Co-expression network analysis of human tau-transgenic mice reveals protein modules associated with tau-induced pathologies

Kazuya Tsumagari, Yoshiaki Sato, Aki Shimozawa, Hirofumi Aoyagi, Hideyuki Okano, Junro Kuromitsu

Research output: Contribution to journalArticlepeer-review

Abstract

Abnormally accumulated tau protein aggregates are one of the hallmarks of neurodegenerative diseases, including Alzheimer's disease (AD). In order to investigate proteomic alteration driven by tau aggregates, we implemented quantitative proteomics to analyze disease model mice expressing human MAPTP301S transgene (hTau-Tg) and quantified more than 9,000 proteins in total. We applied the weighted gene co-expression analysis (WGCNA) algorithm to the datasets and explored protein co-expression modules that were associated with the accumulation of tau aggregates and were preserved in proteomes of AD brains. This led us to identify four modules with functions related to neuroinflammatory responses, mitochondrial energy production processes (including the tricarboxylic acid cycle and oxidative phosphorylation), cholesterol biosynthesis, and postsynaptic density. Furthermore, a phosphoproteomics study uncovered phosphorylation sites that were highly correlated with these modules. Our datasets represent resources for understanding the molecular basis of tau-induced neurodegeneration, including AD.

Original languageEnglish
Article number104832
JournaliScience
Volume25
Issue number8
DOIs
Publication statusPublished - 2022 Aug 19

Keywords

  • Molecular biology
  • omics
  • proteomics

ASJC Scopus subject areas

  • General

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