PMID- 22853328 OWN - NLM STAT- MEDLINE DCOM- 20130211 LR - 20220321 IS - 1348-0421 (Electronic) IS - 0385-5600 (Linking) VI - 56 IP - 10 DP - 2012 Oct TI - Hepatitis B virus surface antigen can activate human monocyte-derived dendritic cells by nuclear factor kappa B and p38 mitogen-activated protein kinase mediated signaling. PG - 719-27 LID - 10.1111/j.1348-0421.2012.00496.x [doi] AB - Hepatitis B virus Ag (HBsAg), a major antigen of hepatitis B virus (HBV), is also a vaccine component for prevention of HBV infection. Dendritic cells (DCs) of HBV carriers reportedly exhibit functional impairment. In this study, the aim was to investigate the effect of HBsAg on activation of human monocyte-derived dendritic cells (MD-DCs), and the subsequent signal transduction pathway. Treatment of MD-DCs with HBsAg resulted in enhanced cell surface expression of cluster of differentiation 80, CD83, CD86 and major histocompatibility complex class II, and increased interleukin (IL)-12 p40, IL-12p70, and IL-10 production. Furthermore, HBsAg treatment of MD-DCs with HBsAg resulted in enhanced T cell-stimulatory capacity and increased T cell secretion of interferon and IL-10. The pathway of MD-DCs activation by HBsAg was further investigated in the present study. Inhibition of nuclear factor (NF)-kappa B (kappaB) by helenalin and p38 mitogen-activated protein kinase (MAPK) by SB203580 prevented production of IL-12 p40, IL-12 p70, and IL-10. HBsAg also augmented MAPK phosphorylation. Thus, cytokine secretion of human MD-DCs by HBsAg is blocked by inhibition of the NF-kappaB and p38 MAPK pathways. Likewise, decreased inhibition of kappa B alpha concentrations and MAPK phosphorylation are critical for MD-DC maturation by HBsAg. These findings may provide a strategy for improving the prophylactic and therapeutic efficacy of vaccines and tumor therapies that utilize these pathways. CI - (c) 2012 The Societies and Wiley Publishing Asia Pty Ltd. FAU - Jan, Rong-Hwa AU - Jan RH AD - Institute of Medical Sciences, Tzu-Chi University, National Taiwan University Hospital, Taipei, Taiwan. FAU - Lin, Yu-Li AU - Lin YL FAU - Chen, Chia-Jung AU - Chen CJ FAU - Lin, Teng-Yi AU - Lin TY FAU - Hsu, Ya-Chun AU - Hsu YC FAU - Chen, Li-Kuang AU - Chen LK FAU - Chiang, Bor-Luen AU - Chiang BL LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Australia TA - Microbiol Immunol JT - Microbiology and immunology JID - 7703966 RN - 0 (Antigens, CD) RN - 0 (Hepatitis B Surface Antigens) RN - 0 (Histocompatibility Antigens Class II) RN - 0 (Interleukins) RN - 0 (NF-kappa B) RN - 9008-11-1 (Interferons) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) SB - IM MH - Antigens, CD/analysis MH - Cells, Cultured MH - Dendritic Cells/chemistry/*immunology MH - Hepatitis B Surface Antigens/*immunology MH - Histocompatibility Antigens Class II/analysis MH - Humans MH - Interferons/metabolism MH - Interleukins/metabolism MH - NF-kappa B/*metabolism MH - *Signal Transduction MH - p38 Mitogen-Activated Protein Kinases/*metabolism EDAT- 2012/08/03 06:00 MHDA- 2013/02/12 06:00 CRDT- 2012/08/03 06:00 PHST- 2012/08/03 06:00 [entrez] PHST- 2012/08/03 06:00 [pubmed] PHST- 2013/02/12 06:00 [medline] AID - 10.1111/j.1348-0421.2012.00496.x [doi] PST - ppublish SO - Microbiol Immunol. 2012 Oct;56(10):719-27. doi: 10.1111/j.1348-0421.2012.00496.x.