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The Tumor Microenvironment

The Tumor Microenvironment

Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...

The Tumor Microenvironment

The Tumor Microenvironment

Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...

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.

Adaptive Mechanisms in Cancer Cells

Adaptive Mechanisms in Cancer Cells

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.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...

Adaptive Mechanisms in Cancer Cells

Adaptive Mechanisms in Cancer Cells

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.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...

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Updated: May 25, 2026

Quantitative Immunohistochemistry of the Cellular Microenvironment in Patient Glioblastoma Resections

Quantitative Immunohistochemistry of the Cellular Microenvironment in Patient Glioblastoma Resections

Published on: July 31, 2017

Epigenetic changes in tumor microenvironment.

¹Department of Cytology, Post Graduate Institute of Medical Education and Research, Chandigarh, India. deypranab@hotmail.com

Indian Journal of Cancer

|February 2, 2012

Summary

This summary is machine-generated.

Tumor microenvironment, not just cancer cells, drives cancer development. Epigenetic changes, specifically gene promoter methylation in stromal cells, significantly influence tumor initiation and spread.

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An Integrated Platform for Genome-wide Mapping of Chromatin States Using High-throughput ChIP-sequencing in Tumor Tissues

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Published on: April 5, 2018

Area of Science:

Oncology
Molecular Biology
Epigenetics

Background:

Cancer development involves complex interactions between malignant cells and their surrounding microenvironment.
The tumor microenvironment plays a crucial role in carcinogenesis, influencing tumor progression.
Emerging evidence highlights the significance of epigenetic modifications within the tumor microenvironment.

Purpose of the Study:

To review the role of epigenetic alterations in the tumor microenvironment during carcinogenesis.
To discuss how gene promoter methylation in stromal cells contributes to cancer development.
To explore the impact of microenvironmental epigenetic changes on tumor initiation, proliferation, invasion, and metastasis.

Main Methods:

Literature review of recent evidence on tumor microenvironment and epigenetics.
Analysis of studies reporting gene promoter methylation in stromal cells of tumors.
Synthesis of findings on the functional consequences of microenvironmental epigenetic changes.

Main Results:

Distinct gene promoter methylation patterns are observed in the stromal cells of various malignant and pre-malignant tumors.
These epigenetic alterations in the tumor microenvironment are associated with key cancer hallmarks.
The tumor microenvironment's epigenetic landscape is critical for tumor cell behavior.

Conclusions:

Epigenetic changes within the tumor microenvironment are integral to the process of carcinogenesis.
Understanding these microenvironmental epigenetic modifications offers potential therapeutic targets.
The tumor microenvironment's role in cancer progression necessitates further investigation into epigenetic mechanisms.