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© Research
Publication : Proceedings of the National Academy of Sciences of the United States of America

Conditional mutagenesis using site-specific recombination in Plasmodium berghei

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Proceedings of the National Academy of Sciences of the United States of America - 01 Oct 2004

Carvalho TG, Thiberge S, Sakamoto H, Ménard R

Link to Pubmed [PMID] – 15465918

Proc. Natl. Acad. Sci. U.S.A. 2004 Oct;101(41):14931-6

Reverse genetics in Plasmodium, the genus of parasites that cause malaria, still faces major limitations. Only red blood cell stages of this haploid parasite can be transfected. Consequently, the function of many essential genes in these and subsequent stages, including those encoding vaccine candidates, cannot be addressed genetically. Here, we establish conditional mutagenesis in Plasmodium by using site-specific recombination and the Flp/FRT system of yeast. Site-specific recombination is induced after cross-fertilization in the mosquito vector of two clones containing either the target sequence flanked by two FRT sites or the Flp recombinase. Parasites that have undergone recombination are recognized in the cross progeny through the expression of a fluorescence marker. This approach should permit to dissect the function of any essential gene of Plasmodium during the haploid phase of its life, i.e., during infection of salivary glands in the mosquito and infection of both the liver and red blood cells in the mammal.

http://www.ncbi.nlm.nih.gov/pubmed/15465918