Spotlight on HIV-1 Nef: SERINC3 and SERINC5 Identified As Restriction Factors Antagonized by the Pathogenesis Factor
Overview
Authors
Affiliations
The Nef protein is an accessory gene product encoded by human immunodeficiency virus types 1 and 2 (HIV-1/-2) and simian immunodeficiency virus (SIV) that boosts virus replication in the infected host and accelerates disease progression. Unlike the HIV-1 accessory proteins Vif, Vpr and Vpu, Nef was, until recently, not known to antagonize the antiviral activity of a host cell restriction factor. Two recent reports now describe the host cell proteins serine incorporator 3 and 5 (SERINC3 and SERINC5) as potent inhibitors of HIV-1 particle infectivity and demonstrate that Nef counteracts these effects. These findings establish SERINC3/5 as restrictions to HIV replication in human cells and define a novel activity for the HIV pathogenesis factor Nef.
Li W, Qu M, Zhang T, Li G, Wang R, Tian Y J Biol Chem. 2024; 301(1):108058.
PMID: 39653243 PMC: 11750542. DOI: 10.1016/j.jbc.2024.108058.
Beyond Impairment of Virion Infectivity: New Activities of the Anti-HIV Host Cell Factor SERINC5.
Sid Ahmed S, Bajak K, Fackler O Viruses. 2024; 16(2).
PMID: 38400059 PMC: 10892966. DOI: 10.3390/v16020284.
SERINC proteins potentiate antiviral type I IFN production and proinflammatory signaling pathways.
Zeng C, Waheed A, Li T, Yu J, Zheng Y, Yount J Sci Signal. 2021; 14(700):eabc7611.
PMID: 34520227 PMC: 9549701. DOI: 10.1126/scisignal.abc7611.
Immune subversion by HIV: part B.
Vanpouille C, Margolis L EMBO J. 2021; 39(24):e107167.
PMID: 33438774 PMC: 7737603. DOI: 10.15252/embj.2020107167.
Antiviral Role of Serine Incorporator 5 (SERINC5) Proteins in Classical Swine Fever Virus Infection.
Li W, Zhang Z, Zhang L, Li H, Fan S, Zhu E Front Microbiol. 2020; 11:580233.
PMID: 33013817 PMC: 7498654. DOI: 10.3389/fmicb.2020.580233.