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Clostridioides difficile infection study models and prospectives for probing the microbe-host interface.

Tatiana Zvonareva1, David S Courson1, Erin B Purcell1

  • 1Department of Chemistry & Biochemistry, Old Dominion University, Norfolk, Virginia, USA.

Journal of Bacteriology
|February 6, 2025
PubMed
Summary

Clostridioides difficile infection (CDI) research faces challenges with current animal models. This review explores alternative in vitro models for better understanding CDI and developing new treatments.

Keywords:
CDIClostridioides difficilehost-pathogen interfacerose chamber

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Area of Science:

  • Microbiology
  • Infectious Diseases
  • Translational Research

Background:

  • Clostridioides difficile infection (CDI) is a significant public health concern with high recurrence rates and limited therapeutic options.
  • In vivo models are crucial for studying CDI pathophysiology and preclinical testing but face limitations in accessibility, cost, ethics, and translatability.
  • Existing in vitro models offer control and dynamic analysis but struggle to fully capture the host-pathogen interaction essential for early CDI stages.

Purpose of the Study:

  • To review and evaluate the strengths and weaknesses of various in vivo and in vitro models for Clostridioides difficile infection research.
  • To identify current limitations in modeling CDI, particularly the host-pathogen interface.
  • To discuss future directions and alternative approaches for improved CDI research models.

Main Methods:

  • Literature review of existing in vivo and in vitro models for Clostridioides difficile infection.
  • Comparative analysis of the advantages and disadvantages of each modeling approach.
  • Discussion of emerging in vitro co-culture platforms.

Main Results:

  • In vivo models provide insights into systemic host response but have translatability issues.
  • In vitro fermentation and continuous platforms allow study of microbe-microbe and microbe-microbiome interactions.
  • Current in vitro models are insufficient for studying the host-pathogen interface in early CDI.

Conclusions:

  • A critical evaluation of current CDI models is necessary to address research gaps.
  • Development of advanced in vitro co-culture systems is crucial for modeling the host-pathogen interface.
  • Future research should focus on creating more accessible, translatable, and comprehensive models for CDI.