Three cell lines that represent different stages of adipogenesis were used: adipose-derived stem cells (ADSCs), human preadipocytes (HPAd), and human adipocytes (HAd). StemPro human ADSCs (Life Technologies) have the same phenotypic and functional characteristics as bone marrow-derived mesenchymal stem cells. ADSCs were maintained in MesenPRO RS basal medium plus Growth Supplement. HPAd were cultured in preadipocyte growth medium, whereas HAd were maintained in adipocyte differentiation medium according to the manufacturer’s instructions (Cell Application, Inc.).
Adipogenic differentiation was induced in Poietics bone marrow-derived hMSCs (Lonza) according to the manufacturer’s instructions. The PLS-derived cell line LS226 (link) was maintained in RPMI plus GlutaMAX (Life Technologies), 1× MEM Essential Vitamin Mix (BioWhittaker), 1× ITES (BioWhittaker), 1× penicillin/streptomycin/L-glutamine (Life Technologies), 1 mM sodium pyruvate (CellGro), 1× nonessential amino acids (NEAA) (Lonza), and 20% fetal bovine serum (Life Technologies).