Your browser doesn't support javascript.
loading
Impact of deoxycholate on Clostridioides difficile growth, toxin production, and sporulation.
Usui, Yukino; Ayibieke, Alafate; Kamiichi, Yuko; Okugawa, Shu; Moriya, Kyoji; Tohda, Shuji; Saito, Ryoichi.
Afiliación
  • Usui Y; Department of Molecular Microbiology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
  • Ayibieke A; Department of Molecular Microbiology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
  • Kamiichi Y; Department of Molecular Microbiology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
  • Okugawa S; Department of Infectious Diseases, The University of Tokyo Hospital, Tokyo, Japan.
  • Moriya K; Department of Infectious Diseases, The University of Tokyo Hospital, Tokyo, Japan.
  • Tohda S; Department of Clinical Laboratory, Tokyo Medical and Dental University Medical Hospital, Tokyo, Japan.
  • Saito R; Department of Molecular Microbiology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
Heliyon ; 6(4): e03717, 2020 Apr.
Article en En | MEDLINE | ID: mdl-32322715
PURPOSE: Bile acids play an important role in Clostridioides difficile life cycle. Deoxycholate (DCA), one of the most abundant secondary bile acids, is known to inhibit vegetative growth and toxin production. However, limited data are available on the role of DCA on C. difficile sporulation. Here, we investigated the phenotypic and genotypic impact of DCA on the growth, toxin production, and sporulation of C. difficile. METHODOLOGY: Four genetically divergent C. difficile strains were cultured in nutrient-rich broth with and without DCA at various concentrations, and growth activity was evaluated for each strain. Cytotoxicity assays using culture supernatants from cells grown in nutrient-rich broth with and without 0.01% DCA were conducted. Sporulation efficiency was determined using sporulation media with and without 0.01% DCA. Transcript levels of tcdB and spo0A were analyzed using quantitative reverse-transcription polymerase chain reaction. RESULTS: We found that DCA led to growth reduction in a dose-depended manner and regulated toxin production by repressing tcdB expression during vegetative growth. To our knowledge, we have also provided the first evidence that DCA reduces C. difficile sporulation efficiency through the downregulation of spo0A expression during the sporulation stage. CONCLUSIONS: DCA modulates C. difficile sporulation, vegetative growth, and toxin production.
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Heliyon Año: 2020 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Heliyon Año: 2020 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Reino Unido