title: 17-Beta estradiol enhances osteogenic and adipogenic differentiation of human adipose-derived stromal cells.
abstract: Adipose-derived stromal cells (ASCs) possess multiple differentiation potentials and may serve as a cell source, if effectively modulated, for regenerative medicine and tissue engineering. Due to estrogen's function in tissue and organ development through regulating cell proliferation and differentiation, we hypothesized that an estrogen supplement may effectively enhance the multiple differentiation potentials of human ASCs. 17-Beta estradiol (E2) was investigated for modulating in vitro osteogenic and adipogenic differentiation in human ASCs isolated from a healthy female donor. After ASCs' exposure to osteogenic and adipogenic differentiation medium supplemented with different concentrations of E2, osteogenic markers (alkaline phosphatase activity, extracellular matrix, calcium deposition, and osteocalcin expression) and adipogenic parameters (lipid accumulation and differentiated cell population) significantly improved. Estrogen's enhancement is dose dependent and linked to differing alpha and beta estrogen receptors. Our data preliminarily demonstrate that estrogen can modulate the differentiation, and potentially improve the efficiency of ASCs in stem cell-based tissue engineering and regeneration. However, further study is needed to verify the regulatory functions of estrogen on ASC differentiations of donors with different ages and genders.
authors.affiliation: Department of Orthodontics, University of Illinois at Chicago, Chicago, Illinois 60612-7211, USA. liuhong1@uic.edu
authors.forename: Liu
authors.initials: L
authors.lastname: Hong
authors.forename: Aylin
authors.initials: A
authors.lastname: Colpan
authors.forename: Ioana A
authors.initials: IA
authors.lastname: Peptan
authors.forename: Joseph
authors.initials: J
authors.lastname: Daw
authors.forename: Anne
authors.initials: A
authors.lastname: George
authors.forename: Carla A
authors.initials: CA
authors.lastname: Evans
mesh_terms: D017667:Adipocytes / Q000166:cytology* / Q000187:drug effects*; D018929:Cell Culture Techniques / Q000379:methods; D002454:Cell Differentiation / Q000187:drug effects; D002478:Cells, Cultured; D004305:Dose-Response Relationship, Drug; D004958:Estradiol / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D008875:Middle Aged; D010012:Osteogenesis / Q000187:drug effects*; D013234:Stem Cells / Q000166:cytology* / Q000187:drug effects*; D023822:Tissue Engineering / Q000379:methods*
chemical_list: D004958:Estradiol