Effects of cytokines on the expression of CD40 and CD40 ligand in cultured human monocytes/macrophages / 第二军医大学学报

ABSTRACT

Objective： To investigate the effect of c ytokines (IFN-γ，TNF and IL-1) on the expression of CD40 and CD40 ligand (CD4 0L) in monocytes/macrophages. Methods： The mRNA expression of C D40 and CD40L was measured by RT-PCR and the CD40，CD40L expression on the mono cytes/macrophages were detected by flow cytometric analysis. Results： IFN-γ，TNF and IL-1 could not only significantly up-regulate the mRNA levels of CD40 and CD40L in cultured monocytes/macrophages, but also increase t he expression of CD40 and CD40L. Antioxidant VitE could reduce the expression o f CD40 and CD40L induced by IFN-γ，TNF and IL-1. Conclusion： IFN-γ，TNF and IL-1 can stimulate high expression of CD40 and CD40L . Antio xidant VitE can partially inhibit the expression of CD40 and CD40L induced by cy tokines in cultured monocytes/macrophages.