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Related Concept Videos

Epigenetic Regulation01:46

Epigenetic Regulation

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Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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Epigenetic Regulation01:37

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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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T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
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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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Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for...
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Related Experiment Video

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Immunostaining for DNA Modifications: Computational Analysis of Confocal Images
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DNA Methylation in T-Cell Development and Differentiation.

Luis O Correa1, Martha S Jordan2, Shannon A Carty3

  • 1Graduate Program in Immunology, University of Michigan, Ann Arbor, MI.

Critical Reviews in Immunology
|August 5, 2020
PubMed
Summary
This summary is machine-generated.

DNA methylation, regulated by DNMT and TET enzymes, is crucial for T-cell development and differentiation. This epigenetic mechanism guides immune cell programming for effective responses to infection and cancer.

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Area of Science:

  • Immunology
  • Epigenetics
  • Molecular Biology

Background:

  • T lymphocytes require precise programming for immune functions.
  • Epigenetic modifications, like DNA methylation, are key to cell-fate decisions.
  • DNA methylation is mediated by DNA methyltransferases (DNMTs) and ten-eleven-translocation (TET) enzymes.

Purpose of the Study:

  • To review the role of DNA methylation in T-cell development.
  • To discuss the function of DNMT and TET enzymes in T-cell differentiation.
  • To highlight epigenetic regulation in immune cell programming.

Main Methods:

  • Literature review of epigenetic mechanisms in T-cells.
  • Analysis of the roles of DNMT and TET enzyme families.
  • Focus on CD4+ and CD8+ T-cell differentiation pathways.

Main Results:

  • DNA methylation patterns are critical for T-cell lineage specification.
  • DNMT and TET enzymes actively shape T-cell transcriptional programs.
  • Epigenetic regulation ensures context-specific immune responses.

Conclusions:

  • DNA methylation and its regulators are essential for T-cell development and differentiation.
  • Understanding these epigenetic processes is vital for controlling immune responses.
  • This review consolidates knowledge on DNA methylation's impact on T-cell fate.