高迁移率蛋白A2在肿瘤中的表达及作用机制

Expression and functional mechanism of high mobility group A2 in neoplasm

高迁移率蛋白A2（HMGA2）是一种非组蛋白染色质相关蛋白,其AT-钩结构能够特异性结合特定的DNA序列,主要功能是作为致癌基因和结构转录因子.HMGA2几乎在所有类型的恶性肿瘤中表达,与肿瘤的形成、发展以及不良预后密切相关.HMGA2在各个生物过程,包括细胞增殖、细胞周期、干细胞自我更新、上皮间质转化及DNA损伤修复中都起到了重要作用.深入研究高迁移率蛋白A2对肿瘤的影响及其作用机制具有重大意义.

The high mobility group A2 （HMGA2）,one of non-histone chromatin protein,can specificly bind to AT-rich DNA sequences by its AT-hook and work as oncofetal gene and architectural transcription factor.HMGA2 expresses in almost all kinds of malignant neoplasms,which is closely related to the formation,development and poor prognosis of the neoplasms.HMGA2 plays a very important role in every biological process including cell proliferation,cell cycle,stem cell self-renewal,epithelial-mesenchymal transition and DNA damage repair.It is of great significance to study the effect and mechanism of HMGA2 in neoplasms.