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Rational modification of a candidate cancer drug for use against Chagas disease.


ABSTRACT: Chagas disease is one of the major neglected diseases of the world. Existing drug therapies are limited, ineffective, and highly toxic. We describe a novel strategy of drug discovery of adapting an existing clinical compound with excellent pharmaceutical properties to target a pathogenic organism. The protein farnesyltransferase (PFT) inhibitor tipifarnib, now in phase III anticancer clinical trials, was previously found to kill Trypanosoma cruzi by blocking sterol 14 alpha-demethylase (14DM). We rationally developed tipifarnib analogues that display reduced affinity for human PFT to reduce toxicity while increasing affinity for parasite 14DM. The lead compound has picomolar activity against cultured T. cruzi and is efficacious in a mouse model of acute Chagas disease.

SUBMITTER: Kraus JM 

PROVIDER: S-EPMC2715367 | biostudies-literature | 2009 Mar

REPOSITORIES: biostudies-literature

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Rational modification of a candidate cancer drug for use against Chagas disease.

Kraus James M JM   Verlinde Christophe L M J CL   Karimi Mandana M   Lepesheva Galina I GI   Gelb Michael H MH   Buckner Frederick S FS  

Journal of medicinal chemistry 20090301 6


Chagas disease is one of the major neglected diseases of the world. Existing drug therapies are limited, ineffective, and highly toxic. We describe a novel strategy of drug discovery of adapting an existing clinical compound with excellent pharmaceutical properties to target a pathogenic organism. The protein farnesyltransferase (PFT) inhibitor tipifarnib, now in phase III anticancer clinical trials, was previously found to kill Trypanosoma cruzi by blocking sterol 14 alpha-demethylase (14DM). W  ...[more]

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