Better intelligence for the battle of the bulge

Identification of the factor that stimulates fat cell development could help fight obesity and diabetes.

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ILLINOIS - Few people want to be obese, but growing numbers are, and the problem is proving increasingly difficult to conquer. Obesity is obviously associated with taking in more calories than a person burns off. But fighting fat also means understanding how and why it develops, and two new studies have taken a giant step in coming up with some ideas. The studies, published in January 1 Genes and Development, have pinpointed a master switch that directs the formation of fat cells. They have also suggested a new strategy for treating obesity, and a way to improve on a class of widely prescribed diabetes drugs.

The studies showed that a steroid hormone receptor protein - the peroxysome proliferator-activated receptor g (PPAR-γ), specifically an isoform of the protein called PPAR-γ-2 - enables laboratory-grown fat cell precursors to form fat cells in response to signaling molecules. Earlier work had shown that gene-regulatory ...

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  • Dan Ferber

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