1. Key Laboratory for Biorheological Science and Technology of Ministry of Education, State Key Laboratory of Mechanical Transmission, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University,Chongqing,PR China,400044
2. Laboratory of Genetic Regulators in the Immune System, Henan Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University,Henan,Xinxiang,PR China,45003
3. Department of Vascular Surgery, First Affiliated Hospital, Army Medical University (Third Military University),Chongqing,PR China,400038
4. Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hengyang Medical College, University of South China,Hunan,Hengyang,PR China,421001
5. Division of Infectious Diseases, Chongqing Public Health Medical Center,Chongqing,PR China,400030
GTPase-activating SH3 domain-binding protein 2 (G3BP2) is a mediator that responds to environmental stresses through stress granule formation and is involved in the progression of chronic diseases. However
no studies have examined the contribution of G3BP2 in the oscillatory shear stress (OSS)-induced endothelial dysfunction. Here we assessed the effects of G3BP2 in endothelial cells (ECs) function and investigated the underlying mechanism. Using shear stress apparatus and partial ligation model
we identified that stress granule-related genes in ECs could be induced by OSS with RNA-seq
and then confirmed that G3BP2 was highly and specifically expressed in athero-susceptible endothelia in the OSS regions.
G3bp2
–/–
Apoe
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mice had significantly decreased atherosclerotic lesions associated with deficiency of G3BP2 in protecting endothelial barrier function
decreasing monocyte adhesion to ECs and inhibiting the proinflammatory cytokine levels. Furthermore
loss of G3BP2 diminished OSS-induced inflammation in ECs by increasing YAP nucleocytoplasmic shuttling and phosphorylation. These data demonstrate that G3BP2 is a critical OSS regulated gene in regulating ECs function and that G3BP2 inhibition in ECs is a promising atheroprotective therapeutic strategy.
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相关作者
Junyang Huang
Kun Zhang
Ruolin Du
Wanling Liu
Haijun Zhang
Tian Tian
Yazhou Wang
Tieying Yin
相关机构
Department of Vascular & Intervention, Tenth Peoples' Hospital of Tongji University
Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University
School of Medicine, Chongqing University
College of Basic Medical Sciences, Chongqing Medical University
Department of Neurosurgery, Daping Hospital, Army Medical Center of PLA, Army Medical University