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Related Concept Videos

Overview of Exosomes01:36

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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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Exocytosis is a process that releases molecules outside the cell. Like other bulk transport mechanisms, exocytosis requires energy.
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Vesicular Trasport: Endocytosis, Transcytosis and Exocytosis01:18

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In multicellular organisms, many molecules transmit signals between cells to pass information. These signals vary in complexity and include small peptides, nucleotides, steroids, fatty acid derivatives, and dissolved gases such as nitric oxide. Some signaling molecules diffuse through the plasma membrane to act locally between neighboring cells or travel long distances. Others remain attached to the cell surface, transmitting information to other cells only when they make contact. In some...
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Extraction of Extracellular Vesicles from Whole Tissue
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Exosomal communication goes viral.

David G Meckes1

  • 1Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, Florida, USA david.meckes@med.fsu.edu.

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Viruses, including Epstein-Barr virus (EBV), hijack cellular exosomes for spread and immune evasion. These modified exosomes can promote cancer development and progression, altering intercellular communication.

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Area of Science:

  • * Cell biology
  • * Virology
  • * Cancer research

Background:

  • * Exosomes are key mediators of intercellular communication, involved in physiological and pathological processes.
  • * Viruses exploit host exosome pathways for propagation, immune evasion, and potentially oncogenesis.
  • * Epstein-Barr virus (EBV) is a tumor virus with known interactions with host cell pathways.

Purpose of the Study:

  • * To review the role of virally modified exosomes in disease.
  • * To discuss how tumor viruses, specifically EBV, alter exosome biology.
  • * To explore the link between EBV-modified exosomes and cancer development.

Main Methods:

  • * Literature review and synthesis of current research findings.
  • * Analysis of studies on viral hijacking of exosome pathways.
  • * Focus on Epstein-Barr virus (EBV) and its exosome modifications.

Main Results:

  • * Virally modified exosomes facilitate virus spread and immune evasion.
  • * Alterations in exosome pathways by tumor viruses are implicated in cancer.
  • * EBV-modified exosomes represent a significant area of study in viral oncogenesis.

Conclusions:

  • * Understanding virally modified exosomes is crucial for comprehending virus-host interactions.
  • * Exosome dysregulation by viruses like EBV contributes to cancer pathogenesis.
  • * Further research into EBV-exosome interactions may reveal novel therapeutic targets.