Related Experiment Video
Updated: May 25, 2026

Studying the Effects of Tumor-Secreted Paracrine Ligands on Macrophage Activation using Co-Culture with Permeable Membrane Supports
Published on: November 28, 2019
Expression of toll-like receptors on breast tumors: taking a toll on tumor microenvironment
Debika Bhattacharya1, Nabiha Yusuf
1Department of Dermatology and Skin Diseases Research Center, University of Alabama at Birmingham, 1670 University Boulvard, VH 566A, P.O. Box 202, Birmingham, AL 35294-0009, USA.
Abstract:
Breast cancer remains a major cause of death in women in the developed world. As Toll-like receptors (TLRs) are widely expressed on tumor cells and play important roles in the initiation and progression of cancer, they may thus serve as important targets and have an effective perspective on breast cancer treatment. Expression of TLRs on breast cancer cells and mononuclear inflammatory cells can promote inflammation and cell survival in the tumor microenvironment. Inflammation and cancer are related. It is well known that persistent inflammatory conditions can induce cancer formation, due to production of cytokines and chemokines, which play a crucial role in promoting angiogenesis, metastasis, and subversion of adaptive immunity. TLR signaling in tumor cells can mediate tumor cell immune escape and tumor progression, and it is regarded as one of the mechanisms for chronic inflammation in tumorigenesis and progression. This paper delineates the expression of various TLRs in promotion of inflammation and development of mammary tumors. Understanding the mechanisms through which TLRs on breast cancer cells and inflammatory cells regulate growth, survival, and metastatic progression can make them potential targets for breast cancer therapy.
Insights
Toll-like receptors (TLRs) expressed on breast cancer cells and inflammatory cells promote tumor growth and inflammation. Targeting these TLRs offers a promising new avenue for effective breast cancer treatment strategies.
Area of Science:
- Oncology
- Immunology
Background:
- Breast cancer is a leading cause of mortality in women globally.
- Toll-like receptors (TLRs) are implicated in cancer initiation and progression.
- Inflammation is closely linked to cancer development, promoting angiogenesis, metastasis, and immune evasion.
Purpose of the Study:
- To investigate the role of Toll-like receptors (TLRs) in breast cancer development and inflammation.
- To explore the expression of various TLRs in mammary tumors and their impact on the tumor microenvironment.
- To identify TLRs as potential therapeutic targets for breast cancer treatment.
Main Methods:
- The study delineates the expression patterns of various Toll-like receptors (TLRs).
- Mechanisms of TLR signaling in breast cancer cells and inflammatory cells were examined.
- The impact of TLRs on tumor growth, survival, and metastatic progression was investigated.
Main Results:
- Toll-like receptors (TLRs) are expressed on breast cancer cells and inflammatory cells within the tumor microenvironment.
- TLR expression promotes inflammation, cell survival, angiogenesis, and metastasis.
- TLR signaling contributes to tumor immune escape and progression.
Conclusions:
- Toll-like receptors (TLRs) play a significant role in promoting inflammation and the development of mammary tumors.
- Understanding TLR mechanisms in breast cancer offers potential therapeutic strategies.
- Targeting TLRs on tumor and inflammatory cells presents a promising approach for breast cancer therapy.
Related Concept Videos
The Tumor Microenvironment
The Tumor Microenvironment
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
