Journal
PLOS ONE
Volume 8, Issue 9, Pages -Publisher
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0068245
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Funding
- National Institute on Drug Abuse
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (NIH/DHHS)
- National Institute on Minority and Health Disparities (NIMHD), National Institutes of Health (NIH)
- Department of Health and Human Services
- Swedish Medical Research foundation
- Swedish Research Council
- Novo Nordisk Foundation
- Novo Nordisk Fonden [NNF13OC0005723] Funding Source: researchfish
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Brain pathways, including those in hypothalamus and nucleus of the solitary tract, influence food intake, nutrient preferences, metabolism and development of obesity in ways that often differ between males and females. Branched chain amino acids, including leucine, can suppress food intake, alter metabolism and change vulnerability to obesity. The SLC6A15 (v7-3) gene encodes a sodium-dependent transporter of leucine and other branched chain amino acids that is expressed by neurons in hypothalamus and nucleus of the solitary tract. We now report that SLC6A15 knockout attenuates leucine's abilities to reduce both: a) intake of normal chow and b) weight gain produced by access to a high fat diet in gender-selective fashions. We identify SNPs in the human SLC6A15 that are associated with body mass index and insulin resistance in males. These observations in mice and humans support a novel, gender-selective role for brain amino acid compartmentalization mediated by SLC6A15 in diet and obesity-associated phenotypes.
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