The abstract is read at the publisher; the summary is JClub's.
Early-life ecological conditions enable strain-dependent gut engraftment of engineered Escherichia coli, with EcN and EcWJ colonizing durably after single administration while MG1655 colonizes poorly.
- Why it matters: Intestinal engraftment and functional persistence of live biotherapeutics are limited by unclear ecological constraints, so a controllable in vivo framework is needed to predict and improve performance.
- What they did: Using early-life as an in vivo platform, the study compared colonization across Escherichia coli strains and linked engraftment to intrinsic bacterial fitness and host immune responses; engineered EcWJ/EcN carried either an AvCys secretion module or a 5-HTP biosynthesis module.
- The result: Engineered EcWJ and EcN preserved long-term gut colonization and functional outputs, with EcN showing superior efficacy in a colitis model despite lower abundance, while EcWJ showed better colonization and 5-HTP biosynthesis.
The findingWhy it mattersWhat they didThe result
AI summary of the abstract · may contain errors · not medical advice · read the paper.