Contractility defects hinder glycoprotein VI-mediated platelet activation and affect platelet functions beyond clot contraction.

ABSTRACT:

Background

Active and passive biomechanical properties of platelets contribute substantially to thrombus formation. Actomyosin contractility drives clot contraction required for stabilizing the hemostatic plug. Impaired contractility results in bleeding but is difficult to detect using platelet function tests.

Objectives

To determine how diminished myosin activity affects platelet functions, including and beyond clot contraction.

Methods

Using the myosin IIA-specific pharmacologic inhibitor blebbistatin, we modulated myosin activity in platelets from healthy donors and systematically characterized platelet responses at various levels of inhibition by interrogating distinct platelet functions at each stage of thrombus formation using a range of complementary assays.

SUBMITTER: Kenny M 

PROVIDER: S-EPMC10877441 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature