PMID- 14632659 OWN - NLM STAT- MEDLINE DCOM- 20031215 LR - 20201208 IS - 0019-2805 (Print) IS - 1365-2567 (Electronic) IS - 0019-2805 (Linking) VI - 110 IP - 3 DP - 2003 Nov TI - Role of early- or late-phase activation of p38 mitogen-activated protein kinase induced by tumour necrosis factor-alpha or 2,4-dinitrochlorobenzene during maturation of murine dendritic cells. PG - 322-8 AB - Dendritic cells (DCs) are maturated by a variety of stimuli. However, the precise mechanisms underlying the maturation of DCs are not fully understood. In the present study, we analysed the effects of tumour necrosis factor-alpha (TNF-alpha) and 2,4-dinitrochlorobenzene (DNCB) on phenotypic maturation and p38 mitogen activated protein kinase (MAPK) activity, using a murine DC line. TNF-alpha markedly increased the surface expression of major histocompatibility complex (MHC) and costimulatory molecules, CD86 and CD80, on DCs. DNCB more markedly enhanced the surface expression of costimulatory molecules, but showed less stimulatory capability on MHC molecules, compared with TNF-alpha. Simultaneous treatment of DCs with TNF-alpha and DNCB showed additive enhancement of costimulatory molecule expression. TNF-alpha activated p38 MAPK in DCs only at an early time-point (15 min). In contrast, DNCB activated p38 MAPK at later time-points (3-6 hr). SB203580, a specific inhibitor of p38 MAPK, partially or markedly inhibited the phenotypic changes of DCs induced by TNF-alpha or DNCB, respectively. In addition, N-acetyl-l-cysteine, a reducing supplier, completely inhibited the DNCB-induced expression of MHC and costimulatory molecules, but not those induced by TNF-alpha. These findings demonstrate that TNF-alpha and DNCB activate the p38 MAPK pathway at an early and a late phase, respectively, and thereby induce DC maturation through different signal pathways. FAU - Iijima, Norifumi AU - Iijima N AD - Division of Immunobiology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan. FAU - Yanagawa, Yoshiki AU - Yanagawa Y FAU - Onoe, Kazunori AU - Onoe K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Immunology JT - Immunology JID - 0374672 RN - 0 (Antigens, CD) RN - 0 (B7-1 Antigen) RN - 0 (B7-2 Antigen) RN - 0 (Cd86 protein, mouse) RN - 0 (Dinitrochlorobenzene) RN - 0 (Membrane Glycoproteins) RN - 0 (Tumor Necrosis Factor-alpha) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) RN - WYQ7N0BPYC (Acetylcysteine) SB - IM MH - Acetylcysteine/pharmacology MH - Animals MH - Antigens, CD/metabolism MH - B7-1 Antigen/metabolism MH - B7-2 Antigen MH - Cell Differentiation/drug effects MH - Cells, Cultured MH - Dendritic Cells/*drug effects/enzymology/immunology MH - Dinitrochlorobenzene/antagonists & inhibitors/*pharmacology MH - Drug Synergism MH - Immunophenotyping MH - Membrane Glycoproteins/metabolism MH - Mice MH - Mice, Inbred BALB C MH - Mitogen-Activated Protein Kinases/drug effects/*metabolism MH - Tumor Necrosis Factor-alpha/*pharmacology MH - p38 Mitogen-Activated Protein Kinases PMC - PMC1783058 EDAT- 2003/11/25 05:00 MHDA- 2003/12/16 05:00 PMCR- 2004/11/01 CRDT- 2003/11/25 05:00 PHST- 2003/11/25 05:00 [pubmed] PHST- 2003/12/16 05:00 [medline] PHST- 2003/11/25 05:00 [entrez] PHST- 2004/11/01 00:00 [pmc-release] AID - 1746 [pii] AID - 10.1046/j.1365-2567.2003.01746.x [doi] PST - ppublish SO - Immunology. 2003 Nov;110(3):322-8. doi: 10.1046/j.1365-2567.2003.01746.x.