Analysis of gene function in Trypanosoma brucei using RNA interference.

Methods in molecular biology (Clifton, N.J.) (2004-04-23)
Appolinaire Djikeng, Shuiyuan Shen, Christian Tschudi, Elisabetta Ullu

Trypanosoma brucei, a flagellate protozoa of the family Trypanosomatidae, has become one of the model systems for unicellular pathogens to study fundamentally important biological phenomena. Currently, the method of choice to examine gene function in these organisms is RNA interference (RNAi). mRNA degradation is triggered by double-stranded RNA (dsRNA) produced in vivo from transgenes transcribed from opposing tetracycline (tet)-inducible T7 RNA polymerase promoters, or hairpin RNA transcribed from the tet-inducible procyclic acidic repetitive protein promoter. In this chapter, we describe some of the methods we employ for ablation of gene expression by RNAi in T. brucei with particular emphasis on transfection and cloning of procyclic cells, induction of dsRNA expression, isolation of RNA and analysis of dsRNA, and target mRNA.

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Phleomycin from Streptomyces verticillus, powder