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Updated: Feb 27, 2026

A Proximal Culture Method to Study Paracrine Signaling Between Cells
Published on: August 28, 2018
[Exosomal microRNAs as a part of the cell-cell communication in cancer]
Agnieszka Wesołowska1, Katarzyna Piwocka1
1Laboratory of Cytometry, Nencki Institute of Experimental Biology PAS, 3 Pasteur St., 02-093 Warsaw, Poland.
Abstract:
Exosomes are small membrane vesicles released by several types of cells into the extracellular matrix. They contain both, proteins and nucleic acids, including DNA fragments, mRNAs, microRNAs, and other non-coding RNAs, that can be transported to the recipient cells. They are one of the key elements of intercellular communication that occurs in the tumor microenvironment. Recently studies have shown that exosomal microRNAs are involved in the regulation of cell migration and invasiveness, angiogenesis, metastasis, and the modulation of immune response against cancer. Moreover, exosomal microRNAs could be also potential cancer biomarkers. This review summarizes the current knowledge about biogenesis of exosomal microRNAs and their role in the tumorigenesis.
Insights
Exosomes, tiny vesicles carrying microRNAs, are crucial for cancer cell communication and progression. These exosomal microRNAs show potential as cancer biomarkers and influence tumor growth and spread.
Area of Science:
- Extracellular vesicles research
- Cancer biology
- Molecular oncology
Background:
- Exosomes are extracellular vesicles involved in intercellular communication.
- They carry diverse biomolecules, including microRNAs (miRNAs).
- Exosomes play a significant role in the tumor microenvironment.
Purpose of the Study:
- To review the biogenesis of exosomal microRNAs.
- To summarize the role of exosomal microRNAs in tumorigenesis.
- To highlight the potential of exosomal microRNAs as cancer biomarkers.
Main Methods:
- Literature review of current research on exosomal microRNAs.
- Analysis of studies investigating exosomal miRNA biogenesis.
- Synthesis of findings on exosomal miRNA functions in cancer.
Main Results:
- Exosomal miRNAs regulate key cancer processes like angiogenesis, metastasis, and immune evasion.
- Dysregulated exosomal miRNA profiles are linked to various cancers.
- Exosomal miRNAs are actively transported between cells, influencing recipient cell behavior.
Conclusions:
- Exosomal microRNAs are critical mediators of intercellular communication in cancer.
- Their involvement in tumorigenesis highlights their significance in cancer development.
- Exosomal microRNAs represent promising biomarkers for cancer detection and prognosis.
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