Characterisation of IL-21 and IL-21Rα in grass carp: IL-21-producing cells are upregulated during Flavobacterium columnare infection

Autor: Jiawen Xu, Junya Wang, Qingyu Min, Wei Wang, Yuting Qin, Lina Lei, Qian Gao, Jun Zou
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Aquaculture and Fisheries, Vol 9, Iss 2, Pp 126-135 (2024)
Druh dokumentu: article
ISSN: 2468-550X
DOI: 10.1016/j.aaf.2021.06.002
Popis: Interleukin-21 (IL-21) is produced mainly by activated CD4+ T cells and promotes the proliferation, survival and differentiation of immune cells. This study characterised a high affinity binding receptor of IL-21 (IL-21 Rα) from grass carp (Ctenopharyngodon idella, Ci) and analyzed the expression of CiIL-21 and CiIL-21 Rα. It has been shown that they were modulated by PAMPs and during infection with bacterial and viral pathogens. Recombinant CiIL-21 protein produced in bacteria was active in inducing the expression of genes involved in Th responses. A monoclonal CiIL-21 antibody was generated against the rCiIL-21 and showed good reactive specificity with the rCiIL-21 proteins expressed in E. coli cells, and HEK293 T cells and the native protein from PHA-stimulated kidney leukocytes. In addition, the IL-21-producing cells detected by the CiIL-21 monoclonal antibody were found to be increased to in the kidney, spleen and hindgut after infection with Flavobacterium columnare. Our data indicate that IL-21 is involved in the regulation of immune response to bacterial and viral infection.
Databáze: Directory of Open Access Journals