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Una cascada de proteínas de unión al ADN para el compromiso sexual y el desarrollo en Plasmodium
Abhinav Sinha1, Katie R Hughes1, Katarzyna K Modrzynska2
1Wellcome Trust Centre for Molecular Parasitology, University of Glasgow.
Nature
|February 28, 2014
Resumen
Una proteína clave, PbAP2-G, impulsa el compromiso del desarrollo sexual en los parásitos de la malaria, lo que permite la transmisión del mosquito. Este descubrimiento revela un mecanismo molecular que podría ser utilizado para bloquear la transmisión de la malaria.
Área de la Ciencia:
- Biología molecular La biología molecular.
- Parasitología Parasitología.
- Genética La genética.
Sus antecedentes:
- El desarrollo sexual en los parásitos de Plasmodium es crucial para la transmisión a los mosquitos.
- Los mecanismos moleculares que regulan este compromiso han permanecido en gran parte desconocidos.
- Comprender estos mecanismos es vital para desarrollar estrategias de bloqueo de transmisión.
Objetivo del estudio:
- Identificar los factores moleculares responsables del compromiso con el desarrollo sexual en Plasmodium.
- Para aclarar el papel de los factores de transcripción del complejo apicomplejo AP2 (ApiAP2) en este proceso.
- Explorar objetivos potenciales para interrumpir la transmisión del parásito de la malaria.
Principales métodos:
- Análisis de deleción genética y mutación en Plasmodium berghei.
- Identificación y caracterización de los miembros de la familia ApiAP2.
- Investigación de la función génica en el desarrollo sexual de parásitos.
Principales resultados:
- PbAP2-G, una proteína de unión al ADN de ApiAP2, es esencial para el compromiso con el desarrollo sexual en P. berghei.
- Las mutaciones en PbAP2-G conducen a una pérdida del desarrollo sexual.
- Una segunda proteína ApiAP2, PbAP2-G2, modula la gametocitogénesis, lo que sugiere un mecanismo en cascada.
- Se propone un bucle de retroalimentación positiva que involucra a PbAP2-G en la gametocitogénesis.
Conclusiones:
- PbAP2-G juega un papel crítico en el compromiso con el desarrollo sexual en los parásitos de la malaria.
- Una cascada de proteínas ApiAP2 regula la gametocitogénesis.
- El mecanismo identificado ofrece un objetivo potencial para prevenir la transmisión de la malaria.
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