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SAMHD1: a new contributor to HIV-1 restriction in resting CD4+ T-cells
Journal article   Open access   Peer reviewed

SAMHD1: a new contributor to HIV-1 restriction in resting CD4+ T-cells

Li Wu
Retrovirology, Vol.9(1), pp.88-88
10/23/2012
DOI: 10.1186/1742-4690-9-88
PMCID: PMC3492151
PMID: 23092163
url
https://doi.org/10.1186/1742-4690-9-88View
Published (Version of record) Open Access

Abstract

Resting CD4+ T-cells are critical for establishing HIV-1 reservoirs. It has been known for over two decades that resting CD4+ T-cells are refractory to HIV-1 infection, but the underlying mechanisms are not fully understood. Compared with activated CD4+ T-cells that support HIV-1 infection, resting CD4+ T-cells have lower levels of dNTPs, which limit HIV-1 reverse transcription. The dNTPase SAMHD1 has been identified as an HIV-1 restriction factor in non-cycling myeloid cells. Two recent studies revealed that SAMHD1 restricts HIV-1 infection in resting CD4+ T-cells, suggesting a common mechanism of HIV-1 restriction in non-cycling cells that may contribute to viral immunopathogenesis.
CD4-Positive T-Lymphocytes - immunology HIV-1 - immunology HIV-1 - physiology Monomeric GTP-Binding Proteins - metabolism Models, Biological Humans SAM Domain and HD Domain-Containing Protein 1 CD4-Positive T-Lymphocytes - virology Nucleotides - metabolism Reverse Transcription

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