Method to improve the sensitivity of flow cytometric membrane potential measurements in mouse spinal cord cells.

Method to improve the sensitivity of flow cytometric membrane potential measurements in mouse spinal cord cells.
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提高小鼠脊髓细胞流式细胞术膜电位测量灵敏度的方法。

DOI:
10.1002/cyto.990130515
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发表时间:
1992
期刊:
Cytometry
影响因子:
--
通讯作者:
Mandler,RN
Mandler,RN
中科院分区:
--
文献类型:
--
作者:
Seamer,LC;Mandler,RN

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我们已经开发出一种技术,可以使用荧光、阴离子、电压敏感染料、DiBA-C4(3)(Oxonol)和流式细胞术来提高小鼠脊髓细胞相对膜电位测量的灵敏度。为了将细胞荧光主要归因于膜电位,通过将来自每个细胞的对数荧光信号除以其对数前向角光散射信号或对数侧散射信号来减小由于细胞大小和形状引起的信号变异性。用这些比率代替对数羟基酚荧光降低了分布的变异系数,而使平均荧光的变化基本不受影响。Kolmogorov-Smirnov对海人酸预刺激和后刺激(一种兴奋性氨基酸)的分析表明,使用这一比率技术提高了分析的灵敏度。
We have developers a technique to improve the sensitivity of relative membrane potential measurements in mouse spinal cord cells using the fluorescent, anionic, voltage sensitive dye, DiBa‐C4(3) (Oxonol) and flow cytometry. In order to attribute cellular fluorescence primarily to membrane potential, signal variability due to cell size and shape was reduced by dividing the log fluorescence signal from each cell by either its log forward angle light scatter or log side scatter signals. The use of these ratios in place of log oxonol fluorescence reduced the coefficient of variation of the distributions while leaving the changes in mean fluorescence largely unaffected. Kolmogorov‐Smirnov analysis of pre‐ vs. postkainate stimulation (an excitatory amino acid) showed improved sensitivity of the assay with the use of this ratio technique.
Oxonol 染料作为膜电位监测器:病毒和毒素对单层培养和悬浮动物细胞质膜电位的影响
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