scholarly journals Inhibition of neddylation by MLN4924 improves neointimal hyperplasia and promotes apoptosis of vascular smooth muscle cells through p53 and p62

2017 ◽  
Vol 25 (2) ◽  
pp. 319-329 ◽  
Author(s):  
Tang-Jun Ai ◽  
Jian-Yong Sun ◽  
Lin-Juan Du ◽  
Chaoji Shi ◽  
Chao Li ◽  
...  
Keyword(s):  
Smooth Muscle ◽  
Vascular Smooth Muscle ◽  
Smooth Muscle Cells ◽  
Vascular Smooth Muscle Cells ◽  
Neointimal Hyperplasia ◽  
Muscle Cells

Micro-RNA Regulation of Vascular Smooth Muscle Cells and Its Significance in Cardiovascular Diseases

2021 ◽  
Author(s):  
Duong Ngoc Diem Nguyen ◽  
William M Chilian ◽  
Shamsul Mohd Zain ◽  
Muhammad Fauzi Daud ◽  
Yuh Fen Pung
Keyword(s):  
Smooth Muscle ◽  
Vascular Smooth Muscle ◽  
Smooth Muscle Cells ◽  
Vascular Smooth Muscle Cells ◽  
Intracellular Signaling ◽  
Neointimal Hyperplasia ◽  
Muscle Cells ◽  
Micro Rna ◽  
Phenotypic Switching ◽  
Micro Rnas

Cardiovascular disease (CVD) is among the leading causes of death worldwide. Micro-RNAs (miRNAs), regulatory molecules that repress protein expression, have attracted considerable attention in CVD research. The vasculature plays a big role in CVD development and progression and dysregulation of vascular cells underlies the root of many vascular diseases. This review provides a brief introduction of the biogenesis of miRNAs and exosomes, followed by overview of the regulatory mechanisms of miRNAs in vascular smooth muscle cells (VSMCs) intracellular signaling during phenotypic switching, senescence, calcification and neointimal hyperplasia. Evidence of extracellular signaling of VSMCs and other cells via exosomal and circulating miRNAs was also presented. Lastly, current drawbacks and limitations of miRNA studies in CVD research and potential ways to overcome these disadvantages were discussed in detail. In-depth understanding of VSMC regulation via miRNAs will add substantial knowledge and advance research in diagnosis, disease progression and/or miRNA-derived therapeutic approaches in CVD research.

Femoral artery neointimal hyperplasia is reduced after wire injury in Ref-1+/− mice

2007 ◽  
Vol 292 (1) ◽  
pp. H516-H521 ◽  
Author(s):  
David L. Basi ◽  
Neeta Adhikari ◽  
Ami Mariash ◽  
Qinglu Li ◽  
Esther Kao ◽  
...  
Keyword(s):  
Smooth Muscle ◽  
Vascular Smooth Muscle ◽  
Smooth Muscle Cells ◽  
Vascular Smooth Muscle Cells ◽  
Femoral Artery ◽  
Cellular Response ◽  
Fas Ligand ◽  
Neointimal Hyperplasia ◽  
Muscle Cells ◽  
Wild Type

Redox factor-1 (Ref-1) is a multifunctional protein that regulates redox, DNA repair, and the response to cell stress. We previously demonstrated that Ref-1+/− mice exhibit a significantly reduced Ref-1 mRNA and protein levels within the vasculature, which are associated with increased oxidative stress. The goal of this study was to test the hypothesis that partial loss of Ref-1 altered the cellular response to vascular injury. Fourteen days after femoral artery wire injury, we found that vessel intima-to-media ratio was significantly reduced in Ref-1+/− mice compared with that in wild-type mice ( P < 0.01). Bromodeoxyuridine labeling and transferase-mediated dUTP nick-end labeling staining at 14 days did not differ in the Ref-1+/− mice. In vitro studies found no significant changes in either serum-induced proliferation or baseline apoptosis in Ref-1+/− vascular smooth muscle cells. Exposure to Fas ligand; however, did result in increased susceptibility of Ref-1+/− vascular smooth muscle cells to apoptosis ( P < 0.001). Ref-1+/− mice exhibited an increase in circulating baseline levels of IL-10, IL-1α, and VEGF compared with those in wild-type mice but a marked impairment in these pathways in response to injury. In sum, loss of a single allele of Ref-1 is sufficient to reduce intimal lesion formation and to alter circulating cytokine and growth factor expression.

scholarly journals Jujuboside B Inhibits Neointimal Hyperplasia and Prevents Vascular Smooth Muscle Cell Dedifferentiation, Proliferation, and Migration via Activation of AMPK/PPAR-γ Signaling

2021 ◽  
Vol 12 ◽  
Author(s):  
Zaixiong Ji ◽  
Jiaqi Li ◽  
Jianbo Wang
Keyword(s):  
Smooth Muscle ◽  
Vascular Smooth Muscle ◽  
Smooth Muscle Cells ◽  
Vascular Smooth Muscle Cells ◽  
Neointimal Hyperplasia ◽  
Muscle Cells ◽  
Cell Dedifferentiation ◽  
Ppar Γ ◽  
And Migration ◽  
Proliferation And Migration

The uncontrolled proliferation and migration of vascular smooth muscle cells is a critical step in the pathological process of restenosis caused by vascular intimal hyperplasia. Jujuboside B (JB) is one of the main biologically active ingredients extracted from the seeds of Zizyphus jujuba (SZJ), which has the properties of anti-platelet aggregation and reducing vascular tension. However, its effects on restenosis after vascular intervention caused by VSMCs proliferation and migration remain still unknown. Herein, we present novel data showing that JB treatment could significantly reduce the neointimal hyperplasia of balloon-damaged blood vessels in Sprague-Dawley (SD) rats. In cultured VSMCs, JB pretreatment significantly reduced cell dedifferentiation, proliferation, and migration induced by platelet-derived growth factor-BB (PDGF-BB). JB attenuated autophagy and reactive oxygen species (ROS) production stimulated by PDGF-BB. Besides, JB promoted the phosphorylation of adenosine monophosphate-activated protein kinase (AMPK) and the expression of peroxisome proliferator-activated receptor-γ (PPAR-γ). Notably, inhibition of AMPK and PPAR-γ partially reversed the ability of JB to resist the proliferation and migration of VSMCs. Taken as a whole, our findings reveal for the first time the anti-restenosis properties of JB in vivo and in vitro after the endovascular intervention. JB antagonizes PDGF-BB-induced phenotypic switch, proliferation, and migration of vascular smooth muscle cells partly through AMPK/PPAR-γ pathway. These results indicate that JB might be a promising clinical candidate drug against in-stent restenosis, which provides a reference for further research on the prevention and treatment of vascular-related diseases.

scholarly journals MT1-matrix metalloproteinase directs arterial wall invasion and neointima formation by vascular smooth muscle cells

2005 ◽  
Vol 202 (5) ◽  
pp. 663-671 ◽  
Author(s):  
Sergey Filippov ◽  
Gerald C. Koenig ◽  
Tae-Hwa Chun ◽  
Kevin B. Hotary ◽  
Ichiro Ota ◽  
...  
Keyword(s):  
Extracellular Matrix ◽  
Smooth Muscle ◽  
Matrix Metalloproteinase ◽  
Vascular Smooth Muscle ◽  
Smooth Muscle Cells ◽  
Vascular Smooth Muscle Cells ◽  
Arterial Wall ◽  
Neointimal Hyperplasia ◽  
Muscle Cells

During pathologic vessel remodeling, vascular smooth muscle cells (VSMCs) embedded within the collagen-rich matrix of the artery wall mobilize uncharacterized proteolytic systems to infiltrate the subendothelial space and generate neointimal lesions. Although the VSMC-derived serine proteinases, plasminogen activator and plasminogen, the cysteine proteinases, cathepsins L, S, and K, and the matrix metalloproteinases MMP-2 and MMP-9 have each been linked to pathologic matrix-remodeling states in vitro and in vivo, the role that these or other proteinases play in allowing VSMCs to negotiate the three-dimensional (3-D) cross-linked extracellular matrix of the arterial wall remains undefined. Herein, we demonstrate that VSMCs proteolytically remodel and invade collagenous barriers independently of plasmin, cathepsins L, S, or K, MMP-2, or MMP-9. Instead, we identify the membrane-anchored matrix metalloproteinase, MT1-MMP, as the key pericellular collagenolysin that controls the ability of VSMCs to degrade and infiltrate 3-D barriers of interstitial collagen, including the arterial wall. Furthermore, genetic deletion of the proteinase affords mice with a protected status against neointimal hyperplasia and lumen narrowing in vivo. These studies suggest that therapeutic interventions designed to target MT1-MMP could prove beneficial in a range of human vascular disease states associated with the destructive remodeling of the vessel wall extracellular matrix.

scholarly journals Mangiferin Inhibits PDGF-BB-Induced Proliferation and Migration of Rat Vascular Smooth Muscle Cells and Alleviates Neointimal Formation in Mice through the AMPK/Drp1 Axis

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Qi Wu ◽  
Yuanyang Chen ◽  
Zhiwei Wang ◽  
Xin Cai ◽  
Yanjia Che ◽  
...  
Keyword(s):  
Smooth Muscle ◽  
Vascular Smooth Muscle ◽  
Smooth Muscle Cells ◽  
Vascular Smooth Muscle Cells ◽  
Neointimal Hyperplasia ◽  
Muscle Cells ◽  
Neointimal Formation ◽  
Artery Ligation ◽  
And Migration ◽  
Proliferation And Migration

Mangiferin is a naturally occurring xanthone C-glycoside that is widely found in various plants. Previous studies have reported that mangiferin inhibits tumor cell proliferation and migration. Excessive proliferation and migration of vascular smooth muscle cells (SMCs) is associated with neointimal hyperplasia in coronary arteries. However, the role and mechanism of mangiferin action in neointimal hyperplasia is still unknown. In this study, a mouse carotid artery ligation model was established, and primary rat smooth muscle cells were isolated and used for mechanistic assays. We found that mangiferin alleviated neointimal hyperplasia, inhibited proliferation and migration of SMCs, and promoted platelets derive growth factors-BB- (PDGF-BB-) induced contractile phenotype in SMCs. Moreover, mangiferin attenuated neointimal formation by inhibiting mitochondrial fission through the AMPK/Drp1 signaling pathway. These findings suggest that mangiferin has the potential to maintain vascular homeostasis and inhibit neointimal hyperplasia.

Abstract 22: Histone Deacetylase (HDAC) 4 Controls Neointimal Hyperplasia via Stimulating Proliferation and Migration of Vascular Smooth Muscle Cells

Hypertension ◽  
2013 ◽  
Vol 62 (suppl_1) ◽  
Author(s):  
Tatsuya Usui ◽  
Muneyoshi Okada ◽  
Hideyuki Yamawaki
Keyword(s):  
Smooth Muscle ◽  
Vascular Smooth Muscle ◽  
Smooth Muscle Cells ◽  
Vascular Smooth Muscle Cells ◽  
Neointimal Hyperplasia ◽  
Muscle Cells ◽  
Cell Counting ◽  
And Migration ◽  
Proliferation And Migration

Histone deacetylases (HDACs) are transcriptional co-regulators. We have recently demonstrated that a class IIa HDAC, HDAC4 promotes reactive oxygen species (ROS)-dependent vascular smooth muscle inflammation and mediates the development of hypertension in spontaneously hypertensive rats. Pathogenesis of hypertension is in part modulated by vascular structural remodeling via proliferation and migration of vascular smooth muscle cells (SMCs). We thus examined whether HDAC4 controls SMCs proliferation and migration. In rat mesenteric arterial SMCs, small interfering RNA (siRNA) against HDAC4 inhibited platelet-derived growth factor (PDGF)-BB-induced SMCs proliferation as determined by a cell counting (51% inhibition, n=7) or bromodeoxyuridine incorporation assay (95% inhibition, n=6) and migration as determined by Boyden chamber assay (71% inhibition, n=3). Expression and activity of HDAC4 were increased by PDGF-BB (30% increase, n=5 and 170% increase, n=4, respectively). HDAC4 siRNA inhibited phosphorylation of p38 (69% inhibition, n=5) and heat shock protein (HSP) 27 (91% inhibition, n=5) and expression of cyclin D1 (58% inhibition, n=5) as measured by Western blotting. HDAC4 siRNA also inhibited PDGF-BB-induce ROS production as measured fluorometrically using 2’ 7’-dichlorofluorescein diacetate (77% inhibition, n=4) and nicotinamide adenine dinucleotide phosphate oxidase activity as measured by lucigenin assay (61% inhibition, n=4). A Ca 2+ /calmodulin (CaM)-dependent protein kinase (CaMK) II inhibitor, KN93 inhibited PDGF-BB-induced SMCs proliferation (58% inhibition, n=4) and migration (75% inhibition, n=3) as well as phosphorylation of HDAC4 (84% inhibition, n=4). In vivo, a class IIa HDACs inhibitor, MC1568 prevented neointimal hyperplasia in mice carotid ligation model (54% inhibition, n=6). MC1568 also inhibited increased activity of HDAC4 in the neointimal lesions. The present results for the first time demonstrate that HDAC4 controls PDGF-BB-induced SMCs proliferation and migration through activation of p38/HSP27 signals via ROS generation in a CaMKII-dependent manner, which may lead to the neointima hyperplasia in vivo.

Radiation suppresses neointimal hyperplasia through affecting proliferation and apoptosis of vascular smooth muscle cells

2018 ◽  
Vol 19 (2) ◽  
pp. 153-161 ◽  
Author(s):  
Liqin Yuan ◽  
Chang Shu ◽  
Xiao Zhou ◽  
Jiehua Li ◽  
Lunchang Wang ◽  
...  
Keyword(s):  
Smooth Muscle ◽  
Vascular Smooth Muscle ◽  
Smooth Muscle Cells ◽  
Vascular Smooth Muscle Cells ◽  
Neointimal Hyperplasia ◽  
Muscle Cells ◽  
S Phase ◽  
Nuclear Antigen ◽  
X Ray ◽  
Vsmc Proliferation

Purpose: To study the effect of x-ray radiotherapy on vascular smooth muscle cells (VSMCs) and elucidate the mechanisms in preventing neointimal hyperplasia of prosthetic vascular grafts. Materials and methods: In model I, twelve mongrel dogs underwent revascularization with prosthetic grafts and half the dogs underwent irradiation of the grafts at 28 Gy. In model II, human VSMCs (hVSMCs) were maintained and divided into six groups to which external radiation was applied at six different doses: 0 Gy, 2 Gy, 8 Gy, 16 Gy, 24 Gy and 30 Gy. In both models, specimens were harvested and examined by using morphological, immunological, cellular and molecular methods. Results: After irradiation, the neointima thickness was significantly lower in irradiated groups (p≤0.01). The radiotherapy could up-regulate p27kip1, and down-regulate proliferating cell nuclear antigen (PCNA) and S phase kinase associated protein 2 (Skp2). X-ray irradiation inhibits the proliferation of hVSMCs via acting on G1/S phase of cell cycle. The apoptosis of hVSMCs increased significantly with dose and time. The expression of PCNA and Skp2 were decreased after a first increasing trend with dose, but had a significant negative correlation with time. The expression of p27kip1 had a significant positive correlation with dose and time. Conclusions: Postoperative external fractionated irradiation after prosthetic vessel replacement of the abdominal aorta suppressed the development of hyperplasia in the graft neointima in the short term. There was a prominent time- and dose-dependent inhibition of VSMC proliferation by radiation when it was administered.

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