The role of AJB35136 and fdtA genes in biofilm formation by avian pathogenic Escherichia coli.

Autor: Khan MM; Institute of Biotechnology, Brandenburg University of Technology, Cottbus-Senftenberg, Universitätsplatz 1, D-01968, Senftenberg, Germany., Ali A; Institute of Biotechnology, Brandenburg University of Technology, Cottbus-Senftenberg, Universitätsplatz 1, D-01968, Senftenberg, Germany. myaamirali@yahoo.com.; National Institute for Biotechnology and Genetic Engineering College, Pakistan Institute of Engineering and Applied Sciences (NIBGE-C, PIEAS) , Jhang Road, POBox 577, Faisalabad, Pakistan. myaamirali@yahoo.com., Kolenda R; Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Wrocław, Poland.; Quadram Institute, Norwich Research Park, Norwich, UK., Olowe OA; Institute of Biotechnology, Brandenburg University of Technology, Cottbus-Senftenberg, Universitätsplatz 1, D-01968, Senftenberg, Germany.; Department of Medical Microbiology and Parasitology, College of Health Sciences, Ladoke Akintola University of Technology, Ogbomosho, Oyo State, Nigeria., Weinreich J; Institute of Biotechnology, Brandenburg University of Technology, Cottbus-Senftenberg, Universitätsplatz 1, D-01968, Senftenberg, Germany., Li G; Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, USA.; State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China., Schierack P; Institute of Biotechnology, Brandenburg University of Technology, Cottbus-Senftenberg, Universitätsplatz 1, D-01968, Senftenberg, Germany.
Jazyk: angličtina
Zdroj: BMC veterinary research [BMC Vet Res] 2023 Aug 18; Vol. 19 (1), pp. 126. Date of Electronic Publication: 2023 Aug 18.
DOI: 10.1186/s12917-023-03672-7
Abstrakt: Background: Infections caused by avian pathogenic Escherichia coli (APEC) result in significant economic losses in poultry industry. APEC strains are known to form biofilms in various conditions allowing them to thrive even under harsh and nutrient-deficient conditions on different surfaces, and this ability enables them to evade chemical and biological eradication methods. Despite knowing the whole genome sequences of various APEC isolates, little has been reported regarding their biofilm-associated genes. A random transposon mutant library of the wild-type APEC IMT 5155 comprising 1,300 mutants was analyzed for biofilm formation under nutrient deprived conditions using Videoscan technology coupled with fluorescence microscopy. Seven transposon mutants were found to have reproducibly and significantly altered biofilm formation and their mutated genes were identified by arbitrary PCR and DNA sequencing. The intact genes were acquired from the wild-type strain, cloned in pACYC177 plasmid and transformed into the respective altered biofilm forming transposon mutants, and the biofilm formation was checked in comparison to the wild type and mutant strains under the same conditions.
Results: In this study, we report seven genes i.e., nhaA, fdeC, yjhB, lysU, ecpR, AJB35136 and fdtA of APEC with significant contribution to biofilm formation. Reintroduction of AJB35136 and fdtA, reversed the altered phenotype proving that a significant role being played by these two O-antigen related genes in APEC biofilm formation. Presence of these seven genes across nonpathogenic E. coli and APEC genomes was also analyzed showing that they are more prevalent in the latter.
Conclusions: The study has elucidated the role of these genes in APEC biofilm formation and compared them to adhesion expanding the knowledge and understanding of the economically significant pathogens.
(© 2023. BioMed Central Ltd., part of Springer Nature.)
Databáze: MEDLINE
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