Synthesis and biological evaluation of 2-alkylaminoethyl-1,1-bisphosphonic acids against Trypanosoma cruzi and Toxoplasma gondii targeting farnesyl diphosphate synthase

• Autores: Szajnman, Sergio H.; García Liñares, Guadalupe E.; Li, Zhu-Hong; Jiang, Cuiying; Galizzi, Melina; Bontempi, Esteban; Ferella, Marcela; Moreno, Silvia N.J.; Docampo, Roberto; Rodriguez, Juan B.
• Año de publicación: 2008
• Idioma: inglés
• Tipo de recurso: artículo
• Fuente: Bioorganic & Medicinal Chemistry 2008; 16(6): 3283-3290.
• Materia: Trypanosoma cruzi; Toxoplasmosis
• Institución: Administración Nacional de Laboratorios e Institutos de Salud "Dr. Carlos G. Malbrán"

Fil: Szajnman, Sergio H. Departamento de Química Orgánica and UMYMFOR (CONICET-FCEyN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires; Argentina.
Fil: García Liñares, Guadalupe E. Departamento de Química Orgánica and UMYMFOR (CONICET-FCEyN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires; Argentina.
Fil: Li, Zhu-Hong. Center for Tropical and Emerging Global Diseases and Department of Cellular Biology, University of Georgia, Athens; Estados Unidos.
Fil: Jiang, Cuiying. Center for Tropical and Emerging Global Diseases and Department of Cellular Biology, University of Georgia, Athens; Estados Unidos.
Fil: Galizzi, Melina. Center for Tropical and Emerging Global Diseases and Department of Cellular Biology, University of Georgia, Athens; Estados Unidos.
Fil: Bontempi, Esteban. ANLIS Dr.C.G.Malbrán. Instituto Nacional de Parasitología; Argentina. Ferella, Marcela. Center for Tropical and Emerging Global Diseases and Department of Cellular Biology, University of Georgia, Athens; Estados Unidos.
Fil: Moreno, Silvia N.J. Center for Tropical and Emerging Global Diseases and Department of Cellular Biology, University of Georgia, Athens; Estados Unidos.
Fil: Docampo, Roberto. Center for Tropical and Emerging Global Diseases and Department of Cellular Biology, University of Georgia, Athens; Estados Unidos.
Fil: Rodriguez, Juan B. Departamento de Química Orgánica and UMYMFOR (CONICET-FCEyN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires; Argentina.
The effect of a series of 2-alkylaminoethyl-1,1-bisphosphonic acids against proliferation of the clinically more relevant form of Trypanosoma cruzi, the etiologic agent of American trypanosomiasis (Chagas’ disease), and against tachyzoites of Toxoplasma gondii has been studied. Most of these drugs exhibited an extremely potent inhibitory action against the intracellular form of T. cruzi, exhibiting IC50 values at the low micromolar level. This cellular activity was associated with a strong inhibition of the enzymatic activity of T. cruzi farnesyl diphosphate synthase (TcFPPS), which constitutes a valid target for Chagas’ disease chemotherapy. Compound 17 was an effective agent against amastigotes exhibiting an IC50 value of 0.84 μM, while this compound showed an IC50 value of 0.49 μM against the target enzyme TcFPPS. Interestingly, compound 19 was very effective against both T. cruzi and T. gondii exhibiting IC50 values of 4.1 μM and 2.6 μM, respectively. In this case, 19 inhibited in at least two different enzymes of T. cruzi (TcFPPS and solanesyl diphosphate synthase (TcSPPS); 1.01 μM and 0.25 μM, respectively), while it inhibited TgFPPS in T. gondii. In general, this family of drugs was less effective against the activity of T. cruzi SPPS and against T. gondii growth in vitro. As bisphosphonate-containing compounds are FDA-approved drugs for the treatment of bone resorption disorders, their potential low toxicity makes them good candidates to control tropical diseases.