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Pokharel MD, Fu P, Garcia-Flores A, Yegambaram M, Lu Q, Sun X, Unwalla H, Aggarwal S, Fineman JR, Wang T, Black SM. Inflammatory lung injury is associated with endothelial cell mitochondrial fission and requires the nitration of RhoA and cytoskeletal remodeling. Free Radic Biol Med 2024:S0891-5849(24)00454-4. [PMID: 38734269 DOI: 10.1016/j.freeradbiomed.2024.05.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/12/2024] [Accepted: 05/09/2024] [Indexed: 05/13/2024]
Abstract
Higher levels of extracellular nicotinamide phosphoribosyltransferase (eNAMPT), a TLR4 agonist, are associated with poor clinical outcomes in sepsis-induced acute lung injury (ALI). Little is known regarding the mechanisms by which eNAMPT is involved in ALI. Our recent work has identified a crucial role for mitochondrial dysfunction in ALI. Thus, this study aimed to determine if eNAMPT-mediated inflammatory injury is associated with the loss of mitochondrial function. Our data show that eNAMPT disrupted mitochondrial bioenergetics. This was associated with cytoskeleton remodeling and the loss of endothelial barrier integrity. These changes were associated with enhanced mitochondrial fission and blocked when Rho-kinase (ROCK) was inhibited. The increases in mitochondrial fission were also associated with the nitration-mediated activation of the small GTPase activator of ROCK, RhoA. Blocking RhoA nitration decreased eNAMPT-mediated mitochondrial fission and endothelial barrier dysfunction. The increase in fission was linked to a RhoA-ROCK mediated increase in Drp1 (dynamin-related protein 1) at serine(S)616. Another TLR4 agonist, lipopolysaccharide (LPS), also increased mitochondrial fission in a Drp1 and RhoA-ROCK-dependent manner. To validate our findings in vivo, we challenged C57BL/6 mice with eNAMPT in the presence and absence of the Drp1 inhibitor, Mdivi-1. Mdivi-1 treatment protected against eNAMPT-induced lung inflammation, edema, and lung injury. These studies demonstrate that mitochondrial fission-dependent disruption of mitochondrial function is essential in TLR4-mediated inflammatory lung injury and identify a key role for RhoA-ROCK signaling. Reducing mitochondrial fission could be a potential therapeutic strategy to improve ARDS outcomes.
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Affiliation(s)
- Marissa D Pokharel
- Department of Cellular & Molecular Medicine, Herbert Wertheim College of Medicine, Miami, FL, USA; Center for Translational Science, Florida International University, Port St. Lucie, FL, USA
| | - Panfeng Fu
- Center for Translational Science, Florida International University, Port St. Lucie, FL, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, University Park, FL, United States
| | | | - Manivannan Yegambaram
- Center for Translational Science, Florida International University, Port St. Lucie, FL, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, University Park, FL, United States
| | - Qing Lu
- Center for Translational Science, Florida International University, Port St. Lucie, FL, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, University Park, FL, United States
| | - Xutong Sun
- Center for Translational Science, Florida International University, Port St. Lucie, FL, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, University Park, FL, United States
| | - Hoshang Unwalla
- Department of Immunology and Nano-Medicine, Howard Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Saurabh Aggarwal
- Department of Cellular & Molecular Medicine, Herbert Wertheim College of Medicine, Miami, FL, USA
| | - Jeffrey R Fineman
- Department of Pediatrics, University of California San Francisco, San Francisco, CA, 94143; Department of Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA, 94143
| | - Ting Wang
- Center for Translational Science, Florida International University, Port St. Lucie, FL, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, University Park, FL, United States
| | - Stephen M Black
- Department of Cellular & Molecular Medicine, Herbert Wertheim College of Medicine, Miami, FL, USA; Center for Translational Science, Florida International University, Port St. Lucie, FL, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, University Park, FL, United States.
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Feng A, Pokharel MD, Liang Y, Ma W, Aggarwal S, Black SM, Wang T. Free Radical-Associated Gene Signature Predicts Survival in Sepsis Patients. Int J Mol Sci 2024; 25:4574. [PMID: 38674159 PMCID: PMC11049877 DOI: 10.3390/ijms25084574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 04/15/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024] Open
Abstract
Sepsis continues to overwhelm hospital systems with its high mortality rate and prevalence. A strategy to reduce the strain of sepsis on hospital systems is to develop a diagnostic/prognostic measure that identifies patients who are more susceptible to septic death. Current biomarkers fail to achieve this outcome, as they only have moderate diagnostic power and limited prognostic capabilities. Sepsis disrupts a multitude of pathways in many different organ systems, making the identification of a single powerful biomarker difficult to achieve. However, a common feature of many of these perturbed pathways is the increased generation of reactive oxygen species (ROS), which can alter gene expression, changes in which may precede the clinical manifestation of severe sepsis. Therefore, the aim of this study was to evaluate whether ROS-related circulating molecular signature can be used as a tool to predict sepsis survival. Here we created a ROS-related gene signature and used two Gene Expression Omnibus datasets from whole blood samples of septic patients to generate a 37-gene molecular signature that can predict survival of sepsis patients. Our results indicate that peripheral blood gene expression data can be used to predict the survival of sepsis patients by assessing the gene expression pattern of free radical-associated -related genes in patients, warranting further exploration.
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Affiliation(s)
- Anlin Feng
- Center for Translational Science, Florida International University, Port Saint Lucie, FL 34987, USA
- Department of Environmental Health Sciences, Florida International University, Miami, FL 33199, USA
| | - Marissa D. Pokharel
- Center for Translational Science, Florida International University, Port Saint Lucie, FL 34987, USA
- Department of Cellular and Molecular Medicine, Florida International University, Miami, FL 33199, USA
| | - Ying Liang
- Center for Translational Science, Florida International University, Port Saint Lucie, FL 34987, USA
- Department of Environmental Health Sciences, Florida International University, Miami, FL 33199, USA
| | - Wenli Ma
- Center for Translational Science, Florida International University, Port Saint Lucie, FL 34987, USA
- Department of Environmental Health Sciences, Florida International University, Miami, FL 33199, USA
| | - Saurabh Aggarwal
- Center for Translational Science, Florida International University, Port Saint Lucie, FL 34987, USA
- Department of Cellular and Molecular Medicine, Florida International University, Miami, FL 33199, USA
| | - Stephen M. Black
- Center for Translational Science, Florida International University, Port Saint Lucie, FL 34987, USA
- Department of Environmental Health Sciences, Florida International University, Miami, FL 33199, USA
- Department of Cellular and Molecular Medicine, Florida International University, Miami, FL 33199, USA
| | - Ting Wang
- Center for Translational Science, Florida International University, Port Saint Lucie, FL 34987, USA
- Department of Environmental Health Sciences, Florida International University, Miami, FL 33199, USA
- Department of Cellular and Molecular Medicine, Florida International University, Miami, FL 33199, USA
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3
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Pokharel MD, Garcia-Flores A, Marciano D, Franco MC, Fineman JR, Aggarwal S, Wang T, Black SM. Mitochondrial network dynamics in pulmonary disease: Bridging the gap between inflammation, oxidative stress, and bioenergetics. Redox Biol 2024; 70:103049. [PMID: 38295575 PMCID: PMC10844980 DOI: 10.1016/j.redox.2024.103049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 01/16/2024] [Indexed: 02/02/2024] Open
Abstract
Once thought of in terms of bioenergetics, mitochondria are now widely accepted as both the orchestrator of cellular health and the gatekeeper of cell death. The pulmonary disease field has performed extensive efforts to explore the role of mitochondria in regulating inflammation, cellular metabolism, apoptosis, and oxidative stress. However, a critical component of these processes needs to be more studied: mitochondrial network dynamics. Mitochondria morphologically change in response to their environment to regulate these processes through fusion, fission, and mitophagy. This allows mitochondria to adapt their function to respond to cellular requirements, a critical component in maintaining cellular homeostasis. For that reason, mitochondrial network dynamics can be considered a bridge that brings multiple cellular processes together, revealing a potential pathway for therapeutic intervention. In this review, we discuss the critical modulators of mitochondrial dynamics and how they are affected in pulmonary diseases, including chronic obstructive pulmonary disease (COPD), idiopathic pulmonary fibrosis (IPF), acute lung injury (ALI), and pulmonary arterial hypertension (PAH). A dysregulated mitochondrial network plays a crucial role in lung disease pathobiology, and aberrant fission/fusion/mitophagy pathways are druggable processes that warrant further exploration. Thus, we also discuss the candidates for lung disease therapeutics that regulate mitochondrial network dynamics.
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Affiliation(s)
- Marissa D Pokharel
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Molecular & Cellular Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Alejandro Garcia-Flores
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA
| | - David Marciano
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Molecular & Cellular Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Maria C Franco
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Molecular & Cellular Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Jeffrey R Fineman
- Department of Pediatrics, UC San Francisco, San Francisco, CA, 94143, USA
| | - Saurabh Aggarwal
- Department of Molecular & Cellular Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Ting Wang
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA
| | - Stephen M Black
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Molecular & Cellular Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA.
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Yegambaram M, Sun X, Lu Q, Jin Y, Ornatowski W, Soto J, Aggarwal S, Wang T, Tieu K, Gu H, Fineman JR, Black SM. Mitochondrial hyperfusion induces metabolic remodeling in lung endothelial cells by modifying the activities of electron transport chain complexes I and III. Free Radic Biol Med 2024; 210:183-194. [PMID: 37979892 DOI: 10.1016/j.freeradbiomed.2023.11.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/02/2023] [Accepted: 11/11/2023] [Indexed: 11/20/2023]
Abstract
OBJECTIVE Pulmonary hypertension (PH) is a progressive disease with vascular remodeling as a critical structural alteration. We have previously shown that metabolic reprogramming is an early initiating mechanism in animal models of PH. This metabolic dysregulation has been linked to remodeling the mitochondrial network to favor fission. However, whether the mitochondrial fission/fusion balance underlies the metabolic reprogramming found early in PH development is unknown. METHODS Utilizing a rat early model of PH, in conjunction with cultured pulmonary endothelial cells (PECs), we utilized metabolic flux assays, Seahorse Bioassays, measurements of electron transport chain (ETC) complex activity, fluorescent microscopy, and molecular approaches to investigate the link between the disruption of mitochondrial dynamics and the early metabolic changes that occur in PH. RESULTS We observed increased fusion mediators, including Mfn1, Mfn2, and Opa1, and unchanged fission mediators, including Drp1 and Fis1, in a two-week monocrotaline-induced PH animal model (early-stage PH). We were able to establish a connection between increases in fusion mediator Mfn1 and metabolic reprogramming. Using an adenoviral expression system to enhance Mfn1 levels in pulmonary endothelial cells and utilizing 13C-glucose labeled substrate, we found increased production of 13C lactate and decreased TCA cycle metabolites, revealing a Warburg phenotype. The use of a 13C5-glutamine substrate showed evidence that hyperfusion also induces oxidative carboxylation. The increase in glycolysis was linked to increased hypoxia-inducible factor 1α (HIF-1α) protein levels secondary to the disruption of cellular bioenergetics and higher levels of mitochondrial reactive oxygen species (mt-ROS). The elevation in mt-ROS correlated with attenuated ETC complexes I and III activities. Utilizing a mitochondrial-targeted antioxidant to suppress mt-ROS, limited HIF-1α protein levels, which reduced cellular glycolysis and reestablished mitochondrial membrane potential. CONCLUSIONS Our data connects mitochondrial fusion-mediated mt-ROS to the Warburg phenotype in early-stage PH development.
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Affiliation(s)
- Manivannan Yegambaram
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA
| | - Xutong Sun
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA
| | - Qing Lu
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA
| | - Yan Jin
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA
| | | | - Jamie Soto
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA
| | - Saurabh Aggarwal
- Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Ting Wang
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA; Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Kim Tieu
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA
| | - Haiwei Gu
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA
| | - Jeffrey R Fineman
- Department of Pediatrics, University of California San Francisco, San Francisco, CA, 94143, USA; Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Stephen M Black
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA; Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA.
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5
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Boehme JT, Sun X, Lu Q, Barton J, Wu X, Gong W, Raff GW, Datar SA, Wang T, Fineman JR, Black SM. Simvastatin restores pulmonary endothelial function in the setting of pulmonary over-circulation. Nitric Oxide 2024; 142:58-68. [PMID: 38061411 PMCID: PMC11045265 DOI: 10.1016/j.niox.2023.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 11/27/2023] [Accepted: 11/29/2023] [Indexed: 12/20/2023]
Abstract
Statin therapy is a cornerstone in the treatment of systemic vascular diseases. However, statins have failed to translate as therapeutics for pulmonary vascular disease. Early pulmonary vascular disease in the setting of congenital heart disease (CHD) is characterized by endothelial dysfunction, which precedes the more advanced stages of vascular remodeling. These features make CHD an ideal cohort in which to re-evaluate the potential pulmonary vascular benefits of statins, with a focus on endothelial biology. However, it is critical that the full gamut of the pleiotropic effects of statins in the endothelium are uncovered. The purpose of this investigation was to evaluate the therapeutic potential of simvastatin for children with CHD and pulmonary over-circulation, and examine mechanisms of simvastatin action on the endothelium. Our data demonstrate that daily simvastatin treatment preserves endothelial function in our shunt lamb model of pulmonary over-circulation. Further, using pulmonary arterial endothelial cells (PAECs) isolated from Shunt and control lambs, we identified a new mechanism of statin action mediated by increased expression of the endogenous Akt1 inhibitor, C-terminal modifying protein (CTMP). Increases in CTMP were able to decrease the Akt1-mediated mitochondrial redistribution of endothelial nitric oxide synthase (eNOS) which correlated with increased enzymatic coupling, identified by increases in NO generation and decreases in NOS-derived superoxide. Together our data identify a new mechanism by which simvastatin enhances NO signaling in the pulmonary endothelium and identify CTMP as a potential therapeutic target to prevent the endothelial dysfunction that occurs in children born with CHD resulting in pulmonary over-circulation.
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Affiliation(s)
- Jason T Boehme
- Department of Pediatrics, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Xutong Sun
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA
| | - Qing Lu
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA
| | - Jubilee Barton
- Department of Pediatrics, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Xiaomin Wu
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, 85719, USA
| | - Wenhui Gong
- Department of Pediatrics, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Gary W Raff
- Department of Surgery, University of California Davis, Davis, CA, 95817, USA
| | - Sanjeev A Datar
- Department of Pediatrics, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Ting Wang
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA
| | - Jeffrey R Fineman
- Department of Pediatrics, University of California San Francisco, San Francisco, CA, 94143, USA; Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Stephen M Black
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA; Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA.
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6
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Yegambaram M, Sun X, Flores AG, Lu Q, Soto J, Richards J, Aggarwal S, Wang T, Gu H, Fineman JR, Black SM. Novel Relationship between Mitofusin 2-Mediated Mitochondrial Hyperfusion, Metabolic Remodeling, and Glycolysis in Pulmonary Arterial Endothelial Cells. Int J Mol Sci 2023; 24:17533. [PMID: 38139362 PMCID: PMC10744129 DOI: 10.3390/ijms242417533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023] Open
Abstract
The disruption of mitochondrial dynamics has been identified in cardiovascular diseases, including pulmonary hypertension (PH), ischemia-reperfusion injury, heart failure, and cardiomyopathy. Mitofusin 2 (Mfn2) is abundantly expressed in heart and pulmonary vasculature cells at the outer mitochondrial membrane to modulate fusion. Previously, we have reported reduced levels of Mfn2 and fragmented mitochondria in pulmonary arterial endothelial cells (PAECs) isolated from a sheep model of PH induced by pulmonary over-circulation and restoring Mfn2 normalized mitochondrial function. In this study, we assessed the effect of increased expression of Mfn2 on mitochondrial metabolism, bioenergetics, reactive oxygen species production, and mitochondrial membrane potential in control PAECs. Using an adenoviral expression system to overexpress Mfn2 in PAECs and utilizing 13C labeled substrates, we assessed the levels of TCA cycle metabolites. We identified increased pyruvate and lactate production in cells, revealing a glycolytic phenotype (Warburg phenotype). Mfn2 overexpression decreased the mitochondrial ATP production rate, increased the rate of glycolytic ATP production, and disrupted mitochondrial bioenergetics. The increase in glycolysis was linked to increased hypoxia-inducible factor 1α (HIF-1α) protein levels, elevated mitochondrial reactive oxygen species (mt-ROS), and decreased mitochondrial membrane potential. Our data suggest that disrupting the mitochondrial fusion/fission balance to favor hyperfusion leads to a metabolic shift that promotes aerobic glycolysis. Thus, therapies designed to increase mitochondrial fusion should be approached with caution.
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Affiliation(s)
- Manivannan Yegambaram
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL 34987-2352, USA; (M.Y.); (X.S.); (A.G.F.); (Q.L.); (J.S.); (J.R.); (T.W.); (H.G.)
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL 33199, USA
| | - Xutong Sun
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL 34987-2352, USA; (M.Y.); (X.S.); (A.G.F.); (Q.L.); (J.S.); (J.R.); (T.W.); (H.G.)
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL 33199, USA
| | - Alejandro Garcia Flores
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL 34987-2352, USA; (M.Y.); (X.S.); (A.G.F.); (Q.L.); (J.S.); (J.R.); (T.W.); (H.G.)
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL 33199, USA
| | - Qing Lu
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL 34987-2352, USA; (M.Y.); (X.S.); (A.G.F.); (Q.L.); (J.S.); (J.R.); (T.W.); (H.G.)
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL 33199, USA
| | - Jamie Soto
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL 34987-2352, USA; (M.Y.); (X.S.); (A.G.F.); (Q.L.); (J.S.); (J.R.); (T.W.); (H.G.)
| | - Jaime Richards
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL 34987-2352, USA; (M.Y.); (X.S.); (A.G.F.); (Q.L.); (J.S.); (J.R.); (T.W.); (H.G.)
| | - Saurabh Aggarwal
- Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International University, Miami, FL 33199, USA;
| | - Ting Wang
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL 34987-2352, USA; (M.Y.); (X.S.); (A.G.F.); (Q.L.); (J.S.); (J.R.); (T.W.); (H.G.)
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL 33199, USA
| | - Haiwei Gu
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL 34987-2352, USA; (M.Y.); (X.S.); (A.G.F.); (Q.L.); (J.S.); (J.R.); (T.W.); (H.G.)
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL 33199, USA
| | - Jeffrey R. Fineman
- Department of Pediatrics, University of California San Francisco, San Francisco, CA 94143, USA;
- Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA 94143, USA
| | - Stephen M. Black
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL 34987-2352, USA; (M.Y.); (X.S.); (A.G.F.); (Q.L.); (J.S.); (J.R.); (T.W.); (H.G.)
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL 33199, USA
- Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International University, Miami, FL 33199, USA;
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7
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Feng A, Caro YM, Gardner C, Grischo G, Liang Y, Wickremasinghe PD, Polmann M, Kala M, Marlowe T, Black SM, Knox KS, Wang T. PTK2-associated gene signature could predict the prognosis of IPF. Respir Res 2023; 24:304. [PMID: 38053045 PMCID: PMC10699084 DOI: 10.1186/s12931-023-02582-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 10/26/2023] [Indexed: 12/07/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive and fatal lung disease with a poor prognosis. Current/available clinical prediction tools have limited sensitivity and accuracy when evaluating clinical outcomes of IPF. Research has shown that focal adhesion kinase (FAK), produced by the protein tyrosine kinase 2 (PTK2) gene, is crucial in IPF development. FAK activation is a characteristic of lesional fibroblasts; Thus, FAK may be a valuable therapeutic target or prognostic biomarker for IPF. This study aimed to create a gene signature based on PTK2-associated genes and microarray data from blood cells to predict disease prognosis in patients with IPF. PTK2 levels were found to be higher in lung tissues of IPF patients compared to healthy controls, and PTK2 inhibitor Defactinib was found to reduce TGFβ-induced FAK activation and increase α-smooth muscle actin. Although the blood PTK2 levels were higher in IPF patients, blood PTK level alone could not predict IPF prognosis. From 196 PTK2-associated genes, 11 genes were prioritized to create a gene signature (PTK2 molecular signature) and a risk score system using univariate and multivariate Cox regression analysis. Patients were divided into high-risk and low-risk groups using PTK2 molecular signature. Patients in the high-risk group experienced decreased survival rates compared to patients in the low-risk group across all discovery and validation cohorts. Further functional enrichment and immune cell proportion analyses revealed that the PTK2 molecular signature strongly reflected the activation levels of immune pathways and immune cells. These findings suggested that PTK2 is a molecular target of IPF and the PTK2 molecular signature is an effective IPF prognostic biomarker.
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Affiliation(s)
- Anlin Feng
- Center for Translational Science, and Department of Environmental Health, Florida International University, Port St. Lucie, FL, 36987, USA
| | - Yesenia Moreno Caro
- Department of Internal Medicine, University of Arizona, Phoenix, AZ, 85004, USA
| | - Colin Gardner
- Department of Internal Medicine, University of Arizona, Phoenix, AZ, 85004, USA
| | - Garrett Grischo
- Department of Internal Medicine, University of Arizona, Phoenix, AZ, 85004, USA
| | - Ying Liang
- Center for Translational Science, and Department of Environmental Health, Florida International University, Port St. Lucie, FL, 36987, USA
| | - Praveen D Wickremasinghe
- Herbert Wertheim College of Medicine, Florida International University, Port St. Lucie, FL, 33199, USA
| | - Michaela Polmann
- Herbert Wertheim College of Medicine, Florida International University, Port St. Lucie, FL, 33199, USA
| | - Mrinalini Kala
- Department of Internal Medicine, University of Arizona, Phoenix, AZ, 85004, USA
| | - Timothy Marlowe
- Department of Internal Medicine, University of Arizona, Phoenix, AZ, 85004, USA
| | - Stephen M Black
- Center for Translational Science, and Department of Environmental Health, Florida International University, Port St. Lucie, FL, 36987, USA
- Herbert Wertheim College of Medicine, Florida International University, Port St. Lucie, FL, 33199, USA
| | - Kenneth S Knox
- Department of Internal Medicine, University of Arizona, Phoenix, AZ, 85004, USA
| | - Ting Wang
- Center for Translational Science, and Department of Environmental Health, Florida International University, Port St. Lucie, FL, 36987, USA.
- Department of Internal Medicine, University of Arizona, Phoenix, AZ, 85004, USA.
- Herbert Wertheim College of Medicine, Florida International University, Port St. Lucie, FL, 33199, USA.
- Center for Translational Science, Florida International University, 11350 SW Village Pkwy, Port St. Lucie, FL, 34987, USA.
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8
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Wu J, Liang Y, Fu P, Feng A, Lu Q, Unwalla HJ, Marciano DP, Black SM, Wang T. Sphingosine-1-Phosphate Receptor 3 Induces Endothelial Barrier Loss via ADAM10-Mediated Vascular Endothelial-Cadherin Cleavage. Int J Mol Sci 2023; 24:16083. [PMID: 38003272 PMCID: PMC10671260 DOI: 10.3390/ijms242216083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 10/31/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Mechanical ventilation (MV) is a life-supporting strategy employed in the Intensive Care Unit (ICU). However, MV-associated mechanical stress exacerbates existing lung inflammation in ICU patients, resulting in limited improvement in mortality and a condition known as Ventilator-Induced Lung Injury (VILI). Sphingosine-1-phosphate (S1P) is a circulating bioactive lipid that maintains endothelial integrity primarily through S1P receptor 1 (S1PR1). During VILI, mechanical stress upregulates endothelial S1PR3 levels. Unlike S1PR1, S1PR3 mediates endothelial barrier disruption through Rho-dependent pathways. However, the specific impact of elevated S1PR3 on lung endothelial function, apart from Rho activation, remains poorly understood. In this study, we investigated the effects of S1PR3 in endothelial pathobiology during VILI using an S1PR3 overexpression adenovirus. S1PR3 overexpression caused cytoskeleton rearrangement, formation of paracellular gaps, and a modified endothelial response towards S1P. It resulted in a shift from S1PR1-dependent barrier enhancement to S1PR3-dependent barrier disruption. Moreover, S1PR3 overexpression induced an ADAM10-dependent cleavage of Vascular Endothelial (VE)-cadherin, which hindered endothelial barrier recovery. S1PR3-induced cleavage of VE-cadherin was at least partially regulated by S1PR3-mediated NFκB activation. Additionally, we employed an S1PR3 inhibitor TY-52156 in a murine model of VILI. TY-52156 effectively attenuated VILI-induced increases in bronchoalveolar lavage cell counts and protein concentration, suppressed the release of pro-inflammatory cytokines, and inhibited lung inflammation as assessed via a histological evaluation. These findings confirm that mechanical stress associated with VILI increases S1PR3 levels, thereby altering the pulmonary endothelial response towards S1P and impairing barrier recovery. Inhibiting S1PR3 is validated as an effective therapeutic strategy for VILI.
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Affiliation(s)
- Jialin Wu
- Center for Translational Science, Florida International University, Port Saint Lucie, FL 34987, USA
- Department of Environmental Health Sciences, Florida International University, Miami, FL 33199, USA
| | - Ying Liang
- Center for Translational Science, Florida International University, Port Saint Lucie, FL 34987, USA
- Department of Environmental Health Sciences, Florida International University, Miami, FL 33199, USA
| | - Panfeng Fu
- Center for Translational Science, Florida International University, Port Saint Lucie, FL 34987, USA
- Department of Environmental Health Sciences, Florida International University, Miami, FL 33199, USA
| | - Anlin Feng
- Center for Translational Science, Florida International University, Port Saint Lucie, FL 34987, USA
- Department of Environmental Health Sciences, Florida International University, Miami, FL 33199, USA
| | - Qing Lu
- Center for Translational Science, Florida International University, Port Saint Lucie, FL 34987, USA
- Department of Environmental Health Sciences, Florida International University, Miami, FL 33199, USA
| | - Hoshang J. Unwalla
- Department of Immunology and Nanomedicine, Florida International University, Miami, FL 33199, USA
| | - David P. Marciano
- Center for Translational Science, Florida International University, Port Saint Lucie, FL 34987, USA
- Department of Cellular Biology and Pharmacology, Florida International University, Miami, FL 33199, USA
| | - Stephen M. Black
- Center for Translational Science, Florida International University, Port Saint Lucie, FL 34987, USA
- Department of Environmental Health Sciences, Florida International University, Miami, FL 33199, USA
- Department of Cellular Biology and Pharmacology, Florida International University, Miami, FL 33199, USA
| | - Ting Wang
- Center for Translational Science, Florida International University, Port Saint Lucie, FL 34987, USA
- Department of Environmental Health Sciences, Florida International University, Miami, FL 33199, USA
- Department of Cellular Biology and Pharmacology, Florida International University, Miami, FL 33199, USA
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9
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Yegambaram M, Kumar S, Wu X, Lu Q, Sun X, Garcia Flores A, Meadows ML, Barman S, Fulton D, Wang T, Fineman JR, Black SM. Endothelin-1 acutely increases nitric oxide production via the calcineurin mediated dephosphorylation of Caveolin-1. Nitric Oxide 2023; 140-141:50-57. [PMID: 37659679 DOI: 10.1016/j.niox.2023.08.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/22/2023] [Accepted: 08/30/2023] [Indexed: 09/04/2023]
Abstract
Endothelin (ET)-1 is an endothelial-derived peptide that exerts biphasic effects on nitric oxide (NO) levels in endothelial cells such that acute exposure stimulates-while sustained exposure attenuates-NO production. Although the mechanism involved in the decrease in NO generation has been identified but the signaling involved in the acute increase in NO is still unresolved. This was the focus of this study. Our data indicate that exposing pulmonary arterial endothelial cells (PAEC) to ET-1 led to an increase in NO for up to 30min after which levels declined. These effects were attenuated by ET receptor antagonists. The increase in NO correlated with significant increases in pp60Src activity and increases in eNOS phosphorylation at Tyr83 and Ser1177. The ET-1 mediated increase in phosphorylation and NO generation were attenuated by the over-expression of a pp60Src dominant negative mutant. The increase in pp60Src activity correlated with a reduction in the interaction of Caveolin-1 with pp60Src and the calcineurin-mediated dephosphorylation of caveolin-1 at three previously unidentified sites: Thr91, Thr93, and Thr95. The calcineurin inhibitor, Tacrolimus, attenuated the acute increase in pp60Src activity induced by ET-1 and a calcineurin siRNA attenuated the ET-1 mediated increase in eNOS phosphorylation at Tyr83 and Ser1177 as well as the increase in NO. By using a Caveolin-1 celluSpot peptide array, we identified a peptide targeting a sequence located between aa 41-56 as the pp60Src binding region. This peptide fused to the TAT sequence was found to decrease caveolin-pp60Src interaction, increased pp60Src activity, increased eNOS pSer1177 and NO levels in PAEC and induce vasodilation in isolated aortic rings in wildtype but not eNOS knockout mice. Together, our data identify a novel mechanism by which ET-1 acutely increases NO via a calcineurin-mediated dephosphorylation of caveolin-1 and the subsequent stimulation of pp60Src activity, leading to increases in phosphorylation of eNOS at Tyr83 and Ser1177.
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Affiliation(s)
- Manivannan Yegambaram
- Center of Translational Science, Florida International University, Port St. Lucie, FL, 34987, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, USA
| | - Sanjiv Kumar
- Department of Medicine, Augusta University, Augusta, GA, USA; Vascular Biology Center, Augusta University, Augusta, GA, USA
| | - Xiaomin Wu
- Department of Medicine, University of Arizona, Tucson, AZ, 33174, USA
| | - Qing Lu
- Center of Translational Science, Florida International University, Port St. Lucie, FL, 34987, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, USA
| | - Xutong Sun
- Center of Translational Science, Florida International University, Port St. Lucie, FL, 34987, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, USA
| | - Alejandro Garcia Flores
- Center of Translational Science, Florida International University, Port St. Lucie, FL, 34987, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, USA
| | | | - Scott Barman
- Department of Pharmacology, Augusta University, Augusta, GA, USA
| | - David Fulton
- Vascular Biology Center, Augusta University, Augusta, GA, USA; Department of Pharmacology, Augusta University, Augusta, GA, USA
| | - Ting Wang
- Center of Translational Science, Florida International University, Port St. Lucie, FL, 34987, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, USA
| | - Jeffrey R Fineman
- Department of Pediatrics, University of California, San Francisco, San Francisco, CA, USA; Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA, USA
| | - Stephen M Black
- Center of Translational Science, Florida International University, Port St. Lucie, FL, 34987, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, USA; Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International University, Miami, FL, 33174, USA.
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10
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Thota LNR, Lopez Rosales JE, Placencia I, Zemskov EA, Tonino P, Michael AN, Black SM, Chignalia AZ. The Pulmonary Endothelial Glycocalyx Modifications in Glypican 1 Knockout Mice Do Not Affect Lung Endothelial Function in Physiological Conditions. Int J Mol Sci 2023; 24:14568. [PMID: 37834029 PMCID: PMC10573009 DOI: 10.3390/ijms241914568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/11/2023] [Accepted: 09/20/2023] [Indexed: 10/15/2023] Open
Abstract
The endothelial glycocalyx is a dynamic signaling surface layer that is involved in the maintenance of cellular homeostasis. The glycocalyx has a very diverse composition, with glycoproteins, proteoglycans, and glycosaminoglycans interacting with each other to form a mesh-like structure. Due to its highly interactive nature, little is known about the relative contribution of each glycocalyx constituent to its overall function. Investigating the individual roles of the glycocalyx components to cellular functions and system physiology is challenging, as the genetic manipulation of animals that target specific glycocalyx components may result in the development of a modified glycocalyx. Thus, it is crucial that genetically modified animal models for glycocalyx components are characterized and validated before the development of mechanistic studies. Among the glycocalyx components, glypican 1, which acts through eNOS-dependent mechanisms, has recently emerged as a player in cardiovascular diseases. Whether glypican 1 regulates eNOS in physiological conditions is unclear. Herein, we assessed how the deletion of glypican 1 affects the development of the pulmonary endothelial glycocalyx and the impact on eNOS activity and endothelial function. Male and female 5-9-week-old wild-type and glypican 1 knockout mice were used. Transmission electron microscopy, immunofluorescence, and immunoblotting assessed the glycocalyx structure and composition. eNOS activation and content were assessed by immunoblotting; nitric oxide production was assessed by the Griess reaction. The pulmonary phenotype was evaluated by histological signs of lung injury, in vivo measurement of lung mechanics, and pulmonary ventilation. Glypican 1 knockout mice showed a modified glycocalyx with increased glycocalyx thickness and heparan sulfate content and decreased expression of syndecan 4. These alterations were associated with decreased phosphorylation of eNOS at S1177. The production of nitric oxides was not affected by the deletion of glypican 1, and the endothelial barrier was preserved in glypican 1 knockout mice. Pulmonary compliance was decreased, and pulmonary ventilation was unaltered in glypican 1 knockout mice. Collectively, these data indicate that the deletion of glypican 1 may result in the modification of the glycocalyx without affecting basal lung endothelial function, validating this mouse model as a tool for mechanistic studies that investigate the role of glypican 1 in lung endothelial function.
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Affiliation(s)
- Lakshmi N. R. Thota
- Department of Anesthesiology, College of Medicine-Tucson, The University of Arizona, Tucson, AZ 85724, USA (J.E.L.R.)
| | - Joaquin E. Lopez Rosales
- Department of Anesthesiology, College of Medicine-Tucson, The University of Arizona, Tucson, AZ 85724, USA (J.E.L.R.)
| | - Ivan Placencia
- Department of Anesthesiology, College of Medicine-Tucson, The University of Arizona, Tucson, AZ 85724, USA (J.E.L.R.)
| | - Evgeny A. Zemskov
- Center for Translational Science, Florida International University, Port St. Lucie, FL 34987, USA
- Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International University, Miami, FL 33199, USA
| | - Paola Tonino
- Research, Innovation & Impact Cores Facilities, Imaging Cores-Electron, Life Sciences North, The University of Arizona, Tucson, AZ 85719, USA;
| | - Ashley N. Michael
- Asthma and Airway Disease Research Center, The University of Arizona, Tucson, AZ 85724, USA
| | - Stephen M. Black
- Center for Translational Science, Florida International University, Port St. Lucie, FL 34987, USA
- Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International University, Miami, FL 33199, USA
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL 33174, USA
| | - Andreia Z. Chignalia
- Department of Anesthesiology, College of Medicine-Tucson, The University of Arizona, Tucson, AZ 85724, USA (J.E.L.R.)
- Department of Physiology, College of Medicine-Tucson, The University of Arizona, Tucson, AZ 85724, USA
- Sarver Heart Center, The University of Arizona, Tucson, AZ 85724, USA
- Department of Pharmacology and Toxicology, College of Pharmacy, The University of Arizona, Tucson, AZ 85721, USA
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11
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Pokharel MD, Marciano DP, Fu P, Franco MC, Unwalla H, Tieu K, Fineman JR, Wang T, Black SM. Metabolic reprogramming, oxidative stress, and pulmonary hypertension. Redox Biol 2023; 64:102797. [PMID: 37392518 PMCID: PMC10363484 DOI: 10.1016/j.redox.2023.102797] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/15/2023] [Accepted: 06/23/2023] [Indexed: 07/03/2023] Open
Abstract
Mitochondria are highly dynamic organelles essential for cell metabolism, growth, and function. It is becoming increasingly clear that endothelial cell dysfunction significantly contributes to the pathogenesis and vascular remodeling of various lung diseases, including pulmonary arterial hypertension (PAH), and that mitochondria are at the center of this dysfunction. The more we uncover the role mitochondria play in pulmonary vascular disease, the more apparent it becomes that multiple pathways are involved. To achieve effective treatments, we must understand how these pathways are dysregulated to be able to intervene therapeutically. We know that nitric oxide signaling, glucose metabolism, fatty acid oxidation, and the TCA cycle are abnormal in PAH, along with alterations in the mitochondrial membrane potential, proliferation, and apoptosis. However, these pathways are incompletely characterized in PAH, especially in endothelial cells, highlighting the urgent need for further research. This review summarizes what is currently known about how mitochondrial metabolism facilitates a metabolic shift in endothelial cells that induces vascular remodeling during PAH.
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Affiliation(s)
- Marissa D Pokharel
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - David P Marciano
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Panfeng Fu
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA
| | - Maria Clara Franco
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Hoshang Unwalla
- Department of Immunology and Nano-Medicine, Howard Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Kim Tieu
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA
| | - Jeffrey R Fineman
- Department of Pediatrics, The University of California San Francisco, San Francisco, CA, 94143, USA; Cardiovascular Research Institute, The University of California San Francisco, San Francisco, CA, 94143, USA
| | - Ting Wang
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA
| | - Stephen M Black
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA.
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12
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Panda K, Chinnapaiyan S, Rahman MS, Santiago MJ, Black SM, Unwalla HJ. Circadian-Coupled Genes Expression and Regulation in HIV-Associated Chronic Obstructive Pulmonary Disease (COPD) and Lung Comorbidities. Int J Mol Sci 2023; 24:9140. [PMID: 37298092 PMCID: PMC10253051 DOI: 10.3390/ijms24119140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/13/2023] [Accepted: 05/19/2023] [Indexed: 06/12/2023] Open
Abstract
People living with HIV (PLWH) have an elevated risk of chronic obstructive pulmonary disease (COPD) and are at a higher risk of asthma and worse outcomes. Even though the combination of antiretroviral therapy (cART) has significantly improved the life expectancy of HIV-infected patients, it still shows a higher incidence of COPD in patients as young as 40 years old. Circadian rhythms are endogenous 24 h oscillations that regulate physiological processes, including immune responses. Additionally, they play a significant role in health and diseases by regulating viral replication and its corresponding immune responses. Circadian genes play an essential role in lung pathology, especially in PLWH. The dysregulation of core clock and clock output genes plays an important role in chronic inflammation and aberrant peripheral circadian rhythmicity, particularly in PLWH. In this review, we explained the mechanism underlying circadian clock dysregulation in HIV and its effects on the development and progression of COPD. Furthermore, we discussed potential therapeutic approaches to reset the peripheral molecular clocks and mitigate airway inflammation.
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Affiliation(s)
- Kingshuk Panda
- Department of Immunology and Nanomedicine, Herbert Wertheim College of Medicine, Florida International University, 11200 SW 8th Street, Miami, FL 33199, USA; (K.P.); (S.C.); (M.S.R.); (M.J.S.)
| | - Srinivasan Chinnapaiyan
- Department of Immunology and Nanomedicine, Herbert Wertheim College of Medicine, Florida International University, 11200 SW 8th Street, Miami, FL 33199, USA; (K.P.); (S.C.); (M.S.R.); (M.J.S.)
| | - Md. Sohanur Rahman
- Department of Immunology and Nanomedicine, Herbert Wertheim College of Medicine, Florida International University, 11200 SW 8th Street, Miami, FL 33199, USA; (K.P.); (S.C.); (M.S.R.); (M.J.S.)
| | - Maria J. Santiago
- Department of Immunology and Nanomedicine, Herbert Wertheim College of Medicine, Florida International University, 11200 SW 8th Street, Miami, FL 33199, USA; (K.P.); (S.C.); (M.S.R.); (M.J.S.)
| | - Stephen M. Black
- Department of Cellular Biology & Pharmacology, Herbert Wertheim College of Medicine, Florida International University, 11200 SW 8th Street, Miami, FL 33199, USA;
| | - Hoshang J. Unwalla
- Department of Immunology and Nanomedicine, Herbert Wertheim College of Medicine, Florida International University, 11200 SW 8th Street, Miami, FL 33199, USA; (K.P.); (S.C.); (M.S.R.); (M.J.S.)
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13
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Werlein C, Ackermann M, Stark H, Shah HR, Tzankov A, Haslbauer JD, von Stillfried S, Bülow RD, El-Armouche A, Kuenzel S, Robertus JL, Reichardt M, Haverich A, Höfer A, Neubert L, Plucinski E, Braubach P, Verleden S, Salditt T, Marx N, Welte T, Bauersachs J, Kreipe HH, Mentzer SJ, Boor P, Black SM, Länger F, Kuehnel M, Jonigk D. Inflammation and vascular remodeling in COVID-19 hearts. Angiogenesis 2023; 26:233-248. [PMID: 36371548 PMCID: PMC9660162 DOI: 10.1007/s10456-022-09860-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 10/13/2022] [Indexed: 11/13/2022]
Abstract
A wide range of cardiac symptoms have been observed in COVID-19 patients, often significantly influencing the clinical outcome. While the pathophysiology of pulmonary COVID-19 manifestation has been substantially unraveled, the underlying pathomechanisms of cardiac involvement in COVID-19 are largely unknown. In this multicentre study, we performed a comprehensive analysis of heart samples from 24 autopsies with confirmed SARS-CoV-2 infection and compared them to samples of age-matched Influenza H1N1 A (n = 16), lymphocytic non-influenza myocarditis cases (n = 8), and non-inflamed heart tissue (n = 9). We employed conventional histopathology, multiplexed immunohistochemistry (MPX), microvascular corrosion casting, scanning electron microscopy, X-ray phase-contrast tomography using synchrotron radiation, and direct multiplexed measurements of gene expression, to assess morphological and molecular changes holistically. Based on histopathology, none of the COVID-19 samples fulfilled the established diagnostic criteria of viral myocarditis. However, quantification via MPX showed a significant increase in perivascular CD11b/TIE2 + -macrophages in COVID-19 over time, which was not observed in influenza or non-SARS-CoV-2 viral myocarditis patients. Ultrastructurally, a significant increase in intussusceptive angiogenesis as well as multifocal thrombi, inapparent in conventional morphological analysis, could be demonstrated. In line with this, on a molecular level, COVID-19 hearts displayed a distinct expression pattern of genes primarily coding for factors involved in angiogenesis and epithelial-mesenchymal transition (EMT), changes not seen in any of the other patient groups. We conclude that cardiac involvement in COVID-19 is an angiocentric macrophage-driven inflammatory process, distinct from classical anti-viral inflammatory responses, and substantially underappreciated by conventional histopathologic analysis. For the first time, we have observed intussusceptive angiogenesis in cardiac tissue, which we previously identified as the linchpin of vascular remodeling in COVID-19 pneumonia, as a pathognomic sign in affected hearts. Moreover, we identified CD11b + /TIE2 + macrophages as the drivers of intussusceptive angiogenesis and set forward a putative model for the molecular regulation of vascular alterations.
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Affiliation(s)
- Christopher Werlein
- Institute of Pathology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Maximilian Ackermann
- Institute of Pathology and Department of Molecular Pathology, Helios University Clinic Wuppertal, University of Witten/Herdecke, Wuppertal, Germany
- Institute of Functional and Clinical Anatomy, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Helge Stark
- Institute of Pathology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
| | - Harshit R Shah
- Institute of Pathology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
| | - Alexandar Tzankov
- Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Switzerland
| | | | | | | | - Ali El-Armouche
- Institute of Pharmacology and Toxicology, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Stephan Kuenzel
- Institute of Pharmacology and Toxicology, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Department of Dermatology, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Jan Lukas Robertus
- Department of Histopathology, Royal Brompton and Harefield NHS Foundation Trust, London, UK
| | - Marius Reichardt
- Institute for X-Ray Physics, University of Göttingen, Göttingen, Germany
| | - Axel Haverich
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - Anne Höfer
- Institute of Pathology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
| | - Lavinia Neubert
- Institute of Pathology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
| | - Edith Plucinski
- Institute of Pathology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
| | - Peter Braubach
- Institute of Pathology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
| | - Stijn Verleden
- Department of Thoracic Medicine, Antwerp University Hospital, Antwerp, Belgium
| | - Tim Salditt
- Institute for X-Ray Physics, University of Göttingen, Göttingen, Germany
- Cluster of Excellence 'Multiscale Bioimaging: From Molecular Machines to Networks of Excitable Cells' (MBExC), University of Göttingen, Göttingen, Germany
| | - Nikolaus Marx
- Department of Internal Medicine I, University Hospital Aachen, Aachen, Germany
| | - Tobias Welte
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
- Clinic of Pneumology, Hannover Medical School, Hannover, Germany
| | - Johann Bauersachs
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Hans-Heinrich Kreipe
- Institute of Pathology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Steven J Mentzer
- Laboratory of Adaptive and Regenerative Biology, Brigham and Women's Hospital, Harvard Medical School, Boston, USA
- Division of Thoracic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, USA
| | - Peter Boor
- Institute of Pathology, RWTH University of Aachen, Aachen, Germany
- Institute of Pathology and Department of Nephrology, RWTH University of Aachen, Aachen, Germany
| | - Stephen M Black
- Department of Cellular Biology and Pharmacology Translational Medicine, Florida International University, Florida, USA
| | - Florian Länger
- Institute of Pathology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
| | - Mark Kuehnel
- Institute of Pathology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
| | - Danny Jonigk
- Institute of Pathology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany.
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany.
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14
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Faraj R, Liang Y, Feng A, Wu J, Black SM, Wang T. Exploring m6A-RNA methylation as a potential therapeutic strategy for acute lung injury and acute respiratory distress syndrome. Pulm Circ 2023; 13:e12230. [PMID: 37091123 PMCID: PMC10119488 DOI: 10.1002/pul2.12230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 04/11/2023] [Accepted: 04/11/2023] [Indexed: 04/25/2023] Open
Abstract
N6-methyladenosine (m6A) is the most common methylation modification in mammalian messenger RNA (mRNA) and noncoding RNAs. m6A modification plays a role in the regulation of gene expression and deregulation of m6A methylation has been implicated in many human diseases. Recent publications suggest that exploitation of this methylation process may possess utility against acute lung injury (ALI). ALI and its more severe form, acute respiratory distress syndrome (ARDS) are acute, inflammatory clinical syndromes characterized by poor oxygenation and diffuse pulmonary infiltrates. This syndrome is associated with microvascular endothelial dysfunction, subsequent pulmonary hypertension and may ultimately lead to mortality without rigorous and acute clinical intervention. Over the years, many attempts have been made to detect novel therapeutic avenues for research without much success. The urgency for the discovery of novel therapeutic agents has become more pronounced recently given the current pandemic infection of coronavirus disease 2019 (COVID-2019), still ongoing at the time that this review is being written. We review the current landscape of literature regarding ALI and ARDS etiology, pathophysiology, and therapeutics and present a potential role of m6A methylation. Additionally, we will establish the axiomatic principles of m6A methylation to provide a framework. In conclusion, METTL3, or methyltransferase-like 3, the selective RNA methyltransferase for m6A, is a hub of proinflammatory gene expression regulation in ALI, and using a modern drug discovery strategy will identify new and effective ALI drug candidates targeting METTTL3.
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Affiliation(s)
- Reem Faraj
- Department of Internal MedicineUniversity of Arizona College of Medicine PhoenixPhoenixArizonaUSA
| | - Ying Liang
- Center for Translational Science and Department of Environmental Health SciencesFlorida International UniversityPort St. LucieFloridaUSA
| | - Anlin Feng
- Center for Translational Science and Department of Environmental Health SciencesFlorida International UniversityPort St. LucieFloridaUSA
| | - Jialin Wu
- Center for Translational Science and Department of Environmental Health SciencesFlorida International UniversityPort St. LucieFloridaUSA
| | - Stephen M. Black
- Center for Translational Science and Department of Environmental Health SciencesFlorida International UniversityPort St. LucieFloridaUSA
| | - Ting Wang
- Department of Internal MedicineUniversity of Arizona College of Medicine PhoenixPhoenixArizonaUSA
- Center for Translational Science and Department of Environmental Health SciencesFlorida International UniversityPort St. LucieFloridaUSA
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15
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Lu Q, Sun X, Yegambaram M, Ornatowski W, Wu X, Wang H, Garcia-Flores A, Da Silva V, Zemskov EA, Tang H, Fineman JR, Tieu K, Wang T, Black SM. Nitration-mediated activation of the small GTPase RhoA stimulates cellular glycolysis through enhanced mitochondrial fission. J Biol Chem 2023; 299:103067. [PMID: 36841483 PMCID: PMC10060112 DOI: 10.1016/j.jbc.2023.103067] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 02/14/2023] [Accepted: 02/16/2023] [Indexed: 02/27/2023] Open
Abstract
Mitochondrial fission and a Warburg phenotype of increased cellular glycolysis are involved in the pathogenesis of pulmonary hypertension (PH). The purpose of this study was to determine whether increases in mitochondrial fission are involved in a glycolytic switch in pulmonary arterial endothelial cells (PAECs). Mitochondrial fission is increased in PAEC isolated from a sheep model of PH induced by pulmonary overcirculation (Shunt PAEC). In Shunt PAEC we identified increases in the S616 phosphorylation responsible for dynamin-related protein 1 (Drp1) activation, the mitochondrial redistribution of Drp1, and increased cellular glycolysis. Reducing mitochondrial fission attenuated cellular glycolysis in Shunt PAEC. In addition, we observed nitration-mediated activation of the small GTPase RhoA in Shunt PAEC, and utilizing a nitration-shielding peptide, NipR1 attenuated RhoA nitration and reversed the Warburg phenotype. Thus, our data identify a novel link between RhoA, mitochondrial fission, and cellular glycolysis and suggest that targeting RhoA nitration could have therapeutic benefits for treating PH.
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Affiliation(s)
- Qing Lu
- Center of Translational Science, Florida International University, Port St Lucie, Florida, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, Florida, USA
| | - Xutong Sun
- Center of Translational Science, Florida International University, Port St Lucie, Florida, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, Florida, USA
| | | | - Wojciech Ornatowski
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona, USA
| | - Xiaomin Wu
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona, USA
| | - Hui Wang
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona, USA
| | - Alejandro Garcia-Flores
- Center of Translational Science, Florida International University, Port St Lucie, Florida, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, Florida, USA
| | - Victoria Da Silva
- Center of Translational Science, Florida International University, Port St Lucie, Florida, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, Florida, USA
| | - Evgeny A Zemskov
- Center of Translational Science, Florida International University, Port St Lucie, Florida, USA; Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International University, Miami, Florida, USA
| | - Haiyang Tang
- Center of Translational Science, Florida International University, Port St Lucie, Florida, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, Florida, USA
| | - Jeffrey R Fineman
- Department of Pediatrics, University of California San Francisco, San Francisco, California, USA; Cardiovascular Research Institute, University of California San Francisco, San Francisco, California, USA
| | - Kim Tieu
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, Florida, USA
| | - Ting Wang
- Center of Translational Science, Florida International University, Port St Lucie, Florida, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, Florida, USA
| | - Stephen M Black
- Center of Translational Science, Florida International University, Port St Lucie, Florida, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, Florida, USA; Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International University, Miami, Florida, USA.
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16
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Sangam S, Sun X, Schwantes-An TH, Yegambaram M, Lu Q, Shi Y, Cook T, Fisher A, Frump AL, Coleman A, Sun Y, Liang S, Crawford H, Lutz KA, Maun AD, Pauciulo MW, Karnes JH, Chaudhary KR, Stewart DJ, Langlais PR, Jain M, Alotaibi M, Lahm T, Jin Y, Gu H, Tang H, Nichols WC, Black SM, Desai AA. SOX17 Deficiency Mediates Pulmonary Hypertension: At the Crossroads of Sex, Metabolism, and Genetics. Am J Respir Crit Care Med 2023; 207:1055-1069. [PMID: 36913491 PMCID: PMC10112457 DOI: 10.1164/rccm.202203-0450oc] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023] Open
Abstract
RATIONALE/OBJECTIVES Genetic studies suggest SOX17 deficiency increases pulmonary arterial hypertension (PAH) risk. Based on pathological roles of estrogen and hypoxia inducible factor 2α (HIF-2α) signaling in PA endothelial cells (PAECs), we hypothesized that SOX17 is a target of estrogen signaling that promotes mitochondrial function and attenuates PAH development via HIF-2α inhibition. METHODS We used metabolic (seahorse) and promoter lucifer assays in PAECs along with the chronic hypoxia murine model to test the hypothesis. MEASUREMENTS AND MAIN RESULTS Sox17 expression was reduced in PAH tissues (rodent models and from patients). Chronic hypoxic PH was exacerbated by mice with conditional Tie2-Sox17 (Sox17EC-/-) deletion and attenuated by transgenic Tie2-Sox17 over-expression (Sox17Tg). Based on untargeted proteomics, metabolism was the top pathway altered by SOX17 deficiency in PAECs. Mechanistically, we found HIF-2α levels were increased in the lungs of Sox17EC-/- and reduced in those from Sox17Tg mice. Increased SOX17 promoted oxidative phosphorylation and mitochondrial function in PAECs, which were partly attenuated by HIF-2α overexpression. Rat lungs in males displayed higher Sox17 expression versus females, suggesting repression by estrogen signaling. Supporting 16alpha-hydroxyestrone (16αOHE, a pathologic estrogen metabolite)-mediated repression of SOX17 promoter activity, Sox17Tg mice attenuated 16αOHE-mediated exacerbations of chronic hypoxic PH. Finally, in adjusted analyses in patients with PAH, we report novel associations between a SOX17 risk variant, rs10103692, with reduced plasma citrate levels (n=1326). CONCLUSIONS Cumulatively, SOX17 promotes mitochondrial bioenergetics and attenuates PAH, in part, via inhibition of HIF-2α. 16αOHE mediates PAH development via downregulation of SOX17, linking sexual dimorphism and SOX17 genetics in PAH. This article is open access and distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives License 4.0 (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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Affiliation(s)
- Shreya Sangam
- Indiana University School of Medicine, 12250, Medicine, Indianapolis, Indiana, United States.,University of Arizona Medical Center - University Campus, 22165, Clinical and Translational Sciences, Tucson, Arizona, United States
| | - Xutong Sun
- Florida International University, Center for Translational Science, Port Saint Lucie, Florida, United States.,Florida International University, 5450, Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Miami, Florida, United States
| | - Tae-Hwi Schwantes-An
- Indiana University, Medical and Molecular Genetics, Indianapolis, Indiana, United States
| | - Manivannan Yegambaram
- Florida International University, Center for Translational Science, Port Saint Lucie, Florida, United States.,Florida International University, 5450, Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Miami, Florida, United States
| | - Qing Lu
- Florida International University, Center for Translational Science, Port Saint Lucie, Florida, United States.,Florida International University, 5450, Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Miami, Florida, United States
| | - Yinan Shi
- Indiana University, Medicine, Indianapolis, Indiana, United States
| | - Todd Cook
- Indiana University School of Medicine, 12250, Medicine, Indianapolis, Indiana, United States
| | - Amanda Fisher
- Indiana University School of Medicine, 12250, Anesthesia, Indianapolis, Indiana, United States
| | - Andrea L Frump
- Indiana University School of Medicine, Division of Pulmonary, Allergy, Critical Care and Occupational Medicine, Indianapolis, Indiana, United States
| | - Anna Coleman
- Cincinnati Children's Hospital Medical Center, 2518, Division of Human Genetics, Cincinnati, Ohio, United States
| | - Yanan Sun
- First Affiliated Hospital of Guangzhou Medical University, 117969, State Key Laboratory of Respiratory Disease, Guangzhou, Guangdong, China.,Northwest A&F University, 12469, College of Veterinary Medicine, Yangling, Shaanxi, China
| | - Shuxin Liang
- First Affiliated Hospital of Guangzhou Medical University, 117969, State Key Laboratory of Respiratory Disease, Guangzhou, Guangdong, China
| | - Howard Crawford
- Henry Ford Health System, 2971, Henry Ford Pancreatic Cancer Center, Detroit, Michigan, United States
| | - Katie A Lutz
- Cincinnati Children's Hospital Medical Center, 2518, Cincinnati, Ohio, United States
| | - Avinash D Maun
- Indiana University School of Medicine, 12250, Medicine, Indianapolis, Indiana, United States
| | - Michael W Pauciulo
- Cincinnati Children's Hospital Medical Center, 2518, Cincinnati, Ohio, United States
| | - Jason H Karnes
- University of Arizona College of Pharmacy, 15498, Pharmacy Practice and Science, Tucson, Arizona, United States
| | - Ketul R Chaudhary
- Dalhousie University, 3688, Physiology and Biophysics, Halifax, Nova Scotia, Canada
| | - Duncan J Stewart
- Ottawa Hospital Research Institute, 10055, Regenerative Medicine, Ottawa, Ontario, Canada.,University of Ottawa, 6363, Cellular and Molecular Medicine, Ottawa, Ontario, Canada
| | | | - Mohit Jain
- University of California San Diego, 8784, Medicine, La Jolla, California, United States
| | - Mona Alotaibi
- University of California San Diego, 8784, Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, La Jolla, California, United States
| | - Tim Lahm
- Indiana University School of Medicine, 12250, Medicine, Indianapolis, Indiana, United States.,Richard L. Roudebush Veterans Affairs Medical Center, Indianapolis, Indiana, United States
| | - Yan Jin
- Florida International University, Center for Translational Science, Port Saint Lucie, Florida, United States.,Florida International University, 5450, Department of Environmental Health Sciences, Miami, Florida, United States
| | - Haiwei Gu
- Florida International University, Center for Translational Science, Port Saint Lucie, Florida, United States.,Florida International University, 5450, Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Miami, Florida, United States
| | - Haiyang Tang
- The First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, Guangzhou, China
| | - William C Nichols
- Cincinnati Children's Hospital Medical Center, Division of Human Genetics, Cincinnati, Ohio, United States
| | - Stephen M Black
- Florida International University, Center for Translational Science, Port Saint Lucie, Florida, United States.,Florida International University, 5450, Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Miami, Florida, United States.,Florida International University, 5450, Herbert Wertheim College of Medicine, Miami, Florida, United States
| | - Ankit A Desai
- Indiana University, Medicine, Indianapolis, Indiana, United States;
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17
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Liang S, Bao C, Yang Z, Liu S, Sun Y, Cao W, Wang T, Schwantes-An TH, Choy JS, Naidu S, Luo A, Yin W, Black SM, Wang J, Ran P, Desai AA, Tang H. SARS-CoV-2 spike protein induces IL-18-mediated cardiopulmonary inflammation via reduced mitophagy. Signal Transduct Target Ther 2023; 8:108. [PMID: 36894537 PMCID: PMC9998025 DOI: 10.1038/s41392-023-01368-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 01/22/2023] [Accepted: 02/13/2023] [Indexed: 03/11/2023] Open
Abstract
Cardiopulmonary complications are major drivers of mortality caused by the SARS-CoV-2 virus. Interleukin-18, an inflammasome-induced cytokine, has emerged as a novel mediator of cardiopulmonary pathologies but its regulation via SARS-CoV-2 signaling remains unknown. Based on a screening panel, IL-18 was identified amongst 19 cytokines to stratify mortality and hospitalization burden in patients hospitalized with COVID-19. Supporting clinical data, administration of SARS-CoV-2 Spike 1 (S1) glycoprotein or receptor-binding domain (RBD) proteins into human angiotensin-converting enzyme 2 (hACE2) transgenic mice induced cardiac fibrosis and dysfunction associated with higher NF-κB phosphorylation (pNF-κB) and cardiopulmonary-derived IL-18 and NLRP3 expression. IL-18 inhibition via IL-18BP resulted in decreased cardiac pNF-κB and improved cardiac fibrosis and dysfunction in S1- or RBD-exposed hACE2 mice. Through in vivo and in vitro work, both S1 and RBD proteins induced NLRP3 inflammasome and IL-18 expression by inhibiting mitophagy and increasing mitochondrial reactive oxygenation species. Enhancing mitophagy prevented Spike protein-mediated IL-18 expression. Moreover, IL-18 inhibition reduced Spike protein-mediated pNF-κB and EC permeability. Overall, the link between reduced mitophagy and inflammasome activation represents a novel mechanism during COVID-19 pathogenesis and suggests IL-18 and mitophagy as potential therapeutic targets.
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Affiliation(s)
- Shuxin Liang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Changlei Bao
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Zi Yang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Shiyun Liu
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Yanan Sun
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Weitao Cao
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Ting Wang
- Department of Cellular Biology & Pharmacology, Herbert Wertheim College of Medicine, Miami, FL, USA
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work and Center for Translational Science, Florida International University, Port St. Lucie, FL, USA
| | - Tae-Hwi Schwantes-An
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - John S Choy
- Department of Biology, The Catholic University of America, Washington, DC, USA
| | - Samisubbu Naidu
- Krannert Institute of Cardiology, Department of Medicine, Indiana University, Indianapolis, IN, USA
| | - Ang Luo
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Wenguang Yin
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Stephen M Black
- Department of Cellular Biology & Pharmacology, Herbert Wertheim College of Medicine, Miami, FL, USA
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work and Center for Translational Science, Florida International University, Port St. Lucie, FL, USA
| | - Jian Wang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Pixin Ran
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
- Guangzhou Laboratory, Guangzhou, China
| | - Ankit A Desai
- Krannert Institute of Cardiology, Department of Medicine, Indiana University, Indianapolis, IN, USA.
| | - Haiyang Tang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
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18
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Bao C, Liang S, Han Y, Yang Z, Liu S, Sun Y, Zheng S, Li Y, Wang T, Gu Y, Wu K, Black SM, Wang J, Nawrocki ST, Carew JS, Yuan JXJ, Tang H. The Novel Lysosomal Autophagy Inhibitor (ROC-325) Ameliorates Experimental Pulmonary Hypertension. Hypertension 2023; 80:70-83. [PMID: 36345832 DOI: 10.1161/hypertensionaha.122.19397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
BACKGROUND Autophagy plays an important role in the pathogenesis of pulmonary hypertension (PH). ROC-325 is a novel small molecule lysosomal autophagy inhibitor that has more potent anticancer activity than the antimalarial drug hydroxychloroquine, the latter has been prevalently used to inhibit autophagy. Here, we sought to determine the therapeutic benefit and mechanism of action of ROC-325 in experimental PH models. METHODS AND RESULTS Hemodynamics, echocardiography, and histology measurement showed that ROC-325 treatment prevented the development of PH, right ventricular hypertrophy, fibrosis, dysfunction, and vascular remodeling after monocrotaline and Sugen5416/hypoxia administration. ROC-325 attenuated high K+ or alveolar hypoxia-induced pulmonary vasoconstriction and enhanced endothelial-dependent relaxation in isolated pulmonary artery rings. ROC-325 treatment inhibited autophagy and enhanced endothelial nitric oxide synthase activity in lung tissues of monocrotaline-PH rats. In cultured human and rat pulmonary arterial smooth muscle cell and pulmonary arterial endothelial cell under hypoxia exposure, ROC-325 increased LC3B (light chain 3 beta) and p62 accumulation, endothelial cell nitric oxide production via phosphorylation of endothelial nitric oxide synthase (Ser1177) and dephosphorylation of endothelial nitric oxide synthase (Thr495) as well as decreased HIF (hypoxia-inducible factor)-1α and HIF-2α stabilization. CONCLUSIONS These data indicate that ROC-325 is a promising novel agent for the treatment of PH that inhibits autophagy, downregulates HIF levels, and increases nitric oxide production.
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Affiliation(s)
- Changlei Bao
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, China (C.B., S.L., Z.Y., S.L., Y.S., S.Z., Y.L., K.W., J.W., H.T.).,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China (C.B., S.L., Y.S., S.Z.)
| | - Shuxin Liang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, China (C.B., S.L., Z.Y., S.L., Y.S., S.Z., Y.L., K.W., J.W., H.T.)
| | - Ying Han
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, and Department of Physiology, Nanjing Medical University, China (Y.H.)
| | - Zi Yang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, China (C.B., S.L., Z.Y., S.L., Y.S., S.Z., Y.L., K.W., J.W., H.T.)
| | - Shiyun Liu
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, China (C.B., S.L., Z.Y., S.L., Y.S., S.Z., Y.L., K.W., J.W., H.T.).,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China (C.B., S.L., Y.S., S.Z.)
| | - Yanan Sun
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, China (C.B., S.L., Z.Y., S.L., Y.S., S.Z., Y.L., K.W., J.W., H.T.).,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China (C.B., S.L., Y.S., S.Z.)
| | - Shichuang Zheng
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, China (C.B., S.L., Z.Y., S.L., Y.S., S.Z., Y.L., K.W., J.W., H.T.).,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China (C.B., S.L., Y.S., S.Z.)
| | - Yuzhu Li
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, China (C.B., S.L., Z.Y., S.L., Y.S., S.Z., Y.L., K.W., J.W., H.T.)
| | - Ting Wang
- Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine, Miami, FL (T.W., S.M.B.).,Center for Translational Science and Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Port St. Lucie, FL (T.W., S.M.B.)
| | - Yali Gu
- Banner University of Arizona Medical Center, Tucson, AZ (Y.G.)
| | - Kang Wu
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, China (C.B., S.L., Z.Y., S.L., Y.S., S.Z., Y.L., K.W., J.W., H.T.)
| | - Stephen M Black
- Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine, Miami, FL (T.W., S.M.B.).,Center for Translational Science and Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Port St. Lucie, FL (T.W., S.M.B.)
| | - Jian Wang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, China (C.B., S.L., Z.Y., S.L., Y.S., S.Z., Y.L., K.W., J.W., H.T.)
| | | | - Jennifer S Carew
- University of Arizona Cancer Center, Tucson, AZ (S.T.N., J.S.C.)
| | - Jason X-J Yuan
- Department of Medicine, University of California, San Diego, La Jolla, CA (J.X.-J.)
| | - Haiyang Tang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, China (C.B., S.L., Z.Y., S.L., Y.S., S.Z., Y.L., K.W., J.W., H.T.)
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19
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Garcia-Flores AE, Gross CM, Zemskov EA, Lu Q, Tieu K, Wang T, Black SM. Loss of SOX18/CLAUDIN5 disrupts the pulmonary endothelial barrier in ventilator-induced lung injury. Front Physiol 2022; 13:1066515. [PMID: 36620216 PMCID: PMC9813411 DOI: 10.3389/fphys.2022.1066515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 12/07/2022] [Indexed: 12/24/2022] Open
Abstract
Mechanical strain contributes to ventilator-induced lung injury (VILI) through multi-factorial and complex mechanisms that remain unresolved. Prevailing evidence suggests that the loss of pulmonary endothelial tight junctions (TJs) plays a critical role. TJs are dynamically regulated by physiologic and hemodynamic forces to stabilize the endothelial barrier. The transcription factor sex-determining region Y-box (SOX)-18 is important in regulating blood vessel development and vascular permeability through its ability to regulate the transcription of Claudin-5, an endothelial TJ protein. Previously, we demonstrated that SOX18 expression is increased by shear stress in the pulmonary endothelium. Therefore, in this study, we investigated how mechanical strain mediated through cyclic stretch affects the SOX18/Claudin-5 regulatory axis. Our data demonstrate that SOX18 and Claudin-5 are downregulated in human lung microvascular endothelial cells (HLMVEC) exposed to cyclic stretch and the mouse lung exposed to high tidal mechanical ventilation. Overexpression of SOX18 reduced the loss of Claudin-5 expression in HLMVEC with cyclic stretch and preserved endothelial barrier function. Additionally, overexpression of Claudin-5 in HLMVEC ameliorated barrier dysfunction in HLMVEC exposed to cyclic stretch, although SOX18 expression was not enhanced. Finally, we found that the targeted overexpression of SOX18 in the pulmonary vasculature preserved Claudin-5 expression in the lungs of mice exposed to HTV. This, in turn reduced lung vascular leak, attenuated inflammatory lung injury, and preserved lung function. Together, these data suggest that enhancing SOX18 expression may prove a useful therapy to treat patients with ventilator-induced lung injury.
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Affiliation(s)
| | - Christine M. Gross
- Vascular Biology Center, Augusta University, Augusta, GA, United States,Department of Medicine at Washington Hospital Center, Washington, DC, United States
| | - Evgeny A. Zemskov
- Florida International University, Center for Translational Science, Miami, FL, United States,Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine Florida International University, Miami, FL, United States
| | - Qing Lu
- Florida International University, Center for Translational Science, Miami, FL, United States,Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine Florida International University, Miami, FL, United States
| | - Kim Tieu
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work Florida International University, Miami, FL, United States
| | - Ting Wang
- Florida International University, Center for Translational Science, Miami, FL, United States,Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work Florida International University, Miami, FL, United States
| | - Stephen M. Black
- Florida International University, Center for Translational Science, Miami, FL, United States,Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine Florida International University, Miami, FL, United States,Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work Florida International University, Miami, FL, United States,*Correspondence: Stephen M. Black,
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20
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Ackermann M, Kamp JC, Werlein C, Walsh CL, Stark H, Prade V, Surabattula R, Wagner WL, Disney C, Bodey AJ, Illig T, Leeming DJ, Karsdal MA, Tzankov A, Boor P, Kühnel MP, Länger FP, Verleden SE, Kvasnicka HM, Kreipe HH, Haverich A, Black SM, Walch A, Tafforeau P, Lee PD, Hoeper MM, Welte T, Seeliger B, David S, Schuppan D, Mentzer SJ, Jonigk DD. The fatal trajectory of pulmonary COVID-19 is driven by lobular ischemia and fibrotic remodelling. EBioMedicine 2022; 85:104296. [PMID: 36206625 PMCID: PMC9535314 DOI: 10.1016/j.ebiom.2022.104296] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/14/2022] [Accepted: 09/16/2022] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND COVID-19 is characterized by a heterogeneous clinical presentation, ranging from mild symptoms to severe courses of disease. 9-20% of hospitalized patients with severe lung disease die from COVID-19 and a substantial number of survivors develop long-COVID. Our objective was to provide comprehensive insights into the pathophysiology of severe COVID-19 and to identify liquid biomarkers for disease severity and therapy response. METHODS We studied a total of 85 lungs (n = 31 COVID autopsy samples; n = 7 influenza A autopsy samples; n = 18 interstitial lung disease explants; n = 24 healthy controls) using the highest resolution Synchrotron radiation-based hierarchical phase-contrast tomography, scanning electron microscopy of microvascular corrosion casts, immunohistochemistry, matrix-assisted laser desorption ionization mass spectrometry imaging, and analysis of mRNA expression and biological pathways. Plasma samples from all disease groups were used for liquid biomarker determination using ELISA. The anatomic/molecular data were analyzed as a function of patients' hospitalization time. FINDINGS The observed patchy/mosaic appearance of COVID-19 in conventional lung imaging resulted from microvascular occlusion and secondary lobular ischemia. The length of hospitalization was associated with increased intussusceptive angiogenesis. This was associated with enhanced angiogenic, and fibrotic gene expression demonstrated by molecular profiling and metabolomic analysis. Increased plasma fibrosis markers correlated with their pulmonary tissue transcript levels and predicted disease severity. Plasma analysis confirmed distinct fibrosis biomarkers (TSP2, GDF15, IGFBP7, Pro-C3) that predicted the fatal trajectory in COVID-19. INTERPRETATION Pulmonary severe COVID-19 is a consequence of secondary lobular microischemia and fibrotic remodelling, resulting in a distinctive form of fibrotic interstitial lung disease that contributes to long-COVID. FUNDING This project was made possible by a number of funders. The full list can be found within the Declaration of interests / Acknowledgements section at the end of the manuscript.
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Affiliation(s)
- Maximilian Ackermann
- Institute of Pathology and Molecular Pathology, Helios University Clinic Wuppertal, University of Witten/Herdecke, Germany
- Institute of Functional and Clinical Anatomy, University Medical Center of the Johannes Gutenberg-University Mainz, Germany
| | - Jan C. Kamp
- Department of Respiratory Medicine, Hannover Medical School, Hannover, Germany
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
| | - Christopher Werlein
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
- Institute of Pathology, Hannover Medical School, Hannover, Germany
| | - Claire L. Walsh
- Centre for Advanced Biomedical Imaging, University College London, UK
| | - Helge Stark
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
- Institute of Pathology, Hannover Medical School, Hannover, Germany
| | - Verena Prade
- Research Unit Analytical Pathology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - Rambabu Surabattula
- Institute of Translational Immunology and Research Center for Immune Therapy, University Medical Center, Johannes Gutenberg University, Mainz, Germany
| | - Willi L. Wagner
- Department of Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
- Member of the German Center for Lung Research (DZL), Translational Lung Research Center Heidelberg (TLRC), Heidelberg, Germany
| | - Catherine Disney
- Department of Mechanical Engineering, University College London, UK
| | | | - Thomas Illig
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
- Hannover Unified Biobank, Hannover Medical School, Hannover Medical School, Germany
| | - Diana J. Leeming
- Hannover Unified Biobank, Hannover Medical School, Hannover Medical School, Germany
| | | | - Alexandar Tzankov
- Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Switzerland
| | - Peter Boor
- Institute of Pathology, RWTH Aachen University Hospital, Aachen, Germany
| | - Mark P. Kühnel
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
- Institute of Pathology, Hannover Medical School, Hannover, Germany
| | - Florian P. Länger
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
- Institute of Pathology, Hannover Medical School, Hannover, Germany
| | - Stijn E. Verleden
- Department of Thoracic Surgery, University Hospital Antwerp Edegem, Belgium
| | - Hans M. Kvasnicka
- Institute of Pathology and Molecular Pathology, Helios University Clinic Wuppertal, University of Witten/Herdecke, Germany
| | - Hans H. Kreipe
- Institute of Pathology, Hannover Medical School, Hannover, Germany
| | - Axel Haverich
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
- Department of Cardiothoracic, Transplantation, and Vascular Surgery, Hannover Medical School, Germany
| | - Stephen M. Black
- Department of Cellular Biology and Pharmacology, Center for Translational Research, Florida International University, USA
| | - Axel Walch
- Nordic Bioscience Biomarkers and Research, Herlev, Denmark
| | - Paul Tafforeau
- European Synchrotron Radiation Facility, Grenoble, France
| | - Peter D. Lee
- Hannover Unified Biobank, Hannover Medical School, Hannover Medical School, Germany
| | - Marius M. Hoeper
- Department of Respiratory Medicine, Hannover Medical School, Hannover, Germany
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
| | - Tobias Welte
- Department of Respiratory Medicine, Hannover Medical School, Hannover, Germany
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
| | - Benjamin Seeliger
- Department of Respiratory Medicine, Hannover Medical School, Hannover, Germany
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
| | - Sascha David
- Institute of Intensive Care Medicine, University Hospital Zurich, Zurich, Switzerland
| | - Detlef Schuppan
- Institute of Translational Immunology and Research Center for Immune Therapy, University Medical Center, Johannes Gutenberg University, Mainz, Germany
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - Steven J. Mentzer
- Laboratory of Adaptive and Regenerative Biology, Harvard Medical School, Brigham & Women's Hospital, Boston, United States
| | - Danny D. Jonigk
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Germany
- Institute of Pathology, Hannover Medical School, Hannover, Germany
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21
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Feng A, Simpson E, Wu J, Robinson T, Ma W, Tieu K, Black SM, Wang T. NAMPT-associated gene signature in the prediction of severe sepsis. Am J Transl Res 2022; 14:7090-7097. [PMID: 36398242 PMCID: PMC9641493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 09/01/2022] [Indexed: 02/16/2023]
Abstract
OBJECTIVE Sepsis is a life-threatening condition of severe organ dysfunction induced by uncontrolled infection and dysregulated host response. However, standardized clinical biomarkers for sepsis are needed to improve patient care, especially in intensive care units (ICUs). Nicotinamide phosphoribosyltransferase (NAMPT) regulates the activity of nicotinamide adenine dinucleotide (NAD)-dependent enzymes and modulates multiple metabolic pathways. Elevated NAMPT gene expression is a risk factor in the pathogenesis and development of sepsis, which is strongly linked to patient morbidity and ICU mortality. At present, there is no identified NAMPT gene signature for prognosis of sepsis patients. METHODS By analyzing gene expression profiles in peripheral blood mononuclear cells, this study was designed to establish a NAMPT-associated biomarker that effectively predicts survival in sepsis patients. RESULTS We obtained 19 common genes by intersecting NAMPT-associated genes and sepsis survival-related genes, and this 19-gene signature is significantly enriched in metabolic pathways and NF-κB pathways related to sepsis development. Notably, this 19-gene NAMPT signature was able to discriminate high-risk sepsis from low-risk sepsis in both discovery and validation cohorts. Furthermore, we confirmed that this 19-gene NAMPT signature performed significantly better for sepsis prognosis than random gene sets with 19 genes. CONCLUSIONS We identified a novel NAMPT gene signature with effective prognostic power for sepsis. Further studies focusing on these biomarkers may also provide an early intervention system for sepsis treatment.
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Affiliation(s)
- Anlin Feng
- Center for Translational Science, Florida International UniversityPort St. Lucie, Miami, FL, USA
| | - Emma Simpson
- Department of Internal Medicine, University of Arizona College of Medicine Phoenix475 N. 5th Street Phoenix, Phoenix 85004, AZ, USA
| | - Jialin Wu
- Center for Translational Science, Florida International UniversityPort St. Lucie, Miami, FL, USA
| | - Tasleem Robinson
- Center for Translational Science, Florida International UniversityPort St. Lucie, Miami, FL, USA
| | - Wenli Ma
- Center for Translational Science, Florida International UniversityPort St. Lucie, Miami, FL, USA
| | - Kim Tieu
- Department of Environmental Health Sciences, Florida International UniversityMiami, FL, USA
| | - Stephen M Black
- Center for Translational Science, Florida International UniversityPort St. Lucie, Miami, FL, USA,Department of Environmental Health Sciences, Florida International UniversityMiami, FL, USA
| | - Ting Wang
- Center for Translational Science, Florida International UniversityPort St. Lucie, Miami, FL, USA,Department of Internal Medicine, University of Arizona College of Medicine Phoenix475 N. 5th Street Phoenix, Phoenix 85004, AZ, USA,Department of Environmental Health Sciences, Florida International UniversityMiami, FL, USA
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22
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Zemskov EA, Gross CM, Aggarwal S, Zemskova MA, Wu X, Gu C, Wang T, Tang H, Black SM. NF-κB-dependent repression of Sox18 transcription factor requires the epigenetic regulators histone deacetylases 1 and 2 in acute lung injury. Front Physiol 2022; 13:947537. [PMID: 35991176 PMCID: PMC9386230 DOI: 10.3389/fphys.2022.947537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 07/11/2022] [Indexed: 11/30/2022] Open
Abstract
In acute lung injury (ALI), the NF-κB-mediated downregulation of Sox18 gene expression leads to the disruption of the pulmonary endothelial barrier. Previous studies have suggested that the action of NF-κB as a transcriptional repressor also requires the action of class I histone deacetylases (HDACs). Thus, the purpose of this study was to investigate and further delineate the mechanism of Sox18 repression during lipopolysaccharide (LPS) induced ALI. Using selective inhibitors and specific siRNA-driven depletion of HDACs 1-3 in human lung microvascular endothelial cells (HLMVEC) we were able to demonstrate a critical role for HDACs 1 and 2 in the LPS-mediated repression of Sox18 gene expression and the loss of endothelial monolayer integrity. Moreover, our data demonstrate that HDAC1 associates with a transcription-repressive complex within the NF-κB-binding site of Sox18 promoter. Further, we were able to show that the selective inhibitor of HDAC1, tacedinaline, significantly reduced the endothelial permeability and injury associated with LPS challenge in the mouse lung. Taken together, our data demonstrate, for the first time, that transcription repressors HDACs 1 and 2 are involved in pathological mechanism of ALI and can be considered as therapeutic targets.
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Affiliation(s)
- Evgeny A. Zemskov
- Center for Translational Science, Florida International University, Port St. Lucie, FL, United States
- Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States
- *Correspondence: Evgeny A. Zemskov,
| | - Christine M. Gross
- Department of Medicine at Broward Health Medical Center, Fort Lauderdale, FL, United States
| | - Saurabh Aggarwal
- Department of Anesthesiology, The University of Alabama, Birmingham, AL, United States
| | - Marina A. Zemskova
- Center for Translational Science, Florida International University, Port St. Lucie, FL, United States
| | - Xiaomin Wu
- Department of Medicine, The University of Arizona Health Sciences, Tucson, AZ, United States
| | - Chenxin Gu
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Ting Wang
- Center for Translational Science, Florida International University, Port St. Lucie, FL, United States
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, United States
| | - Haiyang Tang
- Center for Translational Science, Florida International University, Port St. Lucie, FL, United States
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, United States
| | - Stephen M. Black
- Center for Translational Science, Florida International University, Port St. Lucie, FL, United States
- Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, United States
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23
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Bertero T, Lu Y, Annis S, Hale A, Bhat B, Saggar R, Saggar R, Wallace WD, Ross DJ, Vargas SO, Graham BB, Kumar R, Black SM, Fratz S, Fineman JR, West JD, Haley KJ, Waxman AB, Chau BN, Cottrill KA, Chan SY. Systems-level regulation of microRNA networks by miR-130/301 promotes pulmonary hypertension. J Clin Invest 2022; 132:161077. [PMID: 35575096 PMCID: PMC9106337 DOI: 10.1172/jci161077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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24
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Zhu J, Chen J, Wang J, Desai AA, Black SM, Tang H. Editorial: Pathophysiology and Pathogenic Mechanisms of Pulmonary Vascular Disease. Front Physiol 2022; 13:854265. [PMID: 35370763 PMCID: PMC8975545 DOI: 10.3389/fphys.2022.854265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 01/31/2022] [Indexed: 12/02/2022] Open
Affiliation(s)
- Jinsheng Zhu
- State Key Laboratory of Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China
| | - Jiwang Chen
- Department of Medicine, University of Illinois at Chicago, Chicago, IL, United States
- Cardiovascular Research Center, University of Illinois at Chicago, Chicago, IL, United States
| | - Jian Wang
- State Key Laboratory of Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Ankit A. Desai
- Department of Medicine, Krannert Institute of Cardiology, Indiana University, Indianapolis, IN, United States
| | - Stephen M. Black
- Department of Cellular Biology & Pharmacology, Herbert Wertheim College of Medicine, Miami, FL, United States
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, University Park, FL, United States
- Center for Translational Science, Florida International University, Port St. Lucie, FL, United States
| | - Haiyang Tang
- State Key Laboratory of Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- *Correspondence: Haiyang Tang
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25
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Feng A, Ma W, Faraj R, Black SM, Wang T. SOX18-associated gene signature predicts sepsis outcome. Am J Transl Res 2022; 14:1807-1817. [PMID: 35422958 PMCID: PMC8991122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 11/10/2021] [Indexed: 06/14/2023]
Abstract
OBJECTIVES Sepsis is a critical medical condition associated with an high mortality. Currently, there are no reliable diagnostic or prognostic biomarkers to evaluate sepsis outcomes. SRY (sex-determining region on the Y chromosome)-box transcription factor 18 (SOX18) is an endothelial barrier protective protein, and a decreased level of SOX18 expression is involved in disruption of human endothelial cell barrier integrity. Over-expression of SOX18 attenuates the bacterial lipopolysaccharide (LPS)-mediated disruption of the vascular barrier and is associated with favorable prognosis. The utility of SOX18-related genes as biomarkers in sepsis is uncertain. METHODS Transcriptomic analysis was used to profile the PBMC samples of patients with sepsis across two Gene Expression Omnibus (GEO) datasets with survival data. An 84-gene signature was derived from discovery datasets that correlated with SOX18 gene expression and sepsis survival. RESULTS Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis revealed Th1 and Th2 cell differentiation, Cytokine-cytokine receptor interaction, and T cell receptor signaling pathways as the most significantly enriched KEGG pathways among 84 genes. A severity score based on the gene expression of 84 genes was allocated to each patient. A notable increase was detected in sepsis patients compared to healthy controls in both discovery and validation cohorts. SOX18-associated gene signature discriminated severe cases from mild cases and performed significantly better than both random 84-gene sets from whole genomes or sepsis survival-related genes. Furthermore, we obtained an 18-gene signature from screening these 84 genes in a LASSO model, which performed better in both discovery and validation cohorts. CONCLUSIONS Data support SOX18-associated gene signatures as a prognostic biomarker for sepsis.
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Affiliation(s)
- Anlin Feng
- Center of Translational Science, Florida International UniversityPort St. Lucie, FL 34987, USA
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Howard Wertheim College of Medicine, Florida International UniversityMiami, FL 33199, USA
- Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International UniversityMiami, FL 33199, USA
| | - Wenli Ma
- Center of Translational Science, Florida International UniversityPort St. Lucie, FL 34987, USA
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Howard Wertheim College of Medicine, Florida International UniversityMiami, FL 33199, USA
- Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International UniversityMiami, FL 33199, USA
| | - Reem Faraj
- Center of Translational Science, Florida International UniversityPort St. Lucie, FL 34987, USA
- Graduate Program of Clinical and Translational Sciences, University of ArizonaPhoenix, AZ 85004, USA
| | - Stephen M Black
- Center of Translational Science, Florida International UniversityPort St. Lucie, FL 34987, USA
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Howard Wertheim College of Medicine, Florida International UniversityMiami, FL 33199, USA
- Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International UniversityMiami, FL 33199, USA
| | - Ting Wang
- Center of Translational Science, Florida International UniversityPort St. Lucie, FL 34987, USA
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Howard Wertheim College of Medicine, Florida International UniversityMiami, FL 33199, USA
- Department of Cellular Biology & Pharmacology, Howard Wertheim College of Medicine, Florida International UniversityMiami, FL 33199, USA
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26
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Zhang L, Li Y, Wang J, Hong C, Lu W, Qu Y, Black SM, Chen Q, Zhou T, Jin W, Duan E, Tang H, Zhang Y. RNA Modification Signature of Peripheral Blood as a Potential Diagnostic Marker for Pulmonary Hypertension. Hypertension 2022; 79:e67-e69. [PMID: 35012324 PMCID: PMC9403405 DOI: 10.1161/hypertensionaha.121.18724] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Liwen Zhang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China,The Key Laboratory of Cell Proliferation and Regulation Biology, Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing, 100875, China,University of Chinese Academy of Sciences, Beijing, China
| | - Yuzhu Li
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
| | - Jian Wang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
| | - Cheng Hong
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
| | - Wenju Lu
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
| | - Yongcun Qu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China,University of Chinese Academy of Sciences, Beijing, China
| | - Stephen M Black
- Center for Translational Science, Florida International University, Port St. Lucie, FL, USA
| | - Qi Chen
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, CA, 92521, USA
| | - Tong Zhou
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, Nevada 89557, USA
| | - Wanzhu Jin
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Enkui Duan
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China,Henan Key Laboratory of Fertility Protection and Aristogenesis, Luohe, Henan, 462000, China
| | - Haiyang Tang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China,Corresponding authors: Haiyang Tang (), Ying Zhang ()
| | - Ying Zhang
- The Key Laboratory of Cell Proliferation and Regulation Biology, Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing, 100875, China,Corresponding authors: Haiyang Tang (), Ying Zhang ()
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27
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Liang S, Yegambaram M, Wang T, Wang J, Black SM, Tang H. Mitochondrial Metabolism, Redox, and Calcium Homeostasis in Pulmonary Arterial Hypertension. Biomedicines 2022; 10:biomedicines10020341. [PMID: 35203550 PMCID: PMC8961787 DOI: 10.3390/biomedicines10020341] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/25/2022] [Accepted: 01/26/2022] [Indexed: 02/06/2023] Open
Abstract
Pulmonary arterial hypertension (PAH) is a progressive disease characterized by elevated pulmonary arterial pressure due to increased pulmonary vascular resistance, secondary to sustained pulmonary vasoconstriction and excessive obliterative pulmonary vascular remodeling. Work over the last decade has led to the identification of a critical role for metabolic reprogramming in the PAH pathogenesis. It is becoming clear that in addition to its role in ATP generation, the mitochondrion is an important organelle that regulates complex and integrative metabolic- and signal transduction pathways. This review focuses on mitochondrial metabolism alterations that occur in deranged pulmonary vessels and the right ventricle, including abnormalities in glycolysis and glucose oxidation, fatty acid oxidation, glutaminolysis, redox homeostasis, as well as iron and calcium metabolism. Further understanding of these mitochondrial metabolic mechanisms could provide viable therapeutic approaches for PAH patients.
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Affiliation(s)
- Shuxin Liang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China; (S.L.); (J.W.)
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China
| | - Manivannan Yegambaram
- Center for Translational Science, 11350 SW Village Pkwy, Port St. Lucie, FL 34987, USA; (M.Y.); (T.W.)
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Port St. Lucie, FL 34987, USA
| | - Ting Wang
- Center for Translational Science, 11350 SW Village Pkwy, Port St. Lucie, FL 34987, USA; (M.Y.); (T.W.)
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Port St. Lucie, FL 34987, USA
| | - Jian Wang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China; (S.L.); (J.W.)
| | - Stephen M. Black
- Center for Translational Science, 11350 SW Village Pkwy, Port St. Lucie, FL 34987, USA; (M.Y.); (T.W.)
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Port St. Lucie, FL 34987, USA
- Department of Cellular Biology & Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Port St. Lucie, FL 34987, USA
- Correspondence: (S.M.B.); (H.T.)
| | - Haiyang Tang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China; (S.L.); (J.W.)
- Correspondence: (S.M.B.); (H.T.)
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Muralidharan P, Hayes D, Fineman JR, Black SM, Mansour HM. Advanced Microparticulate/Nanoparticulate Respirable Dry Powders of a Selective RhoA/Rho Kinase (Rock) Inhibitor for Targeted Pulmonary Inhalation Aerosol Delivery. Pharmaceutics 2021; 13:2188. [PMID: 34959469 PMCID: PMC8707591 DOI: 10.3390/pharmaceutics13122188] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 12/02/2021] [Accepted: 12/03/2021] [Indexed: 11/26/2022] Open
Abstract
Pulmonary hypertension (PH) is a progressive disease that eventually leads to heart failure and potentially death for some patients. There are many unique advantages to treating pulmonary diseases directly and non-invasively by inhalation aerosols and dry powder inhalers (DPIs) possess additional unique advantages. There continues to be significant unmet medical needs in the effective treatment of PH that target the underlying mechanisms. To date, there is no FDA-approved DPI indicated for the treatment of PH. Fasudil is a novel RhoA/Rho kinase (ROCK) inhibitor that has shown great potential in effectively treating pulmonary hypertension. This systematic study is the first to report on the design and development of DPI formulations comprised of respirable nanoparticles/microparticles using particle engineering design by advanced spray drying. In addition, comprehensive physicochemical characterization, in vitro aerosol aerosol dispersion performance with different types of human DPI devices, in vitro cell-drug dose response cell viability of different human respiratory cells from distinct lung regions, and in vitro transepithelial electrical resistance (TEER) as air-interface culture (AIC) demonstrated that these innovative DPI fasudil formulations are safe on human lung cells and have high aerosol dispersion performance properties.
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Affiliation(s)
- Priya Muralidharan
- Department of Pharmaceutical Sciences, College of Pharmacy, The University of Arizona, Tucson, AZ 85721, USA;
| | - Don Hayes
- Departments of Pediatrics and Internal Medicine, Lung and Heart-Lung Transplant Programs, Nationwide Children’s Hospital, The Ohio State University College of Medicine, Columbus, OH 43205, USA;
| | - Jeffrey R. Fineman
- UCSF School of Medicine & Benioff Children’s Hospital, San Francisco, CA 94158, USA;
| | - Stephen M. Black
- Center for Translational Science, Florida International University, Port Saint Lucie, FL 34987, USA;
| | - Heidi M. Mansour
- Department of Pharmaceutical Sciences, College of Pharmacy, The University of Arizona, Tucson, AZ 85721, USA;
- Center for Translational Science, Florida International University, Port Saint Lucie, FL 34987, USA;
- The BIO5 Research Institute, The University of Arizona, Tucson, AZ 85721, USA
- Institute of the Environment, The University of Arizona, Tucson, AZ 85721, USA
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29
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Shi Y, Gu C, Zhao T, Jia Y, Bao C, Luo A, Guo Q, Han Y, Wang J, Black SM, Desai AA, Tang H. Combination Therapy With Rapamycin and Low Dose Imatinib in Pulmonary Hypertension. Front Pharmacol 2021; 12:758763. [PMID: 34858182 PMCID: PMC8632256 DOI: 10.3389/fphar.2021.758763] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Accepted: 10/25/2021] [Indexed: 11/16/2022] Open
Abstract
Rationale: Enhanced proliferation and distal migration of human pulmonary arterial smooth muscle cells (hPASMCs) both contribute to the progressive increases in pulmonary vascular remodeling and resistance in pulmonary arterial hypertension (PAH). Our previous studies revealed that Rictor deletion, to disrupt mTOR Complex 2 (mTORC2), over longer periods result in a paradoxical rise in platelet-derived growth factor receptor (PDGFR) expression in PASMCs. Thus, the purpose of this study was to evaluate the role of combination therapy targeting both mTOR signaling with PDGFR inhibition to attenuate the development and progression of PAH. Methods and Results: Immunoblotting analyses revealed that short-term exposure to rapamycin (6h) significantly reduced phosphorylation of p70S6K (mTORC1-specific) in hPASMCs but had no effect on the phosphorylation of AKT (p-AKT S473, considered mTORC2-specific). In contrast, longer rapamycin exposure (>24 h), resulted in differential AKT (T308) and AKT (S473) phosphorylation with increases in phosphorylation of AKT at T308 and decreased phosphorylation at S473. Phosphorylation of both PDGFRα and PDGFRβ was increased in hPASMCs after treatment with rapamycin for 48 and 72 h. Based on co-immunoprecipitation studies, longer exposure to rapamycin (24–72 h) significantly inhibited the binding of mTOR to Rictor, mechanistically suggesting mTORC2 inhibition by rapamycin. Combined exposure of rapamycin with the PDGFR inhibitor, imatinib significantly reduced the proliferation and migration of hPASMCs compared to either agent alone. Pre-clinical studies validated increased therapeutic efficacy of rapamycin combined with imatinib in attenuating PAH over either drug alone. Specifically, combination therapy further attenuated the development of monocrotaline (MCT)- or Hypoxia/Sugen-induced pulmonary hypertension (PH) in rats as demonstrated by further reductions in the Fulton index, right ventricular systolic pressure (RVSP), pulmonary vascular wall thickness and vessel muscularization, and decreased proliferating cell nuclear antigen (PCNA) staining in PASMCs. Conclusion: Prolonged rapamycin treatment activates PDGFR signaling, in part, via mTORC2 inhibition. Combination therapy with rapamycin and imatinib may be a more effective strategy for the treatment of PAH.
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Affiliation(s)
- Yinan Shi
- College of Veterinary Medicine, Northwest A&F University, Yangling, China.,Department of Medicine, Krannert Institute of Cardiology, Indiana University, Indianapolis, IN, United States
| | - Chenxin Gu
- College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Tongtong Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Yangfan Jia
- College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Changlei Bao
- College of Veterinary Medicine, Northwest A&F University, Yangling, China.,State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Ang Luo
- College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Qiang Guo
- Department of Critical Care Medicine, Suzhou Dushu Lake Hospital, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Ying Han
- Department of Physiology, Nanjing Medical University, Nanjing, China
| | - Jian Wang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Stephen M Black
- Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine, Miami, FL, United States.,Department of Environmental Health Sciences, Center for Translational Science, Robert Stempel College of Public Health and Social Work, Florida International University, Port St. Lucie, FL, United States
| | - Ankit A Desai
- Department of Medicine, Krannert Institute of Cardiology, Indiana University, Indianapolis, IN, United States
| | - Haiyang Tang
- College of Veterinary Medicine, Northwest A&F University, Yangling, China.,State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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30
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Wang Z, Chen J, Babicheva A, Jain PP, Rodriguez M, Ayon RJ, Ravellette KS, Wu L, Balistrieri F, Tang H, Wu X, Zhao T, Black SM, Desai AA, Garcia JGN, Sun X, Shyy JYJ, Valdez-Jasso D, Thistlethwaite PA, Makino A, Wang J, Yuan JXJ. Endothelial upregulation of mechanosensitive channel Piezo1 in pulmonary hypertension. Am J Physiol Cell Physiol 2021; 321:C1010-C1027. [PMID: 34669509 DOI: 10.1152/ajpcell.00147.2021] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Piezo is a mechanosensitive cation channel responsible for stretch-mediated Ca2+ and Na+ influx in multiple types of cells. Little is known about the functional role of Piezo1 in the lung vasculature and its potential pathogenic role in pulmonary arterial hypertension (PAH). Pulmonary arterial endothelial cells (PAECs) are constantly under mechanic stretch and shear stress that are sufficient to activate Piezo channels. Here, we report that Piezo1 is significantly upregulated in PAECs from patients with idiopathic PAH and animals with experimental pulmonary hypertension (PH) compared with normal controls. Membrane stretch by decreasing extracellular osmotic pressure or by cyclic stretch (18% CS) increases Ca2+-dependent phosphorylation (p) of AKT and ERK, and subsequently upregulates expression of Notch ligands, Jagged1/2 (Jag-1 and Jag-2), and Delta like-4 (DLL4) in PAECs. siRNA-mediated downregulation of Piezo1 significantly inhibited the stretch-mediated pAKT increase and Jag-1 upregulation, whereas downregulation of AKT by siRNA markedly attenuated the stretch-mediated Jag-1 upregulation in human PAECs. Furthermore, the mRNA and protein expression level of Piezo1 in the isolated pulmonary artery, which mainly contains pulmonary arterial smooth muscle cells (PASMCs), from animals with severe PH was also significantly higher than that from control animals. Intraperitoneal injection of a Piezo1 channel blocker, GsMTx4, ameliorated experimental PH in mice. Taken together, our study suggests that membrane stretch-mediated Ca2+ influx through Piezo1 is an important trigger for pAKT-mediated upregulation of Jag-1 in PAECs. Upregulation of the mechanosensitive channel Piezo1 and the resultant increase in the Notch ligands (Jag-1/2 and DLL4) in PAECs may play a critical pathogenic role in the development of pulmonary vascular remodeling in PAH and PH.
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Affiliation(s)
- Ziyi Wang
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, grid.266100.3University of California, San Diego, La Jolla, California.,Departments of Medicine and Physiology, The University of Arizona College of Medicine, Tucson, Arizona.,State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jiyuan Chen
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, grid.266100.3University of California, San Diego, La Jolla, California.,State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Aleksandra Babicheva
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, grid.266100.3University of California, San Diego, La Jolla, California
| | - Pritesh P Jain
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, grid.266100.3University of California, San Diego, La Jolla, California
| | - Marisela Rodriguez
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, grid.266100.3University of California, San Diego, La Jolla, California.,Departments of Medicine and Physiology, The University of Arizona College of Medicine, Tucson, Arizona
| | - Ramon J Ayon
- Departments of Medicine and Physiology, The University of Arizona College of Medicine, Tucson, Arizona
| | - Keeley S Ravellette
- Departments of Medicine and Physiology, The University of Arizona College of Medicine, Tucson, Arizona
| | - Linda Wu
- Departments of Medicine and Physiology, The University of Arizona College of Medicine, Tucson, Arizona
| | - Francesca Balistrieri
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, grid.266100.3University of California, San Diego, La Jolla, California
| | - Haiyang Tang
- Departments of Medicine and Physiology, The University of Arizona College of Medicine, Tucson, Arizona.,State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiaomin Wu
- Departments of Medicine and Physiology, The University of Arizona College of Medicine, Tucson, Arizona
| | - Tengteng Zhao
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, grid.266100.3University of California, San Diego, La Jolla, California
| | - Stephen M Black
- Departments of Medicine and Physiology, The University of Arizona College of Medicine, Tucson, Arizona
| | - Ankit A Desai
- Departments of Medicine and Physiology, The University of Arizona College of Medicine, Tucson, Arizona.,Department of Medicine, Indiana University, Indianapolis, Indiana
| | - Joe G N Garcia
- Departments of Medicine and Physiology, The University of Arizona College of Medicine, Tucson, Arizona
| | - Xin Sun
- Department of Pediatrics, University of California, San Diego, La Jolla, California
| | - John Y-J Shyy
- Division of Cardiovascular Medicine, Department of Medicine, University of California, San Diego, La Jolla, California
| | - Daniela Valdez-Jasso
- Department of Bioengineering, University of California, San Diego, La Jolla, California
| | | | - Ayako Makino
- Division of Endocrinology and Metabolism, University of California, San Diego, La Jolla, California.,Departments of Medicine and Physiology, The University of Arizona College of Medicine, Tucson, Arizona
| | - Jian Wang
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, grid.266100.3University of California, San Diego, La Jolla, California.,State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jason X-J Yuan
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, grid.266100.3University of California, San Diego, La Jolla, California.,Departments of Medicine and Physiology, The University of Arizona College of Medicine, Tucson, Arizona
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Sun Y, Sangam S, Guo Q, Wang J, Tang H, Black SM, Desai AA. Sex Differences, Estrogen Metabolism and Signaling in the Development of Pulmonary Arterial Hypertension. Front Cardiovasc Med 2021; 8:719058. [PMID: 34568460 PMCID: PMC8460911 DOI: 10.3389/fcvm.2021.719058] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 08/11/2021] [Indexed: 01/08/2023] Open
Abstract
Pulmonary arterial hypertension (PAH) is a complex and devastating disease with a poor long-term prognosis. While women are at increased risk for developing PAH, they exhibit superior right heart function and higher survival rates than men. Susceptibility to disease risk in PAH has been attributed, in part, to estrogen signaling. In contrast to potential pathological influences of estrogen in patients, studies of animal models reveal estrogen demonstrates protective effects in PAH. Consistent with this latter observation, an ovariectomy in female rats appears to aggravate the condition. This discrepancy between observations from patients and animal models is often called the "estrogen paradox." Further, the tissue-specific interactions between estrogen, its metabolites and receptors in PAH and right heart function remain complex; nonetheless, these relationships are essential to characterize to better understand PAH pathophysiology and to potentially develop novel therapeutic and curative targets. In this review, we explore estrogen-mediated mechanisms that may further explain this paradox by summarizing published literature related to: (1) the synthesis and catabolism of estrogen; (2) activity and functions of the various estrogen receptors; (3) the multiple modalities of estrogen signaling in cells; and (4) the role of estrogen and its diverse metabolites on the susceptibility to, and progression of, PAH as well as their impact on right heart function.
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Affiliation(s)
- Yanan Sun
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Shreya Sangam
- Department of Medicine, Krannert Institute of Cardiology, Indiana University, Indianapolis, IN, United States
| | - Qiang Guo
- Department of Critical Care Medicine, Suzhou Dushu Lake Hospital, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jian Wang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Haiyang Tang
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Stephen M. Black
- Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine, Miami, FL, United States
- Center for Translational Science and Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Port St. Lucie, FL, United States
| | - Ankit A. Desai
- Department of Medicine, Krannert Institute of Cardiology, Indiana University, Indianapolis, IN, United States
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32
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Zhu J, Zhao L, Hu Y, Cui G, Luo A, Bao C, Han Y, Zhou T, Lu W, Wang J, Black SM, Tang H. Hypoxia-Inducible Factor 2-Alpha Mediated Gene Sets Differentiate Pulmonary Arterial Hypertension. Front Cell Dev Biol 2021; 9:701247. [PMID: 34422822 PMCID: PMC8375387 DOI: 10.3389/fcell.2021.701247] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 07/16/2021] [Indexed: 12/02/2022] Open
Abstract
OBJECTIVES HIF2α is of vital importance in the regulation of endothelial dysfunction, cell proliferation, migration, and pulmonary vascular remodeling in pulmonary hypertension. Our previous studies demonstrated that conditional and inducible deletion of HIF2α in mouse lung endothelial cells, dramatically protected the mice against vascular remodeling and the development of pulmonary arterial hypertension (PAH). Here, we provide a novel transcriptome insight into the impact of HIF2α in PAH pathogenesis and the potential to use HIF2α-mediated gene sets to differentiate PAH human subjects. METHODS Using transcriptome data, we first tapped the value of the difference in gene expression profile between wild type (WT) and Hif2a knockdown (KD) cell lines. We considered the deregulated genes between WT and Hif2a-KD cells as HIF2α influenced genes. By examining the lung tissue transcriptome data set with nine controls and eight PAH patients, we evaluated the HIF2α regulatory network in PAH pathogenesis to further determine the identification ability of HIF2α-mediated gene sets in human PAH subjects. On the other hand, using peripheral blood mononuclear cells (PBMCs) transcriptome data from PAH patients and healthy controls, we further validated the potential of the HIF2α-mediated PBMC gene sets as a possible diagnostic tool for PAH. To verify the ability of HIF2α-mediated gene sets for the identification of PAH, endothelial cell-specific Phd2 knockout mice with spontaneous pulmonary hypertension were used for reverse validation experiments. RESULTS 19 identified GO biological process terms were significantly correlated with the genes down-regulated in Hif2a-KD cells, all of which are strongly related to the PAH pathogenesis. We further assessed the discriminative power of these HIF2α-mediated gene sets in PAH human subjects. We found that the expression profile of the HIF2α-mediated gene sets in lung tissues and PBMCs were differentiated both between controls and PAH patients. Further, a significant positive correlation was observed between hypoxia and Phd2 deficiency mediated gene set expression profiles. As expected, 7 of the 19 significantly down-regulated GO terms in Hif2a-KD cells were found to overlap with the up-regulated GO gene sets in Phd2 EC-/- mice compared to WT controls, suggesting opposing effects of HIF2α and PHD2 on PAH pathogenesis. CONCLUSION HIF2α-mediated gene sets may be used to differentiate pulmonary arterial hypertension.
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Affiliation(s)
- Jinsheng Zhu
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China
| | - Li Zhao
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China
| | - Yadan Hu
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China
| | - Guoqi Cui
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China
| | - Ang Luo
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China
| | - Changlei Bao
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China
| | - Ying Han
- Department of Physiology, Nanjing Medical University, Nanjing, China
| | - Tong Zhou
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV, United States
| | - Wenju Lu
- State Key Laboratory of Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jian Wang
- State Key Laboratory of Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Stephen M. Black
- Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine, Miami, FL, United States
- Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Miami, FL, United States
- Center for Translational Science, Florida International University, Port St. Lucie, FL, United States
| | - Haiyang Tang
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China
- State Key Laboratory of Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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Feng A, Ma W, Faraj R, Kelly GT, Black SM, Fallon MB, Wang T. Identification of S1PR3 gene signature involved in survival of sepsis patients. BMC Med Genomics 2021; 14:43. [PMID: 33549110 PMCID: PMC7866676 DOI: 10.1186/s12920-021-00886-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 01/25/2021] [Indexed: 11/10/2022] Open
Abstract
Background Sepsis is a life-threatening complication of infection that rapidly triggers tissue damage in multiple organ systems and leads to multi-organ deterioration. Up to date, prognostic biomarkers still have limitations in predicting the survival of patients with sepsis. We need to discover more prognostic biomarkers to improve the sensitivity and specificity of the prognosis of sepsis patients. Sphingosine-1-phosphate (S1P) receptor 3 (S1PR3), as one of the S1P receptors, is a prospective prognostic biomarker regulating sepsis-relevant events, including compromised vascular integrity, antigen presentation, and cytokine secretion. Until now, no S1PR3-related prognostic gene signatures for sepsis patients have been found. Methods This study intends to obtain an S1PR3-associated gene signature from whole blood samples to be utilized as a probable prognostic tool for patients with sepsis. Results We obtained an 18-gene S1PR3-related molecular signature (S3MS) from the intersection of S1PR3-associated genes and survival-associated genes. Numerous important immunity pathways that regulate the progression of sepsis are enriched among our 18 genes. Significantly, S3MS functions greatly in both the discovery and validation cohort. Furthermore, we demonstrated that S3MS obtains significantly better classification performance than random 18-gene signatures. Conclusions Our results confirm the key role of S1PR3-associated genes in the development of sepsis, which will be a potential prognostic biomarker for patients with sepsis. Our results also focus on the classification performance of our S3MS as biomarkers for sepsis, which could also provide an early warning system for patients with sepsis.
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Affiliation(s)
- Anlin Feng
- Department of Internal Medicine, College of Medicine-Phoenix, University of Arizona, 475 N. 5th Street, Phoenix, AZ, 85004, USA
| | - Wenli Ma
- Department of Internal Medicine, College of Medicine-Phoenix, University of Arizona, 475 N. 5th Street, Phoenix, AZ, 85004, USA
| | - Reem Faraj
- Department of Internal Medicine, College of Medicine-Phoenix, University of Arizona, 475 N. 5th Street, Phoenix, AZ, 85004, USA
| | - Gabriel T Kelly
- Department of Internal Medicine, College of Medicine-Phoenix, University of Arizona, 475 N. 5th Street, Phoenix, AZ, 85004, USA
| | - Stephen M Black
- Department of Medicine, College of Medicine-Tucson, University of Arizona, Tucson, AZ, USA
| | - Michael B Fallon
- Department of Internal Medicine, College of Medicine-Phoenix, University of Arizona, 475 N. 5th Street, Phoenix, AZ, 85004, USA
| | - Ting Wang
- Department of Internal Medicine, College of Medicine-Phoenix, University of Arizona, 475 N. 5th Street, Phoenix, AZ, 85004, USA.
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Wang H, Sun X, Lu Q, Zemskov EA, Yegambaram M, Wu X, Wang T, Tang H, Black SM. The mitochondrial redistribution of eNOS is involved in lipopolysaccharide induced inflammasome activation during acute lung injury. Redox Biol 2021; 41:101878. [PMID: 33578126 PMCID: PMC7879038 DOI: 10.1016/j.redox.2021.101878] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 01/17/2021] [Accepted: 01/21/2021] [Indexed: 01/03/2023] Open
Abstract
Acute lung injury (ALI) is a devastating clinical syndrome with no effective therapies. Inflammasome activation has been reported to play a critical role in the initiation and progression of ALI. The molecular mechanisms involved in regulating the activation of inflammasome in ALI remains unresolved, although increases in mitochondrial derived reactive oxygen species (mito-ROS) are involved. Our previous work has shown that the mitochondrial redistribution of uncoupled eNOS impairs mitochondrial bioenergetics and increases mito-ROS generation. Thus, the focus of our study was to determine if lipopolysaccharide (LPS)-mediated inflammasome activation involves the mitochondrial redistribution of uncoupled eNOS. Our data show that the increase in mito-ROS involved in LPS-mediated inflammasome activation is associated with the disruption of mitochondrial bioenergetics in human lung microvascular endothelial cells (HLMVEC) and the mitochondrial redistribution of eNOS. These effects are dependent on RhoA-ROCK signaling and are mediated via increased phosphorylation of eNOS at Threonine (T)-495. A derivative of the mitochondrial targeted Szeto-Schiller peptide (SSP) attached to the antioxidant Tiron (T-SSP), significantly attenuated LPS-mediated mito-ROS generation and inflammasome activation in HLMVEC. Further, T-SSP attenuated mitochondrial superoxide production in a mouse model of sepsis induced ALI. This in turn significantly reduced the inflammatory response and attenuated lung injury. Thus, our findings show that the mitochondrial redistribution of uncoupled eNOS is intimately involved in the activation of the inflammatory response in ALI and implicate attenuating mito-ROS as a therapeutic strategy in humans.
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Affiliation(s)
- Hui Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China; Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA
| | - Xutong Sun
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA
| | - Qing Lu
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA
| | - Evgeny A Zemskov
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA
| | - Manivannan Yegambaram
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA
| | - Xiaomin Wu
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA
| | - Ting Wang
- Department of Internal Medicine, The University of Arizona Health Sciences, Phoenix, AZ, USA
| | - Haiyang Tang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China; Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA.
| | - Stephen M Black
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA.
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Abstract
According to the World Symposium Pulmonary Hypertension (WSPH) classification, pulmonary hypertension (PH) is classified into five categories based on etiology. Among them, Group 1 pulmonary arterial hypertension (PAH) disorders are rare but progressive and often, fatal despite multiple approved treatments. Elevated pulmonary arterial pressure in patients with WSPH Group 1 PAH is mainly caused by increased pulmonary vascular resistance (PVR), due primarily to sustained pulmonary vasoconstriction and excessive obliterative pulmonary vascular remodeling. Growing evidence indicates that inflammation plays a critical role in the development of pulmonary vascular remodeling associated with PAH. While the role of auto-immunity is unclear, infiltration of inflammatory cells in and around vascular lesions, including T- and B-cells, dendritic cells, macrophages, and mast cells have been observed in PAH patients. Serum and plasma levels of chemokines, cytokines, and autoantibodies are also increased in PAH patients; some of these circulating molecules are correlated with disease severity and survival. Preclinical experiments have reported a key role of the inflammation in PAH pathophysiology in vivo. Importantly, anti-inflammatory and immunosuppressive agents have further exhibited therapeutic effects. The present chapter reviews published experimental and clinical evidence highlighting the canonical role of inflammation in the pathogenesis of PAH and as a major target for the development of anti-inflammatory therapies in patients with PAH.
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Affiliation(s)
- Shuxin Liang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Ankit A Desai
- Department of Medicine, Indiana University, Indianapolis, IN, USA
| | - Stephen M Black
- Division of Translational and Regenerative Medicine, College of Medicine, University of Arizona, Tucson, AZ, USA
| | - Haiyang Tang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China. .,State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
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Lu Q, Zemskov EA, Sun X, Wang H, Yegambaram M, Wu X, Garcia-Flores A, Song S, Tang H, Kangath A, Cabanillas GZ, Yuan JXJ, Wang T, Fineman JR, Black SM. Activation of the mechanosensitive Ca 2+ channel TRPV4 induces endothelial barrier permeability via the disruption of mitochondrial bioenergetics. Redox Biol 2021; 38:101785. [PMID: 33221570 PMCID: PMC7691184 DOI: 10.1016/j.redox.2020.101785] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/29/2020] [Accepted: 11/01/2020] [Indexed: 12/20/2022] Open
Abstract
Mechanical ventilation is a life-saving intervention in critically ill patients with respiratory failure due to acute respiratory distress syndrome (ARDS), a refractory lung disease with an unacceptable high mortality rate. Paradoxically, mechanical ventilation also creates excessive mechanical stress that directly augments lung injury, a syndrome known as ventilator-induced lung injury (VILI). The specific mechanisms involved in VILI-induced pulmonary capillary leakage, a key pathologic feature of VILI are still far from resolved. The mechanoreceptor, transient receptor potential cation channel subfamily V member 4, TRPV4 plays a key role in the development of VILI through unresolved mechanism. Endothelial nitric oxide synthase (eNOS) uncoupling plays an important role in sepsis-mediated ARDS so in this study we investigated whether there is a role for eNOS uncoupling in the barrier disruption associated with TRPV4 activation during VILI. Our data indicate that the TRPV4 agonist, 4α-Phorbol 12,13-didecanoate (4αPDD) induces pulmonary arterial endothelial cell (EC) barrier disruption through the disruption of mitochondrial bioenergetics. Mechanistically, this occurs via the mitochondrial redistribution of uncoupled eNOS secondary to a PKC-dependent phosphorylation of eNOS at Threonine 495 (T495). A specific decoy peptide to prevent T495 phosphorylation reduced eNOS uncoupling and mitochondrial redistribution and preserved PAEC barrier function under 4αPDD challenge. Further, our eNOS decoy peptide was able to preserve lung vascular integrity in a mouse model of VILI. Thus, we have revealed a functional link between TRPV4 activation, PKC-dependent eNOS phosphorylation at T495, and EC barrier permeability. Reducing pT495-eNOS could be a new therapeutic approach for the prevention of VILI.
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Affiliation(s)
- Qing Lu
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA
| | - Evgeny A Zemskov
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA
| | - Xutong Sun
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA
| | - Hui Wang
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Manivannan Yegambaram
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA
| | - Xiaomin Wu
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA
| | - Alejandro Garcia-Flores
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA
| | - Shanshan Song
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA
| | - Haiyang Tang
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Archana Kangath
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA
| | - Gabriela Zubiate Cabanillas
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA; Department of Chemist-Biological Sciences, Universidad de Sonora, Hermosillo, SON, Mexico
| | - Jason X-J Yuan
- Department of Medicine, University of California, San Diego, CA, USA
| | - Ting Wang
- Department of Internal Medicine, The University of Arizona Health Sciences, Phoenix, AZ, USA
| | - Jeffrey R Fineman
- Department of Pediatrics, University of California San Francisco, San Francisco, CA, USA; Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA, USA
| | - Stephen M Black
- Department of Medicine, Division of Translational & Regenerative Medicine, University of Arizona, Tucson, AZ, USA.
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Acosta MF, Muralidharan P, Grijalva CL, Abrahamson MD, Hayes D, Fineman JR, Black SM, Mansour HM. Advanced therapeutic inhalation aerosols of a Nrf2 activator and RhoA/Rho kinase (ROCK) inhibitor for targeted pulmonary drug delivery in pulmonary hypertension: design, characterization, aerosolization, in vitro 2D/3D human lung cell cultures, and in vivo efficacy. Ther Adv Respir Dis 2021; 15:1753466621998245. [PMID: 33719747 PMCID: PMC7968029 DOI: 10.1177/1753466621998245] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 01/27/2021] [Indexed: 12/16/2022] Open
Abstract
Inhalable nanostructured microparticles of simvastatin, a Nrf2 activator and RhoA/Rho kinase (ROCK) inhibitor, were rationally designed for targeted pulmonary delivery as dry powder inhalers (DPIs) for the treatment of pulmonary hypertension (PH). Advanced particle engineering design technology was employed to develop inhalable dry powders using different dilute feed concentrations and spray drying pump rates. Several analytical techniques were used comprehensively to characterize the physicochemical properties of the resulting powders. Scanning electron microscopy (SEM) was used to visualize particle morphology (shape), surface structure, size, and size distribution. Karl Fischer titration (KFT) was employed to quantify the residual water content in the powders. X-ray powder diffraction (XRPD) was used to determine crystallinity. Hot-stage microscopy (HSM) under cross-polarizing lens was used to observe the presence or absence of birefringence characteristic of crystallinity. Differential scanning calorimetry (DSC) was employed to quantify thermotropic phase behavior. Attenuated total reflectance (ATR)-Fourier-transform infrared (FTIR) spectroscopy and Raman spectroscopy were used to determine the molecular fingerprint of simvastatin powders before and after particle engineering design. In vitro aerosol dispersion performance was performed with three different Food and Drug Administration (FDA)-approved human DPI devices. Cell viability and transepithelial electrical resistance (TEER) were demonstrated using different in vitro human pulmonary cell two and three-dimensional models at the air-liquid interface, and in vivo safety in healthy rats by inhalation. Efficacy was demonstrated in the in vivo lamb model of PH. Four different inhalable powders of simvastatin were successfully produced. They possessed nanostructured surfaces and were in the inhalable size range. Simvastatin retained its crystallinity following particle engineering design. The more dilute feed concentration spray dried at the lower pump rate produced the smallest particles. All powders successfully aerosolized with all three DPI human devices. Inhaled simvastatin as an aerosol restored the endothelial function in the shunt lamb model of PH, as demonstrated by the reduction of pulmonary vascular resistance (PVR) in response to the endothelium-dependent vasodilator acetylcholine.The reviews of this paper are available via the supplemental material section.
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Affiliation(s)
- Maria F. Acosta
- Skaggs Pharmaceutical Sciences Center, The University of Arizona College of Pharmacy, Tucson, AZ, USA
| | - Priya Muralidharan
- Skaggs Pharmaceutical Sciences Center, The University of Arizona College of Pharmacy, Tucson, AZ, USA
| | - Carissa L. Grijalva
- Skaggs Pharmaceutical Sciences Center, The University of Arizona College of Pharmacy, Tucson, AZ, USA
- Department of Biomedical Engineering, The University of Arizona College of Engineering, Tucson, AZ, USA
| | - Michael D. Abrahamson
- Skaggs Pharmaceutical Sciences Center, The University of Arizona College of Pharmacy, Tucson, AZ, USA
| | - Don Hayes
- Departments of Pediatrics and Internal Medicine, Lung and Heart-Lung Transplant Programs, The Ohio State University College of Medicine, Columbus, OH, USA
- The Davis Heart and Lung Research Institute, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Jeffrey R. Fineman
- Department of Pediatrics, University of California San Francisco School of Medicine, San Francisco, CA, USA
| | - Stephen M. Black
- Department of Medicine, Division of Translational and Regenerative Medicine, The University of Arizona College of Medicine, Tucson, AZ, USA
- Department of Medicine, Center for Lung Vascular Pathobiology, The University of Arizona College of Medicine, Tucson, AZ, USA
- Department of Physiology, The University of Arizona College of Medicine, Tucson, AZ, USA
| | - Heidi M. Mansour
- Skaggs Pharmaceutical Sciences Center, The University of Arizona College of Pharmacy, Tucson, AZ, USA
- Department of Medicine, Division of Translational and Regenerative Medicine, The University of Arizona College of Medicine, Tucson, AZ, USA
- The University of Arizona, BIO5 Institute, Tucson, AZ, USA
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Wu X, Sun X, Sharma S, Lu Q, Yegambaram M, Hou Y, Wang T, Fineman JR, Black SM. Arginine recycling in endothelial cells is regulated BY HSP90 and the ubiquitin proteasome system. Nitric Oxide 2020; 108:12-19. [PMID: 33338599 DOI: 10.1016/j.niox.2020.12.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 12/01/2020] [Accepted: 12/11/2020] [Indexed: 12/26/2022]
Abstract
Despite the saturating concentrations of intracellular l-arginine, nitric oxide (NO) production in endothelial cells (EC) can be stimulated by exogenous arginine. This phenomenon, termed the "arginine paradox" led to the discovery of an arginine recycling pathway in which l-citrulline is recycled to l-arginine by utilizing two important urea cycle enzymes argininosuccinate synthetase (ASS) and argininosuccinate lyase (ASL). Prior work has shown that ASL is present in a NO synthetic complex containing hsp90 and endothelial NO synthase (eNOS). However, it is unclear whether hsp90 forms functional complexes with ASS and ASL and if it is involved regulating their activity. Thus, elucidating the role of hsp90 in the arginine recycling pathway was the goal of this study. Our data indicate that both ASS and ASL are chaperoned by hsp90. Inhibiting hsp90 activity with geldanamycin (GA), decreased the activity of both ASS and ASL and decreased cellular l-arginine levels in bovine aortic endothelial cells (BAEC). hsp90 inhibition led to a time-dependent decrease in ASS and ASL protein, despite no changes in mRNA levels. We further linked this protein loss to a proteasome dependent degradation of ASS and ASL via the E3 ubiquitin ligase, C-terminus of Hsc70-interacting protein (CHIP) and the heat shock protein, hsp70. Transient over-expression of CHIP was sufficient to stimulate ASS and ASL degradation while the over-expression of CHIP mutant proteins identified both TPR- and U-box-domain as essential for ASS and ASL degradation. This study provides a novel insight into the molecular regulation l-arginine recycling in EC and implicates the proteasome pathway as a possible therapeutic target to stimulate NO signaling.
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Affiliation(s)
- Xiaomin Wu
- Department of Medicine, Arizona Health Sciences Center, University of Arizona, Tucson, AZ, 85721, USA
| | - Xutong Sun
- Department of Medicine, Arizona Health Sciences Center, University of Arizona, Tucson, AZ, 85721, USA
| | - Shruti Sharma
- Center for Biotechnology & Genomic Medicine, Medical College of Georgia at Augusta University, Augusta, GA, 30912, USA
| | - Qing Lu
- Department of Medicine, Arizona Health Sciences Center, University of Arizona, Tucson, AZ, 85721, USA
| | - Manivannan Yegambaram
- Department of Medicine, Arizona Health Sciences Center, University of Arizona, Tucson, AZ, 85721, USA
| | - Yali Hou
- Center for Biotechnology & Genomic Medicine, Medical College of Georgia at Augusta University, Augusta, GA, 30912, USA
| | - Ting Wang
- Department of Internal Medicine, University of Arizona, Phoenix, AZ, 85004, USA
| | - Jeffrey R Fineman
- The Department of Pediatrics, University of California San Francisco, San Francisco, CA, 94143, USA; The Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Stephen M Black
- Department of Medicine, Arizona Health Sciences Center, University of Arizona, Tucson, AZ, 85721, USA.
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Acosta MF, Abrahamson MD, Encinas-Basurto D, Fineman JR, Black SM, Mansour HM. Inhalable Nanoparticles/Microparticles of an AMPK and Nrf2 Activator for Targeted Pulmonary Drug Delivery as Dry Powder Inhalers. AAPS J 2020; 23:2. [PMID: 33200330 PMCID: PMC7669792 DOI: 10.1208/s12248-020-00531-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 10/31/2020] [Indexed: 12/19/2022] Open
Abstract
Metformin is an activator of the AMPK and Nrf2 pathways which are important in the pathology of several complex pulmonary diseases with unmet medical needs. Organic solution advanced spray drying in the absence of water in closed-mode was used to design and develop respirable dry powders. Following comprehensive characterization, the influence of physicochemical properties was correlated with performance as aerosols using inertial impaction and three different human dry powder inhaler (DPI) devices varying in device properties. In vitro cell assays were conducted to test safety in 2D human pulmonary cell lines and in 3D small airway epithelia comprising primary cells at the air-liquid interface (ALI). In addition, in vitro transepithelial electrical resistance (TEER) was carried out. Metformin remained crystalline following advanced spray drying under these conditions. All SD powders consisted of nanoparticles/microparticles in the solid state. In vitro aerosol dispersion performance showed high aerosolization for all SD metformin powders with all DPI devices tested. High emitted dose for all powders with all three DPI devices was measured. Differences in other aerosol performance parameters and the interplay between the properties of different formulations produced at specific pump rates and the three different DPI devices were correlated with spray drying pump rate and device properties. Safety over a wide metformin dose range was also demonstrated in vitro. Aerosol delivery of metformin nanoparticles/microparticles has the potential to be a new "first-in-class" therapeutic for the treatment of a number of pulmonary diseases including pulmonary vascular diseases such as pulmonary hypertension.
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Affiliation(s)
- Maria F Acosta
- Skaggs Pharmaceutical Sciences Center, The University of Arizona College of Pharmacy, 1703 E. Mabel St, Skaggs Pharmaceutical Sciences Center, Tucson, Arizona, 85721-0207, USA
| | - Michael D Abrahamson
- Skaggs Pharmaceutical Sciences Center, The University of Arizona College of Pharmacy, 1703 E. Mabel St, Skaggs Pharmaceutical Sciences Center, Tucson, Arizona, 85721-0207, USA
| | - David Encinas-Basurto
- Skaggs Pharmaceutical Sciences Center, The University of Arizona College of Pharmacy, 1703 E. Mabel St, Skaggs Pharmaceutical Sciences Center, Tucson, Arizona, 85721-0207, USA
| | - Jeffrey R Fineman
- Department of Pediatrics, University of California San Francisco School of Medicine, San Francisco, California, USA
- University of California San Francisco Benioff Children's Hospital, San Francisco, California, USA
- University of California San Francisco Cardiovascular Research Institute, San Francisco, California, USA
| | - Stephen M Black
- Department of Medicine, Division of Translational and Regenerative Medicine, The University of Arizona College of Medicine, Tucson, Arizona, USA
- Department of Medicine, Center for Lung Vascular Pathobiology, The University of Arizona College of Medicine, Tucson, Arizona, USA
- Department of Physiology, The University of Arizona College of Medicine, Tucson, Arizona, USA
| | - Heidi M Mansour
- Skaggs Pharmaceutical Sciences Center, The University of Arizona College of Pharmacy, 1703 E. Mabel St, Skaggs Pharmaceutical Sciences Center, Tucson, Arizona, 85721-0207, USA.
- Department of Medicine, Division of Translational and Regenerative Medicine, The University of Arizona College of Medicine, Tucson, Arizona, USA.
- BIO5 Institute, The University of Arizona, Tucson, Arizona, USA.
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Gomez AI, Acosta MF, Muralidharan P, Yuan JXJ, Black SM, Hayes D, Mansour HM. Advanced spray dried proliposomes of amphotericin B lung surfactant-mimic phospholipid microparticles/nanoparticles as dry powder inhalers for targeted pulmonary drug delivery. Pulm Pharmacol Ther 2020; 64:101975. [PMID: 33137515 DOI: 10.1016/j.pupt.2020.101975] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 10/07/2020] [Accepted: 10/26/2020] [Indexed: 12/21/2022]
Abstract
The purpose of this study was to design, develop and characterize inhalable proliposomal microparticles/nanoparticles of Amphotericin B (AmB) with synthetic phospholipids, dipalmitoylphosphatidylcholine (DPPC) and dipalmitoylphosphatidylglycerol (DPPG) which are lung surfactant-mimic phospholipids. Organic solutions of AmB and phospholipids, were co-spray dried using an advanced closed-mode system and a high performance cyclone. Scanning electron microscopy (SEM) was employed to visualize the surface structure, morphology, and particles size. The residual water content of the proliposomes was quantified by Karl Fisher coulometric titration (KFT). Degree of crystallinity/non-crystallinity was measured by X-ray powder diffraction (XRPD). Phase behavior was measured by differential scanning calorimetry. The chemical composition by molecular fingerprinting was established using attenuated total reflectance (ATR)-Fourier-transform infrared (FTIR) spectroscopy. The amount of AmB loaded into the proliposomes was quantified using UV-VIS spectroscopy. The in vitro aerosol dispersion performance was conducted using the Next Generation Impactor (NGI) and the human dry powder inhaler (DPI) (Handihaler®) that is FDA-approved. Different human lung cell lines were employed to demonstrate in vitro safety as a function of dose and formulation. Smooth, spherical microparticles/nanoparticles were formed at medium and high spray drying pump rates and had low residual water content. A characteristic peak in the XRPD diffraction pattern as well as an endotherm in DSC confirmed the presence of the lipid bilayer structure characteristic in the DPPC/DPPG proliposomal systems. Superior in vitro aerosol performance was achieved with engineered microparticles/nanoparticles demonstrating suitability for targeted pulmonary drug delivery as inhalable dry powders. The in vitro cellular studies demonstrated that the formulated proliposomes are safe. These AmB proliposomes can be a better option for targeted treatment of severe pulmonary fungal infections.
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Affiliation(s)
- Alexan I Gomez
- The University of Arizona College of Pharmacy, Dept of Pharmaceutical Sciences, Tucson, AZ, USA; The University of Arizona College of Engineering, Department of Biomedical Engineering, Tucson, AZ, USA; The University of Arizona College of Medicine, Department of Medicine, Division of Translational & Regenerative Medicine, Tucson, AZ, USA
| | - Maria F Acosta
- The University of Arizona College of Pharmacy, Dept of Pharmaceutical Sciences, Tucson, AZ, USA
| | - Priya Muralidharan
- The University of Arizona College of Pharmacy, Dept of Pharmaceutical Sciences, Tucson, AZ, USA
| | - Jason X-J Yuan
- The University of Arizona College of Medicine, Department of Medicine, Division of Translational & Regenerative Medicine, Tucson, AZ, USA
| | - Stephen M Black
- The University of Arizona College of Medicine, Department of Medicine, Division of Translational & Regenerative Medicine, Tucson, AZ, USA; The University of Arizona College of Medicine, Department of Medicine, Center for Lung Vascular Pathobiology, Tucson, AZ, USA; The University of Arizona College of Medicine, Department of Physiology, Tucson, AZ, USA
| | - Don Hayes
- The Ohio State University College of Medicine, Department of Pediatrics and Internal Medicine, Lung and Heart-Lung Transplant Programs, Columbus, AZ, USA; The Ohio State University College of Medicine, The Davis Heart and Lung Research Institute, Columbus, OH, USA
| | - Heidi M Mansour
- The University of Arizona College of Pharmacy, Dept of Pharmaceutical Sciences, Tucson, AZ, USA; The University of Arizona College of Medicine, Department of Medicine, Division of Translational & Regenerative Medicine, Tucson, AZ, USA; The University of Arizona, Institute of the Environment, Tucson, AZ, USA; The University of Arizona, BIO5 Research Institute, Tucson, AZ, USA; The University of Arizona, National Cancer Institute Comprehensive Cancer Center, Tucson, AZ, USA.
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Ornatowski W, Lu Q, Yegambaram M, Garcia AE, Zemskov EA, Maltepe E, Fineman JR, Wang T, Black SM. Complex interplay between autophagy and oxidative stress in the development of pulmonary disease. Redox Biol 2020; 36:101679. [PMID: 32818797 PMCID: PMC7451718 DOI: 10.1016/j.redox.2020.101679] [Citation(s) in RCA: 172] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/20/2020] [Accepted: 08/04/2020] [Indexed: 12/16/2022] Open
Abstract
The autophagic pathway involves the encapsulation of substrates in double-membraned vesicles, which are subsequently delivered to the lysosome for enzymatic degradation and recycling of metabolic precursors. Autophagy is a major cellular defense against oxidative stress, or related conditions that cause accumulation of damaged proteins or organelles. Selective forms of autophagy can maintain organelle populations or remove aggregated proteins. Dysregulation of redox homeostasis under pathological conditions results in excessive generation of reactive oxygen species (ROS), leading to oxidative stress and the associated oxidative damage of cellular components. Accumulating evidence indicates that autophagy is necessary to maintain redox homeostasis. ROS activates autophagy, which facilitates cellular adaptation and diminishes oxidative damage by degrading and recycling intracellular damaged macromolecules and dysfunctional organelles. The cellular responses triggered by oxidative stress include the altered regulation of signaling pathways that culminate in the regulation of autophagy. Current research suggests a central role for autophagy as a mammalian oxidative stress response and its interrelationship to other stress defense systems. Altered autophagy phenotypes have been observed in lung diseases such as chronic obstructive lung disease, acute lung injury, cystic fibrosis, idiopathic pulmonary fibrosis, and pulmonary arterial hypertension, and asthma. Understanding the mechanisms by which ROS regulate autophagy will provide novel therapeutic targets for lung diseases. This review highlights our current understanding on the interplay between ROS and autophagy in the development of pulmonary disease.
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Affiliation(s)
- Wojciech Ornatowski
- Department of Medicine, The University of Arizona Health Sciences, Tucson, AZ, USA
| | - Qing Lu
- Department of Medicine, The University of Arizona Health Sciences, Tucson, AZ, USA
| | | | - Alejandro E Garcia
- Department of Medicine, The University of Arizona Health Sciences, Tucson, AZ, USA
| | - Evgeny A Zemskov
- Department of Medicine, The University of Arizona Health Sciences, Tucson, AZ, USA
| | - Emin Maltepe
- Department of Pediatrics, The University of California, San Francisco, San Francisco, CA, USA
| | - Jeffrey R Fineman
- Department of Pediatrics, The University of California, San Francisco, San Francisco, CA, USA; Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA, USA
| | - Ting Wang
- Department of Internal Medicine, The University of Arizona Health Sciences, Phoenix, AZ, USA
| | - Stephen M Black
- Department of Medicine, The University of Arizona Health Sciences, Tucson, AZ, USA.
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Sun X, Lu Q, Yegambaram M, Kumar S, Qu N, Srivastava A, Wang T, Fineman JR, Black SM. TGF-β1 attenuates mitochondrial bioenergetics in pulmonary arterial endothelial cells via the disruption of carnitine homeostasis. Redox Biol 2020; 36:101593. [PMID: 32554303 PMCID: PMC7303661 DOI: 10.1016/j.redox.2020.101593] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/19/2020] [Accepted: 05/21/2020] [Indexed: 12/23/2022] Open
Abstract
Transforming growth factor beta-1 (TGF-β1) signaling is increased and mitochondrial function is decreased in multiple models of pulmonary hypertension (PH) including lambs with increased pulmonary blood flow (PBF) and pressure (Shunt). However, the potential link between TGF-β1 and the loss of mitochondrial function has not been investigated and was the focus of our investigations. Our data indicate that exposure of pulmonary arterial endothelial cells (PAEC) to TGF-β1 disrupted mitochondrial function as determined by enhanced mitochondrial ROS generation, decreased mitochondrial membrane potential, and disrupted mitochondrial bioenergetics. These events resulted in a decrease in cellular ATP levels, decreased hsp90/eNOS interactions and attenuated shear-mediated NO release. TGF-β1 induced mitochondrial dysfunction was linked to a nitration-mediated activation of Akt1 and the subsequent mitochondrial translocation of endothelial NO synthase (eNOS) resulting in the nitration of carnitine acetyl transferase (CrAT) and the disruption of carnitine homeostasis. The increase in Akt1 nitration correlated with increased NADPH oxidase activity associated with increased levels of p47phox, p67phox, and Rac1. The increase in NADPH oxidase was associated with a decrease in peroxisome proliferator-activated receptor type gamma (PPARγ) and the PPARγ antagonist, GW9662, was able to mimic the disruptive effect of TGF-β1 on mitochondrial bioenergetics. Together, our studies reveal for the first time, that TGF-β1 can disrupt mitochondrial function through the disruption of cellular carnitine homeostasis and suggest that stimulating carinitine homeostasis may be an avenue to treat pulmonary vascular disease.
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Affiliation(s)
- Xutong Sun
- Department of Medicine, Arizona Health Sciences Center, University of Arizona, Tucson, AZ, 85721, USA
| | - Qing Lu
- Department of Medicine, Arizona Health Sciences Center, University of Arizona, Tucson, AZ, 85721, USA
| | - Manivannan Yegambaram
- Department of Medicine, Arizona Health Sciences Center, University of Arizona, Tucson, AZ, 85721, USA
| | - Sanjiv Kumar
- Center for Blood Disorders, Medical College of Georgia at Augusta University, Augusta, GA, 30912, USA
| | - Ning Qu
- Department of Medicine, Arizona Health Sciences Center, University of Arizona, Tucson, AZ, 85721, USA
| | - Anup Srivastava
- Department of Medicine, Arizona Health Sciences Center, University of Arizona, Tucson, AZ, 85721, USA
| | - Ting Wang
- Department of Internal Medicine University of Arizona, Phoenix, AZ, 85004, The Department of Pediatrics and the Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Jeffrey R Fineman
- Department of Internal Medicine University of Arizona, Phoenix, AZ, 85004, The Department of Pediatrics and the Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Stephen M Black
- Department of Medicine, Arizona Health Sciences Center, University of Arizona, Tucson, AZ, 85721, USA.
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43
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Affiliation(s)
- S M Black
- Medical Sciences Division, University of Oxford, Oxford, UK
| | - F R Ali
- Vernova Healthcare Community Interest Company, Macclesfield, UK
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44
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Zhu T, Chiacchia S, Kameny RJ, Garcia De Herreros A, Gong W, Raff GW, Boehme JB, Maltepe E, Lasheras JC, Black SM, Datar SA, Fineman JR. Mechanical forces alter endothelin-1 signaling: comparative ovine models of congenital heart disease. Pulm Circ 2020; 10:2045894020922118. [PMID: 32489641 PMCID: PMC7238833 DOI: 10.1177/2045894020922118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 04/01/2020] [Indexed: 11/27/2022] Open
Abstract
The risk and progression of pulmonary vascular disease in patients with congenital heart disease is dependent on the hemodynamics associated with different lesions. However, the underlying mechanisms are not understood. Endothelin-1 is a potent vasoconstrictor that plays a key role in the pathology of pulmonary vascular disease. We utilized two ovine models of congenital heart disease: (1) fetal aortopulmonary graft placement (shunt), resulting in increased flow and pressure; and (2) fetal ligation of the left pulmonary artery resulting in increased flow and normal pressure to the right lung, to investigate the hypothesis that high pressure and flow, but not flow alone, upregulates endothelin-1 signaling. Lung tissue and pulmonary arterial endothelial cells were harvested from control, shunt, and the right lung of left pulmonary artery lambs at 3–7 weeks of age. We found that lung preproendothelin-1 mRNA and protein expression were increased in shunt lambs compared to controls. Preproendothelin-1 mRNA expression was modestly increased, and protein was unchanged in left pulmonary artery lambs. These changes resulted in increased lung endothelin-1 levels in shunt lambs, while left pulmonary artery levels were similar to controls. Pulmonary arterial endothelial cells exposed to increased shear stress decreased endothelin-1 levels by five-fold, while cyclic stretch increased levels by 1.5-fold. These data suggest that pressure or an additive effect of pressure and flow, rather than increased flow alone, is the principal driver of increased endothelin signaling in congenital heart disease. Defining the molecular drivers of the pathobiology of pulmonary vascular disease due to differing mechanical forces will allow for a more targeted therapeutic approach.
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Affiliation(s)
- Terry Zhu
- Department of Pediatrics, University of California, San Francisco, CA, USA
| | - Samuel Chiacchia
- Department of Pediatrics, University of California, San Francisco, CA, USA
| | - Rebecca J Kameny
- Department of Pediatrics, University of California, San Francisco, CA, USA
| | | | - Wenhui Gong
- Department of Pediatrics, University of California, San Francisco, CA, USA
| | - Gary W Raff
- Department of Surgery, University of California, Davis, CA, USA
| | - Jason B Boehme
- Department of Pediatrics, University of California, San Francisco, CA, USA
| | - Emin Maltepe
- Department of Pediatrics, University of California, San Francisco, CA, USA
| | - Juan C Lasheras
- Institute of Engineering in Medicine, University of California, San Diego, CA, USA
| | - Stephen M Black
- Department of Medicine, University of Arizona, Tucson, AZ, USA
| | - Sanjeev A Datar
- Department of Pediatrics, University of California, San Francisco, CA, USA
| | - Jeffrey R Fineman
- Department of Pediatrics, University of California, San Francisco, CA, USA.,Cardiovascular Research Institute, University of California, San Francisco, CA, USA These authors contributed equally
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45
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Chen Y, Lu W, Yang K, Duan X, Li M, Chen X, Zhang J, Kuang M, Liu S, Wu X, Zou G, Liu C, Hong C, He W, Liao J, Hou C, Zhang Z, Zheng Q, Chen J, Zhang N, Tang H, Vanderpool RR, Desai AA, Rischard F, Black SM, Garcia JGN, Makino A, Yuan JXJ, Zhong N, Wang J. Tetramethylpyrazine: A promising drug for the treatment of pulmonary hypertension. Br J Pharmacol 2020; 177:2743-2764. [PMID: 31976548 DOI: 10.1111/bph.15000] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/28/2019] [Accepted: 01/07/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND AND PURPOSE Tetramethylpyrazine (TMP) was originally isolated from the traditional Chinese herb ligusticum and the fermented Japanese food natto and has since been synthesized. TMP has a long history of beneficial effects in the treatment of many cardiovascular diseases. Here we have evaluated the therapeutic effects of TMP on pulmonary hypertension (PH) in animal models and in patients with pulmonary arterial hypertension (PAH) or chronic thromboembolic pulmonary hypertension (CTEPH). EXPERIMENTAL APPROACH Three well-defined models of PH -chronic hypoxia (10% O2 )-induced PH (HPH), monocrotaline-induced PH (MCT-PH) and Sugen 5416/hypoxia-induced PH (SuHx-PH) - were used in Sprague-Dawley rats, and assessed by echocardiography, along with haemodynamic and histological techniques. Primary cultures of rat distal pulmonary arterial smooth muscle cells (PASMCs) were used to study intracellular calcium levels. Western blots and RT-qPCR assays were also used. In the clinical cohort, patients with PAH or CTEPH were recruited. The effects of TMP were evaluated in all systems. KEY RESULTS TMP (100 mg·kg-1 ·day-1 ) prevented rats from developing experimental PH and ameliorated three models of established PH: HPH, MCT-PH and SuHx-PH. The therapeutic effects of TMP were accompanied by inhibition of intracellular calcium homeostasis in PASMCs. In a small cohort of patients with PAH or CTEPH, oral administration of TMP (100 mg, t.i.d. for 16 weeks) increased the 6-min walk distance and improved the 1-min heart rate recovery. CONCLUSION AND IMPLICATIONS Our results suggest that TMP is a novel and inexpensive medication for treatment of PH. Clinical trial is registered with www.chictr.org.cn (ChiCTR-IPR-14005379).
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Affiliation(s)
- Yuqin Chen
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Wenju Lu
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Kai Yang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xin Duan
- State Key Laboratory of Cardiovascular Disease, Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Mengxi Li
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiuqing Chen
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jie Zhang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Meidan Kuang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Shiyun Liu
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiongting Wu
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Guofa Zou
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Chunli Liu
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Cheng Hong
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Wenjun He
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jing Liao
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Chi Hou
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou, China
| | - Zhe Zhang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Qiuyu Zheng
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jiyuan Chen
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Nuofu Zhang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Haiyang Tang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Departments of Medicine and Physiology, The University of Arizona, Tucson, Arizona
| | - Rebecca R Vanderpool
- Departments of Medicine and Physiology, The University of Arizona, Tucson, Arizona
| | - Ankit A Desai
- Departments of Medicine and Physiology, The University of Arizona, Tucson, Arizona
| | - Franz Rischard
- Departments of Medicine and Physiology, The University of Arizona, Tucson, Arizona
| | - Stephen M Black
- Departments of Medicine and Physiology, The University of Arizona, Tucson, Arizona
| | - Joe G N Garcia
- Departments of Medicine and Physiology, The University of Arizona, Tucson, Arizona
| | - Ayako Makino
- Department of Medicine, University of California, San Diego, La Jolla, California, USA
| | - Jason X-J Yuan
- Department of Medicine, University of California, San Diego, La Jolla, California, USA
| | - Nanshan Zhong
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jian Wang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangdong Key Laboratory of Vascular Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Division of Pulmonary and Critical Care Medicine, The People's Hospital of Inner Mongolia, Huhhot, China.,Department of Medicine, University of California, San Diego, La Jolla, California, USA
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46
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Chignalia AZ, Isbatan A, Black SM, Dull RO. Glypican‐1 Is a Trigger for Pulmonary Edema Development During Acute Heart Failure. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.02749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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47
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Garcia-Herreros A, Kameny RJ, Zhu T, Boehme J, Raff G, Lasheras JC, Black SM, Maltepe E, Datar SA, Fineman JR. Mechanical Forces Alter Endothelin-1 Signaling: Comparative Ovine Models of Congenital Heart Disease. Biophys J 2020. [DOI: 10.1016/j.bpj.2019.11.1471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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48
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Johnson Kameny R, Datar SA, Boehme JB, Morris C, Zhu T, Goudy BD, Johnson EG, Galambos C, Raff GW, Sun X, Wang T, Chiacchia SR, Lu Q, Black SM, Maltepe E, Fineman JR. Ovine Models of Congenital Heart Disease and the Consequences of Hemodynamic Alterations for Pulmonary Artery Remodeling. Am J Respir Cell Mol Biol 2019; 60:503-514. [PMID: 30620615 DOI: 10.1165/rcmb.2018-0305ma] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The natural history of pulmonary vascular disease associated with congenital heart disease (CHD) depends on associated hemodynamics. Patients exposed to increased pulmonary blood flow (PBF) and pulmonary arterial pressure (PAP) develop pulmonary vascular disease more commonly than patients exposed to increased PBF alone. To investigate the effects of these differing mechanical forces on physiologic and molecular responses, we developed two models of CHD using fetal surgical techniques: 1) left pulmonary artery (LPA) ligation primarily resulting in increased PBF and 2) aortopulmonary shunt placement resulting in increased PBF and PAP. Hemodynamic, histologic, and molecular studies were performed on control, LPA, and shunt lambs as well as pulmonary artery endothelial cells (PAECs) derived from each. Physiologically, LPA, and to a greater extent shunt, lambs demonstrated an exaggerated increase in PAP in response to vasoconstricting stimuli compared with controls. These physiologic findings correlated with a pathologic increase in medial thickening in pulmonary arteries in shunt lambs but not in control or LPA lambs. Furthermore, in the setting of acutely increased afterload, the right ventricle of control and LPA but not shunt lambs demonstrates ventricular-vascular uncoupling and adverse ventricular-ventricular interactions. RNA sequencing revealed excellent separation between groups via both principal components analysis and unsupervised hierarchical clustering. In addition, we found hyperproliferation of PAECs from LPA lambs, and to a greater extent shunt lambs, with associated increased angiogenesis and decreased apoptosis in PAECs derived from shunt lambs. A further understanding of mechanical force-specific drivers of pulmonary artery pathology will enable development of precision therapeutics for pulmonary hypertension associated with CHD.
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Affiliation(s)
| | | | | | | | | | | | - Eric G Johnson
- 2 Department of Veterinary Surgical and Radiological Sciences, School of Veterinary Medicine, and
| | - Csaba Galambos
- 3 Departments of Pathology and Laboratory Medicine, University of Colorado School of Medicine, Children's Hospital Colorado, Aurora, Colorado; and
| | - Gary W Raff
- 4 Department of Surgery, University of California, Davis, Davis, California
| | - Xutong Sun
- 5 Department of Medicine, University of Arizona College of Medicine, Tucson, Arizona
| | - Ting Wang
- 5 Department of Medicine, University of Arizona College of Medicine, Tucson, Arizona
| | | | - Qing Lu
- 5 Department of Medicine, University of Arizona College of Medicine, Tucson, Arizona
| | - Stephen M Black
- 5 Department of Medicine, University of Arizona College of Medicine, Tucson, Arizona
| | | | - Jeffrey R Fineman
- 1 Department of Pediatrics and.,6 Cardiovascular Research Institute, University of California, San Francisco, San Francisco, California
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49
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Sun H, Zhang F, Xu Y, Sun S, Wang H, Du Q, Gu C, Black SM, Han Y, Tang H. Salusin-β Promotes Vascular Calcification via Nicotinamide Adenine Dinucleotide Phosphate/Reactive Oxygen Species-Mediated Klotho Downregulation. Antioxid Redox Signal 2019; 31:1352-1370. [PMID: 31578871 PMCID: PMC6998059 DOI: 10.1089/ars.2019.7723] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Aims: Vascular calcification (VC) is a hallmark feature of cardiovascular disease and a significant risk factor for morbidity and mortality. Salusin-β exerts cardiovascular regulating effects in hypertension, atherosclerosis, and diabetes. The present study was designed to examine the roles of salusin-β in the progression of VC and its downstream signaling mechanisms. Results: Salusin-β expression in both the aortas of VC rats induced by vitamin D3 and nicotine and vascular smooth muscle cells (VSMCs) incubated with calcifying media was increased. Salusin-β knockdown remarkably reduced VC, whereas overexpression of salusin-β exacerbated VC both in vitro and in vivo. Overexpression of salusin-β promoted the VSMC osteochondrogenic transition, decreased Klotho protein levels, enhanced Ras-related C3 botulinum toxin substrate 1 (Rac1) activity and the translocation of p47phox to the membrane, increased the expression of nicotinamide adenine dinucleotide phosphate [NAD(P)H] oxidase subunits and the production of reactive oxygen species (ROS) with or without calcifying media; however, salusin-β deficiency played the opposite roles. The calcification and downregulated Klotho protein levels induced by salusin-β were restored by ROS scavenger N-acetyl-l-cysteine, diphenyleneiodonium chloride [an inhibitor of flavin-containing enzyme, including NAD(P)H oxidase], or gene knockdown of NAD(P)H oxidase (NOX)-2, p22phox, or p47phox but were not affected by NOX-1 and NOX-4 knockdown. Klotho knockdown attenuated the protective effect of salusin-β deficiency on VSMC calcification. By contrast, exogenous Klotho ameliorated the development of VC and ROS generation induced by salusin-β overexpression. Innovation: Salusin-β is a critical modulator in VC. Conclusion: Salusin-β regulates VC through activation of NAD(P)H/ROS-mediated Klotho downregulation, suggesting that salusin-β may be a novel target for treatment of VC.
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Affiliation(s)
- Haijian Sun
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center of Translational Medicine for Cardiovascular Disease, Department of Physiology, Nanjing Medical University, Nanjing, China.,Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, China
| | - Feng Zhang
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center of Translational Medicine for Cardiovascular Disease, Department of Physiology, Nanjing Medical University, Nanjing, China
| | - Yu Xu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center of Translational Medicine for Cardiovascular Disease, Department of Physiology, Nanjing Medical University, Nanjing, China
| | - Shuo Sun
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center of Translational Medicine for Cardiovascular Disease, Department of Physiology, Nanjing Medical University, Nanjing, China
| | - Huiping Wang
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, China
| | - Qiong Du
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, China
| | - Chenxin Gu
- College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Stephen M Black
- Division of Translational and Regenerative Medicine, College of Medicine, Department of Medicine, University of Arizona, Tucson, Arizona
| | - Ying Han
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center of Translational Medicine for Cardiovascular Disease, Department of Physiology, Nanjing Medical University, Nanjing, China
| | - Haiyang Tang
- College of Veterinary Medicine, Northwest A&F University, Yangling, China.,State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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50
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Abstract
Oxidative stress is well recognized to contribute to the pathogenesis of diverse diseases, including the devastating disease of the lung's blood vessels, pulmonary arterial hypertension (PAH), however, antioxidant-based therapies have been overall disappointing. With the evolution of the field of redox biology, it is now becoming clear that redox reactions are highly selective and targeted, allowing for precise control of redox-regulated signaling in health and disease. This special Forum of the journal describes the current state of knowledge on the regulation of redox-regulated signaling during the development of pulmonary vascular disease, focusing on distinct compartmentalized mechanisms outside and within the cell, including regulation of extracellular and intracellular membrane receptors and channels; responses to changes in biomechanical forces; intracellular thiol redox control; regulation of the nuclear transcription factor, peroxisome proliferator-activated receptor-γ; and regulation of mitochondrial metabolism. Collectively, they exemplify the complex, precise, and localized signaling pathways that drive PAH pathogenesis. This group of authors suggests ways that our increased understanding of these events may pave the way to improved therapeutic approaches for the treatment of this lethal disease.
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Affiliation(s)
- Stephen M Black
- Department of Medicine, The University of Arizona Health Sciences, Tucson, Arizona
| | - Eva Nozik-Grayck
- Department of Pediatrics, Cardiovascular Pulmonary Research Labs and Pediatric Critical Care Medicine, University of Colorado Denver, Aurora, Colorado
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