Integrin alpha llb beta 3-Dependent ERK Signaling Is Regulated by Src and Rho Kinases in Both Leu33 and Pro33 Polymorphic Isoforms

 http://repository.vnu.edu.vn/handle/VNU_123/29794
Platelet integrin alpha llb beta 3 possesses a Leu/Pro polymorphism at residue 33 (Leu33/HPA-la or Pro33/HPA-1b).
The Pro33 isoform has been suggested to exhibit prothrombotic features. alpha llb beta 3-expressing CHO (Chinese hamster ovary) celk. on immobilized fibrinogen show activation of the MAP kinase family member ERK2, with an enhanced ERK2 activity in Pro33 cells compared to Leu33 cells.
In our present work, we examined how the Leu/Pro polymorphism modulates the ERK2 activation stimulated by 2 differently triggered outside -in signalings. We either treated the CHO cells with Mn2+ or allowed them to adhere to fibrinogen.
Moreover, we studied which signaling cascades are involved in ERK2 activation. In contrast to immobilized fibrinogen, Mn2+ did not significantly increase ERK2 activation.
However, Mn2+ had a synergistic effect on ERK2 phosphorylation when combined with immobilized fibrinogen.
Pro33 cells adherent to fibrinogen exhibited a significantly greater ERK2 activity than Leu33 cells in the presence of Mn2+, which peaked after 10 min of adhesion.
Our data showed that Src family and rho kinases play a crucial role in the integrin alpha llb beta 3-dependent outside in signaling to ERK2. (C) 2016 S. Karger AG, Basel

Title: Integrin alpha llb beta 3-Dependent ERK Signaling Is Regulated by Src and Rho Kinases in Both Leu33 and Pro33 Polymorphic Isoforms
Authors: Huynh, Khon C.
Nguyen Thi Hiep
Pham Dinh Chuong
Keywords: alpha llb beta 3
ERK signaling
Leu33
Pro33
Polymorphisms
Rho kinase
Src signaling
Issue Date: 2017
Publisher: KARGER, ALLSCHWILERSTRASSE 10, CH-4009 BASEL, SWITZERLAND
Citation: ISIKNOWLEDGE
Abstract: Platelet integrin alpha llb beta 3 possesses a Leu/Pro polymorphism at residue 33 (Leu33/HPA-la or Pro33/HPA-1b). The Pro33 isoform has been suggested to exhibit prothrombotic features. alpha llb beta 3-expressing CHO (Chinese hamster ovary) celk. on immobilized fibrinogen show activation of the MAP kinase family member ERK2, with an enhanced ERK2 activity in Pro33 cells compared to Leu33 cells. In our present work, we examined how the Leu/Pro polymorphism modulates the ERK2 activation stimulated by 2 differently triggered outside -in signalings. We either treated the CHO cells with Mn2+ or allowed them to adhere to fibrinogen. Moreover, we studied which signaling cascades are involved in ERK2 activation. In contrast to immobilized fibrinogen, Mn2+ did not significantly increase ERK2 activation. However, Mn2+ had a synergistic effect on ERK2 phosphorylation when combined with immobilized fibrinogen. Pro33 cells adherent to fibrinogen exhibited a significantly greater ERK2 activity than Leu33 cells in the presence of Mn2+, which peaked after 10 min of adhesion. Our data showed that Src family and rho kinases play a crucial role in the integrin alpha llb beta 3-dependent outside in signaling to ERK2. (C) 2016 S. Karger AG, Basel
Description: TNS07076 ; ACTA HAEMATOLOGICA Volume: 137 Issue: 1 Pages: 44-50 Published: 2017
URI: http://repository.vnu.edu.vn/handle/VNU_123/29794
ISSN: 0001-5792
1421-9662
Appears in Collections:Bài báo của ĐHQGHN trong Web of Science

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