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Zununi Vahed S, Zuluaga Tamayo M, Rodriguez-Ruiz V, Thibaudeau O, Aboulhassanzadeh S, Abdolalizadeh J, Meddahi-Pellé A, Gueguen V, Barzegari A, Pavon-Djavid G. Functional Mechanisms of Dietary Crocin Protection in Cardiovascular Models under Oxidative Stress. Pharmaceutics 2024; 16:840. [PMID: 39065537 PMCID: PMC11280316 DOI: 10.3390/pharmaceutics16070840] [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: 04/22/2024] [Revised: 06/08/2024] [Accepted: 06/14/2024] [Indexed: 07/28/2024] Open
Abstract
It was previously reported that crocin, a water-soluble carotenoid isolated from the Crocus sativus L. (saffron), has protective effects on cardiac cells and may neutralize and even prevent the formation of excess number of free radicals; however, functional mechanisms of crocin activity have been poorly understood. In the present research, we aimed to study the functional mechanism of crocin in the heart exposed to oxidative stress. Accordingly, oxidative stress was modeled in vitro on human umbilical vein endothelial cells (HUVECs) and in vivo in mice using cellular stressors. The beneficial effects of crocin were investigated at cellular and molecular levels in HUVECs and mice hearts. Results indicated that oral administration of crocin could have protective effects on HUVECs. In addition, it protects cardiac cells and significantly inhibits inflammation via modulating molecular signaling pathways TLR4/PTEN/AKT/mTOR/NF-κB and microRNA (miR-21). Here we show that crocin not only acts as a direct free radical scavenger but also modifies the gene expression profiles of HUVECs and protects mice hearts with anti-inflammatory action under oxidative stress.
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Affiliation(s)
- Sepideh Zununi Vahed
- Kidney Research Center, Tabriz University of Medical Sciences, Tabriz 5165665811, Iran; (S.Z.V.); (S.A.)
| | - Marisol Zuluaga Tamayo
- Université Sorbonne Paris Nord, INSERM U1148, Laboratory for Vascular Translational Science, Nanotechnologies for Vascular Medicine and Imaging, 99 Av. Jean-Baptiste Clément, 93430 Villetaneuse, France (A.M.-P.); (V.G.); (A.B.)
| | - Violeta Rodriguez-Ruiz
- ERRMECe Laboratory, Biomaterials for Health Group, University of Cergy Pontoise, Maison Internationale de la Recherche, I MAT, 1 rue Descartes, 95031 Neuville sur Oise, France;
| | - Olivier Thibaudeau
- Plateau de Morphologie INSERM UMR 1152 Université Paris Diderot, Université Paris Cité, Bichat Hospital, AP-HP, 46 rue H. Huchard, 75018 Paris, France;
| | - Sobhan Aboulhassanzadeh
- Kidney Research Center, Tabriz University of Medical Sciences, Tabriz 5165665811, Iran; (S.Z.V.); (S.A.)
| | - Jalal Abdolalizadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz 5165665811, Iran;
| | - Anne Meddahi-Pellé
- Université Sorbonne Paris Nord, INSERM U1148, Laboratory for Vascular Translational Science, Nanotechnologies for Vascular Medicine and Imaging, 99 Av. Jean-Baptiste Clément, 93430 Villetaneuse, France (A.M.-P.); (V.G.); (A.B.)
| | - Virginie Gueguen
- Université Sorbonne Paris Nord, INSERM U1148, Laboratory for Vascular Translational Science, Nanotechnologies for Vascular Medicine and Imaging, 99 Av. Jean-Baptiste Clément, 93430 Villetaneuse, France (A.M.-P.); (V.G.); (A.B.)
| | - Abolfazl Barzegari
- Université Sorbonne Paris Nord, INSERM U1148, Laboratory for Vascular Translational Science, Nanotechnologies for Vascular Medicine and Imaging, 99 Av. Jean-Baptiste Clément, 93430 Villetaneuse, France (A.M.-P.); (V.G.); (A.B.)
| | - Graciela Pavon-Djavid
- Université Sorbonne Paris Nord, INSERM U1148, Laboratory for Vascular Translational Science, Nanotechnologies for Vascular Medicine and Imaging, 99 Av. Jean-Baptiste Clément, 93430 Villetaneuse, France (A.M.-P.); (V.G.); (A.B.)
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Hilgendorf I, Frantz S, Frangogiannis NG. Repair of the Infarcted Heart: Cellular Effectors, Molecular Mechanisms and Therapeutic Opportunities. Circ Res 2024; 134:1718-1751. [PMID: 38843294 PMCID: PMC11164543 DOI: 10.1161/circresaha.124.323658] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Accepted: 05/08/2024] [Indexed: 06/12/2024]
Abstract
The adult mammalian heart has limited endogenous regenerative capacity and heals through the activation of inflammatory and fibrogenic cascades that ultimately result in the formation of a scar. After infarction, massive cardiomyocyte death releases a broad range of damage-associated molecular patterns that initiate both myocardial and systemic inflammatory responses. TLRs (toll-like receptors) and NLRs (NOD-like receptors) recognize damage-associated molecular patterns (DAMPs) and transduce downstream proinflammatory signals, leading to upregulation of cytokines (such as interleukin-1, TNF-α [tumor necrosis factor-α], and interleukin-6) and chemokines (such as CCL2 [CC chemokine ligand 2]) and recruitment of neutrophils, monocytes, and lymphocytes. Expansion and diversification of cardiac macrophages in the infarcted heart play a major role in the clearance of the infarct from dead cells and the subsequent stimulation of reparative pathways. Efferocytosis triggers the induction and release of anti-inflammatory mediators that restrain the inflammatory reaction and set the stage for the activation of reparative fibroblasts and vascular cells. Growth factor-mediated pathways, neurohumoral cascades, and matricellular proteins deposited in the provisional matrix stimulate fibroblast activation and proliferation and myofibroblast conversion. Deposition of a well-organized collagen-based extracellular matrix network protects the heart from catastrophic rupture and attenuates ventricular dilation. Scar maturation requires stimulation of endogenous signals that inhibit fibroblast activity and prevent excessive fibrosis. Moreover, in the mature scar, infarct neovessels acquire a mural cell coat that contributes to the stabilization of the microvascular network. Excessive, prolonged, or dysregulated inflammatory or fibrogenic cascades accentuate adverse remodeling and dysfunction. Moreover, inflammatory leukocytes and fibroblasts can contribute to arrhythmogenesis. Inflammatory and fibrogenic pathways may be promising therapeutic targets to attenuate heart failure progression and inhibit arrhythmia generation in patients surviving myocardial infarction.
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Affiliation(s)
- Ingo Hilgendorf
- Department of Cardiology and Angiology, University Heart Center Freiburg-Bad Krozingen and Faculty of Medicine at the University of Freiburg, Freiburg, Germany
| | - Stefan Frantz
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Würzburg, Würzburg, Germany
| | - Nikolaos G Frangogiannis
- The Wilf Family Cardiovascular Research Institute, Department of Medicine (Cardiology), Albert Einstein College of Medicine, Bronx NY
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Olsen MB, Kong XY, Louwe MC, Lauritzen KH, Schanke Y, Kaasbøll OJ, Attramadal H, Øgaard J, Holm S, Aukrust P, Ryan L, Espevik T, Yurchenko M, Halvorsen B. SLAMF1-derived peptide exhibits cardio protection after permanent left anterior descending artery ligation in mice. Front Immunol 2024; 15:1383505. [PMID: 38686379 PMCID: PMC11056545 DOI: 10.3389/fimmu.2024.1383505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 03/25/2024] [Indexed: 05/02/2024] Open
Abstract
Acute myocardial infarction (MI) results in tissue damage to affected areas of the myocardium. The initial inflammatory response is the most damaging for residual cardiac function, while at later stages inflammation is a prerequisite for proper healing and scar formation. Balancing the extent and duration of inflammation during various stages after MI is thus pivotal for preserving cardiac function. Recently, a signaling lymphocytic activation molecule 1 (SLAMF1)-derived peptide (P7) was shown to reduce the secretion of inflammatory cytokines and protected against acute lipopolysaccharide-induced death in mice. In the present study, we experimentally induced MI by permanent ligation of the left anterior descending artery (LAD) in mice and explored the beneficial effect of immediately administering P7, with the aim of dampening the initial inflammatory phase without compromising the healing and remodeling phase. Blood samples taken 9 h post-LAD surgery and P7 administration dampened the secretion of inflammatory cytokines, but this dampening effect of P7 was diminished after 3 days. Echocardiography revealed less deterioration of cardiac contraction in mice receiving P7. In line with this, less myocardial damage was observed histologically in P7-treated mice. In conclusion, the administration of a SLAMF1-derived peptide (P7) immediately after induction of MI reduces the initial myocardial inflammation, reduces infarct expansion, and leads to less deterioration of cardiac contraction.
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Affiliation(s)
- Maria Belland Olsen
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Xiang Yi Kong
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Mieke C. Louwe
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Knut H. Lauritzen
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Ylva Schanke
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Ole Jørgen Kaasbøll
- Institute for Surgical Research, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Håvard Attramadal
- Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Institute for Surgical Research, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Jonas Øgaard
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Sverre Holm
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Pål Aukrust
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Liv Ryan
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Terje Espevik
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Infectious Diseases, Clinic of Medicine, St. Olav’s Hospital HF, Trondheim University Hospital, Trondheim, Norway
| | - Maria Yurchenko
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Infectious Diseases, Clinic of Medicine, St. Olav’s Hospital HF, Trondheim University Hospital, Trondheim, Norway
| | - Bente Halvorsen
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
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Hasan MM, Madhavan P, Ahmad Noruddin NA, Lau WK, Ahmed QU, Arya A, Zakaria ZA. Cardioprotective effects of arjunolic acid in LPS-stimulated H9C2 and C2C12 myotubes via the My88-dependent TLR4 signaling pathway. PHARMACEUTICAL BIOLOGY 2023; 61:1135-1151. [PMID: 37497554 PMCID: PMC10375937 DOI: 10.1080/13880209.2023.2230251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 05/21/2023] [Accepted: 06/22/2023] [Indexed: 07/28/2023]
Abstract
CONTEXT Arjunolic acid (AA) is a triterpenoid saponin found in Terminalia arjuna (Roxb.) Wight & Arn. (Combretaceae). It exerts cardiovascular protective effects as a phytomedicine. However, it is unclear how AA exerts the effects at the molecular level. OBJECTIVE This study investigates the cardioprotective effects of arjunolic acid (AA) via MyD88-dependant TLR4 downstream signaling marker expression. MATERIALS AND METHODS The MTT viability assay was used to assess the cytotoxicity of AA. LPS induced in vitro cardiovascular disease model was developed in H9C2 and C2C12 myotubes. The treatment groups were designed such as control (untreated), LPS control, positive control (LPS + pyrrolidine dithiocarbamate (PDTC)-25 µM), and treatment groups were co-treated with LPS and three concentrations of AA (50, 75, and 100 µM) for 24 h. The changes in the expression of TLR4 downstream signaling markers were evaluated through High Content Screening (HCS) and Western Blot (WB) analysis. RESULTS After 24 h of co-treatment, the expression of TLR4, MyD88, MAPK, JNK, and NF-κB markers were upregulated significantly (2-6 times) in the LPS-treated groups compared to the untreated control in both HCS and WB experiments. Evidently, the HCS analysis revealed that MyD88, NF-κB, p38, and JNK were significantly downregulated in the H9C2 myotube in the AA treated groups. In HCS, the expression of NF-κB was downregulated in C2C12. Additionally, TLR4 expression was downregulated in both H9C2 and C2C12 myotubes in the WB experiment. DISCUSSION AND CONCLUSIONS TLR4 marker expression in H9C2 and C2C12 myotubes was subsequently decreased by AA treatment, suggesting possible cardioprotective effects of AA.
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Affiliation(s)
- Md Mahmudul Hasan
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Malaysia
| | - Priya Madhavan
- School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Malaysia
| | - Nur Adelina Ahmad Noruddin
- National Institutes of Biotechnology Malaysia, Malaysian Institute of Pharmaceuticals and Nutraceuticals, Serdang, Malaysia
| | - Wai Kwan Lau
- National Institutes of Biotechnology Malaysia, Malaysian Institute of Pharmaceuticals and Nutraceuticals, Serdang, Malaysia
| | - Qamar Uddin Ahmed
- Drug Discovery and Synthetic Chemistry Research Group, Department of Pharmaceutical Chemistry, Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan, Malaysia
| | - Aditya Arya
- School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Malaysia
- National Institutes of Biotechnology Malaysia, Malaysian Institute of Pharmaceuticals and Nutraceuticals, Serdang, Malaysia
- School of Biosciences, Faculty of Science, The University of Melbourne, Melbourne, Australia
| | - Zainul Amiruddin Zakaria
- Borneo Research for Algesia, Inflammation and Neurodegeneration (BRAIN) Group, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu, Malaysia
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Wang Y, Liu Y, Li X, Yao L, Mbadhi M, Chen S, Lv Y, Bao X, Chen L, Chen S, Zhang J, Wu Y, Lv J, Shi L, Tang J. Vagus nerve stimulation-induced stromal cell-derived factor-l alpha participates in angiogenesis and repair of infarcted hearts. ESC Heart Fail 2023; 10:3311-3329. [PMID: 37641543 PMCID: PMC10682864 DOI: 10.1002/ehf2.14475] [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: 12/23/2022] [Revised: 06/02/2023] [Accepted: 07/02/2023] [Indexed: 08/31/2023] Open
Abstract
AIMS We aim to explore the role and mechanism of vagus nerve stimulation (VNS) in coronary endothelial cells and angiogenesis in infarcted hearts. METHODS AND RESULTS Seven days after rat myocardial infarction (MI) was prepared by ligation of the left anterior descending coronary artery, the left cervical vagus nerve was treated with electrical stimulation 1 h after intraperitoneal administration of the α7-nicotinic acetylcholine inhibitor mecamylamine or the mAChR inhibitor atropine or 3 days after local injection of Ad-shSDF-1α into the infarcted heart. Cardiac tissue acetylcholine (ACh) and serum ACh, tumour necrosis factor α (TNF-α), interleukin 1β (IL-1β) and interleukin 6 (IL-6) levels were detected by ELISA to determine whether VNS was successful. An inflammatory injury model in human coronary artery endothelial cells (HCAECs) was established by lipopolysaccharide and identified by evaluating TNF-α, IL-1β and IL-6 levels and tube formation. Immunohistochemistry staining was performed to evaluate CD31-positive vessel density and stromal cell-derived factor-l alpha (SDF-1α) expression in the MI heart in vivo and the expression and distribution of SDF-1α, C-X-C motif chemokine receptor 4 and CXCR7 in HCAECs in vitro. Western blotting was used to detect the levels of SDF-1α, V-akt murine thymoma viral oncogene homolog (AKT), phosphorylated AKT (pAKT), specificity protein 1 (Sp1) and phosphorylation of Sp1 in HCAECs. Left ventricular performance, including left ventricular systolic pressure, left ventricular end-diastolic pressure and rate of the rise and fall of ventricular pressure, should be evaluated 28 days after VNS treatment. VNS was successfully established for MI therapy with decreases in serum TNF-α, IL-1β and IL-6 levels and increases in cardiac tissue and serum ACh levels, leading to increased SDF-1α expression in coronary endothelial cells of MI hearts, triggering angiogenesis of MI hearts with increased CD31-positive vessel density, which was abolished by the m/nAChR inhibitors mecamylamine and atropine or knockdown of SDF-1α by shRNA. ACh promoted SDF-1α expression and its distribution along with the branch of the formed tube in HCAECs, resulting in an increase in the number of tubes formed in HCAECs. ACh increased the levels of pAKT and phosphorylation of Sp1 in HCAECs, resulting in inducing SDF-1α expression, and the specific effects could be abolished by mecamylamine, atropine, the PI3K/AKT blocker wortmannin or the Sp1 blocker mithramycin. Functionally, VNS improved left ventricular performance, which could be abolished by Ad-shSDF-1α. CONCLUSIONS VNS promoted angiogenesis to repair the infarcted heart by inducing SDF-1α expression and redistribution along new branches during angiogenesis, which was associated with the m/nAChR-AKT-Sp1 signalling pathway.
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Affiliation(s)
- Yan Wang
- Department of Physiology, Faculty of Basic Medical Sciences, Hubei Key Laboratory of Embryonic Stem Cell ResearchHubei University of MedicineShiyanPR China
- Department of Pathology, Renmin HospitalHubei University of MedicineShiyanPR China
| | - Yun Liu
- Department of Physiology, Faculty of Basic Medical Sciences, Hubei Key Laboratory of Embryonic Stem Cell ResearchHubei University of MedicineShiyanPR China
| | - Xing‐yuan Li
- Department of Physiology, Faculty of Basic Medical Sciences, Hubei Key Laboratory of Embryonic Stem Cell ResearchHubei University of MedicineShiyanPR China
| | - Lu‐yuan Yao
- Department of Physiology, Faculty of Basic Medical Sciences, Hubei Key Laboratory of Embryonic Stem Cell ResearchHubei University of MedicineShiyanPR China
- Department of Anesthesiology, Institute of Anesthesiology, Taihe HospitalHubei University of MedicineShiyanPR China
| | - MagdaleenaNaemi Mbadhi
- Department of Physiology, Faculty of Basic Medical Sciences, Hubei Key Laboratory of Embryonic Stem Cell ResearchHubei University of MedicineShiyanPR China
| | - Shao‐Juan Chen
- Department of Physiology, Faculty of Basic Medical Sciences, Hubei Key Laboratory of Embryonic Stem Cell ResearchHubei University of MedicineShiyanPR China
- Department of Stomatology, Taihe HospitalHubei University of MedicineShiyanPR China
| | - Yan‐xia Lv
- Department of Physiology, Faculty of Basic Medical Sciences, Hubei Key Laboratory of Embryonic Stem Cell ResearchHubei University of MedicineShiyanPR China
| | - Xin Bao
- Department of Physiology, Faculty of Basic Medical Sciences, Hubei Key Laboratory of Embryonic Stem Cell ResearchHubei University of MedicineShiyanPR China
- Experimental Medical Center, Guoyao‐Dong Feng HospitalHubei University of MedicineShiyanPR China
| | - Long Chen
- Experimental Medical Center, Guoyao‐Dong Feng HospitalHubei University of MedicineShiyanPR China
| | - Shi‐You Chen
- Department of SurgeryUniversity of MissouriColumbiaMissouriUSA
| | - Jing‐xuan Zhang
- Department of Physiology, Faculty of Basic Medical Sciences, Hubei Key Laboratory of Embryonic Stem Cell ResearchHubei University of MedicineShiyanPR China
- Institute of Basic Medical Sciences, Institute of BiomedicineHubei University of MedicineShiyanPR China
| | - Yan Wu
- Department of Physiology, Faculty of Basic Medical Sciences, Hubei Key Laboratory of Embryonic Stem Cell ResearchHubei University of MedicineShiyanPR China
- Institute of Basic Medical Sciences, Institute of BiomedicineHubei University of MedicineShiyanPR China
| | - Jing Lv
- Department of Anesthesiology, Institute of Anesthesiology, Taihe HospitalHubei University of MedicineShiyanPR China
| | - Liu‐liu Shi
- Department of Physiology, Faculty of Basic Medical Sciences, Hubei Key Laboratory of Embryonic Stem Cell ResearchHubei University of MedicineShiyanPR China
- Institute of Basic Medical Sciences, Institute of BiomedicineHubei University of MedicineShiyanPR China
| | - Jun‐ming Tang
- Department of Physiology, Faculty of Basic Medical Sciences, Hubei Key Laboratory of Embryonic Stem Cell ResearchHubei University of MedicineShiyanPR China
- Institute of Basic Medical Sciences, Institute of BiomedicineHubei University of MedicineShiyanPR China
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Chen X, Li W, Chang C. NR3C2 mediates oxidised low-density lipoprotein-induced human coronary endothelial cells dysfunction via modulation of NLRP3 inflammasome activation. Autoimmunity 2023; 56:2189135. [PMID: 36919662 DOI: 10.1080/08916934.2023.2189135] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Nuclear receptor subfamily 3 group C member 2 (NR3C2) has been revealed to affect the progression of multiple inflammatory diseases, while NR3C2's efficacy in coronary artery disease (CAD) remains largely unsolved. The study intended to elucidate the possible mechanisms of NR3C2 in oxidised low density lipoprotein (ox-LDL)-induced inflammation in human coronary endothelial cells (HCAECs) via regulating NACHT, LRR, and PYD domains-containing protein 3 (NLRP3). Patients who underwent CT angiography or coronary angiography for suspected CAD in our hospital were collected. The patients were divided into the CAD and the non-CAD (NCAD) groups. The expression of NR3C2 and NLRP3 in the peripheral blood of patients in both groups was examined by RT-qPCR. HCAECs were treated with ox-LDL to establish the model. The expression of NR3C2 and NLRP3 in ox-LDL-induced HCAECs was tested by RT-qPCR. The proliferation of HCAECs was measured using CCK-8 assay, the apoptosis of HCAECs was assessed by flow cytometry, and the levels of inflammation-related factors IL-1β and IL-18 in the cell supernatant were evaluated by ELISA. The molecular mechanisms of these factors in the proliferation and apoptosis of HCAECs and in the inflammatory response were further determined by knockdown and overexpression systems. The relationship between NR3C2 and NLRP3 was determined by ChIP and luciferase activity assays and bioinformatics analysis. NR3C2 and NLRP3 levels were elevated in the serum of CAD patients. The ox-LDL treatment elevated NR3C2 levels, evoked apoptosis and inflammation, and impeded cell viability in HCAECs, whereas downregulation of NR3C2 increased cell viability and reduced apoptosis and inflammatory response in ox-LDL-induced inflammation in HCAECs. NR3C2 levels were positively correlated with NLRP3, and NR3C2 elevated NLRP3 expression through transcription. Overexpression of NLRP3 counteracted the impacts of silencing NR3C2 on cell viability, cell apoptosis, and inflammatory response in ox-LDL-induced HCAECs. Our research stresses that NR3C2 transcription promotes NLRP3 to induce inflammatory responses in ox-LDL-induced HCAECs.
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Affiliation(s)
- Xiaofan Chen
- Department of Cardiovascular Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Weidong Li
- Department of Cardiovascular Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Chengdong Chang
- Department of Pathology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
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Perumal N, White B, Sanchez-Valdez F, Tarleton RL. cGAS-STING Pathway Activation during Trypanosoma cruzi Infection Leads to Tissue-Dependent Parasite Control. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:1123-1133. [PMID: 37603014 PMCID: PMC10783805 DOI: 10.4049/jimmunol.2300373] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 07/31/2023] [Indexed: 08/22/2023]
Abstract
Host cell invasion by Trypanosoma cruzi is a markedly silent process, with limited host transcriptional changes indicative of innate immune recognition, except for a modest type I IFN (IFN-I) response. In this study, we show that T. cruzi-induced IFN-β production was nearly abolished in primary murine cGAS-/- or stimulator of IFN genes (STING)-deficient (STINGGt) macrophages and fibroblasts. T. cruzi infection did not impact the ability of IFN-regulatory factor reporter macrophages to respond to classical cGAS-STING agonists, indicating that the limited IFN-β induction is not due to active parasite suppression. cGAS-/-, STINGGt, and IFN-α/β receptor-/- (IFNAR-/-) macrophages infected with T. cruzi yielded significantly higher numbers of amastigotes compared with wild-type macrophages; however, the impact of the STING pathway during infection in vivo is more complex. Despite an initial increase in parasite growth, STINGGt and IFNAR-/- mice ultimately had lower parasite burden in footpads as compared with wild-type mice, demonstrating a role for IFN-I expression in potentiating parasite growth at the infection site. STING pathway activation had little impact on parasite levels in the skeletal muscle; however, in the heart, cGAS-/- and STINGGt mice, but not IFNAR-/- mice, accumulated higher acute parasite loads, suggesting a protective role of STING sensing of T. cruzi in this organ that was independent of IFN-I. Together, these results demonstrate that host cGAS-STING senses T. cruzi infection, enhancing parasite growth at the site of entry, and contributes to acute-phase parasite restriction in the heart, a major site of tissue damage in chronic T. cruzi infection.
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Affiliation(s)
- Natasha Perumal
- Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA
- Department of Cellular Biology, University of Georgia, Athens, GA
| | - Brooke White
- Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA
| | | | - Rick L Tarleton
- Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA
- Department of Cellular Biology, University of Georgia, Athens, GA
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8
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Bahman F, AlSaeed H, Albeloushi S, Al-Mulla F, Ahmad R, Al-Rashed F. The role of TLR2 in exercise-induced immunomodulation in normal weight individuals. Sci Rep 2023; 13:10703. [PMID: 37400578 DOI: 10.1038/s41598-023-37811-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 06/28/2023] [Indexed: 07/05/2023] Open
Abstract
Toll-like receptors (TLRs) have been targeted for therapeutic drug development for several disorders, including cardiovascular diseases (CVD), and diabetes mellitus. Daily levels physical activity (PA) has been purported to influence the systemic circulation of cytokines, affecting the overall activation of TLRs and influencing the inflammatory milieu. Objective and self-reported daily PA was tracked in 69 normal-weight adults. Freedson's cut-offs categorized daily PA intensity into the 25th lowest, medium, and top percentiles. Monocytic TLR2 expression was quantified by flow cytometry in fresh whole blood. Cross-sectional associations between flow cytometry measured TLR2+ subsets and clinical biomarkers were evaluated. PA increased circulation of TLR2+ monocytes. TLR2 expression was adversely corelated with reduced diastolic blood pressure (DBP), triglyceride (TG), and matrix metallopeptidase 9 (MMP9) levels. However, regression analysis indicated that only TG levels were independently linked with TLR2+ subsets in circulation in active participants. Higher daily levels of physical activity are associated with improved cardiovascular blood markers and elevated circulatory monocytic TLR2+ subsets. These findings suggest that TLR2 may play a role in modulating CVD risk factors in individuals leading physically active lifestyles.
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Affiliation(s)
- Fatemah Bahman
- Immunology and Microbiology Department, Dasman Diabetes Institute, Al-Soor Street, P.O. Box 1180, 15462, Dasman, Kuwait
| | - Halemah AlSaeed
- Immunology and Microbiology Department, Dasman Diabetes Institute, Al-Soor Street, P.O. Box 1180, 15462, Dasman, Kuwait
| | - Shaima Albeloushi
- Immunology and Microbiology Department, Dasman Diabetes Institute, Al-Soor Street, P.O. Box 1180, 15462, Dasman, Kuwait
| | - Fahd Al-Mulla
- Genetics and Bioinformatics Department, Dasman Diabetes Institute, 15462, Dasman, Kuwait
| | - Rasheed Ahmad
- Immunology and Microbiology Department, Dasman Diabetes Institute, Al-Soor Street, P.O. Box 1180, 15462, Dasman, Kuwait
| | - Fatema Al-Rashed
- Immunology and Microbiology Department, Dasman Diabetes Institute, Al-Soor Street, P.O. Box 1180, 15462, Dasman, Kuwait.
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Sandstedt J, Vukusic K, Dellgren G, Jeppsson A, Mattsson Hultén L, Rotter Sopasakis V. Metagenomic sequencing of human cardiac tissue reveals Microbial RNA which correlates with Toll-like receptor-associated inflammation in patients with heart disease. Sci Rep 2023; 13:7884. [PMID: 37188775 DOI: 10.1038/s41598-023-35157-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 05/13/2023] [Indexed: 05/17/2023] Open
Abstract
Cardiovascular disease (CVD) is strongly associated with chronic low-grade inflammation, involving activated Toll-like receptors and their downstream cellular machinery. Moreover, CVD and other related inflammatory conditions are associated with infiltration of bacteria and viruses originating from distant body sites. Thus, in this study we aimed to map the presence of microbes in the myocardium of patients with heart disease that we previously found to display upregulated Toll-like receptor signaling. We performed metagenomics analysis of atrial cardiac tissue from patients undergoing coronary artery bypass grafting (CABG) or aortic valve replacement (AVR) and compared with atrial cardiac tissue from organ donors. A total of 119 species of bacteria and seven species of virus were detected in the cardiac tissue. RNA expression of five bacterial species were increased in the patient group of which L. kefiranofaciens correlated positively with cardiac Toll-like receptor-associated inflammation. Interaction network analysis revealed four main gene set clusters involving cell growth and proliferation, Notch signaling, G protein signaling and cell communication in association with L. kefiranofaciens RNA expression. Taken together, intracardial expression of L. kefiranofaciens RNA correlates with pro-inflammatory markers in the diseased cardiac atrium and may have an effect on specific signaling processes important for cell growth, proliferation and cell communication.
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Affiliation(s)
- Joakim Sandstedt
- Department of Clinical Chemistry, Sahlgrenska University Hospital, and Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Kristina Vukusic
- Department of Clinical Chemistry, Sahlgrenska University Hospital, and Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Göran Dellgren
- Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Anders Jeppsson
- Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Lillemor Mattsson Hultén
- Department of Clinical Chemistry, Sahlgrenska University Hospital, and Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Victoria Rotter Sopasakis
- Department of Clinical Chemistry, Sahlgrenska University Hospital, and Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
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Vaez H, Soraya H, Garjani A, Gholikhani T. Toll-Like Receptor 4 (TLR4) and AMPK Relevance in Cardiovascular Disease. Adv Pharm Bull 2023; 13:36-47. [PMID: 36721803 PMCID: PMC9871286 DOI: 10.34172/apb.2023.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 09/04/2021] [Accepted: 09/28/2021] [Indexed: 02/03/2023] Open
Abstract
Toll-like receptors (TLRs) are essential receptors of the innate immune system, playing a significant role in cardiovascular diseases. TLR4, with the highest expression among TLRs in the heart, has been investigated extensively for its critical role in different myocardial inflammatory conditions. Studies suggest that inhibition of TLR4 signaling pathways reduces inflammatory responses and even prevents additional injuries to the already damaged myocardium. Recent research results have led to a hypothesis that there may be a relation between TLR4 expression and 5' adenosine monophosphate-activated protein kinase (AMPK) signaling in various inflammatory conditions, including cardiovascular diseases. AMPK, as a cellular energy sensor, has been reported to show anti-inflammatory effects in various models of inflammatory diseases. AMPK, in addition to its physiological acts in the heart, plays an essential role in myocardial ischemia and hypoxia by activating various energy production pathways. Herein we will discuss the role of TLR4 and AMPK in cardiovascular diseases and a possible relation between TLRs and AMPK as a novel therapeutic target. In our opinion, AMPK-related TLR modulators will find application in treating different immune-mediated inflammatory disorders, especially inflammatory cardiac diseases, and present an option that will be widely used in clinical practice in the future.
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Affiliation(s)
- Haleh Vaez
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Corresponding Author: Haleh Vaez, Tel:+984133344798, Fax:+984133344798,
| | - Hamid Soraya
- Department of Pharmacology, Faculty of Pharmacy, Urmia University of Medical Sciences, Urmia, Iran
| | - Alireza Garjani
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Tooba Gholikhani
- Student Research Committee, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Nanora Pharmaceuticals Ltd, Tabriz, Iran
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Meng F, Guo B, Ma YQ, Li KW, Niu FJ. Puerarin: A review of its mechanisms of action and clinical studies in ophthalmology. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 107:154465. [PMID: 36166943 DOI: 10.1016/j.phymed.2022.154465] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 09/07/2022] [Accepted: 09/18/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Pueraria is the common name of the dried root of either Pueraria montana var. lobata (Willd.) Maesen & S.M.Almeida ex Sanjappa & Predeep (syn. Pueraria lobata (Willd.) Ohwi) or Pueraria montana var. thomsonii (Benth.) M.R.Almeida (syn. Pueraria thomsonii Benth.). Puerarin is a C-glucoside of the isoflavone daidzein extracted from Pueraria. It has been widely investigated to explore its therapeutic role in eye diseases and the molecular mechanisms. PURPOSE To collect the available literature from 2000 to 2022 on puerarin in the treatment of ocular diseases and suggest the future required directions to improve its medicinal value. METHOD The content of this review was obtained from databases such as Web of Science, PubMed, Google Scholar, China National Knowledge Infrastructure (CNKI), and the Wanfang Database. RESULTS The search yielded 428 articles, of which 159 articles were included after excluding duplicate articles and articles related to puerarin but less relevant to the topic of the review. In eleven articles, the bioavailability of puerarin was discussed. Despite puerarin possesses diverse biological activities, its bioavailability on its own is poor. There are 95 articles in which the therapeutic mechanisms of puerarin in ocular diseases was reported. Of these, 54 articles discussed the various signalling pathways related to occular diseases affected by puerarin. The other 41 articles discussed specific biological activities of puerarin. It plays a therapeutic role in ophthalmopathy via regulating nuclear factor kappa-B (NF-ĸB), mitogen-activated protein kinases (MAPKs), PI3K/AKT, JAK/STAT, protein kinase C (PKC) and other related pathways, affecting the expression of tumour necrosis factor α (TNF-α), interleukin-1β (IL-1β), intercellular adhesion molecule-1 (ICAM-1), monocyte chemoattractant protein-1 (MCP-1), superoxide dismutase (SOD), B-cell lymphoma-2 (Bcl-2) and other cytokines resulting in anti-inflammatory, antioxidant and anti-apoptotic effects. The clinical applications of puerarin in ophthalmology were discussed in 25 articles. Eleven articles discussed the toxicity of puerarin. The literature suggests that puerarin has a good curative effect and can be used safely in clinical practice. CONCLUSION This review has illustrated the diverse applications of puerarin acting on ocular diseases and suggested that puerarin can be used for treating diabetic retinopathy, retinal vascular occlusion, glaucoma and other ocular diseases in the clinic. Some ocular diseases are the result of the combined action of multiple factors, and the effect of puerarin on different factors needs to be further studied to improve a more complete mechanism of action of puerarin. In addition, it is necessary to increase the number of subjects in clinical trials and conduct clinical trials for other ocular diseases. The information presented here will guide future research studies.
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Affiliation(s)
- Fan Meng
- Shandong University of Traditional Chinese Medicine, Daxue Road 4655, Ji'nan 250355, China
| | - Bin Guo
- Shandong University of Traditional Chinese Medicine, Daxue Road 4655, Ji'nan 250355, China
| | - Yi-Qing Ma
- Shandong University of Traditional Chinese Medicine, Daxue Road 4655, Ji'nan 250355, China
| | - Kun-Wei Li
- Shandong University of Traditional Chinese Medicine, Daxue Road 4655, Ji'nan 250355, China.
| | - Feng-Ju Niu
- Shandong University of Traditional Chinese Medicine, Daxue Road 4655, Ji'nan 250355, China.
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Bhagat A, Shrestha P, Kleinerman ES. The Innate Immune System in Cardiovascular Diseases and Its Role in Doxorubicin-Induced Cardiotoxicity. Int J Mol Sci 2022; 23:ijms232314649. [PMID: 36498974 PMCID: PMC9739741 DOI: 10.3390/ijms232314649] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 11/25/2022] Open
Abstract
Innate immune cells are the early responders to infection and tissue damage. They play a critical role in the initiation and resolution of inflammation in response to insult as well as tissue repair. Following ischemic or non-ischemic cardiac injury, a strong inflammatory response plays a critical role in the removal of cell debris and tissue remodeling. However, persistent inflammation could be detrimental to the heart. Studies suggest that cardiac inflammation and tissue repair needs to be tightly regulated such that the timely resolution of the inflammation may prevent adverse cardiac damage. This involves the recognition of damage; activation and release of soluble mediators such as cytokines, chemokines, and proteases; and immune cells such as monocytes, macrophages, and neutrophils. This is important in the context of doxorubicin-induced cardiotoxicity as well. Doxorubicin (Dox) is an effective chemotherapy against multiple cancers but at the cost of cardiotoxicity. The innate immune system has emerged as a contributor to exacerbate the disease. In this review, we discuss the current understanding of the role of innate immunity in the pathogenesis of cardiovascular disease and dox-induced cardiotoxicity and provide potential therapeutic targets to alleviate the damage.
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Long G, Gong R, Wang Q, Zhang D, Huang C. Role of released mitochondrial DNA in acute lung injury. Front Immunol 2022; 13:973089. [PMID: 36059472 PMCID: PMC9433898 DOI: 10.3389/fimmu.2022.973089] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 08/01/2022] [Indexed: 12/02/2022] Open
Abstract
Acute lung injury(ALI)/acute respiratory distress syndrome(ARDS) is a form of acute-onset hypoxemic respiratory failure characterised by an acute, diffuse, inflammatory lung injury, and increased alveolar-capillary permeability, which is caused by a variety of pulmonary or nonpulmonary insults. Recently, aberrant mitochondria and mitochondrial DNA(mtDNA) level are associated with the development of ALI/ARDS, and plasma mtDNA level shows the potential to be a promising biomarker for clinical diagnosis and evaluation of lung injury severity. In mechanism, the mtDNA and its oxidised form, which are released from impaired mitochondria, play a crucial role in the inflammatory response and histopathological changes in the lung. In this review, we discuss mitochondrial outer membrane permeabilisation (MOMP), mitochondrial permeability transition pore(mPTP), extracellular vesicles (EVs), extracellular traps (ETs), and passive release as the principal mechanisms for the release of mitochondrial DNA into the cytoplasm and extracellular compartments respectively. Further, we explain how the released mtDNA and its oxidised form can induce inflammatory cytokine production and aggravate lung injury through the Toll-like receptor 9(TLR9) signalling, cytosolic cGAS-stimulator of interferon genes (STING) signalling (cGAS-STING) pathway, and inflammasomes activation. Additionally, we propose targeting mtDNA-mediated inflammatory pathways as a novel therapeutic approach for treating ALI/ARDS.
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Affiliation(s)
- Gangyu Long
- Wuhan Jinyintan Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Rui Gong
- The First Affiliated Hospital of University of Science and Technology of China (USTC), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Qian Wang
- Wuhan Jinyintan Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Dingyu Zhang
- Wuhan Jinyintan Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
- The First Affiliated Hospital of University of Science and Technology of China (USTC), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
- Hubei Clinical Research Center for Infectious Diseases, Wuhan, China
- Wuhan Research Center for Communicable Disease Diagnosis and Treatment, Chinese Academy of Medical Sciences, Wuhan, China
- Joint Laboratory of Infectious Diseases and Health, Wuhan Institute of Virology and Wuhan Jinyintan Hospital, Chinese Academy of Sciences, Wuhan, China
- *Correspondence: Dingyu Zhang, ; Chaolin Huang,
| | - Chaolin Huang
- Wuhan Jinyintan Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
- Hubei Clinical Research Center for Infectious Diseases, Wuhan, China
- Wuhan Research Center for Communicable Disease Diagnosis and Treatment, Chinese Academy of Medical Sciences, Wuhan, China
- Joint Laboratory of Infectious Diseases and Health, Wuhan Institute of Virology and Wuhan Jinyintan Hospital, Chinese Academy of Sciences, Wuhan, China
- *Correspondence: Dingyu Zhang, ; Chaolin Huang,
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14
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Li MJ, Yan SB, Dong H, Huang ZG, Li DM, Tang YL, Pan YF, Yang Z, Pan HB, Chen G. Clinical assessment and molecular mechanism of the upregulation of Toll-like receptor 2 (TLR2) in myocardial infarction. BMC Cardiovasc Disord 2022; 22:314. [PMID: 35840880 PMCID: PMC9287878 DOI: 10.1186/s12872-022-02754-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 07/08/2022] [Indexed: 09/13/2024] Open
Abstract
Objective The prevalence and mortality of cardiovascular diseases remain ranked first worldwide. Myocardial infarction (MI) is the central cause of death from cardiovascular diseases, seriously endangering human health. The clinical implication of toll-like receptor 2 (TLR2) remains contradictory, and its mechanism is still unknown. Hence, the objective of this study was to elucidate the clinical value and molecular mechanism of TLR2 in MI. Methods All high-throughput datasets and eligible literature were screened, and the expression levels of TLR2 were collected from the MI. The integrated expression level of TLR2 was displayed by calculating the standardized mean difference (SMD) and the area under the curve (AUC) of the summary receiver operating characteristic curve (sROC). The related TLR2 genes were sent for pathway analyses by gene ontology (GO), Kyoto encyclopedia of genes and genome (KEGG), and disease ontology (DO). Single-cell RNA-seq was applied to ascertain the molecular mechanism of TLR2 in MI. Results Nine microarrays and four reported data were available to calculate the comprehensive expression level of TLR2 in MI, including 325 cases of MI and 306 cases of controls. The SMD was 2.55 (95% CI = 1.35–3.75), and the AUC was 0.76 (95% CI = 0.72–0.79), indicating the upregulation of TLR2 in MI. The related TLR2 genes were primarily enriched in the pathways of atherosclerosis, arteriosclerotic cardiovascular disease, and arteriosclerosis, suggesting the clinical role of TLR2 in the progression of MI. Afterward, TLR2 was upregulated in myeloid cells in MI. Conclusions TLR2 may have a crucial role in progressing from coronary atherosclerosis to MI. The upregulation of TLR2 may have a favorable screening value for MI. Supplementary Information The online version contains supplementary material available at 10.1186/s12872-022-02754-y.
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Affiliation(s)
- Ming-Jie Li
- Department of Pathology/Forensic Medicine, The First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, 530021, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Shi-Bai Yan
- Department of Pathology/Forensic Medicine, The First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, 530021, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Hao Dong
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, 530021, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Zhi-Guang Huang
- Department of Pathology/Forensic Medicine, The First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, 530021, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Dong-Ming Li
- Department of Pathology/Forensic Medicine, The First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, 530021, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Yu-Lu Tang
- Department of Pathology/Forensic Medicine, The First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, 530021, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Yan-Fang Pan
- Department of Pathology, Hospital of Guangxi Liugang Medical Co., LTD./Guangxi Liuzhou Dingshun Forensic Expert Institute, No. 9, Queershan Rd, Liuzhou, 545002, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Zhen Yang
- Department of Gerontology, NO. 923 Hospital of Chinese People's Liberation Army, No. 1 Tangcheng Rd, Nanning, 530021, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Hong-Bo Pan
- Department of Pathology/Forensic Medicine, The First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, 530021, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Gang Chen
- Department of Pathology/Forensic Medicine, The First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, 530021, Guangxi Zhuang Autonomous Region, People's Republic of China.
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Mitochondrial DNA Is a Vital Driving Force in Ischemia-Reperfusion Injury in Cardiovascular Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:6235747. [PMID: 35620580 PMCID: PMC9129988 DOI: 10.1155/2022/6235747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 05/06/2022] [Indexed: 11/28/2022]
Abstract
According to the latest Global Burden of Disease Study, cardiovascular disease (CVD) is the leading cause of death, and ischemic heart disease and stroke are the cause of death in approximately half of CVD patients. In CVD, mitochondrial dysfunction following ischemia-reperfusion (I/R) injury results in heart failure. The proper functioning of oxidative phosphorylation (OXPHOS) and the mitochondrial life cycle in cardiac mitochondria are closely related to mitochondrial DNA (mtDNA). Following myocardial I/R injury, mitochondria activate multiple repair and clearance mechanisms to repair damaged mtDNA. When these repair mechanisms are insufficient to restore the structure and function of mtDNA, irreversible mtDNA damage occurs, leading to mtDNA mutations. Since mtDNA mutations aggravate OXPHOS dysfunction and affect mitophagy, mtDNA mutation accumulation leads to leakage of mtDNA and proteins outside the mitochondria, inducing an innate immune response, aggravating cardiovascular injury, and leading to the need for external interventions to stop or slow the disease course. On the other hand, mtDNA released into the circulation after cardiac injury can serve as a biomarker for CVD diagnosis and prognosis. This article reviews the pathogenic basis and related research findings of mtDNA oxidative damage and mtDNA leak-triggered innate immune response associated with I/R injury in CVD and summarizes therapeutic options that target mtDNA.
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Zhai Y, Ao L, Yao Q, The E, Fullerton DA, Meng X. Elevated Expression of TLR2 in Aging Hearts Exacerbates Cardiac Inflammatory Response and Adverse Remodeling Following Ischemia and Reperfusion Injury. Front Immunol 2022; 13:891570. [PMID: 35493479 PMCID: PMC9046986 DOI: 10.3389/fimmu.2022.891570] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 03/22/2022] [Indexed: 01/04/2023] Open
Abstract
This study tested the hypothesis that Toll-like receptor 2 (TLR2) augments the inflammatory responses and adverse remodeling in aging hearts to exacerbate myocardial injury and cardiac dysfunction.MethodsOld (20-22 months old) and adult (4-6 months old) mice of C57BL/6 wild-type and TLR2 knockout (KO) were subjected to coronary artery ligation (30 minutes) and reperfusion (3 or 14 days). Left ventricle function was assessed using a pressure-volume microcatheter. Cardiac infarct size was determined by histology. Levels of vascular cell adhesion molecule-1 (VCAM-1), intercellular adhesion molecule-1 (ICAM-1), matrix metalloproteinase 9 (MMP 9), and collagen I in non-ischemic myocardium were assessed by immunoblotting. Monocyte chemoattractant protein-1 (MCP-1), keratinocyte chemoattractant (KC), and interleukin-6 (IL-6) levels in ischemic and non-ischemic myocardium were measured by enzyme-linked immunosorbent assay (ELISA). TLR2 expression in the myocardium of untreated wild type mice was also measured by immunoblotting.ResultsHigher levels of MCP-1, KC, IL-6 were induced in both ischemic and non-ischemic myocardium of old wild type mice at day 3 and 14 following ischemia/reperfusion (I/R) than those of adult wild type mice. The hyper-inflammatory responses to I/R in aging hearts were associated with elevated levels of myocardial TLR2. TLR2 KO markedly down-regulated the expression of MCP-1, KC, IL-6, ICAM-1 and VCAM-1 in aging hearts at day 3 and 14 following I/R. The down-regulated inflammatory activity in aging TLR2 KO hearts was associated with attenuated production of MMP 9 and collagen I at day 14 and resulted in reduced infarct size and improved cardiac function.ConclusionElevated expression of myocardial TLR2 contributes to the mechanism by which aging exacerbates the inflammatory responses, adverse remodeling and cardiac dysfunction following myocardial I/R in aging.
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The Protective Effect of Anethole against Renal Ischemia/Reperfusion: The Role of the TLR2,4/MYD88/NFκB Pathway. Antioxidants (Basel) 2022; 11:antiox11030535. [PMID: 35326185 PMCID: PMC8944622 DOI: 10.3390/antiox11030535] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/07/2022] [Accepted: 03/09/2022] [Indexed: 01/04/2023] Open
Abstract
Background: Anethole is the principle essential oil component of anise and fennel. Renal ischemia/reperfusion (RIR) is one of the utmost imperative reasons for acute kidney injury and often associated with high mortality rate. The aim of this study is to investigate the protective effect of anethole on RIR status, exploring the involved mechanisms. Methods: RIR was accomplished by bilateral renal pedicle clamping for 45 min, after which the clamps were removed to achieve the reperfusion phase. Rats were randomized into five groups; Sham, Sham + anethole, RIR, and finally RIR + anethole (125 mg/kg or 250 mg/kg) groups. Animals were given anethole (in specified groups in doses) for 14 days before RIR. Results: RIR-experienced animals developed renal injury evidenced by diminished renal function and histopathological alteration. RIR induced severe oxidative, inflammatory, and apoptotic status within renal tissue. Pre-RIR management with anethole enhanced renal morphology and improved renal function. Anethole amplified GSH content and SOD, CAT, and GPx activities and lowered MDA. Anethole reduced gene and protein expression levels of HMGB1, TLR2, TLR4, MYD88, and NFκB. Anethole distinctly dropped TNF-α, IFN-γ, and MCP-1 levels, increased IL-10, and diminished caspase 3 and 9, reflecting its anti-inflammatory and anti-apoptotic actions. Conclusion: Anethole displayed anti-inflammatory, anti-oxidant, and anti-apoptotic actions against RIR-induced injury. Anethole exhibited renal protective actions, which could be through inhibiting the HMGB1/TLR2, 4/MYD88/NFκB pathway. These results could suggest anethole as a protective agent against RIR.
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Own J, Ulevitch R, McKay D. CD14 blockade to prevent ischemic injury to donor organs. Transpl Immunol 2022; 72:101580. [DOI: 10.1016/j.trim.2022.101580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 03/07/2022] [Accepted: 03/07/2022] [Indexed: 11/26/2022]
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Sandstedt J, Vukusic K, Rekabdar E, Dellgren G, Jeppsson A, Mattsson Hultén L, Rotter Sopasakis V. Markedly reduced myocardial expression of γ-protocadherins and long non-coding RNAs in patients with heart disease. Int J Cardiol 2021; 344:149-159. [PMID: 34592247 DOI: 10.1016/j.ijcard.2021.09.046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 09/16/2021] [Accepted: 09/22/2021] [Indexed: 01/04/2023]
Abstract
BACKGROUND Adverse cardiac remodeling and tissue damage following heart disease is strongly associated with chronic low grade inflammation. The mechanisms underlying persisting inflammatory signals are not fully understood, but may involve defective and/or non-responsive transcriptional and post-transcriptional regulatory mechanisms. In the current study, we aimed to identify novel mediators and pathways involved in processes associated with inflammation in the development and maintenance of cardiac disease. METHODS AND RESULTS We performed RNA sequencing analysis of cardiac tissue from patients undergoing coronary artery bypass grafting (CABG) or aortic valve replacement (AVR) and compared with control tissue from multi-organ donors. Our results confirmed previous findings of a marked upregulated inflammatory state, but more importantly, we found pronounced reduction of non-protein coding genes, particularly long non-coding RNAs (lncRNA), including several lncRNAs known to be associated with inflammation and/or cardiovascular disease. In addition, Gene Set Enrichment Analysis revealed markedly downregulated microRNA pathways, resulting in aberrant expression of other genes, particularly γ-protocadherins. CONCLUSIONS Our data suggest that aberrant expression of non-coding gene regulators comprise crucial keys in the progression of heart disease, and may be pivotal for chronic low grade inflammation associated with cardiac dysfunction. By unmasking atypical γ-protocadherin expression as a prospective genetic biomarker of myocardial dysfunction, our study provides new insight into the complex molecular framework of heart disease. Creating new approaches to modify non-coding gene regulators, such as those identified in the current study, may define novel strategies to shift γ-protocadherin expression, thereby normalizing part of the molecular architecture associated with heart disease.
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Affiliation(s)
- Joakim Sandstedt
- Department of Clinical Chemistry, Sahlgrenska University Hospital and Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Kristina Vukusic
- Department of Clinical Chemistry, Sahlgrenska University Hospital and Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Elham Rekabdar
- Genomics Core Facility, Sahlgrenska Academy, University of Gothenburg, SE-405 30 Gothenburg, Sweden
| | - Göran Dellgren
- Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, SE-413 45 Gothenburg, Sweden; Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Anders Jeppsson
- Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, SE-413 45 Gothenburg, Sweden; Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Lillemor Mattsson Hultén
- Department of Clinical Chemistry, Sahlgrenska University Hospital and Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden; Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Victoria Rotter Sopasakis
- Department of Clinical Chemistry, Sahlgrenska University Hospital and Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden.
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Chen F, Zou L, Williams B, Chao W. Targeting Toll-Like Receptors in Sepsis: From Bench to Clinical Trials. Antioxid Redox Signal 2021; 35:1324-1339. [PMID: 33588628 PMCID: PMC8817700 DOI: 10.1089/ars.2021.0005] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Significance: Sepsis is a critical clinical syndrome with life-threatening organ dysfunction induced by a dysregulated host response to infection. Despite decades of intensive research, sepsis remains a leading cause of in-hospital mortality with few specific treatments. Recent Advances: Toll-like receptors (TLRs) are a part of the innate immune system and play an important role in host defense against invading pathogens such as bacteria, virus, and fungi. Using a combination of genetically modified animal models and pharmacological agents, numerous preclinical studies during the past two decades have demonstrated that dysregulated TLR signaling may contribute to sepsis pathogenesis. However, many clinical trials targeting inflammation and innate immunity such as TLR4 have yielded mixed results. Critical Issues: Here we review various TLRs and the specific molecules these TLRs sense-both the pathogen-associated and host-derived stress molecules, and their converging signaling pathways. We critically analyze preclinical investigations into the role of TLRs in animal sepsis, the complexity of targeting TLRs for sepsis intervention, and the disappointing clinical trials of the TLR4 antagonist eritoran. Future Directions: Future sepsis treatments will depend on better understanding the complex biological mechanisms of sepsis pathogenesis, the high heterogeneity of septic humans as defined by clinical presentations and unique immunological biomarkers, and improved stratifications for targeted interventions.
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Affiliation(s)
- Fengqian Chen
- Translational Research Program, Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Lin Zou
- Translational Research Program, Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Brittney Williams
- Translational Research Program, Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Wei Chao
- Translational Research Program, Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, Maryland, USA
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21
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Wang R, Wang N, Han Y, Xu J, Xu Z. Dulaglutide Alleviates LPS-Induced Injury in Cardiomyocytes. ACS OMEGA 2021; 6:8271-8278. [PMID: 33817486 PMCID: PMC8015136 DOI: 10.1021/acsomega.0c06326] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 03/03/2021] [Indexed: 05/13/2023]
Abstract
BACKGROUND AND PURPOSE Sepsis is a severe infection-induced disease with multiple organ failure, and sepsis-induced cardiomyopathy is a fatal condition. Inflammatory response and oxidative stress are reported to be involved in the development of sepsis-induced cardiomyopathy. Dulaglutide is a novel antidiabetic agent that is currently reported to exert an anti-inflammatory effect. The present study aims to explore the potential protective property of dulaglutide on lipopolysaccharide (LPS)-induced injury on cardiomyocytes. METHODS LPS was used to induce an in vitro injury model on cardiomyocytes. The mitochondrial reactive oxygen species (ROS) level was detected using MitoSOX red, and reduced glutathione (GSH) was measured to evaluate the status of oxidative stress in H9c2 myocardial cells. The expressions of NADPH oxidase-1 (NOX-1) and inducible nitric oxidesynthase (iNOS) were determined using real-time PCR and western blot analysis. Real-time PCR and enzyme-linked immunosorbent assay (ELISA) were both used to detect the expressions and concentrations of tumor necrosis factor-α, interleukin-1β, interleukin-17, matrix metalloproteinase-2, and matrix metalloproteinase-9 in H9c2 myocardial cells, respectively. The production of nitric oxide (NO) was measured using the Griess reagent. The levels of creatine kinase isoenzyme-MB (CK-MB) and cardiac troponin I (cTnI) were detected using ELISA. Western blot was utilized to determine the expressions of toll-like receptor 4 (TLR4), myeloid differentiation factor 88 (MyD88), and p-NF-κB p65 in H9c2 myocardial cells in the nucleus. RESULTS First, dulaglutide ameliorated LPS-induced oxidative stress by suppressing the production of mitochondrial ROS and elevating the level of reduced GSH, as well as downregulating NOX-1. Second, the LPS-induced cardiomyocyte injury was alleviated by dulaglutide through downregulating CK-MB and cTnI, accompanied by inhibiting iNOS expression and NO production. Lastly, the production of inflammatory factors and upregulation of MMPs induced by LPS were both significantly reversed by dulaglutide through suppressing the TLR4/Myd88/NF-κB signaling pathway. CONCLUSIONS Dulaglutide alleviated LPS-induced injury in cardiomyocytes by inhibiting inflammation and oxidative stress.
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Affiliation(s)
- Rijun Wang
- Department of Cardiology, Cangzhou Central Hospital Affiliated of Tianjin Medical
University, Cangzhou, Hebei 061014, China
- Department of Cardiology, Shanxi Cardiovascular
Hospital, Taiyuan, Shanxi 030024, China
| | - Ning Wang
- Department of Cardiology, Shanxi Cardiovascular
Hospital, Taiyuan, Shanxi 030024, China
| | - Yuping Han
- Department of Cornea, Shanxi Ophthalmic
Hospital, Taiyuan, Shanxi 030002, China
| | - Jiyao Xu
- Department of Cardiology, Shanxi Cardiovascular
Hospital, Taiyuan, Shanxi 030024, China
| | - Zesheng Xu
- Department of Cardiology, Cangzhou Central Hospital Affiliated of Tianjin Medical
University, Cangzhou, Hebei 061014, China
- . Phone/Fax: +86-0317-2075013
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22
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Chen E, Chen C, Niu Z, Gan L, Wang Q, Li M, Cai X, Gao R, Katakam S, Chen H, Zhang S, Zhou R, Cheng X, Qiu Y, Yu H, Zhu T, Liu J. Poly(I:C) preconditioning protects the heart against myocardial ischemia/reperfusion injury through TLR3/PI3K/Akt-dependent pathway. Signal Transduct Target Ther 2020; 5:216. [PMID: 33154351 PMCID: PMC7644758 DOI: 10.1038/s41392-020-00257-w] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 06/28/2020] [Accepted: 07/20/2020] [Indexed: 02/05/2023] Open
Abstract
Emerging evidence suggests that Toll-like receptors (TLRs) ligands pretreatment may play a vital role in the progress of myocardial ischemia/reperfusion (I/R) injury. As the ligand of TLR3, polyinosinic-polycytidylic acid (poly(I:C)), a synthetic double-stranded RNA, whether its preconditioning can exhibit a cardioprotective phenotype remains unknown. Here, we report the protective effect of poly(I:C) pretreatment in acute myocardial I/R injury by activating TLR3/PI3K/Akt signaling pathway. Poly(I:C) pretreatment leads to a significant reduction of infarct size, improvement of cardiac function, and downregulation of inflammatory cytokines and apoptotic molecules compared with controls. Subsequently, our data demonstrate that phosphorylation of TLR3 tyrosine residue and its interaction with PI3K is enhanced, and protein levels of phospho-PI3K and phospho-Akt are both increased after poly(I:C) pretreatment, while knock out of TLR3 suppresses the cardioprotection of poly(I:C) preconditioning through a decreased activation of PI3K/Akt signaling. Moreover, inhibition of p85 PI3K by the administration of LY294002 in vivo and knockdown of Akt by siRNA in vitro significantly abolish poly(I:C) preconditioning-induced cardioprotective effect. In conclusion, our results reveal that poly(I:C) preconditioning exhibits essential protection in myocardial I/R injury via its modulation of TLR3, and the downstream PI3K/Akt signaling, which may provide a potential pharmacologic target for perioperative cardioprotection.
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Affiliation(s)
- Erya Chen
- Department of Anesthesiology and Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Chan Chen
- Department of Anesthesiology and Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
| | - Zhendong Niu
- Department of Emergency Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Lu Gan
- Department of Anesthesiology and Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Qiao Wang
- Department of Anesthesiology and Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Ming Li
- Department of Anesthesiology and Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - XingWei Cai
- Department of Anesthesiology and Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Rui Gao
- Department of Anesthesiology and Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Sruthi Katakam
- Institute of Cell Engineering, Department of Neurology, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Hai Chen
- Department of Anesthesiology and Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Shu Zhang
- Department of Emergency Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Ronghua Zhou
- Department of Anesthesiology and Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xu Cheng
- Department of Anesthesiology and Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yanhua Qiu
- Department of Anesthesiology and Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Hai Yu
- Department of Anesthesiology and Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Tao Zhu
- Department of Anesthesiology and Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
| | - Jin Liu
- Department of Anesthesiology and Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
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Miao Y, Ding Z, Zou Z, Yang Y, Yang M, Zhang X, Li Z, Zhou L, Zhang L, Zhang X, Du D, Jiang F, Zhou P. Inhibition of MyD88 by a novel inhibitor reverses two-thirds of the infarct area in myocardial ischemia and reperfusion injury. Am J Transl Res 2020; 12:5151-5169. [PMID: 33042411 PMCID: PMC7540094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 07/15/2020] [Indexed: 06/11/2023]
Abstract
Cardiomyocytes, macrophages, and fibroblasts play important roles in inflammation and repair during myocardial ischemia/reperfusion injury (MIRI). Myeloid differentiation primary response 88 (MyD88) is upregulated in immunocytes, cardiomyocytes, and fibroblasts during MIRI. MyD88 induces the secretion of proinflammatory cytokines, including interleukin (IL)-1β, IL-6, and tumor necrosis factor alpha (TNF-α), while fibroblasts are recruited and activated to mediate cardiac remodeling. The aim of this study was to assess the anti-MIRI effect and mode of action of the novel MyD88 inhibitor TJ-M2010-5. We synthesized TJ-M2010-5 and identified its target by co-immunoprecipitation, after which we established a murine MIRI model and tested the protective effect of TJ-M2010-5 by immunohistochemistry, flow cytometry, real-time PCR, and western blotting. Neonatal rat cardiomyocytes subjected to anoxia/reoxygenation were also isolated and their supernatants used to stimulate cardiac macrophagocytes and fibroblasts in vitro. MyD88 was found upregulated during the early and late phases after MIRI. The MyD88 inhibitor considerably improved cardiac function, reduced cardiomyocyte apoptosis, reduced IL-1β, IL-6, and TNF-α secretion, and inhibited CD80+CD86+MHCII+ macrophage and fibroblast migration. Moreover, TJ-M2010-5 markedly inhibited Toll-like receptor/MyD88 signaling in vivo and in vitro. Thus, our findings highlight TJ-M2010-5 as a potential therapeutic agent for MIRI treatment.
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Affiliation(s)
- Yan Miao
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan, China
- Key Laboratory of Organ Transplantation, Ministry of Education, NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical SciencesWuhan, China
| | - Zuochuan Ding
- Department of General Surgery, The First Affiliated Hospital of Nanchang UniversityNanchang, China
| | - Zhimiao Zou
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan, China
- Key Laboratory of Organ Transplantation, Ministry of Education, NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical SciencesWuhan, China
| | - Yang Yang
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan, China
- Key Laboratory of Organ Transplantation, Ministry of Education, NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical SciencesWuhan, China
| | - Min Yang
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan, China
| | - Xiaoqian Zhang
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan, China
| | - Zeyang Li
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan, China
- Key Laboratory of Organ Transplantation, Ministry of Education, NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical SciencesWuhan, China
| | - Liang Zhou
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan, China
- Key Laboratory of Organ Transplantation, Ministry of Education, NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical SciencesWuhan, China
| | - Limin Zhang
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan, China
- Key Laboratory of Organ Transplantation, Ministry of Education, NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical SciencesWuhan, China
| | - Xue Zhang
- Department of Breast Surgery, Renmin Hospital of Wuhan University, Wuhan UniversityWuhan, China
| | - Dunfeng Du
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan, China
- Key Laboratory of Organ Transplantation, Ministry of Education, NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical SciencesWuhan, China
| | - Fengchao Jiang
- Academy of Pharmacy, Tongji Medical College, Huazhong University of Science and TechnologyWuhan, China
| | - Ping Zhou
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan, China
- Key Laboratory of Organ Transplantation, Ministry of Education, NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical SciencesWuhan, China
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Baerlocher GM, Rusbuldt J, Bussolari J, Huang F. Myelosuppression in Patients Treated with the Telomerase Inhibitor Imetelstat Is Not Mediated through Activation of Toll-Like Receptors. Int J Mol Sci 2020; 21:ijms21186550. [PMID: 32911605 PMCID: PMC7555816 DOI: 10.3390/ijms21186550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/02/2020] [Accepted: 09/03/2020] [Indexed: 01/04/2023] Open
Abstract
Imetelstat sodium (GRN163L; hereafter, imetelstat) is a first-in-class telomerase inhibitor that has demonstrated activity in patients with myeloproliferative neoplasms (MPNs). Treatment with imetelstat has been associated with thrombocytopenia and other hematologic adverse effects that were manageable and reversible. Toll-like receptors (TLRs) are proteins that recognize pathogen-associated molecular patterns and stimulate innate immune and pro-apoptotic responses. Because imetelstat is an oligonucleotide, and some oligonucleotides can activate TLRs, we conducted an in vitro study to rule out the possibility of imetelstat-associated thrombocytopenia by off-target effects through activation of TLRs. We used HEK293 cell lines stably co-expressing a human TLR gene and an NFκB-inducible reporter to investigate whether imetelstat can activate TLR signaling. We treated the cells with imetelstat or control oligonucleotides for 20 h, and used absorbance of the culture media to calculate the reporter activity. Treatment with imetelstat within or beyond the clinically relevant concentrations had no stimulatory effect on TLR2, TLR3, TLR4, TLR5, TLR7, or TLR9. This result was not surprising since the structure of imetelstat does not meet the reported minimal structural requirements for TLR9 activation. Furthermore, imetelstat treatment of the MPN cell line HEL did not impact the expression of TLR signaling pathway target genes that are commonly induced by activation of different TLRs, whereas it significantly reduced its target gene hTERT, human telomerase reverse transcriptase, in a dose- and time-dependent manner. Hence, cytopenias, especially thrombocytopenia observed in some patients treated with imetelstat, are not mediated by off-target interactions with TLRs.
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Affiliation(s)
- Gabriela M. Baerlocher
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland
- Laboratory for Hematopoiesis and Molecular Genetics, Department of BioMedical Research (DBMR), University of Bern, 3010 Bern, Switzerland
- Correspondence: ; Tel.: +41-(0)31-632-33-06; Fax: +41-(0)31-632-58-29
| | - Joshua Rusbuldt
- Janssen Research & Development, LLC, Spring House, PA 19477, USA; (J.R.); (J.B.)
| | - Jacqueline Bussolari
- Janssen Research & Development, LLC, Spring House, PA 19477, USA; (J.R.); (J.B.)
| | - Fei Huang
- Geron Corporation, Parsippany, NJ 07054, USA;
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25
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Jing R, Hu ZK, Lin F, He S, Zhang SS, Ge WY, Dai HJ, Du XK, Lin JY, Pan LH. Mitophagy-Mediated mtDNA Release Aggravates Stretching-Induced Inflammation and Lung Epithelial Cell Injury via the TLR9/MyD88/NF-κB Pathway. Front Cell Dev Biol 2020; 8:819. [PMID: 33015037 PMCID: PMC7504878 DOI: 10.3389/fcell.2020.00819] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 08/03/2020] [Indexed: 01/04/2023] Open
Abstract
Background In animal models of ventilation-induced lung injury, mitophagy triggers mitochondria damage and the release of mitochondrial (mt) DNA, which activates inflammation. However, the mechanism of this process is unclear. Methods A model of cyclic stretching (CS)-induced lung epithelial cell injury was established. The genetic intervention of phosphatase and tensin homolog-induced kinase 1 (PINK1) expression via lentivirus transfection was used to identify the relationship between PINK1-mediated mitophagy and mtDNA release in stretching-induced inflammatory response and injury. Pharmacological inhabitation of Toll-like receptor 9 (TLR9) and myeloid differentiation factor 88 (MyD88) expression was performed via their related inhibitors, while pre-treatment of exogenous mtDNA was used to verify the role of mtDNA in stretching-induced inflammatory response and injury. Results Using a cell culture model of CS, we found that knocking down PINK1 in lung epithelial cells reduced mitophagy activation and mtDNA release, leading to milder inflammatory response and injury; conversely, up-regulating PINK1 exacerbated stretching-induced inflammation and injury, and similar effects were observed by upregulating TLR9 to induce expression of MyD88 and nuclear factor-κB (NF-κB)/p65. Down-regulating MyD88 protected lung epithelial cells from stretching injury and decreased NF-κB/p65 expression. Conclusion These findings suggest that PINK1-dependent mitophagy and associated TLR9 activation is indeed a major factor in stretch-induced cell injury via a mechanism in which released mtDNA activates TLR9 and thereby the MyD88/NF-κB pathway. Inhibiting this process may be a therapeutic approach to prevent inflammation and cell injury in patients on mechanical ventilation.
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Affiliation(s)
- Ren Jing
- Department of Anesthesiology, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China.,The Laboratory of Perioperative Medicine Research Center, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China
| | - Zhao-Kun Hu
- Department of Anesthesiology, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China.,The Laboratory of Perioperative Medicine Research Center, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China
| | - Fei Lin
- Department of Anesthesiology, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China.,The Laboratory of Perioperative Medicine Research Center, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China
| | - Sheng He
- Department of Anesthesiology, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China.,The Laboratory of Perioperative Medicine Research Center, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China
| | - Sui-Sui Zhang
- Department of Anesthesiology, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China.,The Laboratory of Perioperative Medicine Research Center, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China
| | - Wan-Yun Ge
- Department of Anesthesiology, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China.,The Laboratory of Perioperative Medicine Research Center, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China
| | - Hui-Jun Dai
- Department of Anesthesiology, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China.,The Laboratory of Perioperative Medicine Research Center, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China
| | - Xue-Ke Du
- Department of Anesthesiology, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China.,The Laboratory of Perioperative Medicine Research Center, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China
| | - Jin-Yuan Lin
- Department of Anesthesiology, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China.,The Laboratory of Perioperative Medicine Research Center, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China
| | - Ling-Hui Pan
- Department of Anesthesiology, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China.,The Laboratory of Perioperative Medicine Research Center, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, China
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Peesapati VSR, Sadik M, Verma S, Attallah MA, Khan S. Panoramic Dominance of the Immune System in Cardiorenal Syndrome Type I. Cureus 2020; 12:e9869. [PMID: 32963910 PMCID: PMC7500732 DOI: 10.7759/cureus.9869] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 08/19/2020] [Indexed: 12/18/2022] Open
Abstract
Physiological organ cross-talk is necessary to maintain equilibrium and homeostasis. Heart and kidney are the essences of this equilibrium. Organ failure in either of these organs can perturb the bidirectional communication between them, impinging this unpleasant vascular and cellular milieu on other distant organs. Cardiorenal syndrome (CRS) type I occurs due to acute deterioration of cardiac function, ultimately causing acute kidney injury (AKI). This syndrome is an intricate condition with neurohormonal and inflammatory aspects. Inflammation creates a vicious circle filled with the innate and adaptive immune systems, pro-inflammatory cytokines, chemokines to actuate hemodynamic compromise in CRS type I patients. Pro-inflammatory cytokines not only aggravate fluid retention and venous congestion but also initiate apoptosis and oxidative stress. The immune response's primary motive is to elicit the heart and kidney to produce cytokines, intensifying the inflammatory process. Despite the possible standard of care, patient mortality, treatment cost, readmissions are extreme in CRS type I, and inflammation certainly has critical inferences warranting future research in humans.
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Affiliation(s)
| | - Mohammad Sadik
- Research, California Institute of Behavorial Neurosciences and Psychology, Fairfield, USA
| | - Sadhika Verma
- Research, California Institute of Behavorial Neurosciences and Psychology, Fairfield, USA
- Internal Medicine, Manipal College of Medical Sciences, Pokhara, NPL
| | - Marline A Attallah
- Research, California Institute of Behavorial Neurosciences and Psychology, Fairfield, USA
| | - Safeera Khan
- Internal Medicine, California Institute of Behavorial Neurosciences and Psychology, Fairfield, USA
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27
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Zhang Y, Li Y, Huang X, Zhang F, Tang L, Xu S, Liu Y, Tong N, Min W. Systemic Delivery of siRNA Specific for Silencing TLR4 Gene Expression Reduces Diabetic Cardiomyopathy in a Mouse Model of Streptozotocin-Induced Type 1 Diabetes. Diabetes Ther 2020; 11:1161-1173. [PMID: 32285313 PMCID: PMC7193037 DOI: 10.1007/s13300-020-00802-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Indexed: 02/05/2023] Open
Abstract
INTRODUCTION Diabetic cardiomyopathy is a cardiac dysfunction in patients with diabetes which may lead to overt heart failure and death. Toll-like receptor (TLR) signaling triggers diabetic cardiomyopathy through various mechanisms, one of which is the upregulation of TLR4 expression. The aim of this study was to delineate the role of TLR4 in diabetic cardiomyopathy. METHODS C57BL/6 mice were injected with streptozotocin to induce diabetes. The experimental and control groups were treated with 5 μg of TLR4 small interfering RNA (siRNA) or scrambled siRNA. Cardiac histopathology was evaluated by hematoxylin and eosin, Sirius red, and immunofluorescence staining after treatment with TLR4 siRNA. The myocardial fibrosis and inflammatory factors were detected by quantitative real-time polymerase chain reaction after treatment with TLR4 siRNA. The myocardial function was evaluated by echocardiography after treatment with TLR4 siRNA. RESULTS Compared with non-diabetic mouse hearts, hypertrophy, fibrosis, inflammation of cardiomyocytes, and myocardial dysfunction were significantly increased in diabetic mice (p < 0.05). Knockdown of TLR4 decreased hypertrophy, fibrosis, inflammation of cardiomyocytes, and myocardial dysfunction (p < 0.05). Cardiomyocytic cross-sectional areas in hearts of TLR4 siRNA-treated diabetic mice were similar to those of the sham-treated mice (p > 0.05). The induction of expression of cardiac fetal genes, beta-myosin heavy chain (β-MHC) and atrial natriuretic peptide (ANP), which are two markers of cardiac hypertrophy, was significantly reduced in TLR4 siRNA-treated hearts compared with controls (p < 0.05). Moreover, siRNA-mediated silencing of TLR4 reduced diabetes-induced collagen deposition (p < 0.05). Paralleled with changes in collagen deposition and the expression of collagen I and collagen III, knockdown of TLR4 also reduced the expression of transforming growth factor-β1 (TGFβ1) mRNA (p < 0.05). The increased expression of intercellular cell adhesion molecule 1 (ICAM-1) and vascular cell adhesion molecule 1 (VCAM-1) was significantly attenuated by TLR4 siRNA treatment in the hearts of diabetic mice (p < 0.05). Furthermore, both fractional shortening (FS) and ejection fraction (EF) values were preserved in TLR4 siRNA-treated diabetic mice compared with control siRNA-treated mice (31.80% ± 2.82% vs. 28.50% ± 5.83% for FS, p < 0.05) (57.95% ± 6.48% vs. 45.34% ± 4.25% for EF, p < 0.05). CONCLUSION Our study used siRNA to specifically silence TLR4 gene expression in the diabetic mouse heart in vivo and to investigate the role that TLR4 plays in diabetic cardiomyopathy. It is likely that silencing of the TLR4 gene through siRNA could prevent the development of diabetic cardiomyopathy.
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Affiliation(s)
- Yuwei Zhang
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Sichuan, China
| | - Yang Li
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Sichuan, China
| | - Xuefang Huang
- Endocrine and Metabolic Center, People's Hospital of Karamay, Xinjiang, China
| | - Fang Zhang
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Sichuan, China
| | - Lizhi Tang
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Sichuan, China
| | - Shishi Xu
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Sichuan, China
| | - Yuqi Liu
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Sichuan, China
| | - Nanwei Tong
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Sichuan, China.
| | - Weiping Min
- Departments of Surgery, Pathology, Medicine, Oncology, University of Western Ontario, London, ON, Canada.
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28
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Wagner MJ, Khan M, Mohsin S. Healing the Broken Heart; The Immunomodulatory Effects of Stem Cell Therapy. Front Immunol 2020; 11:639. [PMID: 32328072 PMCID: PMC7160320 DOI: 10.3389/fimmu.2020.00639] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 03/20/2020] [Indexed: 12/14/2022] Open
Abstract
Cardiovascular Disease (CVD) is a leading cause of mortality within the United States. Current treatments being administered to patients who suffered a myocardial infarction (MI) have increased patient survival, but do not facilitate the replacement of damaged myocardium. Recent studies demonstrate that stem cell-based therapies promote myocardial repair; however, the poor engraftment of the transferred stem cell populations within the infarcted myocardium is a major limitation, regardless of the cell type. One explanation for poor cell retention is attributed to the harsh inflammatory response mounted following MI. The inflammatory response coupled to cardiac repair processes is divided into two distinct phases. The first phase is initiated during ischemic injury when necrosed myocardium releases Danger Associated Molecular Patterns (DAMPs) and chemokines/cytokines to induce the activation and recruitment of neutrophils and pro-inflammatory M1 macrophages (MΦs); in turn, facilitating necrotic tissue clearance. During the second phase, a shift from the M1 inflammatory functional phenotype to the M2 anti-inflammatory and pro-reparative functional phenotype, permits the resolution of inflammation and the establishment of tissue repair. T-regulatory cells (Tregs) are also influential in mediating the establishment of the pro-reparative phase by directly regulating M1 to M2 MΦ differentiation. Current studies suggest CD4+ T-lymphocyte populations become activated when presented with autoantigens released from the injured myocardium. The identity of the cardiac autoantigens or paracrine signaling molecules released from the ischemic tissue that directly mediate the phenotypic plasticity of T-lymphocyte populations in the post-MI heart are just beginning to be elucidated. Stem cells are enriched centers that contain a diverse paracrine secretome that can directly regulate responses within neighboring cell populations. Previous studies identify that stem cell mediated paracrine signaling can influence the phenotype and function of immune cell populations in vitro, but how stem cells directly mediate the inflammatory microenvironment of the ischemic heart is poorly characterized and is a topic of extensive investigation. In this review, we summarize the complex literature that details the inflammatory microenvironment of the ischemic heart and provide novel insights regarding how paracrine mediated signaling produced by stem cell-based therapies can regulate immune cell subsets to facilitate pro-reparative myocardial wound healing.
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Affiliation(s)
- Marcus J Wagner
- Independence Blue Cross Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Mohsin Khan
- Center for Metabolic Disease, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States.,Department of Physiology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Sadia Mohsin
- Independence Blue Cross Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States.,Department of Pharmacology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
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Wu PF, Chen GL. Interleukin-6 Response of C 2C 12 Myotubes Stimulated with Lipopolysaccharide and Lipoic Acid. J Interferon Cytokine Res 2020; 40:254-261. [PMID: 32176561 DOI: 10.1089/jir.2019.0170] [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: 11/12/2022] Open
Abstract
Our previous study explored the dual effect of lipoic acid on the regulation of IL-6 expression in C2C12 myotubes. However, the specific mechanism remains unclear. To evaluate IL-6 signaling in skeletal muscle, pCMV6-IL-6 was overexpressed in C2C12 myotubes. The real-time quantitative polymerase chain reaction was used to detect mRNA expression. Immunohistochemistry and a DeadEnd colorimetric TUNEL system were used to detect IL-6 localization and analyze the apoptosis in IL-6-overexpressing cells, respectively. A caspase-3/CPP32 colorimetric assay and Western blotting were used to analyze caspase-3 activity and protein expression, respectively. Our results showed the overexpressed IL-6 was not only located in the cytosol but also on the intracellular side of the cell membrane. Moreover, the nucleus did not demonstrate IL-6 overexpression. The DeadEnd colorimetric apoptosis detection assay results demonstrated that apoptotic nuclei were present in IL-6-overexpressing cells. However, the overexpressed IL-6 failed to promote caspase-3 activity. Notably, the exogenous pyrogen lipopolysaccharide (LPS) significantly promoted IL-6 mRNA expression and caspase-3 activity but did not induce apoptotic cell formation. Moreover, lipoic acid significantly upregulated IL-6, IL-6Ra, and gp130 mRNA expression and significantly increased caspase-3 activity but did not induce apoptotic cell formation. Lipoic acid significantly increased the p-Akt level in untreated cells but not in LY294002-treated cells. Taken together, our results suggesting that the overexpressed IL-6-induced apoptosis may not be mediated by caspase-3. LPS-induced IL-6 mRNA expression may not be involved in IL-6 classical signaling or trans-signaling in C2C12 myotubes. Lipoic acid-induced IL-6 mRNA expression may be mediated by IL-6 classical signaling in C2C12 myotubes. [Figure: see text].
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Affiliation(s)
- Pei-Fung Wu
- Department of Kinesiology, Health and Leisure Studies, National University of Kaohsiung, Kaohsiung, Taiwan
| | - Guan-Lin Chen
- Department of Kinesiology, Health and Leisure Studies, National University of Kaohsiung, Kaohsiung, Taiwan
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30
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Tlr4 participates in the responses of markers of apoptosis, inflammation, and ER stress to different acute exercise intensities in mice hearts. Life Sci 2020; 240:117107. [DOI: 10.1016/j.lfs.2019.117107] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/25/2019] [Accepted: 11/25/2019] [Indexed: 12/29/2022]
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31
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Cellular cross-talks in the diseased and aging heart. J Mol Cell Cardiol 2020; 138:136-146. [DOI: 10.1016/j.yjmcc.2019.11.152] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 11/21/2019] [Indexed: 12/20/2022]
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32
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Adenine Nucleotide Translocase 1 Expression is Coupled to the HSP27-Mediated TLR4 Signaling in Cardiomyocytes. Cells 2019; 8:cells8121588. [PMID: 31817787 PMCID: PMC6952976 DOI: 10.3390/cells8121588] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 12/03/2019] [Accepted: 12/03/2019] [Indexed: 12/21/2022] Open
Abstract
The cardiac-specific overexpression of the adenine nucleotide translocase 1 (ANT1) has cardioprotective effects in various experimental heart disease models. Here, we analyzed the link between ANT1 expression and heat shock protein 27 (HSP27)-mediated toll-like receptor 4 (TLR4) signaling, which represents a novel communication pathway between mitochondria and the extracellular environment. The interaction between ANT1 and HSP27 was identified by co-immunoprecipitation from neonatal rat cardiomyocytes. ANT1 transgenic (ANT1-TG) cardiomyocytes demonstrated elevated HSP27 expression levels. Increased levels of HSP27 were released from the ANT1-TG cardiomyocytes under both normoxic and hypoxic conditions. Extracellular HSP27 stimulated TLR4 signaling via protein kinase B (AKT). The HSP27-mediated activation of the TLR4 pathway was more pronounced in ANT1-TG cardiomyocytes than in wild-type (WT) cardiomyocytes. HSP27-specific antibodies inhibited TLR4 activation and the expression of HSP27. Inhibition of the HSP27-mediated TLR4 signaling pathway with the TLR4 inhibitor oxidized 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine (OxPAPC) reduced the mitochondrial membrane potential (∆ψm) and increased caspase 3/7 activity, which are both markers for cell stress. Conversely, treating cardiomyocytes with recombinant HSP27 protein stimulated TLR4 signaling, induced HSP27 and ANT1 expression, and stabilized the mitochondrial membrane potential. The activation of HSP27 signaling was verified in ischemic ANT1-TG heart tissue, where it correlated with ANT1 expression and the tightness of the inner mitochondrial membrane. Our study shows a new mechanism by which ANT1 is part of the cardioprotective HSP27-mediated TLR4 signaling.
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33
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The role of toll-like receptors in myocardial toxicity induced by doxorubicin. Immunol Lett 2019; 217:56-64. [PMID: 31707054 DOI: 10.1016/j.imlet.2019.11.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 10/21/2019] [Accepted: 11/06/2019] [Indexed: 02/06/2023]
Abstract
Doxorubicin is an effective antitumor drug commonly used in the treatment of a wide variety of cancers. However, doxorubicin may cause cardiac toxicity, which can cause congestive heart failure in severe cases, and this seriously limits its clinical application. It is believed that doxorubicin promotes the formation of reactive oxygen species, inducing oxidative stress, and at the same time, reduces the content of antioxidant substances in cardiac tissues, causing adverse effects. Toll-like receptors (TLRs) are biomolecules expressed on the surfaces of macrophages, dendritic cells, and epithelial cells that can recognize various types of pathogen-related or damage-related molecular patterns. In recent years, a large number of studies have confirmed that TLRs play important roles in the cardiac toxicity induced by doxorubicin. This review aimed to explore the role of TLRs in the cardiac toxicity induced by doxorubicin and provide possible solutions.
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Zhang SP, Yang RH, Shang J, Gao T, Wang R, Peng XD, Miao X, Pan L, Yuan WJ, Lin L, Hu QK. FOXC1 up-regulates the expression of toll-like receptors in myocardial ischaemia. J Cell Mol Med 2019; 23:7566-7580. [PMID: 31517441 PMCID: PMC6815849 DOI: 10.1111/jcmm.14626] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 05/20/2019] [Accepted: 08/06/2019] [Indexed: 01/01/2023] Open
Abstract
Myocardial ischaemia (MI) remains a major cause of death and disability worldwide. Accumulating evidence suggests a significant role for innate immunity, in which the family of toll‐like receptors (TLRs) acts as an essential player. We previously reported and reviewed the changes of Tlr expression in models of MI. However, the underlying mechanisms regulating Tlr expression in MI remain unclear. The present study first screened transcription factors (TFs) that potentially regulate Tlr gene transcription based on in silico analyses followed by experimental verification, using both in vivo and in vitro models. Forkhead box C1 (FOXC1) was identified as a putative TF, which was highly responsive to MI. Next, by focusing on two representative TLR subtypes, an intracellular subtype TLR3 and a cell‐surface subtype TLR4, the regulation of FOXC1 on Tlr expression was investigated. The overexpression or knockdown of FoxC1 was observed to up‐ or down‐regulate Tlr3/4 mRNA and protein levels, respectively. A dual‐luciferase assay showed that FOXC1 trans‐activated Tlr3/4 promoter, and a ChIP assay showed direct binding of FOXC1 to Tlr3/4 promoter. Last, a functional study of FOXC1 was performed, which revealed the pro‐inflammatory effects of FOXC1 and its destructive effects on infarct size and heart function in a mouse model of MI. The present study for the first time identified FOXC1 as a novel regulator of Tlr expression and described its function in MI.
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Affiliation(s)
- Shao-Ping Zhang
- Department of Physiology, Institute of Basic Medicine, Ningxia Medical University, Yinchuan, China.,Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ruo-Han Yang
- Department of Pharmacology, College of Pharmacy, Ningxia Medical University, Yinchuan, China.,Department of Pharmacy, First People's Hospital, Guangyuan, China
| | - Jia Shang
- Department of Physiology, Institute of Basic Medicine, Ningxia Medical University, Yinchuan, China.,Department of Physiology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Ting Gao
- Department of Physiology, Institute of Basic Medicine, Ningxia Medical University, Yinchuan, China.,Department of Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Rui Wang
- Department of Physiology, Institute of Basic Medicine, Ningxia Medical University, Yinchuan, China.,Department of Pharmacology, College of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Xiao-Dong Peng
- Department of Pharmacology, College of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Xiao Miao
- Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lei Pan
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wen-Jun Yuan
- Department of Physiology, Institute of Basic Medicine, Ningxia Medical University, Yinchuan, China.,Department of Physiology, Second Military Medical University, Shanghai, China
| | - Li Lin
- Department of Physiology, Institute of Basic Medicine, Ningxia Medical University, Yinchuan, China.,Department of Physiology, Second Military Medical University, Shanghai, China.,Key Laboratory of Arrhythmias of the Ministry of Education of China, Tongji University, Shanghai, China
| | - Qi-Kuan Hu
- Department of Physiology, Institute of Basic Medicine, Ningxia Medical University, Yinchuan, China
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35
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Chen Z, Dong WH, Chen Q, Li QG, Qiu ZM. Downregulation of miR-199a-3p mediated by the CtBP2-HDAC1-FOXP3 transcriptional complex contributes to acute lung injury by targeting NLRP1. Int J Biol Sci 2019; 15:2627-2640. [PMID: 31754335 PMCID: PMC6854378 DOI: 10.7150/ijbs.37133] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 08/27/2019] [Indexed: 02/07/2023] Open
Abstract
Emerging evidence indicates that microRNAs (miRNAs) play fundamental roles in the pathogenesis of multiple diseases, including acute lung injury (ALI). Here, we discovered that miR-199a-3p was significantly downregulated in ALI lung tissues using a microarray analysis. In vitro lipopolysaccharide (LPS) treatment of the human epithelial cell line A549 and the human macrophage cell line U937 caused a decrease of miR-199a-3p. Mechanically, miR-199a-3p specifically bound to the 3'-untranslated region (3'-UTR) of NLRP1 (nucleotide-binding oligomerization domain, leucine-rich repeat and pyrin domain-containing protein 1), a critical member of inflammasomes. Ectopic overexpression or downregulation of miR-199a-3p resulted in the repression or induction of NLRP1, respectively, thereby downregulating or activating its downstream events. Moreover, transcription factor FOXP3 (forkhead box P3) was able to specifically bind to the promoter of miR-199a-3p. Knockdown or overexpression of FOXP3 resulted in a decrease or induction miR-199a-3p expression, respectively. Using immunoprecipitation (IP), mass spectrometry and co-IP assays, we found that FOXP3 formed a transcriptional complex with HDAC1 (histone deacetylase 1) and CtBP2 (C-terminal-binding protein 2). Collectively, our results suggested that the CtBP2-HDAC1-FOXP3 transcriptional complex (CHFTC) could specifically bind to the promoter of miR-199a-3p and repress its expression. Downregulation of miR-199a-3p eliminated its inhibition of NLRP1, causing activation of NLRP1 and cleavage of pro-IL-1β and pro-IL-18 mediated by Caspase-1. The secretion of IL-1β and IL-18 further aggravated the inflammatory response and resulted in the occurrence of ALI.
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Affiliation(s)
- Zhi Chen
- Department of Pulmonary and Critical Care Medicine, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China.,Department of Critical Care Medicine, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang 330006, Jiangxi, China
| | - Wei-Hua Dong
- Department of Critical Care Medicine, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang 330006, Jiangxi, China
| | - Qiang Chen
- Department of Pulmonary and Critical Care Medicine, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Qiu-Gen Li
- Department of Pulmonary and Critical Care Medicine, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang 330006, Jiangxi, China
| | - Zhong-Min Qiu
- Department of Pulmonary and Critical Care Medicine, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
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36
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Yan W, Abu-El-Rub E, Saravanan S, Kirshenbaum LA, Arora RC, Dhingra S. Inflammation in myocardial injury: mesenchymal stem cells as potential immunomodulators. Am J Physiol Heart Circ Physiol 2019; 317:H213-H225. [PMID: 31125258 PMCID: PMC6732476 DOI: 10.1152/ajpheart.00065.2019] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 05/13/2019] [Accepted: 05/20/2019] [Indexed: 02/08/2023]
Abstract
Ischemic heart disease is a growing worldwide epidemic. Improvements in medical and surgical therapies have reduced early mortality after acute myocardial infarction and increased the number of patients living with chronic heart failure. The irreversible loss of functional cardiomyocytes puts these patients at significant risk of ongoing morbidity and mortality after their index event. Recent evidence suggests that inflammation is a key mediator of postinfarction adverse remodeling in the heart. In this review, we discuss the cardioprotective and deleterious effects of inflammation and its mediators during acute myocardial infarction. We also explore the role of mesenchymal stem cell therapy to limit secondary injury and promote myocardial healing after myocardial infarction.
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Affiliation(s)
- Weiang Yan
- Institute of Cardiovascular Sciences, Saint Boniface Hospital Research Centre, Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba , Winnipeg , Canada
- Section of Cardiac Surgery, Department of Surgery, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba , Winnipeg , Canada
| | - Ejlal Abu-El-Rub
- Institute of Cardiovascular Sciences, Saint Boniface Hospital Research Centre, Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba , Winnipeg , Canada
| | - Sekaran Saravanan
- Centre for Nanotechnology and Advanced Biomaterials, Department of Bioengineering, SASTRA University , Thanjavur, Tamil Nadu , India
| | - Lorrie A Kirshenbaum
- Institute of Cardiovascular Sciences, Saint Boniface Hospital Research Centre, Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba , Winnipeg , Canada
| | - Rakesh C Arora
- Institute of Cardiovascular Sciences, Saint Boniface Hospital Research Centre, Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba , Winnipeg , Canada
- Section of Cardiac Surgery, Department of Surgery, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba , Winnipeg , Canada
| | - Sanjiv Dhingra
- Institute of Cardiovascular Sciences, Saint Boniface Hospital Research Centre, Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba , Winnipeg , Canada
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37
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Darwesh AM, Sosnowski DK, Lee TYT, Keshavarz-Bahaghighat H, Seubert JM. Insights into the cardioprotective properties of n-3 PUFAs against ischemic heart disease via modulation of the innate immune system. Chem Biol Interact 2019; 308:20-44. [DOI: 10.1016/j.cbi.2019.04.037] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/17/2019] [Accepted: 04/30/2019] [Indexed: 12/19/2022]
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38
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Rotter Sopasakis V, Sandstedt J, Johansson M, Lundqvist A, Bergström G, Jeppsson A, Mattsson Hultén L. Toll-like receptor-mediated inflammation markers are strongly induced in heart tissue in patients with cardiac disease under both ischemic and non-ischemic conditions. Int J Cardiol 2019; 293:238-247. [PMID: 31230935 DOI: 10.1016/j.ijcard.2019.06.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 05/29/2019] [Accepted: 06/12/2019] [Indexed: 01/04/2023]
Abstract
BACKGROUND A sustained low grade inflammatory state is a recognized feature of various diseases, including cardiovascular disease. This state of chronic inflammation involves activation of Toll-like receptor (TLR) signaling. However, little is known regarding the genetic profile of TLR components in cardiac tissue from patients with cardiac disease. METHODS In this study we investigated the genetic profile of 84 TLR markers in a unique set of cardiac tissue from patients that had undergone either coronary artery bypass grafting (CABG) or aortic valve replacement (AVR). In addition, we compared the gene data from the cardiac tissue with the same gene profile in blood as well as circulating cytokines to elucidate possible targets in blood that could be used to estimate the inflammatory state of the heart in cardiac disease. RESULTS We found a marked upregulation of TLR-induced inflammation in cardiac tissue from both patient groups compared to healthy controls. The inflammation appeared to be primarily mediated through TLR1, 3, 7, 8 and 10, resulting in a marked induction of mediators of the innate immune response. Furthermore, the gene expression data in combination with unbiased multivariate analysis suggested a difference in inflammatory response in ischemic cardiac tissue compared to non-ischemic cardiac tissue. Serum levels of IL-13 were significantly elevated in both CABG and AVR patients compared to controls, whereas other cytokines did not appear to coincide with cardiac TLR-induced inflammation. CONCLUSIONS We propose that cardiac disease in humans may be mediated by local cardiac TLR signaling under both ischemic and non-ischemic conditions.
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Affiliation(s)
- Victoria Rotter Sopasakis
- Department of Clinical Chemistry, Sahlgrenska University Hospital and Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden.
| | - Joakim Sandstedt
- Department of Clinical Chemistry, Sahlgrenska University Hospital and Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Michaela Johansson
- Department of Clinical Chemistry, Sahlgrenska University Hospital and Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Annika Lundqvist
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Göran Bergström
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
| | - Anders Jeppsson
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden; Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, SE-413 45 Gothenburg, Sweden
| | - Lillemor Mattsson Hultén
- Department of Clinical Chemistry, Sahlgrenska University Hospital and Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden; Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden
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39
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Younis NS, Mohamed ME. β-Caryophyllene as a Potential Protective Agent Against Myocardial Injury: The Role of Toll-Like Receptors. Molecules 2019; 24:molecules24101929. [PMID: 31109132 PMCID: PMC6572120 DOI: 10.3390/molecules24101929] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 05/10/2019] [Accepted: 05/16/2019] [Indexed: 12/22/2022] Open
Abstract
Myocardial infarction (MI) remains one of the major causes of mortality around the world. A possible mechanism involved in myocardial infarction is the engagement of Toll-like receptors (TLRs). This study was intended to discover the prospective cardioprotective actions of β-caryophyllene, a natural sesquiterpene, to ameliorate isoproterenol (ISO)-induced myocardial infarction through HSP-60/TLR/MyD88/NFκB pathway. β-Caryophyllene (100 or 200 mg/kg/day orally) was administered for 21 days then MI was induced via ISO (85 mg/kg, subcutaneous) on 20th and 21st days. The results indicated that ISO induced a significant infarcted area associated with several alterations in the electrocardiogram (ECG) and blood pressure (BP) indices and caused an increase in numerous cardiac indicators such as creatine phosphokinase (CPK), creatine kinase-myocardial bound (CK-MB), lactate dehydrogenase (LDH), and cardiac tropinine T (cTnT). In addition, ISO significantly amplified heat shock protein 60 (HSP-60) and other inflammatory markers, such as TNF-α, IL-Iβ, and NFκB, and affected TLR2 and TLR4 expression and their adaptor proteins; Myeloid differentiation primary response 88 (MYD88), and TIR-domain-containing adapter-inducing interferon-β (TRIF). On the other hand, consumption of β-caryophyllene significantly reversed the infarcted size, ECG and BP alterations, ameliorated the ISO elevation in cardiac indicators; it also notably diminished HSP-60, and subsequently TLR2, TLR4, MYD88, and TRIF expression, with a substantial reduction in inflammatory mediator levels. This study revealed the cardioprotective effect of β-caryophyllene against MI through inhibiting HSP-60/TLR/MyD88/NFκB signaling pathways.
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Affiliation(s)
- Nancy S Younis
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, 31982 Al-Ahsa, Saudi Arabia.
- Department of Pharmacology, Zagazig University, Zagazig 44519, Egypt.
| | - Maged E Mohamed
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, 31982 Al-Ahsa, Saudi Arabia.
- Department of Pharmacognosy, College of Pharmacy, Zagazig University, Zagazig 44519, Egypt.
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40
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Chowdhury M, Li CF, He Z, Lu Y, Liu XS, Wang YF, Ip YT, Strand MR, Yu XQ. Toll family members bind multiple Spätzle proteins and activate antimicrobial peptide gene expression in Drosophila. J Biol Chem 2019; 294:10172-10181. [PMID: 31088910 DOI: 10.1074/jbc.ra118.006804] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 05/10/2019] [Indexed: 12/31/2022] Open
Abstract
The Toll signaling pathway in Drosophila melanogaster regulates several immune-related functions, including the expression of antimicrobial peptide (AMP) genes. The canonical Toll receptor (Toll-1) is activated by the cytokine Spätzle (Spz-1), but Drosophila encodes eight other Toll genes and five other Spz genes whose interactions with one another and associated functions are less well-understood. Here, we conducted in vitro assays in the Drosophila S2 cell line with the Toll/interleukin-1 receptor (TIR) homology domains of each Toll family member to determine whether they can activate a known target of Toll-1, the promoter of the antifungal peptide gene drosomycin. All TIR family members activated the drosomycin promoter, with Toll-1 and Toll-7 TIRs producing the highest activation. We found that the Toll-1 and Toll-7 ectodomains bind Spz-1, -2, and -5, and also vesicular stomatitis virus (VSV) virions, and that Spz-1, -2, -5, and VSV all activated the promoters of drosomycin and several other AMP genes in S2 cells expressing full-length Toll-1 or Toll-7. In vivo experiments indicated that Toll-1 and Toll-7 mutants could be systemically infected with two bacterial species (Enterococcus faecalis and Pseudomonas aeruginosa), the opportunistic fungal pathogen Candida albicans, and VSV with different survival times in adult females and males compared with WT fly survival. Our results suggest that all Toll family members can activate several AMP genes. Our results further indicate that Toll-1 and Toll-7 bind multiple Spz proteins and also VSV, but they differentially affect adult survival after systemic infection, potentially because of sex-specific differences in Toll-1 and Toll-7 expression.
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Affiliation(s)
- Munmun Chowdhury
- From the Division of Cell Biology and Biophysics, School of Biological Sciences, University of Missouri-Kansas City, Kansas City, Missouri 64110
| | - Chun-Feng Li
- From the Division of Cell Biology and Biophysics, School of Biological Sciences, University of Missouri-Kansas City, Kansas City, Missouri 64110.,the State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China
| | - Zhen He
- From the Division of Cell Biology and Biophysics, School of Biological Sciences, University of Missouri-Kansas City, Kansas City, Missouri 64110.,the School of Life Sciences, Central China Normal University, Wuhan 430079, China
| | - Yuzhen Lu
- the Guangzhou Key Laboratory of Insect Development Regulation and Application Research, Institute of Insect Science and Technology and School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Xu-Sheng Liu
- the School of Life Sciences, Central China Normal University, Wuhan 430079, China
| | - Yu-Feng Wang
- the School of Life Sciences, Central China Normal University, Wuhan 430079, China
| | - Y Tony Ip
- the Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Michael R Strand
- the Department of Entomology, University of Georgia, Athens, Georgia 30602, and
| | - Xiao-Qiang Yu
- From the Division of Cell Biology and Biophysics, School of Biological Sciences, University of Missouri-Kansas City, Kansas City, Missouri 64110, .,the School of Life Sciences, Central China Normal University, Wuhan 430079, China.,the Guangzhou Key Laboratory of Insect Development Regulation and Application Research, Institute of Insect Science and Technology and School of Life Sciences, South China Normal University, Guangzhou 510631, China
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Wang SY, Sang JW, Ding W, Qin TW, Bai L, Zhang J, Luo JC. The cytoptrotection of small intestinal submucosa-derived gel in HL-1 cells during hypoxia/reoxygenation-induced injury. J Tissue Eng Regen Med 2019; 13:1346-1361. [PMID: 31062928 DOI: 10.1002/term.2878] [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: 07/04/2018] [Revised: 03/25/2019] [Accepted: 04/29/2019] [Indexed: 02/05/2023]
Abstract
Small intestinal submucosa (SIS)-derived gel injected into infarcted myocardium has been shown to promote repair and regeneration after myocardial infarction (MI); however, the specific impact of SIS gel on cardiomyocytes remained unknown. The aim of this study was to characterise SIS gel function in hypoxia-reoxygenation (H/R)-induced cardiomyocyte damage and its potential mechanism. HL-1 cardiomyocytes seeded on SIS matrix-coated plates, SIS gel, and uncoated plates were subjected to H/R, cell viability, apoptosis, expression of caspase-3, Bcl-2, and Bax were investigated. SIS gel and SIS matrix as coating substrates markedly improved cell viability, preventing cell apoptosis compared with uncoated plates, with SIS gel yielding the best cytoprotective effects. SIS gel down-regulated expression of pro-inflammatory cytokines (TNF-α, CCL2, and IL-6) by inhibiting the JNK-mitogen-activated protein kinase (MAPK)/NF-κB pathways. Furthermore, SIS gel protected cardiomyocytes from apoptosis by activating protein kinase B (AKT) and extracellular-signal-regulated kinase (ERK) pathways, and markedly up-regulated antiapoptotic Bcl-2 expression but inhibited that of proapoptotic Bax and c-caspase 3. Together, these findings show that SIS gel could decrease H/R-induced cell apoptosis through a mechanism potentially related to its ability to regulate expression of inflammatory cytokines and antiapoptosis signalling pathways to prevent cell apoptosis. Our findings thereby shed light on the mechanism related to SIS gel therapeutic efficacy for MI.
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Affiliation(s)
- Su-Ya Wang
- Division of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Jiang-Wei Sang
- Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, China
| | - Wei Ding
- Division of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Ting-Wu Qin
- Division of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Lin Bai
- Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, China
| | - Jie Zhang
- Key Laboratory of Transplant Engineering and Immunology, Ministry of Health, West China Hospital, Sichuan University, Chengdu, China
| | - Jing-Cong Luo
- Division of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China
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Yan X, Dong N, Hao X, Xing Y, Tian X, Feng J, Xie J, Lv Y, Wei C, Gao Y, Qiu Y, Wang T. Comparative Transcriptomics Reveals the Role of the Toll-Like Receptor Signaling Pathway in Fluoride-Induced Cardiotoxicity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:5033-5042. [PMID: 30964671 DOI: 10.1021/acs.jafc.9b00312] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Many studies have shown that fluorosis due to long-term fluoride intake has damaging effects on the heart. However, the mechanisms underlying cardiac fluorosis have not been illuminated in detail. We performed high-throughput transcriptome sequencing (RNA-Seq) on rat cardiac tissue to explore the molecular effects of NaF exposure. In total, 372 and 254 differentially expressed genes (DEGs) were identified between a group given 30 mg/L NaF and control and between a group given 90 mg/L NaF and control, respectively. The transcript levels of most of these genes were significantly down-regulated and many were distributed in the Toll-like receptor signaling pathway. Transcriptome analysis revealed that herpes simplex infection, ECM-receptor interaction, influenza A, cytokine-cytokine receptor interaction, apoptosis, and Toll-like receptor signaling pathway were significantly affected. IL-6 and IL-10 may play a crucial role in the cardiac damage caused by NaF as external stimuli according to protein-protein interaction (PPI) network analysis. The results of qRT-PCR and Western blotting showed a marked decreased mRNA and protein levels of IL-1, IL-6, and IL-10 in the low concentration fluoride (LF) and high concentration fluoride (HF) groups, which was in agreement with RNA-Seq results. This is the first study to investigate NaF-induced cardiotoxicity at a transcriptome level.
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Affiliation(s)
- Xiaoyan Yan
- School of Public Health , Shanxi Medical University , Taiyuan , Shanxi 030001 , China
| | - Nisha Dong
- School of Public Health , Shanxi Medical University , Taiyuan , Shanxi 030001 , China
| | - Xianhui Hao
- Medical Faculty , Kunming University of Science and Technology , Kunming , Yunnan 650000 , China
| | - Yangang Xing
- Gujiao City Animal Husbandry and Veterinary Technical Service Center , Taiyuan , Shanxi 030200 , China
| | - Xiaolin Tian
- Shanxi Key Laboratory of Experimental Animal and Human Disease Animal Models , Shanxi Medical University , Taiyuan , Shanxi 030001 , China
| | - Jing Feng
- Shanxi Key Laboratory of Experimental Animal and Human Disease Animal Models , Shanxi Medical University , Taiyuan , Shanxi 030001 , China
| | - Jiaxin Xie
- School of Public Health , Shanxi Medical University , Taiyuan , Shanxi 030001 , China
| | - Yi Lv
- School of Public Health , Shanxi Medical University , Taiyuan , Shanxi 030001 , China
| | - Cailing Wei
- School of Public Health , Shanxi Medical University , Taiyuan , Shanxi 030001 , China
| | - Yi Gao
- School of Public Health , Shanxi Medical University , Taiyuan , Shanxi 030001 , China
| | - Yulan Qiu
- School of Public Health , Shanxi Medical University , Taiyuan , Shanxi 030001 , China
| | - Tong Wang
- School of Public Health , Shanxi Medical University , Taiyuan , Shanxi 030001 , China
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43
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Zhao X, Feng J, Zhang L, Zhao F, Li M, Du Y, Li Y, Wu Q, Li G. One functional variant in the 3'-untranslated region of TLR4 is associated with the elevated risk of ventilator-associated pneumonia in the patients with chronic obstructive pulmonary disease. J Cell Physiol 2019; 234:18879-18886. [PMID: 30972742 DOI: 10.1002/jcp.28526] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/15/2019] [Accepted: 02/19/2019] [Indexed: 12/18/2022]
Abstract
The aim of this study was to identify the association polymorphism (rs11536889) in the 3'-untranslated region (3'-UTR) of Toll-like receptors 4 (TLR4) and the risk for ventilator-associated pneumonia (VAP). miRNA database online and luciferase assays were used to validate TLR4 as the target gene of miR-1236. Enzyme-linked immunosorbent assay analysis and western blot were used to analyze the level of TLR4 in different genotype groups. In the present study, miR-1236 was predicted to bind to the rs11536889 G allele rather than the rs11536889 C allele, which was further confirmed by the luciferase activity suppressed by a fragment of 3'-UTR containing the rs11536889 G allele induced by lipopolysaccharide (LPS) and interleukin-6 (IL-6). Bronchial epithelial cells isolated from participants genotyped as GG, GC, and CC, with no remarkable difference in TLR4 messenger RNA (mRNA) levels were observed among these genotype groups. After stimulating by LPS, a TLR4 ligand, the CC-genotyped cells expressed higher levels of IL-8, IL-6, and tumor necrosis factor alpha (TNF-α) on their surfaces than cells with the other genotypes. Finally, the western blot analysis results showed that the expression level of IL-8, IL-6, and TNF-α protein was much higher in the CC group than the GC and GG groups subsequent to stimulation by LPS, and the IL-8, IL-6, and TNF-α protein levels in the GC were grouped much lower compared with the GG group. These findings indicated the regulatory association of miR-1236 with TLR4 and the abnormal expression of TLR4 caused by the presence of rs11536889 in the 3'-UTR of mRNA, which interfere with its interaction with the miR-1236, contributing to the risk of VAP.
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Affiliation(s)
- Xiaoyun Zhao
- Department of Respiratory and Critical Care Medicine, Tianjin Chest Hospital, Tianjin, China.,Graduate School, Tianjin Medical University, Tianjin, China
| | - Jihong Feng
- Respiratory Department, Second Affiliated Hospital of Tianjin University of TCM, Tianjin, China
| | - Li Zhang
- Department of Respiratory and Critical Care Medicine, Tianjin Chest Hospital, Tianjin, China
| | - Fang Zhao
- Department of Respiratory and Critical Care Medicine, Tianjin Chest Hospital, Tianjin, China
| | - Meifeng Li
- Respiratory Department, Second Affiliated Hospital of Tianjin University of TCM, Tianjin, China
| | - Ying Du
- Respiratory Department, Second Affiliated Hospital of Tianjin University of TCM, Tianjin, China
| | - Yuechuan Li
- Department of Respiratory and Critical Care Medicine, Tianjin Chest Hospital, Tianjin, China
| | - Qi Wu
- Graduate School, Tianjin Medical University, Tianjin, China.,Department of Respiratory and Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin, China
| | - Guanhua Li
- Department of Respiratory and Critical Care Medicine, Tianjin Chest Hospital, Tianjin, China
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Harmful Roles of TLR3 and TLR9 in Cardiac Dysfunction Developing during Polymicrobial Sepsis. BIOMED RESEARCH INTERNATIONAL 2018; 2018:4302726. [PMID: 30364002 PMCID: PMC6186377 DOI: 10.1155/2018/4302726] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 08/21/2018] [Accepted: 08/30/2018] [Indexed: 01/04/2023]
Abstract
We determined the roles of TLR3 and TLR9 in adverse events of polymicrobial sepsis, with a focus on development of septic cardiomyopathy, progression of which we have recently shown to be complement- and histones-dependent. So Wt, TLR3-knocked out (K.O.), and TLR9-K.O. mice were subjected to polymicrobial sepsis following cecal ligation and puncture (CLP). In the absence of either TLR3 or TLR9, the intensity of echocardiogram (Echo)-Doppler dysfunction during development of cardiomyopathy was substantially reduced in the K.O. mice. Based on our prior studies emphasizing the adverse effects of plasma C5a and histones in the cardiomyopathy of sepsis, in TLR3- and TLR9-K.O. mice, there were striking reductions in plasma levels of C5a and histones as well as reduced levels of cytokines in plasma and heart tissue after CLP. Since we know that histones cause cardiac dysfunction, rat cardiomyocytes (CMs) were exposed in vitro to the histones (purified from calf thymus), which caused bleb formation on the surfaces of CMs, suggesting histones may perturb the cell membrane of CMs. In vitro, exposure of CMs to the histones for 3 hours caused lactate dehydrogenase release from CMs. These data indicate that sepsis-induced cardiac dysfunction requires presence of TLR3 and TLR9 and may be linked to histone-induced damage of CMs.
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45
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Ayoub KF, Pothineni NVK, Rutland J, Ding Z, Mehta JL. Immunity, Inflammation, and Oxidative Stress in Heart Failure: Emerging Molecular Targets. Cardiovasc Drugs Ther 2018; 31:593-608. [PMID: 28956198 DOI: 10.1007/s10557-017-6752-z] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
PURPOSE Heart failure (HF) remains a major cause of morbidity and mortality worldwide. Although various therapies developed over the last two decades have shown improved long term outcomes in patients with established HF, there has been little progress in preventing the adverse cardiac remodeling that initiates HF. To fill the gap in treatment, current research efforts are focused on understanding novel mechanisms and signaling pathways. Immune activation, inflammation, oxidative stress, alterations in mitochondrial bioenergetics, and autophagy have been postulated as important pathophysiological events in this process. An improved understanding of these complex processes could facilitate a therapeutic shift toward molecular targets that can potentially alter the course of HF. METHODS In this review, we address the role of immunity, inflammation, and oxidative stress as well as other novel emerging concepts in the pathophysiology of HF that may have therapeutic implications. CONCLUSION Based on the experimental and clinical studies presented here, we anticipate that a better understanding of the pathophysiology of HF will open the door for new therapeutic targets. A one-size-fits-all approach may not be appropriate for all patients with HF, and further clinical trials utilizing molecular targeting in HF may result in improved outcomes.
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Affiliation(s)
- Karam F Ayoub
- Division of Cardiology, Central Arkansas Veterans Healthcare System and the University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Naga Venkata K Pothineni
- Division of Cardiology, Central Arkansas Veterans Healthcare System and the University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Joshua Rutland
- Division of Cardiology, Central Arkansas Veterans Healthcare System and the University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Zufeng Ding
- Division of Cardiology, Central Arkansas Veterans Healthcare System and the University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Jawahar L Mehta
- Division of Cardiology, Central Arkansas Veterans Healthcare System and the University of Arkansas for Medical Sciences, Little Rock, AR, USA. .,Division of Cardiovascular Medicine, University of Arkansas for Medical Sciences, 4301 W. Markham Street, #532, Little Rock, AR, 72205, USA.
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46
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Spurthi KM, Sarikhani M, Mishra S, Desingu PA, Yadav S, Rao S, Maity S, Tamta AK, Kumar S, Majumdar S, Jain A, Raghuraman A, Khan D, Singh I, Samuel RJ, Ramachandra SG, Nandi D, Sundaresan NR. Toll-like receptor 2 deficiency hyperactivates the FoxO1 transcription factor and induces aging-associated cardiac dysfunction in mice. J Biol Chem 2018; 293:13073-13089. [PMID: 29929978 DOI: 10.1074/jbc.ra118.001880] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 06/09/2018] [Indexed: 12/17/2022] Open
Abstract
Toll-like receptors (TLRs) are a family of pattern-recognition receptors involved in innate immunity. Previous studies have shown that TLR2 inhibition protects the heart from acute stress, including myocardial infarction and doxorubicin-induced cardiotoxicity in animal models. However, the role of TLR2 in the development of aging-associated heart failure is not known. In this work, we studied aging-associated changes in structure and function of TLR2-deficient mice hearts. Whereas young TLR2-KO mice did not develop marked cardiac dysfunction, 8- and 12-month-old TLR2-KO mice exhibited spontaneous adverse cardiac remodeling and cardiac dysfunction in an age-dependent manner. The hearts of the 8-month-old TLR2-KO mice had increased fibrosis, cell death, and reactivation of fetal genes. Moreover, TLR2-KO hearts displayed reduced infiltration by macrophages, increased numbers of myofibroblasts and atrophic cardiomyocytes, and higher levels of the atrophy-related ubiquitin ligases MuRF-1 and atrogin-1. Mechanistically, TLR2 deficiency impaired the PI3K/Akt signaling pathway, leading to hyperactivation of the transcription factor Forkhead box protein O1 (FoxO1) and, in turn, to elevated expression of FoxO target genes involved in the regulation of muscle wasting and cell death. AS1842856-mediated chemical inhibition of FoxO1 reduced the expression of the atrophy-related ubiquitin ligases and significantly reversed the adverse cardiac remodeling while improving the contractile functions in the TLR2-KO mice. Interestingly, TLR2 levels decreased in hearts of older mice, and the activation of TLR1/2 signaling improved cardiac functions in these mice. These findings suggest that TLR2 signaling is essential for protecting the heart against aging-associated adverse remodeling and contractile dysfunction in mice.
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Affiliation(s)
- Kondapalli Mrudula Spurthi
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Mohsen Sarikhani
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Sneha Mishra
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Perumal Arumugam Desingu
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Shikha Yadav
- the Department of Biochemistry, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Swathi Rao
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Sangeeta Maity
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Ankit Kumar Tamta
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Shweta Kumar
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Shamik Majumdar
- the Department of Biochemistry, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Aditi Jain
- the Centre for Biosystems Science and Engineering, Indian Institute of Science, Bengaluru, Karnataka 560012, India, and
| | - Aishwarya Raghuraman
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Danish Khan
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Ishwar Singh
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Rosa J Samuel
- the Central Animal Facility, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Subbaraya G Ramachandra
- the Central Animal Facility, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Dipankar Nandi
- the Department of Biochemistry, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Nagalingam R Sundaresan
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, Karnataka 560012, India,
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Essential role for smooth muscle cell stromal interaction molecule-1 in myocardial infarction. J Hypertens 2018; 36:377-386. [PMID: 29611835 DOI: 10.1097/hjh.0000000000001518] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVES Stromal interacting molecule-1 (STIM1) plays a role in coordinating calcium signaling in different cell types. The increase or deletion of STIM1 expression in cardiomyocyte causes cardiac complication. Moreover, the deletion of STIM1 in endothelial cell causes vascular endothelial dysfunction. However, the disruption of STIM1 in smooth muscle cells (SMC) has no effect on endothelial function but protects vascular function when mice are infused with angiotensin-II. Nevertheless, the role of SMC-STIM1 in acute and chronic myocardial infarction (MI) induced by acute ischemia-reperfusion injury and permanent coronary artery occlusion is unknown. METHODS AND RESULTS Stim1 were generated and crossed into the SM22α-Cre backgrounds. SM22α-Cre causes deletion of STIM1 floxed genes in adult SMC (Stim1). Control and Stim1 mice were subjected to acute ischemia-reperfusion injury. Hearts were then harvested and incubated with triphenyltetrazolium chloride to determine the infarct size. In control mice which are subjected to ischemia-reperfusion, the heart developed a significant infarct associated with an increase in STIM1 expression. Interestingly, the infarct size was substantially reduced in Stim1 mice. The protection in Stim1 mice against ischemia-reperfusion injury involves the modulation of endoplasmic reticulum stress, apoptosis, oxidative stress, protein kinase B, and mitogen-activated protein (MAP) kinase (ERK1/2 and p38) signaling, and inflammation. Furthermore, in another model of chronic MI induced by permanent coronary artery occlusion, SMC-STIM1 disruption significantly reduced myocardial infarct size and improved cardiac function. CONCLUSION Our results provide new evidence that SMC-STIM1 disruption is a novel mechanism that protects the heart from MI through reduction of endoplasmic reticulum stress, oxidative stress, MAP-Kinase, apoptosis, and inflammation.
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48
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Becher PM, Hinrichs S, Fluschnik N, Hennigs JK, Klingel K, Blankenberg S, Westermann D, Lindner D. Role of Toll-like receptors and interferon regulatory factors in different experimental heart failure models of diverse etiology: IRF7 as novel cardiovascular stress-inducible factor. PLoS One 2018. [PMID: 29538462 PMCID: PMC5851607 DOI: 10.1371/journal.pone.0193844] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Heart failure (HF) is a leading cause of morbidity and mortality in the western world. Although optimal medical care and treatment is widely available, the prognosis of patients with HF is still poor. Toll-like receptors (TLRs) are important compartments of the innate immunity. Current studies have identified TLRs as critical mediators in cardiovascular diseases. In the present study, we investigated the involvement of TLRs and interferon (IFN) regulatory factors (IRFs) in different experimental HF models including viral myocarditis, myocardial ischemia, diabetes mellitus, and cardiac hypertrophy. In addition, we investigated for the first time comprehensive TLR and IRF gene and protein expression under basal conditions in murine and human cardiac tissue. We found that Tlr4, Tlr9 and Irf7 displayed highest gene expression under basal conditions, indicating their significant role in first-line defense in the murine and human heart. Moreover, induction of TLRs and IRFs clearly differs between the various experimental HF models of diverse etiology and the concomitant inflammatory status. In the HF model of acute viral-induced myocarditis, TLR and IRF activation displayed the uppermost gene expression in comparison to the remaining experimental HF models, indicating the highest amount of myocardial inflammation in myocarditis. In detail, Irf7 displayed by far the highest gene expression during acute viral infection. Interestingly, post myocardial infarction TLR and IRF gene expression was almost exclusively increased in the infarct zone after myocardial ischemia (Tlr2, Tlr3, Tlr6, Tlr7, Tlr9, Irf3, Irf7). With one exception, Irf3 showed a decreased gene expression in the remote zone post infarction. Finally, we identified Irf7 as novel cardiovascular stress-inducible factor in the pathologically stressed heart. These findings on TLR and IRF function in the inflamed heart highlight the complexity of inflammatory immune response and raise more interesting questions for future investigation.
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Affiliation(s)
- Peter Moritz Becher
- Department for General and Interventional Cardiology, University Heart Center Hamburg, Hamburg, Germany
- * E-mail:
| | - Svenja Hinrichs
- Department for General and Interventional Cardiology, University Heart Center Hamburg, Hamburg, Germany
- DZHK (German Center for Cardiovascular Research), partner site Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - Nina Fluschnik
- Department for General and Interventional Cardiology, University Heart Center Hamburg, Hamburg, Germany
| | - Jan K. Hennigs
- Section Pneumology, Department of Medicine II, University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - Karin Klingel
- Cardiopathology, Institute for Pathology and Neuropathology, Eberhard-Karls-University Tübingen, Tübingen, Germany
| | - Stefan Blankenberg
- Department for General and Interventional Cardiology, University Heart Center Hamburg, Hamburg, Germany
- DZHK (German Center for Cardiovascular Research), partner site Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - Dirk Westermann
- Department for General and Interventional Cardiology, University Heart Center Hamburg, Hamburg, Germany
- DZHK (German Center for Cardiovascular Research), partner site Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - Diana Lindner
- Department for General and Interventional Cardiology, University Heart Center Hamburg, Hamburg, Germany
- DZHK (German Center for Cardiovascular Research), partner site Hamburg/Kiel/Lübeck, Hamburg, Germany
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Yang J, Yang C, Yang J, Ding J, Li X, Yu Q, Guo X, Fan Z, Wang H. RP105 alleviates myocardial ischemia reperfusion injury via inhibiting TLR4/TRIF signaling pathways. Int J Mol Med 2018; 41:3287-3295. [PMID: 29512709 PMCID: PMC5881694 DOI: 10.3892/ijmm.2018.3538] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 01/12/2018] [Indexed: 02/06/2023] Open
Abstract
The Toll-like receptor 4 (TLR4) signal pathway- induced inflammation is considered to be a crucial link to myocardial ischemia reperfusion injury (MIRI). Our previous study proved that radioprotective 105 kDa protein (RP105), a negative regulator of TLR4, performed a protective role in MIRI by anti-apoptosis approach. However, the mechanism of RP105 cardioprotection of anti-inflammation is still unclear. This study aimed to explore the underlying mechanism of RP105 anti-inflammation effect in MIRI. We established a rat model of MIRI induced by ligation of the left anterior descending coronary artery for 30 min followed by 2 h reperfusion. Animals were pre-infected with Ad-EGFP-RP105, Ad-EGFP or saline at the apex of the heart. All rats were sacrificed to collect blood samples and myocardial tissue and assessed by immunofluorescence, blood biochemical analysis, Evans blue/triphenyltetrazolium chloride (TTC), hematoxylin and eosin (H&E) staining, enzyme-linked immuno sorbent assay (ELISA), western blot analysis, quantitative PCR and electrophoretic mobility shift assay (EMSA). RP105 overexpression with adenovirus vectors reduced serum myocardial enzyme (CK-MB and LDH) activities, decreased myocardial infarct size, mitigated inflammatory factors interferon-β and tumor necrosis factor-α during MIRI. We also found that Ad-RP105 group exerted distinct repression of TLR4/TRIF signal pathway related proteins and mRNAs (TRIF, TBK-1, IRF3 and p-IRF3) with a low transcriptional activity of IRF3. These findings first expounded that RP105 could alleviate the ischemia reperfusion induced inflammatory status in heart via inhibiting TLR4/TRIF signaling pathway and provided a theoretical foundation of RP105 gene in MIRI.
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Affiliation(s)
- Jun Yang
- Department of Cardiology, The First College of Clinical Medical Sciences, China Three Gorges University, Yichang, Hubei 443000, P.R. China
| | - Chaojun Yang
- Institute of Cardiovascular Diseases, China Three Gorges University, Yichang, Hubei 443000, P.R. China
| | - Jian Yang
- Department of Cardiology, The First College of Clinical Medical Sciences, China Three Gorges University, Yichang, Hubei 443000, P.R. China
| | - Jiawang Ding
- Department of Cardiology, The First College of Clinical Medical Sciences, China Three Gorges University, Yichang, Hubei 443000, P.R. China
| | - Xinxin Li
- Department of Cardiology, The First College of Clinical Medical Sciences, China Three Gorges University, Yichang, Hubei 443000, P.R. China
| | - Qinqin Yu
- Department of Cardiology, The First College of Clinical Medical Sciences, China Three Gorges University, Yichang, Hubei 443000, P.R. China
| | - Xin Guo
- Department of Cardiology, The First College of Clinical Medical Sciences, China Three Gorges University, Yichang, Hubei 443000, P.R. China
| | - Zhixing Fan
- Institute of Cardiovascular Diseases, China Three Gorges University, Yichang, Hubei 443000, P.R. China
| | - Huibo Wang
- Institute of Cardiovascular Diseases, China Three Gorges University, Yichang, Hubei 443000, P.R. China
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50
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Teselkin YO, Khoreva MV, Veselova AV, Babenkova IV, Osipov AN, Gankovskaya LV, Vladimirov YA. TLR-Mediated Production of Reactive Oxygen Species and Tumor Necrosis Factor Alpha by Human Peripheral Blood Neutrophils. Biophysics (Nagoya-shi) 2018. [DOI: 10.1134/s0006350918020227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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