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Epigenetic Regulation01:46

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Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
Histone Modification02:32

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The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
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Regulation of Metabolism01:19

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Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
Epigenetic Regulation01:37

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Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
Histone Modification02:32

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Updated: May 10, 2026

Sample Preparation to Bioinformatics Analysis of DNA Methylation: Association Strategy for Obesity and Related Trait Studies
14:56

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Published on: May 6, 2022

Conectando hilos: epigenética y metabolismo.

Sayako Katada1, Axel Imhof, Paolo Sassone-Corsi

  • 1Center for Epigenetics and Metabolism, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA.

Cell
|January 24, 2012
PubMed
Resumen
Este resumen es generado por máquina.

La dieta afecta la epigenética de la descendencia, lo que sugiere que las histonas sienten el metabolismo. Comprender cómo los niveles de metabolitos controlan los modificadores de la cromatina es clave para traducir los estados metabólicos en patrones estables de expresión génica.

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Área de la Ciencia:

  • Epigenética y biología molecular.
  • Regulación del metabolismo.
  • Control de la expresión génica, control de la expresión génica.

Sus antecedentes:

  • Se proponen enzimas modificadoras de la cromatina para mediar la herencia epigenética.
  • Los efectos dietéticos pueden transmitirse epigenéticamente a la descendencia.
  • Las histonas pueden funcionar como sensores metabólicos, vinculando el metabolismo a la expresión génica.

Objetivo del estudio:

  • Investigar el papel de las enzimas modificadoras de la cromatina en la herencia epigenética.
  • Para explorar cómo las histonas actúan como sensores metabólicos.
  • Comprender los mecanismos por los cuales las fluctuaciones de los metabolitos influyen en la modificación de la cromatina.

Principales métodos:

  • Investigando el vínculo entre la dieta y las modificaciones epigenéticas.
  • Analizando las modificaciones histónicas como indicadores del estado metabólico.
  • Estudiar el control espacial y temporal de los modificadores de la cromatina por los metabolitos.

Principales resultados:

  • La evidencia sugiere que los cambios epigenéticos inducidos por la dieta son hereditarios.
  • Las histonas parecen traducir las señales metabólicas en patrones de expresión génica.
  • Las fluctuaciones de los metabolitos regulan dinámicamente los modificadores de la cromatina.

Conclusiones:

  • Los modificadores de la cromatina juegan un papel crucial en la herencia epigenética.
  • Las histonas sirven como un puente entre el estado metabólico y la expresión génica.
  • Se necesita más investigación para dilucidar los mecanismos precisos de la regulación de la cromatina impulsada por los metabolitos.