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Contrasting effect of perlecan on adipogenic and osteogenic differentiation of mesenchymal stem cells in vitro

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Perlecan, a basement membrane component, shows diverse functions in different organs and tissues. However, the role of perlecan in differentiation of mesenchymal stem cells (MSCs) has been barely investigated. In this study, we examined the effect of perlecan on adipogenic and osteogenic differentiation of MSCs in vitro by adding extrinsic perlecan to culture media or blocking the function of intrinsic perlecan expressed into culture media by differentiating MSCs. Extrinsic perlecan suppressed adipogenic differentiation; however, it promoted osteogenic differentiation. These functions were further confirmed by a study of blocking intrinsic perlecan. Perlecan treated with heparitinase‐I also showed the suppressive effect on adipogenic differentiation. In contrast, the promotive effect on osteogenic differentiation was found to be heparan sulfate‐dependent. Intrinsic perlecan was suggested to be effective at the late stage of adipogenic differentiation by a study of perlecan‐blocking performed at distinct periods, but was suggested to be effective at the early stage of osteogenic differentiation. Our results showed perlecan has contrasting effect on adipogenic and osteogenic differentiation of MSCs due to its diverse actions. Based on these outcomes, we recognized that employing extrinsic perlecan or blocking intrinsic perlecan is effective for regulating adipogenic and osteogenic differentiation of MSCs by restricting its direction.
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Keywords: MSC; basement membrane; bone marrow; extracellular matrix; heparan sulfate proteoglycan

Document Type: Research Article

Publication date: March 1, 2014

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