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An in vitro model maintaining taxon-specific functional activities of the gut microbiome

By Leyuan Li, Elias Abou-Samra, Zhibin Ning, Xu Zhang, Janice Mayne, Janet Wang, Kai Cheng, Krystal Walker, Alain Stintzi, Daniel Figeys

Posted 23 Apr 2019
bioRxiv DOI: 10.1101/616656 (published DOI: 10.1038/s41467-019-12087-8)

The gut microbiome is a new target for therapeutics. In vitro high-throughput culture models could provide time-and-cost saving solutions to discover microbiome responses to drugs. Unfortunately, there has been no report of in vitro models capable of maintaining functional and compositional profiles resembling the in vivo gut microbiome. Here, we developed and validated a high-throughput culturing model named Mipro to maintain individuals' microbiomes. The Mipro model quintupled viable bacteria count while maintained the functional and compositional profiles of individual gut microbiomes. Comparison of taxon-specific functions between pre -and-post culture microbiomes showed Pearson's correlation coefficient r of 0.83 ± 0.03. Moreover, the Mipro model also exhibited a high degree of in vitro-in vivo correlation (Pearson's r of 0.68 ± 0.09) in microbial responses to metformin in mice fed a high-fat diet. Mipro provides a highly simulated gut microbiome for high-throughput investigation of drug-microbiome interactions.

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