HIV-1 infection of monocyte-derived macrophages reduces Fc and complement receptor expression
- PMID: 7907957
- PMCID: PMC1535088
- DOI: 10.1111/j.1365-2249.1994.tb07017.x
HIV-1 infection of monocyte-derived macrophages reduces Fc and complement receptor expression
Abstract
Fc receptor (FcR) and complement receptor (CR) expression on HIV-infected monocyte-derived macrophages may be an important determinant of immune function. We studied the effects of HIV-1 infection of macrophages in vitro on FcR and CR expression. Macrophages were infected with HIV-1DV 7 days following isolation, and the expression of Fc gamma RI-III and CR3 were measured at intervals thereafter by flow cytometry. We found a reduction in receptor expression with the percentage of cells expressing FcRI 14 days post infection declining from 77% to 13%, FcRII fell from 96% to 85%, FcRIII from 45% to 9%, and CR3 from 91% to 67% 14 days following infection. As these receptors are important for macrophage function, their down-modulation may contribute to the pathogenesis of HIV-related disease.
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