Abstract
Glycans play a crucial role in a variety of physiological and pathological processes. In terms of skin, the sugar chain length, monosaccharide composition and structure of glycans change with age, and thus the changes in glycogens in skin cells are a potential biomarker of aging. The exogenous addition of structurally defined glycans is of great importance for delaying the skin aging process. Fortunately, a functional glycan named manno-oligosaccharide (DOMOS) from Dendrobium officinale was obtained herein by efficient enzymatic depolymerization and exerts anti-aging effects on human skin in vitro and in vivo together with human clinical studies. Further studies show that DOMOS exerts anti-aging effects by triggering the ECM process through a TGF-β/Smad-SIRT1 signalling pathway. This is the first study to concentrate on the beneficial effects of glycan degradation by a highly specific method on skin aging and provides an all-new solution to the skin aging problem that people are most concerned about.
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