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Master Transcription Regulators02:23

Master Transcription Regulators

Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
MAPK Signaling Cascades01:07

MAPK Signaling Cascades

Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
General Transcription Factors01:30

General Transcription Factors

Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
Transcription Factors02:16

Transcription Factors

Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
Transcription Factors02:16

Transcription Factors

Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
Combinatorial Gene Control02:33

Combinatorial Gene Control

Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
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Video Experimental Relacionado

Updated: May 24, 2026

Light-mediated Reversible Modulation of the Mitogen-activated Protein Kinase Pathway during Cell Differentiation and Xenopus Embryonic Development
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Published on: June 15, 2017

El factor de transcripción c-Maf controla el desarrollo y la función del receptor táctil.

Hagen Wende1, Stefan G Lechner, Cyril Cheret

  • 1Developmental Biology, Max Delbrück Center (MDC) for Molecular Medicine, Berlin, Germany.

Science (New York, N.Y.)
|February 21, 2012
PubMed
Resumen
Este resumen es generado por máquina.

El factor de transcripción c-Maf es esencial para la sensación táctil. Su mutación interrumpe el desarrollo y la función de los mecanorreceptores, afectando la detección de vibraciones de alta frecuencia en ratones y humanos.

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Área de la Ciencia:

  • La neurociencia es la neurociencia.
  • Biología Molecular Biología Molecular
  • Genética La genética.

Sus antecedentes:

  • El sentido del tacto involucra a las neuronas mecanosensoriales que detectan estímulos mecánicos.
  • Los datos moleculares limitados dificultan la comprensión del desarrollo, la diversidad y la función de los mecanorreceptores.

Objetivo del estudio:

  • Para investigar el papel del factor de transcripción c-Maf en la función mecano-sensorial.
  • Identificar actores moleculares clave en el desarrollo y la diversidad de los mecanorreceptores.

Principales métodos:

  • Análisis de ratones mutantes c-Maf para estudiar el desarrollo y la función de los mecanorreceptores.
  • Evaluación de la morfología del corpúsculo de Pacinian y la sensibilidad a las vibraciones de alta frecuencia.
  • Examen de sujetos humanos con mutaciones en el gen c-MAF.

Principales resultados:

  • c-Maf es crucial para la función mecanosensorial en ratones y humanos.
  • El desarrollo y la función de los mecanorreceptores de rápida adaptación, incluidos los corpúsculos de Pacinian, se ven afectados en ratones mutantes c-Maf.
  • Los corpúsculos pacinianos están atrofiados en ratones mutantes c-Maf, lo que se correlaciona con la sensibilidad reducida a las vibraciones de alta frecuencia en humanos con mutaciones c-MAF.

Conclusiones:

  • El factor de transcripción c-Maf es un regulador clave del desarrollo y la función de los mecanorreceptores.
  • c-Maf especifica el desarrollo y la función de los mecanorreceptores y sus órganos finales asociados.
  • Este hallazgo proporciona una visión molecular de la base de la diversidad y la función de la sensación táctil.