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

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.