Comparison of the osteogenic capability of rat bone mesenchymal stem cells on collagen,collagen/hydroxyapatite,hydroxyapatite and biphasic calcium phosphate  

作　　者：Xiaoyu Sun Wen Su Xiaomin Ma Huaiying Zhang Zhe Sun Xudong Li 

机构地区：[1]National Engineering Research Center for Biomaterials,Sichuan University,Chengdu 610064,P.R.China

出　　处：《Regenerative Biomaterials》2018年第2期93-103,共11页再生生物材料（英文版）

基　　金：the Sichuan Provincial STP(No.2017JY0018);the National Basic Research Program of China(973 Program,No.2012CB933600).

摘　　要：Collagen(COL),collagen/hydroxyapatite(COL/HA),HA and biphasic calcium phosphate were prepared as representative bone grafting materials with composition analogous to bone,and their structural characteristics were analyzed.The rat bone mesenchymal stem cells(BMSCs)were further seeded onto four groups of materials,and BMSCs grown in basic medium and standard osteogenic medium were set as controls of a reference model to show the basic and osteogenic behavior of cells without the intervention of materials.Cellular behaviors were characterized,including proliferation,spreading morphology and expression of osteogenesis factors.The rat BMSCs proliferated properly with time on four groups of materials as well on two groups of controls,and typical cuboidal,polygonal and extremely-elongated morphologies of cells were observed.According to the real-time polymerase chain reaction data,a higher osteogenic gene expression level was dependent upon the growing morphology but not the proliferation rate of cells,and the osteogenic differentiation capacity of cells onto four groups of materials varied in specific genes.In general,BMSCs exhibited the highest osteogenic capacity onto COL/HA,but the poorest onto HA.The growing behaviors of cells on materials were further discussed in comparison with the cases of OC and BC of the reference model.The present attempt to comparatively analyze cell experimental data with a reference model is expected to be useful for revealing the difference in the osteogenic capability of MSCs onto materials or even the bioactivity of materials.

关 键 词：osteogenic differentiation spreading morphology mineralization of collagen BIOCERAMICS 

分 类 号：R32[医药卫生—人体解剖和组织胚胎学]