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Huang DY, Qin JS, Dong RK, Liu SN, Chen N, Yuan DW, Li S, Wang Z, Xia X. Ben-JNK signaling is required for host mortality during Periplaneta fuliginosa densovirus infection. PEST MANAGEMENT SCIENCE 2024. [PMID: 38676657 DOI: 10.1002/ps.8154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 04/08/2024] [Accepted: 04/24/2024] [Indexed: 04/29/2024]
Abstract
BACKGROUND Cockroaches are widely acknowledged as significant vectors of pathogenic microorganisms. The Periplaneta fuliginosa densovirus (PfDNV) infects the smoky-brown cockroach P. fuliginosa and causes host mortality, which identifies the PfDNV as a species-specific and environmentally friendly biopesticide. However, although the biochemical characterization of PfDNV has been extensively studied, the immune response against PfDNV remains largely unclear. RESULTS Here, we investigated the replication of PfDNV and its associated pathological phenotype in the foregut and hindgut. Consequently, we dissected and performed transcriptome sequencing on the foregut, midgut, and hindgut separately. We revealed the up-regulation of immune response signaling pathway c-Jun N-terminal kinase (JNK) and apoptosis in response to viral infection. Furthermore, knockdown of the JNK upstream gene Ben resulted in a decrease in virus titer and delayed host mortality. CONCLUSION Taken together, our findings provide evidence that the Ben-JNK signaling plays a crucial role in PfDNV infection, leading to excessive apoptosis in intestinal tissues and ultimately resulting in the death of the host. Our results indicated that the host response to PfDNV fosters viral infection, thereby increasing host lethality. This underscores the potential of PfDNV as a viable, environmentally friendly biopesticide. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Dan-Yan Huang
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Guangzhou Key Laboratory of Insect Development Regulation and Application Research, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Jia-Si Qin
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Guangzhou Key Laboratory of Insect Development Regulation and Application Research, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Ren-Ke Dong
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Guangzhou Key Laboratory of Insect Development Regulation and Application Research, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Su-Ning Liu
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Guangzhou Key Laboratory of Insect Development Regulation and Application Research, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Nan Chen
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Guangzhou Key Laboratory of Insect Development Regulation and Application Research, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Dong-Wei Yuan
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Guangzhou Key Laboratory of Insect Development Regulation and Application Research, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Sheng Li
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Guangzhou Key Laboratory of Insect Development Regulation and Application Research, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
- Guangmeiyuan R&D Center, Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, South China Normal University, Meizhou, China
| | - Zhaowei Wang
- State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-sen University, Shenzhen, China
| | - Xiaoling Xia
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Guangzhou Key Laboratory of Insect Development Regulation and Application Research, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou, China
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Liu H, Xu X, Bai X, Li Y, Wang J, Lv A, Luo Z. Development of a TaqMan real-time quantitative PCR assay to detect Metschnikowia bicuspidata in Chinese mitten crab Eriocheir sinensis. DISEASES OF AQUATIC ORGANISMS 2022; 152:17-25. [PMID: 36394137 DOI: 10.3354/dao03704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Milky disease of Chinese mitten crab Eriocheir sinensis caused by Metschnikowia bicuspidata is a novel disease with high mortality. No effective treatment is currently available, but a rapid, accurate detection method is required for the prevention and control of the disease. In this study, the genome-sequencing results of M. bicuspidata and similar species were used for comparative genomic analysis for genes specific to M. bicuspidata. A quantitative PCR (qPCR) detection method for M. bicuspidata was then established using the specific primers and probes designed according to the sequence of a hypothetical protein gene specific to M. bicuspidata. The assay was found to have a high degree of repeatability and reproducibility, with a linear dynamic range (R2 = 0.998) extending over 9 log10 dilutions and a high efficiency (100.7%). Furthermore, the method showed high sensitivity, being able to detect at least 11.3 copies μl-1 of recombinant plasmid, and strong specificity, without any cross-reaction with any of the 9 species of yeast that are closely related to M. bicuspidata or any of 16 species of pathogenic bacteria commonly observed in aquatic animals. The established method was used to examine 138 apparently healthy crabs collected from 22 farms, with 21 samples (15.2%) found to be M. bicuspidata-positive. Thus, the developed qPCR assay is a specific, sensitive, stable, and rapid diagnostic method for the detection and quantification of M. bicuspidata DNA from E. sinensis tissues.
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Affiliation(s)
- Houfu Liu
- Tianjin Key Lab of Aqua-Ecology and Aquaculture, College of Fisheries, Tianjin Agricultural University, Tianjin 300384, PR China
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A panoptic review of techniques for finfish disease diagnosis: The status quo and future perspectives. J Microbiol Methods 2022; 196:106477. [DOI: 10.1016/j.mimet.2022.106477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/21/2022] [Accepted: 04/21/2022] [Indexed: 12/27/2022]
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Sukonta T, Senapin S, Meemetta W, Chaijarasphong T. CRISPR-based platform for rapid, sensitive and field-deployable detection of scale drop disease virus in Asian sea bass (Lates calcarifer). JOURNAL OF FISH DISEASES 2022; 45:107-120. [PMID: 34613623 DOI: 10.1111/jfd.13541] [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: 08/05/2021] [Revised: 09/18/2021] [Accepted: 09/20/2021] [Indexed: 06/13/2023]
Abstract
Scale drop disease virus (SDDV) is a major pathogen of Asian sea bass that has emerged in many countries across the Asia Pacific since 1992 and carries the potential to cause drastic economic losses to the aquaculture sector. The lack of an approved vaccine for SDDV necessitates timely prevention as the first line of defence against the disease, but current diagnostic platforms still face challenges that render them incompatible with field applications, particularly in resource-limited settings. Here, we developed a novel detection platform for SDDV based on a CRISPR-Cas12a-based nucleic acid detection technology combined with recombinase polymerase amplification (RPA-Cas12a). Using the viral adenosine triphosphatase (SDDV-ATPase) gene as a target, we achieved the detection limit of 40 copies per reaction and high specificity for SDDV. The coupling with fluorescence and lateral flow readouts enables naked-eye visualization and straightforward data interpretation requiring minimal scientific background. Compared with semi-nested PCR in field sample evaluation, our RPA-Cas12a assay is more sensitive and capable of detecting SDDV in asymptomatic fish. Importantly, the entire workflow can be carried out at a constant temperature of 37°C within an hour from start to finish, thus removing the need for an expensive thermal cycling apparatus and long turnaround times associated with PCR-based methods. Therefore, owing to its high accuracy, rapidity and user-friendliness, the developed RPA-Cas12a platform shows the potential for diagnosis of SDDV at point of need and could be a valuable tool to help protect fish farming communities from large-scale epidemics.
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Affiliation(s)
- Thanwarat Sukonta
- Department of Biotechnology, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Saengchan Senapin
- Department of Biotechnology, Faculty of Science, Mahidol University, Bangkok, Thailand
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
- Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Watcharachai Meemetta
- Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Thawatchai Chaijarasphong
- Department of Biotechnology, Faculty of Science, Mahidol University, Bangkok, Thailand
- Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Faculty of Science, Mahidol University, Bangkok, Thailand
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Prasitporn T, Senapin S, Vaniksampanna A, Longyant S, Chaivisuthangkura P. Development of cross-priming amplification (CPA) combined with colorimetric and lateral flow dipstick visualization for scale drop disease virus (SDDV) detection. JOURNAL OF FISH DISEASES 2021; 44:1411-1422. [PMID: 34041757 DOI: 10.1111/jfd.13448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 04/30/2021] [Accepted: 05/04/2021] [Indexed: 06/12/2023]
Abstract
Scale drop disease virus (SDDV) is one of the most important pathogens that causes scale drop disease (SDD) in Asian sea bass (Lates calcarifer). The outbreaks of this disease are one of the factors causing substantial losses in Asian sea bass aquaculture. In this study, the uracil-DNA glycosylase (UDG)-supplemented cross-priming amplification (UCPA) combined with a colorimetric detection method using the hydroxynaphthol blue (HNB) and lateral flow dipstick (LFD) for detection of SDDV was developed. The UDG was utilized to prevent carryover contamination, and the CPA reactions can be readily observed by HNB and LFD. The CPA primers and probe were designed to target the major capsid protein (MCP) gene of the SDDV. The optimized UCPA conditions were performed at the temperature of 61°C for 60 min. The UCPA assays demonstrated specificity to SDDV without cross-reaction to other tested viruses including red-spotted grouper nervous necrosis virus (RGNNV), infectious spleen and kidney necrosis virus (ISKNV) and Lates calcarifer herpes virus (LCHV), and other bacterial species commonly found in aquatic animals. The sensitivity of the UCPA-HNB and UCPA-LFD was 100 viral copies/µl and 10 pg of extracted total DNA, which was 10-fold more sensitive than that of conventional PCR. The UCPA-HNB and UCPA-LFD assays could be used to detect the SDDV infection in all 25 confirmed SDDV-infected fish samples. Therefore, the UCPA coupled with HNB and LFD was rapid, simple and effective and might be applied for diagnosis of SDDV infection.
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Affiliation(s)
- Terawut Prasitporn
- Department of Biology, Faculty of Science, Srinakharinwirot University, Bangkok, Thailand
- Center of Excellence in Animal, Plant and Parasite Biotechnology, Srinakharinwirot University, Bangkok, Thailand
| | - Saengchan Senapin
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, Thailand
| | | | - Siwaporn Longyant
- Department of Biology, Faculty of Science, Srinakharinwirot University, Bangkok, Thailand
- Center of Excellence in Animal, Plant and Parasite Biotechnology, Srinakharinwirot University, Bangkok, Thailand
| | - Parin Chaivisuthangkura
- Department of Biology, Faculty of Science, Srinakharinwirot University, Bangkok, Thailand
- Center of Excellence in Animal, Plant and Parasite Biotechnology, Srinakharinwirot University, Bangkok, Thailand
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Domingos JA, Shen X, Terence C, Senapin S, Dong HT, Tan MR, Gibson-Kueh S, Jerry DR. Scale Drop Disease Virus (SDDV) and Lates calcarifer Herpes Virus (LCHV) Coinfection Downregulate Immune-Relevant Pathways and Cause Splenic and Kidney Necrosis in Barramundi Under Commercial Farming Conditions. Front Genet 2021; 12:666897. [PMID: 34220943 PMCID: PMC8249934 DOI: 10.3389/fgene.2021.666897] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 05/19/2021] [Indexed: 01/31/2023] Open
Abstract
Marine farming of barramundi (Lates calcarifer) in Southeast Asia is currently severely affected by viral diseases. To better understand the biological implications and gene expression response of barramundi in commercial farming conditions during a disease outbreak, the presence of pathogens, comparative RNAseq, and histopathology targeting multiple organs of clinically “sick” and “healthy” juveniles were investigated. Coinfection of scale drop disease virus (SDDV) and L. calcarifer herpes virus (LCHV) were detected in all sampled fish, with higher SDDV viral loads in sick than in healthy fish. Histopathology showed that livers in sick fish often had moderate to severe abnormal fat accumulation (hepatic lipidosis), whereas the predominant pathology in the kidneys shows moderate to severe inflammation and glomerular necrosis. The spleen was the most severely affected organ, with sick fish presenting severe multifocal and coalescing necrosis. Principal component analysis (PC1 and PC2) explained 70.3% of the observed variance and strongly associated the above histopathological findings with SDDV loads and with the sick phenotypes, supporting a primary diagnosis of the fish being impacted by scale drop disease (SDD). Extracted RNA from kidney and spleen of the sick fish were also severely degraded likely due to severe inflammation and tissue necrosis, indicating failure of these organs in advanced stages of SDD. RNAseq of sick vs. healthy barramundi identified 2,810 and 556 differentially expressed genes (DEGs) in the liver and muscle, respectively. Eleven significantly enriched pathways (e.g., phagosome, cytokine-cytokine-receptor interaction, ECM-receptor interaction, neuroactive ligand-receptor interaction, calcium signaling, MAPK, CAMs, etc.) and gene families (e.g., tool-like receptor, TNF, lectin, complement, interleukin, chemokine, MHC, B and T cells, CD molecules, etc.) relevant to homeostasis and innate and adaptive immunity were mostly downregulated in sick fish. These DEGs and pathways, also previously identified in L. calcarifer as general immune responses to other pathogens and environmental stressors, suggest a failure of the clinically sick fish to cope and overcome the systemic inflammatory responses and tissue degeneration caused by SDD.
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Affiliation(s)
- Jose A Domingos
- Tropical Futures Institute, James Cook University, Singapore, Singapore.,Centre for Sustainable Tropical Fisheries and Aquaculture, James Cook University, Townsville, QLD, Australia
| | - Xueyan Shen
- Tropical Futures Institute, James Cook University, Singapore, Singapore
| | - Celestine Terence
- Tropical Futures Institute, James Cook University, Singapore, Singapore
| | - Saengchan Senapin
- Faculty of Science, Fish Health Platform, Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Mahidol University, Bangkok, Thailand.,National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani, Thailand
| | - Ha Thanh Dong
- Faculty of Science, Fish Health Platform, Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Mahidol University, Bangkok, Thailand.,Faculty of Science and Technology, Suan Sunandha Rajabhat University, Bangkok, Thailand
| | - Marie R Tan
- School of Applied Science (SAS), Republic Polytechnic, Singapore, Singapore
| | - Susan Gibson-Kueh
- Tropical Futures Institute, James Cook University, Singapore, Singapore
| | - Dean R Jerry
- Tropical Futures Institute, James Cook University, Singapore, Singapore.,Centre for Sustainable Tropical Fisheries and Aquaculture, James Cook University, Townsville, QLD, Australia
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Charoenwai O, Senapin S, Dong HT, Sonthi M. Detection of scale drop disease virus from non-destructive samples and ectoparasites of Asian sea bass, Lates calcarifer. JOURNAL OF FISH DISEASES 2021; 44:461-467. [PMID: 33118189 DOI: 10.1111/jfd.13290] [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: 06/24/2020] [Revised: 10/06/2020] [Accepted: 10/07/2020] [Indexed: 06/11/2023]
Abstract
Non-destructive sampling methods offer practical advantages to detection and monitoring of viral pathogens in economically important farmed fish and broodstock. Here, we investigated whether blood, mucus and fin can be used as non-lethal sample sources for detection of scale drop disease virus (SDDV) in farmed Asian sea bass, Lates calcarifer. Detection of SDDV was performed in parallel from three non-destructive and seven destructive sample types, collected from both clinically sick fish and subclinical fish obtained from an affected farm. The results showed that SDDV was detectable in all 10 sample types with the percentage ranging from 20% to 100%. Blood was the best non-destructive sample source exhibited by the fact that it yielded 100% SDDV-positive tests from both sick (n = 12, 95% CI: 69.9-99.2) and clinically healthy fish (n = 4, 95% CI: 39.6%-97.4%) and is considered a "sterile" sample. This study also revealed concurrent infection of SDDV and two ectoparasites Lernanthropus sp. and Diplectanum sp., in all affected fish (n = 8, 95% CI: 46.7-99.3) during the disease outbreak. These ectoparasites also tested positive for SDDV by PCR, indicating that they were potential sample sources for PCR-based detection of SDDV and possibly other viruses infecting Asian sea bass.
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Affiliation(s)
- Onanong Charoenwai
- Faculty of Marine Technology, Burapha University Chanthaburi Campus, Chanthaburi, Thailand
- Aquatic Animal Disease Diagnostics and Immunology Research Unit, Burapha University Chanthaburi Campus, Chanthaburi, Thailand
| | - Saengchan Senapin
- Fish Health Platform, Faculty of Science, Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Mahidol University, Bangkok, Thailand
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Ha Thanh Dong
- Faculty of Science and Technology, Suan Sunandha Rajabhat University, Bangkok, Thailand
| | - Molruedee Sonthi
- Faculty of Marine Technology, Burapha University Chanthaburi Campus, Chanthaburi, Thailand
- Aquatic Animal Disease Diagnostics and Immunology Research Unit, Burapha University Chanthaburi Campus, Chanthaburi, Thailand
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Meemetta W, Domingos JA, Dong HT, Senapin S. Development of a SYBR Green quantitative PCR assay for detection of Lates calcarifer herpesvirus (LCHV) in farmed barramundi. J Virol Methods 2020; 285:113920. [PMID: 32579895 DOI: 10.1016/j.jviromet.2020.113920] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/13/2020] [Accepted: 06/14/2020] [Indexed: 01/02/2023]
Abstract
Lates calcarifer herpes virus (LCHV) is a novel virus of farmed barramundi in Southeast Asia. However, a rapid detection method is yet to be available for LCHV. This study, therefore, aimed to develop a rapid quantitative PCR (qPCR) detection method for LCHV and made it timely available to public for disease diagnostics and surveillance in barramundi farming countries. A newly designed primer set targeting a 93-bp fragment of the LCHV putative major envelope protein encoding gene (MEP) was used for developing and optimizing a SYBR Green based qPCR assay. The established protocol could detect as low as 10 viral copies per μl of DNA template in a reaction containing spiked host DNA. No cross-amplification with genomic DNA extracted from host as well as common aquatic pathogens (12 bacteria and 4 viruses) were observed. Validation test of the method with clinical samples revealed that the virus was detected in multiple organs of the clinically sick fish but not in the healthy fish. We thus recommend that barramundi farming countries should promptly initiate active surveillance for LCHV in order to understand their circulation for preventing possibly negative impact to the industry.
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Affiliation(s)
- Watcharachai Meemetta
- Fish Health Platform, Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
| | - Jose A Domingos
- Tropical Futures Institute, James Cook University, 387380, Singapore
| | - Ha Thanh Dong
- Faculty of Science and Technology, Suan Sunandha Rajabhat University, Bangkok, 10300, Thailand.
| | - Saengchan Senapin
- Fish Health Platform, Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Faculty of Science, Mahidol University, Bangkok, 10400, Thailand; National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand.
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