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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...

Histone Modification

Histone Modification

Master Transcription Regulators

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...

Histone Variants at the Centromere

Histone Variants at the Centromere

Histone variants are the histone proteins with structural and sequence variations. These variants may be regarded as “mutant” forms that replace their canonical histone counterparts in the nucleosomes. Specific post-translational modifications on the histone variants enable further chromatin complexity and regulate tissue-specific gene expression. The most common histone variants are from histone H2A, H2B, and linker histone H1 families. However, several variants of histone H3...

Spreading of Chromatin Modifications

Spreading of Chromatin Modifications

The histone proteins in the nucleosomes are post-translationally modified (PTM) to increase or decrease access to DNA. The commonly observed PTMs are methylation, acetylation, phosphorylation, and ubiquitination of lysine amino acids in the histone H3 tail region. These histone modifications have specific meaning for the cell. Hence, they are called "histone code". The protein complex involved in histone modification is termed as "reader-writer" complex.
Writers
The writer...

Chromatin Modification in iPS Cells

Chromatin Modification in iPS Cells

Chromatin modification alters gene expression; therefore, scientists can add histone-modifying enzymes, histone variants, and chromatin remodeling complexes to somatic cells to aid reprogramming into pluripotent stem (iPS) cells.
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...

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Related Experiment Video

Updated: Nov 7, 2025

Isolation and Cultivation of Neural Progenitors Followed by Chromatin-Immunoprecipitation of Histone 3 Lysine 79 Dimethylation Mark

Isolation and Cultivation of Neural Progenitors Followed by Chromatin-Immunoprecipitation of Histone 3 Lysine 79 Dimethylation Mark

Published on: January 26, 2018

Histone modifications centric-regulation in osteogenic differentiation.

Kun Li¹, Jinxiang Han^2,3, Ziqiang Wang^4,5

¹Department of Nuclear Medicine, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, 250014, Jinan, China.

Cell Death Discovery

|May 4, 2021

Summary

Histone modifications regulate gene expression and are crucial for osteogenic differentiation. Understanding these epigenetic mechanisms offers potential therapeutic targets for bone-related diseases.

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Last Updated: Nov 7, 2025

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Area of Science:

Epigenetics and Molecular Biology
Cellular and Developmental Biology

Background:

Histone modifications epigenetically control gene expression by altering chromatin structure and transcription factor accessibility.
Histone acetylation and crotonylation influence endocytosis and immune checkpoint genes in Alzheimer's disease and cancer.
Recent evidence highlights histone modifications' role in regulating osteogenic differentiation via marker gene expression.

Purpose of the Study:

To review and discuss histone modification-centric regulation of osteogenic gene expression.
To enhance understanding of histone modifications in osteogenic differentiation.
To explore the therapeutic potential of targeting histone modifications for related diseases.

Main Methods:

Literature review and synthesis of existing studies on histone modifications and osteogenic differentiation.
Analysis of research on epigenetic regulation of osteogenic marker genes.
Discussion of signaling pathways involved in histone modification-mediated osteogenesis.

Main Results:

Histone modifications are key regulators of osteogenic gene expression.
Specific histone modifications impact the expression of critical osteogenic markers.
Dysregulation of histone modifications can affect bone development and homeostasis.

Conclusions:

Histone modifications play a significant role in osteogenic differentiation.
Targeting histone modifications presents a promising therapeutic strategy for osteogenic differentiation-related diseases.
Further research into specific histone marks and their regulatory mechanisms is warranted.