TY - JOUR
T1 - CRISPR/CAS9-based DNA damage response screens reveal gene-drug interactions
AU - Su, Dan
AU - Feng, Xu
AU - Colic, Medina
AU - Wang, Yunfei
AU - Zhang, Chunchao
AU - Wang, Chao
AU - Tang, Mengfan
AU - Hart, Traver
AU - Chen, Junjie
N1 - Publisher Copyright:
© 2020
PY - 2020/3
Y1 - 2020/3
N2 - DNA damage response (DDR) is critically important for cell survival, genome maintenance, and its defect has been exploited therapeutically in cancer treatment. Many DDR-targeting agents have been generated and have entered the clinic and/or clinical trials. In order to provide a global and unbiased view of DDR network, we designed a focused CRISPR library targeting 365 DDR genes and performed CRISPR screens on the responses to several DDR inhibitors and DNA-damaging agents in 293A cells. With these screens, we determined responsive pathways enriched under treatment with different types of small-molecule agents. Additionally, we showed that POLE3/4-deficient cells displayed enhanced sensitivity to an ATR inhibitor, a PARP inhibitor, and camptothecin. Moreover, by performing DDR screens in isogenic TP53 wild-type and TP53 knock-out cell lines, our results suggest that the performance of our CRISPR DDR dropout screens is independent of TP53 status. Collectively, our findings indicate that CRISPR DDR screens can be used to identify potential targets of small-molecule drugs and reveal that TP53 status does not affect the outcome of these screens.
AB - DNA damage response (DDR) is critically important for cell survival, genome maintenance, and its defect has been exploited therapeutically in cancer treatment. Many DDR-targeting agents have been generated and have entered the clinic and/or clinical trials. In order to provide a global and unbiased view of DDR network, we designed a focused CRISPR library targeting 365 DDR genes and performed CRISPR screens on the responses to several DDR inhibitors and DNA-damaging agents in 293A cells. With these screens, we determined responsive pathways enriched under treatment with different types of small-molecule agents. Additionally, we showed that POLE3/4-deficient cells displayed enhanced sensitivity to an ATR inhibitor, a PARP inhibitor, and camptothecin. Moreover, by performing DDR screens in isogenic TP53 wild-type and TP53 knock-out cell lines, our results suggest that the performance of our CRISPR DDR dropout screens is independent of TP53 status. Collectively, our findings indicate that CRISPR DDR screens can be used to identify potential targets of small-molecule drugs and reveal that TP53 status does not affect the outcome of these screens.
KW - CRISPR screen
KW - DNA damage response
KW - TP53
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U2 - 10.1016/j.dnarep.2020.102803
DO - 10.1016/j.dnarep.2020.102803
M3 - Article
C2 - 31991288
AN - SCOPUS:85078087432
SN - 1568-7864
VL - 87
JO - DNA Repair
JF - DNA Repair
M1 - 102803
ER -