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    • 10. 发明授权
    • Controlled electroporation and mass transfer across cell membranes
    • 受控的电穿孔和跨细胞膜的传质
    • US07718409B2
    • 2010-05-18
    • US11340176
    • 2006-01-25
    • Boris RubinskyYong Huang
    • Boris RubinskyYong Huang
    • C12N13/00C12N15/01C12N15/87
    • G01N33/48728C12M35/02C12N15/87
    • Electroporation is performed in a controlled manner in either individual or multiple biological cells or biological tissue by monitoring the electrical impedance, defined herein as the ratio of current to voltage in the electroporation cell. The impedance detects the onset of electroporation in the biological cell(s), and this information is used to control the intensity and duration of the voltage to assure that electroporation has occurred without destroying the cell(s). This is applicable to electroporation in general. In addition, a particular method and apparatus are disclosed in which electroporation and/or mass transfer across a cell membrane are accomplished by securing a cell across an opening in a barrier between two chambers such that the cell closes the opening. The barrier is either electrically insulating, impermeable to the solute, or both, depending on whether pore formation, diffusive transport of the solute across the membrane, or both are sought. Electroporation is achieved by applying a voltage between the two chambers, and diffusive transport is achieved either by a difference in solute concentration between the liquids surrounding the cell and the cell interior or by a differential in concentration between the two chambers themselves. Electric current and diffusive transport are restricted to a flow path that passes through the opening.
    • 通过监测电气阻抗(以本文定义为电穿孔细胞中的电流与电压之比),以受控的方式在单个或多个生物细胞或生物组织中进行电穿孔。 阻抗检测生物细胞中电穿孔的发生,并且该信息用于控制电压的强度和持续时间,以确保电穿孔已经发生而不破坏细胞。 这适用于一般的电穿孔。 此外,公开了一种特定的方法和装置,其中穿过细胞膜的电穿孔和/或质量传递通过将细胞固定在两个室之间的屏障中的开口上而使细胞封闭开口来实现。 屏障是电绝缘的,不溶于溶质的,或两者都是,这取决于是否需要孔形成,溶质在膜上的扩散传输或两者。 通过在两个室之间施加电压来实现电穿孔,并且通过围绕电池和电池内部的液体之间的溶质浓度差或通过两个室本身之间的浓度差来实现扩散输送。 电流和漫射传输限于通过开口的流路。