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Related Concept Videos

Overview of Exosomes01:36

Overview of Exosomes

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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.
Stahl et al. discovered exosomes in 1983, but the exosomes were initially considered waste products released from the...
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Proteomics01:33

Proteomics

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A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
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Related Experiment Video

Updated: Feb 27, 2026

Protein Digestion, Ultrafiltration, and Size Exclusion Chromatography to Optimize the Isolation of Exosomes from Human Blood Plasma and Serum
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Protein Digestion, Ultrafiltration, and Size Exclusion Chromatography to Optimize the Isolation of Exosomes from Human Blood Plasma and Serum

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Proteomics Analysis of Circulating Serum Exosomes.

Antonius Koller1, Purvi Patel1, Jenny Kim Kim1

  • 1Herbert Irving Comprehensive Cancer Center, Proteomics Shared Resource, Columbia University Medical Center, New York, NY, 10032, USA.

Methods in Molecular Biology (Clifton, N.J.)
|July 5, 2017
PubMed
Summary

Researchers characterized proteins in extracellular vesicles (EVs) from cells. This mass spectrometry approach aids in discovering novel biomarkers for diseases and tissue injury from biofluids like urine and plasma.

Keywords:
Circulating exosomeMass spectrometryProteomics analysis of biofluidsSerum biomarkers

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Purification and microRNA Profiling of Exosomes Derived from Blood and Culture Media

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Biomarker Discovery

Background:

  • Proteomics analysis of biofluids (urine, plasma) is crucial for identifying disease biomarkers.
  • Existing methods face challenges in comprehensive profiling of disease indicators.
  • Cell-derived vesicles offer a promising source for biomarker discovery.

Purpose of the Study:

  • To comprehensively characterize the protein cargo of cell-derived extracellular vesicles (EVs).
  • To evaluate EVs as a source for biomarker discovery using mass spectrometry.
  • To advance the identification of predictive, prognostic, and mechanistic biomarkers.

Main Methods:

  • Utilized mass spectrometry-based proteomics.
  • Isolated and analyzed protein content from extracellular vesicles (exosomes).
  • Focused on comprehensive characterization of vesicle protein cargos.

Main Results:

  • Detailed proteomic profiles of extracellular vesicles were obtained.
  • Identified a range of proteins within the EVs.
  • Demonstrated the feasibility of using EV proteomics for biomarker discovery.

Conclusions:

  • Extracellular vesicles are a rich source of potential biomarkers.
  • Mass spectrometry-based proteomics of EVs enables comprehensive analysis.
  • This approach holds promise for discovering biomarkers for diseases and tissue injury.