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Updated: Aug 16, 2026

Protein Purification-free Method of Binding Affinity Determination by Microscale Thermophoresis

Protein Purification-free Method of Binding Affinity Determination by Microscale Thermophoresis

Published on: August 15, 2013

Aumento de la actividad de unión al ADN de una proteína relacionada con Stat3 en células transformadas por la

C L Yu¹, D J Meyer, G S Campbell

¹Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor 48109, USA.

Science (New York, N.Y.)

|July 7, 1995

Resumen

El oncogén Src activa los transductores de señales y los activadores de la transcripción (STAT), específicamente Stat3. Esta activación constitutiva de la señalización STAT por Src puede contribuir al desarrollo del cáncer.

Área de la Ciencia:

Biología Molecular Biología Molecular
Oncología Oncología.
La señalización celular de las células.

Sus antecedentes:

Los transductores de señales y los activadores de la transcripción (STAT) son mediadores clave de la expresión génica.
Las citocinas y los factores de crecimiento típicamente inducen la fosforilación y activación de la tirosina STAT.

Objetivo del estudio:

Para investigar la activación de la proteína STAT en células transformadas por el oncogén Src tirosina quinasa.
Para determinar si la oncoproteína Src puede activar constitutivamente las vías de señalización STAT.

Principales métodos:

Ensayos de movilidad electroforética.
Ensayos de especificidad de unión al ADN.
Pruebas de antigenicidad de ensayos.
Análisis de la fosforilación por tirosina de Stat3

Principales resultados:

Stat3 o un miembro relacionado de la familia STAT fue activado constitutivamente en células transformadas en Src.
Esta activación implicó la fosforilación por tirosina de Stat3.
La actividad de unión al ADN inducida se correlacionó con la transformación mediada por Src.

Conclusiones:

La oncoproteína Src puede activar las vías de señalización STAT.
La activación de Stat3 por Src sugiere un papel potencial para Stat3 en la oncogénesis inducida por Src.

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