Schlafen 12 restricts HIV-1 latency reversal by a codon-usage dependent post-transcriptional block in CD4+ T cells.

Schlafen 12 restricts HIV-1 latency reversal by a codon-usage dependent post-transcriptional block in CD4+ T cells.
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DOI:
10.1038/s42003-023-04841-y
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发表时间:
2023-05-10
影响因子:
5.9
通讯作者:
Meyerhans, Andreas
Meyerhans, Andreas
中科院分区:
生物学2区
文献类型:
--
作者:
Kobayashi-Ishihara, Mie;Frazao Smutna, Katarina;Alonso, Florencia E.;Argilaguet, Jordi;Esteve-Codina, Anna;Geiger, Kerstin;Genesca, Meritxell;Grau-Exposito, Judith;Duran-Castells, Clara;Rogenmoser, Selina;Boettcher, Rene;Jungfleisch, Jennifer;Oliva, Baldomero;Martinez, Javier P.;Li, Manqing;David, Michael;Yamagishi, Makoto;Ruiz-Riol, Marta;Brander, Christian;Tsunetsugu-Yokota, Yasuko;Buzon, Maria J.;Diez, Juana;Meyerhans, Andreas

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Latency is a major barrier towards virus elimination in HIV-1-infected individuals. Yet, the mechanisms that contribute to the maintenance of HIV-1 latency are incompletely understood. Here we describe the Schlafen 12 protein (SLFN12) as an HIV-1 restriction factor that establishes a post-transcriptional block in HIV-1-infected cells and thereby inhibits HIV-1 replication and virus reactivation from latently infected cells. The inhibitory activity is dependent on the HIV-1 codon usage and on the SLFN12 RNase active sites. Within HIV-1-infected individuals, SLFN12 expression in PBMCs correlated with HIV-1 plasma viral loads and proviral loads suggesting a link with the general activation of the immune system. Using an RNA FISH-Flow HIV-1 reactivation assay, we demonstrate that SLFN12 expression is enriched in infected cells positive for HIV-1 transcripts but negative for HIV-1 proteins. Thus, codon-usage dependent translation inhibition of HIV-1 proteins participates in HIV-1 latency and can restrict the amount of virus release after latency reversal. In cell lines and HIV-1 patient PBMCs, the Schlafen 12 protein (SLFN12) is shown to be an HIV-1 restriction factor that inhibits HIV-1 replication and virus reactivation
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