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Fang J, Sun X, Liu S, Yang P, Lin J, Feng J, Cruz MA, Dong JF, Fang Y, Wu J. Shear Stress Accumulation Enhances von Willebrand Factor-Induced Platelet P-Selectin Translocation in a PI3K/Akt Pathway-Dependent Manner. Front Cell Dev Biol 2021; 9:642108. [PMID: 34141704 PMCID: PMC8204100 DOI: 10.3389/fcell.2021.642108] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 04/21/2021] [Indexed: 01/03/2023] Open
Abstract
Platelet adhesion and activation through the interaction of von Willebrand factor (VWF) with platelet glycoprotein (GP) Ibα are the early key events in hemostasis and thrombosis especially under high blood shear stress. P-selectin translocation from α granule to the cell surface is a typical platelet function phenotype, which makes the platelet-induced inflammatory response of flowing leukocytes possible and can be induced by either chemical agonists (thrombin, ADP, etc.) or high blood shear stress, but regulations of VWF mutation and blood shear stress on VWF-induced P-selectin translocation remain unclear. With flow cytometry, parallel plate flow chamber, and immunofluorescence staining techniques, we examined the P-selectin translocation of platelets on immobilized wild-type (WT) VWF-A1 domain and its two mutants, the gain-of-function (GOF) mutant R1308L and the loss-of-function (LOF) mutant G1324S, respectively. The results showed that the VWF-A1-induced platelet P-selectin translocation was triggered, accelerated, and enhanced by fluid shear stress and could be correlated with shear stress accumulation (SSA, the product of fluid shear stress and mechanical stimulus time), and the PI3K/Akt axis was involved in the platelet P-selectin translocation. The force-triggered P-selectin translocation occurred quickly on partial platelet surface first and then extended gradually to the whole platelet surface as SSA increased. The P-selectin translocation process would be promoted by the GOF mutation (R1308L) but slowed down by the LOF mutation (G1324S). These findings demonstrated a force-enhanced regulation mechanism for the VWF-induced platelet P-selectin translocation through the PI3K/Akt pathway and provided a novel insight into the mechano-chemical regulation mechanism for the key events, such as platelet activation and functional phenotype change in hemostasis and thrombosis.
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Affiliation(s)
- Jinhua Fang
- Institute of Biomechanics/School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
| | - Xiaoxi Sun
- Institute of Biomechanics/School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
| | - Silu Liu
- Institute of Biomechanics/School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
| | - Pu Yang
- Institute of Biomechanics/School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
| | - Jiangguo Lin
- Institute of Biomechanics/School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China.,Research Department of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jingjing Feng
- Institute of Biomechanics/School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
| | - Miguel A Cruz
- Cardiovascular Research Section, Department of Medicine, Baylor College of Medicine/Center for Translational Research on Inflammatory Diseases (CTRID), Michael E. DeBakey Veterans Affairs Medical Center, Houston, TX, United States
| | - Jing-Fei Dong
- Bloodworks Research Institute and Hematology Division, Department of Medicine, University of Washington, Seattle, WA, United States
| | - Ying Fang
- Institute of Biomechanics/School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
| | - Jianhua Wu
- Institute of Biomechanics/School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
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