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Related Experiment Video

Updated: Jun 7, 2026

Stimulation of Vascular Endothelial Cells Using Neutrophil Extracellular Traps in the Presence of Low-Density Lipoprotein
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Gold-labelled Low Density Lipoproteins Bind to Washed Human Platelets.

B Zhao1, R Dierichs, B Liu

  • 1Institute of Anatomy, University of Münster, Vesaliusweg 2-4, 48149, Münster.

Platelets
|November 4, 2010
PubMed
Summary

Researchers investigated low density lipoprotein (LDL) receptors on human platelets. Findings indicate specific LDL binding sites on platelets, suggesting a novel interaction mechanism distinct from the classical apolipoprotein B/E receptor.

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Preparation of Washed Human Platelets for Quantitative Metabolic Flux Studies
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Preparation of Washed Human Platelets for Quantitative Metabolic Flux Studies

Published on: January 10, 2025

Area of Science:

  • Hematology
  • Lipid Metabolism
  • Cell Biology

Background:

  • The existence of low density lipoprotein (LDL) receptors on human platelets remains debated.
  • Understanding LDL interaction with platelets is crucial for cardiovascular research.

Purpose of the Study:

  • To investigate and characterize the presence and nature of LDL binding sites on human platelets.
  • To determine if LDL receptors are present on platelets and their potential identity.

Main Methods:

  • Washed human platelets were incubated with gold-labelled LDL.
  • Transmission electron microscopy was used on ultrathin sections and surface replicas to visualize binding.
  • Competitive binding experiments were performed using unlabeled LDL and anti-glycoprotein IIb-IIIa antibodies.

Main Results:

  • Gold-labelled LDL was observed bound to the platelet membrane, within the open canalicular system, and in coated vesicles.
  • The predominant labeling pattern showed randomly distributed single gold particles and small clusters on the platelet surface.
  • Binding was specific for LDL and inhibited by anti-glycoprotein IIb-IIIa, suggesting involvement of this protein complex rather than the classical apolipoprotein B/E receptor.

Conclusions:

  • Human platelets possess specific binding sites for LDL.
  • These binding sites are likely associated with the glycoprotein IIb-IIIa complex, not the classical apolipoprotein B/E receptor.
  • This finding contributes to understanding LDL interactions with blood cells.