In vivo commensal control of Clostridioides difficile virulence.

In vivo commensal control of Clostridioides difficile virulence.
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艰难梭菌毒力的体内生物学控制。

DOI:
10.1016/j.chom.2021.09.007
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发表时间:
2021-11-10
影响因子:
30.3
通讯作者:
Bry L
Bry L
中科院分区:
医学1区
文献类型:
--
作者:
Girinathan BP;DiBenedetto N;Worley JN;Peltier J;Arrieta-Ortiz ML;Immanuel SRC;Lavin R;Delaney ML;Cummins CK;Hoffman M;Luo Y;Gonzalez-Escalona N;Allard M;Onderdonk AB;Gerber GK;Sonenshein AL;Baliga NS;Dupuy B;Bry L

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Leveraging systems biologic approaches, we illustrate how metabolically distinct species of Clostridia protect against or worsen Clostridioides difficile infection in mice by modulating the pathogen’s colonization, growth, and virulence to impact host survival. Gnotobiotic mice colonized with the amino acid fermenter Paraclostridium bifermentans survive infection with reduced disease severity, while mice colonized with the butyrate-producer, Clostridium sardiniense, more rapidly succumb. Systematic in vivo analyses revealed how each commensal alters the gut nutrient environment to modulate the pathogen’s metabolism, gene regulatory networks, and toxin production. Oral administration of P. bifermentans rescues conventional, clindamycin-treated mice from lethal C. difficile infection in a manner like that of monocolonized animals, thereby supporting the therapeutic potential of this commensal species. Our findings lay the foundation for mechanistically informed therapies to counter C. difficile disease using systems biologic approaches to define host-commensal-pathogen interactions in vivo. Girinathan, et al. defines complex mechanisms by which individual gut commensals limit or worsen Clostridioides difficile pathogenicity. Integrated, high-resolution analyses of metabolomic, meta-transcriptomic and phenotypic outcomes identify complex inter-microbe interactions in vivo to delineate how commensals uniquely shape the intestinal environment to impact microbial programs, which may enlighten bacteriotherapeutic approaches.
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