Gene replacement in Toxoplasma gondii with chloramphenicol acetyltransferase as selectable marker

Kami Kim, Dominique Soldati, John C. Boothroyd

Research output: Contribution to journalArticle

211 Scopus citations

Abstract

A system for stable transformation of Toxoplasma gondii tachyzoites was developed that exploited the susceptibility of Toxoplasma to chloramphenicol. Introduction of the chloramphenicol acetyltransferase (CAT) gene fused to Toxoplasma flanking sequences followed by chloramphenicol selection resulted in parasites stably expressing CAT. A construct incorporating the tandemly repeated gene, B1, targeted efficiently to its homologous chromosomal locus. Knockout of the single-copy gene, ROP1, was also successful. Stable transformation should permit the identification and analysis of Toxoplasma genes important in the interaction of this opportunistic parasite with its host.

Original languageEnglish (US)
Pages (from-to)911-914
Number of pages4
JournalScience
Volume262
Issue number5135
DOIs
StatePublished - Jan 1 1993

ASJC Scopus subject areas

  • General

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