Nature Communications (Nov 2021)

RNF19A-mediated ubiquitination of BARD1 prevents BRCA1/BARD1-dependent homologous recombination

  • Qian Zhu,
  • Jinzhou Huang,
  • Hongyang Huang,
  • Huan Li,
  • Peiqiang Yi,
  • Jake A. Kloeber,
  • Jian Yuan,
  • Yuping Chen,
  • Min Deng,
  • Kuntian Luo,
  • Ming Gao,
  • Guijie Guo,
  • Xinyi Tu,
  • Ping Yin,
  • Yong Zhang,
  • Jun Su,
  • Jiayi Chen,
  • Zhenkun Lou

DOI
https://doi.org/10.1038/s41467-021-27048-3
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 15

Abstract

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BRCA1 dysfunction sensitizes cancer cells to PARP inhibitors (PARPi) but the underlying mechanism is unclear. Here, the authors identify RNF19A as a determinant of PARPi sensitivity, showing that RNF19A ubiquitinates BARD1, negatively regulates the BRCA1-BARD1 complex, and inhibits homologous recombination.