Comprehensive synergy mapping links a BAF- and NSL-containing "supercomplex" to the transcriptional silencing of HIV-1.
Comprehensive synergy mapping links a BAF- and NSL-containing "supercomplex" to the transcriptional silencing of HIV-1.
复制标题
DOI:
10.1016/j.celrep.2023.113055
复制
发表时间:
2023-09-26
期刊:
影响因子:
8.8
通讯作者:
中科院分区:
文献类型:
--
作者:
Host repressors mediate HIV latency, but how they interactively silence the virus remains unclear. Here, we develop “reiterative enrichment and authentication of CRISPRi targets for synergies (REACTS)” to probe the genome for synergies between HIV transcription repressors. Using eight known host repressors as queries, we identify 32 synergies involving eleven repressors, including BCL7C, KANSL2, and SIRT2. Overexpression of these three proteins reduces HIV reactivation in Jurkat T cells and in CD4 T cells from people living with HIV on antiretroviral therapy (ART). We show that the BCL7C-containing BAF complex and the KANSL2-containing NSL complex form a “supercomplex” that increases inhibitory histone acetylation of the HIV long-terminal repeat (LTR) and its occupancy by the short variant of the acetyllysine reader Brd4. Collectively, we provide a validated platform for defining gene synergies genome wide, and the BAF-NSL “supercomplex” represents a potential target for overcoming HIV rebound after ART cessation. Li et al. develop a genome-wide screen, REACTS, to identify genes synergistically repressing HIV. They find 32 synergies involving eleven repressors, including BCL7C, KANSL2, and SIRT2. Overexpressing these proteins reduces HIV reactivation in cells. BCL7C and KANSL2 are part of a BAF-NSL “supercomplex” inhibiting HIV via histone acetylation and Brd4S.
登录
查看更多内容
影响因子:
16.6
作者:
Gatchalian J;Malik S;Ho J;Lee DS;Kelso TWR;Shokhirev MN;Dixon JR;Hargreaves DC
通讯作者:
Hargreaves DC
影响因子:
5.4
作者:
Dull, T;Zufferey, R;Naldini, L
通讯作者:
Naldini, L
影响因子:
8.8
作者:
Bradley, Todd;Ferrari, Guido;Browne, Edward P.
通讯作者:
Browne, Edward P.
影响因子:
14.9
作者:
Huang, Huachao;Kong, Weili;Zhu, Jian
通讯作者:
Zhu, Jian
影响因子:
16.6
作者:
Gaub, Aline;Sheikh, Bilal N.;Akhtar, Asifa
通讯作者:
Akhtar, Asifa