DNA double-strand break repair pathway regulates PD-L1 expression in cancer cells.
DNA double-strand break repair pathway regulates PD-L1 expression in cancer cells.
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DOI:
10.1038/s41467-017-01883-9
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发表时间:
2017-11-24
影响因子:
16.6
通讯作者:
Shibata A
中科院分区:
文献类型:
--
作者:
Sato H;Niimi A;Yasuhara T;Permata TBM;Hagiwara Y;Isono M;Nuryadi E;Sekine R;Oike T;Kakoti S;Yoshimoto Y;Held KD;Suzuki Y;Kono K;Miyagawa K;Nakano T;Shibata A
Accumulating evidence suggests that exogenous cellular stress induces PD-L1 upregulation in cancer. A DNA double-strand break (DSB) is the most critical type of genotoxic stress, but the involvement of DSB repair in PD-L1 expression has not been investigated. Here we show that PD-L1 expression in cancer cells is upregulated in response to DSBs. This upregulation requires ATM/ATR/Chk1 kinases. Using an siRNA library targeting DSB repair genes, we discover that BRCA2 depletion enhances Chk1-dependent PD-L1 upregulation after X-rays or PARP inhibition. In addition, we show that Ku70/80 depletion substantially enhances PD-L1 upregulation after X-rays. The upregulation by Ku80 depletion requires Chk1 activation following DNA end-resection by Exonuclease 1. DSBs activate STAT1 and STAT3 signalling, and IRF1 is required for DSB-dependent PD-L1 upregulation. Thus, our findings reveal the involvement of DSB repair in PD-L1 expression and provide mechanistic insight into how PD-L1 expression is regulated after DSBs. PD-L1 is upregulated in many cancers due to exogenous cellular stress. Here the authors show that PD-L1 is upregulated in response to DNA double strand breaks via STAT and IRF1 signalling.
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影响因子:
20.3
作者:
Green, Michael R.;Monti, Stefano;Shipp, Margaret A.
通讯作者:
Shipp, Margaret A.
影响因子:
4.4
作者:
Iwai, Y;Terawaki, S;Honjo, T
通讯作者:
Honjo, T
影响因子:
64.5
作者:
Hugo W;Zaretsky JM;Sun L;Song C;Moreno BH;Hu-Lieskovan S;Berent-Maoz B;Pang J;Chmielowski B;Cherry G;Seja E;Lomeli S;Kong X;Kelley MC;Sosman JA;Johnson DB;Ribas A;Lo RS
通讯作者:
Lo RS
影响因子:
64.8
作者:
Herbst RS;Soria JC;Kowanetz M;Fine GD;Hamid O;Gordon MS;Sosman JA;McDermott DF;Powderly JD;Gettinger SN;Kohrt HE;Horn L;Lawrence DP;Rost S;Leabman M;Xiao Y;Mokatrin A;Koeppen H;Hegde PS;Mellman I;Chen DS;Hodi FS
通讯作者:
Hodi FS
DOI:
10.1073/pnas.192461099
发表时间:
2002-09-17
影响因子:
11.1
作者:
Iwai, Y;Ishida, M;Minato, N
通讯作者:
Minato, N