期刊
MICROORGANISMS
卷 9, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/microorganisms9020371
关键词
Clostridioides difficile; Clostridium scindens; secondary bile acids; deconjugation; dehydroxylation; epimerization; short-chain fatty acids; proline; hydroxyproline
类别
资金
- NCSU Molecular Biology Training Program through National Institutes of Health (NIH) [T32 GM008776]
- National Institute of General Medical Sciences of the National Institutes of Health [R35GM119438]
Commensal Clostridium in the gut play a crucial role in resisting colonization by Clostridioides difficile by altering bile acids, producing inhibitory metabolites, and competing for essential nutrients. Understanding the mechanisms of action of these metabolites on C. difficile and other gut pathogens is essential for developing urgently needed new therapeutics for C. difficile infection.
Clostridioides difficile is an anaerobic pathogen that causes significant morbidity and mortality. Understanding the mechanisms of colonization resistance against C. difficile is important for elucidating the mechanisms by which C. difficile is able to colonize the gut after antibiotics. Commensal Clostridium play a key role in colonization resistance. They are able to modify bile acids which alter the C. difficile life cycle. Commensal Clostridium also produce other inhibitory metabolites including antimicrobials and short chain fatty acids. They also compete with C. difficile for vital nutrients such as proline. Understanding the mechanistic effects that these metabolites have on C. difficile and other gut pathogens is important for the development of new therapeutics against C. difficile infection (CDI), which are urgently needed.
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