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Related Concept Videos

Epigenetic Regulation01:37

Epigenetic Regulation

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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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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...
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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.
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Human Genetics01:28

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Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
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Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...
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Related Experiment Video

Updated: Jan 5, 2026

Methylated DNA Immunoprecipitation
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[Clinical implications of epigenetic changes].

Marcel M A M Mannens1,2

  • 1Amsterdam UMC, afd. Klinische Genetica, Amsterdam.

Nederlands Tijdschrift Voor Geneeskunde
|October 15, 2019
PubMed
Summary

Changes in DNA can cause disease by altering protein function. Epigenetic modifications, like DNA methylation, regulate gene activity without changing the DNA sequence and are reversible, offering therapeutic potential.

Area of Science:

  • Molecular Biology
  • Genetics
  • Epigenetics

Background:

  • Gene products (proteins) are encoded by DNA, and alterations can lead to disease.
  • Gene activity is influenced by DNA accessibility within chromatin, regulated by transcription factors.
  • Epigenetic processes, such as DNA methylation, control DNA accessibility without altering the nucleic sequence.

Purpose of the Study:

  • To explore the role of DNA accessibility in gene regulation.
  • To understand how epigenetic modifications influence gene activity and disease.
  • To highlight the therapeutic potential of reversible epigenetic changes.

Main Methods:

  • Analysis of DNA structure and chromatin organization.
  • Investigation of epigenetic mechanisms, including DNA methylation.

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  • Examination of the relationship between DNA accessibility, gene transcription, and disease.

    • Main Results:

    • Gene activity is significantly impacted by the accessibility of DNA to regulatory proteins.
    • Epigenetic modifications, particularly DNA methylation, are key regulators of DNA accessibility.
    • Disturbances in epigenetic processes can lead to disease, even without changes to the DNA sequence.

    Conclusions:

    • Epigenetic changes are crucial for regulating gene expression and maintaining cellular function.
    • Dysregulation of epigenetic processes is implicated in various diseases.
    • The reversible nature of epigenetic modifications presents promising avenues for disease treatment and recovery.