Depletion of microbiome-derived molecules in the host using Clostridium genetics

The clostridia are Firmicute bacterial commensals commonly found in the mammalian gut. Clostridia produce a range of metabolites that diffuse into the host’s circulation and have been difficult to manipulate genetically, but Guo et al. successfully developed a CRISPR-Cas9 deletion system in Clostridium sporogenes (see the Perspective by Henke and Clardy). The authors used deletion mutants and…

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