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© Research
Publication : Nature reviews. Microbiology

Restricting HIV the SAMHD1 way: through nucleotide starvation

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Nature reviews. Microbiology - 28 Aug 2012

Ayinde D, Casartelli N, Schwartz O

Link to Pubmed [PMID] – 22926205

Nat. Rev. Microbiol. 2012 Oct;10(10):675-80

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.

http://www.ncbi.nlm.nih.gov/pubmed/22926205