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Related Experiment Video

Updated: Jun 14, 2025

Extraction of Extracellular Vesicles from Whole Tissue
09:03

Extraction of Extracellular Vesicles from Whole Tissue

Published on: February 7, 2019

15.0K

Extraction of redox extracellular vesicles using exclusion-based sample preparation.

Mohammad Dehghan Banadaki1, Nicole G Rummel2,3, Spencer Backus1

  • 1Department of Mechanical Engineering, University of Kentucky, Lexington, KY, 40506, USA.

Analytical and Bioanalytical Chemistry
|September 7, 2024
PubMed
Summary
This summary is machine-generated.

Researchers isolated "Redox EVs," extracellular vesicles carrying oxidized proteins, using exclusion-based sample preparation. These Redox EVs promote glioblastoma growth and harm normal cells, unlike other EVs.

Keywords:
4-Hydroxynonenal (HNE)EV isolationEV purificationExtracellular vesiclesImmunoaffinityRedox EVs

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Area of Science:

  • Extracellular vesicle (EV) research
  • Cancer biology
  • Oxidative stress mechanisms

Background:

  • Cancer cells produce reactive oxygen species (ROS), leading to lipid peroxidation and 4-hydroxynonenal (HNE)-adducted proteins.
  • Cells release extracellular vesicles (EVs) containing HNE-adducted proteins, termed Redox EVs, as a clearance mechanism.

Purpose of the Study:

  • To isolate and characterize Redox EVs from glioblastoma cell lines.
  • To investigate the biological effects of Redox EVs on glioblastoma and normal cells.

Main Methods:

  • Utilized exclusion-based sample preparation (ESP) for isolating Redox EVs.
  • Characterized Redox EVs using electron microscopy and zeta potential analysis.
  • Assessed the impact of Redox EVs on glioblastoma (LN18, RR-LN18) and normal astrocyte (NHA) cell viability and growth.

Main Results:

  • ESP successfully isolated intact Redox EVs containing HNE adducts.
  • Redox EVs were smaller and had a more negative zeta potential than Remaining EVs.
  • Redox EVs promoted glioblastoma cell growth and injured normal astrocytes, potentially via H2O2 production.

Conclusions:

  • Redox EVs play a distinct role in glioblastoma progression.
  • ESP enables the isolation of specific EV subpopulations for mechanistic studies.
  • Targeting Redox EVs may offer novel therapeutic strategies for glioblastoma.