Identification of Vibrio Anguillarum and Vibrio Ordalii by a Monoclonal Antibody Coagglutination Assay

Total Page:16

File Type:pdf, Size:1020Kb

Identification of Vibrio Anguillarum and Vibrio Ordalii by a Monoclonal Antibody Coagglutination Assay Louisiana State University LSU Digital Commons LSU Historical Dissertations and Theses Graduate School 1990 Identification of Vibrio Anguillarum and Vibrio Ordalii by a Monoclonal Antibody Coagglutination Assay. Zhongshi Wang Louisiana State University and Agricultural & Mechanical College Follow this and additional works at: https://digitalcommons.lsu.edu/gradschool_disstheses Recommended Citation Wang, Zhongshi, "Identification of Vibrio Anguillarum and Vibrio Ordalii by a Monoclonal Antibody Coagglutination Assay." (1990). LSU Historical Dissertations and Theses. 5024. https://digitalcommons.lsu.edu/gradschool_disstheses/5024 This Dissertation is brought to you for free and open access by the Graduate School at LSU Digital Commons. It has been accepted for inclusion in LSU Historical Dissertations and Theses by an authorized administrator of LSU Digital Commons. For more information, please contact [email protected]. INFORMATION TO USERS The most advanced technology has been used to photograph and reproduce this manuscript from the microfilm master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter face, while others may be from any type of computer printer. The quality of this reproduction is dependent upon the quality of the copysubmitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversely affect reproduction. In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion. Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand corner and continuing from left to right in equal sections with small overlaps. Each original is also photographed in one exposure and is included in reduced form at the back of the book. Photographs included in the original manuscript have been reproduced xerographically in this copy. Higher quality 6" x 9" black and white photographic prints are available for any photographs or illustrations appearing in this copy for an additional charge. Contact UMI directly to order. University Microfilms International A Bell & Howell Information Company 300 North Zeeb Road. Ann Arbor. Ml 48106-1346 USA 313-761-4700 800/521-0600 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. Order Number 9112271 Identification ofVibrio anguillarum and Vibrio ordalii by a monoclonal antibody coagglutination assay Wang, Zhongshi, Ph.D. The Louisiana State University and Agricultural and Mechanical Col., 1990 UMI 300 N. Zeeb Rd. Ann Arbor, MI 48106 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. IDENTIFICATION OF VIBRIO ANGUILLARUM AND VIBRIO ORDALII BY A MONOCLONAL ANTIBODY COAGGLUTINATION ASSAY A dissertation Submitted to the Graduate Faculty of the Louisiana State University and Agricultural and Mechanical College in partial fulfillment of the requirements for the degree of Doctor of Philosophy in The Department of Microbiology by Zhongshi Wang B.M., Beijing Medical University, 1983 Beijing, China Aug,1990 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. DEDICATION To my parents, brothers, and sisters. ii Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. ACKNOWLEDGEMENT I would like to express thanks and sincere appreciation to Dr. R.J. Siebeling for giving me the opportunity to pursue graduate studies in Microbiology and for his patience, helpful direction, continuous support throughout the course of this research and the assistance in the preparation of this dissertation. I would like to express sincere appreciation to Dr. L.T. Hart, V.R. Srinivasan, E.C. Achberger and to my minor professor Dr. E.S. Younathan for countless examples of advice, support and patience. I also express sincere gratitude to the members of Dr. Siebeling's research group for their friendships. I would like to thank Cindy Henk for helping me to prepare the slides for my oral presentations. iii Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. Table of Contents Page Dedication.......................................... ii Acknowledgement...... iii Table of Contents................................... iv List of Tables....................................... Abstract............................................ ix Introduction......................................... 1 Chapter I Production of Species Specific Anti-H Monoclonal Antibodies Against Vibrio anguillarum and Vibrio Ordalii......... 20 Introduction........................... 21 Materials and Methods.................. 29 Results and Discussion................. 47 Chapter II Serological Identification of Vibrio anguillarum and Vibrio ordalii by Using Lipopolysaccharide (0) Antigens......... 65 Introduction.................. 66 Materials and Methods................. 75 Resultes and Discussion................89 Literature Cited.................................. 131 Vita............................................. 147 iv Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. LIST OF TABLE Table Chapter I. la. Vibrio anguillarum and Vibrio ordalii strains used in serological assays throught this study........................ 30 lb. Heterologous Vibrio species used in this study..................................... 32 2. Isotype of monoclonal antibodies reactive against flagellar core protein of V. anguillarum and V. ordalii....... 48 3. Serological reactivity of six anti-MAbs examined by ELISA, with flagellar core proteins prepared from 10-serogroups of V. anguillarum and V. ordalii strains (Larsen 0-scheme).......................... 50 4. H-antigen relationships among Vibrio fish pathogens, examined by ELISA with anti-V. anguillarum and anti-V. ordalii H monoclonal antibodies (MAbs)............. 52 5. Coagglutination patterns for two affinity-purified anti-V. ordalii flagella monoclonal antibodies. Antibodies eluted from protein-A Sepharose armed with 10% S.. aureus........................ 54 6a. Serological reactivity of anti-V. ordalii H MAbs examined by coagglutination reaction. Anti-H coagglutination reagent tested against 10 V. anguillarum O-serotypes obtained from Denmark...................... 56 6b. Serological reactivity of anti-V. ordalii H MAbs examined by coagglutination reaction. Anti-H coagglutination reagent tested against V. anguillarum isolated from taiwan................................ 57 6c. Serological reactivity of anti-V. ordalii H MAbs examined by coagglutination reaction. Anti-H coagglutination reagent tested against V. anguillaxrum isolated from Japan................................. 58 v Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. 6d. Serological reactivity of anti-V. ordalii H MAbs examined by coagglutination reaction. Anti-H coagglutination reagent tested against heterologous Vibrio fish pathogens or Vibrio species which might share H antigen determinants............................... 59 7. Serological survey by Vibrio anguillarum and Vibrio ordalii isolated diseased fishes or marine environment and other Vibrio species by coagglutination with reagents armed with anti-V. ordalii H MAbs..................... 61 Chapter II 1. A summary and comparision of five serotyping systems for V. anguillarum based on cell wall (0) associated lipopolysaccharide antigens: Correlation of 0-antigen nomenclature................................ 68 2. Origin and source of the bacterial strains used in this study.......................... 76 3. Schedule of immunization for preparation of rabbit antiserum...... 82 4. Direct slide agglutination (DSA) and passive hemagglutination (PHA) titers for rabbit anti-0 sera produced against each of the 10 Danish V. anguillarum O-serotypes and tested against vaccine strains........... 91 5. Agglutination patterns for 10 anti-V. anguillarum sera raised in rabbits immunized with heat-killed whole cell vaccines and tested against homologous vaccine strains and heterologous vaccine strains.................................... 92 6a. Agglutination patterns for 10 different anti- V. anguillarum sera raised in rabbits immunized with heat-killed whole cell vaccines and tested against V. anguillarum strains isolated from Taiwan........................ 94 vi Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. 6b. Agglutination patterns for 10 different anti- V. anguillarum sera raised in rabbits immunized with heat-killed whole cell vaccines and tested against V. anguillarum strains isolated from Japan............ 95 6c. Agglutination patterns for 10 different anti- V. anguillarum sera raised in rabbits immunized with heat-killed whole cell vaccines and tested against V. anguillarum strains isolated from America...................... 97 6d. Serological examination of other than V. anguillarum and V. ordalii vibrios isolates by direct-immune
Recommended publications
  • Exploring the Transcriptome of Luxi- and &Dgr;Ains Mutants and the Impact of N-3-Oxo-Hexanoyl-L
    - Exploring the transcriptome of luxI and DainS mutants and the impact of N-3-oxo-hexanoyl-L- and N-3-hydroxy- decanoyl-L-homoserine lactones on biofilm formation in Aliivibrio salmonicida Miriam Khider1, Hilde Hansen1, Erik Hjerde1,2, Jostein A. Johansen1 and Nils Peder Willassen1,2 1 Norwegian Structural Biology Centre, Department of Chemistry, Faculty of Science and Technology, UiT—The Arctic University of Norway, Tromsø, Norway 2 Centre for Bioinformatics, Department of Chemistry, Faculty of Science and Technology, UiT—The Arctic University of Norway, Tromsø, Norway ABSTRACT Background: Bacterial communication through quorum sensing (QS) systems has been reported to be important in coordinating several traits such as biofilm formation. In Aliivibrio salmonicida two QS systems the LuxI/R and AinS/R, have been shown to be responsible for the production of eight acyl-homoserine lactones (AHLs) in a cell density dependent manner. We have previously demonstrated that inactivation of LitR, the master regulator of the QS system resulted in biofilm - formation, similar to the biofilm formed by the AHL deficient mutant DainSluxI . In this study, we aimed to investigate the global gene expression patterns of luxI and ainS autoinducer synthases mutants using transcriptomic profiling. In addition, we examined the influence of the different AHLs on biofilm formation. - Results: The transcriptome profiling of DainS and luxI mutants allowed us to identify genes and gene clusters regulated by QS in A. salmonicida. Relative to the - wild type, the DainS and luxI mutants revealed 29 and 500 differentially expressed 21 December 2018 Submitted genes (DEGs), respectively. The functional analysis demonstrated that the most Accepted 18 March 2019 Published 30 April 2019 pronounced DEGs were involved in bacterial motility and chemotaxis, Corresponding author exopolysaccharide production, and surface structures related to adhesion.
    [Show full text]
  • Bacterial Dormancy: a Subpopulation of Viable but Non-Culturable Cells Demonstrates Better Fitness for Revival
    bioRxiv preprint doi: https://doi.org/10.1101/2020.07.23.216283; this version posted July 23, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. Bacterial dormancy: a subpopulation of viable but non-culturable cells demonstrates better fitness for revival. Sariqa Wagley1*, Helen Morcrette1, Andrea Kovacs-Simon1, Zheng R. Yang1, Ann Power2, Richard K. Tennant2, John Love2, Neil Murray3, Richard W. Titball1 and Clive S. Butler1* 1 Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, Devon, EX4 4QD, UK 2 BioEconomy Centre, The Henry Wellcome Building for BioCatalysis, Biosciences, Stocker Road, Exeter, Devon, EX4 4QD, UK 3 Lyons Seafoods, Fairfield House, Fairfield Road, Warminster, Wiltshire, BA12 9DA. *Corresponding authors: [email protected]; [email protected] Key words: Viable but non culturable cells, Vibrio parahaemolyticus, FACS, IFC, Proteomics Running title: characterisation of subpopulations of VBNC cells bioRxiv preprint doi: https://doi.org/10.1101/2020.07.23.216283; this version posted July 23, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. Abstract: The viable but non culturable (VBNC) state is a condition in which bacterial cells are viable and metabolically active, but resistant to cultivation using a routine growth medium.
    [Show full text]
  • Pathogenicity Studies on a Vibrio Anguillarum- Related (VAR) Strain Causing an Epizootic in Argopecten Purpuratus Larvae Cultured in Chile
    DISEASES OF AQUATIC ORGANISMS Vol. 22: 135-141,1995 Published June 15 Dis aqua1 Org l Pathogenicity studies on a Vibrio anguillarum- related (VAR)strain causing an epizootic in Argopecten purpuratus larvae cultured in Chile 'Departamento de Acuicultura. Facultad de Recursos del Mar, Universidad de Antofagasta, PO Box 170, Antofagasta, Chile 'Departamento de Microbiologia y Parasitologia, Facultad de Biologia, Universidad de Santiago de Compostela, E-15706 Santiago de Compostela, Spain ABSTRACT: A Vibrio anguillarum-related (VAR) strain, isolated in pure culture from an epizootic in a commercial hatchery producing Argopecten purpuratus, was characterized, and its potential patho- genicity to veliger larvae of A. purpuratus determined. Experimental challenges indicated that the bac- terium affects larval survival at concentrations of 104 to 108 cells ml-l The effect of water quality and temperature on pathogenicity was also evaluated. Larval survival in seawater filtered through 5 pm pore-size membranes was 45.6%, whereas using seawater passed through 1 and 0.2pm filters, larval survival increased to 66.4 and 80.4% respectively. Temperature also affected pathogenicity as larval survival at 15OC for 24 h was 69.3% but decreased to 30 and 26.9 % at 20 and 25°C respectively. Toxic activity was found in cell-free supernatant of bacterial culture. Larval survival was reduced to 68.9 and 36.4% after 20 and 40% (v/v) of supernatant, respectively, was added to the rearing water. These results suggest that exotoxins produced by the VAR strain play an in~portantrole in its pathogenicity for scallop larvae. KEY WORDS: Argopecten purpuratus - Larvae . Vibrio anguillarum-related (VAR) .
    [Show full text]
  • Complete Genome Sequence of Vibrio Anguillarum Strain NB10, a Virulent Isolate from the Gulf of Bothnia
    http://www.diva-portal.org This is the published version of a paper published in Standards in Genomic Sciences. Citation for the original published paper (version of record): Holm, K O., Nilsson, K., Hjerde, E., Willassen, N-P., Milton, D L. (2015) Complete genome sequence of Vibrio anguillarum strain NB10, a virulent isolate from the Gulf of Bothnia. Standards in Genomic Sciences, 10: 60 http://dx.doi.org/10.1186/s40793-015-0060-7 Access to the published version may require subscription. N.B. When citing this work, cite the original published paper. Permanent link to this version: http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-116115 Holm et al. Standards in Genomic Sciences (2015) 10:60 DOI 10.1186/s40793-015-0060-7 EXTENDED GENOME REPORT Open Access Complete genome sequence of Vibrio anguillarum strain NB10, a virulent isolate from the Gulf of Bothnia Kåre Olav Holm1, Kristina Nilsson2, Erik Hjerde1, Nils-Peder Willassen1 and Debra L. Milton2* Abstract Vibrio anguillarum causes a fatal hemorrhagic septicemia in marine fish that leads to great economical losses in aquaculture world-wide. Vibrio anguillarum strain NB10 serotype O1 is a Gram-negative, motile, curved rod-shaped bacterium, isolated from a diseased fish on the Swedish coast of the Gulf of Bothnia, and is slightly halophilic. Strain NB10 is a virulent isolate that readily colonizes fish skin and intestinal tissues. Here, the features of this bacterium are described and the annotation and analysis of its complete genome sequence is presented. The genome is 4,373,835 bp in size, consists of two circular chromosomes and one plasmid, and contains 3,783 protein-coding genes and 129 RNA genes.
    [Show full text]
  • 16S Ribosomal DNA Sequencing Confirms the Synonymy of Vibrio Harveyi and V
    DISEASES OF AQUATIC ORGANISMS Vol. 52: 39–46, 2002 Published November 7 Dis Aquat Org 16S ribosomal DNA sequencing confirms the synonymy of Vibrio harveyi and V. carchariae Eric J. Gauger, Marta Gómez-Chiarri* Department of Fisheries, Animal and Veterinary Science, 20A Woodward Hall, University of Rhode Island, Kingston, Rhode Island 02881, USA ABSTRACT: Seventeen bacterial strains previously identified as Vibrio harveyi (Baumann et al. 1981) or V. carchariae (Grimes et al. 1984) and the type strains of V. harveyi, V. carchariae and V. campbellii were analyzed by 16S ribosomal DNA (rDNA) sequencing. Four clusters were identified in a phylo- genetic analysis performed by comparing a 746 base pair fragment of the 16S rDNA and previously published sequences of other closely related Vibrio species. The type strains of V. harveyi and V. car- chariae and about half of the strains identified as V. harveyi or V. carchariae formed a single, well- supported cluster designed as ‘bona fide’ V. harveyi/carchariae. A second more heterogeneous clus- ter included most other strains and the V. campbellii type strain. Two remaining strains are shown to be more closely related to V. rumoiensis and V. mediterranei. 16S rDNA sequencing has confirmed the homogeneity and synonymy of V. harveyi and V. carchariae. Analysis of API20E biochemical pro- files revealed that they are insufficient by themselves to differentiate V. harveyi and V. campbellii strains. 16S rDNA sequencing, however, can be used in conjunction with biochemical techniques to provide a reliable method of distinguishing V. harveyi from other closely related species. KEY WORDS: Vibrio harveyi · Vibrio carchariae · Vibrio campbellii · Vibrio trachuri · Ribosomal DNA · Biochemical characteristics · Diagnostic · API20E Resale or republication not permitted without written consent of the publisher INTRODUCTION environmental sources (Ruby & Morin 1979, Orndorff & Colwell 1980, Feldman & Buck 1984, Grimes et al.
    [Show full text]
  • D009p073.Pdf
    DISEASES OF AQUATIC ORGANISMS Vol. 9: 73-82, 1990 Published August 16 Dis, aquat. Org. REVIEW A review of the taxonomy and seroepizootiology of Vibrio anguillarum, with special reference to aquaculture in the northwest of Spain Alicia E. Toranzo, Juan L. Barja Departamento de Microbiologia y Parasitologla, Facultad de Biologia, Universidad de Santiago, E-15706 Santiago de Compostela, Spain ABSTRACT. A review of the literature shows that although the number of serotypes of Vibrio anguillarum reported from different countries varies, most of the vibriosis outbreaks throughout the world are caused by only 2 serotypes: 01 and 02 (European serotype designation). The remaining serotypes, associated mainly with environmental samples such as water, sediment, phyto- and zoo- plankton, are generally non-pathogenic to fish. This raises the question as to whether the 2 major pathogenic serotypes of V. anguillarum (isolated only from diseased or carrier fish) should be consi- dered opportunistic or obligate fish pathogens. In addition, information useful in epizootiological and vaccination studies is presented about the antigenic heterogeneity detected within serotype 02. In this review, emphasis is placed on the presence in the marine environment of vibrios (presumptively assigned to the V. splendidus and V. pelagius) species that are taxonomically and serologically related with V. anguillarum and some of which have been associated with disease in fish cultured on the Atlantic coast of Spain and Norway. The precise phylogenetic position of these V. anguillarum-like organisms are well as their actual threat to marine aquaculture remains to be clarified. INTRODUCTION vibrios are phylogenetically closely related and can be designated as V.
    [Show full text]
  • Vibrio Diseases of Marine Fish Populations
    HELGOL~NDER MEERESUNTERSUCHUNGEN Helgolander Meeresunters. 37, 265-287 (1984) Vibrio diseases of marine fish populations R. R. Colwell & D. J. Grimes Department of Microbiology, University of Maryland; College Park, MD 20742 USA ABSTRACT: Several Vibrio spp. cause disease in marine fish populations, both wild and cultured. The most common disease, vibriosis, is caused by V. anguillarum. However, increase in the intensity of mariculture, combined with continuing improvements in bacterial systematics, expands the list of Vibrio spp. that cause fish disease. The bacterial pathogens, species of fish affected, virulence mechanisms, and disease treatment and prevention are included as topics of emphasis in this review, INTRODUCTION It is most appropriate that the introductory paper at this Symposium on Diseases of Marine Organisms should be about vibrios. The disease syndrome termed vibriosis was one of the first diseases of marine fish to be described (Sindermann, 1970; Home, 1982). Called "red sore", "red pest", "red spot" and "red disease" because of characteristic hemorrhagic skin lesions, this disease was recognized and described as early as 1718 in Italy, with numerous epizootics being documented throughout the 19th century (Crosa et al., 1977; Sindermann, 1970). Today, while "red sore" is, without doubt, the best understood of the marine bacterial fish diseases, new diseases have been added to the list of those caused by Vibrio spp. The more recently published work describing Vibrio disease, primarily that appear- ing in the literature since 1977, will be the focus of this paper. Bacterial pathogens, the species of fish affected, virulence mechanisms, and disease treatment and prevention are included as topics of emphasis.
    [Show full text]
  • Handbook Version 12
    A handbook of diseases of importance to aquaculture in New Zealand B. K. Diggles P. M. Hine S. Handley N. C. Boustead NIWA Science and Technology Series No. 49 2002 Published by NIWA Wellington 2002 Edited and produced by Science Communication, NIWA, PO Box 14-901, Wellington, New Zealand ISSN 1173-0382 ISBN 0-478-23248-9 © NIWA 2002 Citation: Diggles, B.K.; Hine, P.M.; Handley, S.; Boustead, N.C. (2002). A handbook of diseases of importance to aquaculture in New Zealand. NIWA Science and Technology Series No. 49. 200 p. Cover: Eggs of the monogenean ectoparasite Zeuxapta seriolae (see p. 102) from the gills of kingfish. Photo by Ben Diggles. The National Institute of Water and Atmospheric Research is New Zealand’s leading provider of atmospheric, marine, and freshwater science Visit NIWA’s website at http://www.niwa.co.nz 2 Contents Introduction 6 Disclaimer 7 Disease and stress in the aquatic environment 8 Who to contact when disease is suspected 10 Submitting a sample for diagnosis 11 Basic anatomy of fish and shellfish 12 Quick help guide 14 This symbol in the text denotes a disease is exotic to New Zealand Contents colour key: Black font denotes disease present in New Zealand Blue font denotes disease exotic to New Zealand Red font denotes an internationally notifiable disease exotic to New Zealand Diseases of Fishes Freshwater fishes 17 Viral diseases Epizootic haematopoietic necrosis (EHN) 18 Infectious haematopoietic necrosis (IHN) 20 Infectious pancreatic necrosis (IPN)* 22 Infectious salmon anaemia (ISA) 24 Oncorhynchus masou
    [Show full text]
  • An Aphrodisiac Produced by Vibrio Fischeri Stimulates Mating in the Closest Living Relatives of Animals
    bioRxiv preprint doi: https://doi.org/10.1101/139022; this version posted May 17, 2017. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. An aphrodisiac produced by Vibrio fischeri stimulates mating in the closest living relatives of animals Arielle Woznicaa,1, Joseph P Gerdtb,1, Ryan E. Huletta, Jon Clardyb,2, and Nicole Kinga,2 a Howard Hughes Medical Institute and Department of Molecular and Cell Biology, University of California, Berkeley, California 94720, United States b Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, 240 Longwood Avenue, Boston MA 02115, United States 1 These authors contributed equally to this work. 2 Co-corresponding authors, [email protected] and [email protected]. 1 bioRxiv preprint doi: https://doi.org/10.1101/139022; this version posted May 17, 2017. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. Abstract We serendipitously discovered that the marine bacterium Vibrio fischeri induces sexual reproduction in one of the closest living relatives of animals, the choanoflagellate Salpingoeca rosetta. Although bacteria influence everything from nutrition and metabolism to cell biology and development in eukaryotes, bacterial regulation of eukaryotic mating was unexpected. Here we show that a single V.
    [Show full text]
  • Spatiotemporal Regulation of Vibrio Exotoxins by Hlyu and Other Transcriptional Regulators
    toxins Review Spatiotemporal Regulation of Vibrio Exotoxins by HlyU and Other Transcriptional Regulators Byoung Sik Kim Department of Food Science and Engineering, ELTEC College of Engineering, Ewha Womans University, Seoul 03760, Korea; [email protected] Received: 8 August 2020; Accepted: 19 August 2020; Published: 22 August 2020 Abstract: After invading a host, bacterial pathogens secrete diverse protein toxins to disrupt host defense systems. To ensure successful infection, however, pathogens must precisely regulate the expression of those exotoxins because uncontrolled toxin production squanders energy. Furthermore, inappropriate toxin secretion can trigger host immune responses that are detrimental to the invading pathogens. Therefore, bacterial pathogens use diverse transcriptional regulators to accurately regulate multiple exotoxin genes based on spatiotemporal conditions. This review covers three major exotoxins in pathogenic Vibrio species and their transcriptional regulation systems. When Vibrio encounters a host, genes encoding cytolysin/hemolysin, multifunctional-autoprocessing repeats-in-toxin (MARTX) toxin, and secreted phospholipases are coordinately regulated by the transcriptional regulator HlyU. At the same time, however, they are distinctly controlled by a variety of other transcriptional regulators. How this coordinated but distinct regulation of exotoxins makes Vibrio species successful pathogens? In addition, anti-virulence strategies that target the coordinating master regulator HlyU and related future research directions are discussed. Keywords: exotoxin; transcriptional regulation; hemolysin; cytolysin; MARTX toxin; secreted phospholipase; HlyU; Vibrio species Key Contribution: During infection, major exotoxin genes in pathogenic Vibrio species are coordinately but distinctly regulated by HlyU and other transcriptional regulators for spatiotemporal expression. 1. Introduction The genus Vibrio is composed of various bacterial species that are metabolically versatile.
    [Show full text]
  • Vibrio Anguillarum As a Fish Pathogen: Virulence Factors, Diagnosis And
    Journal of Fish Diseases 2011, 34, 643–661 doi:10.1111/j.1365-2761.2011.01279.x Review Vibrio anguillarum as a fish pathogen: virulence factors, diagnosis and prevention I Frans1,2,3,4, C W Michiels3, P Bossier4, K A Willems1,2, B Lievens1,2 and H Rediers1,2 1 Laboratory for Process Microbial Ecology and Bioinspirational Management (PME & BIM), Consortium for Industrial Microbiology and Biotechnology (CIMB), Department of Microbial and Molecular Systems (M2S), K.U. Leuven Association, Lessius Mechelen, Sint-Katelijne-Waver, Belgium 2 Scientia Terrae Research Institute, Sint-Katelijne-Waver, Belgium 3 Department of Microbial and Molecular Systems (M2S), Centre for Food and Microbial Technology, K.U. Leuven, Leuven, Belgium 4 Laboratory of Aquaculture & Artemia Reference Centre, Faculty of Bioscience Engineering, Ghent University, Gent, Belgium Bacterium anguillarum (Canestrini 1893). A few Abstract years later, Bergman proposed the name Vibrio Vibrio anguillarum, also known as Listonella anguillarum for the aetiological agent of the Ôred anguillarum, is the causative agent of vibriosis, a pest of eelsÕ in the Baltic Sea (Bergman 1909). deadly haemorrhagic septicaemic disease affecting Because of the high similarity of the disease signs various marine and fresh/brackish water fish, biv- and characteristics of the causal bacterium described alves and crustaceans. In both aquaculture and lar- in both reports, it was suggested that it concerned viculture, this disease is responsible for severe the same causative agent. economic losses worldwide. Because of its high Currently, V. anguillarum is widely found in morbidity and mortality rates, substantial research various cultured and wild fish as well as in bivalves has been carried out to elucidate the virulence and crustaceans in salt or brackish water causing a fatal mechanisms of this pathogen and to develop rapid haemorrhagic septicaemic disease, called vibriosis detection techniques and effective disease-preven- (Aguirre-Guzma´n, Ruı´z & Ascencio 2004; Paillard, tion strategies.
    [Show full text]
  • CGM-18-001 Perseus Report Update Bacterial Taxonomy Final Errata
    report Update of the bacterial taxonomy in the classification lists of COGEM July 2018 COGEM Report CGM 2018-04 Patrick L.J. RÜDELSHEIM & Pascale VAN ROOIJ PERSEUS BVBA Ordering information COGEM report No CGM 2018-04 E-mail: [email protected] Phone: +31-30-274 2777 Postal address: Netherlands Commission on Genetic Modification (COGEM), P.O. Box 578, 3720 AN Bilthoven, The Netherlands Internet Download as pdf-file: http://www.cogem.net → publications → research reports When ordering this report (free of charge), please mention title and number. Advisory Committee The authors gratefully acknowledge the members of the Advisory Committee for the valuable discussions and patience. Chair: Prof. dr. J.P.M. van Putten (Chair of the Medical Veterinary subcommittee of COGEM, Utrecht University) Members: Prof. dr. J.E. Degener (Member of the Medical Veterinary subcommittee of COGEM, University Medical Centre Groningen) Prof. dr. ir. J.D. van Elsas (Member of the Agriculture subcommittee of COGEM, University of Groningen) Dr. Lisette van der Knaap (COGEM-secretariat) Astrid Schulting (COGEM-secretariat) Disclaimer This report was commissioned by COGEM. The contents of this publication are the sole responsibility of the authors and may in no way be taken to represent the views of COGEM. Dit rapport is samengesteld in opdracht van de COGEM. De meningen die in het rapport worden weergegeven, zijn die van de auteurs en weerspiegelen niet noodzakelijkerwijs de mening van de COGEM. 2 | 24 Foreword COGEM advises the Dutch government on classifications of bacteria, and publishes listings of pathogenic and non-pathogenic bacteria that are updated regularly. These lists of bacteria originate from 2011, when COGEM petitioned a research project to evaluate the classifications of bacteria in the former GMO regulation and to supplement this list with bacteria that have been classified by other governmental organizations.
    [Show full text]