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Related Concept Videos

Inheritance of Chromatin Structures03:17

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...
Chromatin Structure Regulates pre-mRNA Processing02:41

Chromatin Structure Regulates pre-mRNA Processing

In eukaryotic cells, nascent mRNA transcripts need to undergo many post-transcriptional modifications to reach the cell cytoplasm and translate into functional proteins. For a long time, transcription and pre-mRNA processing were considered two independent events that occur sequentially in the cell. However, it has now been well established that transcription and pre-mRNA processing are two simultaneous processes that are precisely regulated inside the cell.
The chromatin structure, especially...
Heterochromatin02:38

Heterochromatin

The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions that take up more dye are called heterochromatin. Heterochromatin is further classified into two forms – constitutive heterochromatin and facultative heterochromatin.
Constitutive heterochromatin: It is a highly compact region of chromatin that is mostly concentrated in the centromere and telomere. Unlike euchromatin, the amino acid at 9th...
Heterochromatin02:38

Heterochromatin

The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions that take up more dye are called heterochromatin. Heterochromatin is further classified into two forms – constitutive heterochromatin and facultative heterochromatin.
Constitutive heterochromatin: It is a highly compact region of chromatin that is mostly concentrated in the centromere and telomere. Unlike euchromatin, the amino acid at 9th...
Euchromatin01:01

Euchromatin

The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions take up more dye, appearing darker, while the less-compact areas take up less dye and appear lighter. Based on the compaction level, chromatins are classified into two primary forms – euchromatin and heterochromatin.
Euchromatin is the less dense region of the chromatin and stains lighter. Euchromatin contains histone H3 extensively...
Euchromatin01:01

Euchromatin

The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions take up more dye, appearing darker, while the less-compact areas take up less dye and appear lighter. Based on the compaction level, chromatins are classified into two primary forms – euchromatin and heterochromatin.
Euchromatin is the less dense region of the chromatin and stains lighter. Euchromatin contains histone H3 extensively...

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Related Experiment Video

Updated: Jun 15, 2026

Investigation of the Transcriptional Role of a RUNX1 Intronic Silencer by CRISPR/Cas9 Ribonucleoprotein in Acute Myeloid Leukemia Cells
09:16

Investigation of the Transcriptional Role of a RUNX1 Intronic Silencer by CRISPR/Cas9 Ribonucleoprotein in Acute Myeloid Leukemia Cells

Published on: September 1, 2019

Chromatin regulation by RUNX1.

Monika Lichtinger1, Maarten Hoogenkamp, Hanna Krysinska

  • 1Section of Experimental Haematology, Leeds Institute of Molecular Medicine, University of Leeds, St James's University Hospital, Leeds LS97TF, UK.

Blood Cells, Molecules & Diseases
|March 3, 2010
PubMed
Summary

RUNX1 is crucial for blood formation, opening chromatin for key genes during a specific developmental window. Its chromatin-opening role is context-dependent, cooperating with other factors.

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A Method to Study de novo Formation of Chromatin Domains
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A Method to Study de novo Formation of Chromatin Domains

Published on: August 23, 2019

Area of Science:

  • Hematopoiesis
  • Molecular Biology
  • Epigenetics

Background:

  • RUNX1 is essential for definitive hematopoiesis.
  • RUNX1 acts during a specific developmental window and cannot be replaced by other RUNX family members.
  • RUNX1 regulates hematopoietic genes but its chromatin opening activity is context-dependent.

Purpose of the Study:

  • To review recent findings on RUNX1's role in chromatin structure regulation.
  • To explore the context-dependent nature of RUNX1's chromatin opening activity.
  • To understand RUNX1's cooperation with alternate transcription factors in hematopoietic development.

Main Methods:

  • Literature review of recent studies on RUNX1 and chromatin regulation.
  • Analysis of molecular mechanisms underlying RUNX1's function in hematopoiesis.
  • Synthesis of data on context-dependent chromatin opening by RUNX1.

Main Results:

  • RUNX1 is required for chromatin opening of hematopoietic regulator genes.
  • RUNX1 facilitates the formation, but not maintenance, of transcription factor complexes.
  • RUNX1's chromatin opening activity is context-dependent and involves cooperation with other factors.

Conclusions:

  • RUNX1 plays a critical, time-sensitive role in establishing hematopoietic gene expression through chromatin modification.
  • The context-dependent activity of RUNX1 highlights its intricate interactions with other transcription factors during development.
  • Understanding RUNX1's epigenetic regulation provides insights into hematopoietic stem cell biology and potential therapeutic targets.