肿瘤血管内皮生长因子的自分泌机制研究进展

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长期以来 ,人们都认为 ,肿瘤细胞是以旁分泌的方式表达血管内皮生长因子 (VEGF) ,其选择性地作用于肿瘤血管内皮细胞上的特异性VEGF受体 (Flt 1和KDR ) ,并通过酪氨酸激酶介导的信号转导 ,调控内皮细胞分化和血管形成。但近年研究发现 ,肿瘤中很可能存在VEGF的自分泌机制。1 ? Tumor cells have long been considered to express, in a paracrine manner, vascular endothelial growth factor (VEGF), which selectively acts on specific vascular endothelial cell VEGF receptors (Flt 1 and KDR) and passes Tyrosine kinase-mediated signal transduction regulates endothelial cell differentiation and angiogenesis. However, recent studies have found that VEGF may exist autocrine mechanism of VEGF. 1 ?
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