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Chromatin Immunoprecipitation- ChIP02:36

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Chromatin immunoprecipitation, or ChIP, is an antibody-based technique used to identify sites on DNA that bind to transcription factors of interest or histone proteins. It also helps determine the type of histone modifications such as acetylation, phosphorylation, or methylation.
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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.
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The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
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The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
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Repressing Gene Transcription by Redirecting Cellular Machinery with Chemical Epigenetic Modifiers
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Chromatin Remodulator CHD4: A Potential Target for Cancer Interception.

Krishnendu Goswami1, Karthikkumar Venkatachalam1, Surya P Singh1

  • 1Center for Cancer Prevention and Drug Development, Stephenson Cancer Center, Hem-Onc Section, Department of Medicine, University of Oklahoma HSC, Oklahoma City, OK 73104, USA.

Genes
|February 26, 2025
PubMed
Summary
This summary is machine-generated.

Chromodomain helicase DNA-binding 4 (CHD4) influences cancer development by altering gene accessibility. This chromatin remodulator is crucial for transcriptional reprogramming, impacting tumor cell proliferation and DNA damage responses.

Keywords:
CHD4cancerchromatin remodulationchromosomeepigeneticsnucleosome

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Area of Science:

  • Molecular Biology
  • Genetics
  • Cancer Biology

Background:

  • Cancer development involves genetic alterations and changes in gene network regulation.
  • Nucleosome remodeling ATPases, like CHD4, are key in controlling gene accessibility within the nucleus.
  • Chromodomain helicase DNA-binding 4 (CHD4) is an ATP-dependent chromatin remodulator involved in various cellular processes.

Purpose of the Study:

  • To review and synthesize existing data on the role of CHD4 in cancer.
  • To highlight CHD4's function in chromatin accessibility and transcriptional regulation in the context of cancer.

Main Methods:

  • Literature review of studies investigating CHD4 in cancer.
  • Analysis of CHD4's molecular domains and protein interactions.
  • Examination of CHD4's involvement in cancer progression, proliferation, DNA damage response, and immune modulation.

Main Results:

  • CHD4 possesses multiple domains for nucleosome mobilization and histone binding.
  • CHD4 is a critical component of Nucleosome Remodeling and Deacetylase (NuRD) complexes, facilitating transcriptional reprogramming.
  • Data indicate CHD4's significant role in tumor cell proliferation, DNA damage responses, and immune modulation.

Conclusions:

  • CHD4-mediated chromatin accessibility is fundamental for transcriptional reprogramming.
  • This reprogramming is intrinsically linked to tumor cell proliferation and overall cancer development.
  • CHD4 represents a significant target for understanding and potentially treating cancer.