Involvement of the Neutral Amino Acid Transporter SLC6A15 and Leucine in Obesity-related Phenotypes

Overview

Journal PLoS One

Specialties General Medicine
Science

Date 2013 Sep 12

PMID 24023709

Citations 16

Authors

Jana Drgonova

Josefin A Jacobsson

Joan C Han

Jack A Yanovski

Robert Fredriksson

Claude Marcus

Helgi B Schioth

George R Uhl

Affiliations

Soon will be listed here.

Abstract

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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