Optimized nanosecond pulsed electric field therapy can cause murine malignant melanomas to self-destruct with a single treatment.

Optimized nanosecond pulsed electric field therapy can cause murine malignant melanomas to self-destruct with a single treatment.
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DOI:
10.1002/ijc.25364
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发表时间:
2010-10-01
影响因子:
6.4
通讯作者:
Nuccitelli, Pamela
Nuccitelli, Pamela
中科院分区:
医学1区
文献类型:
--
作者:
Nuccitelli, Richard;Tran, Kevin;Sheikh, Saleh;Athos, Brian;Kreis, Mark;Nuccitelli, Pamela

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我们已经确定了一种新的纳秒脉冲电场(nsPEF)疗法,能够通过单次治疗消除皮肤中的小鼠黑色素瘤。当使用这些优化的参数时,nsPEFs在没有热疗的情况下启动细胞凋亡。我们已经开发出与人类皮肤相容的新型抽吸电极,并将其应用于异种移植裸鼠黑色素瘤模型系统,以确定治疗小鼠黑色素瘤的最佳场强、脉冲频率和脉冲数。使用最佳脉冲参数(2000个脉冲,持续时间100 ns,幅度30 kV/cm,脉冲频率5-7脉冲/s)的单次治疗消除了4只小鼠中用这些参数治疗的所有17个黑素瘤。这是我们可以使用的最高脉冲频率,而不会将治疗的皮肤肿瘤温度提高到40 °C以上。我们还证明了nsPEF治疗的效果高度局限于仅位于电极之间的细胞,并且导致nsPEF治疗的皮肤的疤痕非常少。
We have identified a new, nanosecond pulsed electric field (nsPEF) therapy capable of eliminating murine melanomas located in the skin with a single treatment. When these optimized parameters are used, nsPEFs initiate apoptosis without hyperthermia. We have developed new suction electrodes that are compatible with human skin and have applied them to a xenograft nude mouse melanoma model system to identify the optimal field strength, pulse frequency and pulse number for the treatment of murine melanomas. A single treatment using the optimal pulse parameters (2000 pulses, 100 ns in duration, 30 kV/cm in amplitude at a pulse frequency of 5–7 pulses/s) eliminated all 17 melanomas treated with those parameters in 4 mice. This was the highest pulse frequency that we could use without raising the treated skin tumor temperature above 40 °C. We also demonstrate that the effects of nsPEF therapy are highly localized to only cells located between electrodes and results in very little scarring of the nsPEF-treated skin.
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