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Updated: Jan 27, 2026

Profiling of Estrogen-regulated MicroRNAs in Breast Cancer Cells
Published on: February 21, 2014
MicroRNA Shuttle from Cell-To-Cell by Exosomes and Its Impact in Cancer
Heidi Schwarzenbach1, Peter B Gahan2
1Department of Tumor Biology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany. hschwarz@uke.uni-hamburg.de.
Abstract:
The identification of exosomes, their link to multivesicular bodies and their potential role as a messenger vehicle between cancer and healthy cells opens up a new approach to the study of intercellular signaling. Furthermore, the fact that their main cargo is likely to be microRNAs (miRNAs) provides the possibility of the transfer of such molecules to control activities in the recipient cells. This review concerns a brief overview of the biogenesis of both exosomes and miRNAs together with the movement of such structures between cells. The possible roles of miRNAs in the development and progression of breast, ovarian and prostate cancers are discussed.
Insights
Exosomes, tiny vesicles carrying microRNAs (miRNAs), act as intercellular messengers. This review explores their biogenesis, intercellular movement, and roles in breast, ovarian, and prostate cancer progression.
Area of Science:
- Cell biology
- Molecular biology
- Cancer research
Background:
- Exosomes are identified as key intercellular communication vehicles.
- Exosomes are linked to multivesicular bodies.
- Exosomes contain microRNAs (miRNAs) that can influence recipient cells.
Purpose of the Study:
- To review exosome and miRNA biogenesis and intercellular transport.
- To discuss the role of miRNAs in cancer development and progression.
Main Methods:
- Literature review of exosome and miRNA biology.
- Analysis of miRNA involvement in specific cancer types.
Main Results:
- Exosomes facilitate intercellular signaling through miRNA transfer.
- miRNAs play significant roles in the development and progression of breast, ovarian, and prostate cancers.
Conclusions:
- Exosomes represent a novel avenue for studying intercellular signaling in cancer.
- Targeting exosome-mediated miRNA transfer could offer therapeutic strategies for cancer.
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