Pathogenic infection and immune-related gene expression of Chinese sturgeon (Acipenser sinensis) challenged by Citrobacter freundii. (January 2021)

• Record Type: Journal Article
• Authors: Yang, Jing; Tian, Tian; Xiao, Kan; Zeng, Qingkai; Tan, Chun; Du, Hejun
• Is Part Of: Developmental and comparative immunology. Volume 114(2021)
• Publication Date: 2021-01
• Subjects: Pathogenic infection -- Gene expression -- Chinese sturgeon -- Citrobacter freundii; Immunology -- Periodicals; Developmental immunology -- Periodicals; 616.079
• DOI: 10.1016/j.dci.2020.103872
• Languages: English
• ISSNs: 0145-305X

Abstract

Abstract: Citrobacter freundii is one of the important bacterial diseases responsible for disease outbreaks to wild and cultured fishes globally. However, no known empirical research has focused on exploring relationships between immune response after C. freundii infection in sturgeons. In this study, C. freundii was isolated and identified from artificially breeding Chinese sturgeon, and global measurement of transcriptome response to C. freundii infection in head-kidney and spleen of A. sinensis were conducted to the acknowledgement of the potential mechanisms of pathogen-host interaction triggered by the bacterial infection. In total, differentially expressed genes which significantly associated with immune responses were found to be participated in antigen processing and presentation (MHC I, MHC II, HspA1, Hsp90A, Hsp70, CTSL, and CTSE), and acute phase response (serotransferrin and CP), as well as changing of other immune-related cytokine, such as chemokine and interferon, which proving their reacting and regulatory role during the response of thehost against C. freundii infection in fish. C. freundii can cause serious disease in sturgeon species was first reported in this study, and innate immune responses to C. freundii infection in this study will be conducive to understand the defense mechanisms and making appropriate prevention strategies in A. sinensis aquaculture operations. Highlights: Citrobacter freundii was isolated for the first time from Chinese sturgeon ( Acipenser sinensis ). Transcriptome sequencing was performed to explore the alteration in immune response following bacterial infection. DEGs profiles provides insights for understanding of host defense mechanisms against C. freundii infection.