Video Experimental Relacionado
Updated: Jul 6, 2026
10:33
Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors
Published on: October 26, 2015
La activación independiente de CDK del receptor de estrógeno por la ciclina D1
R M Zwijsen1, E Wientjens, R Klompmaker
1Department of Tumor Biology, Netherlands Cancer Institute (Antoni van Leeuwenhoekhuis), Amsterdam.
Cell
|February 7, 1997
Resumen
La ciclina D1 potencia la actividad del receptor de estrógeno (ER) y la transcripción génica, independientemente de su socio CDK. Esta nueva función mejora la regulación del crecimiento de las células mamarias, incluso sin estrógeno.
Área de la Ciencia:
- Biología Molecular Biología Molecular
- Biología celular Biología celular.
- Endocrinología Endocrinología.
Sus antecedentes:
- Los estrógenos y la ciclina D1 son reguladores cruciales de la proliferación de las células epiteliales mamarias.
- La señalización del receptor de estrógeno (ER) juega un papel clave en el crecimiento de los tejidos sensibles al estrógeno.
Objetivo del estudio:
- Investigar un nuevo papel de la ciclina D1 en la regulación del crecimiento de los tejidos sensibles a los estrógenos.
- Para dilucidar el mecanismo por el cual la ciclina D1 influye en la transcripción génica mediada por el receptor de estrógeno.
Principales métodos:
- Prueba para medir la actividad transcripcional del receptor de estrógeno.
- Co-inmunoprecipitación para detectar la unión física entre la ciclina D1 y ER.
- Análisis de la unión de ER a los elementos de respuesta al estrógeno (EREs).
Principales resultados:
- La ciclina D1 potencia la transcripción mediada por ER independientemente de los socios CDK.
- La ciclina D1 activa la transcripción ER en ausencia y presencia de estrógeno.
- La ciclina D1 se une directamente al dominio de unión de la hormona ER, mejorando la unión del receptor a las EREs.
- Esta activación no es bloqueada por los antiestrógenos.
Conclusiones:
- La ciclina D1 actúa como un nuevo activador independiente de CDK del receptor de estrógeno.
- La interacción de la ciclina D1 con la ER mejora la transcripción génica, lo que afecta a la regulación del crecimiento en las células epiteliales de la mama.
Más Videos Relacionados
Videos de Conceptos Relacionados
01:45Positive Regulator Molecules
To consistently produce healthy cells, the cell cycle—the process that generates daughter cells—must be precisely regulated.
02:39Positive Regulator Molecules
Mitotic cell division results in daughter cells that exactly resemble the parent cell. However, errors in the DNA replication or distribution of genetic material may lead to genetic mutations that may be passed down to every new cell formed from the resulting abnormal cell. Propagation of such mutant cells is restricted through checkpoint mechanisms present at different stages of the cell cycle. These checkpoints involve regulator molecules that either promote or demote cell cycle events.
02:34Inhibition of Cdk Activity
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
02:15M-Cdk Drives Transition Into Mitosis
Checkpoints throughout the cell cycle serve as safeguards and gatekeepers, allowing the cell cycle to progress in favorable conditions and slow or halt it in problematic ones. This regulation is known as the cell cycle control system.
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
02:34Inhibition of CDK Activity
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
02:15M-Cdk Drives Transition Into Mitosis
Checkpoints throughout the cell cycle serve as safeguards and gatekeepers, allowing the cell cycle to progress in favorable conditions and slow or halt it in problematic ones. This regulation is known as the cell cycle control system.
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...