Journal
NATURE REVIEWS MICROBIOLOGY
Volume 10, Issue 10, Pages 675-680Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/nrmicro2862
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Funding
- French Agence Nationale de Recherche sur le SIDA et les Hepatite Virales (ANRS)
- SIDACTION
- AREVA
- Vaccine Research Institute (Creteil, France)
- Laboratoire d'Excellence Integrative Biology of Emerging Infectious Diseases (IBEID) programme
- Institut Pasteur
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HIV replication is limited by cellular restriction factors, such as APOBEC and tetherin, which themselves are counteracted by viral proteins. SAMHD1 was recently identified as a novel HIV restriction factor in myeloid cells, and was shown to be blocked by the lentiviral protein Vpx. SAMHD1 limits viral replication through an original mechanism: it hydrolyses intracellular dNTPs in non-cycling cells, thus decreasing the amount of these key substrates, which are required for viral DNA synthesis. In this Progress article, we describe how SAMHD1 regulates the pool of intracellular nucleotides to control HIV replication and the innate immune response.
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