HBV Transinfected Enhances the PD-L Expression of Cytokines Stimulating
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To investigate whether the PD-L expression in the liver cell lines transinfected with HBV (HepG2.2.15 cells) can be up-regulated after cytokines stimulating.
To apply the liver cell lines (HepG2 cells and HepG2.2.15 cells) as a model, the cells were stimulated with IL-4, IFN-alpha and IFN-gamma (final concentration were 10 ng/ml, stimulated for 12 hours) and RT-PCR was carried out to determine the PD-L expression before and after cytokines stimulating.
Whether or not transinfected with HBV, IFN-alpha and IFN-gamma both can induce the liver cell lines (HepG2 cells and HepG2.2.15 cells) PD-L1 expression while IL-4 can not; IL-4, IFN-alpha, IFN-gamma all can induce the PD-L2 expression in HepG2.2.15 cells which was transinfected with HBV, only IFN-gamma can induce the PD-L2 expression in HepG2 cells which was not transinfected with HBV.
IFN-alpha, IFN-gamma both can induce the PD-L1 expression in HepG2 cells and HepG2.2.15 cells, while it is easy for cytokines to induce the PD-L2 expression in HepG2.2.15 cells which was transinfected with HBV, this may provide a potential mechanism of the molecular basis for chronic HBV infection.
Wu, X. J.,
Zhu, M. H.,
& Wang, G. Q.
(2008). HBV Transinfected Enhances the PD-L Expression of Cytokines Stimulating. Chinese Journal of Experimental and Clinical Virology, 22 (5), 333-335.