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Updated: Oct 9, 2025

Isolation and Functional Assessment of Human Breast Cancer Stem Cells from Cell and Tissue Samples
Published on: October 2, 2020
The Role of Breast Cancer Stem Cells in Chemoresistance and Metastasis in Triple-Negative Breast Cancer
Lin He1, Neda Wick1, Sharon Koorse Germans1
1Department of Pathology, University of Texas Southwestern Medical Center, 6201 Harry Hines Blvd, Dallas, TX 75235, USA.
Abstract:
Triple negative breast cancer (TNBC) remains an aggressive disease due to the lack of targeted therapies and low rate of response to chemotherapy that is currently the main treatment modality for TNBC. Breast cancer stem cells (BCSCs) are a small subpopulation of breast tumors and recognized as drivers of tumorigenesis. TNBC tumors are characterized as being enriched for BCSCs. Studies have demonstrated the role of BCSCs as the source of metastatic disease and chemoresistance in TNBC. Multiple targets against BCSCs are now under investigation, with the considerations of either selectively targeting BCSCs or co-targeting BCSCs and non-BCSCs (majority of tumor cells). This review article provides a comprehensive overview of recent advances in the role of BCSCs in TNBC and the identification of cancer stem cell biomarkers, paving the way for the development of new targeted therapies. The review also highlights the resultant discovery of cancer stem cell targets in TNBC and the ongoing clinical trials treating chemoresistant breast cancer. We aim to provide insights into better understanding the mutational landscape of BCSCs and exploring potential molecular signaling pathways targeting BCSCs to overcome chemoresistance and prevent metastasis in TNBC, ultimately to improve the overall survival of patients with this devastating disease.
Insights
Triple negative breast cancer (TNBC) is aggressive due to limited treatments. Targeting breast cancer stem cells (BCSCs) offers new hope for overcoming chemoresistance and preventing metastasis in TNBC patients.
Area of Science:
- Oncology
- Cancer Biology
- Translational Medicine
Background:
- Triple negative breast cancer (TNBC) presents significant therapeutic challenges due to its aggressive nature and poor response to conventional chemotherapy.
- Breast cancer stem cells (BCSCs) are implicated as key drivers of tumorigenesis, metastasis, and chemoresistance in TNBC.
- TNBC tumors exhibit a notable enrichment of BCSCs, highlighting them as critical therapeutic targets.
Purpose of the Study:
- To provide a comprehensive review of recent advancements in understanding the role of BCSCs in TNBC.
- To highlight the identification of cancer stem cell biomarkers and novel therapeutic targets in TNBC.
- To discuss ongoing clinical trials and potential molecular pathways for targeting BCSCs to improve patient outcomes.
Main Methods:
- Literature review of recent research on BCSCs in TNBC.
- Analysis of identified cancer stem cell biomarkers and therapeutic targets.
- Examination of clinical trial data for chemoresistant breast cancer treatments.
Main Results:
- BCSCs are recognized drivers of TNBC progression, metastasis, and therapeutic resistance.
- Numerous BCSCs targets are under investigation, with strategies focusing on selective or co-targeting approaches.
- Ongoing clinical trials are exploring novel therapies aimed at overcoming chemoresistance and preventing metastasis.
Conclusions:
- Targeting BCSCs holds significant promise for developing novel, effective therapies for TNBC.
- Understanding the mutational landscape and signaling pathways of BCSCs is crucial for overcoming chemoresistance and metastasis.
- Further research and clinical trials are essential to improve survival rates for patients with this aggressive disease.
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