Small-molecular modulators of cancer-associated epigenetic mechanisms

Yukihiro Itoh1, Takayoshi Suzuki, Naoki Miyata

  • 1Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Taishogun, Kyoto 603-8334, Japan.

Molecular Biosystems
|March 21, 2013
PubMed

Insights

Epigenetic mechanisms like DNA methylation and histone modification control gene expression and cellular functions. Aberrations in these epigenetic processes are linked to cancer, and small molecules targeting them are used in therapy.

Area of Science:

  • Molecular Biology
  • Genetics
  • Cancer Research

Background:

  • Epigenetic mechanisms, including DNA methylation and histone modifications, regulate gene expression without altering DNA sequence.
  • These mechanisms are crucial for cellular functions like cell cycle control, immune responses, and signal transduction.
  • Epigenetic aberrations are implicated in oncogenesis and cancer cell proliferation, with alterations found in numerous human cancers.

Purpose of the Study:

  • To review chemical epigenetics in the context of cancer therapy.
  • To focus on small molecules that modulate epigenetic mechanisms relevant to cancer treatment.

Main Methods:

  • Literature review of chemical-biological approaches and small molecules.
  • Analysis of epigenetic mechanisms (DNA methylation, histone modification) in cancer.

Main Results:

  • Epigenetic dysregulation is closely linked to cancer development.
  • Several small molecules targeting epigenetic mechanisms have been approved for cancer therapy.
  • Small molecules modulating DNA methylation and histone modification are key therapeutic agents.

Conclusions:

  • Chemical epigenetics offers promising avenues for cancer therapy.
  • Targeting DNA methylation and histone modification with small molecules is a validated strategy in oncology.
  • Further research into chemical epigenetics can lead to novel cancer treatments.

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.
Targeted Cancer Therapies02:57

Targeted Cancer Therapies

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.
There are several types of targeted therapies against specific...
Mitogens and the Cell Cycle02:38

Mitogens and the Cell Cycle

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA ends...