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Related Experiment Video

Updated: Jun 2, 2026

Analyzing Platelet Subpopulations by Multi-color Flow Cytometry
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Published on: June 10, 2025

IL-17A increases ADP-induced platelet aggregation.

Francesco Maione1, Carla Cicala, Elisabetta Liverani

  • 1William Harvey Research Institute, Queen Mary University of London, Barts and The London School of Medicine and Dentistry, Charterhouse Square, London, UK.

Biochemical and Biophysical Research Communications
|May 3, 2011
PubMed
Summary
This summary is machine-generated.

Interleukin-17A (IL-17A) promotes platelet aggregation and activation, increasing cardiovascular risks in autoimmune diseases. Targeting IL-17A may reduce these pathology risks.

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Area of Science:

  • Immunology
  • Cardiovascular Biology
  • Hematology

Background:

  • Autoimmune diseases are linked to increased thromboembolism and cardiovascular morbidity.
  • Interleukin-17A (IL-17A) is a pro-inflammatory cytokine implicated in autoimmune disease pathogenesis.
  • The direct impact of IL-17A on platelet function and cardiovascular risk remains largely unexplored.

Purpose of the Study:

  • To investigate the hypothesis that IL-17A directly influences platelet aggregation and activation.
  • To determine if IL-17A contributes to the cardiovascular complications observed in autoimmune conditions.

Main Methods:

  • Human and murine platelets were incubated with IL-17A.
  • Platelet aggregation was measured using light transmission aggregometry.
  • Platelet activation markers (CD62P, fibrinogen binding), IL-17 receptor (IL-17RA) expression, and Erk-2 phosphorylation were analyzed via FACS and Western blot.

Main Results:

  • IL-17A pre-incubation enhanced ADP-induced platelet aggregation and accelerated CD62P expression and fibrinogen binding.
  • These effects correlated with faster ADP-induced Erk-2 phosphorylation.
  • The pro-aggregant effects of IL-17A were abolished in platelets lacking the IL-17 receptor.

Conclusions:

  • IL-17A directly promotes platelet activation and aggregation, potentially contributing to cardiovascular pathology in autoimmune diseases.
  • These findings highlight a novel pro-thrombotic role for IL-17A.
  • Targeting IL-17A may offer a therapeutic strategy to mitigate cardiovascular risks associated with autoimmune disorders.