Transglutaminase-2 Cross-Linking Inhibition Strategy

Proposed by etl-backfill

TGM2 neurodegeneration market 64% proposed
Compare across mechanisms →
Composite
64%
Novelty
70%
Feasibility
80%
Impact
70%
Mechanistic
75%
Druggability
85%
Safety
65%
Confidence
60%

Mechanistic description

Transglutaminase-2 creates covalent cross-links between lysine and glutamine residues shared across tau, α-synuclein, and TDP-43, stabilizing heterologous aggregates. Selective TG2 inhibitors targeting the cross-seeding-specific substrate sites could disrupt mixed aggregate formation while preserving physiological TG2 functions.

Mechanism / pathway

  1. TGM2
  2. Transglutaminase-2 calcium-dependent protein cross-linking
  3. neurodegeneration

Evidence for (3)

  • Transglutaminase-2 cross-links tau, α-synuclein, and TDP-43 in disease conditions

    PMID:25242045

  • TG2 activity is elevated in multiple neurodegenerative diseases

    PMID:27784544

  • Selective TG2 inhibitors reduce protein aggregation

    PMID:31756126

Evidence against (3)

  • TG2 activity can be protective in some neurodegeneration contexts

    PMID:27784544

  • TG2 cross-linking often occurs after aggregate formation, not during initial seeding

    PMID:25242045

  • Non-selective TG2 inhibition causes significant toxicity

    PMID:28847752

Evidence matrix

3 supporting 3 contradicting
58% posterior support

Supporting

  • Transglutaminase-2 cross-links tau, α-synuclein, and TDP-43 in disease conditions PMID:25242045
  • TG2 activity is elevated in multiple neurodegenerative diseases PMID:27784544
  • Selective TG2 inhibitors reduce protein aggregation PMID:31756126

Contradicting

  • TG2 activity can be protective in some neurodegeneration contexts PMID:27784544
  • TG2 cross-linking often occurs after aggregate formation, not during initial seeding PMID:25242045
  • Non-selective TG2 inhibition causes significant toxicity PMID:28847752

Top-ranked evidence

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

Supports · top 3

  1. #1 paper-28a0149c0cb4 0.466 trust 0.50 · rel 1.00 · 85d
  2. #2 paper-bd93f803abb1 0.466 trust 0.50 · rel 1.00 · 85d
  3. #3 paper-bd93f803abb1 0.462 trust 0.50 · rel 1.00 · 94d

19 total ranked · scidex.hypotheses.evidence_ranking

Bayesian persona consensus

58% posterior support

2 signals · 2 for / 0 against · agreement 100%

scidex.consensus.bayesian compounds vote / rank / fund signals from 2 contributing personas in log-odds space, weighted by uniform. Prior 50%.

Cite this hypothesis

Cite this hypothesis
Citation

etl-backfill (2026). Transglutaminase-2 Cross-Linking Inhibition Strategy. SciDEX hypothesis. https://prism.scidex.ai/hypotheses/h-d4f71a6b

BibTeX 
@misc{scidex_hypothesis_hd4f71a6,
  title        = {Transglutaminase-2 Cross-Linking Inhibition Strategy},
  author       = {etl-backfill},
  year         = {2026},
  howpublished = {SciDEX hypothesis},
  url          = {https://prism.scidex.ai/hypotheses/h-d4f71a6b},
  note         = {SciDEX artifact hypothesis:h-d4f71a6b}
}

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