Molecular cloning of complement component C3 gene from pearl mussel, Hyriopsis cumingii and analysis of the gene expression in response to tissue transplantation. Issue 94 (November 2019)

• Record Type: Journal Article
• Authors: Wang, Ning; Qin, Mengting; Chen, Xihua; Lu, Yang; Zhao, Xinxin; Wu, Yuhui; Shi, Jie; Li, Yitian; Zhang, Rui
• Is Part Of: Fish & shellfish immunology. Issue 94(2019)
• Page Start: 288
• Page End: 293
• Publication Date: 2019-11
• Subjects: Complement component C3 -- Hyriopsis cumingii -- Mantle allograft -- Pearl aquaculture; Fishes -- Immunology -- Periodicals; Shellfish -- Immunology -- Periodicals; Poissons -- Immunologie -- Périodiques; Crustacés -- Immunologie -- Périodiques; 571.9617
• DOI: 10.1016/j.fsi.2019.09.010
• Languages: English
• ISSNs: 1050-4648

Abstract

Abstract: Complement component C3 is well recognized as the central mediator of complement system, whose activation is responsible for the immune surveillance and elimination of non-self-antigens. In this study, C3 gene (HcC3) from a pearl making mussel, Hyriopsis cumingii, was successfully identified. The putative HcC3 possessed the canonical domains and highly conserved functional residues of C3 family members. In phylogenetic analysis, HcC3 was also clustered into C3 subfamily and separated from α2 macroglobulin clade. HcC3 gene was constitutively expressed in a wide range of tissues of pearl mussels, among which the immune-related tissues like hemocytes got highest expression. After allograft surgery of mantle tissues for aquaculture pearl production, the gene expression of HcC3 exhibited a rapid upregulation on day 1, dropped back on day 3, peaked the value on day 7, and restored to the level similar to control samples on day 14 after mantle allograft. The biphasic expression within the two weeks post the surgery suggests the important roles for HcC3 in alloimmune responses and an intricate complement activation mechanism in mollusks during tissue allograft. Highlights: HcC3 was characterized as a typical member of C3 family with all the canonical features. Phylogenetic analysis proved the gene divergence between C3 gene and A2M gene in pearl mussels. Mantle allograft induced a rapid activation of C3. HcC3 gene was in a biphasic expression in response to mantle transplantation.