title: Flow cytometric cell cycle analysis of cultured brown bear fibroblast cells.
abstract: The aim of this study was to assess by flow cytometry the cell cycle of brown bear fibroblast cells cultured under different growth conditions. Skin biopsies were taken in Cantabria (Spain) from a live, anaesthetized brown bear. DNA analysis was performed by flow cytometry following cell DNA staining with propidium iodide. Serum starvation increased (P<0.01) the percentage of G0/G1 phase cells (92.7+/-0.86) as compared to cycling cells (39.7+/-0.86) or cells cultured to confluency (87.3+/-0.86). DMSO included for 48h in the culture significantly increased (P<0.01) the percentage of G0/G1 phase of the cell cycle at all concentrations used and decreased percentages of S phase in a dose-dependent fashion. Roscovitine increased the G0/G1 phase of the cell cycle (P<0.01) at 15microM concentration. Interestingly, the G2/M stage significantly increased at 30 and 50microM compared to the control and 15microM (P<0.02). The cell cycle of brown bear adult fibroblast cells can be successfully synchronized under a variety of culture conditions.
authors.affiliation: Area de Genética y Reproducción, SERIDA, Camino de los Claveles 604, 33203 Gijón, Principado de Asturias, Spain. jncaamano@serida.org
authors.forename: J N
authors.initials: JN
authors.lastname: Caamaño
authors.forename: A
authors.initials: A
authors.lastname: Rodriguez
authors.forename: A
authors.initials: A
authors.lastname: Salas
authors.forename: M
authors.initials: M
authors.lastname: Muñoz
authors.forename: C
authors.initials: C
authors.lastname: Diez
authors.forename: R S
authors.initials: RS
authors.lastname: Prather
authors.forename: E
authors.initials: E
authors.lastname: Gómez
mesh_terms: D000818:Animals; D002453:Cell Cycle / Q000187:drug effects; D003470:Culture Media; D004121:Dimethyl Sulfoxide / Q000494:pharmacology; D005347:Fibroblasts / Q000166:cytology* / Q000187:drug effects / Q000502:physiology; D005434:Flow Cytometry; D011687:Purines / Q000494:pharmacology; D000077546:Roscovitine; D001503:Ursidae
chemical_list: D003470:Culture Media; D011687:Purines; D000077546:Roscovitine; D004121:Dimethyl Sulfoxide