Nature Communications (May 2018)

Genome-wide and high-density CRISPR-Cas9 screens identify point mutations in PARP1 causing PARP inhibitor resistance

  • Stephen J. Pettitt,
  • Dragomir B. Krastev,
  • Inger Brandsma,
  • Amy Dréan,
  • Feifei Song,
  • Radoslav Aleksandrov,
  • Maria I. Harrell,
  • Malini Menon,
  • Rachel Brough,
  • James Campbell,
  • Jessica Frankum,
  • Michael Ranes,
  • Helen N. Pemberton,
  • Rumana Rafiq,
  • Kerry Fenwick,
  • Amanda Swain,
  • Sebastian Guettler,
  • Jung-Min Lee,
  • Elizabeth M. Swisher,
  • Stoyno Stoynov,
  • Kosuke Yusa,
  • Alan Ashworth,
  • Christopher J. Lord

DOI
https://doi.org/10.1038/s41467-018-03917-2
Journal volume & issue
Vol. 9, no. 1
pp. 1 – 14

Abstract

Read online

The mechanisms of PARP inhibitor (PARPi) resistance are poorly understood. Here the authors employ a CRISPR mutagenesis approach to identify PARP1 mutants causing PARPi resistance and find that PARP1 mutations are tolerated in BRCA1 mutated cells, suggesting alternative resistance mechanisms.