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Lab Reports |

Fat Stem Cells

Tracy Hampton, PhD
JAMA. 2011;306(5):480. doi:10.1001/jama.2011.1088.
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Scientists conducting studies in mice have found a way to identify the progenitors of cells that make up fat tissue (Daquinag AC et al. Cell Stem Cell. 2011;9[1]:74-86). These fat stem cells—adipose stromal cells (ASCs)—are responsible for driving fat expansion that can lead to obesity.

Researchers at the University of Texas Health Science Center at Houston isolated a peptide that specifically homes to ASCs and used it to purify the corresponding ASC surface receptor. They found this to be a fragment of decorin, a protein regulating cell adhesion, proliferation, and migration. A search for proteins that bind to this fragment led them to resistin, a protein secreted by fat cells and a key regulator of metabolism, for which the receptor has been unknown.

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