PMID- 23609581 OWN - NLM STAT- MEDLINE DCOM- 20140116 LR - 20240109 IS - 1660-3397 (Electronic) IS - 1660-3397 (Linking) VI - 11 IP - 4 DP - 2013 Apr 22 TI - Immunomodulatory effect of marine cembrane-type diterpenoids on dendritic cells. PG - 1336-50 LID - 10.3390/md11041336 [doi] AB - Dendritic cells (DCs) are antigen presenting cells, which can present antigens to T-cells and play an important role in linking innate and adaptive immunity. DC maturation can be induced by many stimuli, including pro-inflammatory cytokines and bacterial products, such as lipopolysaccharides (LPS). Here, we examined the immunomodulatory effects of marine cembrane compounds, (9E,13E)-5-acetoxy-6-hydroxy-9,13-dimethyl-3- methylene-3,3a,4,5,6,7,8,11,12,14a-decahydro-2H-cyclotrideca[b]furan-2-one (1), (9E,13E)- 5-acetoxy-6-acetyl-9,13-dimethyl-3-methylene-3,3a,4,5,6,7,8,11,12,14a-decahydro-2H-cyclotrideca[b]furan-2-one (2), lobocrassin B (3), (-)14-deoxycrassin (4), cembranolide B (5) and 13-acetoxysarcocrassolide (6) isolated from a soft coral, Lobophytum crassum, on mouse bone marrow-derived dendritic cells (BMDCs). The results revealed that cembrane-type diterpenoids, especially lobocrassin B, effectively inhibited LPS-induced BMDC activation by inhibiting the production of TNF-alpha. Pre-treatment of BMDCs with Lobocrassin B for 1 h is essential to prohibit the following activation induced by various toll-like receptor (TLR) agonists, such as LPS, zymosan, lipoteichoic acid (LTA) and Pam2CSK4. Inhibition of NF-kappaB nuclear translocation by lobocrassin B, which is a key transcription factor for cytokine production in TLR signaling, was evident as assayed by high-content image analysis. Lobocrassin B attenuated DC maturation and endocytosis as the expression levels of MHC class II and the co-stimulatory molecules were downregulated, which may affect the function of DCs to initiate the T-cell responses. Thus, lobocrassin B may have the potential in treatment of immune dysregulated diseases in the future. FAU - Lin, Ching-Yen AU - Lin CY AD - Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan. jouyuan22@gmail.com FAU - Lu, Mei-Chin AU - Lu MC FAU - Su, Jui-Hsin AU - Su JH FAU - Chu, Ching-Liang AU - Chu CL FAU - Shiuan, David AU - Shiuan D FAU - Weng, Ching-Feng AU - Weng CF FAU - Sung, Ping-Jyun AU - Sung PJ FAU - Huang, Kao-Jean AU - Huang KJ LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130422 PL - Switzerland TA - Mar Drugs JT - Marine drugs JID - 101213729 RN - 0 (Diterpenes) RN - 0 (Immunologic Factors) RN - 0 (Lipopolysaccharides) RN - 0 (NF-kappa B) RN - 0 (Toll-Like Receptors) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (lobocrassin B) SB - IM MH - Animals MH - Anthozoa/*metabolism MH - Bone Marrow Cells/immunology/metabolism MH - Dendritic Cells/*drug effects/immunology MH - Diterpenes/isolation & purification/*pharmacology MH - Endocytosis/drug effects MH - Immunologic Factors/isolation & purification/*pharmacology MH - Lipopolysaccharides/toxicity MH - Male MH - Mice MH - Mice, Inbred C57BL MH - NF-kappa B/drug effects/metabolism MH - T-Lymphocytes/drug effects/immunology MH - Time Factors MH - Toll-Like Receptors/agonists/metabolism MH - Tumor Necrosis Factor-alpha/biosynthesis PMC - PMC3705408 EDAT- 2013/04/24 06:00 MHDA- 2014/01/17 06:00 PMCR- 2013/04/01 CRDT- 2013/04/24 06:00 PHST- 2013/02/26 00:00 [received] PHST- 2013/03/22 00:00 [revised] PHST- 2013/03/27 00:00 [accepted] PHST- 2013/04/24 06:00 [entrez] PHST- 2013/04/24 06:00 [pubmed] PHST- 2014/01/17 06:00 [medline] PHST- 2013/04/01 00:00 [pmc-release] AID - md11041336 [pii] AID - marinedrugs-11-01336 [pii] AID - 10.3390/md11041336 [doi] PST - epublish SO - Mar Drugs. 2013 Apr 22;11(4):1336-50. doi: 10.3390/md11041336.