[Cancer epigenetics]

Dong Kyung Chang1

  • 1GI Cancer Research Lab, Department of Internal Medicine, Baylor University Medical Center, Dallas, Texas 75246, USA. dongc@BaylorHealth.edu

Insights

Epigenetics, involving gene changes without altering DNA sequence, plays a key role in cancer development. Reversible epigenetic modifications offer promising avenues for novel cancer therapies.

Area of Science:

  • Molecular Biology
  • Genetics
  • Cancer Research

Context:

  • Recent advancements in understanding cancer development.
  • Recognition of epigenetics as a crucial mechanism in carcinogenesis.
  • Identification of aberrant promoter CpG island hypermethylation and histone-directed chromatin remodeling.

Purpose:

  • To highlight the significance of epigenetics in cancer.
  • To explain how epigenetic changes contribute to cancer phenotypes.
  • To underscore the therapeutic potential of targeting epigenetic alterations.

Summary:

  • Epigenetics, which modifies gene expression without changing DNA sequence, is increasingly recognized in cancer development.
  • Mechanisms like CpG island hypermethylation and chromatin remodeling silence tumor suppressor genes.
  • Cancer cells utilize both genetic and epigenetic strategies for tumor progression.

Impact:

  • Epigenetic alterations are reversible, presenting unique therapeutic opportunities.
  • Research in cancer epigenetics holds promise for developing innovative treatment strategies.
  • Understanding these molecular events can lead to targeted therapies for various cancers.

Related Concept Videos

Epigenetic Regulation01:37

Epigenetic Regulation

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.
X-chromosome...
Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
Cancer02:18

Cancer

Cancers arise due to mutations in genes involved in the regulation of cell division, which leads to unrestricted cell proliferation. Modern science and medicine have made great strides in the understanding and treatment of cancer, including eradicating cancer in some patients. However, there is still no cure for cancer. This is largely due to the fact that cancer is a large group of many diseases.
Cancer-Critical Genes II: Tumor Suppressor Genes01:05

Cancer-Critical Genes II: Tumor Suppressor Genes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
Cancer-Critical Genes II: Tumor Suppressor Genes01:05

Cancer-Critical Genes II: Tumor Suppressor Genes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...