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- W4295952210 abstract "Abstract In breast cancer, Poly(ADP-ribose) polymerase 3 (PARP3) has been identified as a key driver of tumor aggressiveness exemplifying its selective inhibition as a promising surrogate for clinical activity onto difficult-to-treat cancers. Here we explored the role of PARP3 in the oncogenicity of glioblastoma, the most aggressive type of brain cancer. The absence of PARP3 did not alter cell proliferation nor the in vivo tumorigenic potential of glioblastoma cells. We identified a physical and functional interaction of PARP3 with the histone H3 lysine 9 methyltransferase G9a. We show that PARP3 helps to adjust G9a-dependent repression of the adhesion genes Nfasc and Parvb and the hypoxia-responsive genes Hif-2α , Runx3 , Mlh1 , Ndrg1, Ndrg2 and Ndrg4 . Specifically for Nfasc , Parvb and Ndrg4 , PARP3/G9a cooperate for an adjusted establishment of the repressive mark H3K9me2. While examining the functional consequence in cell response to hypoxia, we discovered that PARP3 acts to maintain the cytoskeletal microtubule stability. As a result, the absence of PARP3 markedly increases the sensitivity of glioblastoma cells to microtubule-destabilizing agents providing a new therapeutic avenue for PARP3 inhibition in brain cancer therapy." @default.
- W4295952210 created "2022-09-16" @default.
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- W4295952210 date "2022-09-15" @default.
- W4295952210 modified "2023-10-17" @default.
- W4295952210 title "PARP3 supervises G9a-mediated repression of adhesion and hypoxia-responsive genes in glioblastoma cells" @default.
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- W4295952210 doi "https://doi.org/10.1038/s41598-022-19525-6" @default.
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