Related Experiment Video
Updated: Jun 27, 2026

09:44
Generation of Organ-conditioned Media and Applications for Studying Organ-specific Influences on Breast Cancer Metastatic Behavior
Published on: June 13, 2016
Breast cancer by proxy: can the microenvironment be both the cause and consequence?
Lone Rønnov-Jessen1, Mina J Bissell
1Department of Biology, University of Copenhagen, Universitetsparken 13, DK-2100 Copenhagen, Denmark. lronnov-jessen@bio.ku.dk
Trends in Molecular Medicine
|December 19, 2008
Summary
The breast tissue microenvironment significantly influences breast cancer development. Targeting these microenvironmental components offers promising therapeutic strategies for breast cancer.
Area of Science:
- Oncology
- Cell Biology
- Cancer Research
Background:
- Breast cancer development is influenced by systemic cues, including hormonal changes and microenvironmental modifications.
- Tumorigenesis involves alterations in the breast tissue microenvironment, characterized by basement membrane (BM) aberrations and changes in cellular composition.
Purpose of the Study:
- To investigate the role of the mammary gland microenvironment in maintaining organ integrity and initiating breast cancer.
- To explore the therapeutic potential of targeting the tumor microenvironment and its constituents.
Main Methods:
- Analysis of cellular and extracellular matrix components within the breast tissue microenvironment.
- Evaluation of the impact of microenvironmental changes on epithelial cell behavior and tumor initiation.
Main Results:
- The microenvironment, excluding epithelial cells, plays a crucial role in breast tissue integrity.
- Alterations in the microenvironment, such as loss of BM and myoepithelial cells and gain of myofibroblasts, are associated with tumor development.
Conclusions:
- The tumor microenvironment is instrumental in promoting and potentially initiating breast cancer.
- Targeting the tumor microenvironment presents a promising therapeutic avenue for breast cancer treatment.
Related Concept Videos
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
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...
Cancer Prevention
Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
Some...
Metastasis
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.
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
Tumor Progression
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
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.

