PT - JOURNAL ARTICLE AU - Ruocco, Chiara AU - Ragni, Maurizio AU - Rossi, Fabio AU - Carullo, Pierluigi AU - Ghini, Veronica AU - Piscitelli, Fabiana AU - Cutignano, Adele AU - Manzo, Emiliano AU - Ioris, Rafael Maciel AU - Bontems, Franck AU - Tedesco, Laura AU - Greco, Carolina M. AU - Pino, Annachiara AU - Severi, Ilenia AU - Liu, Dianxin AU - Ceddia, Ryan P. AU - Ponzoni, Luisa AU - Tenori, Leonardo AU - Rizzetto, Lisa AU - Scholz, Matthias AU - Tuohy, Kieran AU - Bifari, Francesco AU - Di Marzo, Vincenzo AU - Luchinat, Claudio AU - Carruba, Michele O. AU - Cinti, Saverio AU - Decimo, Ilaria AU - Condorelli, Gianluigi AU - Coppari, Roberto AU - Collins, Sheila AU - Valerio, Alessandra AU - Nisoli, Enzo TI - Manipulation of Dietary Amino Acids Prevents and Reverses Obesity in Mice Through Multiple Mechanisms That Modulate Energy Homeostasis AID - 10.2337/db20-0489 DP - 2020 Nov 01 TA - Diabetes PG - 2324--2339 VI - 69 IP - 11 4099 - http://diabetes.diabetesjournals.org/content/69/11/2324.short 4100 - http://diabetes.diabetesjournals.org/content/69/11/2324.full SO - Diabetes2020 Nov 01; 69 AB - Reduced activation of energy metabolism increases adiposity in humans and other mammals. Thus, exploring dietary and molecular mechanisms able to improve energy metabolism is of paramount medical importance because such mechanisms can be leveraged as a therapy for obesity and related disorders. Here, we show that a designer protein-deprived diet enriched in free essential amino acids can 1) promote the brown fat thermogenic program and fatty acid oxidation, 2) stimulate uncoupling protein 1 (UCP1)-independent respiration in subcutaneous white fat, 3) change the gut microbiota composition, and 4) prevent and reverse obesity and dysregulated glucose homeostasis in multiple mouse models, prolonging the healthy life span. These effects are independent of unbalanced amino acid ratio, energy consumption, and intestinal calorie absorption. A brown fat-specific activation of the mechanistic target of rapamycin complex 1 seems involved in the diet-induced beneficial effects, as also strengthened by in vitro experiments. Hence, our results suggest that brown and white fat may be targets of specific amino acids to control UCP1-dependent and -independent thermogenesis, thereby contributing to the improvement of metabolic health.