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International Journal of Medical Sciences

.: Home > International Journal of Medical Sciences > 2011 > Volume 8 Number 3 > Myung-Soon Ko1,2, Ji-Youl Jung2, Il-Seob Shin1, Eun-Wha Choi3, Jae-Hoon Kim2, Sung Keun Kang1, Jeong Chan Ra1,

Effects of Expanded Human Adipose Tissue-Derived Mesenchymal Stem Cells on the Viability of Cryopreserved Fat Grafts in the Nude Mouse

Myung-Soon Ko1,2, Ji-Youl Jung2, Il-Seob Shin1, Eun-Wha Choi3, Jae-Hoon Kim2, Sung Keun Kang1, Jeong Chan Ra1,
1. Stem Cell Research Center, RNL BIO Co., Ltd, Seoul 153-803, Republic of Korea 2. College of Veterinary Medicine, Jeju National University, Jeju 690-756, Republic of Korea 3. Laboratory Animal Research Center, Samsung Biomedical Research Institute, 50 Irwon-dong Gangnam-gu, Seoul 135-710, Republic of Korea
Abstract :

Adipose-derived mesenchymal stem cells (AdMSCs) augment the ability to contribute to microvascular remodeling in vivo and to modulate vascular stability in fresh fat grafts. Although cryopreserved adipose tissue is frequently used for soft tissue augmentation, the viability of the fat graft is poor. The effects of culture-expanded human adipose tissue-derived mesen-chymal stem cells (hAdMSCs) on the survival and quality of the cryopreserved fat graft were determined. hAdMSCs from the same donor were mixed with fat tissues cryopreserved at –70°C for 8 weeks and injected subcutaneously into 6-week-old BALB/c-nu nude mice. Graft volume and weight were measured, and histology was evaluated 4 and 15 weeks post-transplantation. The hAdMSC-treated group showed significantly enhanced graft volume and weight. The histological evaluation demonstrated significantly better fat cell integrity compared with the vehicle-treated control 4 weeks post-transplantation. No significant dif-ference in graft weight, volume, or histological parameters was found among the groups 15 weeks post-transplantation. The hAdMSCs enhanced the survival and quality of transplanted cryopreserved fat tissues. Cultured and expanded hAdMSCs have reconstructive capacity in cryopreserved fat grafting by increasing the number of stem cells.

Keywords :
Human adipose tissue-derived mesenchymal stem cells (hAdMSCs), cryopreserved fat tissues, viability of fat grafts, dose-dependent.

Date Deposited : 04 Jul 2011 10:58

Last Modified : 04 Jul 2011 10:58

Official URL: http://www.medsci.org/

Volume 8, Number 3, - 2011 , ISSN 1449-1907

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