Nanosecond pulsed electric field stimulation of reactive oxygen species in human pancreatic cancer cells is Ca(2+)-dependent.

Nanosecond pulsed electric field stimulation of reactive oxygen species in human pancreatic cancer cells is Ca(2+)-dependent.
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DOI:
10.1016/j.bbrc.2013.05.014
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发表时间:
2013-06-14
影响因子:
3.1
通讯作者:
Nuccitelli, Pamela
Nuccitelli, Pamela
中科院分区:
生物学4区
文献类型:
--
作者:
Nuccitelli, Richard;Lui, Kaying;Kreis, Mark;Athos, Brian;Nuccitelli, Pamela

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细胞对100 ns脉冲电场(NsPEF)的响应包括在质膜和细胞器膜上形成瞬时纳米孔,细胞内钙离子即刻增加,活性氧(ROS)增加,DNA片段化和caspase激活。100 ns,30 kV/cm nsPEF刺激ROS与脉冲数目成正比增加。这种增加被抗氧化剂Trolox以及细胞内和细胞外介质中存在的钙离子螯合剂所抑制。这表明,nsPEF触发的钙离子升高是ROS产生所必需的。
The cellular response to 100 ns pulsed electric fields (nsPEF) exposure includes the formation of transient nanopores in the plasma membrane and organelle membranes, an immediate increase in intracellular Ca2+, an increase in reactive oxygen species (ROS), DNA fragmentation and caspase activation. 100 ns, 30 kV/cm nsPEF stimulates an increase in ROS proportional to the pulse number. This increase is inhibited by the anti-oxidant, Trolox, as well as the presence of Ca2+ chelators in the intracellular and extracellular media. This suggests that the nsPEF-triggered Ca2+ increase is required for ROS generation.
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