High-throughput capillary-electrophoresis analysis of the contents of a single mitochondria.

High-throughput capillary-electrophoresis analysis of the contents of a single mitochondria.
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DOI:
10.1021/ac900099y
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发表时间:
2009-05-15
影响因子:
7.4
通讯作者:
Chiu, Daniel T.
Chiu, Daniel T.
中科院分区:
化学1区
文献类型:
--
作者:
Allen, Peter B.;Doepker, Byron R.;Chiu, Daniel T.

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我们提出了一种标记酸性细胞器内容物的技术,并利用激光诱导荧光快速释放、分离和检测它们的标记内容物。我们已经进行了溶液相分离的内容物的单个线粒体和单个100 nm的囊泡,这代表了一个演示的分析体积约1阿升。我们的策略,以标记的酸性内容的单光子依赖于使用的膜渗透性染料,俄勒冈州绿色二乙酸琥珀酰亚胺酯,和膜渗透性的基础,以提高线粒体内的pH值。为了测量的内容,我们利用玻璃微流控芯片和高电压梯度毫秒毛细管电泳分离后,单光子光解。我们观察到的异质性人口的线粒体相对于组成的化学成分。
We present a technique for labeling the contents of acidic organelles and rapidly releasing, separating, and detecting their labeled contents with laser-induced fluorescence. We have performed solution-phase separation of the contents of single mitochondria and single 100 nm vesicles, which represents a demonstration of an analyzed volume of ~1 attoliter. Our strategy to label the acidic contents of the mitochondrion relies on the use of the membrane-permeable dye, Oregon Green diacetate succinimidyl ester, and a membrane-permeable base to raise intra-mitochondrial pH. In order to measure the contents, we utilized a glass microfluidic chip and high voltage gradient for millisecond capillary-electrophoresis separation after single-mitochondrion photolysis. We observed heterogeneity among a population of mitochondria with respect to a constituent chemical component.
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