转化生长因子-β超家族成员在牙本质发生发育中的作用
Roles of transforming growth factor-β superfamily in dentinogenesis

摘要： 转化生长因子（TGF）超家族是一类在细胞分化、增殖和程序性死亡中参与调控的重要生长因子，具有相似的蛋白质高级结构，其中包括TGF-β、骨形态发生蛋白（BMP）和生长分化因子（GDF）、激活蛋白（ACT）和抑制蛋白等，它们通过其相应的受体介导转导信号。牙本质是牙体组织结构中的主要支持部分，由成牙本质细胞分泌的基质矿化而成。当成牙本质细胞分泌胞外基质并矿化时，TGF-β参与基质形成和矿化的调控，调控成牙本质细胞排列；BMP参与调节多种转录因子的表达，介导牙发生发育中上皮间质的相互作用；GDF在牙发生发育时调控牙周组织形成；ACT则调节细胞增殖分化，参与免疫应答，修复损伤等。本文就TGF-β超家族成员在牙本质发育中的作用等研究进展作一综述。
Abstract: Transforming growth factor(TGF)-β superfamily is a group of essential growth factors involved in the regulation of cell proliferation, differentiation, and apoptosis. TGF-β, bone morphogenetic protein(BMP), growth differentiation factor(GDF), activin(ACT), inhibin and so on, share a set of similar spatial structures of proteins. Dentin, as the important supportive part of tooth structure, is formed with mineralized matrix, which secreted by odontoblasts. During dentin formation, TGF-β1 participates in the regulation of matrix formation, mineralization, and the odontoblasts arrangement; BMP involved in the adjustment of many transcription factors’ expression and mediated epithelialmesenchymal interaction in dentification; while GDF play roles in periodontal development and ACT regulates cell metabolism, inmmune response, damage repairment and so on. This article reviewed the advances on the roles of TGF-β superfamily in dentinogenesis