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dNTP depletion and beyond: the multifaceted nature of SAMHD1-mediated viral restriction
Journal article   Open access   Peer reviewed

dNTP depletion and beyond: the multifaceted nature of SAMHD1-mediated viral restriction

Pak-Hin Hinson Cheung, Hua Yang and Li Wu
Journal of virology, Vol.99(5), e00302-25
05/20/2025
DOI: 10.1128/jvi.00302-25
PMCID: PMC12090746
PMID: 40277359
url
https://doi.org/10.1128/jvi.00302-25View
Published (Version of record) Open Access

Abstract

SAMHD1 is a dNTPase of mammalian cells. In 2011, SAMHD1 was found to be a host restriction factor against retroviruses through dNTP reduction. Recent research provides evidence that the antiviral mechanisms of SAMHD1 cannot be explained solely by its dNTPase activity. Instead, the versatility of SAMHD1-mediated restriction of various viruses suggests that its antiviral mechanisms extend beyond dNTP depletion. This explains the multifaceted and broad restriction functions of SAMHD1 that play a significant role in innate antiviral immunity.
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