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Xie W, Zhou QJ, Xu YX, Zhang M, Zhong SP, Lu LL, Qiu HT. Transcriptome analysis reveals potential key immune genes of Hong Kong oyster (Crassostrea hongkongensis) against Vibrio parahaemolyticus infection. FISH & SHELLFISH IMMUNOLOGY 2022; 122:316-324. [PMID: 35122949 DOI: 10.1016/j.fsi.2022.02.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 01/23/2022] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Abstract
Hong Kong oyster (Crassostrea hongkongensis) is one of the main species of economic shellfish cultivated in the coastal areas of southern China. The cultivation of this shellfish may be adversely impacted by Vibrio parahaemolyticus, a harmful pathogenic bacterium for many mariculture species, as it usually exists on the surface of Hong Kong oysters. Although previous studies have discovered that oysters rely on non-specific immune system to fight pathogen invasion, the genes corresponding to the complex immune system against Vibrio is still not fully elucidated. Therefore, we conducted a transcriptome analysis on the gill from Hong Kong oysters at two time points (i.e., 12 h and 24 h after V. parahaemolyticus or PBS challenge) to identify potential immune genes against V. parahaemolyticus infection. A total of 61779 unigenes with the average length of 1221 bp were obtained, and the annotation information of 39917 unigenes were obtained from Nr, SwissProt, KEGG and COG/KOG. After a pairwise comparison between V. parahaemolyticus or PBS challenge at the two time points, three groups of differentially expressed genes induced by V. parahaemolyticus were captured and analyzed. GO and KEGG analyses showed that multiple immune-related genes played an important role in pathogen infection, including HSP70, PCDP3 and TLR4. Furthermore, genes annotation indicated that LITAF, TNFSF10, Duox2 and big defensin family are also involved in immune regulation. Our study provides a reference for further exploration the molecular mechanism that defenses the pathogen infection regarding the identified immune-related genes in Hong Kong oysters.
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Affiliation(s)
- Wei Xie
- Institute of Biomedical Sciences, Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, College of Life Sciences, Shandong Normal University, Jinan, 250014, China
| | - Qi-Jia Zhou
- Key Laboratory of Environment Change and Resources Use in Beibu Gulf (Nanning Normal University), Ministry of Education, Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation (Nanning Normal University), Nanning, 530001, China.
| | - Yi-Xiao Xu
- Key Laboratory of Environment Change and Resources Use in Beibu Gulf (Nanning Normal University), Ministry of Education, Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation (Nanning Normal University), Nanning, 530001, China
| | - Man Zhang
- School of Marine Sciences, Guangxi University, Nanning, 530001, China
| | - Sheng-Ping Zhong
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, 530200, China.
| | - Li-Li Lu
- Guangxi Zhuang Autonomous Region Institute of Product Quality Inspection, Nanning, 530001, China
| | - Heng-Tong Qiu
- Key Laboratory of Environment Change and Resources Use in Beibu Gulf (Nanning Normal University), Ministry of Education, Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation (Nanning Normal University), Nanning, 530001, China
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Fu YW, Chen WF, He MH, Tang L, Guo SQ, Zhang QZ. An integrin alpha 4 (ChIntα 4) from oyster Crassostrea hongkongensis mediates the hemocytes phagocytosis towards Vibrio alginolyticus. FISH & SHELLFISH IMMUNOLOGY 2022; 122:246-256. [PMID: 35151833 DOI: 10.1016/j.fsi.2022.02.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 01/14/2022] [Accepted: 02/08/2022] [Indexed: 06/14/2023]
Abstract
Integrins, a family of cell adhesion transmembrane receptors, mediate cell adhesion, migration, proliferation, apoptosis, and phagocytosis. In the present study, an integrin ChIntα 4 from Crassostrea hongkongensis was characterized to investigate its role in defensing against pathogenic bacterium Vibrio alginolyticus. The full-length cDNA sequence of ChIntα 4 was 3572 bp with an open reading frame (ORF) of 3168 bp, which encoded a polypeptide with 1055 amino acids. The mRNA expression of ChIntα 4 in the hemocytes was significantly up-regulated at 6 h and 24 h post V. alginolyticus stimulation (p < 0.01). The recombinant ChIntα 4 protein could agglutinate the rabbit red blood cells and Gram-negative bacteria V. alginolyticus and Escherichia coli. Moreover, the phagocytic activity of the hemocytes was significantly down-regulated from 46.9% to 32.7% when blocked with anti-ChIntα 4 antibody, and it was significantly up-regulated from 42.7% to 59.5% post transfection with pCI-neo-ChIntα 4 plasmid (p < 0.05). In conclusion, these findings demonstrated that ChIntα 4 might be involved in resisting V. alginolyticus infection and regulating phagocytosis as a cell adhesion receptor in C. hongkongensis.
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Affiliation(s)
- Yao-Wu Fu
- Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering Ministry of Education, Key Laboratory of Aquatic Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Institute of Hydrobiology, Jinan University, Guangzhou, China
| | - Wei-Feng Chen
- Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering Ministry of Education, Key Laboratory of Aquatic Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Institute of Hydrobiology, Jinan University, Guangzhou, China
| | - Meng-Han He
- Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering Ministry of Education, Key Laboratory of Aquatic Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Institute of Hydrobiology, Jinan University, Guangzhou, China
| | - Lei Tang
- Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering Ministry of Education, Key Laboratory of Aquatic Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Institute of Hydrobiology, Jinan University, Guangzhou, China
| | - Shu-Quan Guo
- Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering Ministry of Education, Key Laboratory of Aquatic Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Institute of Hydrobiology, Jinan University, Guangzhou, China
| | - Qi-Zhong Zhang
- Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering Ministry of Education, Key Laboratory of Aquatic Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Institute of Hydrobiology, Jinan University, Guangzhou, China.
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The transcriptional factor GATA-4 negatively regulates Hsp70 transcription in Crassostrea hongkongensis. Mol Biol Rep 2020; 47:7107-7114. [PMID: 32880831 DOI: 10.1007/s11033-020-05778-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 08/28/2020] [Indexed: 10/23/2022]
Abstract
To better explore the application potential of heat shock protein Hsp70s in diverse areas including biomonitoring, a further investigation of the details of the regulatory mechanism governing Hsp70 transcription is required. A transcriptional factor ChGATA-4 that displayed affinity to the ChHsp70 promoter of Crassostrea hongkongensis was isolated and identified by DNA affinity purification as well as mass spectrometry analysis. The ChGATA-4 cDNA is 2162 bp in length and the open reading frame encodes a polypeptide containing 482 amino acids with a conserved zinc finger domain. The over-expression of ChGATA-4 significantly inhibited the expression of ChHsp70 promoter in heterologous HEK293T cells. However, the depletion of ChGATA-4 mRNA by RNAi technique resulted in significant increase of ChHsp70 transcription in oyster hemocytes. The RT-PCR results demonstrated that the transcription of both ChHsp70 and ChGATA-4 were induced by heat, Cd, or NP (Nonyl phenol) stress. This suggested a potential correlation between ChHsp70 and ChGATA-4 in the stress-mediated genetic regulatory cascade. This study demonstrated that ChGATA-4 acts in a negative manner in controlling ChHsp70 transcription in C. hongkongensis and promotes to further understand the mechanisms leading Hsp70 transcription.
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Cloning and characterization of a heat shock protein 70 gene from the yellowstripe goby, Mugilogobius chulae : Evidence for its significance in biomonitoring of environmental pollution. GENE REPORTS 2018. [DOI: 10.1016/j.genrep.2018.03.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Zhang L, Xu D, Cui M, Tang L, Hou T, Zhang Q. The guanine nucleotide-binding protein α subunit protein ChGnaq positively regulates Hsc70 transcription in Crassostrea hongkongensis. Biochem Biophys Res Commun 2018; 499:215-220. [DOI: 10.1016/j.bbrc.2018.03.130] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 03/16/2018] [Indexed: 10/17/2022]
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The transcriptional factor YB-1 positively regulates Hsc70 transcription in Crassostrea hongkongensis. Biochem Biophys Res Commun 2018; 495:2404-2409. [DOI: 10.1016/j.bbrc.2017.12.110] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 12/19/2017] [Indexed: 11/15/2022]
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Xu D, Wang D, Cui M, Zhang Q. The purine-rich element-binding protein ChPur-α negatively regulates Hsc70 transcription in Crassostrea hongkongensis. Cell Stress Chaperones 2018; 23:91-100. [PMID: 28702780 PMCID: PMC5741584 DOI: 10.1007/s12192-017-0826-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Revised: 06/17/2017] [Accepted: 06/19/2017] [Indexed: 01/20/2023] Open
Abstract
ChPur-α, a purine-rich element-binding protein, was discovered showing affinity to the ChHsc70 promoter in Crassostrea hongkongensis by DNA affinity purification and mass spectrometry analysis. Direct interaction between purified ChPur-α and the ChHsc70 promoter region was demonstrated by electrophoretic mobility shift assay in vitro. ChPur-α reduction led to clear enhancements of ChHsc70 transcription in the hemocytes of C. hongkongensis. Consistently, ChPur-α overexpression in heterologous HEK293T cells correlated with repressive phenotype in ChHsc70 promoter expression. ChHsc70 transcription was responsive to heat shock or CdCl2 stress by RT-PCR, signifying an inducible feature of ChHsc70 transcription by physical/chemical stress despite its constitutive nature. ChPur-α transcription was also induced by the two stressors. This indicates a plausible association between ChHsc70 and ChPur-α in the stress-induced genetic regulatory pathway. This study discovered a negatively regulatory role of ChPur-α in controlling ChHsc70 transcription in C. hongkongensis, and contributed to better understanding the regulatory mechanisms in control of Hsc70 transcription.
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Affiliation(s)
- Delin Xu
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou, 510632, People's Republic of China
| | - Di Wang
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou, 510632, People's Republic of China
| | - Miao Cui
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou, 510632, People's Republic of China
| | - Qizhong Zhang
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou, 510632, People's Republic of China.
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Xu D, Yang Q, Cui M, Zhang Q. The novel transcriptional factor HP1BP3 negatively regulates Hsp70 transcription in Crassostrea hongkongensis. Sci Rep 2017; 7:1401. [PMID: 28469151 PMCID: PMC5431216 DOI: 10.1038/s41598-017-01573-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 03/29/2017] [Indexed: 11/29/2022] Open
Abstract
ChHP1BP3, a chromatin complex-related protein known with dynamic features, was identified as a ChHsp70 promoter-associated factor in Crassostrea hongkongensis by DNA-affinity purification and mass spectrometry analysis. Direct interaction between purified ChHP1BP3 and the ChHsp70 promoter region was demonstrated using EMSA. ChHp1bp3 depletion led to clear enhancements in ChHsp70 mRNA expression in C. hongkongensis hemocytes. However, ChHp1bp3 overexpression in heterologous HEK293T cells correlated with fluctuations in ChHsp70 transcription. Quantitative RT-PCR analysis showed that both ChHsp70 and ChHp1bp3 transcription were responsive to external physical/chemical stresses by heat, CdCl2 and NP. This indicated a plausible correlation between ChHsp70 and ChHp1bp3 in the stress-induced genetic regulatory pathway. While, the distinctive ChHp1bp3 expression patterns upon physical and chemical stresses suggest that the mechanisms that mediate ChHp1bp3 induction might be stress-specific. This study discovered a novel role for HP1BP3 as a negative regulator in controlling Hsp70 transcription in C. hongkongensis, and contributed to better understanding the complex regulatory mechanisms governing Hsp70 transcription.
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Affiliation(s)
- Delin Xu
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou, 510632, P.R. China
| | - Qin Yang
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou, 510632, P.R. China
| | - Miao Cui
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou, 510632, P.R. China.
| | - Qizhong Zhang
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou, 510632, P.R. China.
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