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Sun HJ, Ni ZR, Liu Y, Fu X, Liu SY, Hu JY, Sun QY, Li YC, Hou XH, Zhang JR, Zhu XX, Lu QB. Deficiency of neutral cholesterol ester hydrolase 1 (NCEH1) impairs endothelial function in diet-induced diabetic mice. Cardiovasc Diabetol 2024; 23:138. [PMID: 38664801 PMCID: PMC11046792 DOI: 10.1186/s12933-024-02239-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 04/18/2024] [Indexed: 04/28/2024] Open
Abstract
BACKGROUND Neutral cholesterol ester hydrolase 1 (NCEH1) plays a critical role in the regulation of cholesterol ester metabolism. Deficiency of NCHE1 accelerated atherosclerotic lesion formation in mice. Nonetheless, the role of NCEH1 in endothelial dysfunction associated with diabetes has not been explored. The present study sought to investigate whether NCEH1 improved endothelial function in diabetes, and the underlying mechanisms were explored. METHODS The expression and activity of NCEH1 were determined in obese mice with high-fat diet (HFD) feeding, high glucose (HG)-induced mouse aortae or primary endothelial cells (ECs). Endothelium-dependent relaxation (EDR) in aortae response to acetylcholine (Ach) was measured. RESULTS Results showed that the expression and activity of NCEH1 were lower in HFD-induced mouse aortae, HG-exposed mouse aortae ex vivo, and HG-incubated primary ECs. HG exposure reduced EDR in mouse aortae, which was exaggerated by endothelial-specific deficiency of NCEH1, whereas NCEH1 overexpression restored the impaired EDR. Similar results were observed in HFD mice. Mechanically, NCEH1 ameliorated the disrupted EDR by dissociating endothelial nitric oxide synthase (eNOS) from caveolin-1 (Cav-1), leading to eNOS activation and nitric oxide (NO) release. Moreover, interaction of NCEH1 with the E3 ubiquitin-protein ligase ZNRF1 led to the degradation of Cav-1 through the ubiquitination pathway. Silencing Cav-1 and upregulating ZNRF1 were sufficient to improve EDR of diabetic aortas, while overexpression of Cav-1 and downregulation of ZNRF1 abolished the effects of NCEH1 on endothelial function in diabetes. Thus, NCEH1 preserves endothelial function through increasing NO bioavailability secondary to the disruption of the Cav-1/eNOS complex in the endothelium of diabetic mice, depending on ZNRF1-induced ubiquitination of Cav-1. CONCLUSIONS NCEH1 may be a promising candidate for the prevention and treatment of vascular complications of diabetes.
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MESH Headings
- Animals
- Male
- Mice
- Aorta/enzymology
- Aorta/physiopathology
- Aorta/metabolism
- Aorta/drug effects
- Aorta/pathology
- Caveolin 1/metabolism
- Caveolin 1/deficiency
- Caveolin 1/genetics
- Cells, Cultured
- Diabetes Mellitus, Experimental/enzymology
- Diabetes Mellitus, Experimental/physiopathology
- Diet, High-Fat
- Endothelial Cells/enzymology
- Endothelial Cells/metabolism
- Endothelial Cells/drug effects
- Endothelium, Vascular/physiopathology
- Endothelium, Vascular/metabolism
- Endothelium, Vascular/enzymology
- Endothelium, Vascular/drug effects
- Mice, Inbred C57BL
- Mice, Knockout
- Nitric Oxide/metabolism
- Nitric Oxide Synthase Type III/metabolism
- Obesity/enzymology
- Obesity/physiopathology
- Obesity/metabolism
- Signal Transduction
- Sterol Esterase/metabolism
- Sterol Esterase/genetics
- Ubiquitination
- Vasodilation/drug effects
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Affiliation(s)
- Hai-Jian Sun
- Department of Physiology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China.
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing, 210009, China.
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China.
| | - Zhang-Rong Ni
- Department of Physiology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China
| | - Yao Liu
- Department of Cardiac Ultrasound, The Fourth Affiliated Hospital of Nanjing Medical University, Nanjing, 210000, Jiangsu, China
| | - Xiao Fu
- Department of Physiology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China
| | - Shi-Yi Liu
- Department of Physiology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China
| | - Jin-Yi Hu
- Department of Physiology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China
| | - Qing-Yi Sun
- Department of Physiology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China
| | - Yu-Chao Li
- Department of Physiology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China
| | - Xiao-Hui Hou
- Department of Cardiac Ultrasound, The Fourth Affiliated Hospital of Nanjing Medical University, Nanjing, 210000, Jiangsu, China
| | - Ji-Ru Zhang
- Department of Physiology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China.
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China.
| | - Xue-Xue Zhu
- Department of Physiology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China.
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China.
| | - Qing-Bo Lu
- Department of Endocrinology, Affiliated Hospital of Jiangnan University, Jiangnan University, Wuxi, 214125, China.
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Qian G, Adeyanju O, Cai D, Tucker TA, Idell S, Chen SY, Guo X. DOCK2 Promotes Atherosclerosis by Mediating the Endothelial Cell Inflammatory Response. THE AMERICAN JOURNAL OF PATHOLOGY 2024; 194:599-611. [PMID: 37838011 PMCID: PMC10988758 DOI: 10.1016/j.ajpath.2023.09.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/20/2023] [Accepted: 09/27/2023] [Indexed: 10/16/2023]
Abstract
The pathology of atherosclerosis, a leading cause of mortality in patients with cardiovascular disease, involves inflammatory phenotypic changes in vascular endothelial cells. This study explored the role of the dedicator of cytokinesis (DOCK)-2 protein in atherosclerosis. Mice with deficiencies in low-density lipoprotein receptor and Dock2 (Ldlr-/-Dock2-/-) and controls (Ldlr-/-) were fed a high-fat diet (HFD) to induce atherosclerosis. In controls, Dock2 was increased in atherosclerotic lesions, with increased intercellular adhesion molecule (Icam)-1 and vascular cell adhesion molecule (Vcam)-1, after HFD for 4 weeks. Ldlr-/-Dock2-/- mice exhibited significantly decreased oil red O staining in both aortic roots and aortas compared to that in controls after HFD for 12 weeks. In control mice and in humans, Dock2 was highly expressed in the ECs of atherosclerotic lesions. Dock2 deficiency was associated with attenuation of Icam-1, Vcam-1, and monocyte chemoattractant protein (Mcp)-1 in the aortic roots of mice fed HFD. Findings in human vascular ECs in vitro suggested that DOCK2 was required in TNF-α-mediated expression of ICAM-1/VCAM-1/MCP-1. DOCK2 knockdown was associated with attenuated NF-κB phosphorylation with TNF-α, partially accounting for DOCK2-mediated vascular inflammation. With DOCK2 knockdown in human vascular ECs, TNF-α-mediated VCAM-1 promoter activity was inhibited. The findings from this study suggest the novel concept that DOCK2 promotes the pathogenesis of atherosclerosis by modulating inflammation in vascular ECs.
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Affiliation(s)
- Guoqing Qian
- Department of Cellular and Molecular Biology, The University of Texas Health Science Center at Tyler, Tyler, Texas
| | - Oluwaseun Adeyanju
- Department of Cellular and Molecular Biology, The University of Texas Health Science Center at Tyler, Tyler, Texas
| | - Dunpeng Cai
- Department of Surgery, School of Medicine, The University of Missouri, Columbia, Missouri
| | - Torry A Tucker
- Department of Cellular and Molecular Biology, The University of Texas Health Science Center at Tyler, Tyler, Texas
| | - Steven Idell
- Department of Cellular and Molecular Biology, The University of Texas Health Science Center at Tyler, Tyler, Texas
| | - Shi-You Chen
- Department of Surgery, School of Medicine, The University of Missouri, Columbia, Missouri; The Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, Missouri; Department of Physiology and Pharmacology, University of Georgia, Athens, Georgia.
| | - Xia Guo
- Department of Cellular and Molecular Biology, The University of Texas Health Science Center at Tyler, Tyler, Texas; Department of Physiology and Pharmacology, University of Georgia, Athens, Georgia.
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3
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Ghatage T, Singh S, Mandal K, Dhar A. Co-activation of Mas and pGCA receptors suppresses Endothelin-1-induced endothelial dysfunction via nitric oxide/cGMP system. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167110. [PMID: 38462025 DOI: 10.1016/j.bbadis.2024.167110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/20/2024] [Accepted: 02/26/2024] [Indexed: 03/12/2024]
Abstract
BACKGROUND The aortic endothelium is crucial in preserving vascular tone through endothelium-derived vasodilators and vasoconstrictors. Dysfunction in the endothelium is an early indicator of cardiovascular diseases. Our study explores the therapeutic potential of a dual-acting peptide (DAP) to co-activate Mas and pGCA receptors and restore the balance between vasodilators and vasoconstrictors on endothelial dysfunction in DOCA-salt-induced hypertensive rats. METHODS DOCA-salt was administered to male wistar rats to induce hypertension, and various parameters, including blood pressure (BP), water intake and body weight were monitored. DAP, Ang1-7, BNP, and losartan were administered to hypertensive rats for three weeks. Histological analysis and isometric tension studies were carried out to assess endothelial function. In addition to this, we used primary aortic endothelial cells for detailed mechanistic investigations. RESULTS DOCA-salt administration significantly elevated systolic, diastolic, mean arterial BP, and water intake whereas, downregulated the gene expression of Mas and pGCA receptors. However, DAP co-administration attenuated BP increase, upregulated the gene expression of Mas and pGCA receptors, normalized serum and urinary parameters, and effectively reduced fibrosis, inflammation, and vascular calcification. Notably, DAP outperformed the standard drug, Losartan. Our findings indicate that DAP restores aortic function by balancing the NO and ET1-induced pathways. CONCLUSION Co-activating Mas and pGCA receptors with DAP mitigates vascular damage and enhances endothelial function, emphasizing its potential to maintain a delicate balance between vasodilatory NO and vasoconstrictor ET1 in endothelial dysfunction.
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Affiliation(s)
- Trupti Ghatage
- Department of Pharmacy, Birla Institute of Technology and Sciences (BITS) Pilani, Hyderabad Campus, Jawahar Nagar, Shameerpet, Hyderabad, Telangana 500078, India
| | - Sameer Singh
- Tata Institute of Fundamental Research Hyderabad, Hyderabad, Telangana 500046, India
| | - Kalyaneswar Mandal
- Tata Institute of Fundamental Research Hyderabad, Hyderabad, Telangana 500046, India
| | - Arti Dhar
- Department of Pharmacy, Birla Institute of Technology and Sciences (BITS) Pilani, Hyderabad Campus, Jawahar Nagar, Shameerpet, Hyderabad, Telangana 500078, India.
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4
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Wang X, Zhu L, Liu J, Ma Y, Qiu C, Liu C, Gong Y, Yuwen Y, Guan G, Zhang Y, Pan S, Wang J, Liu Z. Palmitic acid in type 2 diabetes mellitus promotes atherosclerotic plaque vulnerability via macrophage Dll4 signaling. Nat Commun 2024; 15:1281. [PMID: 38346959 PMCID: PMC10861578 DOI: 10.1038/s41467-024-45582-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 01/26/2024] [Indexed: 02/15/2024] Open
Abstract
Patients with Type 2 Diabetes Mellitus are increasingly susceptible to atherosclerotic plaque vulnerability, leading to severe cardiovascular events. In this study, we demonstrate that elevated serum levels of palmitic acid, a type of saturated fatty acid, are significantly linked to this enhanced vulnerability in patients with Type 2 Diabetes Mellitus. Through a combination of human cohort studies and animal models, our research identifies a key mechanistic pathway: palmitic acid induces macrophage Delta-like ligand 4 signaling, which in turn triggers senescence in vascular smooth muscle cells. This process is critical for plaque instability due to reduced collagen synthesis and deposition. Importantly, our findings reveal that macrophage-specific knockout of Delta-like ligand 4 in atherosclerotic mice leads to reduced plaque burden and improved stability, highlighting the potential of targeting this pathway. These insights offer a promising direction for developing therapeutic strategies to mitigate cardiovascular risks in patients with Type 2 Diabetes Mellitus.
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Affiliation(s)
- Xiqiang Wang
- Department of Cardiology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi Province, 710068, China
| | - Ling Zhu
- Department of Cardiology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi Province, 710068, China
| | - Jing Liu
- Department of Cardiology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi Province, 710068, China
| | - Yanpeng Ma
- Department of Cardiology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi Province, 710068, China
| | - Chuan Qiu
- Division of Bioinformatics and Genomics, Deming Department of Medicine, Tulan Center of Biomedical Informatics and Genomics, Tulane University, New Orleans, LA, 70112, USA
| | - Chengfeng Liu
- Department of Cardiology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi Province, 710068, China
| | - Yangchao Gong
- Department of Cardiology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi Province, 710068, China
| | - Ya Yuwen
- Department of Cardiology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi Province, 710068, China
- Medical School, Xizang Minzu University, Xianyang, Shaanxi Province, 712000, China
| | - Gongchang Guan
- Department of Cardiology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi Province, 710068, China
| | - Yong Zhang
- Department of Cardiology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi Province, 710068, China.
| | - Shuo Pan
- Department of Cardiology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi Province, 710068, China.
| | - Junkui Wang
- Department of Cardiology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi Province, 710068, China.
| | - Zhongwei Liu
- Department of Cardiology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi Province, 710068, China.
- Affiliated Shaanxi Provincial People's Hospital, Medical Research Institute, Northwestern Polytechnical University, Xi'an, Shaanxi Province, 710072, China.
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5
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Liu L, Yao C, Song Z. MicroRNA-195-5p Attenuates Pregnancy-Induced Hypertension by Inhibiting Oxidative Stress via OTX1/MAPK Signaling Pathway. Biochem Genet 2024:10.1007/s10528-023-10612-5. [PMID: 38177835 DOI: 10.1007/s10528-023-10612-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 11/18/2023] [Indexed: 01/06/2024]
Abstract
Pregnancy-induced hypertension (PIH) is a hypertensive disorder during pregnancy and can induce perinatal death of human infants. MicroRNA (miR)-195-5p was validated to display low expression in severe preeclampsia placentas, but the role of miR-195-5p in pregnancy-induced hypertension (PIH) has not been investigated. The study emphasized on the functions and mechanism of miR-195-5p in PIH. A reduced uterine perfusion pressure (RUPP) rat model was established to mimic PIH in vivo. Adenovirus (Ad)-miR-195-5p agomir and/or Ad-OTX1 were further injected into some model rats. RT-qPCR was conducted to assess the expression of miR-195-5p and orthodenticle homeobox 1 (OTX1) in rat placental tissues, the isolated aortic endothelial cells (AECs), and in serum samples of PIH patients. Western blot analysis was implemented to measure the protein levels of OTX1, VEGFA, and key factors involved in the MAPK signaling pathway. The concentrations of oxidative stress markers (superoxide dismutase, catalase, and lipid hydroperoxide) in AECs and placental tissues of RUPP rats were measured by corresponding kits. The binding relation between miR-195-5p and OTX1 was verified using the dual-luciferase reporter assay. Hematoxylin-eosin staining was conducted to evaluate the pathological features of rat placental tissues. MiR-195-5p was downregulated, while OTX1 was upregulated in rat placental tissues and human serum samples of PIH patients. MiR-195-5p could target OTX1 and inversely regulate OTX1 expression in AECs and rat placental tissues. In addition, miR-195-5p can negatively regulate VEGFA level. Furthermore, miR-195-5p inactivates oxidative stress and the MAPK signaling by downregulating OTX1 in AECs. In vivo experiments revealed that OTX1 overexpression reversed the protective effect of miR-195-5p overexpression on placental damage and oxidative stress. MiR-195-5p alleviates PIH by inhibiting oxidative stress via targeting OTX1 and inactivating MAPK signaling.
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Affiliation(s)
- Lili Liu
- Hospital Infection Management Division, Maternal and Child Health Hospital of Tangshan, Tangshan, 063000, China
| | - Chunfeng Yao
- Department of Obstetrics Gynecology, Tangshan Workers' Hospital, Tangshan, 063000, China
| | - Zhihui Song
- Department of Gynecology and Obstetrics, Maternal and Child Health Hospital of Tangshan, No. 1 Hetai Road, Lunan District, Tangshan, 063000, China.
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6
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Gong J, Sun P, Li L, Zou Z, Wu Q, Sun L, Li H, Gu Z, Su L. Heat stress suppresses MnSOD expression via p53-Sp1 interaction and induces oxidative stress damage in endothelial cells: Protective effects of MitoQ10 and Pifithrin-α. Heliyon 2023; 9:e22805. [PMID: 38125505 PMCID: PMC10730713 DOI: 10.1016/j.heliyon.2023.e22805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 11/20/2023] [Accepted: 11/20/2023] [Indexed: 12/23/2023] Open
Abstract
Aim To investigate the mechanism of p53-mediated suppression of heat stress-induced oxidative stress damage by manganese superoxide dismutase (MnSOD) in endothelial cells (ECs). Methods Primary ECs isolated from mouse aortas were used to examine the effects of heat stress on vascular ECs viability and apoptosis. We measured MnSOD expression, reactive oxygen species (ROS) production, p53 expression, viability, and apoptosis of heat stress-induced ECs. We also tested the protective effects of MitoQ10, a mitochondrial-targeted antioxidant, and Pifithrin-α, a p53 inhibitor, in ECs from a mouse model of heat stroke. Results Heat stress increased cellular apoptosis, ROS production, and p53 expression, while reducing cellular viability and MnSOD expression in ECs. We also showed that the suppression of MnSOD expression by heat stress in ECs was mediated by interactions between p53 and Sp1. Furthermore, MitoQ10 and Pifithrin-α alleviated heat stress-induced oxidative stress and apoptosis in ECs. Conclusion Our results revealed that p53-mediated MnSOD downregulation is a key mechanism for heat stress-induced oxidative stress damage in ECs and indicated that MitoQ10 and Pifithrin-α could be potential therapeutic agents for heat stroke.
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Affiliation(s)
- Jian Gong
- Department of Critical Care Medicine, The First School of Clinical Medicine, Southern Medical University (General Hospital of Southern Theater Command of PLA), Guangzhou, 510515, China
- Department of Intensive Care Medicine, The Third People's Hospital of Longgang District, Shenzhen, 518115, China
| | - Peipei Sun
- Department of Intensive Care Medicine, The Third People's Hospital of Longgang District, Shenzhen, 518115, China
| | - Li Li
- Department of Treatment Center for Traumatic Injuries, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, China
- Academy of Orthopedics, Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degenerative Diseases, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, China
| | - Zhimin Zou
- Department of Treatment Center for Traumatic Injuries, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, China
- Academy of Orthopedics, Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degenerative Diseases, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, China
| | - Qihua Wu
- Department of Intensive Care Medicine, The Third People's Hospital of Longgang District, Shenzhen, 518115, China
| | - Liyun Sun
- Department of Intensive Care Medicine, The Third People's Hospital of Longgang District, Shenzhen, 518115, China
| | - Hui Li
- Department of Critical Care Medicine, The First School of Clinical Medicine, Southern Medical University (General Hospital of Southern Theater Command of PLA), Guangzhou, 510515, China
- Key Laboratory of Hot Zone Trauma Care and Tissue Repair of PLA, Guangzhou, 510515, China
| | - Zhengtao Gu
- Department of Treatment Center for Traumatic Injuries, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, China
- Academy of Orthopedics, Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degenerative Diseases, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, China
| | - Lei Su
- Department of Critical Care Medicine, The First School of Clinical Medicine, Southern Medical University (General Hospital of Southern Theater Command of PLA), Guangzhou, 510515, China
- Key Laboratory of Hot Zone Trauma Care and Tissue Repair of PLA, Guangzhou, 510515, China
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Xu J, Ma H, Shi L, Zhou H, Cheng Y, Tong J, Meng B, Xu X, He K, Ding S, Zhang J, Yue L, Xiang G. Inflammatory Cell-Derived MYDGF Attenuates Endothelial LDL Transcytosis to Protect Against Atherogenesis. Arterioscler Thromb Vasc Biol 2023; 43:e443-e467. [PMID: 37767706 DOI: 10.1161/atvbaha.123.319905] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023]
Abstract
BACKGROUND Inflammation contributes to the pathogenesis of atherosclerosis. But little is known about the potential benefits of inflammatory cells to atherosclerosis. The aim of this study was to investigate the function of inflammatory cells/endothelium axis and determine whether and how inflammatory cell-derived MYDGF (myeloid-derived growth factor) inhibited endothelial LDL (low-density lipoprotein) transcytosis. METHODS In in vivo experiments, both loss- and gain-of-function strategies were used to evaluate the effect of inflammatory cell-derived MYDGF on LDL transcytosis. We generated monocyte/macrophage-targeted MYDGF-null mice on an Ldlr (LDL receptor)-/- background in the loss-of-function strategy and restored the inflammatory cell-derived MYDGF by bone marrow transplantation and inflammatory cell-specific overexpression of MYDGF mice model in the gain-of-function strategy. In in vitro experiments, coculture experiments between primary mouse aortic endothelial cells and macrophages and mouse aortic endothelial cells supplemented with or without recombinant MYDGF were conducted. RESULTS Inflammatory cell-derived MYDGF deficiency aggravated endothelial LDL transcytosis, drove LDL uptake by artery wall, and thus exacerbated atherosclerosis in vivo. Inflammatory cell-derived MYDGF restoration by bone marrow transplantation and inflammatory cell MYDGF overexpression alleviated LDL transport across the endothelium, prevented LDL accumulation in the subendothelial space, and subsequently ameliorated atherosclerosis in vivo. Furthermore, in the in vitro study, macrophages isolated from MYDGF+/+ mice and recombinant MYDGF attenuated LDL transcytosis and uptake in mouse aortic endothelial cells. Mechanistically, MYDGF inhibited MAP4K4 (mitogen-activated protein kinase kinase kinase kinase isoform 4) phosphorylation, enhanced activation of Akt (protein kinase B)-1, and diminished the FoxO (forkhead box O) 3a signaling cascade to exert protective effects of MYDGF on LDL transcytosis and atherosclerosis. CONCLUSIONS The findings support a role for inflammatory cell-derived MYDGF served as a cross talk factor between inflammatory cells and endothelial cells that inhibits LDL transcytosis across endothelium. MYDGF may become a novel therapeutic drug for atherosclerosis, and the beneficial effects of inflammatory cell in atherosclerosis deserve further attention.
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Affiliation(s)
- Jinling Xu
- Department of Endocrinology, General Hospital of Central Theater Command, Wuhan, China (J.X., L.S., Y.C., J.T., B.M., X.X., J.Z., L.Y., G.X.)
- The First School of Clinical Medicine, Southern Medical University, Guangdong, China (J.X., L.S., Y.C., J.T., K.H., S.D., G.X.)
| | - Huaxing Ma
- Department of Hepatobiliary Surgery, The Affiliated Hospital of Guizhou Medical University, China (H.M.)
| | - Lingfeng Shi
- Department of Endocrinology, General Hospital of Central Theater Command, Wuhan, China (J.X., L.S., Y.C., J.T., B.M., X.X., J.Z., L.Y., G.X.)
- The First School of Clinical Medicine, Southern Medical University, Guangdong, China (J.X., L.S., Y.C., J.T., K.H., S.D., G.X.)
| | - Hui Zhou
- Department of General Surgery, The Third Xiangya Hospital, Central South University, Hunan, China (H.Z.)
| | - Yangyang Cheng
- Department of Endocrinology, General Hospital of Central Theater Command, Wuhan, China (J.X., L.S., Y.C., J.T., B.M., X.X., J.Z., L.Y., G.X.)
- Department of Hepatobiliary Surgery, The Affiliated Hospital of Guizhou Medical University, China (H.M.)
| | - Jiayue Tong
- Department of Endocrinology, General Hospital of Central Theater Command, Wuhan, China (J.X., L.S., Y.C., J.T., B.M., X.X., J.Z., L.Y., G.X.)
- The First School of Clinical Medicine, Southern Medical University, Guangdong, China (J.X., L.S., Y.C., J.T., K.H., S.D., G.X.)
| | - Biying Meng
- Department of Endocrinology, General Hospital of Central Theater Command, Wuhan, China (J.X., L.S., Y.C., J.T., B.M., X.X., J.Z., L.Y., G.X.)
| | - Xiaoli Xu
- Department of Endocrinology, General Hospital of Central Theater Command, Wuhan, China (J.X., L.S., Y.C., J.T., B.M., X.X., J.Z., L.Y., G.X.)
| | - Kaiyue He
- The First School of Clinical Medicine, Southern Medical University, Guangdong, China (J.X., L.S., Y.C., J.T., K.H., S.D., G.X.)
| | - Sheng Ding
- The First School of Clinical Medicine, Southern Medical University, Guangdong, China (J.X., L.S., Y.C., J.T., K.H., S.D., G.X.)
| | - Jiajia Zhang
- Department of Endocrinology, General Hospital of Central Theater Command, Wuhan, China (J.X., L.S., Y.C., J.T., B.M., X.X., J.Z., L.Y., G.X.)
| | - Ling Yue
- Department of Endocrinology, General Hospital of Central Theater Command, Wuhan, China (J.X., L.S., Y.C., J.T., B.M., X.X., J.Z., L.Y., G.X.)
| | - Guangda Xiang
- Department of Endocrinology, General Hospital of Central Theater Command, Wuhan, China (J.X., L.S., Y.C., J.T., B.M., X.X., J.Z., L.Y., G.X.)
- The First School of Clinical Medicine, Southern Medical University, Guangdong, China (J.X., L.S., Y.C., J.T., K.H., S.D., G.X.)
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8
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Ghatage T, Singh S, Mandal K, Dhar A. MasR and pGCA receptor activation protects primary vascular smooth muscle cells and endothelial cells against oxidative stress via inhibition of intracellular calcium. J Cell Biochem 2023. [PMID: 37210727 DOI: 10.1002/jcb.30422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 04/05/2023] [Accepted: 04/25/2023] [Indexed: 05/23/2023]
Abstract
Cardiovascular diseases (CVDs) are associated with vascular smooth muscle cell (VSMC) and endothelial cell (EC) damage. Angiotensin1-7 (Ang1-7) and B-type natriuretic peptide (BNP) are responsible for vasodilation and regulation of blood flow. These protective effects of BNP are primarily mediated by the activation of sGCs/cGMP/cGKI pathway. Conversely, Ang1-7 inhibits Angiotensin II-induced contraction and oxidative stress via Mas receptor activation. Thus, the aim of the study was to determine the effect of co-activation of MasR and particulate guanylate cyclase receptor (pGCA) pathways by synthesized novel peptide (NP) in oxidative stress-induced VSMCs and ECs. MTT and Griess reagent assay kits were used for the standardization of the oxidative stress (H2 O2 ) induced model in VSMCs. The expression of targeted receptors in VSMC was done by RT-PCR and Western blot analysis. Protective effect of NP in VSMC and EC was determined by immunocytochemistry, FACS analysis, and Western blot analysis. Underlying mechanisms of EC-dependent VSMC relaxation were done by determining downstream mRNA gene expression and intracellular calcium imaging of cells. Synthesized NP significantly improved oxidative stress-induced injury in VSMCs. Remarkably, the actions of NP were superior to that of the Ang1-7 and BNP alone. Further, a mechanistic study in VSMC and EC suggested the involvement of upstream mediators of calcium inhibition for the therapeutic effect. NP is reported to possess vascular protective activities and is also involved in the improvement of endothelial damage. Moreover, it is highly effective than that of individual peptides BNP and Ang1-7 and therefore it may represent a promising strategy for CVDs.
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Affiliation(s)
- Trupti Ghatage
- Department of Pharmacy, Birla Institute of Technology and Sciences (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana, India
| | - Sameer Singh
- TIFR Centre for Interdisciplinary Sciences, Tata Institute of Fundamental Research, Hyderabad, India
| | - Kalyaneswar Mandal
- TIFR Centre for Interdisciplinary Sciences, Tata Institute of Fundamental Research, Hyderabad, India
| | - Arti Dhar
- Department of Pharmacy, Birla Institute of Technology and Sciences (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana, India
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Yuan X, Bhat OM, Zou Y, Zhang Y, Li PL. Contribution of Hepatic Steatosis-Intensified Extracellular Vesicle Release to Aggravated Inflammatory Endothelial Injury in Liver-Specific Asah1 Gene Knockout Mice. THE AMERICAN JOURNAL OF PATHOLOGY 2023; 193:493-508. [PMID: 36638912 PMCID: PMC10123522 DOI: 10.1016/j.ajpath.2022.12.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 12/05/2022] [Accepted: 12/28/2022] [Indexed: 01/12/2023]
Abstract
To study the mechanism by which nonalcoholic fatty liver disease (NAFLD) contributes to vascular endothelial Nod-like receptor pyrin domain 3 (NLRP3) inflammasome activation and neointima hyperplasia, NAFLD was established in high-fat diet (HFD)-treated Asah1fl/fl/Albcre (liver-specific deletion of the acid ceramidase gene Asah1) mice. Compared with Asah1 flox [Asah1fl/fl/wild type (WT)] and wild-type (WT/WT) mice, Asah1fl/fl/Albcre mice exhibited significantly enhanced ceramide levels and lipid deposition on HFD in the liver. Moreover, Asah1fl/fl/Albcre mice showed enhanced expression of extracellular vesicle (EV) markers, CD63 and annexin II, but attenuated lysosome-multivesicular body fusion. All these changes were accompanied by significantly increased EV counts in the plasma. In a mouse model of neointima hyperplasia, liver-specific deletion of the Asah1 gene enhanced HFD-induced neointima proliferation, which was associated with increased endothelial NLRP3 inflammasome formation and activation and more severe endothelial damage. The EVs isolated from plasma of Asah1fl/fl/Albcre mice on HFD were found to markedly enhance NLRP3 inflammasome formation and activation in primary cultures of WT/WT endothelial cells compared with those isolated from WT/WT mice or normal diet-treated Asah1fl/fl/Albcre mice. These results suggest that the acid ceramidase/ceramide signaling pathway controls EV release from the liver, and its deficiency aggravates NAFLD and intensifies hepatic EV release into circulation, which promotes endothelial NLRP3 inflammasome activation and consequent neointima hyperplasia in the mouse carotid arteries.
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Affiliation(s)
- Xinxu Yuan
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, School of Medicine, Richmond, Virginia
| | - Owais M Bhat
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, School of Medicine, Richmond, Virginia
| | - Yao Zou
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, School of Medicine, Richmond, Virginia
| | - Yang Zhang
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas.
| | - Pin-Lan Li
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, School of Medicine, Richmond, Virginia.
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10
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Hu X, Xue Y, Liu D, Zhang J, Wang T, Wu Z, Lei W. Effects of material nano-topography on the angiogenesis of type H vessels: Size dependence, cell heterogeneity and intercellular communication. BIOMATERIALS ADVANCES 2023; 147:213307. [PMID: 36746099 DOI: 10.1016/j.bioadv.2023.213307] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 12/31/2022] [Accepted: 01/17/2023] [Indexed: 01/22/2023]
Abstract
Type H vessel, a vascular subtype in bone, is a critical regulator of osteogenesis, but how material properties affect this organ-specific vessel remains unknown. Here, titania nanotubes were fabricated on bone implant surface to investigate the effects of nano-topography on type H vessels. In vivo, surface nanotubes with 20-100 nm diameters promoted the angiogenesis of type H vessels and bone regeneration in mouse femurs to different extents, with the best effects induced by 70 nm diameter. In vitro, bone-specific endothelial cells (BECs) and artery endothelial cells (AECs) presented significantly different behaviors on the same material. Nanotubes with 20 nm small diameters significantly improved the adhesion, proliferation, type H differentiation of BECs and their paracrine function to regulate pre-osteoblasts (POBs), possibly via binding integrin β1 on the cell membrane, but these effects weakened when tube diameter increased, which conflicted with the results in vivo. Further study suggested that the better in vivo effects by larger diameters of 70-100 nm might be exerted indirectly through remodeling the regulation from POBs to BECs, highlighting the underappreciated indirect bio-effects of materials via intercellular communication. These suggest that nanoscale material topography makes significant impact on the angiogenesis of type H vessels, directly via binding integrins on the cell membrane of BECs and indirectly via modulating the regulation from osteoblastic cells to BECs, both in a size-dependent manner. Cells of the same type but from different tissues may show different responses to the same material, thus material properties should be tailored to the specific cell population. In research on material-tissue interactions, conclusions from in vitro experiments exposing a single type of cell to material might deviate from the truth in vivo, because materials may indirectly influence the targeted cells through modulating intercellular communication. These provide new insights into material-tissue interactions.
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Affiliation(s)
- Xiaofan Hu
- Department of Orthopedics, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
| | - Yumeng Xue
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an 710072, China
| | - Daming Liu
- Department of Orthopedics, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
| | - Jianming Zhang
- Department of Orthopedics, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
| | - Tianji Wang
- Department of Orthopedics, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
| | - Zixiang Wu
- Department of Orthopedics, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China.
| | - Wei Lei
- Department of Orthopedics, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China.
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Wang J, Liu Z, Lu J, Zou J, Ye W, Li H, Gao S, Liu P. SIRT6 regulates endothelium-dependent relaxation by modulating nitric oxide synthase 3 (NOS3). Biochem Pharmacol 2023; 209:115439. [PMID: 36720357 DOI: 10.1016/j.bcp.2023.115439] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 12/14/2022] [Accepted: 01/25/2023] [Indexed: 01/31/2023]
Abstract
BACKGROUND AND OBJECTIVE SIRT6, an NAD+-dependent protein deacetylase, is a key modulator of various biological functions. However, the precise role of SIRT6 in the regulation of endothelial function is still not fully understood. The current study sought to determine whether SIRT6 modulates NOS3 activity to regulate endothelium-dependent relaxations in the arterial wall and, if so, to investigate the potential underlying mechanism (s). METHODS ApoE-/- mice and Sprague-Dawley rats had their aortic rings isolated for a vascular reactivity assay. Endothelial cells were cultured before qRT-PCR, western blot, immunoprecipitation, NO bioavailability, and acetylation/deacetylation assays were performed. RESULTS SIRT6 expression was significantly reduced in the aorta of ApoE-/- mice fed a high-cholesterol diet, as was endothelium-dependent relaxation. Endothelial dysfunction could be corrected by delivering a SIRT6 overexpression construct via an adenovirus. In cultured endothelial cells, siRNA knockdown of SIRT6 decreased NOS3 catalytic activity, whereas adenoviral overexpression of SIRT6 increased NOS3-derived nitric oxide (NO) generation. SIRT6 interacted with and deacetylated human NOS3 at lysines 494, 497, and 504 of the calmodulin-binding domain, allowing calmodulin to bind to NOS3 and stimulate NOS3 activity. SIRT6 knockdown also reduced NOS3 expression by inhibiting Kruppel-Like Factor 2 (KLF2). CONCLUSIONS We identified SIRT6 as a new regulator of the activity of NOS3, with functional implications for endothelial-dependent relaxation.
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Affiliation(s)
- Jiaojiao Wang
- College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China; National-Local Joint Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Zhiping Liu
- College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China; National-Local Joint Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
| | - Jing Lu
- National-Local Joint Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Jiami Zou
- College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China
| | - Weile Ye
- College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China
| | - Hong Li
- National-Local Joint Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; Department of Medical Biotechnology, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Si Gao
- National-Local Joint Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; School of Medicine, Guangxi University of Science and Technology, No. 257 Liu-shi Road, Yufeng District, Liuzhou 545005, China
| | - Peiqing Liu
- National-Local Joint Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
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12
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Volkova E, Procell L, Kong L, Santhanam L, Gerecht S. Vascular stiffening in aging females with a hypertension-induced HIF2A gain-of-function mutation. Bioeng Transl Med 2023; 8:e10403. [PMID: 36925716 PMCID: PMC10013765 DOI: 10.1002/btm2.10403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 08/23/2022] [Accepted: 08/28/2022] [Indexed: 11/09/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) is more prevalent in females than males; the causes of this sex difference have not been adequately explored. Gain-of-function (GOF) mutations in hypoxia-inducible factor 2α (HIF2A) lead to PAH and thrombotic consequences in patients and mice. Additionally, multiple emerging studies suggest that elevated systemic arterial stiffening (SAS) occurs in PAH; this could have critical prognostic value. Here, we utilized a HIF2A GOF mouse model to determine how SAS can be used as a prognosticator in sex-divergent PAH. We analyzed survival, vascular mechanics, and vascular phenotypes in young adult (8-16 weeks) and middle age (9-12 months) Hif2a GOF mice. We find that Hif2a heterozygous (HT) female mice, but not Hif2a HT male mice, exhibit poor survival, SAS upon aging, and decreased ability to withstand repeated physiological strain. Hif2a HT female mice also display thickening of the adventitial intima and increased collagen I and collagen III in all layers of the thoracic aorta. Our findings demonstrate differing PAH progression in female and male Hif2a GOF mice. Specifically, alterations in extracellular matrix (ECM) content led to vascular stiffening in aged females, resulting in poor survival. Moreover, we show that SAS emerges early in mice with PAH by coupling studies of vascular mechanics and analyzing vascular structure and composition. Importantly, we present a model for assessing sex differences in hereditary PAH progression and sex-specific prognosis, proposing that aortic stiffening can be used to prognosticate future poor outcomes in PAH.
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Affiliation(s)
- Eugenia Volkova
- Department of Chemical and Biomolecular EngineeringJohns Hopkins UniversityBaltimoreMarylandUSA
- Institute for NanoBioTechnology, Johns Hopkins UniversityBaltimoreMarylandUSA
| | - Linda Procell
- Department of Chemical and Biomolecular EngineeringJohns Hopkins UniversityBaltimoreMarylandUSA
| | - Lingyang Kong
- Department of Chemical and Biomolecular EngineeringJohns Hopkins UniversityBaltimoreMarylandUSA
| | - Lakshmi Santhanam
- Department of Chemical and Biomolecular EngineeringJohns Hopkins UniversityBaltimoreMarylandUSA
- Department of Anesthesiology and Critical Care MedicineJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Biomedical EngineeringJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Sharon Gerecht
- Department of Chemical and Biomolecular EngineeringJohns Hopkins UniversityBaltimoreMarylandUSA
- Institute for NanoBioTechnology, Johns Hopkins UniversityBaltimoreMarylandUSA
- Department of Biomedical EngineeringJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Biomedical EngineeringDuke UniversityDurhamNorth CarolinaUSA
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13
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Li G, Jiang X, Liang X, Hou Y, Zang J, Zhu B, Jia C, Niu K, Liu X, Xu X, Jiang R, Wang B. BAP31 regulates the expression of ICAM-1/VCAM-1 via MyD88/NF-κB pathway in acute lung injury mice model. Life Sci 2023; 313:121310. [PMID: 36549351 DOI: 10.1016/j.lfs.2022.121310] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 12/13/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022]
Abstract
AIMS The cell adhesion molecules (CAMs) that mediate neutrophil-endothelium cell adhesion are deeply involved in the pathogenesis of acute lung injury (ALI). B-cell receptor associated protein 31 (BAP31) has been reported to engage in the expression of some CAMs. This study was undertaken to explore whether BAP31 in endotheliocyte affects the pathological process of ALI by regulating CAMs, and its possible mechanism. MAIN METHODS Our study used the shBAP31 endothelium cell lines and endothelial-specific BAP31 conditional knockdown mice constructed via Cre/loxP system. Hematoxylin and eosin staining was used to observe the histopathological manifestations. The adhesion of neutrophils to vascular wall was examined by intravital microscopy. The nuclear translocation of NF-κB was observed by immunofluorescence staining assay. Flow cytometric, real-time polymerase chain reaction and Western blot assay were performed to determine the expression of CAMs and key proteins in MyD88/NF-κB-related signaling pathway. Luciferase reporter and chromatin immunoprecipitation assay were analyzed for transcriptional activity of ICAM-1 and VCAM-1. KEY FINDINGS Mechanistic investigations indicated that endothelium-specific BAP31 depletion dramatically reduced the capacity of neutrophils adherence to endothelial cells (ECs), which was mainly attributed to the significant downregulation of ICAM-1 (p < 0.05) and VCAM-1 (p < 0.05) expression. Interestingly, BAP31 knockdown apparently deactivated MyD88/TRAF6-mediated TAK1/NF-κB and PI3K/Akt signaling cascades, resulting in the inhibition of NF-κB activation and nuclear translocation. SIGNIFICANCE Our data furnished convincing evidence that BAP31 deficiency performs a mitigative effect on ALI by decreasing neutrophils-ECs adhesion. These findings identified BAP31 as a promising protein for regulating the pathogenesis process of ALI.
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Affiliation(s)
- Guoxun Li
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Xiaohan Jiang
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Xiaoyu Liang
- Southern Methodist University, Dallas, TX 75275, USA
| | - Yue Hou
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Jingnan Zang
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Benzhi Zhu
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Congcong Jia
- Liaoning Provincial Key Laboratory for Research on the Pathogenic Mechanisms of Neurological Diseases, The First Affiliated Hospital, Dalian Medical University, Dalian 116011, China
| | - Kunwei Niu
- Department of Hepatobiliary Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle Road, Xi'an, Shaanxi 710032, China
| | - Xia Liu
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Xiaoli Xu
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Rui Jiang
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China.
| | - Bing Wang
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China.
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Pang ZD, Sun X, Bai RY, Han MZ, Zhang YJ, Wu W, Zhang Y, Lai BC, Zhang Y, Wang Y, Du XJ, Deng XL. YAP-galectin-3 signaling mediates endothelial dysfunction in angiotensin II-induced hypertension in mice. Cell Mol Life Sci 2023; 80:38. [PMID: 36629913 PMCID: PMC11072047 DOI: 10.1007/s00018-022-04623-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 10/29/2022] [Accepted: 11/03/2022] [Indexed: 01/12/2023]
Abstract
BACKGROUND Vascular endothelial dysfunction is regarded as an early event of hypertension. Galectin-3 (Gal-3) is known to participate in various pathological processes. Whilst previous studies showed that inhibition of Gal-3 effectively ameliorates angiotensin II (Ang II)-induced atherosclerosis or hypertension, it remains unclear whether Ang II regulates Gal-3 expression and actions in vascular endothelium. METHODS Using techniques of molecular biology and myograph, we investigated Ang II-mediated changes in Gal-3 expression and activity in thoracic aortas and mesenteric arteries from wild-type and Gal-3 gene deleted (Gal-3-/-) mice and cultured endothelial cells. RESULTS The serum level of Gal-3 was significantly higher in hypertensive patients or in mice with chronic Ang II-infusion. Ang II infusion to wild-type mice enhanced Gal-3 expression in the aortic and mesenteric arteries, elevated systolic blood pressure and impaired endothelium-dependent relaxation of the thoracic aortas and mesenteric arteries, changes that were abolished in Gal-3-/- mice. In human umbilical vein endothelial cells, Ang II significantly upregulated Gal-3 expression by promoting nuclear localization of Yes-associated protein (YAP) and its interaction with transcription factor Tead1 with enhanced YAP/Tead1 binding to Gal-3 gene promoter region. Furthermore, Gal-3 deletion augmented the bioavailability of nitric oxide, suppressed oxidative stress, and alleviated inflammation in the thoracic aorta of Ang II-infused mice or endothelial cells exposed to Ang II. CONCLUSIONS Our results demonstrate for the first time that Ang II upregulates Gal-3 expression via increment in YAP nuclear localization in vascular endothelium, and that Gal-3 mediates endothelial dysfunction contributing to the development of hypertension.
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Affiliation(s)
- Zheng-Da Pang
- Department of Physiology and Pathophysiology, Cardiovascular Research Centre, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, Shaanxi, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, Shaanxi, China
| | - Xia Sun
- Department of Physiology and Pathophysiology, Cardiovascular Research Centre, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, Shaanxi, China
- School of Basic and Medical Sciences, Xi'an Medical University, 1 Xinwang Road, Xi'an, 710021, Shaanxi, China
| | - Ru-Yue Bai
- Department of Physiology and Pathophysiology, Cardiovascular Research Centre, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, Shaanxi, China
| | - Meng-Zhuan Han
- Department of Physiology and Pathophysiology, Cardiovascular Research Centre, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, Shaanxi, China
| | - Yong-Jian Zhang
- Department of Physiology and Pathophysiology, Cardiovascular Research Centre, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, Shaanxi, China
- Department of Cardiac Surgery, The First Affiliated Hospital, Xi'an Jiaotong University, 277 West Yanta Road, Xi'an, 710061, Shaanxi, China
| | - Wei Wu
- Department of Physiology and Pathophysiology, Cardiovascular Research Centre, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, Shaanxi, China
| | - Yu Zhang
- Department of Physiology and Pathophysiology, Cardiovascular Research Centre, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, Shaanxi, China
| | - Bao-Chang Lai
- Department of Physiology and Pathophysiology, Cardiovascular Research Centre, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, Shaanxi, China
| | - Yi Zhang
- Department of Physiology and Pathophysiology, Cardiovascular Research Centre, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, Shaanxi, China
| | - Yan Wang
- Department of Physiology and Pathophysiology, Cardiovascular Research Centre, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, Shaanxi, China
| | - Xiao-Jun Du
- Department of Physiology and Pathophysiology, Cardiovascular Research Centre, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, Shaanxi, China.
| | - Xiu-Ling Deng
- Department of Physiology and Pathophysiology, Cardiovascular Research Centre, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, Shaanxi, China.
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, Shaanxi, China.
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Yuan X, Bhat OM, Zou Y, Li X, Zhang Y, Li PL. Endothelial Acid Sphingomyelinase Promotes NLRP3 Inflammasome and Neointima Formation During Hypercholesterolemia. J Lipid Res 2022; 63:100298. [PMID: 36252682 PMCID: PMC9672920 DOI: 10.1016/j.jlr.2022.100298] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 09/27/2022] [Accepted: 09/29/2022] [Indexed: 11/18/2022] Open
Abstract
The NOD-like receptor pyrin domain 3 (NLRP3) inflammasome is activated during atherogenesis, but how this occurs is unclear. Here, we explored the mechanisms activating and regulating NLRP3 inflammasomes via the acid sphingomyelinase (ASM)-ceramide signaling pathway. As a neointima formation model, partial left carotid ligations were performed on endothelial cell (EC)-specific ASM transgene mice (Smpd1trg/ECcre) and their control littermates (Smpd1trg/WT and WT/WT) fed on the Western diet (WD). We found neointima formation remarkably increased in Smpd1trg/ECcre mice over their control littermates. Next, we observed enhanced colocalization of NLRP3 versus adaptor protein ASC (the adaptor molecule apoptosis-associated speck-like protein containing a CARD) or caspase-1 in the carotid ECs of WD-treated Smpd1trg/ECcre mice but not in their control littermates. In addition, we used membrane raft (MR) marker flotillin-1 and found more aggregation of ASM and ceramide in the intima of Smpd1trg/ECcre mice than their control littermates. Moreover, we demonstrated by in situ dihydroethidium staining, carotid intimal superoxide levels were much higher in WD-treated Smpd1trg/ECcre mice than in their control littermates. Using ECs from Smpd1trg/ECcre and WT/WT mice, we showed ASM overexpression markedly enhanced 7-ketocholesterol (7-Ket)-induced increases in NLRP3 inflammasome formation, accompanied by enhanced caspase-1 activity and elevated interleukin-1β levels. These 7-Ket-induced increases were significantly attenuated by ASM inhibitor amitriptyline. Furthermore, we determined that increased MR clustering with NADPH oxidase subunits to produce superoxide contributes to 7-Ket-induced NLRP3 inflammasome activation via a thioredoxin-interacting protein-mediated controlling mechanism. We conclude that ceramide from ASM plays a critical role in NLRP3 inflammasome activation during hypercholesterolemia via MR redox signaling platforms to produce superoxide, which leads to TXNIP dissociation.
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Affiliation(s)
- Xinxu Yuan
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Owais M Bhat
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Yao Zou
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Xiang Li
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Yang Zhang
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Pin-Lan Li
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, USA.
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Li G, Huang D, Li P, Yuan X, Yarotskyy V, Li PL. Regulation of exosome release by lysosomal acid ceramidase in coronary arterial endothelial cells: Role of TRPML1 channel. CURRENT TOPICS IN MEMBRANES 2022; 90:37-63. [PMID: 36368874 PMCID: PMC9842397 DOI: 10.1016/bs.ctm.2022.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Lysosomal acid ceramidase (AC) has been reported to determine multivesicular body (MVB) fate and exosome secretion in different mammalian cells including coronary arterial endothelial cells (CAECs). However, this AC-mediated regulation of exosome release from CAECs and associated underlying mechanism remain poorly understood. In the present study, we hypothesized that AC controls lysosomal Ca2+ release through TRPML1 channel to regulate exosome release in murine CAECs. To test this hypothesis, we isolated and cultured CAECs from WT/WT and endothelial cell-specific Asah1 gene (gene encoding AC) knockout mice. Using these CAECs, we first demonstrated a remarkable increase in exosome secretion and significant reduction of lysosome-MVB interaction in CAECs lacking Asah1 gene compared to those cells from WT/WT mice. ML-SA1, a TRPML1 channel agonist, was found to enhance lysosome trafficking and increase lysosome-MVB interaction in WT/WT CAECs, but not in CAECs lacking Asah1 gene. However, sphingosine, an AC-derived sphingolipid, was able to increase lysosome movement and lysosome-MVB interaction in CAECs lacking Asah1 gene, leading to reduced exosome release from these cells. Moreover, Asah1 gene deletion was shown to substantially inhibit lysosomal Ca2+ release through suppression of TRPML1 channel activity in CAECs. Sphingosine as an AC product rescued the function of TRPML1 channel in CAECs lacking Asah1 gene. These results suggest that Asah1 gene defect and associated deficiency of AC activity may inhibit TRPML1 channel activity, thereby reducing MVB degradation by lysosome and increasing exosome release from CAECs. This enhanced exosome release from CAECs may contribute to the development of coronary arterial disease under pathological conditions.
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Affiliation(s)
- Guangbi Li
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Dandan Huang
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Pengyang Li
- Division of Cardiology, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Xinxu Yuan
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Viktor Yarotskyy
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Pin-Lan Li
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States.
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17
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Takami Y, Wang C, Nakagami H, Yamamoto K, Nozato Y, Imaizumi Y, Nagasawa M, Takeshita H, Nakajima T, Takeda S, Takeya Y, Kaneda Y, Rakugi H. Novel pathophysiological roles of α-synuclein in age-related vascular endothelial dysfunction. FASEB J 2022; 36:e22555. [PMID: 36125010 DOI: 10.1096/fj.202101621r] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 08/21/2022] [Accepted: 09/06/2022] [Indexed: 11/11/2022]
Abstract
Although α-synuclein (SNCA) is a well-known pathological molecule involved in synucleinopathy in neurons, its physiological roles remain largely unknown. We reported that serum SNCA levels have a close inverse correlation with blood pressure and age, which indicates the involvement of SNCA in age-related endothelial dysfunction. Therefore, this study aimed to elucidate the molecular functions of SNCA in the endothelium. We confirmed that SNCA was expressed in and secreted from endothelial cells (ECs). Exogenous treatment with recombinant SNCA (rSNCA) activated the Akt-eNOS axis and increased nitric oxide production in ECs. Treatment with rSNCA also suppressed TNF-α- and palmitic acid-induced NF-κB activation, leading to the suppression of VCAM-1 upregulation and restoration of eNOS downregulation in ECs. As for endogenous SNCA expression, replicative senescence resulted in the attenuation of SNCA expression in cultured ECs, similar to the effects of physiological aging on mice aortas. The siRNA-mediated silencing of SNCA consistently resulted in senescent phenotypes, such as eNOS downregulation, increased β-gal activity, decreased Sirt1 expression, and increased p53 expression, in ECs. Ex vivo assessment of endothelial functions using aortic rings revealed impaired endothelium-dependent acetylcholine-induced relaxation in SNCA knockout (KO) mice. Furthermore, SNCA KO mice, especially those on a high-fat diet, displayed elevated blood pressure compared with wild-type mice; this could be eNOS dysfunction-dependent because of the lower difference caused by L-NAME administration. These results indicate that exogenous and endogenous SNCA in ECs might physiologically maintain vascular integrity, and age-related endothelial dysfunction might be partially ascribed to loss-of-function of SNCA in ECs.
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Affiliation(s)
- Yoichi Takami
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Cheng Wang
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hironori Nakagami
- Department of Health Development and Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Koichi Yamamoto
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yoichi Nozato
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yuki Imaizumi
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Motonori Nagasawa
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hikari Takeshita
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Tsuneo Nakajima
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Shuko Takeda
- Department of Clinical Gene Therapy, Osaka University Graduate School of Medicine, Osaka, Japan.,Osaka Psychiatric Research Center, Osaka Psychiatric Medical Center, Osaka, Japan
| | - Yasushi Takeya
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yasufumi Kaneda
- Division of Gene Therapy Science, Department of Genome Biology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hiromi Rakugi
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
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18
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Hong SG, Shin J, Choi SY, Powers JC, Meister BM, Sayoc J, Son JS, Tierney R, Recchia FA, Brown MD, Yang X, Park JY. Flow pattern-dependent mitochondrial dynamics regulates the metabolic profile and inflammatory state of endothelial cells. JCI Insight 2022; 7:159286. [PMID: 36134656 PMCID: PMC9514384 DOI: 10.1172/jci.insight.159286] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 08/10/2022] [Indexed: 11/17/2022] Open
Abstract
Endothelial mitochondria play a pivotal role in maintaining endothelial cell (EC) homeostasis through constantly altering their size, shape, and intracellular localization. Studies show that the disruption of the basal mitochondrial network in EC, forming excess fragmented mitochondria, implicates cardiovascular disease. However, cellular consequences underlying the morphological changes in the endothelial mitochondria under distinctively different, but physiologically occurring, flow patterns (i.e., unidirectional flow [UF] versus disturbed flow [DF]) are largely unknown. The purpose of this study was to investigate the effect of different flow patterns on mitochondrial morphology and its implications in EC phenotypes. We show that mitochondrial fragmentation is increased at DF-exposed vessel regions, where elongated mitochondria are predominant in the endothelium of UF-exposed regions. DF increased dynamin-related protein 1 (Drp1), mitochondrial reactive oxygen species (mtROS), hypoxia-inducible factor 1, glycolysis, and EC activation. Inhibition of Drp1 significantly attenuated these phenotypes. Carotid artery ligation and microfluidics experiments further validate that the significant induction of mitochondrial fragmentation was associated with EC activation in a Drp1-dependent manner. Contrarily, UF in vitro or voluntary exercise in vivo significantly decreased mitochondrial fragmentation and enhanced fatty acid uptake and OXPHOS. Our data suggest that flow patterns profoundly change mitochondrial fusion/fission events, and this change contributes to the determination of proinflammatory and metabolic states of ECs.
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Affiliation(s)
- Soon-Gook Hong
- Cardiovascular Research Center, Lewis Katz School of Medicine, and.,Department of Kinesiology, College of Public Health, Temple University, Philadelphia, Pennsylvania, USA
| | - Junchul Shin
- Cardiovascular Research Center, Lewis Katz School of Medicine, and
| | - Soo Young Choi
- Cardiovascular Research Center, Lewis Katz School of Medicine, and
| | - Jeffery C Powers
- Cardiovascular Research Center, Lewis Katz School of Medicine, and
| | - Benjamin M Meister
- Cardiovascular Research Center, Lewis Katz School of Medicine, and.,Department of Kinesiology, College of Public Health, Temple University, Philadelphia, Pennsylvania, USA
| | - Jacqueline Sayoc
- Cardiovascular Research Center, Lewis Katz School of Medicine, and
| | - Jun Seok Son
- Laboratory of Perinatal Kinesioepigenetics, Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Ryan Tierney
- Department of Kinesiology, College of Public Health, Temple University, Philadelphia, Pennsylvania, USA
| | - Fabio A Recchia
- Cardiovascular Research Center, Lewis Katz School of Medicine, and.,Institute of Life Sciences, Scuola Speriore Sant'Anna, Pisa, Italy
| | - Michael D Brown
- Department of Kinesiology, School of Public Health, University of Maryland, College Park, Maryland, USA
| | - Xiaofeng Yang
- Cardiovascular Research Center, Lewis Katz School of Medicine, and
| | - Joon-Young Park
- Cardiovascular Research Center, Lewis Katz School of Medicine, and.,Department of Kinesiology, College of Public Health, Temple University, Philadelphia, Pennsylvania, USA.,Robbins College of Health and Human Sciences, Baylor University, Waco, Texas, USA
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19
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Taohong Siwu Decoction Promotes Osteo-Angiogenesis in Fractures by Regulating the HIF-1α Signaling Pathway. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:6777447. [PMID: 36193143 PMCID: PMC9526655 DOI: 10.1155/2022/6777447] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 08/02/2022] [Accepted: 08/13/2022] [Indexed: 11/17/2022]
Abstract
Background Vascular damage is a major consequence of bone fracture. Taohong Siwu decoction (TSD) can raise the expression of vascular endothelial growth factor (VEGF) in fracture healing. However, its molecular mechanism in promoting angiogenesis is still unknown. The aim of this study was to investigate the potential mechanisms of TSD in the regulation of osteo-angiogenesis in fracture healing. Methods A rat tibial fracture model was established. After low- (4.5 g·kg−1), medium- (9 g·kg−1), and high-dose TSD (18 g·kg−1) and panax notoginsenoside (25 mg kg−1) treatment, hematoxylin-eosin staining was employed to visualize pathological changes in bone tissues. The levels of cytokines (interleukin (IL)-2, tumor necrosis factor-α (TNF-α), IL-6, and IL-1β), thromboxane B2 (TXB2), and 6 ketone prostaglandin F1α (6-Keto-PGF1α) were quantified by enzyme-linked immunosorbent assay (ELISA). Immunofluorescence was used to identify the rat aortic endothelial cells (RAECs). Control serum, 10% TSD-containing serum, and 10% TSD-containing serum combined with hypoxia-inducible factor-1α (HIF-1α) inhibitor were used to treat the RAECs and rat osteoblasts. Transwell migration assay was utilized to examine the migration of the RAECs. The Matrigel tubulogenesis assay was used for the assessment of angiogenesis. The expression of angiogenesis- (von Hippel-Lindau tumor suppressor (VHL), HIF-1α, VEGF, angiopoietin-2 (Ang-2), and pVHL) and osteogenesis-related (alkaline phosphatase (ALP), runt-related transcription factor 2 (Runx2), and osteopontin-1 (OPN-1)) protein and gene was detected by western blot and quantitative real-time PCR (qRT-PCR). Results Compared with the model group, TSD increased the trabecular bone areas, numbers, and thicknesses in fractured rats. In the plasma, the levels of cytokines and TXB2 in the middle- and high-dose TSD group were significantly lower than those in the model group (P < 0.01). The 6-keto-PGF1α content was increased by middle- and high-dose TSD intervention (P < 0.01). Compared to the control serum group, the angiogenesis and migration of the RAECs were enhanced in the TSD group (P < 0.001). The expression of HIF-1α, VEGF, and Ang-2 in the TSD group upregulated significantly (P < 0.001). VHL and pVHL were inhibited under TSD-containing serum treatment (P < 0.001). ALP, Runx2, and OPN-1 were increased obviously in the TSD group (P < 0.001). Nevertheless, the HIF-1α inhibitor reversed these changes (P < 0.001). Conclusion TSD promotes angiogenesis and osteogenesis by regulating the HIF-1α signaling pathway. Meanwhile, it can effectively reduce the risk of inflammation and improve blood circulation.
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20
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Peng M, Sun R, Hong Y, Wang J, Xie Y, Zhang X, Li J, Guo H, Xu P, Li Y, Wang X, Wan T, Zhao Y, Huang F, Wang Y, Ye R, Liu Q, Liu G, Liu X, Xu G. Extracellular vesicles carrying proinflammatory factors may spread atherosclerosis to remote locations. Cell Mol Life Sci 2022; 79:430. [PMID: 35851433 PMCID: PMC11071964 DOI: 10.1007/s00018-022-04464-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/28/2022] [Accepted: 07/01/2022] [Indexed: 11/25/2022]
Abstract
Most cells involved in atherosclerosis release extracellular vesicles (EVs), which can carry bioactive substances to downstream tissues via circulation. We hypothesized that EVs derived from atherosclerotic plaques could promote atherogenesis in remote locations, a mechanism that mimics the blood metastasis of cancer. Ldlr gene knockout (Ldlr KO) rats were fed on a high cholesterol diet and underwent partial carotid ligation to induce local atherosclerosis. EVs were separated from carotid artery tissues and downstream blood of carotid ligation by centrifugation. MiRNA sequencing and qPCR were then performed to detect miRNA differences in EVs from rats with and without induced carotid atherosclerosis. Biochemical analyses demonstrated that EVs derived from atherosclerosis could increase the expression of ICAM-1, VCAM-1, and E-selectin in endothelial cells in vitro. EVs derived from atherosclerosis contained a higher level of miR-23a-3p than those derived from controls. MiR-23a-3p could promote endothelial inflammation by targeting Dusp5 and maintaining ERK1/2 phosphorylation in vitro. Inhibiting EV release could attenuate atherogenesis and reduce macrophage infiltration in vivo. Intravenously administrating atherosclerotic plaque-derived EVs could induce intimal inflammation, arterial wall thickening and lumen narrowing in the carotids of Ldlr KO rats, while simultaneous injection of miR-23a-3p antagomir could reverse this reaction. The results suggested that EVs may transfer atherosclerosis to remote locations by carrying proinflammatory factors, particularly miR-23a-3p.
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Affiliation(s)
- Mengna Peng
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Rui Sun
- Department of Neurology, Shanghai Changhai Hospital, Second Military Medical University/Naval Medical University, Shanghai, 200433, China
| | - Ye Hong
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210002, Jiangsu, China
| | - Jia Wang
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Yi Xie
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Xiaohao Zhang
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Juanji Li
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Hongquan Guo
- Department of Neurology, Jinling Hospital, the First School of Clinical Medicine, Southern Medical University, Nanjing, 210002, Jiangsu, China
| | - Pengfei Xu
- Division of Life Sciences and Medicine, Stroke Center & Department of Neurology, Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, 230036, Anhui, China
| | - Yunzi Li
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Xiaoke Wang
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Ting Wan
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Ying Zhao
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Feihong Huang
- Department of Neurology, Guilin People's Hospital, Guilin, 541002, Guangxi, China
| | - Yuhui Wang
- Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Peking University, Beijing, 100191, China
- Institute of Cardiovascular Sciences, School of Basic Medicine, Peking University Health Science Center, Beijing, 100191, China
| | - Ruidong Ye
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Qian Liu
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - George Liu
- Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Peking University, Beijing, 100191, China
- Institute of Cardiovascular Sciences, School of Basic Medicine, Peking University Health Science Center, Beijing, 100191, China
| | - Xinfeng Liu
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China.
- Department of Neurology, Jinling Hospital, the First School of Clinical Medicine, Southern Medical University, Nanjing, 210002, Jiangsu, China.
- Division of Life Sciences and Medicine, Stroke Center & Department of Neurology, Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, 230036, Anhui, China.
| | - Gelin Xu
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China.
- Department of Neurology, Shenzhen Second People's Hospital/First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, Guangdong, China.
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21
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Inhibition of microRNA-33b specifically ameliorates abdominal aortic aneurysm formation via suppression of inflammatory pathways. Sci Rep 2022; 12:11984. [PMID: 35835906 PMCID: PMC9283493 DOI: 10.1038/s41598-022-16017-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Accepted: 07/04/2022] [Indexed: 11/30/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) is a lethal disease, but no beneficial therapeutic agents have been established to date. Previously, we found that AAA formation is suppressed in microRNA (miR)-33-deficient mice compared with wild-type mice. Mice have only one miR-33, but humans have two miR-33 s, miR-33a and miR-33b. The data so far strongly support that inhibiting miR-33a or miR-33b will be a new strategy to treat AAA. We produced two specific anti-microRNA oligonucleotides (AMOs) that may inhibit miR-33a and miR-33b, respectively. In vitro studies showed that the AMO against miR-33b was more effective; therefore, we examined the in vivo effects of this AMO in a calcium chloride (CaCl2)-induced AAA model in humanized miR-33b knock-in mice. In this model, AAA was clearly improved by application of anti-miR-33b. To further elucidate the mechanism, we evaluated AAA 1 week after CaCl2 administration to examine the effect of anti-miR-33b. Histological examination revealed that the number of MMP-9-positive macrophages and the level of MCP-1 in the aorta of mice treated with anti-miR-33b was significantly reduced, and the serum lipid profile was improved compared with mice treated with control oligonucleotides. These results support that inhibition of miR-33b is effective in the treatment for AAA.
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22
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Overexpression of alanine-glyoxylate aminotransferase 2 protects from asymmetric dimethylarginine-induced endothelial dysfunction and aortic remodeling. Sci Rep 2022; 12:9381. [PMID: 35672381 PMCID: PMC9174227 DOI: 10.1038/s41598-022-13169-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 05/20/2022] [Indexed: 12/03/2022] Open
Abstract
Elevated plasma concentrations of asymmetric dimethylarginine (ADMA) are associated with an increased risk of mortality and adverse cardiovascular outcomes. ADMA can be metabolized by dimethylarginine dimethylaminohydrolases (DDAHs) and by alanine-glyoxylate aminotransferase 2 (AGXT2). Deletion of DDAH1 in mice leads to elevation of ADMA in plasma and increase in blood pressure, while overexpression of human DDAH1 is associated with a lower plasma ADMA concentration and protective cardiovascular effects. The possible role of alternative metabolism of ADMA by AGXT2 remains to be elucidated. The goal of the current study was to test the hypothesis that transgenic overexpression of AGXT2 leads to lowering of plasma levels of ADMA and protection from vascular damage in the setting of DDAH1 deficiency. We generated transgenic mice (TG) with ubiquitous overexpression of AGXT2. qPCR and Western Blot confirmed the expression of the transgene. Systemic ADMA levels were decreased by 15% in TG mice. In comparison with wild type animals plasma levels of asymmetric dimethylguanidino valeric acid (ADGV), the AGXT2 associated metabolite of ADMA, were six times higher. We crossed AGXT2 TG mice with DDAH1 knockout mice and observed that upregulation of AGXT2 lowers plasma ADMA and pulse pressure and protects the mice from endothelial dysfunction and adverse aortic remodeling. Upregulation of AGXT2 led to lowering of ADMA levels and protection from ADMA-induced vascular damage in the setting of DDAH1 deficiency. This is especially important, because all the efforts to develop pharmacological ADMA-lowering interventions by means of upregulation of DDAHs have been unsuccessful.
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Liang W, Lu H, Sun J, Zhao G, Wang H, Guo Y, Eitzman D, Chen YE, Fan Y, Zhang J. KLF11 Protects against Venous Thrombosis via Suppressing Tissue Factor Expression. Thromb Haemost 2022; 122:777-788. [PMID: 34428834 PMCID: PMC10468287 DOI: 10.1055/s-0041-1735191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Krüppel-like factors (KLFs) play essential roles in multiple biological functions, including maintaining vascular homeostasis. KLF11, a causative gene for maturity-onset diabetes of the young type 7, inhibits endothelial activation and protects against stroke. However, the role of KLF11 in venous thrombosis remains to be explored. Utilizing stasis-induced murine deep vein thrombosis (DVT) model and cultured endothelial cells (ECs), we identified an increase of KLF11 expression under prothrombotic conditions both in vivo and in vitro. The expression change of thrombosis-related genes was determined by utilizing gain- and loss-of-function approaches to alter KLF11 expression in ECs. Among these genes, KLF11 significantly downregulated tumor necrosis factor-α (TNF-α)-induced tissue factor (TF) gene transcription. Using reporter gene assay, chromatin immunoprecipitation assay, and co-immunoprecipitation, we revealed that KLF11 could reduce TNF-α-induced binding of early growth response 1 (EGR1) to TF gene promoter in ECs. In addition, we demonstrated that conventional Klf11 knockout mice were more susceptible to developing stasis-induced DVT. These results suggest that under prothrombotic conditions, KLF11 downregulates TF gene transcription via inhibition of EGR1 in ECs. In conclusion, KLF11 protects against venous thrombosis, constituting a potential molecular target for treating thrombosis.
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Affiliation(s)
- Wenying Liang
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan, Unites States
| | - Haocheng Lu
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
| | - Jinjian Sun
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
| | - Guizhen Zhao
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
| | - Huilun Wang
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan, Unites States
| | - Yanhong Guo
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
| | - Daniel Eitzman
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
| | - Y Eugene Chen
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
| | - Yanbo Fan
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, Ohio, Unites States
- Division of Cardiovascular Health and Disease, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, Unites States
| | - Jifeng Zhang
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
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24
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Tai GJ, Yu QQ, Li JP, Wei W, Ji XM, Zheng RF, Li XX, Wei L, Xu M. NLRP3 inflammasome links vascular senescence to diabetic vascular lesions. Pharmacol Res 2022; 178:106143. [PMID: 35219871 DOI: 10.1016/j.phrs.2022.106143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/31/2022] [Accepted: 02/22/2022] [Indexed: 01/10/2023]
Abstract
Vascular senescence is inextricably linked to the onset and progression of cardiovascular diseases (CVDs), which are the main cause of mortality in people with Type 2 diabetes (T2DM). Previous studies have emphasized the importance of chronic aseptic inflammation in diabetic vasculopathy. Here, we found the abnormal activation of NLRP3 inflammasome in the aorta of both old and T2DM mice by immunofluorescence and Western Blot analysis. Histopathological and isometry tension analysis showed that the presence of T2DM triggered or aggravated the increase of vascular aging markers, as well as age-associated vascular impairment and vasomotor dysfunction, which were improved by NLRP3 deletion or inhibition. Differential expression of aortic genes links to senescence activation and vascular remodeling supports the favorable benefits of NLRP3-/- during T2DM. In vitro results based on primary mice aortic endothelial cells (MAECs) and vascular smooth muscle cells (VSMCs) demonstrate that NLRP3 deficiency attenuated premature senescence and restored proliferation and migration capability under-stimulation, and partially ameliorated replicative senescence. These results provide an insight into the critical role of NLRP3 signaling in T2DM-induced vascular aging and loss of vascular homeostasis, and provide the possibility that targeting NLRP3 inflammasome might be a promising strategy to prevent diabetic vascular senescence and associated vascular lesions.
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Affiliation(s)
- Guang-Jie Tai
- Department of Clinical Pharmacy, School of Preclinical Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Qing-Qing Yu
- Department of Clinical Pharmacy, School of Preclinical Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Jia-Peng Li
- Department of Clinical Pharmacy, School of Preclinical Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Wei Wei
- Department of Clinical Pharmacy, School of Preclinical Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Xiao-Man Ji
- Department of Clinical Pharmacy, School of Preclinical Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Rui-Fang Zheng
- Xinjiang Key Laboratory of Uighur Medicines, Xinjiang Institute of Materia Medica, Urumchi, Xinjiang 830004, China
| | - Xiao-Xue Li
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, China
| | - Li Wei
- Department of Practice and Policy, UCL School of Pharmacy, London WC1N 1AX, United Kingdom
| | - Ming Xu
- Department of Clinical Pharmacy, School of Preclinical Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 210009, China.
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Chen J, Zhuang R, Cheng HS, Jamaiyar A, Assa C, McCoy M, Rawal S, Pérez-Cremades D, Feinberg MW. Isolation and culture of murine aortic cells and RNA isolation of aortic intima and media: Rapid and optimized approaches for atherosclerosis research. Atherosclerosis 2022; 347:39-46. [PMID: 35306416 PMCID: PMC9007896 DOI: 10.1016/j.atherosclerosis.2022.03.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 03/04/2022] [Accepted: 03/09/2022] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND AIMS Isolation of cellular constituents from the mouse aorta is commonly used for expression or functional analyses in atherosclerosis research. However, current procedures to isolate primary cells are difficult, inefficient, and require separate mice. RNA extraction from aortic intima and media for transcriptomic analysis is also considered difficult with mixed RNA yields. To address these gaps, we provide: 1) a rapid, efficient protocol to isolate and culture diverse cell types concomitantly from the mouse aorta using immunomagnetic cell isolation; and 2) an optimized aortic intimal peeling technique for efficient RNA isolation from the intima and media. METHODS AND RESULTS Aortic cells were obtained using an enzymatic solution and different cell types were isolated by magnetic beads conjugated to antibodies targeting endothelial cells (CD31+), leukocytes (CD45+), and fibroblast cells (CD90.2+), and smooth muscle cells were isolated by negative selection. Our protocol allows the isolation of relatively large numbers of cells (10,000 cells per aorta) in a predictable manner with high purity (>90%) verified by cell-marker gene expression, immunofluorescence, and flow cytometry. These cells are all functionally active when grown in cell culture. We also provide a rapid method to collect aortic intima-enriched RNA from Ldlr-/- mice utilizing an intima peeling approach and assess transcriptomic profiling associated with accelerated lesion formation. CONCLUSIONS This protocol provides an effective means for magnetic bead-based isolation of different cell types from the mouse aortic wall, and the isolated cells can be utilized for functional and mechanistic studies for a range of vascular diseases including atherosclerosis.
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Affiliation(s)
- Jingshu Chen
- Department of Medicine, Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Rulin Zhuang
- Department of Medicine, Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA; Department of Cardiovascular Surgery, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China
| | - Henry S Cheng
- Department of Medicine, Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Anurag Jamaiyar
- Department of Medicine, Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Carmel Assa
- Department of Medicine, Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Michael McCoy
- Department of Medicine, Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Shruti Rawal
- Department of Medicine, Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Daniel Pérez-Cremades
- Department of Medicine, Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA; Department of Physiology, University of Valencia and INCLIVA Biomedical Research Institute, Valencia, 46010, Spain
| | - Mark W Feinberg
- Department of Medicine, Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA.
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Pinsard M, Mouchet N, Dion L, Bessede T, Bertrand M, Darai E, Bellaud P, Loget P, Mazaud-Guittot S, Morandi X, Leveque J, Lavoué V, Duraes M, Nyangoh Timoh K. Anatomic and functional mapping of human uterine innervation. Fertil Steril 2022; 117:1279-1288. [PMID: 35367063 DOI: 10.1016/j.fertnstert.2022.02.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 02/09/2022] [Accepted: 02/10/2022] [Indexed: 01/24/2023]
Abstract
OBJECTIVE To better understand the physiology of pain in pelvic pain pathological conditions, such as endometriosis, in which alterations of uterine innervation have been highlighted, we performed an anatomic and functional mapping of the macro- and microinnervation of the human uterus. Our aim was to provide a 3-dimensional reconstruction model of uterine innervation. DESIGN This was an experimental study. We dissected the pelvises of 4 human female fetuses into serial sections, and treated them with hematoxylin and eosin staining before immunostaining. SETTING Academic Research Unit. PATIENTS None. INTERVENTIONS None. MAIN OUTCOME MEASURES Detection of nerves (S100 +) and characterization of the types of nerves. The slices obtained were aligned to construct a 3-dimensional model. RESULTS A 3-dimensional model of uterine innervation was constructed. The nerve fibers appeared to have a centripetal path from the uterine serosa to the endometrium. Within the myometrium, innervation was dense. Endometrial innervation was sparse but present in the functional layer of the endometrium. Overall innervation was richest in the supravaginal cervix and rarer in the body of the uterus. Innervation was rich particularly laterally to the cervix next to the parametrium and paracervix. Four types of nerve fibers were identified: autonomic sympathetic (TH+), parasympathetic (VIP+), and sensitive (NPY+, CGRP1+ and VIP+). They were found in the 3 portions and the 3 layers of the uterus. CONCLUSIONS We constructed a 3-dimensional model of the human uterine innervation. This model could provide a solid base for studying uterine innervation in pathologic situations, in order to find new therapeutic approaches.
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Affiliation(s)
- Marion Pinsard
- Department of Obstetrics and Gynecology, Hopital Universitaire de Rennes, Rennes, France
| | - Nicolas Mouchet
- University Rennes 1, CNRS, Inserm UMS Biosit, France BioImaging, Core Facility H2P2 Rennes, France
| | - Ludivine Dion
- Department of Obstetrics and Gynecology, Hopital Universitaire de Rennes, Rennes, France; Inserm, EHESP, Irset (Institut de Recherche en Santé, Environnement et Travail) Rennes, France
| | - Thomas Bessede
- UMR 1195, University Paris-Sud, INSERM, Université Paris-Saclay, Le Kremlin-Bicetre, France; Urology Department, Hopitaux Universitaires Paris-Sud, Le Kremlin-Bicetre, France
| | | | - Emile Darai
- Service de gynécologie obstétrique et médecine de la reproduction, Hôpital Tenon, Paris, France; Centre de Recherche Saint-Antoine, Paris, France
| | - Pascale Bellaud
- University Rennes 1, CNRS, Inserm UMS Biosit, France BioImaging, Core Facility H2P2 Rennes, France
| | - Philippe Loget
- Service d'Anatomie et Cytologie Pathologiques, Rennes, France
| | - Séverine Mazaud-Guittot
- Inserm, EHESP, Irset (Institut de Recherche en Santé, Environnement et Travail) Rennes, France
| | - Xavier Morandi
- Laboratoire d'Anatomie et d'Organogenèse, Faculté de Médecine, Centre Hospitalier Universitaire de Rennes, Rennes, France; Department of Neurosurgery, Rennes University Hospital, Rennes, France
| | - Jean Leveque
- Department of Obstetrics and Gynecology, Hopital Universitaire de Rennes, Rennes, France
| | - Vincent Lavoué
- Department of Obstetrics and Gynecology, Hopital Universitaire de Rennes, Rennes, France; Inserm, EHESP, Irset (Institut de Recherche en Santé, Environnement et Travail) Rennes, France
| | - Martha Duraes
- Urology Department, Hopitaux Universitaires Paris-Sud, Le Kremlin-Bicetre, France
| | - Krystel Nyangoh Timoh
- Department of Obstetrics and Gynecology, Hopital Universitaire de Rennes, Rennes, France; Laboratoire d'Anatomie et d'Organogenèse, Faculté de Médecine, Centre Hospitalier Universitaire de Rennes, Rennes, France; University Rennes, INSERM, LTSI - UMR 1099, F35000, Rennes, France.
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Lin TY, Yang CH, Chou HC, Cheng CM, Liu YW, Wang JY, Huang LR, Tsai SF, Huang SF, Chen YR. EGFR Mutation-Harboring Lung Cancer Cells Produce CLEC11A with Endothelial Trophic and Tumor-Promoting Activities. Cancers (Basel) 2022; 14:cancers14051356. [PMID: 35267664 PMCID: PMC8909374 DOI: 10.3390/cancers14051356] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/02/2022] [Accepted: 03/04/2022] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Tumor angiogenesis is an important step in the progression of solid tumors. Understanding the mechanisms involved in tumor vasculature formation is critical for improving anti-angiogenic strategies. In this study, we reported that EGFR mutation-containing lung cancer cells produced CLEC11A with endothelial trophic and tumor-promoting activities. CLEC11A could be a novel factor involved in tumor angiogenesis. Abstract The formation of new blood vessels in solid tumors is regulated by various endothelial trophic factors. We identified that CLEC11A, an extracellular C-type lectin, was over-expressed in lung cancer cell lines harboring mutated EGFR. CLEC11A expression was also frequently elevated in lung adenocarcinoma (LAC) tissues with EGFR mutation. CLEC11A-expressing H1299 cells formed larger tumors in nude mice than did the control cells. The CLEC11A-expressing tumors contained more CD31-positive cells, suggesting that they had a higher angiogenic activity. CLEC11A per se did not induce blood vessel formation, but enhanced angiogenesis triggered by VEGF-A or basic FGF in vivo. Additionally, the expression of small hairpin RNA against CLEC11A (shCLEC11A) in HCC827 LAC cells suppressed their tumorigenic ability. Purified CLEC11A exhibited a chemotactic ability, which is dependent on its integrin-binding RGD and LDT motifs, toward endothelial cells. This chemotactic activity was not affected by the presence of a VEGFR inhibitor. Conditioned medium produced by HCC827-shCLEC11A cells had diminished chemotactic ability toward endothelial cells. CLEC11A treatments increased the levels of active integrin β1 that were not associated with activation of focal adhesion kinases in endothelial cells. Our results indicated that CLEC11A was a factor of angiogenic potential and was involved in lung cancer tumorigenesis.
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Affiliation(s)
- Tzu-Yin Lin
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan 35053, Taiwan; (T.-Y.L.); (C.-H.Y.); (H.-C.C.); (C.-M.C.); (Y.-W.L.); (J.-Y.W.); (L.-R.H.); (S.-F.T.); (S.-F.H.)
| | - Chi-Hwa Yang
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan 35053, Taiwan; (T.-Y.L.); (C.-H.Y.); (H.-C.C.); (C.-M.C.); (Y.-W.L.); (J.-Y.W.); (L.-R.H.); (S.-F.T.); (S.-F.H.)
| | - Hsiao-Chin Chou
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan 35053, Taiwan; (T.-Y.L.); (C.-H.Y.); (H.-C.C.); (C.-M.C.); (Y.-W.L.); (J.-Y.W.); (L.-R.H.); (S.-F.T.); (S.-F.H.)
| | - Chun-Mei Cheng
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan 35053, Taiwan; (T.-Y.L.); (C.-H.Y.); (H.-C.C.); (C.-M.C.); (Y.-W.L.); (J.-Y.W.); (L.-R.H.); (S.-F.T.); (S.-F.H.)
| | - Ya-Wen Liu
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan 35053, Taiwan; (T.-Y.L.); (C.-H.Y.); (H.-C.C.); (C.-M.C.); (Y.-W.L.); (J.-Y.W.); (L.-R.H.); (S.-F.T.); (S.-F.H.)
| | - Jiz-Yuh Wang
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan 35053, Taiwan; (T.-Y.L.); (C.-H.Y.); (H.-C.C.); (C.-M.C.); (Y.-W.L.); (J.-Y.W.); (L.-R.H.); (S.-F.T.); (S.-F.H.)
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Li-Rung Huang
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan 35053, Taiwan; (T.-Y.L.); (C.-H.Y.); (H.-C.C.); (C.-M.C.); (Y.-W.L.); (J.-Y.W.); (L.-R.H.); (S.-F.T.); (S.-F.H.)
| | - Shih-Feng Tsai
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan 35053, Taiwan; (T.-Y.L.); (C.-H.Y.); (H.-C.C.); (C.-M.C.); (Y.-W.L.); (J.-Y.W.); (L.-R.H.); (S.-F.T.); (S.-F.H.)
- Institute of Genetics, Genome Research Center, National Yang-Ming Chiao-Tung University, Hsinchu 30010, Taiwan
| | - Shiu-Feng Huang
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan 35053, Taiwan; (T.-Y.L.); (C.-H.Y.); (H.-C.C.); (C.-M.C.); (Y.-W.L.); (J.-Y.W.); (L.-R.H.); (S.-F.T.); (S.-F.H.)
- Department of Anatomic Pathology, Linko Chang Gung Memorial Hospital, Chang-Gung University, Taoyuan 33302, Taiwan
| | - Yi-Rong Chen
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan 35053, Taiwan; (T.-Y.L.); (C.-H.Y.); (H.-C.C.); (C.-M.C.); (Y.-W.L.); (J.-Y.W.); (L.-R.H.); (S.-F.T.); (S.-F.H.)
- Correspondence: ; Tel.:+886-37-206166 (ext. 35311)
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Ramji DP, Ismail A, Chen J, Alradi F, Al Alawi S. Survey of In Vitro Model Systems for Investigation of Key Cellular Processes Associated with Atherosclerosis. METHODS IN MOLECULAR BIOLOGY (CLIFTON, N.J.) 2022; 2419:39-56. [PMID: 35237957 DOI: 10.1007/978-1-0716-1924-7_3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Atherosclerosis progression is associated with a complex array of cellular processes in the arterial wall, including endothelial cell activation/dysfunction, chemokine-driven recruitment of immune cells, differentiation of monocytes to macrophages and their subsequent transformation into lipid laden foam cells, activation of inflammasome and pro-inflammatory signaling, and migration of smooth muscle cells from the media to the intima. The use of in vitro model systems has considerably advanced our understanding of these atherosclerosis-associated processes and they are also often used in drug discovery and other screening platforms. This chapter will describe key in vitro model systems employed frequently in atherosclerosis research.
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Affiliation(s)
- Dipak P Ramji
- Cardiff School of Biosciences, Cardiff University, Cardiff, UK.
| | - Alaa Ismail
- Cardiff School of Biosciences, Cardiff University, Cardiff, UK
| | - Jing Chen
- Cardiff School of Biosciences, Cardiff University, Cardiff, UK
| | - Fahad Alradi
- Cardiff School of Biosciences, Cardiff University, Cardiff, UK
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Su E, Yu P, Zhang B, Zhang A, Xie S, Zhang C, Li S, Zou Y, Liu M, Jiang H, Ge J. Endothelial Intracellular ANG (Angiogenin) Protects Against Atherosclerosis by Decreasing Endoplasmic Reticulum Stress. Arterioscler Thromb Vasc Biol 2022; 42:305-325. [PMID: 35045729 DOI: 10.1161/atvbaha.121.317339] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND ANG (angiogenin) is essential for cellular adaptation to endoplasmic reticulum (ER) stress, a process closely associated with cardiovascular diseases, including atherosclerosis. We aimed to investigate the role of ANG in the progression of atherosclerosis and elucidate its underlying molecular mechanisms. METHODS We constructed adenoassociated virus 9 ANG overexpression vectors and endothelial ANG- and ApoE (apolipoprotein E)-deficient mice to determine the effects of ANG on ER stress and atherosclerotic lesions. RNA sequencing of endothelial ANG- and ApoE-deficient mice identified ANG-dependent downregulation of ST3GAL5 (ST3 beta-galactoside alpha-2,3-sialyltransferase 5) expression, and the direct regulation of ST3GAL5 by ANG was verified by chromatin immunoprecipitation sequencing and luciferase reporter assay results. RESULTS Reanalysis of expression profiling datasets indicated decreased ANG levels in patients' atherosclerotic lesions, and these data were validated in aortas from ApoE-/- mice. ER stress marker and adhesion molecule levels, aortic root lesions and macrophage deposition were substantially reduced in ApoE-/- mice injected with an adenoassociated virus 9 ANG without signal peptide (ANG-ΔSP) overexpression vector compared with empty and full-length ANG overexpression vectors. Endothelial ANG deficiency significantly elevated ER stress and increased adhesion molecule expression, which aggravated atherosclerotic lesions and enhanced THP-1 monocyte adhesion to endothelial cells in vivo and in vitro, respectively. Furthermore, ANG-ΔSP overexpression significantly attenuated oxidized low-density lipoprotein-induced ER stress and THP-1 monocyte adhesion to endothelial cells, which were reversed by ST3GAL5 inhibition. CONCLUSIONS These results suggest that endothelial intracellular ANG is a novel therapeutic against atherosclerosis and exerts atheroprotective effects via ST3GAL5-mediated ER stress suppression.
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Affiliation(s)
- Enyong Su
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases (E.S., B.Z., S.X., C.Z., S.L., Y.Z., H.J., J.G.), Zhongshan Hospital, Fudan University, Shanghai, China
| | - Peng Yu
- Department of Endocrinology and Metabolism (P.Y.), Zhongshan Hospital, Fudan University, Shanghai, China
| | - Baoli Zhang
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases (E.S., B.Z., S.X., C.Z., S.L., Y.Z., H.J., J.G.), Zhongshan Hospital, Fudan University, Shanghai, China
| | - Anjing Zhang
- Department of Neurorehabilitation Medicine, Kongjiang Branch, the First Rehabilitation Hospital of Shanghai, China (A.Z.)
| | - Shiyao Xie
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases (E.S., B.Z., S.X., C.Z., S.L., Y.Z., H.J., J.G.), Zhongshan Hospital, Fudan University, Shanghai, China
| | - Chunyu Zhang
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases (E.S., B.Z., S.X., C.Z., S.L., Y.Z., H.J., J.G.), Zhongshan Hospital, Fudan University, Shanghai, China
| | - Su Li
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases (E.S., B.Z., S.X., C.Z., S.L., Y.Z., H.J., J.G.), Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yunzeng Zou
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases (E.S., B.Z., S.X., C.Z., S.L., Y.Z., H.J., J.G.), Zhongshan Hospital, Fudan University, Shanghai, China
| | - Ming Liu
- Department of Health Management Center (M.L.), Zhongshan Hospital, Fudan University, Shanghai, China
| | - Hong Jiang
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases (E.S., B.Z., S.X., C.Z., S.L., Y.Z., H.J., J.G.), Zhongshan Hospital, Fudan University, Shanghai, China
| | - Junbo Ge
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases (E.S., B.Z., S.X., C.Z., S.L., Y.Z., H.J., J.G.), Zhongshan Hospital, Fudan University, Shanghai, China
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Jeong K, Murphy JM, Kim JH, Campbell PM, Park H, Rodriguez Y, Choi C, Kim JS, Park S, Kim HJ, Scammell JG, Weber DS, Honkanen RE, Schlaepfer DD, Ahn EYE, Lim STS. FAK Activation Promotes SMC Dedifferentiation via Increased DNA Methylation in Contractile Genes. Circ Res 2021; 129:e215-e233. [PMID: 34702049 DOI: 10.1161/circresaha.121.319066] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Rationale: Vascular smooth muscle cells (SMCs) exhibit remarkable plasticity and can undergo dedifferentiation upon pathological stimuli associated with disease and interventions. Objective: Although epigenetic changes are critical in SMC phenotype switching, a fundamental regulator that governs the epigenetic machineries regulating the fate of SMC phenotype has not been elucidated. Methods and Results: Using SMCs, mouse models, and human atherosclerosis specimens, we found that focal adhesion kinase (FAK) activation elicits SMC dedifferentiation by stabilizing DNA methyltransferase 3A (DNMT3A). FAK in SMCs is activated in the cytoplasm upon serum stimulation in vitro or vessel injury and active FAK prevents DNMT3A from nuclear FAK-mediated degradation. However, pharmacological or genetic FAK catalytic inhibition forced FAK nuclear localization, which reduced DNMT3A protein via enhanced ubiquitination and proteasomal degradation. Reduced DNMT3A protein led to DNA hypomethylation in contractile gene promoters, which increased SMC contractile protein expression. RNA sequencing identified SMC contractile genes as a foremost upregulated group by FAK inhibition from injured femoral artery samples compared to vehicle group. DNMT3A knockdown in injured arteries reduced DNA methylation and enhanced contractile gene expression supports the notion that nuclear FAK-mediated DNMT3A degradation via E3 ligase TRAF6 drives differentiation of SMCs. Furthermore, we observed that SMCs of human atherosclerotic lesions exhibited decreased nuclear FAK, which was associated with increased DNMT3A levels and decreased contractile gene expression. Conclusions: This study reveals that nuclear FAK induced by FAK catalytic inhibition specifically suppresses DNMT3A expression in injured vessels resulting in maintaining SMC differentiation by promoting the contractile gene expression. Thus, FAK inhibitors may provide a new treatment option to block SMC phenotypic switching during vascular remodeling and atherosclerosis.
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Affiliation(s)
- Kyuho Jeong
- Biochemistry and Molecular Biology, University of South Alabama College of Medicine, UNITED STATES
| | - James M Murphy
- Biochemistry and Molecular Biology, University of South Alabama College of Medicine, UNITED STATES
| | - Jung-Hyun Kim
- Biochemistry and Molecular Biology, University of South Alabama College of Medicine, UNITED STATES
| | | | - Hyeonsoo Park
- Biochemistry and Molecular Biology, University of South Alabama College of Medicine, KOREA, REPUBLIC OF
| | - Yelitza Rodriguez
- Biochemistry and Molecular Biology, University of South Alabama College of Medicine, UNITED STATES
| | - Chungsik Choi
- Physiology, University of South Alabama College of Medicine, UNITED STATES
| | - Jun-Sub Kim
- Biotechnology, Korea National University of Transportation, KOREA, REPUBLIC OF
| | - Sangwon Park
- Pharmacology, Gyeongsang National University, KOREA, REPUBLIC OF
| | - Hyun Joon Kim
- Anatomy and Convergence Medical Sciences, Gyeongsang National University
| | - Jonathan G Scammell
- Comparative Medicine, University of South Alabama College of Medicine, UNITED STATES
| | - David S Weber
- Physiology and Cell Biology, University of South Alabama College of Medicine, UNITED STATES
| | - Richard E Honkanen
- Biochemistry and Molecualr Biology, University of South Alabama College of Medicine, UNITED STATES
| | - David D Schlaepfer
- Obstetrics, Gynecology, and Reproductive Medicine, University of California, San Diego Moores Cancer Center, UNITED STATES
| | | | - Ssang-Taek Steve Lim
- Biochemistry and Molecular Biology, University of South Alabama College of Medicine, UNITED STATES
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Yang Y, Wang D, Wan J, Ran F, Yang L, Chen S, Wang F, Liu S, Dai X, Zhou P, Wang P. The role of transient receptor potential ankyrin 1 in age-related endothelial dysfunction. Exp Gerontol 2021; 154:111517. [PMID: 34419618 DOI: 10.1016/j.exger.2021.111517] [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] [Received: 07/06/2021] [Accepted: 08/10/2021] [Indexed: 10/20/2022]
Abstract
Oxidative stress plays a key role in age-related vascular disease. The present study aimed to investigate the role of an antioxidant channel, transient receptor potential ankyrin 1 (TRPA1), in age-related endothelial dysfunction. Human umbilical vein endothelial cells (HUVECs) were grown to induce replicative senescence, and 6-month-old young, 12-month-old middle-aged, and 24-month-old aged mice were used. TRPA1 was downregulated in senescent HUVECs, so were endothelial nitric oxide synthase (eNOS), nuclear factor erythroid 2-related factor 2 (Nrf2), and uncoupling protein 2 (UCP2). Activating TRPA1 with cinnamaldehyde prevented downregulation of eNOS, Nrf2, and UCP2, inhibited superoxide production and apoptosis, and preserved nitric oxide bioavailability in senescent HUVECs. TRPA1, phosphorylated eNOS, Nrf2 and UCP2 were significantly downregulated in aged aortas compared with young aortas after a compensatory upregulation in middle-aged aortas. Dietary administration of cinnamaldehyde for 12 months prevented mitochondrial dysfunction, improved endothelium-dependent relaxation, and increased expression of eNOS, Nrf2, and UCP2 in aged aortas. Importantly, the effects of cinnamaldehyde can be blocked by a TRPA1 antagonist HC-030031. These findings suggest that TRPA1 may play a critical role in age-related endothelial dysfunction and may become a therapeutic target for the treatment and prevention of age-related vascular disease.
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Affiliation(s)
- Yi Yang
- Department of Cardiology, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, China; Department of Cardiology, Key Laboratory of Aging and Vascular Homeostasis of Sichuan Higher Education Institutes, Chengdu, Sichuan 610500, China
| | - Dan Wang
- Department of Cardiology, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, China; Department of Cardiology, Key Laboratory of Aging and Vascular Homeostasis of Sichuan Higher Education Institutes, Chengdu, Sichuan 610500, China
| | - Jindong Wan
- Department of Cardiology, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, China; Department of Cardiology, Key Laboratory of Aging and Vascular Homeostasis of Sichuan Higher Education Institutes, Chengdu, Sichuan 610500, China
| | - Fei Ran
- Department of Cardiology, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, China; Department of Cardiology, Key Laboratory of Aging and Vascular Homeostasis of Sichuan Higher Education Institutes, Chengdu, Sichuan 610500, China
| | - Lun Yang
- Department of Cardiology, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, China; Department of Cardiology, Key Laboratory of Aging and Vascular Homeostasis of Sichuan Higher Education Institutes, Chengdu, Sichuan 610500, China
| | - Shizhao Chen
- Department of Cardiology, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, China; Department of Cardiology, Key Laboratory of Aging and Vascular Homeostasis of Sichuan Higher Education Institutes, Chengdu, Sichuan 610500, China
| | - Fang Wang
- Department of Cardiology, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, China; Department of Cardiology, Key Laboratory of Aging and Vascular Homeostasis of Sichuan Higher Education Institutes, Chengdu, Sichuan 610500, China
| | - Sen Liu
- Department of Cardiology, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, China; Department of Cardiology, Key Laboratory of Aging and Vascular Homeostasis of Sichuan Higher Education Institutes, Chengdu, Sichuan 610500, China
| | - Xiaozhen Dai
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, Sichuan 610500, China
| | - Peng Zhou
- Department of Cardiology, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, China; Department of Cardiology, Key Laboratory of Aging and Vascular Homeostasis of Sichuan Higher Education Institutes, Chengdu, Sichuan 610500, China
| | - Peijian Wang
- Department of Cardiology, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, China; Department of Cardiology, Key Laboratory of Aging and Vascular Homeostasis of Sichuan Higher Education Institutes, Chengdu, Sichuan 610500, China.
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Qian W, Zheng ZQ, Nie JG, Liu LJ, Meng XZ, Sun H, Xiao FM, Kang T. LncRNA SNHG12 alleviates hypertensive vascular endothelial injury through miR-25-3p/SIRT6 pathway. J Leukoc Biol 2021; 110:651-661. [PMID: 33464650 DOI: 10.1002/jlb.1a0820-501r] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 11/26/2020] [Accepted: 12/12/2020] [Indexed: 01/08/2023] Open
Abstract
The objective of this study was to find the role of LncRNA SNHG12 in the regulation of hypertensive vascular endothelial injury. LncRNA SNHG12 and miR-25-3p expression were detected by quantitative RT-PCR. Protein levels of Sirtuin 6 (SIRT6), endothelial cell (EC) senescence markers p16 and p21, and EC marker CD31 were measured by Western blot. The apoptosis of HUVECs was detected by flow cytometry. The binding between LncRNA SNHG12 and miR-25-3p was verified by dual luciferase reporter gene assay and RNA pull-down assay. As a result, LncRNA SNHG12 was down-regulated in aortic primary ECs isolated from Ang II-induced hypertensive mice and 1 kidney/deoxycorticosterone acetate/salt-induced hypertensive mice. In Ang II-treated HUVECs, the expression level of SNHG12 was reduced and the overexpression of SNHG12 inhibited EC senescence markers p16 and p21 expressions, the apoptosis of HUVECs, and caspase-3 activity. Further investigation confirmed that LncRNA SNHG12 bound to miR-25-3p, and negatively regulated miR-25-3p expression. MiR-25-3p directly targeted SIRT6 and negatively regulated SIRT6 expression. In addition, SNHG12 overexpression inhibited Ang II-induced HUVECs injury through regulating miR-25-3p. Finally, in vivo experiments showed LncRNA SNHG12 overexpression alleviated vascular endothelial injury in Ang II-induced hypertensive mice. In conclusion, LncRNA SNHG12 alleviates vascular endothelial injury induced by hypertension through miR-25-3p/SIRT6 pathway.
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Affiliation(s)
- Wei Qian
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Ze-Qi Zheng
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jun-Gang Nie
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Li-Juan Liu
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xiang-Zhu Meng
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hong Sun
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Feng-Ming Xiao
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Ting Kang
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
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EphA2 signaling within integrin adhesions regulates fibrillar adhesion elongation and fibronectin deposition. Matrix Biol 2021; 103-104:1-21. [PMID: 34537369 DOI: 10.1016/j.matbio.2021.09.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 09/01/2021] [Accepted: 09/09/2021] [Indexed: 12/28/2022]
Abstract
The multifunctional glycoprotein fibronectin influences several crucial cellular processes and contributes to multiple pathologies. While a link exists between fibronectin-associated pathologies and the receptor tyrosine kinase EphA2, the mechanism by which EphA2 promotes fibronectin matrix remodeling remains unknown. We previously demonstrated that EphA2 deletion reduces smooth muscle fibronectin deposition and blunts fibronectin deposition in atherosclerosis without influencing fibronectin expression. We now show that EphA2 expression is required for contractility-dependent elongation of tensin- and α5β1 integrin-rich fibrillar adhesions that drive fibronectin fibrillogenesis. Mechanistically, EphA2 localizes to integrin adhesions where focal adhesion kinase mediates ligand-independent Y772 phosphorylation, and mutation of this site significantly blunts fibrillar adhesion length. EphA2 deficiency decreases smooth muscle cell contractility by enhancing p190RhoGAP activation and reducing RhoA activity, whereas stimulating RhoA signaling in EphA2 deficient cells rescues fibrillar adhesion elongation. Together, these data identify EphA2 as a novel regulator of fibrillar adhesion elongation and provide the first data identifying a role for EphA2 signaling in integrin adhesions.
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Coagulation, Vascular Morphology, and Vasculogenesis in Spinal Ligament Ossification Model Mice. Spine (Phila Pa 1976) 2021; 46:E802-E809. [PMID: 33337674 DOI: 10.1097/brs.0000000000003891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN In vivo studies of the vascular system in ossification of the posterior longitudinal ligament (OPLL) model mice. OBJECTIVE The aim of this study was to investigate blood coagulability, vascular morphology, and vasculogenesis capability, known as venous thromboembolism (VTE) risk factors in the ossification model, tiptoe walking (ttw) mice. SUMMARY OF BACKGROUND DATA Patients with OPLL are more likely to develop VTE after spinal cord injury. Capillary mesh invasion of spinal ligaments precedes spinal ligament ossification in ttw mice. Investigation on vascular systems of ttw mice may contribute to clarifying its pathology. METHODS Coagulability of blood samples from ttw and C57BL/6 (WT) mice were evaluated at 8, 16, and 24 weeks of age. Vascular morphology was assessed from a Hematoxylin-Eosin stained section by measuring vessel area. A tube formation assay was performed with endothelial cells isolated from the aorta to assess vasculogenesis. RESULTS Prothrombin time was significantly shorter in ttw mice than in WT at 8 and 16 weeks. Fibrinogen had a greater increase in ttw mice than in WT at 16 weeks. The vascular area and vascular wall area were significantly smaller in ttw mice than in WT at all timepoints. The ratio of vascular wall area to vascular area was significantly smaller in ttw mice than in WT at 24 weeks. The endothelial cells from ttw mice formed significantly higher numbers of total branching points than WT cells. CONCLUSION Ossification model mice had impaired blood coagulation and vascular morphology and high capacity for vasculogenesis. With regard to the pathogenesis of VTE, ttw mice harbor an environment that promotes the development of VTE.Level of Evidence: N/A.
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Probing tissue transglutaminase mediated vascular smooth muscle cell aging using a novel transamidation-deficient Tgm2-C277S mouse model. Cell Death Discov 2021; 7:197. [PMID: 34326316 PMCID: PMC8322091 DOI: 10.1038/s41420-021-00543-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 05/21/2021] [Accepted: 05/29/2021] [Indexed: 02/07/2023] Open
Abstract
Tissue transglutaminase (TG2), a multifunctional protein of the transglutaminase family, has putative transamidation-independent functions in aging-associated vascular stiffening and dysfunction. Developing preclinical models will be critical to fully understand the physiologic relevance of TG2's transamidation-independent activity and to identify the specific function of TG2 for therapeutic targeting. Therefore, in this study, we harnessed CRISPR-Cas9 gene editing technology to introduce a mutation at cysteine 277 in the active site of the mouse Tgm2 gene. Heterozygous and homozygous Tgm2-C277S mice were phenotypically normal and were born at the expected Mendelian frequency. TG2 protein was ubiquitously expressed in the Tgm2-C277S mice at levels similar to those of wild-type (WT) mice. In the Tgm2-C277S mice, TG2 transglutaminase function was successfully obliterated, but the transamidation-independent functions ascribed to GTP, fibronectin, and integrin binding were preserved. In vitro, a remodeling stimulus led to the significant loss of vascular compliance in WT mice, but not in the Tgm2-C277S or TG2-/- mice. Vascular stiffness increased with age in WT mice, as measured by pulse-wave velocity and tensile testing. Tgm2-C277S mice were protected from age-associated vascular stiffening, and TG2 knockout yielded further protection. Together, these studies show that TG2 contributes significantly to overall vascular modulus and vasoreactivity independent of its transamidation function, but that transamidation activity is a significant cause of vascular matrix stiffening during aging. Finally, the Tgm2-C277S mice can be used for in vivo studies to explore the transamidation-independent roles of TG2 in physiology and pathophysiology.
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Maruyama K, Kidoya H, Takemura N, Sugisawa E, Takeuchi O, Kondo T, Eid MMA, Tanaka H, Martino MM, Takakura N, Takayama Y, Akira S, Vandenbon A, Kumagai Y. Zinc Finger Protein St18 Protects against Septic Death by Inhibiting VEGF-A from Macrophages. Cell Rep 2021; 32:107906. [PMID: 32668247 DOI: 10.1016/j.celrep.2020.107906] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 04/22/2020] [Accepted: 06/23/2020] [Indexed: 12/20/2022] Open
Abstract
Zinc finger protein St18 was initially reported as candidate tumor suppressor gene, and also suggested that fibroblast St18 positively regulates NF-κB activation. Despite the pleiotropic functions of St18, little is known about its roles in macrophages. Here, we report that myeloid St18 is a potent inhibitor of VEGF-A. Mice lacking St18 in myeloid lineages exhibit increased retinal vasculature with enhanced serum VEGF-A concentrations. Despite the normal activation of NF-κB target genes, these mice are highly susceptible to LPS-induced shock, polymicrobial sepsis, and experimental colitis, accompanied by enhanced vascular and intestinal leakage. Pharmacological inhibition of VEGF signaling rescued the high mortality rate of myeloid-specific St18-deficient mice in response to inflammation. Mechanistically, St18 directly binds to Sp1 and attenuates its activity, leading to the suppression of Sp1 target gene VEGF-A. Using mouse genetic and pharmacological models, we reveal myeloid St18 as a critical septic death protector.
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Affiliation(s)
- Kenta Maruyama
- WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan; Division of Cell Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Aichi 444-8787, Japan.
| | - Hiroyasu Kidoya
- Department of Signal Transduction, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Naoki Takemura
- Department of Mucosal Immunology, School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Erika Sugisawa
- WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Osamu Takeuchi
- Laboratory of Infection and Prevention, Department of Virus Research, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Takeshi Kondo
- Department of Biochemistry, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita 15, Nishi 7, Kita-ku, Sapporo, Hokkaido 060-8636, Japan
| | | | - Hiroki Tanaka
- WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Mikaël M Martino
- European Molecular Biology Laboratory Australia, Australian Regenerative Medicine Institute, Monash University, Melbourne, VIC 3800, Australia
| | - Nobuyuki Takakura
- Department of Signal Transduction, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Yasunori Takayama
- Division of Cell Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Aichi 444-8787, Japan; Department of Physiological Sciences, Graduate University for Advanced Studies, Aichi 444-8787, Japan
| | - Shizuo Akira
- WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Alexis Vandenbon
- Laboratory of Infection and Prevention, Department of Virus Research, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Yutaro Kumagai
- Biotechnology Research Institute for Drug Discovery, Department of Life Science and Biotechnology, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8565, Japan
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Huang S, Chen G, Sun J, Chen Y, Wang N, Dong Y, Shen E, Hu Z, Gong W, Jin L, Cong W. Histone deacetylase 3 inhibition alleviates type 2 diabetes mellitus-induced endothelial dysfunction via Nrf2. Cell Commun Signal 2021; 19:35. [PMID: 33736642 PMCID: PMC7977318 DOI: 10.1186/s12964-020-00681-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 11/02/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND The mechanism underlying endothelial dysfunction leading to cardiovascular disease in type 2 diabetes mellitus (T2DM) remains unclear. Here, we show that inhibition of histone deacetylase 3 (HDAC3) reduced inflammation and oxidative stress by regulating nuclear factor-E2-related factor 2 (Nrf2), which mediates the expression of anti-inflammatory- and pro-survival-related genes in the vascular endothelium, thereby improving endothelial function. METHODS Nrf2 knockout (Nrf2 KO) C57BL/6 background mice, diabetic db/db mice, and control db/m mice were used to investigate the relationship between HDAC3 and Nrf2 in the endothelium in vivo. Human umbilical vein endothelial cells (HUVECs) cultured under high glucose-palmitic acid (HG-PA) conditions were used to explore the role of Kelch-like ECH-associated protein 1 (Keap1) -Nrf2-NAPDH oxidase 4 (Nox4) redox signaling in the vascular endothelium in vitro. Activity assays, immunofluorescence, western blotting, qRT-PCR, and immunoprecipitation assays were used to examine the effect of HDAC3 inhibition on inflammation, reactive oxygen species (ROS) production, and endothelial impairment, as well as the activity of Nrf2-related molecules. RESULTS HDAC3 activity, but not its expression, was increased in db/db mice. This resulted in de-endothelialization and increased oxidative stress and pro-inflammatory marker expression in cells treated with the HDAC3 inhibitor RGFP966, which activated Nrf2 signaling. HDAC3 silencing decreased ROS production, inflammation, and damage-associated tube formation in HG-PA-treated HUVECs. The underlying mechanism involved the Keap1-Nrf2-Nox4 signaling pathway. CONCLUSION The results of this study suggest the potential of HDAC3 as a therapeutic target for the treatment of endothelial dysfunction in T2DM. Video Abstract.
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Affiliation(s)
- Shuai Huang
- Zhejiang Provincial Key Laboratory of Interventional Pulmonology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 People’s Republic of China
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000 People’s Republic of China
| | - Gen Chen
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000 People’s Republic of China
| | - Jia Sun
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000 People’s Republic of China
| | - Yunjie Chen
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000 People’s Republic of China
| | - Nan Wang
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000 People’s Republic of China
| | - Yetong Dong
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000 People’s Republic of China
| | - Enzhao Shen
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000 People’s Republic of China
| | - Zhicheng Hu
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000 People’s Republic of China
| | - Wenjie Gong
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000 People’s Republic of China
| | - Litai Jin
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000 People’s Republic of China
| | - Weitao Cong
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325000 People’s Republic of China
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Jiang M, Huang S, Duan W, Liu Q, Lei M. Alpha-mangostin improves endothelial dysfunction in db/db mice through inhibition of aSMase/ceramide pathway. J Cell Mol Med 2021; 25:3601-3609. [PMID: 33719188 PMCID: PMC8034454 DOI: 10.1111/jcmm.16456] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 02/25/2021] [Accepted: 03/01/2021] [Indexed: 12/16/2022] Open
Abstract
Diabetic vascular complications are the leading causes of death and disability in patients with diabetes. Alpha-mangostin has been reported to have anti-diabetic capacity in recent years. Here, we investigated the protective function of alpha-mangostin on endothelium in vitro and in vivo experiments. We also observed that alpha-mangostin improved impaired endothelium-dependent vasodilation (EDV) of diabetic animals while it limited the aSMase/ceramide pathway and up-regulated eNOS/NO pathway in aortas from diabetic mice. Meanwhile, alpha-mangostin inhibited elevated aSMase/ceramide pathway and reversed impaired EDV induced by high glucose in isolated mouse aortas. In addition, alpha-mangostin increased phosphorylation of eNOS and NO production in high glucose-treated aortas. Alpha-mangostin normalized high glucose-induced activation of aSMase/ceramide pathway and improved eNOS/NO pathway in endothelial cells with high glucose. In conclusion, alpha-mangostin regulates eNOS/NO pathway and improves EDV in aortas of diabetic mice through inhibiting aSMase activity and endogenous ceramide accumulation.
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Affiliation(s)
- Meng Jiang
- Xiangya Hospital of Central South University, Changsha, China
| | - Shanya Huang
- Xiangya Hospital of Central South University, Changsha, China
| | - Wang Duan
- Xiangya Hospital of Central South University, Changsha, China
| | - Qiaoshu Liu
- Xiangya Hospital of Central South University, Changsha, China
| | - Minxiang Lei
- Xiangya Hospital of Central South University, Changsha, China
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Murphy PA, Jailkhani N, Nicholas SA, Del Rosario AM, Balsbaugh JL, Begum S, Kimble A, Hynes RO. Alternative Splicing of FN (Fibronectin) Regulates the Composition of the Arterial Wall Under Low Flow. Arterioscler Thromb Vasc Biol 2021; 41:e18-e32. [PMID: 33207933 PMCID: PMC8428803 DOI: 10.1161/atvbaha.120.314013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Exposure of the arterial endothelium to low and disturbed flow is a risk factor for the erosion and rupture of atherosclerotic plaques and aneurysms. Circulating and locally produced proteins are known to contribute to an altered composition of the extracellular matrix at the site of lesions, and to contribute to inflammatory processes within the lesions. We have previously shown that alternative splicing of FN (fibronectin) protects against flow-induced hemorrhage. However, the impact of alternative splicing of FN on extracellular matrix composition remains unknown. Approach and Results: Here, we perform quantitative proteomic analysis of the matrisome of murine carotid arteries in mice deficient in the production of FN splice isoforms containing alternative exons EIIIA and EIIIB (FN-EIIIAB null) after exposure to low and disturbed flow in vivo. We also examine serum-derived and endothelial-cell contributions to the matrisome in a simplified in vitro system. We found flow-induced differences in the carotid artery matrisome that were impaired in FN-EIIIAB null mice. One of the most interesting differences was reduced recruitment of FBLN1 (fibulin-1), abundant in blood and not locally produced in the intima. This defect was validated in our in vitro assay, where FBLN1 recruitment from serum was impaired by the absence of these alternatively spliced segments. CONCLUSIONS Our results reveal the extent of the dynamic alterations in the matrisome in the acute response to low and disturbed flow and show how changes in the splicing of FN, a common response in vascular inflammation and remodeling, can affect matrix composition.
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Affiliation(s)
- Patrick A. Murphy
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA 02139
- UCONN Health, Farmington, CT 06030
| | - Noor Jailkhani
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA 02139
| | | | | | | | - Shahinoor Begum
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA 02139
- Howard Hughes Medical Institute, Chevy Chase, MD 20815
| | | | - Richard O. Hynes
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA 02139
- Howard Hughes Medical Institute, Chevy Chase, MD 20815
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A coaxially structured trilayered gallic acid-based antioxidant vascular graft for treating coronary artery disease. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2020.110203] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Yuan X, Bhat OM, Samidurai A, Das A, Zhang Y, Li PL. Reversal of Endothelial Extracellular Vesicle-Induced Smooth Muscle Phenotype Transition by Hypercholesterolemia Stimulation: Role of NLRP3 Inflammasome Activation. Front Cell Dev Biol 2020; 8:597423. [PMID: 33409276 PMCID: PMC7779768 DOI: 10.3389/fcell.2020.597423] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 12/04/2020] [Indexed: 01/18/2023] Open
Abstract
Recent studies reported that vascular endothelial cells (ECs) secrete NLR family pyrin domain-containing 3 (NLRP3) inflammasome products such as interleukin-1β (IL-1β) via extracellular vesicles (EVs) under various pathological conditions. EVs represent one of the critical mechanisms mediating the cell-to-cell communication between ECs and vascular smooth muscle cells (VSMCs). However, whether or not the inflammasome-dependent EVs directly participate in the regulation of VSMC function remains unknown. In the present study, we found that in cultured carotid ECs, atherogenic stimulation by oxysterol 7-ketocholesterol (7-Ket) induced NLRP3 inflammasome formation and activation, reduced lysosome-multivesicular bodies (MVBs) fusion, and increased secretion of EVs that contain inflammasome product IL-1β. These EC-derived IL-1β-containing EVs promoted synthetic phenotype transition of co-cultured VSMCs, whereas EVs from unstimulated ECs have the opposite effects. Moreover, acid ceramidase (AC) deficiency or lysosome inhibition further exaggerated the 7-Ket-induced release of IL-1β-containing EVs in ECs. Using a Western diet (WD)-induced hypercholesterolemia mouse model, we found that endothelial-specific AC gene knockout mice (Asah1fl/fl/ECCre) exhibited augmented WD-induced EV secretion with IL-1β and more significantly decreased the interaction of MVBs with lysosomes in the carotid arterial wall compared to their wild-type littermates (WT/WT). The endothelial AC deficiency in Asah1fl/fl/ECCre mice also resulted in enhanced VSMC phenotype transition and accelerated neointima formation. Together, these results suggest that NLRP3 inflammasome-dependent IL-1β production during hypercholesterolemia promotes VSMC phenotype transition to synthetic status via EV machinery, which is controlled by lysosomal AC activity. Our findings provide novel mechanistic insights into understanding the pathogenic role of endothelial NLRP3 inflammasome in vascular injury through EV-mediated EC-to-VSMC regulation.
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Affiliation(s)
- Xinxu Yuan
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Owais M Bhat
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Arun Samidurai
- Pauley Heart Center, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Anindita Das
- Pauley Heart Center, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Yang Zhang
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, United States
| | - Pin-Lan Li
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
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Luo YF, Wan XX, Zhao LL, Guo Z, Shen RT, Zeng PY, Wang LH, Yuan JJ, Yang WJ, Yue C, Mo ZH. MicroRNA-139-5p upregulation is associated with diabetic endothelial cell dysfunction by targeting c-jun. Aging (Albany NY) 2020; 13:1186-1211. [PMID: 33293476 PMCID: PMC7835005 DOI: 10.18632/aging.202257] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 10/03/2020] [Indexed: 12/28/2022]
Abstract
Dysfunction of endothelial cells (ECs) and their progenitor cells is an important feature of diabetic vascular disease. MicroRNA (miR)-139-5p is involved in inhibiting the metastasis and progression of diverse malignancies. However, the role of miR-139-5p in ECs still remains unclarified. Here we demonstrated that miR-139-5p expression was elevated in endothelial colony-forming cells (ECFCs) isolated from patients with diabetes, ECs derived from the aorta of diabetic rodents, and human umbilical vein endothelial cells (HUVECs) cultured in high glucose media. MiR-139-5p mimics inhibited tube formation, migration, proliferation, and down-regulated expression of c-jun, vascular endothelial growth factor (VEGF), and platelet-derived growth factor (PDGF)-B, in ECFCs and HUVECs, respectively; moreover, miR-139-5p inhibitors reversed the tendency. Further, gain- and-loss function experiments and ChIP assay indicated that miR-139-5p regulate functions of ECFCs by targeting c-jun-VEGF/PDGF-B pathway. In vivo experiments (Matrigel plug assay and hindlimb ischemia model) showed that miR-139-5p downregulation further promoted ECFC-mediated angiogenesis and blood perfusion. In conclusion, diabetes-mediated high miR-139-5p expression inhibits the c-jun-VEGF/PDGF-B pathway, thus decreasing ECFCs migration, tube formation and proliferation, which subsequently reduces ECs survival. Therefore, miR-139-5p might be an important therapeutic target in the treatment of diabetic vasculopathy in the future.
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Affiliation(s)
- Yu-Fang Luo
- Department of Endocrinology, Third Xiangya Hospital of Central South University and Diabetic Foot Research Center of Central South University, Changsha 410013, Hunan Province, China
| | - Xin-Xing Wan
- Department of Endocrinology, Third Xiangya Hospital of Central South University and Diabetic Foot Research Center of Central South University, Changsha 410013, Hunan Province, China
| | - Li-Ling Zhao
- Department of Endocrinology, Third Xiangya Hospital of Central South University and Diabetic Foot Research Center of Central South University, Changsha 410013, Hunan Province, China
| | - Zi Guo
- Department of Endocrinology, Third Xiangya Hospital of Central South University and Diabetic Foot Research Center of Central South University, Changsha 410013, Hunan Province, China
| | - Rui-Ting Shen
- Key Laboratory of Hormones and Development (Ministry of Health), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, China
| | - Ping-Yu Zeng
- Center of Experimental Medicine, Third Xiangya Hospital of Central South University, Changsha 410013, Hunan Province, China
| | - Ling-Hao Wang
- Department of Endocrinology, Third Xiangya Hospital of Central South University and Diabetic Foot Research Center of Central South University, Changsha 410013, Hunan Province, China
| | - Jing-Jing Yuan
- Department of Endocrinology, Third Xiangya Hospital of Central South University and Diabetic Foot Research Center of Central South University, Changsha 410013, Hunan Province, China
| | - Wen-Jun Yang
- Department of Endocrinology, Third Xiangya Hospital of Central South University and Diabetic Foot Research Center of Central South University, Changsha 410013, Hunan Province, China
| | - Chun Yue
- Department of Endocrinology, Third Xiangya Hospital of Central South University and Diabetic Foot Research Center of Central South University, Changsha 410013, Hunan Province, China
| | - Zhao-Hui Mo
- Department of Endocrinology, Third Xiangya Hospital of Central South University and Diabetic Foot Research Center of Central South University, Changsha 410013, Hunan Province, China
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Bai T, Li M, Liu Y, Qiao Z, Wang Z. Inhibition of ferroptosis alleviates atherosclerosis through attenuating lipid peroxidation and endothelial dysfunction in mouse aortic endothelial cell. Free Radic Biol Med 2020; 160:92-102. [PMID: 32768568 DOI: 10.1016/j.freeradbiomed.2020.07.026] [Citation(s) in RCA: 250] [Impact Index Per Article: 62.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/24/2020] [Accepted: 07/22/2020] [Indexed: 12/19/2022]
Abstract
Atherosclerosis (AS) is the fundamental pathological state of many serious vascular diseases, characterized by disorders of lipid metabolism. Ferroptosis is a type of regulated cell death that is mainly mediated by iron-dependent lipid peroxidation. In this study, whether ferroptosis has occurred in AS and the potential effects of ferroptosis on AS were investigated. Ferroptosis inhibitor ferrostatin-1 (Fer-1) was administered to high-fat diet (HFD)-induced AS in ApoE-/- mice. The results showed that Fer-1 could alleviate AS lesion in HFD-fed ApoE-/- mice. Additionally, Fer-1 partially inhibited the iron accumulation, lipid peroxidation and reversed the expressions of ferroptosis indicators SLC7A11 and glutathione peroxidase 4 (GPX4) in HFD-fed ApoE-/- mice. Next, we evaluated the effects of inhibition of ferroptosis on oxidized-low density lipoprotein (ox-LDL)-induced mouse aortic endothelial cells (MAECs). Results showed that Fer-1 increased cell viability and reduced cell death in ox-LDL-treated MAECs. Moreover, Fer-1 decreased iron content and lipid peroxidation and up-regulated the levels of SLC7A11 and GPX4. Additionally, Fer-1 down-regulated the expressions of adhesion molecules and up-regulated eNOS expression. Iron chelator deferoxamine was used to demonstrate ferroptosis could be partially inhibited by iron complexation in ox-LDL-treated MAECs. Our results indicated that ferroptosis might occur during the initiation and development of AS. More importantly, inhibition of ferroptosis could alleviate AS through attenuating lipid peroxidation and endothelial dysfunction in AECs. Our findings might contribute to a deeper understanding regarding the pathological process of AS and provide a therapeutic target for AS.
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Affiliation(s)
- Tao Bai
- Department of Vascular and Endovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, PR China
| | - Mingxing Li
- Department of Vascular and Endovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, PR China
| | - Yuanfeng Liu
- Department of Vascular and Endovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, PR China
| | - Zhentao Qiao
- Department of Vascular and Endovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, PR China
| | - Zhiwei Wang
- Department of Vascular and Endovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, PR China.
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Qi L, Wu K, Shi S, Ji Q, Miao H, Bin Q. Thrombospondin-2 is upregulated in patients with aortic dissection and enhances angiotensin II-induced smooth muscle cell apoptosis. Exp Ther Med 2020; 20:150. [PMID: 33093888 PMCID: PMC7571314 DOI: 10.3892/etm.2020.9279] [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: 08/22/2019] [Accepted: 04/01/2020] [Indexed: 12/16/2022] Open
Abstract
Thrombospondin-2 (TSP-2) is an important extracellular matrix protein that is involved in a variety of cardiovascular diseases, including viral myocarditis and abdominal aortic aneurysm. The present study aimed to investigate TSP-2 expression in patients with aortic dissection (AD). Aortas were obtained from patients with AD and healthy donors, and TSP-2 expression level in all samples was measured by western blotting and immunofluorescence assays. Blood samples were also collected from patients with AD and non-AD (NAD) subjects. Circulating TSP-2, tumor necrosis factor (TNF)-α and interleukin (IL)-6 levels in each sample were detected using ELISAs. In addition, the effect of TSP-2 on angiotensin II (Ang II)-induced smooth muscle cell (SMC) apoptosis was assessed in vitro. Compared with healthy donors, aortic TSP-2 expression level was significantly increased in patients with AD. Furthermore, TSP-2 was secreted primarily by SMCs, but also by endothelial cells. TSP-2 plasma expression level was also elevated in patients with AD compared with non-AD subjects. Furthermore, TSP-2 serum expression level was positively correlated with TNF-α and IL-6 expression levels in patients with AD. In addition, recombinant mouse TSP-2 treatment increased Bax mRNA expression and decreased Bcl2 mRNA expression in Ang II-treated SMCs; however, the effects were reversed following treatment with the NF-κB p65 signaling pathway inhibitor JSH-23 or with the anti-TNF-α and anti-IL-6 neutralizing antibodies. The present study demonstrated that TSP-2 expression was increased in the aortic tissues and plasma of patients with AD. These findings suggested that TSP-2 may participate in the progression of AD by activating the NF-κB p65 signaling pathway and amplifying the inflammatory response.
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Affiliation(s)
- Liping Qi
- Department of Cardiology, The Second Clinical Center, Chinese People's Liberation Army General Hospital, Beijing 100853, P.R. China
| | - Kui Wu
- Emergency and Critical Care Center, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing Lab for Cardiovascular Precision Medicine, Beijing 100029, P.R. China
| | - Shutian Shi
- Emergency and Critical Care Center, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing Lab for Cardiovascular Precision Medicine, Beijing 100029, P.R. China
| | - Qingwei Ji
- Emergency and Critical Care Center, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing Lab for Cardiovascular Precision Medicine, Beijing 100029, P.R. China
| | - Huangtai Miao
- Emergency and Critical Care Center, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing Lab for Cardiovascular Precision Medicine, Beijing 100029, P.R. China
| | - Que Bin
- Emergency and Critical Care Center, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing Lab for Cardiovascular Precision Medicine, Beijing 100029, P.R. China
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Upregulation of miR-223 abrogates NLRP3 inflammasome-mediated pyroptosis to attenuate oxidized low-density lipoprotein (ox-LDL)-induced cell death in human vascular endothelial cells (ECs). In Vitro Cell Dev Biol Anim 2020; 56:670-679. [PMID: 32914384 DOI: 10.1007/s11626-020-00496-9] [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] [Received: 06/03/2020] [Accepted: 08/10/2020] [Indexed: 12/31/2022]
Abstract
MiR-223 is closely associated with pathogenesis of coronary artery disease (CAD); however, the molecular mechanisms are unclear. In the present study, the human vascular endothelial cells (ECs) were isolated from patients undergoing coronary artery bypass graft and treated with oxidized low-density lipoprotein (ox-LDL) to induce cellular CAD models in vitro. We found that ox-LDL inhibited cell proliferation and viability, and promoted cell apoptosis in ECs. Of note, ox-LDL promoted cell pyroptosis, and both the pyroptosis inhibitor necrosulfonamide (NSA) and NLRP3 ablation restored cell viability in ECs treated with ox-LDL, indicating that ox-LDL induced EC death by triggering cell pyroptosis. In addition, miR-223 was downregulated by ox-LDL in ECs, and miR-223 overexpression rescued cell viability in ECs treated with ox-LDL. Interestingly, there existed targeting sites in miR-223 and 3' untranslated regions (3' UTRs) of NLRP3 mRNA, and further experiments validated that miR-223 negatively regulated NLRP3 expressions in ECs at both transcriptional and translational levels. Finally, we verified that upregulation of NLRP3 abrogated the protective effects of miR-223 overexpression on ox-LDL-treated ECs. Collectively, this in vitro study proved that overexpression of miR-223 protected ox-LDL-stimulated ECs from death through inactivating NLRP3 inflammasome-mediated pyroptotic cell death.
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Higashi Y, Sukhanov S, Shai SY, Danchuk S, Snarski P, Li Z, Hou X, Hamblin MH, Woods TC, Wang M, Wang D, Yu H, Korthuis RJ, Yoshida T, Delafontaine P. Endothelial deficiency of insulin-like growth factor-1 receptor reduces endothelial barrier function and promotes atherosclerosis in Apoe-deficient mice. Am J Physiol Heart Circ Physiol 2020; 319:H730-H743. [PMID: 32795184 DOI: 10.1152/ajpheart.00064.2020] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Insulin-like growth factor-1 (IGF-1) decreases atherosclerosis in apolipoprotein E (Apoe)-deficient mice when administered systemically. However, mechanisms for its atheroprotective effect are not fully understood. We generated endothelium-specific IGF-1 receptor (IGF1R)-deficient mice on an Apoe-deficient background to assess effects of IGF-1 on the endothelium in the context of hyperlipidemia-induced atherosclerosis. Endothelial deficiency of IGF1R promoted atherosclerotic burden, when animals were fed on a high-fat diet for 12 wk or normal chow for 12 mo. Under the normal chow feeding condition, the vascular relaxation response to acetylcholine was increased in the endothelial IGF1R-deficient aorta; however, feeding of a high-fat diet substantially attenuated the relaxation response, and there was no difference between endothelial IGF1R-deficient and control mice. The endothelium and its intercellular junctions provide a barrier function to the vasculature. In human aortic endothelial cells, IGF-1 upregulated occludin, claudin 5, VE-cadherin, JAM-A, and CD31 expression levels, and vice versa, specific IGF1R inhibitor, picropodophyllin, an IGF1R-neutralizing antibody (αIR3), or siRNA to IGF1R abolished the IGF-1 effects on junction and adherens proteins, suggesting that IGF-1 promoted endothelial barrier function. Moreover, endothelial transwell permeability assays indicated that inhibition of IGF-1 signaling elevated solute permeability through the monolayer of human aortic endothelial cells. In summary, endothelial IGF1R deficiency increases atherosclerosis, and IGF-1 positively regulates tight junction protein and adherens junction protein levels and endothelial barrier function. Our findings suggest that the elevation of the endothelial junction protein level is, at least in part, the mechanism for antiatherogenic effects of IGF-1.NEW & NOTEWORTHY Endothelial insulin-like growth factor-1 (IGF-1) receptor deficiency significantly elevated atherosclerotic burden in apolipoprotein E-deficient mice, mediated at least in part by downregulation of intercellular junction proteins and, thus, elevated endothelial permeability. This study revealed a novel role for IGF-1 in supporting endothelial barrier function. These findings suggest that IGF-1's ability to promote endothelial barrier function may offer a novel therapeutic strategy for vascular diseases such as atherosclerosis.
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Affiliation(s)
- Yusuke Higashi
- Department of Medicine, Tulane University School of Medicine, New Orleans, Louisiana
| | - Sergiy Sukhanov
- Department of Medicine, Tulane University School of Medicine, New Orleans, Louisiana
| | - Shaw-Yung Shai
- Department of Medicine, Tulane University School of Medicine, New Orleans, Louisiana
| | - Svitlana Danchuk
- Department of Medicine, Tulane University School of Medicine, New Orleans, Louisiana
| | - Patricia Snarski
- Department of Medicine, Tulane University School of Medicine, New Orleans, Louisiana
| | - Zhaohui Li
- Department of Radiology, University of Missouri School of Medicine, Columbia, Missouri
| | - Xuwei Hou
- Department of Medicine, University of Missouri School of Medicine, Columbia, Missouri
| | - Milton H Hamblin
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana
| | - T Cooper Woods
- Department of Physiology, Tulane University School of Medicine, New Orleans, Louisiana
| | - Meifang Wang
- Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, Missouri
| | - Derek Wang
- Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, Missouri
| | - Hong Yu
- Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, Missouri
| | - Ronald J Korthuis
- Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, Missouri
| | - Tadashi Yoshida
- Department of Medicine, Tulane University School of Medicine, New Orleans, Louisiana
| | - Patrice Delafontaine
- Department of Medicine, Tulane University School of Medicine, New Orleans, Louisiana
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Nargesi AA, Zhu XY, Saadiq IM, Jordan KL, Lerman A, Lerman LO, Eirin A. Experimental Renovascular Disease Induces Endothelial Cell Mitochondrial Damage and Impairs Endothelium-Dependent Relaxation of Renal Artery Segments. Am J Hypertens 2020; 33:765-774. [PMID: 32179886 DOI: 10.1093/ajh/hpaa047] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 02/27/2020] [Accepted: 03/13/2020] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Mitochondria modulate endothelial cell (EC) function, but may be damaged during renal disease. We hypothesized that the ischemic and metabolic constituents of swine renovascular disease (RVD) induce mitochondrial damage and impair the function of renal artery ECs. METHODS Pigs were studied after 16 weeks of metabolic syndrome (MetS), renal artery stenosis (RAS), or MetS + RAS, and Lean pigs served as control (n = 6 each). Mitochondrial morphology, homeostasis, and function were measured in isolated primary stenotic-kidney artery ECs. EC functions were assessed in vitro, whereas vasoreactivity of renal artery segments was characterized in organ baths. RESULTS Lean + RAS and MetS + RAS ECs showed increased mitochondrial area and decreased matrix density. Mitochondrial biogenesis was impaired in MetS and MetS + RAS compared with their respective controls. Mitochondrial membrane potential similarly decreased in MetS, Lean + RAS, and MetS + RAS groups, whereas production of reactive oxygen species increased in MetS vs. Lean, but further increased in both RAS groups. EC tube formation was impaired in MetS, RAS, and MetS + RAS vs. Lean, but EC proliferation and endothelial-dependent relaxation of renal artery segments were blunted in MetS vs. Lean, but further attenuated in Lean + RAS and MetS + RAS. CONCLUSIONS MetS and RAS damage mitochondria in pig renal artery ECs, which may impair EC function. Coexisting MetS and RAS did not aggravate EC mitochondrial damage in the short time of our in vivo studies, suggesting that mitochondrial injury is associated with impaired renal artery EC function.
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Affiliation(s)
- Arash Aghajani Nargesi
- Department of Internal Medicine, Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA
| | - Xiang-Yang Zhu
- Department of Internal Medicine, Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA
| | - Ishran M Saadiq
- Department of Internal Medicine, Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA
| | - Kyra L Jordan
- Department of Internal Medicine, Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA
| | - Amir Lerman
- Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota, USA
| | - Lilach O Lerman
- Department of Internal Medicine, Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA
- Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota, USA
| | - Alfonso Eirin
- Department of Internal Medicine, Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA
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Liu L, Song S, Zhang YP, Wang D, Zhou Z, Chen Y, Jin X, Hu CF, Shen CX. Amphiregulin promotes cardiac fibrosis post myocardial infarction by inducing the endothelial-mesenchymal transition via the EGFR pathway in endothelial cells. Exp Cell Res 2020; 390:111950. [PMID: 32188578 DOI: 10.1016/j.yexcr.2020.111950] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 03/03/2020] [Accepted: 03/04/2020] [Indexed: 12/12/2022]
Abstract
The endothelial-mesenchymal transition (EndMT) plays a key role in the development of cardiac fibrosis (CF) after acute myocardial infarction (AMI). The results of our previous study showed that amphiregulin (AR) expression was enhanced after MI. However, the role of AR on EndMT post MI remains unknown. This study aimed to elucidate the impact of AR on EndMT post MI and the associated molecular mechanisms. AR expression was markedly enhanced in infarct border area post MI, and endothelial cells were one of the primary cell sources of AR secretion. Stimulation with AR promoted endothelial cell proliferation, invasion, migration, collagen synthesis and EndMT. In addition, EGFR and downstream gene expression was significantly enhanced. In vivo, EndMT was significantly inhibited after lentivirus-AR-shRNA was delivered to the myocardium post MI. In addition, silencing AR ameliorated cardiac function by decreasing the extent of CF. Furthermore, the levels of EGFR pathway components in endothelial cells extracted from infarct border myocardium were all significantly decreased in lentivirus-AR-shRNA-treated MI mice. Our results demonstrate that AR induces CF post MI by enhancing EndMT in endothelial cells. Thus, targeting the regulation of AR may provide a potentially novel therapeutic option for CF after MI.
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Affiliation(s)
- Liang Liu
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Shuai Song
- Department of Cardiology, Affiliated Xinhua Hospital, Shanghai Jiao Tong University (SJTU) School of Medicine, Shanghai, China
| | - Ya Ping Zhang
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Di Wang
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Zhong'e Zhou
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Yu Chen
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Xian Jin
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Cui Fen Hu
- Department of Ultrasound in Medicine, Minhang Hospital, Fudan University, Shanghai, China.
| | - Cheng Xing Shen
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.
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Fan W, Zhang R, Han D, Jiang Z, Li S, Zhang J, Li Y, Wang Y, Cao F. Reduced Sirtuin1 signalling exacerbates diabetic mice hindlimb ischaemia injury and inhibits the protective effect of a liver X receptor agonist. J Cell Mol Med 2020; 24:5476-5490. [PMID: 32286000 PMCID: PMC7214142 DOI: 10.1111/jcmm.15201] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 01/29/2020] [Accepted: 03/10/2020] [Indexed: 12/30/2022] Open
Abstract
Diabetes mellitus causes endothelial dysfunction, which further exacerbates peripheral arterial disease (PAD). Improving endothelial function via reducing endothelial oxidative stress (OS) may be a promising therapy for diabetic PAD. Activation of liver X receptor (LXR) inhibits excessive OS and provides protective effects on endothelial cells in diabetic individuals. Therefore, we investigated the effects of LXR agonist treatment on diabetic PAD with a focus on modulating endothelial OS. We used a streptozotocin‐induced diabetes mouse model combined with a hindlimb ischaemia (HLI) injury to mimic diabetic PAD, which was followed by LXR agonist treatment. In our study, the LXR agonist T0901317 protected against HLI injury in diabetic mice by attenuating endothelial OS and stimulating angiogenesis. However, a deficiency in endothelial Sirtuin1 (SIRT1) largely inhibited the therapeutic effects of T0901317. Furthermore, we found that the underlying therapeutic mechanisms of T0901317 were related to SIRT1 and non‐SIRT1 signalling, and the isoform LXRβ was involved in LXR agonist‐elicited SIRT1 regulation. In conclusion, LXR agonist treatment protected against HLI injury in diabetic mice via mitigating endothelial OS and stimulating cellular viability and angiogenesis by LXRβ, which elicited both SIRT1‐mediated and non‐SIRT1‐mediated signalling pathways. Therefore, LXR agonist treatment may be a promising therapeutic strategy for diabetic PAD.
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Affiliation(s)
- Wensi Fan
- Department of Cardiology & National Clinical Research Center for Geriatric Diseases2nd Medical CenterChinese PLA General HospitalBeijingChina
| | - Ran Zhang
- Department of Cardiology1st Medical CenterChinese PLA General HospitalBeijingChina
| | - Dong Han
- Department of CardiologyXijing HospitalFourth Military Medical UniversityXianChina
| | - Zhenhua Jiang
- Department of CardiologyXijing HospitalFourth Military Medical UniversityXianChina
| | - Shuang Li
- Department of CardiologyThe General Hospital of Western Theater Command (Chengdu Military General Hospital)Chengdu610083China
| | - Jibin Zhang
- Department of Cardiology & National Clinical Research Center for Geriatric Diseases2nd Medical CenterChinese PLA General HospitalBeijingChina
| | - Yanhua Li
- Department of Cardiology & National Clinical Research Center for Geriatric Diseases2nd Medical CenterChinese PLA General HospitalBeijingChina
| | - Yabin Wang
- Department of Cardiology & National Clinical Research Center for Geriatric Diseases2nd Medical CenterChinese PLA General HospitalBeijingChina
- Department of Cardiology1st Medical CenterChinese PLA General HospitalBeijingChina
| | - Feng Cao
- Department of Cardiology & National Clinical Research Center for Geriatric Diseases2nd Medical CenterChinese PLA General HospitalBeijingChina
- Department of Cardiology1st Medical CenterChinese PLA General HospitalBeijingChina
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50
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Ou M, Zhao H, Ji G, Zhao X, Zhang Q. Long noncoding RNA MALAT1 contributes to pregnancy-induced hypertension development by enhancing oxidative stress and inflammation through the regulation of the miR-150-5p/ET-1 axis. FASEB J 2020; 34:6070-6085. [PMID: 32246794 DOI: 10.1096/fj.201902280r] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 01/06/2020] [Accepted: 02/02/2020] [Indexed: 12/21/2022]
Abstract
Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) has been identified previously in the pathogenesis of hypertension and some gestational diseases. However, the biological functions of MALAT1 in pregnancy-induced hypertension (PIH) are still poorly understood. Herein, we aim to explore the functional relevance of MALAT1 in PIH and to explain the potential underlying mechanisms. We found that the levels of ET-1 and MALAT1 were upregulated and that of miR-150-5p were downregulated in the serum of pregnant women with PIH and the aortic endothelial cells (ECs) of reduced uterine perfusion pressure (RUPP)-induced rat models. In aortic ECs, MALAT1 could competitively bind to miR-150-5p to upregulate the expression of ET-1. The MALAT1/miR-150-5p/ET-1 axis regulated the expression of endothelin B receptor (ETBR) in aortic ECs leading to oxidative stress imbalance and increased the release of proinflammatory cytokines (IL-18 and IL-1β), which concurrently activated the NF-κB pathway to regulate the ETBR expression and to stimulate smooth muscle cell (SMC) contraction. Furthermore, silencing MALAT1 could alleviate the hypertensive symptoms of RUPP-induced rat models. Taken conjointly, the upregulation of MALAT1 can reduce the expression of ET-1 by competitively binding to miR-150-5p, which enhances the expression of ETBR via the activation of the NF-κB pathway in SMCs, thus exacerbating the hypertensive symptoms in the RUPP-induced rat models.
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Affiliation(s)
- Minghui Ou
- Department of Vascular Surgery, Qingdao Municipal Hospital, Qingdao, P.R. China
| | - Huidong Zhao
- Department of Obstetrics, Qingdao Municipal Hospital, Qingdao, P.R. China
| | - Guoxin Ji
- Department of Obstetrics, Qingdao Municipal Hospital, Qingdao, P.R. China
| | - Xin Zhao
- Department of Obstetrics, Qingdao Municipal Hospital, Qingdao, P.R. China
| | - Qian Zhang
- Department of Obstetrics, Qingdao Municipal Hospital, Qingdao, P.R. China
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