PMID- 32325216 OWN - NLM STAT- MEDLINE DCOM- 20210115 LR - 20210115 IS - 1095-9947 (Electronic) IS - 1050-4648 (Linking) VI - 102 DP - 2020 Jul TI - CCR7, CD80/86 and CD83 in yellow catfish (Pelteobagrus fulvidraco): Molecular characteristics and expression patterns with bacterial infection. PG - 228-242 LID - S1050-4648(20)30272-2 [pii] LID - 10.1016/j.fsi.2020.04.026 [doi] AB - Dendritic cells (DCs) have a strong ability to stimulate naive T lymphocyte proliferation, so DCs play an important regulatory role in the initiation of the specific immune response. DCs cannot play the role of antigen presentation without the expression of surface molecules. The chemokine receptor CCR7 and the costimulatory molecules CD80/86 and CD83 are not only markers of DC maturation but also important functional molecules in the immune response of DC-T cells. In this study, partial cDNA sequences of CCR7, CD80/86 and CD83 were obtained by rapid amplification of cDNA ends (RACE) technology from yellow catfish. Bioinformatics analysis of deduced amino acid sequences of these three genes showed that CCR7, CD80/86 and CD83 genes in yellow catfish have similar functional domains to the homologs in other vertebrates, which indicated that the functions of these genes may be somewhat conserved during the evolution process. Afterward, the expression characteristics of these three genes in different tissues were detected by q-PCR. This result indicated that CCR7, CD80/86 and CD83 were expressed in all examined tissues, and the highest expression levels of CCR7 and CD80/86 and CD83 were detected in the trunk kidney, muscle and midgut, respectively. Meanwhile, the expression levels of CCR7 and CD80/86 were lowest in the gill, and the expression of CD83 was lowest in the stomach. Finally, healthy yellow catfish were infected with A.hydrophila (1.0 x 10(7) CFU/mL) or E.ictaluri (1.0 x 10(6) CFU/mL), q-PCR results indicated that both pathogenic bacteria can induce significant upregulation of CCR7, CD80/86 and CD83 in immune organs, and the expression levels of these genes in the intestine were higher than those in the skin and gill. Our results in this study provide a molecular basis for exploring the role of CCR7, CD80/86 and CD83 in the immune responses induced by bacteria, and can help us to understand the difference of immune responses induced by extracellular and intracellular bacteria. CI - Copyright (c) 2020 Elsevier Ltd. All rights reserved. FAU - Wang, Hui AU - Wang H AD - College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China; Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, 430070, China. FAU - Xu, Lili AU - Xu L AD - College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China; Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan, 430070, China. FAU - Wu, Zhixin AU - Wu Z AD - College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China; Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, 430070, China. FAU - Chen, Xiaoxuan AU - Chen X AD - College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China; Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan, 430070, China. Electronic address: chenxx@mail.hzau.edu.cn. LA - eng PT - Journal Article DEP - 20200420 PL - England TA - Fish Shellfish Immunol JT - Fish & shellfish immunology JID - 9505220 RN - 0 (B7 Antigens) RN - 0 (Fish Proteins) RN - 0 (Receptors, CCR7) SB - IM MH - Aeromonas hydrophila/physiology MH - Amino Acid Sequence MH - Animals MH - B7 Antigens/chemistry/genetics/immunology MH - Base Sequence MH - Catfishes MH - Edwardsiella ictaluri/physiology MH - Enterobacteriaceae Infections/immunology/veterinary 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/*genetics MH - Perciformes/*genetics/*immunology MH - Phylogeny MH - Receptors, CCR7/chemistry/genetics/immunology MH - Sequence Alignment/veterinary OTO - NOTNLM OT - Aeromonas hydrophila OT - CCR7 OT - CD80/86 OT - CD83 OT - Edwardsiella ictaluri OT - Pelteobagrus fulvidraco EDAT- 2020/04/24 06:00 MHDA- 2021/01/16 06:00 CRDT- 2020/04/24 06:00 PHST- 2019/10/26 00:00 [received] PHST- 2020/03/25 00:00 [revised] PHST- 2020/04/13 00:00 [accepted] PHST- 2020/04/24 06:00 [pubmed] PHST- 2021/01/16 06:00 [medline] PHST- 2020/04/24 06:00 [entrez] AID - S1050-4648(20)30272-2 [pii] AID - 10.1016/j.fsi.2020.04.026 [doi] PST - ppublish SO - Fish Shellfish Immunol. 2020 Jul;102:228-242. doi: 10.1016/j.fsi.2020.04.026. Epub 2020 Apr 20.