TY - JOUR
T1 - Association of Membrane/Lipid Rafts with the Platelet Cytoskeleton and the Caveolin PY14
T2 - Participation in the Adhesion Process
AU - Cerecedo, Doris
AU - Martínez-Vieyra, Ivette
AU - Maldonado-García, Deneb
AU - Hernández-González, Enrique
AU - Winder, Steve J.
N1 - Publisher Copyright:
© 2015 Wiley Periodicals, Inc.
PY - 2015/11/1
Y1 - 2015/11/1
N2 - Platelets are the most prominent elements of blood tissue involved in hemostasis at sites of blood vessel injury. Platelet cytoskeleton is responsible for their shape modifications observed during activation and adhesion to the substratum; therefore the interactions between cytoskeleton and plasma membrane are critical to modulate blood platelet functions. Several cytoskeletal components and binding partners, as well as enzymes that regulate the cytoskeleton, localize to membrane/lipid rafts (MLR) and regulate lateral diffusion of membrane proteins and lipids. Resting, thrombin-activated, and adherent human platelets were processed for biochemical studies including western-blot and immunprecipitation assays and confocal analysis were performed to characterize the interaction of MLR with the main cytoskeleton elements and β-dystroglycan as well as with the association of caveolin-1 PY14 with focal adhesion proteins. We transfected a megakaryoblast cell line (Meg-01) to deplete β-dystroglycan, subsequent to their differentiation to the platelet progenitors. Our data showed a direct interaction of the MLR with cytoskeleton to regulate platelet shape, while an association of caveolin-1 PY14 with vinculin is needed to establish focal adhesions, which are modulated for β-dystroglycan. In conclusion, caveolin-1 PY14 in association with platelet cytoskeleton participate in focal adhesions dynamics. J. Cell. Biochem. 116: 2528-2540, 2015.
AB - Platelets are the most prominent elements of blood tissue involved in hemostasis at sites of blood vessel injury. Platelet cytoskeleton is responsible for their shape modifications observed during activation and adhesion to the substratum; therefore the interactions between cytoskeleton and plasma membrane are critical to modulate blood platelet functions. Several cytoskeletal components and binding partners, as well as enzymes that regulate the cytoskeleton, localize to membrane/lipid rafts (MLR) and regulate lateral diffusion of membrane proteins and lipids. Resting, thrombin-activated, and adherent human platelets were processed for biochemical studies including western-blot and immunprecipitation assays and confocal analysis were performed to characterize the interaction of MLR with the main cytoskeleton elements and β-dystroglycan as well as with the association of caveolin-1 PY14 with focal adhesion proteins. We transfected a megakaryoblast cell line (Meg-01) to deplete β-dystroglycan, subsequent to their differentiation to the platelet progenitors. Our data showed a direct interaction of the MLR with cytoskeleton to regulate platelet shape, while an association of caveolin-1 PY14 with vinculin is needed to establish focal adhesions, which are modulated for β-dystroglycan. In conclusion, caveolin-1 PY14 in association with platelet cytoskeleton participate in focal adhesions dynamics. J. Cell. Biochem. 116: 2528-2540, 2015.
KW - ADHERED PLATELETS
KW - CAVEOLIN-1
KW - DYSTROGLYCAN
KW - Meg-01 CELLS
UR - http://www.scopus.com/inward/record.url?scp=84941135633&partnerID=8YFLogxK
U2 - 10.1002/jcb.25197
DO - 10.1002/jcb.25197
M3 - Artículo
SN - 0730-2312
VL - 116
SP - 2528
EP - 2540
JO - Journal of Cellular Biochemistry
JF - Journal of Cellular Biochemistry
IS - 11
ER -