alexa Antagonism of central melanocortin receptors in vitro and in vivo by agouti-related protein.
Medicine

Medicine

Translational Medicine

Author(s): Ollmann MM, Wilson BD, Yang YK, Kerns JA, Chen Y,

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Abstract Expression of Agouti protein is normally limited to the skin where it affects pigmentation, but ubiquitous expression causes obesity. An expressed sequence tag was identified that encodes Agouti-related protein, whose RNA is normally expressed in the hypothalamus and whose levels were increased eightfold in ob/ob mice. Recombinant Agouti-related protein was a potent, selective antagonist of Mc3r and Mc4r, melanocortin receptor subtypes implicated in weight regulation. Ubiquitous expression of human AGRP complementary DNA in transgenic mice caused obesity without altering pigmentation. Thus, Agouti-related protein is a neuropeptide implicated in the normal control of body weight downstream of leptin signaling.
This article was published in Science and referenced in Translational Medicine

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