title: Comparative Study of Adipose-Derived Stem Cells From Abdomen and Breast.
abstract: BACKGROUND
  Abdominal tissue enriched with adipose-derived stem cells (ASCs) is often used in cell-assisted lipotransfer procedures for breast reconstruction. However, as the tissue microenvironment and stem cell niche play important roles in defining the characteristics of the resident cells, it is hypothesized that the stem cell population present in the donor abdominal tissue has dissimilar properties as compared with the cells in the recipient breast tissue, which may ultimately affect the long-term success of the graft.
  
  
  METHODS
  Adipose-derived stem cells were isolated from breast and abdominal fat tissues and characterized for mesenchymal-specific cell surface markers, and their population doubling, colony-forming capabilities, and proliferative properties were compared. The multilineage potential of both cell populations was also investigated.
  
  
  RESULTS
  Adipose-derived stem cells from both tissue sites were found to possess similar marker expression and multilineage differentiation potential. However, breast fat-derived ASCs were observed to have a higher self-renewal capability and an unstable population doubling as compared with abdominal fat-derived ASCs. Gene expression studies revealed that the breast fat-derived ASCs were predisposed to the osteogenic lineage and the abdominal fat-derived ASCs to the adipogenic lineage.
  
  
  CONCLUSIONS
  Cells derived from both fat tissues possess different characteristics in terms of their growth kinetics and predisposition to the osteolineages and adipolineages. In particular, ASCs from the abdominal tissue appear to contribute to adipose tissue turnover, whereas ASCs from breast tissue, if used for cell-assisted fat grafting, may potentially be responsible for complications in fat grafting, such as oil cysts, calcifications, fat necrosis, and tumors.
authors.affiliation: From the *School of Materials Science and Engineering, †School of Biological Science, Nanyang Technological University, Nanyang; ‡ Institute of Molecular and Cell Biology, Agency for Science Technology & Research (A*STAR), Biopolis; §KK Research Centre, KK Women's and Children's Hospital; ∥Singapore Bioimaging Consortium, Duke-NUS Graduate Medical School; ¶Division of Plastic, Reconstructive and Aesthetic Surgery, National University Hospital; and #Plastic, Reconstructive and Aesthetic Surgery Section, Tan Tock Seng Hospital, Singapore.
authors.forename: Vipra
authors.initials: V
authors.lastname: Guneta
authors.forename: Nguan Soon
authors.initials: NS
authors.lastname: Tan
authors.forename: Shigeki
authors.initials: S
authors.lastname: Sugii
authors.forename: Thiam Chye
authors.initials: TC
authors.lastname: Lim
authors.forename: Thien Chong Marcus
authors.initials: TC
authors.lastname: Wong
authors.forename: Cleo
authors.initials: C
authors.lastname: Choong
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000378:metabolism; D001940:Breast / Q000166:cytology*; D002454:Cell Differentiation / Q000502:physiology*; D049109:Cell Proliferation / Q000502:physiology*; D002478:Cells, Cultured; D060833:Cellular Microenvironment / Q000502:physiology; D003114:Colony-Forming Units Assay; D005260:Female; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000502:physiology*; D008875:Middle Aged; D050151:Subcutaneous Fat / Q000166:cytology*; D050507:Subcutaneous Fat, Abdominal / Q000166:cytology
chemical_list: D015415:Biomarkers