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Banerjee S, Onwunyi VRC, Hong J, Martineau S, Fishbein GA, Bonnet SB, Provencher S, Bonnet S, Umar S. RV-specific Targeting of Snai1 Rescues Pulmonary Hypertension-induced Right Ventricular Failure by Inhibiting EndMT and Fibrosis via LOXL2 Mediated Mechanism. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.30.591766. [PMID: 38746200 PMCID: PMC11092652 DOI: 10.1101/2024.04.30.591766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Background Pulmonary hypertension (PH)-induced right ventricular (RV) failure (PH-RVF) is a significant prognostic determinant of mortality and is characterized by RV hypertrophy, endothelial-to-mesenchymal transition (EndMT), fibroblast-to-myofibroblast transition (FMT), fibrosis, and extracellular matrix (ECM)-remodeling. Despite the importance of RV function in PH, the mechanistic details of PH-RVF, especially the regulatory control of RV EndMT, FMT, and fibrosis, remain unclear. The action of transcription factor Snai1 is shown to be mediated through LOXL2 recruitment, and their co-translocation to the nucleus, during EndMT progression. We hypothesize that RV EndMT and fibrosis in PH-RVF are governed by the TGFβ1-Snai1-LOXL2 axis. Furthermore, targeting Snai1 could serve as a novel therapeutic strategy for PH-RVF. Methods Adult male Sprague Dawley rats (250-300g) received either a single subcutaneous injection of Monocrotaline (MCT, 60mg/kg, n=9; followed for 30-days) or Sugen (SU5416 20mg/kg, n=9; 10% O 2 hypoxia for 3-weeks followed by normoxia for 2-weeks) or PBS (CTRL, n=9). We performed secondary bioinformatics analysis on the RV bulk RNA-Seq data from MCT, SuHx, and PAB rats and human PH-PVF. We validated EndMT and FMT and their association with Snai1 and LOXL2 in the RVs of MCT and SuHx rat models and human PH-RVF using immunofluorescence, qPCR, and Western blots. For in vivo Snai1 knockdown (Snai1-KD), MCT-rats either received Snai1-siRNA (n=7; 5nM/injection every 3-4 days; 4-injections) or scramble (SCRM-KD; n=7) through tail vein from day 14-30 after MCT. Echocardiography and catheterization were performed terminally. Bulk RNASeq and differential expression analysis were performed on Snai1- and SCRM-KD rat RVs. In vitro Snai1-KD was performed on human coronary artery endothelial cells (HCAECs) and human cardiac fibroblasts (HCFs) under hypoxia+TGFβ1 for 72-hrs. Results PH-RVF had increased RVSP and Fulton index and decreased RV fractional area change (RVFAC %). RV RNASeq demonstrated EndMT as the common top-upregulated pathway between rat (MCT, SuHx, and PAB) and human PH-RVF. Immunofluorescence using EndMT- and FMT-specific markers demonstrated increased EndMT and FMT in RV of MCT and SuHx rats and PH-RVF patients. Further, RV expression of TGFβ1, Snai1, and LOXL2 was increased in MCT and SuHx. Nuclear co-localization and increased immunoreactivity, transcript, and protein levels of Snai1 and LOXL2 were observed in MCT and SuHx rats and human RVs. MCT rats treated with Snai1-siRNA demonstrated decreased Snai1 expression, RVSP, Fulton index, and increased RVFAC. Snai1-KD resulted in decreased RV-EndMT, FMT, and fibrosis via a LOXL2-dependent manner. Further, Snai1-KD inhibited hypoxia+TGFβ1-induced EndMT in HCAECs and FMT in HCFs in vitro by decreasing perinuclear/nuclear Snai1+LOXL2 expression and co-localization. Conclusions RV-specific targeting of Snai1 rescues PH-RVF by inhibiting EndMT and Fibrosis via a LOXL2-mediated mechanism.
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Miao H, Hui H, Fan W, Lin Y, Li H, Li D, Luo M, Qiu F, Jiang B, Zhang Y. Overexpressed pigment epithelium-derived factor alleviates pulmonary hypertension in two rat models induced by monocrotaline and SU5416/hypoxia. Biomed Pharmacother 2024; 172:116303. [PMID: 38377738 DOI: 10.1016/j.biopha.2024.116303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 02/16/2024] [Accepted: 02/17/2024] [Indexed: 02/22/2024] Open
Abstract
BACKGROUND Pulmonary hypertension (PH) is a progressive and fatal cardiopulmonary disease characterized by vascular remodeling and is associated with endothelial-to-mesenchymal transition (EndoMT). The pigment epithelium-derived factor (PEDF), a secretory protein widely distributed in multiple organs, has been shown to demonstrate anti-EndoMT activity in cardiovascular diseases. In the present study, the role of PEDF in PH was investigated. METHODS For PEDF overexpression, Sprague Dawley rats were infected with an adeno-associated virus through injection via the internal jugular vein. To establish PH models, the animals were subjected to monocrotaline or Sugen/hypoxia. Four weeks later, pulmonary artery angiography was performed, and hemodynamic parameters, right ventricular function, and vascular remodeling were evaluated. EndoMT and cell proliferation in the pulmonary arteries were assessed via immunofluorescence staining. Moreover, pulmonary artery endothelial cells (PAECs) isolated from experimental PH rats were cultured to investigate the underlying molecular mechanisms involved. RESULTS PEDF expression was significantly downregulated in PAECs from PH patients and PH model rats. Overexpressed PEDF alleviated the development of PH by improving pulmonary artery morphology and perfusion, reducing pulmonary artery pressure, improving right ventricular function, and alleviating vascular remodeling. PEDF inhibits EndoMT and reduces excessive PAEC proliferation. Moreover, PEDF overexpression reduced EndoMT in cultured PAECs by competitively inhibiting the binding of wnt to LRP6 and downregulating phosphorylation at the 1490 site of LRP6. CONCLUSIONS Our findings suggest that PEDF may be a potential therapeutic target for PH. We also found that PEDF can inhibit EndoMT in PAECs and may exert these effects by inhibiting the Wnt/LRP6/β-catenin pathway.
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Affiliation(s)
- Haoran Miao
- Department of Thoracic Cardiovascular Surgery, China
| | - Hongliang Hui
- Department of Thoracic Cardiovascular Surgery, China
| | - Wenbin Fan
- Department of Thoracic Cardiovascular Surgery, China
| | - Yangui Lin
- Department of Thoracic Cardiovascular Surgery, China
| | - Huaming Li
- Department of Thoracic Cardiovascular Surgery, China
| | - Dan Li
- Community Health Center, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Min Luo
- Department of Thoracic Cardiovascular Surgery, China
| | - Fan Qiu
- Department of Thoracic Cardiovascular Surgery, China.
| | - Bo Jiang
- Department of Thoracic Cardiovascular Surgery, China.
| | - Yiqian Zhang
- Department of Thoracic Cardiovascular Surgery, China.
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Mamazhakypov A, Maripov A, Sarybaev AS, Schermuly RT, Sydykov A. Mast Cells in Cardiac Remodeling: Focus on the Right Ventricle. J Cardiovasc Dev Dis 2024; 11:54. [PMID: 38392268 PMCID: PMC10889421 DOI: 10.3390/jcdd11020054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/31/2024] [Accepted: 02/02/2024] [Indexed: 02/24/2024] Open
Abstract
In response to various stressors, cardiac chambers undergo structural remodeling. Long-term exposure of the right ventricle (RV) to pressure or volume overload leads to its maladaptive remodeling, associated with RV failure and increased mortality. While left ventricular adverse remodeling is well understood and therapeutic options are available or emerging, RV remodeling remains underexplored, and no specific therapies are currently available. Accumulating evidence implicates the role of mast cells in RV remodeling. Mast cells produce and release numerous inflammatory mediators, growth factors and proteases that can adversely affect cardiac cells, thus contributing to cardiac remodeling. Recent experimental findings suggest that mast cells might represent a potential therapeutic target. This review examines the role of mast cells in cardiac remodeling, with a specific focus on RV remodeling, and explores the potential efficacy of therapeutic interventions targeting mast cells to mitigate adverse RV remodeling.
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Affiliation(s)
- Argen Mamazhakypov
- Department of Internal Medicine, Excellence Cluster Cardio-Pulmonary Institute (CPI), Member of the German Center for Lung Research (DZL), Justus Liebig University of Giessen, 35392 Giessen, Germany
| | - Abdirashit Maripov
- Department of Mountain and Sleep Medicine and Pulmonary Hypertension, National Center of Cardiology and Internal Medicine, Bishkek 720040, Kyrgyzstan
| | - Akpay S Sarybaev
- Department of Mountain and Sleep Medicine and Pulmonary Hypertension, National Center of Cardiology and Internal Medicine, Bishkek 720040, Kyrgyzstan
| | - Ralph Theo Schermuly
- Department of Internal Medicine, Excellence Cluster Cardio-Pulmonary Institute (CPI), Member of the German Center for Lung Research (DZL), Justus Liebig University of Giessen, 35392 Giessen, Germany
| | - Akylbek Sydykov
- Department of Internal Medicine, Excellence Cluster Cardio-Pulmonary Institute (CPI), Member of the German Center for Lung Research (DZL), Justus Liebig University of Giessen, 35392 Giessen, Germany
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Che Y, Xia T, Liu H, Li C, Liu S, Ma P, Xu Q, Zhou R. Preparation of betaine injection and its therapeutic effect in pulmonary arterial hypertension. Basic Clin Pharmacol Toxicol 2024; 134:219-230. [PMID: 38009574 DOI: 10.1111/bcpt.13966] [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: 03/26/2023] [Revised: 10/31/2023] [Accepted: 11/21/2023] [Indexed: 11/29/2023]
Abstract
Pulmonary arterial hypertension (PAH) is a life-threatening disease characterised by elevated pulmonary pressure, right ventricular failure (RVF) and ultimately death. Aggressive treatment of RVF is considered an important therapeutic strategy to treat PAH. Previous studies have indicated that betaine may be may a promising therapeutic approach for PAH-induced RVF. Therefore, in this study, betaine solution for injection was prepared and characterised using various techniques. The therapeutic efficacy of three different methods of administration (intragastric, nebulised inhalation and intravenous injection) were comprehensively evaluated in terms of pharmacokinetics, tissue distribution and pharmacodynamics. The pharmacokinetic results demonstrated that betaine injection administered via nebulised inhalation significantly prolonged betaine's half-life and increased its internal circulation time compared to the intragastric and intravenous routes. Biodistribution experiments verified that the betaine formulation accumulated in the lung tissue when administered via inhalation. The results of the pharmacodynamic analysis further confirmed that right ventricular systolic pressure, mean pulmonary artery pressure and right ventricular hypertrophy index increased in the model group and that inhaled betaine suppressed these pathological changes to a level comparable to those observed in the control group. Taken together, these results indicate that betaine administered by inhalation is a promising strategy for the treatment of PAH-induced RVF.
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Affiliation(s)
- Youlan Che
- Department of Pharmacology, College of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia, China
| | - Tian Xia
- Department of Pharmacology, College of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia, China
| | - Hui Liu
- Department of Pharmacology, College of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia, China
| | - Cong Li
- Department of Pharmacology, College of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia, China
| | - Siyun Liu
- Department of Pharmacology, College of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia, China
| | - Ping Ma
- General Hospital of Ningxia Medical University, Yinchuan, Ningxia, China
| | - Qingbin Xu
- General Hospital of Ningxia Medical University, Yinchuan, Ningxia, China
| | - Ru Zhou
- Department of Pharmacology, College of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia, China
- Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education, Ningxia Medical University, Yinchuan, Ningxia, China
- NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Ningxia Medical University, Yinchuan, China
- Ningxia Characteristic Traditional Chinese Medicine Modernization Engineering Technology Research Center, Ningxia Medical University, Yinchuan, Ningxia, China
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Mendelson JB, Sternbach JD, Doyle MJ, Mills L, Hartweck LM, Tollison W, Carney JP, Lahti MT, Bianco RW, Kalra R, Kazmirczak F, Hindmarch C, Archer SL, Prins KW, Martin CM. Multi-omic and multispecies analysis of right ventricular dysfunction. J Heart Lung Transplant 2024; 43:303-313. [PMID: 37783299 PMCID: PMC10841898 DOI: 10.1016/j.healun.2023.09.020] [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: 04/07/2023] [Revised: 09/14/2023] [Accepted: 09/28/2023] [Indexed: 10/04/2023] Open
Abstract
BACKGROUND Right ventricular failure (RVF) is a leading cause of morbidity and mortality in multiple cardiovascular diseases, but there are no treatments for RVF as therapeutic targets are not clearly defined. Contemporary transcriptomic/proteomic evaluations of RVF are predominately conducted in small animal studies, and data from large animal models are sparse. Moreover, a comparison of the molecular mediators of RVF across species is lacking. METHODS Transcriptomics and proteomics analyses defined the pathways associated with cardiac magnetic resonance imaging (MRI)-derived values of RV hypertrophy, dilation, and dysfunction in control and pulmonary artery banded (PAB) pigs. Publicly available data from rat monocrotaline-induced RVF and pulmonary arterial hypertension patients with preserved or impaired RV function were used to compare molecular responses across species. RESULTS PAB pigs displayed significant right ventricle/ventricular (RV) hypertrophy, dilation, and dysfunction as quantified by cardiac magnetic resonance imaging. Transcriptomic and proteomic analyses identified pathways associated with RV dysfunction and remodeling in PAB pigs. Surprisingly, disruptions in fatty acid oxidation (FAO) and electron transport chain (ETC) proteins were different across the 3 species. FAO and ETC proteins and transcripts were mostly downregulated in rats but were predominately upregulated in PAB pigs, which more closely matched the human response. All species exhibited similar dysregulation of the dilated cardiomyopathy and arrhythmogenic right ventricular cardiomyopathy pathways. CONCLUSIONS The porcine metabolic molecular signature was more similar to human RVF than rodents. These data suggest there may be divergent molecular responses of RVF across species, and pigs may more accurately recapitulate metabolic aspects of human RVF.
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Affiliation(s)
- Jenna B Mendelson
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, Minnesota
| | - Jacob D Sternbach
- Department of Medicine, Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota
| | - Michelle J Doyle
- Department of Medicine, Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota
| | - Lauren Mills
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Lynn M Hartweck
- Department of Medicine, Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota
| | - Walt Tollison
- Department of Surgery, Experimental Surgical Services Laboratory, University of Minnesota, Minneapolis, Minnesota
| | - John P Carney
- Department of Surgery, Experimental Surgical Services Laboratory, University of Minnesota, Minneapolis, Minnesota
| | - Matthew T Lahti
- Department of Surgery, Experimental Surgical Services Laboratory, University of Minnesota, Minneapolis, Minnesota
| | - Richard W Bianco
- Department of Surgery, Experimental Surgical Services Laboratory, University of Minnesota, Minneapolis, Minnesota
| | - Rajat Kalra
- Cardiovascular Division, Department of Medicine, University of Minnesota, Minneapolis, Minnesota
| | - Felipe Kazmirczak
- Cardiovascular Division, Department of Medicine, University of Minnesota, Minneapolis, Minnesota
| | - Charles Hindmarch
- Queen's Cardiopulmonary Unit, Department of Medicine, Queen's University, Kingston, Ontario, Canada
| | - Stephen L Archer
- Queen's Cardiopulmonary Unit, Department of Medicine, Queen's University, Kingston, Ontario, Canada
| | - Kurt W Prins
- Department of Medicine, Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota; Cardiovascular Division, Department of Medicine, University of Minnesota, Minneapolis, Minnesota.
| | - Cindy M Martin
- DeBakey Heart and Vascular Center, Houston Methodist, Houston, Texas
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Abd Alla J, Langer A, Wolf S, Fu X, Rageh MA, Quitterer U. BBLN triggers CAMK2D pathology in mice under cardiac pressure overload and potentially in unrepaired hearts with tetralogy of Fallot. NATURE CARDIOVASCULAR RESEARCH 2023; 2:1044-1059. [PMID: 38666071 PMCID: PMC11041739 DOI: 10.1038/s44161-023-00351-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 09/21/2023] [Indexed: 04/28/2024]
Abstract
Tetralogy of Fallot (TOF) is one of the most prevalent congenital heart defects, with adverse cardiac remodeling and long-term cardiac complications. Here, searching for pathomechanisms, we find upregulated bublin coiled-coil protein (BBLN) in heart specimens of TOF patients with cyanosis, which positively correlates with cardiac remodeling pathways. Human BBLN, a protein with largely unknown function, promoted heart failure features, with increased mortality when overexpressed in mice, in a protein dosage-dependent manner. BBLN enhanced cardiac inflammation, fibrosis and necroptosis by calcium/calmodulin-dependent protein kinase II delta (CAMK2D) activation, whereas a BBLN mutant with impaired CAMK2D binding was inert. Downregulation of CAMK2D by an interfering RNA retarded BBLN-induced symptoms of heart failure. Endogenous BBLN was induced by hypoxia as a major TOF feature in human patients and by chronic pressure overload in mice, and its downregulation decreased CAMK2D hyperactivity, necroptosis and cardiovascular dysfunction. Thus, BBLN promotes CAMK2D-induced pathways to pathological cardiac remodeling, which are triggered by hypoxia in TOF.
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Affiliation(s)
- Joshua Abd Alla
- Molecular Pharmacology, Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Andreas Langer
- Molecular Pharmacology, Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Stefan Wolf
- Molecular Pharmacology, Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Xuebin Fu
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL USA
- Department of Cardiovascular–Thoracic Surgery, Ann & Robert H. Lurie Children’s Hospital, Chicago, IL USA
| | - Mohamed Abdelfattah Rageh
- Ain Shams University Hospitals, Cairo, Egypt
- Present Address: Dalhousie University of Canada, Halifax, Nova Scotia Canada
| | - Ursula Quitterer
- Molecular Pharmacology, Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
- Department of Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland
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Kheyfets VO, Kumar S, Heerdt PM, Ichimura K, Brown RD, Lucero M, Essafri I, Williams S, Stenmark KR, Spiekerkoetter E. Characterizing the Spatiotemporal Transcriptomic Response of the Right Ventricle to Acute Pressure Overload. Int J Mol Sci 2023; 24:9746. [PMID: 37298696 PMCID: PMC10253685 DOI: 10.3390/ijms24119746] [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: 03/24/2023] [Revised: 05/22/2023] [Accepted: 05/26/2023] [Indexed: 06/12/2023] Open
Abstract
This study analyzed microarray data of right ventricular (RV) tissue from rats exposed to pulmonary embolism to understand the initial dynamic transcriptional response to mechanical stress and compare it with experimental pulmonary hypertension (PH) models. The dataset included samples harvested from 55 rats at 11 different time points or RV locations. We performed principal component analysis (PCA) to explore clusters based on spatiotemporal gene expression. Relevant pathways were identified from fast gene set enrichment analysis using PCA coefficients. The RV transcriptomic signature was measured over several time points, ranging from hours to weeks after an acute increase in mechanical stress, and was found to be highly dependent on the severity of the initial insult. Pathways enriched in the RV outflow tracts of rats at 6 weeks after severe PE share many commonalities with experimental PH models, but the transcriptomic signature at the RV apex resembles control tissue. The severity of the initial pressure overload determines the trajectory of the transcriptomic response independent of the final afterload, but this depends on the location where the tissue is biopsied. Chronic RV pressure overload due to PH appears to progress toward similar transcriptomic endpoints.
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Affiliation(s)
- Vitaly O. Kheyfets
- Paediatric Critical Care Medicine, Developmental Lung Biology and CVP Research Laboratories, School of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Sushil Kumar
- Paediatric Critical Care Medicine, Developmental Lung Biology and CVP Research Laboratories, School of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Paul M. Heerdt
- Department of Anaesthesiology, Applied Hemodynamic, Yale School of Medicine, New Haven, CT 06510, USA
| | - Kenzo Ichimura
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford University, Stanford, CA 94305, USA
- Division of Pulmonary, Allergy and Critical Care Medicine, Stanford School of Medicine, Stanford University, Stanford, CA 94305, USA
| | - R. Dale Brown
- Paediatric Critical Care Medicine, Developmental Lung Biology and CVP Research Laboratories, School of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Melissa Lucero
- Paediatric Critical Care Medicine, Developmental Lung Biology and CVP Research Laboratories, School of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Ilham Essafri
- Paediatric Critical Care Medicine, Developmental Lung Biology and CVP Research Laboratories, School of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Sarah Williams
- Queensland Facility for Advanced Bioinformatics, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Kurt R. Stenmark
- Paediatric Critical Care Medicine, Developmental Lung Biology and CVP Research Laboratories, School of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Edda Spiekerkoetter
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford University, Stanford, CA 94305, USA
- Division of Pulmonary, Allergy and Critical Care Medicine, Stanford School of Medicine, Stanford University, Stanford, CA 94305, USA
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Razee A, Banerjee S, Hong J, Magaki S, Fishbein G, Ajijola OA, Umar S. Thoracic Spinal Cord Neuroinflammation as a Novel Therapeutic Target in Pulmonary Hypertension. Hypertension 2023; 80:1297-1310. [PMID: 37092338 PMCID: PMC10192067 DOI: 10.1161/hypertensionaha.122.20782] [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: 12/09/2022] [Accepted: 04/03/2023] [Indexed: 04/25/2023]
Abstract
BACKGROUND Pulmonary hypertension (PH) is associated with aberrant sympathoexcitation leading to right ventricular failure (RVF), arrhythmias, and death. Microglial activation and neuroinflammation have been implicated in sympathoexcitation in experimental PH. We recently reported the first evidence of thoracic spinal cord (TSC) neuroinflammation in PH rats. Here, we hypothesize that PH is associated with increased cardiopulmonary afferent signaling leading to TSC-specific neuroinflammation and sympathoexcitation. Furthermore, inhibition of TSC neuroinflammation rescues experimental PH and RVF. METHODS We performed transcriptomic analysis and its validation on the TSC of monocrotaline (n=8) and Sugen hypoxia (n=8) rat models of severe PH-RVF. A group of monocrotaline rats received either daily intrathecal microglial activation inhibitor minocycline (200 μg/kg per day, n=5) or PBS (n=5) from day 14 through 28. Echocardiography and right ventricle-catheterization were performed terminally. Real-time quantitative reverse transcription PCR, immunolocalization, microglia+astrocyte quantification, and terminal deoxynucleotidyl transferase dUTP nick end labeling were assessed. Plasma catecholamines were measured by ELISA. Human spinal cord autopsy samples (Control n=3; pulmonary arterial hypertension n=3) were assessed to validate preclinical findings. RESULTS Increased cardiopulmonary afferent signaling was demonstrated in preclinical and clinical PH. Our findings delineated common dysregulated genes and pathways highlighting neuroinflammation and apoptosis in the remodeled TSC and highlighted increased sympathoexcitation in both rat models. Moreover, we validated significantly increased microglial and astrocytic activation and CX3CL1 expression in TSC of human pulmonary arterial hypertension. Finally, amelioration of TSC neuroinflammation by minocycline in monocrotaline rats inhibited microglial activation, decreased proinflammatory cytokines, sympathetic nervous system activation and significantly attenuated PH and RVF. CONCLUSIONS Targeting neuroinflammation and associated molecular pathways and genes in the TSC may yield novel therapeutic strategies for PH and RVF.
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Affiliation(s)
- Asif Razee
- Department of Anesthesiology and Perioperative Medicine Division of Molecular Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Somanshu Banerjee
- Department of Anesthesiology and Perioperative Medicine Division of Molecular Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Jason Hong
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Los Angeles, CA, USA
| | - Shino Magaki
- Department of Pathology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Greg Fishbein
- Department of Pathology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Olujimi A. Ajijola
- UCLA Cardiac Arrhythmia Center and Neurocardiology Research Program of Excellence, Los Angeles, CA, USA
| | - Soban Umar
- Department of Anesthesiology and Perioperative Medicine Division of Molecular Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
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Mamazhakypov A, Maripov A, Sarybaev AS, Schermuly RT, Sydykov A. Osteopontin in Pulmonary Hypertension. Biomedicines 2023; 11:biomedicines11051385. [PMID: 37239056 DOI: 10.3390/biomedicines11051385] [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: 03/28/2023] [Revised: 05/01/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023] Open
Abstract
Pulmonary hypertension (PH) is a pathological condition with multifactorial etiology, which is characterized by elevated pulmonary arterial pressure and pulmonary vascular remodeling. The underlying pathogenetic mechanisms remain poorly understood. Accumulating clinical evidence suggests that circulating osteopontin may serve as a biomarker of PH progression, severity, and prognosis, as well as an indicator of maladaptive right ventricular remodeling and dysfunction. Moreover, preclinical studies in rodent models have implicated osteopontin in PH pathogenesis. Osteopontin modulates a plethora of cellular processes within the pulmonary vasculature, including cell proliferation, migration, apoptosis, extracellular matrix synthesis, and inflammation via binding to various receptors such as integrins and CD44. In this article, we provide a comprehensive overview of the current understanding of osteopontin regulation and its impact on pulmonary vascular remodeling, as well as consider research issues required for the development of therapeutics targeting osteopontin as a potential strategy for the management of PH.
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Affiliation(s)
- Argen Mamazhakypov
- Department of Internal Medicine, Excellence Cluster Cardio-Pulmonary Institute (CPI), Member of the German Center for Lung Research (DZL), Justus Liebig University of Giessen, 35392 Giessen, Germany
| | - Abdirashit Maripov
- Department of Mountain and Sleep Medicine and Pulmonary Hypertension, National Center of Cardiology and Internal Medicine, Bishkek 720040, Kyrgyzstan
| | - Akpay S Sarybaev
- Department of Mountain and Sleep Medicine and Pulmonary Hypertension, National Center of Cardiology and Internal Medicine, Bishkek 720040, Kyrgyzstan
| | - Ralph Theo Schermuly
- Department of Internal Medicine, Excellence Cluster Cardio-Pulmonary Institute (CPI), Member of the German Center for Lung Research (DZL), Justus Liebig University of Giessen, 35392 Giessen, Germany
| | - Akylbek Sydykov
- Department of Internal Medicine, Excellence Cluster Cardio-Pulmonary Institute (CPI), Member of the German Center for Lung Research (DZL), Justus Liebig University of Giessen, 35392 Giessen, Germany
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10
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Bekedam FT, Goumans MJ, Bogaard HJ, de Man FS, Llucià-Valldeperas A. Molecular mechanisms and targets of right ventricular fibrosis in pulmonary hypertension. Pharmacol Ther 2023; 244:108389. [PMID: 36940790 DOI: 10.1016/j.pharmthera.2023.108389] [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: 11/29/2022] [Revised: 02/19/2023] [Accepted: 03/16/2023] [Indexed: 03/23/2023]
Abstract
Right ventricular fibrosis is a stress response, predominantly mediated by cardiac fibroblasts. This cell population is sensitive to increased levels of pro-inflammatory cytokines, pro-fibrotic growth factors and mechanical stimulation. Activation of fibroblasts results in the induction of various molecular signaling pathways, most notably the mitogen-activated protein kinase cassettes, leading to increased synthesis and remodeling of the extracellular matrix. While fibrosis confers structural protection in response to damage induced by ischemia or (pressure and volume) overload, it simultaneously contributes to increased myocardial stiffness and right ventricular dysfunction. Here, we review state-of-the-art knowledge of the development of right ventricular fibrosis in response to pressure overload and provide an overview of all published preclinical and clinical studies in which right ventricular fibrosis was targeted to improve cardiac function.
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Affiliation(s)
- F T Bekedam
- Amsterdam UMC location Vrije Universiteit Amsterdam, PHEniX laboratory, Department of Pulmonary Medicine, De Boelelaan 1117, Amsterdam, the Netherlands; Amsterdam Cardiovascular Sciences, Pulmonary Hypertension and Thrombosis, Amsterdam, the Netherlands
| | - M J Goumans
- Department of Cell and Chemical Biology, Leiden UMC, 2300 RC Leiden, the Netherlands
| | - H J Bogaard
- Amsterdam UMC location Vrije Universiteit Amsterdam, PHEniX laboratory, Department of Pulmonary Medicine, De Boelelaan 1117, Amsterdam, the Netherlands; Amsterdam Cardiovascular Sciences, Pulmonary Hypertension and Thrombosis, Amsterdam, the Netherlands
| | - F S de Man
- Amsterdam UMC location Vrije Universiteit Amsterdam, PHEniX laboratory, Department of Pulmonary Medicine, De Boelelaan 1117, Amsterdam, the Netherlands; Amsterdam Cardiovascular Sciences, Pulmonary Hypertension and Thrombosis, Amsterdam, the Netherlands.
| | - A Llucià-Valldeperas
- Amsterdam UMC location Vrije Universiteit Amsterdam, PHEniX laboratory, Department of Pulmonary Medicine, De Boelelaan 1117, Amsterdam, the Netherlands; Amsterdam Cardiovascular Sciences, Pulmonary Hypertension and Thrombosis, Amsterdam, the Netherlands.
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11
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Electrical Remodeling in Right Ventricular Failure Due to Pulmonary Hypertension: Unraveling Novel Therapeutic Targets. Int J Mol Sci 2023; 24:ijms24054633. [PMID: 36902065 PMCID: PMC10003421 DOI: 10.3390/ijms24054633] [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: 01/21/2023] [Revised: 02/23/2023] [Accepted: 02/25/2023] [Indexed: 03/05/2023] Open
Abstract
Arrhythmias in the setting of right-ventricular (RV) remodeling contribute to majority of deaths in patients with pulmonary hypertension. However, the underlying mechanism of electrical remodeling remains elusive, especially ventricular arrhythmias. Here, we analyzed the RV transcriptome of pulmonary arterial hypertension (PAH) patients with compensated RV or decompensated RV and identified 8 and 45 differentially expressed genes known to be involved in regulating the electrophysiological properties of excitation and contraction of cardiac myocytes, respectively. Transcripts encoding voltage-gated Ca2+ and Na+ channels were notably decreased in PAH patients with decompensated RV, along with significant dysregulation of KV and Kir channels. We further showed similarity of the RV channelome signature with two well-known animal models of PAH, monocrotaline (MCT)- and Sugen-hypoxia (SuHx)-treated rats. We identified 15 common transcripts among MCT, SuHx, and PAH patients with decompensated RV failure. In addition, data-driven drug repurposing using the channelome signature of PAH patients with decompensated RV failure predicted drug candidates that may reverse the altered gene expression. Comparative analysis provided further insight into clinical relevance and potential preclinical therapeutic studies targeting mechanisms involved in arrhythmogenesis.
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12
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Mendelson JB, Sternbach JD, Doyle MJ, Mills L, Hartweck LM, Tollison W, Carney JP, Lahti MT, Bianco RW, Kalra R, Kazmirczak F, Hindmarch C, Archer SL, Prins KW, Martin CM. A Multi-omic and Multi-Species Analysis of Right Ventricular Failure. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.08.527661. [PMID: 36798212 PMCID: PMC9934613 DOI: 10.1101/2023.02.08.527661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Right ventricular failure (RVF) is a leading cause of morbidity and mortality in multiple cardiovascular diseases, but there are no approved treatments for RVF as therapeutic targets are not clearly defined. Contemporary transcriptomic/proteomic evaluations of RVF are predominately conducted in small animal studies, and data from large animal models are sparse. Moreover, a comparison of the molecular mediators of RVF across species is lacking. Here, we used transcriptomics and proteomics analyses to define the molecular pathways associated with cardiac MRI-derived values of RV hypertrophy, dilation, and dysfunction in pulmonary artery banded (PAB) piglets. Publicly available data from rat monocrotaline-induced RVF and pulmonary arterial hypertension patients with preserved or impaired RV function were used to compare the three species. Transcriptomic and proteomic analyses identified multiple pathways that were associated with RV dysfunction and remodeling in PAB pigs. Surprisingly, disruptions in fatty acid oxidation (FAO) and electron transport chain (ETC) proteins were different across the three species. FAO and ETC proteins and transcripts were mostly downregulated in rats, but were predominately upregulated in PAB pigs, which more closely matched the human data. Thus, the pig PAB metabolic molecular signature was more similar to human RVF than rodents. These data suggest there may be divergent molecular responses of RVF across species, and that pigs more accurately recapitulate the metabolic aspects of human RVF.
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13
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Hindmarch CCT, Tian L, Xiong PY, Potus F, Bentley RET, Al-Qazazi R, Prins KW, Archer SL. An integrated proteomic and transcriptomic signature of the failing right ventricle in monocrotaline induced pulmonary arterial hypertension in male rats. Front Physiol 2022; 13:966454. [PMID: 36388115 PMCID: PMC9664166 DOI: 10.3389/fphys.2022.966454] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 08/19/2022] [Indexed: 01/25/2023] Open
Abstract
Aim: Pulmonary arterial hypertension (PAH) is an obstructive pulmonary vasculopathy that results in death from right ventricular failure (RVF). There is limited understanding of the molecular mechanisms of RVF in PAH. Methods: In a PAH-RVF model induced by injection of adult male rats with monocrotaline (MCT; 60 mg/kg), we performed mass spectrometry to identify proteins that change in the RV as a consequence of PAH induced RVF. Bioinformatic analysis was used to integrate our previously published RNA sequencing data from an independent cohort of PAH rats. Results: We identified 1,277 differentially regulated proteins in the RV of MCT rats compared to controls. Integration of MCT RV transcriptome and proteome data sets identified 410 targets that are concordantly regulated at the mRNA and protein levels. Functional analysis of these data revealed enriched functions, including mitochondrial metabolism, cellular respiration, and purine metabolism. We also prioritized 15 highly enriched protein:transcript pairs and confirmed their biological plausibility as contributors to RVF. We demonstrated an overlap of these differentially expressed pairs with data published by independent investigators using multiple PAH models, including the male SU5416-hypoxia model and several male rat strains. Conclusion: Multiomic integration provides a novel view of the molecular phenotype of RVF in PAH which includes dysregulation of pathways involving purine metabolism, mitochondrial function, inflammation, and fibrosis.
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Affiliation(s)
- Charles Colin Thomas Hindmarch
- QCPU, Queen’s Cardiopulmonary Unit, Translational Institute of Medicine (TIME), Department of Medicine, Queen’s University, Kingston, ON, Canada
| | - Lian Tian
- Department of Medicine, Queen’s University, Kingston, ON, Canada
| | - Ping Yu Xiong
- Department of Medicine, Queen’s University, Kingston, ON, Canada
| | - Francois Potus
- Pulmonary Hypertension Research Group, Centre de Recherche de l’Institut Universitaire de Cardiologie et Pneumologie de Quebec, Quebec City, QC, Canada
| | | | - Ruaa Al-Qazazi
- Department of Medicine, Queen’s University, Kingston, ON, Canada
| | - Kurt W. Prins
- Cardiovascular Division, Lillehei Heart Institute, Department of Medicine, University of Minnesota, Minneapolis, MN, United States
| | - Stephen L. Archer
- QCPU, Queen’s Cardiopulmonary Unit, Translational Institute of Medicine (TIME), Department of Medicine, Queen’s University, Kingston, ON, Canada,Department of Medicine, Queen’s University, Kingston, ON, Canada,*Correspondence: Stephen L. Archer,
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14
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Li Y, Zhang W, Dai Y, Chen K. Identification and verification of IGFBP3 and YTHDC1 as biomarkers associated with immune infiltration and mitophagy in hypertrophic cardiomyopathy. Front Genet 2022; 13:986995. [PMID: 36267414 PMCID: PMC9577180 DOI: 10.3389/fgene.2022.986995] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 09/20/2022] [Indexed: 11/27/2022] Open
Abstract
Background: Hypertrophic cardiomyopathy (HCM) is the main cause of sudden cardiac death among young adults, yet its pathogenesis remains vague. N6-methyladenosine (m6A) methylation modification was involved in various cardiovascular diseases such as coronary heart disease and heart failure, although its influence on HCM remains unclear. This study aimed to explore the potential role of m6A in the diagnosis and pathogenesis of HCM. Methods: GSE36961 including 106 HCM and 39 controls was used in the study. The HCM-related m6A regulators were selected using support vector machine recursive feature elimination and random forest algorithm. A significant gene signature was then established using least absolute shrinkage and selection operator and then verified by GSE130036. Subgroup classification of HCM was performed based on the expression of m6A biomarkers. Gene set variation analysis was employed to explore the functional difference between distinct subgroups. Weighted gene co-expression network analysis was used to determine the m6A-related hub module. Single-sample gene set enrichment analysis was conducted to assess the immune and mitophagy features between subgroups. Besides, transfection of recombinant plasmids with targeted genes into H9c2 cells was performed to further verify the function of the significant biomarkers. Results: Significant difference existed in m6A landscape between HCM and control patients, among which IGFBP3 and YTHDC1 were identified as the independent biomarkers of HCM. Highly infiltrated immune cells (MDSC, macrophages, etc.), more enriched immune-related pathways (TNFα signaling via NFκB and IL6-JAK-STAT3 signaling) and cardiac remodeling-associated pathways (epithelial mesenchymal transition, angiogenesis, etc.) were identified in the subgroup with higher IGFBP3. Consistently, overexpression of IGFBP3 in H9c2 cells led to upregulation of extracellular-matrix-related genes (COL1A2, COL3A1 and MMP9) and inflammation-related genes (TNFα and IL6). Besides, higher YTHDC1 expression seemed to be consistent with less-activated mitophagy (PINK1-PRKN mediated mitophagy) and energy metabolism. Further experiments demonstrated that overexpression of YTHDC1 resulted in up-regulation of PINK and PRKN in cardiomyocytes, which are essential genes mediating mitophagy. Conclusion: Two m6A readers (IGFBP3 and YTHDC1) well distinguished HCM and may facilitate clinical diagnosis. IGFBP3 may play a role in the immune-microenvironments and remodeling of cardiac tissues, while YTHDC1 may influence mitophagy and energy metabolism in HCM.
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Affiliation(s)
- Yao Li
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wei Zhang
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Yan Dai
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- *Correspondence: Yan Dai, ; Keping Chen,
| | - Keping Chen
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- *Correspondence: Yan Dai, ; Keping Chen,
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15
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Banerjee S, Hong J, Umar S. Comparative analysis of right ventricular metabolic reprogramming in pre-clinical rat models of severe pulmonary hypertension-induced right ventricular failure. Front Cardiovasc Med 2022; 9:935423. [PMID: 36158812 PMCID: PMC9500217 DOI: 10.3389/fcvm.2022.935423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 08/25/2022] [Indexed: 12/14/2022] Open
Abstract
Background Pulmonary hypertension (PH) leads to right ventricular (RV) hypertrophy and failure (RVF). The precise mechanisms of the metabolic basis of maladaptive PH-induced RVF (PH-RVF) are yet to be fully elucidated. Here we performed a comparative analysis of RV-metabolic reprogramming in MCT and Su/Hx rat models of severe PH-RVF using targeted metabolomics and multi-omics. Methods Male Sprague Dawley rats (250–300 gm; n = 15) were used. Rats received subcutaneous monocrotaline (60 mg/kg; MCT; n = 5) and followed for ~30-days or Sugen (20 mg/kg; Su/Hx; n = 5) followed by hypoxia (10% O2; 3-weeks) and normoxia (2-weeks). Controls received saline (Control; n = 5). Serial echocardiography was performed to assess cardiopulmonary hemodynamics. Terminal RV-catheterization was performed to assess PH. Targeted metabolomics was performed on RV tissue using UPLC-MS. RV multi-omics analysis was performed integrating metabolomic and transcriptomic datasets using Joint Pathway Analysis (JPA). Results MCT and Su/Hx rats developed severe PH, RV-hypertrophy and decompensated RVF. Targeted metabolomics of RV of MCT and Su/Hx rats detected 126 and 125 metabolites, respectively. There were 28 and 24 metabolites significantly altered in RV of MCT and Su/Hx rats, respectively, including 11 common metabolites. Common significantly upregulated metabolites included aspartate and GSH, whereas downregulated metabolites included phosphate, α-ketoglutarate, inositol, glutamine, 5-Oxoproline, hexose phosphate, creatine, pantothenic acid and acetylcarnitine. JPA highlighted common genes and metabolites from key pathways such as glycolysis, fatty acid metabolism, oxidative phosphorylation, TCA cycle, etc. Conclusions Comparative analysis of metabolic reprogramming of RV from MCT and Su/Hx rats reveals common and distinct metabolic signatures which may serve as RV-specific novel therapeutic targets for PH-RVF.
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Affiliation(s)
- Somanshu Banerjee
- Division of Molecular Medicine, Department of Anesthesiology and Perioperative Medicine, Los Angeles, CA, United States
| | - Jason Hong
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, David Geffen School of Medicine, University of California Los Angeles (UCLA), Los Angeles, CA, United States
| | - Soban Umar
- Division of Molecular Medicine, Department of Anesthesiology and Perioperative Medicine, Los Angeles, CA, United States
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16
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Park J, Banerjee S, Hong J, Umar S. Response by Park et al to Letter Regarding Article, "Transcriptomic Analysis of Right Ventricular Remodeling in Two Rat Models of Pulmonary Hypertension: Identification and Validation of Epithelial-to-Mesenchymal Transition in Human Right Ventricular Failure". Circ Heart Fail 2022; 15:e008632. [PMID: 35766030 DOI: 10.1161/circheartfailure.122.008632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- John Park
- Department of Anesthesiology and Perioperative Medicine, Division of Molecular Medicine (J.P., S.B., S.U.), David Geffen School of Medicine, University of California, Los Angeles
| | - Somanshu Banerjee
- Department of Anesthesiology and Perioperative Medicine, Division of Molecular Medicine (J.P., S.B., S.U.), David Geffen School of Medicine, University of California, Los Angeles
| | - Jason Hong
- Department of Medicine, Division of Pulmonary and Critical Care Medicine (J.H.), David Geffen School of Medicine, University of California, Los Angeles
| | - Soban Umar
- Department of Anesthesiology and Perioperative Medicine, Division of Molecular Medicine (J.P., S.B., S.U.), David Geffen School of Medicine, University of California, Los Angeles
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17
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Deng L, Han X, Wang Z, Nie X, Bian J. The Landscape of Noncoding RNA in Pulmonary Hypertension. Biomolecules 2022; 12:biom12060796. [PMID: 35740920 PMCID: PMC9220981 DOI: 10.3390/biom12060796] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/31/2022] [Accepted: 06/02/2022] [Indexed: 02/08/2023] Open
Abstract
The transcriptome of pulmonary hypertension (PH) is complex and highly genetically heterogeneous, with noncoding RNA transcripts playing crucial roles. The majority of RNAs in the noncoding transcriptome are long noncoding RNAs (lncRNAs) with less circular RNAs (circRNAs), which are two characteristics gaining increasing attention in the forefront of RNA research field. These noncoding transcripts (especially lncRNAs and circRNAs) exert important regulatory functions in PH and emerge as potential disease biomarkers and therapeutic targets. Recent technological advancements have established great momentum for discovery and functional characterization of ncRNAs, which include broad transcriptome sequencing such as bulk RNA-sequence, single-cell and spatial transcriptomics, and RNA-protein/RNA interactions. In this review, we summarize the current research on the classification, biogenesis, and the biological functions and molecular mechanisms of these noncoding RNAs (ncRNAs) involved in the pulmonary vascular remodeling in PH. Furthermore, we highlight the utility and challenges of using these ncRNAs as biomarkers and therapeutics in PH.
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Affiliation(s)
- Lin Deng
- Department of Pharmacology, School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China; (L.D.); (Z.W.)
| | - Xiaofeng Han
- Department of Diagnostic and Interventional Radiology, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China;
| | - Ziping Wang
- Department of Pharmacology, School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China; (L.D.); (Z.W.)
| | - Xiaowei Nie
- Shenzhen Key Laboratory of Respiratory Diseases, Shenzhen People’s Hospital (The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518055, China
- Correspondence: (X.N.); (J.B.)
| | - Jinsong Bian
- Department of Pharmacology, School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China; (L.D.); (Z.W.)
- Correspondence: (X.N.); (J.B.)
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18
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Abstract
Pulmonary hypertension (PH) describes heterogeneous population of patients with a mean pulmonary arterial pressure >20 mm Hg. Rarely, PH presents as a primary disorder but is more commonly part of a complex phenotype associated with comorbidities. Regardless of the cause, PH reduces life expectancy and impacts quality of life. The current clinical classification divides PH into 1 of 5 diagnostic groups to assign treatment. There are currently no pharmacological cures for any form of PH. Animal models are essential to help decipher the molecular mechanisms underlying the disease, to assign genotype-phenotype relationships to help identify new therapeutic targets, and for clinical translation to assess the mechanism of action and putative efficacy of new therapies. However, limitations inherent of all animal models of disease limit the ability of any single model to fully recapitulate complex human disease. Within the PH community, we are often critical of animal models due to the perceived low success upon clinical translation of new drugs. In this review, we describe the characteristics, advantages, and disadvantages of existing animal models developed to gain insight into the molecular and pathological mechanisms and test new therapeutics, focusing on adult forms of PH from groups 1 to 3. We also discuss areas of improvement for animal models with approaches combining several hits to better reflect the clinical situation and elevate their translational value.
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Affiliation(s)
- Olivier Boucherat
- Pulmonary Hypertension Research Group, Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC, Canada
- Department of Medicine, Université Laval, Québec, QC, Canada
| | - Vineet Agrawal
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Allan Lawrie
- Dept of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK & Insigneo institute for in silico medicine, Sheffield, UK
| | - Sebastien Bonnet
- Pulmonary Hypertension Research Group, Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC, Canada
- Department of Medicine, Université Laval, Québec, QC, Canada
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19
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Prisco SZ, Hartweck LM, Rose L, Lima PDA, Thenappan T, Archer SL, Prins KW. Inflammatory Glycoprotein 130 Signaling Links Changes in Microtubules and Junctophilin-2 to Altered Mitochondrial Metabolism and Right Ventricular Contractility. Circ Heart Fail 2022; 15:e008574. [PMID: 34923829 PMCID: PMC8766918 DOI: 10.1161/circheartfailure.121.008574] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
BACKGROUND Right ventricular dysfunction (RVD) is the leading cause of death in pulmonary arterial hypertension (PAH), but no RV-specific therapy exists. We showed microtubule-mediated junctophilin-2 dysregulation (MT-JPH2 pathway) causes t-tubule disruption and RVD in rodent PAH, but the druggable regulators of this critical pathway are unknown. GP130 (glycoprotein 130) activation induces cardiomyocyte microtubule remodeling in vitro; however, the effects of GP130 signaling on the MT-JPH2 pathway and RVD resulting from PAH are undefined. METHODS Immunoblots quantified protein abundance, quantitative proteomics defined RV microtubule-interacting proteins (MT-interactome), metabolomics evaluated the RV metabolic signature, and transmission electron microscopy assessed RV cardiomyocyte mitochondrial morphology in control, monocrotaline, and monocrotaline-SC-144 (GP130 antagonist) rats. Echocardiography and pressure-volume loops defined the effects of SC-144 on RV-pulmonary artery coupling in monocrotaline rats (8-16 rats per group). In 73 patients with PAH, the relationship between interleukin-6, a GP130 ligand, and RVD was evaluated. RESULTS SC-144 decreased GP130 activation, which normalized MT-JPH2 protein expression and t-tubule structure in the monocrotaline RV. Proteomics analysis revealed SC-144 restored RV MT-interactome regulation. Ingenuity pathway analysis of dysregulated MT-interacting proteins identified a link between microtubules and mitochondrial function. Specifically, SC-144 prevented dysregulation of electron transport chain, Krebs cycle, and the fatty acid oxidation pathway proteins. Metabolomics profiling suggested SC-144 reduced glycolytic dependence, glutaminolysis induction, and enhanced fatty acid metabolism. Transmission electron microscopy and immunoblots indicated increased mitochondrial fission in the monocrotaline RV, which SC-144 mitigated. GP130 antagonism reduced RV hypertrophy and fibrosis and augmented RV-pulmonary artery coupling without altering PAH severity. In patients with PAH, higher interleukin-6 levels were associated with more severe RVD (RV fractional area change 23±12% versus 30±10%, P=0.002). CONCLUSIONS GP130 antagonism reduces MT-JPH2 dysregulation, corrects metabolic derangements in the RV, and improves RVD in monocrotaline rats.
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Affiliation(s)
- Sasha Z. Prisco
- Cardiovascular Division, Lillehei Heart Institute, Department of Medicine, University of Minnesota, Minneapolis, MN
| | - Lynn M. Hartweck
- Cardiovascular Division, Lillehei Heart Institute, Department of Medicine, University of Minnesota, Minneapolis, MN
| | - Lauren Rose
- Cardiovascular Division, Lillehei Heart Institute, Department of Medicine, University of Minnesota, Minneapolis, MN
| | | | - Thenappan Thenappan
- Cardiovascular Division, Lillehei Heart Institute, Department of Medicine, University of Minnesota, Minneapolis, MN
| | - Stephen L. Archer
- Queen’s CardioPulmonary Unit, Kingston, ON, Canada,Department of Medicine, Queen’s University, Kingston, ON, Canada
| | - Kurt W. Prins
- Cardiovascular Division, Lillehei Heart Institute, Department of Medicine, University of Minnesota, Minneapolis, MN
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20
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Legchenko E, Chouvarine P, Hansmann G. Letter by Legchenko et al Regarding Article, "Transcriptomic Analysis of Right Ventricular Remodeling in Two Rat Models of Pulmonary Hypertension: Identification and Validation of Epithelial-to-Mesenchymal Transition in Human Right Ventricular Failure". Circ Heart Fail 2021; 14:e008503. [PMID: 34932370 DOI: 10.1161/circheartfailure.121.008503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Ekaterina Legchenko
- Department of Pediatric Cardiology and Critical Care, Hannover Medical School, Germany. European Pediatric Pulmonary Vascular Disease Network, Berlin, Germany
| | - Philippe Chouvarine
- Department of Pediatric Cardiology and Critical Care, Hannover Medical School, Germany. European Pediatric Pulmonary Vascular Disease Network, Berlin, Germany
| | - Georg Hansmann
- Department of Pediatric Cardiology and Critical Care, Hannover Medical School, Germany. European Pediatric Pulmonary Vascular Disease Network, Berlin, Germany
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