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Related Experiment Videos

Expression of p60fyn in human platelets.

I D Horak1, M L Corcoran, P A Thompson

  • 1Laboratory of Tumor Virus Biology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892.

Oncogene
|April 1, 1990
PubMed
Summary
This summary is machine-generated.

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Platelets express two src family tyrosine kinases, pp60c-src and p60fyn. Thrombin activation increases phosphotyrosine proteins but does not alter kinase levels, leaving their role in platelet signaling unresolved.

Area of Science:

  • Biochemistry
  • Cell Biology
  • Hematology

Background:

  • Platelets exhibit significant tyrosine protein kinase activity, partly due to pp60c-src expression.
  • Src family kinases are crucial regulators in various cellular processes.

Purpose of the Study:

  • To investigate the expression of src family tyrosine kinases in human platelets.
  • To determine the role of pp60c-src and p60fyn in thrombin-activated platelet signaling.

Main Methods:

  • Western blot analysis to detect and quantify pp60c-src and p60fyn in platelets and fibroblasts.
  • Thrombin stimulation of human platelets followed by analysis of phosphotyrosine protein levels and kinase activity.

Main Results:

  • Both pp60c-src and p60fyn are expressed in human platelets.

Related Experiment Videos

  • p60fyn is significantly more abundant in platelets than in fibroblasts and less abundant than pp60c-src.
  • Thrombin activation increased phosphotyrosine proteins but did not alter pp60c-src or p60fyn abundance or activity.

    • Conclusions:

    • Human platelets express at least two src family tyrosine kinases: pp60c-src and p60fyn.
    • The study did not resolve the specific role of these kinases in platelet signal transduction pathways following thrombin stimulation.