Capillary electrophoresis monitors changes in the electrophoretic behavior of mitochondrial preparations

Kathryn M. Fuller, Edgar A. Arriaga

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

The presence of electrical charges on the surface of an organelle is the source of the organelle's electrophoretic mobility. Recently, we reported that capillary electrophoresis with laser-induced fluorescence detection (CE-LIF) can be used to determine the electrophoretic mobility of individual mitochondria. Here, we describe the use of CE-LIF to monitor changes in the electrophoretic mobility distributions of: (i) mitochondria isolated from cultured NS-1 mouse hybridoma cells disrupted by nitrogen cavitation or mechanical homogenization; (ii) mitochondria isolated from rat liver and purified by gradient centrifugation before and after being frozen in liquid nitrogen; and (iii) mitochondria chemically transformed into mitoplasts. These results indicate that the organelle electrophoretic mobility observed by researchers is affected by preparation procedures and that CE-LIF is a complementary technique for monitoring the quality of mitochondrial preparations.

Original languageEnglish (US)
Pages (from-to)151-159
Number of pages9
JournalJournal of Chromatography B: Analytical Technologies in the Biomedical and Life Sciences
Volume806
Issue number2
DOIs
StatePublished - Jul 5 2004

Keywords

  • Electrophoretic mobility
  • Mitochondrial preparations

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