title: Effects of expanded human adipose tissue-derived mesenchymal stem cells on the viability of cryopreserved fat grafts in the nude mouse.
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 mesenchymal 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 difference 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.
authors: Stem Cell Research Center, RNL BIO Co, Ltd, Seoul 153-803, Republic of Korea.
authors: Myung-Soon
authors: MS
authors: Ko
authors: Ji-Youl
authors: JY
authors: Jung
authors: Il-Seob
authors: IS
authors: Shin
authors: Eun-Wha
authors: EW
authors: Choi
authors: Jae-Hoon
authors: JH
authors: Kim
authors: Sung Keun
authors: SK
authors: Kang
authors: Jeong Chan
authors: JC
authors: Ra
mesh_terms: D052438:Adipocytes, White / Q000473:pathology; D052436:Adipose Tissue, White / Q000166:cytology / Q000473:pathology / Q000637:transplantation*; D000818:Animals; D015925:Cryopreservation; D003560:Cysts / Q000473:pathology; D005355:Fibrosis / Q000473:pathology; D006085:Graft Survival / Q000502:physiology*; D006801:Humans; D007249:Inflammation / Q000473:pathology; D008297:Male; D045164:Mesenchymal Stem Cell Transplantation; D059630:Mesenchymal Stem Cells / Q000166:cytology*; D051379:Mice; D008807:Mice, Inbred BALB C; D008819:Mice, Nude; D009336:Necrosis / Q000473:pathology; D016378:Tissue Transplantation / Q000379:methods* / Q000473:pathology