title: Culture effects of epidermal growth factor (EGF) and basic fibroblast growth factor (bFGF) on cryopreserved human adipose-derived stromal/stem cell proliferation and adipogenesis.
abstract: Previous studies have demonstrated that EGF and bFGF maintain the stem cell properties of proliferating human adipose-derived stromal/stem cells (hASCs) in vitro. While the expansion and cryogenic preservation of isolated hASCs are routine, these manipulations can impact their proliferative and differentiation potential. This study examined cryogenically preserved hASCs (n = 4 donors), with respect to these functions, after culture with basic fibroblast growth factor (bFGF) and epidermal growth factor (EGF) at varying concentrations (0-10 ng/ml). Relative to the control, cells supplemented with EGF and bFGF significantly increased proliferation by up to three-fold over 7-8 days. Furthermore, cryopreserved hASCs expanded in the presence of EGF and bFGF displayed increased oil red O staining following adipogenic induction. This was accompanied by significantly increased levels of several adipogenesis-related mRNAs: aP2, C/EBPalpha, lipoprotein lipase (LPL), PPARgamma and PPARgamma co-activator-1 (PGC1). Adipocytes derived from EGF- and bFGF-cultured hASCs exhibited more robust functionality based on insulin-stimulated glucose uptake and atrial natriuretic peptide (ANP)-stimulated lipolysis. These findings indicate that bFGF and EGF can be used as culture supplements to optimize the proliferative capacity of cryopreserved human ASCs and their adipogenic differentiation potential.
authors: Stem Cell Biology Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, USA.
authors: Teddi L
authors: TL
authors: Hebert
authors: Xiying
authors: X
authors: Wu
authors: Gang
authors: G
authors: Yu
authors: Brian C
authors: BC
authors: Goh
authors: Yuan-Di C
authors: YD
authors: Halvorsen
authors: Zhong
authors: Z
authors: Wang
authors: Cedric
authors: C
authors: Moro
authors: Jeffrey M
authors: JM
authors: Gimble
mesh_terms: D017667:Adipocytes / Q000166:cytology*; D000273:Adipose Tissue / Q000378:metabolism*; D000328:Adult; D018929:Cell Culture Techniques / Q000379:methods; D002454:Cell Differentiation; D049109:Cell Proliferation; D015925:Cryopreservation; D004815:Epidermal Growth Factor / Q000378:metabolism*; D005260:Female; D016222:Fibroblast Growth Factor 2 / Q000378:metabolism*; D006801:Humans; D008066:Lipolysis; D008875:Middle Aged; D017154:Stromal Cells / Q000378:metabolism*; D023822:Tissue Engineering / Q000379:methods
chemical_list: D016222:Fibroblast Growth Factor 2; D004815:Epidermal Growth Factor