PMID- 28754347 OWN - NLM STAT- MEDLINE DCOM- 20180426 LR - 20191210 IS - 1873-5169 (Electronic) IS - 0196-9781 (Linking) VI - 95 DP - 2017 Sep TI - Inhibitory action of tongue sole LPXRFa, the piscine ortholog of gonadotropin-inhibitory hormone, on the signaling pathway induced by tongue sole kisspeptin in COS-7 cells transfected with their cognate receptors. PG - 62-67 LID - S0196-9781(17)30249-8 [pii] LID - 10.1016/j.peptides.2017.07.014 [doi] AB - Kisspeptin (Kiss) acts as a positive regulator of reproduction by acting on gonadotropes and gonadotropin-releasing hormone (GnRH) neurons. Despite its functional significance, the intricate web of intracellular signal transduction pathways in response to Kiss is still far from being fully understood in teleosts. Accordingly, we investigated the molecular mechanism of Kiss action and its possible interaction with LPXRFa signaling in this study. In vitro functional analysis revealed that synthetic tongue sole Kiss2 decapeptide increased the cAMP responsive element-dependent luciferase (CRE-luc) activity in COS-7 cells transfected with its cognate receptor, while this stimulatory effect was markedly reduced by two inhibitors of the adenylate cyclase (AC)/protein kinase A (PKA) pathway. Similarly, Kiss2 also significantly stimulated serum responsive element-dependent luciferase (SRE-luc) activity, whereas this stimulatory effect was evidently attenuated by two inhibitors of the phospholipase C (PLC)/protein kinase C (PKC) pathway. In addition, LPXRFa-2 suppressed Kiss2-elicited CRE-luc activity in a dose-dependent manner. Taken together, Kiss2 utilizes both AC/PKA and PLC/PKC pathways to exert its functions via its cognate receptor and LPXRFa may antagonize the action of Kiss2 by inhibiting kisspeptin signaling. As far as we know, this study is the first to characterize the half-smooth tongue sole kisspeptin and LPXRFa signaling pathway in COS-7 cells transfected with their cognate receptors and provides novel information on the interaction between LPXRFa system and kisspeptin system in teleosts. CI - Copyright (c) 2017. Published by Elsevier Inc. FAU - Wang, Bin AU - Wang B AD - Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Fisheries and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China. FAU - Yang, Guokun AU - Yang G AD - State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, South China Sea Bio-Resource Exploitation and Collaborative Innovation Center, Research Institute of Sun Yat-Sen University in Shen Zhen, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China. FAU - Liu, Quan AU - Liu Q AD - Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China. FAU - Qin, Jingkai AU - Qin J AD - State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, South China Sea Bio-Resource Exploitation and Collaborative Innovation Center, Research Institute of Sun Yat-Sen University in Shen Zhen, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China. FAU - Xu, Yongjiang AU - Xu Y AD - Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Fisheries and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China. FAU - Li, Wensheng AU - Li W AD - State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, South China Sea Bio-Resource Exploitation and Collaborative Innovation Center, Research Institute of Sun Yat-Sen University in Shen Zhen, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China. FAU - Liu, Xuezhou AU - Liu X AD - Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Fisheries and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China. Electronic address: liuxz@ysfri.ac.cn. FAU - Shi, Bao AU - Shi B AD - Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Fisheries and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China. LA - eng PT - Journal Article DEP - 20170725 PL - United States TA - Peptides JT - Peptides JID - 8008690 RN - 0 (Gonadotropins) RN - 0 (Kisspeptins) RN - 33515-09-2 (Gonadotropin-Releasing Hormone) RN - EC 2.7.11.11 (Cyclic AMP-Dependent Protein Kinases) RN - EC 2.7.11.13 (Protein Kinase C) RN - EC 3.1.4.- (Type C Phospholipases) RN - EC 4.6.1.1 (Adenylyl Cyclases) SB - IM MH - Adenylyl Cyclases/genetics/metabolism MH - Animals MH - COS Cells MH - Chlorocebus aethiops MH - Cyclic AMP-Dependent Protein Kinases/genetics MH - Fishes/genetics MH - Gene Expression Regulation/genetics MH - Gonadotrophs/chemistry/metabolism MH - Gonadotropin-Releasing Hormone/chemistry/genetics MH - Gonadotropins/*genetics/metabolism MH - Kisspeptins/*genetics/metabolism MH - Neurons/metabolism/*physiology MH - Protein Kinase C/genetics/metabolism MH - Reproduction/*genetics/physiology MH - Signal Transduction/genetics MH - Transfection MH - Type C Phospholipases/genetics/metabolism OTO - NOTNLM OT - Cynoglossus semilaevis OT - GnIH OT - Kisspeptin OT - LPXRFa OT - Signaling pathway EDAT- 2017/07/30 06:00 MHDA- 2018/04/27 06:00 CRDT- 2017/07/30 06:00 PHST- 2017/05/06 00:00 [received] PHST- 2017/07/07 00:00 [revised] PHST- 2017/07/24 00:00 [accepted] PHST- 2017/07/30 06:00 [pubmed] PHST- 2018/04/27 06:00 [medline] PHST- 2017/07/30 06:00 [entrez] AID - S0196-9781(17)30249-8 [pii] AID - 10.1016/j.peptides.2017.07.014 [doi] PST - ppublish SO - Peptides. 2017 Sep;95:62-67. doi: 10.1016/j.peptides.2017.07.014. Epub 2017 Jul 25.