title: Optimization of a culture medium for the differentiation of preadipocytes into adipocytes in a monolayer.
abstract: Our objective was to optimize a medium for preadipocyte differentiation into adipocytes.
  
  
  METHODS
  The differentiation medium contains fixed components as well as 7 variable ones. To perform this study, different experiments were designed and the study was carried out in 4 stages. The first two stages tested the influence of serum, dexamethasone, hydrocortisone and an cAMP activator. In the third stage, two new variables were added: rosiglitazone and insulin. In the final stage, the medium selected in stage 3 was validated. The differentiation selection criteria consisted of the number of mature adipocytes and adiponectin secretion.
  
  
  RESULTS
  We have shown that each variable was indispensable and that positive interactions occurred between some variables. No negative interactions were found and it was possible to optimize the concentration of each variable.
  
  
  CONCLUSIONS
  We selected the following medium, which provides optimal adipocyte size and adiponectin secretion: DMEM/HAMF12+10% Foetal Clone Serum (FCS)+2 nM triiodothyronine+10 nM hydrocortisone +0.5 mM IsoButyl Methyl Xanthine (IBMX)+500 nM dexamethasone+1 microM rosiglitazone+0.15 UI/ml insulin+antibiotics.
authors.affiliation: Laboratoire des Substituts Cutanés, Hôpital Edouard Herriot, Lyon, France.
authors.forename: C
authors.initials: C
authors.lastname: Lequeux
authors.forename: C
authors.initials: C
authors.lastname: Auxenfans
authors.forename: A
authors.initials: A
authors.lastname: Mojallal
authors.forename: M
authors.initials: M
authors.lastname: Sergent
authors.forename: O
authors.initials: O
authors.lastname: Damour
mesh_terms: D017667:Adipocytes / Q000166:cytology* / Q000502:physiology; D000273:Adipose Tissue / Q000166:cytology* / Q000502:physiology; D002454:Cell Differentiation; D049109:Cell Proliferation; D002478:Cells, Cultured; D003470:Culture Media / Q000737:chemistry / Q000378:metabolism*; D005260:Female; D006801:Humans; D013234:Stem Cells / Q000166:cytology* / Q000502:physiology; D017154:Stromal Cells / Q000166:cytology / Q000502:physiology; D023822:Tissue Engineering / Q000379:methods*
chemical_list: D003470:Culture Media