Dual RNA-seq study of the dynamics of coding and non-coding RNA expression during Clostridioides difficile infection...

Area of Science:

• Microbiology
• Genomics
• Immunology

Background:

• Clostridioides difficile infection (CDI) is a significant healthcare-associated diarrheal disease.
• The role of non-coding RNAs (ncRNAs) in CDI pathogenesis and host interaction is largely unexplored.
• Understanding these mechanisms is crucial for developing effective treatments.

Purpose of the Study:

• To investigate the dynamics of ncRNA expression in both C. difficile and the host during infection.
• To identify novel ncRNAs involved in CDI pathogenesis and host immune response.
• To explore the interplay between CDI, host gene expression, and gut microbiota composition.

Main Methods:

• Utilized a dual RNA-sequencing (RNA-seq) approach in a conventional murine model of CDI.
• Analyzed pathogen and host transcriptomes simultaneously.
• Performed metatranscriptomic analysis to assess gut microbiota changes.

Main Results:

• Identified 61 differentially expressed ncRNAs in C. difficile, including 106 new ncRNA genes, correlating with virulence and metabolic gene upregulation.
• Detected 185 differentially expressed ncRNAs in the host, including microRNAs (miRNAs) linked to inflammation.
• Observed specific host gene expression profiles associated with symptomatic infection and distinct gut microbiota compositions.

Conclusions:

• Dual RNA-seq provides a comprehensive view of C. difficile infection dynamics.
• Identified ncRNAs likely mediate pathogen adaptation and host immune crosstalk.
• Findings suggest potential RNA-based and microbiota-modulatory therapeutic strategies for CDI.