title: Manipulation of selective cell adhesion and growth by surface charges of electrically polarized hydroxyapatite.
abstract: Adherence of cells to a surface, such as a biomaterial surface, can be significantly influenced by the surface charge on that material. The applicability of electrically charged hydroxyapatite ceramics to selective cell adhesion was examined, and we show that polarized hydroxyapatite has significant effects on cell growth and adhesion. The surface charge applied to polarized hydroxyapatite promotes (i) enhanced colony formation of osteoblast-like cells, (ii) activation of gap junctions, and (iii) specific orienting of neuroblastoma cells. These findings will be of great utility and have significance in applications of tissue engineering, for example, in potential treatments for osteoporosis.
authors.affiliation: Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062, Japan. ohgaki.bcr@tmd.ac.jp
authors.forename: M
authors.initials: M
authors.lastname: Ohgaki
authors.forename: T
authors.initials: T
authors.lastname: Kizuki
authors.forename: M
authors.initials: M
authors.lastname: Katsura
authors.forename: K
authors.initials: K
authors.lastname: Yamashita
mesh_terms: D002448:Cell Adhesion; D002455:Cell Division; D002516:Ceramics; D003584:Cytological Techniques; D017886:Durapatite / Q000737:chemistry*; D004563:Electrochemistry; D005347:Fibroblasts; D006801:Humans; D008855:Microscopy, Electron, Scanning; D008858:Microscopy, Phase-Contrast; D009447:Neuroblastoma; D010006:Osteoblasts; D013499:Surface Properties; D014407:Tumor Cells, Cultured
chemical_list: D017886:Durapatite