Abstract
ObjectiveChronic activation of the innate immune system plays a central role in HIV-1 disease progression. Negative regulation of innate immunity is critical in preventing the effects of this excessive activation; however, the molecules involved in this process remain to be identified. In this study, we compared the expression of immune regulation genes between HIV-1 infected individuals and healthy control participants to identify genes involved in the regulation of innate immunity in HIV-1 infection. MethodsWe conducted gene expression analysis of a series of immune regulatory genes in viremic treatment-naïve HIV-positive donors, patients receiving highly active antiretroviral therapy (HAART) and HIV-negative healthy control participants. Reverse transcription-quantitative PCR (RT-qPCR) was conducted to determine the expression levels of genes in peripheral blood mononuclear cells isolated from all participants. The spearman correlation test and linear regression analysis were performed to evaluate the correlation between gene expression level and viral load. ResultsThe following differentially expressed genes were identified: A20, CYLD, DDX24, MARCH5, MKRN2, PTP1B, RNF125, S1PR1, SOCS1, IFI35, RBCK1, TTLL12 and USP18. The three most differentially expressed genes were A20, S1PR1, and USP18. USP18 correlated positively with viral load. ConclusionThirteen immune regulation genes were identified in comparisons of viremic treatment-naïve HIV-positive donors, HAART-treated patients and healthy control participants, indicating the potential of these genes as therapeutic targets.
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