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Gao L, Wang H, Fang F, Liu J, Zhao C, Niu J, Wang Z, Zhong Y, Wang X. The roles of orphan nuclear receptor 4 group A1 and A2 in fibrosis. Int Immunopharmacol 2024; 139:112705. [PMID: 39029235 DOI: 10.1016/j.intimp.2024.112705] [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: 05/16/2024] [Revised: 07/11/2024] [Accepted: 07/14/2024] [Indexed: 07/21/2024]
Abstract
Fibrosis is not a disease but rather an outcome of the pathological tissue repair response. Many myofibroblasts are activated which lead to the excessive accumulation of extracellular matrix components such as collagen and fibronectin with fibrosis. A variety of organs, including kidney, liver, lung, heart and skin, can undergo fibrosis under the stimulation of exogenous or endogenous pathogenic factors. The orphan nuclear receptor 4 group A1 (NR4A1) and nuclear receptor 4 group A2(NR4A2)are belong to the nuclear receptor subfamily and inhibit the occurrence and development of fibrosis. NR4A1 is an inhibitory factor of TGF-β signaling transduction. Overexpression of NR4A1 in fibroblasts can reduce TGF-β induced collagen deposition and fibrosis related gene expression. Here, we summarize the current research progress on the NR4A1/2 and fibrosis, providing reference for the treatment of fibrosis.
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Affiliation(s)
- Lanjun Gao
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Hongshuang Wang
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Fang Fang
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Jiazhi Liu
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Chenchen Zhao
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Jieqi Niu
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Zheng Wang
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns Research, Shijiazhuang 050091, China; Institute of Integrative Medicine, College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Yan Zhong
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns Research, Shijiazhuang 050091, China; Institute of Integrative Medicine, College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang 050200, China.
| | - Xiangting Wang
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns Research, Shijiazhuang 050091, China.
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Michaud ME, Mota L, Bakhtiari M, Thomas BE, Tomeo J, Pilcher W, Contreras M, Ferran C, Bhasin SS, Pradhan-Nabzdyk L, LoGerfo FW, Liang P, Bhasin MK. Early Injury Landscape in Vein Harvest by Single-Cell and Spatial Transcriptomics. Circ Res 2024; 135:110-134. [PMID: 38808504 PMCID: PMC11189745 DOI: 10.1161/circresaha.123.323939] [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: 11/02/2023] [Revised: 05/03/2024] [Accepted: 05/09/2024] [Indexed: 05/30/2024]
Abstract
BACKGROUND Vein graft failure following cardiovascular bypass surgery results in significant patient morbidity and cost to the healthcare system. Vein graft injury can occur during autogenous vein harvest and preparation, as well as after implantation into the arterial system, leading to the development of intimal hyperplasia, vein graft stenosis, and, ultimately, bypass graft failure. Although previous studies have identified maladaptive pathways that occur shortly after implantation, the specific signaling pathways that occur during vein graft preparation are not well defined and may result in a cumulative impact on vein graft failure. We, therefore, aimed to elucidate the response of the vein conduit wall during harvest and following implantation, probing the key maladaptive pathways driving graft failure with the overarching goal of identifying therapeutic targets for biologic intervention to minimize these natural responses to surgical vein graft injury. METHODS Employing a novel approach to investigating vascular pathologies, we harnessed both single-nuclei RNA-sequencing and spatial transcriptomics analyses to profile the genomic effects of vein grafts after harvest and distension, then compared these findings to vein grafts obtained 24 hours after carotid-carotid vein bypass implantation in a canine model (n=4). RESULTS Spatial transcriptomic analysis of canine cephalic vein after initial conduit harvest and distention revealed significant enrichment of pathways (P<0.05) involved in the activation of endothelial cells (ECs), fibroblasts, and vascular smooth muscle cells, namely pathways responsible for cellular proliferation and migration and platelet activation across the intimal and medial layers, cytokine signaling within the adventitial layer, and ECM (extracellular matrix) remodeling throughout the vein wall. Subsequent single-nuclei RNA-sequencing analysis supported these findings and further unveiled distinct EC and fibroblast subpopulations with significant upregulation (P<0.05) of markers related to endothelial injury response and cellular activation of ECs, fibroblasts, and vascular smooth muscle cells. Similarly, in vein grafts obtained 24 hours after arterial bypass, there was an increase in myeloid cell, protomyofibroblast, injury response EC, and mesenchymal-transitioning EC subpopulations with a concomitant decrease in homeostatic ECs and fibroblasts. Among these markers were genes previously implicated in vein graft injury, including VCAN, FBN1, and VEGFC, in addition to novel genes of interest, such as GLIS3 and EPHA3. These genes were further noted to be driving the expression of genes implicated in vascular remodeling and graft failure, such as IL-6, TGFBR1, SMAD4, and ADAMTS9. By integrating the spatial transcriptomics and single-nuclei RNA-sequencing data sets, we highlighted the spatial architecture of the vein graft following distension, wherein activated and mesenchymal-transitioning ECs, myeloid cells, and fibroblasts were notably enriched in the intima and media of distended veins. Finally, intercellular communication network analysis unveiled the critical roles of activated ECs, mesenchymal-transitioning ECs, protomyofibroblasts, and vascular smooth muscle cells in upregulating signaling pathways associated with cellular proliferation (MDK [midkine], PDGF [platelet-derived growth factor], VEGF [vascular endothelial growth factor]), transdifferentiation (Notch), migration (ephrin, semaphorin), ECM remodeling (collagen, laminin, fibronectin), and inflammation (thrombospondin), following distension. CONCLUSIONS Vein conduit harvest and distension elicit a prompt genomic response facilitated by distinct cellular subpopulations heterogeneously distributed throughout the vein wall. This response was found to be further exacerbated following vein graft implantation, resulting in a cascade of maladaptive gene regulatory networks. Together, these results suggest that distension initiates the upregulation of pathological pathways that may ultimately contribute to bypass graft failure and presents potential early targets warranting investigation for targeted therapies. This work highlights the first applications of single-nuclei and spatial transcriptomic analyses to investigate venous pathologies, underscoring the utility of these methodologies and providing a foundation for future investigations.
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Affiliation(s)
- Marina E. Michaud
- Department of Pediatrics, Emory School of Medicine, Atlanta, GA (M.E.M., M.B., B.E.T., S.S.B., M.K.B.)
| | - Lucas Mota
- Department of Surgery, Division of Vascular and Endovascular Surgery, Beth Israel Deaconess Medical Center (L.M., J.T., M.C., C.F., L.P.-N., F.W.L., P.L.), Harvard Medical School, Boston, MA
| | - Mojtaba Bakhtiari
- Department of Pediatrics, Emory School of Medicine, Atlanta, GA (M.E.M., M.B., B.E.T., S.S.B., M.K.B.)
| | - Beena E. Thomas
- Department of Pediatrics, Emory School of Medicine, Atlanta, GA (M.E.M., M.B., B.E.T., S.S.B., M.K.B.)
| | - John Tomeo
- Department of Surgery, Division of Vascular and Endovascular Surgery, Beth Israel Deaconess Medical Center (L.M., J.T., M.C., C.F., L.P.-N., F.W.L., P.L.), Harvard Medical School, Boston, MA
| | - William Pilcher
- Department of Biomedical Engineering, Emory University, Atlanta, GA (W.P., M.K.B.)
| | - Mauricio Contreras
- Department of Surgery, Division of Vascular and Endovascular Surgery, Beth Israel Deaconess Medical Center (L.M., J.T., M.C., C.F., L.P.-N., F.W.L., P.L.), Harvard Medical School, Boston, MA
| | - Christiane Ferran
- Department of Surgery, Division of Vascular and Endovascular Surgery, Beth Israel Deaconess Medical Center (L.M., J.T., M.C., C.F., L.P.-N., F.W.L., P.L.), Harvard Medical School, Boston, MA
- Department of Medicine, Beth Israel Deaconess Medical Center, Center for Vascular Biology Research and the Division of Nephrology (C.F.), Harvard Medical School, Boston, MA
| | - Swati S. Bhasin
- Department of Pediatrics, Emory School of Medicine, Atlanta, GA (M.E.M., M.B., B.E.T., S.S.B., M.K.B.)
- Aflac Cancer and Blood Disorders Center, Children Healthcare of Atlanta, GA (S.S.B., M.K.B.)
| | - Leena Pradhan-Nabzdyk
- Department of Surgery, Division of Vascular and Endovascular Surgery, Beth Israel Deaconess Medical Center (L.M., J.T., M.C., C.F., L.P.-N., F.W.L., P.L.), Harvard Medical School, Boston, MA
| | - Frank W. LoGerfo
- Department of Surgery, Division of Vascular and Endovascular Surgery, Beth Israel Deaconess Medical Center (L.M., J.T., M.C., C.F., L.P.-N., F.W.L., P.L.), Harvard Medical School, Boston, MA
| | - Patric Liang
- Department of Surgery, Division of Vascular and Endovascular Surgery, Beth Israel Deaconess Medical Center (L.M., J.T., M.C., C.F., L.P.-N., F.W.L., P.L.), Harvard Medical School, Boston, MA
| | - Manoj K. Bhasin
- Department of Pediatrics, Emory School of Medicine, Atlanta, GA (M.E.M., M.B., B.E.T., S.S.B., M.K.B.)
- Aflac Cancer and Blood Disorders Center, Children Healthcare of Atlanta, GA (S.S.B., M.K.B.)
- Department of Biomedical Engineering, Emory University, Atlanta, GA (W.P., M.K.B.)
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Wang Y, Li F, Mao L, Liu Y, Chen S, Liu J, Huang K, Chen Q, Wu J, Lu L, Zheng Y, Shen W, Ying T, Dai Y, Shen Y. Promoting collateral formation in type 2 diabetes mellitus using ultra-small nanodots with autophagy activation and ROS scavenging. J Nanobiotechnology 2024; 22:85. [PMID: 38429826 PMCID: PMC10908163 DOI: 10.1186/s12951-024-02357-z] [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: 01/03/2024] [Accepted: 02/20/2024] [Indexed: 03/03/2024] Open
Abstract
BACKGROUND Impaired collateral formation is a major factor contributing to poor prognosis in type 2 diabetes mellitus (T2DM) patients with atherosclerotic cardiovascular disease. However, the current pharmacological treatments for improving collateral formation remain unsatisfactory. The induction of endothelial autophagy and the elimination of reactive oxygen species (ROS) represent potential therapeutic targets for enhancing endothelial angiogenesis and facilitating collateral formation. This study investigates the potential of molybdenum disulfide nanodots (MoS2 NDs) for enhancing collateral formation and improving prognosis. RESULTS Our study shows that MoS2 NDs significantly enhance collateral formation in ischemic tissues of diabetic mice, improving effective blood resupply. Additionally, MoS2 NDs boost the proliferation, migration, and tube formation of endothelial cells under high glucose/hypoxia conditions in vitro. Mechanistically, the beneficial effects of MoS2 NDs on collateral formation not only depend on their known scavenging properties of ROS (H2O2, •O2-, and •OH) but also primarily involve a molecular pathway, cAMP/PKA-NR4A2, which promotes autophagy and contributes to mitigating damage in diabetic endothelial cells. CONCLUSIONS Overall, this study investigated the specific mechanism by which MoS2 NDs mediated autophagy activation and highlighted the synergy between autophagy activation and antioxidation, thus suggesting that an economic and biocompatible nano-agent with dual therapeutic functions is highly preferable for promoting collateral formation in a diabetic context, thus, highlighting their therapeutic potential.
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Affiliation(s)
- Yixuan Wang
- Department of Cardiovascular Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
- Shanghai Clinical Research Center for Interventional Medicine, Shanghai, 200025, China
| | - Feifei Li
- Department of Cardiovascular Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
- Shanghai Clinical Research Center for Interventional Medicine, Shanghai, 200025, China
| | - Linshuang Mao
- Department of Cardiovascular Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
- Shanghai Clinical Research Center for Interventional Medicine, Shanghai, 200025, China
| | - Yu Liu
- Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, School of Medicine and Engineering, Beihang University, Beijing, 100191, China
| | - Shuai Chen
- Department of Cardiovascular Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
- Shanghai Clinical Research Center for Interventional Medicine, Shanghai, 200025, China
| | - Jingmeng Liu
- Department of Cardiovascular Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
- Shanghai Clinical Research Center for Interventional Medicine, Shanghai, 200025, China
| | - Ke Huang
- Department of Cardiovascular Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
- Shanghai Clinical Research Center for Interventional Medicine, Shanghai, 200025, China
| | - Qiujing Chen
- Department of Cardiovascular Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
- Shanghai Clinical Research Center for Interventional Medicine, Shanghai, 200025, China
| | - Jianrong Wu
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Lin Lu
- Department of Cardiovascular Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
- Shanghai Clinical Research Center for Interventional Medicine, Shanghai, 200025, China
| | - Yuanyi Zheng
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Weifeng Shen
- Department of Cardiovascular Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
- Shanghai Clinical Research Center for Interventional Medicine, Shanghai, 200025, China
| | - Tao Ying
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China.
| | - Yang Dai
- Department of Cardiovascular Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
- Shanghai Clinical Research Center for Interventional Medicine, Shanghai, 200025, China.
| | - Ying Shen
- Department of Cardiovascular Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
- Shanghai Clinical Research Center for Interventional Medicine, Shanghai, 200025, China.
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Zhao S, Wang X, Huang F, Zhou Y, Meng D, Zhao D, Wang J, Zhang H, Wu L, Zhang Y, Zhao L, Zhang L, Song Y, Wang Q. A role of NR4A2 in Graves' disease: regulation of Th17/Treg. Endocrine 2024; 83:432-441. [PMID: 37651006 DOI: 10.1007/s12020-023-03490-9] [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: 05/07/2023] [Accepted: 08/10/2023] [Indexed: 09/01/2023]
Abstract
PURPOSE This study aimed to explore the molecular pathogenesis of Graves' disease (GD). METHODS The gene expression profile in CD4+ T cells from GD patients and healthy controls were analyzed through mRNA-sequencing. The expression of NR4A2 was determined by quantitative real-time PCR and western blot. The levels of Th17 and Treg were determined by flow cytometry. ELISA was employed to detect the levels of IL-10, IL-17A, IL-17F and IL-22. RESULTS In the CD4+ T cells from GD patients, there were 128 up-regulated and 510 down-regulated genes. Subsequently, we focused on the role of nuclear receptor 4 group A member 2 (NR4A2) in GD. NR4A2 was lowly expressed in the CD4+ T cells from GD patients. Its expression was negatively correlated with free triiodothyronine and tetraiodothyronine, but positively correlated with thyroid stimulating hormone. NR4A2 knockdown decreased the percentage of Treg cells, with a decreased IL-10 level. While its over-expression augmented the Treg differentiation, with an elevated IL-10 level. In addition, knockdown or over-expression of NR4A2 showed no significant influence on Th17 differentiation. CONCLUSION These results indicate that the low level of NR4A2 in GD patients may suppress Treg differentiation, but have no influence on Th17 differentiation, leading to the imbalance of Th17/Treg and contributing to the development of GD. Revealing the role of NR4A2 in GD provides a novel insight for the treatment of GD.
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Affiliation(s)
- Shuiying Zhao
- Department of Endocrinology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Xinyu Wang
- Department of Nuclear Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Fengjiao Huang
- Department of Endocrinology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Yingying Zhou
- Department of Endocrinology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Dongdong Meng
- Department of Endocrinology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Di Zhao
- Department of Endocrinology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Jiao Wang
- Department of Endocrinology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Haohao Zhang
- Department of Endocrinology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Lina Wu
- Department of Endocrinology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Ying Zhang
- Department of Endocrinology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Lin Zhao
- Department of Endocrinology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Lixia Zhang
- Department of Endocrinology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Yi Song
- Department of Endocrinology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Qingzhu Wang
- Department of Nuclear Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PR China.
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Zhou J, Liu H, Zhang T, Wang Z, Zhang J, Lu Y, Li Z, Kong W, Zhao J. MORN4 protects cardiomyocytes against ischemic injury via MFN2-mediated mitochondrial dynamics and mitophagy. Free Radic Biol Med 2023; 196:156-170. [PMID: 36682578 DOI: 10.1016/j.freeradbiomed.2023.01.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/10/2023] [Accepted: 01/12/2023] [Indexed: 01/21/2023]
Abstract
The imbalance of mitochondrial fission and fusion dynamics causes ischemic cardiomyocyte apoptosis and heart injury by affecting mitophagy. Regulation of mitochondrial dynamics is an important therapeutic strategy for ischemic heart diseases. Considering the important roles of MORN motifs in heart diseases and chloroplast fission, we aimed to investigate the possible role of MORN repeat-containing protein 4 (MORN4) in the progression of myocardial infarction (MI), ischemic cardiomyocyte apoptosis, mitochondrial dynamics, and mitophagy. We found that in the MI mouse, MORN4 knockdown remarkably accelerated cardiac injury and fibrosis with deteriorating cardiac dysfunction. Sphingosylphosphorylcholine (SPC) alleviated ischemic cardiomyocyte apoptosis and heart injury through increased level of MORN4, indicating a vital function of MORN4 in heart with SPC used to clarify the molecular mechanisms underlying the functions of MORN4. Mechanistically, we found that MORN4 directly binds to MFN2 and promotes the phosphorylation of MFN2 S442 through Rho-associated protein kinase 2 (ROCK2), which mediates beneficial mitophagy induced by mitochondrial dynamics, while SPC promoted the binding of MORN4 and MFN2 and the process. Taken together, our data reveal a new perspective role of MORN4 in ischemic heart injury, and report that SPC could regulate myocardial mitochondrial homeostasis by activating the MORN4-MFN2 axis during the ischemic situation, this finding provides novel targets for improving myocardial ischemia tolerance and rescue of acute myocardial infarction.
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Affiliation(s)
- Jinrun Zhou
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, 266237, PR China
| | - Honghong Liu
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, 266237, PR China
| | - Tianliang Zhang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, 266237, PR China; Experimental Center for Medical Research, Weifang Medical University, Weifang, 261000, PR China
| | - Zhaohui Wang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, 266237, PR China
| | - Jiaojiao Zhang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, 266237, PR China
| | - Yao Lu
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, 266237, PR China
| | - Zhiliang Li
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, 266237, PR China
| | - Weihua Kong
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, 266237, PR China
| | - Jing Zhao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, 266237, PR China.
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Liao H, Wang Z, Zhang X, Li X, Chen X. Intermedin induces autophagy and attenuates hypoxia-induced injury in cardiomyocytes by regulation of MALAT1/ULK1. Peptides 2023; 160:170917. [PMID: 36442698 DOI: 10.1016/j.peptides.2022.170917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 10/26/2022] [Accepted: 11/20/2022] [Indexed: 11/27/2022]
Abstract
Myocardial infarction is a predominant cause of cardiovascular diseases with high incidence and death rate worldwide. Although growing evidence has suggested that IMD has significant protective influences on the cardiovascular system, the molecular regulatory mechanism of IMD in hypoxia-induced injury caused by myocardial infarction is urgent to be elucidated. In the present study, we found hypoxia led to a noteworthy enhancement in IMD expression and IMD alleviated hypoxia-induced myocardial injury of NRCMs. Furthermore, IMD was proved to inhibit hypoxia-induced injury by regulating MALAT1. Our findings suggested MALAT1 positively regulated the mRNA and protein expression level of ULK1 and hypoxia induced autophagy of NRCMs. MALAT1 stimulated autophagy to block hypoxia-induced cell injury in NRCMs via upregulation of ULK1 expression. Autophagy suppression abolished the protective capability of IMD overexpression against hypoxia-induced myocardial injury in NRCMs. In a word, our study shed light on the central mechanism of IMD in preventing hypoxia-induced injury caused by myocardial infarction. We confirmed IMD induced autophagy and attenuated hypoxia-induced injury in cardiomyocytes via MALAT1/ULK1, which may contribute to designing effective therapeutic approaches of myocardial infarction.
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Affiliation(s)
- Hang Liao
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan 610015, China
| | - Ziqiong Wang
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan 610015, China
| | - Xin Zhang
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan 610015, China
| | - Xinran Li
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan 610015, China
| | - Xiaoping Chen
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan 610015, China.
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Wei D, Qi J, Wang Y, Li L, Yang G, He X, Zhang Z. NR4A2 may be a potential diagnostic biomarker for myocardial infarction: A comprehensive bioinformatics analysis and experimental validation. Front Immunol 2022; 13:1061800. [PMID: 36618351 PMCID: PMC9815548 DOI: 10.3389/fimmu.2022.1061800] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 12/02/2022] [Indexed: 12/24/2022] Open
Abstract
Background Myocardial infarction is a well-established severe consequence of coronary artery disease. However, the lack of effective early biomarkers accounts for the lag time before clinical diagnosis of myocardial infarction. The present study aimed to predict critical genes for the diagnosis of MI by immune infiltration analysis and establish a nomogram. Methods Gene microarray data were downloaded from Gene Expression Omnibus (GEO). Differential expression analysis, single-cell sequencing, and disease ontology (DO) enrichment analysis were performed to determine the distribution of Differentially Expressed Genes (DEGs) in cell subpopulations and their correlation with MI. Next, the level of infiltration of 16 immune cells and immune functions and their hub genes were analyzed using a Single-sample Gene Set Enrichment Analysis (ssGSEA). In addition, the accuracy of critical markers for the diagnosis of MI was subsequently assessed using receiver operating characteristic curves (ROC). One datasets were used to test the accuracy of the model. Finally, the genes with the most diagnostic value for MI were screened and experimentally validated. Results 335 DEGs were identified in GSE66360, including 280 upregulated and 55 downregulated genes. Single-cell sequencing results demonstrated that DEGs were mainly distributed in endothelial cells. DO enrichment analysis suggested that DEGs were highly correlated with MI. In the MI population, macrophages, neutrophils, CCR, and Parainflammation were significantly upregulated compared to the average population. NR4A2 was identified as the gene with the most significant diagnostic value in the immune scoring and diagnostic model. 191 possible drugs for the treatment of myocardial infarction were identified by drug prediction analysis. Finally, our results were validated by Real-time Quantitativepolymerase chain reaction and Western Blot of animal samples. Conclusion Our comprehensive in silico analysis revealed that NR4A2 has huge prospects for application in diagnosing patients with MI.
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Affiliation(s)
- Dongsheng Wei
- Graduate Academy, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning, China
| | - Jiajie Qi
- Graduate Academy, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning, China
| | - Yuxuan Wang
- Graduate Academy, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning, China
| | - Luzhen Li
- Graduate Academy, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning, China
| | - Guanlin Yang
- Key Laboratory of Ministry of Education for Traditional Chinese Medicine Viscera-State Theory and Applications, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning, China
| | - Xinyong He
- College of Medical Laboratory, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning, China
| | - Zhe Zhang
- Key Laboratory of Ministry of Education for Traditional Chinese Medicine Viscera-State Theory and Applications, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning, China,*Correspondence: Zhe Zhang,
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Yao M, Wang J, Zhang J, Guo Y, Ni Z, Jia X, Feng H. Asiaticoside attenuates oxygen-glucose deprivation/reoxygenation-caused injury of cardiomyocytes by inhibiting autophagy. J Appl Toxicol 2022; 43:789-798. [PMID: 36523111 DOI: 10.1002/jat.4424] [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: 09/24/2022] [Revised: 12/06/2022] [Accepted: 12/11/2022] [Indexed: 12/23/2022]
Abstract
Asiaticoside is a natural triterpene compound derived from Centella asiatica, possessing confirmed cardioprotective property. However, the roles of asiaticoside in regulating oxygen-glucose deprivation/reoxygenation (OGD/R)-caused cardiomyocyte dysfunction remain largely obscure. Human cardiomyocyte AC16 cells were stimulated with OGD/R to mimic myocardial ischemia/reperfusion injury and treated with asiaticoside. Cytotoxicity was investigated by CCK-8 assay and lactate dehydrogenase (LDH) release analysis. Autophagy- and Wnt/β-catenin signaling-related protein levels were measured via western blotting. Asiaticoside (0-20 μM) did not induce cardiomyocyte cytotoxicity. Asiaticoside (20 μM) mitigated OGD/R-induced autophagy, cytotoxicity, oxidative stress, and myocardial injury. Rapamycin, an autophagy inductor, reversed the influences of asiaticoside on autophagy, cytotoxicity, oxidative stress, and myocardial injury, whereas 3-methyadanine, an autophagy inhibitor, played an opposite effect. Asiaticoside (20 μM) attenuated OGD/R-induced Wnt/β-catenin signaling inactivation, which was reversed after transfection with si-β-catenin. Transfection with si-β-catenin attenuated the influences of asiaticoside on autophagy, cytotoxicity, oxidative stress, and myocardial injury. In conclusion, asiaticoside protected against OGD/R-induced cardiomyocyte cytotoxicity, oxidative stress, and myocardial injury via blunting autophagy through activating the Wnt/β-catenin signaling, indicating the therapeutic potential of asiaticoside in myocardial ischemia/reperfusion injury.
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Affiliation(s)
- Mingyan Yao
- Department of Cardiology, Affiliated Hospital of Hebei University, Baoding, China.,Department of Endocrinology, Baoding No.1 Central Hospital, Baoding, China
| | - Jie Wang
- Department of Endocrinology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Jing Zhang
- Department of Cardiology, Affiliated Hospital of Hebei University, Baoding, China
| | - Yifang Guo
- Cardiology Division in Geriatric Institute, Hebei Provincial People's Hospital, Shijiazhuang, China
| | - Zhiyu Ni
- Department of Cardiology, Affiliated Hospital of Hebei University, Baoding, China
| | - Xinwei Jia
- Department of Cardiology, Affiliated Hospital of Hebei University, Baoding, China
| | - Huiping Feng
- Department of Cardiology, Affiliated Hospital of Hebei University, Baoding, China
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9
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Moxonidine ameliorates cardiac injury in rats with metabolic syndrome by regulating autophagy. Life Sci 2022; 312:121210. [PMID: 36410408 DOI: 10.1016/j.lfs.2022.121210] [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: 10/14/2022] [Revised: 11/12/2022] [Accepted: 11/16/2022] [Indexed: 11/19/2022]
Abstract
AIMS Reduced cardiac autophagy, ischemic injury, sympathetic overactivity, and apoptosis all contribute to metabolic syndrome (MetS)-associated cardiovascular risks. NR4A2, an orphan nuclear receptor NR4A family member, induces autophagy while suppressing apoptosis in myocardial infarction. Moxonidine, a sympathoinhibitor imidazoline1 receptor (I1R) agonist, has beneficial metabolic and hemodynamic effects; however, whether autophagy and/or NR4A2 signaling are involved in moxonidine's cardiovascular effects via I1R activation, is unknown, and is the aim of this study. MATERIALS AND METHODS To induce MetS, rats were fed 3 % salt in their diet and 10 % fructose in their drinking water for 12 weeks. MetS-rats were given either moxonidine (6 mg/kg/day, gavage), efaroxan (I1R antagonist, 0.6 mg/kg/day, i.p), both treatments, or vehicles for the last two weeks. Blood pressure, lipid profile, and glycemic control were evaluated. Histopathological examination, circulating cardiac troponin I (c-TnI), proinflammatory interleukin-6 (IL-6), apoptosis (active caspase-3 and Fas-immunostaining), interstitial fibrosis [transforming growth factor-β1 (TGF-β1), Mallory's trichrome staining], and extracellular matrix remodeling [matrix metalloproteinase-9 (MMP-9)], were used to assess cardiac pathology. Cardiac NR4A2 and its downstream factor, p53, as well as autophagic flux markers, SQSTM1/p62, LC3, and Beclin-1 were also determined. KEY FINDINGS Moxonidine significantly ameliorated MetS-induced metabolic and hemodynamic derangements and the associated cardiac pathology. Moxonidine restored NR4A2 and p53 myocardial levels and enhanced autophagic flux via modulating SQSTM1/p62, LC3, and Beclin-1. Efaroxan reversed the majority of the moxonidine-induced improvements. SIGNIFICANCE The current study suggests that autophagy modulation via I1R activation is involved in moxonidine-mediated cardiac beneficial effects in MetS.
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10
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Zhai X, Liu R, Li J, Wang F, Liu L, Wei S, Bian Y, Pang J, Xue M, Qin D, Wang S, Xu T, Xu F, Cao S, Yuan Q, Chen Y. LincRNA-p21 Upregulates Nuclear Orphan Receptor Nr4a2 and Aggravates Myocardial Ischemia/Reperfusion Injury via Targeting MiR-466i-5p. Int Heart J 2022; 63:1004-1014. [DOI: 10.1536/ihj.21-856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Xiaoxuan Zhai
- Department of Emergency Medicine, Qilu Hospital of Shandong University
| | - Rugang Liu
- Department of Emergency Medicine, Qilu Hospital of Shandong University
| | - Jiaxin Li
- Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Qilu Hospital of Shandong University
| | - Fulin Wang
- Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Qilu Hospital of Shandong University
| | - Lulu Liu
- Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Qilu Hospital of Shandong University
| | - Shujian Wei
- Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Qilu Hospital of Shandong University
| | - Yuan Bian
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese Ministry of Health and Chinese Academy of Medical Sciences; The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University
| | - Jiaojiao Pang
- Department of Emergency Medicine, Qilu Hospital of Shandong University
| | - Mengyang Xue
- Department of Emergency Medicine, Qilu Hospital of Shandong University
| | - Dandan Qin
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Chest Pain Center, Qilu Hospital of Shandong University
| | - Shuo Wang
- Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Qilu Hospital of Shandong University
| | - Tonghui Xu
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Chest Pain Center, Qilu Hospital of Shandong University
| | - Feng Xu
- Department of Emergency Medicine, Qilu Hospital of Shandong University
| | - Shengchuan Cao
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Chest Pain Center, Qilu Hospital of Shandong University
| | - Qiuhuan Yuan
- Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Qilu Hospital of Shandong University
| | - Yuguo Chen
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Chest Pain Center, Qilu Hospital of Shandong University
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11
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Wang H, Shao J, Lu X, Jiang M, Li X, Liu Z, Zhao Y, Zhou J, Lin L, Wang L, Xu Q, Chen Y, Zhang R. Potential of immune-related genes as promising biomarkers for premature coronary heart disease through high throughput sequencing and integrated bioinformatics analysis. Front Cardiovasc Med 2022; 9:893502. [PMID: 36093144 PMCID: PMC9458892 DOI: 10.3389/fcvm.2022.893502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 07/06/2022] [Indexed: 11/13/2022] Open
Abstract
Background Coronary heart disease (CHD) is the most common progressive disease that is difficult to diagnose and predict in the young asymptomatic period. Our study explored a mechanistic understanding of the genetic effects of premature CHD (PCHD) and provided potential biomarkers and treatment targets for further research through high throughput sequencing and integrated bioinformatics analysis. Methods High throughput sequencing was performed among recruited patients with PCHD and young healthy individuals, and CHD-related microarray datasets were obtained from the Gene Expression Omnibus (GEO) database. Differentially expressed genes (DEGs) were identified by using R software. Enrichment analysis and CIBERSORT were performed to explore the enriched pathways of DEGs and the characteristics of infiltrating immune cells. Hub genes identified by protein–protein interaction (PPI) networks were used to construct the competitive endogenous RNA (ceRNA) networks. Potential drugs were predicted by using the Drug Gene Interaction Database (DGIdb). Results A total of 35 DEGs were identified from the sequencing dataset and GEO database by the Venn Diagram. Enrichment analysis indicated that DEGs are mostly enriched in excessive immune activation pathways and signal transduction. CIBERSORT exhibited that resting memory CD4 T cells and neutrophils were more abundant, and M2 macrophages, CD8 T cells, and naïve CD4 T cells were relatively scarce in patients with PCHD. After the identification of 10 hub gens, three ceRNA networks of CD83, CXCL8, and NR4A2 were constructed by data retrieval and validation. In addition, CXCL8 might interact most with multiple chemical compounds mainly consisting of anti-inflammatory drugs. Conclusions The immune dysfunction mainly contributes to the pathogenesis of PCHD, and three ceRNA networks of CD83, CXCL8, and NR4A2 may be potential candidate biomarkers for early diagnosis and treatment targets of PCHD.
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Affiliation(s)
- Haiming Wang
- Department of Cardiovascular Medicine, Chinese PLA General Hospital and Chinese People's Liberation Army (PLA) Medical School, Beijing, China
| | - Junjie Shao
- Department of Cardiovascular Medicine, Chinese PLA General Hospital and Chinese People's Liberation Army (PLA) Medical School, Beijing, China
| | - Xuechun Lu
- Department of Hematology, The Second Medical Center of Chinese PLA General Hospital and Chinese People's Liberation Army (PLA) Medical School, Beijing, China
| | - Min Jiang
- Department of Respiratory and Critical Care, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Xin Li
- Department of Health Services, The First Medical Center of Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Zifan Liu
- Department of Cardiovascular Medicine, Chinese PLA General Hospital and Chinese People's Liberation Army (PLA) Medical School, Beijing, China
| | - Yunzhang Zhao
- Department of Cardiovascular Medicine, Chinese PLA General Hospital and Chinese People's Liberation Army (PLA) Medical School, Beijing, China
| | - Jingjing Zhou
- Department of Cardiovascular Medicine, Chinese PLA General Hospital and Chinese People's Liberation Army (PLA) Medical School, Beijing, China
| | - Lejian Lin
- Department of Cardiovascular Medicine, Chinese PLA General Hospital and Chinese People's Liberation Army (PLA) Medical School, Beijing, China
| | - Lin Wang
- Department of Cardiovascular Medicine, Chinese PLA General Hospital and Chinese People's Liberation Army (PLA) Medical School, Beijing, China
| | - Qiang Xu
- Department of Cardiovascular Medicine, Chinese PLA General Hospital and Chinese People's Liberation Army (PLA) Medical School, Beijing, China
| | - Yundai Chen
- Department of Cardiovascular Medicine, Chinese PLA General Hospital and Chinese People's Liberation Army (PLA) Medical School, Beijing, China
- Yundai Chen
| | - Ran Zhang
- Department of Cardiovascular Medicine, Chinese PLA General Hospital and Chinese People's Liberation Army (PLA) Medical School, Beijing, China
- *Correspondence: Ran Zhang
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12
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JNK-dependent phosphorylation and nuclear translocation of EGR-1 promotes cardiomyocyte apoptosis. Apoptosis 2022; 27:246-260. [PMID: 35103892 DOI: 10.1007/s10495-022-01714-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/18/2022] [Indexed: 01/27/2023]
Abstract
Myocardial apoptosis induced by myocardial ischemia and hyperlipemia are the main causes of high mortality of cardiovascular diseases. It is not clear whether there is a common mechanism responsible for these two kinds of cardiomyocyte apoptosis. Previous studies demonstrated that early growth response protein 1 (EGR-1) has a pro-apoptotic effect on cardiomyocytes under various stress conditions. Here, we found that EGR-1 is also involved in cardiomyocyte apoptosis induced by both ischemia and high-fat, but how EGR-1 enters the nucleus and whether nuclear EGR-1 (nEGR-1) has a universal effect on cardiomyocyte apoptosis are still unknown. By analyzing the phosphorylation sites and nucleation information of EGR-1, we constructed different mutant plasmids to confirm that the nucleus location of EGR-1 requires Ser501 phosphorylation and regulated by JNK. Furthermore, the pro-apoptotic effect of nEGR-1 was further explored through genetic methods. The results showed that EGR-1 positively regulates the mRNA levels of apoptosis-related proteins (ATF2, CTCF, HAND2, ELK1), which may be the downstream targets of EGR-1 to promote the cardiomyocyte apoptosis. Our research announced the universal pro-apoptotic function of nEGR-1 and explored the mechanism of its nucleus location in cardiomyocytes, providing a new target for the "homotherapy for heteropathy" to cardiovascular diseases.
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13
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Xu S, Xia X, Liu Y, Chen F, Gu R, Bian X, Xu X, Jia C, Lu S, Gu Y, Bai H, Zhang H. Remote cyclic compression ameliorates myocardial infarction injury in rats via AMPK-dependent pathway. Microvasc Res 2022; 141:104313. [PMID: 35041850 DOI: 10.1016/j.mvr.2022.104313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 11/10/2021] [Accepted: 01/03/2022] [Indexed: 12/25/2022]
Abstract
BACKGROUND Remote ischemic conditioning (RIC) displays a cardioprotective role in acute myocardial infarction (AMI). Since interruption of blood vessel is not an essential trigger of remote cardioprotection, tissue compression may play a prominent part in the effect. The purpose of this study was to confirm the protective effect of tissue compression on AMI and the underlying mechanisms. METHODS AND RESULTS Rat model of AMI was induced by ligation of the left anterior descending coronary artery. Remote cyclic compression (RCC) on forelimb was applied to AMI rats for 3 days after the operation. RCC postconditioning displayed cardioprotective effects against AMI injury by limiting infarct size, alleviating cardiac dysfunction, and suppressing cardiomyocyte apoptosis. In addition, RCC postconditioning induced myocardial autophagy as evidenced by increased LC3-II and Beclin-1 and reduced mTOR levels. Furthermore, RCC treatment upregulated AMPK phosphorylation in the context of AMI hearts. AMPK inhibitor Compound C administration markedly abrogated RCC-mediated cardioprotective effect, as evidenced by decreased infarct size and cardiac function. CONCLUSION Our results indicated that RCC postconditioning could attenuate AMI injury through inhibiting apoptosis and promoting autophagy via AMPK signaling pathway. The research provided a novel perspective for studying the cardioprotection of RIC and possible therapeutic strategy for managing AMI injury.
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Affiliation(s)
- Senlei Xu
- School of Acupuncture and Tuina, School of Regimen and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing, China; Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xuefeng Xia
- School of Acupuncture and Tuina, School of Regimen and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yuchen Liu
- School of Acupuncture and Tuina, School of Regimen and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing, China
| | - Fang Chen
- Dermatological Department, Jiangsu Province Hospital of Chinese Medicine, Nanjing, China
| | - Renjun Gu
- The First School of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xiangyu Bian
- School of Acupuncture and Tuina, School of Regimen and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xin Xu
- School of Acupuncture and Tuina, School of Regimen and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing, China
| | - Chengjie Jia
- Wuxi Municipal Rehabilitation Hospital, Wuxi, China
| | - Shengfeng Lu
- School of Acupuncture and Tuina, School of Regimen and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing, China; Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yihuang Gu
- School of Acupuncture and Tuina, School of Regimen and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing, China
| | - Hua Bai
- School of Acupuncture and Tuina, School of Regimen and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing, China.
| | - Hongru Zhang
- School of Acupuncture and Tuina, School of Regimen and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing, China.
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14
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Joshi H, Vastrad B, Joshi N, Vastrad C. Integrated bioinformatics analysis reveals novel key biomarkers in diabetic nephropathy. SAGE Open Med 2022; 10:20503121221137005. [PMID: 36385790 PMCID: PMC9661593 DOI: 10.1177/20503121221137005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 10/18/2022] [Indexed: 11/13/2022] Open
Abstract
Objectives: The underlying molecular mechanisms of diabetic nephropathy have yet not been investigated clearly. In this investigation, we aimed to identify key genes involved in the pathogenesis and prognosis of diabetic nephropathy. Methods: We downloaded next-generation sequencing data set GSE142025 from Gene Expression Omnibus database having 28 diabetic nephropathy samples and nine normal control samples. The differentially expressed genes between diabetic nephropathy and normal control samples were analyzed. Biological function analysis of the differentially expressed genes was enriched by Gene Ontology and REACTOME pathways. Then, we established the protein–protein interaction network, modules, miRNA-differentially expressed gene regulatory network and transcription factor-differentially expressed gene regulatory network. Hub genes were validated by using receiver operating characteristic curve analysis. Results: A total of 549 differentially expressed genes were detected including 275 upregulated and 274 downregulated genes. The biological process analysis of functional enrichment showed that these differentially expressed genes were mainly enriched in cell activation, integral component of plasma membrane, lipid binding, and biological oxidations. Analyzing the protein–protein interaction network, miRNA-differentially expressed gene regulatory network and transcription factor-differentially expressed gene regulatory network, we screened hub genes MDFI, LCK, BTK, IRF4, PRKCB, EGR1, JUN, FOS, ALB, and NR4A1 by the Cytoscape software. The receiver operating characteristic curve analysis confirmed that hub genes were of diagnostic value. Conclusions: Taken above, using integrated bioinformatics analysis, we have identified key genes and pathways in diabetic nephropathy, which could improve our understanding of the cause and underlying molecular events, and these key genes and pathways might be therapeutic targets for diabetic nephropathy.
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Affiliation(s)
- Harish Joshi
- Endocrine and Diabetes Care Center, Hubbali, India
| | - Basavaraj Vastrad
- Department of Pharmaceutical Chemistry, KLE Society’s College of Pharmacy, Gadag, India
| | - Nidhi Joshi
- Dr. D. Y. Patil Medical College, Kolhapur, India
| | - Chanabasayya Vastrad
- Biostatistics and Bioinformatics, Chanabasava Nilaya, Dharwad, India
- Chanabasayya Vastrad, Biostatistics and Bioinformatics, Chanabasava Nilaya, Bharthinagar, Dharwad 580001, India.
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15
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Inhibition of GARS1-DT Protects Against Hypoxic Injury in H9C2 Cardiomyocytes via Sponging miR-212-5p. J Cardiovasc Pharmacol 2021; 78:e714-e721. [PMID: 34483291 DOI: 10.1097/fjc.0000000000001129] [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] [Received: 03/29/2021] [Accepted: 07/19/2021] [Indexed: 11/26/2022]
Abstract
ABSTRACT The present study aimed to elucidate the function of long noncoding RNA GARS1-DT in hypoxia-induced injury in ex-vivo cardiomyocytes and explore its underlying mechanism. Hypoxic injury was confirmed in H9C2 cells by the determination of cell viability, migration, invasion, and apoptosis. GARS1-DT expression was estimated in H9C2 cells after hypoxia. We then measured the effects of GARS1-DT knockdown on hypoxia-induced H9C2 cells. The interaction between GARS1-DT and miR-212-5p was also investigated. Hypoxia treatment led to cell damage in H9C2 cardiomyocytes, accompanied with the upregulation of GARS1-DT expression. Transfection of GARS1-DT small interfering RNA remarkably attenuated hypoxia-induced injury by enhancing cell viability, migration, and invasion, and reducing apoptosis. Furthermore, GARS1-DT served as an endogenous sponge for miR-212-5p, and its expression was negatively regulated by GARS1-DT. The effects of GARS1-DT knockdown on hypoxia-induced injury were significantly abrogated by miR-212-5p silence. Besides, suppression of GARS1-DT activated PI3K/AKT pathway in hypoxia-treated H9C2 cells, which were reversed by inhibition of miR-212-5p. Our findings demonstrated the novel molecular mechanism of GARS1-DT/miR-212-5p/PI3K/AKT axis on the regulation of hypoxia-induced myocardial injury in H9C2 cells, which may provide potential therapeutic targets for acute myocardial infarction treatment.
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16
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Wang C, Qi C, Liu M, Wang L, Cheng G, Li L, Xing Y, Zhao X, Liu J. Protective effects of agrimonolide on hypoxia-induced H9c2 cell injury by maintaining mitochondrial homeostasis. J Cell Biochem 2021; 123:306-321. [PMID: 34724244 DOI: 10.1002/jcb.30169] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 10/12/2021] [Accepted: 10/18/2021] [Indexed: 12/19/2022]
Abstract
Cardiomyocyte death caused by hypoxia is one of the main causes of myocardial infarction or heart failure, and mitochondria play an important role in this process. Agrimonolide (AM) is a monomeric component extracted from Agrimonia pilosa L. and has antioxidant, antitumor, and anti-inflammatory effects. This study aimed to investigate the role and mechanism of AM in improving hypoxia-induced H9c2 cell damage. The results showed that low AM concentrations promote H9c2 cell proliferation and increase cellular ATP content. Transcriptome sequencing showed that AM induces differential expression of genes in H9c2 cells. Gene ontology (GO) function and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses revealed that these genes were concentrated in mitochondrial function. Subsequent experiments confirmed that AM regulates hypoxia-induced cell cycle arrest. AM inhibited the rate of apoptosis by regulating the expression of apoptosis-related proteins, reducing the level of cleaved Caspase 3 and Bax, and increasing the level of Bcl2, thereby protecting H9c2 cells from hypoxia-induced apoptosis. AM restored the mitochondrial membrane potential, inhibited the generation of ROS, maintained the normal shape of the mitochondria, improved the level of the mitochondrial functional proteins OPA1, MFN1, MFN2, Tom20, and increased the level of ATP. In conclusion, AM protects H9c2 cells from hypoxia-induced cell damage.
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Affiliation(s)
- Cheng Wang
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong, China
| | - Changxi Qi
- Research Center for Animal Disease Control Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Mingchao Liu
- College of Veterinary Medicine, Hebei Agricultural University, Baoding, Hebei, China
| | - Lumei Wang
- Research Center for Animal Disease Control Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Guodong Cheng
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong, China
| | - Liping Li
- Research Center for Animal Disease Control Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Yuxiao Xing
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong, China
| | - Xiaona Zhao
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong, China
| | - Jianzhu Liu
- Research Center for Animal Disease Control Engineering, Shandong Agricultural University, Tai'an, Shandong, China
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Wang T, Cai W, Wu Q, Chen D, Wang P, Xu Z. Exosomal lncRNA Nuclear Paraspeckle Assembly Transcript 1 (NEAT1)contributes to the progression of allergic rhinitis via modulating microRNA-511/Nuclear Receptor Subfamily 4 Group A Member 2 (NR4A2) axis. Bioengineered 2021; 12:8067-8079. [PMID: 34672863 PMCID: PMC8806616 DOI: 10.1080/21655979.2021.1982313] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Allergic rhinitis (AR) is a common chronic disease characterized by inflammation of the nasal mucosa. Long non-coding RNA (LncRNA) has been reported to be involved in the pathogenesis of various diseases. However, the biological roles of lncRNA Nuclear Paraspeckle Assembly Transcript 1 (NEAT1) in AR are still unclear. The mRNA levels of NEAT1, miR-511, and Nuclear Receptor Subfamily 4 Group A Member 2 (NR4A2) were detected by RT-qPCR. The protein levels of exosomal markers were examined by western blot. ELISA was used to assess the levels of GM-CSF, eotaxin-1, and MUC5AC. The cell viability and apoptosis were evaluated by CCK-8 and TUNEL assays. In this study, we found that the NEAT1 level was highly expressed in AR and IL-13-treated HNECs. NEAT1 interference significantly suppressed levels of GM-CSF, eotaxin-1, and MUC5AC and apoptosis rate, but promoted the viability of IL-13-treated human nasal epithelial cells (HNECs). Moreover, exosomes containing NEAT1 induced inflammatory cytokine production and apoptosis, while NEAT1 depletion abrogated these effects. In addition, NEAT1 directly interacted with miR-511, and the inhibition of miR-511 partially restored the inhibitory effects of NEAT1 silencing on inflammatory cytokine, mucus production, and apoptosis in IL-13-stimulated HNECs. Furthermore, miR-511 could bind to the 3ʹUTR of NR4A2, and the inhibition of miR-511 increased levels of inflammatory factors and apoptosis rate, which was counteracted by depleting NR4A2. In conclusion, our data revealed that exosomal NEAT1 contributed to the pathogenesis of AR through the miR-511/NR4A2 axis. These findings might offer novel strategies for the prevention and treatment of AR.
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Affiliation(s)
- Tao Wang
- Department of Otolaryngology Head & Neck Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Weiyu Cai
- Department of Otolaryngology Head & Neck Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Qinwei Wu
- Department of Otolaryngology Head & Neck Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Dong Chen
- Department of Otolaryngology Head & Neck Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Peihua Wang
- Department of Otolaryngology Head & Neck Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhou Xu
- Department of Otolaryngology Head & Neck Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Wang YH, Li CX, Stephenson JM, Marrelli SP, Kou YM, Meng DZ, Wu T. NR4A3 and CCL20 clusters dominate the genetic networks in CD146 + blood cells during acute myocardial infarction in humans. Eur J Med Res 2021; 26:113. [PMID: 34565470 PMCID: PMC8474787 DOI: 10.1186/s40001-021-00586-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 09/16/2021] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND CD146 is a tight junction-associated molecule involved in maintaining endothelial barrier, and balancing immune-inflammation response, in cardiovascular disease. Notably, peripheral CD146+ cells significantly upsurge under vessel dyshomeostasis such as acute myocardial injury (AMI), appearing to be a promising therapeutic target. In this study, with a new view of gene correlation, we aim at deciphering the complex underlying mechanism of CD146+ cells' impact in the development of AMI. METHODS Transcription dataset GSE 66,360 of CD146+ blood cells from clinical subjects was downloaded from NCBI. Pearson networks were constructed and the clustering coefficients were calculated to disclose the differential connectivity genes (DCGs). Analysis of gene connectivity and gene expression were performed to reveal the hub genes and hub gene clusters followed by gene enrichment analysis. RESULTS AND CONCLUSIONS Among the total 23,520 genes, 27 genes out of 126 differential expression genes were identified as DCGs. These DCGs were found in the periphery of the networks under normal condition, but transferred to the functional center after AMI. Moreover, it was revealed that DCGs spontaneously crowded together into two functional models, CCL20 cluster and NR4A3 cluster, influencing the CD146-mediated signaling pathways during the pathology of AMI for the first time.
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Affiliation(s)
- Yan-Hui Wang
- College of Mathematics and Systems Science, Shandong University of Science and Technology, 579 Qianwangang Road, Huangdao District, Qingdao, 266590, Shandong, China.
| | - Chen-Xin Li
- College of Mathematics and Systems Science, Shandong University of Science and Technology, 579 Qianwangang Road, Huangdao District, Qingdao, 266590, Shandong, China
| | - Jessica M Stephenson
- Department of Neurology, University of Texas Health Science Center at Houston, 6431 Fannin street, Houston, TX, 77031, USA
| | - Sean P Marrelli
- Department of Neurology, University of Texas Health Science Center at Houston, 6431 Fannin street, Houston, TX, 77031, USA
| | - Yan-Ming Kou
- College of Mathematics and Systems Science, Shandong University of Science and Technology, 579 Qianwangang Road, Huangdao District, Qingdao, 266590, Shandong, China
| | - Da-Zhi Meng
- College of Applied Science, Beijing University of Technology, 100 Pingleyuan, Beijing, 10024, Chaoyang, China.
| | - Ting Wu
- Department of Neurology, University of Texas Health Science Center at Houston, 6431 Fannin street, Houston, TX, 77031, USA.
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Qian Q, Xie Y. Propofol protects H9C2 cells against hypoxia/reoxygenation injury through miR-449a and NR4A2. Exp Ther Med 2021; 22:1181. [PMID: 34475971 PMCID: PMC8406901 DOI: 10.3892/etm.2021.10615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 06/25/2021] [Indexed: 12/31/2022] Open
Abstract
Propofol has been revealed to protect cardiomyocytes against myocardial ischemia injury, although the underlying mechanism remains incompletely understood. H9C2 cells were used to generate a hypoxia/reoxygenation (H/R) in vitro model for the present study. Reverse transcription-quantitative PCR and western blotting were performed to measure the expression levels of microRNA (miR)-449a and nuclear receptor subfamily 4 group A member 2 (NR4A2). The CCK-8, BrdU, EdU, and caspase-3 activity assays and western blot analysis were employed to detect cell viability, proliferation, and apoptosis. The target relationship between miR-449a and NR4A2 was verified through dual-luciferase reporter assays. The results confirmed that exposure of the cells to H/R resulted in severe cell injury. However, the presence of propofol improved cell activity by promoting cell viability and proliferation and inhibiting cell apoptosis. The beneficial effect of propofol on H/R-mediated injury could be abrogated by the inhibition of NR4A2 mediated by miR-449a. Thus, the present study demonstrated that propofol counteracted cardiomyocyte H/R injury by inhibiting miR-449a to upregulate NR4A2.
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Affiliation(s)
- Qiu Qian
- Department of Anesthesiology, Children's Hospital of Soochow University, Suzhou, Jiangsu 215000, P.R. China
| | - Yingxiang Xie
- Department of Anesthesiology, Children's Hospital of Soochow University, Suzhou, Jiangsu 215000, P.R. China
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20
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Wu R, Li J, Li J, Zhang N, Zhou W, Ren L, Chen Q, Li Y. Construction of Competing Endogenous RNA Networks Incorporating Transcription Factors to Reveal Differences in Granulosa Cells from Patients with Endometriosis. Genet Test Mol Biomarkers 2021; 25:453-462. [PMID: 34280006 DOI: 10.1089/gtmb.2020.0152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Purpose: This study aimed to reveal the molecular differences in granulosa cells (GCs) from patients with endometriosis (EM). Methods: RNA sequencing was performed on GCs from patients with EM-related infertility (n = 3) and controls (n = 3). Differentially expressed long noncoding RNAs [differentially expressed lncRNAs (DELs), |log2 FC|>4, false discovery rate (FDR) <0.05] and genes [differentially expressed genes (DEGs), |log2 FC|>1.4, FDR <0.05] in patients with EM-related infertility and controls were screened. Protein-protein interaction (PPI) networks of the DEGs were constructed. Then, mRNA-miRNA-lncRNA pairs based on DEGs and DELs were constructed by comprehensive bioinformatics analyses. In addition, overlapping genes identified from both the PPI and mRNA-miRNA-lncRNA pairs were selected. Finally, a competing endogenous RNA (ceRNA) network incorporating transcription factors (TFs) was constructed. Results: A total of 25,806 lncRNAs and 19,684 mRNAs were detected, and 7 DELs and 46 DEGs were identified. Five hub genes from the PPI network were also identified. A single overlapping gene, NR4A2, from both the PPI network and mRNA-miRNA-lncRNA pairs was identified. Finally, a ceRNA network incorporating TFs, including one mRNA (NR4A2), one miRNA (hsa-miR-217), three lncRNAs (XIST, MCM3AP-AS1, and C17orf51), and five TFs (SRF, POLR2A, NRF1, MNT, and TCF7L2), was successfully constructed. Conclusions: The proposed ceRNA network and the prediction of TFs in GCs from EM-related infertility revealed differences in GCs from patients with EM. Importantly, the novel TFs, lncRNAs, miRNAs, and mRNAs involved in the ceRNA network might provide new insights into the underlying molecular mechanisms of EM-related infertility.
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Affiliation(s)
- Rongfeng Wu
- Reproductive Medical Center, and The First Affiliated Hospital, School of Medicine, Xiamen University, Fujian, P.R. China
| | - Junzui Li
- The Key Laboratory of Research and Diagnosis of Gynecological Diseases of Xiamen and Department of Obstetrics and Gynecology, The First Affiliated Hospital, School of Medicine, Xiamen University, Fujian, P.R. China
| | - Jingjing Li
- School of Life Sciences, Xiamen University, Fujian, P.R. China
| | - Ningqing Zhang
- The Key Laboratory of Research and Diagnosis of Gynecological Diseases of Xiamen and Department of Obstetrics and Gynecology, The First Affiliated Hospital, School of Medicine, Xiamen University, Fujian, P.R. China
| | - Weidong Zhou
- Reproductive Medical Center, and The First Affiliated Hospital, School of Medicine, Xiamen University, Fujian, P.R. China
| | - Lulu Ren
- Reproductive Medical Center, and The First Affiliated Hospital, School of Medicine, Xiamen University, Fujian, P.R. China
| | - Qionghua Chen
- The Key Laboratory of Research and Diagnosis of Gynecological Diseases of Xiamen and Department of Obstetrics and Gynecology, The First Affiliated Hospital, School of Medicine, Xiamen University, Fujian, P.R. China
| | - Youzhu Li
- Reproductive Medical Center, and The First Affiliated Hospital, School of Medicine, Xiamen University, Fujian, P.R. China
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21
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Identification of feature autophagy-related genes in patients with acute myocardial infarction based on bioinformatics analyses. Biosci Rep 2021; 40:225582. [PMID: 32597946 PMCID: PMC7350888 DOI: 10.1042/bsr20200790] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 06/18/2020] [Accepted: 06/29/2020] [Indexed: 01/15/2023] Open
Abstract
Objective: To identify feature autophagy-related genes (ARGs) in patients with acute myocardial infarction (AMI) and further investigate their value in the diagnosis of AMI. Methods: Gene microarray expression data of AMI peripheral blood samples were downloaded from the GSE66360 dataset. The data were randomly classified into a discovery cohort (21 AMI patients and 22 healthy controls) and a validation cohort (28 AMI patients and 28 healthy controls). Differentially expressed ARGs between patients with AMI and healthy controls in the discovery cohort were identified using a statistical software package. Feature ARGs were screened based on support vector machine-recursive feature elimination (SVM-RFE), and an SVM classifier was constructed. Receiver operating characteristic (ROC) analysis was used to investigate the predictive value of the classifier, which was further verified in an independent external cohort. Results: A total of seven genes were identified based on SVM-RFE. The SVM classifier had an excellent discrimination ability in both the discovery cohort (area under the curve [AUC] = 0.968) and the validation cohort (AUC = 0.992), which was further confirmed in the GSE48060 dataset (AUC = 0.963). Furthermore, the SVM classifier showed outstanding discrimination between AMI patients with and without recurrent events in the independent external cohort (AUC = 0.992). The identified genes are mainly involved in the cellular response to autophagy, macroautophagy, apoptosis, and the FoxO signaling pathway. Conclusion: Our study identified feature ARGs and indicated their potential roles in AMI diagnosis to improve our understanding of the molecular mechanism underlying the occurrence of AMI.
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Zhang X, Chen Z, Zang J, Yao C, Shi J, Nie R, Wu G. LncRNA-mRNA co-expression analysis discovered the diagnostic and prognostic biomarkers and potential therapeutic agents for myocardial infarction. Aging (Albany NY) 2021; 13:8944-8959. [PMID: 33668039 PMCID: PMC8034908 DOI: 10.18632/aging.202713] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 02/09/2021] [Indexed: 12/14/2022]
Abstract
Currently, the role of lncRNA in myocardial infarction (MI) is poorly understood. 17 co-expression modules were determined, specifically, the greenyellow, saddlebrown, grey60, royalblue, lightgreen, white, and pink modules were specifically expressed in the acute phase of MI, and brown, darkred, and royalblue, while greenyellow modules were specifically expressed in MI compared with CAD. 12 time-dependent of lncRNA/mRNA clusters with consistent expression trends were also identified. MI-associated modules were mainly enriched to immune, cell cycle, and metabolic pathways. We further obtained a network of 1816 lncRNA-mRNAs with higher expression correlations among these lncRNAs by analyzing the topological properties of the network. Herein, lncRNA RP11-847H18.2 and KLHL28, SPRTN, and EPM2AIP1 were determined as gene markers specifically expressed in MI, and they demonstrated a high predictive performance for MI diagnosis and prognosis. Three drugs, namely, Calcium citrate, Calcium Phosphate, and Calcium phosphate dihydrate, were identified as potential precursors of MI. Finally, gene and lncRNA diagnostic models were developed based on these genes and lncRNAs, with their AUCs averaged above 0.89 in both training and validation datasets. The findings of this study improve the diagnosis and prognosis of MI and personalized treatment of MI.
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Affiliation(s)
- Xiaocong Zhang
- Department of Cardiology, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou, China.,Department of Cardiology, The Eighth Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong, China
| | - Ziqi Chen
- Department of Cardiology, The Eighth Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong, China
| | - Jiabin Zang
- Department of Cardiology, The Eighth Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong, China
| | - Chun Yao
- Department of Cardiology, The Eighth Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong, China
| | - Jian Shi
- Department of Cardiology, The Eighth Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong, China
| | - Ruqiong Nie
- Department of Cardiology, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Guifu Wu
- Department of Cardiology, The Eighth Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong, China.,Guangdong Innovative Engineering and Technology Research Center for Assisted Circulation, Shenzhen, China.,NHC Key Laboratory of Assisted Circulation, Sun Yat-Sen University, Guangzhou, Guangdong, China
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23
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Chen J, Jia J, Ma L, Li B, Qin Q, Qian J, Ge J. Nur77 deficiency exacerbates cardiac fibrosis after myocardial infarction by promoting endothelial-to-mesenchymal transition. J Cell Physiol 2020; 236:495-506. [PMID: 32542822 DOI: 10.1002/jcp.29877] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 05/10/2020] [Accepted: 05/27/2020] [Indexed: 12/12/2022]
Abstract
Cardiac fibrosis is a reparative process after myocardial infarction (MI), which leads to cardiac remodeling and finally heart failure. Endothelial-to-mesenchymal transition (EndMT) is induced after MI and contributes to cardiac fibrosis after MI. Orphan nuclear receptor Nur77 is a key regulator of inflammation, angiogenesis, proliferation, and apoptosis in vascular endothelial cells. Here, we investigated the role of orphan nuclear receptor Nur77 in EndMT and cardiac fibrosis after MI. Cardiac fibrosis was induced through MI by ligation of the left anterior descending coronary artery. We demonstrated that Nur77 knockout aggravated cardiac dysfunction and cardiac fibrosis 30 days after MI. Moreover, Nur77 deficiency resulted in enhanced EndMT as shown by increased expression of FSP-1, SM22α, Snail, and decreased expression of PECAM-1 and eNOS compared with wild-type mice after MI. Then, we found overexpression Nur77 in human coronary artery endothelial cells significantly inhibited interleukin 1β and transforming growth factor β2-induced EndMT, as shown by a reduced transition to a fibroblast-like phenotype and preserved angiogenesis potential. Mechanistically, we demonstrated that Nur77 downregulated EndMT by inhibiting the nuclear factor-κB-dependent pathway. In conclusion, Nur77 is involved in cardiac fibrosis by inhibiting EndMT and may be a promising target for therapy of cardiac fibrosis after MI.
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Affiliation(s)
- Jiahui Chen
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jianguo Jia
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Leilei Ma
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Bingyu Li
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Qing Qin
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Juying Qian
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Junbo Ge
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
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24
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Bmi1 inhibitor PTC-209 promotes Chemically-induced Direct Cardiac Reprogramming of cardiac fibroblasts into cardiomyocytes. Sci Rep 2020; 10:7129. [PMID: 32346096 PMCID: PMC7189257 DOI: 10.1038/s41598-020-63992-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 04/06/2020] [Indexed: 12/13/2022] Open
Abstract
The development of therapeutic approaches based on direct cardiac reprogramming of fibroblasts into induced-cardiomyocytes (iCM) has emerged as an attractive strategy to repair the injured myocardium. The identification of the mechanisms driving lineage conversion represents a crucial step toward the development of new and more efficient regenerative strategies. To this aim, here we show that pre-treatment with the Bmi1 inhibitor PTC-209 is sufficient to increase the efficiency of Chemical-induced Direct Cardiac Reprogramming both in mouse embryonic fibroblasts and adult cardiac fibroblasts. PTC-209 induces an overall increase of spontaneously beating iCM at end-stage of reprogramming, expressing high levels of late cardiac markers Troponin T and myosin muscle light chain-2v. The inhibition of Bmi1 expression occurring upon PTC-209 pre-treatment was maintained throughout the reprogramming protocol, contributing to a significant gene expression de-regulation. RNA profiling revealed that, upon Bmi1 inhibition a significant down-regulation of genes associated with immune and inflammatory signalling pathways occurred, with repression of different genes involved in interleukin, cytokine and chemokine pathways. Accordingly, we observed the down-regulation of both JAK/STAT3 and MAPK/ERK1-2 pathway activation, highlighting the crucial role of these pathways as a barrier for cardiac reprogramming. These findings have significant implications for the development of new cardiac regenerative therapies.
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25
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Yao B, Wan X, Zheng X, Zhong T, Hu J, Zhou Y, Qin A, Ma Y, Yin D. Critical roles of microRNA-141-3p and CHD8 in hypoxia/reoxygenation-induced cardiomyocyte apoptosis. Cell Biosci 2020; 10:20. [PMID: 32123560 PMCID: PMC7035710 DOI: 10.1186/s13578-020-00384-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 02/11/2020] [Indexed: 12/11/2022] Open
Abstract
Background Cardiovascular diseases are currently the leading cause of death in humans. The high mortality of cardiac diseases is associated with myocardial ischemia and reperfusion (I/R). Recent studies have reported that microRNAs (miRNAs) play important roles in cell apoptosis. However, it is not known yet whether miR-141-3p contributes to the regulation of cardiomyocyte apoptosis. It has been well established that in vitro hypoxia/reoxygenation (H/R) model can follow in vivo myocardial I/R injury. This study aimed to investigate the effects of miR-141-3p and CHD8 on cardiomyocyte apoptosis following H/R. Results We found that H/R remarkably reduces the expression of miR-141-3p but enhances CHD8 expression both in mRNA and protein in H9c2 cardiomyocytes. We also found either overexpression of miR-141-3p by transfection of miR-141-3p mimics or inhibition of CHD8 by transfection of small interfering RNA (siRNA) significantly decrease cardiomyocyte apoptosis induced by H/R. Moreover, miR-141-3p interacts with CHD8. Furthermore, miR-141-3p and CHD8 reduce the expression of p21. Conclusion MiR-141-3p and CHD8 play critical roles in cardiomyocyte apoptosis induced by H/R. These studies suggest that miR-141-3p and CHD8 mediated cardiomyocyte apoptosis may offer a novel therapeutic strategy against myocardial I/R injury-induced cardiovascular diseases.
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Affiliation(s)
- Bifeng Yao
- 1Xiangya School of Pharmaceutical Science, Central South University, Changsha, 410008 Hunan China
| | - Xiaoya Wan
- 1Xiangya School of Pharmaceutical Science, Central South University, Changsha, 410008 Hunan China
| | - Xinbin Zheng
- 1Xiangya School of Pharmaceutical Science, Central South University, Changsha, 410008 Hunan China
| | - Ting Zhong
- 1Xiangya School of Pharmaceutical Science, Central South University, Changsha, 410008 Hunan China
| | - Jia Hu
- 1Xiangya School of Pharmaceutical Science, Central South University, Changsha, 410008 Hunan China
| | - Yu Zhou
- 2Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, 430060 Hubei China
| | - Anna Qin
- 1Xiangya School of Pharmaceutical Science, Central South University, Changsha, 410008 Hunan China
| | - Yeshuo Ma
- 1Xiangya School of Pharmaceutical Science, Central South University, Changsha, 410008 Hunan China
| | - Deling Yin
- 1Xiangya School of Pharmaceutical Science, Central South University, Changsha, 410008 Hunan China.,3Department of Internal Medicine, College of Medicine, East Tennessee State University, Johnson City, TN 37604 USA
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Qiang Z, Jin B, Peng Y, Zhang Y, Wang J, Chen C, Wang X, Liu F. miR-762 modulates thyroxine-induced cardiomyocyte hypertrophy by inhibiting Beclin-1. Endocrine 2019; 66:585-595. [PMID: 31522342 DOI: 10.1007/s12020-019-02048-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 08/05/2019] [Indexed: 01/07/2023]
Abstract
PURPOSE Whether autophagy plays a key role in thyroxine-induced cardiomyocyte hypertrophy, and whether the role of autophagy in thyroxine-induced cardiomyocyte hypertrophy is related to targeting of Beclin-1 by miR-762 remains unclear. This research focused on testing these two hypotheses. Importantly, the results of this study will help us better understand the molecular mechanisms of thyroxine-induced cardiomyocyte hypertrophy. METHODS In vivo and in vitro, RT-PCR, western blot, and dual luciferase reporter assay were performed to understand the molecular mechanism of thyroxine-induced cardiomyocyte hypertrophy. HE staining, Masson staining, transmission electron microscopy, and immunofluorescence were used to observe intuitively changes of hearts and cardiomyocytes. RESULTS Our results showed that in vivo, serum TT3, TT4, and heart rate were significantly upregulated in the T4 group compared with the control group. Moreover, the surface area of cardiomyocytes was significantly increased in the T4 group, and the structural disorder was accompanied by obvious hyperplasia of collagen fibers. The expression of ANP, and β-MHC was significantly upregulated in the T4 group. In addition, LC3 II/LC3 I, Beclin-1 and the count of autophagic vacuoles were significantly upregulated, but miR-762 was significantly downregulated in the T4 group compared to the control group. Subsequently, a dual luciferase reporter assay suggested that Beclin-1 was the target gene of miR-762. In vitro, the results for the T3 group were consistent with the results for the T4 group. Furthermore, cardiomyocyte hypertrophy and autophagic activity were attenuated in the T3 + miR-762 mimic group compared with the T3 group. In contrast, cardiomyocyte hypertrophy and autophagic activity were aggravated in the T3 + miR-762 inhibitor group compared with the T3 group. CONCLUSIONS miR-762 modulates thyroxine-induced cardiomyocyte hypertrophy by inhibiting Beclin-1.
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Affiliation(s)
- Zheng Qiang
- Department of Anatomy, Guilin Medical University, 541004, Guilin, China.
| | - Beifang Jin
- Department of Anatomy, Guilin Medical University, 541004, Guilin, China
| | - Yuntao Peng
- Department of Anatomy, Guilin Medical University, 541004, Guilin, China
| | - Yan Zhang
- Department of Anatomy, Guilin Medical University, 541004, Guilin, China
| | - Junfeng Wang
- Department of Anatomy, Guilin Medical University, 541004, Guilin, China
| | - Chen Chen
- Department of Anatomy, Guilin Medical University, 541004, Guilin, China
| | - Xinfeng Wang
- Department of Anatomy, Guilin Medical University, 541004, Guilin, China
| | - Fang Liu
- Department of Anatomy, Guilin Medical University, 541004, Guilin, China.
- Center of Diabetic Systems Medicine, Guangxi Key Laboratory of Excellence, Guilin Medical University, 541004, Guilin, China.
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Jiang Y, Feng YP, Tang LX, Yan YL, Bai JW. The protective role of NR4A3 in acute myocardial infarction by suppressing inflammatory responses via JAK2-STAT3/NF-κB pathway. Biochem Biophys Res Commun 2019; 517:697-702. [DOI: 10.1016/j.bbrc.2019.07.116] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 07/29/2019] [Indexed: 02/01/2023]
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Miralles F, Collinot H, Boumerdassi Y, Ducat A, Duché A, Renault G, Marchiol C, Lagoutte I, Bertholle C, Andrieu M, Jacques S, Méhats C, Vaiman D. Long-term cardiovascular disorders in the STOX1 mouse model of preeclampsia. Sci Rep 2019; 9:11918. [PMID: 31417152 PMCID: PMC6695383 DOI: 10.1038/s41598-019-48427-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 07/31/2019] [Indexed: 12/14/2022] Open
Abstract
Adverse long-term cardiovascular (CV) consequences of PE are well established in women. However, the mechanism responsible for that risk remains unknown. Here, we mated wild-type female mice of the FVB/N strain to STOX1A-overexpressing mice to mimic severe PE and investigated the long-term consequences on the maternal cardiovascular system. Ultrasonography parameters were analyzed in mice before pregnancy and at 3 and 6 months post-pregnancy. At 6 months post-pregnancy, cardiac stress test induced by dobutamine injection revealed an abnormal ultrasonography Doppler profile in mice with previous PE. Eight months post-pregnancy, the heart, endothelial cells (ECs) and plasma of females were analyzed and compared to controls. The heart of mice with PE showed left-ventricular hypertrophy associated with altered histology (fibrosis). Transcriptomic analysis revealed the deregulation of 1149 genes in purified ECs and of 165 genes in the hearts, many being involved in heart hypertrophy. In ECs, the upregulated genes were associated with inflammation and cellular stress. Systems biology analysis identified interleukin 6 (IL-6) as a hub gene connecting these pathways. Plasma profiling of 33 cytokines showed that, 8 of them (Cxcl13, Cxcl16, Cxcl11, IL-16, IL-10, IL-2, IL-4 and Ccl1) allowed to discriminate mice with previous PE from controls. Thus, PE triggers female long-term CV consequences on the STOX1 mouse model.
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Affiliation(s)
- Francisco Miralles
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Team "From Gametes To Birth", 24 rue du Faubourg St Jacques, 75014, Paris, France
| | - Hélène Collinot
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Team "From Gametes To Birth", 24 rue du Faubourg St Jacques, 75014, Paris, France
| | - Yasmine Boumerdassi
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Team "From Gametes To Birth", 24 rue du Faubourg St Jacques, 75014, Paris, France
| | - Aurélien Ducat
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Team "From Gametes To Birth", 24 rue du Faubourg St Jacques, 75014, Paris, France
| | - Angéline Duché
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Genom'IC Platform, Bâtiment Gustave Roussy, 27 rue du faubourg Saint Jacques, 75014, Paris, France
| | - Gilles Renault
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, PIV Platform, 22 rue Méchain, 75014, Paris, France
| | - Carmen Marchiol
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, PIV Platform, 22 rue Méchain, 75014, Paris, France
| | - Isabelle Lagoutte
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, PIV Platform, 22 rue Méchain, 75014, Paris, France
| | - Céline Bertholle
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, CYBIO Platform, 27 rue du Faubourg Saint Jacques, 75014, Paris, France
| | - Muriel Andrieu
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, CYBIO Platform, 27 rue du Faubourg Saint Jacques, 75014, Paris, France
| | - Sébastien Jacques
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Genom'IC Platform, Bâtiment Gustave Roussy, 27 rue du faubourg Saint Jacques, 75014, Paris, France
| | - Céline Méhats
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Team "From Gametes To Birth", 24 rue du Faubourg St Jacques, 75014, Paris, France
| | - Daniel Vaiman
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Team "From Gametes To Birth", 24 rue du Faubourg St Jacques, 75014, Paris, France.
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Ashraf S, Hegazy YK, Harmancey R. Nuclear receptor subfamily 4 group A member 2 inhibits activation of ERK signaling and cell growth in response to β-adrenergic stimulation in adult rat cardiomyocytes. Am J Physiol Cell Physiol 2019; 317:C513-C524. [PMID: 31188636 PMCID: PMC6766613 DOI: 10.1152/ajpcell.00526.2018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Sustained elevation of sympathetic activity is an important contributor to pathological cardiac hypertrophy, ventricular arrhythmias, and left ventricular contractile dysfunction in chronic heart failure. The orphan nuclear receptor NR4A2 is an immediate early-response gene activated in the heart under β-adrenergic stimulation. The goal of this study was to identify the transcriptional remodeling events induced by increased NR4A2 expression in cardiomyocytes and their impact on the physiological response of those cells to sustained β-adrenergic stimulation. Treatment of adult rat ventricular myocytes with isoproterenol induced a rapid (<4 h) increase in NR4A2 levels that was accompanied by a transient (<24 h) increase in nuclear localization of the transcription factor. Adenovirus-mediated overexpression of NR4A2 to similar levels modulated the expression of genes linked to adrenoceptor signaling, calcium signaling, cell growth and proliferation and counteracted the increase in protein synthesis rate and cell surface area mediated by chronic isoproterenol stimulation. Consistent with those findings, NR4A2 overexpression also blocked the phosphorylative activation of growth-related kinases ERK1/2, Akt, and p70 S6 kinase. Prominent among the transcriptional changes induced by NR4A2 was the upregulation of the dual-specificity phosphatases DUSP2 and DUSP14, two known inhibitors of ERK1/2. Pretreatment of NR4A2-overexpressing cardiomyocytes with the DUSP inhibitor BCI [(E)-2-benzylidene-3-(cyclohexylamino)-2,3-dihydro-1H-inden-1-one] prevented the inhibition of ERK1/2 following isoproterenol stimulation. In conclusion, our results suggest that NR4A2 acts as a novel negative feedback regulator of the β-adrenergic receptor-mediated growth response in cardiomyocytes and this at least partly through DUSP-mediated inhibition of ERK1/2 signaling.
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Affiliation(s)
- Sadia Ashraf
- Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi.,Mississippi Center for Obesity Research, University of Mississippi Medical Center, Jackson, Mississippi.,Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, Mississippi
| | - Yassmin K Hegazy
- Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi.,Mississippi Center for Obesity Research, University of Mississippi Medical Center, Jackson, Mississippi.,Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, Mississippi
| | - Romain Harmancey
- Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi.,Mississippi Center for Obesity Research, University of Mississippi Medical Center, Jackson, Mississippi.,Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, Mississippi
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Polydatin mediates Parkin-dependent mitophagy and protects against mitochondria-dependent apoptosis in acute respiratory distress syndrome. J Transl Med 2019; 99:819-829. [PMID: 30808930 DOI: 10.1038/s41374-019-0191-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 11/28/2018] [Accepted: 12/04/2018] [Indexed: 12/20/2022] Open
Abstract
Mitophagy removes dysfunctional mitochondria and is known to play an important role in the pathogenesis of several diseases; however, the role of mitophagy in acute respiratory distress syndrome (ARDS) remains poorly understood. While we have previously demonstrated that polydatin (PD) improves lipopolysaccharide (LPS)-induced ARDS, the specific mechanism remains unclear. In present study, we aimed to determine whether PD activates Parkin-dependent mitophagy to protect against LPS-induced mitochondria-dependent apoptosis and lung injury. To establish the ARDS model, C57BL/6 mice were intratracheally injected with LPS (5 mg/kg) in vivo and Beas-2B cells were exposured to 0.5 mM LPS in vitro. Our results indicate that PD facilitates Parkin translocation to mitochondria and promotes mitophagy in ARDS-challenged mice and LPS-treated Beas-2B cells. However, PD-induced mitophagy was suppressed in Parkin-/- mice and Parkin siRNA transfected cells, indicating that PD activates Parkin-dependent mitophagy. Furthermore, the protective effects of PD against LPS-induced mitochondria-dependent apoptosis and lung injury were suppressed when Parkin was depleted both in vivo and in vitro. The inhibition of mitophagy with mitophagy inhibitor mitochondrial division inhibitor-1 in vivo and silencing of autophagy-related gene 7 in vitro also blocked the protective effects mediated by PD. Our data suggest that Parkin-dependent mitophagy induced by PD provides protection against mitochondria-dependent apoptosis in ARDS.
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Exosomal miR-301 derived from mesenchymal stem cells protects myocardial infarction by inhibiting myocardial autophagy. Biochem Biophys Res Commun 2019; 514:323-328. [PMID: 31036323 DOI: 10.1016/j.bbrc.2019.04.138] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 04/18/2019] [Indexed: 11/23/2022]
Abstract
PURPOSE To investigate the protective effects of miR-301 in exosomes secreted by bone mesenchymal stem cells (BMSCs) on rats' myocardial infarction (MI). METHODS After isolation and culture, BMSCs were identified using flow cytometry. Then exosomes were then isolated. Rats MI models were established and they were divided into 4 groups: Sham group, Model group (injected with PBS), BMSC-Exos group (injected with exosomes secreted by BMSCs), BMSC-301-Exos group (injected with exosomes secreted by BMSCs transfected with miR-301 mimics). Cardiac function was assessed by cardiac echocardiography. Myocardial infarct area was measured by Masson trichrome staining mRNA and proteins expression were measured by qRT-PCR and western blot. Exosome morphology and myocardial cells autophagy were observed by transmission electron microscopy. RESULTS BMSCs were obtained. Rat MI models were successfully established. After rats were injected with exosomes secreted by BMSCs transfected with miR-301 mimics, MI tissues were found to have much higher miR-301 expression, LVEF, LVFS, P62 expression, and remarkably lower LVESD, LVEDD, MI area, LC3-II/LC3-I ratio and autophagosomes numbers compared with BMSC-Exos group (all P < 0.05). CONCLUSION miR-301 in exosomes secreted by BMSCs protected MI by inhibiting myocardial autophagy.
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Liu S, He Y, Shi J, Liu L, Ma H, He L, Guo Y. STAT1-avtiviated LINC00961 regulates myocardial infarction by the PI3K/AKT/GSK3β signaling pathway. J Cell Biochem 2019; 120:13226-13236. [PMID: 30887575 DOI: 10.1002/jcb.28596] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/02/2019] [Accepted: 02/14/2019] [Indexed: 02/05/2023]
Abstract
Myocardial infarction (MI) remains a severe cardiac disease because of its high incidence and mortality worldwide. A growing body of recent investigations have confirmed that LINC00961 acts as a tumor suppressor in diverse malignancies. However, the biological significance of LINC00961 and its molecular mechanism in MI are still elusive. Hypoxia is the leading cause of MI and induces myocardial injury. In this study, we found the upregulated expression of LINC00961 in cardiomyocytes H9c2 after hypoxia treatment. Knockdown of LINC00961 ameliorated hypoxia-induced cell injury by facilitating cell viability while repressing cell apoptosis. The significant increase of signal transducer and activator of transcription 1 (STAT1) expression and phosphorylation levels was observed in hypoxia-induced cells and proved to exacerbate hypoxia injury. In addition, STAT1 transcriptionally activated LINC00961 by binding to LINC00961 promoter. Furthermore, our results validated that suppressing LINC00961 contributed to the remarkable diminution in the phosphorylation levels of phosphoinositide 3-kinases (PI3K), AKT, and glycogen synthase kinase-3β (GSK3β). Inhibition of PI3K/AKT signaling or GSK3β pathway rescued the effects of LINC00961 knockdown on the hypoxia-induced injury of cardiomyocytes. Namely, we concluded that STAT1-avtiviated LINC00961 accelerated MI via the PI3K/AKT/GSK3β pathway, which may provide clues for the treatment of patients with MI.
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Affiliation(s)
- Shengzhong Liu
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China.,Cardiac Surgery Center, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, Sichuan, China
| | - Ying He
- Psychosomatic Medicine Center, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China
| | - Jun Shi
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Lulu Liu
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Hao Ma
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Li He
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yingqiang Guo
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
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