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Spreading of Chromatin Modifications

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Related Experiment Video

Updated: May 4, 2026

Repressing Gene Transcription by Redirecting Cellular Machinery with Chemical Epigenetic Modifiers

Repressing Gene Transcription by Redirecting Cellular Machinery with Chemical Epigenetic Modifiers

Published on: September 20, 2018

New mitotic regulators released from chromatin.

Hideki Yokoyama¹, Oliver J Gruss¹

¹Zentrum für Molekulare Biologie der Universität Heidelberg, DKFZ-ZMBH Alliance , Heidelberg , Germany.

Frontiers in Oncology

|January 1, 2014

Summary

This summary is machine-generated.

Chromosomes actively organize mitosis by releasing regulators and producing RanGTP, ensuring faithful chromosome segregation. This process is crucial for preventing chromosomal instability and cancer development.

Keywords:

RanGTP chromatin remodeler microtubule-associated proteins microtubules mitosis nuclear pore complex proteins spindle

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Chromatin Immunoprecipitation ChIP in Mouse T-cell Lines

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Published on: June 17, 2017

Area of Science:

Cell Biology
Molecular Biology
Genetics

Background:

Faithful chromosome segregation by the mitotic spindle is essential for preventing aneuploidy and cancer.
Chromosomes were traditionally viewed as passive passengers during mitosis, but emerging evidence suggests active roles.

Purpose of the Study:

To investigate the active role of chromosomes in organizing mitosis beyond spindle formation.
To elucidate how chromosomes regulate mitotic events like spindle maintenance and chromosome segregation.

Main Methods:

Analysis of spindle assembly and maintenance mechanisms.
Investigation of the role of Ran GTPase (RanGTP) in mitotic regulation.
Studies on the dissociation of chromatin-associated proteins during mitosis.

Main Results:

Chromosomes actively produce RanGTP, which locally activates spindle assembly factors.
Chromosomes regulate spindle maintenance during anaphase, crucial for segregation.
Key mitotic regulators, including chromatin-remodeling factors and nuclear pore complex proteins, are released from chromatin to aid spindle assembly and maintenance.

Conclusions:

Chromosomes actively orchestrate their own segregation through the release of mitotic regulators and RanGTP production.
This active chromosome organization is vital for maintaining genomic stability and preventing cancer.