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Epigenetic Regulation

Epigenetic Regulation

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...

Epigenetic Regulation

Epigenetic Regulation

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

Epigenetic Regulation

Epigenetic Regulation

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

Genomic Imprinting and Inheritance

Genomic Imprinting and Inheritance

Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...

Inheritance of Chromatin Structures

Inheritance of Chromatin Structures

Epigenetics is the study of inherited changes in a cell's phenotype without changing the DNA sequences. It provides a form of memory for the differential gene expression pattern to maintain cell lineage, position-effect variegation, dosage compensation, and maintenance of chromatin structures such as telomeres and centromeres. For example, the structure and location of the centromere on chromosomes are epigenetically inherited. Its functionality is not dictated or ensured by the underlying DNA...

Histone Modification

Histone Modification

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
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone deacetylase,...

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Related Experiment Video

Updated: May 9, 2026

Methylated DNA Immunoprecipitation

Methylated DNA Immunoprecipitation

Published on: January 2, 2009

DNA demethylation: where genetics meets epigenetics.

Xiaofei Zhang, Rongguo Fu, Jie Yu

¹Department of Immunology, Mayo Clinic, College of Medicine, 200 First Street, SW, Rochester, MN 55905, USA. wu.xiaosheng@mayo.edu.

Current Pharmaceutical Design

|July 30, 2013

Summary

This review highlights DNA demethylation, a key epigenetic process crucial for cell development and function. Understanding DNA demethylation is vital for maintaining healthy gene expression and cellular well-being.

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Last Updated: May 9, 2026

Methylated DNA Immunoprecipitation

Methylated DNA Immunoprecipitation

Published on: January 2, 2009

Enhanced Reduced Representation Bisulfite Sequencing for Assessment of DNA Methylation at Base Pair Resolution

Enhanced Reduced Representation Bisulfite Sequencing for Assessment of DNA Methylation at Base Pair Resolution

Published on: February 24, 2015

Detection of Modified Forms of Cytosine Using Sensitive Immunohistochemistry

Detection of Modified Forms of Cytosine Using Sensitive Immunohistochemistry

Published on: August 16, 2016

Area of Science:

Epigenetics and Molecular Biology
Cellular and Developmental Biology

Background:

Epigenetic regulation ensures tissue-specific gene expression, vital for cellular health.
DNA methylation is a core epigenetic mechanism, with stable patterns maintained by methylation and demethylation.
While DNA methylation is well-studied, the DNA demethylation process remains less understood.

Purpose of the Study:

To review recent advancements in the DNA methylation/demethylation axis.
To emphasize the critical aspects of DNA demethylation in epigenetic regulation.

Main Methods:

Literature review of recent scientific publications.
Focus on studies investigating DNA demethylation mechanisms and roles.

Main Results:

Recent research has begun to elucidate the mechanisms of DNA demethylation.
Advances highlight the dynamic nature of DNA methylation patterns.

Conclusions:

DNA demethylation is a crucial, yet under-explored, component of epigenetic control.
Further research into DNA demethylation is essential for understanding cellular development and disease.