Related Experiment Video

Updated: Feb 12, 2026

Cefoperazone-treated Mouse Model of Clinically-relevant Clostridium difficile Strain R20291
06:51

Cefoperazone-treated Mouse Model of Clinically-relevant Clostridium difficile Strain R20291

Published on: December 10, 2016

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Identification of Clostridium difficile Immunoreactive Spore Proteins of the Epidemic Strain R20291

Marjorie Pizarro-Guajardo1, María Cristina Ravanal2,3, Maria Daniela Paez4

  • 1Microbiota-Host Interactions and Clostridia Research Group, Facultad de Ciencias Biológicas, Department of Biological Sciences, Universidad Andrés Bello, Santiago, 8370146, Chile.

Proteomics. Clinical Applications
|March 25, 2018
PubMed
Abstract

Insights

Researchers identified five spore surface proteins from Clostridium difficile (C. diff) as potential targets for new vaccines and therapies against C. diff infections, offering hope for improved treatments.

Area of Science:

  • Microbiology
  • Immunology
  • Vaccine Development

Background:

  • Clostridium difficile infections (CDI) are a major cause of antibiotic-associated diarrhea.
  • C. difficile spores persist in hosts, leading to disease dissemination.
  • Current therapies focus on toxins A and B, necessitating new approaches.

Purpose of the Study:

  • To identify immunogenic proteins on the surface of C. difficile spores.
  • To find potential candidates for immunotherapy and diagnostic methods against CDI.
  • To explore novel vaccine targets beyond C. difficile toxins.

Main Methods:

  • An immunoproteomic approach was employed.
  • Spore coat/exosporium extracts were analyzed using 2D electrophoresis.
  • Mass spectrometry (MS/MS) identified immunoreactive proteins.

Main Results:

  • Five immunoreactive proteins were identified on the C. difficile spore surface.
  • These include spore coat proteins (CotE, CotA, CotCB) and exosporium protein (CdeC).
  • A cytosolic methyltransferase was also found to be immunoreactive.

Conclusions:

  • The identified proteins are potential antigens for C. difficile vaccine development.
  • This study provides a list of candidates for novel immunotherapy strategies.
  • These findings contribute to developing new methods to combat CDI.
Keywords:
2D electrophoresisCDI patientsClostridium difficileimmunoproteomicsisoelectric focusingserologic reactivityspores

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