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Shen J, Ju D, Wu S, Zhao J, Pham L, Ponce A, Yang M, Li HJ, Zhang K, Yang Z, Xie Y, Li L. SM22α deficiency: promoting vascular fibrosis via SRF-SMAD3-mediated activation of Col1a2 transcription following arterial injury. RESEARCH SQUARE 2024:rs.3.rs-3941602. [PMID: 38464061 PMCID: PMC10925461 DOI: 10.21203/rs.3.rs-3941602/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Vascular fibrosis, characterized by increased Type I collagen expression, significantly contributes to vascular remodeling. Our previous studies show that disrupting the expression of SM22α (aka SM22, Tagln) induces extensive vascular remodeling following arterial injury, involving oxidative stress, inflammation, and chondrogenesis within the vessel wall. This study aims to investigate the molecular mechanisms underlying the transcription of Col1a2 , a key fibrotic extracellular matrix marker. We observed upregulation of COL1A2 in the arterial wall of Sm22 -/- mice following carotid injury. Bioinformatics and molecular analyses reveal that Col1a2 transcription depends on a CArG box in the promoter, activated synergistically by SRF and SMAD3. Notably, we detected enhanced nuclear translocation of both SRF and SMAD3 in the smooth muscle cells of the injured carotid artery in Sm22 -/- mice. These findings demonstrate that SM22 deficiency regulates vascular fibrosis through the interaction of SRF and the SMAD3-mediated canonical TGF-β1 signal pathway, suggesting SM22α as a potential therapeutic target for preventing vascular fibrosis.
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Xu X, Liu XQ, Liu XL, Wang X, Zhang WD, Huang XF, Jia FY, Kong P, Han M. SM22α Deletion Contributes to Neurocognitive Impairment in Mice through Modulating Vascular Smooth Muscle Cell Phenotypes. Int J Mol Sci 2023; 24:ijms24087117. [PMID: 37108281 PMCID: PMC10138350 DOI: 10.3390/ijms24087117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/04/2023] [Accepted: 04/05/2023] [Indexed: 04/29/2023] Open
Abstract
Considerable evidence now indicates that cognitive impairment is primarily a vascular disorder. The depletion of smooth muscle 22 alpha (SM22α) contributes to vascular smooth muscle cells (VSMCs) switching from contractile to synthetic and proinflammatory phenotypes in the context of inflammation. However, the role of VSMCs in the pathogenesis of cognitive impairment remains undetermined. Herein, we showed a possible link between VSMC phenotypic switching and neurodegenerative diseases via the integration of multi-omics data. SM22α knockout (Sm22α-/-) mice exhibited obvious cognitive impairment and cerebral pathological changes, which were visibly ameliorated by the administration of AAV-SM22α. Finally, we confirmed that SM22α disruption promotes the expression of SRY-related HMG-box gene 10 (Sox10) in VSMCs, thereby aggravating the systemic vascular inflammatory response and ultimately leading to cognitive impairment in the brain. Therefore, this study supports the idea of VSMCs and SM22α as promising therapeutic targets in cognitive impairment to improve memory and cognitive decline.
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Affiliation(s)
- Xin Xu
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang 050017, China
- Key Laboratory of Neural and Vascular Biology of Ministry of Education, Shijiazhuang 050017, China
- Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang 050017, China
| | - Xiao-Qin Liu
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang 050017, China
- Key Laboratory of Neural and Vascular Biology of Ministry of Education, Shijiazhuang 050017, China
- Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang 050017, China
| | - Xin-Long Liu
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang 050017, China
- Key Laboratory of Neural and Vascular Biology of Ministry of Education, Shijiazhuang 050017, China
- Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang 050017, China
| | - Xu Wang
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang 050017, China
- Key Laboratory of Neural and Vascular Biology of Ministry of Education, Shijiazhuang 050017, China
- Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang 050017, China
| | - Wen-Di Zhang
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang 050017, China
- Key Laboratory of Neural and Vascular Biology of Ministry of Education, Shijiazhuang 050017, China
- Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang 050017, China
| | - Xiao-Fu Huang
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang 050017, China
- Key Laboratory of Neural and Vascular Biology of Ministry of Education, Shijiazhuang 050017, China
- Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang 050017, China
| | - Fang-Yue Jia
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang 050017, China
- Key Laboratory of Neural and Vascular Biology of Ministry of Education, Shijiazhuang 050017, China
- Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang 050017, China
| | - Peng Kong
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang 050017, China
- Key Laboratory of Neural and Vascular Biology of Ministry of Education, Shijiazhuang 050017, China
- Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang 050017, China
| | - Mei Han
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang 050017, China
- Key Laboratory of Neural and Vascular Biology of Ministry of Education, Shijiazhuang 050017, China
- Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang 050017, China
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Khrunin AV, Khvorykh GV, Arapova AS, Kulinskaya AE, Koltsova EA, Petrova EA, Kimelfeld EI, Limborska SA. The Study of the Association of Polymorphisms in LSP1, GPNMB, PDPN, TAGLN, TSPO, and TUBB6 Genes with the Risk and Outcome of Ischemic Stroke in the Russian Population. Int J Mol Sci 2023; 24:ijms24076831. [PMID: 37047799 PMCID: PMC10095190 DOI: 10.3390/ijms24076831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/31/2023] [Accepted: 04/03/2023] [Indexed: 04/09/2023] Open
Abstract
To date, there has been great progress in understanding the genetic basis of ischemic stroke (IS); however, several aspects of the condition remain underexplored, including the influence of genetic factors on post-stroke outcomes and the identification of causative loci. We proposed that an analysis of the results obtained from animal models of brain ischemia could be helpful. To this end, we developed a bioinformatic approach for exploring single-nucleotide polymorphisms (SNPs) in human orthologs of rat genes expressed differentially after induced brain ischemia. Using this approach, we identified and analyzed 11 SNPs from 6 genes in 553 Russian individuals (331 patients with IS and 222 controls). We assessed the association of SNPs with the risk of IS and IS outcomes. We found that the SNPs rs858239 (GPNMB), rs907611 (LSP1), and rs494356 (TAGLN) were associated with different parameters of IS functional outcomes. In addition, the SNP rs1261025 (PDPN) was associated significantly with IS itself (p = 0.0188, recessive model). All these associations were demonstrated for the first time. Analysis of the literature suggests that they should be characterized as being inflammation related. This supports the pivotal role of inflammation in both the incidence of stroke and post-stroke outcomes. We believe the findings reported here will help with stroke prognosis in the future.
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Affiliation(s)
- Andrey V. Khrunin
- National Research Centre “Kurchatov Institute”, Kurchatov Sq. 2, Moscow 123182, Russia
| | - Gennady V. Khvorykh
- National Research Centre “Kurchatov Institute”, Kurchatov Sq. 2, Moscow 123182, Russia
| | - Anna S. Arapova
- National Research Centre “Kurchatov Institute”, Kurchatov Sq. 2, Moscow 123182, Russia
- Faculty of Biotechnology and Industrial Ecology, Mendeleev University of Chemical Technology of Russia, Miusskaya Sq. 9, Moscow 125047, Russia
| | - Anna E. Kulinskaya
- National Research Centre “Kurchatov Institute”, Kurchatov Sq. 2, Moscow 123182, Russia
- Faculty of Biotechnology and Industrial Ecology, Mendeleev University of Chemical Technology of Russia, Miusskaya Sq. 9, Moscow 125047, Russia
| | - Evgeniya A. Koltsova
- Department of Neurology, Neurosurgery and Medical Genetics of Pirogov Russian National Research Medical University, Moscow 117997, Russia
| | - Elizaveta A. Petrova
- Department of Neurology, Neurosurgery and Medical Genetics of Pirogov Russian National Research Medical University, Moscow 117997, Russia
| | - Ekaterina I. Kimelfeld
- Department of Neurology, Neurosurgery and Medical Genetics of Pirogov Russian National Research Medical University, Moscow 117997, Russia
| | - Svetlana A. Limborska
- National Research Centre “Kurchatov Institute”, Kurchatov Sq. 2, Moscow 123182, Russia
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Protein Alterations in Cardiac Ischemia/Reperfusion Revealed by Spatial-Omics. Int J Mol Sci 2022; 23:ijms232213847. [PMID: 36430335 PMCID: PMC9692276 DOI: 10.3390/ijms232213847] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/01/2022] [Accepted: 11/08/2022] [Indexed: 11/12/2022] Open
Abstract
Myocardial infarction is the most common cause of death worldwide. An understanding of the alterations in protein pathways is needed in order to develop strategies that minimize myocardial damage. To identify the protein signature of cardiac ischemia/reperfusion (I/R) injury in rats, we combined, for the first time, protein matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) and label-free proteomics on the same tissue section placed on a conductive slide. Wistar rats were subjected to I/R surgery and sacrificed after 24 h. Protein MALDI-MSI data revealed ischemia specific regions, and distinct profiles for the infarct core and border. Firstly, the infarct core, compared to histologically unaffected tissue, showed a significant downregulation of cardiac biomarkers, while an upregulation was seen for coagulation and immune response proteins. Interestingly, within the infarct tissue, alterations in the cytoskeleton reorganization and inflammation were found. This work demonstrates that a single tissue section can be used for protein-based spatial-omics, combining MALDI-MSI and label-free proteomics. Our workflow offers a new methodology to investigate the mechanisms of cardiac I/R injury at the protein level for new strategies to minimize damage after MI.
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Wu J, Wang W, Huang Y, Wu H, Wang J, Han M. Deletion of SM22α disrupts the structure and function of caveolae and T-tubules in cardiomyocytes, contributing to heart failure. PLoS One 2022; 17:e0271578. [PMID: 35849583 PMCID: PMC9292107 DOI: 10.1371/journal.pone.0271578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 07/04/2022] [Indexed: 11/28/2022] Open
Abstract
Aims Smooth muscle 22-alpha (SM22α) is an actin-binding protein that plays critical roles in mediating polymerization of actin filaments and stretch sensitivity of cytoskeleton in vascular smooth muscle cells (VSMCs). Multiple lines of evidence indicate the existence of SM22α in cardiomyocytes. Here, we investigated the effect of cardiac SM22α on the membrane architecture and functions of cardiomyocytes to pressure overload. Methods SM22α knock-out (KO) mice were utilized to assess the role of SM22α in the heart. Echocardiography was used to evaluate cardiac function, transverse aortic constriction (TAC) was used to induce heart failure, cell shortening properties were measured by IonOptix devices in intact cardiomyocytes, Ca2+ sensitivity of myofilaments was measured in permeabilized cardiomyocytes. Confocal microscopy, electron microscopy, western blotting, co-immunoprecipitation (co-IP), Real-Time Quantitative Reverse Transcription PCR (qRT-PCR) techniques were used to perform functional and structural analysis. Results SM22α ablation did not alter cardiac function at baseline, but mRNA levels of atrial natriuretic peptide (ANP), brain natriuretic peptide (BNP) and β-myosin heavy chain (β-MHC) were increased significantly compared with wild type (WT) controls. The membrane architecture was severely disrupted in SM22α KO cardiomyocytes, with disassembly and flattening of caveolae and disrupted T-tubules. Furthermore, SM22α was co-immunoprecipitated with caveolin-3 (Cav3), and the interaction between Cav3 and actin was significantly reduced in SM22α KO cells. SM22α KO cardiomyocytes displayed asynchronized SR Ca2+ release, significantly increased Ca2+ spark frequency. Additionally, the kinetics of sarcomere shortening was abnormal, accompanied with increased sensitivity and reduced maximum response of myofilaments to Ca2+ in SM22α KO cardiomyocytes. SM22α KO mice were more prone to heart failure after TAC. Conclusions Our findings identified that SM22α may be required for the architecture and function of caveolae and T-tubules in cardiomyocytes.
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Affiliation(s)
- Jun Wu
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang, China
| | - Wei Wang
- Department of Physiology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Yaomeng Huang
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang, China
| | - Haochen Wu
- Department of Physiology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Jiabin Wang
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang, China
| | - Mei Han
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang, China
- * E-mail:
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6
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Inflammation and atherosclerosis: signaling pathways and therapeutic intervention. Signal Transduct Target Ther 2022; 7:131. [PMID: 35459215 PMCID: PMC9033871 DOI: 10.1038/s41392-022-00955-7] [Citation(s) in RCA: 214] [Impact Index Per Article: 107.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 03/01/2022] [Accepted: 03/02/2022] [Indexed: 02/08/2023] Open
Abstract
Atherosclerosis is a chronic inflammatory vascular disease driven by traditional and nontraditional risk factors. Genome-wide association combined with clonal lineage tracing and clinical trials have demonstrated that innate and adaptive immune responses can promote or quell atherosclerosis. Several signaling pathways, that are associated with the inflammatory response, have been implicated within atherosclerosis such as NLRP3 inflammasome, toll-like receptors, proprotein convertase subtilisin/kexin type 9, Notch and Wnt signaling pathways, which are of importance for atherosclerosis development and regression. Targeting inflammatory pathways, especially the NLRP3 inflammasome pathway and its regulated inflammatory cytokine interleukin-1β, could represent an attractive new route for the treatment of atherosclerotic diseases. Herein, we summarize the knowledge on cellular participants and key inflammatory signaling pathways in atherosclerosis, and discuss the preclinical studies targeting these key pathways for atherosclerosis, the clinical trials that are going to target some of these processes, and the effects of quelling inflammation and atherosclerosis in the clinic.
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Zhang N, Wang YY, Hu HJ, Lu G, Xu X, Dou YQ, Cui W, Gao SJ, Han M. Assessing serum levels of SM22α as a new biomarker for patients with aortic aneurysm/dissection. PLoS One 2022; 17:e0264942. [PMID: 35358189 PMCID: PMC8970406 DOI: 10.1371/journal.pone.0264942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 02/18/2022] [Indexed: 11/24/2022] Open
Abstract
Background Aortic aneurysm/dissection (AAD) is now encountered more often because of the increasing prevalence of atherosclerosis and hypertension in the population. Despite many therapeutic improvements, in particular timely and successful surgery, in-hospital mortality rates are still higher. Timely identification of patients at high risk will help improve the overall prognosis of AAD. Since early clinical and radiological signs are nonspecific, there is an urgent need for accurate biomarkers. Smooth muscle 22α (SM22α) is a potential marker for AAD because of its abundant expression in vascular smooth muscle, which is involved in development of AAD. Methods We prepared three different mouse models, including abdominal aortic aneurysm, neointimal hyperplasia and atherosclerosis. SM22α levels were assessed in serum and vascular tissue of the mice. Next, the relationships between serum SM22α level and vascular lesion were studied in mice. Finally, serum from 41 patients with AAD, 107 carotid artery stenosis (CAS) patients and 40 healthy volunteers were tested for SM22α. Serum levels of SM22α were measured using an enzyme-linked immunosorbent assay (ELISA). Results Compared with the controls, serum SM22α levels were reduced in the models of aortic aneurysm, neointimal formation and atherosclerosis, and elevated in mice with ruptured aneurysm. Serum SM22α level was negatively correlated with apoptosis rate of vascular smooth muscle cells (VSMC), ratio of intima/ media (I/M) area and plaque size. Patients with AAD had significantly higher serum SM22α levels than patients with only CAS, or normal controls. Conclusion Serum SM22α could be a potential predictive marker for AAD, and regulation of VSMC is a possible mechanism for the effects of SM22α.
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Affiliation(s)
- Ning Zhang
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Cardiovascular Medical Science Center, Hebei Medical University, Shijiazhuang, China
- Department of Functional Region of Diagnosis, The Fourth Affiliated Hospital, Hebei Medical University, Shijiazhuang, China
| | - Ying-Ying Wang
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Cardiovascular Medical Science Center, Hebei Medical University, Shijiazhuang, China
- Department of Functional Region of Diagnosis, The Fourth Affiliated Hospital, Hebei Medical University, Shijiazhuang, China
| | - Hai-Juan Hu
- Department of Cardiovascular Medicine, The Second Affiliated Hospital, Hebei Medical University, Shijiazhuang, China
| | - Gang Lu
- Department of Clinical Laboratory, The Fourth Affiliated Hospital, Hebei Medical University, Shijiazhuang, China
| | - Xin Xu
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Cardiovascular Medical Science Center, Hebei Medical University, Shijiazhuang, China
| | - Yong-Qing Dou
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Cardiovascular Medical Science Center, Hebei Medical University, Shijiazhuang, China
- Key Laboratory of Integrative Medicine on Liver-kidney patterns of Hebei Province, College of Integrated Chinese and Western Medicine, Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Wei Cui
- Department of Cardiovascular Medicine, The Second Affiliated Hospital, Hebei Medical University, Shijiazhuang, China
| | - She-Jun Gao
- Department of Clinical Laboratory, The Fourth Affiliated Hospital, Hebei Medical University, Shijiazhuang, China
| | - Mei Han
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Cardiovascular Medical Science Center, Hebei Medical University, Shijiazhuang, China
- * E-mail:
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Lin Y, Huang H, Yu Y, Zhu F, Xiao W, Yang Z, Shao L, Shen Z. Long non-coding RNA RP11-465L10.10 promotes vascular smooth muscle cells phenotype switching and MMP9 expression via the NF-κB pathway. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1776. [PMID: 35071470 PMCID: PMC8756256 DOI: 10.21037/atm-21-6402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 12/17/2021] [Indexed: 01/02/2023]
Abstract
Background Thoracic aortic aneurysm/dissection (TAA/D) are complicated vascular disorders with rapid development and high mortality. Vascular smooth muscle cells (VSMCs) phenotype switching plays an important role in the pathological process of TAA/D. Previous studies have indicated a potential correlation between long non-coding RNA (lncRNA) RP11-465L10.10 and matrix metallopeptidase 9 (MMP9) involved in the development of TAA/D. This study aims to investigate the role of lncRNA RP11-465L10.10 in VSMCs phenotype switching and the molecular mechanism in regulating MMP9 expression. Methods The expression of RP11-465L10.10 in vascular tissues and in VMSCs was detected by RT-qPCR. To investigate the role of RP11-465L10.10 on VSMCs phenotype switching, an RP11-465L10.10-overexpressed lentiviral vector was constructed and transfected into VSMCs. Through EdU staining, migration assay, flow cytometry analysis, the roles of RP11-465L10.10 were estimated. Bioinformatics indicated that RP11-465L10.10 upregulating MMP9 expression via NF-κB signaling, and SN50 (a specific inhibitor of NF-κB pathway) was used to inhibit the NF-κB pathway activation, then the expression of MMP9 was detected in RP11-465L10.10 overexpressed VMSCs. Results In this study, we found RP11-465L10.10 and MMP9 were highly increased in TAD patient tissues, which was consistent in angiotensin II-induced VSMCs phenotype switching. RP11-465L10.10 overexpression facilitated VSMCs phenotype switching and MMP9 expression. Mechanismly, NF-κB signal pathway was involved in RP11-465L10.10 induced VSMCs phenotype switching and MMP9 expression by transcriptome data analysis and experimental confirm. Conclusion This study demonstrated that RP11-465L10.10 induces VSMCs phenotype switching and MMP9 expression via the NF-κB signal pathway, suggesting that RP11-465L10.10 might be a potential therapeutic target for TAA/D treatment.
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Affiliation(s)
- Yang Lin
- Department of Cardiovascular Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Haoyue Huang
- Department of Cardiovascular Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China.,Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - You Yu
- Department of Cardiovascular Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China.,Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Feng Zhu
- Department of Cardiovascular Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Weizhang Xiao
- Department of Cardiovascular Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Ziying Yang
- Department of Cardiovascular Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China.,Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Lianbo Shao
- Department of Cardiovascular Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China.,Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Zhenya Shen
- Department of Cardiovascular Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China.,Institute for Cardiovascular Science, Soochow University, Suzhou, China
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Smooth muscle 22 alpha protein inhibits VSMC foam cell formation by supporting normal LXRα signaling, ameliorating atherosclerosis. Cell Death Dis 2021; 12:982. [PMID: 34686657 PMCID: PMC8536684 DOI: 10.1038/s41419-021-04239-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 09/11/2021] [Accepted: 09/29/2021] [Indexed: 12/31/2022]
Abstract
Vascular smooth muscle cells (VSMCs) are indispensable components in foam cell formation in atherosclerosis. However, the mechanism behind foam cell formation of VSMCs has not been addressed. We found a potential association between deletion of smooth muscle (SM) 22α and deregulated nuclear receptors liver X receptors (LXRs)/retinoid X receptor (RXR) signaling in mice. Here, we investigated the roles of SM22α in LXRα-modulated cholesterol homeostasis, and explore possible mechanisms underlying this process. We identified that the depletion of SM22α was a primary event driving VSMC cholesterol accumulation and the development of atherosclerosis in mice. Proteomic and lipidomic analysis validated that downregulation of SM22α was correlated with reduced expression of LXRα and ATP-binding cassette transporter (ABCA) 1 and increased cholesteryl ester in phenotypically modulated VSMCs induced by platelets-derived growth factor (PDGF)-BB. Notably, LXRα was mainly distributed in the cytoplasm rather than the nucleus in the neointimal and Sm22α-/- VSMCs. Loss of SM22α inhibited the nuclear import of LXRα and reduced ABCA1-mediated cholesterol efflux via promoting depolymerization of actin stress fibers. Affinity purification and mass spectrometry (AP-MS) analysis, co-immunoprecipitation and GST pull-down assays, confocal microscopy, and stochastic optical reconstruction microscopy (STORM) revealed that globular-actin (G-actin), monomeric actin, interacted with and retained LXRα in the cytoplasm in PDGF-BB-treated and Sm22α-/- VSMCs. This interaction blocked LXRα binding to Importin α, a karyopherin that mediates the trafficking of macromolecules across the nuclear envelope, and the resulting reduction of LXRα transcriptional activity. Increasing SM22α expression restored nuclear localization of LXRα and removed cholesterol accumulation via inducing actin polymerization, ameliorating atherosclerosis. Our findings highlight that LXRα is a mechanosensitive nuclear receptor and that the nuclear import of LXRα maintained by the SM22α-actin axis is a potential target for blockade of VSMC foam cell formation and development of anti-atherosclerosis.
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10
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Wen F, Sun X, Sun C, Dong Z, Jia G, Bao W, Yu H, Yang C. TAGLN Is Downregulated by TRAF6-Mediated Proteasomal Degradation in Prostate Cancer Cells. Mol Cancer Res 2021; 19:1113-1122. [PMID: 33771884 DOI: 10.1158/1541-7786.mcr-20-0513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 11/02/2020] [Accepted: 03/23/2021] [Indexed: 11/16/2022]
Abstract
Transgelin (TAGLN, also named SM22) is an actin-associated protein and affects dynamics of actin filaments. Deregulation of TAGLN contributes to the development of different cancers, and it is commonly considered to be a tumor suppressor. TAGLN is usually downregulated in prostate cancer; however, the detailed functions of TAGLN in prostate cancer and how TAGLN is regulated remains unclear. In this study, we confirmed that TAGLN is downregulated in prostate cancer tissues and demonstrated that the downregulation of TAGLN occurs through proteasomal degradation. Next, we found that the expression level of TAGLN is inversely correlated with TRAF6. We screened more than 20 E2-E3 pairs by in vitro ubiquitination assay and found that the E2A-TRAF6 pair catalyzed mono ubiquitination of TAGLN. We then identified the ubiquitination sites of TAGLN to be on K89 or K108 residues and demonstrated that ubiquitination of TAGLN on K89/K108 are important for TRAF6-mediated proteasomal degradation. Furthermore, we investigated the function of TAGLN in prostate cancer cells. We found that ablation of TAGLN promoted prostate cancer cell proliferation and suppressed their migration via activation of NF-κB and Myc signaling pathways. Overall, our study provided new insights into the mechanisms underlying TAGLN expression and activity in prostate cancer. IMPLICATIONS: E3 ligase TRAF6 mediate mono-ubiquitination and degradation of TAGLN, which leads to activation of NF-κB and Myc signaling pathways in prostate cancer cells.
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Affiliation(s)
- Fuping Wen
- Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai, China.,CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China.,State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China
| | - Xiaochen Sun
- Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai, China.,CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Chenxia Sun
- Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai, China.,CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Zhenyang Dong
- Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Gaozhen Jia
- Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Wei Bao
- Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai, China.,CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Haolan Yu
- Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai, China.,CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Chenghua Yang
- Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai, China. .,CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
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11
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SM22 α Loss Contributes to Apoptosis of Vascular Smooth Muscle Cells via Macrophage-Derived circRasGEF1B. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5564884. [PMID: 33859778 PMCID: PMC8026322 DOI: 10.1155/2021/5564884] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/24/2021] [Accepted: 03/02/2021] [Indexed: 11/18/2022]
Abstract
Vascular smooth muscle cell (VSMC) apoptosis is a major defining feature of abdominal aortic aneurysm (AAA) and mainly caused by inflammatory cell infiltration. Smooth muscle (SM) 22α prevents AAA formation through suppressing NF-κB activation. However, the role of SM22α in VSMC apoptosis is controversial. Here, we identified that SM22α loss contributed to apoptosis of VSMCs via activation of macrophages. Firstly, deficiency of SM22α enhanced the interaction of VSMCs with macrophages. Macrophages were retained and activated by Sm22α−/− VSMCs via upregulating VCAM-1 expression. The ratio of apoptosis was increased by 1.62-fold in VSMCs treated with the conditional media (CM) from activated RAW264.7 cells, compared to that of the control CM (P < 0.01), and apoptosis of Sm22α−/− VSMCs was higher than that of WT VSMCs (P < 0.001). Next, circRasGEF1B from activated macrophages was delivered into VSMCs promoting ZFP36 expression via stabilization of ZFP36 mRNA. Importantly, circRasGEF1B, as a scaffold, guided ZFP36 to preferentially bind to and decay Bcl-2 mRNA in a sequence-specific manner and triggered apoptosis of VSMCs, especially in Sm22α−/− VSMCs. These findings reveal a novel mechanism by which the circRasGEF1B-ZFP36 axis mediates macrophage-induced VSMC apoptosis via decay of Bcl-2 mRNA, whereas Sm22α−/− VSMCs have a higher sensitivity to apoptosis.
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12
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Xin L, Gao J, Lin H, Qu Y, Shang C, Wang Y, Lu Y, Cui X. Regulatory Mechanisms of Baicalin in Cardiovascular Diseases: A Review. Front Pharmacol 2020; 11:583200. [PMID: 33224035 PMCID: PMC7667240 DOI: 10.3389/fphar.2020.583200] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 09/15/2020] [Indexed: 12/17/2022] Open
Abstract
Cardiovascular diseases (CVDs) is the leading cause of high morbidity and mortality worldwide, which emphasizes the urgent necessity to develop new pharmacotherapies. In eastern countries, traditional Chinese medicine Scutellaria baicalensis Georgi has been used clinically for thousands of years. Baicalin is one of the main active ingredients extracted from Chinese herbal medicine S. baicalensis. Emerging evidence has established that baicalin improves chronic inflammation, immune imbalance, disturbances in lipid metabolism, apoptosis and oxidative stress. Thereby it offers beneficial roles against the initiation and progression of CVDs such as atherosclerosis, hypertension, myocardial infarction and reperfusion, and heart failure. In this review, we summarize the pharmacological features and relevant mechanisms by which baicalin regulates CVDs in the hope to reveal its application for CVDs prevention and/or therapy.
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Affiliation(s)
- Laiyun Xin
- The First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, China.,Department of Cardiology, Guang' anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jialiang Gao
- Department of Cardiology, Guang' anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Hongchen Lin
- Department of Cardiology, Guang' anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yi Qu
- Department of Cardiology, Guang' anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Chang Shang
- Department of Cardiology, Guang' anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yuling Wang
- Department of Cardiology, Guang' anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yingdong Lu
- Department of Cardiology, Guang' anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiangning Cui
- Department of Cardiology, Guang' anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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13
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Gao Y, Liu G, Kong P, Song Y, Zhang D, Yin Y, Han M. Smooth muscle 22α deficiency impairs oxytocin-induced uterine contractility in mice at full-term pregnancy. Biochem Biophys Res Commun 2020; 529:884-889. [PMID: 32819594 DOI: 10.1016/j.bbrc.2020.05.220] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 05/30/2020] [Indexed: 11/18/2022]
Abstract
Smooth muscle 22α (SM22α, namely Transgelin), as an actin-binding protein, regulates the contractility of vascular smooth muscle cells (VSMCs) by modulation of the stress fiber formation. However, little is known about the roles of SM22α in the regulation of uterine contraction during parturition. Here, we showed that contraction in response to oxytocin (OT) was significantly decreased in the uterine muscle strips from SM22α knockout (Sm22α-KO) mice, especially at full-term pregnancy, which may be resulted from impaired formation of stress fibers. Furthermore, serious mitochondrial damage such as the mitochondrial swelling, cristae disruption and even disappearance were observed in the myometrium of Sm22α-KO mice at full-term pregnancy, eventually resulting in the collapse of mitochondrial membrane potential and impairment in ATP synthesis. Our data indicate that SM22α is necessary to maintain uterine contractility at delivery in mice, and acts as a novel target for preventive or therapeutic manipulation of uterine atony during parturition.
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MESH Headings
- Adenosine Triphosphate/deficiency
- Animals
- Female
- Gene Expression Regulation
- Mice
- Mice, Knockout
- Microfilament Proteins/deficiency
- Microfilament Proteins/genetics
- Mitochondria/drug effects
- Mitochondria/genetics
- Mitochondria/metabolism
- Mitochondrial Swelling/genetics
- Muscle Proteins/deficiency
- Muscle Proteins/genetics
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Myometrium/drug effects
- Myometrium/metabolism
- Myometrium/pathology
- Oxytocin/pharmacology
- Parturition
- Pregnancy
- Primary Cell Culture
- Stress Fibers/drug effects
- Stress Fibers/metabolism
- Stress Fibers/pathology
- Tissue Culture Techniques
- Uterine Contraction/drug effects
- Uterine Inertia/genetics
- Uterine Inertia/metabolism
- Uterine Inertia/pathology
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Affiliation(s)
- Yakun Gao
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Guixia Liu
- Department of Pathogenic Biology, Hebei Medical University, Shijiazhuang, China
| | - Peng Kong
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Yu Song
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Dandan Zhang
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Yajuan Yin
- The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Mei Han
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang, China.
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14
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Zhong L, He X, Si X, Wang H, Li B, Hu Y, Li M, Chen X, Liao W, Liao Y, Bin J. SM22α (Smooth Muscle 22α) Prevents Aortic Aneurysm Formation by Inhibiting Smooth Muscle Cell Phenotypic Switching Through Suppressing Reactive Oxygen Species/NF-κB (Nuclear Factor-κB). Arterioscler Thromb Vasc Biol 2019; 39:e10-e25. [PMID: 30580562 DOI: 10.1161/atvbaha.118.311917] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Objective- Vascular smooth muscle cell phenotypic transition plays a critical role in the formation of abdominal aortic aneurysms (AAAs). SM22α (smooth muscle 22α) has a vital role in maintaining the smooth muscle cell phenotype and is downregulated in AAA. However, whether manipulation of the SM22α gene influences the pathogenesis of AAA is unclear. Here, we investigated whether SM22α prevents AAA formation and explored the underlying mechanisms. Approach and Results- In both human and animal AAA tissues, a smooth muscle cell phenotypic switch was confirmed, as manifested by the downregulation of SM22α and α-SMA (α-smooth muscle actin) proteins. The methylation level of the SM22α gene promoter was dramatically higher in mouse AAA tissues than in control tissues. SM22α knockdown in ApoE-/- (apolipoprotein E-deficient) mice treated with Ang II (angiotensin II) accelerated the formation of AAAs, as evidenced by a larger maximal aortic diameter and more medial elastin degradation than those found in control mice, whereas SM22α overexpression exerted opposite effects. Similar results were obtained in a calcium chloride-induced mouse AAA model. Mechanistically, SM22α deficiency significantly increased reactive oxygen species production and NF-κB (nuclear factor-κB) activation in AAA tissues, whereas SM22α overexpression produced opposite effects. NF-κB antagonist SN50 or antioxidant N-acetyl-L-cysteine partially abrogated the exacerbating effects of SM22α silencing on AAA formation. Conclusions- SM22α reduction in AAAs because of the SM22α promoter hypermethylation accelerates AAA formation through the reactive oxygen species/NF-κB pathway, and therapeutic approaches to increase SM22α expression are potentially beneficial for preventing AAA formation.
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Affiliation(s)
- Lintao Zhong
- From the Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China (L.Z., X.H., X.S., H.W., B.L., Y.H., M.L., X.C., Y.L., J.B.)
| | - Xiang He
- From the Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China (L.Z., X.H., X.S., H.W., B.L., Y.H., M.L., X.C., Y.L., J.B.)
| | - Xiaoyun Si
- From the Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China (L.Z., X.H., X.S., H.W., B.L., Y.H., M.L., X.C., Y.L., J.B.)
| | - He Wang
- From the Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China (L.Z., X.H., X.S., H.W., B.L., Y.H., M.L., X.C., Y.L., J.B.)
| | - Bing Li
- From the Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China (L.Z., X.H., X.S., H.W., B.L., Y.H., M.L., X.C., Y.L., J.B.)
| | - Yinlan Hu
- From the Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China (L.Z., X.H., X.S., H.W., B.L., Y.H., M.L., X.C., Y.L., J.B.)
| | - Mengsha Li
- From the Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China (L.Z., X.H., X.S., H.W., B.L., Y.H., M.L., X.C., Y.L., J.B.)
| | - Xiaoqiang Chen
- From the Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China (L.Z., X.H., X.S., H.W., B.L., Y.H., M.L., X.C., Y.L., J.B.)
| | - Wangjun Liao
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China (W.L.)
| | - Yulin Liao
- From the Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China (L.Z., X.H., X.S., H.W., B.L., Y.H., M.L., X.C., Y.L., J.B.)
| | - Jianping Bin
- From the Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China (L.Z., X.H., X.S., H.W., B.L., Y.H., M.L., X.C., Y.L., J.B.)
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15
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Kong P, Yu Y, Wang L, Dou YQ, Zhang XH, Cui Y, Wang HY, Yong YT, Liu YB, Hu HJ, Cui W, Sun SG, Li BH, Zhang F, Han M. circ-Sirt1 controls NF-κB activation via sequence-specific interaction and enhancement of SIRT1 expression by binding to miR-132/212 in vascular smooth muscle cells. Nucleic Acids Res 2019; 47:3580-3593. [PMID: 30820544 PMCID: PMC6468289 DOI: 10.1093/nar/gkz141] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 01/31/2019] [Accepted: 02/20/2019] [Indexed: 12/12/2022] Open
Abstract
NF-κB-mediated inflammatory phenotypic switching of vascular smooth muscle cells (VSMCs) plays a central role in atherosclerosis and neointimal formation. However, little is known about the roles of circRNAs in the regulation of NF-κB signaling. Here, we identify the involvement of circ-Sirt1 that was one of transcripts of SIRT1 host gene in VSMC inflammatory response and neointimal hyperplasia. First, in the cytoplasm, circ-Sirt1 directly interacts with and sequesters NF-κB p65 from nuclear translocation induced by TNF-α in a sequence-dependent manner. The inhibitory complex of circ-Sirt1-NF-κB p65 is not dependent on IκBα. Second, circ-Sirt1 binds to miR-132/212 that interferes with SIRT1 mRNA, and facilitates the expression of host gene SIRT1. Increased SIRT1 results in deacetylation and inactivation of the nuclear NF-κB p65. These findings illustrate that circ-Sirt1 is a novel non-coding RNA regulator of VSMC phenotype.
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Affiliation(s)
- Peng Kong
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Yuan Yu
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Lu Wang
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Yong-Qing Dou
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Xu-Hui Zhang
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Yan Cui
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Hai-Yue Wang
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Yu-Tao Yong
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Ya-Bin Liu
- Department of Surgery, the Fourth Affiliated Hospital, Hebei Medical University, Shijiazhuang, China
| | - Hai-Juan Hu
- Department of Cardiovascular Medicine, the Second Hospital, Hebei Medical University, Shijiazhuang, China
| | - Wei Cui
- Department of Cardiovascular Medicine, the Second Hospital, Hebei Medical University, Shijiazhuang, China
| | - Shao-Guang Sun
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Bing-Hui Li
- Department of Surgery, the Fourth Affiliated Hospital, Hebei Medical University, Shijiazhuang, China
| | - Fan Zhang
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Mei Han
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, Shijiazhuang, China
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16
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Shen W, Anwaier G, Cao Y, Lian G, Chen C, Liu S, Tuerdi N, Qi R. Atheroprotective Mechanisms of Tilianin by Inhibiting Inflammation Through Down-Regulating NF-κB Pathway and Foam Cells Formation. Front Physiol 2019; 10:825. [PMID: 31333487 PMCID: PMC6614704 DOI: 10.3389/fphys.2019.00825] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Accepted: 06/13/2019] [Indexed: 12/11/2022] Open
Abstract
Tilianin, a representative flavonoid ingredient of Dracocephalum moldavica L., has been used to treat several diseases for centuries, including atherosclerosis (AS). However, pharmacological mechanisms underlying its biological functions remain elusive. In the present study, we investigated the anti-AS mechanisms of tilianin through establishing in vitro models using three types of cells that contributed to AS progression, including macrophage, vascular smooth muscle cells and human umbilical vein endothelial cells, which were proved to be involve in LPS/TNF-α/oxidized low density lipoprotein (ox-LDL)-induced inflammation and ox-LDL induced foam cell formation. Our results indicate that tilianin significantly suppressed LPS induced inflammatory responses on macrophage and remarkably inhibited TNF-α induced VSMCs proliferation and migration. Furthermore, the anti-inflammatory effect of tilianin on macrophages and VSMCs was proved to be mainly by downregulating TNF-α/NF-κB pathway. Moreover, our results demonstrate that tilianin significantly ameliorated ox-LDL induced macrophages oriented foam cells formation through repressing mRNA expression of SR-A1 and inducting the expression of genes related to cholesterol efflux including SRB-1 and ABCA1. However, tilianin had no effect on ox-LDL induced HUVECs injury.
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Affiliation(s)
- Wanli Shen
- School of Pharmacy, Shihezi University, Shihezi, China.,Institute of Cardiovascular Sciences, Peking University Health Science Center, Peking University, Beijing, China.,Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China.,Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, Beijing, China
| | - Gulinigaer Anwaier
- School of Basic Medical Science, Shihezi University, Shihezi, China.,Institute of Cardiovascular Sciences, Peking University Health Science Center, Peking University, Beijing, China.,Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China.,Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, Beijing, China
| | - Yini Cao
- Institute of Cardiovascular Sciences, Peking University Health Science Center, Peking University, Beijing, China.,Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China.,Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, Beijing, China
| | - Guan Lian
- School of Pharmacy, Shihezi University, Shihezi, China.,Institute of Cardiovascular Sciences, Peking University Health Science Center, Peking University, Beijing, China.,Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China.,Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, Beijing, China
| | - Cong Chen
- Institute of Cardiovascular Sciences, Peking University Health Science Center, Peking University, Beijing, China.,Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China.,Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, Beijing, China
| | - Shu Liu
- School of Pharmacy, Shihezi University, Shihezi, China.,Institute of Cardiovascular Sciences, Peking University Health Science Center, Peking University, Beijing, China.,Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China.,Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, Beijing, China
| | - Nuerbiye Tuerdi
- School of Basic Medical Science, Shihezi University, Shihezi, China.,Institute of Cardiovascular Sciences, Peking University Health Science Center, Peking University, Beijing, China.,Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China.,Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, Beijing, China
| | - Rong Qi
- School of Basic Medical Science, Shihezi University, Shihezi, China.,School of Pharmacy, Shihezi University, Shihezi, China.,Institute of Cardiovascular Sciences, Peking University Health Science Center, Peking University, Beijing, China.,Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China.,Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, Beijing, China
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17
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Upadhyay KD, Dodia NM, Khunt RC, Chaniara RS, Shah AK. Evaluation and in vivo efficacy study of pyrano[3,2‐c]quinoline analogues as TNF‐α inhibitors. Chem Biol Drug Des 2019; 94:1647-1655. [DOI: 10.1111/cbdd.13566] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 04/15/2019] [Accepted: 04/18/2019] [Indexed: 12/25/2022]
Affiliation(s)
| | | | | | | | - Anamik K. Shah
- National Facility for Drug Discovery (NFDD) Saurashtra University Rajkot India
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18
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Dai X, Thiagarajan D, Fang J, Shen J, Annam NP, Yang Z, Jiang H, Ju D, Xie Y, Zhang K, Tseng YY, Yang Z, Rishi AK, Li HJ, Yang M, Li L. SM22α suppresses cytokine-induced inflammation and the transcription of NF-κB inducing kinase (Nik) by modulating SRF transcriptional activity in vascular smooth muscle cells. PLoS One 2017; 12:e0190191. [PMID: 29284006 PMCID: PMC5746259 DOI: 10.1371/journal.pone.0190191] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 12/08/2017] [Indexed: 12/13/2022] Open
Abstract
Vascular smooth muscle cell (VSMC) phenotypic modulation is characterized by the downregulation of SMC actin cytoskeleton proteins. Our published study shows that depletion of SM22α (aka SM22, Transgelin, an actin cytoskeleton binding protein) promotes inflammation in SMCs by activating NF-κB signal pathways both in cultured VSMCs and in response to vascular injury. The goal of this study is to investigate the underlying molecular mechanisms whereby SM22 suppresses NF-κB signaling pathways under inflammatory condition. NF-κB inducing kinase (Nik, aka MAP3K14, activated by the LTβR) is a key upstream regulator of NF-κB signal pathways. Here, we show that SM22 overexpression suppresses the expression of NIK and its downstream NF-κB canonical and noncanonical signal pathways in a VSMC line treated with a LTβR agonist. SM22 regulates NIK expression at both transcriptional and the proteasome-mediated post-translational levels in VSMCs depending on the culture condition. By qPCR, chromatin immunoprecipitation and luciferase assays, we found that Nik is a transcription target of serum response factor (SRF). Although SM22 is known to be expressed in the cytoplasm, we found that SM22 is also expressed in the nucleus where SM22 interacts with SRF to inhibit the transcription of Nik and prototypical SRF regulated genes including c-fos and Egr3. Moreover, carotid injury increases NIK expression in Sm22-/- mice, which is partially relieved by adenovirally transduced SM22. These findings reveal for the first time that SM22 is expressed in the nucleus in addition to the cytoplasm of VSMCs to regulate the transcription of Nik and its downstream proinflammatory NF-kB signal pathways as a modulator of SRF during vascular inflammation.
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Affiliation(s)
- Xiaohua Dai
- Department of Internal Medicine, Wayne State University, Detroit, Michigan, United States of America
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan, United States of America
| | - Devi Thiagarajan
- Department of Internal Medicine, Wayne State University, Detroit, Michigan, United States of America
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan, United States of America
| | - Jingye Fang
- Department of Internal Medicine, Wayne State University, Detroit, Michigan, United States of America
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan, United States of America
| | - Jianbin Shen
- Department of Internal Medicine, Wayne State University, Detroit, Michigan, United States of America
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan, United States of America
| | - Neeraja Priyanka Annam
- Department of Biochemistry and Molecular Biology, Wayne State University, Detroit, Michigan, United States of America
| | - Zhao Yang
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan, United States of America
| | - Hong Jiang
- Department of Internal Medicine, Wayne State University, Detroit, Michigan, United States of America
| | - Donghong Ju
- Department of Internal Medicine, Wayne State University, Detroit, Michigan, United States of America
- Department of Oncology, Barbara Ann Karmanos Cancer Institute, Wayne State University, Detroit, Michigan, United States of America
| | - Youming Xie
- Department of Oncology, Barbara Ann Karmanos Cancer Institute, Wayne State University, Detroit, Michigan, United States of America
| | - Kezhong Zhang
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan, United States of America
- Cardiovascular Research Institute, Wayne State University, Detroit, Michigan, United States of America
| | - Yan Yuan Tseng
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan, United States of America
| | - Zhe Yang
- Department of Biochemistry and Molecular Biology, Wayne State University, Detroit, Michigan, United States of America
| | - Arun K. Rishi
- Department of Oncology, Barbara Ann Karmanos Cancer Institute, Wayne State University, Detroit, Michigan, United States of America
- John D. Dingell VA Medical Center, Detroit, Michigan, United States of America
| | - Hui J. Li
- Department of Medicine, University of Massachusetts, Worcester, Massachusetts, United States of America
| | - Maozhou Yang
- Bone and Joint Center, Henry Ford Hospital, Detroit, Michigan, United States of America
| | - Li Li
- Department of Internal Medicine, Wayne State University, Detroit, Michigan, United States of America
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan, United States of America
- Cardiovascular Research Institute, Wayne State University, Detroit, Michigan, United States of America
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19
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Regnault V, Lacolley P. Sirtuin 1 steers anti-inflammatory effects in vascular smooth muscle cells: protection without burden? Cardiovasc Res 2017; 113:1096-1098. [DOI: 10.1093/cvr/cvx131] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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20
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The arterial microenvironment: the where and why of atherosclerosis. Biochem J 2017; 473:1281-95. [PMID: 27208212 DOI: 10.1042/bj20150844] [Citation(s) in RCA: 117] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 02/15/2016] [Indexed: 12/11/2022]
Abstract
The formation of atherosclerotic plaques in the large and medium sized arteries is classically driven by systemic factors, such as elevated cholesterol and blood pressure. However, work over the past several decades has established that atherosclerotic plaque development involves a complex coordination of both systemic and local cues that ultimately determine where plaques form and how plaques progress. Although current therapeutics for atherosclerotic cardiovascular disease primarily target the systemic risk factors, a large array of studies suggest that the local microenvironment, including arterial mechanics, matrix remodelling and lipid deposition, plays a vital role in regulating the local susceptibility to plaque development through the regulation of vascular cell function. Additionally, these microenvironmental stimuli are capable of tuning other aspects of the microenvironment through collective adaptation. In this review, we will discuss the components of the arterial microenvironment, how these components cross-talk to shape the local microenvironment, and the effect of microenvironmental stimuli on vascular cell function during atherosclerotic plaque formation.
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21
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Shu YN, Dong LH, Li H, Pei QQ, Miao SB, Zhang F, Zhang DD, Chen R, Yin YJ, Lin YL, Xue ZY, Lv P, Xie XL, Zhao LL, Nie X, Chen P, Han M. CKII-SIRT1-SM22α loop evokes a self-limited inflammatory response in vascular smooth muscle cells. Cardiovasc Res 2017; 113:1198-1207. [DOI: 10.1093/cvr/cvx048] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 03/11/2017] [Indexed: 11/15/2022] Open
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Zhang JY, Lei L, Shang J, Huo TM, Zhang B, Chen G, Zeng ZY, Li SK. Local application of paeonol prevents early restenosis: a study with a rabbit vein graft model. J Surg Res 2016; 212:278-287. [PMID: 28550918 DOI: 10.1016/j.jss.2016.11.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 11/07/2016] [Accepted: 11/10/2016] [Indexed: 11/17/2022]
Abstract
BACKGROUND Neointimal hyperplasia, which is caused by dysfunction of vascular smooth muscle cells and vascular endothelial cells (VECs), is a foundation for later development of vein grafted occlusion. This study investigates whether neointimal hyperplasia could be prevented by the application of paeonol, a phenolic compound having functions of anti-inflammatory, anti-oxidant, and anti-proliferative. METHODS Autologous jugular veins, which engrafted to carotid arteries in rabbits, were enveloped with paeonol or left untreated. After 0, 2, and 3 wk, vein grafts were respectively harvested. Proliferating cell nuclear antigen, vascular cell adhesion molecule l (VCAM-1), and intercellular cell adhesion molecule 1 were assessed with immunohistochemistry and Western blot. VECs apoptosis was also detected with terminal deoxynucleotidyl transferase (TdT)-mediated dUTP nick end labeling assay. RESULTS Paeonol treatment reduced early neointimal hyperplasia by 42%-46% (P < 0.001) and early medial hyperplasia by 18%-22% (P < 0.001) compared with the controls. Immunohistochemical and Western blot results show a significant downregulation of proliferating cell nuclear antigen (P < 0.001) and VCAM-1 (P < 0.001) in paeonol treatment group in the second and third weeks. Terminal deoxynucleotidyl transferase (TdT)-mediated dUTP nick end labeling analysis discovered that VECs apoptosis was also reduced by the paeonol treatment in the second and third weeks (P < 0.001). CONCLUSIONS Paeonol could prevent vein graft early restenosis by suppressing intimal and medial hyperplasia via inhibition of vascular smooth muscle cells proliferation, VCAM-1 expression, and anti-apoptosis of VECs in grafted veins.
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Affiliation(s)
- Jue-Yu Zhang
- Department of Thoracic and Cardiovascular Diseases, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Luo Lei
- Department of Thoracic and Cardiovascular Diseases, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jun Shang
- Department of Thoracic and Cardiovascular Diseases, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Tian-Ming Huo
- Department of Thoracic and Cardiovascular Diseases, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Bo Zhang
- Department of Thoracic and Cardiovascular Diseases, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Gang Chen
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Zhi-Yu Zeng
- Department of Cardiology, First Affiliated Hospital of Guangxi Medical University, Nanning, China.
| | - Shi-Kang Li
- Department of Thoracic and Cardiovascular Diseases, First Affiliated Hospital of Guangxi Medical University, Nanning, China.
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23
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Lv P, Zhang F, Yin YJ, Wang YC, Gao M, Xie XL, Zhao LL, Dong LH, Lin YL, Shu YN, Zhang DD, Liu GX, Han M. SM22α inhibits lamellipodium formation and migration via Ras-Arp2/3 signaling in synthetic VSMCs. Am J Physiol Cell Physiol 2016; 311:C758-C767. [PMID: 27629412 DOI: 10.1152/ajpcell.00033.2016] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 09/07/2016] [Indexed: 02/03/2023]
Abstract
We previously demonstrated that smooth muscle (SM) 22α promotes the migration activity in contractile vascular smooth muscle cells (VSMCs). Based on the varied functions exhibited by SM22α in different VSMC phenotypes, we investigated the effect of SM22α on VSMC migration under pathological conditions. The results demonstrated that SM22α overexpression in synthetic VSMCs inhibited platelet-derived growth factor (PDGF)-BB-induced cell lamellipodium formation and migration, which was different from its action in contractile cells. The results indicated two distinct mechanisms underlying inhibition of lamellipodium formation by SM22α, increased actin dynamic stability and decreased Ras activity via interference with interactions between Ras and guanine nucleotide exchange factor. The former inhibited actin cytoskeleton rearrangement in the cell cortex, while the latter significantly disrupted actin nucleation activation of the Arp2/3 complex. Baicalin, a herb-derived flavonoid compound, inhibited VSMC migration via upregulation of SM22α expression in vitro and in vivo. These data suggest that SM22α regulates lamellipodium formation and cell migration in a phenotype-dependent manner in VSMCs, which may be a new therapeutic target for vascular lesion formation.
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Affiliation(s)
- Pin Lv
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Fan Zhang
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Ya-Juan Yin
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Yu-Can Wang
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Min Gao
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Xiao-Li Xie
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Li-Li Zhao
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Li-Hua Dong
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Yan-Ling Lin
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Ya-Nan Shu
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Dan-Dan Zhang
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Gui-Xia Liu
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Mei Han
- Key Laboratory of Medical Biotechnology of Hebei Province, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, China
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24
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Insulin-independent GLUT4 translocation in proliferative vascular smooth muscle cells involves SM22α. J Mol Med (Berl) 2016; 95:181-192. [DOI: 10.1007/s00109-016-1468-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Revised: 08/22/2016] [Accepted: 08/24/2016] [Indexed: 01/30/2023]
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