Versatile control of Plasmodium falciparum gene expression with an inducible protein–RNA interaction

Stephen J. Goldfless, Jeffrey C. Wagner and Jacquin C. Niles ()
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Stephen J. Goldfless: Massachusetts Institute of Technology
Jeffrey C. Wagner: Massachusetts Institute of Technology
Jacquin C. Niles: Massachusetts Institute of Technology

Nature Communications, 2014, vol. 5, issue 1, 1-8

Abstract: Abstract The available tools for conditional gene expression in Plasmodium falciparum are limited. Here, to enable reliable control of target gene expression, we build a system to efficiently modulate translation. We overcame several problems associated with other approaches for regulating gene expression in P. falciparum. Specifically, our system functions predictably across several native and engineered promoter contexts, and affords control over reporter and native parasite proteins irrespective of their subcellular compartmentalization. Induction and repression of gene expression are rapid, homogeneous and stable over prolonged periods. To demonstrate practical application of our system, we used it to reveal direct links between antimalarial drugs and their native parasite molecular target. This is an important outcome given the rapid spread of resistance, and intensified efforts to efficiently discover and optimize new antimalarial drugs. Overall, the studies presented highlight the utility of our system for broadly controlling gene expression and performing functional genetics in P. falciparum.

Date: 2014
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DOI: 10.1038/ncomms6329

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