An BY, Xie Q, Wang H, Jia NN, Shen HC, Cai W, Yu H, Guo Q. Expression and significance of interferon regulatory factor 3 of peripheral blood dendritic cells in HBV-infected patients.
Shijie Huaren Xiaohua Zazhi 2008;
16:1873-1879. [DOI:
10.11569/wcjd.v16.i17.1873]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To elucidate the roles of interferon regulatory factor-3 (IRF3) of peripheral blood dendritic cells (DCs ) in immune response induced by hepatitis B virus (HBV) .
METHODS: Monocytes CD14+ were separated in 28 chronic HBV-infected patients (CH) group and 27 healthy volunteers group (control group) using magnetic activated cell sorting. Then, monocytes were placed on a culture medium of RPMI 1640, which were later induced into premature MoDC using hGM-CSF and hIL-4. We stimulated DCs with PolyI:C. The mRNA expressions of IRF3, TLR3 and IFN-β were detected using real time PCR, TLR3 expression was detected using flow cytometry and levels of IFN-β in supernatant were evaluated by ELISA.
RESULTS: In the control group, there was significant elevation of IRF3 and IFN-β level at 12 h following stimulation of PolyI:C compared with that at 0 h. Expression level of IRF3 rose and then declined gradually at 24h and 48 h (86.27% ± 14.74% vs 70.78% ± 11.16%, P < 0.05). In CH group, there was no significant up-regulation of TLR 3 at 0, 12, 24 h while a significant up-regulation was observed at 48 h (85.46% ± 6.87% vs 69.17% ± 20.43%, P < 0.05). The concentration of IFN-β had no significant changes at 0 h, 12 h, 24 h and 48 h in CH groups, while there was a significant higher up-regulation of IFN-β mRNA expression level at 0, 12, 24 h in the control group than in CH group (P < 0.05).
CONCLUSION: Chronic HBV-infected patients fail to activate IRF 3 following virus contraction and thereby are unable to secrete enough IFN-β to eradicate HBV virus, which may partly contribute to persistent infection of HBV.
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