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- W4385380877 abstract "Abstract We sought to explore the hypothesis that host factors required for HIV-1 replication also play a role in latency reversal. Using a CRISPR gene library of putative HIV dependency factors, we performed a screen to identify genes required for latency reactivation. We identified several HIV-1 dependency factors that play a key role in HIV-1 latency reactivation including ELL , UBE2M , TBL1XR1 , HDAC3 , AMBRA1 , and ALYREF . Knockout of Cyclin T1 ( CCNT1 ), a component of the P-TEFb complex important for transcription elongation, was the top hit in the screen and had the largest effect on HIV latency reversal with a wide variety of latency reversal agents. Moreover, CCNT1 knockout prevents latency reactivation in a primary CD4+ T cell model of HIV latency without affecting activation of these cells. RNA sequencing data showed that CCNT1 regulates HIV-1 proviral genes to a larger extent than any other host gene and had no significant effects on RNA transcripts in primary T cells after activation. We conclude that CCNT1 function is redundant in T cells but is absolutely required for HIV latency reversal." @default.
- W4385380877 created "2023-07-30" @default.
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- W4385380877 date "2023-07-28" @default.
- W4385380877 modified "2023-10-14" @default.
- W4385380877 title "A CRISPR screen of HIV dependency factors reveals<i>CCNT1</i>is non-essential in T cells but required for HIV-1 reactivation from latency" @default.
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- W4385380877 doi "https://doi.org/10.1101/2023.07.28.551016" @default.
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