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Epigenetic Regulation

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 Regulation

Epigenetic Regulation

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

Phase II Reactions: Methylation Reactions

Phase II Reactions: Methylation Reactions

Methylation is a phase II biotransformation process involving the attachment of a methyl group to a substrate. Enzymes known as methyltransferases orchestrate this reaction.
The mechanism of methylation unfolds in two stages. The first stage sees a methyltransferase enzyme facilitating the transfer of a methyl group from S-adenosylmethionine (SAM) to the substrate, forming S-adenosylhomocysteine (SAH). The second stage involves further metabolism of SAH into homocysteine, which can be recycled...

Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test

Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test

In clinical practice, the direct measurement of hepatic blood flow to evaluate liver function presents significant challenges due to the intricate and specialized nature of the necessary techniques. Consequently, healthcare professionals often rely on empirical estimates derived from thorough patient examinations and liver function tests to gauge liver health. Among the tools at their disposal, the Child–Pugh and MELD scoring systems stand out for their ability to categorize and assess the...

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Related Experiment Video

Updated: May 10, 2026

Methyl-binding DNA capture Sequencing for Patient Tissues

Methyl-binding DNA capture Sequencing for Patient Tissues

Published on: October 31, 2016

Methylation and liver cancer.

Chiara Raggi¹, Pietro Invernizzi

¹Liver Unit and Center for Autoimmune Liver Diseases, Humanitas Clinical and Research Center, via Manzoni 56, Rozzano, MI, Italy.

Clinics and Research in Hepatology and Gastroenterology

|June 29, 2013

Summary

Epigenetic changes, particularly DNA methylation, drive liver cancer initiation and progression. This review highlights epigenetic reprogramming in liver cancer stem cells, crucial for understanding cancer evolution.

Area of Science:

Oncology
Epigenetics
Molecular Biology

Background:

Cancer evolution involves genetic and epigenetic alterations.
Epigenetics modifies gene expression without changing DNA sequence.
Epigenetic deregulation is key in liver carcinogenesis.

Purpose of the Study:

Review the role of DNA methylation in liver cancer.
Highlight epigenetic reprogramming in hepatic cancer stem cells.

Main Methods:

Literature review of epigenetic mechanisms in liver cancer.
Focus on DNA methylation and cancer stem cells.

Main Results:

DNA methylation significantly contributes to liver cancer initiation and progression.

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Genome-Wide Analysis of DNA Methylation in Gastrointestinal Cancer

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Continuous Fluorescence-Based Endonuclease-Coupled DNA Methylation Assay to Screen for DNA Methyltransferase Inhibitors

Continuous Fluorescence-Based Endonuclease-Coupled DNA Methylation Assay to Screen for DNA Methyltransferase Inhibitors

Published on: August 5, 2022

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Last Updated: May 10, 2026

Methyl-binding DNA capture Sequencing for Patient Tissues

Methyl-binding DNA capture Sequencing for Patient Tissues

Published on: October 31, 2016

Genome-Wide Analysis of DNA Methylation in Gastrointestinal Cancer

Genome-Wide Analysis of DNA Methylation in Gastrointestinal Cancer

Published on: September 18, 2020

Continuous Fluorescence-Based Endonuclease-Coupled DNA Methylation Assay to Screen for DNA Methyltransferase Inhibitors

Continuous Fluorescence-Based Endonuclease-Coupled DNA Methylation Assay to Screen for DNA Methyltransferase Inhibitors

Published on: August 5, 2022

Epigenetic reprogramming is fundamental to hepatic cancer stem cell biology.

Conclusions:

Epigenetic alterations, especially DNA methylation, are critical drivers of liver cancer.
Understanding epigenetic reprogramming in cancer stem cells offers new therapeutic avenues.