Abstract
Microbial functions in the host physiology are a result of the microbiota-host co-evolution. We show that cold exposure leads to marked shift of the microbiota composition, referred to as cold microbiota. Transplantation of the cold microbiota to germ-free mice is sufficient to increase insulin sensitivity of the host and enable tolerance to cold partly by promoting the white fat browning, leading to increased energy expenditure and fat loss. During prolonged cold, however, the body weight loss is attenuated, caused by adaptive mechanisms maximizing caloric uptake and increasing intestinal, villi, and microvilli lengths. This increased absorptive surface is transferable with the cold microbiota, leading to altered intestinal gene expression promoting tissue remodeling and suppression of apoptosis - the effect diminished by co-transplanting the most cold-downregulated strain Akkermansia muciniphila during the cold microbiota transfer. Our results demonstrate the microbiota as a key factor orchestrating the overall energy homeostasis during increased demand.
Original language | English |
---|---|
Pages (from-to) | 1360-1374 |
Number of pages | 15 |
Journal | Cell |
Volume | 163 |
Issue number | 6 |
DOIs | |
Publication status | Published - 3 Dec 2015 |
Externally published | Yes |
Bibliographical note
Funding Information:We thank Maria Gustafsson Trajkovska, Claes Wollheim, and Roberto Coppari for discussions and critical reading; Jean-Baptiste Cavin and André Bado for sharing expertise in intestinal loop; Christian Darimont for help with bomb calorimetry; Abdessalam Cherkaoui and Jacques Schrenzel for the use of anaerobic incubator; (ERC-2013-StG-281904) to S.H. for partial support of the gnotobiotic research; Mirosava Ilievska for providing antibiotics; Mario Kreutzfeldt and Doron Merkler for help with histology quantifications; and Gabriel Waksman for support. The research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP/2007-2013)/ERC grant agreement 336607 (ERC-2013-StG-336607); the Louis-Jeantet Foundation; Fondation pour Recherches Médicales; Novartis Foundation (14B053); and the Swiss National Science Foundation (SNSF) Professorship (PP00P3_144886) to M.T.
Publisher Copyright:
© 2015 Elsevier Inc. All rights reserved.