title: Platelet lysate as a serum substitute for 2D static and 3D perfusion culture of stromal vascular fraction cells from human adipose tissue.
abstract: Fetal bovine serum (FBS) and fibroblast growth factor (FGF)-2 are key supplements for the culture of stromal vascular fraction (SVF) cells from adipose tissue, both for typical monolayer (2D) expansion and for streamlined generation of osteogenic-vasculogenic grafts in 3D perfusion culture. The present study investigates whether factors present in human platelet lysate (PL) could substitute for FBS and FGF-2 in 2D and 3D culture models of SVF cells from human lipoaspirates. SVF cells were grown in medium supplemented with 10% FBS+FGF-2 or with 5% PL. In 2D cultures, PL initially supported SVF cell proliferation, but resulted in growth arrest shortly after the first passage. Freshly isolated SVF cells cultured with both media under perfusion for 5 days within 3D ceramic scaffolds induced bone formation after subcutaneous implantation in nude mice. However, blood vessels of donor origin were generated only using FBS+FGF-2-cultured cells. This was unexpected, because the proportion of CD34+/CD31+ endothelial lineage cells was significantly higher with PL than that of FBS+FGF-2 (33% vs. 3%, respectively). These results support the use of PL as a substitute of FBS+FGF-2 for short-term culture of human SVF cells, and indicate that more specific serum-free formulations are required to maintain a functionally vasculogenic fraction of SVF cells expanded under 3D perfusion.
authors.affiliation: Tissue Engineering Group, Laboratory 405, Department of Biomedicine, Institute for Surgical Research and Hospital Management, University Hospital Basel, Basel, Switzerland.
authors.forename: Andreas M
authors.initials: AM
authors.lastname: Müller
authors.forename: Michael
authors.initials: M
authors.lastname: Davenport
authors.forename: Sophie
authors.initials: S
authors.lastname: Verrier
authors.forename: Raoul
authors.initials: R
authors.lastname: Droeser
authors.forename: Mauro
authors.initials: M
authors.lastname: Alini
authors.forename: Chiara
authors.initials: C
authors.lastname: Bocelli-Tyndall
authors.forename: Dirk J
authors.initials: DJ
authors.lastname: Schaefer
authors.forename: Ivan
authors.initials: I
authors.lastname: Martin
authors.forename: Arnaud
authors.initials: A
authors.lastname: Scherberich
mesh_terms: D000273:Adipose Tissue / Q000166:cytology*; D000328:Adult; D000368:Aged; D000818:Animals; D001792:Blood Platelets / Q000378:metabolism*; D018929:Cell Culture Techniques / Q000379:methods*; D005260:Female; D005434:Flow Cytometry; D006801:Humans; D007150:Immunohistochemistry; D051379:Mice; D008875:Middle Aged; D044967:Serum / Q000378:metabolism*; D017154:Stromal Cells / Q000166:cytology*; D023822:Tissue Engineering / Q000379:methods*