Thursday, March 25, 2010

Separation of DNA-containing organelles from Toxoplasma gondii by CZE

Electrophoresis. 2010 Mar 23. [Epub ahead of print]

Separation of DNA-containing organelles from Toxoplasma gondii by CZE

Moe MK, Samuelsen PJ, Nielsen HV, Nielsen KM.

Department of Pharmacy, University of Tromsø, Tromsø, Norway.

Toxoplasma gondii and other members of the family Apicomplexa have two organelles, in addition to the nucleus, that contain DNA. Herein is reported the separation of the DNA-carrying organelles from T. gondii tachyzoites, i.e. the mitochondrion and the apicoplast, by CZE. The cells were stained with SYTO9, a dye that exhibit fluorescence when interacting with double stranded nucleic acids (e.g. DNA) and disrupted by nitrogen cavitation. Following careful removal of the heavier cellular material, the remaining lysate was injected on a CE instrument and the DNA-containing organelles were detected by LIF. The mitochondrion had longer migration time than the apicoplast, and the migration times were comparable in the replicates. This method should potentially also work for other members of the Apicomplexa including Plasmodium falciparum.

PMID: 20333721 [PubMed - as supplied by publisher]

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