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Afrizal, Afrizal; Jennings, Susan A.; Hitch, Thomas C. A.; Riedel, Thomas; Basic, Marijana; Panyot, Atscharah; Treichel, Nicole; Hager, Fabian T.; Wong, Erin Oi-Yan; Wolter, Birger; Viehof, Alina; Strempel, Alexandra von; Eberl, Claudia; Buhl, Eva M.; Abt, Birte; Bleich, Andre; Tolba, Rene; Blank, Lars M.; Navarre, William W.; Kiessling, Fabian; Horz, Hans-Peter; Torow, Natalia; Cerovic, Vuk; Stecher, Barbel; Strowig, Till; Overmann, Joerg and Clavel, Thomas (2022): Enhanced cultured diversity of the mouse gut microbiota enables custom-made synthetic communities. In: Cell Host & Microbe, Vol. 30, No. 11: pp. 1630-1645

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Abstract

Microbiome research needs comprehensive repositories of cultured bacteria from the intestine of mammalian hosts. We expanded the mouse intestinal bacterial collection (www.dsmz.de/miBC) to 212 strains, all publicly available and taxonomically described. This includes strain-level diversity, small-sized bacteria, and previously undescribed taxa (one family, 10 genera, and 39 species). This collection enabled metagenome-educated prediction of synthetic communities (SYNs) that capture key functional differences between microbiomes, notably identifying communities associated with either resistance or susceptibility to DSS-induced colitis. Additionally, nine species were used to amend the Oligo-Mouse Microbiota (OMM) 12 model, yielding the OMM19.1 model. The added strains compensated for phenotype differences between OMM12 and specific pathogen-free mice, including body composition and immune cells in the intestine and associated lymphoid tissues. Ready-to-use OMM stocks are available for future studies. In conclusion, this work improves our knowledge of gut microbiota diversity in mice and enables functional studies via the modular use of isolates.

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