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CRISPRi/a functional screen with PARP7 inhibitor in NCI-H1373 cells


ABSTRACT: PARP7 is a monoPARP that catalyzes the transfer of single units of ADP-ribose onto substrates to change their function. PARP7 expression is increased by aromatic hydrocarbons and cellular stress, and the PARP7 gene is amplified in cancers, especially in those of the upper aerodigestive tract. PARP7 is a negative regulator of nucleic acid sensing in tumor cells. Inhibition of PARP7 restores Type I IFN signaling responses to nucleic acids in tumor models. Restored signaling can directly inhibit cell proliferation and activate the immune system, both of which contribute to tumor regression. RBN-2397 is a potent and selective inhibitor of PARP7. To further explore how RBN-2397 inhibits NCI-H1373 cell proliferation, we performed unbiased genetic screens using whole-genome CRISPRi and CRISPRa libraries (le Sage et al., 2017; Jost and Weissman, 2018). Comparison of CRISPRi and CRISPRa phenotype scores highlights genes with opposing functionality upon RBN-2397 treatment.

ORGANISM(S): Homo sapiens

PROVIDER: GSE178386 | GEO | 2021/06/18

REPOSITORIES: GEO

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