Communications Biology (Oct 2021)

HMGB1 signaling phosphorylates Ku70 and impairs DNA damage repair in Alzheimer’s disease pathology

  • Hikari Tanaka,
  • Kanoh Kondo,
  • Kyota Fujita,
  • Hidenori Homma,
  • Kazuhiko Tagawa,
  • Xiaocen Jin,
  • Meihua Jin,
  • Yuki Yoshioka,
  • Sumire Takayama,
  • Hitomi Masuda,
  • Rie Tokuyama,
  • Yukoh Nakazaki,
  • Takashi Saito,
  • Takaomi Saido,
  • Shigeo Murayama,
  • Teikichi Ikura,
  • Nobutoshi Ito,
  • Yu Yamamori,
  • Kentaro Tomii,
  • Marco E. Bianchi,
  • Hitoshi Okazawa

DOI
https://doi.org/10.1038/s42003-021-02671-4
Journal volume & issue
Vol. 4, no. 1
pp. 1 – 23

Abstract

Read online

Tanaka et al use phosphoproteome analysis of post-mortem Alzheimer’s Disease (AD) brains and identified abnormal phosphorylation of Ku70, which leads to DNA damage and transcriptional repression-induced atypical cell death. In a mouse model of AD, the authors show that Ku70 phosporylation is regulated by extracellular high mobility group box 1 protein, thus shedding light on the mechanism of DNA damage in AD.