Proliferation and bone-related gene expression of osteoblasts grown on hydroxyapatite ceramics sintered at different temperature
文献类型: 外文期刊
作者: Wang, CY 1 ; Duan, YR 2 ; Markovic, B 2 ; Barbara, J 2 ; Howlett, CR 2 ; Zhang, XD 2 ; Zreiqat, H 2 ;
作者机构: 1.Sichuan Univ, Engn Res Ctr Biomat, Chengdu 610064, Sichuan Prov, Peoples R China
2.Sichuan Univ, Engn Res Ctr Biomat, Chengdu 610064, Sichuan Prov, Peoples R China; Chinese Acad Fishery Sci, Yangtze Fisheries Inst, Jinzhou 434000, Hubei Prov, Peoples R China; Univ New S Wales, Sch Safety Sci, Chem Safety Lab, Sydney, NSW 2052, Australia; Univ New S Wales, Sch Safety Sci, Toxicol Lab, Sydney, NSW 2052, Australia; Univ New S Wales, Sch Med Sci, Dept Pathol, Bone Biomat Unit, Sydney, NSW 2052, Australia
关键词: hydroxyapatite ceramics;quantitative in situ hybridization;protein;cell proliferation;mRNA;gene expression
期刊名称:BIOMATERIALS ( 影响因子:12.479; 五年影响因子:12.104 )
ISSN: 0142-9612
年卷期: 2004 年 25 卷 15 期
页码:
收录情况: SCI
摘要: Human osteoblast-like cells SaOS-2 (ATCC HTB85) were seeded onto three kinds of hydroxyapatite (HA) ceramics sintered at different temperature (1200degreesC, 1000degreesC and 800degreesC). Scanning electron microscopy (SEM) was conducted to detect the surface microstructure. Cells were cultured on these substrates for 6 and 12 days and cell proliferation rate and mRNA expression for osteocalcin. osteonectin, type I collagen and alkaline phosphatase and protein production for osteocalcin, bone sialoprotein and osteonectin were detected with quantitative in situ hybridization and immunocytochemistry techniques. SEM revealed that crystal particle size was affected by sintering temperature. Result showed that cell proliferation rate on HA ceramics sintered at 1200degreesC was the highest. Osteonectin and type I collagen mRNA expression was not altered by sintering temperature. After 12 days in culture, bone sialoprotein, osteocalcin and osteonectin proteins levels were significantly (p < 0.05) higher when SaOS-2 cells were cultured on HA sintered at 1200degreesC, compared to the other two surfaces, suggesting that HA sintered at high temperature may be a better candidate for in vivo implantation. This result provides valuable information concerning the clinic application of HA ceramics sintered at different temperature. (C) 2003 Elsevier Ltd. All rights reserved.
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