Deletion of the FHL2 gene attenuates intima‐media thickening in a partially ligated carotid artery ligated mouse model

The four and a half LIM domain protein 2 (FHL2) is a member of the four and a half LIM domain (FHL) gene family, and it is associated with cholesterol‐enriched diet‐promoted atherosclerosis. However, the effect of FHL2 protein on vascular remodelling in response to hemodynamic alterations remains un...

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Veröffentlicht in:Journal of cellular and molecular medicine 2020-01, Vol.24 (1), p.160-173
Hauptverfasser: Chen, Chi‐Yu, Tsai, Hsiao‐Ya, Tsai, Shih‐Hung, Chu, Pao‐Hsien, Huang, Po‐Hsun, Chen, Jaw‐Wen, Lin, Shing‐Jong
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container_title Journal of cellular and molecular medicine
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creator Chen, Chi‐Yu
Tsai, Hsiao‐Ya
Tsai, Shih‐Hung
Chu, Pao‐Hsien
Huang, Po‐Hsun
Chen, Jaw‐Wen
Lin, Shing‐Jong
description The four and a half LIM domain protein 2 (FHL2) is a member of the four and a half LIM domain (FHL) gene family, and it is associated with cholesterol‐enriched diet‐promoted atherosclerosis. However, the effect of FHL2 protein on vascular remodelling in response to hemodynamic alterations remains unclear. Here, we investigated the role of FHL2 in a model of restricted blood flow‐induced atherosclerosis. To promote neointimal hyperplasia in vivo, we subjected FHL2+/+ and FHL2−/− mice to partial ligation of the left carotid artery (LCA). The expression of p‐ERK and p‐AKT was decreased in FHL2−/− mice. FHL2 bound to AKT regulated AKT phosphorylation and led to Rac1‐GTP inactivation. FHL2 silencing in human aortic smooth muscle cells down‐regulated the PDGF‐induced phosphorylation of ERK and AKT. Furthermore, FHL2 silencing reduced cytoskeleton conformational changes and caused cell cycle arrest. We concluded that FHL2 is essential for the regulation of arterial smooth muscle cell function. FHL2 modulates proliferation and migration via mitogen‐activated protein kinase (MAPK) and PI3K‐AKT signalling, leading to arterial wall thickening and thus neointimal hyperplasia.
doi_str_mv 10.1111/jcmm.14687
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FHL2 modulates proliferation and migration via mitogen‐activated protein kinase (MAPK) and PI3K‐AKT signalling, leading to arterial wall thickening and thus neointimal hyperplasia.</description><identifier>ISSN: 1582-1838</identifier><identifier>EISSN: 1582-4934</identifier><identifier>DOI: 10.1111/jcmm.14687</identifier><identifier>PMID: 31714683</identifier><language>eng</language><publisher>England: John Wiley &amp; Sons, Inc</publisher><subject>1-Phosphatidylinositol 3-kinase ; AKT protein ; Angioplasty ; Animals ; Aorta ; Arteriosclerosis ; Atherosclerosis ; Atherosclerosis - etiology ; Atherosclerosis - metabolism ; Atherosclerosis - pathology ; Atherosclerosis - prevention &amp; control ; Biotechnology ; Blood flow ; Carotid arteries ; Carotid Arteries - pathology ; Carotid Arteries - surgery ; Carotid artery ; carotid artery ligation ; Carotid Intima-Media Thickness ; Cell adhesion &amp; migration ; Cell cycle ; Cell growth ; Cell Movement ; Cell Proliferation ; Cells, Cultured ; Cholesterol ; Clonal deletion ; Cytoskeleton ; Extracellular signal-regulated kinase ; FHL2 ; FHL2 protein ; Gene Deletion ; Guanosine triphosphate ; Hemodynamics ; Hyperplasia ; Inactivation ; Kinases ; Laboratory animals ; LIM-Homeodomain Proteins - physiology ; MAP kinase ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Muscle Proteins - physiology ; Muscle, Smooth, Vascular - metabolism ; Muscle, Smooth, Vascular - pathology ; Muscles ; neointimal hyperplasia ; Original ; Phosphorylation ; Platelet-derived growth factor ; Protein kinase ; Proteins ; Rac1 protein ; Signal Transduction ; Smooth muscle ; smooth muscle cell ; Software ; Stains &amp; staining ; Transcription Factors - physiology ; Veins &amp; arteries</subject><ispartof>Journal of cellular and molecular medicine, 2020-01, Vol.24 (1), p.160-173</ispartof><rights>2019 The Authors. published by John Wiley &amp; Sons Ltd and Foundation for Cellular and Molecular Medicine.</rights><rights>2019 The Authors. 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subjects 1-Phosphatidylinositol 3-kinase
AKT protein
Angioplasty
Animals
Aorta
Arteriosclerosis
Atherosclerosis
Atherosclerosis - etiology
Atherosclerosis - metabolism
Atherosclerosis - pathology
Atherosclerosis - prevention & control
Biotechnology
Blood flow
Carotid arteries
Carotid Arteries - pathology
Carotid Arteries - surgery
Carotid artery
carotid artery ligation
Carotid Intima-Media Thickness
Cell adhesion & migration
Cell cycle
Cell growth
Cell Movement
Cell Proliferation
Cells, Cultured
Cholesterol
Clonal deletion
Cytoskeleton
Extracellular signal-regulated kinase
FHL2
FHL2 protein
Gene Deletion
Guanosine triphosphate
Hemodynamics
Hyperplasia
Inactivation
Kinases
Laboratory animals
LIM-Homeodomain Proteins - physiology
MAP kinase
Mice
Mice, Inbred C57BL
Mice, Knockout
Muscle Proteins - physiology
Muscle, Smooth, Vascular - metabolism
Muscle, Smooth, Vascular - pathology
Muscles
neointimal hyperplasia
Original
Phosphorylation
Platelet-derived growth factor
Protein kinase
Proteins
Rac1 protein
Signal Transduction
Smooth muscle
smooth muscle cell
Software
Stains & staining
Transcription Factors - physiology
Veins & arteries
title Deletion of the FHL2 gene attenuates intima‐media thickening in a partially ligated carotid artery ligated mouse model
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