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Updated: Jun 12, 2025

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Positive Intervention of Distinct Peptides in Clostridioides difficile Infection in a Mouse Model.

Ying Li1,2, Zhan Wang3, Lu Lu Bai2

  • 1College of Food Science and Technology, Ocean University China, Qingdao, China.

Communications Biology
|September 18, 2024
PubMed
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Engraulis japonicus peptides show superior therapeutic effects against Clostridioides difficile infection (CDI) compared to Glycine max peptides. They effectively reduce inflammation, repair the gut barrier, and restore gut microbiota diversity, supporting natural peptide treatments for CDI.

Area of Science:

  • Biochemistry
  • Microbiology
  • Gastroenterology

Background:

  • Clostridioides difficile infection (CDI) is a significant healthcare-associated infection and a leading cause of gastroenteritis-related mortality globally.
  • Understanding the impact of peptide composition from different protein sources is crucial for developing effective treatments for CDI.

Purpose of the Study:

  • To compare the peptide compositions of Engraulis japonicus and Glycine max.
  • To investigate the in vivo therapeutic effects of these peptides on CDI.
  • To evaluate the efficacy of E. japonicus and G. max peptides in managing intestinal inflammation, barrier function, and gut microbiota.

Main Methods:

  • Peptide sequences and compositions were analyzed using Ultra High Performance Liquid Chromatography Tandem Mass Spectrometry (UPLC-MS/MS).

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  • An animal model of CDI was established to assess the therapeutic potential of the peptides.
  • Effects on colon epithelial cell proliferation, tight junctions, and cecal microbiome were evaluated.

    • Main Results:

    • Peptide compositions of E. japonicus and G. max differed significantly, with only 11% sequence identity.
    • Oral administration of peptides reduced intestinal inflammation, repaired the intestinal barrier, and modulated gut bacteria.
    • E. japonicus peptides demonstrated superior efficacy in promoting colon epithelial cell proliferation and restoring gut microbiota diversity compared to G. max peptides.

    Conclusions:

    • Engraulis japonicus peptides exhibit greater therapeutic potential for treating CDI than Glycine max peptides.
    • Natural peptides, particularly from E. japonicus, represent a promising avenue for CDI treatment and the development of specialty foods.
    • Further research into peptide-based therapies can significantly impact the management of CDI and related enteritis.