Large extracellular vesicles: Size matters in tumor progression

Area of Science:

• Cell Biology
• Cancer Biology
• Biochemistry

Background:

• Extracellular Vesicles (EVs) are cell-released particles with growing importance in cancer research.
• EVs are involved in intercellular communication and cargo transfer.
• Large EVs (L-EVs) originate from the plasma membrane, distinct from exosomes.

Purpose of the Study:

• To review the biogenesis and release of L-EVs, focusing on Large Oncosomes (LOs).
• To examine the cargo and functional roles of LOs in cancer development and progression.
• To discuss the potential of LOs as cancer biomarkers.

Main Methods:

• Review of literature on L-EV and LO biogenesis.
• Analysis of LO cargo (proteins, nucleic acids).
• Discussion of L-EV internalization mechanisms.

Main Results:

• L-EV biogenesis is influenced by plasma membrane rigidity and cellular signaling.
• Large Oncosomes (LOs) are exclusively shed by cancer cells (1-10 μm).
• LOs carry diverse cargos (proteins, mRNA, miRNA, DNA) impacting cancer progression.

Conclusions:

• LOs represent a promising avenue for cancer diagnostics and prognostics.
• Understanding LO biogenesis and function is crucial for biomarker development.
• Challenges in LO utilization as biomarkers require further investigation.