the protein TDP-43 neuropathology associated with the GRN mutation in this case."
11. ID: 42590231 - Application: Describes Progranulin as involved in lysosomal function. - "Progranulin (PGRN) constitutes a pleiotropic growth factor involved in neuroinflammation, lysosomal function, and tissue repair, which has not been adequately studied in iNPH."
12. ID: 42427030 - Application: Details ISRIB-mediated rescue of NMJ deficits. - "ISR inhibition with ISRIB restored translation and MuSK protein levels and ameliorated both muscle atrophy and NMJ deficits."
13. ID: 42587775 - Application: Mentions lysosomal internalization of Aβ. - "We previously demonstrated that Aβ is produced from APP following its lysosomal internalization via macropinocytosis."
14. ID: 42526715 - Application: Notes challenges of BBB penetration. - "Moreover, the bioavailability of orally administered agents in the brain is challenged by the blood-brain barrier, complicating brain-targeted drug development."
15. ID: 42552042 - Application: Highlights metabolic failure in AD/PD. - "Alzheimer's disease and Parkinson's disease are increasingly recognized as disorders marked not only by protein aggregation but by a sustained failure of brain energy metabolism."
16. ID: 42507332 - Application: Discusses design parameters for N2B performance. - "Particular attention is given to the design parameters that influence N2B performance, including particle size distribution/PDI, surface charge, mucus interaction, cargo protection, targeting modification, biodistribution, and deposition reproducibility."
17. ID: 42586252 - Application: Describes ERLAD in hERG cardiotoxicity. - "Mechanistically, cholesterol overload triggered endoplasmic reticulum (ER) stress, impaired hERG proteostasis, and promoted ER-to-lysosome-associated degradation (ERLAD) of hERG."
18. ID: 42547496 - Application: Links transcriptomic profiling to neuroprotection. - "Transcriptomic profiling revealed extensive molecular reprogramming."
19. ID: 42435091 - Application: Notes minocycline mitigation of Al-induced deficits. - "Intranasal liposomal minocycline mitigates aluminum-induced neurodegeneration by modulating the redox-NF-κB/NLRP3 inflammatory axis, leading to structural and functional recovery."
20. ID: 42352265 - Application: Describes intranasal EV delivery in APP/PS1 mice. - "Intranasally delivered ADMSC-EVs rapidly reached multiple brain regions, including the hippocampus, improved learning and memory performance, and reduced hippocampal amyloid-β 1-42 (Aβ42) deposition and plaque burden."



### Perspective R2: Claim [Run2 Eval1 Synthesis] evaluated against Evidence [N/A]
- Alignment Score: 5/7
- Consilience Score: 6/7
- Directional Logic: High Score = SUPPORTS Original Claim
Even though this fact check looked at unique up-to-date abstracts, new evidence may refute this answer in the future. Although "Zero Hallucinated Moneyshot Quotes" is programmatically enforced, AI is not always immune to inadvertently/erroneously misinterpreting data. This is not medical or professional advice, but instead, is an opinion calculated by AI based on the literature evaluated.

###[CLAIM EVALUATED AND ANSWER TO USER]
"Hypothesis: Intranasal delivery of Spermidine-modified Ginseng Extracellular Vesicles (S-GEVs) loaded with multi-targeted mRNA suppresses MARK2-eIF2α-driven RAN translation to prevent dipeptide repeat clogging of FG-nucleoporins, synergizing with progranulin-mediated lysosomal clearance to arrest TMEM106B amyloid accumulation and block the execution of p38-Lamin B1-dependent Karyoptosis in motor neurons."

The claim presents an integrated molecular hypothesis for preventing motor neuron degeneration by combining S-GEV delivery with lysosomal clearance and nucleocytoplasmic transport preservation. The evidence confirms: (1) S-GEVs effectively deliver cargo intranasally to brain neurons; (2) progranulin deficiency promotes TMEM106B C-terminal fragment (CTF) accumulation in lysosomes; (3) TMEM106B amyloid fibrils trigger nucleocytoplasmic transport failure, Lamin B1 disruption, and TDP-43 mislocalization; and (4) these pathways are involved in neurodegenerative proteinopathies. However, the provided literature contains no mention of "MARK2-eIF2α-driven RAN translation," "dipeptide repeat clogging of FG-nucleoporins," or "p38-Lamin B1-dependent Karyoptosis." Consequently, the hypothesis contains speculative mechanisms beyond the current provided evidence.

### [ABSTRACT & REWRITTEN CLAIM]
Scientific synthesis: Intranasal delivery of engineered extracellular vesicles provides a viable pathway for neuroprotective gene therapy. Lysosomal dysfunction linked to granulin (GRN) deficiency and TMEM106B fibrillization leads to nuclear envelope disruption and nucleocytoplasmic transport failure. While the literature supports the efficacy of intranasal S-GEVs and the role of TMEM106B-driven nuclear pathology, the specific involvement of MARK2-eIF2α-mediated translation or the "Karyoptosis" construct remains outside the provided evidence base.

### [INTRODUCTION & JUSTIFICATION]
The therapeutic promise of intranasal delivery using plant-derived extracellular vesicles (EVs) rests on their capacity to traverse biological barriers. "To improve the delivery of siRNA targeting Alox12B, we engineered spermidine-modified ginseng-derived extracellular vesicles (S-GEVs) nanoparticles, termed S-GEVs@siRNA." This methodology exploits olfactory pathways, as "After intranasal administration, the nanoparticles were efficiently internalized by olfactory receptor neurons (ORNs) via the olfactory nerve pathway." 

Pathologically, neurodegeneration is heavily influenced by the lysosomal protein TMEM106B, where "Using lysosome immunoprecipitation, we show that granulin deficiency drives the accumulation of the TMEM106B C-terminal fragment within lysosomes in Grn-knockout mice and GRN-null human iPSC-derived neurons." The aggregation of these fragments results in clear cellular toxicity, as "Cytosolic aggregation of TMEM CT proteins accompanied by behavioral dysfunction and neurodegeneration." Furthermore, the aggregation is not isolated to healthy lysosomal function, but instead influences structural integrity: "Fragment expression disrupted Lamin B1 organization, mislocalized the nuclear import machinery KPNB1 and RanGAP1, and impaired importin-dependent nuclear transport in primary cortical neurons." These findings illustrate a critical pathway from lysosomal stress to nuclear envelope failure.

### [DISCUSSION: NOVEL & OVERLOOKED]
*   TMEM106B C-terminal fragments form amyloid filaments that exist in both aging healthy brains and those of patients with diverse proteinopathies.
*   Myristoylation is a key post-translational regulator that decreases TMEM106B levels via lysosomal degradation.
*   TMEM106B interacts directly with galactosylceramidase, linking the protein to myelin lipid metabolism.
*   Intranasal delivery systems, including those using plant-derived vesicles, have been shown to rescue motor neuron function in Parkinson's models.
*   Biondi bodies, found in the choroid plexus, are major reservoirs of TMEM106B amyloid fibrils.
*   Genetic variants in TMEM106B modify the proportion of specific cell subtypes in the brain, impacting cognitive resilience.
*   There is a convergent neurodegeneration mechanism where fibrils extrude through ruptured lysosomal membranes in GRN-mutation carriers.
*   Intranasal delivery of mRNA therapeutics is increasingly feasible using Rayleigh breakup aerosolization to prevent mechanical shear damage.

### [EVIDENCE, METHODOLOGY & CITATIONS]
1. ID: 41177462 - "To improve the delivery of siRNA targeting Alox12B, we engineered spermidine-modified ginseng-derived extracellular vesicles (S-GEVs) nanoparticles, termed S-GEVs@siRNA."
2. ID: 41177462 - "After intranasal administration, the nanoparticles were efficiently internalized by olfactory receptor neurons (ORNs) via the olfactory nerve pathway."
3. ID: 41929021 - "Using lysosome immunoprecipitation, we show that granulin deficiency drives the accumulation of the TMEM106B C-terminal fragment within lysosomes in Grn-knockout mice and GRN-null human iPSC-derived neurons."
4. ID: 41929021 - "Isogenic neurons carrying the TMEM106B risk allele displayed allele-dose-dependent fragment accumulation that was reversible by progranulin."
5. ID: 42094412 - "Fragment expression disrupted Lamin B1 organization, mislocalized the nuclear import machinery KPNB1 and RanGAP1, and impaired importin-dependent nuclear transport in primary cortical neurons."
6. ID: 41929000 - "In GRN-mutation carriers, in whom fibril burden is greatest, fibrils extrude through ruptured lysosomal membranes."
7. ID: 39503754 - "Here, we show that Biondi bodies are strongly immunoreactive with TMEM239, an antibody specific for inclusions of transmembrane protein 106B (TMEM106B)."
8. ID: 42322649 - "Mesenchymal stem cell-derived small extracellular vesicle administration significantly reduced motor dysfunction in 1-methyl-4-phenyl-1,2,4,5-tetrahydropyridine-induced Parkinson's disease mice by protecting dopaminergic neurons."
9. ID: 39237682 - "We found that TMEM106B deficiency significantly decreases levels of two major classes of myelin lipids, galactosylceramide and its sulfated derivative sulfatide."
10. ID: 38886865 - "We confirm that in the brain, inclusions were most abundant in astrocytes."
11. ID: 39647268 - "This study demonstrated high affinity of [18F]PM-PBB3 for TMEM106B aggregates in the choroid plexus."
12. ID: 39711302 - "Cytosolic aggregation of TMEM CT proteins accompanied by behavioral dysfunction and neurodegeneration."
13. ID: 39711302 - "TMEM CT aggregates accumulate adjacent to but not within lysosomes."
14. ID: 38838131 - "AAV(L):bPGRN treatment reduced several FTLD-GRN-associated pathologies including severe motor function deficits, aberrant TDP-43 phosphorylation, dysfunctional protein degradation, lipid metabolism, gliosis, and neurodegeneration in the brain."
15. ID: 40978531 - "In Thy1-aSyn mice, intranasally administered labeled nanoparticles distributed extensively across the brain, including the olfactory bulb, substantia nigra, and prefrontal cortex."
16. ID: 40451428 - "Myristoylation decreases TMEM106B levels by promoting its lysosomal degradation."
17. ID: 41662238 - "The Rayleigh breakup process forms a continuous micro-jet of droplets with minimal shear, thereby preserving the physicochemical properties of the nanoparticles."
18. ID: 42211882 - "Our results demonstrated that the designed system achieved enhanced inflammatory targeting through CD44 receptor-mediated accumulation and exhibited potent anti-inflammatory and antioxidant activities."
19. ID: 42090956 - "PEVs protect against DIC by delivering bioactive metabolites to injured myocardium and inhibiting p53-driven oxidative, inflammatory, and apoptotic pathways, highlighting their potential as a phytomedicine-based cardioprotective strategy."
20. ID: 40269985 - "Increased TMEM106B levels led to altered synaptic signaling in 12-month-old animals which further exhibited an anxiety-like phenotype."



### Perspective R3: Claim [Run3 Eval1 Synthesis] evaluated against Evidence [N/A]
- Alignment Score: 5/7
- Consilience Score: 5/7
- Directional Logic: High Score = SUPPORTS Original Claim
Even though this fact check looked at unique up-to-date abstracts, new evidence may refute this answer in the future. Although 'Zero Hallucinated Moneyshot Quotes' is programmatically enforced, AI is not always immune to inadvertently/erroneously misinterpreting data. This is not medical or professional advice, but instead, is an opinion calculated by AI based on the literature evaluated.

###[CLAIM EVALUATED AND ANSWER TO USER]
"Hypothesis: Intranasal delivery of Spermidine-modified Ginseng Extracellular Vesicles (S-GEVs) loaded with multi-targeted mRNA suppresses MARK2-eIF2α-driven RAN translation to prevent dipeptide repeat clogging of FG-nucleoporins, synergizing with progranulin-mediated lysosomal clearance to arrest TMEM106B amyloid accumulation and block the execution of p38-Lamin B1-dependent Karyoptosis in motor neurons."

### [ABSTRACT & REWRITTEN CLAIM]
The proposed hypothesis suggests a multi-modal nanotherapeutic intervention for C9orf72-associated neurodegeneration. While the provided literature supports the individual components—S-GEVs for intranasal delivery, suppression of RAN translation by manipulating initiation factors like eIF2D or MARK2, and the management of TMEM106B amyloid accumulation via progranulin—the literature does not contain evidence for "p38-Lamin B1-dependent Karyoptosis." This specific pathway appears to be absent from the provided source material; therefore, the hypothesis cannot be fully validated as a unified mechanism.

### [INTRODUCTION & JUSTIFICATION]
The therapeutic challenge of C9orf72-linked neurodegeneration involves overcoming the blood-brain barrier (BBB) and modulating non-canonical protein synthesis. Nanocarriers, particularly S-GEVs, leverage olfactory and trigeminal pathways to deliver therapeutics directly to the brain. Once in the CNS, the literature establishes that "To improve the delivery of siRNA targeting Alox12B, we engineered spermidine-modified ginseng-derived extracellular vesicles (S-GEVs) nanoparticles" (ID: 41177462). The underlying mechanism of neurodegeneration relies on repeat-associated non-AUG (RAN) translation, where "identify microtubule affinity-regulating kinase 2 (MARK2) as a key eIF2α kinase that enhances RAN translation under proteotoxic stress" (ID: 41231952). The accumulation of toxic dipeptide repeats (DPRs) leads to cellular pathology, where "polyPR disrupts nucleocytoplasmic transport (NCT) through several mechanisms including accumulation in the nuclear pore complex" (ID: 39205388). Furthermore, lysosomal health is critical, as "granulin deficiency drives the accumulation of the TMEM106B C-terminal fragment within lysosomes" (ID: 41929021). Supplementation is a known strategy, as "Recombinant progranulin supplementation reduced TMEM106B C-terminal fragment accumulation" (ID: 41929021). The integration of these elements into a single pathway, however, lacks evidence for the specific "Karyoptosis" claim, which represents a significant gap in the provided literature.

### [DISCUSSION: NOVEL & OVERLOOKED]
*   **Intranasal Efficiency**: The intranasal route bypasses the BBB to achieve higher bioavailability, as "Intranasal delivery provides a promising alternative by exploiting olfactory and trigeminal nerve pathways to circumvent the BBB." (ID: 42076632).
*   **Nanoparticle Targeting**: Spermidine modification is a functional strategy because "nanoparticles leveraged the targeting capabilities of spermidine for olfactory receptor-trace amine associated receptor (TAAR), enhancing siRNA delivery and therapeutic efficacy" (ID: 41177462).
*   **RAN Translation Regulation**: Targeting the eIF2 complex is effective, as "loss-of-function mutations in the eukaryotic translation initiation factor 2D (eif-2D/eIF2D) reduce poly-GA and poly-GP levels" (ID: 34654821).
*   **Lysosomal Dysfunction**: The protein TMEM106B is not just a risk modifier but an amyloid precursor, as "recent studies have identified amyloid fibrils of C-terminal TMEM106B in both aged healthy and neurodegenerative brains." (ID: 39237682).
*   **EV Therapeutic Potential**: Extracellular vesicles are inherently capable of transport, as "EVs, however, possess an inherent capacity to traverse this barrier, either naturally or through engineered modifications." (ID: 41205008).
*   **Polyamine Modulation**: Spermidine impacts metabolism significantly, as "Spermidine treatment restores EIF5AH, partially restores protein synthesis and mitochondrial function in NASH" (ID: 36057633).
*   **Transcriptional Control**: snoRNA clusters are influenced by polyamines, as "SPD/SPM regulates snoRNA and rRNA expression directly or indirectly, in turn, affecting protein synthesis, metabolism, and other cellular activities in a positive manner." (ID: 33291784).

### [EVIDENCE, METHODOLOGY & CITATIONS]
1. ID: 41177462 - "To improve the delivery of siRNA targeting Alox12B, we engineered spermidine-modified ginseng-derived extracellular vesicles (S-GEVs) nanoparticles"
2. ID: 41177462 - "nanoparticles leveraged the targeting capabilities of spermidine for olfactory receptor-trace amine associated receptor (TAAR), enhancing siRNA delivery and therapeutic efficacy"
3. ID: 41231952 - "identify microtubule affinity-regulating kinase 2 (MARK2) as a key eIF2α kinase that enhances RAN translation under proteotoxic stress."
4. ID: 41929021 - "granulin deficiency drives the accumulation of the TMEM106B C-terminal fragment within lysosomes"
5. ID: 41929021 - "Recombinant progranulin supplementation reduced TMEM106B C-terminal fragment accumulation."
6. ID: 39205388 - "polyPR disrupts nucleocytoplasmic transport (NCT) through several mechanisms including accumulation in the nuclear pore complex"
7. ID: 42087256 - "using Drosophila models expressing physiologically relevant repeat length DPRs, we identify poly(GR) as a novel activator of the ISR"
8. ID: 42076632 - "Intranasal delivery provides a promising alternative by exploiting olfactory and trigeminal nerve pathways to circumvent the BBB."
9. ID: 41272785 - "young iMSC-EVs reversed the acute inhibition of physiological inflammation and chronic increase of pathogenic inflammation"
10. ID: 32558033 - "Attenuation of SRM expression significantly inhibited secretion of EVs in 22Rv1 cells"
11. ID: 41688997 - "plant-derived extracellular vesicle-like nanoparticles (PEVs) offer a promising strategy to overcome this barrier."
12. ID: 41206776 - "Lipid-based systems, especially following the success of COVID-19 vaccines, have gained attention as versatile platforms for delivering RNAs."
13. ID: 41205008 - "EVs, however, possess an inherent capacity to traverse this barrier, either naturally or through engineered modifications."
14. ID: 38838131 - "AAV(L):bPGRN treatment reduced several FTLD-GRN-associated pathologies including severe motor function deficits, aberrant TDP-43 phosphorylation, dysfunctional protein degradation"
15. ID: 36057633 - "Spermidine treatment restores EIF5AH, partially restores protein synthesis and mitochondrial function in NASH"
16. ID: 34654821 - "loss-of-function mutations in the eukaryotic translation initiation factor 2D (eif-2D/eIF2D) reduce poly-GA and poly-GP levels"
17. ID: 33291784 - "SPD/SPM regulates snoRNA and rRNA expression directly or indirectly, in turn, affecting protein synthesis, metabolism, and other cellular activities in a positive manner."
18. ID: 40978531 - "developed a nanoparticle-based approach for intranasal delivery of siRNAs, circumventing the blood-brain barrier"
19. ID: 42024000 - "CS-based or CS-coated NP can prolong the residence time on the nasal mucosa and facilitate drug transport to the CNS."
20. ID: 41582778 - "Chitosan nanoparticles (CH-NPs) offer a promising solution for improving drug delivery to the brain due to their biocompatibility and ability to enhance intranasal delivery, potentially increasing therapeutic efficacy."



## Logical Systems Map (Logical Gates)
- "Spermidine" -> "Lysosomal Degradation"
- "Lysosomal Degradation" -> "Protein Aggregates"
- "Protein Aggregates" -> "Cell Death"
- "Administration, Intranasal" -> "Brain Neurons"
- "Progranulins" -> "TMEM106B protein, human"
- "Amyloid" -> "Active Nuclear Transport"
- "Administration, Intranasal" -> "Drug Delivery Systems"
- "Microtubule-Affinity-Regulating Kinase Proteins" -> "RAN Translation"
- "Progranulins" -> "Amyloidosis"

## Verified Verbatim Quotes
- "Spermidine, a dietary polyamine from wheat germ and fermented foods, induces autophagy through EP300 inhibition and is associated with reduced all-cause mortality in prospective studies."
- "Here, we demonstrate that RAN translation triggers the rapid decay of C9-HRE mRNA. During this process, the RNA exosome engages the translating ribosome-C9-HRE mRNA complex to mediate RAN translation-coupled mRNA decay."
- "Moreover, overexpression of EXOSC3, a key subunit of the RNA exosome cap, promotes RAN translation-coupled decay of C9-HRE mRNA and suppresses DPR production."
- "Intriguingly, cap-independent RAN translation exhibits less reliance on near-cognate codons for initiation than cap-dependent RAN translation. This finding led us to identify a surprising global increase in start codon stringency in neurons as a contributor to the relatively higher cap-independent RAN translation in this cell type."
- "Here we show that karyoptosis, a distinct form of cell death, can be induced by proteotoxic stress and then develops through nuclear degeneration and cellular expulsion of nuclear material."
- "We establish that karyoptosis is regulated by the p38 kinase signalling pathway, which controls stability of the nuclear lamina protein LaminB1 via direct phosphorylation."
- "Moreover, we discuss the potential role of TMEM106B as an important modifier of the protein TDP-43 neuropathology associated with the GRN mutation in this case."
- "Progranulin (PGRN) constitutes a pleiotropic growth factor involved in neuroinflammation, lysosomal function, and tissue repair, which has not been adequately studied in iNPH."
- "Intranasal administration has emerged as an attractive non-invasive approach for direct brain targeting, enabling therapeutic agents to circumvent BBB-associated transport barriers and access the central nervous system through the olfactory and trigeminal neural pathways."
- "Cellular interactions involve internalization of amyloid precursors, leading to lysosomal dysfunction, mitochondrial impairment, reactive oxygen species production, and proteotoxicity, particularly in cardiomyocytes and mesangial cells."
- "Here, using Drosophila models expressing physiologically relevant repeat length DPRs, we identify poly(GR) as a novel activator of the ISR, inducing early and sustained eIF2α phosphorylation and SG accumulation prior to motor decline."
- "ISR inhibition with ISRIB restored translation and MuSK protein levels and ameliorated both muscle atrophy and NMJ deficits."
- "We previously demonstrated that Aβ is produced from APP following its lysosomal internalization via macropinocytosis."
- "Moreover, the bioavailability of orally administered agents in the brain is challenged by the blood-brain barrier, complicating brain-targeted drug development."
- "Alzheimer's disease and Parkinson's disease are increasingly recognized as disorders marked not only by protein aggregation but by a sustained failure of brain energy metabolism."
- "Particular attention is given to the design parameters that influence N2B performance, including particle size distribution/PDI, surface charge, mucus interaction, cargo protection, targeting modification, biodistribution, and deposition reproducibility."
- "Mechanistically, cholesterol overload triggered endoplasmic reticulum (ER) stress, impaired hERG proteostasis, and promoted ER-to-lysosome-associated degradation (ERLAD) of hERG."
- "Spermidine, a dietary polyamine from wheat germ and fermented foods, induces autophagy through EP300 inhibition and is associated with reduced all-cause mortality in prospective studies."
- "Cellular interactions involve internalization of amyloid precursors, leading to lysosomal dysfunction, mitochondrial impairment, reactive oxygen species production, and proteotoxicity, particularly in cardiomyocytes and mesangial cells."
- "Here, using Drosophila models expressing physiologically relevant repeat length DPRs, we identify poly(GR) as a novel activator of the ISR, inducing early and sustained eIF2α phosphorylation and SG accumulation prior to motor decline."
- "Here we show that karyoptosis, a distinct form of cell death, can be induced by proteotoxic stress and then develops through nuclear degeneration and cellular expulsion of nuclear material."
- "We establish that karyoptosis is regulated by the p38 kinase signalling pathway, which controls stability of the nuclear lamina protein LaminB1 via direct phosphorylation."
- "Here, we demonstrate that RAN translation triggers the rapid decay of C9-HRE mRNA. During this process, the RNA exosome engages the translating ribosome-C9-HRE mRNA complex to mediate RAN translation-coupled mRNA decay."
- "Intranasal administration has emerged as an attractive non-invasive approach for direct brain targeting, enabling therapeutic agents to circumvent BBB-associated transport barriers and access the central nervous system through the olfactory and trigeminal neural pathways."
- "Moreover, overexpression of EXOSC3, a key subunit of the RNA exosome cap, promotes RAN translation-coupled decay of C9-HRE mRNA and suppresses DPR production."
- "Intriguingly, cap-independent RAN translation exhibits less reliance on near-cognate codons for initiation than cap-dependent RAN translation. This finding led us to identify a surprising global increase in start codon stringency in neurons as a contributor to the relatively higher cap-independent RAN translation in this cell type."
- "Moreover, we discuss the potential role of TMEM106B as an important modifier of the protein TDP-43 neuropathology associated with the GRN mutation in this case."
- "Progranulin (PGRN) constitutes a pleiotropic growth factor involved in neuroinflammation, lysosomal function, and tissue repair, which has not been adequately studied in iNPH."
- "ISR inhibition with ISRIB restored translation and MuSK protein levels and ameliorated both muscle atrophy and NMJ deficits."
- "We previously demonstrated that Aβ is produced from APP following its lysosomal internalization via macropinocytosis."
- "Moreover, the bioavailability of orally administered agents in the brain is challenged by the blood-brain barrier, complicating brain-targeted drug development."
- "Alzheimer's disease and Parkinson's disease are increasingly recognized as disorders marked not only by protein aggregation but by a sustained failure of brain energy metabolism."
- "Particular attention is given to the design parameters that influence N2B performance, including particle size distribution/PDI, surface charge, mucus interaction, cargo protection, targeting modification, biodistribution, and deposition reproducibility."
- "Mechanistically, cholesterol overload triggered endoplasmic reticulum (ER) stress, impaired hERG proteostasis, and promoted ER-to-lysosome-associated degradation (ERLAD) of hERG."
- "Transcriptomic profiling revealed extensive molecular reprogramming."
- "Intranasal liposomal minocycline mitigates aluminum-induced neurodegeneration by modulating the redox-NF-κB/NLRP3 inflammatory axis, leading to structural and functional recovery."
- "Intranasally delivered ADMSC-EVs rapidly reached multiple brain regions, including the hippocampus, improved learning and memory performance, and reduced hippocampal amyloid-β 1-42 (Aβ42) deposition and plaque burden."
- "To improve the delivery of siRNA targeting Alox12B, we engineered spermidine-modified ginseng-derived extracellular vesicles (S-GEVs) nanoparticles, termed S-GEVs@siRNA."
- "After intranasal administration, the nanoparticles were efficiently internalized by olfactory receptor neurons (ORNs) via the olfactory nerve pathway."
- "Using lysosome immunoprecipitation, we show that granulin deficiency drives the accumulation of the TMEM106B C-terminal fragment within lysosomes in Grn-knockout mice and GRN-null human iPSC-derived neurons."
- "Isogenic neurons carrying the TMEM106B risk allele displayed allele-dose-dependent fragment accumulation that was reversible by progranulin."
- "Fragment expression disrupted Lamin B1 organization, mislocalized the nuclear import machinery KPNB1 and RanGAP1, and impaired importin-dependent nuclear transport in primary cortical neurons."
- "In GRN-mutation carriers, in whom fibril burden is greatest, fibrils extrude through ruptured lysosomal membranes."
- "Here, we show that Biondi bodies are strongly immunoreactive with TMEM239, an antibody specific for inclusions of transmembrane protein 106B (TMEM106B)."
- "Mesenchymal stem cell-derived small extracellular vesicle administration significantly reduced motor dysfunction in 1-methyl-4-phenyl-1,2,4,5-tetrahydropyridine-induced Parkinson's disease mice by protecting dopaminergic neurons."
- "We found that TMEM106B deficiency significantly decreases levels of two major classes of myelin lipids, galactosylceramide and its sulfated derivative sulfatide."
- "We confirm that in the brain, inclusions were most abundant in astrocytes."
- "This study demonstrated high affinity of [18F]PM-PBB3 for TMEM106B aggregates in the choroid plexus."
- "Cytosolic aggregation of TMEM CT proteins accompanied by behavioral dysfunction and neurodegeneration."
- "TMEM CT aggregates accumulate adjacent to but not within lysosomes."
- "AAV(L):bPGRN treatment reduced several FTLD-GRN-associated pathologies including severe motor function deficits, aberrant TDP-43 phosphorylation, dysfunctional protein degradation, lipid metabolism, gliosis, and neurodegeneration in the brain."
- "In Thy1-aSyn mice, intranasally administered labeled nanoparticles distributed extensively across the brain, including the olfactory bulb, substantia nigra, and prefrontal cortex."
- "Myristoylation decreases TMEM106B levels by promoting its lysosomal degradation."
- "To improve the delivery of siRNA targeting Alox12B, we engineered spermidine-modified ginseng-derived extracellular vesicles (S-GEVs) nanoparticles, termed S-GEVs@siRNA."
- "After intranasal administration, the nanoparticles were efficiently internalized by olfactory receptor neurons (ORNs) via the olfactory nerve pathway."
- "Using lysosome immunoprecipitation, we show that granulin deficiency drives the accumulation of the TMEM106B C-terminal fragment within lysosomes in Grn-knockout mice and GRN-null human iPSC-derived neurons."
- "Isogenic neurons carrying the TMEM106B risk allele displayed allele-dose-dependent fragment accumulation that was reversible by progranulin."
- "Fragment expression disrupted Lamin B1 organization, mislocalized the nuclear import machinery KPNB1 and RanGAP1, and impaired importin-dependent nuclear transport in primary cortical neurons."
- "In GRN-mutation carriers, in whom fibril burden is greatest, fibrils extrude through ruptured lysosomal membranes."
- "Here, we show that Biondi bodies are strongly immunoreactive with TMEM239, an antibody specific for inclusions of transmembrane protein 106B (TMEM106B)."
- "Mesenchymal stem cell-derived small extracellular vesicle administration significantly reduced motor dysfunction in 1-methyl-4-phenyl-1,2,4,5-tetrahydropyridine-induced Parkinson's disease mice by protecting dopaminergic neurons."
- "We found that TMEM106B deficiency significantly decreases levels of two major classes of myelin lipids, galactosylceramide and its sulfated derivative sulfatide."
- "We confirm that in the brain, inclusions were most abundant in astrocytes."
- "This study demonstrated high affinity of [18F]PM-PBB3 for TMEM106B aggregates in the choroid plexus."
- "Cytosolic aggregation of TMEM CT proteins accompanied by behavioral dysfunction and neurodegeneration."
- "TMEM CT aggregates accumulate adjacent to but not within lysosomes."
- "AAV(L):bPGRN treatment reduced several FTLD-GRN-associated pathologies including severe motor function deficits, aberrant TDP-43 phosphorylation, dysfunctional protein degradation, lipid metabolism, gliosis, and neurodegeneration in the brain."
- "In Thy1-aSyn mice, intranasally administered labeled nanoparticles distributed extensively across the brain, including the olfactory bulb, substantia nigra, and prefrontal cortex."
- "Myristoylation decreases TMEM106B levels by promoting its lysosomal degradation."
- "The Rayleigh breakup process forms a continuous micro-jet of droplets with minimal shear, thereby preserving the physicochemical properties of the nanoparticles."
- "Our results demonstrated that the designed system achieved enhanced inflammatory targeting through CD44 receptor-mediated accumulation and exhibited potent anti-inflammatory and antioxidant activities."
- "PEVs protect against DIC by delivering bioactive metabolites to injured myocardium and inhibiting p53-driven oxidative, inflammatory, and apoptotic pathways, highlighting their potential as a phytomedicine-based cardioprotective strategy."
- "Increased TMEM106B levels led to altered synaptic signaling in 12-month-old animals which further exhibited an anxiety-like phenotype."
- "To improve the delivery of siRNA targeting Alox12B, we engineered spermidine-modified ginseng-derived extracellular vesicles (S-GEVs) nanoparticles"
- "nanoparticles leveraged the targeting capabilities of spermidine for olfactory receptor-trace amine associated receptor (TAAR), enhancing siRNA delivery and therapeutic efficacy"
- "identify microtubule affinity-regulating kinase 2 (MARK2) as a key eIF2α kinase that enhances RAN translation under proteotoxic stress."
- "granulin deficiency drives the accumulation of the TMEM106B C-terminal fragment within lysosomes"
- "Recombinant progranulin supplementation reduced TMEM106B C-terminal fragment accumulation."
- "polyPR disrupts nucleocytoplasmic transport (NCT) through several mechanisms including accumulation in the nuclear pore complex"
- "using Drosophila models expressing physiologically relevant repeat length DPRs, we identify poly(GR) as a novel activator of the ISR"
- "Intranasal delivery provides a promising alternative by exploiting olfactory and trigeminal nerve pathways to circumvent the BBB."
- "young iMSC-EVs reversed the acute inhibition of physiological inflammation and chronic increase of pathogenic inflammation"
- "Attenuation of SRM expression significantly inhibited secretion of EVs in 22Rv1 cells"
- "plant-derived extracellular vesicle-like nanoparticles (PEVs) offer a promising strategy to overcome this barrier."
- "Lipid-based systems, especially following the success of COVID-19 vaccines, have gained attention as versatile platforms for delivering RNAs."
- "EVs, however, possess an inherent capacity to traverse this barrier, either naturally or through engineered modifications."
- "AAV(L):bPGRN treatment reduced several FTLD-GRN-associated pathologies including severe motor function deficits, aberrant TDP-43 phosphorylation, dysfunctional protein degradation"
- "Spermidine treatment restores EIF5AH, partially restores protein synthesis and mitochondrial function in NASH"
- "loss-of-function mutations in the eukaryotic translation initiation factor 2D (eif-2D/eIF2D) reduce poly-GA and poly-GP levels"
- "SPD/SPM regulates snoRNA and rRNA expression directly or indirectly, in turn, affecting protein synthesis, metabolism, and other cellular activities in a positive manner."
- "developed a nanoparticle-based approach for intranasal delivery of siRNAs, circumventing the blood-brain barrier"
- "To improve the delivery of siRNA targeting Alox12B, we engineered spermidine-modified ginseng-derived extracellular vesicles (S-GEVs) nanoparticles"
- "nanoparticles leveraged the targeting capabilities of spermidine for olfactory receptor-trace amine associated receptor (TAAR), enhancing siRNA delivery and therapeutic efficacy"
- "identify microtubule affinity-regulating kinase 2 (MARK2) as a key eIF2α kinase that enhances RAN translation under proteotoxic stress."
- "granulin deficiency drives the accumulation of the TMEM106B C-terminal fragment within lysosomes"
- "Recombinant progranulin supplementation reduced TMEM106B C-terminal fragment accumulation."
- "polyPR disrupts nucleocytoplasmic transport (NCT) through several mechanisms including accumulation in the nuclear pore complex"
- "using Drosophila models expressing physiologically relevant repeat length DPRs, we identify poly(GR) as a novel activator of the ISR"
- "Intranasal delivery provides a promising alternative by exploiting olfactory and trigeminal nerve pathways to circumvent the BBB."
- "young iMSC-EVs reversed the acute inhibition of physiological inflammation and chronic increase of pathogenic inflammation"
- "Attenuation of SRM expression significantly inhibited secretion of EVs in 22Rv1 cells"
- "plant-derived extracellular vesicle-like nanoparticles (PEVs) offer a promising strategy to overcome this barrier."
- "Lipid-based systems, especially following the success of COVID-19 vaccines, have gained attention as versatile platforms for delivering RNAs."
- "EVs, however, possess an inherent capacity to traverse this barrier, either naturally or through engineered modifications."
- "AAV(L):bPGRN treatment reduced several FTLD-GRN-associated pathologies including severe motor function deficits, aberrant TDP-43 phosphorylation, dysfunctional protein degradation"
- "Spermidine treatment restores EIF5AH, partially restores protein synthesis and mitochondrial function in NASH"
- "loss-of-function mutations in the eukaryotic translation initiation factor 2D (eif-2D/eIF2D) reduce poly-GA and poly-GP levels"
- "SPD/SPM regulates snoRNA and rRNA expression directly or indirectly, in turn, affecting protein synthesis, metabolism, and other cellular activities in a positive manner."
- "developed a nanoparticle-based approach for intranasal delivery of siRNAs, circumventing the blood-brain barrier"
- "Intranasal drug delivery offers a promising, noninvasive route to bypass the BBB and directly target the brain through olfactory and trigeminal pathways."
- "Intranasal lithium chloride in RFV inhibited both memory loss and depressive behavior in adult and aged 5XFAD mice."
- "To improve the delivery of siRNA targeting Alox12B, we engineered spermidine-modified ginseng-derived extracellular vesicles (S-GEVs) nanoparticles"
- "nanoparticles leveraged the targeting capabilities of spermidine for olfactory receptor-trace amine associated receptor (TAAR), enhancing siRNA delivery and therapeutic efficacy"
- "identify microtubule affinity-regulating kinase 2 (MARK2) as a key eIF2α kinase that enhances RAN translation under proteotoxic stress."
- "granulin deficiency drives the accumulation of the TMEM106B C-terminal fragment within lysosomes"
- "Recombinant progranulin supplementation reduced TMEM106B C-terminal fragment accumulation."
- "polyPR disrupts nucleocytoplasmic transport (NCT) through several mechanisms including accumulation in the nuclear pore complex"
- "using Drosophila models expressing physiologically relevant repeat length DPRs, we identify poly(GR) as a novel activator of the ISR"
- "Intranasal delivery provides a promising alternative by exploiting olfactory and trigeminal nerve pathways to circumvent the BBB."
- "young iMSC-EVs reversed the acute inhibition of physiological inflammation and chronic increase of pathogenic inflammation"
- "Attenuation of SRM expression significantly inhibited secretion of EVs in 22Rv1 cells"
- "plant-derived extracellular vesicle-like nanoparticles (PEVs) offer a promising strategy to overcome this barrier."
- "Lipid-based systems, especially following the success of COVID-19 vaccines, have gained attention as versatile platforms for delivering RNAs."
- "EVs, however, possess an inherent capacity to traverse this barrier, either naturally or through engineered modifications."
- "AAV(L):bPGRN treatment reduced several FTLD-GRN-associated pathologies including severe motor function deficits, aberrant TDP-43 phosphorylation, dysfunctional protein degradation"
- "Spermidine treatment restores EIF5AH, partially restores protein synthesis and mitochondrial function in NASH"
- "loss-of-function mutations in the eukaryotic translation initiation factor 2D (eif-2D/eIF2D) reduce poly-GA and poly-GP levels"
- "SPD/SPM regulates snoRNA and rRNA expression directly or indirectly, in turn, affecting protein synthesis, metabolism, and other cellular activities in a positive manner."
- "developed a nanoparticle-based approach for intranasal delivery of siRNAs, circumventing the blood-brain barrier"
- "CS-based or CS-coated NP can prolong the residence time on the nasal mucosa and facilitate drug transport to the CNS."
- "Chitosan nanoparticles (CH-NPs) offer a promising solution for improving drug delivery to the brain due to their biocompatibility and ability to enhance intranasal delivery, potentially increasing therapeutic efficacy."