...
首页> 外文期刊>Cellular Signalling >Sphingosine kinase 2 prevents the nuclear translocation of sphingosine 1-phosphate receptor-2 and tyrosine 416 phosphorylated c-Src and increases estrogen receptor negative MDA-MB-231 breast cancer cell growth: The role of sphingosine 1-phosphate receptor-4
【24h】

Sphingosine kinase 2 prevents the nuclear translocation of sphingosine 1-phosphate receptor-2 and tyrosine 416 phosphorylated c-Src and increases estrogen receptor negative MDA-MB-231 breast cancer cell growth: The role of sphingosine 1-phosphate receptor-4

机译:鞘氨醇激酶2阻止鞘氨醇1-磷酸受体2和酪氨酸416磷酸化的c-Src的核易位并增加雌激素受体阴性MDA-MB-231乳腺癌细胞的生长:鞘氨醇1-磷酸受体4的作用

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

We demonstrate that pre-treatment of estrogen receptor negative MDA-MB-231 breast cancer cells containing ectopically expressed HA-tagged sphingosine 1-phosphate receptor-2 (S1P_2) with the sphingosine kinase 1/2 inhibitor SKi (2-(p-hydroxyanilino)-4-(p-chlorophenyl)thiazole) or the sphingosine kinase 2 selective inhibitor (R)-FTY720 methyl ether (ROMe) or sphingosine kinase 2 siRNA induced the translocation of HA-tagged S1P_2 and Y416 phosphorylated c-Src to the nucleus of these cells. This is associated with reduced growth of HA-tagged S1P_2 over-expressing MDA-MB-231 cells. Treatment of HA-S1P2 over-expressing MDA-MB-231 cells with the sphingosine 1-phosphate receptor-4 (S1P_4) antagonist CYM50367 or with S1P_4 siRNA also promoted nuclear translocation of HA-tagged S1P_2. These findings identify for the first time a signaling pathway in which sphingosine 1-phosphate formed by sphingosine kinase 2 binds to S1P_4 to prevent nuclear translocation of S1P_2 and thereby promote the growth of estrogen receptor negative breast cancer cells.
机译:我们证明了鞘氨醇激酶1/2抑制剂SKi(2-(对-羟基苯胺基)含有雌激素受体阴性MDA-MB-231乳腺癌细胞的异位表达的HA-标记的鞘氨醇1-磷酸受体2(S1P_2)的预处理)-4-(对氯苯基)噻唑)或鞘氨醇激酶2选择性抑制剂(R)-FTY720甲醚(ROMe)或鞘氨醇激酶2 siRNA诱导HA标记的S1P_2和Y416磷酸化的c-Src向核转移这些细胞。这与过表达HA标签的S1P_2过表达的MDA-MB-231细胞的生长减少有关。用鞘氨醇1-磷酸受体4(S1P_4)拮抗剂CYM50367或用S1P_4 siRNA处理过表达HA-S1P2的MDA-MB-231细胞也促进了HA标记的S1P_2的核易位。这些发现首次确定了由鞘氨醇激酶2形成的鞘氨醇1-磷酸与S1P_4结合以阻止S1P_2的核易位并从而促进雌激素受体阴性乳腺癌细胞生长的信号通路。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号