title: Influences of the recombinant artificial cell adhesive proteins on the behavior of human umbilical vein endothelial cells in serum-free culture.
abstract: To improve the safety of cellular therapy products, it is necessary to establish a serum-free cell culture method that can exclude animal-derived materials in order to avoid contamination with transmissible agents. It would be optimal if the proteins necessary to a serum-free culture could be provided as recombinant proteins. In this study, the influences of recombinant artificial cell adhesive proteins on the behavior of human umbilical vein endothelial cells (HUVECs) in serum-free culture were examined in comparison with the influence of plasma fibronectin (FN). The recombinant proteins used were Pronectin F (PF), Pronectin F PLUS (PFP), Pronectin L (PL), Retronectin (RN), and Attachin (AN). HUVECs adhered more efficiently on PF or PFP than on FN. No cells adhered on PL. Regarding the VEGF or bFGF-induced cell growth, the cells on PF and PFP proliferated at a similar rate to the cells on FN. RN and AN were less effective in supporting cell growth. Since cell adhesion on PF and PFP induced phosphorylation of focal adhesion kinase, they are thought to activate integrin-mediated intracellular signaling. The cells cultured on PF or PFP were able to produce prostaglandin I(2) or tissue-plasminogen activator in response to thrombin. However, thrombin caused detachment of the cells from PF but not from PFP or FN, meaning that the cells were able to adhere more tightly on PFP or FN than on PF. These data indicate that PFP could be applicable as a substitute for plasma FN.
authors.affiliation: Division of Biological Chemistry and Biologicals, National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo, Japan. watabe@nihs.go.jp
authors.forename: Akiko
authors.initials: A
authors.lastname: Ishii-Watabe
authors.forename: Toshie
authors.initials: T
authors.lastname: Kanayasu-Toyoda
authors.forename: Takuo
authors.initials: T
authors.lastname: Suzuki
authors.forename: Tetsu
authors.initials: T
authors.lastname: Kobayashi
authors.forename: Teruhide
authors.initials: T
authors.lastname: Yamaguchi
authors.forename: Toru
authors.initials: T
authors.lastname: Kawanishi
mesh_terms: D000595:Amino Acid Sequence; D002448:Cell Adhesion / Q000187:drug effects; D015815:Cell Adhesion Molecules / Q000494:pharmacology*; D049109:Cell Proliferation / Q000187:drug effects; D002478:Cells, Cultured; D016895:Culture Media, Serum-Free; D042783:Endothelial Cells / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D011464:Epoprostenol / Q000096:biosynthesis; D005343:Fibrinolytic Agents / Q000494:pharmacology; D005353:Fibronectins / Q000494:pharmacology*; D051417:Focal Adhesion Kinase 1 / Q000378:metabolism; D006801:Humans; D008969:Molecular Sequence Data; D010766:Phosphorylation; D011994:Recombinant Proteins / Q000494:pharmacology; D013917:Thrombin / Q000494:pharmacology; D010959:Tissue Plasminogen Activator / Q000096:biosynthesis
chemical_list: D015815:Cell Adhesion Molecules; D016895:Culture Media, Serum-Free; D005343:Fibrinolytic Agents; D005353:Fibronectins; D011994:Recombinant Proteins; C070367:ProNectin F; D011464:Epoprostenol; D051417:Focal Adhesion Kinase 1; C496050:PTK2 protein, human; D013917:Thrombin; D010959:Tissue Plasminogen Activator