Abstract
Platelets are small, anucleate cells that play oversized roles in hemostasis, immunity, and inflammation. An important mediator of platelet function is integrin αIIbβ3, which is required for fibrinogen-dependent platelet aggregation during hemostasis. This platelet response is dependent on conformational changes in the integrin induced by “inside-out” biochemical signals that are triggered by platelet agonists. In turn, fibrinogen binding to αIIbβ3 initiates “outside-in” biochemical and mechanical signals that regulate the platelet cytoskeleton and help to promote full platelet aggregation and secretory responses. Without a nucleus, there is a limited range of experimental manipulations that are possible with human platelets to study the molecular basis of integrin signaling in these primary cells. Consequently, many studies of αIIbβ3 function use genetic approaches that rely on heterologous expression systems or platelets from gene-targeted mice, sometimes with uncertain applicability to human platelets. This chapter will detail a method for genetic manipulation of megakaryocytes and platelets derived from human induced pluripotent stem cells for molecular studies of αIIbβ3 signaling and for modeling of human platelet functions potentially relevant to hemostasis, immunity, and inflammation.
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Kasirer-Friede, A., Shattil, S.J. (2021). Genetic Instruction of Megakaryocytes and Platelets Derived from Human Induced Pluripotent Stem Cells for Studies of Integrin Regulation. In: Vicente-Manzanares, M. (eds) The Integrin Interactome. Methods in Molecular Biology, vol 2217. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-0962-0_13
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DOI: https://doi.org/10.1007/978-1-0716-0962-0_13
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