Tau dysfunction destabilizes labile pool

Mechanistic description

Loss of tau function (as in disease states) selectively destabilizes the labile microtubule population, disrupting axonal transport while sparing stable domains

Prediction: Tau-targeted interventions will selectively impair transport of organelles requiring labile microtubules (mitochondria, endosomes) while sparing lysosome transport

Mechanism / pathway

MAPT
→
neurodegeneration

Evidence for (5)

MAPT mutations, tauopathy, and mechanisms of neurodegeneration.

PMID:30742061 2019 Lab Invest
Endolysosomal impairment by binding of amyloid beta or MAPT/Tau to V-ATPase and rescue via the HYAL-CD44 axis in Alzheimer disease.

PMID:36843263 2023 Autophagy
Tau-targeting antisense oligonucleotide MAPT(Rx) in mild Alzheimer's disease: a phase 1b, randomized, placebo-controlled trial.

PMID:37095250 2023 Nat Med
ELAVL4, splicing, and glutamatergic dysfunction precede neuron loss in MAPT mutation cerebral organoids.

PMID:34314701 2021 Cell
The six brain-specific TAU isoforms and their role in Alzheimer's disease and related neurodegenerative dementia syndromes.

PMID:38556838 2024 Alzheimers Dement

Evidence against (2)

PMID:10973990 Takei Y et al., J Cell Biol 2000 Sep 4
Alzheimer Disease: An Update on Pathobiology and Treatment Strategies.

PMID:31564456 2019 Cell

Evidence matrix

6 supporting 1 contradicting

53% posterior support

Supporting

Loss of tau function (as in disease states) selectively destabilizes the labile microtubule population, disrupting axonal transport while sparing stable domains
MAPT mutations, tauopathy, and mechanisms of neurodegeneration. PMID:30742061 · 2019 · Lab Invest
Endolysosomal impairment by binding of amyloid beta or MAPT/Tau to V-ATPase and rescue via the HYAL-CD44 axis in Alzheimer disease. PMID:36843263 · 2023 · Autophagy
Tau-targeting antisense oligonucleotide MAPT(Rx) in mild Alzheimer's disease: a phase 1b, randomized, placebo-controlled trial. PMID:37095250 · 2023 · Nat Med
ELAVL4, splicing, and glutamatergic dysfunction precede neuron loss in MAPT mutation cerebral organoids. PMID:34314701 · 2021 · Cell
The six brain-specific TAU isoforms and their role in Alzheimer's disease and related neurodegenerative dementia syndromes. PMID:38556838 · 2024 · Alzheimers Dement

Contradicting

Alzheimer Disease: An Update on Pathobiology and Treatment Strategies. PMID:31564456 · 2019 · Cell

Bayesian persona consensus

53% posterior support

1 signal · 1 for / 0 against · agreement 100%

scidex.consensus.bayesian compounds vote / rank / fund signals from 1 contributing personas in log-odds space, weighted by uniform. Prior 50%.

Cite this hypothesis

Citation

etl-backfill (2026). Tau dysfunction destabilizes labile pool. SciDEX hypothesis. https://prism.scidex.ai/hypotheses/h-e3557d75fa56

BibTeX

@misc{scidex_hypothesis_he3557d7,
  title        = {Tau dysfunction destabilizes labile pool},
  author       = {etl-backfill},
  year         = {2026},
  howpublished = {SciDEX hypothesis},
  url          = {https://prism.scidex.ai/hypotheses/h-e3557d75fa56},
  note         = {SciDEX artifact hypothesis:h-e3557d75fa56}
}