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Related Concept Videos

Overview of Exosomes01:36

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.
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The human body harbors a vast and diverse viral community known as the human virome. The virome includes bacteriophages that infect bacteria, and eukaryotic viruses that infect human cells. Transient dietary and environmental viruses also contribute to this dynamic ecosystem. Estimates suggest the human body may contain on the order of 10¹³ viral particles, though abundance varies widely by body site and detection method.Comprehensive characterization of the virome has become possible only with...
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Related Experiment Video

Updated: Jun 1, 2026

Using Nanoplasmon-Enhanced Scattering and Low-Magnification Microscope Imaging to Quantify Tumor-Derived Exosomes
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Published on: May 24, 2019

The human exosome and disease.

Raymond H J Staals1, Ger J M Pruijn

  • 1Department of Biomolecular Chemistry, Nijmegen Center for Molecular Life Sciences, Institute for Molecules and Materials, Radboud University Nijmegen, Nijmegen, The Netherlands.

Advances in Experimental Medicine and Biology
|May 31, 2011
PubMed
Summary

Autoantibodies targeting the exosome complex, known as PM/Scl autoantigen, are linked to autoimmune diseases like polymyositis-scleroderma. Exosome components are also implicated in chronic myelogenous leukemia, connecting them to cancer.

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Area of Science:

  • Molecular Biology
  • Immunology
  • Oncology

Background:

  • The exosome complex, crucial for RNA processing, was initially identified through autoantibodies in autoimmune patients.
  • The PM/Scl autoantigen designation arises from its frequent targeting by autoantibodies in polymyositis-scleroderma overlap patients.

Purpose of the Study:

  • To provide a historical overview of the PM/Scl autoantigen's identification.
  • To review the prevalence of anti-exosome autoantibodies in autoimmune diseases.
  • To present recent findings linking exosome components to cancer.

Main Methods:

  • Historical literature review.
  • Analysis of autoantibody prevalence data in autoimmune disease cohorts.
  • Review of recent molecular studies on exosome components and cancer.

Main Results:

  • Autoantibodies against exosome components are a hallmark of certain autoimmune diseases, particularly polymyositis-scleroderma.
  • A core exosome component has been identified as a protein associated with chronic myelogenous leukemia.

Conclusions:

  • The exosome complex plays a significant role in autoimmune pathology, serving as a key autoantigen.
  • Emerging evidence suggests a connection between exosome function and the development of certain cancers.