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Adipose tissue engineering in vivo with adipose-derived stem cells on naturally derived scaffolds

✍ Scribed by L. Flynn; G. D. Prestwich; J. L. Semple; K. A. Woodhouse

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
860 KB
Volume
89A
Category
Article
ISSN
1549-3296

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✦ Synopsis

Abstract

Placental decellular matrix (PDM) and PDM combined with cross‐linked hyaluronan (XLHA) scaffolds, seeded with primary human adipose‐derived stem cells (ASC), were investigated in a subcutaneous athymic mouse model. The in vivo response at 3 and 8 weeks was characterized using histological and immunohistochemical staining. Fibrous capsule formation was assessed and the relative number of adipocytes in each scaffold was quantified. Undifferentiated ASC were localized using immunostaining for human vimentin. Unilocular and multilocular adipocytes were identified by intracellular lipid accumulation. Staining for murine CD31 assessed implant vascularization. Both scaffolds macroscopically maintained their three‐dimensional volume and supported mature adipocyte populations in vivo. There was evidence of implant integration and a host contribution to the adipogenic response. The results suggested that incorporating the XLHA had a positive effect in terms of angiogenesis and adipogenesis. Overall, the PDM and PDM with XLHA scaffolds showed great promise for adipose tissue regeneration. © 2008 Wiley Periodicals, Inc. J Biomed Mater Res, 2009

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