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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.
X-chromosome...
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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...
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Metastasis02:30

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Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
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Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
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The histone proteins in the nucleosomes are post-translationally modified (PTM) to increase or decrease access to DNA. The commonly observed PTMs are methylation, acetylation, phosphorylation, and ubiquitination of lysine amino acids in the histone H3 tail region. These histone modifications have specific meaning for the cell. Hence, they are called "histone code". The protein complex involved in histone modification is termed as "reader-writer" complex.
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Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
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Epigenetic Modifiers in Cancer Metastasis.

Die Hu1,2, Tianci Zhao3, Chenxing Xu2

  • 1Key Laboratory of Molecular Genetics between Kangda College of Nanjing Medical University and Suzhou Medical College of Soochow University, Suzhou 215123, China.

Biomolecules
|August 29, 2024
PubMed
Summary

Epigenetic modifications drive cancer metastasis by altering processes like cell migration and invasion. Understanding these epigenetic regulators offers new diagnostic and therapeutic strategies for metastatic cancer.

Keywords:
DNA methylationepigeneticshistone methylationmetastasisnon-coding RNAs

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Area of Science:

  • Oncology
  • Epigenetics
  • Cancer Biology

Background:

  • Metastasis is the leading cause of cancer mortality, involving complex molecular pathways.
  • Epigenetic modifications are increasingly recognized as critical regulators of cancer progression and metastasis.

Purpose of the Study:

  • To comprehensively review recent advances in the role of epigenetic modifiers in cancer metastasis.
  • To elucidate the crosstalk between epigenetic regulators in metastasis-associated processes.
  • To explore the diagnostic, therapeutic, and prognostic potential of epigenetic targets in metastatic cancer.

Main Methods:

  • Literature review of recent research on epigenetics and cancer metastasis.
  • Analysis of key epigenetic mechanisms including histone modifications, DNA methylation, and non-coding RNAs.
  • Examination of enhancer reprogramming, chromatin accessibility, and N6-methyladenosine (m6A) modifications.

Main Results:

  • Epigenetic modifiers significantly influence epithelial-mesenchymal transition (EMT), cancer cell migration, and invasion.
  • Crosstalk between various epigenetic regulators plays a crucial role in promoting tumor metastasis.
  • Specific epigenetic alterations are linked to distinct metastatic behaviors and patient outcomes.

Conclusions:

  • Epigenetic mechanisms are fundamental drivers of cancer metastasis.
  • Targeting epigenetic regulators holds promise for novel diagnostic and therapeutic strategies in metastatic cancers.
  • Further research into epigenetic crosstalk is essential for developing effective anti-metastasis treatments.