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Liu H, Tan S, Han S, Liu X, Li Z, Wang N, Wu Z, Ma J, Shi K, Wang W, Sha Z. Effects of miR-722 on gene expression and alternative splicing in the liver of half-smooth tongue sole after infection with Vibrio anguillarum. FISH & SHELLFISH IMMUNOLOGY 2024; 144:109275. [PMID: 38081443 DOI: 10.1016/j.fsi.2023.109275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/22/2023] [Accepted: 12/04/2023] [Indexed: 12/31/2023]
Abstract
MicroRNAs play crucial roles in various biological processes, including but not limited to differentiation, development, disease, and immunity. However, their immunoregulatory roles in half-smooth tongue sole are lacking. Our previous studies indicated that miR-722 could target C5aR1 to modulate the complement pathway to alleviate inflammatory response and even affect the mortality after the bacterial infection with Vibrio anguillarum. Driven by the purpose of revealing the underlying mechanisms, in this study, we investigated the effects of miR-722 on the gene expression and alternative splicing (AS) in the liver of half-smooth tongue sole after Vibrio anguillarum infection, with the approach of miR-722 overexpression/silencing and subsequent RNA-seq. Among the different comparisons, the I group (miR-722 inhibitor and V. anguillarum) versus blank control (PBS) exhibited the highest number of differentially expressed genes (DEGs), suggesting that the immune response was overactivated after inhibiting the miR-722. In addition, enrichment analyses were performed to reveal the functions of DEGs and differential AS (DAS) genes, reflecting the enrichment of RNA splicing and immune-related pathways including NF-κB and T cell receptor signaling pathway. Comparing the M group (miR-722 mimic and V. anguillarum) with the negative control (random sequence and V. anguillarum), two immune-related genes, cd48 and mapk8, were differentially expressed, of which mapk8 was also differentially spliced, indicating their importance in the immune response. Furthermore, representative gene analysis was performed, suggesting their corresponding functional changes due to AS. To verify the RNA-seq data, quantitative real-time PCR was employed with twenty pairs of primers for DEGs and DAS events. Overall, our results demonstrated that miR-722 could mediate the transcriptome-wide changes of gene expression and AS in half-smooth tongue sole, and provided insights into the regulatory role of miR-722 in immune responses, laying the foundation for further functional analyses and practical applications in aquaculture.
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Affiliation(s)
- Hongning Liu
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Suxu Tan
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Sen Han
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Xinbao Liu
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Zhujun Li
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Ningning Wang
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China; College of Basic Medicine, Qingdao University, Qingdao, 266071, China
| | - Zhendong Wu
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Jie Ma
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Kunpeng Shi
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Wenwen Wang
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Zhenxia Sha
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China.
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Basak C, Chakraborty R. Gut-immunity modulation in Lepidocephalichthys guntea during Aeromonas hydrophila-infection and recovery assessed with transcriptome data. Heliyon 2023; 9:e22936. [PMID: 38130423 PMCID: PMC10735050 DOI: 10.1016/j.heliyon.2023.e22936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 11/20/2023] [Accepted: 11/22/2023] [Indexed: 12/23/2023] Open
Abstract
The fish immune system, which consists of innate and adaptive immunologic processes, defends against viruses, bacteria, fungi, and parasites. The gut immunity is an integral part of the host immune system that controls immunological homeostasis, hosts' interactions with their microbiomes, and provides defence against a number of intestinal infections. Lepidocephalichthys guntea, a facultative air-breathing fish, was experimentally infected with Aeromonas hydrophila using intraperitoneal injection followed by bath challenge, and transcriptome data were used to examine the gut immune responses during disease progression and recovery from the diseased state without the use of medication. For the control or uninfected fish (FGC) and the infected fish that were kept for seven days (FGE1) and fifteen days (FGE2), separate water tanks were set up. Coding DNA sequences (CDS) for FGC and FGE1, FGC and FGE2, and FGE1 and FGE2 were analyzed for differential gene expression (DGE). The presence and expression of genes involved in the T cell receptor (TCR) signalling pathway, natural killer (NK) cell-mediated cytotoxicity pathway, and complement-mediated pathway, along with a large number of other immune-related proteins, and heat shock protein (HSPs) under various experimental conditions and its relationship to immune modulation of the fish gut was the primary focus of this study. Significant up-and-down regulation of these pathways shows that, in FGE1, the fish's innate immune system was engaged, whereas in FGE2, the majority of innate immune mechanisms were repressed, and adaptive immunity was activated. Expression of genes related to the immune system and heat-shock proteins was induced during this host's immunological response, and this information was then used to build a thorough network relating to immunity and the heat-shock response. This is the first study to examine the relationship between pathogenic bacterial infection, disease reversal, and modification of innate and adaptive immunity as well as heat shock response.
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Affiliation(s)
- Chandana Basak
- OMICS Laboratory, Department of Biotechnology, University of North Bengal, Siliguri-734013, West Bengal, India
| | - Ranadhir Chakraborty
- OMICS Laboratory, Department of Biotechnology, University of North Bengal, Siliguri-734013, West Bengal, India
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Wu F, Wang Z, Yang G, Jian J, Lu Y. Molecular characterization and expression analysis of interleukin-15 (IL-15) genes in orange-spotted grouper (Epinephelus coioides) in response to Vibrio harveyi challenge. FISH & SHELLFISH IMMUNOLOGY 2022; 128:327-334. [PMID: 35940540 DOI: 10.1016/j.fsi.2022.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 07/24/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
As a member of the γc family, interleukin 15 plays an important function in the immune response. In this study, we cloned an IL15 from Epinephelus coioides (named Ec-IL15). The open reading frame of Ec-IL15 is 528 bp, encoding 175 amino acids. Sequence alignment analysis showed that EcIL-15 has a conserved Pfam: IL15 domain and four cysteine residues. Subcellular localization studies have shown that Ec-IL15 is distributed in whole cells. In healthy groupers, Ec-IL15 was expressed in all 11 tissues tested and the highest in liver. After ConA, PHA, LPS and poly I:C stimulation, Ec-IL15 expression of HKLs was significantly upregulated. After V. harveyi infection, the expression of Ec-IL15 in 9 tissues was significantly upregulated and peaked within 48 h. In addition, recombinant Ec-IL15 protein can not only stimulate HKLs proliferation and cytokine expression, but also has the potential as an immune enhancer.
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Affiliation(s)
- Fan Wu
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518120, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen, 51820, China; College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Aquaic Animal Disease Control and Healthy Culture, Zhanjiang, 524025, China
| | - Zhiwen Wang
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518120, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen, 51820, China; College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Aquaic Animal Disease Control and Healthy Culture, Zhanjiang, 524025, China
| | - Guanjian Yang
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518120, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen, 51820, China; College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Aquaic Animal Disease Control and Healthy Culture, Zhanjiang, 524025, China
| | - Jichang Jian
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Aquaic Animal Disease Control and Healthy Culture, Zhanjiang, 524025, China
| | - Yishan Lu
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518120, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen, 51820, China; College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Aquaic Animal Disease Control and Healthy Culture, Zhanjiang, 524025, China.
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Xie C, Wang Z, Li Y, Wu F, Lu Y, Xia H, Tang J, Jian J, Kwok KW. Conservation of structural and interactional features of CD226 and Necl5 molecules from Nile tilapia (Oreochromis niloticus). FISH & SHELLFISH IMMUNOLOGY 2021; 116:74-83. [PMID: 34033910 DOI: 10.1016/j.fsi.2021.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 05/16/2021] [Accepted: 05/19/2021] [Indexed: 06/12/2023]
Abstract
CD226 interacts with its ligand Necl5 as a costimulatory signal. In this study, we cloned a CD226 from Nile tilapia (Oreochromis niloticus, named OnCD226) and a Necl5 (named OnNecl5). The open reading frame of OnCD226 was 1071 bp, encoding a protein of 356 amino acids. Sequence alignment analysis indicated that OnCD226 contained two Ig-like domains in ectodomain. The open reading frame of OnNecl5 was 1155 bp, encoding a protein of 384 amino acids, and there are three lg-like domains in the extracellular domain. In healthy tilapia, OnCD226 was distributed in all tested tissues and relatively higher in the brain, while OnNecl5 was relatively higher in the skin. After Streptococcus agalactiae infection, OnCD226 has the same up-regulated expression pattern as OnNecl5 in different tissues. After HKLs stimulation with S. agalactiae and Poly I:C, respectively. OnCD226 was significantly up-regulated (0.01 < p < 0.05) at 12 h and extremely significant up-regulation was observed (p < 0.01) at 48 h and 96 h, the peak was observed at 96 h after stimulation by S. agalactiae. After stimulation by Poly I:C, OnCD226 expression was extremely significant (p < 0.01) at 72 h and 96 h, the peak was observed at 96 h. After stimulation by Keyhole limpet hemocyanin (KLH), a classical T cell-dependent antigen, the expression of OnCD226 was significantly up-regulated in blood, head kidney, spleen, and thymus. Moreover, when compared with the first challenge, the gene expression of OnCD226 which response to the second challenge was up-regulated earlier. Subcellular co-localization studies showed that OnCD226 and OnNecl5 were distributed mainly in the cytomembrane. Yeast two-hybrid results, indicated a strong interaction between OnCD226 and OnNecl5. These results suggested that OnCD226 plays an important role during pathogens infection, and the interaction between CD226 and Necl5 is conserved in Nile tilapia.
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Affiliation(s)
- Caixia Xie
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang, 524025, China; Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518120, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen, 51820, China
| | - Zhiwen Wang
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang, 524025, China; Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518120, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen, 51820, China
| | - Yuan Li
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang, 524025, China; Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518120, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen, 51820, China
| | - Fan Wu
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang, 524025, China; Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518120, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen, 51820, China
| | - Yishan Lu
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang, 524025, China; Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518120, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen, 51820, China.
| | - Hongli Xia
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang, 524025, China; Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518120, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen, 51820, China
| | - Jufen Tang
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang, 524025, China
| | - Jichang Jian
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang, 524025, China
| | - Kevin Wh Kwok
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
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