PMID- 23472193 OWN - NLM STAT- MEDLINE DCOM- 20131203 LR - 20211021 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 8 IP - 3 DP - 2013 TI - Acetylcorynoline impairs the maturation of mouse bone marrow-derived dendritic cells via suppression of IkappaB kinase and mitogen-activated protein kinase activities. PG - e58398 LID - 10.1371/journal.pone.0058398 [doi] LID - e58398 AB - BACKGROUND: Dendritic cells (DCs) are major modulators in the immune system. One active field of research is the manipulation of DCs as pharmacological targets to screen novel biological modifiers for the treatment of inflammatory and autoimmune disorders. Acetylcorynoline is the major alkaloid component derived from Corydalis bungeana herbs. We assessed the capability of acetylcorynoline to regulate lipopolysaccharide (LPS)-stimulated activation of mouse bone marrow-derived DCs. METHODOLOGY/PRINCIPAL FINDINGS: Our experimental data showed that treatment with up to 20 microM acetylcorynoline does not cause cytotoxicity in cells. Acetylcorynoline significantly inhibited the secretion of tumor necrosis factor-alpha, interleukin-6, and interleukin-12p70 by LPS-stimulated DCs. The expression of LPS-induced major histocompatibility complex class II, CD40, and CD86 on DCs was also decreased by acetylcorynoline, and the endocytic capacity of LPS-stimulated DCs was restored by acetylcorynoline. In addition, LPS-stimulated DC-elicited allogeneic T-cell proliferation was blocked by acetylcorynoline, and the migratory ability of LPS-stimulated DCs was reduced by acetylcorynoline. Moreover, acetylcorynoline significantly inhibits LPS-induced activation of IkappaB kinase and mitogen-activated protein kinase. Importantly, administration of acetylcorynoline significantly attenuates 2,4-dinitro-1-fluorobenzene-induced delayed-type hypersensitivity. CONCLUSIONS/SIGNIFICANCE: Acetylcorynoline may be one of the potent immunosuppressive agents through the blockage of DC maturation and function. FAU - Fu, Ru-Huei AU - Fu RH AD - Graduate Institute of Immunology, China Medical University, and Center for Neuropsychiatry, China Medical University Hospital, Taichung, Taiwan. rhfu@mail.cmu.edu.tw FAU - Wang, Yu-Chi AU - Wang YC FAU - Liu, Shih-Ping AU - Liu SP FAU - Chu, Ching-Liang AU - Chu CL FAU - Tsai, Rong-Tzong AU - Tsai RT FAU - Ho, Yu-Chen AU - Ho YC FAU - Chang, Wen-Lin AU - Chang WL FAU - Chiu, Shao-Chih AU - Chiu SC FAU - Harn, Horng-Jyh AU - Harn HJ FAU - Shyu, Woei-Cherng AU - Shyu WC FAU - Lin, Shinn-Zong AU - Lin SZ LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130305 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Berberine Alkaloids) RN - 0 (Interleukin-6) RN - 0 (Lipopolysaccharides) RN - 0 (Plant Extracts) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (acetylcorynoline) RN - 187348-17-0 (Interleukin-12) RN - EC 2.7.11.10 (I-kappa B Kinase) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) SB - IM MH - Animals MH - Berberine Alkaloids/*pharmacology MH - Bone Marrow Cells/*cytology/drug effects MH - Cell Membrane/metabolism MH - Cell Movement MH - Cell Survival MH - Corydalis/metabolism MH - Dendritic Cells/*cytology/drug effects/metabolism MH - Endocytosis MH - I-kappa B Kinase/*metabolism MH - Inflammation MH - Interleukin-12/metabolism MH - Interleukin-6/metabolism MH - Lipopolysaccharides/pharmacology MH - Mice MH - Mitogen-Activated Protein Kinases/*metabolism MH - Plant Extracts/pharmacology MH - Tumor Necrosis Factor-alpha/metabolism PMC - PMC3589392 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2013/03/09 06:00 MHDA- 2013/12/16 06:00 PMCR- 2013/03/05 CRDT- 2013/03/09 06:00 PHST- 2012/11/05 00:00 [received] PHST- 2013/02/04 00:00 [accepted] PHST- 2013/03/09 06:00 [entrez] PHST- 2013/03/09 06:00 [pubmed] PHST- 2013/12/16 06:00 [medline] PHST- 2013/03/05 00:00 [pmc-release] AID - PONE-D-12-34112 [pii] AID - 10.1371/journal.pone.0058398 [doi] PST - ppublish SO - PLoS One. 2013;8(3):e58398. doi: 10.1371/journal.pone.0058398. Epub 2013 Mar 5.