中文摘要：

T-钙粘附素是钙粘附素家族中的一个特殊成员，缺乏跨膜区和胞浆区，是通过糖基磷脂酰肌醇附着于细胞膜上．T-钙粘附素的异常表达参与到多种肿瘤的发生发展过程中，如肿瘤细胞的凋亡、增殖、侵袭和转移等过程．T-钙粘附素还可能参与肿瘤新生血管的形成和胞内外的信号传导过程．本文就T-钙粘附素在肿瘤发生发展过程中的作用及分子机制作一综述，该蛋白有可能成为肿瘤治疗的新靶点．

英文摘要：

T-cadherin is a special member of the cadherin family, which is absent of the transmembrane and cytoplasmic domain and is anchored to the exterior surface of the plasma membrane through glyeosylphosphatidylinositol （GPI）. Down-regulation of T-cadherin was suggested to associated with the occurrence and development of various tumors, affecting the processed of cell proliferation, apoptosis, invasion and metastasis. In addition, T-cadherin was also found to be involved in the angiogenesis within tumors depending on extraeellular signals, which suggested that T-cadherin might be a potential factor to be considered for cancer therapy. We reviewed the functional studies on T-cadherin in connection with tumor development.