Cited by 253Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsAutophagy in Disease and Therapy

TFEB enhances astroglial uptake of extracellular tau species and reduces tau spreading

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Martini-Stoica, Heidi, Cole, Allysa L., Swartzlander, Daniel B., Chen, Fading, Wan, Ying-Wooi, Bajaj, Lakshya, Bader, David A., Lee, Virginia M.Y. +4 more·2018·Journal of Experimental Medicine

Abstract

The progression of tau pathology in Alzheimer’s disease follows a stereotyped pattern, and recent evidence suggests a role of synaptic connections in this process. Astrocytes are well positioned at the neuronal synapse to capture and degrade extracellular tau as it transits the synapse and hence could potentially have the ability to inhibit tau spreading and delay disease progression. Our study shows increased expression and activity of Transcription Factor EB (TFEB), a master regulator of lysosomal biogenesis, in response to tau pathology in both human brains with dementia and transgenic mouse models. Exogenous TFEB expression in primary astrocytes enhances tau fibril uptake and lysosomal activity, while TFEB knockout has the reverse effect. In vivo, induced TFEB expression in astrocytes reduces pathology in the hippocampus of PS19 tauopathy mice, as well as prominently attenuates tau spreading from the ipsilateral to the contralateral hippocampus in a mouse model of tau spreading. Our study suggests that astrocytic TFEB plays a functional role in modulating extracellular tau and the propagation of neuronal tau pathology in tauopathies such as Alzheimer’s disease.

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Crossref · 10.1084/jem.20172158

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  • Previous studies have shown that astrocytes can internalize tau monomers, truncated pre-formed fibrils (PFFs), and tau oligomers through HSPG-independent mechanisms.

    “Previous studies have shown that astrocytes can internalize tau monomers, 13 truncated pre‐formed fibrils (PFFs), 12 and tau oligomers 11 , 41 through HSPG‐independent mechanisms. 28”

    From Protective mechanisms against Alzheimer's disease in APOE3‐Christchurch homozygous astrocytes (2025) · cites this paper as [12]

    Citation 28 is attached to the claim that uptake occurs through HSPG-independent mechanisms. The Results section (page not available in our copy) says instead that tau fibril uptake involves interaction with cell-surface HSPGs and reports that heparin, used to inhibit that interaction, reduces fibril uptake in primary astrocytes. (LLM, conf=0.88)

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  • Astrocytes are active participants in tau clearance, a process critical for limiting the spread of pathological tau aggregates in AD and related tauopathies.

    “astrocytes are increasingly recognized as active participants in tau clearance, a process critical for limiting the spread of pathological tau aggregates in AD and related tauopathies.”
  • Astrocytes phagocytose extracellular tau and contribute to tau spreading through transcription factor EB.

    “Similar to microglia, astrocytes can also phagocytose extracellular tau and contribute to tau spreading through transcription factor EB [435].”
  • TFEB induces astrocytic trafficking of tau fibrils via macropinocytosis, possibly through interaction with heparan sulfate proteoglycans (HSPGs).

    “TFEB induces astrocytic trafficking of tau fibrils via macropinocytosis, possibly through interaction with heparan sulfate proteoglycans (HSPGs) [200, 201].”
  • Overexpression of TFEB in astrocytes promotes tau fibril species uptake and lysosomal activity as well as attenuates tau spreading and pathology in the hippocampus of P301S tauopathy mice.

    “Overexpression of transcription factor EB (TFEB, a regulator of lysosomal biogenesis) in astrocytes promotes tau fibril species uptake and lysosomal activity as well as attenuates tau spreading and pathology in the hippocampus of P301S tauopathy mice [201] (Fig. 1).”

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Authors
Martini-Stoica, H., Cole, A. L., Swartzlander, D. B., Chen, F., Wan, Y.-W., Bajaj, L., Bader, D. A., Lee, V. M. Y., Trojanowski, J. Q., Liu, Z., Sardiello, M., & Zheng, H.
Affiliations
  • Huffington Center on Aging, Baylor College of Medicine, Houston, TX 1
  • Baylor College of Medicine (US)
  • University of Pennsylvania (US)
Corresponding author
Zheng, Hui
Venue
Journal of Experimental Medicine
Published
2018-08-14
Volume
215
Issue
9
Pages
2355-2377
ISSN
  • 0022-1007 (ISSN-L)
  • 1540-9538
OpenAlex
W2887230896
Cited by
253
References
81
Citations by year
2026: 26 · 2025: 23 · 2024: 40 · 2023: 32 · 2022: 30 · 2021: 45 · 2020: 34 · 2019: 22
FWCI
17.31
Type
journal article
Language
en
Open access
Locations
  • The Journal of Experimental Medicine (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (P30 AI036211, P30 CA125123, S10 RR024574)
  • NIH (P30 CA125123, R01 NS093652, R01 AG020670, RF1 AG054111, ADCC AG010124, FTD PPG AG17586, F30 AG050412)
  • Wyncote Foundation
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
TFEB, astrocytes, tau propagation, extracellular tau, lysosomal biogenesis, Alzheimer's disease, tauopathy, hippocampus, PS19 mice, transgenic mouse model
MeSH terms
Alzheimer Disease, Animals, Astrocytes, Disease Models, Animal, Hippocampus, Lysosomes, Synapses, tau Proteins, Mice, Basic Helix-Loop-Helix Leucine Zipper Transcription Factors, Gene Knockdown Techniques

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