differentiation, and apoptosis. Sphingosine 1-phosphate, a sphingolipid catabolite, is mitogenic in fibroblasts and inhibits the chemotactic mobility and invasiveness of human tumor cells. Sphingosine 1-phosphate degradation requires cleavage at the C2-3 carbon bond by sphingosine phosphate lyase. A yeast genetic approach was used to clone the first sphingosine phosphate lyase gene, BST1. BST1 overexpression
鞘脂引起多种真核细胞应答,大多数涉及细胞生长,分化和凋亡的调节。1-
磷酸鞘氨醇,一种鞘脂代谢物,在成纤维细胞中具有促有丝分裂作用,并抑制人肿瘤细胞的趋化性迁移和侵袭性。1-
磷酸鞘氨醇的降解需要通过
磷酸鞘氨醇裂解酶在C2-3碳键处裂解。酵母遗传方法用于克隆第一个
鞘氨醇磷酸裂解酶
基因BST1。BST1过表达赋予酵母对
鞘氨醇的抗性。BST1缺失产生对外源D-赤型-
鞘氨醇和
植物鞘氨醇的敏感性,以及暴露于外源
鞘氨醇后胞内1-
磷酸鞘氨醇的积累。