Exploration of the immune response of grass carp (Ctenopharyngodon idellus) erythrocytes during bacterial infection
文献类型： 外文期刊
作者： Yang, Shiyi 1 ; Bai, Yanhan 1 ; Tao, Junjie 1 ; Tu, Chengming 1 ; Chen, Bing 2 ; Huang, Xiaoman 1 ; Zhang, Linpeng 1 ; Liu, Lihan 1 ; Li, Lin 1 ; Qin, Zhendong 1 ;
作者机构： 1.Zhongkai Univ Agr & Engn, Coll Anim Sci & Technol, Guangdong Prov Water Environm & Aquat Prod Secur E, Guangzhou Key Lab Aquat Anim Dis & Waterfowl Breed, Guangzhou 510222, Guangdong, Peoples R China
2.Guangdong Acad Agr Sci, Inst Anim Sci, Lab Anim Nutr & Feed Sci South China, Guangdong Key Lab Anim Breeding & Nutr,Minist Agr, Guangzhou 510640, Peoples R China
关键词： GcRBCs; Inflammation; ROS; Antioxidant system; Apoptosis
期刊名称：FISH & SHELLFISH IMMUNOLOGY （ 影响因子：4.7； 五年影响因子：4.7 ）
ISSN： 1050-4648
年卷期： 2024 年 149 卷
页码：
收录情况： SCI
摘要： In teleost blood, red blood cells (RBCs) are the most common type of cell, and they differ from mammalian RBCs in having a nucleus and other organelles. As nucleated cells, teleost RBCs contribute to the immune response against pathogens, but their antibacterial mechanism remains unclear. Here, we utilized RNA-Seq to analyze gene expression patterns of grass carp (Ctenopharyngodon idellus) RBCs (GcRBCs) stimulated by Aeromonas hydrophila, Escherichia coli, and Staphylococcus aureus. Our transcriptomic data showed that bacterial stimulation generated many differentially expressed genes (DEGs). Furthermore, several inflammatory pathways responded to bacterial activation, and the TLR, IL-17, and tumor necrosis factor (TNF) signaling pathways were significantly activated based on Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis. Furthermore, the findings of qRT-PCR showed markedly elevated expression of various cytokines, including IL-1 beta, IL4, IL6, IL8, IL12, and TNF alpha, in GcRBCs after incubation with bacteria. Reactive oxygen species (ROS) production in GcRBCs was markedly increased after the cells were stimulated with the three bacteria, and the expression of superoxide dismutase, glutathione peroxidase, and antioxidant enzymes, including catalase, was altered. Flow cytometry analysis showed that the apoptosis rate of GcRBCs was enhanced after stimulation with the three bacteria for different times. In summary, our findings reveal that bacterial stimulation activates the immune response of GcRBCs by regulating ROS release, cytokine expression, and the antioxidant system, leading to apoptosis of GcRBCs.
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