Epigenetic silencing by the SMC5/6 complex mediates HIV-1 latency.
Epigenetic silencing by the SMC5/6 complex mediates HIV-1 latency.
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DOI:
10.1038/s41564-022-01264-z
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发表时间:
2022-12
影响因子:
28.3
通讯作者:
中科院分区:
文献类型:
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After viral entry and reverse transcription, HIV-1 proviruses that fail to integrate are epigenetically silenced, but the underlying mechanism has remained unclear. Using a genome-wide CRISPR/Cas9 knockout screen, we identified the host SMC5/6 complex as essential for this epigenetic silencing. We show that SMC5/6 binds to and then SUMOylates unintegrated chromatinized HIV-1 DNA. Inhibition of SUMOylation, either by point mutagenesis of the SMC5/6 component NSMCE2—a SUMO E3 ligase—or using the SUMOylation inhibitor TAK-981, prevents epigenetic silencing, enables transcription from unintegrated HIV-1 DNA and rescues the replication of integrase-deficient HIV-1. Finally, we show that blocking SMC5/6 complex expression, or inhibiting its SUMOylation activity, suppresses the establishment of latent HIV-1 infections in both CD4+ T cell lines and primary human T cells. Collectively, our data show that the SMC5/6 complex plays a direct role in mediating the establishment of HIV-1 latency by epigenetically silencing integration-competent HIV-1 proviruses before integration. HIV-1 latency is enabled by SMC5/6-mediated epigenetic silencing of unintegrated viral genomes.
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影响因子:
46.9
作者:
Doench JG;Fusi N;Sullender M;Hegde M;Vaimberg EW;Donovan KF;Smith I;Tothova Z;Wilen C;Orchard R;Virgin HW;Listgarten J;Root DE
通讯作者:
Root DE
DOI:
10.1084/jem.20211427
发表时间:
2021-12-06
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Huang AS;Ramos V;Oliveira TY;Gaebler C;Jankovic M;Nussenzweig MC;Cohn LB
通讯作者:
Cohn LB
影响因子:
7.3
作者:
Langston, Steven P.;Grossman, Stephen;Pulukuri, Sai M.
通讯作者:
Pulukuri, Sai M.
影响因子:
6.7
作者:
Chavez L;Calvanese V;Verdin E
通讯作者:
Verdin E
影响因子:
5.2
作者:
Lee, Eunok;Bacchetti, Peter;Palmer, Sarah
通讯作者:
Palmer, Sarah