Increased G3BP2-Tau interaction in tauopathies is a natural defense against Tau aggregation

Congwei Wang, Marco Terrigno, Juan Li, Tania Distler, Nikhil J. Pandya, Martin Ebeling, Stefka Tyanova, Jeroen J. M. Hoozemans, Anke A. Dijkstra, Luisa Fuchs, Shengqi Xiang, Azad Bonni, Fiona Grüninger, Ravi Jagasia

Research output: Contribution to journalArticleAcademicpeer-review

4 Citations (Scopus)

Abstract

Many RNA-binding proteins (RBPs), particularly those associated with RNA granules, promote pathological protein aggregation in neurodegenerative diseases. Here, we demonstrate that G3BP2, a core component of stress granules, directly interacts with Tau and inhibits Tau aggregation. In the human brain, the interaction of G3BP2 and Tau is dramatically increased in multiple tauopathies, and it is independent of neurofibrillary tangle (NFT) formation in Alzheimer's disease (AD). Surprisingly, Tau pathology is significantly elevated upon loss of G3BP2 in human neurons and brain organoids. Moreover, we found that G3BP2 masks the microtubule-binding region (MTBR) of Tau, thereby inhibiting Tau aggregation. Our study defines a novel role for RBPs as a line of defense against Tau aggregation in tauopathies.
Original languageEnglish
Pages (from-to)2660-2674.e9
JournalNeuron
Volume111
Issue number17
DOIs
Publication statusPublished - 6 Sept 2023

Keywords

  • Alzheimer's disease
  • G3BP2
  • RBP
  • Tau aggregation
  • tauopathies

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