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Escalas diferenciales de control de calidad de las proteínas

Suzanne Wolff¹, Jonathan S Weissman², Andrew Dillin¹

¹Department of Molecular and Cell Biology, Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA.

|April 1, 2014

Resumen

Las células poseen sistemas sofisticados de control de la calidad de las proteínas para evitar daños, plegamiento incorrecto y agregación, que están vinculados a diversas enfermedades. Estas defensas en capas protegen la salud celular del comportamiento dañino de las proteínas.

Área de la Ciencia:

Biología celular Biología celular.
La bioquímica es la bioquímica.
Biología Molecular Biología Molecular

Sus antecedentes:

Las proteínas son moléculas esenciales, pero son propensas al plegamiento incorrecto, daño y agregación.
La disfunción de las proteínas se asocia con numerosas enfermedades, incluidos los trastornos neurodegenerativos.

Objetivo del estudio:

Para resumir los mecanismos celulares que mantienen la homeostasis de las proteínas.
Para resaltar la importancia de las redes de control de calidad de proteínas en la salud celular.

Principales métodos:

Revisión de la literatura existente sobre las vías de plegamiento y degradación de las proteínas.
Análisis de las respuestas celulares al estrés proteotóxico.
Examen de las funciones de la chaperona y de la red de control de calidad.

Principales resultados:

Las células emplean sistemas de defensa multicapa para monitorear y mantener la integridad de las proteínas.
Estos sistemas operan desde el nivel de síntesis de proteínas individuales hasta la comunicación intercelular.
Las redes de acompañantes y los mecanismos de control de calidad resuelven activamente el daño de las proteínas.

Conclusiones:

Las defensas celulares contra las proteínas dañadas son cruciales para prevenir la toxicidad y las enfermedades.
La comprensión de estas redes ofrece información sobre las estrategias terapéuticas para las enfermedades de plegamiento erróneo de proteínas.

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