首页> 外文期刊>Neurochemistry International: The International Journal for the Rapid Publication of Critical Reviews, Preliminary and Original Research Communications in Neurochemistry >Depletion of intracellular Ca2+ store itself may be a major factor in thapsigargin-induced ER stress and apoptosis in PC12 cells.
【24h】

Depletion of intracellular Ca2+ store itself may be a major factor in thapsigargin-induced ER stress and apoptosis in PC12 cells.

机译:细胞内Ca2 +存储库本身的消耗可能是毒胡萝卜素诱导的ER应激和PC12细胞凋亡的主要因素。

获取原文
获取原文并翻译 | 示例
           

摘要

The mechanisms of intracellular calcium store depletion and store-related Ca(2+) dysregulation in relation to apoptotic cell death in PC12 cells were investigated at physiological temperatures with a leak-resistant fluorescent indicator dye Fura-PE3/AM by a cooled CCD imaging analysis system. Electron microscopic observations have shown thapsigargin (TG; 100 nM)-induced apoptosis in PC12 cells. Thorough starvation of stored Ca(2+) by BAPTA/AM (50 microM), or La(3+) (100 microM) enhanced while dantrolene (100 microM) attenuated the TG-induced apoptosis by preventing a calcium release from internal stores. An immunoblotting analysis revealed an enhanced expression of GRP78, the hallmark of endoplasmic reticulum (ER) stress when cells were treated by TG along with BAPTA/AM. These results indicate that the depletion of the intracellular Ca(2+) stores itself induces the ER stress and apoptosis in PC12 cells without any involvement of the capacitative calcium entry (CCE) or a sustained elevation of intracellular Ca(2+) concentrations ([Ca(2+)](i)).
机译:在生理温度下用耐泄漏的荧光指示剂染料Fura-PE3 / AM通过冷却的CCD成像分析研究了PC12细胞中细胞内钙存储耗竭和与存储相关的Ca(2+)失调与凋亡细胞死亡的关系。系统。电子显微镜观察显示毒胡萝卜素(TG; 100 nM)诱导PC12细胞凋亡。通过BAPTA / AM(50 microM)或La(3+)(100 microM)可以使饥饿的Ca(2+)彻底饥饿,而丹特林(100 microM)通过阻止钙从内部存储中释放来减轻TG诱导的细胞凋亡。免疫印迹分析显示,当用TG和BAPTA / AM处理细胞时,GRP78的表达增强,GRP78是内质网(ER)应激的标志。这些结果表明,细胞内Ca(2+)的耗尽本身会诱导PC12细胞中的ER应激和凋亡,而没有任何钙离子进入(CCE)的参与或细胞内Ca(2+)浓度的持续升高([ Ca(2 +)](i))。

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