恶性肿瘤转移机制研究新进展

被引：76

作者：

左衍海

施鑫

机构：

[1] 南方医科大学南京临床学院(南京军区南京总医院)骨科

来源：

医学研究生学报 | 2008年 / 03期

关键词：

肿瘤; 转移; 机制; 肿瘤干细胞;

D O I：

暂无

中图分类号：

R730.2 [肿瘤病理学、病因学];

学科分类号：

100214 [肿瘤学];

摘要：

肿瘤分为良性肿瘤和恶性肿瘤,两者的主要区别是后者有转移和复发倾向。转移是预后不良的征兆,也是癌症患者死亡的主要原因。肿瘤的转移是包括肿瘤细胞脱离原发灶侵入细胞外基质,侵袭附近血管和淋巴管而进入循环系统,并与血小板和靶点处内皮细胞黏附,并相互作用而穿出脉管系统,在靶点处形成新的克隆,有效地逃避机体免疫清除等事件在内的一系列"级联反应"。目前,已在少数实体瘤中分离出干细胞样细胞,即所谓的"肿瘤干细胞",这些细胞虽然数目极少,但有高度的成瘤性,有可能是肿瘤发生、发展及转移根源。

引用

页码：293 / 297

页数：5

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