2. Academic Validation
  3. CCDC84 Acetylation Oscillation Regulates Centrosome Duplication by Modulating HsSAS-6 Degradation

CCDC84 Acetylation Oscillation Regulates Centrosome Duplication by Modulating HsSAS-6 Degradation

  • Cell Rep. 2019 Nov 12;29(7):2078-2091.e5. doi: 10.1016/j.celrep.2019.10.028.
Tianning Wang 1,  Yuhong Zou 1,  Ning Huang 1,  Junlin Teng 2,  Jianguo Chen 3
Affiliations

Affiliations

  • 1 Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education and State Key Laboratory of Membrane Biology, College of Life Sciences, Peking University, Beijing 100871, China.
  • 2 Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education and State Key Laboratory of Membrane Biology, College of Life Sciences, Peking University, Beijing 100871, China. Electronic address: junlinteng@pku.edu.cn.
  • 3 Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education and State Key Laboratory of Membrane Biology, College of Life Sciences, Peking University, Beijing 100871, China; Center for Quantitative Biology, Peking University, Beijing 100871, China. Electronic address: chenjg@pku.edu.cn.
PMID: 31722219 DOI: 10.1016/j.celrep.2019.10.028
Abstract

In animal cells, centriole number is strictly controlled in order to guarantee faithful cell division and genetic stability, but the mechanism by which the accuracy of centrosome duplication is maintained is not fully understood. Here, we show that CCDC84 constrains centriole number by modulating APC/CCdh1-mediated HsSAS-6 degradation. More importantly, CCDC84 acetylation oscillates throughout the cell cycle, and the acetylation state of CCDC84 at lysine 31 is regulated by the deacetylase SIRT1 and the acetyltransferase NAT10. Deacetylated CCDC84 is responsible for its centrosome targeting, and acetylated CCDC84 promotes HsSAS-6 ubiquitination by enhancing the binding affinity of HsSAS-6 for Cdh1. Our findings shed new LIGHT on the function of (de)acetylation in centriole number regulation as well as refine the established centrosome duplication model.

Keywords

CCDC84; HsSAS-6; NAT10; SIRT1; acetylation; centrosome duplication.

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