RNA-Binding Competition Therapy for TDP-43 Cross-Seeding

Proposed by etl-backfill

TARDBP neurodegeneration market 46% archived
Compare across mechanisms →
Composite
47%
Novelty
85%
Feasibility
25%
Impact
45%
Mechanistic
50%
Druggability
30%
Safety
25%
Confidence
40%

Mechanistic description

Synthetic RNA aptamers designed to competitively bind TDP-43’s RNA recognition motifs could prevent its interaction with tau and α-synuclein mRNAs, thereby blocking the RNA-mediated cross-seeding mechanism. This approach targets the unique ability of TDP-43 to recruit other proteins through RNA scaffolding.

Mechanism / pathway

  1. TARDBP
  2. TDP-43 RNA-binding / liquid-liquid phase separation cross-seeding
  3. neurodegeneration

Evidence for (3)

  • TDP-43 binds tau mRNA and regulates its translation

    PMID:31570834

  • RNA molecules can template protein aggregation and cross-seeding

    PMID:29262350

  • Synthetic aptamers successfully modulate TDP-43 RNA interactions

    PMID:30482948

Evidence against (3)

  • TDP-43 RNA binding is essential for normal cellular function, making competitive inhibition potentially toxic

    PMID:31570834

  • RNA aptamers show poor CNS penetration and rapid degradation

    PMID:32284562

  • TDP-43 pathology often involves loss rather than gain of RNA binding function

    PMID:32296184

Evidence matrix

3 supporting 3 contradicting
50% supporting

Supporting

  • TDP-43 binds tau mRNA and regulates its translation PMID:31570834
  • RNA molecules can template protein aggregation and cross-seeding PMID:29262350
  • Synthetic aptamers successfully modulate TDP-43 RNA interactions PMID:30482948

Contradicting

  • TDP-43 RNA binding is essential for normal cellular function, making competitive inhibition potentially toxic PMID:31570834
  • RNA aptamers show poor CNS penetration and rapid degradation PMID:32284562
  • TDP-43 pathology often involves loss rather than gain of RNA binding function PMID:32296184

Top-ranked evidence

trust_score × relevance_score × exp(-recency_weight × recency_days / 365)

Supports · top 3

  1. #1 paper-594b36fd4cd2 0.466 trust 0.50 · rel 1.00 · 85d
  2. #2 paper-ca17ff7c4a73 0.466 trust 0.50 · rel 1.00 · 85d
  3. #3 paper-6ea33844e3f3 0.466 trust 0.50 · rel 1.00 · 85d

40 total ranked · scidex.hypotheses.evidence_ranking

Cite this hypothesis

Cite this hypothesis
Citation

etl-backfill (2026). RNA-Binding Competition Therapy for TDP-43 Cross-Seeding. SciDEX hypothesis. https://prism.scidex.ai/hypotheses/h-7693c291

BibTeX 
@misc{scidex_hypothesis_h7693c29,
  title        = {RNA-Binding Competition Therapy for TDP-43 Cross-Seeding},
  author       = {etl-backfill},
  year         = {2026},
  howpublished = {SciDEX hypothesis},
  url          = {https://prism.scidex.ai/hypotheses/h-7693c291},
  note         = {SciDEX artifact hypothesis:h-7693c291}
}

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