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Huang Z, Li Y, Yu K, Ma L, Pang B, Qin Q, Li J, Wang D, Gao H, Kan B. Genome-wide expanding of genetic evolution and potential pathogenicity in Vibrio alginolyticus. Emerg Microbes Infect 2024; 13:2350164. [PMID: 38687697 PMCID: PMC11132748 DOI: 10.1080/22221751.2024.2350164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Accepted: 04/26/2024] [Indexed: 05/02/2024]
Abstract
Vibrio alginolyticus, an emergent species of Vibrio genus, exists in aquatic and marine environments. It has undergone genetic diversification, but its detailed genomic diversity is still unclear. Here, we performed a multi-dimensional comparative genomic analysis to explore the population phylogeny, virulence-related genes and potential drug resistance genes of 184 V. alginolyticus isolates. Although genetic diversity is complex, we analysed the population structure using three sub-datasets, including the subdivision for three lineages into sublineages and the distribution of strains in the marine ecological niche. Accessory genes, most of which reclassified V. alginolyticus genomes as different but with relatively close affinities, were nonuniformly distributed among these isolates. We demonstrated that the spread of some post-evolutionary isolates (mainly L3 strains isolated from Chinese territorial seas) was likely to be closely related to human activities, whereas other more ancestral strains (strains in the L1 and L2) tended to be locally endemic and formed clonal complex groups. In terms of pathogenicity, the potential virulence factors were mainly associated with toxin, adherence, motility, chemotaxis, and the type III secretion system (T3SS). We also found five types of antibacterial drug resistance genes. The prevalence of β-lactam resistance genes was 100%, which indicated that there may be a potential risk of natural resistance to β-lactam drugs. Our study reveals insights into genomic characteristics, evolution and potential virulence-associated gene profiles of V. alginolyticus.
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Affiliation(s)
- Zhenzhou Huang
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China
- Hangzhou Center for Disease Control and Prevention, Zhejiang, People’s Republic of China
| | - Yanjun Li
- The Sixth Medical Center of PLA General Hospital, Beijing, People’s Republic of China
| | - Keyi Yu
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China
| | - Lizhi Ma
- The Third Medical Center, Chinese PLA (People’s Liberation Army) General Hospital, Beijing, People’s Republic of China
| | - Bo Pang
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China
| | - Qin Qin
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China
| | - Jie Li
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China
| | - Duochun Wang
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China
| | - He Gao
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China
| | - Biao Kan
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China
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Feng R, Chen Y, Chen T, Hu Z, Peng T. DUF1127-containing protein and ProQ had opposite effects on biofilm formation in Vibrio alginolyticus. BMC Microbiol 2024; 24:330. [PMID: 39244528 DOI: 10.1186/s12866-024-03486-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Accepted: 09/02/2024] [Indexed: 09/09/2024] Open
Abstract
The RNA binding protein is crucial for gene regulation at the post transcription level. In this study, functions of the DUF1127-containing protein and ProQ, which are RNA-binding proteins, were revealed in Vibrio alginolyticus. DUF1127 deletion increased the ability of biofilm formation, whereas ProQ deletion reduced the amount of biofilm. Moreover, extracellular proteinase secretion was significantly reduced in the DUF1127 deletion strain. ProQ, not DUF1127-containing protein, can help the cell to defense oxidative stress. Deletion of DUF1127 resulted in a higher ROS level in the cell, however, ProQ deletion showed no difference. RNA-seq unveiled the expression of genes involved in extracellular protease secretion were significantly downregulated and biofilm synthesis-related genes, such as rbsB and alsS, were differentially expressed in the DUF1127 deletion strain. ProQ affected the expression of genes involved in biofilm synthesis (flgC and flgE), virulence (betB and hutG), and oxidative stress. Moreover, the DUF1127-containing and ProQ affected the mRNA levels of various regulators, such as LysR and BetI. Overall, our study revealed that the DUF1127-containing protein and ProQ have crucial functions on biofilm formation in V. alginolyticus.
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Affiliation(s)
- Ruonan Feng
- Department of Biology, Shantou University, Shantou, 515063, Guangdong, China
| | - Ying Chen
- Department of Biology, Shantou University, Shantou, 515063, Guangdong, China
| | - Tongxian Chen
- Department of Biology, Shantou University, Shantou, 515063, Guangdong, China
- Dongguan Nancheng Business District North School, Dongguan, 523000, China
| | - Zhong Hu
- Department of Biology, Shantou University, Shantou, 515063, Guangdong, China
| | - Tao Peng
- School of Resources and Environmental Engineering, Jiangsu University of Technology, 1801 Zhongwu Avenue, Changzhou, 213001, China.
- Department of Biology, Shantou University, Shantou, 515063, Guangdong, China.
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Rafei R, Osman M, Kassem II, Dabboussi F, Weill FX, Hamze M. Spotlight on the epidemiology and antimicrobial susceptibility profiles of Vibrio species in the MENA region, 2000-2023. Future Microbiol 2024:1-21. [PMID: 39229784 DOI: 10.1080/17460913.2024.2392460] [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: 06/19/2024] [Accepted: 08/12/2024] [Indexed: 09/05/2024] Open
Abstract
Recent cholera outbreaks in many countries in the Middle East and North Africa (MENA) region have raised public health concerns and focused attention on the genus Vibrio. However, the epidemiology of Vibrio species in humans, water, and seafood is often anecdotal in this region. In this review, we screened the literature and provided a comprehensive assessment of the distribution and antibiotic resistance properties of Vibrio species in different clinical and environmental samples in the region. This review will contribute to understanding closely the real burden of Vibrio species and the spread of antibiotic-resistant strains in the MENA region. The overall objective is to engage epidemiologists, sanitarians and public health stakeholders to address this problem under the One-health ethos.
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Affiliation(s)
- Rayane Rafei
- Laboratoire Microbiologie, Santé et Environnement (LMSE), Doctoral School of Sciences & Technology, Faculty of Public Health, Lebanese University, Tripoli, 1300, Lebanon
| | - Marwan Osman
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Issmat I Kassem
- Center for Food Safety, Department of Food Science & Technology, University of Georgia, 1109 Experiment Street, Griffin, GA 30223-1797, USA
| | - Fouad Dabboussi
- Laboratoire Microbiologie, Santé et Environnement (LMSE), Doctoral School of Sciences & Technology, Faculty of Public Health, Lebanese University, Tripoli, 1300, Lebanon
| | - François-Xavier Weill
- Institut Pasteur, Université Paris Cité, Unité des Bactéries pathogènes entériques, Centre National de Référence des vibrions et du choléra, Paris, F-75015, France
| | - Monzer Hamze
- Laboratoire Microbiologie, Santé et Environnement (LMSE), Doctoral School of Sciences & Technology, Faculty of Public Health, Lebanese University, Tripoli, 1300, Lebanon
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Li X, Fei X, Chen Q, Gao Z, Yin H, Zhang C, Li S, Zhao Z. The Ugd, a capsular polysaccharide synthesis protein, regulates the bacterial motility in Vibrio alginolyticus. Microbiol Res 2024; 285:127775. [PMID: 38788350 DOI: 10.1016/j.micres.2024.127775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 05/12/2024] [Accepted: 05/17/2024] [Indexed: 05/26/2024]
Abstract
Vibrio alginolyticus is one of the most common opportunistic pathogens in marine animals and humans. In this study, A transposon mutation library of the V. alginolyticus E110 was used to identify motility-related genes, and we found three flagellar and one capsular polysaccharide (CPS) synthesis-related genes were linked to swarming motility. Then, gene deletion and complementation further confirmed that CPS synthesis-related gene ugd is involved in the swarming motility of V. alginolyticus. Phenotype assays showed that the Δugd mutant reduced CPS production, decreased biofilm formation, impaired swimming ability, and increased cytotoxicity compared to the wild-type strain. Transcriptome analysis showed that 655 genes (15%) were upregulated and 914 genes (21%) were downregulated in the Δugd strain. KEGG pathway and heatmap analysis revealed that genes involved in two-component systems (TCSs), chemotaxis, and flagella assembly pathways were downregulated in the Δugd mutant. On the other hand, genes involved in pathways of human diseases, biosynthesis ABC transporters, and metabolism were upregulated in the Δugd mutant. The RT-qPCR further validated that ugd-regulated genes are associated with motility, biofilm formation, virulence, and TCSs. These findings imply that ugd may be an important player in the control of some physiological processes in V. alginolyticus, highlighting its potential as a target for future research and potential therapeutic interventions.
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Affiliation(s)
- Xixi Li
- Jiangsu Province Engineering Research Center for Marine Bio-resources Sustainable Utilization, Hohai University, Nanjing 210098, China; Department of Marine Biology, College of Oceanography, Hohai University, Nanjing 210098, China
| | - Xingyi Fei
- Jiangsu Province Engineering Research Center for Marine Bio-resources Sustainable Utilization, Hohai University, Nanjing 210098, China; Department of Marine Biology, College of Oceanography, Hohai University, Nanjing 210098, China
| | - Qingwei Chen
- Jiangsu Province Engineering Research Center for Marine Bio-resources Sustainable Utilization, Hohai University, Nanjing 210098, China; Department of Marine Biology, College of Oceanography, Hohai University, Nanjing 210098, China
| | - Zimeng Gao
- Jiangsu Province Engineering Research Center for Marine Bio-resources Sustainable Utilization, Hohai University, Nanjing 210098, China; Department of Marine Biology, College of Oceanography, Hohai University, Nanjing 210098, China
| | - Han Yin
- Jiangsu Province Engineering Research Center for Marine Bio-resources Sustainable Utilization, Hohai University, Nanjing 210098, China; Department of Marine Biology, College of Oceanography, Hohai University, Nanjing 210098, China
| | - Chen Zhang
- Jiangsu Province Engineering Research Center for Marine Bio-resources Sustainable Utilization, Hohai University, Nanjing 210098, China; Department of Marine Biology, College of Oceanography, Hohai University, Nanjing 210098, China
| | - Shenao Li
- Jiangsu Province Engineering Research Center for Marine Bio-resources Sustainable Utilization, Hohai University, Nanjing 210098, China; Department of Marine Biology, College of Oceanography, Hohai University, Nanjing 210098, China
| | - Zhe Zhao
- Jiangsu Province Engineering Research Center for Marine Bio-resources Sustainable Utilization, Hohai University, Nanjing 210098, China; Department of Marine Biology, College of Oceanography, Hohai University, Nanjing 210098, China.
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Khan AA, Linkous BK, Lanza JT. Vibrio alginolyticus: A Rare Cause of Otitis Externa off the Coast of Florida. Cureus 2024; 16:e61524. [PMID: 38957264 PMCID: PMC11218426 DOI: 10.7759/cureus.61524] [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: 05/21/2024] [Accepted: 06/02/2024] [Indexed: 07/04/2024] Open
Abstract
Vibrio alginolyticus, a gram-negative marine bacterium, poses significant health risks through various infections transmitted via contaminated seawater or seafood consumption. This case report details a 42-year-old male presenting with chronic seropurulent discharge from his ear, ultimately diagnosed with otitis externa caused by V. alginolyticus. Examination findings and antibiotic sensitivity testing informed the treatment strategy, leading to a successful resolution. The increasing incidence of V. alginolyticus infections, particularly in warm coastal water, necessitated heightened clinical awareness and appropriate management. As global temperatures rise, proactive measures including patient education and accurate diagnosis become crucial in preventing disease progression and complications associated with V. alginolyticus infections.
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Affiliation(s)
- Anwar A Khan
- Medical School, Florida State University College of Medicine, Tallahassee, USA
| | - Benjamin K Linkous
- Medical School, Florida State University College of Medicine, Tallahassee, USA
| | - John T Lanza
- Otolaryngology, ENT Allergy and Associates, Fort Pierce, USA
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Córdova-Espinoza MG, González-Vázquez R, Barron-Fattel RR, Gónzalez-Vázquez R, Vargas-Hernández MA, Albores-Méndez EM, Esquivel-Campos AL, Mendoza-Pérez F, Mayorga-Reyes L, Gutiérrez-Nava MA, Medina-Quero K, Escamilla-Gutiérrez A. Aptamers: A Cutting-Edge Approach for Gram-Negative Bacterial Pathogen Identification. Int J Mol Sci 2024; 25:1257. [PMID: 38279257 PMCID: PMC10817072 DOI: 10.3390/ijms25021257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 01/04/2024] [Accepted: 01/15/2024] [Indexed: 01/28/2024] Open
Abstract
Early and accurate diagnoses of pathogenic microorganisms is essential to correctly identify diseases, treating infections, and tracking disease outbreaks associated with microbial infections, to develop precautionary measures that allow a fast and effective response in epidemics and pandemics, thus improving public health. Aptamers are a class of synthetic nucleic acid molecules with the potential to be used for medical purposes, since they can be directed towards any target molecule. Currently, the use of aptamers has increased because they are a useful tool in the detection of specific targets. We present a brief review of the use of aptamers to detect and identify bacteria or even some toxins with clinical importance. This work describes the advances in the technology of aptamers, with the purpose of providing knowledge to develop new aptamers for diagnoses and treatment of different diseases caused by infectious microorganisms.
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Affiliation(s)
- María Guadalupe Córdova-Espinoza
- Immunology Laboratory, Escuela Militar de Graduados de Sanidad, SEDENA, Mexico City 11200, Mexico;
- National School of Biological Sciences, National Polytechnic Institute, Laboratory of Medical Bacteriology, Mexico City 11350, Mexico; (R.G.-V.); (R.R.B.-F.)
- Mexican Social Security Institute, Unidad Medica de Alta Especialidad, Hospital de Especialidades, “Dr. Antonio Fraga Mouret”, National Medical Center La Raza, Mexico City 02990, Mexico
| | - Rosa González-Vázquez
- National School of Biological Sciences, National Polytechnic Institute, Laboratory of Medical Bacteriology, Mexico City 11350, Mexico; (R.G.-V.); (R.R.B.-F.)
- Mexican Social Security Institute, Unidad Medica de Alta Especialidad, Hospital de Especialidades, “Dr. Antonio Fraga Mouret”, National Medical Center La Raza, Mexico City 02990, Mexico
| | - Rolando Rafik Barron-Fattel
- National School of Biological Sciences, National Polytechnic Institute, Laboratory of Medical Bacteriology, Mexico City 11350, Mexico; (R.G.-V.); (R.R.B.-F.)
| | - Raquel Gónzalez-Vázquez
- Laboratory of Biotechnology, Department of Biological Systems, Metropolitana Campus Xochimilco, CONAHCYT—Universidad Autonoma, Calzada del Hueso 1100, Col. Villa Quietud, Alcaldia Coyoacan, Mexico City 04960, Mexico;
| | - Marco Antonio Vargas-Hernández
- Research Department, Escuela Militar de Graduados de Sanidad, SEDENA, Mexico City 11200, Mexico; (M.A.V.-H.); (E.M.A.-M.)
| | - Exsal Manuel Albores-Méndez
- Research Department, Escuela Militar de Graduados de Sanidad, SEDENA, Mexico City 11200, Mexico; (M.A.V.-H.); (E.M.A.-M.)
| | - Ana Laura Esquivel-Campos
- Laboratory of Biotechnology, Department of Biological Systems, Universidad Autonoma Metropolitana, Campus Xochimilco, Calzada del Hueso 1100, Col. Villa Quietud, Alcaldia Coyoacan, Mexico City 04960, Mexico; (A.L.E.-C.); (F.M.-P.); (L.M.-R.)
| | - Felipe Mendoza-Pérez
- Laboratory of Biotechnology, Department of Biological Systems, Universidad Autonoma Metropolitana, Campus Xochimilco, Calzada del Hueso 1100, Col. Villa Quietud, Alcaldia Coyoacan, Mexico City 04960, Mexico; (A.L.E.-C.); (F.M.-P.); (L.M.-R.)
| | - Lino Mayorga-Reyes
- Laboratory of Biotechnology, Department of Biological Systems, Universidad Autonoma Metropolitana, Campus Xochimilco, Calzada del Hueso 1100, Col. Villa Quietud, Alcaldia Coyoacan, Mexico City 04960, Mexico; (A.L.E.-C.); (F.M.-P.); (L.M.-R.)
| | - María Angélica Gutiérrez-Nava
- Laboratory of Microbial Ecology, Department of Biological Systems, Universidad Autonoma Metropolitana, Campus Xochimilco, Calzada del Hueso 1100, Col. Villa Quietud, Coyoacan, Mexico City 04960, Mexico;
| | - Karen Medina-Quero
- Immunology Laboratory, Escuela Militar de Graduados de Sanidad, SEDENA, Mexico City 11200, Mexico;
| | - Alejandro Escamilla-Gutiérrez
- National School of Biological Sciences, National Polytechnic Institute, Laboratory of Medical Bacteriology, Mexico City 11350, Mexico; (R.G.-V.); (R.R.B.-F.)
- Mexican Social Security Institute, Unidad Medica de Alta Especialidad, Microbiology Laboratory, Hospital General “Dr. Gaudencio González Garza”, National Medical Center La Raza, Mexico City 02990, Mexico
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Zheng P, Lun J, Yu F, Huang T, Peng T, Li J, Hu Z. Deletion of ArmPT, a LamB-like protein, increases cell membrane permeability and antibiotic sensitivity in Vibrio alginolyticus. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 270:115855. [PMID: 38157797 DOI: 10.1016/j.ecoenv.2023.115855] [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: 07/26/2023] [Revised: 11/29/2023] [Accepted: 12/15/2023] [Indexed: 01/03/2024]
Abstract
Vibrio bacterial species are dominant pathogens in mariculture animals. However, the extensive use of antibiotics and other chemicals has increased drug resistance in Vibrio bacteria. Despite rigorous investigative studies, the mechanism of drug resistance in Vibrio remains a mystery. In this study, we found that a gene encoding LamB-like outer membrane protein, named ArmPT, was upregulated in Va under antibiotic stress by RT-qPCR. We speculated that ArmPT might play a role in Va's drug resistance. Subsequently, using ArmPT gene knockout and gene complementation experiments, we confirmed its role in resistance against a variety of antibiotics, particularly kanamycin (KA). Transcriptomic and proteomic analyses identified 188 and 83 differentially expressed genes in the mutant strain compared with the wild-type (WT) before and after KA stress, respectively. Bioinformatic analysis predicted that ArmPT might control cell membrane permeability by changing cadaverine biosynthesis, thereby influencing the cell entry of antibiotics in Va. The higher levels of intracellular reactive oxygen species and the infused content of KA showed that antibiotics are more likely to enter the Va mutant strain. These results uncover the drug resistance mechanism of Va that can also exist in other similar pathogenic bacteria.
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Affiliation(s)
- Peng Zheng
- Department of Biology, Shantou University, Shantou, Guangdong 515063, China
| | - Jingsheng Lun
- Department of Biology, Shantou University, Shantou, Guangdong 515063, China
| | - Fei Yu
- Department of Biology, Shantou University, Shantou, Guangdong 515063, China
| | - Tongwang Huang
- Department of Biology, Shantou University, Shantou, Guangdong 515063, China
| | - Tao Peng
- Department of Biology, Shantou University, Shantou, Guangdong 515063, China
| | - Jin Li
- College of Life Sciences, China West Normal University, Nanchong 637002, China.
| | - Zhong Hu
- Department of Biology, Shantou University, Shantou, Guangdong 515063, China.
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Kuang SF, Xiang J, Chen YT, Peng XX, Li H, Peng B. Exogenous pyruvate promotes gentamicin uptake to kill antibiotic-resistant Vibrio alginolyticus. Int J Antimicrob Agents 2024; 63:107036. [PMID: 37981076 DOI: 10.1016/j.ijantimicag.2023.107036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 11/05/2023] [Accepted: 11/14/2023] [Indexed: 11/21/2023]
Abstract
OBJECTIVES Elucidating antibiotic resistance mechanisms is necessary for developing novel therapeutic strategies. The increasing incidence of antibiotic-resistant Vibrio alginolyticus infection threatens both human health and aquaculture, but the mechanism has not been fully elucidated. METHODS Here, an isobaric tags for relative and absolute quantification (iTRAQ) functional proteomics analysis was performed on gentamicin-resistant V. alginolyticus (VA-RGEN) and a gentamicin-sensitive strain in order to characterize the global protein expression changes upon gentamicin resistance. Then, the bacterial killing assay and bacterial gentamicin pharmacokinetics were performed. RESULTS Proteomics analysis demonstrated a global metabolic downshift in VA-RGEN, where the pyruvate cycle (the P cycle) was severely compromised. Exogenous pyruvate restored the P cycle activity, disrupting the redox state and increasing the membrane potential. It thereby potentiated gentamicin-mediated killing by approximately 3000- and 150-fold in vitro and in vivo, respectively. More importantly, bacterial gentamicin pharmacokinetics indicated that pyruvate enhanced gentamicin influx to a degree that exceeded the gentamicin expelled by the bacteria, increasing the intracellular gentamicin. CONCLUSION Thus, our study suggests a metabolism-based approach to combating gentamicin-resistant V. algonolyticus, which paves the way for combating other types of antibiotic-resistant bacterial pathogens.
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Affiliation(s)
- Su-Fang Kuang
- State Key Laboratory of Bio-Control, Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China; Laboratory for Marine Biology and Biotechnology & Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; School of Health, College of Life Sciences, Jiangxi Normal University, Nanchang, China
| | - Jiao Xiang
- State Key Laboratory of Bio-Control, Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Yue-Tao Chen
- State Key Laboratory of Bio-Control, Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Xuan-Xian Peng
- State Key Laboratory of Bio-Control, Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China; Laboratory for Marine Biology and Biotechnology & Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Hui Li
- State Key Laboratory of Bio-Control, Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China; Laboratory for Marine Biology and Biotechnology & Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Bo Peng
- State Key Laboratory of Bio-Control, Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China; Laboratory for Marine Biology and Biotechnology & Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
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9
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Wang Y, Hou Y, Liu X, Lin N, Dong Y, Liu F, Xia W, Zhao Y, Xing W, Chen J, Chen C. Rapid visual nucleic acid detection of Vibrio alginolyticus by recombinase polymerase amplification combined with CRISPR/Cas13a. World J Microbiol Biotechnol 2023; 40:51. [PMID: 38146036 DOI: 10.1007/s11274-023-03847-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 11/18/2023] [Indexed: 12/27/2023]
Abstract
Vibrio alginolyticus (V. alginolyticus) is a common pathogen in the ocean. In addition to causing serious economic losses in aquaculture, it can also infect humans. The rapid detection of nucleic acids of V. alginolyticus with high sensitivity and specificity in the field is very important for the diagnosis and treatment of infection caused by V. alginolyticus. Here, we established a simple, fast and effective molecular method for the identification of V. alginolyticus that does not rely on expensive instruments and professionals. The method integrates recombinase polymerase amplification (RPA) technology with CRISPR system in a single PCR tube. Using this method, the results can be visualized by lateral flow dipstick (LFD) in less than 50 min, we named this method RPA-CRISPR/Cas13a-LFD. The method was confirmed to achieve high specificity for the detection of V. alginolyticus with no cross-reactivity with similar Vibrio and common clinical pathogens. This diagnostic method shows high sensitivity; the detection limit of the RPA-CRISPR/Cas13a-LFD is 10 copies/µL. We successfully identified 35 V. alginolyticus strains from a total of 55 different bacterial isolates and confirmed their identity by (Matrix-assisted laser desorption ionization time-of-flight mass spectrometry, MALDI-TOF MS). We also applied this method on infected mice blood, and the results were both easily and rapidly obtained. In conclusion, RPA-CRISPR/Cas13a-LFD offers great potential as a useful tool for reliable and rapid diagnosis of V. alginolyticus infection, especially in limited conditions.
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Affiliation(s)
- Yanan Wang
- Department of Clinical Laboratory, The Six Medical Center of PLA General Hospital, No. 6 Fucheng Road, Beijing, 100048, China
- Hebei North University, Zhangjiakou, Hebei, China
| | - Yachao Hou
- Department of Clinical Laboratory, The Six Medical Center of PLA General Hospital, No. 6 Fucheng Road, Beijing, 100048, China
- Hebei North University, Zhangjiakou, Hebei, China
| | - Xinping Liu
- Department of Clinical Laboratory, The Six Medical Center of PLA General Hospital, No. 6 Fucheng Road, Beijing, 100048, China
| | - Na Lin
- Institute of Clinical Laboratory, The 900Th Hospital, Xiamen University, Fuzhou, China
| | - Youyou Dong
- Department of Clinical Laboratory, The Six Medical Center of PLA General Hospital, No. 6 Fucheng Road, Beijing, 100048, China
| | - Fei Liu
- Institute of Clinical Laboratory, The 900Th Hospital, Xiamen University, Fuzhou, China
| | - Wenrong Xia
- Bei Jing Institute of Basic Medical Sciences, Beijing, China
| | - Yongqi Zhao
- Bei Jing Institute of Basic Medical Sciences, Beijing, China
| | - Weiwei Xing
- Bei Jing Institute of Basic Medical Sciences, Beijing, China.
| | - Jin Chen
- Institute of Clinical Laboratory, The 900Th Hospital, Xiamen University, Fuzhou, China.
- Institute of Clinical Medicine, The Second Affiliated Hospital of Hainan Medical University, Haikou, China.
| | - Changguo Chen
- Department of Clinical Laboratory, The Six Medical Center of PLA General Hospital, No. 6 Fucheng Road, Beijing, 100048, China.
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Marques PH, Rodrigues TCV, Santos EH, Bleicher L, Aburjaile FF, Martins FS, Oliveira CJF, Azevedo V, Tiwari S, Soares S. Design of a multi-epitope vaccine (vme-VAC/MST-1) against cholera and vibriosis based on reverse vaccinology and immunoinformatics approaches. J Biomol Struct Dyn 2023:1-16. [PMID: 38112302 DOI: 10.1080/07391102.2023.2293256] [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: 02/08/2023] [Accepted: 11/25/2023] [Indexed: 12/21/2023]
Abstract
Vibriosis and cholera are serious diseases distributed worldwide and caused by six marine bacteria of the Vibrio genus. Thousands of deaths occur each year due to these illnesses, necessitating the development of new preventive measures. Presently, the existing cholera vaccine demonstrates an effectiveness of approximately 60%. Here we describe a new multi-epitope vaccine, 'vme-VAC/MST-1' based on vaccine targets identified by reverse vaccinology and epitopes predicted by immunoinformatics, two currently effective tools for predicting new vaccines for bacterial pathogens. The vaccine was designed to combat vibriosis and cholera by incorporating epitopes predicted for CTL, HTL, and B cells. These epitopes were identified from six vaccine targets revealed through subtractive genomics, combined with reverse vaccinology, and were further filtered using immunoinformatics approaches based on their predicted immunogenicity. To construct the vaccine, 28 epitopes (24 CTL/B and 4 HTL/B) were linked to the sequence of the cholera toxin B subunit adjuvant. In silico analyses indicate that the resulting immunogen is stable, soluble, non-toxic, and non-allergenic. Furthermore, it exhibits no homology to the host and demonstrates a strong capacity to elicit innate, B-cell, and T-cell immune responses. Our analysis suggests that it is likely to elicit immune reactions mediated through the TLR5 pathway, as evidenced by the molecular docking of the vaccine with the receptor, which revealed high affinity and a favorable reaction. Thus, vme-VAC/MST-1 is predicted to be a safe and effective solution against pathogenic Vibrio spp. However, further experimental analyses are required to measure the vaccine's effects In vivo.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Pedro Henrique Marques
- Institute of Biological Sciences, Post-graduate Interunits Program in Bioinformatics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
- Department of Preventive Veterinary Medicine, School of Veterinary Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Thais Cristina Vilela Rodrigues
- Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Eduardo Horta Santos
- Institute of Biological Sciences, Post-graduate Interunits Program in Bioinformatics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Lucas Bleicher
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Flavia Figueira Aburjaile
- Department of Preventive Veterinary Medicine, School of Veterinary Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Flaviano S Martins
- Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Carlo Jose Freire Oliveira
- Department of Microbiology, Immunology and Parasitology, Institute of Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil
| | - Vasco Azevedo
- Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Sandeep Tiwari
- Institute of Biology, Federal University of Bahia, Salvador, BA, Brazil
- Institute of Health Sciences, Federal University of Bahia, Salvador, BA, Brazil
| | - Siomar Soares
- Department of Microbiology, Immunology and Parasitology, Institute of Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil
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11
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Norfolk WA, Shue C, Henderson WM, Glinski DA, Lipp EK. Vibrio alginolyticus growth kinetics and the metabolic effects of iron. Microbiol Spectr 2023; 11:e0268023. [PMID: 37966200 PMCID: PMC10714744 DOI: 10.1128/spectrum.02680-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 10/11/2023] [Indexed: 11/16/2023] Open
Abstract
IMPORTANCE Transmission of V. alginolyticus occurs opportunistically through direct seawater exposure and is a function of its abundance in the environment. Like other Vibrio spp., V. alginolyticus are considered conditionally rare taxa in marine waters, with populations capable of forming large, short-lived blooms under specific environmental conditions, which remain poorly defined. Prior research has established the importance of temperature and salinity as the major determinants of Vibrio geographical and temporal range. However, bloom formation can be strongly influenced by other factors that may be more episodic and localized, such as changes in iron availability. Here we confirm the broad temperature and salinity tolerance of V. alginolyticus and demonstrate the importance of iron supplementation as a key factor for growth in the absence of thermal or osmotic stress. The results of this research highlight the importance of episodic iron input as a crucial metric to consider for the assessment of V. alginolyticus risk.
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Affiliation(s)
- William A. Norfolk
- Department of Environmental Health Science, University of Georgia, Athens, Georgia, USA
| | - Charlyn Shue
- Department of Environmental Health Science, University of Georgia, Athens, Georgia, USA
| | - W. Matthew Henderson
- U.S. Environmental Protection Agency, Office of Research and Development, Center for Environmental Measurement and Modeling, Athens, Georgia, USA
| | - Donna A. Glinski
- U.S. Environmental Protection Agency, Office of Research and Development, Center for Environmental Measurement and Modeling, Athens, Georgia, USA
| | - Erin K. Lipp
- Department of Environmental Health Science, University of Georgia, Athens, Georgia, USA
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12
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Jorge VF, Uriel AZ, Nidia LS, Hector FV, Paul LQC, Jorge VR, Ingmar SC, Alan ZN, Alonso AA, Vicente OA, Adrian CR. Potentially Pathogenic Bacteria in Nesting Olive Ridley Turtles in Northwestern Mexico. ECOHEALTH 2023; 20:390-401. [PMID: 38110613 DOI: 10.1007/s10393-023-01662-7] [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: 09/14/2022] [Accepted: 10/03/2023] [Indexed: 12/20/2023]
Abstract
Olive ridleys (Lepidochelys olivacea) are the most common sea turtle found in the Gulf of California. Unfortunately, the bacterial flora of nesting olive ridley turtles is still unknown. We conducted a study to identify, characterize, serotype, and determine the antibiotic resistance of potentially pathogenic bacteria isolated from olive ridley turtles nesting in northwestern Mexico. Bacteria were isolated and identified from the oral cavity and cloaca of 47 postnesting turtles. Escherichia coli and Vibrio parahaemolyticus were characterized, and antibiotic resistance testing was performed. One hundred bacteria belonging to 21 species were isolated, 53 from the oral cavity and 47 from the cloaca, the most prevalent being Pseudomonas aeruginosa, followed by Aeromonas hydrophila, Vibrio alginolyticus, Vibrio parahaemolyticus, Klebsiella pneumoniae, and E. coli, among others. Moreover, two to three different bacterial species were found co-colonizing both anatomical sites in some turtles. E. coli phylogroups B1, A, F, and unknown were identified as diarrheagenic E. coli (enteroaggregative and enteropathogenic E. coli). O1, O4, K8, K12, OUT, and KUT of V. parahaemolyticus serogroups were identified, also comprising pathogenic and nonpathogenic strains. Finally, 100% of the bacterial species tested were antibiotic resistant, and both MDR and XDR strains were found. In conclusion, olive ridley turtles are colonized by a diversity of bacterial species with a high rate of antibiotic resistance, some with pathogenic potential to turtles, representing a health risk factor for the species.
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Affiliation(s)
- Valdés-Flores Jorge
- Programa Doctorado en Ciencias Biológicas, Facultad de Biología, Universidad Autónoma de Sinaloa, Culiacan, Sinaloa, Mexico
| | - Angulo-Zamudio Uriel
- School of Medicine, CIASaP, Autonomous University of Sinaloa, 80246, Culiacan, Sinaloa, Mexico
| | - León-Sicairos Nidia
- School of Medicine, CIASaP, Autonomous University of Sinaloa, 80246, Culiacan, Sinaloa, Mexico
- Pediatric Hospital of Sinaloa, 80200, Culiacan, Sinaloa, Mexico
| | - Flores-Villaseñor Hector
- School of Medicine, CIASaP, Autonomous University of Sinaloa, 80246, Culiacan, Sinaloa, Mexico
- The Sinaloa State Public Health Laboratory, Secretariat of Health, 80020, Culiacan, Sinaloa, Mexico
| | | | - Velázquez-Román Jorge
- School of Medicine, CIASaP, Autonomous University of Sinaloa, 80246, Culiacan, Sinaloa, Mexico
| | - Sosa-Cornejo Ingmar
- Programa Doctorado en Ciencias Biológicas, Facultad de Biología, Universidad Autónoma de Sinaloa, Culiacan, Sinaloa, Mexico
| | | | - Aguirre A Alonso
- Department of Fish, Wildlife and Conservation Biology, Warner College of Natural Resources, Colorado State University, Fort Collins, CO, USA
| | - Olimón-Andalón Vicente
- Programa Doctorado en Ciencias Biológicas, Facultad de Biología, Universidad Autónoma de Sinaloa, Culiacan, Sinaloa, Mexico
| | - Canizalez-Román Adrian
- School of Medicine, CIASaP, Autonomous University of Sinaloa, 80246, Culiacan, Sinaloa, Mexico.
- The Women's Hospital, Secretariat of Health, 80127, Culiacan, Mexico.
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13
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Huang Z, Yu K, Lan R, Glenn Morris J, Xiao Y, Ye J, Zhang L, Luo L, Gao H, Bai X, Wang D. Vibrio metschnikovii as an emergent pathogen: analyses of phylogeny and O-antigen and identification of possible virulence characteristics. Emerg Microbes Infect 2023; 12:2252522. [PMID: 37616379 PMCID: PMC10484048 DOI: 10.1080/22221751.2023.2252522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 08/21/2023] [Accepted: 08/23/2023] [Indexed: 08/26/2023]
Abstract
Vibrio metschnikovii is an emergent pathogen that causes human infections which may be fatal. However, the phylogenetic characteristics and pathogenicity determinants of V. metschnikovii are poorly understood. Here, the whole-genome features of 103 V. metschnikovii strains isolated from different sources are described. On phylogenetic analysis V. metschnikovii populations could be divided into two major lineages, defined as lineage 1 (L1) and 2 (L2), of which L1 was more likely to be associated with human activity. Meanwhile, we defined 29 V. metschnikovii O-genotypes (VMOg, named VMOg1-VMOg29) by analysis of the O-antigen biosynthesis gene clusters (O-AGCs). Most VMOgs (VMOg1 to VMOg28) were assembled by the Wzx/Wzy pathway, while only VMOg29 used the ABC transporter pathway. Based on the sequence variation of the wzx and wzt genes, an in silico O-genotyping system for V. metschnikovii was developed. Furthermore, nineteen virulence-associated factors involving 161 genes were identified within the V. metschnikovii genomes, including genes encoding motility, adherence, toxins, and secretion systems. In particular, V. metschnikovii was found to promote a high level of cytotoxicity through the synergistic action of the lateral flagella and T6SS. The lateral flagellar-associated flhA gene played an important role in the adhesion and colonization of V. metschnikovii during the early stages of infection. Overall, this study provides an enhanced understanding of the genomic evolution, O-AGCs diversity, and potential pathogenic features of V. metschnikovii.
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Affiliation(s)
- Zhenzhou Huang
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC), State Key Laboratory of Infectious Disease Prevention and Control, Beijing, People’s Republic of China
- Center for Human Pathogenic Culture Collection, China CDC, Beijing, People’s Republic of China
- Hangzhou Center for Disease Control and Prevention, Hangzhou, People’s Republic of China
| | - Keyi Yu
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC), State Key Laboratory of Infectious Disease Prevention and Control, Beijing, People’s Republic of China
- Center for Human Pathogenic Culture Collection, China CDC, Beijing, People’s Republic of China
| | - Ruiting Lan
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
| | - J. Glenn Morris
- Emerging Pathogens Institute, University of Florida, Gainesville, FL, USA
| | - Yue Xiao
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC), State Key Laboratory of Infectious Disease Prevention and Control, Beijing, People’s Republic of China
- Center for Human Pathogenic Culture Collection, China CDC, Beijing, People’s Republic of China
| | - Julian Ye
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, People’s Republic of China
| | - Leyi Zhang
- Wenzhou Center for Disease Control and Prevention, Wenzhou, People’s Republic of China
| | - Longze Luo
- Sichuan Provincial Center for Disease Control and Prevention, Chengdu, People’s Republic of China
| | - He Gao
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC), State Key Laboratory of Infectious Disease Prevention and Control, Beijing, People’s Republic of China
- Center for Human Pathogenic Culture Collection, China CDC, Beijing, People’s Republic of China
| | - Xuemei Bai
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC), State Key Laboratory of Infectious Disease Prevention and Control, Beijing, People’s Republic of China
- Center for Human Pathogenic Culture Collection, China CDC, Beijing, People’s Republic of China
| | - Duochun Wang
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC), State Key Laboratory of Infectious Disease Prevention and Control, Beijing, People’s Republic of China
- Center for Human Pathogenic Culture Collection, China CDC, Beijing, People’s Republic of China
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14
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Gong XX, Zeng YH, Chen HM, Zhang N, Han Y, Long H, Xie ZY. Bioinformatic and functional characterization of cyclic-di-GMP metabolic proteins in Vibrio alginolyticus unveils key diguanylate cyclases controlling multiple biofilm-associated phenotypes. Front Microbiol 2023; 14:1258415. [PMID: 37808288 PMCID: PMC10552763 DOI: 10.3389/fmicb.2023.1258415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 09/05/2023] [Indexed: 10/10/2023] Open
Abstract
The biofilm lifestyle is critical for bacterial survival and proliferation in the fluctuating marine environment. Cyclic diguanylate (c-di-GMP) is a key second messenger during bacterial adaptation to various environmental signals, which has been identified as a master regulator of biofilm formation. However, little is known about whether and how c-di-GMP signaling regulates biofilm formation in Vibrio alginolyticus, a globally dominant marine pathogen. Here, a large set of 63 proteins were predicted to participate in c-di-GMP metabolism (biosynthesis or degradation) in a pathogenic V. alginolyticus strain HN08155. Guided by protein homology, conserved domains and gene context information, a representative subset of 22 c-di-GMP metabolic proteins were selected to determine which ones affect biofilm-associated phenotypes. By comparing phenotypic differences between the wild-type and mutants or overexpression strains, we found that 22 c-di-GMP metabolic proteins can separately regulate different phenotypic outputs in V. alginolyticus. The results indicated that overexpression of four c-di-GMP metabolic proteins, including VA0356, VA1591 (CdgM), VA4033 (DgcB) and VA0088, strongly enhanced rugose colony morphotypes and strengthened Congo Red (CR) binding capacity, both of which are indicators of biofilm matrix overproduction. Furthermore, rugose enhanced colonies were accompanied by increased transcript levels of extracellular polysaccharide (EPS) biosynthesis genes and decreased expression of flagellar synthesis genes compared to smooth colonies (WTpBAD control), as demonstrated by overexpression strains WTp4033 and ∆VA4033p4033. Overall, the high abundance of c-di-GMP metabolic proteins in V. alginolyticus suggests that c-di-GMP signaling and regulatory system could play a key role in its response and adaptation to the ever-changing marine environment. This work provides a robust foundation for the study of the molecular mechanisms of c-di-GMP in the biofilm formation of V. alginolyticus.
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Affiliation(s)
- Xiao-Xiao Gong
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, Hainan, China
- Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, Hainan University, Haikou, Hainan, China
- College of Marine Sciences, Hainan University, Haikou, Hainan, China
| | - Yan-Hua Zeng
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, Hainan, China
| | - Hai-Min Chen
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, Hainan, China
- Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, Hainan University, Haikou, Hainan, China
- College of Marine Sciences, Hainan University, Haikou, Hainan, China
| | - Na Zhang
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, Hainan, China
- Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, Hainan University, Haikou, Hainan, China
- College of Marine Sciences, Hainan University, Haikou, Hainan, China
| | - Yue Han
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, Hainan, China
- Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, Hainan University, Haikou, Hainan, China
- College of Marine Sciences, Hainan University, Haikou, Hainan, China
| | - Hao Long
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, Hainan, China
| | - Zhen-Yu Xie
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, Hainan, China
- Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, Hainan University, Haikou, Hainan, China
- College of Marine Sciences, Hainan University, Haikou, Hainan, China
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15
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Yi X, Xu X, Chen Y, Xu G, Zhu Z, Li H, Shen H, Lin M, Zhao W, Zheng J, Jiang X. Genetic analysis of Vibrio alginolyticus challenged by Fructus schisandrae reveals the mechanism of virulence genes. Gene 2023; 870:147421. [PMID: 37031882 DOI: 10.1016/j.gene.2023.147421] [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: 11/30/2022] [Revised: 03/21/2023] [Accepted: 04/04/2023] [Indexed: 04/11/2023]
Abstract
Due to the abusive use of antibiotics, bacterial resistance has become a global problem and poses severe threats to aquaculture. The drug-resistant diseases caused by Vibrio alginolyticus have caused significant economic losses to cultured marine fish. Fructus schisandrae is used to treat inflammatory diseases in China and Japan. There have been no reports of bacterial molecular mechanisms associated with F. schisandrae stress. In this study, the inhibiting effect of F. schisandrae on the growth of V. alginolyticus was detected to understand response mechanisms at the molecular level. The antibacterial tests were analyzed via next-generation deep sequencing technology (RNA sequencing, RNA-seq). Wild V. alginolyticus (CK) was compared with V. alginolyticus, F. schisandrae incubated for 2 h, and V. alginolyticus, F. schisandrae incubated for 4 h. Our results revealed that there were 582 genes (236 upregulated and 346 downregulated) and 1068 genes (376 upregulated and 692 downregulated), respectively. Differentially expressed genes (DEGs) were involved in the following functional categories: metabolic process, single-organism process, catalytic activity, cellular process, binding, membrane, cell part, cell, and localization. FS_2 h was compared with FS_4 h, and 21 genes (14 upregulated and 7 downregulated) were obtained. The RNA-seq results were validated by detecting the expression levels of 13 genes using quantitative real-time polymerase chain reaction (qRT-PCR). The qRT-PCR results matched those of the sequencing, which reinforced the reliability of the RNA-seq. The results revealed the transcriptional response of V. alginolyticus to F. schisandrae, which will provide new ideas for studying V. alginolyticus' complex virulence molecular mechanism and the possibility of developing Schisandra to prevent and treat drug-resistant diseases.
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Affiliation(s)
- Xin Yi
- Fisheries College, Jimei University, Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, Fujian Provincial Key Laboratory of Marine Fishery Resources and Eco-environment, Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fujian Province, Xiamen 361021, China
| | - XiaoJin Xu
- Fisheries College, Jimei University, Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, Fujian Provincial Key Laboratory of Marine Fishery Resources and Eco-environment, Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fujian Province, Xiamen 361021, China; Fujian Province Key Laboratory of Special Aquatic Formula Feed(Fujian Tianma Science and Technology Group Co., Ltd.)
| | - YuNong Chen
- Fisheries College, Jimei University, Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, Fujian Provincial Key Laboratory of Marine Fishery Resources and Eco-environment, Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fujian Province, Xiamen 361021, China; Fujian Province Key Laboratory of Special Aquatic Formula Feed(Fujian Tianma Science and Technology Group Co., Ltd.)
| | - Genhuang Xu
- Fisheries College, Jimei University, Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, Fujian Provincial Key Laboratory of Marine Fishery Resources and Eco-environment, Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fujian Province, Xiamen 361021, China
| | - ZhiQin Zhu
- Fisheries College, Jimei University, Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, Fujian Provincial Key Laboratory of Marine Fishery Resources and Eco-environment, Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fujian Province, Xiamen 361021, China
| | - Huiyao Li
- Fisheries Research Institute of Fujian, Xiamen 361013, China
| | - HaoYang Shen
- Fisheries College, Jimei University, Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, Fujian Provincial Key Laboratory of Marine Fishery Resources and Eco-environment, Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fujian Province, Xiamen 361021, China
| | - Mao Lin
- Fisheries College, Jimei University, Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, Fujian Provincial Key Laboratory of Marine Fishery Resources and Eco-environment, Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fujian Province, Xiamen 361021, China
| | - Wenyu Zhao
- Fisheries College, Jimei University, Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, Fujian Provincial Key Laboratory of Marine Fishery Resources and Eco-environment, Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fujian Province, Xiamen 361021, China
| | - Jiang Zheng
- Fisheries College, Jimei University, Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, Fujian Provincial Key Laboratory of Marine Fishery Resources and Eco-environment, Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fujian Province, Xiamen 361021, China
| | - XingLong Jiang
- Fisheries College, Jimei University, Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, Fujian Provincial Key Laboratory of Marine Fishery Resources and Eco-environment, Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fujian Province, Xiamen 361021, China.
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16
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Hernández-Sánchez C, Pestana-Ríos ÁA, Villanova-Solano C, Domínguez-Hernández C, Díaz-Peña FJ, Rodríguez-Álvarez C, Lecuona M, Arias Á. Bacterial Colonization of Microplastics at the Beaches of an Oceanic Island, Tenerife, Canary Islands. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:3951. [PMID: 36900968 PMCID: PMC10001659 DOI: 10.3390/ijerph20053951] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/17/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
(1) Isolated systems, such as oceanic islands, are increasingly experiencing important problems related to microplastic debris on their beaches. The formation of microbial biofilm on the surface of microplastics present in marine environments provides potential facilities for microorganisms to survive under the biofilm. Moreover, microplastics act as a vehicle for the dispersion of pathogenic organisms, constituting a new route of exposure for humans. (2) In this study, the microbial content (FIO and Vibrio spp. and Staphylococcus aureus) of microplastics (fragments and pellets) collected from seven beaches of the oceanic island of Tenerife, in the Canary Islands (Spain), was determined. (3) Results showed that Escherichia coli was present in 57.1% of the fragments and 28.5% of the pellets studied. In the case of intestinal Enterococci, 85.7% of the fragments and 57.1% of the pellets tested positive for this parameter. Finally, 100% of the fragments and 42.8% of the pellets analyzed from the different beaches contained Vibrio spp. (4) This study shows that microplastics act as reservoirs of microorganisms that can increase the presence of bacteria indicating faecal and pathogenic contamination in bathing areas.
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Affiliation(s)
- Cintia Hernández-Sánchez
- Department of Preventive Medicine and Public Health, Toxicology, Legal and Forensic Medicine and Parasitology, Health Science Faculty, University of La Laguna (ULL), Campus de Ofra s/n, 38071 Santa Cruz de Tenerife, Spain
- Institute of Tropical Diseases and Public Health of the Canary Islands, University of La Laguna (ULL), Avda, Astrofísico Fco. Sánchez, s/n°, 38206 San Cristóbal de La Laguna, Spain
| | - Ángel Antonio Pestana-Ríos
- Department of Preventive Medicine and Public Health, Toxicology, Legal and Forensic Medicine and Parasitology, Health Science Faculty, University of La Laguna (ULL), Campus de Ofra s/n, 38071 Santa Cruz de Tenerife, Spain
| | - Cristina Villanova-Solano
- Institute of Tropical Diseases and Public Health of the Canary Islands, University of La Laguna (ULL), Avda, Astrofísico Fco. Sánchez, s/n°, 38206 San Cristóbal de La Laguna, Spain
- Departmental Unit of Analytical Chemistry, Chemistry Department, Science Faculty, University of La Laguna (ULL), Avda Astrofísico Fco. Sánchez, s/n°, 38206 San Cristóbal de La Laguna, Spain
| | - Cristopher Domínguez-Hernández
- Institute of Tropical Diseases and Public Health of the Canary Islands, University of La Laguna (ULL), Avda, Astrofísico Fco. Sánchez, s/n°, 38206 San Cristóbal de La Laguna, Spain
- Departmental Unit of Analytical Chemistry, Chemistry Department, Science Faculty, University of La Laguna (ULL), Avda Astrofísico Fco. Sánchez, s/n°, 38206 San Cristóbal de La Laguna, Spain
| | - Francisco Javier Díaz-Peña
- Department of Animal Biology, Soil Science and Geology, Science Faculty, University of La Laguna (ULL), Avda, Astrofísico Fco. Sánchez, s/n°, 38206 San Cristóbal de La Laguna, Spain
| | - Cristobalina Rodríguez-Álvarez
- Department of Preventive Medicine and Public Health, Toxicology, Legal and Forensic Medicine and Parasitology, Health Science Faculty, University of La Laguna (ULL), Campus de Ofra s/n, 38071 Santa Cruz de Tenerife, Spain
| | - María Lecuona
- Microbiology and Infection Control Service of the University Hospital of the Canary Islands (HUC), 38071 Tenerife, Spain
| | - Ángeles Arias
- Department of Preventive Medicine and Public Health, Toxicology, Legal and Forensic Medicine and Parasitology, Health Science Faculty, University of La Laguna (ULL), Campus de Ofra s/n, 38071 Santa Cruz de Tenerife, Spain
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17
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Ren T, Liu J, Liu K, Zhang Z, Ma Z, Dan SF, Lan Z, Lu M, Fang H, Zhang Y, Zhu P, Liao Y. Cloning and expression of two anti-lipopolysaccharide factors in Eriocheir hepuensis under Vibrio alginolyticus-induced stress. JOURNAL OF FISH BIOLOGY 2023; 102:349-357. [PMID: 36317548 DOI: 10.1111/jfb.15261] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 10/29/2022] [Indexed: 06/16/2023]
Abstract
Anti-lipopolysaccharide factors (ALFs) are small basic proteins that exhibit broad-spectrum antiviral properties and antibacterial activity. In this research, we cloned and studied two Eriocheir hepuensis ALFs, EhALF2 and EhALF3. The results showed that the open reading frame lengths of EhALF2 and EhALF3 were 363 and 372 bp, encoding 120 and 123 amino acids, respectively. Their sequences both contained an Lipopolysaccharide-binding (LPS) domain and were highly similarity to other crab ALFs. qRT-PCR showed that EhALF2 and EhALF3 were detected in nine examined tissues and were expressed the highest in the haemocytes. After challenge with Vibrio alginolyticus, in the hepatopancreas, the expression levels of EhALF2 and EhALF3 reached the highest levels at 48 and 3 h, respectively. In the heart, the expression levels of the two genes were highest at 12 h. These results indicate that EhALF2 and EhALF3 could participate in the resistance of E. hepuensis to V. alginolyticus stress within a short time. They have potential applications in the study of environmental stress markers and disease-resistance factors in E. hepuensis.
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Affiliation(s)
| | - Jinxia Liu
- Beibu Gulf University, Qinzhou, Guangxi, China
| | - Ke Liu
- Beibu Gulf University, Qinzhou, Guangxi, China
- School of Marine Sciences, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, Guangxi, China
| | | | - Zihang Ma
- Beibu Gulf University, Qinzhou, Guangxi, China
| | | | - Zhenyu Lan
- Beibu Gulf University, Qinzhou, Guangxi, China
| | - Min Lu
- Beibu Gulf University, Qinzhou, Guangxi, China
| | - Huaiyi Fang
- Beibu Gulf University, Qinzhou, Guangxi, China
| | - Yan Zhang
- Beibu Gulf University, Qinzhou, Guangxi, China
| | - Peng Zhu
- Beibu Gulf University, Qinzhou, Guangxi, China
- School of Marine Sciences, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, Guangxi, China
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Castello A, Alio V, Sciortino S, Oliveri G, Cardamone C, Butera G, Costa A. Occurrence and Molecular Characterization of Potentially Pathogenic Vibrio spp. in Seafood Collected in Sicily. Microorganisms 2022; 11:microorganisms11010053. [PMID: 36677345 PMCID: PMC9866474 DOI: 10.3390/microorganisms11010053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/15/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022] Open
Abstract
Seafood can vehiculate foodborne illnesses from water to humans. Climate changes, increasing water contamination and coastlines anthropization, favor the global spread of Vibrio spp. and the occurrence of antibiotic-resistant isolates. The aim of this study was to evaluate the spread of potentially pathogenic Vibrio spp. in fishery products collected in Sicily and to assess their antibiotic resistance. Bacteriological and molecular methods were applied to 603 seafood samples to detect V. parahaemolyticus, V. cholerae, V. vulnificus, and Vibrio alginolyticus in order to assess their pathogenicity and antimicrobial resistance. About 30% of bivalves and 20% of other fishery products were contaminated by Vibrio spp.; V. parahaemolyticus accounted for 43/165 isolates, 3 of which were carrying either tdh or trh; V. cholerae accounted for 12/165 isolates, all of them non-O1 non-O139 and none carrying virulence genes; and V. vulnificus accounted for 5/165 isolates. The highest rates of resistance were observed for ampicillin, but we also detected strains resistant to antibiotics currently included among the most efficient against Vibrio spp. In spite of their current low incidence, their rise might pose further issues in treating infections; hence, these results stress the need for a continuous monitoring of antimicrobial resistance among fishery products and an effective risk assessment.
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The Detection of Foodborne Pathogenic Bacteria in Seafood Using a Multiplex Polymerase Chain Reaction System. Foods 2022; 11:foods11233909. [PMID: 36496717 PMCID: PMC9736724 DOI: 10.3390/foods11233909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/27/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
Multiplex polymerase chain reaction (PCR) assays are mainly used to simultaneously detect or identify multiple pathogenic microorganisms. To achieve high specificity for detecting foodborne pathogenic bacteria, specific primers need to be designed for the target strains. In this study, we designed and achieved a multiplex PCR system for detecting eight foodborne pathogenic bacteria using specific genes: toxS for Vibrio parahaemolyticus, virR for Listeria monocytogenes, recN for Cronobacter sakazakii, ipaH for Shigella flexneri, CarA for Pseudomonas putida, rfbE for Escherichia coli, vvhA for Vibrio vulnificus, and gyrB for Vibrio alginolyticus. The sensitivity of the single system in this study was found to be 20, 1.5, 15, 15, 13, 14, 17, and 1.8 pg for V. parahaemolyticus, L. monocytogenes, E. coli O157:H7, C. sakazakii, S. flexneri, P. putida, V. vulnificus, and V. alginolyticus, respectively. The minimum detection limit of the multiplex system reaches pg/μL detection level; in addition, the multiplex system exhibited good specificity and stability. Finally, the assays maintained good specificity and sensitivity of 104 CFU/mL for most of the samples and we used 176 samples of eight aquatic foods, which were artificially contaminated to simulate the detection of real samples. In conclusion, the multiplex PCR method is stable, specific, sensitive, and time-efficient. Moreover, the method is well suited for contamination detection in these eight aquatic foods and can rapidly detect pathogenic microorganisms.
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Hoefler F, Pouget-Abadie X, Roncato-Saberan M, Lemarié R, Takoudju EM, Raffi F, Corvec S, Le Bras M, Cazanave C, Lehours P, Guimard T, Allix-Béguec C. Clinical and Epidemiologic Characteristics and Therapeutic Management of Patients with Vibrio Infections, Bay of Biscay, France, 2001-2019. Emerg Infect Dis 2022; 28:2367-2373. [PMID: 36418019 PMCID: PMC9707594 DOI: 10.3201/eid2812.220748] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/29/2023] Open
Abstract
Noncholera vibriosis is a rare, opportunistic bacterial infection caused by Vibrio spp. other than V. cholerae O1/O139 and diagnosed mainly during the hot summer months in patients after seaside activities. Detailed knowledge of circulating pathogenic strains and heterogeneities in infection outcomes and disease dynamics may help in patient management. We conducted a multicenter case-series study documenting Vibrio infections in 67 patients from 8 hospitals in the Bay of Biscay, France, over a 19-year period. Infections were mainly caused by V. alginolyticus (34%), V. parahaemolyticus (30%), non-O1/O139 V. cholerae (15%), and V. vulnificus (10%). Drug-susceptibility testing revealed intermediate and resistant strains to penicillins and first-generation cephalosporins. The acute infections (e.g., those involving digestive disorder, cellulitis, osteitis, pneumonia, and endocarditis) led to a life-threatening event (septic shock), amputation, or death in 36% of patients. Physicians may need to add vibriosis to their list of infections to assess in patients with associated risk factors.
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Affiliation(s)
| | - Xavier Pouget-Abadie
- Centre Hospitalier La Rochelle, La Rochelle, France (F. Hoefler, X. Pouget-Abadie, M. Roncato-Saberan, R. Lemarié, C. Allix-Béguec)
- Centre Hospitalier Départemental Vendée, La Roche sur Yon, France (E.-M. Takoudju, T. Guimard)
- Centre Hospitalier Universitaire de Nantes, Nantes, France (F. Raffi, S. Corvec, M. Le Bras)
- Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France (C. Cazanave, P. Lehours)
| | - Mariam Roncato-Saberan
- Centre Hospitalier La Rochelle, La Rochelle, France (F. Hoefler, X. Pouget-Abadie, M. Roncato-Saberan, R. Lemarié, C. Allix-Béguec)
- Centre Hospitalier Départemental Vendée, La Roche sur Yon, France (E.-M. Takoudju, T. Guimard)
- Centre Hospitalier Universitaire de Nantes, Nantes, France (F. Raffi, S. Corvec, M. Le Bras)
- Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France (C. Cazanave, P. Lehours)
| | - Romain Lemarié
- Centre Hospitalier La Rochelle, La Rochelle, France (F. Hoefler, X. Pouget-Abadie, M. Roncato-Saberan, R. Lemarié, C. Allix-Béguec)
- Centre Hospitalier Départemental Vendée, La Roche sur Yon, France (E.-M. Takoudju, T. Guimard)
- Centre Hospitalier Universitaire de Nantes, Nantes, France (F. Raffi, S. Corvec, M. Le Bras)
- Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France (C. Cazanave, P. Lehours)
| | - Eve-Marie Takoudju
- Centre Hospitalier La Rochelle, La Rochelle, France (F. Hoefler, X. Pouget-Abadie, M. Roncato-Saberan, R. Lemarié, C. Allix-Béguec)
- Centre Hospitalier Départemental Vendée, La Roche sur Yon, France (E.-M. Takoudju, T. Guimard)
- Centre Hospitalier Universitaire de Nantes, Nantes, France (F. Raffi, S. Corvec, M. Le Bras)
- Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France (C. Cazanave, P. Lehours)
| | - François Raffi
- Centre Hospitalier La Rochelle, La Rochelle, France (F. Hoefler, X. Pouget-Abadie, M. Roncato-Saberan, R. Lemarié, C. Allix-Béguec)
- Centre Hospitalier Départemental Vendée, La Roche sur Yon, France (E.-M. Takoudju, T. Guimard)
- Centre Hospitalier Universitaire de Nantes, Nantes, France (F. Raffi, S. Corvec, M. Le Bras)
- Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France (C. Cazanave, P. Lehours)
| | - Stéphane Corvec
- Centre Hospitalier La Rochelle, La Rochelle, France (F. Hoefler, X. Pouget-Abadie, M. Roncato-Saberan, R. Lemarié, C. Allix-Béguec)
- Centre Hospitalier Départemental Vendée, La Roche sur Yon, France (E.-M. Takoudju, T. Guimard)
- Centre Hospitalier Universitaire de Nantes, Nantes, France (F. Raffi, S. Corvec, M. Le Bras)
- Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France (C. Cazanave, P. Lehours)
| | | | - Charles Cazanave
- Centre Hospitalier La Rochelle, La Rochelle, France (F. Hoefler, X. Pouget-Abadie, M. Roncato-Saberan, R. Lemarié, C. Allix-Béguec)
- Centre Hospitalier Départemental Vendée, La Roche sur Yon, France (E.-M. Takoudju, T. Guimard)
- Centre Hospitalier Universitaire de Nantes, Nantes, France (F. Raffi, S. Corvec, M. Le Bras)
- Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France (C. Cazanave, P. Lehours)
| | - Philippe Lehours
- Centre Hospitalier La Rochelle, La Rochelle, France (F. Hoefler, X. Pouget-Abadie, M. Roncato-Saberan, R. Lemarié, C. Allix-Béguec)
- Centre Hospitalier Départemental Vendée, La Roche sur Yon, France (E.-M. Takoudju, T. Guimard)
- Centre Hospitalier Universitaire de Nantes, Nantes, France (F. Raffi, S. Corvec, M. Le Bras)
- Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France (C. Cazanave, P. Lehours)
| | - Thomas Guimard
- Centre Hospitalier La Rochelle, La Rochelle, France (F. Hoefler, X. Pouget-Abadie, M. Roncato-Saberan, R. Lemarié, C. Allix-Béguec)
- Centre Hospitalier Départemental Vendée, La Roche sur Yon, France (E.-M. Takoudju, T. Guimard)
- Centre Hospitalier Universitaire de Nantes, Nantes, France (F. Raffi, S. Corvec, M. Le Bras)
- Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France (C. Cazanave, P. Lehours)
| | - Caroline Allix-Béguec
- Centre Hospitalier La Rochelle, La Rochelle, France (F. Hoefler, X. Pouget-Abadie, M. Roncato-Saberan, R. Lemarié, C. Allix-Béguec)
- Centre Hospitalier Départemental Vendée, La Roche sur Yon, France (E.-M. Takoudju, T. Guimard)
- Centre Hospitalier Universitaire de Nantes, Nantes, France (F. Raffi, S. Corvec, M. Le Bras)
- Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France (C. Cazanave, P. Lehours)
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Transposon insertion sequencing analysis unveils novel genes involved in luxR expression and quorum sensing regulation in Vibrio alginolyticus. Microbiol Res 2022; 267:127243. [DOI: 10.1016/j.micres.2022.127243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 10/20/2022] [Accepted: 10/24/2022] [Indexed: 11/13/2022]
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Marques PH, Prado LCDS, Felice AG, Rodrigues TCV, Pereira UDP, Jaiswal AK, Azevedo V, Oliveira CJF, Soares S. Insights into the Vibrio Genus: A One Health Perspective from Host Adaptability and Antibiotic Resistance to In Silico Identification of Drug Targets. Antibiotics (Basel) 2022; 11:1399. [PMID: 36290057 PMCID: PMC9598498 DOI: 10.3390/antibiotics11101399] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 10/08/2022] [Accepted: 10/08/2022] [Indexed: 11/23/2022] Open
Abstract
The genus Vibrio comprises an important group of ubiquitous bacteria of marine systems with a high infectious capacity for humans and fish, which can lead to death or cause economic losses in aquaculture. However, little is known about the evolutionary process that led to the adaptation and colonization of humans and also about the consequences of the uncontrollable use of antibiotics in aquaculture. Here, comparative genomics analysis and functional gene annotation showed that the species more related to humans presented a significantly higher amount of proteins associated with colonization processes, such as transcriptional factors, signal transduction mechanisms, and iron uptake. In comparison, those aquaculture-associated species possess a much higher amount of resistance-associated genes, as with those of the tetracycline class. Finally, through subtractive genomics, we propose seven new drug targets such as: UMP Kinase, required to catalyze the phosphorylation of UMP into UDP, essential for the survival of bacteria of this genus; and, new natural molecules, which have demonstrated high affinity for the active sites of these targets. These data also suggest that the species most adaptable to fish and humans have a distinct natural evolution and probably undergo changes due to anthropogenic action in aquaculture or indiscriminate/irregular use of antibiotics.
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Affiliation(s)
- Pedro Henrique Marques
- Department of Microbiology, Immunology and Parasitology, Federal University of Triângulo Mineiro, Uberaba 38025-180, MG, Brazil
| | - Lígia Carolina da Silva Prado
- Interunit Bioinformatics Post-Graduate Program, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
| | - Andrei Giacchetto Felice
- Department of Microbiology, Immunology and Parasitology, Federal University of Triângulo Mineiro, Uberaba 38025-180, MG, Brazil
| | | | - Ulisses de Padua Pereira
- Department of Preventive Veterinary Medicine, Londrina State University, Londrina 86057-970, PR, Brazil
| | - Arun Kumar Jaiswal
- Interunit Bioinformatics Post-Graduate Program, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
| | - Vasco Azevedo
- Department of Genetics, Ecology and Evolution, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
| | - Carlo José Freire Oliveira
- Department of Microbiology, Immunology and Parasitology, Federal University of Triângulo Mineiro, Uberaba 38025-180, MG, Brazil
| | - Siomar Soares
- Department of Microbiology, Immunology and Parasitology, Federal University of Triângulo Mineiro, Uberaba 38025-180, MG, Brazil
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Yin X, Zhuang X, Luo W, Liao M, Huang L, Cui Q, Huang J, Yan C, Jiang Z, Liu Y, Wang W. Andrographolide promote the growth and immunity of Litopenaeus vannamei, and protects shrimps against Vibrio alginolyticus by regulating inflammation and apoptosis via a ROS-JNK dependent pathway. Front Immunol 2022; 13:990297. [PMID: 36159825 PMCID: PMC9505992 DOI: 10.3389/fimmu.2022.990297] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 08/23/2022] [Indexed: 11/17/2022] Open
Abstract
Vibrio alginolyticus (V. alginolyticus) is one of the major pathogens causing mass mortality of shrimps worldwide, affecting energy metabolism, immune response and development of shrimps. In the context of the prohibition of antibiotics, it is necessary to develop a drug that can protect shrimp from V. alginolyticus. Andrographolide (hereinafter called Andr), a traditional drug used in Chinese medicine, which possesses diverse biological effects including anti-bacteria, antioxidant, immune regulation. In this study, we investigated the effect of Andr on growth, immunity, and resistance to V. alginolyticus infection of Litopenaeus vannamei (L. vannamei) and elucidate the underlying molecular mechanisms. Four diets were formulated by adding Andr at the dosage of 0 g/kg (Control), 0.5 g/kg, 1 g/kg, and 2 g/kg in the basal diet, respectively. Each diet was randomly fed to one group with three replicates of shrimps in a 4-week feeding trial. The results showed that dietary Andr improved the growth performance and non-specific immune function of shrimps. L. vannamei fed with Andr diets showed lower mortality after being challenged by V. alginolyticus. After 6 h of V. alginolyticus infection, reactive oxygen species (ROS) production, tissue injury, apoptosis, expression of inflammatory factors (IL-1 β and TNFα) and apoptosis-related genes (Bax, caspase3 and p53) were increased in hemocytes and hepatopancreas, while feeding diet with 0.5 g/kg Andr could inhibit the increase. Considering that JNK are important mediators of apoptosis, we examined the influence of Andr on JNK activity during V. alginolyticus infection. We found that Andr inhibited JNK activation induced by V. alginolyticus infection on L. vannamei. The ROS scavenger N-acetyl-l-cysteine (NAC) suppressed V. alginolyticus-induced inflammation and apoptosis, suggesting that ROS play an important role in V. alginolyticus-induced inflammation and apoptosis. Treated cells with JNK specific activator anisomycin, the inflammation and apoptosis inhibited by Andr were counteracted. Collectively, Andr promote the growth and immunity of L. vannamei, and protects shrimps against V. alginolyticus by regulating inflammation and apoptosis via a ROS-JNK dependent pathway. These results improve the understanding of the pathogenesis of V. alginolyticus infection and provide clues to the development of effective drugs against V. alginolyticus.
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Sheahan M, Gould CA, Neumann JE, Kinney PL, Hoffmann S, Fant C, Wang X, Kolian M. Examining the Relationship between Climate Change and Vibriosis in the United States: Projected Health and Economic Impacts for the 21st Century. ENVIRONMENTAL HEALTH PERSPECTIVES 2022; 130:87007. [PMID: 35983960 PMCID: PMC9422303 DOI: 10.1289/ehp9999a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
BACKGROUND This paper represents, to our knowledge, the first national-level (United States) estimate of the economic impacts of vibriosis cases as exacerbated by climate change. Vibriosis is an illness contracted through food- and waterborne exposures to various Vibrio species (e.g., nonV. cholerae O1 and O139 serotypes) found in estuarine and marine environments, including within aquatic life, such as shellfish and finfish. OBJECTIVES The objective of this study was to project climate-induced changes in vibriosis and associated economic impacts in the United States related to changes in sea surface temperatures (SSTs). METHODS For our analysis to identify climate links to vibriosis incidence, we constructed three logistic regression models by Vibrio species, using vibriosis data sourced from the Cholera and Other Vibrio Illness Surveillance system and historical SSTs. We relied on previous estimates of the cost-per-case of vibriosis to estimate future total annual medical costs, lost income from productivity loss, and mortality-related indirect costs throughout the United States. We separately reported results for V. parahaemolyticus, V. vulnificus, V. alginolyticus, and "V. spp.," given the different associated health burden of each. RESULTS By 2090, increases in SST are estimated to result in a 51% increase in cases annually relative to the baseline era (centered on 1995) under Representative Concentration Pathway (RCP) 4.5, and a 108% increase under RCP8.5. The cost of these illnesses is projected to reach $5.2 billion annually under RCP4.5, and $7.3 billion annually under RCP8.5, relative to $2.2 billion in the baseline (2018 U.S. dollars), equivalent to 140% and 234% increases respectively. DISCUSSION Vibriosis incidence is likely to increase in the United States under moderate and unmitigated climate change scenarios through increases in SST, resulting in a substantial burden of morbidity and mortality, and costing billions of dollars. These costs are mostly attributable to deaths, primarily from exposure to V. vulnificus. Evidence suggests that other factors, including sea surface salinity, may contribute to further increases in vibriosis cases in some regions of the United States and should also be investigated. https://doi.org/10.1289/EHP9999a.
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Affiliation(s)
- Megan Sheahan
- Industrial Economics, Inc., Cambridge, Massachusetts, USA
| | - Caitlin A. Gould
- U.S. Environmental Protection Agency, Washington, District of Columbia, USA
| | | | - Patrick L. Kinney
- Department of Environmental Health, School of Public Health, Boston University, Boston, Massachusetts, USA
| | - Sandra Hoffmann
- U.S. Department of Agriculture, Economic Research Service, Washington, District of Columbia, USA
| | - Charles Fant
- Industrial Economics, Inc., Cambridge, Massachusetts, USA
| | - Xinyue Wang
- Industrial Economics, Inc., Cambridge, Massachusetts, USA
| | - Michael Kolian
- U.S. Environmental Protection Agency, Washington, District of Columbia, USA
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Xue M, Huang X, Xue J, He R, Liang G, Liang H, Liu J, Wen C. Comparative Genomic Analysis of Seven Vibrio alginolyticus Strains Isolated From Shrimp Larviculture Water With Emphasis on Chitin Utilization. Front Microbiol 2022; 13:925747. [PMID: 35966654 PMCID: PMC9364117 DOI: 10.3389/fmicb.2022.925747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 06/22/2022] [Indexed: 11/30/2022] Open
Abstract
The opportunistic pathogen Vibrio alginolyticus is gaining attention because of its disease-causing risks to aquatic animals and humans. In this study, seven Vibrio strains isolated from different shrimp hatcheries in Southeast China were subjected to genome sequencing and subsequent comparative analysis to explore their intricate relationships with shrimp aquaculture. The seven isolates had an average nucleotide identity of ≥ 98.3% with other known V. alginolyticus strains. The species V. alginolyticus had an open pan-genome, with the addition of ≥ 161 novel genes following each new genome for seven isolates and 14 publicly available V. alginolyticus strains. The percentages of core genes of the seven strains were up to 83.1–87.5%, indicating highly conserved functions, such as chitin utilization. Further, a total of 14 core genes involved in the chitin degradation pathway were detected on the seven genomes with a single copy, 12 of which had undergone significant purifying selection (dN/dS < 1). Moreover, the seven strains could utilize chitin as the sole carbon-nitrogen source. In contrast, mobile genetic elements (MGEs) were identified in seven strains, including plasmids, prophages, and genomic islands, which mainly encoded accessory genes annotated as hypothetical proteins. The infection experiment showed that four of the seven strains might be pathogenic because the survival rates of Litopenaeus vannamei postlarvae were significantly reduced (P < 0.05) when compared to the control. However, no obvious correlation was noted between the number of putative virulence factors and toxic effects of the seven strains. Collectively, the persistence of V. alginolyticus in various aquatic environments may be attributed to its high genomic plasticity via the acquisition of novel genes by various MGEs. In view of the strong capability of chitin utilization by diverse vibrios, the timely removal of massive chitin-rich materials thoroughly in shrimp culture systems may be a key strategy to inhibit proliferation of vibrios and subsequent infection of shrimp. In addition, transcontinental transfer of potentially pathogenic V. alginolyticus strains should receive great attention to avoid vibriosis.
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Yin WL, Xie ZY, Zeng YH, Zhang J, Long H, Ren W, Zhang X, Cai XN, Huang AY. Two (p)ppGpp Synthetase Genes, relA and spoT, Are Involved in Regulating Cell Motility, Exopolysaccharides Production, and Biofilm Formation of Vibrio alginolyticus. Front Microbiol 2022; 13:858559. [PMID: 35422789 PMCID: PMC9002329 DOI: 10.3389/fmicb.2022.858559] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 02/28/2022] [Indexed: 12/14/2022] Open
Abstract
The stringent response mediated by the signal molecule (p)ppGpp is involved in response to multiple environmental stresses and control of various physiological processes. Studies have revealed that (p)ppGpp strongly affects the formation and maintenance of several bacterial biofilms. However, the specific regulatory roles of (p)ppGpp in biofilms, especially in the expression of genes related to cell motility and exopolysaccharides (EPSs) production, remain poorly understood. We recently reported two (p)ppGpp synthetase genes relA and spoT from the epizootic pathogen Vibrio alginolyticus. Herein, we found that the (p)ppGpp synthetase genes of V. alginolyticus contributed to biofilm formation at low cell density and biofilm detachment at high cell density, respectively, in polystyrene microtiter plates. Quantitative reverse transcription PCR (qRT-PCR) analysis revealed that the expression levels of both EPSs and motility associated genes were consistent with the development of biofilms. Besides, the (p)ppGpp synthetase gene spoT was found to be closely involved in the regulation of flagellum, smooth/translucent colony morphology and spotty pellicle at the air-liquid interface. Interestingly, pleiotropic phenotypes of ΔrelAΔspoT were similar to that of the rpoN (σ54) deletion mutant. Meanwhile, the absence of (p)ppGpp synthetase genes significantly reduced the expression levels of rpoN at low cell density, suggesting that (p)ppGpp may mediate the formation via positively affecting the alternative sigma factor RpoN. These findings allow us to propose (p)ppGpp as a crucial regulator for biofilm development in V. alginolyticus, in view of the regulatory roles of relA and spoT in cell motility and EPSs production.
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Affiliation(s)
- Wen-Liang Yin
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, China.,Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, China.,College of Marine Sciences, Hainan University, Haikou, China
| | - Zhen-Yu Xie
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, China.,Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, China.,College of Marine Sciences, Hainan University, Haikou, China.,Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Haikou, China
| | - Yan-Hua Zeng
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, China.,Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, China
| | - Ju Zhang
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, China.,Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, China.,College of Marine Sciences, Hainan University, Haikou, China
| | - Hao Long
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, China.,Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, China
| | - Wei Ren
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, China.,Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, China.,College of Marine Sciences, Hainan University, Haikou, China.,Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Haikou, China
| | - Xiang Zhang
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, China.,Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, China.,College of Marine Sciences, Hainan University, Haikou, China.,Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Haikou, China
| | - Xiao-Ni Cai
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, China.,Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, China.,College of Marine Sciences, Hainan University, Haikou, China.,Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Haikou, China
| | - Ai-You Huang
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, China.,Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, China.,College of Marine Sciences, Hainan University, Haikou, China.,Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Haikou, China
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Vibrio spp.: Life Strategies, Ecology, and Risks in a Changing Environment. DIVERSITY 2022. [DOI: 10.3390/d14020097] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Vibrios are ubiquitous bacteria in aquatic systems, especially marine ones, and belong to the Gammaproteobacteria class, the most diverse class of Gram-negative bacteria. The main objective of this review is to update the information regarding the ecology of Vibrio species, and contribute to the discussion of their potential risk in a changing environment. As heterotrophic organisms, Vibrio spp. live freely in aquatic environments, from marine depths to the surface of the water column, and frequently may be associated with micro- and macroalgae, invertebrates, and vertebrates such as fish, or live in symbiosis. Some Vibrio spp. are pathogenic to humans and animals, and there is evidence that infections caused by vibrios are increasing in the world. This rise may be related to global changes in human behavior (increases in tourism, maritime traffic, consumption of seafood, aquaculture production, water demand, pollution), and temperature. Most likely in the future, Vibrio spp. in water and in seafood will be monitored in order to safeguard human and animal health. Regulators of the microbiological quality of water (marine and freshwater) and food for human and animal consumption, professionals involved in marine and freshwater production chains, consumers and users of aquatic resources, and health professionals will be challenged to anticipate and mitigate new risks.
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Liu H, Xiao M, Zuo J, He X, Lu P, Li Y, Zhao Y, Xia F. Vanillic acid combats Vibrio alginolyticus by cell membrane damage and biofilm reduction. JOURNAL OF FISH DISEASES 2021; 44:1799-1809. [PMID: 34310732 DOI: 10.1111/jfd.13498] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/09/2021] [Accepted: 07/12/2021] [Indexed: 06/13/2023]
Abstract
Antibiotics are the most powerful weapon against bacterial infectious diseases in aquaculture. However, the indiscriminate usage of antibiotics often culminates in the emerging development of antibiotic-resistant bacteria, making it imperative to search for novel types of antimicrobial agents. This study investigated the antibacterial and antivirulence effects of vanillic acid (VA) against the fish pathogen, Vibrio alginolyticus. We showed that VA had a good anti-Vibrio activity with minimal inhibitory concentration (MIC) of 1.0 mg/ml. In addition, VA wielded its antibacterial action in a dose-/time-dependent manner by causing cell membrane damage and increasing membrane permeability, which is evidenced by increasing the conductivity and malondialdehyde content in the treated cell cultures and the scanning electron microscopy images. Furthermore, VA significantly reduced the biofilm-forming capability, mobility and exotoxin production (protease and exopolysaccharide) and downregulation of the expression of biofilm- and virulence-associated genes (sypG, fliS, fliK, lafA, lafK, asp and luxR) was seen in the V. alginolyticus that exposed to VA at subinhibitory concentrations. Overall, our findings suggested that VA may be of interest for treating V. alginolyticus-associated infections in aquaculture.
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Affiliation(s)
- Huan Liu
- School of Food and Biological Engineering, Shaanxi University of Science & Technology, Xi'an, China
- Shaanxi Research Institute of Agriculture Products Processing Technology, Xi'an, China
| | - Miao Xiao
- School of Food and Biological Engineering, Shaanxi University of Science & Technology, Xi'an, China
| | - Jing Zuo
- School of Food and Biological Engineering, Shaanxi University of Science & Technology, Xi'an, China
| | - Xiaoxian He
- School of Food and Biological Engineering, Shaanxi University of Science & Technology, Xi'an, China
| | - Ping Lu
- School of Food and Biological Engineering, Shaanxi University of Science & Technology, Xi'an, China
| | - Yingyu Li
- School of Food and Biological Engineering, Shaanxi University of Science & Technology, Xi'an, China
| | - Yanni Zhao
- School of Food and Biological Engineering, Shaanxi University of Science & Technology, Xi'an, China
- Shaanxi Research Institute of Agriculture Products Processing Technology, Xi'an, China
| | - Fei Xia
- School of Food and Biological Engineering, Shaanxi University of Science & Technology, Xi'an, China
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Roles of virulence regulator ToxR in viable but non-culturable formation by controlling reactive oxygen species resistance in pathogen Vibrio alginolyticus. Microbiol Res 2021; 254:126900. [PMID: 34700184 DOI: 10.1016/j.micres.2021.126900] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 09/08/2021] [Accepted: 10/21/2021] [Indexed: 02/08/2023]
Abstract
Under adverse circumstances, bacteria enter the viable but non-culturable (VBNC) state, a dormancy-like state for survival. The altered gene regulation underlying the entry of the VBNC state has not yet been well elucidated. Here, we reported that a subpopulation of cells (23.8 %) in Vibrio alginolyticus cultures enters the VBNC state in response to nutrient limitation at alkaline pH. The proteolysis of pivotal virulence regulator ToxR at these conditions is associated with VBNC formation. Meantime, ToxR abrogation impaired the mobility and the expression of virulence-associated genes, resulting in attenuated virulence in V. alginolyticus. RNA-seq and ChIP-seq analyses of the cells grown in VBNC-inducing conditions revealed that ToxR directly controls the expression of ∼8 genes including ahpC and dps involved in reactive oxygen species (ROS) resistance. ToxR binds to the promoter regions of kdgR, ppiC, ahpC, and dps and further controls their respective expression under oxidative stress conditions. The cells with impaired ToxR accumulated detrimental intracellular ROS. Moreover, these genes contribute to bacterial culturability as their in-frame deletion strains exhibiting severely decreased plate counts and the complementary strain showed rescued viability. Collectively, this study revealed the role of ToxR in switching on the VBNC state by sensing unfavorable environmental signals such as endogenous ROS (hydrogen peroxide, H2O2) in V. alginolyticus and provided mechanistic insights into Vibrio lifestyle adaptation in the marine environment.
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Yin WL, Zhang N, Xu H, Gong XX, Long H, Ren W, Zhang X, Cai XN, Huang AY, Xie ZY. Stress adaptation and virulence in Vibrio alginolyticus is mediated by two (p)ppGpp synthetase genes, relA and spoT. Microbiol Res 2021; 253:126883. [PMID: 34626929 DOI: 10.1016/j.micres.2021.126883] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/25/2021] [Accepted: 09/26/2021] [Indexed: 11/27/2022]
Abstract
Vibrio alginolyticus belongs to gram-negative opportunistic pathogen realm infecting humans and aquatic animals causing severe economic losses. The (p)ppGpp-mediated stringent response is corroborated to stress adaptation and virulence of pathogenic mechanisms. Limited reports are documented for the intricate assessment of (p)ppGpp synthetase genes in combating various stress adaptation and elucidation of virulence in V. alginolyticus remains unraveled. The present assessment comprises of generation of deletion mutants in the (p)ppGpp-deficient strains, ΔrelA (relA gene single mutant) and ΔrelAΔspoT (relA and spoT genes double mutant), and the complemented strains, ΔrelA+ and ΔrelAΔspoT+, were constructed to investigate the pivotal roles of (p)ppGpp synthetase genes in V. alginolyticus, respectively. Amino acid sequence alignment analysis initially revealed that RelA and SpoT possess relatively conserved domains and synthetase activity. Hydrolase activity was emancipated by SpoT alone showing variant mode of action. Compared with the wild type and complemented strains, the relA-deficient strain was more sensitive to amino acid starvation and mupirocin. Interestingly, the deletion of spoT resulted in a significant growth deficiency supplemented with bile salts, 3 % ethanol and heat shock. Rapid growth was observed in the stationary phase upon exposure to cold stress and lower doses of ethanol. Subsequently, disruption of (p)ppGpp synthetase genes caused the decline in swimming motility, enhanced biofilm formation, cell aggregation of V. alginolyticus, and reduced mortality of Litopenaeus vannamei. The expression levels of some virulence-associated genes were quantified affirming consistency established by pleiotropic phenotypes. The results are evident for putative roles of (p)ppGpp synthetase genes attributing essential roles for environmental adaption and virulence regulation in V. alginolyticus.
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Affiliation(s)
- Wen-Liang Yin
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, PR China; Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, 570228, Hainan Province, PR China; College of Marine Sciences, Hainan University, Haikou, 570228, Hainan Province, PR China
| | - Na Zhang
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, PR China; Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, 570228, Hainan Province, PR China; College of Marine Sciences, Hainan University, Haikou, 570228, Hainan Province, PR China
| | - He Xu
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, PR China; Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, 570228, Hainan Province, PR China; College of Marine Sciences, Hainan University, Haikou, 570228, Hainan Province, PR China
| | - Xiao-Xiao Gong
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, PR China; Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, 570228, Hainan Province, PR China; College of Marine Sciences, Hainan University, Haikou, 570228, Hainan Province, PR China
| | - Hao Long
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, PR China; Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, 570228, Hainan Province, PR China
| | - Wei Ren
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, PR China; Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, 570228, Hainan Province, PR China; Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Haikou, Hainan, 570228, PR China; College of Marine Sciences, Hainan University, Haikou, 570228, Hainan Province, PR China
| | - Xiang Zhang
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, PR China; Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, 570228, Hainan Province, PR China; Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Haikou, Hainan, 570228, PR China; College of Marine Sciences, Hainan University, Haikou, 570228, Hainan Province, PR China
| | - Xiao-Ni Cai
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, PR China; Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, 570228, Hainan Province, PR China; Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Haikou, Hainan, 570228, PR China; College of Marine Sciences, Hainan University, Haikou, 570228, Hainan Province, PR China
| | - Ai-You Huang
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, PR China; Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, 570228, Hainan Province, PR China; Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Haikou, Hainan, 570228, PR China; College of Marine Sciences, Hainan University, Haikou, 570228, Hainan Province, PR China
| | - Zhen-Yu Xie
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, PR China; Laboratory of Development and Utilization of Marine Microbial Resource, Hainan University, Haikou, 570228, Hainan Province, PR China; Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Haikou, Hainan, 570228, PR China; College of Marine Sciences, Hainan University, Haikou, 570228, Hainan Province, PR China.
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31
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Zhou W, Li Y, Li Z, Ma B, Jiang X, Hu C, Ai Y, Luo P. Genomic Changes and Genetic Divergence of Vibrio alginolyticus Under Phage Infection Stress Revealed by Whole-Genome Sequencing and Resequencing. Front Microbiol 2021; 12:710262. [PMID: 34671325 PMCID: PMC8521149 DOI: 10.3389/fmicb.2021.710262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Accepted: 09/14/2021] [Indexed: 11/13/2022] Open
Abstract
Bacteriophages (phages) and their bacterial hosts were the most abundant and genetically highly diverse organisms on the earth. In this study, a series of phage-resistant mutant (PRM) strains derived from Vibrio alginolyticus were isolated and Infrequent-restriction-site PCR (IRS-PCR) was used to investigate the genetic diversity of the PRM strains. Phenotypic variations of eight PRM strains were analyzed using profiles of utilizing carbon sources and chemical sensitivity. Genetic variations of eight PRM strains and coevolved V. alginolyticus populations with phages were analyzed by whole-genome sequencing and resequencing, respectively. The results indicated that eight genetically discrepant PRM stains exhibited abundant and abundant phenotypic variations. Eight PRM strains and coevolved V. alginolyticus populations (VE1, VE2, and VE3) contained numerous single nucleotide variations (SNVs) and insertions/indels (InDels) and exhibited obvious genetic divergence. Most of the SNVs and InDels in coding genes were related to the synthesis of flagellar, extracellular polysaccharide (EPS), which often served as the receptors of phage invasion. The PRM strains and the coevolved cell populations also contained frequent mutations in tRNA and rRNA genes. Two out of three coevolved populations (VE1 and VE2) contained a large mutation segment severely deconstructing gene nrdA, which was predictably responsible for the booming of mutation rate in the genome. In summary, numerous mutations and genetic divergence were detected in the genomes of V. alginolyticus PRM strains and in coevolved cell populations of V. alginolyticus under phage infection stress. The phage infection stress may provide an important force driving genomic evolution of V. alginolyticus.
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Affiliation(s)
- Wenjie Zhou
- College of Animal Science, Jilin University, Changchun, China
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology (LMB), Guangdong Provincial Key Laboratory of Applied Marine Biology (LAMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Yingying Li
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology (LMB), Guangdong Provincial Key Laboratory of Applied Marine Biology (LAMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
- Geological Survey Institute of Guangzhou, Guangzhou, China
| | - Zhuobo Li
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology (LMB), Guangdong Provincial Key Laboratory of Applied Marine Biology (LAMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Bo Ma
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology (LMB), Guangdong Provincial Key Laboratory of Applied Marine Biology (LAMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xiao Jiang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology (LMB), Guangdong Provincial Key Laboratory of Applied Marine Biology (LAMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
| | - Chaoqun Hu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology (LMB), Guangdong Provincial Key Laboratory of Applied Marine Biology (LAMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
| | - Yongxing Ai
- College of Animal Science, Jilin University, Changchun, China
| | - Peng Luo
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology (LMB), Guangdong Provincial Key Laboratory of Applied Marine Biology (LAMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
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32
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Wang R, Hu X, Deng Y, Gooneratne R. Effect of Food Matrix Type on Growth Characteristics of and Hemolysin Production by Vibrio alginolyticus. J Food Prot 2021; 84:1411-1420. [PMID: 33836066 DOI: 10.4315/jfp-20-490] [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: 12/21/2020] [Accepted: 04/06/2021] [Indexed: 11/11/2022]
Abstract
ABSTRACT The growth of and hemolysin production by two V. alginolyticus strains (HY9901 and ATCC 17749T) at 30°C were investigated in briny tilapia, shrimp, scallop, oyster, pork, chicken, freshwater fish, and egg fried rice. Bacteria were enumerated by plate counting. Hemolysin production was evaluated with blood agar and hemolytic titer tests. The two V. alginolyticus strains had similar growth and hemolysin production patterns in all tested foods. Based on the goodness-of-fit primary model statistics (coefficient of determination, mean square error, bias factor, and accuracy factor), the modified Gompertz model was a better fit than the logistic model to V. alginolyticus growth in foods. Growth kinetic parameters of V. alginolyticus had a higher μmax and shorter λ in the following order: briny tilapia > shrimp > freshwater fish > egg fried rice > scallop > oyster > chicken > pork. V. alginolyticus levels were similar at the stationary phase, with no significant growth difference between raw and cooked foods. Significantly higher thermostable direct hemolysin activity (P < 0.05) was found for V. alginolyticus in the following order: briny tilapia > freshwater fish > shrimp > chicken > egg fried rice > scallop > oyster > pork. However, the hemolytic titer was not consistent with the thermostable direct hemolysin activity and was significantly higher (P < 0.05) in the following order: briny tilapia > egg fried rice > shrimp > freshwater fish > chicken > scallop > oyster > pork. Contrary to current belief, V. alginolyticus produced more hemolysin in some nonseafoods (freshwater fish, egg fried rice, and chicken) than in scallops or oysters. This report is the first on the growth and toxicity of V. alginolyticus in different food matrices and confirms that some nonseafoods can be contaminated with pathogenic V. alginolyticus. These results should increase awareness of nonseafood safety issues and improve the accuracy of V. alginolyticus risk assessments. HIGHLIGHTS
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Affiliation(s)
- Rundong Wang
- College of Food Science and Engineering, Lingnan Normal University, Zhanjiang, People's Republic of China
| | - Xiaojun Hu
- College of Food Science and Engineering, Lingnan Normal University, Zhanjiang, People's Republic of China
| | - Yijia Deng
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, People's Republic of China
| | - Ravi Gooneratne
- Department of Wine, Food and Molecular Biosciences, Faculty of Agriculture and Life Sciences, Lincoln University, Lincoln 7647, Canterbury, New Zealand
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Prevalence, detection of virulence genes and antimicrobial susceptibility of pathogen Vibrio species isolated from different types of seafood samples at "La Nueva Viga" market in Mexico City. Antonie van Leeuwenhoek 2021; 114:1417-1429. [PMID: 34255280 DOI: 10.1007/s10482-021-01591-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 04/30/2021] [Indexed: 12/19/2022]
Abstract
Some Vibrio species are important human pathogens owing to they cause infectious diseases such as gastroenteritis, wound infections, septicemia or even death. Many of these illnesses are associated with consumption of contaminated seafood. In the present study, we evaluated the presence of pathogenic Vibrio species, their virulence and antimicrobial susceptibility from 285 different kind of seafood samples from "La Nueva Viga" market in Mexico City. The PCR assay was used for amplification the vppC (collagenase), vmh (hemolysin), tlh (thermolabile hemolysin), and vvhA (hemolytic cytolysin) genes that are specific to Vibrio alginolyticus (detected in 27%), Vibrio mimicus (23.2%), Vibrio parahaemolyticus (28.8%) and Vibrio vulnificus (21.1%), respectively. Several genes encoding virulence factors were amplified. These included V. alginolyticus: pvuA (17.9%), pvsA (50%), wza and lafA (100%); V. mimicus: iut A (60%), toxR (100%); V. parahaemolyticus: pvuA (58.7%), pvsA (26.1%), wza (2.2%), and lafA (100%); and V. vulnificus: wcrA (77.5%), gmhD (57.5%), lafA (100%) and motA (30%). The antibiotic susceptibility of the Vibrio species isolates revealed that most of them were resistant to ampicillin, cephalothin and carbenicillin but susceptible to pefloxacin and trimethoprim-sulfamethoxazole. Our results indicated a high prevalence of pathogenic Vibrio species in seafood, a high presence of virulence genes and that Vibrio species continuously exposed to antibiotics, therefore, consumption of these kind of seafood carries a potential risk for foodborne illness.
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Arab S, Nalbone L, Giarratana F, Berbar A. Vibrio spp. in Wild and Farmed Mytilus galloprovincialis along the Algerian Mediterranean Coast: Evidence of V. cholerae 01 Serotype Ogawa. JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY 2021. [DOI: 10.1080/10498850.2021.1936326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Sonia Arab
- Institut des Sciences Vétérinaires, Laboratoire de Recherche de Biotechnologies Liées À la Reproduction Animale, University of Saad Dahlab - Blida, Blida, Algeria
| | - Luca Nalbone
- Department of Veterinary Sciences, University of Messina, Polo Universitario dell’Annunziata, Messina, Italy
| | - Filippo Giarratana
- Department of Veterinary Sciences, University of Messina, Polo Universitario dell’Annunziata, Messina, Italy
| | - Ali Berbar
- Institut des Sciences Vétérinaires, Laboratoire de Recherche de Biotechnologies Liées À la Reproduction Animale, University of Saad Dahlab - Blida, Blida, Algeria
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Li J, Tian F, Hu Y, Lin W, Liu Y, Zhao F, Ren H, Pan Q, Shi T, Tong Y. Characterization and Genomic Analysis of BUCT549, a Novel Bacteriophage Infecting Vibrio alginolyticus With Flagella as Receptor. Front Microbiol 2021; 12:668319. [PMID: 34220752 PMCID: PMC8245777 DOI: 10.3389/fmicb.2021.668319] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 05/14/2021] [Indexed: 11/28/2022] Open
Abstract
Vibrio alginolyticus is one of the most important of pathogens that can infect humans and a variety of aquatic animals, and it can cause food poisoning and septicemia in humans. Widely used antibiotics are gradually losing their usefulness, and phages are gaining more attention as new antibacterial strategies. To have more potential strategies for controlling pathogenic bacteria, we isolated a novel V. alginolyticus phage BUCT549 from seafood market sewage. It was classified as a new member of the family Siphoviridae by transmission electron microscopy and a phylogenetic tree. We propose creating a new genus for BUCT549 based on the intergenomic similarities (maximum is 56%) obtained from VIRIDIC calculations. Phage BUCT549 could be used for phage therapy due to its stability in a wide pH (3.0–11.0) range and high-temperature (up to 60°C) environment. It had a latent period of 30–40 min and a burst size of 141 PFU/infected bacterium. In the phylogenetic tree based on a terminase large subunit, BUCT549 was closely related to eight Vibrio phages with different species of host. Meanwhile, our experiments proved that BUCT549 has the ability to infect a strain of Vibrio parahaemolyticus. A coevolution experiment determined that three strains of tolerant V. alginolyticus evaded phage infestation by mutating the MSHA-related membrane protein expression genes, which caused the loss of flagellum. This research on novel phage identification and the mechanism of infestation will help phages to become an integral part of the strategy for biological control agents.
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Affiliation(s)
- Jing Li
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Fengjuan Tian
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Yunjia Hu
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Wei Lin
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Yujie Liu
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Feiyang Zhao
- Qingdao Phagepharm Bio-tech Co., Ltd., Shandong, China
| | - Huiying Ren
- Qingdao Phagepharm Bio-tech Co., Ltd., Shandong, China
| | - Qiang Pan
- Qingdao Phagepharm Bio-tech Co., Ltd., Shandong, China
| | - Taoxing Shi
- Academy of Military Medical Sciences, Beijing, China
| | - Yigang Tong
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China
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Zhang J, Liu B, Gu D, Hao Y, Chen M, Ma Y, Zhou X, Reverter D, Zhang Y, Wang Q. Binding site profiles and N-terminal minor groove interactions of the master quorum-sensing regulator LuxR enable flexible control of gene activation and repression. Nucleic Acids Res 2021; 49:3274-3293. [PMID: 33693882 PMCID: PMC8034623 DOI: 10.1093/nar/gkab150] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 02/19/2021] [Accepted: 02/23/2021] [Indexed: 12/19/2022] Open
Abstract
LuxR is a TetR family master quorum sensing (QS) regulator activating or repressing expression of hundreds of genes that control collective behaviors in Vibrios with underlying mechanism unknown. To illuminate how this regulator controls expression of various target genes, we applied ChIP-seq and DNase I-seq technologies. Vibrio alginolyticus LuxR controls expression of ∼280 genes that contain either symmetric palindrome (repDNA) or asymmetric (actDNA) binding motifs with different binding profiles. The median number of LuxR binding sites for activated genes are nearly double for that of repressed genes. Crystal structures of LuxR in complex with the respective repDNA and actDNA motifs revealed a new mode of LuxR DNA binding that involves contacts of its N-terminal extension to the minor groove. The N-terminal contacts mediated by Arginine-9 and Arginine-11 differ when LuxR binds to repDNA vs actDNA, leading to higher binding affinity at repressed targets. Moreover, modification of LuxR binding sites, binding profiles, and N-terminal extension have important consequences on QS-regulated phenotypes. These results facilitate fundamental understanding of the high flexibility of mechanisms of LuxR control of gene activation and repression in Vibrio QS, which may facilitate to design QS inhibiting chemicals that interfere with LuxR regulation to effectively control pathogens.
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Affiliation(s)
| | | | | | - Yuan Hao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Mo Chen
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yue Ma
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaohui Zhou
- Department of Pathobiology and Veterinary Science, University of Connecticut, Storrs, CT 06269, USA
| | - David Reverter
- Correspondence may also be addressed to David Reverter. Tel: +34 93 5868955;
| | - Yuanxing Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), 519000 Zhuhai, China
- Shanghai Engineering Research Center of Maricultured Animal Vaccines, Shanghai, China
| | - Qiyao Wang
- To whom correspondence should be addressed. Tel: +86 21 64253306;
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Zhang N, Zhang S, Ren W, Gong X, Long H, Zhang X, Cai X, Huang A, Xie Z. Roles of rpoN in biofilm formation of Vibrio alginolyticus HN08155 at different cell densities. Microbiol Res 2021; 247:126728. [PMID: 33684638 DOI: 10.1016/j.micres.2021.126728] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 01/14/2021] [Accepted: 02/13/2021] [Indexed: 11/18/2022]
Abstract
RpoN (δ54) as a global regulator controls crucialvirulence-associated phenotype, which can regulate flagellum and exopolysaccharides (EPS) during pathogenic biofilm formation. However, the knowledge of the roles of rpoN in biofilm formation of V. alginolyticus is limited, especially at different cell densities. Herein, deletion mutant strain ΔrpoN, complementary strain ΔrpoN-C and negative control strain ΔrpoN-Z were constructed to investigate the effects of rpoN on biofilm formation of V. alginolyticus HN08155 based on flagellum and EPS at different cell density conditions. The results showed that all of strains can form biofilm, and biofilms of strains with rpoN were formed at low cell density (LCD) and detached at high cell density (HCD), while those of ΔrpoN and ΔrpoN-Z were absent at LCD and accumulated excessively with a spotty pellicle at HCD without detaching. The EPS contents of strains with rpoN was greater than that of ΔrpoN and ΔrpoN-Z at LCD, while the opposite trends were observed at HCD. The expression levels of rpoN were quantified, which were consistent with the trend of biofilm formation. It's worth noting that absence of rpoN resulted in the failure of biofilm detachment, lacking of flagellum and decreasing motility, indicating that rpoN was not necessary for biofilm formation, but it was essential for biofilm detachment.
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Affiliation(s)
- Na Zhang
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, China; College of Marine Sciences, Hainan University, Haikou, 570228, Hainan Province, China
| | - Shun Zhang
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, China; College of Marine Sciences, Hainan University, Haikou, 570228, Hainan Province, China
| | - Wei Ren
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, China; Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, Hainan University, Haikou, 570228, Hainan Province, China; College of Marine Sciences, Hainan University, Haikou, 570228, Hainan Province, China
| | - Xiaoxiao Gong
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, China; College of Marine Sciences, Hainan University, Haikou, 570228, Hainan Province, China
| | - Hao Long
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, China
| | - Xiang Zhang
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, China; Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, Hainan University, Haikou, 570228, Hainan Province, China; College of Marine Sciences, Hainan University, Haikou, 570228, Hainan Province, China
| | - Xiaoni Cai
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, China; Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, Hainan University, Haikou, 570228, Hainan Province, China; College of Marine Sciences, Hainan University, Haikou, 570228, Hainan Province, China
| | - Aiyou Huang
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, China; Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, Hainan University, Haikou, 570228, Hainan Province, China; College of Marine Sciences, Hainan University, Haikou, 570228, Hainan Province, China
| | - Zhenyu Xie
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, Hainan Province, China; Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, Hainan University, Haikou, 570228, Hainan Province, China; College of Marine Sciences, Hainan University, Haikou, 570228, Hainan Province, China.
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38
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Complete genome analysis of an active prophage of Vibrio alginolyticus. Arch Virol 2021; 166:891-896. [PMID: 33454862 DOI: 10.1007/s00705-020-04941-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 11/12/2020] [Indexed: 01/21/2023]
Abstract
An active prophage, Vibrio phage ValM-yong1, was isolated from pathogenic Vibrio alginolyticus by mitomycin C induction. This phage is a member of the family Myoviridae and contains a head approximately 90 nm in diameter and a retractable tail approximately 250 nm in length. The genome of the phage is 33,851 bp in length with a G+C content of 45.6%. The noteworthy features of Vibrio phage ValM-yong1 are its flower-like head and genomic mosaicism. Here, we focus on presenting the genomic characterization of the virus.
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Yasir M, Ullah R, Bibi F, Khan SB, Al-Sofyani AA, Stingl U, Azhar EI. Draft genome sequence of a multidrug-resistant emerging pathogenic isolate of Vibrio alginolyticus from the Red Sea. New Microbes New Infect 2020; 38:100804. [PMID: 33294196 PMCID: PMC7683337 DOI: 10.1016/j.nmni.2020.100804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 10/21/2020] [Accepted: 10/27/2020] [Indexed: 11/13/2022] Open
Abstract
The marine ecosystem is a growing reservoir of antimicrobial-resistant bacteria, and thus an emerging risk to human health. In this study, we report the first draft genome sequence of multidrug-resistant Vibrio alginolyticus strain OS1T-47, isolated from an offshore site in the Red Sea. The draft genome of V. alginolyticus OS1T-47 is 5 157 150 bp in length and has DNA G + C content of 44.83%. Strain OS1T-47 possesses 22 antimicrobial resistance genes, including those associated with multidrug-resistant efflux pumps.
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Affiliation(s)
- M Yasir
- Special Infectious Agents Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia.,Medical Laboratory Technology Department, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - R Ullah
- Special Infectious Agents Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
| | - F Bibi
- Special Infectious Agents Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia.,Medical Laboratory Technology Department, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - S Bahadar Khan
- Department of Chemistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - A A Al-Sofyani
- Marine Biology Department, Faculty of Marine Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - U Stingl
- UF/IFAS Fort Lauderdale Research & Education Center, Department of Microbiology & Cell Science, University of Florida, Davie, FL, USA
| | - E I Azhar
- Special Infectious Agents Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia.,Medical Laboratory Technology Department, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
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40
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Li L, Su YB, Peng B, Peng XX, Li H. Metabolic mechanism of colistin resistance and its reverting in Vibrio alginolyticus. Environ Microbiol 2020; 22:4295-4313. [PMID: 32291842 DOI: 10.1111/1462-2920.15021] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 04/12/2020] [Indexed: 12/17/2022]
Abstract
Colistin is a last-line antibiotic against Gram-negative multidrug-resistant bacteria, but the increased resistance poses a huge challenge to this drug. However, the mechanisms underlying such resistance are largely unexplored. The present study first identified the mutations of two genes encoding AceF subunit of pyruvate dehydrogenase (PDH) and TetR family transcriptional regulator in colistin-resistant Vibrio alginolyticus (VA-RCT ) through genome sequencing. Then, gas chromatography-mass spectroscopy-based metabolomics was adopted to investigate metabolic responses since PDH plays a role in central carbon metabolism. Colistin resistance was associated with the reduction of the central carbon metabolism and energy metabolism, featuring the alteration of the pyruvate cycle, a recently characterized energy-producing cycle. Metabolites in the pyruvate cycle reprogramed colistin-resistant metabolome to colistin-sensitive metabolome, resulting in increased gene expression, enzyme activity or protein abundance of the cycle and sodium-translocating nicotinamide adenine dinucleotide-ubiquinone oxidoreductase. This reprogramming promoted the production of the proton motive force that enhances the binding between colistin and lipid A in lipopolysaccharide. Moreover, this metabolic approach was effective against VA-RCT in vitro and in vivo as well as other clinical isolates. These findings reveal a previously unknown mechanism of colistin resistance and develop a metabolome-reprogramming approach to promote colistin efficiency to combat with colistin-resistant bacteria.
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Affiliation(s)
- Lu Li
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, 510006, China
| | - Yu-Bin Su
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, 510006, China
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Department of Biotechnology, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Bo Peng
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, 510006, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China
| | - Xuan-Xian Peng
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, 510006, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
| | - Hui Li
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, 510006, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
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41
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Wu P, Zhou S, Su Z, Liu C, Zeng F, Pang H, Xie M, Jian J. Functional characterization of T3SS C-ring component VscQ and evaluation of its mutant as a live attenuated vaccine in zebrafish (Danio rerio) model. FISH & SHELLFISH IMMUNOLOGY 2020; 104:123-132. [PMID: 32473362 DOI: 10.1016/j.fsi.2020.05.063] [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: 01/19/2020] [Revised: 05/02/2020] [Accepted: 05/23/2020] [Indexed: 06/11/2023]
Abstract
Vibrio alginolyticus, a Gram-negative bacterium, has been recognized as an opportunistic pathogen in marine animals as well as humans. Type III secretion system (T3SS) is critical for pathogen virulence and disease development. However, no more information is known about the C-ring component VscQ and its physiological role. In this study, gene vscQ was cloned from V. alginolyticus wild-type strain HY9901 and the mutant strain HY9901ΔvscQ was constructed by the in-frame deletion method. The HY9901ΔvscQ mutant showed an attenuated swarming phenotype and a closely 4.6-fold decrease in the virulence to Danio rerio. However, the HY9901ΔvscQ mutant showed no difference in growth, biofilm formation and ECPase activity. HY9901ΔvscQ reduces the release of LDH, NO and caspase-3 activity of infected FHM cell, which are involved in fish cell apoptosis. Deletion of gene vscQ downregulates the expression level of T3SS-related genes including vscL, vopB, hop, vscO, vscK, vopD, vcrV and vopS and flagellum-related genes (flaA and fliG). And Danio rerio vaccinated via i.m injection with HY9901ΔvscQ induced a relative percent survival (RPS) value of 71% after challenging with the wild-type HY9901. Real-time PCR assays showed that vaccination with HY9901ΔvscQ enhanced the expression of immune-related genes, including TNF-α, TLR5, IL-6R, IgM and c/ebpβ in liver and spleen after vaccination, indicating that it is able to induce humoral and cell-mediated immune response in zebrafish. These results demonstrate that the HY9901ΔvscQ mutant could be used as an effective live vaccine to combat V. alginolyticus infection.
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Affiliation(s)
- Peiwen Wu
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang, 524025, China; Fisheries College of Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang 524025, China; Guangdong Key Laboratory of Control for Diseases of Aquatic Economic Animals, Zhanjiang, 524025, China
| | - Shihui Zhou
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang, 524025, China; Fisheries College of Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang 524025, China; Guangdong Key Laboratory of Control for Diseases of Aquatic Economic Animals, Zhanjiang, 524025, China
| | - Zehui Su
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang, 524025, China; Fisheries College of Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang 524025, China; Guangdong Key Laboratory of Control for Diseases of Aquatic Economic Animals, Zhanjiang, 524025, China
| | - Chang Liu
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang, 524025, China; Fisheries College of Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang 524025, China; Guangdong Key Laboratory of Control for Diseases of Aquatic Economic Animals, Zhanjiang, 524025, China
| | - Fuyuan Zeng
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang, 524025, China; Fisheries College of Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang 524025, China; Guangdong Key Laboratory of Control for Diseases of Aquatic Economic Animals, Zhanjiang, 524025, China
| | - Huanying Pang
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang, 524025, China; Fisheries College of Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang 524025, China; Guangdong Key Laboratory of Control for Diseases of Aquatic Economic Animals, Zhanjiang, 524025, China; Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
| | - Miao Xie
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang, 524025, China; Fisheries College of Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang 524025, China; Guangdong Key Laboratory of Control for Diseases of Aquatic Economic Animals, Zhanjiang, 524025, China
| | - Jichang Jian
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang, 524025, China; Fisheries College of Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang 524025, China; Guangdong Key Laboratory of Control for Diseases of Aquatic Economic Animals, Zhanjiang, 524025, China; Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
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42
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Shen S, Wu W, Grimes DJ, Saillant EA, Griffitt RJ. Community composition and antibiotic resistance of bacteria in bottlenose dolphins Tursiops truncatus - Potential impact of 2010 BP Oil Spill. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 732:139125. [PMID: 32438143 DOI: 10.1016/j.scitotenv.2020.139125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 04/28/2020] [Accepted: 04/28/2020] [Indexed: 06/11/2023]
Abstract
Aquatic contamination, oil spills in particular, could lead to the accumulation of antibiotic resistance by promoting selection for and/or transfer of resistance genes. However, there have been few studies on antibiotic resistance in marine mammals in relation to environmental disturbances, specifically oil contaminations. Here we initiated a study on antibiotic resistance bacteria in bottlenose dolphins Tursiops truncatus in relation to oil contamination following the 2010 BP Oil Spill in the northern Gulf of Mexico. Bacterial communities and antibiotic resistance prevalence one year after the 2010 BP Oil Spill were compared between Barataria Bay (BB) and Sarasota Bay (SB) by applying the rarefaction curve method, and (generalized) linear mixed models. The results showed that the most common bacteria included Vibrio, Shewanella, Bacillus and Pseudomonas. The prevalence of antibiotic resistance was high in the bacterial isolates at both bays. Though bacterial diversity did not differ significantly among water or dolphin samples, and antibiotic resistance did not differ significantly among water samples between the two bays, antibiotic resistance and multi-drug resistance in dolphin samples was significantly higher in the BB than in the SB, mainly attributed to the resistance to E, CF, FEP and SXT. We also found sulfamethoxazole-trimethoprim-resistant Stenotrophomonas maltophilia the first time in the natural aquatic environment. The higher antibiotic resistance in the dolphins in BB is likely attributed to 2010 BP Oil Spill as we expected SB, a more urbanized bay area, would have had higher antibiotic resistance based on the previous studies. The antibiotic resistance data gathered in this research will fill in the important data gaps and contributes to the broader spatial-scale emerging studies on antibiotic resistance in aquatic environments.
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Affiliation(s)
- Shuo Shen
- Division of Coastal Sciences, School of Ocean Science and Engineering, The University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, MS 39564, United States of America.
| | - Wei Wu
- Division of Coastal Sciences, School of Ocean Science and Engineering, The University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, MS 39564, United States of America.
| | - D Jay Grimes
- Division of Coastal Sciences, School of Ocean Science and Engineering, The University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, MS 39564, United States of America.
| | - Eric A Saillant
- Division of Coastal Sciences, School of Ocean Science and Engineering, The University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, MS 39564, United States of America.
| | - Robert J Griffitt
- Division of Coastal Sciences, School of Ocean Science and Engineering, The University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, MS 39564, United States of America.
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43
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Lucero-Mejía JE, Romero-Gómez SDJ, Hernández-Iturriaga M. A new classification criterion for the biofilm formation index: A study of the biofilm dynamics of pathogenic Vibrio species isolated from seafood and food contact surfaces. J Food Sci 2020; 85:2491-2497. [PMID: 32654171 DOI: 10.1111/1750-3841.15325] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 04/29/2020] [Accepted: 05/18/2020] [Indexed: 12/12/2022]
Abstract
The bacterial biofilm formation index (BFI) is measured by a microtiter plate assay, and it is typically performed at 72 hr. However, the dynamics of biopolymer formation change during this incubation period. The aims of this study were to follow the biofilm formation dynamics of Vibrio strains isolated from samples of seafood and food contact surfaces (FCS) and to propose a new BFI classification criterion. Samples from seafood (136) and FCS (14) were collected from retail markets in Queretaro, Mexico. The presence of Vibrio spp. was determined, the strains were isolated, and the six major pathogenic species (V. cholerae, V. alginolyticus, V. fluvialis, V. parahaemolyticus, V. vulnificus, V. mimicus) were identified by PCR. The BFI of the isolates was determined by the microtiter plate method. Fifty-one strains were isolated and identified as V. alginolytivcus (25), V. vulnificus (12), V. cholerae (7), V. parahaemolyticus (6), and V. mimicus (1). A quantitative classification criterion of biofilm formation was proposed based on the following factors: BFI dynamics (no formation, continuous increase, and increase followed by decrease), time of maximum BFI (early: 24 hr; late: 48 to 72 hr), and degree of BFI (none, weak, moderate, and strong). A numerical value was assigned to each factor to correlate the resulting BFI profile with a risk level. Thirteen BFI profiles were observed, having risk level values from 0 to 10. Vibrio alginolyticus, V. cholerae, and V. vulnificus showed the highest BFI profile diversities, which included the riskiest profiles. The proposed BFI criterion describes the dynamics of bacterial biopolymer formation and associates them with the possible risk implications. PRACTICAL APPLICATION: In food processing environments, the presence of bacterial biofilms that could include foodborne pathogens might favor cross-contamination due to direct contact or biofilm dispersal into food products. The new quantitative classification criterion for biofilm formation considers their production dynamics over time, the biofilm quantity, and the level of biofilm dispersal. These characteristics are represented by a numerical value that reflects the level of risk associated with the presence of a biofilm-producing strain on a food contact surface.
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Affiliation(s)
- José Eduardo Lucero-Mejía
- Departamento de Investigación y Posgrado en Alimentos, Facultad de Química, Universidad Autónoma de Querétaro, Querétaro, México
| | - Sergio de Jesús Romero-Gómez
- Departamento de Investigación y Posgrado en Alimentos, Facultad de Química, Universidad Autónoma de Querétaro, Querétaro, México
| | - Montserrat Hernández-Iturriaga
- Departamento de Investigación y Posgrado en Alimentos, Facultad de Química, Universidad Autónoma de Querétaro, Querétaro, México
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Xie ZY, Gong XX, Xu XD, Mei B, Xuan XZ, Long H, Zhang X, Cai XN. Identification of Vibrio alginolyticus virulent strain-specific DNA regions by suppression subtractive hybridization and PCR. J Appl Microbiol 2020; 129:1472-1485. [PMID: 32510751 DOI: 10.1111/jam.14739] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 05/23/2020] [Accepted: 06/02/2020] [Indexed: 12/25/2022]
Abstract
AIMS Vibrio alginolyticus was frequently isolated from diseased farmed fish in the coaster waters of Hainan Island over the past two decades. In this study, we attempted to identify candidates of virulent strain-specific DNA regions for this pathogen. METHODS AND RESULTS Suppression subtractive hybridization (SSH) and PCR were successively performed between the typical virulent strain and avirulent strain of V. alginolyticus, in which they shared 99·54% homology of 16S rDNAs. Out of 2873 subtracted clones, nine clones were finally indicated to harbour virulent strain-specific DNA fragments. The receivable functions of the major fragments in the nine clones were believed to encode methyl-accepting chemotaxis protein (n = 1), type VI secretion system-associated FHA domain protein TagH (n = 1), diguanylate cyclase (n = 1), AraC family transcriptional regulator (n = 1), ABC-type uncharacterized transport system permease component (n = 1) and hypothetical proteins (n = 4). Two hypothetical proteins contain several disordered regions. CONCLUSIONS Some specific DNA regions existed in the virulent strain of V. alginolyticus, and the SSH assay could be a highly sensitive method for identifying virulent regions in pathogens. SIGNIFICANCE AND IMPACT OF THE STUDY This report is the first to describe the identification of virulent strain-specific DNA regions in the V. alginolyticus genome, which is helpful in developing virulent strain-specific rapid detection methods and is a pivotal precondition for clarifying the molecular virulence mechanism of V. alginolyticus.
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Affiliation(s)
- Z-Y Xie
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, Hainan Province, China.,Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, Hainan University, Haikou, Hainan Province, China.,College of Marine Sciences, Hainan University, Haikou, Hainan Province, China
| | - X-X Gong
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, Hainan Province, China.,Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, Hainan University, Haikou, Hainan Province, China.,College of Marine Sciences, Hainan University, Haikou, Hainan Province, China
| | - X-D Xu
- College of Marine Sciences, Hainan University, Haikou, Hainan Province, China
| | - B Mei
- College of Marine Sciences, Hainan University, Haikou, Hainan Province, China
| | - X-Z Xuan
- College of Marine Sciences, Hainan University, Haikou, Hainan Province, China
| | - H Long
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, Hainan Province, China
| | - X Zhang
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, Hainan Province, China.,Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, Hainan University, Haikou, Hainan Province, China.,College of Marine Sciences, Hainan University, Haikou, Hainan Province, China
| | - X-N Cai
- State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, Hainan Province, China.,Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, Hainan University, Haikou, Hainan Province, China.,College of Marine Sciences, Hainan University, Haikou, Hainan Province, China
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45
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Zhang S, Yang MJ, Peng B, Peng XX, Li H. Reduced ROS-mediated antibiotic resistance and its reverting by glucose in Vibrio alginolyticus. Environ Microbiol 2020; 22:4367-4380. [PMID: 32441046 DOI: 10.1111/1462-2920.15085] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 05/13/2020] [Indexed: 01/16/2023]
Abstract
Antibiotic-resistant Vibrio alginolyticus poses a big challenge to human health and food safety. It is urgently needed to understand the mechanisms underlying antibiotic resistance to develop effective approaches for the control. Here we explored the metabolic difference between gentamicin-resistant V. alginolyticus (VA-RGEN ) and gentamicin-sensitive V. alginolyticus (VA-S), and found that the reactive oxygen species (ROS) generation was altered. Compared with VA-S, the ROS content in VA-RGEN was reduced due to the decreased generation and increased breakdown of ROS. The decreased production of ROS was attributed to the decreased central carbon metabolism, which is associated with the resistance to gentamicin. As such a mechanism, we exogenously administrated VA-RGEN with the glucose that activated the central carbon metabolism and promoted the generation of ROS, but decreased the breakdown of ROS in VA-RGEN . The gentamicin-mediated killing was increased with the elevation of the ROS level by a synergistic effect between gentamicin and exogenous glucose. The synergistic effect was inhibited by thiourea, a scavenger of ROS. These results reveal a reduced ROS-mediated antibiotic resistance mechanism and its reversal by exogenous glucose.
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Affiliation(s)
- Song Zhang
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, 510006, China
| | - Man-Jun Yang
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, 510006, China
| | - Bo Peng
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, 510006, China.,Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China
| | - Xuan-Xian Peng
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, 510006, China.,Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
| | - Hui Li
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, 510006, China.,Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
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46
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Zago V, Veschetti L, Patuzzo C, Malerba G, Lleo MM. Shewanella algae and Vibrio spp. strains isolated in Italian aquaculture farms are reservoirs of antibiotic resistant genes that might constitute a risk for human health. MARINE POLLUTION BULLETIN 2020; 154:111057. [PMID: 32174504 DOI: 10.1016/j.marpolbul.2020.111057] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/28/2020] [Accepted: 03/07/2020] [Indexed: 05/27/2023]
Abstract
The aquatic environment can represent a reservoir of antimicrobial resistance genes. In the present study, phenotypical, biochemical and molecular techniques were used to screen a collection of marine strains isolated in Italian aquaculture farms to investigate their beta-lactam resistance profiles. The genome of 12 carbapenemase and/or beta-lactamase producing strains was sequenced and a phylogenetic analysis of the beta-lactamases found in their chromosomes was performed. Gene annotation and prediction revealed the presence of blaAmpC and blaOXA-55-like in all the Shewanella algae isolates whereas in Vibrio anguillarum and Vibrio parahaemolyticus strains, blaAmpC and blaCARB-19 were found, respectively. Multiple alignments of OXA-55-like and AmpC protein sequences showed different point mutations. Finally, comparisons between enzyme phylogeny and strain clusterization based on sampling sites and dates indicate the diffusion of specific Multi Drug Resistant (MDR) Shewanella algae clones along the Italian Adriatic coast.
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Affiliation(s)
- Vanessa Zago
- Department of Diagnostics and Public Health, University of Verona, Italy
| | - Laura Veschetti
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Italy
| | - Cristina Patuzzo
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Italy
| | - Giovanni Malerba
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Italy
| | - Maria M Lleo
- Department of Diagnostics and Public Health, University of Verona, Italy.
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47
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Zago V, Veschetti L, Patuzzo C, Malerba G, Lleo MM. Resistome, Mobilome and Virulome Analysis of Shewanella algae and Vibrio spp. Strains Isolated in Italian Aquaculture Centers. Microorganisms 2020; 8:microorganisms8040572. [PMID: 32326629 PMCID: PMC7232470 DOI: 10.3390/microorganisms8040572] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/02/2020] [Accepted: 04/13/2020] [Indexed: 12/27/2022] Open
Abstract
Antimicrobial resistance is a major public health concern restricted not only to healthcare settings but also to veterinary and environmental ones. In this study, we analyzed, by whole genome sequencing (WGS) the resistome, mobilome and virulome of 12 multidrug-resistant (MDR) marine strains belonging to Shewanellaceae and Vibrionaceae families collected at aquaculture centers in Italy. The results evidenced the presence of several resistance mechanisms including enzyme and efflux pump systems conferring resistance to beta-lactams, quinolones, tetracyclines, macrolides, polymyxins, chloramphenicol, fosfomycin, erythromycin, detergents and heavy metals. Mobilome analysis did not find circular elements but class I integrons, integrative and conjugative element (ICE) associated modules, prophages and different insertion sequence (IS) family transposases. These mobile genetic elements (MGEs) are usually present in other aquatic bacteria but also in Enterobacteriaceae suggesting their transferability among autochthonous and allochthonous bacteria of the resilient microbiota. Regarding the presence of virulence factors, hemolytic activity was detected both in the Shewanella algae and in Vibrio spp. strains. To conclude, these data indicate the role as a reservoir of resistance and virulence genes in the environment of the aquatic microbiota present in the examined Italian fish farms that potentially might be transferred to bacteria of medical interest.
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Affiliation(s)
- Vanessa Zago
- Department of Diagnostics and Public Health, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy;
| | - Laura Veschetti
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy; (L.V.); (C.P.); (G.M.)
| | - Cristina Patuzzo
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy; (L.V.); (C.P.); (G.M.)
| | - Giovanni Malerba
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy; (L.V.); (C.P.); (G.M.)
| | - Maria M. Lleo
- Department of Diagnostics and Public Health, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy;
- Correspondence: ; Tel.: +39-045-802-7194
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48
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Froelich BA, Daines DA. In hot water: effects of climate change on Vibrio-human interactions. Environ Microbiol 2020; 22:4101-4111. [PMID: 32114705 DOI: 10.1111/1462-2920.14967] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/25/2020] [Accepted: 02/27/2020] [Indexed: 02/06/2023]
Abstract
Sea level rise and the anthropogenic warming of the world's oceans is not only an environmental tragedy, but these changes also result in a significant threat to public health. Along with coastal flooding and the encroachment of saltwater farther inland comes an increased risk of human interaction with pathogenic Vibrio species, such as Vibrio cholerae, V. vulnificus and V. parahaemolyticus. This minireview examines the current literature for updates on the climatic changes and practices that impact the location and duration of the presence of Vibrio spp., as well as the infection routes, trends and virulence factors of these highly successful pathogens. Finally, an overview of current treatments and methods for the mitigation of both oral and cutaneous exposures are presented.
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Affiliation(s)
- Brett A Froelich
- Department of Biology, George Mason University, 10900 University Boulevard, Manassas, VA, 20110
| | - Dayle A Daines
- College of Sciences, Office of the Dean, Old Dominion University, Norfolk, VA, 23529
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49
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Characteristics and complete genome sequence of the virulent Vibrio alginolyticus phage VAP7, isolated in Hainan, China. Arch Virol 2020; 165:947-953. [PMID: 32130520 DOI: 10.1007/s00705-020-04535-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 12/27/2019] [Indexed: 02/08/2023]
Abstract
A novel Vibrio alginolyticus phage, VAP7, was isolated from seawater collected from Sanya, Hainan province, China. Whole-genome sequencing analysis revealed that phage VAP7 has a linear, double-stranded DNA genome of 144,685 bp with an average G+C content of 41.9% and a high degree of sequence similarity to Vibrio phage VP-1. Annotation results identified 193 open reading frames and one transfer RNA-encoding gene in the phage genome. The morphology and the results of phylogenetic analysis suggest that VAP7 should be classified as a new member of the family Ackermannviridae. Moreover, phage VAP7 grew over a wide pH (5.0-10.0) and temperature (4-40 °C) range. Host-range experiments revealed that VAP7 could infect 31 Vibrio alginolyticus strains. Thus, VAP7 infecting Vibrio alginolyticus strains represents a potential new candidate for use in phage therapy.
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50
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Cintrón M, O'Sullivan B, Babady NE, Tang YW. Vibrio cholera and V. parahaemolyticus coinfection in an oncology patient with gastroenteritis. Diagn Microbiol Infect Dis 2019; 96:114927. [PMID: 31740171 DOI: 10.1016/j.diagmicrobio.2019.114927] [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: 09/27/2019] [Revised: 10/28/2019] [Accepted: 10/31/2019] [Indexed: 10/25/2022]
Abstract
Vibrio-related gastroenteritis in the United States is mostly associated with the consumption of raw or improperly cooked seafood. We describe a case of a stage IV lung adenocarcinoma patient who became ill after eating crab while visiting Upstate New York. Molecular testing and culture confirmed a coinfection with V. parahaemolyticus and a nontoxigenic strain V. cholera.
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Affiliation(s)
- Melvilí Cintrón
- Clinical Microbiology Service, Department of Laboratory Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York, USA
| | - Barbara O'Sullivan
- Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York, USA; Rockefeller University Hospital, New York, New York, USA
| | - N Esther Babady
- Clinical Microbiology Service, Department of Laboratory Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York, USA; Infectious Diseases Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York, USA
| | - Yi-Wei Tang
- Clinical Microbiology Service, Department of Laboratory Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York, USA; Infectious Diseases Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York, USA; Department of Pathology and Laboratory Medicine, Weill Medical College of Cornell University, New York, New York, USA.
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