Genetic manipulation of the human gut bacterium Eggerthella lenta reveals a widespread family of transcriptional regulators.

ABSTRACT: Eggerthella lenta is a prevalent human gut Actinobacterium implicated in drug, dietary phytochemical, and bile acid metabolism and associated with multiple human diseases. No genetic tools are currently available for the direct manipulation of E. lenta. Here, we construct shuttle vectors and develop methods to transform E. lenta and other Coriobacteriia. With these tools, we characterize endogenous E. lenta constitutive and inducible promoters using a reporter system and construct inducible expression systems, enabling tunable gene regulation. We also achieve genome editing by harnessing an endogenous type I-C CRISPR-Cas system. Using these tools to perform genetic knockout and complementation, we dissect the functions of regulatory proteins and enzymes involved in catechol metabolism, rev

SUBMITTER: Dong X 

PROVIDER: S-EPMC9734109 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature