Extracellular Vesicles as Mediators of Therapy Resistance in the Breast Cancer Microenvironment

Area of Science:

• Oncology
• Cell Biology
• Cancer Research

Background:

• Therapy resistance is a major challenge in breast cancer management, leading to treatment failure.
• Bidirectional communication between breast cancer cells and the tumor microenvironment contributes significantly to resistance.
• Extracellular vesicles (EVs) are increasingly recognized as key mediators of this intercellular communication.

Purpose of the Study:

• To review the current literature on the role of extracellular vesicles in promoting breast cancer therapy resistance.
• To explore how EVs facilitate communication within the tumor microenvironment.
• To highlight the potential of EVs as biomarkers and therapeutic targets.

Main Methods:

• Comprehensive literature search of studies investigating extracellular vesicles and breast cancer therapy resistance.
• Analysis of research detailing EV cargo (proteins, lipids, nucleic acids) and their impact on resistance mechanisms.
• Synthesis of findings on EV-mediated crosstalk within the tumor microenvironment.

Main Results:

• Extracellular vesicles facilitate drug resistance in breast cancer through the transfer of specific molecular cargoes.
• EVs mediate bidirectional communication, influencing both cancer cells and the tumor microenvironment to promote resistance.
• The molecular cargo of EVs can be utilized for predicting treatment response and developing novel therapeutic strategies.

Conclusions:

• Extracellular vesicles play a critical role in mediating breast cancer therapy resistance via tumor microenvironment communication.
• EVs represent promising biomarkers for predicting treatment outcomes in breast cancer patients.
• Targeting extracellular vesicle pathways presents a potential therapeutic avenue for overcoming resistance in breast cancer management.