Related Experiment Video
Updated: Jun 16, 2026

07:55
Harnessing the Power of MicroRNA Cargoes in Small Extracellular Vesicles Released from Fresh-Frozen Human Brain Sections
Published on: November 8, 2024
Fostering "Education": Do Extracellular Vesicles Exploit Their Own Delivery Code?
Mayra Paolillo1, Sergio Comincini2, Sergio Schinelli1
1Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy.
Cells
|August 7, 2021
Summary
Extracellular vesicles (EVs) mediate cell communication. This review highlights EV surface molecules and targeting mechanisms crucial for their diagnostic and therapeutic potential.
Area of Science:
- Cell Biology
- Biochemistry
- Molecular Biology
Background:
- Extracellular vesicles (EVs), including microvesicles (MVs) and exosomes (EXs), are vital for intercellular communication in health and disease.
- Current research primarily focuses on EV cargo, neglecting the role of surface molecules in EV targeting.
Purpose of the Study:
- To review the "delivery code" of EVs, focusing on surface membrane molecules mediating cell-specific targeting.
- To explore the diagnostic, prognostic, and therapeutic potential unlocked by understanding EV targeting mechanisms.
Main Methods:
- Discussion of published studies on EV surface molecules and their interactions.
- Review of experimental techniques and bioinformatic tools for characterizing EV surface molecules.
- Presentation of innovative methods for future research in EV-cell targeting.
Main Results:
- EV targeting is influenced by specific combinations of "sender" and "recipient" molecules on EV surfaces.
- Understanding these surface molecules is key to deciphering EV-mediated intercellular communication.
Conclusions:
- Characterizing EV surface membrane molecules is essential for advancing EV-based diagnostics and therapeutics.
- Future research should focus on innovative techniques to deepen the understanding of EV-cell targeting mechanisms.
Related Concept Videos
Receptor-mediated Endocytosis
Overview
Exocytosis
Exocytosis is used to release material from cells. Like other bulk transport mechanisms, exocytosis requires energy.
Exocytosis
Exocytosis is a process that releases molecules outside the cell. Like other bulk transport mechanisms, exocytosis requires energy.
Exocytosis is the opposite of endocytosis, which brings molecules inside the cell. Sometimes, the released materials are signaling molecules. For example, neurons typically use exocytosis to release neurotransmitters. Cells also use exocytosis to insert proteins such as ion channels into their cell membranes, secrete proteins for use in the extracellular matrix, or...
Exocytosis is the opposite of endocytosis, which brings molecules inside the cell. Sometimes, the released materials are signaling molecules. For example, neurons typically use exocytosis to release neurotransmitters. Cells also use exocytosis to insert proteins such as ion channels into their cell membranes, secrete proteins for use in the extracellular matrix, or...
Overview of Exosomes
Exosomes are stable, lipid bilayer-enclosed vesicles capable of crossing biological barriers. They can carry a wide range of molecules required for intercellular communication. Once exosomes are released from the cell where they originated, they enter a recipient cell through various pathways such as fusion, receptor-mediated endocytosis, macropinocytosis, and phagocytosis.
Stahl et al. discovered exosomes in 1983, but the exosomes were initially considered waste products released from the...
Stahl et al. discovered exosomes in 1983, but the exosomes were initially considered waste products released from the...
Receptor-mediated Endocytosis
Receptor-mediated endocytosis is when bulk amounts of specific molecules are imported into a cell after binding to cell surface receptors. The molecules bound to these receptors are taken into the cell through inward folding of the cell surface membrane, which is eventually pinched off into a vesicle within the cell. Structural proteins, such as clathrin, coat the budding vesicle.
Clathrin-Mediated Endocytosis of LDL
One well-characterized example of receptor-mediated endocytosis is the...
Clathrin-Mediated Endocytosis of LDL
One well-characterized example of receptor-mediated endocytosis is the...
Vesicular Trasport: Endocytosis, Transcytosis and Exocytosis
Vesicular transport is a cellular process that encompasses the engulfment of particles or dissolved substances by cells. It involves endocytosis, transcytosis, and exocytosis.
Endocytosis is a cellular mechanism that involves the inward folding of the cell membrane to create vesicles that capture and transport large drug molecules. This process comprises two distinct methods: pinocytosis (often referred to as "cell drinking") and phagocytosis (often referred to as "cell eating"). Pinocytosis is...
Endocytosis is a cellular mechanism that involves the inward folding of the cell membrane to create vesicles that capture and transport large drug molecules. This process comprises two distinct methods: pinocytosis (often referred to as "cell drinking") and phagocytosis (often referred to as "cell eating"). Pinocytosis is...

