HIV-1 restriction by endogenous APOBEC3G in the myeloid cell line THP-1
نویسندگان
چکیده
منابع مشابه
Retroviral Restriction Factor APOBEC3G Delays the Initiation of DNA Synthesis by HIV-1 Reverse Transcriptase
It is well established that the cytosine deaminase APOBEC3G can restrict HIV-1 virions in the absence of the virion infectivity factor (Vif) by inducing genome mutagenesis through deamination of cytosine to uracil in single-stranded HIV-1 (-)DNA. However, whether APOBEC3G is able to restrict HIV-1 using a deamination-independent mode remains an open question. In this report we use in vitro prim...
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The DNA deaminase APOBEC3G converts cytosines to uracils in retroviral cDNA, which are immortalized as genomic strand G-to-A hypermutations by reverse transcription. A single round of APOBEC3G-dependent mutagenesis can be catastrophic, but evidence suggests that sublethal levels contribute to viral genetic diversity and the associated problems of drug resistance and immune escape. APOBEC3G exhi...
متن کاملEffects of berberine on the secretion of cytokines and expression of genes involved in cell cycle regulation in THP-1 monocytic cell line
Objective(s): Current acute myeloid leukemia (AML) therapeutic strategies have irreversible side-effects. Berberine (BBR) is an isoquinoline alkaloid, which has been known as an aryl hydrocarbon receptor (AhR) ligand. AhR is a cytoplasmic receptor, which is involved in the regulation of cellular and immune responses. Here, we investigated the expression profile of genes involved in the cell cyc...
متن کاملHIV-1 subtype variability in Vif derived from molecular clones affects APOBEC3G-mediated host restriction.
BACKGROUND The host protein APOBEC3G (A3G) can limit HIV-1 replication. Its protective effect is overcome by the HIV-1 'viral infectivity factor' (Vif), which targets A3G for proteosomal degradation. Although Vif is considered to be essential for HIV-1 replication, the effect of Vif variability among commonly used HIV-1 molecular clones of different genetic backgrounds on viral infectiousness a...
متن کاملDeaminase-independent inhibition of HIV-1 reverse transcription by APOBEC3G
APOBEC3G (A3G), a host protein that inhibits HIV-1 reverse transcription and replication in the absence of Vif, displays cytidine deaminase and single-stranded (ss) nucleic acid binding activities. HIV-1 nucleocapsid protein (NC) also binds nucleic acids and has a unique property, nucleic acid chaperone activity, which is crucial for efficient reverse transcription. Here we report the interplay...
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ژورنال
عنوان ژورنال: Journal of General Virology
سال: 2019
ISSN: 0022-1317,1465-2099
DOI: 10.1099/jgv.0.001276