Dermal fibroblasts are specialized cells deep in the skin that generate connective tissue and help the skin recover from injury. Some fibroblasts have the ability to convert into fat cells that reside under the dermis, giving the skin a plump, youthful look and producing a peptide that plays a critical role in fighting infections.
In a study published in Immunity on December 26, University of California San Diego School of Medicine researchers and colleagues show how fibroblasts develop into fat cells and identify the pathway that causes this process to cease as people age.
“We have discovered how the skin loses the ability to form fat during aging,” said Richard Gallo, MD, PhD, Distinguished Professor and chair of the Department of Dermatology at UC San Diego School of Medicine and senior author on study. “Loss of the ability of fibroblasts to convert into fat affects how the skin fights infections and will influence how the skin looks during aging.”
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