PMID- 34144067 OWN - NLM STAT- MEDLINE DCOM- 20210817 LR - 20210817 IS - 1879-0003 (Electronic) IS - 0141-8130 (Linking) VI - 185 DP - 2021 Aug 31 TI - Molecular characterization, expression analysis and function identification of Pf_TNF-alpha and its two receptors Pf_TNFR1 and Pf_TNFR2 in yellow catfish (Pelteobagrus fulvidraco). PG - 176-193 LID - S0141-8130(21)01318-0 [pii] LID - 10.1016/j.ijbiomac.2021.06.090 [doi] AB - Inflammation is a common manifestation of body immunity and mediates a cascade of cytokines. Tumor necrosis factor-alpha (TNF-alpha), as a multi-effect cytokine, plays an important role in the inflammatory response by interacting with its receptor (TNFR). In this study, Pf_TNF-alpha, Pf_TNFR1 and Pf_TNFR2 genes were cloned from yellow catfish (Pelteobagrus fulvidraco), and bioinformatics analyses showed that the three genes were conserved and possessed similar sequence characteristics as those of other vertebrates. The qPCR results showed that Pf_TNF-alpha, Pf_TNFR1 and Pf_TNFR2 mRNAs were constitutively expressed in 14 tissues and the lymphocytes of four tissues from healthy adults. The mRNA expression levels of Pf_TNF-alpha and Pf_TNFR1 genes were significantly up-regulated in the spleen, liver, trunk kidney, head kidney and gill after Edwardsiella ictaluri infection, while the mRNA expression of Pf_TNFR2 was significantly up-regulated in the spleen, and down-regulated in the liver and gill. In the isolated peripheral blood leukocytes (PBLs) of yellow catfish, the expression of Pf_TNF-alpha mRNA was notably up-regulated and the two Pf_TNFR transcripts were distinctly down-regulated after stimulation with lipopolysaccharides (LPS), peptidoglycan (PGN), polyinosinic-polycytidylic acid (Poly I:C) and phytohaemagglutinin (PHA). After stimulated by recombinant (r) Pf_sTNF protein, the mRNA expressions of various inflammatory factors genes were up-regulated in the PBLs. Meanwhile, rPf_sTNF promoted the phagocytic activity of leukocytes, whereas the activity mediated by rPf_sTNF could be inhibited by rPf_TNFR1CRD2/3 and rPf_TNFR2CRD2/3. The up-regulation of TNF-alpha and IL-1beta mRNAs expression triggered by rPf_sTNF could be inhibited by MAPK inhibitor (VX-702) and NF-kappaB inhibitor (PDTC). rPf_sTNF induced the expression of FADD mRNA in PBLs and increased the apoptotic rate of PBLs, and inhibiting the NF-kappaB and MAPK signal pathways could enhance the apoptosis of PBLs. The results indicate that Pf_TNF-alpha, Pf_TNFR1 and Pf_TNFR2 play important roles in the immune response of yellow catfish to bacterial invasion. CI - Copyright (c) 2021. Published by Elsevier B.V. FAU - Hu, Yuan-Hong AU - Hu YH AD - National Demonstration Center for Experimental Aquaculture Education, Huazhong Agricultural University, Wuhan 430070, PR China; Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affairs, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, PR China. FAU - Zhou, Xu AU - Zhou X AD - National Demonstration Center for Experimental Aquaculture Education, Huazhong Agricultural University, Wuhan 430070, PR China; Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affairs, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, PR China. FAU - Jiang, Xin-Xin AU - Jiang XX AD - National Demonstration Center for Experimental Aquaculture Education, Huazhong Agricultural University, Wuhan 430070, PR China; Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affairs, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, PR China. FAU - Zhang, Gui-Rong AU - Zhang GR AD - National Demonstration Center for Experimental Aquaculture Education, Huazhong Agricultural University, Wuhan 430070, PR China; Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affairs, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, PR China. FAU - Shi, Ze-Chao AU - Shi ZC AD - Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, PR China. FAU - Ji, Wei AU - Ji W AD - National Demonstration Center for Experimental Aquaculture Education, Huazhong Agricultural University, Wuhan 430070, PR China; Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affairs, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, PR China. FAU - Ma, Xu-Fa AU - Ma XF AD - National Demonstration Center for Experimental Aquaculture Education, Huazhong Agricultural University, Wuhan 430070, PR China; Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affairs, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, PR China. FAU - Luo, Zun-Lan AU - Luo ZL AD - State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China. Electronic address: luozl@craes.org.cn. FAU - Wei, Kai-Jian AU - Wei KJ AD - National Demonstration Center for Experimental Aquaculture Education, Huazhong Agricultural University, Wuhan 430070, PR China; Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affairs, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, PR China. Electronic address: kjwei@mail.hzau.edu.cn. LA - eng PT - Journal Article DEP - 20210616 PL - Netherlands TA - Int J Biol Macromol JT - International journal of biological macromolecules JID - 7909578 RN - 0 (Fish Proteins) RN - 0 (Lipopolysaccharides) RN - 0 (Peptidoglycan) RN - 0 (Phytohemagglutinins) RN - 0 (Receptors, Tumor Necrosis Factor) RN - 0 (Tumor Necrosis Factor-alpha) RN - O84C90HH2L (Poly I-C) SB - IM MH - Animals MH - Catfishes/*genetics MH - Cloning, Molecular/*drug effects MH - Computational Biology MH - Female MH - Fish Proteins/genetics MH - Gene Expression Regulation/drug effects MH - Lipopolysaccharides/pharmacology MH - Male MH - Organ Specificity MH - Peptidoglycan/pharmacology MH - Phylogeny MH - Phytohemagglutinins/pharmacology MH - Poly I-C/pharmacology MH - Receptors, Tumor Necrosis Factor/*genetics MH - Tumor Necrosis Factor-alpha/*genetics OTO - NOTNLM OT - Functional analysis OT - Gene expression OT - Pelteobagrus fulvidraco OT - Pf_TNF-alpha OT - Pf_TNFR1 OT - Pf_TNFR2 EDAT- 2021/06/19 06:00 MHDA- 2021/08/18 06:00 CRDT- 2021/06/18 20:12 PHST- 2021/03/26 00:00 [received] PHST- 2021/05/18 00:00 [revised] PHST- 2021/06/12 00:00 [accepted] PHST- 2021/06/19 06:00 [pubmed] PHST- 2021/08/18 06:00 [medline] PHST- 2021/06/18 20:12 [entrez] AID - S0141-8130(21)01318-0 [pii] AID - 10.1016/j.ijbiomac.2021.06.090 [doi] PST - ppublish SO - Int J Biol Macromol. 2021 Aug 31;185:176-193. doi: 10.1016/j.ijbiomac.2021.06.090. Epub 2021 Jun 16.