Characterization of filamentous phages of vibrio cholerae O139 and O1

Masahiko Ehara, Shoichi Shimodori, Fumiko Kojima, Yoshio Ichinose, Toshiya Hirayama, M. John Albert, Krongkaew Supawat, Yasuko Honma, Masaaki Iwanaga, Kazunobu Amako

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We have analyzed our collection of Vibrio cholerae O139 strains to determine whether filamentous phages are produced in their culture supernatants, and whether any replicative form of DNA is detectable in cell lysates. Two types of filamentous phage, designated fs1 (6.4 kb) and fs2 (8.5 kb), were found in strains of Vibrio cholerae O139, fsl was commonly produced from clinical isolates of Vibrio cholerae O1. Infectious particles (filamentous phages) were inducible by subculture, mitomycin C, and cultivation in a ligated ileal loop of a rabbit. Type 4 fimbriae of Vibrio cholerae O1 sensitive to D-glucose and D-mannose were suggested to be receptors for fs1 and fs2. The genome of fs1 was revealed to encode a potential new enterotoxin homologous to zonula occludens toxin. Clarification of the relation of type 4 fimbriae and these filamentous phages will provide a new understanding of the colonization of Vibrio cholerae O1. and O139. Thus the presence of a new enterotoxin encoded by the genome of filamentous phage like fs1 may clarify the pathogenesis of cholera toxin negative clinical isolates of Vibrio cholerae O1 and non-O1. Our findings combined with the earlier report by Ehara et al. [Microbio. Immunol. 37 (1993) 679-688] suggest that type 4 fimbriae of Vibrio io choler ae O1. are important for the development of an effective vaccine against cholera.

Original languageEnglish
Pages (from-to)293-301
Number of pages9
JournalFEMS microbiology letters
Issue number2
Publication statusPublished - Sept 15 1997

All Science Journal Classification (ASJC) codes

  • Microbiology
  • Molecular Biology
  • Genetics


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