PMID- 30502465 OWN - NLM STAT- MEDLINE DCOM- 20190617 LR - 20190617 IS - 1095-9947 (Electronic) IS - 1050-4648 (Linking) VI - 86 DP - 2019 Mar TI - Identification and functional characterization of grass carp (Ctenopharyngodon idella) tumor necrosis factor receptor 2 and its soluble form with potentiality for targeting inflammation. PG - 393-402 LID - S1050-4648(18)30780-0 [pii] LID - 10.1016/j.fsi.2018.11.061 [doi] AB - Tumor necrosis factor-alpha (TNF-alpha) signals through two distinct cell surface receptors, TNFR1 and TNFR2 in mammals. In the present study, grass carp Tnfr2 (gcTnfr2) was isolated and characterized. Sequence alignment and phylogenetic analysis suggested that gcTnfr2 was a homolog of goldfish and zebrafish Tnfr2. Tissue distribution assay showed gctnfr2 transcripts were expressed in all examined tissues similar to gctnfr1. To functionally characterize the newly cloned molecule, gcTnfr2 was overexpressed in COS7 cell lines and it showed the ability to mediate the recombinant grass carp Tnf (rgcTnf)-alpha-triggered NF-kappaBeta activity and gcil1b promoter activity, clarifying its role in mediating Tnf-alpha signaling. The recombinant soluble form of gcTnfr2 (rgcsTnfr2) was prepared and it was able to interact with rgcTnf-alpha with higher affinity than that of rgcsTnfr1. Moreover, grass carp soluble Tnfr2 (gcsTnfr2) were detected in the culture medium of grass carp head kidney leukocytes (HKLs) and heat-inactivated A. hydrophila challenge significantly induced its production, indicating involvement of gcsTnfr2 in inflammation response. In agreement with this notion, rgcsTnfr2 effectively antagonized the effect of rgcTnf-alpha on il1b mRNA expression in HKLs, suggesting anti-Tnf-alpha property of gcsTnfr2. To strengthen the anti-inflammatory role of soluble Tnfr2, bacteria were injected intraperitoneally in grass carp followed by rgcsTnfr2. Hematoxylin-eosin (HE) staining of head kidney, spleen and intestine showed that rgcsTnfr2 could significantly improve infection-induced histopathological changes. These results functionally identified gcTnfr2 and its soluble form, particularly highlighting the role of gcsTnfr2 against Tnf-alpha-triggered inflammatory signaling. In this line, rgcsTnfr2 displayed anti-inflammatory potentiality during infection, thereby providing a powerful mediator of inflammation control in fish. CI - Copyright (c) 2018 Elsevier Ltd. All rights reserved. FAU - Zhang, Shengnan AU - Zhang S AD - School of Life Science and Technology, Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu, PR China. FAU - Wang, Xinyan AU - Wang X AD - School of Life Science and Technology, Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu, PR China. FAU - Li, Chenglong AU - Li C AD - School of Life Science and Technology, Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu, PR China. FAU - Feng, Shiyu AU - Feng S AD - School of Life Science and Technology, Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu, PR China. FAU - Zhang, Anying AU - Zhang A AD - School of Life Science and Technology, Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu, PR China. FAU - Yang, Kun AU - Yang K AD - School of Life Science and Technology, Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu, PR China. FAU - Zhou, Hong AU - Zhou H AD - School of Life Science and Technology, Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu, PR China. Electronic address: zhouhongzh@uestc.edu.cn. LA - eng PT - Journal Article DEP - 20181128 PL - England TA - Fish Shellfish Immunol JT - Fish & shellfish immunology JID - 9505220 RN - 0 (Fish Proteins) RN - 0 (Receptors, Tumor Necrosis Factor, Type II) SB - IM MH - Aeromonas hydrophila/physiology MH - Amino Acid Sequence MH - Animals MH - Fish Diseases/*immunology MH - Fish Proteins/chemistry/genetics/immunology MH - Gene Expression Profiling/veterinary MH - Gene Expression Regulation/*immunology MH - Gram-Negative Bacterial Infections/immunology/veterinary MH - Immunity, Innate/*genetics MH - Inflammation/immunology/veterinary MH - Perciformes/*genetics/*immunology MH - Phylogeny MH - Receptors, Tumor Necrosis Factor, Type II/chemistry/*genetics/*immunology MH - Sequence Alignment/veterinary MH - Signal Transduction OTO - NOTNLM OT - Anti-inflammation OT - Bacterial infection OT - Functional identification OT - Grass carp OT - Soluble form OT - Tnf-alpha receptor 2 EDAT- 2018/12/05 06:00 MHDA- 2019/06/18 06:00 CRDT- 2018/12/04 06:00 PHST- 2018/08/12 00:00 [received] PHST- 2018/10/15 00:00 [revised] PHST- 2018/11/27 00:00 [accepted] PHST- 2018/12/05 06:00 [pubmed] PHST- 2019/06/18 06:00 [medline] PHST- 2018/12/04 06:00 [entrez] AID - S1050-4648(18)30780-0 [pii] AID - 10.1016/j.fsi.2018.11.061 [doi] PST - ppublish SO - Fish Shellfish Immunol. 2019 Mar;86:393-402. doi: 10.1016/j.fsi.2018.11.061. Epub 2018 Nov 28.