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A Variety of Mouse PYHIN Proteins Restrict Murine and Human Retroviruses
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Journal Article
A Variety of Mouse PYHIN Proteins Restrict Murine and Human Retroviruses
2024
Overview
PYHIN proteins are only found in mammals and play key roles in the defense against bacterial and viral pathogens. The corresponding gene locus shows variable deletion and expansion ranging from 0 genes in bats, over 1 in cows, and 4 in humans to a maximum of 13 in mice. While initially thought to act as cytosolic immune sensors that recognize foreign DNA, increasing evidence suggests that PYHIN proteins also inhibit viral pathogens by more direct mechanisms. Here, we examined the ability of all 13 murine PYHIN proteins to inhibit HIV-1 and murine leukemia virus (MLV). We show that overexpression of p203, p204, p205, p208, p209, p210, p211, and p212 strongly inhibits production of infectious HIV-1; p202, p207, and p213 had no significant effects, while p206 and p214 showed intermediate phenotypes. The inhibitory effects on infectious HIV-1 production correlated significantly with the suppression of reporter gene expression by a proviral Moloney MLV-eGFP construct and HIV-1 and Friend MLV LTR luciferase reporter constructs. Altogether, our data show that the antiretroviral activity of PYHIN proteins is conserved between men and mice and further support the key role of nuclear PYHIN proteins in innate antiviral immunity.
Publisher
MDPI AG,MDPI
Subject
Acquired immune deficiency syndrome
/ AIDS
/ Animals
/ Antigens
/ Control
/ DNA
/ Genes
/ HIV
/ HIV-1
/ Human immunodeficiency virus
/ Humans
/ immunity
/ Leukemia
/ Leukemia Virus, Murine - genetics
/ Leukemia Virus, Murine - immunology
/ loci
/ Mice
/ Nuclear Proteins - immunology
/ Nuclear Proteins - metabolism
/ Proteins
/ Retroviridae Infections - immunology
/ Retroviridae Infections - virology
/ Roles
/ Sensors
