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Characterization of two thymosins as immune-related genes in common carp (Cyprinus carpio L.)
- Xiao, Zhangang, Shen, Jing, Feng, Hong, Liu, Hong, Wang, Yaping, Huang, Rong, Guo, Qionglin
- Developmental and comparative immunology 2015 v.50 no.1 pp. 29-37
- Cyprinus carpio, Danio rerio, Spring viraemia of carp virus, T-lymphocytes, carp, complementary DNA, early development, gene expression regulation, gene overexpression, genes, immune response, messenger RNA, peptides, proteins, thymosin
- Prothymosin alpha (ProTα) and thymosin beta (Tβ) belong to thymosin family, which consists of a series of highly conserved peptides involved in stimulating immune responses. ProTα b and Tβ are still poorly studied in teleost. Here, the full-length cDNAs of ProTα b and Tβ-like (Tβ-l) were cloned and identified in common carp (Cyprinus carpio L.). The expressions of carp ProTα b and Tβ-l exhibited rise-fall pattern and then trended to be stable during early development. After spring viraemia of carp virus (SVCV) infection, the carp ProTα b and Tβ-l transcripts were significantly up-regulated in some immune-related organs. When transiently over-expressed carp ProTα b and Tβ-l in zebrafish, these two proteins up-regulated the expressions of T lymphocytes-related genes (Rag 1, TCR-γ, CD4 and CD8α). These results suggest that carp ProTα b and Tβ may ultimately enhance the immune response during viral infection and modulate the development of T lymphocytes in teleost.