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

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。

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.