Key result
Inhibition of Src kinase caused a weak (~10%) reversal in GPVI-mediated platelet aggregation, whereas inhibition of Syk or Btk did not.
Why the study?
Src tyrosine kinases and Syk contribute to sustained platelet aggregation under arterial shear, but whether they are required for aggregation under minimal shear following GPVI or CLEC-2 activation was unknown.
Population
Platelet suspensions activated by CRP or rhodocytin
Comparison
Inhibition of Src vs Syk vs Btk
Design
In vitro experimental study
Follow-up
Up to 50 min
Authors
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Src inhibition modestly reverses aggregation in this model; hypothesis-generating for pathway-specific antithrombotics, requiring human validation.
Src kinase, but not Syk or Btk, plays a role in sustaining GPVI-mediated platelet aggregation under minimal shear conditions.
Cheung et al. (2022) studied Platelet aggregation. Src, Syk, and Btk inhibitors was evaluated on Reversal of platelet aggregation measured by light transmission aggregometry. Inhibition of Src kinase caused a weak (~10%) reversal in GPVI-mediated platelet aggregation, whereas inhibition of Syk or Btk did not.