成骨细胞与纳米植入材料相互作用研究进展

骨植入材料与周围骨组织的骨整合对于材料的稳定性有着巨大影响,其中成骨细胞产生各种不同的蛋白质分子完成胞体与材料以及周围细胞的连接.这些蛋白质分子包括细胞外基质蛋白、细胞骨架蛋白和黏附蛋白等.实验证实:带有纳米表面结构的植入材料具有良好的生物相容性和理化特性;纳米表面粗糙程度大大增加,亲水性、电化学特性明显提高,更有利于细胞外基质蛋白等的黏附和相互作用,从而促进成骨细胞黏附、增殖和分化;纳米表面也能促进成骨细胞产生前列腺素E2(prostagIandin E2,PGE2)、转化生长因子β(transforming growth factor-β,TGF-β)等细胞因子,影响新骨形成.纳米表面骨植人材料及其对成骨细胞的影响的作用机制还有待进一步研究.

Advance in mechanism research of the interaction between bone plant on osteoblast

The conformity between bone implant and bone tissue plays an important role in osseointegration.Protein molecules such as extracellular matrix proteins,cytoskeletal proteins,and attachment proteins,which produced by osteoblasts,promote the attachment of osteoblasts to bone implant and the surrounding ceils.In vitro studies show that nano-plated implant material bears excellent biocompatibility and superior physical and chemical features.Nano-scale material has the advantage of high surface roughness,wettability and electrochemistry features which erdaance the adherence and interaction of extracellular matrix proteins and promotes the attachmerit,proliferation and differentiation of osteoblasts.The expression of cytokines,such as prostaglandin E2(PGE2)and transforming growth factor-β(TGF-β)are also increased in nano-structured bone implants which in turn promote the new bone formation.Further studies need to be done to explain the mechanism of the effect of nano-tructured bone implant on osteoblasts.