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Zhou YH, Tang YZ, Guo LY, Zheng LL, Zhang D, Yang CY, Wang W. Overexpression of sFlt-1 represses ox-LDL-induced injury of HUVECs by activating autophagy via PI3K/AKT/mTOR pathway. Microvasc Res 2021; 139:104252. [PMID: 34520772 DOI: 10.1016/j.mvr.2021.104252] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 08/26/2021] [Accepted: 09/06/2021] [Indexed: 10/20/2022]
Abstract
Soluble fms-like tyrosine kinase-1 (sFlt-1), a circulating antiangiogenic protein, is involved in the pathogenesis of atherosclerosis (AS), and the underlying mechanism is still unclear. Here, we attempted to investigate the mechanism of action of sFlt-1 in AS. Human umbilical vein endothelial cells (HUVECs) were treated with oxidized low density lipoprotein (ox-LDL) to induce cell injury. ox-LDL treatment increased LC3-II/LC3-I ratio, Beclin-1 expression and GFP-LC3 puncta in HUVECs, suggesting that ox-LDL may induce autophagic flux impairment in HUVECs. ox-LDL-treated HUVECs displayed a decrease of sFlt-1 levels. Moreover, ox-LDL treatment reduced cell proliferation and elevated apoptosis in HUVECs, which was abrogated by sFlt-1 overexpression. Up-regulation of sFlt-1 repressed the activity of PI3K/AKT/mTOR signaling pathway and enhanced autophagy in HUVECs following ox-LDL treatment. Additionally, sFlt-1 overexpression-mediated increase of autophagy in ox-LDL-treated HUVECs was abolished by 3-methyladenine (autophagy inhibitor). 3-methyladenine abrogated the impact of sFlt-1 overexpression on proliferation and apoptosis in ox-LDL-treated HUVECs. This work confirmed that overexpression of sFlt-1 activated autophagy by repressing PI3K/Akt/mTOR signaling pathway, and thus alleviated ox-LDL-induced injury of HUVECs. Therefore, this study suggests that sFlt-1 may be a potential target for AS treatment.
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Affiliation(s)
- Yi-Hua Zhou
- Department of ICU, The Second Affiliated Hospital of Nanchang University, No. 1 Minde Road, Nanchang, Jiangxi 330006, China
| | - Yu-Zhi Tang
- Department of Ultrasound, The Second Affiliated Hospital of Nanchang University, No. 1 Minde Road, Nanchang, Jiangxi 330006, China
| | - Liang-Yun Guo
- Department of Ultrasound, The Second Affiliated Hospital of Nanchang University, No. 1 Minde Road, Nanchang, Jiangxi 330006, China
| | - Li-Li Zheng
- Department of Pharmacy, Jiangxi Maternal and Child Health Hospital, Nanchang, Jiangxi 330006, China
| | - Dan Zhang
- Department of Ultrasound, The Second Affiliated Hospital of Nanchang University, No. 1 Minde Road, Nanchang, Jiangxi 330006, China
| | - Can-Ying Yang
- Department of Ultrasound, The Second Affiliated Hospital of Nanchang University, No. 1 Minde Road, Nanchang, Jiangxi 330006, China
| | - Wei Wang
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, No. 1 Minde Road, Nanchang, Jiangxi 330006, China.
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Mochida A, Mita T, Azuma K, Osonoi Y, Masuyama A, Nakajima K, Goto H, Nishida Y, Miyatsuka T, Mitsumata M, Watada H. Defective autophagy in vascular smooth muscle cells enhances the healing of abdominal aortic aneurysm. Physiol Rep 2021; 9:e15000. [PMID: 34491001 PMCID: PMC8422599 DOI: 10.14814/phy2.15000] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 07/02/2021] [Accepted: 07/18/2021] [Indexed: 11/24/2022] Open
Abstract
Autophagy is an evolutionarily conserved cellular catabolic process essential for cell homeostasis, and thus its failure is associated with several diseases. While autophagy has been reported to play a role in vascular smooth muscle cells (SMCs) in vascular disorders, its precise role in the pathogenesis of abdominal aortic aneurysm (AAA) has not yet been elucidated. In this study, we investigated the role of SMC autophagy in AAA formation. As a mouse model of AAA, we used control apolipoprotein E-deficient (apoeKO) mice and Atg7cKO (SMC-specific Atg7-deficient mice):apoeKO mice administered angiotensin II for 4 weeks. Intriguingly, Kaplan-Meier curves showed that the survival rates of Atg7cKO:apoeKO mice were significantly higher than those of apoeKO mice. The hematoma area in AAA of Atg7cKO:apoeKO mice was smaller than in apoeKO mice despite the lack of a significant difference in AAA incidence between the two groups. Furthermore, the amount of granulomatous tissues was significantly larger and the collagen-positive area within AAA was significantly larger in Atg7cKO:apoeKO mice than in apoeKO mice. In accordance with these findings, SMCs cultured from Atg7cKO mice showed increased expression of collagens, independent of angiotensin II action. Taken together, our data suggest that defective autophagy in SMCs elicits AAA healing that may underlie the better survival rate under dyslipidemia and angiotensin II infusion.
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MESH Headings
- Angiotensin II/administration & dosage
- Angiotensin II/toxicity
- Animals
- Aortic Aneurysm, Abdominal/chemically induced
- Aortic Aneurysm, Abdominal/pathology
- Autophagy/drug effects
- Autophagy/physiology
- Cells, Cultured
- Infusion Pumps, Implantable
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Transgenic
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/pathology
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Affiliation(s)
- Akihiro Mochida
- Department of Metabolism & EndocrinologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Tomoya Mita
- Department of Metabolism & EndocrinologyJuntendo University Graduate School of MedicineTokyoJapan
- Center for Therapeutic Innovations in DiabetesJuntendo University Graduate School of MedicineTokyoJapan
- Center for Identification of Diabetic Therapeutic TargetsJuntendo University Graduate School of MedicineTokyoJapan
| | - Kosuke Azuma
- Department of Metabolism & EndocrinologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Yusuke Osonoi
- Department of Metabolism & EndocrinologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Atsushi Masuyama
- Department of Metabolism & EndocrinologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Kenichi Nakajima
- Department of Metabolism & EndocrinologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Hiromasa Goto
- Department of Metabolism & EndocrinologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Yuya Nishida
- Department of Metabolism & EndocrinologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Takeshi Miyatsuka
- Department of Metabolism & EndocrinologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Masako Mitsumata
- Division of PathologyDepartment of Clinical LaboratoryYamanashi Kosei HospitalYamanashi cityYamanashiJapan
| | - Hirotaka Watada
- Department of Metabolism & EndocrinologyJuntendo University Graduate School of MedicineTokyoJapan
- Center for Therapeutic Innovations in DiabetesJuntendo University Graduate School of MedicineTokyoJapan
- Center for Identification of Diabetic Therapeutic TargetsJuntendo University Graduate School of MedicineTokyoJapan
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53
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Bharath LP, Rockhold JD, Conway R. Selective Autophagy in Hyperglycemia-Induced Microvascular and Macrovascular Diseases. Cells 2021; 10:cells10082114. [PMID: 34440882 PMCID: PMC8392047 DOI: 10.3390/cells10082114] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 08/07/2021] [Accepted: 08/13/2021] [Indexed: 02/06/2023] Open
Abstract
Dysregulation of autophagy is an important underlying cause in the onset and progression of many metabolic diseases, including diabetes. Studies in animal models and humans show that impairment in the removal and the recycling of organelles, in particular, contributes to cellular damage, functional failure, and the onset of metabolic diseases. Interestingly, in certain contexts, inhibition of autophagy can be protective. While the inability to upregulate autophagy can play a critical role in the development of diseases, excessive autophagy can also be detrimental, making autophagy an intricately regulated process, the altering of which can adversely affect organismal health. Autophagy is indispensable for maintaining normal cardiac and vascular structure and function. Patients with diabetes are at a higher risk of developing and dying from vascular complications. Autophagy dysregulation is associated with the development of heart failure, many forms of cardiomyopathy, atherosclerosis, myocardial infarction, and microvascular complications in diabetic patients. Here, we review the recent findings on selective autophagy in hyperglycemia and diabetes-associated microvascular and macrovascular complications.
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Autophagy-Related Genes in Atherosclerosis. JOURNAL OF HEALTHCARE ENGINEERING 2021; 2021:6402206. [PMID: 34306596 PMCID: PMC8270709 DOI: 10.1155/2021/6402206] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/02/2021] [Accepted: 06/22/2021] [Indexed: 01/22/2023]
Abstract
Background Atherosclerosis (AS) is a common chronic vascular inflammatory disease and one of the main causes of cardiovascular/cerebrovascular diseases (CVDs). Autophagy-related genes (ARGs) play a crucial part in pathophysiological processes of AS. However, the expression profile of ARGs has rarely been adopted to explore the relationship between autophagy and AS. Therefore, using the expression profile of ARGs to explore the relationship between autophagy and AS may provide new insights for the treatment of CVDs. Methods The differentially expressed ARGs of the GSE57691 dataset were obtained from the Human Autophagy Database (HADb) and the Gene Expression Omnibus (GEO) database, and the GSE57691 dataset contains 9 aortic atheroma tissues and 10 normal aortic tissues. The differentially expressed ARGs of the GSE57691 dataset were analyzed by protein-protein interaction (PPI), gene ontology analysis (GO), and Kyoto Encyclopedia of Genes and Genomes analysis (KEGG) and were chosen to explore related miRNAs/transcriptional factors. Results The GSE57691 dataset had a total of 41 differentially expressed ARGs. The GO analysis results revealed that ARGs were mainly enriched in autophagy, autophagosome, and protein serine/threonine kinase activity. KEGG analysis results showed that ARGs were mainly enriched in autophagy-animal and longevity regulating signaling pathways. Expressions of ATG5, MAP1LC3B, MAPK3, MAPK8, and RB1CC1 were regarded as focus in the PPI regulatory networks. Furthermore, 11 related miRNAs and 6 related transcription factors were obtained by miRNAs/transcription factor target network analysis. Conclusions Autophagy and ARGs may play a vital role in regulating the pathophysiology of AS.
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Shi YN, Liu LP, Deng CF, Zhao TJ, Shi Z, Yan JY, Gong YZ, Liao DF, Qin L. Celastrol ameliorates vascular neointimal hyperplasia through Wnt5a-involved autophagy. Int J Biol Sci 2021; 17:2561-2575. [PMID: 34326694 PMCID: PMC8315023 DOI: 10.7150/ijbs.58715] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 06/07/2021] [Indexed: 12/19/2022] Open
Abstract
Neointimal hyperplasia caused by the excessive proliferation of vascular smooth muscle cells (VSMCs) is the pathological basis of restenosis. However, there are few effective strategies to prevent restenosis. Celastrol, a pentacyclic triterpene, has been recently documented to be beneficial to certain cardiovascular diseases. Based on its significant effect on autophagy, we proposed that celastrol could attenuate restenosis through enhancing autophagy of VSMCs. In the present study, we found that celastrol effectively inhibited the intimal hyperplasia and hyperproliferation of VSMCs by inducing autophagy. It was revealed that autophagy promoted by celastrol could induce the lysosomal degradation of c-MYC, which might be a possible mechanism contributing to the reduction of VSMCs proliferation. The Wnt5a/PKC/mTOR signaling pathway was found to be an underlying mechanism for celastrol to induce autophagy and inhibit the VSMCs proliferation. These observations indicate that celastrol may be a novel drug with a great potential to prevent restenosis.
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MESH Headings
- Animals
- Autophagy/drug effects
- Cells, Cultured
- Disease Models, Animal
- Femoral Artery/injuries
- Humans
- Hyperplasia/metabolism
- Hyperplasia/pathology
- Male
- Mice
- Mice, Inbred C57BL
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Myocytes, Smooth Muscle/cytology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Neointima
- Pentacyclic Triterpenes/pharmacology
- Signal Transduction/drug effects
- TOR Serine-Threonine Kinases/metabolism
- Wnt-5a Protein/metabolism
- Wound Healing/drug effects
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Affiliation(s)
- Ya-Ning Shi
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan, China
- Division of Stem Cell Regulation and Application, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Le-Ping Liu
- Institue of Innovation and Applied Research in Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Chang-Feng Deng
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan, China
- Division of Stem Cell Regulation and Application, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Tan-Jun Zhao
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan, China
- Division of Stem Cell Regulation and Application, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Zhe Shi
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Jian-Ye Yan
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Yong-Zhen Gong
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Duan-Fang Liao
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan, China
- Division of Stem Cell Regulation and Application, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Li Qin
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan, China
- Division of Stem Cell Regulation and Application, Hunan University of Chinese Medicine, Changsha, Hunan, China
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56
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Han F, Pang S, Sun Z, Cui Y, Yan B. Genetic Variants and Functional Analyses of the ATG16L1 Gene Promoter in Acute Myocardial Infarction. Front Genet 2021; 12:591954. [PMID: 34220924 PMCID: PMC8248370 DOI: 10.3389/fgene.2021.591954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 04/23/2021] [Indexed: 01/01/2023] Open
Abstract
Background Acute myocardial infarction (AMI), a common complex disease caused by an interaction between genetic and environmental factors, is a serious type of coronary artery disease and is also a leading cause of death worldwide. Autophagy-related 16-like 1 (ATG16L1) is a key regulatory factor of autophagy and plays an important role in induced autophagy. In the cardiovascular system, autophagy is essential to preserve the homeostasis and function of the heart and blood vessels. No studies have hitherto examined the association between AMI and ATG16L1 gene promoter. Methods We conducted a case-control study, using polymerase chain reaction and sequencing techniques, dual luciferase reporter assay, and electrophoretic mobility shift assay, to analyze genetic and functional variation in the ATG16L1 gene promoter between AMI and controls. A variety of statistical analyses were used to analyze the allele and genotype frequencies and the relationship between single-nucleotide polymorphisms (SNPs) and AMI. Results In all, 10 SNPs and two DNA-sequence variants (DSVs) were identified in 688 subjects, and three ATG16L1 gene promoter mutations [g.233250693 T > C (rs185213911), g.233250946 G > A (rs568956599), g.233251133 C > G (rs1301744254)] that were identified in AMI patients significantly altered the transcriptional activity of ATG16L1 gene promoter in HEH2, HEK-293, and H9c2 cells (P < 0.05). Further electrophoretic mobility shift assays indicated that the SNPs affected the binding of transcription factors (P < 0.01). Conclusion ATG16L1 gene promoter mutations in AMI patients may affect the binding of transcription factors and change the transcriptional activity of the ATG16L1 gene, changing the level of autophagy and contributing to the occurrence and development of AMI as rare and low-frequency risk factors.
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Affiliation(s)
- Falan Han
- Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Shuchao Pang
- Shandong Provincial Key Laboratory of Cardiac Disease Diagnosis and Treatment, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, China
| | - Zhaoqing Sun
- Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Yinghua Cui
- Division of Cardiology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, China
| | - Bo Yan
- Shandong Provincial Key Laboratory of Cardiac Disease Diagnosis and Treatment, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, China.,The Center for Molecular Genetics of Cardiovascular Diseases, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, China.,Shandong Provincial Sino-US Cooperation Research Center for Translational Medicine, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, China
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57
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Guo Z, Yu B, Li X, Yang X, Wang C, Fan L. Circadian misalignment promotes vascular smooth muscle cell apoptosis via defective autophagy. J Mol Histol 2021; 52:799-808. [PMID: 34131827 DOI: 10.1007/s10735-021-10000-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 06/12/2021] [Indexed: 01/28/2023]
Abstract
Defective autophagy in vascular smooth muscle cells (VSMCs) in response to oxidative stress can lead to cellular apoptosis and plaque instability. Previous studies have revealed that the circadian clock system is involved in autophagic regulation and plaque progression. However, the mechanism by which circadian rhythmicity influences VSMC autophagy and plaque stability remains unclear. Our study described the circadian profiles in atheromatous plaques and verified the role of circadian misalignment in VSMC autophagy and apoptosis. We found that the mRNA expression levels of circadian locomotor output cycles protein kaput (CLOCK) and Beclin 1 were significantly decreased in unstable plaques compared with stable plaques. No significant differences were observed in other circadian rhythm genes. VSMCs treated with oxidized low-density lipoprotein (ox-LDL, 80 μg/ml) exhibited abnormal circadian rhythmicity and impaired autophagy, as evidenced by consistent decreases in CLOCK and Beclin 1 expression, suggesting a correlation between CLOCK and autophagy. CLOCK protein expression was inhibited by ox-LDL, accompanied by defective autophagy and an increased apoptosis rates (P < 0.05). Administration of rapamycin (10 nM) reversed the effect of ox-LDL on VSMC autophagy and apoptosis. Finally, CLOCK silencing led to a considerable decrease in autophagy. VSMCs with stable CLOCK silencing also showed an increased apoptosis rate. In addition, gene silencing of CLOCK in VSMCs counteracted the effects of moderate rapamycin concentrations on autophagy and apoptosis. In conclusion, these findings suggested that the CLOCK-dependent rapamycin signaling pathway is a critical mediator in ox-LDL-induced VSMCs with defective autophagy that exacerbates plaque destabilization.
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Affiliation(s)
- Zhenyu Guo
- Department of Vascular Surgery, Qingpu Branch of Zhongshan Hospital, Fudan University, 1158 Park Road, Qingpu, Shanghai, 201700, China
| | - Baixue Yu
- Biomedical Research Centre, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Xu Li
- Department of Vascular Surgery, Qingpu Branch of Zhongshan Hospital, Fudan University, 1158 Park Road, Qingpu, Shanghai, 201700, China
| | - Xiaohu Yang
- Department of Vascular Surgery, Qingpu Branch of Zhongshan Hospital, Fudan University, 1158 Park Road, Qingpu, Shanghai, 201700, China
| | - Chen Wang
- Department of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Longhua Fan
- Department of Vascular Surgery, Qingpu Branch of Zhongshan Hospital, Fudan University, 1158 Park Road, Qingpu, Shanghai, 201700, China. .,Department of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
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58
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Different types of cell death in vascular diseases. Mol Biol Rep 2021; 48:4687-4702. [PMID: 34013393 DOI: 10.1007/s11033-021-06402-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 05/08/2021] [Indexed: 10/21/2022]
Abstract
In a mature organism, tissue homeostasis is regulated by cell division and cell demise as the two major physiological procedures. There is increasing evidence that deregulation of these processes is important in the pathogenicity of main diseases, including myocardial infarction, stroke, atherosclerosis, and inflammatory diseases. Therefore, there are ongoing efforts to discover modulating factors of the cell cycle and cell demise planners aiming at shaping innovative therapeutically modalities to the therapy of such diseases. Although the life of a cell is terminated by several modes of action, a few cell deaths exist-some of which resemble apoptosis and/or necrosis, and most of them are different from one another-that contribute to a wide range of functions to either support or disrupt the homoeostasis. Even in normal physiological conditions, cell life is severe within the cardiovascular system. Cells are persistently undergoing stretch, contraction, injurious metabolic byproducts, and hemodynamic forces, and a few of cells sustain decade-long lifetimes. The duration of vascular disease causes further exposure of vascular cells to a novel range of offences, most of which induce cell death. There is growing evidence on consequences of direct damage to a cell, as well as on responses of adjacent and infiltrating cells, which also have an effect on the pathology. In this study, by focusing on different pathways of cell death in different vascular diseases, an attempt is made to open a new perspective on the therapeutic goals associated with cell death in these diseases.
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59
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Dai J, Zhang Q, Wan C, Liu J, Zhang Q, Yu Y, Wang J. Significances of viable synergistic autophagy-associated cathepsin B and cathepsin D (CTSB/CTSD) as potential biomarkers for sudden cardiac death. BMC Cardiovasc Disord 2021; 21:233. [PMID: 33964876 PMCID: PMC8106142 DOI: 10.1186/s12872-021-02040-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 04/26/2021] [Indexed: 01/06/2023] Open
Abstract
Background The Cathepsins family, including cathepsin B and cathepsin D, potentially affects the entire processes involved in atherosclerosis. Although coronary heart disease (CHD) has been widely studied as the basis of Sudden Cardiac Death (SCD), the relationship between CHD and CTSB/D remains unclear. Methods We screened for differentially expressed proteins (DEPs) associated with autophagy by limma package in R. For the genes corresponding to the DEPs after screening, we used various databases to carry out functional enrichment of related DEGs to explore their possible influence on a specific aspect of the disease. Functional enrichment analysis of DEGs was performed by DAVID, Metascape and GSEA. STRING and Cytoscape were obtained the hub genes, the analysis of interaction networks through the GENMANIA and Networkanalyst. Western Blot was used to validate the protein expression level of target genes. TF and miRNA prediction were performed using Networkanalyst and visualized using Cytoscape. Results The expression levels of members of the cathepsin family were up regulated in CHD tissues compared with the control. GO and KEGG revealed that cathepsin was markedly enriched in endopeptidase activities, immune responses, lysosome pathways, et al. The correlation analysis showed that in patients with CHD, the CTSB/CTSD expression were negatively correlated with ATG4D and BNIP3, but positively with BCL2L1, CAPNS1, and TP53. In the TF-mRNA-miRNA network, has-miR-24-3p and has-miR-128-3p had higher degrees, CTSB/CTSD could be targeted by them. Conclusions Our findings elucidated the expression and regulatory role of cathepsins in coronary heart disease induced SCD and might further explore the potential mechanisms of autophagy in CHD.
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Affiliation(s)
- Jialin Dai
- School of Forensic Medicine, Guizhou Medical University, 4 Beijing Road, Guiyang, 550001, Guizhou, China
| | - Qiong Zhang
- School of Forensic Medicine, Guizhou Medical University, 4 Beijing Road, Guiyang, 550001, Guizhou, China
| | - Changwu Wan
- School of Forensic Medicine, Guizhou Medical University, 4 Beijing Road, Guiyang, 550001, Guizhou, China
| | - Jiangjin Liu
- School of Forensic Medicine, Guizhou Medical University, 4 Beijing Road, Guiyang, 550001, Guizhou, China
| | - Qiaojun Zhang
- School of Forensic Medicine, Guizhou Medical University, 4 Beijing Road, Guiyang, 550001, Guizhou, China
| | - Yanni Yu
- School of Forensic Medicine, Guizhou Medical University, 4 Beijing Road, Guiyang, 550001, Guizhou, China.
| | - Jie Wang
- School of Forensic Medicine, Guizhou Medical University, 4 Beijing Road, Guiyang, 550001, Guizhou, China.
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Abstract
Dynamic remodeling of the actin cytoskeleton is an essential feature for virtually all actin-dependent cellular processes, including cell migration, cell cycle progression, chromatin remodeling and gene expression, and even the DNA damage response. An altered actin cytoskeleton is a structural hallmark associated with numerous pathologies ranging from cardiovascular diseases to immune disorders, neurological diseases and cancer. The actin cytoskeleton in cells is regulated through the orchestrated actions of a myriad of actin-binding proteins. In this Review, we provide a brief overview of the structure and functions of the actin-monomer-binding protein profilin-1 (Pfn1) and then discuss how dysregulated expression of Pfn1 contributes to diseases associated with the cardiovascular system.
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Affiliation(s)
| | - David Gau
- Bioengineering, University of Pittsburgh
| | - Partha Roy
- Bioengineering, University of Pittsburgh.,Pathology, University of Pittsburgh, 306 Center for Bioengineering, University of Pittsburgh, 300 Technology Drive, Pittsburgh, PA 15219, USA
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Gatica D, Chiong M, Lavandero S, Klionsky DJ. The role of autophagy in cardiovascular pathology. Cardiovasc Res 2021; 118:934-950. [PMID: 33956077 DOI: 10.1093/cvr/cvab158] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 04/30/2021] [Indexed: 12/11/2022] Open
Abstract
Macroautophagy/autophagy is a conserved catabolic recycling pathway in which cytoplasmic components are sequestered, degraded, and recycled to survive various stress conditions. Autophagy dysregulation has been observed and linked with the development and progression of several pathologies, including cardiovascular diseases, the leading cause of death in the developed world. In this review, we aim to provide a broad understanding of the different molecular factors that govern autophagy regulation and how these mechanisms are involved in the development of specific cardiovascular pathologies, including ischemic and reperfusion injury, myocardial infarction, cardiac hypertrophy, cardiac remodeling, and heart failure.
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Affiliation(s)
- Damián Gatica
- Life Sciences Institute and Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Mario Chiong
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, Santiago 8380492, Chile
| | - Sergio Lavandero
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, Santiago 8380492, Chile.,Corporación Centro de Estudios Científicos de las Enfermedades Crónicas (CECEC), Santiago 7860201, Chile.,Department of Internal Medicine (Cardiology Division), University of Texas Southwestern Medical Center, Dallas, TX 75390-8573, USA
| | - Daniel J Klionsky
- Life Sciences Institute and Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
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62
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Xu J, Kitada M, Ogura Y, Koya D. Relationship Between Autophagy and Metabolic Syndrome Characteristics in the Pathogenesis of Atherosclerosis. Front Cell Dev Biol 2021; 9:641852. [PMID: 33937238 PMCID: PMC8083902 DOI: 10.3389/fcell.2021.641852] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/19/2021] [Indexed: 12/11/2022] Open
Abstract
Atherosclerosis is the main cause of mortality in metabolic-related diseases, including cardiovascular disease and type 2 diabetes (T2DM). Atherosclerosis is characterized by lipid accumulation and increased inflammatory cytokines in the vascular wall, endothelial cell and vascular smooth muscle cell dysfunction and foam cell formation initiated by monocytes/macrophages. The characteristics of metabolic syndrome (MetS), including obesity, glucose intolerance, dyslipidemia and hypertension, may activate multiple mechanisms, such as insulin resistance, oxidative stress and inflammatory pathways, thereby contributing to increased risks of developing atherosclerosis and T2DM. Autophagy is a lysosomal degradation process that plays an important role in maintaining cellular metabolic homeostasis. Increasing evidence indicates that impaired autophagy induced by MetS is related to oxidative stress, inflammation, and foam cell formation, further promoting atherosclerosis. Basal and mild adaptive autophagy protect against the progression of atherosclerotic plaques, while excessive autophagy activation leads to cell death, plaque instability or even plaque rupture. Therefore, autophagic homeostasis is essential for the development and outcome of atherosclerosis. Here, we discuss the potential role of autophagy and metabolic syndrome in the pathophysiologic mechanisms of atherosclerosis and potential therapeutic drugs that target these molecular mechanisms.
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Affiliation(s)
- Jing Xu
- Department of Diabetology and Endocrinology, Kanazawa Medical University, Uchinada, Japan.,Department of Endocrinology and Metabolism, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Munehiro Kitada
- Department of Diabetology and Endocrinology, Kanazawa Medical University, Uchinada, Japan.,Division of Anticipatory Molecular Food Science and Technology, Medical Research Institute, Kanazawa Medical University, Uchinada, Japan
| | - Yoshio Ogura
- Department of Diabetology and Endocrinology, Kanazawa Medical University, Uchinada, Japan
| | - Daisuke Koya
- Department of Diabetology and Endocrinology, Kanazawa Medical University, Uchinada, Japan.,Division of Anticipatory Molecular Food Science and Technology, Medical Research Institute, Kanazawa Medical University, Uchinada, Japan
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Smooth muscle-specific HuR knockout induces defective autophagy and atherosclerosis. Cell Death Dis 2021; 12:385. [PMID: 33837179 PMCID: PMC8035143 DOI: 10.1038/s41419-021-03671-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 03/19/2021] [Accepted: 03/23/2021] [Indexed: 01/19/2023]
Abstract
Human antigen R (HuR) is a widespread RNA-binding protein involved in homeostatic regulation and pathological processes in many diseases. Atherosclerosis is the leading cause of cardiovascular disease and acute cardiovascular events. However, the role of HuR in atherosclerosis remains unknown. In this study, mice with smooth muscle-specific HuR knockout (HuRSMKO) were generated to investigate the role of HuR in atherosclerosis. HuR expression was reduced in atherosclerotic plaques. As compared with controls, HuRSMKO mice showed increased plaque burden in the atherosclerotic model. Mechanically, HuR could bind to the mRNAs of adenosine 5′-monophosphate-activated protein kinase (AMPK) α1 and AMPKα2, thus increasing their stability and translation. HuR deficiency reduced p-AMPK and LC3II levels and increased p62 level, thereby resulting in defective autophagy. Finally, pharmacological AMPK activation induced autophagy and suppressed atherosclerosis in HuRSMKO mice. Our findings suggest that smooth muscle HuR has a protective effect against atherosclerosis by increasing AMPK-mediated autophagy.
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Wendt TS, Li YJ, Gonzales RJ. Ozanimod, an S1PR 1 ligand, attenuates hypoxia plus glucose deprivation-induced autophagic flux and phenotypic switching in human brain VSM cells. Am J Physiol Cell Physiol 2021; 320:C1055-C1073. [PMID: 33788630 DOI: 10.1152/ajpcell.00044.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Vascular smooth muscle (VSM) cell phenotypic expression and autophagic state are dynamic responses to stress. Vascular pathologies, such as hypoxemia and ischemic injury, induce a synthetic VSM phenotype and autophagic flux resulting in a loss of vascular integrity and VSM cell death respectfully. Both clinical pilot and experimental stroke studies demonstrate that sphingosine-1-phosphate receptor (S1PR) modulation improves stroke outcome; however, specific mechanisms associated with a beneficial outcome at the level of the cerebrovasculature have not been clearly elucidated. We hypothesized that ozanimod, a selective S1PR type 1 ligand, will attenuate VSM synthetic phenotypic expression and autophagic flux in primary human brain VSM cells following acute hypoxia plus glucose deprivation (HGD; in vitro ischemic-like injury) exposure. Cells were treated with ozanimod and exposed to normoxia or HGD. Crystal violet staining, standard immunoblotting, and immunocytochemical labeling techniques assessed cellular morphology, vacuolization, phenotype, and autophagic state. We observed that HGD temporally decreased VSM cell viability and concomitantly increased vacuolization, both of which ozanimod reversed. HGD induced a simultaneous elevation and reduction in levels of pro- and antiautophagic proteins respectfully, and ozanimod attenuated this response. Protein levels of VSM phenotypic biomarkers, smoothelin and SM22, were decreased following HGD. Furthermore, we observed an HGD-induced epithelioid and synthetic morphological appearance accompanied by disorganized cytoskeletal filaments, which was rescued by ozanimod. Thus, we conclude that ozanimod, a selective S1PR1 ligand, protects against acute HGD-induced phenotypic switching and promotes cell survival, in part, by attenuating HGD-induced autophagic flux thus improving vascular patency in response to acute ischemia-like injury.
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Affiliation(s)
- Trevor S Wendt
- Department of Basic Medical Sciences, University of Arizona College of Medicine, Phoenix, Arizona
| | - Yu Jing Li
- Department of Basic Medical Sciences, University of Arizona College of Medicine, Phoenix, Arizona
| | - Rayna J Gonzales
- Department of Basic Medical Sciences, University of Arizona College of Medicine, Phoenix, Arizona
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Zhu Y, You J, Xu C, Gu X. Predictive value of carotid artery ultrasonography for the risk of coronary artery disease. JOURNAL OF CLINICAL ULTRASOUND : JCU 2021; 49:218-226. [PMID: 33051899 DOI: 10.1002/jcu.22932] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 09/12/2020] [Accepted: 09/15/2020] [Indexed: 06/11/2023]
Abstract
PURPOSE To assess carotid intima-media thickness (IMT), carotid plaques, and cardiovascular risk factors in patients with suspected coronary artery disease (CHD) to determine their association and predictive value for CHD. METHODS We performed duplex Doppler ultrasonography of the carotid arteries and coronary angiography or CT in 480 patients with suspected CHD, and investigated their personal and medical histories. Patients were then assigned to the CHD or the control group depending on the presence of coronary lesions. Ultrasonography was performed the morning after admission prior to any treatment, coronary angiography, or CT. RESULTS Carotid plaques were mainly distributed in the common carotid artery bifurcation, with a significant difference between the CHD and control groups. Plaque incidence (80%) and IMT were significantly higher (P < .001 and P = .012, respectively) in the CHD (80% and 0.84 ± 0.21 mm) than in the control group (49% and 0.76 ± 0.18 mm). The factors significantly associated with CHD were introduced into a multivariate regression model. Male subject (OR = 1.569, 95%CI 1.004-2.453; P = .048) and plaque burden (OR = 0.457, 95%CI 0.210-0.993; P = .048) were significant predictors for CHD occurrence. The presence of carotid plaques performed significantly better than IMT and the Framingham risk score for predicting CHD lesions (P < .001 for both). CONCLUSIONS CHD patients showed higher percentage of clinical (plaques) or subclinical (IMT) carotid artery wall change, and the presence of carotid plaques showed better predictive value than IMT and Framingham risk score for the presence of coronary artery lesions.
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Affiliation(s)
- Ye Zhu
- Clinical Medical College, Yangzhou University, Yangzhou, China
- Department of Cardiology, Northern Jiangsu People's Hospital, Yangzhou, China
| | - Jia You
- Department of Internal Medicine, Yangzhou Maternal and Child Health Care Hospital, Yangzhou, Jiangsu, China
| | - Chao Xu
- Department of Biostatistics and Epidemiology, University of Oklahoma Health Science Center, Oklahoma City, Oklahoma, USA
| | - Xiang Gu
- Clinical Medical College, Yangzhou University, Yangzhou, China
- Department of Cardiology, Northern Jiangsu People's Hospital, Yangzhou, China
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Autophagy and Mitophagy as Essential Components of Atherosclerosis. Cells 2021; 10:cells10020443. [PMID: 33669743 PMCID: PMC7922388 DOI: 10.3390/cells10020443] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/12/2021] [Accepted: 02/16/2021] [Indexed: 12/23/2022] Open
Abstract
Cardiovascular disease (CVD) is one of the greatest health problems affecting people worldwide. Atherosclerosis, in turn, is one of the most common causes of cardiovascular disease. Due to the high mortality rate from cardiovascular diseases, prevention and treatment at the earliest stages become especially important. This requires developing a deep understanding of the mechanisms underlying the development of atherosclerosis. It is well-known that atherogenesis is a complex multi-component process that includes lipid metabolism disorders, inflammation, oxidative stress, autophagy disorders and mitochondrial dysfunction. Autophagy is a cellular control mechanism that is critical to maintaining health and survival. One of the specific forms of autophagy is mitophagy, which aims to control and remove defective mitochondria from the cell. Particularly defective mitophagy has been shown to be associated with atherogenesis. In this review, we consider the role of autophagy, focusing on a special type of it—mitophagy—in the context of its role in the development of atherosclerosis.
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Xing SS, Yang J, Li WJ, Li J, Chen L, Yang YT, Lei X, Li J, Wang K, Liu X. Salidroside Decreases Atherosclerosis Plaque Formation via Inhibiting Endothelial Cell Pyroptosis. Inflammation 2021; 43:433-440. [PMID: 32076940 DOI: 10.1007/s10753-019-01106-x] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Pyroptosis, a new pro-inflammatory programmed cell death, is linked to atherosclerosis (AS). Our previous studies suggested that salidroside (SAL) can alleviate AS and exert anti-oxidative and anti-inflammatory properties. However, the effect of SAL on atherosclerosis-related pyroptosis has not been studied. Here, we investigated the effect of SAL on pyroptosis to explain the underlying mechanisms of SAL on atherosclerosis-related inflammation. We established an atherosclerosis mouse model via western diet (HFD) to explore the protective effect of SAL. According to our results, administration of SAL for 12 weeks markedly reduced the atherosclerotic plaque in aorta. Meanwhile, SAL also alleviated the pyroptosis, as evidenced by inhibiting caspase-1 activation, interleukin-1β (IL-1β) release, and TUNEL-positive staining, and decreasing the expression of Gasdermin D (GSDMD). Furthermore, SAL also decreased the activation of caspase-1 and inhibited the release of IL-1β induced by lipopolysaccharide (LPS) and adenosine triphosphate (ATP) in human umbilical vein endothelial cell (HUVECs). Our data indicate that SAL inhibit NLRP3-related pyroptosis, which might be the underlying mechanism of SAL anti-inflammatory in atherosclerosis.
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Affiliation(s)
- Sha-Sha Xing
- Clinical Drug Trial Institution, Affiliated Hospital of Chengdu University, Chengdu, 610081, Sichuan, People's Republic of China
| | - Jin Yang
- Department of Urology, Affiliated Hospital of Chengdu University, Chengdu, 610081, Sichuan, People's Republic of China.
| | - Wen-Jing Li
- Department of Pharmacy, Zhongnan Hospital of Wuhan University, Wuhan, 430071, People's Republic of China
| | - Jian Li
- Department of Basic Medicine, Chengdu University School of Medicine, Chengdu, 610106, Sichuan, People's Republic of China
| | - Lin Chen
- Department of Urology, Affiliated Hospital of Chengdu University, Chengdu, 610081, Sichuan, People's Republic of China
| | - Yu-Ting Yang
- Clinical Drug Trial Institution, Affiliated Hospital of Chengdu University, Chengdu, 610081, Sichuan, People's Republic of China
| | - Xia Lei
- Clinical Drug Trial Institution, Affiliated Hospital of Chengdu University, Chengdu, 610081, Sichuan, People's Republic of China
| | - Jun Li
- Department of General Surgery, Affiliated Hospital of Chengdu University, Chengdu University, Chengdu, 610081, Sichuan, People's Republic of China
| | - Kai Wang
- Department of Urology, Affiliated Hospital of Chengdu University, Chengdu, 610081, Sichuan, People's Republic of China
| | - Xun Liu
- Department of Urology, Affiliated Hospital of Chengdu University, Chengdu, 610081, Sichuan, People's Republic of China
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Autophagy blockage promotes the pyroptosis of ox-LDL-treated macrophages by modulating the p62/Nrf2/ARE axis. J Physiol Biochem 2021; 77:419-429. [PMID: 33886081 PMCID: PMC8060691 DOI: 10.1007/s13105-021-00811-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 03/29/2021] [Indexed: 01/06/2023]
Abstract
Atherosclerosis, a chronic comprehensive cardiovascular disease, is characterized by the lipid infiltration, formation of foam cells derived from macrophages and inflammation in the vessel wall. Substantial evidence confirms that the activity of autophagic bodies plays a pivot role in regulating cell deaths, but the mechanisms of autophagy to regulate the pyroptosis of macrophages in atherosclerosis remain unclear. In our study, we explored that ox-LDL decreased the cell viability and destroyed the integrity of cell membrane, resulting in the pyroptosis of THP-1 derived macrophages in a dose-dependent manner. Western blotting, qRT-PCR and ELISA also showed that chloroquine (CQ) could up-regulate the expression of p62 through impairing autophagy and induce the pyroptosis of macrophages treated by ox-LDL, as evidenced by the decrease of cell viability and membrane integrity, and the increase of pro-caspase-1, GSDMD, and proinflammatory factors IL-1β and IL-18. Further researches demonstrated that Nrf2, a nuclear factor activated by p62, was linked to macrophage pyroptosis. Overactivating or suppressing Nrf2/ARE signaling would correspondingly aggravate or alleviate pyroptosis, in which the level of p62 was regulated by Nrf2 feedback. Then, bioinformatic analysis verified that there was a close interaction between p62, Nrf2/ARE signaling proteins and pyroptosis-related proteins. Taken together, our results show that blocking autophagy promotes the pyroptosis of ox-LDL-treated macrophages via the p62/Nrf2/ARE axis, providing a novel therapeutic target for atherosclerosis.
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Li M, Qi L, Li Y, Zhang S, Lin L, Zhou L, Han W, Qu X, Cai J, Ye M, Shi K. Association of Pericardiac Adipose Tissue With Coronary Artery Disease. Front Endocrinol (Lausanne) 2021; 12:724859. [PMID: 34552562 PMCID: PMC8451419 DOI: 10.3389/fendo.2021.724859] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 08/03/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND AND AIM Coronary artery disease (CAD) poses a worldwide health threat. Compelling evidence shows that pericardial adipose tissue (PAT), a brown-like adipose adjacent to the external surface of the pericardium, is associated with CAD. However, the specific molecular mechanisms of PAT in CAD are elusive. This study aims to characterize human PAT and explore its association with CAD. METHODS We acquired samples of PAT from 31 elective cardiac surgery patients (17 CAD patients and 14 controls). The transcriptome characteristics were assessed in 5 CAD patients and 4 controls via RNA-sequencing. Cluster profile R package, String database, Cytoscape were applied to analyze the potential pathways and PPI-network key to DEGS, whereas the hubgenes were predicted via Metascape, Cytohubba, and MCODE. We use Cibersort, ENCORI, and DGIDB to predict immunoinfiltration, mRNA-miRNA target gene network, and search potential drugs targeting key DEGs. The predictable hubgenes and infiltrating inflammatory cells were validated in 22 patients (12 CAD samples and 10 control samples) through RT-qPCR and immunohistochemistry. RESULTS A total of 147 different genes (104 up-regulated genes and 43 down-regulated genes) were identified in CAD patients. These different genes were associated with immunity and inflammatory dysfunction. Cibersort analysis showed monocytes and macrophages were the most common subsets in immune cells, whereas immunohistochemical results revealed there were more macrophages and higher proportion of M1 subtype cells in PAT of CAD patients. The PPI network and module analysis uncovered several crucial genes, defined as candidate genes, including Jun, ATF3, CXCR4, FOSB, CCl4, which were validated through RT-qPCR. The miRNA-mRNA network implicated hsa-miR-185-5p as diagnostic targets and drug-gene network showed colchicine, fenofibrate as potential therapeutic drugs, respectively. CONCLUSION This study demonstrates that PAT is mainly associated with the occurrence of CAD following the dysfunction of immune and inflammatory processes. The identified hubgenes, predicted drugs and miRNAs are promising biomarkers and therapeutic targets for CAD.
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Affiliation(s)
- Mingxuan Li
- Department of Cardiology, Huadong Hospital Affiliated to Fudan University, Shanghai, China
| | - Lin Qi
- Department of Computed Tomography, Huadong Hospital Affiliated to Fudan University, Shanghai, China
| | - Yanglei Li
- Department of Cardiology, Huadong Hospital Affiliated to Fudan University, Shanghai, China
| | - Shuyi Zhang
- Department of Cardiology, Huadong Hospital Affiliated to Fudan University, Shanghai, China
| | - Lei Lin
- Department of Cardiovascular Surgery, Huadong Hospital Affiliated to Fudan University, Shanghai, China
| | - Lijin Zhou
- Department of Cardiovascular Surgery, Huadong Hospital Affiliated to Fudan University, Shanghai, China
| | - Wanlin Han
- Department of Cardiology, Huadong Hospital Affiliated to Fudan University, Shanghai, China
| | - Xinkai Qu
- Department of Cardiology, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- *Correspondence: Kailei Shi, ; Maoqing Ye, ; Junfeng Cai, ; Xinkai Qu,
| | - Junfeng Cai
- Department of Cardiovascular Surgery, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- *Correspondence: Kailei Shi, ; Maoqing Ye, ; Junfeng Cai, ; Xinkai Qu,
| | - Maoqing Ye
- Department of Cardiology, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- *Correspondence: Kailei Shi, ; Maoqing Ye, ; Junfeng Cai, ; Xinkai Qu,
| | - Kailei Shi
- Department of Cardiology, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- *Correspondence: Kailei Shi, ; Maoqing Ye, ; Junfeng Cai, ; Xinkai Qu,
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Sun P, Jin J, Wang L, Wang J, Zhou H, Zhang Q, Xu X. Porcine epidemic diarrhea virus infections induce autophagy in Vero cells via ROS-dependent endoplasmic reticulum stress through PERK and IRE1 pathways. Vet Microbiol 2020; 253:108959. [PMID: 33360915 DOI: 10.1016/j.vetmic.2020.108959] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 12/13/2020] [Indexed: 12/12/2022]
Abstract
Porcine epidemic diarrhea virus (PEDV), the causative agent of PED, belongs to the genus Alphacoronavirus in the family Coronaviridae. Reactive oxygen species (ROS), endoplasmic reticulum (ER) stress, and autophagy play crucial roles in regulating a variety of cellular processes during viral infection. However, the precise role of autophagy in PEDV-infected Vero cells remains largely elusive. To elucidate how PEDV infection induces autophagy, this study ascertained whether ER stress was present in PEDV-infected Vero cells. The results showed PEDV infection significantly increased the expression of GRP78 and LC3Ⅱ. Treatment with the ER stress inhibitor 4-phenylbutyrate (4-PBA) could significantly inhibit PEDV-induced autophagy. Antioxidants, such as N-acetylcysteine (NAC), could significantly inhibit PEDV-induced ER stress and autophagy, indicating that ROS act as an upstream regulator of ER stress-mediated autophagy. Further research found that activation of ER stress triggered the unfolded protein response (UPR) through PERK, IRE1, and ATF6 pathways during PEDV infection. However, treatment with the PERK inhibitor GSK2606414, IRE1 inhibitor STF-083010 but not ATF6 inhibitor AEBSF reversed PEDV-induced autophagy. Taken together, the results of this study showed that accumulated ROS played an essential role in regulating ER stress-mediated autophagy during PEDV infection. We also found that PERK and IER1 pathways of UPR signalling were involved in PEDV-induced autophagy. Furthermore, PEDV induced autophagy to promote viral replication via PERK and IER1 pathways in Vero cells. These results provide the mechanism of PEDV-induced ROS-dependent ER stress-mediated autophagy in Vero cells through activating PERK and IRE1 pathways.
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Affiliation(s)
- Pei Sun
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui, 230036, China
| | - Jian Jin
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui, 230036, China
| | - Lixiang Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Jingjing Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Hongchao Zhou
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Qi Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China.
| | - Xingang Xu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China.
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Tyrrell DJ, Blin MG, Song J, Wood SC, Goldstein DR. Aging Impairs Mitochondrial Function and Mitophagy and Elevates Interleukin 6 Within the Cerebral Vasculature. J Am Heart Assoc 2020; 9:e017820. [PMID: 33225820 PMCID: PMC7763766 DOI: 10.1161/jaha.120.017820] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 10/22/2020] [Indexed: 01/26/2023]
Abstract
Background The blood-brain barrier (BBB) is critical for cerebrovascular health. Although aging impairs the integrity of the BBB, the mechanisms behind this phenomenon are not clear. As mitochondrial components activate inflammation as mitochondria become dysfunctional, we examined how aging impacts cerebrovascular mitochondrial function, mitophagy, and inflammatory signaling; and whether any alterations correlate with BBB function. Methods and Results We isolated cerebral vessels from young (2-3 months of age) and aged (18-19 months of age) mice and found that aging led to increases in the cyclin-dependent kinase inhibitor 1 senescence marker with impaired mitochondrial function, which correlated with aged mice exhibiting increased BBB leak compared with young mice. Cerebral vessels also exhibited increased expression of mitophagy proteins Parkin and Nix with aging. Using mitophagy reporter (mtKeima) mice, we found that the capacity to increase mitophagy from baseline within the cerebral vessels on rotenone treatment was reduced with aging. Aging within the cerebral vessels also led to the upregulation of the stimulator of interferon genes and increased interleukin 6 (IL-6), a cytokine that alters mitochondrial function. Importantly, exogenous IL-6 treatment of young cerebral vessels upregulated mitophagy and Parkin and impaired mitochondrial function; whereas inhibiting IL-6 in aged cerebral vessels reduced Parkin expression and increased mitochondrial function. Furthermore, treating cerebral vessels of young mice with mitochondrial N-formyl peptides upregulated IL-6, increased Parkin, and reduced Claudin-5, a tight junction protein integral to BBB integrity. Conclusions Aging alters the cerebral vasculature to impair mitochondrial function and mitophagy and increase IL-6 levels. These alterations may impair BBB integrity and potentially reduce cerebrovascular health with aging.
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Affiliation(s)
| | - Muriel G. Blin
- Department of Internal MedicineUniversity of MichiganAnn ArborMI
| | - Jianrui Song
- Department of Internal MedicineUniversity of MichiganAnn ArborMI
| | - Sherri C. Wood
- Department of Internal MedicineUniversity of MichiganAnn ArborMI
| | - Daniel R. Goldstein
- Department of Internal MedicineUniversity of MichiganAnn ArborMI
- Department of Microbiology and ImmunologyUniversity of MichiganAnn ArborMI
- Institute of GerontologyUniversity of MichiganAnn ArborMI
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Ren K, Xu XD, Yu XH, Li MQ, Shi MW, Liu QX, Jiang T, Zheng XL, Yin K, Zhao GJ. LncRNA-modulated autophagy in plaque cells: a new paradigm of gene regulation in atherosclerosis? Aging (Albany NY) 2020; 12:22335-22349. [PMID: 33154191 PMCID: PMC7695379 DOI: 10.18632/aging.103786] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/14/2020] [Indexed: 12/25/2022]
Abstract
The development of atherosclerosis is accompanied by the functional deterioration of plaque cells, which leads to the escalation of endothelial inflammation, abnormal vascular smooth muscle cell phenotype switching and the accumulation of lipid-laden macrophages within vascular walls. Autophagy, a highly conserved homeostatic mechanism, is critical for the delivery of cytoplasmic substrates to lysosomes for degradation. Moderate levels of autophagy prevent atherosclerosis by safeguarding plaque cells against apoptosis, preventing inflammation, and limiting the lipid burden, whereas excessive autophagy exacerbates cell damage and inflammation and thereby accelerates the formation of atherosclerotic plaques. Increasing lines of evidence suggest that long noncoding RNAs can be either beneficial or detrimental to atherosclerosis development by regulating the autophagy level. This review summarizes the research progress related to 1) the significant role of autophagy in atherosclerosis and 2) the effects of the lncRNA-mediated modulation of autophagy on the plaque cell fate, inflammation levels, proliferative capacity, and cholesterol metabolism and subsequently on atherogenesis.
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Affiliation(s)
- Kun Ren
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan City People’s Hospital, Qingyuan, Guangdong, China.,Department of Pathophysiology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
| | - Xiao-Dan Xu
- Department of Pathology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Xiao-Hai Yu
- Department of Pathophysiology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
| | - Meng-Qi Li
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan City People’s Hospital, Qingyuan, Guangdong, China
| | - Meng-Wen Shi
- Department of Pathophysiology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
| | - Qi-Xian Liu
- Department of Pathophysiology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
| | - Ting Jiang
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan City People’s Hospital, Qingyuan, Guangdong, China
| | - Xi-Long Zheng
- Department of Biochemistry and Molecular Biology, Libin Cardiovascular Institute of Alberta, University of Calgary, Health Sciences Center, Calgary, AB, Canada.,Key Laboratory of Molecular Targets and Clinical Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Kai Yin
- The Second Affiliated Hospital of Guilin Medical University, Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin, China
| | - Guo-Jun Zhao
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan City People’s Hospital, Qingyuan, Guangdong, China
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Artemisinin Attenuated Atherosclerosis in High-Fat Diet-Fed ApoE-/- Mice by Promoting Macrophage Autophagy Through the AMPK/mTOR/ULK1 Pathway. J Cardiovasc Pharmacol 2020; 75:321-332. [PMID: 31895870 DOI: 10.1097/fjc.0000000000000794] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Artemisinin is an endoperoxide sesquiterpene lactone from Artemisia annua L with multiple beneficial effects, including anti-inflammation, antioxidant, and vascular protection. Recent studies have found that inflammation along with autophagy deficiency in macrophages is the possible reason for foam cell accumulation in the intima, which leads to atherosclerotic plaque formation. The primary aims of this study were to explore the inhibiting effect of artemisinin on atherosclerosis in high-fat diet-fed ApoE mice and investigate the probable mechanism. Artemisinin (50 and 100 mg/kg, intragastric administration) treatment effectively inhibited foamy macrophage transformation and decreased atherosclerotic plaque formation in atherosclerotic mice. Moreover, artemisinin promoted AMP-activated protein kinase (AMPK) activation, inhibited mammalian target of rapamycin (mTOR) and uncoordinated-51-like kinase 1 (ULK1) phosphorylation, and increased LC-3II accumulation and P62 degradation, thereby enhancing macrophage autophagy. Besides, the inhibiting effect of artemisinin on mTOR and ULK1 phosphorylation could be abrogated by AMPK knockdown, suggesting AMPK was the essential target of artemisinin on promoting macrophage autophagy. Our study indicated that artemisinin alleviated atherosclerotic lesions by accelerating macrophage autophagy through the AMPK/mTOR/ULK1 pathway.
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Shan R, Liu N, Yan Y, Liu B. Apoptosis, autophagy and atherosclerosis: Relationships and the role of Hsp27. Pharmacol Res 2020; 166:105169. [PMID: 33053445 DOI: 10.1016/j.phrs.2020.105169] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 08/16/2020] [Accepted: 08/18/2020] [Indexed: 02/07/2023]
Abstract
Atherosclerosis is a multifactorial chronic inflammatory disease of the arterial wall, and an important pathological basis of coronary heart disease. Endothelial cells, vascular smooth muscle cells, and macrophages play important roles in the development of atherosclerosis. Of note, apoptosis and autophagy, two types of programmed cell death, influence the development and progression of atherosclerosis via the modulation of such cells. The small heat shock protein Hsp27 is a multifunctional protein induced by various stress factors and has a protective effect on cells. A large number of studies have demonstrated that Hsp27 plays an important role in regulating apoptosis. Recently, some studies have suggested that Hsp27 also participates in the autophagic process. Moreover, Hsp27 is closely related to the occurrence and development of atherosclerosis. Here, we summarize the molecular mechanisms of apoptosis and autophagy and discuss their effects on endothelial cells, vascular smooth muscle cells, and macrophages in the context of atherosclerotic procession. We further explore the involvement of Hsp27 in apoptosis, autophagy, and atherosclerosis. We speculate that Hsp27 may exert its anti-atherosclerotic role via the regulation of apoptosis and autophagy; this may provide the basis for the development of new approaches for the prevention and treatment of atherosclerosis.
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Affiliation(s)
- Ruiting Shan
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, 130041, China
| | - Ning Liu
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, 130041, China
| | - Youyou Yan
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, 130041, China
| | - Bin Liu
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, 130041, China.
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Xiao J, Lu Y, Yang X. THRIL mediates endothelial progenitor cells autophagy via AKT pathway and FUS. Mol Med 2020; 26:86. [PMID: 32907536 PMCID: PMC7488174 DOI: 10.1186/s10020-020-00201-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 07/16/2020] [Indexed: 01/25/2023] Open
Abstract
Background This study focused on the roles of lncRNA THRIL in coronary atherosclerotic heart disease (CAD) through regulating AKT signaling pathway and directly interacting with FUS. Methods QRT-PCR was conducted to detect the expression of THRIL in CAD blood samples and endothelial progenitor cells (EPCs). Cell autophagy of EPCs was examined through Cyto-ID Autophagy Detection Kit. CCK-8 assay and flow cytometry were carried out to assess cell viability and apoptosis under various interference conditions. Western blotting was conducted to detect the expression of interest proteins. The expression levels of vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) were measured by qRT-PCR. The direct interactions between HCG18 and FUS was confirmed through RNA electrophoretic mobility shift assay (RNA EMSA) and RNA immunoprecipitation (RIP) assay. Results THRIL was upregulated in CAD blood samples and EPCs. Knockdown of THRIL in EPCs promoted cell viability, inhibited cell autophagy and further suppressed the development of CAD. Over-expression of THRIL induced inactivation of AKT pathway, while knockdown of THRIL played reversed effects. THRIL directly interacted with FUS protein and knockdown of FUS reversed the over-expressing effect of THRIL on cell proliferation, autophagy and the status of AKT pathway. Conclusion THRIL inhibits the proliferation and mediates autophagy of endothelial progenitor cells via AKT pathway and FUS.
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Affiliation(s)
- Jiandong Xiao
- Department of Cardiology, Beijing Chaoyang Hospital, Capital Medical University, No.8 Gongren Tiyuchang Nanlu, Chaoyang District, Beijing, 100020, China.,Department of Cardiology, Hengshui People's Hospital, Hengshui, 053400, Hebei Province, China
| | - Yuli Lu
- Department of Endocrine, Hengshui People's Hospital, Hengshui, 053400, Hebei Province, China
| | - Xinchun Yang
- Department of Cardiology, Beijing Chaoyang Hospital, Capital Medical University, No.8 Gongren Tiyuchang Nanlu, Chaoyang District, Beijing, 100020, China.
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76
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Insulin-Like Growth Factor I Prevents Cellular Aging via Activation of Mitophagy. J Aging Res 2020; 2020:4939310. [PMID: 32802505 PMCID: PMC7416301 DOI: 10.1155/2020/4939310] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 05/22/2020] [Accepted: 07/06/2020] [Indexed: 12/18/2022] Open
Abstract
Mitochondrial dysfunction is a hallmark of cellular aging. Mitophagy is a critical mitochondrial quality control mechanism that removes dysfunctional mitochondria and contributes to cell survival. Insulin-like growth factor 1 (IGF-1) promotes survival of smooth muscle cells (SMCs), but its potential effect on cellular aging is unknown yet. We found that IGF-1 decreased cell senescence, prevented DNA telomere shortening, increased mitochondrial membrane potential, activated cytochrome C oxidase, and reduced mitochondrial DNA damage in long-term cultured (aged) aortic SMC, suggesting an antiaging effect. IGF-1 increased mitophagy in aged cells, and this was associated with decreased expression of cyclin-dependent kinase inhibitors p16 and p21 and elevated levels of Nrf2 and Sirt3, regulators of mitophagy and mitochondrial biogenesis. SiRNA-induced inhibition of either Nrf2 or Sirt3 blocked IGF-1-induced upregulation of mitophagy, suggesting that the Nrf2/Sirt3 pathway was required for IGF-1's effect on mitophagy. PINK1 is a master regulator of mitophagy. PINK1 silencing suppressed mitophagy and inhibited IGF-1-induced antiaging effects in aged SMC, consistent with an essential role of mitophagy in IGF-1's effect on cellular aging. Thus, IGF-1 inhibited cellular aging via Nrf2/Sirt3-dependent activation of mitophagy. Our data suggest that activation of IGF-1 signaling is a novel potential strategy to activate mitophagy and slow cellular aging.
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Qin Y, Zheng B, Yang GS, Yang HJ, Zhou J, Yang Z, Zhang XH, Zhao HY, Shi JH, Wen JK. Salvia miltiorrhiza-Derived Sal-miR-58 Induces Autophagy and Attenuates Inflammation in Vascular Smooth Muscle Cells. MOLECULAR THERAPY-NUCLEIC ACIDS 2020; 21:492-511. [PMID: 32679544 PMCID: PMC7360890 DOI: 10.1016/j.omtn.2020.06.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 06/15/2020] [Accepted: 06/18/2020] [Indexed: 12/15/2022]
Abstract
Autophagy is associated with the cytoprotection of physiological processes against inflammation and oxidative stress. Salvia miltiorrhiza possesses cardiovascular protective actions and has powerful anti-oxidative and anti-inflammatory effects; however, whether and how Salvia miltiorrhiza-derived microRNAs (miRNAs) protect vascular smooth muscle cells (VSMCs) by inducing autophagy across species are unknown. We first screened and identified Sal-miR-58 from Salvia miltiorrhiza as a natural autophagy inducer. Synthetic Sal-miR-58 suppresses chronic angiotensin II (Ang II) infusion-induced abdominal aortic aneurysm (AAA) formation in mice, as well as induces autophagy in VSMCs and attenuates the inflammatory response elicited by Ang II in vivo and in vitro. Mechanistically, Sal-miR-58 downregulates Krüppel-like factor 3 (KLF3) expression through direct binding to the 3' UTR of KLF3, which in turn relieves KLF3 repression of E3 ubiquitin ligase neural precursor cell-expressed developmentally downregulated 4-like (NEDD4L) expression, whereas NEDD4L upregulation increases the ubiquitination and degradation of the platelet isoform of phosphofructokinase (PFKP), subsequently leading to a decrease in the activation of Akt/mammalian target of rapamycin (mTOR) signaling and facilitating VSMC autophagy induced by Sal-miR-58 in the context of chronic Ang II stimulation and aneurysm formation. Our results provide the first evidence that plant-derived Sal-miR-58 induces autophagy and attenuates inflammation in VSMCs through cross-species modulation of the KLF3/NEDD4L/PFKP regulatory pathway.
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Affiliation(s)
- Yan Qin
- Department of Biochemistry and Molecular Biology, The Key Laboratory of Neural and Vascular Biology, China Administration of Education, Hebei Medical University, Shijiazhuang 050017, China; Department of Central Laboratory, Affiliated Hospital of Hebei University, Baoding 071000, China; Department of Life Science and Green Development, Hebei University, Baoding 071000, China
| | - Bin Zheng
- Department of Biochemistry and Molecular Biology, The Key Laboratory of Neural and Vascular Biology, China Administration of Education, Hebei Medical University, Shijiazhuang 050017, China
| | - Gao-Shan Yang
- Department of Biochemistry and Molecular Biology, The Key Laboratory of Neural and Vascular Biology, China Administration of Education, Hebei Medical University, Shijiazhuang 050017, China; Department of Biochemistry and Molecular Biology, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Hao-Jie Yang
- Department of Biochemistry and Molecular Biology, The Key Laboratory of Neural and Vascular Biology, China Administration of Education, Hebei Medical University, Shijiazhuang 050017, China
| | - Jing Zhou
- Department of Biochemistry and Molecular Biology, The Key Laboratory of Neural and Vascular Biology, China Administration of Education, Hebei Medical University, Shijiazhuang 050017, China; Department of Endocrine, The Second Hospital of Hebei Medical University, Shijiazhuang 050005, China
| | - Zhan Yang
- Department of Science and Technology, The Second Hospital of Hebei Medical University, Shijiazhuang 050005, China
| | - Xin-Hua Zhang
- Department of Biochemistry and Molecular Biology, The Key Laboratory of Neural and Vascular Biology, China Administration of Education, Hebei Medical University, Shijiazhuang 050017, China
| | - Hong-Ye Zhao
- Department of Biochemistry and Molecular Biology, The Key Laboratory of Neural and Vascular Biology, China Administration of Education, Hebei Medical University, Shijiazhuang 050017, China
| | - Jian-Hong Shi
- Department of Central Laboratory, Affiliated Hospital of Hebei University, Baoding 071000, China; Department of Life Science and Green Development, Hebei University, Baoding 071000, China
| | - Jin-Kun Wen
- Department of Biochemistry and Molecular Biology, The Key Laboratory of Neural and Vascular Biology, China Administration of Education, Hebei Medical University, Shijiazhuang 050017, China.
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Lusini M, Nenna A, Chello C, Greco SM, Gagliardi I, Nappi F, Chello M. Role of autophagy in aneurysm and dissection of the ascending aorta. Future Cardiol 2020; 16:517-526. [PMID: 32524854 DOI: 10.2217/fca-2019-0076] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Maintenance of physiologically balanced levels of autophagy is crucial for cellular homeostasis and in the normal vessel wall, balanced autophagy can be considered a cytoprotective mechanism that preserves endothelial function and prevents cardiovascular disease. Recent studies pointed out the importance of the modulation of the autophagic flux in the pathogenesis of aortic dissection and aneurysms of the ascending aorta. Notably, shear stress (and its receptor p62), IL-6, Rab7 and Atg5/IRE1α pathways of autophagy may be considered the novel super-selective therapeutic target for the preventive and postoperative treatment of aortic aneurysm and aortic dissection. This review intends to summarize current evidences in this field trying to enlighten new avenues for future researches.
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Affiliation(s)
- Mario Lusini
- Department of Cardiovascular Surgery, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Antonio Nenna
- Department of Cardiovascular Surgery, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Camilla Chello
- Department of Dermatology, Università La Sapienza di Roma, Rome, Italy
| | | | - Ilaria Gagliardi
- Department of Cardiovascular Surgery, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Francesco Nappi
- Department of Cardiac Surgery, Centre Cardiologique du Nord, Paris, France
| | - Massimo Chello
- Department of Cardiovascular Surgery, Università Campus Bio-Medico di Roma, Rome, Italy
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79
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Hughes WE, Beyer AM, Gutterman DD. Vascular autophagy in health and disease. Basic Res Cardiol 2020; 115:41. [PMID: 32506214 DOI: 10.1007/s00395-020-0802-6] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 05/26/2020] [Indexed: 12/14/2022]
Abstract
Homeostasis is maintained within organisms through the physiological recycling process of autophagy, a catabolic process that is intricately involved in the mobilization of nutrients during starvation, recycling of cellular cargo, as well as initiation of cellular death pathways. Specific to the cardiovascular system, autophagy responds to both chemical (e.g. free radicals) and mechanical stressors (e.g. shear stress). It is imperative to note that autophagy is not a static process, and measurement of autophagic flux provides a more comprehensive investigation into the role of autophagy. The overarching themes emerging from decades of autophagy research are that basal levels of autophagic flux are critical, physiological stressors may increase or decrease autophagic flux, and more importantly, aberrant deviations from basal autophagy may elicit detrimental effects. Autophagy has predominantly been examined within cardiac or vascular smooth muscle tissue within the context of disease development and progression. Autophagic flux within the endothelium holds an important role in maintaining vascular function, demonstrated by the necessary role for intact autophagic flux for shear-induced release of nitric oxide however the underlying mechanisms have yet to be elucidated. Within this review, we theorize that autophagy itself does not solely control vascular homeostasis, rather, it works in concert with mitochondria, telomerase, and lipids to maintain physiological function. The primary emphasis of this review is on the role of autophagy within the human vasculature, and the integrative effects with physiological processes and diseases as they relate to the vascular structure and function.
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Affiliation(s)
- William E Hughes
- Department of Medicine, Cardiovascular Center, Medical College of Wisconsin, 8701 West Watertown Plank Road, Milwaukee, WI, 53213, USA.
| | - Andreas M Beyer
- Department of Medicine, Cardiovascular Center, Medical College of Wisconsin, 8701 West Watertown Plank Road, Milwaukee, WI, 53213, USA
| | - David D Gutterman
- Department of Medicine, Cardiovascular Center, Medical College of Wisconsin, 8701 West Watertown Plank Road, Milwaukee, WI, 53213, USA
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Abdellatif M, Ljubojevic-Holzer S, Madeo F, Sedej S. Autophagy in cardiovascular health and disease. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2020; 172:87-106. [PMID: 32620252 DOI: 10.1016/bs.pmbts.2020.04.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Autophagy is a cellular housekeeping and quality control mechanism that is essential for homeostasis and survival. By virtue of this role, any perturbations to the flow of this process in cardiac or vascular cells can elicit harmful effects on the cardiovascular system, and subsequently affect whole organismal health. In this chapter, we summarize the preclinical evidence supporting the role of autophagy in sustaining cardiovascular health during homeostasis and disease. Furthermore, we discuss how autophagy activation by dietary, genetic and pharmaceutical interventions can be exploited to counteract common cardiovascular disorders, including atherosclerosis, coronary artery disease, diabetic cardiomyopathy, arrhythmia, chemotherapy-induced cardiotoxicity and heart failure.
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Affiliation(s)
| | - Senka Ljubojevic-Holzer
- Department of Cardiology, Medical University of Graz, Graz, Austria; BioTechMed Graz, Graz, Austria
| | - Frank Madeo
- BioTechMed Graz, Graz, Austria; Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Simon Sedej
- Department of Cardiology, Medical University of Graz, Graz, Austria; BioTechMed Graz, Graz, Austria; Institute of Physiology, Faculty of Medicine, University of Maribor, Maribor, Slovenia.
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MALAT1/miR-15b-5p/ MAPK1 mediates endothelial progenitor cells autophagy and affects coronary atherosclerotic heart disease via mTOR signaling pathway. Aging (Albany NY) 2020; 11:1089-1109. [PMID: 30787203 PMCID: PMC6402525 DOI: 10.18632/aging.101766] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 01/05/2019] [Indexed: 02/06/2023]
Abstract
Objective: Present study focused on the influence of lncRNA MALAT1 on coronary atherosclerotic heart disease (CAD) by regulating miR-15b-5p/MAPK1 and mTOR signaling pathway. Method: Differentially expressed genes and activated pathway were investigated through bioinformatics analysis. QRT-PCR was conducted to verify expression of MALAT1, miR-15b-5p and MAPK1 in CAD blood samples and endothelial progenitor cells (EPCs). In addition, the interactions among MALAT1, miR-15b-5p and MAPK1 were revealed by Luciferase reporter assay. Cell autophagy of EPCs was examined by Cyto-ID Autophagy Detection Kit and transmission electron microscope. MTT assay and flow cytometry were carried out to assess cell viability and apoptosis in different interference conditions. Western blot was performed to testify the expression of pERK1/2 (MAPK1), phosphorylated mTOR, ATG1 and LC3-II. Vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) were detected by qRT-PCR. Finally, the effect of lncRNA MALAT1 on cell autophagy and atherogenesis was tested in vivo. Results: MALAT1 was overexpressed in CAD blood samples and EPCs. Knockdown of MALAT1 and MAPK1 promoted cell viability, autophagy and further suppressed the development of CAD. AntagoMALAT1 protects mice against atherosclerosis. Conclusion: LncRNA MALAT1 inhibited EPCs autophagy and increased cell viability while repressed apoptosis of CAD via activating mTOR signaling pathway.
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82
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Lu H, Sun J, Liang W, Chang Z, Rom O, Zhao Y, Zhao G, Xiong W, Wang H, Zhu T, Guo Y, Chang L, Garcia-Barrio MT, Zhang J, Chen YE, Fan Y. Cyclodextrin Prevents Abdominal Aortic Aneurysm via Activation of Vascular Smooth Muscle Cell Transcription Factor EB. Circulation 2020; 142:483-498. [PMID: 32354235 DOI: 10.1161/circulationaha.119.044803] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Abdominal aortic aneurysm (AAA) is a severe aortic disease with a high mortality rate in the event of rupture. Pharmacological therapy is needed to inhibit AAA expansion and prevent aneurysm rupture. Transcription factor EB (TFEB), a master regulator of autophagy and lysosome biogenesis, is critical to maintain cell homeostasis. In this study, we aim to investigate the role of vascular smooth muscle cell (VSMC) TFEB in the development of AAA and establish TFEB as a novel target to treat AAA. METHODS The expression of TFEB was measured in human and mouse aortic aneurysm samples. We used loss/gain-of-function approaches to understand the role of TFEB in VSMC survival and explored the underlying mechanisms through transcriptome and functional studies. Using VSMC-selective Tfeb knockout mice and different mouse AAA models, we determined the role of VSMC TFEB and a TFEB activator in AAA in vivo. RESULTS We found that TFEB is downregulated in both human and mouse aortic aneurysm lesions. TFEB potently inhibits apoptosis in VSMCs, and transcriptome analysis revealed that TFEB regulates apoptotic signaling pathways, especially apoptosis inhibitor B-cell lymphoma 2. B-cell lymphoma 2 is significantly upregulated by TFEB and is required for TFEB to inhibit VSMC apoptosis. We consistently observed that TFEB deficiency increases VSMC apoptosis and promotes AAA formation in different mouse AAA models. Furthermore, we demonstrated that 2-hydroxypropyl-β-cyclodextrin, a clinical agent used to enhance the solubility of drugs, activates TFEB and inhibits AAA formation and progression in mice. Last, we found that 2-hydroxypropyl-β-cyclodextrin inhibits AAA in a VSMC TFEB-dependent manner in mouse models. CONCLUSIONS Our study demonstrated that TFEB protects against VSMC apoptosis and AAA. TFEB activation by 2-hydroxypropyl-β-cyclodextrin may be a promising therapeutic strategy for the prevention and treatment of AAA.
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Affiliation(s)
- Haocheng Lu
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor
| | - Jinjian Sun
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor
| | - Wenying Liang
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor
| | - Ziyi Chang
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor
| | - Oren Rom
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor
| | - Yang Zhao
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor
| | - Guizhen Zhao
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor
| | - Wenhao Xiong
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor
| | - Huilun Wang
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor
| | - Tianqing Zhu
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor
| | - Yanhong Guo
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor
| | - Lin Chang
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor
| | - Minerva T Garcia-Barrio
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor
| | - Jifeng Zhang
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor
| | - Y Eugene Chen
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor
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Zhang X, Ramírez CM, Aryal B, Madrigal-Matute J, Liu X, Diaz A, Torrecilla-Parra M, Suárez Y, Cuervo AM, Sessa WC, Fernández-Hernando C. Cav-1 (Caveolin-1) Deficiency Increases Autophagy in the Endothelium and Attenuates Vascular Inflammation and Atherosclerosis. Arterioscler Thromb Vasc Biol 2020; 40:1510-1522. [PMID: 32349535 PMCID: PMC7253189 DOI: 10.1161/atvbaha.120.314291] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Supplemental Digital Content is available in the text. Endothelial Cav-1 (caveolin-1) expression plays a relevant role during atherogenesis by controlling NO production, vascular inflammation, LDL (low-density lipoprotein) transcytosis, and extracellular matrix remodeling. Additional studies have identified cholesterol-rich membrane domains as important regulators of autophagy by recruiting ATGs (autophagy-related proteins) to the plasma membrane. Here, we investigate how the expression of Cav-1 in the aortic endothelium influences autophagy and whether enhanced autophagy contributes to the atheroprotective phenotype observed in Cav-1–deficient mice.
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Affiliation(s)
- Xinbo Zhang
- From the Vascular Biology and Therapeutics Program (X.Z., C.M.R., B.A., Y.S., W.C.S., C.F.-H.), Yale University School of Medicine, New Haven, CT.,Integrative Cell Signaling and Neurobiology of Metabolism Program, Department of Comparative Medicine and Department of Pathology (X.Z., C.M.R., B.A., Y.S., C.F.-H.), Yale University School of Medicine, New Haven, CT
| | - Cristina M Ramírez
- From the Vascular Biology and Therapeutics Program (X.Z., C.M.R., B.A., Y.S., W.C.S., C.F.-H.), Yale University School of Medicine, New Haven, CT.,Integrative Cell Signaling and Neurobiology of Metabolism Program, Department of Comparative Medicine and Department of Pathology (X.Z., C.M.R., B.A., Y.S., C.F.-H.), Yale University School of Medicine, New Haven, CT.,IMDEA Research Institute of Food and Health Sciences, Madrid, Spain (C.M.R., M.T.-P.)
| | - Binod Aryal
- From the Vascular Biology and Therapeutics Program (X.Z., C.M.R., B.A., Y.S., W.C.S., C.F.-H.), Yale University School of Medicine, New Haven, CT.,Integrative Cell Signaling and Neurobiology of Metabolism Program, Department of Comparative Medicine and Department of Pathology (X.Z., C.M.R., B.A., Y.S., C.F.-H.), Yale University School of Medicine, New Haven, CT
| | - Julio Madrigal-Matute
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY (J.M.-M., A.D., A.M.C.)
| | - Xinran Liu
- Department of Cell Biology (X.L.), Yale University School of Medicine, New Haven, CT
| | - Antonio Diaz
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY (J.M.-M., A.D., A.M.C.)
| | | | - Yajaira Suárez
- From the Vascular Biology and Therapeutics Program (X.Z., C.M.R., B.A., Y.S., W.C.S., C.F.-H.), Yale University School of Medicine, New Haven, CT.,Integrative Cell Signaling and Neurobiology of Metabolism Program, Department of Comparative Medicine and Department of Pathology (X.Z., C.M.R., B.A., Y.S., C.F.-H.), Yale University School of Medicine, New Haven, CT
| | - Ana M Cuervo
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY (J.M.-M., A.D., A.M.C.)
| | - William C Sessa
- From the Vascular Biology and Therapeutics Program (X.Z., C.M.R., B.A., Y.S., W.C.S., C.F.-H.), Yale University School of Medicine, New Haven, CT.,Department of Pharmacology (W.C.S.), Yale University School of Medicine, New Haven, CT
| | - Carlos Fernández-Hernando
- From the Vascular Biology and Therapeutics Program (X.Z., C.M.R., B.A., Y.S., W.C.S., C.F.-H.), Yale University School of Medicine, New Haven, CT.,Integrative Cell Signaling and Neurobiology of Metabolism Program, Department of Comparative Medicine and Department of Pathology (X.Z., C.M.R., B.A., Y.S., C.F.-H.), Yale University School of Medicine, New Haven, CT
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Liu S, Huang T, Liu R, Cai H, Pan B, Liao M, Yang P, Wang L, Huang J, Ge Y, Xu B, Wang W. Spermidine Suppresses Development of Experimental Abdominal Aortic Aneurysms. J Am Heart Assoc 2020; 9:e014757. [PMID: 32308093 PMCID: PMC7428527 DOI: 10.1161/jaha.119.014757] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Background The protective effects of polyamines on cardiovascular disease have been demonstrated in many studies. However, the roles of spermidine, a natural polyamine, in abdominal aortic aneurysm (AAA) disease have not been studied. In this study, we investigated the influence and potential mechanisms of spermidine treatment on experimental AAA disease. Methods and Results Experimental AAAs were induced in 8‐ to 10‐week‐old male C57BL/6J mice by transient intra‐aortic infusion of porcine pancreatic elastase. Spermidine was administered via drinking water at a concentration of 3 mmol/L. Spermidine treatment prevented experimental AAA formation with preservation of medial elastin and smooth muscle cells. In immunostaining, macrophages, T cells, neutrophils, and neovessels were significantly reduced in aorta of spermidine‐treated, as compared with vehicle‐treated elastase‐infused mice. Additionally, flow cytometric analysis showed that spermidine treatment reduced aortic leukocyte infiltration and circulating inflammatory cells. Furthermore, we demonstrated that spermidine treatment promoted autophagy‐related proteins in experimental AAAs using Western blot analysis, immunostaining, and transmission electron microscopic examination. Autophagic function was evaluated for human abdominal aneurysmal and nonaneurysmal adjacent aortae from AAA patients using Western blot analysis and immunohistochemistry. Dysregulated autophagic function, as evidenced by increased SQSTM1/p62 protein and phosphorylated mTOR, was found in aneurysmal, as compared with nonaneurysmal, aortic segments. Conclusions Our results suggest that spermidine supplementation limits experimental AAA formation associated with preserved aortic structural integrity, attenuated aortic inflammatory infiltration, reduced circulating inflammatory monocytes, and increased autophagy‐related proteins. These findings suggest that spermidine may be a promising treatment for AAA disease.
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Affiliation(s)
- Shuai Liu
- Department of General & Vascular Surgery Xiangya Hospital Central South University Changsha Hunan China
| | - Tingting Huang
- Department of General & Vascular Surgery Xiangya Hospital Central South University Changsha Hunan China
| | - Rui Liu
- Department of General & Vascular Surgery Xiangya Hospital Central South University Changsha Hunan China
| | - Huoying Cai
- Department of General & Vascular Surgery Xiangya Hospital Central South University Changsha Hunan China
| | - Baihong Pan
- Department of General & Vascular Surgery Xiangya Hospital Central South University Changsha Hunan China
| | - Mingmei Liao
- Department of General & Vascular Surgery Xiangya Hospital Central South University Changsha Hunan China
| | - Pu Yang
- Department of General & Vascular Surgery Xiangya Hospital Central South University Changsha Hunan China
| | - Lei Wang
- Department of General & Vascular Surgery Xiangya Hospital Central South University Changsha Hunan China
| | - Jianhua Huang
- Department of General & Vascular Surgery Xiangya Hospital Central South University Changsha Hunan China
| | - Yingbin Ge
- Department of Physiology Nanjing Medical University Nanjing Jiangsu China
| | - Baohui Xu
- Department of Surgery Stanford University School of Medicine Stanford CA
| | - Wei Wang
- Department of General & Vascular Surgery Xiangya Hospital Central South University Changsha Hunan China.,National Clinical Research Center for Geriatric Disorders Xiangya Hospital Central South University Changsha Hunan China
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85
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Li N, Zhang RX, Xie XJ, Gu HF. Autophagy in chronic stress induced atherosclerosis. Clin Chim Acta 2020; 503:70-75. [DOI: 10.1016/j.cca.2020.01.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 01/05/2020] [Accepted: 01/08/2020] [Indexed: 12/12/2022]
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86
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Lv XF, Zhang YJ, Liu X, Zheng HQ, Liu CZ, Zeng XL, Li XY, Lin XC, Lin CX, Ma MM, Zhang FR, Shang JY, Zhou JG, Liang SJ, Guan YY. TMEM16A ameliorates vascular remodeling by suppressing autophagy via inhibiting Bcl-2-p62 complex formation. Am J Cancer Res 2020; 10:3980-3993. [PMID: 32226533 PMCID: PMC7086348 DOI: 10.7150/thno.41028] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 02/13/2020] [Indexed: 12/25/2022] Open
Abstract
Rationale: Transmembrane member 16A (TMEM16A) is a component of calcium-activated chloride channels that regulate vascular smooth muscle cell (SMC) proliferation and remodeling. Autophagy, a highly conserved cellular catabolic process in eukaryotes, exerts important physiological functions in vascular SMCs. In the current study, we investigated the relationship between TMEM16A and autophagy during vascular remodeling. Methods: We generated a transgenic mouse that overexpresses TMEM16A specifically in vascular SMCs to verify the role of TMEM16A in vascular remodeling. Techniques employed included immunofluorescence, electron microscopy, co-immunoprecipitation, and Western blotting. Results: Autophagy was activated in aortas from angiotensin II (AngII)-induced hypertensive mice with decreased TMEM16A expression. The numbers of light chain 3B (LC3B)-positive puncta in aortas correlated with the medial cross-sectional aorta areas and TMEM16A expression during hypertension. SMC-specific TMEM16A overexpression markedly inhibited AngII-induced autophagy in mouse aortas. Moreover, in mouse aortic SMCs (MASMCs), AngII-induced autophagosome formation and autophagic flux were blocked by TMEM16A upregulation and were promoted by TMEM16A knockdown. The effect of TMEM16A on autophagy was independent of the mTOR pathway, but was associated with reduced kinase activity of the vacuolar protein sorting 34 (VPS34) enzyme. Overexpression of VPS34 attenuated the effect of TMEM16A overexpression on MASMC proliferation, while the effect of TMEM16A downregulation was abrogated by a VPS34 inhibitor. Further, co-immunoprecipitation assays revealed that TMEM16A interacts with p62. TMEM16A overexpression inhibited AngII-induced p62-Bcl-2 binding and enhanced Bcl-2-Beclin-1 interactions, leading to suppression of Beclin-1/VPS34 complex formation. However, TMEM16A downregulation showed the opposite effects. Conclusion: TMEM16A regulates the four-way interaction between p62, Bcl-2, Beclin-1, and VPS34, and coordinately prevents vascular autophagy and remodeling.
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87
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Jia X, Shao L, Liu C, Chen T, Peng L, Cao Y, Zhang C, Yang X, Zhang G, Gao J, Fan G, Gu M, Du H, Xia Z. GAA compound heterozygous mutations associated with autophagic impairment cause cerebral infarction in Pompe disease. Aging (Albany NY) 2020; 12:4268-4282. [PMID: 32126021 PMCID: PMC7093195 DOI: 10.18632/aging.102879] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 02/04/2020] [Indexed: 12/13/2022]
Abstract
Clinical manifestations of the late-onset adult Pompe disease (glycogen storage disease type II) are heterogeneous. To identify genetic defects of a special patient population with cerebrovascular involvement as the main symptom, we performed whole-genome sequencing (WGS) analysis on a consanguineous Chinese family of total eight members including two Pompe siblings both had cerebral infarction. Two novel compound heterozygous variants were found in GAA gene: c.2238G>C in exon 16 and c.1388_1406del19 in exon 9 in the two patients. We verified the function of the two mutations in leading to defects in GAA protein expression and enzyme activity that are associated with autophagic impairment. We further performed a gut microbiome metagenomics analysis, found that the child’s gut microbiome metagenome is very similar to his mother. Our finding enriches the gene mutation spectrum of Pompe disease, and identified the association of the two new mutations with autophagy impairment. Our data also indicates that gut microbiome could be shared within Pompe patient and cohabiting family members, and the abnormal microbiome may affect the blood biochemical index. Our study also highlights the importance of deep DNA sequencing in potential clinical applications.
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Affiliation(s)
- Xiaodong Jia
- Joint Laboratory for Translational Medicine Research, Liaocheng People's Hospital, Liaocheng 252000, Shandong, P.R. China
| | - Libin Shao
- BGI-Qingdao, BGI-Shenzhen, Qingdao 266555, P.R. China.,School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, P.R. China
| | | | - Tuanzhi Chen
- Department of Neurology, Liaocheng People's Hospital and Liaocheng Clinical School of Shandong First Medical University, Liaocheng 252000, Shandong, P.R. China
| | - Ling Peng
- BGI-Qingdao, BGI-Shenzhen, Qingdao 266555, P.R. China
| | - Yinguang Cao
- Department of Clinical laboratory, Liaocheng People's Hospital and Liaocheng Clinical School of Shandong First Medical University, Liaocheng 252000, Shandong, P.R. China
| | - Chuanchen Zhang
- Department of Radiology, Liaocheng People's Hospital and Liaocheng Clinical School of Shandong First Medical University, Liaocheng 252000, Shandong, P.R. China
| | - Xiafeng Yang
- Department of Neurology, Liaocheng People's Hospital and Liaocheng Clinical School of Shandong First Medical University, Liaocheng 252000, Shandong, P.R. China
| | - Guifeng Zhang
- Shandong First Medical University, Taian 271016, Shandong, P.R. China
| | - Jianlu Gao
- Joint Laboratory for Translational Medicine Research, Liaocheng People's Hospital, Liaocheng 252000, Shandong, P.R. China.,Department of Ophthalmology, Liaocheng People's Hospital and Liaocheng Clinical School of Shandong First Medical University, Liaocheng 252000, Shandong, P.R. China.,School of Medicine Shandong University, Jinan 250012, Shandong, P.R. China
| | - Guangyi Fan
- BGI-Qingdao, BGI-Shenzhen, Qingdao 266555, P.R. China.,BGI-Shenzhen, Shenzhen 518083, P.R. China.,China National GeneBank, BGI-Shenzhen, Shenzhen 518120, P.R. China.,BGI-Fuyang, BGI-Shenzhen, Fuyang 236009, P.R. China
| | - Mingliang Gu
- Joint Laboratory for Translational Medicine Research, Liaocheng People's Hospital, Liaocheng 252000, Shandong, P.R. China
| | - Hongli Du
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, P.R. China
| | - Zhangyong Xia
- Department of Neurology, Liaocheng People's Hospital and Liaocheng Clinical School of Shandong First Medical University, Liaocheng 252000, Shandong, P.R. China.,School of Medicine Shandong University, Jinan 250012, Shandong, P.R. China
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88
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Xiong Q, Hu Y, Ye X, Song Z, Yuan J, Xiong B, Jing Y, Shi Y, Xu T, Wu J, Zhang Q, Liang J, Zhou L. Extraction, purification and characterization of sulphated polysaccharide from Bellamya quadrata and its stabilization roles on atherosclerotic plaque. Int J Biol Macromol 2020; 152:314-326. [PMID: 32109475 DOI: 10.1016/j.ijbiomac.2020.02.243] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 02/11/2020] [Accepted: 02/22/2020] [Indexed: 11/28/2022]
Abstract
The aim of this paper was to investigate the extraction, purification and characterization of sulphated polysaccharide (BQPS) from Bellamya quadrata and its stabilization roles on atherosclerotic plaque. Firstly, crude polysaccharide (CBQP) from Bellamya quadrata was extracted by protease enzyme assisted extraction. Moreover, its optimal parameters were obtained by the response surface method as follows: the ratio of water to raw material of 24:1, enzyme dosage of 285 U/g, enzymolysis pH value of 4.7 and temperature of 67 °C. Secondly, CBQP was further purified to obtain the target polysaccharide BQPS by Q Sepharose Fast Flow and Sephacryl S-400 gel column chromatography. Then, the characterization of BQPS revealed that it possessed a total polysaccharide content of 91.88 ± 1.23%, sulfuric acid group content of 9.12 ± 1.59% and molecular weight of 91.1 kDa. BQPS was only consisted of glucose without any proteins. Finally, BQPS was confirmed to have a significant stabilizing effect on atherosclerotic plaque and its mechanism was related to the selective promotion of autophagy with the precisely right strength.
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Affiliation(s)
- Qingping Xiong
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China; National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huai'an 223003, China; Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong, China.
| | - Youdong Hu
- Department of Geriatric Medicine, Huai'an Second People's Hospital, Huai'an 223002, Jiangsu, China
| | - Xianying Ye
- Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong, China
| | - Zhuoyue Song
- Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong, China
| | - Jun Yuan
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China
| | - Boyang Xiong
- Department of Pharmacy, Jiangsu Food & Pharmaceutical Science College, Huai'an 223003, Jiangsu, China
| | - Yi Jing
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China; National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Yingying Shi
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China; National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Tingting Xu
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China; National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Jun Wu
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China
| | - Qianghua Zhang
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China; National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Jian Liang
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China; Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong, China.
| | - Li Zhou
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China; Department of Intensive Care Unit, Dazhou Central Hospital, Dazhou 635000, Sichuan, China.
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89
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Chen TQ, Hu N, Huo B, Masau JF, Yi X, Zhong XX, Chen YJ, Guo X, Zhu XH, Wei X, Jiang DS. EHMT2/G9a Inhibits Aortic Smooth Muscle Cell Death by Suppressing Autophagy Activation. Int J Biol Sci 2020; 16:1252-1263. [PMID: 32174799 PMCID: PMC7053323 DOI: 10.7150/ijbs.38835] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 01/05/2020] [Indexed: 02/06/2023] Open
Abstract
Although EHMT2 (also known as G9a) plays a critical role in several kinds of cancers and cardiac remodeling, its function in vascular smooth muscle cells (VSMCs) remains unknown. In the present study, we revealed a novel function of EHMT2 in regulating autophagic cell death (ACD) of VSMC. Inhibition of EHMT2 by BIX01294 or knockdown of EHMT2 resulted in reduced VSMC numbers which were independent of proliferation and apoptosis. Interestingly, EHMT2 protein levels were significantly decreased in VSMCs treated with autophagic inducers. Moreover, more autophagic vacuoles and accumulated LC3II were detected in VSMCs treated with BIX01294 or lenti-shEHMT2 than their counterparts. Furthermore, we found that EHMT2 inhibited the ACD of VSMCs by suppressing autophagosome formation. Mechanistically, the pro-autophagic effect elicited by EHMT2 inhibition was associated with SQSTM1 and BECN1 overexpression. Moreover, these detrimental effects were largely nullified by SQSTM1 or BECN1 knockdown. More importantly, similar results were observed in primary human aortic VSMCs. Overall, these findings suggest that EHMT2 functions as a crucial negative regulator of ACD via decreasing SQSTM1 or BECN1 expression and that EHMT2 could be a potent therapeutic target for cardiovascular diseases (e.g., aortic dissection).
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Affiliation(s)
- Tai-Qiang Chen
- Division of Cardiothoracic and Vascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Nan Hu
- Department of Cardiothoracic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
| | - Bo Huo
- Division of Cardiothoracic and Vascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jackson Ferdinand Masau
- Division of Cardiothoracic and Vascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xin Yi
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Xiao-Xuan Zhong
- Division of Cardiothoracic and Vascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yong-Jie Chen
- Division of Cardiothoracic and Vascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xian Guo
- Division of Cardiothoracic and Vascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xue-Hai Zhu
- Division of Cardiothoracic and Vascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Key Laboratory of Organ Transplantation, Ministry of Education.,NHC Key Laboratory of Organ Transplantation.,Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences
| | - Xiang Wei
- Division of Cardiothoracic and Vascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Key Laboratory of Organ Transplantation, Ministry of Education.,NHC Key Laboratory of Organ Transplantation.,Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences
| | - Ding-Sheng Jiang
- Division of Cardiothoracic and Vascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Key Laboratory of Organ Transplantation, Ministry of Education.,NHC Key Laboratory of Organ Transplantation.,Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences
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90
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Zhang YY, Shi YN, Zhu N, Wang W, Deng CF, Xie XJ, Liao DF, Qin L. Autophagy: a killer or guardian of vascular smooth muscle cells. J Drug Target 2020; 28:449-455. [DOI: 10.1080/1061186x.2019.1705312] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yin-Yu Zhang
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China
- Division of Stem Cell Regulation and Application, Hunan University of Chinese Medicine, Changsha, China
| | - Ya-Ning Shi
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China
- Division of Stem Cell Regulation and Application, Hunan University of Chinese Medicine, Changsha, China
| | - Neng Zhu
- The First Affiliated Hospital, Hunan University of Chinese Medicine, Changsha, China
| | - Wei Wang
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China
- Division of Stem Cell Regulation and Application, Hunan University of Chinese Medicine, Changsha, China
| | - Chang-Feng Deng
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China
- Division of Stem Cell Regulation and Application, Hunan University of Chinese Medicine, Changsha, China
| | - Xue-Jiao Xie
- College of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, China
| | - Duan-Fang Liao
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China
- Division of Stem Cell Regulation and Application, Hunan University of Chinese Medicine, Changsha, China
| | - Li Qin
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China
- Division of Stem Cell Regulation and Application, Hunan University of Chinese Medicine, Changsha, China
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91
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You G, Long X, Song F, Huang J, Tian M, Xiao Y, Deng S, Wu Q. Metformin Activates the AMPK-mTOR Pathway by Modulating lncRNA TUG1 to Induce Autophagy and Inhibit Atherosclerosis. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:457-468. [PMID: 32099330 PMCID: PMC7006854 DOI: 10.2147/dddt.s233932] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 01/11/2020] [Indexed: 12/25/2022]
Abstract
Background Metformin has been shown to inhibit the proliferation and migration of vascular wall cells. However, the mechanism through which metformin acts on atherosclerosis (AS) via the long non-coding RNA taurine up-regulated gene 1 (lncRNA TUG1) is still unknown. Thus, this research investigated the effect of metformin and lncRNA TUG1 on AS. Methods First, qRT-PCR was used to detect the expression of lncRNA TUG1 in patients with coronary heart disease (CHD). Then, the correlation between metformin and TUG1 expression in vitro and their effects on proliferation, migration, and autophagy in vascular wall cells were examined. Furthermore, in vivo experiments were performed to verify the anti-AS effect of metformin and TUG1 to provide a new strategy for the prevention and treatment of AS. Results qRT-PCR results suggested that lncRNA TUG1 expression was robustly upregulated in patients with CHD. In vitro experiments indicated that after metformin administration, the expression of lncRNA TUG1 decreased in a time-dependent manner. Metformin and TUG1 knockdown via small interfering RNA both inhibited proliferation and migration while promoted autophagy via the AMPK/mTOR pathway in vascular wall cells. In vivo experiments with a rat AS model further demonstrated that metformin and sh-TUG1 could inhibit the progression of AS. Conclusion Taken together, our data demonstrate that metformin might function to prevent AS by activating the AMPK/mTOR pathway via lncRNA TUG1.
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Affiliation(s)
- Ganhua You
- Guizhou University School of Medicine, Guiyang 550025, People's Republic of China.,Guizhou Institute for Food and Drug Control, Guiyang 550004, People's Republic of China
| | - Xiangshu Long
- Department of Cardiology, Guizhou Provincial People's Hospital, Guiyang 550002, People's Republic of China.,Department of Cardiology, People's Hospital of Guizhou University, Guiyang 550002, People's Republic of China
| | - Fang Song
- Department of Cardiology, Guizhou Provincial People's Hospital, Guiyang 550002, People's Republic of China.,Department of Cardiology, People's Hospital of Guizhou University, Guiyang 550002, People's Republic of China
| | - Jing Huang
- Department of Cardiology, Guizhou Provincial People's Hospital, Guiyang 550002, People's Republic of China.,Department of Cardiology, People's Hospital of Guizhou University, Guiyang 550002, People's Republic of China
| | - Maobo Tian
- Department of Cardiology, Guizhou Provincial People's Hospital, Guiyang 550002, People's Republic of China.,Department of Cardiology, People's Hospital of Guizhou University, Guiyang 550002, People's Republic of China
| | - Yan Xiao
- Department of Cardiology, Guizhou Provincial People's Hospital, Guiyang 550002, People's Republic of China.,Department of Cardiology, People's Hospital of Guizhou University, Guiyang 550002, People's Republic of China
| | - Shiyan Deng
- Department of Cardiology, Guizhou Provincial People's Hospital, Guiyang 550002, People's Republic of China.,Department of Cardiology, People's Hospital of Guizhou University, Guiyang 550002, People's Republic of China
| | - Qiang Wu
- Department of Cardiology, Guizhou Provincial People's Hospital, Guiyang 550002, People's Republic of China.,Department of Cardiology, People's Hospital of Guizhou University, Guiyang 550002, People's Republic of China
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92
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De Munck DG, De Meyer GR, Martinet W. Autophagy as an emerging therapeutic target for age-related vascular pathologies. Expert Opin Ther Targets 2020; 24:131-145. [PMID: 31985292 DOI: 10.1080/14728222.2020.1723079] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Introduction: The incidence of age-related vascular diseases such as arterial stiffness, hypertension and atherosclerosis, is rising dramatically and is substantially impacting healthcare systems. Mounting evidence suggests that there is an important role for autophagy in maintaining (cardio)vascular health. Impaired vascular autophagy has been linked to arterial aging and the initiation of vascular disease.Areas covered: The function and implications of autophagy in vascular smooth muscle cells and endothelial cells are discussed in healthy blood vessels and arterial disease. Furthermore, we discuss current treatment options for vascular disease and their links with autophagy. A literature search was conducted in PubMed up to October 2019.Expert opinion: Although the therapeutic potential of inducing autophagy in age-related vascular pathologies is considerable, several issues should be addressed before autophagy induction can be clinically used to treat vascular disease. These issues include uncertainty regarding the most effective drug target as well as the lack of potency and selectivity of autophagy inducing drugs. Moreover, drug tolerance or autophagy mediated cell death have been reported as possible adverse effects. Special attention is required for determining the cause of autophagy deficiency to optimize the treatment strategy.
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Affiliation(s)
- Dorien G De Munck
- Laboratory of Physiopharmacology, University of Antwerp, Antwerp, Belgium
| | - Guido Ry De Meyer
- Laboratory of Physiopharmacology, University of Antwerp, Antwerp, Belgium
| | - Wim Martinet
- Laboratory of Physiopharmacology, University of Antwerp, Antwerp, Belgium
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93
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Wang B, Dong G, Zhang Q, Yan F, Li Z, Li C, Zhang H, Ma Q, Dai J, Si C, Xiong H. The inhibitor of autophagy SBI-0206965 aggravates atherosclerosis through decreasing myeloid-derived suppressor cells. Exp Ther Med 2019; 19:1370-1378. [PMID: 32010311 PMCID: PMC6966176 DOI: 10.3892/etm.2019.8317] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 11/14/2019] [Indexed: 02/06/2023] Open
Abstract
Atherosclerosis (AS) is currently the leading cause of mortality worldwide, with the development of new strategies to prevent the formation and rupture of atherosclerotic plaques being a paramount area of research. Amounting evidence suggests autophagy has an important role in the pathogenesis of AS and may be a potential therapeutic target. In this study, the effect of SBI-0206965(6965), a novel inhibitor of autophagy, was tested on the development of AS in apolipoprotein E deficient (ApoE−/−) mice. Systemic application of 6965 was found to aggravate AS, with increased plaque size and decreased plaque stability in comparison with the control. Of note, it was observed that 6965 decreased the proportion of myeloid-derived suppressor cells (MDSCs). Further investigation demonstrated MDSCs markedly alleviated AS in ApoE−/− mice; while 6965 reduced the viability and promoted apoptosis of MDSCs in vitro. This is the first study describing an association between autophagy and MDSCs in AS models, providing a novel mechanism to potentially target in the management of this condition.
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Affiliation(s)
- Bo Wang
- Institute of Forensic Medicine and Laboratory Medicine, Jining Medical University, Jining, Shandong 272067, P.R. China.,Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, Shandong 272067, P.R. China
| | - Guanjun Dong
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, Shandong 272067, P.R. China
| | - Qingqiing Zhang
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, Shandong 272067, P.R. China
| | - Fenglian Yan
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, Shandong 272067, P.R. China
| | - Zhihua Li
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, Shandong 272067, P.R. China
| | - Chunxia Li
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, Shandong 272067, P.R. China
| | - Hui Zhang
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, Shandong 272067, P.R. China
| | - Qun Ma
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, Shandong 272067, P.R. China
| | - Jun Dai
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, Shandong 272067, P.R. China
| | - Chuanping Si
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, Shandong 272067, P.R. China
| | - Huabao Xiong
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
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94
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Basatemur GL, Jørgensen HF, Clarke MCH, Bennett MR, Mallat Z. Vascular smooth muscle cells in atherosclerosis. Nat Rev Cardiol 2019; 16:727-744. [PMID: 31243391 DOI: 10.1038/s41569-019-0227-9] [Citation(s) in RCA: 596] [Impact Index Per Article: 119.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/23/2019] [Indexed: 02/08/2023]
Abstract
Vascular smooth muscle cells (VSMCs) are a major cell type present at all stages of an atherosclerotic plaque. According to the 'response to injury' and 'vulnerable plaque' hypotheses, contractile VSMCs recruited from the media undergo phenotypic conversion to proliferative synthetic cells that generate extracellular matrix to form the fibrous cap and hence stabilize plaques. However, lineage-tracing studies have highlighted flaws in the interpretation of former studies, revealing that these studies had underestimated both the content and functions of VSMCs in plaques and have thus challenged our view on the role of VSMCs in atherosclerosis. VSMCs are more plastic than previously recognized and can adopt alternative phenotypes, including phenotypes resembling foam cells, macrophages, mesenchymal stem cells and osteochondrogenic cells, which could contribute both positively and negatively to disease progression. In this Review, we present the evidence for VSMC plasticity and summarize the roles of VSMCs and VSMC-derived cells in atherosclerotic plaque development and progression. Correct attribution and spatiotemporal resolution of clinically beneficial and detrimental processes will underpin the success of any therapeutic intervention aimed at VSMCs and their derivatives.
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Affiliation(s)
- Gemma L Basatemur
- Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, Cambridge, UK
| | - Helle F Jørgensen
- Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, Cambridge, UK
| | - Murray C H Clarke
- Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, Cambridge, UK
| | - Martin R Bennett
- Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, Cambridge, UK
| | - Ziad Mallat
- Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, Cambridge, UK.
- INSERM U970, Paris Cardiovascular Research Center, Paris, France.
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France.
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95
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Wang YT, Chen J, Li X, Umetani M, Chen Y, Li PL, Zhang Y. Contribution of transcription factor EB to adipoRon-induced inhibition of arterial smooth muscle cell proliferation and migration. Am J Physiol Cell Physiol 2019; 317:C1034-C1047. [PMID: 31483704 PMCID: PMC6879882 DOI: 10.1152/ajpcell.00294.2019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/29/2019] [Accepted: 08/29/2019] [Indexed: 12/11/2022]
Abstract
Abnormal vascular smooth muscle cell (SMC) dedifferentiation with increased proliferation and migration during pathological vascular remodeling is associated with vascular disorders, such as atherosclerosis and in-stent restenosis. AdipoRon, a selective agonist of adiponectin receptor, has been shown to protect against vascular remodeling by preventing SMC dedifferentiation. However, the molecular mechanisms that mediate adipoRon-induced SMC differentiation are not well understood. The present study aimed to elucidate the role of transcription factor EB (TFEB), a master regulator of autophagy, in mediating adipoRon's effect on SMCs. In cultured arterial SMCs, adipoRon dose-dependently increased TFEB activation, which is accompanied by upregulated transcription of genes involved in autophagy pathway and enhanced autophagic flux. In parallel, adipoRon suppressed serum-induced cell proliferation and caused cell cycle arrest. Moreover, adipoRon inhibited SMC migration as characterized by wound-healing retardation, F-actin reorganization, and matrix metalloproteinase-9 downregulation. These inhibitory effects of adipoRon on proliferation and migration were attenuated by TFEB gene silencing. Mechanistically, activation of TFEB by adipoRon is dependent on intracellular calcium, but it is not associated with changes in AMPK, ERK1/2, Akt, or molecular target of rapamycin complex 1 activation. Using ex vivo aortic explants, we demonstrated that adipoRon inhibited sprouts that had outgrown from aortic rings, whereas lentiviral TFEB shRNA transduction significantly reversed this effect of adipoRon on aortic rings. Taken together, our results indicate that adipoRon activates TFEB signaling that helps maintain the quiescent and differentiated status of arterial SMCs, preventing abnormal SMC dedifferentiation. This study provides novel mechanistic insights into understanding the therapeutic effects of adipoRon on TFEB signaling and pathological vascular remodeling.
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Affiliation(s)
- Yun-Ting Wang
- School of Pharmaceutical, Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas
| | - Jiajie Chen
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas
| | - Xiang Li
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas
| | - Michihisa Umetani
- Center for Nuclear Receptors and Cell Signaling, Department of Biology and Biochemistry, University of Houston, Houston, Texas
| | - Yang Chen
- School of Pharmaceutical, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Pin-Lan Li
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, Virginia
| | - Yang Zhang
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas
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96
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Wang YT, Li X, Chen J, McConnell BK, Chen L, Li PL, Chen Y, Zhang Y. Activation of TFEB ameliorates dedifferentiation of arterial smooth muscle cells and neointima formation in mice with high-fat diet. Cell Death Dis 2019; 10:676. [PMID: 31515484 PMCID: PMC6742653 DOI: 10.1038/s41419-019-1931-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 08/09/2019] [Accepted: 08/26/2019] [Indexed: 12/30/2022]
Abstract
Autophagy is recently implicated in regulating vascular smooth muscle cell (SMC) homeostasis and in the pathogenesis of vascular remodeling. Transcription factor EB (TFEB) is a master regulator of autophagy signaling pathways. However, the molecular mechanisms and functional roles of TFEB in SMC homeostasis have not been elucidated. Here, we surveyed the ability of TFEB to regulate autophagy pathway in SMCs, and whether pharmacological activation of TFEB favors SMC homeostasis preventing dedifferentiation and pathogenic vascular remodeling. In primary cultured SMCs, TFEB activator trehalose induced nuclear translocation of TFEB and upregulation of TFEB-controlled autophagy genes leading to enhanced autophagy signaling. Moreover, trehalose suppressed serum-induced SMC dedifferentiation to synthetic phenotypes as characterized by inhibited proliferation and migration. These effects of trehalose were mimicked by ectopic upregulation of TFEB and inhibited by TFEB gene silencing. In animal experiments, partial ligation of carotid arteries induced downregulation of TFEB pathway in the media layer of these arteries. Such TFEB suppression was correlated with increased SMC dedifferentiation and aggravated high-fat diet (HFD)-induced neointima formation. Treatment of mice with trehalose reversed this TFEB pathway suppression, and prevented SMC dedifferentiation and HFD-induced neointima formation. In conclusion, our findings have identified TFEB as a novel positive regulator for autophagy pathway and cellular homeostasis in SMCs. Our data suggest that suppression of TFEB may be an initiating mechanism that promotes SMC dedifferentiation leading to accelerated neointima formation in vascular disorders associated with metabolic stress, whereas trehalose reverses these changes. These findings warrant further evaluation of trehalose in the clinical settings.
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Affiliation(s)
- Yun-Ting Wang
- School of Pharmaceutical, Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Xiang Li
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Jiajie Chen
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Bradley K McConnell
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Li Chen
- Department of Biology and Biochemistry, University of Houston, Houston, TX, USA
| | - Pin-Lan Li
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Yang Chen
- School of Pharmaceutical, Guangzhou University of Chinese Medicine, Guangzhou, China.
| | - Yang Zhang
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA.
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97
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Ma L, Zheng H, Zhang T. IL-10 suppress vascular smooth muscle cell apoptosis via JAK2/STAT3 signaling pathway and its mechanism of action in atherosclerosis. MINERVA ENDOCRINOL 2019; 44:402-405. [PMID: 31359747 DOI: 10.23736/s0391-1977.19.03060-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lei Ma
- Department of Neurology, Tengzhou Central People's Hospital, Tengzhou, China
| | - Haibo Zheng
- Department of Laboratory, Tengzhou Central People's Hospital, Tengzhou, China
| | - Tao Zhang
- Department of Neurology, Tengzhou Central People's Hospital, Tengzhou, China -
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98
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Is there a role for autophagy in ascending aortopathy associated with tricuspid or bicuspid aortic valve? Clin Sci (Lond) 2019; 133:805-819. [PMID: 30991346 DOI: 10.1042/cs20181092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/27/2019] [Accepted: 03/18/2019] [Indexed: 01/04/2023]
Abstract
Autophagy is a conserved process by which cytoplasmatic elements are sequestered in vesicles and degraded after their fusion with lysosomes, thus recycling the precursor molecules. The autophagy-mediated removal of redundant/harmful/damaged organelles and biomolecules plays not only a replenishing function, but protects against stressful conditions through an adaptive mechanism. Autophagy, known to play a role in several pathological conditions, is now gaining increasing attention also in the perspective of the identification of the pathogenetic mechanisms at the basis of ascending thoracic aortic aneurysm (TAA), a localized or diffused dilatation of the aorta with an abnormal widening greater than 50 percent of the vessel's normal diameter. TAA is less frequent than abdominal aortic aneurysm (AAA), but is encountered with a higher percentage in patients with congenital heart disease or known genetic syndromes. Several biological aspects of TAA pathophysiology remain to be elucitated and therapeutic needs are still widely unmet. One of the most controversial and epidemiologically important forms of TAA is that associated with the congenital bicuspid malformation of the aortic valve (BAV). Dysregulated autophagy in response, for example, to wall shear stress alterations, has been demonstrated to affect the phenotype of vascular cells relevant to aortopathy, with potential consequences on signaling, remodeling, and angiogenesis. The most recent findings and hypotheses concerning the multiple aspects of autophagy and of its dysregulation are summarized, both in general and in the context of the different vascular cell types and of TAA progression, with particular reference to BAV-related aortopathy.
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99
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Martinet W, Coornaert I, Puylaert P, De Meyer GRY. Macrophage Death as a Pharmacological Target in Atherosclerosis. Front Pharmacol 2019; 10:306. [PMID: 31019462 PMCID: PMC6458279 DOI: 10.3389/fphar.2019.00306] [Citation(s) in RCA: 131] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Accepted: 03/12/2019] [Indexed: 12/20/2022] Open
Abstract
Atherosclerosis is a chronic inflammatory disorder characterized by the gradual build-up of plaques within the vessel wall of middle-sized and large arteries. Over the past decades, treatment of atherosclerosis mainly focused on lowering lipid levels, which can be accomplished by the use of statins. However, some patients do not respond sufficiently to statin therapy and therefore still have a residual cardiovascular risk. This issue highlights the need for novel therapeutic strategies. As macrophages are implicated in all stages of atherosclerotic lesion development, they represent an important alternative drug target. A variety of anti-inflammatory strategies have recently emerged to treat or prevent atherosclerosis. Here, we review the canonical mechanisms of macrophage death and their impact on atherogenesis and plaque stability. Macrophage death is a prominent feature of advanced plaques and is a major contributor to necrotic core formation and plaque destabilization. Mechanisms of macrophage death in atherosclerosis include apoptosis, passive or accidental necrosis as well as secondary necrosis, a type of death that typically occurs when apoptotic cells are insufficiently cleared by neighboring cells via a phagocytic process termed efferocytosis. In addition, less-well characterized types of regulated necrosis in macrophages such as necroptosis, pyroptosis, ferroptosis, and parthanatos may occur in advanced plaques and are also discussed. Autophagy in plaque macrophages is an important survival pathway that protects against cell death, yet massive stimulation of autophagy promotes another type of death, usually referred to as autosis. Multiple lines of evidence indicate that a better insight into the different mechanisms of macrophage death, and how they mutually interact, will provide novel pharmacological strategies to resolve atherosclerosis and stabilize vulnerable, rupture-prone plaques.
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Affiliation(s)
- Wim Martinet
- Laboratory of Physiopharmacology, University of Antwerp, Antwerp, Belgium
| | - Isabelle Coornaert
- Laboratory of Physiopharmacology, University of Antwerp, Antwerp, Belgium
| | - Pauline Puylaert
- Laboratory of Physiopharmacology, University of Antwerp, Antwerp, Belgium
| | - Guido R Y De Meyer
- Laboratory of Physiopharmacology, University of Antwerp, Antwerp, Belgium
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100
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Tian H, Li Y, Kang P, Wang Z, Yue F, Jiao P, Yang N, Qin S, Yao S. Endoplasmic reticulum stress-dependent autophagy inhibits glycated high-density lipoprotein-induced macrophage apoptosis by inhibiting CHOP pathway. J Cell Mol Med 2019; 23:2954-2969. [PMID: 30746902 PMCID: PMC6433656 DOI: 10.1111/jcmm.14203] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 01/07/2018] [Accepted: 01/13/2019] [Indexed: 12/15/2022] Open
Abstract
This study was designed to explore the inductive effect of glycated high‐density lipoprotein (gly‐HDL) on endoplasmic reticulum (ER) stress‐C/EBP homologous protein (CHOP)‐mediated macrophage apoptosis and its relationship with autophagy. Our results showed that gly‐HDL caused macrophage apoptosis with concomitant activation of ER stress pathway, including nuclear translocation of activating transcription factor 6, phosphorylation of protein kinase‐like ER kinase (PERK) and eukaryotic translation initiation factor 2α, and CHOP up‐regulation, which were inhibited by 4‐phenylbutyric acid (PBA, an ER stress inhibitor) and the gene silencing of PERK and CHOP. Similar data were obtained from macrophages treated by HDL isolated from diabetic patients. Gly‐HDL induced macrophage autophagy as assessed by up‐regulation of beclin‐1, autophagy‐related gene 5 and microtubule‐associated protein one light chain 3‐II, which were depressed by PBA and PERK siRNA. Gly‐HDL‐induced apoptosis, PERK phosphorylation and CHOP up‐regulation were suppressed by rapamycin (an autophagy inducer), whereas aggravated by 3‐methyladenine (an autophagy inhibitor) and beclin‐1 siRNA. Administration of diabetic apoE−/− mice with rapamycin attenuated MOMA‐2 and CHOP up‐regulation and apoptosis in atherosclerotic lesions. These data indicate that gly‐HDL may induce macrophage apoptosis through activating ER stress‐CHOP pathway and ER stress mediates gly‐HDL‐induced autophagy, which in turn protects macrophages against apoptosis by alleviating CHOP pathway.
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Affiliation(s)
- Hua Tian
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of Atherosclerosis, Taishan Medical University, Taian, China
| | - Yanyan Li
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of Atherosclerosis, Taishan Medical University, Taian, China
| | - Panpan Kang
- Affiliated hospital of Chengde Medical University, Chengde Medical University, Chengde, China
| | - Zhichao Wang
- College of Nursing, Taishan Medical University, Taian, China
| | - Feng Yue
- Department of Endocrinology, Central Hospital of Taian, Taian, China
| | - Peng Jiao
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of Atherosclerosis, Taishan Medical University, Taian, China
| | - Nana Yang
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of Atherosclerosis, Taishan Medical University, Taian, China
| | - Shucun Qin
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of Atherosclerosis, Taishan Medical University, Taian, China
| | - Shutong Yao
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of Atherosclerosis, Taishan Medical University, Taian, China.,College of Basic Medical Sciences, Taishan Medical University, Taian, China
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