PMID- 26208751 OWN - NLM STAT- MEDLINE DCOM- 20160714 LR - 20220311 IS - 1095-9947 (Electronic) IS - 1050-4648 (Linking) VI - 46 IP - 2 DP - 2015 Oct TI - Cytokine effects and cellular signaling pathways of grass carp HSP70 in head kidney leukocytes. PG - 550-6 LID - S1050-4648(15)30079-6 [pii] LID - 10.1016/j.fsi.2015.07.016 [doi] AB - In mammals, the cytokine effects of heat shock protein 70 (HSP70) have been well documented. However, the precise role and molecular mechanism of fish HSP70 in cytokine production are poorly understood. In the present study, recombinant grass carp HSP70 (rgcHSP70) was prepared by using the E. coli expression system and its effect on interleukin (IL)-1beta (gcil1beta) and tumor necrosis factor (TNF)-alpha (gctnfalpha) mRNA expression was examined in grass carp head kidney leukocytes (HKLs). Compared with its heated-inactivated protein, rgcHSP70 enhanced the mRNA levels of these two cytokines in a dose- and time-dependent manner. More importantly, the results of enzyme-linked immunoabsorbent assay (ELISA) showed that rgcHSP70 markedly stimulated gcIL-1beta and gcTNF-alpha secretion from the HKLs, for the first time indicating the ability of HSP70 to regulate cytokine release in fish. Moreover, rgcHSP70 displayed more potential to increase the cytokines' release instead of their transcription in the same cell model. Subsequently, the signaling mechanisms governing the cytokine effect of rgcHSP70 were investigated, showing that rgcHSP70-induced gcil1beta mRNA expression was suppressed by inhibiting p38 MAPK and NF-kappaB pathways, while the stimulation of rgcHSP70 on gctnfalpha mRNA expression were blocked by inhibiting JNK MAPK and NF-kappaB pathways. In parallel, rgcHSP70 was also shown to activate NF-kappaB pathway through regulating grass carp IkappaBalpha protein levels in a time-dependent oscillation. These findings provide further understanding of cytokine effect and regulatory mechanism of HSP70 in fish and new insights into the roles of HSP70 in teleost immunity. CI - Copyright (c) 2015 Elsevier Ltd. All rights reserved. FAU - Zhang, Anying AU - Zhang A AD - School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, PR China. FAU - Guo, Yafei AU - Guo Y AD - School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, PR China. FAU - Zhang, Shengnan AU - Zhang S AD - School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, PR China. FAU - Fan, Xinchi AU - Fan X AD - School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, PR China. FAU - Wang, Xinyan AU - Wang X AD - School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, PR China. FAU - Zhou, Xiaofei AU - Zhou X AD - School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, PR China. FAU - Yang, Kun AU - Yang K AD - School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, PR China. FAU - Zhou, Hong AU - Zhou H AD - School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, PR China. Electronic address: zhouhongzh@uestc.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150722 PL - England TA - Fish Shellfish Immunol JT - Fish & shellfish immunology JID - 9505220 RN - 0 (Cytokines) RN - 0 (Fish Proteins) RN - 0 (HSP70 Heat-Shock Proteins) RN - 0 (NF-kappa B) RN - 0 (Recombinant Proteins) SB - IM MH - *Adaptive Immunity MH - Animals MH - Carps/*genetics/immunology/metabolism MH - Cytokines/metabolism MH - Escherichia coli/genetics MH - Fish Proteins/*genetics/metabolism MH - HSP70 Heat-Shock Proteins/*genetics/metabolism MH - Head Kidney/immunology MH - *Immunity, Innate MH - Leukocytes/immunology MH - NF-kappa B/genetics/metabolism MH - Organisms, Genetically Modified/genetics MH - Recombinant Proteins/genetics/metabolism MH - Signal Transduction OTO - NOTNLM OT - Cytokine effect OT - Cytokine secretion OT - Grass carp OT - Head kidney leukocyte OT - Heat shock protein 70 OT - Signaling pathway EDAT- 2015/07/26 06:00 MHDA- 2016/07/15 06:00 CRDT- 2015/07/26 06:00 PHST- 2015/04/16 00:00 [received] PHST- 2015/07/07 00:00 [revised] PHST- 2015/07/19 00:00 [accepted] PHST- 2015/07/26 06:00 [entrez] PHST- 2015/07/26 06:00 [pubmed] PHST- 2016/07/15 06:00 [medline] AID - S1050-4648(15)30079-6 [pii] AID - 10.1016/j.fsi.2015.07.016 [doi] PST - ppublish SO - Fish Shellfish Immunol. 2015 Oct;46(2):550-6. doi: 10.1016/j.fsi.2015.07.016. Epub 2015 Jul 22.