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La motilidad flagelar es necesaria para la viabilidad del torrente sanguíneo trypanosome
Richard Broadhead1, Helen R Dawe, Helen Farr
1Department of Biological Sciences, Lancaster University, Lancaster LA1 4YQ, UK.
Nature
|March 10, 2006
Resumen
El flagelo del parásito Trypanosoma brucei es esencial para su supervivencia. Su análisis proteómico revela proteínas únicas, que ofrecen nuevos objetivos para el tratamiento de la enfermedad del sueño africano.
Área de la Ciencia:
- Biología celular Biología celular.
- Parasitología Parasitología.
- La proteómica es la proteómica.
Sus antecedentes:
- Los cilios y las flagelos exhiben diversidad estructural (por ejemplo, 9 + 2 axonemas) y variación funcional (móvil vs. sensorial).
- El parásito protozoario flagelado Trypanosoma brucei causa la enfermedad del sueño africana, lo que requiere nuevas terapias farmacológicas.
Objetivo del estudio:
- Para llevar a cabo un análisis proteómico detallado del Trypanosoma brucei flagellum.
- Investigar las funciones funcionales de las proteínas flagelares utilizando la interferencia de ARN (RNAi).
- Para comparar los repertorios de proteínas flagelares entre eucariotas e identificar posibles objetivos farmacológicos.
Principales métodos:
- Análisis proteómico del flagelo del tripanosoma.
- Interferencia de ARN (RNAi) para el silenciamiento de genes y estudios funcionales.
- Metaanálisis postgenómico comparando el tripanosoma con otros eucariotas.
Principales resultados:
- Mapa proteómico detallado del flagelo del tripanosoma establecido.
- La ablación mediada por ARN de las proteínas flagelares causó un fallo de la citocinesis rápida en los tripanosomas de la forma del torrente sanguíneo.
- Identificación de numerosas proteínas flagelares evolutivamente antiguas y específicas del tripanosoma.
Conclusiones:
- La función flagelar es crítica para la viabilidad y división celular de Trypanosoma brucei en el torrente sanguíneo.
- El deterioro de la función flagelar presenta una estrategia potencial para el control de la enfermedad.
- Las proteínas flagelares específicas del tripanosoma ofrecen vías prometedoras para el desarrollo de fármacos selectivos.
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