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Related Concept Videos

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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.
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Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their...
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Concise Review: MSC-Derived Exosomes for Cell-Free Therapy.

Donald G Phinney1, Mark F Pittenger2

  • 1Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, Florida, USA.

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|March 16, 2017
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Summary
This summary is machine-generated.

Mesenchymal stem cell (MSC)-derived exosomes show promise for cell-free regenerative medicine. Their therapeutic potential depends on production quality, as exosome content varies with MSC origin and environment, especially in tumors.

Keywords:
Cellular therapyExosomesMesenchymal stem cellsMesenchymal stromal cellsMicrovesicles

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Area of Science:

  • Cellular Therapy
  • Regenerative Medicine
  • Extracellular Vesicles

Background:

  • Mesenchymal stem cells (MSCs) are widely studied for cellular therapy in clinical trials.
  • MSC-derived extracellular vesicles (EVs), including exosomes and microvesicles (MVs), are emerging as key mediators in MSC-based therapies.
  • EVs facilitate cell-to-cell communication and influence tissue responses to injury, infection, and disease.

Purpose of the Study:

  • To examine the role of MSC-derived exosomes in cellular therapy.
  • To understand the factors influencing the therapeutic potential of MSC exosomes for cell-free regenerative medicine.
  • To highlight the importance of production quality and exosome content variability.

Main Methods:

  • Review of existing literature on MSC transplantation and MSC-derived EVs.
  • Analysis of the composition of MSC-derived exosomes, including cytokines, growth factors, mRNAs, and miRNAs.
  • Investigation of how MSC origin, culture conditions, and the tumor microenvironment affect exosome content.

Main Results:

  • MSC-derived exosomes contain bioactive molecules that can mediate therapeutic effects.
  • The content of MSC exosomes is dynamic and influenced by the MSC's biological context.
  • Culturing MSCs with tumor cells or within the tumor microenvironment alters exosome composition.

Conclusions:

  • MSC-derived exosomes offer a potential avenue for cell-free regenerative medicine.
  • The quality, reproducibility, and potency of exosome production are critical for therapeutic success.
  • Careful control over exosome production, considering the MSC's origin and environment, may lead to safer and more effective cell-free therapies.