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Coates LC, Mahoney J, Ramsey JS, Warwick E, Johnson R, MacCoss MJ, Krasnoff SB, Howe KJ, Moulton K, Saha S, Mueller LA, Hall DG, Shatters RG, Heck ML, Slupsky CM. Development on Citrus medica infected with 'Candidatus Liberibacter asiaticus' has sex-specific and -nonspecific impacts on adult Diaphorina citri and its endosymbionts. PLoS One 2020; 15:e0239771. [PMID: 33022020 PMCID: PMC7537882 DOI: 10.1371/journal.pone.0239771] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 09/11/2020] [Indexed: 12/11/2022] Open
Abstract
Huanglongbing (HLB) is a deadly, incurable citrus disease putatively caused by the unculturable bacterium, 'Candidatus Liberibacter asiaticus' (CLas), and transmitted by Diaphorina citri. Prior studies suggest D. citri transmits CLas in a circulative and propagative manner; however, the precise interactions necessary for CLas transmission remain unknown, and the impact of insect sex on D. citri-CLas interactions is poorly understood despite reports of sex-dependent susceptibilities to CLas. We analyzed the transcriptome, proteome, metabolome, and microbiome of male and female adult D. citri reared on healthy or CLas-infected Citrus medica to determine shared and sex-specific responses of D. citri and its endosymbionts to CLas exposure. More sex-specific than shared D. citri responses to CLas were observed, despite there being no difference between males and females in CLas density or relative abundance. CLas exposure altered the abundance of proteins involved in immunity and cellular and oxidative stress in a sex-dependent manner. CLas exposure impacted cuticular proteins and enzymes involved in chitin degradation, as well as energy metabolism and abundance of the endosymbiont 'Candidatus Profftella armatura' in both sexes similarly. Notably, diaphorin, a toxic Profftella-derived metabolite, was more abundant in both sexes with CLas exposure. The responses reported here resulted from a combination of CLas colonization of D. citri as well as the effect of CLas infection on C. medica. Elucidating these impacts on D. citri and their endosymbionts contributes to our understanding of the HLB pathosystem and identifies the responses potentially critical to limiting or promoting CLas acquisition and propagation in both sexes.
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Affiliation(s)
- Laurynne C. Coates
- Department of Food Science and Technology, University of California, Davis, California, United States of America
| | - Jaclyn Mahoney
- Boyce Thompson Institute for Plant Research, Ithaca, New York, United States of America
| | - John S. Ramsey
- Boyce Thompson Institute for Plant Research, Ithaca, New York, United States of America
- Robert W. Holley Center for Agriculture and Health, Emerging Pests and Pathogens Research Unit, USDA Agricultural Research Service, Ithaca, New York, United States of America
| | - EricaRose Warwick
- Plant Pathology, University of Florida Citrus Research and Education Center, Lake Alfred, Florida, United States of America
| | - Richard Johnson
- Department of Genome Sciences, University of Washington, Seattle, Washington, United States of America
| | - Michael J. MacCoss
- Department of Genome Sciences, University of Washington, Seattle, Washington, United States of America
| | - Stuart B. Krasnoff
- Robert W. Holley Center for Agriculture and Health, Emerging Pests and Pathogens Research Unit, USDA Agricultural Research Service, Ithaca, New York, United States of America
| | - Kevin J. Howe
- Robert W. Holley Center for Agriculture and Health, Emerging Pests and Pathogens Research Unit, USDA Agricultural Research Service, Ithaca, New York, United States of America
| | - Kathy Moulton
- U.S. Horticultural Research Laboratory, Unit of Subtropical Insects and Horticulture, USDA Agricultural Research Service, Fort Pierce, Florida, United States of America
| | - Surya Saha
- Boyce Thompson Institute for Plant Research, Ithaca, New York, United States of America
| | - Lukas A. Mueller
- Boyce Thompson Institute for Plant Research, Ithaca, New York, United States of America
| | - David G. Hall
- U.S. Horticultural Research Laboratory, Unit of Subtropical Insects and Horticulture, USDA Agricultural Research Service, Fort Pierce, Florida, United States of America
| | - Robert G. Shatters
- U.S. Horticultural Research Laboratory, Unit of Subtropical Insects and Horticulture, USDA Agricultural Research Service, Fort Pierce, Florida, United States of America
| | - Michelle L. Heck
- Boyce Thompson Institute for Plant Research, Ithaca, New York, United States of America
- Robert W. Holley Center for Agriculture and Health, Emerging Pests and Pathogens Research Unit, USDA Agricultural Research Service, Ithaca, New York, United States of America
- Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, New York, United States of America
| | - Carolyn M. Slupsky
- Department of Food Science and Technology, University of California, Davis, California, United States of America
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Wang J, Huang Y, Xu K, Zhang X, Sun H, Fan L, Yan M. White spot syndrome virus (WSSV) infection impacts intestinal microbiota composition and function in Litopenaeus vannamei. FISH & SHELLFISH IMMUNOLOGY 2019; 84:130-137. [PMID: 30278220 DOI: 10.1016/j.fsi.2018.09.076] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 09/25/2018] [Accepted: 09/28/2018] [Indexed: 06/08/2023]
Abstract
Intestinal microbiota homeostasis is crucial to the health of host. Pathogen invasion results in dynamics of microbiota composition and structure, disrupting their function in maintaining host health. WSSV is the most prevalent viral pathogen and is able to cause extremely high mortality in Litopenaeus vannamei. However, the changes of intestinal microbiota induced by WSSV are yet to be elucidated. In this study, we analyzed and compared the microbiota of healthy and WSSV-challenged shrimp intestines. Though the richness and diversity of microbiota was barely affected by WSSV, the abundance of predominant phyla like Proteobacteria and Fusobacteria were upregulated significantly, while Bacteroidetes and Tenericutes were significantly decreased in WSSV-infected shrimps. At the genus level, significant increase was observed in Photobacterium, Propionigenium and Arcobacter, as well as significant decrease in Candidatus Bacilloplasma and Flavobacterium in WSSV-infected shrimps. Additionally, metagenomic predictions by PICRUSt suggested that the altered microbiota was mainly related to metabolism, human diseases, genetic information processing, environmental information processing and cellular processes. These results suggested that the invasion of WSSV could impact intestinal microbiota composition and function in L. vannamei.
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Affiliation(s)
- Jun Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou, PR China; Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, South China Agricultural University, Guangzhou, PR China
| | - Youjia Huang
- College of Marine Sciences, South China Agricultural University, Guangzhou, PR China; Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, South China Agricultural University, Guangzhou, PR China
| | - Kaihang Xu
- College of Marine Sciences, South China Agricultural University, Guangzhou, PR China; Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, South China Agricultural University, Guangzhou, PR China
| | - Xiaoyong Zhang
- College of Marine Sciences, South China Agricultural University, Guangzhou, PR China; Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, South China Agricultural University, Guangzhou, PR China
| | - Hongyan Sun
- College of Marine Sciences, South China Agricultural University, Guangzhou, PR China; Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, South China Agricultural University, Guangzhou, PR China
| | - Lanfen Fan
- College of Marine Sciences, South China Agricultural University, Guangzhou, PR China; Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, South China Agricultural University, Guangzhou, PR China.
| | - Muting Yan
- College of Marine Sciences, South China Agricultural University, Guangzhou, PR China; Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, South China Agricultural University, Guangzhou, PR China.
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Tassanakajon A, Rimphanitchayakit V, Visetnan S, Amparyup P, Somboonwiwat K, Charoensapsri W, Tang S. Shrimp humoral responses against pathogens: antimicrobial peptides and melanization. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 80:81-93. [PMID: 28501515 DOI: 10.1016/j.dci.2017.05.009] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 05/10/2017] [Accepted: 05/10/2017] [Indexed: 06/07/2023]
Abstract
Diseases have caused tremendous economic losses and become the major problem threatening the sustainable development of shrimp aquaculture. The knowledge of host defense mechanisms against invading pathogens is essential for the implementation of efficient strategies to prevent disease outbreaks. Like other invertebrates, shrimp rely on the innate immune system to defend themselves against a range of microbes by recognizing and destroying them through cellular and humoral immune responses. Detection of microbial pathogens triggers the signal transduction pathways including the NF-κB signaling, Toll and Imd pathways, resulting in the activation of genes involved in host defense responses. In this review, we update the discovery of components of the Toll and Imd pathways in shrimp and their participation in the regulation of shrimp antimicrobial peptide (AMP) synthesis. We also focus on a recent progress on the two most powerful and the best-studied shrimp humoral responses: AMPs and melanization. Shrimp AMPs are mainly cationic peptides with sequence diversity which endues them the broad range of activities against microorganisms. Melanization, regulated by the prophenoloxidase activating cascade, also plays a crucial role in killing and sequestration of invading pathogens. The progress and emerging research on mechanisms and functional characterization of components of these two indispensable humoral responses in shrimp immunity are summarized and discussed. Interestingly, the pattern recognition protein (PRP) crosstalk is evidenced between the proPO activating cascade and the AMP synthesis pathways in shrimp, which enables the innate immune system to build up efficient immune responses.
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Affiliation(s)
- Anchalee Tassanakajon
- Center of Excellence for Molecular Biology and Genomics of Shrimp, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Phyathai Road, Bangkok 10330, Thailand.
| | - Vichien Rimphanitchayakit
- Center of Excellence for Molecular Biology and Genomics of Shrimp, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Phyathai Road, Bangkok 10330, Thailand
| | - Suwattana Visetnan
- Center of Excellence for Molecular Biology and Genomics of Shrimp, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Phyathai Road, Bangkok 10330, Thailand
| | - Piti Amparyup
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Paholyothin Road, Klong1, Klong Luang, Pathumthani 12120, Thailand
| | - Kunlaya Somboonwiwat
- Center of Excellence for Molecular Biology and Genomics of Shrimp, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Phyathai Road, Bangkok 10330, Thailand
| | - Walaiporn Charoensapsri
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Paholyothin Road, Klong1, Klong Luang, Pathumthani 12120, Thailand
| | - Sureerat Tang
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Paholyothin Road, Klong1, Klong Luang, Pathumthani 12120, Thailand
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Yuan K, Yuan FH, Weng SP, He JG, Chen YH. Identification and functional characterization of a novel Spätzle gene in Litopenaeus vannamei. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2017; 68:46-57. [PMID: 27884706 DOI: 10.1016/j.dci.2016.11.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 11/18/2016] [Accepted: 11/18/2016] [Indexed: 06/06/2023]
Abstract
Shrimp innate immunity is the first line of resistance against pathogenic bacteria. The Toll-like receptor (TLR)-NF-κB pathway is vital in this immunity process. In this study, a novel Spätzle gene (LvSpz4) of Litopenaeus vannamei was cloned and functionally characterized. The open reading frame of LvSpz4 was 918 bp, which encoded a putative protein with 305 amino acids. LvSpz4 was most expressed in the gills of L. vannamei. This expression was induced by Vibrio alginolyticus or Staphylococcus aureus infection or lipopolysaccharide stimulation. The reporter gene assay showed that LvSpz4 could activate the promoters of Pen4, Drs, AttA, Mtk, and white spot syndrome virus immediate early gene1 in Drosophila Schneider 2 (S2) cells. Knockdown LvSpz4 increased the cumulative mortality of L. vannamei upon V. alginolyticus infection. The unfolded protein response (UPR) induced the expression of LvSpz4 in L. vannamei. Moreover, the promoter of LvSpz4 was activated by L. vannamei X-Box binding protein 1 and activating transcription factor 4 in S2 cells. These results suggested that LvSpz4 was involved in L. vannamei innate immunity and caused the crosstalk between the TLR-NF-κB pathway and UPR.
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Affiliation(s)
- Kai Yuan
- School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, PR China; State Key Laboratory for Biocontrol, MOE Key Laboratory of Aquatic Product Safety, Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, PR China
| | - Feng-Hua Yuan
- School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, PR China; State Key Laboratory for Biocontrol, MOE Key Laboratory of Aquatic Product Safety, Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, PR China
| | - Shao-Ping Weng
- School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, PR China; State Key Laboratory for Biocontrol, MOE Key Laboratory of Aquatic Product Safety, Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, PR China
| | - Jian-Guo He
- Key Laboratory of Marine Resources and Coastal Engineering in Guangdong Province, South China Sea Bio-Resource Exploitation and Protection Collaborative Innovation Center (SCS-REPIC), School of Marine Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, PR China; School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, PR China; State Key Laboratory for Biocontrol, MOE Key Laboratory of Aquatic Product Safety, Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, PR China
| | - Yi-Hong Chen
- Key Laboratory of Marine Resources and Coastal Engineering in Guangdong Province, South China Sea Bio-Resource Exploitation and Protection Collaborative Innovation Center (SCS-REPIC), School of Marine Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, PR China; State Key Laboratory for Biocontrol, MOE Key Laboratory of Aquatic Product Safety, Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, PR China.
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Yan M, Tang J, Liang Q, Zhu G, Li H, Li C, Weng S, He J, Xu X. Daxx from Pacific white shrimp Litopenaeus vannamei is involved in activation of NF-κB pathway. FISH & SHELLFISH IMMUNOLOGY 2015; 45:443-453. [PMID: 25917972 DOI: 10.1016/j.fsi.2015.04.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 04/16/2015] [Accepted: 04/18/2015] [Indexed: 06/04/2023]
Abstract
Death domain-associated factor 6 (Daxx) is a Fas-binding protein that mediates the activation of Jun amino-terminal kinase (JNK) pathway and Fas-induced apoptosis. In this study, a crustacean Daxx (LvDaxx) was firstly cloned and identified from Pacific white shrimp Litopenaeus vannamei. The LvDaxx cDNA was 2644 bp in length with an Open Reading Frame (ORF) of 2217 bp. Sequence analysis indicated that LvDaxx contained a single Daxx domain and two nuclear localization signals (NLSs) and shared a similarity with Drosophila melanogaster Daxx. LvDaxx was a nuclear-localized protein that was expressed highest in hemocytes and could be up-regulated in pathogen- and stimulant-challenge shrimps. LvDaxx could activate the artificial promoter containing an NF-κB binding site and the promoters of white spot syndrome virus (WSSV) ie1 gene and arthropod antimicrobial peptides (AMPs), suggesting LvDaxx could be involved in the activation of the NF-κB pathway. Knock-down of LvDaxx in vivo resulted in down-regulation of shrimp AMPs and reduction of WSSV copies in tissues. Furthermore, suppression of LvDaxx significantly decreased the mortality of WSSV-infected shrimps, but increased the mortality of Vibrio Parahaemolyticus-infected shrimps. Thus, these suggested that LvDaxx could play a role in the innate immunity against Vibrio parahaemolyticus in L. vannamei, while in the antiviral response, LvDaxx may be hijacked by WSSV and play a complex role in WSSV pathogenesis.
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Affiliation(s)
- Muting Yan
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Provice Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Sun Yat-sen University, Guangzhou, PR China
| | - Junliang Tang
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Provice Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Sun Yat-sen University, Guangzhou, PR China
| | - Qianhui Liang
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Provice Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China; School of Marine Sciences, Sun Yat-sen University, Guangzhou, PR China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Sun Yat-sen University, Guangzhou, PR China
| | - Guohua Zhu
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Provice Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Sun Yat-sen University, Guangzhou, PR China
| | - Haoyang Li
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Provice Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Sun Yat-sen University, Guangzhou, PR China
| | - Chaozheng Li
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Provice Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Sun Yat-sen University, Guangzhou, PR China
| | - Shaoping Weng
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Provice Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Sun Yat-sen University, Guangzhou, PR China
| | - Jianguo He
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Provice Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China; School of Marine Sciences, Sun Yat-sen University, Guangzhou, PR China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Sun Yat-sen University, Guangzhou, PR China.
| | - Xiaopeng Xu
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Provice Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Sun Yat-sen University, Guangzhou, PR China.
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Yan M, Li C, Su Z, Liang Q, Li H, Liang S, Weng S, He J, Xu X. Identification of a JAK/STAT pathway receptor domeless from Pacific white shrimp Litopenaeus vannamei. FISH & SHELLFISH IMMUNOLOGY 2015; 44:26-32. [PMID: 25659232 DOI: 10.1016/j.fsi.2015.01.023] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 01/15/2015] [Accepted: 01/25/2015] [Indexed: 06/04/2023]
Abstract
The Janus kinase/signal transducers and activators of transcription (JAK/STAT) signaling pathway was known to participate in dozens of immune responses in organisms. Domeless, first identified in Drosophila melanogaster, is a unique receptor involved in invertebrate JAK/STAT pathway. In this study, a cytokine receptor (LvDOME) was identified in Litopenaeus vannamei. The LvDOME cDNA was 5178bp in length with an Open Reading Frame (ORF) of 4191bp. LvDOME contained two cytokine binding modules (CBMs) and three fibronectin-type-III-like (FNIII) domains, similar to most vertebrate IL-6 receptors. LvDOME was expressed highest in shrimp muscle and could be up-regulated in the late stage of white spot syndrome virus (WSSV) infection. LvDOME could significantly enhance the activity of the WSSV wsv069 gene promoter through acting on the STAT-binding motif, suggesting LvDOME could activate the JAK/STAT pathway. Moreover, knockdown of LvDOME resulted in lower cumulative mortality of shrimps and less WSSV copies, suggesting LvDOME may be hijacked by WSSV to benefit virus replication. To our knowledge, this is the first report on the receptor of JAK/STAT pathway in shrimp.
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Affiliation(s)
- Muting Yan
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China
| | - Chaozheng Li
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China
| | - Ziqi Su
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China
| | - Qianhui Liang
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China
| | - Haoyang Li
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China
| | - Shizhong Liang
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China
| | - Shaoping Weng
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China
| | - Jianguo He
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China; School of Marine Sciences, Sun Yat-sen University, Guangzhou, PR China.
| | - Xiaopeng Xu
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China.
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7
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Zhang S, Qiu W, Chen YG, Yuan FH, Li CZ, Yan H, Weng SP, He JG. Flightless-I (FliI) is a potential negative regulator of the Toll pathway in Litopenaeus vannamei. FISH & SHELLFISH IMMUNOLOGY 2015; 42:413-425. [PMID: 25449702 DOI: 10.1016/j.fsi.2014.10.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 10/10/2014] [Accepted: 10/17/2014] [Indexed: 06/04/2023]
Abstract
Flightless-I (FliI) is a protein negatively modulates the Toll-like receptor (TLR) pathway through interacting with Myeloid differentiation factor 88 (MyD88). To investigate the function of FliI in innate immune responses in invertebrates, Litopenaeus vannamei FliI (LvFliI) was identified and characterized. The full-length cDNA of LvFliI is 4, 304 bp long, with an open reading frame (ORF) encoding a putative protein of 1292 amino acids, including 12 leucine-rich repeat (LRR) domains at the N-terminus and 6 gelsolin homology (GEL) domains at the C-terminus. The LvFliI protein was located in the cytoplasm and LvFliI mRNA was constitutively expressed in healthy L. vannamei, with the highest expression level in the muscle. LvFliI could be up-regulated in hemocytes after lipopolysaccharide (LPS), poly I:C, CpG-ODN2006, Vibrio parahaemolyticus, Staphylococcus aureus, and white spot syndrome virus (WSSV) challenges, suggesting a stimulation response of LvFliI to bacterial and immune stimulant challenges. Upon LPS stimulation, overexpression of LvFliI in Drosophila Schneider 2 cells led to downregulation of Drosophila and shrimp antimicrobial peptide (AMP) genes. Knockdown of LvFliI by RNA interference (RNAi) resulted in an increase of the expression of three shrimp AMP genes (PEN2, crustin, and Lyz1). However, the mortality rates of LvFliI-knockdown shrimp in response to V. parahaemolyticus, S. aureus or WSSV infections were not significantly different from those of the control group. Taken together, all the results suggested that LvFliI may play a negative role in TLR signaling response in L. vannamei.
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Affiliation(s)
- Shuang Zhang
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, PR China
| | - Wei Qiu
- School of Marine Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 51027, PR China
| | - Yong-gui Chen
- School of Marine Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 51027, PR China
| | - Feng-Hua Yuan
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, PR China
| | - Chao-Zheng Li
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, PR China
| | - Hui Yan
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, PR China
| | - Shao-Ping Weng
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, PR China
| | - Jian-Guo He
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, PR China; School of Marine Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 51027, PR China.
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Zhang S, Shi L, Yang QH, Dong XH, Chi SY, Liu HY, Tan BP. Molecular characterization and functional analysis of Cactin gene from Litopenaeus vannamei. FISH & SHELLFISH IMMUNOLOGY 2014; 41:608-617. [PMID: 25462455 DOI: 10.1016/j.fsi.2014.10.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2014] [Revised: 10/07/2014] [Accepted: 10/08/2014] [Indexed: 06/04/2023]
Abstract
Cactin (Cactus interactor) is a conserved protein which was initially discovered as a novel interactor of Drosophila IkB protein Cactus. Cactin was always characterized as a negative regulator of many different developmental processes, but only found to play an immune role in humans. To better know the immune function of Cactin gene, Litopenaeus vannamei Cactin (LvCactin) was identified and characterized in this study. The full-length cDNA of LvCactin is 3, 150 bp long, with an open reading frame (ORF) encoding a Cactin_mid domain in the N-terminus 356–547 residues and a CactinC_cactus domain in the C-terminal 731–855 residues. The LvCactin protein was located in the cytoplasm and LvCactin mRNA was constitutively expressed in healthy L. vannamei, with the highest expression level in the eyestalk. LvCactin could be regulated in hemocytes after lipopolysaccharide (LPS), poly I:C, CpG-ODN2006, Vibrio parahaemolyticus, Staphylococcus aureus, and white spot syndrome virus (WSSV) challenges. Dual-luciferase reporter assays in Drosophila Schneider 2 cells revealed that LvCactin inhibited the promoters of Drosophila and shrimp antimicrobial peptide (AMP) genes. Knockdown of LvCactin by RNA interference (RNAi) increased the expression of shrimp AMP genes PEN4, crustin and ALF2 but not Lyz2. However, the mortality rates of LvCactin-knockdown shrimp in response to V. parahaemolyticus or WSSV infections were not significantly different from those of the control group. Taken together, all the results suggested that LvCactin may play a role in innate immune in L. vannamei.
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Affiliation(s)
- Shuang Zhang
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, PR China
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