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Extracellular vesicles in onco-nephrology.

Chiara Gai1, Margherita A C Pomatto1, Cristina Grange1

  • 1Stem Cell Laboratory, Department of Medical Sciences, University of Turin, Turin, Italy.

Experimental & Molecular Medicine
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Extracellular vesicles (EVs) from renal cancer stem cells promote tumor growth, metastasis, and immune evasion. These EVs enhance angiogenesis and create premetastatic niches, highlighting their role in aggressive renal cell carcinoma.

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Area of Science:

  • Oncology
  • Cell Biology
  • Cancer Research

Background:

  • Extracellular vesicles (EVs) mediate intercellular communication by transferring molecules.
  • Renal cell carcinoma (RCC) EVs play a role in cancer progression.
  • Cancer stem cells (CSCs) are implicated in tumor aggressiveness.

Purpose of the Study:

  • To review the role of EVs from RCC and RCC CSCs in tumor progression.
  • To understand the mechanisms by which these EVs affect the tumor microenvironment.
  • To investigate the impact of EVs on angiogenesis, metastasis, and immune escape.

Main Methods:

  • Review of existing literature on EVs in renal cell carcinoma.
  • Analysis of studies focusing on EVs derived from CD105-positive RCC CSCs.
  • Examination of in vitro and in vivo experimental findings.

Main Results:

  • EVs from RCC show mild biological activity.
  • EVs from RCC CSCs significantly enhance tumor angiogenesis and metastasis.
  • EVs promote premetastatic niche formation in the lungs.
  • EVs modify mesenchymal stromal cells to support tumor growth and remodeling.
  • EVs inhibit dendritic cell differentiation and T cell activation, promoting immune escape.

Conclusions:

  • EVs from RCC CSCs are key drivers of tumor aggressiveness.
  • These EVs promote angiogenesis and metastasis through RNA cargo transfer.
  • EVs contribute to immune evasion by modulating immune cells.
  • Targeting tumor-derived EVs may offer therapeutic strategies for RCC.