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Adipogenic differentiation of adipose tissue derived adult stem cells in nude mouse.

Choi YS, Cha SM, Lee YY, Kwon SW, Park CJ, Kim M

Asan Institute for life sciences, University of Ulsan, and Sein Aesthetic Plastic Surgery Clinic, Seoul 138-736, Republic of Korea.

We evaluated the use of a combination of adipose tissue derived adult stem cells (ADSCs) obtained from liposuction and injectable poly(lactic-co-glycolic acid) (PLGA) spheres for adipose tissue engineering. Adipogenesis was examined in nude mice injected subcutaneously with ADSCs (group I), PLGA spheres (group II), or ADSCs attached PLGA spheres (group III) cultured in adipogenic medium for 7 days. After 4 and 8 weeks, newly formed adipose tissue was observed in groups II and III but not in group I. Oil red O staining of newly formed tissue showed that there was substantially more tissue regeneration and adipogenic differentiation in group III than in group II. RT-PCR confirmed that, after 8 weeks, the PLGA-attached ADSCs had fully differentiated into adipocytes. This study provides significant evidence that ADSCs and PLGA spheres can be used in a clinical setting to generate adipose tissue as a noninvasive soft tissue filler.

Published 1 June 2006 in Biochem Biophys Res Commun, 345(2): 631-7.
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