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Introducción de las iminas de azometina a la biología química: Reacción bioortogonal con los isonitriles
Athanasios Markos1, Maurice Biedermann1, Johannes Heimgärtner1
1Laboratory of Organic Chemistry, ETH Zürich, D-CHAB, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland.
Journal of the American Chemical Society
|August 29, 2023
Resumen
Las nuevas iminas cíclicas de azometina (AMI) permiten reacciones bioortogonales en el agua. Esta ligadura biocompatible es ortogonal a otras reacciones, lo que permite un etiquetado biológico avanzado.
Área de la Ciencia:
- Química orgánica
- Biología Química
- La bioconjugación
Sus antecedentes:
- Las iminas de azometina son herramientas sintéticas útiles, pero generalmente requieren condiciones anidras.
- El desarrollo de nuevas reacciones bioortogonales para entornos acuosos es crucial para las aplicaciones biológicas.
Objetivo del estudio:
- Introducir las iminas cíclicas de azometina (AMI) para las reacciones bioortogonales en medios acuosos.
- Evaluar la estabilidad, la reactividad y la biocompatibilidad de estos IMA.
Principales métodos:
- Síntesis de las iminas C, N-cíclicas-N-acil azometina (AMI).
- Investigación de la reactividad de la IAM con isonitriles en condiciones fisiológicas.
- Imágenes de células vivas y experimentos de etiquetado de proteínas triples.
Principales resultados:
- Las IAM son estables bajo condiciones fisiológicas.
- La ligadura AMI-isonitril procede de forma rápida y quimioselectiva, incluso en presencia de nucleófilos biológicos.
- Se ha demostrado la biocompatibilidad mediante imágenes de células vivas.
- Se logró el etiquetado simultáneo de una triple proteína, mostrando ortogonalidad con SPAAC e iEDDA.
Conclusiones:
- Las iminas C, N-cíclicas-N-acil azometina representan una nueva clase de reactivos para la química acuosa bioortogonal.
- La ligadura AMI-isonitrilo es una herramienta robusta y versátil para la bioconjugación y el etiquetado de proteínas en sistemas biológicos complejos.
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