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- W2117891939 abstract "Proliferating cells are preferentially susceptible to infection by retroviruses. Sterile α motif and HD domain-containing protein-1 (SAMHD1) is a recently described deoxynucleotide phosphohydrolase controlling the size of the intracellular deoxynucleotide triphosphate (dNTP) pool, a limiting factor for retroviral reverse transcription in noncycling cells. Proliferating (Ki67(+)) primary CD4(+) T cells or macrophages express a phosphorylated form of SAMHD1 that corresponds with susceptibility to infection in cell culture. We identified cyclin-dependent kinase (CDK) 6 as an upstream regulator of CDK2 controlling SAMHD1 phosphorylation in primary T cells and macrophages susceptible to infection by HIV-1. In turn, CDK2 was strongly linked to cell cycle progression and coordinated SAMHD1 phosphorylation and inactivation. CDK inhibitors specifically blocked HIV-1 infection at the reverse transcription step in a SAMHD1-dependent manner, reducing the intracellular dNTP pool. Our findings identify a direct relationship between control of the cell cycle by CDK6 and SAMHD1 activity, which is important for replication of lentiviruses, as well as other viruses whose replication may be regulated by intracellular dNTP availability." @default.
- W2117891939 created "2016-06-24" @default.
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- W2117891939 date "2014-07-11" @default.
- W2117891939 modified "2023-10-18" @default.
- W2117891939 title "Cell Cycle Control and HIV-1 Susceptibility Are Linked by CDK6-Dependent CDK2 Phosphorylation of SAMHD1 in Myeloid and Lymphoid Cells" @default.
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- W2117891939 doi "https://doi.org/10.4049/jimmunol.1400873" @default.
- W2117891939 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25015816" @default.
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