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Updated: Dec 31, 2025

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Published on: December 5, 2018
Exosomes in triple negative breast cancer: Garbage disposals or Trojan horses?
Chia Yin Goh1, Cathy Wyse1, Matthew Ho1
1UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield Dublin, Dublin 4, Ireland; UCD School of Medicine, College of Health and Agricultural Sciences (CHAS), University College Dublin, Belfield Dublin, Dublin 4, Ireland.
Abstract:
Triple negative breast cancer (TNBC) is a breast cancer subtype which is particularly aggressive and invasive. The treatment of TNBC has been limited due to the lack of well-defined molecular targets. Exosomes are nano-sized extracellular vesicles that are released from virtually all cell types into the extracellular space. Due to their endocytic origin, exosomes carry valuable information from their cells of origin. Exosomes were first thought to serve as "garbage disposals" that eliminate unwanted cellular components. Later, they were found to be involved in the pathology of many diseases including cancer. Despite their established roles in multiple diseases, only a small number of studies have focused on the role of exosomes in TNBC. In this review, we outline the roles of exosomes in cancer progression, metastasis and drug resistance in this breast cancer subtype. We then further illustrate the potential roles of exosomes as diagnostic tools, therapeutic targets and delivery systems.
Insights
Triple negative breast cancer (TNBC) is aggressive, lacking treatment targets. Exosomes, tiny vesicles carrying cell information, show promise for TNBC diagnosis, therapy, and drug delivery, offering new avenues for this challenging cancer.
Area of Science:
- Oncology
- Cell Biology
- Nanotechnology
Background:
- Triple negative breast cancer (TNBC) is an aggressive subtype with limited therapeutic options due to a lack of specific molecular targets.
- Exosomes, nanoscale extracellular vesicles, are increasingly recognized for their roles in intercellular communication and disease pathology, including cancer.
Purpose of the Study:
- To review the multifaceted roles of exosomes in the progression, metastasis, and drug resistance of triple negative breast cancer.
- To explore the potential applications of exosomes as diagnostic biomarkers, therapeutic targets, and drug delivery systems for TNBC.
Main Methods:
- Literature review focusing on studies investigating exosome involvement in TNBC.
- Analysis of exosome content and function in the context of cancer biology.
Main Results:
- Exosomes contribute to TNBC progression, facilitate metastasis, and mediate drug resistance.
- Exosomes contain molecular cargo that can serve as potential biomarkers for TNBC diagnosis.
Conclusions:
- Exosomes represent a promising area of research for understanding and treating triple negative breast cancer.
- Harnessing exosomes offers potential for novel diagnostic tools, targeted therapies, and advanced drug delivery systems for TNBC.
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