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Lin S, Wang K, Yang B, Li B, Shen X, Du Z. Dopamine receptor (DAR) and dopa decarboxylase (DDC) mediate hepatopancreas antibacterial innate immune reactions in Procambarus clarkii. Int J Biol Macromol 2022; 214:140-151. [DOI: 10.1016/j.ijbiomac.2022.05.200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 05/21/2022] [Accepted: 05/31/2022] [Indexed: 11/17/2022]
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Yang B, Lin S, Li B, Wei Z, Li Q, Shen X, Du Z. Interleukin enhancer binding factor 2 (IEBF 2) was involved in the regulation of the antibacterial immune reactions in fresh water crayfish, Procambarus clarkii. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2022; 126:104226. [PMID: 34348114 DOI: 10.1016/j.dci.2021.104226] [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: 04/19/2021] [Revised: 07/29/2021] [Accepted: 07/31/2021] [Indexed: 06/13/2023]
Abstract
Although interleukin and interleukin analogues which play important immunomodulatory roles in mammals have not yet been reported in invertebrates, interleukin enhancer binding factor (IEBF) which acts as a transcription factor has been recently studied in several crustaceans and it may be involved in innate immune defence against pathogens. In this study, an IEBF 2 homologue was identified in the fresh water crayfish, Procambarus clarkii. The significantly changed expression levels of Pc-iebf 2 after bacterial challenge revealed the possibility of its participation in defence against bacterial infection. The results of an RNAi assay showed that the crayfish survival rate was obviously decreased after dsIEBF 2 injection, compared with the control groups. And S. aureus proliferation was obviously enhanced at 24 and 48 h post bacterial injection, when Pc-iebf 2 was knocked down. The possible molecular mechanisms for the innate immune regulation functions of Pc-IEBF 2 were also investigated. We speculated that Pc-IEBF 2 plays an important role in defending against bacterial infection in crayfish. It could regulate some innate immune responses by affecting the Toll signalling pathway, melanisation, and cell apoptosis.
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Affiliation(s)
- Bingbing Yang
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China.
| | - Sihan Lin
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China.
| | - Bo Li
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China.
| | - Zhe Wei
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China.
| | - Qianqian Li
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China.
| | - Xiuli Shen
- Library, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China.
| | - Zhiqiang Du
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China.
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Wei C, Pan L, Zhang X, Tong R. Comparative transcriptome analysis of eyestalk from the white shrimp Litopenaeus vannamei after the injection of dopamine. Gene 2020; 763:145115. [DOI: 10.1016/j.gene.2020.145115] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 08/01/2020] [Accepted: 08/28/2020] [Indexed: 01/12/2023]
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Li B, Yang BB, Shen XL, Wang K, Wei Z, Du ZQ. Molecular characterization and expression analysis of tumor necrosis factor receptor-associated factor 6 (traf6) like gene involved in antibacterial innate immune of fresh water crayfish, Procambarus clarkii. FISH & SHELLFISH IMMUNOLOGY 2020; 104:517-526. [PMID: 32589929 DOI: 10.1016/j.fsi.2020.06.027] [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: 02/25/2020] [Revised: 06/06/2020] [Accepted: 06/12/2020] [Indexed: 06/11/2023]
Abstract
In invertebrates, innate immunity was the crucial defending pattern against pathogenic microorganisms. For the past few years, Toll or Toll like receptors (TLRs) signaling pathway was studied extensively in crustaceans. Among the components of Toll or Toll like receptors (TLRs) signaling pathway, tumor necrosis factor receptor-associated factor 6 (TRAF6) acted as an important cytoplasmic adaptor, which was conserved from Drosophila to human. In this study, a new traf6 like gene was cloned from hepatopancreas of P. clarkii. After challenged respectively by S. aureus or E. ictaluri, the expression profiles were studied. And the results showed that the mRNA transcript of Pc-traf6 like gene was up-regulated significantly in the hemocytes, hepatopancreas, gills, and intestine of crayfish. After Pc-traf6 like gene was knocked down, the expression levels of transcription factor (Dorsal) and some crucial immunity effectors (ALF 3, Lysozyme 1, Lectin 1, and Crustin 2) in TLRs signaling pathway were dramatically suppressed. Simultaneously, the survival rate of crayfish challenged respectively by S. aureus or E. ictaluri was significantly decreased in RNAi assay. All these results indicated that Pc-traf6 like gene played an important role in regulating the expression of downstream effectors in the TLRs signaling pathway of crayfish.
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Affiliation(s)
- Bo Li
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China
| | - Bing-Bing Yang
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China
| | - Xiu-Li Shen
- Library, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China
| | - Kai Wang
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China
| | - Zhe Wei
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China
| | - Zhi-Qiang Du
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China.
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Lin HY, Kuo HW, Song YL, Cheng W. Cloning and characterization of DOPA decarboxylase in Litopenaeus vannamei and its roles in catecholamine biosynthesis, immunocompetence, and antibacterial defense by dsRNA-mediated gene silencing. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 108:103668. [PMID: 32145295 DOI: 10.1016/j.dci.2020.103668] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 02/28/2020] [Accepted: 02/29/2020] [Indexed: 06/10/2023]
Abstract
Catecholamines (CAs) play critical roles in regulating physiological and immunological homeostasis in invertebrates and vertebrates under stressful environments. DOPA decarboxylase (DDC), an enzyme responsible for the decarboxylation step of dopamine synthesis, participates in neurotransmitter metabolism and innate immunity. In shrimp, two genes encoding CA-related enzymes, tyrosine hydroxylase and dopamine beta-hydroxylase, were further identified and characterized as neuroendocrine-immune regulators. In this study, full-length complementary DNA of DDC cloned from the thoracic ganglia of shrimp, Litopenaeus vannamei, (LvDDC) was predicted to encode a 452-amino acid protein with a pyridoxal-dependent decarboxylase-conserved domain, and this deduced protein of LvDDC was phylogenetically closely related to insect DDC. LvDDC messenger RNA expression was analyzed by a semiquantitative RT-PCR and a real-time quantitative RT-PCR and found to be abundant in the hepatopancreas and nervous system but at low levels in haemocytes, heart, stomach, and gills. To determine the role of LvDDC, double-stranded (ds)RNA was used for in vivo assessments. LvDDC-depleted shrimp revealed significant increases in the total haemocyte count, hyaline cells, granular cells, phenoloxidase activity, and respiratory bursts of haemocytes per unit of haemolymph, and phagocytic activity and clearance efficiency toward Vibrio alginolyticus. Further, decreased LvDDC mRNA expression was accompanied by decreases in dopamine, glucose, and lactate levels in haemolymph. In shrimp that received LvDDC-dsRNA for 3 days and were then challenged with V. alginolyticus, the survival rate of LvDDC-depleted shrimp was significantly higher than that of shrimp that received diethyl pyrocarbonate-water or non-targeted dsRNA. In conclusion, the cloned LvDDC was responsible for controlling dopamine synthesis, which then regulated physiological and immune responses in L. vannamei.
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Affiliation(s)
- Hsin-Yun Lin
- Department of Life Science, National Taiwan University, Taipei, 106, Taiwan, ROC
| | - Hsin-Wei Kuo
- Department of Aquaculture, National Pingtung University of Science and Technology, Pingtung, 912, Taiwan, ROC
| | - Yen-Ling Song
- Department of Life Science, National Taiwan University, Taipei, 106, Taiwan, ROC
| | - Winton Cheng
- Department of Aquaculture, National Pingtung University of Science and Technology, Pingtung, 912, Taiwan, ROC.
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Du ZQ, Li B, Shen XL, Wang K, Du J, Yu XD, Yuan JJ. A new antimicrobial peptide isoform, Pc-crustin 4 involved in antibacterial innate immune response in fresh water crayfish, Procambarus clarkii. FISH & SHELLFISH IMMUNOLOGY 2019; 94:861-870. [PMID: 31585246 DOI: 10.1016/j.fsi.2019.10.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 09/16/2019] [Accepted: 10/01/2019] [Indexed: 06/10/2023]
Abstract
The main advantage of antimicrobial peptides (AMPs) used as the effectors in the innate immunity system of invertebrates is that the high specificity is not indispensable. And they play important roles in the systemic defenses against microbial invasion. In this study, a new full-length cDNA of the crustins molecule was identified in red swamp crayfish, P. clarkii (named Pc-crustin 4). The ORF of Pc-crustin 4 contained 369 bp which encoded a protein of 122 amino acids, with a 20-amino-acid signal peptide sequence. On the base of the classification method established by Smith et al., Pc-crustin 4 belonged to Type Ⅰ crustin molecule. The Pc-crustin 4 transcripts were expressed in hemocytes at relatively high level, and relatively low level in hepatopancreas, gills, and intestine in normal crayfish. After respectively challenged with S. aureus or E. ictaluri, the expression levels of Pc-crustin 4 showed up-regulation trends at different degrees in the hemocytes, hepatopancreas, gills, and intestine tissues. Besides, the results of liquid antibacterial assay showed that rPc-crustin 4 inhibited obviously the growth of S. aureus and E. ictaluri. The results of bacteria binding assay showed that rPc-crustin 4 could bind strongly to S. aureus and E. ictaluri. Finally, RNAi assay was performed to study the immunity roles of Pc-crustin 4 in crayfish in vivo. Taken together, Pc-crustin 4 is an important immunity effector molecule, which plays crucial roles in defending against bacterial infection in crayfish.
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Affiliation(s)
- Zhi-Qiang Du
- Key Laboratory of Inshore Resources Biotechnology (Quanzhou Normal University) Fujian Province University, Quanzhou, 362000, China; School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia Autonomous Region, 014010, China
| | - Bo Li
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia Autonomous Region, 014010, China
| | - Xiu-Li Shen
- Library, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia Autonomous Region, 014010, China
| | - Kai Wang
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia Autonomous Region, 014010, China
| | - Jie Du
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia Autonomous Region, 014010, China
| | - Xiao-Dong Yu
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia Autonomous Region, 014010, China
| | - Jian-Jun Yuan
- Key Laboratory of Inshore Resources Biotechnology (Quanzhou Normal University) Fujian Province University, Quanzhou, 362000, China; College of Marine and Food Sciences, Quanzhou Normal University, Quanzhou, 362000, China.
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