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Buchanan BC, Tang Y, Lopez H, Casanova NG, Garcia JGN, Yoon JY. Development of a cloud-based flow rate tool for eNAMPT biomarker detection. PNAS Nexus 2024; 3:pgae173. [PMID: 38711808 PMCID: PMC11071447 DOI: 10.1093/pnasnexus/pgae173] [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] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 04/16/2024] [Indexed: 05/08/2024]
Abstract
Increased levels of extracellular nicotinamide phosphoribosyltransferase (eNAMPT) are increasingly recognized as a highly useful biomarker of inflammatory disease and disease severity. In preclinical animal studies, a monoclonal antibody that neutralizes eNAMPT has been generated to successfully reduce the extent of inflammatory cascade activation. Thus, the rapid detection of eNAMPT concentration in plasma samples at the point of care (POC) would be of great utility in assessing the benefit of administering an anti-eNAMPT therapeutic. To determine the feasibility of this POC test, we conducted a particle immunoagglutination assay on a paper microfluidic platform and quantified its extent with a flow rate measurement in less than 1 min. A smartphone and cloud-based Google Colab were used to analyze the flow rates automatically. A horizontal flow model and an immunoagglutination binding model were evaluated to optimize the detection time, sample dilution, and particle concentration. This assay successfully detected eNAMPT in both human whole blood and plasma samples (diluted to 10 and 1%), with the limit of detection of 1-20 pg/mL (equivalent to 0.1-0.2 ng/mL in undiluted blood and plasma) and a linear range of 5-40 pg/mL. Furthermore, the smartphone POC assay distinguished clinical samples with low, mid, and high eNAMPT concentrations. Together, these results indicate this POC assay, which utilizes low-cost materials, time-effective methods, and a straightforward immunoassay (without surface immobilization), may reliably allow rapid determination of eNAMPT blood/plasma levels to advantage patient stratification in clinical trials and guide ALT-100 mAb therapeutic decision-making.
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Affiliation(s)
- Bailey C Buchanan
- Department of Biomedical Engineering, The University of Arizona, 1127 E. James E. Rogers Way, Tucson, AZ 85721, USA
| | - Yisha Tang
- Department of Biomedical Engineering, The University of Arizona, 1127 E. James E. Rogers Way, Tucson, AZ 85721, USA
| | - Hannah Lopez
- Department of Neuroscience, The University of Arizona, 1040 E. 4th Street, Tucson, AZ 85721, USA
| | - Nancy G Casanova
- Center for Inflammation Science and Systems Medicine, The Herbert Wertheim UF Scripps Research Institute for Biomedical Innovation and Technology, University of Florida, 120 Scripps Way, Jupiter, FL 33458, USA
| | - Joe G N Garcia
- Center for Inflammation Science and Systems Medicine, The Herbert Wertheim UF Scripps Research Institute for Biomedical Innovation and Technology, University of Florida, 120 Scripps Way, Jupiter, FL 33458, USA
| | - Jeong-Yeol Yoon
- Department of Biomedical Engineering, The University of Arizona, 1127 E. James E. Rogers Way, Tucson, AZ 85721, USA
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Price DR, Garcia JGN. A Razor's Edge: Vascular Responses to Acute Inflammatory Lung Injury/Acute Respiratory Distress Syndrome. Annu Rev Physiol 2024; 86:505-529. [PMID: 38345908 DOI: 10.1146/annurev-physiol-042222-030731] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2024]
Abstract
Historically considered a metabolically inert cellular layer separating the blood from the underlying tissue, the endothelium is now recognized as a highly dynamic, metabolically active tissue that is critical to organ homeostasis. Under homeostatic conditions, lung endothelial cells (ECs) in healthy subjects are quiescent, promoting vasodilation, platelet disaggregation, and anti-inflammatory mechanisms. In contrast, lung ECs are essential contributors to the pathobiology of acute respiratory distress syndrome (ARDS), as the quiescent endothelium is rapidly and radically altered upon exposure to environmental stressors, infectious pathogens, or endogenous danger signals into an effective and formidable regulator of innate and adaptive immunity. These dramatic perturbations, produced in a tsunami of inflammatory cascade activation, result in paracellular gap formation between lung ECs, sustained lung edema, and multi-organ dysfunction that drives ARDS mortality. The astonishing plasticity of the lung endothelium in negotiating this inflammatory environment and efforts to therapeutically target the aberrant ARDS endothelium are examined in further detail in this review.
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Affiliation(s)
- David R Price
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, New York-Presbyterian Hospital/Weill Cornell Medical Center, New York, NY, USA
| | - Joe G N Garcia
- Center for Inflammation Sciences and Systems Medicine, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, Jupiter, Florida, USA;
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3
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Liu Z, Sammani S, Barber CJ, Kempf CL, Li F, Yang Z, Bermudez RT, Camp SM, Herndon VR, Furenlid LR, Martin DR, Garcia JGN. An eNAMPT-neutralizing mAb reduces post-infarct myocardial fibrosis and left ventricular dysfunction. Biomed Pharmacother 2024; 170:116103. [PMID: 38160623 PMCID: PMC10872269 DOI: 10.1016/j.biopha.2023.116103] [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: 08/03/2023] [Revised: 12/21/2023] [Accepted: 12/26/2023] [Indexed: 01/03/2024] Open
Abstract
Myocardial infarction (MI) triggers adverse ventricular remodeling (VR), cardiac fibrosis, and subsequent heart failure. Extracellular nicotinamide phosphoribosyltransferase (eNAMPT) is postulated to play a significant role in VR processing via activation of the TLR4 inflammatory pathway. We hypothesized that an eNAMPT specific monoclonal antibody (mAb) could target and neutralize overexpressed eNAMPT post-MI and attenuate chronic cardiac inflammation and fibrosis. We investigated humanized ALT-100 and ALT-300 mAb with high eNAMPT-neutralizing capacity in an infarct rat model to test our hypothesis. ALT-300 was 99mTc-labeled to generate 99mTc-ALT-300 for imaging myocardial eNAMPT expression at 2 hours, 1 week, and 4 weeks post-IRI. The eNAMPT-neutralizing ALT-100 mAb (0.4 mg/kg) or saline was administered intraperitoneally at 1 hour and 24 hours post-reperfusion and twice a week for 4 weeks. Cardiac function changes were determined by echocardiography at 3 days and 4 weeks post-IRI. 99mTc-ALT-300 uptake was initially localized to the ischemic area at risk (IAR) of the left ventricle (LV) and subsequently extended to adjacent non-ischemic areas 2 hours to 4 weeks post-IRI. Radioactive uptake (%ID/g) of 99mTc-ALT-300 in the IAR increased from 1 week to 4 weeks (0.54 ± 0.16 vs. 0.78 ± 0.13, P < 0.01). Rats receiving ALT-100 mAb exhibited significantly improved myocardial histopathology and cardiac function at 4 weeks, with a significant reduction in the collagen volume fraction (%LV) compared to controls (21.5 ± 6.1% vs. 29.5 ± 9.9%, P < 0.05). Neutralization of the eNAMPT/TLR4 inflammatory cascade is a promising therapeutic strategy for MI by reducing chronic inflammation, fibrosis, and preserving cardiac function.
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Affiliation(s)
- Zhonglin Liu
- Translational Imaging Center, Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, United States; Department of Medical Imaging, University of Arizona Health Sciences, Tucson, AZ, United States.
| | - Saad Sammani
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Christy J Barber
- Department of Medical Imaging, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Carrie L Kempf
- University of Florida UF Scripps Research Institute, Jupiter, FL, United States
| | - Feng Li
- Translational Imaging Center, Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, United States
| | - Zhen Yang
- Translational Imaging Center, Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, United States
| | - Rosendo T Bermudez
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Sara M Camp
- University of Florida UF Scripps Research Institute, Jupiter, FL, United States
| | - Vivian Reyes Herndon
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Lars R Furenlid
- Department of Medical Imaging, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Diego R Martin
- Translational Imaging Center, Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, United States.
| | - Joe G N Garcia
- University of Florida UF Scripps Research Institute, Jupiter, FL, United States
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Ahmed M, Casanova NG, Zaghloul N, Gupta A, Rodriguez M, Robbins IR, Kempf CL, Sun X, Song JH, Hernon VR, Sammani S, Camp SM, Moreira A, Hsu CD, Garcia JGN. The eNAMPT/TLR4 inflammatory cascade drives the severity of intra-amniotic inflammation in pregnancy and predicts infant outcomes. Front Physiol 2023; 14:1129413. [PMID: 37415908 PMCID: PMC10319582 DOI: 10.3389/fphys.2023.1129413] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 06/01/2023] [Indexed: 07/08/2023] Open
Abstract
Introduction: Intra-amniotic inflammation (IAI) or chorioamnionitis is a common complication of pregnancy producing significant maternal morbidity/mortality, premature birth and neonatal risk of chronic lung diseases such as bronchopulmonary dysplasia (BPD). We examined eNAMPT (extracellular nicotinamide phosphoribosyltransferase), a critical inflammatory DAMP and TLR4 ligand, as a potential therapeutic target to reduce IAI severity and improve adverse fetal/neonatal outcomes. Methods: Blood/tissue samples were examined in: 1) women with histologically-proven chorioamnionitis, 2) very low birth weight (VLBW) neonates, and 3) a preclinical murine pregnancy model of IAI. Groups of pregnant IAI-exposed mice and pups were treated with an eNAMPT-neutralizing mAb. Results: Human placentas from women with histologically-proven chorioamnionitis exhibited dramatic NAMPT expression compared to placentas without chorioamnionitis. Increased NAMPT expression in whole blood from VLBW neonates (day 5) significantly predicted BPD development. Compared to untreated LPS-challenged murine dams (gestational day 15), pups born to eNAMPT mAb-treated dams (gestational days 15/16) exhibited a > 3-fold improved survival, reduced neonate lung eNAMPT/cytokine levels, and reduced development and severity of BPD and pulmonary hypertension (PH) following postnatal exposure to 100% hyperoxia days 1-14. Genome-wide gene expression studies of maternal uterine and neonatal cardiac tissues corroborated eNAMPT mAb-induced reductions in inflammatory pathway genes. Discussion: The eNAMPT/TLR4 inflammatory pathway is a highly druggable contributor to IAI pathobiology during pregnancy with the eNAMPT-neutralizing mAb a novel therapeutic strategy to decrease premature delivery and improve short- and long-term neonatal outcomes. eNAMPT blood expression is a potential biomarker for early prediction of chronic lung disease among premature neonates.
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Affiliation(s)
- Mohamed Ahmed
- Departments of Pediatrics, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Nancy G. Casanova
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Nahla Zaghloul
- Departments of Pediatrics, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Akash Gupta
- Departments of Pediatrics, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Marisela Rodriguez
- Departments of Pediatrics, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Ian R. Robbins
- Departments of Pediatrics, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Carrie L. Kempf
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Xiaoguang Sun
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Jin H. Song
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Vivian Reyes Hernon
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Saad Sammani
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Sara M. Camp
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Alvaro Moreira
- Department of Pediatrics, UT Health San Antonio, Long School of Medicine, San Antonio, TX, United States
| | - Chaur-Dong Hsu
- Department of Obstetrics and Gynecology, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Joe G. N. Garcia
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
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Zhang Q, Yin J, Zou Y. MiR-568 mitigated cardiomyocytes apoptosis, oxidative stress response and cardiac dysfunction via targeting SMURF2 in heart failure rats. Heart Vessels 2023; 38:857-868. [PMID: 36717388 DOI: 10.1007/s00380-022-02231-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 10/20/2022] [Accepted: 12/28/2022] [Indexed: 02/01/2023]
Abstract
Chronic heart failure (CHF), a conventional, complex, and severe syndrome, is generally defined by myocardial output inadequate to satisfy the metabolic requirements of body tissues. Recently, miR-568 was identified to be down-regulated in CHF patients' sera and negatively correlated with left ventricular mass index in symptomatic CHF patients with systolic dysfunction. Nevertheless, the role of miR-568 during CHF development remains obscure. The current study is aimed to investigate the role of miR-568 in CHF. The MTT assay, flow cytometry analysis, RT-qPCR analysis, western blot analysis and luciferase reporter assays were conducted to figure out the function and potential mechanism of miR-568 in vitro. Rats were operated with aortic coarctation to establish CHF animal model. The effects of miR-568 and SMURF2 on CHF rats were evaluated by hematoxylin-eosin staining, Masson's staining, serum index testing, cardiac ultrasound detection, and TUNEL staining assays. We discovered that miR-568 level was downregulated by H2O2 treatment in cardiomyocytes. In mechanism, miR-568 directly targeted and negatively regulated SMURF2. In function, SMURF2 overexpression reversed the effects of miR-568 on cardiac function and histological changes in vivo. Additionally, SMURF2 overexpression reversed the effects of miR-568 on the content of LDH, AST, CK and CK-MB in vivo. Moreover, SMURF2 overexpression reversed the effects of miR-568 on oxidative stress response in vivo. MiR-568 mitigated cardiomyocytes apoptosis, oxidative stress response and cardiac dysfunction via targeting SMURF2 in CHF rats. This discovery may serve as a potential biomarker for CHF treatment.
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Affiliation(s)
- Qian Zhang
- Department of Cardiology, The Sixth Hospital of Wuhan, Affiliated Hospital of Jianghan University, No. 168, Hong Kong Road, Jiang'an District, Wuhan, 430015, Hubei, China
| | - Jun Yin
- Department of Cardiology, The Sixth Hospital of Wuhan, Affiliated Hospital of Jianghan University, No. 168, Hong Kong Road, Jiang'an District, Wuhan, 430015, Hubei, China
| | - Yong Zou
- Department of Cardiology, The Sixth Hospital of Wuhan, Affiliated Hospital of Jianghan University, No. 168, Hong Kong Road, Jiang'an District, Wuhan, 430015, Hubei, China.
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Lynn H, Sun X, Casanova NG, Bime C, Reyes Hernon V, Lanham C, Oita RC, Ramos N, Sun B, Coletta DK, Camp SM, Karnes JH, Ellis NA, Garcia JG. Linkage of NAMPT promoter variants to eNAMPT secretion, plasma eNAMPT levels, and ARDS severity. Ther Adv Respir Dis 2023; 17:17534666231181262. [PMID: 37477094 PMCID: PMC10363883 DOI: 10.1177/17534666231181262] [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: 10/28/2022] [Accepted: 05/25/2023] [Indexed: 07/22/2023] Open
Abstract
BACKGROUND AND OBJECTIVES eNAMPT (extracellular nicotinamide phosphoribosyltransferase), a novel DAMP and TLR4 ligand, is a druggable ARDS therapeutic target with NAMPT promoter SNPs associated with ARDS severity. This study assesses the previously unknown influence of NAMPT promoter SNPs on NAMPT transcription, eNAMPT secretion, and ARDS severity. METHODS AND DESIGN Human lung endothelial cells (ECs) transfected with NAMPT promoter luciferase reporters harboring SNPs G-1535A, A-1001 C, and C-948A, were exposed to LPS or LPS/18% cyclic stretch (CS) and NAMPT promoter activity, NAMPT protein expression, and secretion assessed. NAMPT genotypes and eNAMPT plasma measurements (Days 0/7) were assessed in two ARDS cohorts (DISCOVERY n = 428; ALVEOLI n = 103). RESULTS Comparisons of minor allelic frequency (MAF) in both ARDS cohorts with the 1000 Human Genome Project revealed the G-1535A and C-948A SNPs to be significantly associated with ARDS in Blacks compared with controls and trended toward significance in non-Hispanic Whites. LPS-challenged and LPS/18% CS-challenged EC harboring the -1535G wild-type allele exhibited significantly increased NAMPT promoter activity (compared with -1535A) with the -1535G/-948A diplotype exhibiting significantly increased NAMPT promoter activity, NAMPT protein expression, and eNAMPT secretion compared with the -1535A/-948 C diplotype. Highly significant increases in Day 0 eNAMPT plasma values were observed in both DISCOVERY and ALVEOLI ARDS cohorts (compared with healthy controls). Among subjects surviving to Day 7, Day 7 eNAMPT values were significantly increased in Day 28 non-survivors versus survivors. The protective -1535A SNP allele drove -1535A/-1001A and -1535A/-948 C diplotypes that confer significantly reduced ARDS risk (compared with -1535G, -1535G/-1001 C, -1535G/-948A), particularly in Black ARDS subjects. NAMPT SNP comparisons within the two ARDS cohorts did not identify significant association with either APACHE III scores or plasma eNAMPT levels. CONCLUSION NAMPT SNPs influence promoter activity, eNAMPT protein expression/secretion, plasma eNAMPT levels, and ARDS severity. NAMPT genotypes are a potential tool for stratification in eNAMPT-focused ARDS clinical trials.
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Affiliation(s)
- Heather Lynn
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Xiaoguang Sun
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Nancy G. Casanova
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Christian Bime
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | | | - Clayton Lanham
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Radu C. Oita
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Nikolas Ramos
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Belinda Sun
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Dawn K. Coletta
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Sara M. Camp
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Jason H. Karnes
- College of Pharmacy, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Nathan A. Ellis
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Joe G.N. Garcia
- Dr. Herbert A. Wertheim Professor of Inflammation Science, Director, Center for Inflammation Science and Systems Medicine, University of Florida Scripps Research Institute, Jupiter, FL 33458, USA
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Tumurkhuu G, Casanova NG, Kempf CL, Ercan Laguna D, Camp SM, Dagvadorj J, Song JH, Reyes Hernon V, Travelli C, Montano EN, Yu JM, Ishimori M, Wallace DJ, Sammani S, Jefferies C, Garcia JG. eNAMPT/TLR4 inflammatory cascade activation is a key contributor to SLE Lung vasculitis and alveolar hemorrhage. J Transl Autoimmun 2022; 6:100181. [PMID: 36619655 PMCID: PMC9816774 DOI: 10.1016/j.jtauto.2022.100181] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 12/17/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022] Open
Abstract
Rationale Effective therapies to reduce the severity and high mortality of pulmonary vasculitis and diffuse alveolar hemorrhage (DAH) in patients with systemic lupus erythematosus (SLE) is a serious unmet need. We explored whether biologic neutralization of eNAMPT (extracellular nicotinamide phosphoribosyl-transferase), a novel DAMP and Toll-like receptor 4 ligand, represents a viable therapeutic strategy in lupus vasculitis. Methods Serum was collected from SLE subjects (n = 37) for eNAMPT protein measurements. In the preclinical pristane-induced murine model of lung vasculitis/hemorrhage, C57BL/6 J mice (n = 5-10/group) were treated with PBS, IgG (1 mg/kg), or the eNAMPT-neutralizing ALT-100 mAb (1 mg/kg, IP or subcutaneously (SQ). Lung injury evaluation (Day 10) included histology/immuno-histochemistry, BAL protein/cellularity, tissue biochemistry, RNA sequencing, and plasma biomarker assessment. Results SLE subjects showed highly significant increases in blood NAMPT mRNA expression and eNAMPT protein levels compared to healthy controls. Preclinical pristane-exposed mice studies showed significantly increased NAMPT lung tissue expression and increased plasma eNAMPT levels accompanied by marked increases in alveolar hemorrhage and lung inflammation (BAL protein, PMNs, activated monocytes). In contrast, ALT-100 mAb-treated mice showed significant attenuation of inflammatory lung injury, alveolar hemorrhage, BAL protein, tissue leukocytes, and plasma inflammatory cytokines (eNAMPT, IL-6, IL-8). Lung RNA sequencing showed pristane-induced activation of inflammatory genes/pathways including NFkB, cytokine/chemokine, IL-1β, and MMP signaling pathways, each rectified in ALT-100 mAb-treated mice. Conclusions These findings highlight the role of eNAMPT/TLR4-mediated inflammatory signaling in the pathobiology of SLE pulmonary vasculitis and alveolar hemorrhage. Biologic neutralization of this novel DAMP appears to serve as a viable strategy to reduce the severity of SLE lung vasculitis.
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Affiliation(s)
- Gantsetseg Tumurkhuu
- Department of Medicine, Division of Rheumatology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
- Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Nancy G. Casanova
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Carrie L. Kempf
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Duygu Ercan Laguna
- Department of Medicine, Division of Rheumatology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
- Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Sara M. Camp
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | | | - Jin H. Song
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Vivian Reyes Hernon
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | | | - Erica N. Montano
- Department of Medicine, Division of Rheumatology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
- Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Jeong Min Yu
- Department of Medicine, Division of Rheumatology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Mariko Ishimori
- Department of Medicine, Division of Rheumatology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
- David Geffen School of Medicine at University of California Los Angeles (UCLA), Los Angeles, CA, USA
| | - Daniel J. Wallace
- Department of Medicine, Division of Rheumatology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
- David Geffen School of Medicine at University of California Los Angeles (UCLA), Los Angeles, CA, USA
| | - Saad Sammani
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Caroline Jefferies
- Department of Medicine, Division of Rheumatology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
- Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Joe G.N. Garcia
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
- Corresponding author. University of Arizona Health Sciences, USA.
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He C, Chen Z, Huang J, Gan R, Wang J, Wang L, Li D, Yao J, Hussain T. Interleukin-22 Ameliorates Dextran Sulfate Sodium-Induced Colitis through the Upregulation of lncRNA-UCL to Accelerate Claudin-1 Expression via Sequestering miR-568 in Mice. Oxidative Medicine and Cellular Longevity 2022; 2022:1-18. [PMID: 36092152 PMCID: PMC9453001 DOI: 10.1155/2022/8543720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/03/2022] [Accepted: 08/05/2022] [Indexed: 11/28/2022]
Abstract
Background Bioactive compound such as interleukin-22 (IL-22) treatment is regarded as a sufficient treatment for ulcerative colitis (UC). It has been found that long noncoding RNAs (lncRNAs) expressed in many inflammatory diseases, including UC. We aimed to verify the treatment effect of bioactive compounds including IL-22 and lncRNAs in UC on colitis mice. Methods UC mice were induced using DSS, followed by IL-22 or PBS intraperitoneally (i.p.) injection. Then, the histopathological parameters of the mice were determined. Then, RNA sequencing was performed to screen the differential lncRNAs. Quantitative real-time PCR (qRT-PCR) and lentivirus identified lncRNA-Ulcerative Colitis lncRNA (lncRNA-UCL) were regarded as the molecular regulator of the colitis mice. The correlation with lncRNA-UCL and mmu-miR-568 was validated using RNA-pulldown. Meanwhile, claudin-1 was predicted and confirmed as the target molecule of mmu-miR-568 using dual-luciferase assay. Results IL-22 could significantly improve the histopathological features and decrease proinflammatory cytokine production in UC mice induced by DSS. It also can stimulate intestinal epithelial cell (IEC) reproduction and prevention of apoptosis. lncRNA-UCL was significantly downregulated in UC mice caused by DSS, while IL-22 treatment effectively reversed this effect. In terms of mechanism, lncRNA-UCL regulates intestinal epithelial homeostasis by sequestering mmu-miR-568 and maintaining close integrated protein expression, such as claudin-1. Conclusions We have demonstrated the incredible role of bioactive compound, such as IL-22, in alleviating DSS-induced colitis symptoms via enhancing lncRNA-UCL expression. It can be regulated using tight junction (TJ) protein.
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9
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Sammani S, Bermudez T, Kempf CL, Song JH, Fleming JC, Reyes Hernon V, Hufford M, Tang L, Cai H, Camp SM, Natarajan V, Jacobson JR, Dudek SM, Martin DR, Karmonik C, Sun X, Sun B, Casanova NG, Bime C, Garcia JGN. eNAMPT Neutralization Preserves Lung Fluid Balance and Reduces Acute Renal Injury in Porcine Sepsis/VILI-Induced Inflammatory Lung Injury. Front Physiol 2022; 13:916159. [PMID: 35812318 PMCID: PMC9257134 DOI: 10.3389/fphys.2022.916159] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 05/31/2022] [Indexed: 12/12/2022] Open
Abstract
Background: Numerous potential ARDS therapeutics, based upon preclinical successful rodent studies that utilized LPS challenge without mechanical ventilation, have failed in Phase 2/3 clinical trials. Recently, ALT-100 mAb, a novel biologic that neutralizes the TLR4 ligand and DAMP, eNAMPT (extracellular nicotinamide phosphoribosyltransferase), was shown to reduce septic shock/VILI-induced porcine lung injury when delivered 2 h after injury onset. We now examine the ALT-100 mAb efficacy on acute kidney injury (AKI) and lung fluid balance in a porcine ARDS/VILI model when delivered 6 h post injury.Methods/Results: Compared to control PBS-treated pigs, exposure of ALT-100 mAb-treated pigs (0.4 mg/kg, 2 h or 6 h after injury initiation) to LPS-induced pneumonia/septic shock and VILI (12 h), demonstrated significantly diminished lung injury severity (histology, BAL PMNs, plasma cytokines), biochemical/genomic evidence of NF-kB/MAP kinase/cytokine receptor signaling, and AKI (histology, plasma lipocalin). ALT-100 mAb treatment effectively preserved lung fluid balance reflected by reduced BAL protein/tissue albumin levels, lung wet/dry tissue ratios, ultrasound-derived B lines, and chest radiograph opacities. Delayed ALT-100 mAb at 2 h was significantly more protective than 6 h delivery only for plasma eNAMPT while trending toward greater protection for remaining inflammatory indices. Delayed ALT-100 treatment also decreased lung/renal injury indices in LPS/VILI-exposed rats when delivered up to 12 h after LPS.Conclusions: These studies indicate the delayed delivery of the eNAMPT-neutralizing ALT-100 mAb reduces inflammatory lung injury, preserves lung fluid balance, and reduces multi-organ dysfunction, and may potentially address the unmet need for novel therapeutics that reduce ARDS/VILI mortality.
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Affiliation(s)
- Saad Sammani
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Tadeo Bermudez
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Carrie L. Kempf
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Jin H. Song
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Justin C Fleming
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Vivian Reyes Hernon
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Matthew Hufford
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Lin Tang
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Hua Cai
- Department of Anesthesiology, University of California Los Angeles, Los Angeles, CA, United States
| | - Sara M. Camp
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Viswanathan Natarajan
- Department of Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Jeffrey R. Jacobson
- Department of Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Steven M. Dudek
- Department of Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Diego R. Martin
- Department of Radiology and the Translational Imaging Center, Houston Methodist Hospital and the Houston Methodist Research Institute, Houston, TX, United States
| | - Christof Karmonik
- Department of Radiology and the Translational Imaging Center, Houston Methodist Hospital and the Houston Methodist Research Institute, Houston, TX, United States
| | - Xiaoguang Sun
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Belinda Sun
- Department of Pathology, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Nancy G. Casanova
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Christian Bime
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Joe G. N. Garcia
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
- *Correspondence: Joe G. N. Garcia,
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10
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Bime C, Casanova NG, Camp SM, Oita RC, Ndukum J, Hernon VR, Oh DK, Li Y, Greer PJ, Whitcomb DC, Papachristou GI, Garcia JGN. Circulating eNAMPT as a biomarker in the critically ill: acute pancreatitis, sepsis, trauma, and acute respiratory distress syndrome. BMC Anesthesiol 2022; 22:182. [PMID: 35705899 PMCID: PMC9198204 DOI: 10.1186/s12871-022-01718-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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: 01/31/2022] [Accepted: 05/26/2022] [Indexed: 12/21/2022] Open
Abstract
Background Nicotinamide phosphoribosyltransferase (NAMPT) exhibits dual functionality – as an intracellular enzyme regulating nicotinamide adenine dinucleotide metabolism and as an extracellular secreted protein (eNAMPT) to function as a cytokine regulator of innate immunity via binding to Toll-Like receptor 4 and NF-κB activation. In limited preclinical and clinical studies, eNAMPT was implicated in the pathobiology of acute respiratory distress syndrome (ARDS) suggesting that eNAMPT could potentially serve as a diagnostic and prognostic biomarker. We investigated the feasibility of circulating eNAMPT levels to serve as a biomarker in an expanded cohort of patients with ARDS and ARDS-predisposing conditions that included acute pancreatitis, sepsis, and trauma with comparisons to controls. Methods A total of 671 patients and 179 healthy controls were included in two independent cohorts. Plasma and serum eNAMPT levels were quantified using one of two complementary Enzyme-linked Immunosorbent Assays. After log base 2 variance stabilizing transformation of plasma/serum eNAMPT measurements, differences between healthy controls and each disease cohort were compared using linear regression or a generalized estimating equation (GEE) model where applicable. Complementary analyses included sensitivity, specificity, positive predictive values, negative predictive values, and the area under the receiver operating curve. Results Compared to controls, circulating eNAMPT levels were significantly elevated in subjects with acute pancreatitis, sepsis, trauma, and ARDS (all p < 0.01). In the acute pancreatitis cohort, circulating eNAMPT levels positively correlated with disease severity (p < 0.01). Conclusions Circulating eNAMPT levels are novel biomarker in the critically ill with acute pancreatitis, sepsis, trauma, and/or ARDS with the potential to reflect disease severity. Supplementary Information The online version contains supplementary material available at 10.1186/s12871-022-01718-1.
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Affiliation(s)
- Christian Bime
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Nancy G Casanova
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Sara M Camp
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Radu C Oita
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Juliet Ndukum
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Vivian Reyes Hernon
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Dong Kyu Oh
- University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Yansong Li
- US Army Institute of Surgical Research, San Antonio, TX, USA
| | - Phil J Greer
- University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.,Ariel Precision Medicine, Pittsburgh, PA, USA
| | - David C Whitcomb
- University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Georgios I Papachristou
- University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.,Ohio State University College of Medicine, Columbus, OH, USA
| | - Joe G N Garcia
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA.
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11
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Garcia AN, Casanova NG, Kempf CL, Bermudez T, Valera DG, Song JH, Sun X, Cai H, Moreno-Vinasco L, Gregory T, Oita RC, Hernon VR, Camp SM, Rogers C, Kyubwa EM, Menon N, Axtelle J, Rappaport J, Bime C, Sammani S, Cress AE, Garcia JGN. eNAMPT Is a Novel Damage-associated Molecular Pattern Protein That Contributes to the Severity of Radiation-induced Lung Fibrosis. Am J Respir Cell Mol Biol 2022; 66:497-509. [PMID: 35167418 PMCID: PMC9116358 DOI: 10.1165/rcmb.2021-0357oc] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [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: 08/10/2021] [Accepted: 12/17/2021] [Indexed: 11/24/2022] Open
Abstract
The paucity of therapeutic strategies to reduce the severity of radiation-induced lung fibrosis (RILF), a life-threatening complication of intended or accidental ionizing radiation exposure, is a serious unmet need. We evaluated the contribution of eNAMPT (extracellular nicotinamide phosphoribosyltransferase), a damage-associated molecular pattern (DAMP) protein and TLR4 (Toll-like receptor 4) ligand, to the severity of whole-thorax lung irradiation (WTLI)-induced RILF. Wild-type (WT) and Nampt+/- heterozygous C57BL6 mice and nonhuman primates (NHPs, Macaca mulatta) were exposed to a single WTLI dose (9.8 or 10.7 Gy for NHPs, 20 Gy for mice). WT mice received IgG1 (control) or an eNAMPT-neutralizing polyclonal or monoclonal antibody (mAb) intraperitoneally 4 hours after WTLI and weekly thereafter. At 8-12 weeks after WTLI, NAMPT expression was assessed by immunohistochemistry, biochemistry, and plasma biomarker studies. RILF severity was determined by BAL protein/cells, hematoxylin and eosin, and trichrome blue staining and soluble collagen assays. RNA sequencing and bioinformatic analyses identified differentially expressed lung tissue genes/pathways. NAMPT lung tissue expression was increased in both WTLI-exposed WT mice and NHPs. Nampt+/- mice and eNAMPT polyclonal antibody/mAb-treated mice exhibited significantly attenuated WTLI-mediated lung fibrosis with reduced: 1) NAMPT and trichrome blue staining; 2) dysregulated lung tissue expression of smooth muscle actin, p-SMAD2/p-SMAD1/5/9, TGF-β, TSP1 (thrombospondin-1), NOX4, IL-1β, and NRF2; 3) plasma eNAMPT and IL-1β concentrations; and 4) soluble collagen. Multiple WTLI-induced dysregulated differentially expressed lung tissue genes/pathways with known tissue fibrosis involvement were each rectified in mice receiving eNAMPT mAbs.The eNAMPT/TLR4 inflammatory network is essentially involved in radiation pathobiology, with eNAMPT neutralization an effective therapeutic strategy to reduce RILF severity.
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Affiliation(s)
| | | | | | | | | | | | | | - Hua Cai
- Department of Anesthesiology, University of California Los Angeles, Los Angeles, California
| | | | | | | | | | | | | | | | | | | | - Jay Rappaport
- Tulane National Primate Research Center, New Orleans, Louisiana
| | | | | | - Anne E. Cress
- Department of Cell and Molecular Medicine, University of Arizona Health Sciences, Tucson, Arizona
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12
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Gong H, Chen H, Xiao P, Huang N, Han X, Zhang J, Yang Y, Li T, Zhao T, Tai H, Xu W, Zhang G, Gong C, Yang M, Tang X, Xiao H. miR-146a impedes the anti-aging effect of AMPK via NAMPT suppression and NAD +/SIRT inactivation. Signal Transduct Target Ther 2022; 7:66. [PMID: 35241643 DOI: 10.1038/s41392-022-00886-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 11/14/2021] [Accepted: 01/03/2022] [Indexed: 02/06/2023] Open
Abstract
Nicotinamide adenine dinucleotide (NAD+) is indispensable for the anti-aging activity of the sirtuin (SIRT) family enzymes. AMP-activated protein kinase (AMPK) upregulates NAD+ synthesis and SIRT activity in a nicotinamide phosphoribosyltransferase (NAMPT)-dependent manner. However, the molecular mechanisms that affect AMPK-driven NAMPT expression and NAD+/SIRT activation remain unclear. In this study, we tried to identify senescence-associated microRNAs (miRNAs) that negatively regulate the cascade linking AMPK and NAMPT expression. miRNA-screening experiments showed that the expression of miR-146a increased in senescent cells but decreased following AMPK activation. Additionally, miR-146a overexpression weakened the metformin-mediated upregulation of NAMPT expression, NAD+ synthesis, SIRT activity, and senescence protection, whereas treatment with the miR-146a inhibitor reversed this effect. Importantly, these findings were observed both in vitro and in vivo. Mechanistically, miR-146a directly targeted the 3′-UTR of Nampt mRNA to reduce the expression of NAMPT. AMPK activators metformin and 5-aminoimidazole-4-carboxamide (AICAR) hindered miR-146a expression at the transcriptional level by promoting IκB kinase (IKK) phosphorylation to attenuate nuclear factor-kappaB (NF-κB) activity. These findings identified a novel cascade that negatively regulates the NAD+/SIRT pathway by suppressing miR-146a-mediated NAMPT downregulation. Furthermore, our results showed that miR-146a impedes the anti-aging effect of AMPK. This mutual inhibitory relationship between miR-146a and AMPK enriches our understanding of the molecular connections between AMPK and SIRT and provides new insight into miRNA-mediated NAD+/SIRT regulation and an intervention point for the prevention of aging and age-related diseases.
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13
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Bermudez T, Sammani S, Song JH, Hernon VR, Kempf CL, Garcia AN, Burt J, Hufford M, Camp SM, Cress AE, Desai AA, Natarajan V, Jacobson JR, Dudek SM, Cancio LC, Alvarez J, Rafikov R, Li Y, Zhang DD, Casanova NG, Bime C, Garcia JGN. eNAMPT neutralization reduces preclinical ARDS severity via rectified NFkB and Akt/mTORC2 signaling. Sci Rep 2022; 12:696. [PMID: 35027578 PMCID: PMC8758770 DOI: 10.1038/s41598-021-04444-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [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: 05/04/2021] [Accepted: 12/22/2021] [Indexed: 12/18/2022] Open
Abstract
Despite encouraging preclinical data, therapies to reduce ARDS mortality remains a globally unmet need, including during the COVID-19 pandemic. We previously identified extracellular nicotinamide phosphoribosyltransferase (eNAMPT) as a novel damage-associated molecular pattern protein (DAMP) via TLR4 ligation which regulates inflammatory cascade activation. eNAMPT is tightly linked to human ARDS by biomarker and genotyping studies in ARDS subjects. We now hypothesize that an eNAMPT-neutralizing mAb will significantly reduce the severity of ARDS lung inflammatory lung injury in diverse preclinical rat and porcine models. Sprague Dawley rats received eNAMPT mAb intravenously following exposure to intratracheal lipopolysaccharide (LPS) or to a traumatic blast (125 kPa) but prior to initiation of ventilator-induced lung injury (VILI) (4 h). Yucatan minipigs received intravenous eNAMPT mAb 2 h after initiation of septic shock and VILI (12 h). Each rat/porcine ARDS/VILI model was strongly associated with evidence of severe inflammatory lung injury with NFkB pathway activation and marked dysregulation of the Akt/mTORC2 signaling pathway. eNAMPT neutralization dramatically reduced inflammatory indices and the severity of lung injury in each rat/porcine ARDS/VILI model (~ 50% reduction) including reduction in serum lactate, and plasma levels of eNAMPT, IL-6, TNFα and Ang-2. The eNAMPT mAb further rectified NFkB pathway activation and preserved the Akt/mTORC2 signaling pathway. These results strongly support targeting the eNAMPT/TLR4 inflammatory pathway as a potential ARDS strategy to reduce inflammatory lung injury and ARDS mortality.
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Affiliation(s)
- Tadeo Bermudez
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Saad Sammani
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Jin H Song
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Vivian Reyes Hernon
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Carrie L Kempf
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Alexander N Garcia
- Department of Radiation Oncology, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Jessica Burt
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Matthew Hufford
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Sara M Camp
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Anne E Cress
- Department of Cellular and Molecular Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Ankit A Desai
- Department of Medicine, Indiana University, Indianapolis, IN, USA
| | | | - Jeffrey R Jacobson
- Department of Medicine, University of Illinois Chicago, Chicago, IL, USA
| | - Steven M Dudek
- Department of Medicine, University of Illinois Chicago, Chicago, IL, USA
| | | | - Julie Alvarez
- Institute of Surgical Research, San Antonio, TX, USA
| | - Ruslan Rafikov
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Yansong Li
- Institute of Surgical Research, San Antonio, TX, USA
| | - Donna D Zhang
- College of Pharmacy, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Nancy G Casanova
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Christian Bime
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Joe G N Garcia
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA.
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14
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Garcia AN, Casanova NG, Valera DG, Sun X, Song JH, Kempf CL, Moreno-Vinasco L, Burns K, Bermudez T, Valdez M, Cuellar G, Gregory T, Oita RC, Hernon VR, Barber C, Camp SM, Martin D, Liu Z, Bime C, Sammani S, Cress AE, Garcia JG. Involvement of eNAMPT/TLR4 signaling in murine radiation pneumonitis: protection by eNAMPT neutralization. Transl Res 2022; 239:44-57. [PMID: 34139379 PMCID: PMC8671169 DOI: 10.1016/j.trsl.2021.06.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/07/2021] [Accepted: 06/10/2021] [Indexed: 01/03/2023]
Abstract
Therapeutic strategies to prevent or reduce the severity of radiation pneumonitis are a serious unmet need. We evaluated extracellular nicotinamide phosphoribosyltransferase (eNAMPT), a damage-associated molecular pattern protein (DAMP) and Toll-Like Receptor 4 (TLR4) ligand, as a therapeutic target in murine radiation pneumonitis. Radiation-induced murine and human NAMPT expression was assessed in vitro, in tissues (IHC, biochemistry, imaging), and in plasma. Wild type C57Bl6 mice (WT) and Nampt+/- heterozygous mice were exposed to 20Gy whole thoracic lung irradiation (WTLI) with or without weekly IP injection of IgG1 (control) or an eNAMPT-neutralizing polyclonal (pAb) or monoclonal antibody (mAb). BAL protein/cells and H&E staining were used to generate a WTLI severity score. Differentially-expressed genes (DEGs)/pathways were identified by RNA sequencing and bioinformatic analyses. Radiation exposure increases in vitro NAMPT expression in lung epithelium (NAMPT promoter activity) and NAMPT lung tissue expression in WTLI-exposed mice. Nampt+/- mice and eNAMPT pAb/mAb-treated mice exhibited significant histologic attenuation of WTLI-mediated lung injury with reduced levels of BAL protein and cells, and plasma levels of eNAMPT, IL-6, and IL-1β. Genomic and biochemical studies from WTLI-exposed lung tissues highlighted dysregulation of NFkB/cytokine and MAP kinase signaling pathways which were rectified by eNAMPT mAb treatment. The eNAMPT/TLR4 pathway is essentially involved in radiation pathobiology with eNAMPT neutralization an effective therapeutic strategy to reduce the severity of radiation pneumonitis.
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Affiliation(s)
- Alexander N Garcia
- Department of Radiation Oncology, University of Arizona Health Sciences, Tucson, Arizona
| | - Nancy G Casanova
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Daniel G Valera
- Department of Radiation Oncology, University of Arizona Health Sciences, Tucson, Arizona
| | - Xiaoguang Sun
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Jin H Song
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Carrie L Kempf
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | | | - Kimberlie Burns
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Tadeo Bermudez
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Mia Valdez
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Genesis Cuellar
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Taylor Gregory
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Radu C Oita
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Vivian Reyes Hernon
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Christy Barber
- Department of Medical Imaging, University of Arizona Health Sciences, Tucson, Arizona
| | - Sara M Camp
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Diego Martin
- Department of Radiology and the Translational Imaging Center, Houston Methodist Research Institute, Houston, Texas
| | - Zhonglin Liu
- Department of Medical Imaging, University of Arizona Health Sciences, Tucson, Arizona
| | - Christian Bime
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Saad Sammani
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Anne E Cress
- Department of Cell and Molecular Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Joe Gn Garcia
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona.
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15
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Quijada H, Bermudez T, Kempf CL, Valera DG, Garcia AN, Camp SM, Song JH, Franco E, Burt JK, Sun B, Mascarenhas JB, Burns K, Gaber A, Oita RC, Reyes Hernon V, Barber C, Moreno-Vinasco L, Sun X, Cress AE, Martin D, Liu Z, Desai AA, Natarajan V, Jacobson JR, Dudek SM, Bime C, Sammani S, Garcia JG. Endothelial eNAMPT amplifies pre-clinical acute lung injury: efficacy of an eNAMPT-neutralising monoclonal antibody. Eur Respir J 2021; 57:2002536. [PMID: 33243842 PMCID: PMC8100338 DOI: 10.1183/13993003.02536-2020] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 11/05/2020] [Indexed: 12/11/2022]
Abstract
RATIONALE The severe acute respiratory syndrome coronavirus 2/coronavirus disease 2019 pandemic has highlighted the serious unmet need for effective therapies that reduce acute respiratory distress syndrome (ARDS) mortality. We explored whether extracellular nicotinamide phosphoribosyltransferase (eNAMPT), a ligand for Toll-like receptor (TLR)4 and a master regulator of innate immunity and inflammation, is a potential ARDS therapeutic target. METHODS Wild-type C57BL/6J or endothelial cell (EC)-cNAMPT -/- knockout mice (targeted EC NAMPT deletion) were exposed to either a lipopolysaccharide (LPS)-induced ("one-hit") or a combined LPS/ventilator ("two-hit")-induced acute inflammatory lung injury model. A NAMPT-specific monoclonal antibody (mAb) imaging probe (99mTc-ProNamptor) was used to detect NAMPT expression in lung tissues. Either an eNAMPT-neutralising goat polyclonal antibody (pAb) or a humanised monoclonal antibody (ALT-100 mAb) were used in vitro and in vivo. RESULTS Immunohistochemical, biochemical and imaging studies validated time-dependent increases in NAMPT lung tissue expression in both pre-clinical ARDS models. Intravenous delivery of either eNAMPT-neutralising pAb or mAb significantly attenuated inflammatory lung injury (haematoxylin and eosin staining, bronchoalveolar lavage (BAL) protein, BAL polymorphonuclear cells, plasma interleukin-6) in both pre-clinical models. In vitro human lung EC studies demonstrated eNAMPT-neutralising antibodies (pAb, mAb) to strongly abrogate eNAMPT-induced TLR4 pathway activation and EC barrier disruption. In vivo studies in wild-type and EC-cNAMPT -/- mice confirmed a highly significant contribution of EC-derived NAMPT to the severity of inflammatory lung injury in both pre-clinical ARDS models. CONCLUSIONS These findings highlight both the role of EC-derived eNAMPT and the potential for biologic targeting of the eNAMPT/TLR4 inflammatory pathway. In combination with predictive eNAMPT biomarker and NAMPT genotyping assays, this offers the opportunity to identify high-risk ARDS subjects for delivery of personalised medicine.
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Affiliation(s)
- Hector Quijada
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
- Co-first authors
| | - Tadeo Bermudez
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
- Co-first authors
| | - Carrie L. Kempf
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Daniel G. Valera
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Alexander N. Garcia
- Dept of Radiation Oncology, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Sara M. Camp
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Jin H. Song
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Evelyn Franco
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Jessica K. Burt
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Belinda Sun
- Dept of Pathology, University of Arizona Health Sciences, Tucson, AZ, USA
| | | | - Kimberlie Burns
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Amir Gaber
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Radu C. Oita
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | | | - Christy Barber
- Dept of Medical Imaging, University of Arizona Health Sciences, Tucson, AZ, USA
| | | | - Xiaoguang Sun
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Anne E. Cress
- Dept of Cellular and Molecular Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Diego Martin
- Houston Methodist Hospital Research Institute, Houston, TX, USA
| | - Zhonglin Liu
- Dept of Medical Imaging, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Ankit A. Desai
- Dept of Medicine, Indiana University, Indianapolis IN, USA
| | | | | | - Steven M. Dudek
- Dept of Medicine, University of Illinois Chicago, Chicago, IL, USA
| | - Christian Bime
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Saad Sammani
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
- Co-senior authors
| | - Joe G.N. Garcia
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
- Co-senior authors
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16
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Pang XX, Ansari AR, Yang WJ, Niu XY, Dong L, Li HZ, Xu FL, Zhang ZW, Xiao K, Hui S. Visfatin Regulates Inflammatory Mediators in Mouse Intestinal Mucosa Through Toll-Like Receptors Signaling Under Lipopolysaccharide Stress. Arch Immunol Ther Exp (Warsz) 2021; 69:11. [PMID: 33856572 DOI: 10.1007/s00005-021-00611-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 02/12/2021] [Indexed: 01/06/2023]
Abstract
Visfatin is a multifunctional protein involved in inflammatory immune stress. The aim of current study was to explore the role of visfatin in lipopolysaccharide (LPS)-induced intestinal mucosal inflammation and to confirm its cellular effect in inflammatory immune response through silencing of Toll-like receptors (TLRs). We divided Kunming mice into three groups: Saline group, LPS group, and LPS + visfatin group and performed hematoxylin and eosin staining, immunohistochemistry, quantitative polymerase chain reaction, Western blot, enzyme linked immunosorbent assay and RNA-seq analysis. Pretreatment of visfatin improves LPS-stimulated reduction of tight junction protein 1 (ZO-1) and secretory immunoglobulin A, inhibits overexpression of Claudin-1 and vascular endothelial growth factor, and reduces intestinal mucosal damage and inflammation. RNA-seq analysis of cellular transcriptomes indicated that visfatin is involved in down-regulation of mRNA level of TLR4 as well as attenuation of protein levels of TLR8 and nucleotide-binding oligomerization domain-containing protein 2, revealing that visfatin could reduce intestinal mucosal inflammation through TLR signaling pathway in mice ileum. In RAW264.7 cells, the genes silencing of Toll/IL-1R family, such as TLR4, TLR2, and IL-1R1, was accompanied by decreased expressions of inflammatory factors (TNF-α, IL-1β, IL-6 and MCP-1) along with lower cellular visfatin levels. Hence, visfatin maintains the intestinal mucosal barrier structure and attenuates the intestinal mucosal inflammation through the TLR signaling pathway. Likewise, the Toll/IL-1R family regulates the release of visfatin, which can participate in the inflammatory reaction through the regulation of inflammatory factors.
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Cheleschi S, Tenti S, Barbarino M, Giannotti S, Bellisai F, Frati E, Fioravanti A. Exploring the Crosstalk between Hydrostatic Pressure and Adipokines: An In Vitro Study on Human Osteoarthritic Chondrocytes. Int J Mol Sci 2021; 22:2745. [PMID: 33803113 DOI: 10.3390/ijms22052745] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Accepted: 03/02/2021] [Indexed: 02/07/2023] Open
Abstract
Obesity is a risk factor for osteoarthritis (OA) development and progression due to an altered biomechanical stress on cartilage and an increased release of inflammatory adipokines from adipose tissue. Evidence suggests an interplay between loading and adipokines in chondrocytes metabolism modulation. We investigated the role of loading, as hydrostatic pressure (HP), in regulating visfatin-induced effects in human OA chondrocytes. Chondrocytes were stimulated with visfatin (24 h) and exposed to high continuous HP (24 MPa, 3 h) in the presence of visfatin inhibitor (FK866, 4 h pre-incubation). Apoptosis and oxidative stress were detected by cytometry, B-cell lymphoma (BCL)2, metalloproteinases (MMPs), type II collagen (Col2a1), antioxidant enzymes, miRNA, cyclin D1 expressions by real-time PCR, and β-catenin protein by western blot. HP exposure or visfatin stimulus significantly induced apoptosis, superoxide anion production, and MMP-3, -13, antioxidant enzymes, and miRNA gene expression, while reducing Col2a1 and BCL2 mRNA. Both stimuli significantly reduced β-catenin protein and increased cyclin D1 gene expression. HP exposure exacerbated visfatin-induced effects, which were counteracted by FK866 pre-treatment. Our data underline the complex interplay between loading and visfatin in controlling chondrocytes' metabolism, contributing to explaining the role of obesity in OA etiopathogenesis, and confirming the importance of controlling body weight for disease treatment.
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Fujimoto S, Fujita Y, Kadota T, Araya J, Kuwano K. Intercellular Communication by Vascular Endothelial Cell-Derived Extracellular Vesicles and Their MicroRNAs in Respiratory Diseases. Front Mol Biosci 2021; 7:619697. [PMID: 33614707 PMCID: PMC7890564 DOI: 10.3389/fmolb.2020.619697] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 12/30/2020] [Indexed: 12/12/2022] Open
Abstract
Respiratory diseases and their comorbidities, such as cardiovascular disease and muscle atrophy, have been increasing in the world. Extracellular vesicles (EVs), which include exosomes and microvesicles, are released from almost all cell types and play crucial roles in intercellular communication, both in the regulation of homeostasis and the pathogenesis of various diseases. Exosomes are of endosomal origin and range in size from 50 to 150 nm in diameter, while microvesicles are generated by the direct outward budding of the plasma membrane in size ranges of 100-2,000 nm in diameter. EVs can contain various proteins, metabolites, and nucleic acids, such as mRNA, non-coding RNA species, and DNA fragments. In addition, these nucleic acids in EVs can be functional in recipient cells through EV cargo. The endothelium is a distributed organ of considerable biological importance, and disrupted endothelial function is involved in the pathogenesis of respiratory diseases such as chronic obstructive pulmonary disease, pulmonary hypertension, and acute respiratory distress syndrome. Endothelial cell-derived EVs (EC-EVs) play crucial roles in both physiological and pathological conditions by traveling to distant sites through systemic circulation. This review summarizes the pathological roles of vascular microRNAs contained in EC-EVs in respiratory diseases, mainly focusing on chronic obstructive pulmonary disease, pulmonary hypertension, and acute respiratory distress syndrome. Furthermore, this review discusses the potential clinical usefulness of EC-EVs as therapeutic agents in respiratory diseases.
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Affiliation(s)
- Shota Fujimoto
- Division of Respiratory Disease, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Yu Fujita
- Division of Respiratory Disease, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan.,Department of Translational Research for Exosomes, The Jikei University School of Medicine, Tokyo, Japan
| | - Tsukasa Kadota
- Division of Respiratory Disease, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Jun Araya
- Division of Respiratory Disease, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Kazuyoshi Kuwano
- Division of Respiratory Disease, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
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Pitangui NS, de Lacorte Singulani J, Sardi JCO, de Souza PC, Rodríguez-Arellanes G, García-Pérez BE, Enguita FJ, Pavan FR, Taylor ML, Mendes-Giannini MJS, Fusco-Almeida AM. Differential miRNA Expression in Human Macrophage-Like Cells Infected with Histoplasma capsulatum Yeasts Cultured in Planktonic and Biofilm Forms. J Fungi (Basel) 2021; 7:60. [PMID: 33477397 DOI: 10.3390/jof7010060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 11/19/2020] [Indexed: 12/14/2022] Open
Abstract
Histoplasma capsulatum affects healthy and immunocompromised individuals, sometimes causing a severe disease. This fungus has two morphotypes, the mycelial (infective) and the yeast (parasitic) phases. MicroRNAs (miRNAs) are small RNAs involved in the regulation of several cellular processes, and their differential expression has been associated with many disease states. To investigate miRNA expression in host cells during H. capsulatum infection, we studied the changes in the miRNA profiles of differentiated human macrophages infected with yeasts from two fungal strains with different virulence, EH-315 (high virulence) and 60I (low virulence) grown in planktonic cultures, and EH-315 grown in biofilm form. MiRNA profiles were evaluated by means of reverse transcription-quantitative polymerase chain reaction using a commercial human miRNome panel. The target genes of the differentially expressed miRNAs and their corresponding signaling pathways were predicted using bioinformatics analyses. Here, we confirmed biofilm structures were present in the EH-315 culture whose conditions facilitated producing insoluble exopolysaccharide and intracellular polysaccharides. In infected macrophages, bioinformatics analyses revealed especially increased (hsa-miR-99b-3p) or decreased (hsa-miR-342-3p) miRNAs expression levels in response to infection with biofilms or both growth forms of H. capsulatum yeasts, respectively. The results of miRNAs suggested that infection by H. capsulatum can affect important biological pathways of the host cell, targeting two genes: one encoding a protein that is important in the cortical cytoskeleton; the other, a protein involved in the formation of stress granules. Expressed miRNAs in the host’s response could be proposed as new therapeutic and/or diagnostic tools for histoplasmosis.
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Sun BL, Sun X, Casanova N, Garcia AN, Oita R, Algotar AM, Camp SM, Hernon VR, Gregory T, Cress AE, Garcia JGN. Role of secreted extracellular nicotinamide phosphoribosyltransferase (eNAMPT) in prostate cancer progression: Novel biomarker and therapeutic target. EBioMedicine 2020; 61:103059. [PMID: 33045468 PMCID: PMC7559260 DOI: 10.1016/j.ebiom.2020.103059] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [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: 06/21/2020] [Revised: 09/13/2020] [Accepted: 09/23/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND There remains a serious need to prevent the progression of invasive prostate cancer (PCa). We previously showed that secreted extracellular nicotinamide phosphoribosyltransferase (eNAMPT) is a multifunctional innate immunity regulator via TLR4 ligation which has been implicated in PCa progression. Here we investigate the role of eNAMPT as a diagnostic biomarker and therapeutic target in the progression of PCa. METHODS Tumor NAMPT expression and plasma eNAMPT level were evaluated in human subjects with various PCa tumor stages and high risk subjects followed-up clinically for PCa. The genetic regulation of NAMPT expression in PCa cells and the role of eNAMPT in PCa invasion were investigated utilizing in vitro and in vivo models. FINDINGS Marked NAMPT expression was detected in human extraprostatic-invasive PCa tissues compared to minimal expression of organ-confined PCa. Plasma eNAMPT levels were significantly elevated in PCa subjects compared to male controls, and significantly greater in subjects with extraprostatic-invasive PCa compared to subjects with organ-confined PCa. Plasma eNAMPT levels showed significant predictive value for diagnosing PCa. NAMPT expression and eNAMPT secretion were highly upregulated in human PCa cells in response to hypoxia-inducible factors and EGF. In vitro cell culture and in vivo preclinical mouse model studies confirmed eNAMPT-mediated enhancement of PCa invasiveness into muscle tissues and dramatic attenuation of PCa invasion by weekly treatment with an eNAMPT-neutralizing polyclonal antibody. INTERPRETATION This study suggests that eNAMPT is a potential biomarker for PCa, especially invasive PCa. Neutralization of eNAMPT may be an effective therapeutic approach to prevent PCa invasion and progression.
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Affiliation(s)
- Belinda L Sun
- Department of Pathology, The University of Arizona Health Sciences, United States.
| | - Xiaoguang Sun
- Department of Medicine, The University of Arizona Health Sciences, United States
| | - Nancy Casanova
- Department of Medicine, The University of Arizona Health Sciences, United States
| | - Alexander N Garcia
- Department of Radiation Oncology, The University of Arizona Health Sciences, United States
| | - Radu Oita
- Department of Medicine, The University of Arizona Health Sciences, United States
| | - Amit M Algotar
- Department of Family Medicine, The University of Arizona Health Sciences, United States
| | - Sara M Camp
- Department of Medicine, The University of Arizona Health Sciences, United States
| | - Vivian Reyes Hernon
- Department of Medicine, The University of Arizona Health Sciences, United States
| | - Taylor Gregory
- Department of Medicine, The University of Arizona Health Sciences, United States
| | - Anne E Cress
- Department of Cellular and Molecular Medicine, the University of Arizona Health Sciences, United States
| | - Joe G N Garcia
- Department of Medicine, The University of Arizona Health Sciences, United States.
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21
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Sun X, Sun BL, Babicheva A, Vanderpool R, Oita RC, Casanova N, Tang H, Gupta A, Lynn H, Gupta G, Rischard F, Sammani S, Kempf CL, Moreno-Vinasco L, Ahmed M, Camp SM, Wang J, Desai AA, Yuan JXJ, Garcia JGN. Direct Extracellular NAMPT Involvement in Pulmonary Hypertension and Vascular Remodeling. Transcriptional Regulation by SOX and HIF-2α. Am J Respir Cell Mol Biol 2020; 63:92-103. [PMID: 32142369 DOI: 10.1165/rcmb.2019-0164oc] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [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
We previously demonstrated involvement of NAMPT (nicotinamide phosphoribosyltransferase) in pulmonary arterial hypertension (PAH) and now examine NAMPT regulation and extracellular NAMPT's (eNAMPT's) role in PAH vascular remodeling. NAMPT transcription and protein expression in human lung endothelial cells were assessed in response to PAH-relevant stimuli (PDGF [platelet-derived growth factor], VEGF [vascular endothelial growth factor], TGF-β1 [transforming growth factor-β1], and hypoxia). Endothelial-to-mesenchymal transition was detected by SNAI1 (snail family transcriptional repressor 1) and PECAM1 (platelet endothelial cell adhesion molecule 1) immunofluorescence. An eNAMPT-neutralizing polyclonal antibody was tested in a PAH model of monocrotaline challenge in rats. Plasma eNAMPT concentrations, significantly increased in patients with idiopathic pulmonary arterial hypertension, were highly correlated with indices of PAH severity. eNAMPT increased endothelial-to-mesenchymal transition, and each PAH stimulus significantly increased endothelial cell NAMPT promoter activity involving transcription factors STAT5 (signal transducer and activator of transcription 5), SOX18 (SRY-box transcription factor 18), and SOX17 (SRY-box transcription factor 17), a PAH candidate gene newly defined by genome-wide association study. The hypoxia-induced transcription factor HIF-2α (hypoxia-inducible factor-2α) also potently regulated NAMPT promoter activity, and HIF-2α binding sites were identified between -628 bp and -328 bp. The PHD2 (prolyl hydroxylase domain-containing protein 2) inhibitor FG-4592 significantly increased NAMPT promoter activity and protein expression in an HIF-2α-dependent manner. Finally, the eNAMPT-neutralizing polyclonal antibody significantly reduced monocrotaline-induced vascular remodeling, PAH hemodynamic alterations, and NF-κB activation. eNAMPT is a novel and attractive therapeutic target essential to PAH vascular remodeling.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Mohamed Ahmed
- Department of Pediatrics, University of Arizona Health Sciences, Tucson, Arizona
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Yu QJ, Liang YZ, Mei XP, Fang TY. Tumor mutation burden associated with miRNA-gene interaction outcome mediates the survival of patients with liver hepatocellular carcinoma. EXCLI J 2020; 19:861-871. [PMID: 32665773 PMCID: PMC7355149 DOI: 10.17179/excli2020-1224] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 06/15/2020] [Indexed: 02/06/2023]
Abstract
Tumor mutation burden (TMB) is associated with immunogenic responses and the survival of cancer patients. This study demonstrates how TMB levels impact the immune-related cells, genes, and miRNAs, and how miRNA/gene interactions respond to variations in the survival rate of patients with liver hepatocellular carcinoma (LIHC). LIHC patients were divided into two groups, either a low TMB (< median) or a high TMB (≥ median) group. We found that high TMB plays a positive role in immune-mediated infiltration, generating more CD4 T-cells and memory B cells. Among the 21 immune genes that altered significantly, only C9orf24 and CYP1A1 were expected to up-regulate in LIHC patients with high TMB. A total of 19 miRNAs, which regulate various functional pathways, were significantly altered in patients with LIHC. One of the miRNA/gene pair, hsa-miR-33a/ALDH1A3 was significantly associated with the survival rate of LIHC patients. Our results suggest that LIHC patients with high TMB can be treated more effectively with immunotherapy.
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Affiliation(s)
- Qing-Jiang Yu
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Jiaxing University, Jiaxing 314000, China
| | - Yi-Zhi Liang
- Department of Gastroenterology, Second Affiliated Hospital, Fujian Medical University, Quanzhou 362000, China
| | - Xiao-Ping Mei
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Jiaxing University, Jiaxing 314000, China
| | - Tai-Yong Fang
- Department of Gastroenterology, Second Affiliated Hospital, Fujian Medical University, Quanzhou 362000, China
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23
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de Guia RM, Agerholm M, Nielsen TS, Consitt LA, Søgaard D, Helge JW, Larsen S, Brandauer J, Houmard JA, Treebak JT. Aerobic and resistance exercise training reverses age-dependent decline in NAD + salvage capacity in human skeletal muscle. Physiol Rep 2020; 7:e14139. [PMID: 31207144 PMCID: PMC6577427 DOI: 10.14814/phy2.14139] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 05/08/2019] [Indexed: 12/18/2022] Open
Abstract
Aging decreases skeletal muscle mass and strength, but aerobic and resistance exercise training maintains skeletal muscle function. NAD+ is a coenzyme for ATP production and a required substrate for enzymes regulating cellular homeostasis. In skeletal muscle, NAD+ is mainly generated by the NAD+ salvage pathway in which nicotinamide phosphoribosyltransferase (NAMPT) is rate‐limiting. NAMPT decreases with age in human skeletal muscle, and aerobic exercise training increases NAMPT levels in young men. However, whether distinct modes of exercise training increase NAMPT levels in both young and old people is unknown. We assessed the effects of 12 weeks of aerobic and resistance exercise training on skeletal muscle abundance of NAMPT, nicotinamide riboside kinase 2 (NRK2), and nicotinamide mononucleotide adenylyltransferase (NMNAT) 1 and 3 in young (≤35 years) and older (≥55 years) individuals. NAMPT in skeletal muscle correlated negatively with age (r2 = 0.297, P < 0.001, n = 57), and VO2peak was the best predictor of NAMPT levels. Moreover, aerobic exercise training increased NAMPT abundance 12% and 28% in young and older individuals, respectively, whereas resistance exercise training increased NAMPT abundance 25% and 30% in young and in older individuals, respectively. None of the other proteins changed with exercise training. In a separate cohort of young and old people, levels of NAMPT, NRK1, and NMNAT1/2 in abdominal subcutaneous adipose tissue were not affected by either age or 6 weeks of high‐intensity interval training. Collectively, exercise training reverses the age‐dependent decline in skeletal muscle NAMPT abundance, and our findings highlight the value of exercise training in ameliorating age‐associated deterioration of skeletal muscle function.
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Affiliation(s)
- Roldan M de Guia
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marianne Agerholm
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Thomas S Nielsen
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Leslie A Consitt
- Department of Biomedical Sciences, Ohio Musculoskeletal and Neurological Institute, Diabetes Institute, Ohio University, Athens, Ohio
| | - Ditte Søgaard
- Xlab, Center for Healthy Aging, Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jørn W Helge
- Xlab, Center for Healthy Aging, Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Steen Larsen
- Xlab, Center for Healthy Aging, Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark.,Clinical Research Centre, Medical University of Bialystok, Bialystok, Poland
| | - Josef Brandauer
- Department of Health Sciences, Gettysburg College, Gettysburg, Pennsylvania
| | - Joseph A Houmard
- Department of Kinesiology, Human Performance Laboratory, East Carolina University, Greenville, North Carolina.,East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, North Carolina
| | - Jonas T Treebak
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Lynn H, Sun X, Casanova N, Gonzales-Garay M, Bime C, Garcia JGN. Genomic and Genetic Approaches to Deciphering Acute Respiratory Distress Syndrome Risk and Mortality. Antioxid Redox Signal 2019; 31:1027-1052. [PMID: 31016989 PMCID: PMC6939590 DOI: 10.1089/ars.2018.7701] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [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: 02/06/2023]
Abstract
Significance: Acute respiratory distress syndrome (ARDS) is a severe, highly heterogeneous critical illness with staggering mortality that is influenced by environmental factors, such as mechanical ventilation, and genetic factors. Significant unmet needs in ARDS are addressing the paucity of validated predictive biomarkers for ARDS risk and susceptibility that hamper the conduct of successful clinical trials in ARDS and the complete absence of novel disease-modifying therapeutic strategies. Recent Advances: The current ARDS definition relies on clinical characteristics that fail to capture the diversity of disease pathology, severity, and mortality risk. We undertook a comprehensive survey of the available ARDS literature to identify genes and genetic variants (candidate gene and limited genome-wide association study approaches) implicated in susceptibility to developing ARDS in hopes of uncovering novel biomarkers for ARDS risk and mortality and potentially novel therapeutic targets in ARDS. We further attempted to address the well-known health disparities that exist in susceptibility to and mortality from ARDS. Critical Issues: Bioinformatic analyses identified 201 ARDS candidate genes with pathway analysis indicating a strong predominance in key evolutionarily conserved inflammatory pathways, including reactive oxygen species, innate immunity-related inflammation, and endothelial vascular signaling pathways. Future Directions: Future studies employing a system biology approach that combines clinical characteristics, genomics, transcriptomics, and proteomics may allow for a better definition of biologically relevant pathways and genotype-phenotype connections and result in improved strategies for the sub-phenotyping of diverse ARDS patients via molecular signatures. These efforts should facilitate the potential for successful clinical trials in ARDS and yield a better fundamental understanding of ARDS pathobiology.
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Affiliation(s)
- Heather Lynn
- Department of Physiological Sciences and University of Arizona, Tucson, Arizona.,Department of Health Sciences, University of Arizona, Tucson, Arizona
| | - Xiaoguang Sun
- Department of Health Sciences, University of Arizona, Tucson, Arizona
| | - Nancy Casanova
- Department of Health Sciences, University of Arizona, Tucson, Arizona
| | | | - Christian Bime
- Department of Health Sciences, University of Arizona, Tucson, Arizona
| | - Joe G N Garcia
- Department of Health Sciences, University of Arizona, Tucson, Arizona
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Ghorbanhosseini SS, Nourbakhsh M, Zangooei M, Abdolvahabi Z, Bolandghamtpour Z, Hesari Z, Yousefi Z, Panahi G, Meshkani R. MicroRNA-494 induces breast cancer cell apoptosis and reduces cell viability by inhibition of nicotinamide phosphoribosyltransferase expression and activity. EXCLI J 2019; 18:838-851. [PMID: 31645844 PMCID: PMC6806255 DOI: 10.17179/excli2018-1748] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 08/22/2019] [Indexed: 01/22/2023]
Abstract
Breast cancer (BC) is the most prevalent cause of cancer-related death in women worldwide. BC is frequently associated with elevated levels of nicotinamide phosphoribosyltransferase (NAMPT) in blood and tumor tissue. MicroRNA-494 (miR-494) has been described to play key anti-tumor roles in human cancers. The aim of the present study was to investigate the inhibitory effect of miR-494 on NAMPT-mediated viability of BC cells. In this experimental study, MCF-7 and MDA-MB-231 cells were cultured and then transfected with miR-494 mimic, miR-494 inhibitor and their negative controls. The mRNA and protein expression of NAMPT were assessed using real-time PCR and Western blotting, respectively. Subsequently, intracellular NAD levels were determined by a colorimetric method. Finally, cell apoptosis was examined by flow cytometry. Bioinformatics evaluations predicted NAMPT as a miR-494 target gene which was confirmed by luciferase reporter assay. Our results showed an inverse relationship between the expression of miR-494 and NAMPT in both MCF-7 and MDA-MB-231 cell lines. miR-494 significantly down-regulated NAMPT mRNA and protein expression and was also able to reduce the cellular NAD content. Cell viability was decreased following miR-494 up-regulation. In addition, apoptosis was induced in MCF-7 and MDA-MB-231 cells by miR-494 mimic. Our findings indicate that miR-494 acts as a tumor suppressor and has an important effect in suppressing the growth of BC cells through NAMPT. Therefore, miR-494 might be considered as a novel therapeutic target for the management of human breast cancer.
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Affiliation(s)
| | - Mitra Nourbakhsh
- Department of Biochemistry, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Zangooei
- Department of Biochemistry, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Zohreh Abdolvahabi
- Department of Biochemistry and Genetics, Cellular and Molecular Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Zahra Bolandghamtpour
- Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, IUMS, Tehran, Iran
| | - Zahra Hesari
- Laboratory Sciences Research Center, Golestan University of Medical Sciences, Gorgan, Iran.,Department of Laboratory Sciences, Faculty of Paramedicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Zeynab Yousefi
- Department of Biochemistry, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Ghodratollah Panahi
- Department of Biochemistry, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Meshkani
- Department of Biochemistry, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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Murdaca G, Tonacci A, Negrini S, Greco M, Borro M, Puppo F, Gangemi S. Effects of AntagomiRs on Different Lung Diseases in Human, Cellular, and Animal Models. Int J Mol Sci 2019; 20:ijms20163938. [PMID: 31412612 PMCID: PMC6719072 DOI: 10.3390/ijms20163938] [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] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 07/14/2019] [Accepted: 07/30/2019] [Indexed: 12/22/2022] Open
Abstract
INTRODUCTION MiRNAs have been shown to play a crucial role among lung cancer, pulmonary fibrosis, tuberculosis (TBC) infection, and bronchial hypersensitivity, thus including chronic obstructive pulmonary disease (COPD) and asthma. The oncogenic effect of several miRNAs has been recently ruled out. In order to act on miRNAs turnover, antagomiRs have been developed. MATERIALS AND METHODS The systematic review was conducted under the PRISMA guidelines (registration number is: CRD42019134173). The PubMed database was searched between 1 January 2000 and 30 April 2019 under the following search strategy: (((antagomiR) OR (mirna antagonists) OR (mirna antagonist)) AND ((lung[MeSH Terms]) OR ("lung diseases"[MeSH Terms]))). We included original articles, published in English, whereas exclusion criteria included reviews, meta-analyses, single case reports, and studies published in a language other than English. RESULTS AND CONCLUSIONS A total of 68 articles matching the inclusion criteria were retrieved. Overall, the use of antagomiR was seen to be efficient in downregulating the specific miRNA they are conceived for. The usefulness of antagomiRs was demonstrated in humans, animal models, and cell lines. To our best knowledge, this is the first article to encompass evidence regarding miRNAs and their respective antagomiRs in the lung, in order to provide readers a comprehensive review upon major lung disorders.
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Affiliation(s)
- Giuseppe Murdaca
- Clinical Immunology Unit, Department of Internal Medicine, University of Genoa and Ospedale Policlinico San Martino, 16132 Genoa, Italy.
| | - Alessandro Tonacci
- Clinical Physiology Institute, National Research Council of Italy (IFC-CNR), 56124 Pisa, Italy
| | - Simone Negrini
- Clinical Immunology Unit, Department of Internal Medicine, University of Genoa and Ospedale Policlinico San Martino, 16132 Genoa, Italy
| | - Monica Greco
- Clinical Immunology Unit, Department of Internal Medicine, University of Genoa and Ospedale Policlinico San Martino, 16132 Genoa, Italy
| | - Matteo Borro
- Clinical Immunology Unit, Department of Internal Medicine, University of Genoa and Ospedale Policlinico San Martino, 16132 Genoa, Italy
| | - Francesco Puppo
- Clinical Immunology Unit, Department of Internal Medicine, University of Genoa and Ospedale Policlinico San Martino, 16132 Genoa, Italy
| | - Sebastiano Gangemi
- School and Operative Unit of Allergy and Clinical Immunology, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy
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Li XQ, Lei J, Mao LH, Wang QL, Xu F, Ran T, Zhou ZH, He S. NAMPT and NAPRT, Key Enzymes in NAD Salvage Synthesis Pathway, Are of Negative Prognostic Value in Colorectal Cancer. Front Oncol 2019; 9:736. [PMID: 31448236 PMCID: PMC6691178 DOI: 10.3389/fonc.2019.00736] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [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: 05/07/2019] [Accepted: 07/22/2019] [Indexed: 12/28/2022] Open
Abstract
Nicotinamide adenine dinucleotide (NAD) is a profoundly important cofactor in redox reactions. Nicotinamide phosphoribosyltransferase (NAMPT) and nicotinate phosphoribosyltransferase (NAPRT) are key enzymes for NAD salvage biosynthesis pathway, which reciprocally synthesize NAD to supply the main source of NAD biosythesis. However, the prognostic value of NAMPT and NAPRT in colorectal cancer (CRC) remains largely unknown. Our present study detected NAMPT and NAPRT protein expression in cancer and adjacent tissues from 261 CRC using immunohistochemical staining. We found that high expression of NAMPT or NAPRT was associated with vascular invasion, invasion depth and advanced TNM stage in CRC. High expression of NAMPT or NAPRT predicts short overall survival and disease-free survival time in CRC patients, which were further confirmed by public datasets. Furthermore, positive correlation between expression of NAMPT and NAPRT was revealed in CRC tissues and cell lines. NAPRThigh/NAMPThigh patients tended to have the shortest survival time. Using the TCGA RNA-sequencing data, we showed that gene amplification, mutation, and methylation of NAPRT are more common than NAMPT. On the other hand, NAMPT gene might be targeted by more miRNAs. Finally, genes that are correlated with NAPRT or NAMPT are enriched in different pathways. In conclusion, we found that high expression of NAMPT or NAPRT predicts poor prognosis of CRC patients, but the regulatory mechanism might be distinct from each other.
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Affiliation(s)
- Xiao-Qin Li
- Department of Gastroenterology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jing Lei
- Department of Gastroenterology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Lin-Hong Mao
- Department of Gastroenterology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qing-Liang Wang
- Department of Pathology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Feng Xu
- Department of Gastroenterology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Tao Ran
- Department of Gastroenterology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhi-Hang Zhou
- Department of Gastroenterology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Song He
- Department of Gastroenterology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Oita RC, Camp SM, Ma W, Ceco E, Harbeck M, Singleton P, Messana J, Sun X, Wang T, Garcia JGN. Novel Mechanism for Nicotinamide Phosphoribosyltransferase Inhibition of TNF-α-mediated Apoptosis in Human Lung Endothelial Cells. Am J Respir Cell Mol Biol 2019; 59:36-44. [PMID: 29337590 DOI: 10.1165/rcmb.2017-0155oc] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Nicotinamide phosphoribosyltransferase (NAMPT) exists as both intracellular NAMPT and extracellular NAMPT (eNAMPT) proteins. eNAMPT is secreted into the blood and functions as a cytokine/enzyme (cytozyme) that activates NF-κB signaling via ligation of Toll-like receptor 4 (TLR4), further serving as a biomarker for inflammatory lung disorders such as acute respiratory distress syndrome. In contrast, intracellular NAMPT is involved in nicotinamide mononucleotide synthesis and has been implicated in the regulation of cellular apoptosis, although the exact mechanisms for this regulation are poorly understood. We examined the role of NAMPT in TNF-α-induced human lung endothelial cell (EC) apoptosis and demonstrated that reduced NAMPT expression (siRNA) increases EC susceptibility to TNF-α-induced apoptosis as reflected by PARP-1 cleavage and caspase-3 activation. In contrast, overexpression of NAMPT served to reduce degrees of TNF-α-induced EC apoptosis. Inhibition of nicotinamide mononucleotide synthesis by FK866 (a selective NAMPT enzymatic inhibitor) failed to alter TNF-α-induced human lung EC apoptosis, suggesting that NAMPT-dependent NAD+ generation is unlikely to be involved in regulation of TNF-α-induced EC apoptosis. We next confirmed that TNF-α-induced EC apoptosis is attributable to NAMPT secretion into the EC culture media and subsequent eNAMPT ligation of TLR4 on the EC membrane surface. Silencing of NAMPT expression, direct neutralization of secreted eNAMPT by an NAMPT-specific polyclonal antibody (preventing TLR4 ligation), or direct TLR4 antagonism all served to significantly increase EC susceptibility to TNF-α-induced EC apoptosis. Together, these studies provide novel insights into NAMPT contributions to lung inflammatory events and to novel mechanisms of EC apoptosis regulation.
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Affiliation(s)
- Radu C Oita
- 1 Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Arizona Health Sciences, University of Arizona, Tucson, Arizona
| | - Sara M Camp
- 1 Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Arizona Health Sciences, University of Arizona, Tucson, Arizona
| | - Wenli Ma
- 1 Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Arizona Health Sciences, University of Arizona, Tucson, Arizona
| | - Ermelinda Ceco
- 2 Institute for Personalized Respiratory Medicine, University of Illinois at Chicago, Chicago, Illinois; and
| | - Mark Harbeck
- 2 Institute for Personalized Respiratory Medicine, University of Illinois at Chicago, Chicago, Illinois; and
| | | | - Joe Messana
- 1 Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Arizona Health Sciences, University of Arizona, Tucson, Arizona
| | - Xiaoguang Sun
- 1 Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Arizona Health Sciences, University of Arizona, Tucson, Arizona
| | - Ting Wang
- 1 Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Arizona Health Sciences, University of Arizona, Tucson, Arizona
| | - Joe G N Garcia
- 1 Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Arizona Health Sciences, University of Arizona, Tucson, Arizona
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Manning P, Munasinghe PE, Bellae Papannarao J, Gray AR, Sutherland W, Katare R. Acute Weight Loss Restores Dysregulated Circulating MicroRNAs in Individuals Who Are Obese. J Clin Endocrinol Metab 2019; 104:1239-1248. [PMID: 30383229 DOI: 10.1210/jc.2018-00684] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 10/26/2018] [Indexed: 12/17/2022]
Abstract
CONTEXT Obesity is a global epidemic and an independent risk factor for several diseases. miRNAs are gaining interest as early molecular regulators of various pathological processes. OBJECTIVE To examine the miRNA signatures in women who are obese and determine the response of miRNAs to acute weight loss. METHODS Plasma samples were collected from women who are obese (n = 80) before and after acute weight loss (mean, 7.2%). Plasma samples from age-matched lean volunteers (n = 80) were used as controls. Total RNA was extracted from the plasma samples and subjected to NanoString analysis of 822 miRNAs. The expression level of candidate miRNAs was validated in all participants using quantitative real-time PCR analysis. RESULTS NanoString analysis identified substantial dysregulation of 21 miRNAs in women who are obese that were associated with impaired glucose tolerance, senescence, cardiac hypertrophy, angiogenesis, inflammation, and cell death. Acute weight loss reversed the expression pattern of 18 of these miRNAs toward those seen in the lean control group. Furthermore, real-time PCR validation of all the samples for 13 miRNAs with at least twofold upregulation or downregulation confirmed substantial dysregulation of all the chosen miRNAs in women who are obese at baseline. After acute weight loss, the levels of seven miRNAs in women who are obese and who are lean were comparable, with no statistically significant evidence for differences between the two groups. CONCLUSIONS Our study has provided evidence that the circulating miRNAs associated with various disorders are dysregulated in women who are obese. We also found that seven of these miRNAs showed levels comparable to those in lean controls after acute weight loss in women who are obese.
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Affiliation(s)
- Patrick Manning
- Department of Medicine, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand
| | - Pujika Emani Munasinghe
- Department of Physiology, HeartOtago, School of Biomedical Science, University of Otago, Dunedin, New Zealand
| | - Jayanthi Bellae Papannarao
- Department of Physiology, HeartOtago, School of Biomedical Science, University of Otago, Dunedin, New Zealand
| | - Andrew R Gray
- Biostatistics Unit, Dunedin School of Medicine, Health Sciences, University of Otago, Dunedin, New Zealand
| | - Wayne Sutherland
- Department of Medicine, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand
| | - Rajesh Katare
- Department of Physiology, HeartOtago, School of Biomedical Science, University of Otago, Dunedin, New Zealand
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Abstract
Vascular endothelial cells (ECs) form a semiselective barrier for macromolecules and cell elements regulated by dynamic interactions between cytoskeletal elements and cell adhesion complexes. ECs also participate in many other vital processes including innate immune reactions, vascular repair, secretion, and metabolism of bioactive molecules. Moreover, vascular ECs represent a unique cell type exposed to continuous, time-dependent mechanical forces: different patterns of shear stress imposed by blood flow in macrovasculature and by rolling blood cells in the microvasculature; circumferential cyclic stretch experienced by the arterial vascular bed caused by heart propulsions; mechanical stretch of lung microvascular endothelium at different magnitudes due to spontaneous respiration or mechanical ventilation in critically ill patients. Accumulating evidence suggests that vascular ECs contain mechanosensory complexes, which rapidly react to changes in mechanical loading, process the signal, and develop context-specific adaptive responses to rebalance the cell homeostatic state. The significance of the interactions between specific mechanical forces in the EC microenvironment together with circulating bioactive molecules in the progression and resolution of vascular pathologies including vascular injury, atherosclerosis, pulmonary edema, and acute respiratory distress syndrome has been only recently recognized. This review will summarize the current understanding of EC mechanosensory mechanisms, modulation of EC responses to humoral factors by surrounding mechanical forces (particularly the cyclic stretch), and discuss recent findings of magnitude-specific regulation of EC functions by transcriptional, posttranscriptional and epigenetic mechanisms using -omics approaches. We also discuss ongoing challenges and future opportunities in developing new therapies targeting dysregulated mechanosensing mechanisms to treat vascular diseases. © 2019 American Physiological Society. Compr Physiol 9:873-904, 2019.
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Affiliation(s)
- Yun Fang
- Department of Medicine, University of Chicago, Chicago, Illinois, USA,Correspondence to
| | - David Wu
- Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - Konstantin G. Birukov
- Department of Anesthesiology, University of Maryland Baltimore School of Medicine, Baltimore, Maryland, USA
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31
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Fang M, Fan S, Yao X, Liu N, Gao J, Wang Z, Xu T, Xian X, Li W. Transfection of Sox11 plasmid alleviates ventilator-induced lung injury via Sox11 and FAK. Biochem Biophys Res Commun 2019; 512:182-188. [PMID: 30879763 DOI: 10.1016/j.bbrc.2019.03.041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 03/08/2019] [Indexed: 12/15/2022]
Abstract
Background Ventilator-induced lung injury (VILI) is the most common complication in the mechanical ventilation in clinic. The pathogenesis of VILI has not been well understood. The SRY related High Mobility Group box group-F family member 11(Sox11) is a protein associated with lung development. The focal adhesion kinase(FAK) is a cytoplasmic tyrosine kinase and is regulated by Sox11. The present study, therefore, was undertaken to explore the potential role of Sox11 and FAK in VILI. Methods High volume mechanical ventilation(HMV) was used to establish mouse VILI model under anesthesia. The lung injury was evaluated by analyzing the lung weight, bronchoalveolar lavage fluid, histopathological changes and apoptosis of the lung. The Sox11 and FAK expressions in the lung were investigated by real-time qPCR, western blot and immunohistochemistry analysis. Results HMV induced VILI simultaneously companied with decreased expressions of Sox11 and FAK in alveolar epithelial and interstitial cells either in gene and protein levels. Transfection of Sox11 plasmid significantly upregulated expressions of Sox11 and FAK in gene and protein levels in the lung and particularly effectively alleviated VILI. Furthermore, FAK antagonism by PF562271(FAK antagonist) blocked the alleviating effect of Sox11 plasmid transfection on the VILI. Conclusion The dysregulation in the Sox11 and FAK after HMV play an important role in the pathogenesis of VILI, and facilitating the activity of Sox11and FAK might be an effective target and potential option in the prevention and treatment of VILI in clinic.
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Affiliation(s)
- Mingxing Fang
- Department of Pathophysiology, Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China; Department of Intensive Care Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Shujuan Fan
- Department of Pathophysiology, Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China
| | - Xiaoguang Yao
- Department of Pathophysiology, Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China; College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Na Liu
- Department of Emergency, The Forth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Junxia Gao
- Department of Pathophysiology, Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China
| | - Zhiyong Wang
- Department of Intensive Care Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang, China.
| | - Tieling Xu
- Department of Emergency, Hebei General Hospital, Shijiazhuang, China
| | - Xiaohui Xian
- Department of Pathophysiology, Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China
| | - Wenbin Li
- Department of Pathophysiology, Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China.
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Abstract
Cancer cells have a unique energy metabolism for sustaining rapid proliferation. The preference for anaerobic glycolysis under normal oxygen conditions is a unique trait of cancer metabolism and is designated as the Warburg effect. Enhanced glycolysis also supports the generation of nucleotides, amino acids, lipids, and folic acid as the building blocks for cancer cell division. Nicotinamide adenine dinucleotide (NAD) is a co-enzyme that mediates redox reactions in a number of metabolic pathways, including glycolysis. Increased NAD levels enhance glycolysis and fuel cancer cells. In fact, nicotinamide phosphoribosyltransferase (Nampt), a rate-limiting enzyme for NAD synthesis in mammalian cells, is frequently amplified in several cancer cells. In addition, Nampt-specific inhibitors significantly deplete NAD levels and subsequently suppress cancer cell proliferation through inhibition of energy production pathways, such as glycolysis, tricarboxylic acid (TCA) cycle, and oxidative phosphorylation. NAD also serves as a substrate for poly(ADP-ribose) polymerase (PARP), sirtuin, and NAD gylycohydrolase (CD38 and CD157); thus, NAD regulates DNA repair, gene expression, and stress response through these enzymes. Thus, NAD metabolism is implicated in cancer pathogenesis beyond energy metabolism and considered a promising therapeutic target for cancer treatment. In this review, we present recent findings with respect to NAD metabolism and cancer pathogenesis. We also discuss the current and future perspectives regarding the therapeutics that target NAD metabolic pathways.
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Affiliation(s)
- Keisuke Yaku
- Department of Metabolism and Nutrition, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, Toyama, Japan
| | - Keisuke Okabe
- Department of Metabolism and Nutrition, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, Toyama, Japan.,First Department of Internal Medicine, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, Toyama, Japan
| | - Keisuke Hikosaka
- Department of Metabolism and Nutrition, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, Toyama, Japan
| | - Takashi Nakagawa
- Department of Metabolism and Nutrition, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, Toyama, Japan.,Institute of Natural Medicine, University of Toyama, Toyama, Japan
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Yaku K, Okabe K, Nakagawa T. NAD metabolism: Implications in aging and longevity. Ageing Res Rev 2018; 47:1-17. [PMID: 29883761 DOI: 10.1016/j.arr.2018.05.006] [Citation(s) in RCA: 158] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 05/31/2018] [Accepted: 05/31/2018] [Indexed: 12/20/2022]
Abstract
Nicotinamide adenine dinucleotide (NAD) is an important co-factor involved in numerous physiological processes, including metabolism, post-translational protein modification, and DNA repair. In living organisms, a careful balance between NAD production and degradation serves to regulate NAD levels. Recently, a number of studies have demonstrated that NAD levels decrease with age, and the deterioration of NAD metabolism promotes several aging-associated diseases, including metabolic and neurodegenerative diseases and various cancers. Conversely, the upregulation of NAD metabolism, including dietary supplementation with NAD precursors, has been shown to prevent the decline of NAD and exhibits beneficial effects against aging and aging-associated diseases. In addition, many studies have demonstrated that genetic and/or nutritional activation of NAD metabolism can extend the lifespan of diverse organisms. Collectively, it is clear that NAD metabolism plays important roles in aging and longevity. In this review, we summarize the basic functions of the enzymes involved in NAD synthesis and degradation, as well as the outcomes of their dysregulation in various aging processes. In addition, a particular focus is given on the role of NAD metabolism in the longevity of various organisms, with a discussion of the remaining obstacles in this research field.
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34
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Hesari Z, Nourbakhsh M, Hosseinkhani S, Abdolvahabi Z, Alipour M, Tavakoli-Yaraki M, Ghorbanhosseini SS, Yousefi Z, Jafarzadeh M, Yarahmadi S. Down-regulation of NAMPT expression by mir-206 reduces cell survival of breast cancer cells. Gene 2018; 673:149-158. [PMID: 29886033 DOI: 10.1016/j.gene.2018.06.021] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Revised: 06/05/2018] [Accepted: 06/07/2018] [Indexed: 01/10/2023]
Abstract
Nicotinamide adenine dinucleotide (NAD) is a critical coenzyme for all living cells. Nicotinamide phosphoribosyltransferase (NAMPT) functions as a key enzyme in the salvage pathway of NAD biosynthesis. Cancer cells have higher rate of NAD consumption and therefore NAMPT is essential for their survival. Thus, we investigated the effect of NAMPT inhibition by miR-206 on breast cancer cell survival. Breast cancer cells were transfected with miR-206 mimic, inhibitor and their negative controls. NAMPT levels were assessed by real-time PCR as well as western blotting. Cell survival assay and quantification of NAD level were performed by using colorimetric methods. Apoptosis assay was performed by labeling cells with Annexin V-FITC and propidium iodide followed by the flow cytometric analysis. Bioinformatics analysis was done to assess whether NAMPT 3'-UTR is a direct target of miR-206 and the results were confirmed by the luciferase reporter assay. NAMPT 3'-UTR was shown to be a direct target of miR-206. miR-206 reduced NAMPT expression at the protein level, leading to a significant decrease in the intracellular NAD level and subsequent decline in cell survival and induction of apoptosis. Targeting of NAMPT-mediated NAD salvage pathway by miR-206 might provide a new insight in the possible molecular mechanism of breast cancer cell growth regulation. This pathway might provide a new approach for breast cancer therapy.
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Affiliation(s)
- Zahra Hesari
- Department of Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mitra Nourbakhsh
- Department of Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
| | - Saman Hosseinkhani
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Zohreh Abdolvahabi
- Department of Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mohsen Alipour
- Department of Nano biotechnology, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran; Department of Advanced Medical Sciences & Technologies, School of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran; Research Center for Noncommunicable Diseases, School of Medicine, Jahrom University of Medical Sciences (JUMS), Jahrom, Iran
| | - Masoumeh Tavakoli-Yaraki
- Department of Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | | | - Zeynab Yousefi
- Department of Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Meisam Jafarzadeh
- Department of Molecular Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Sahar Yarahmadi
- Department of Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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Suryadevara V, Fu P, Ebenezer DL, Berdyshev E, Bronova IA, Huang LS, Harijith A, Natarajan V. Sphingolipids in Ventilator Induced Lung Injury: Role of Sphingosine-1-Phosphate Lyase. Int J Mol Sci 2018; 19:E114. [PMID: 29301259 PMCID: PMC5796063 DOI: 10.3390/ijms19010114] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [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: 11/15/2017] [Revised: 12/21/2017] [Accepted: 12/27/2017] [Indexed: 12/14/2022] Open
Abstract
Mechanical ventilation (MV) performed in respiratory failure patients to maintain lung function leads to ventilator-induced lung injury (VILI). This study investigates the role of sphingolipids and sphingolipid metabolizing enzymes in VILI using a rodent model of VILI and alveolar epithelial cells subjected to cyclic stretch (CS). MV (0 PEEP (Positive End Expiratory Pressure), 30 mL/kg, 4 h) in mice enhanced sphingosine-1-phosphate lyase (S1PL) expression, and ceramide levels, and decreased S1P levels in lung tissue, thereby leading to lung inflammation, injury and apoptosis. Accumulation of S1P in cells is a balance between its synthesis catalyzed by sphingosine kinase (SphK) 1 and 2 and catabolism mediated by S1P phosphatases and S1PL. Thus, the role of S1PL and SphK1 in VILI was investigated using Sgpl1+/- and Sphk1-/- mice. Partial genetic deletion of Sgpl1 protected mice against VILI, whereas deletion of SphK1 accentuated VILI in mice. Alveolar epithelial MLE-12 cells subjected to pathophysiological 18% cyclic stretch (CS) exhibited increased S1PL protein expression and dysregulation of sphingoid bases levels as compared to physiological 5% CS. Pre-treatment of MLE-12 cells with S1PL inhibitor, 4-deoxypyridoxine, attenuated 18% CS-induced barrier dysfunction, minimized cell apoptosis and cytokine secretion. These results suggest that inhibition of S1PL that increases S1P levels may offer protection against VILI.
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Affiliation(s)
- Vidyani Suryadevara
- Department of Bioengineering, University of Illinois at Chicago (UIC), Chicago, IL 60607, USA.
| | - Panfeng Fu
- Department of Pharmacology, University of Illinois at Chicago (UIC), Chicago, IL 60612, USA.
| | - David Lenin Ebenezer
- Department of Pharmacology, University of Illinois at Chicago (UIC), Chicago, IL 60612, USA.
| | - Evgeny Berdyshev
- Department of Pharmacology, Department of Medicine, National Jewish Health Center, Denver, CO 80206, USA.
| | - Irina A Bronova
- Department of Pharmacology, Department of Medicine, National Jewish Health Center, Denver, CO 80206, USA.
| | - Long Shuang Huang
- Department of Pharmacology, University of Illinois at Chicago (UIC), Chicago, IL 60612, USA.
| | - Anantha Harijith
- Department of Pediatrics, University of Illinois at Chicago (UIC), Chicago, IL 60612, USA.
| | - Viswanathan Natarajan
- Department of Pharmacology, University of Illinois at Chicago (UIC), Chicago, IL 60612, USA.
- Department of Medicine, University of Illinois at Chicago (UIC), Chicago, IL 60612, USA.
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Syed M, Das P, Pawar A, Aghai ZH, Kaskinen A, Zhuang ZW, Ambalavanan N, Pryhuber G, Andersson S, Bhandari V. Hyperoxia causes miR-34a-mediated injury via angiopoietin-1 in neonatal lungs. Nat Commun 2017; 8:1173. [PMID: 29079808 DOI: 10.1038/s41467-017-01349-y] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 09/11/2017] [Indexed: 01/07/2023] Open
Abstract
Hyperoxia-induced acute lung injury (HALI) is a key contributor to the pathogenesis of bronchopulmonary dysplasia (BPD) in neonates, for which no specific preventive or therapeutic agent is available. Here we show that lung micro-RNA (miR)-34a levels are significantly increased in lungs of neonatal mice exposed to hyperoxia. Deletion or inhibition of miR-34a improves the pulmonary phenotype and BPD-associated pulmonary arterial hypertension (PAH) in BPD mouse models, which, conversely, is worsened by miR-34a overexpression. Administration of angiopoietin-1, which is one of the downstream targets of miR34a, is able to ameliorate the BPD pulmonary and PAH phenotypes. Using three independent cohorts of human samples, we show that miR-34a expression is increased in type 2 alveolar epithelial cells in neonates with respiratory distress syndrome and BPD. Our data suggest that pharmacologic miR-34a inhibition may be a therapeutic option to prevent or ameliorate HALI/BPD in neonates.
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37
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Chen J, Sysol JR, Singla S, Zhao S, Yamamura A, Valdez-Jasso D, Abbasi T, Shioura KM, Sahni S, Reddy V, Sridhar A, Gao H, Torres J, Camp SM, Tang H, Ye SQ, Comhair S, Dweik R, Hassoun P, Yuan JXJ, Garcia JGN, Machado RF. Nicotinamide Phosphoribosyltransferase Promotes Pulmonary Vascular Remodeling and Is a Therapeutic Target in Pulmonary Arterial Hypertension. Circulation 2017; 135:1532-1546. [PMID: 28202489 DOI: 10.1161/circulationaha.116.024557] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [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: 07/18/2016] [Accepted: 02/06/2017] [Indexed: 11/16/2022]
Abstract
BACKGROUND Pulmonary arterial hypertension is a severe and progressive disease, a hallmark of which is pulmonary vascular remodeling. Nicotinamide phosphoribosyltransferase (NAMPT) is a cytozyme that regulates intracellular nicotinamide adenine dinucleotide levels and cellular redox state, regulates histone deacetylases, promotes cell proliferation, and inhibits apoptosis. We hypothesized that NAMPT promotes pulmonary vascular remodeling and that inhibition of NAMPT could attenuate pulmonary hypertension. METHODS Plasma, mRNA, and protein levels of NAMPT were measured in the lungs and isolated pulmonary artery endothelial cells from patients with pulmonary arterial hypertension and in the lungs of rodent models of pulmonary hypertension. Nampt+/- mice were exposed to 10% hypoxia and room air for 4 weeks, and the preventive and therapeutic effects of NAMPT inhibition were tested in the monocrotaline and Sugen hypoxia models of pulmonary hypertension. The effects of NAMPT activity on proliferation, migration, apoptosis, and calcium signaling were tested in human pulmonary artery smooth muscle cells. RESULTS Plasma and mRNA and protein levels of NAMPT were increased in the lungs and isolated pulmonary artery endothelial cells from patients with pulmonary arterial hypertension, as well as in lungs of rodent models of pulmonary hypertension. Nampt+/- mice were protected from hypoxia-mediated pulmonary hypertension. NAMPT activity promoted human pulmonary artery smooth muscle cell proliferation via a paracrine effect. In addition, recombinant NAMPT stimulated human pulmonary artery smooth muscle cell proliferation via enhancement of store-operated calcium entry by enhancing expression of Orai2 and STIM2. Last, inhibition of NAMPT activity attenuated monocrotaline and Sugen hypoxia-induced pulmonary hypertension in rats. CONCLUSIONS Our data provide evidence that NAMPT plays a role in pulmonary vascular remodeling and that its inhibition could be a potential therapeutic target for pulmonary arterial hypertension.
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Affiliation(s)
- Jiwang Chen
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Justin R Sysol
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Sunit Singla
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Shuangping Zhao
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Aya Yamamura
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Daniela Valdez-Jasso
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Taimur Abbasi
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Krystyna M Shioura
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Sakshi Sahni
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Vamsi Reddy
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Arvind Sridhar
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Hui Gao
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Jaime Torres
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Sara M Camp
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Haiyang Tang
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Shui Q Ye
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Suzy Comhair
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Raed Dweik
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Paul Hassoun
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Jason X-J Yuan
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Joe G N Garcia
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.).
| | - Roberto F Machado
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.).
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Szilágyi KL, Liu C, Zhang X, Wang T, Fortman JD, Zhang W, Garcia JGN. Epigenetic contribution of the myosin light chain kinase gene to the risk for acute respiratory distress syndrome. Transl Res 2017; 180:12-21. [PMID: 27543902 PMCID: PMC5253100 DOI: 10.1016/j.trsl.2016.07.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 07/20/2016] [Accepted: 07/23/2016] [Indexed: 12/12/2022]
Abstract
Acute respiratory distress syndrome (ARDS) is a devastating clinical syndrome with a considerable case fatality rate (∼30%-40%). Health disparities exist with African descent (AD) subjects exhibiting greater mortality than European descent (ED) individuals. Myosin light chain kinase is encoded by MYLK, whose genetic variants are implicated in ARDS pathogenesis and may influence ARDS mortality. As baseline population-specific epigenetic changes, that is, cytosine modifications, have been observed between AD and ED individuals, epigenetic variations in MYLK may provide insights into ARDS disparities. We compared methylation levels of MYLK cytosine-guanine dinucleotides (CpGs) between ARDS patients and intensive care unit (ICU) controls overall and by ethnicity in a nested case-control study of 39 ARDS cases and 75 non-ARDS ICU controls. Two MYLK CpG sites (cg03892735 and cg23344121) were differentially modified between ARDS subjects and controls (P < 0.05; q < 0.25) in a logistic regression model, where no effect modification by ethnicity or age was found. One CpG site was associated with ARDS in patients aged <58 years, cg19611163 (intron 19, 20). Two CpG sites were associated with ARDS in EDs only, gene body CpG (cg01894985, intron 2, 3) and CpG (cg16212219, intron 31, 32), with higher modification levels exhibited in ARDS subjects than controls. Cis-acting modified cytosine quantitative trait loci (mQTL) were identified using linear regression between local genetic variants and modification levels for 2 ARDS-associated CpGs (cg23344121 and cg16212219). In summary, these ARDS-associated MYLK CpGs with effect modification by ethnicity and local mQTL suggest that MYLK epigenetic variation and local genetic background may contribute to health disparities observed in ARDS.
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Affiliation(s)
- Keely L Szilágyi
- Laboratory Animal Resource Center, Indiana University School of Medicine, Indianapolis, Ind
| | - Cong Liu
- Department of Bioengineering, University of Illinois at Chicago, Chicago, Ill
| | - Xu Zhang
- Department of Medicine, University of Illinois at Chicago, Chicago, Ill
| | - Ting Wang
- University of Arizona Health Sciences, University of Arizona, Tucson, Ariz
| | - Jeffrey D Fortman
- Biological Resources Laboratory, University of Illinois at Chicago, Chicago, Ill
| | - Wei Zhang
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Ill.
| | - Joe G N Garcia
- University of Arizona Health Sciences, University of Arizona, Tucson, Ariz
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Elangovan VR, Camp SM, Kelly GT, Desai AA, Adyshev D, Sun X, Black SM, Wang T, Garcia JGN. Endotoxin- and mechanical stress-induced epigenetic changes in the regulation of the nicotinamide phosphoribosyltransferase promoter. Pulm Circ 2017; 6:539-544. [PMID: 28090296 DOI: 10.1086/688761] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [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: 01/15/2023] Open
Abstract
Mechanical ventilation, a lifesaving intervention for patients with acute respiratory distress syndrome (ARDS), also unfortunately contributes to excessive mechanical stress and impaired lung physiological and structural integrity. We have elsewhere established the pivotal role of increased nicotinamide phosphoribosyltransferase (NAMPT) transcription and secretion as well as its direct binding to the toll-like receptor 4 (TLR4) in the progression of this devastating syndrome; however, regulation of this critical gene in ventilator-induced lung injury (VILI) is not well characterized. On the basis of an emerging role for epigenetics in enrichment of VILI and CpG sites within the NAMPT promoter and 5'UTR, we hypothesized that NAMPT expression and downstream transcriptional events are influenced by epigenetic mechanisms. Concomitantly, excessive mechanical stress of human pulmonary artery endothelial cells or lipopolysaccharide (LPS) treatment led to both reduced DNA methylation levels in the NAMPT promoter and increased gene transcription. Histone deacetylase inhibition by trichostatin A or Sirt-1-silencing RNA attenuates LPS-induced NAMPT expression. Furthermore, recombinant NAMPT administration induced TLR4-dependent global H3K9 hypoacetylation. These studies suggest a complex epigenetic regulatory network of NAMPT in VILI and ARDS and open novel strategies for combating VILI and ARDS.
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Affiliation(s)
- Venkateswaran Ramamoorthi Elangovan
- Department of Medicine, University of Arizona, Tucson, Arizona, USA; Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois, USA; Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Sara M Camp
- Department of Medicine, University of Arizona, Tucson, Arizona, USA
| | - Gabriel T Kelly
- Department of Medicine, University of Arizona, Tucson, Arizona, USA
| | - Ankit A Desai
- Department of Medicine, University of Arizona, Tucson, Arizona, USA
| | - Djanybek Adyshev
- Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Xiaoguang Sun
- Department of Medicine, University of Arizona, Tucson, Arizona, USA
| | - Stephen M Black
- Department of Medicine, University of Arizona, Tucson, Arizona, USA
| | - Ting Wang
- Department of Medicine, University of Arizona, Tucson, Arizona, USA
| | - Joe G N Garcia
- Department of Medicine, University of Arizona, Tucson, Arizona, USA; Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois, USA; Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
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Wang T, Gross C, Desai AA, Zemskov E, Wu X, Garcia AN, Jacobson JR, Yuan JXJ, Garcia JGN, Black SM. Endothelial cell signaling and ventilator-induced lung injury: molecular mechanisms, genomic analyses, and therapeutic targets. Am J Physiol Lung Cell Mol Physiol 2016; 312:L452-L476. [PMID: 27979857 DOI: 10.1152/ajplung.00231.2016] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 12/08/2016] [Accepted: 12/11/2016] [Indexed: 12/13/2022] Open
Abstract
Mechanical ventilation is a life-saving intervention in critically ill patients with respiratory failure due to acute respiratory distress syndrome (ARDS). Paradoxically, mechanical ventilation also creates excessive mechanical stress that directly augments lung injury, a syndrome known as ventilator-induced lung injury (VILI). The pathobiology of VILI and ARDS shares many inflammatory features including increases in lung vascular permeability due to loss of endothelial cell barrier integrity resulting in alveolar flooding. While there have been advances in the understanding of certain elements of VILI and ARDS pathobiology, such as defining the importance of lung inflammatory leukocyte infiltration and highly induced cytokine expression, a deep understanding of the initiating and regulatory pathways involved in these inflammatory responses remains poorly understood. Prevailing evidence indicates that loss of endothelial barrier function plays a primary role in the development of VILI and ARDS. Thus this review will focus on the latest knowledge related to 1) the key role of the endothelium in the pathogenesis of VILI; 2) the transcription factors that relay the effects of excessive mechanical stress in the endothelium; 3) the mechanical stress-induced posttranslational modifications that influence key signaling pathways involved in VILI responses in the endothelium; 4) the genetic and epigenetic regulation of key target genes in the endothelium that are involved in VILI responses; and 5) the need for novel therapeutic strategies for VILI that can preserve endothelial barrier function.
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Affiliation(s)
- Ting Wang
- Department of Medicine, The University of Arizona Health Sciences, Tucson, Arizona
| | - Christine Gross
- Vascular Biology Center, Augusta University, Augusta, Georgia
| | - Ankit A Desai
- Department of Medicine, The University of Arizona Health Sciences, Tucson, Arizona
| | - Evgeny Zemskov
- Department of Medicine, The University of Arizona Health Sciences, Tucson, Arizona
| | - Xiaomin Wu
- Department of Medicine, The University of Arizona Health Sciences, Tucson, Arizona
| | - Alexander N Garcia
- Department of Pharmacology University of Illinois at Chicago, Chicago, Illinois; and
| | - Jeffrey R Jacobson
- Department of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Jason X-J Yuan
- Department of Medicine, The University of Arizona Health Sciences, Tucson, Arizona
| | - Joe G N Garcia
- Department of Medicine, The University of Arizona Health Sciences, Tucson, Arizona
| | - Stephen M Black
- Department of Medicine, The University of Arizona Health Sciences, Tucson, Arizona;
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Camp SM, Ceco E, Evenoski CL, Danilov SM, Zhou T, Chiang ET, Moreno-Vinasco L, Mapes B, Zhao J, Gursoy G, Brown ME, Adyshev DM, Siddiqui SS, Quijada H, Sammani S, Letsiou E, Saadat L, Yousef M, Wang T, Liang J, Garcia JG. Unique Toll-Like Receptor 4 Activation by NAMPT/PBEF Induces NFκB Signaling and Inflammatory Lung Injury. Sci Rep 2015; 5:13135. [PMID: 26272519 DOI: 10.1038/srep13135] [Citation(s) in RCA: 122] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 07/20/2015] [Indexed: 02/07/2023] Open
Abstract
Ventilator-induced inflammatory lung injury (VILI) is mechanistically linked to increased NAMPT transcription and circulating levels of nicotinamide phosphoribosyl-transferase (NAMPT/PBEF). Although VILI severity is attenuated by reduced NAMPT/PBEF bioavailability, the precise contribution of NAMPT/PBEF and excessive mechanical stress to VILI pathobiology is unknown. We now report that NAMPT/PBEF induces lung NFκB transcriptional activities and inflammatory injury via direct ligation of Toll-like receptor 4 (TLR4). Computational analysis demonstrated that NAMPT/PBEF and MD-2, a TLR4-binding protein essential for LPS-induced TLR4 activation, share ~30% sequence identity and exhibit striking structural similarity in loop regions critical for MD-2-TLR4 binding. Unlike MD-2, whose TLR4 binding alone is insufficient to initiate TLR4 signaling, NAMPT/PBEF alone produces robust TLR4 activation, likely via a protruding region of NAMPT/PBEF (S402-N412) with structural similarity to LPS. The identification of this unique mode of TLR4 activation by NAMPT/PBEF advances the understanding of innate immunity responses as well as the untoward events associated with mechanical stress-induced lung inflammation.
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Yang W, Zeng Y, Li B, Zhou J, Gong Y, Xu J, Dong X. Pre-B-cell colony enhancing factor (PBEF) increases endothelial permeability in hypoxia/re-oxygenation model. Int J Clin Exp Med 2015; 8:8842-8847. [PMID: 26309537 PMCID: PMC4537969] [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: 10/26/2014] [Accepted: 06/04/2015] [Indexed: 06/04/2023]
Abstract
OBJECTIVE This study aims to explore the relationship between PBEF and VEGF and p-MLC and the mechanism of PBEF increasing permeability of endothelial cells in hypoxia/re-oxygenation. METHODS Hypoxia/re-oxygenation model was established and PBEF siRNA was synthesized. According to the different HUVEC treatment, it can be divided into normal control group, PBEF siRNA group; hypoxia (20 hours) and re-oxygenation (3 h) group, hypoxia (20 h) and re-oxygenation (6 h) group, hypoxia (20 h) and re-oxygenation (9 hours) group, hypoxia (20 h)/re-oxygenation (12 h). The expressions of PBEF, VEGF and p-MLC were tested by RT-PCR and Western blot. RESULTS The mRNA and protein expression of PBEF in PBEF siRNA group were significantly lower compared to liposome group and the negative controls (P < 0.05). The expression of PBEF protein in hypoxia/re-oxygenation group was significantly higher than the normal control group. It increased in the 3 h of re-oxygenation group, peaked at 9 h, until 12 h started to decline (P < 0.05). When the PBEF gene was knockdown, the expression of VEGF and p-MLC in hypoxia and re-oxygenation are significantly lower. CONCLUSIONS PBEF siRNA can effectively inhibit the expression of PBEF in endothelial cells. The expression of PBEF, VEGF and p-MLC were significantly higher in endothelial cell after Hypoxia/re-oxygenation. PBEF may change the permeability of endothelial cells by regulating the expression of VEGF and the phosphorylation of MLC.
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Affiliation(s)
- Wei Yang
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Nanchang UniversityNanchang 330008, China
| | - Yuan Zeng
- Department of Thoracic Surgery, The First Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 5101203, China
| | - Bin Li
- Department of Heart Surgery, Beijing Anzhen Hospital of Capital Medical UniversityBeijing 100029, China
| | - Jianliang Zhou
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Nanchang UniversityNanchang 330008, China
| | - Yi Gong
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Nanchang UniversityNanchang 330008, China
| | - Jianjun Xu
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Nanchang UniversityNanchang 330008, China
| | - Xiao Dong
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Nanchang UniversityNanchang 330008, China
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Ehnes DD, Price FD, Shrive NG, Hart DA, Rancourt DE, zur Nieden NI. Embryonic stem cell-derived osteocytes are capable of responding to mechanical oscillatory hydrostatic pressure. J Biomech 2015; 48:1915-21. [PMID: 25936968 DOI: 10.1016/j.jbiomech.2015.04.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 04/04/2015] [Accepted: 04/08/2015] [Indexed: 11/28/2022]
Abstract
Osteoblasts can be derived from embryonic stem cells (ESCs) by a 30 day differentiation process, whereupon cells spontaneously differentiate upon removal of LIF and respond to exogenously added 1,25α(OH)2 vitamin D3 with enhanced matrix mineralization. However, bone is a load-bearing tissue that has to perform under dynamic pressure changes during daily movement, a capacity that is executed by osteocytes. At present, it is unclear whether ESC-derived osteogenic cultures contain osteocytes and whether these are capable of responding to a relevant cyclic hydrostatic compression stimulus. Here, we show that ESC-osteoblastogenesis is followed by the generation of osteocytes and then mechanically load ESC-derived osteogenic cultures in a compression chamber using a cyclic loading protocol. Following mechanical loading of the cells, iNOS mRNA was upregulated 31-fold, which was consistent with a role for iNOS as an immediate early mechanoresponsive gene. Further analysis of matrix and bone-specific genes suggested a cellular response in favor of matrix remodeling. Immediate iNOS upregulation also correlated with a concomitant increase in Ctnnb1 and Tcf7l2 mRNAs along with increased nuclear TCF transcriptional activity, while the mRNA for the repressive Tcf7l1 was downregulated, providing a possible mechanistic explanation for the noted matrix remodeling. We conclude that ESC-derived osteocytes are capable of responding to relevant mechanical cues, at least such that mimic oscillatory compression stress, which not only provides new basic understanding, but also information that likely will be important for their use in cell-based regenerative therapies.
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Affiliation(s)
- D D Ehnes
- University of California Riverside, Department of Cell Biology & Neuroscience and Stem Cell Center, College of Natural and Agricultural Sciences, 1113 Biological Sciences Building, Riverside, CA 92521, USA
| | - F D Price
- The Alberta Children's Hospital Research Institute, University of Calgary, Heritage Medical Research Building, 3330 Hospital Drive NW, Calgary, AB, Canada T2N 4N1
| | - N G Shrive
- McCaig Institute for Bone and Joint Health, University of Calgary, Heritage Medical Research Building, 3330 Hospital Drive NW, Calgary, AB, Canada T2N 4N1
| | - D A Hart
- McCaig Institute for Bone and Joint Health, University of Calgary, Heritage Medical Research Building, 3330 Hospital Drive NW, Calgary, AB, Canada T2N 4N1
| | - D E Rancourt
- The Alberta Children's Hospital Research Institute, University of Calgary, Heritage Medical Research Building, 3330 Hospital Drive NW, Calgary, AB, Canada T2N 4N1
| | - N I zur Nieden
- University of California Riverside, Department of Cell Biology & Neuroscience and Stem Cell Center, College of Natural and Agricultural Sciences, 1113 Biological Sciences Building, Riverside, CA 92521, USA; The Alberta Children's Hospital Research Institute, University of Calgary, Heritage Medical Research Building, 3330 Hospital Drive NW, Calgary, AB, Canada T2N 4N1.
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Jones HD, Yoo J, Crother TR, Kyme P, Ben-Shlomo A, Khalafi R, Tseng CW, Parks WC, Arditi M, Liu GY, Shimada K. Nicotinamide exacerbates hypoxemia in ventilator-induced lung injury independent of neutrophil infiltration. PLoS One 2015; 10:e0123460. [PMID: 25875775 PMCID: PMC4395431 DOI: 10.1371/journal.pone.0123460] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 03/03/2015] [Indexed: 01/31/2023] Open
Abstract
Background Ventilator-induced lung injury is a form of acute lung injury that develops in critically ill patients on mechanical ventilation and has a high degree of mortality. Nicotinamide phosphoribosyltransferase is an enzyme that is highly upregulated in ventilator-induced lung injury and exacerbates the injury when given exogenously. Nicotinamide (vitamin B3) directly inhibits downstream pathways activated by Nicotinamide phosphoribosyltransferase and is protective in other models of acute lung injury. Methods We administered nicotinamide i.p. to mice undergoing mechanical ventilation with high tidal volumes to study the effects of nicotinamide on ventilator-induced lung injury. Measures of injury included oxygen saturations and bronchoalveolar lavage neutrophil counts, protein, and cytokine levels. We also measured expression of nicotinamide phosophoribosyltransferase, and its downstream effectors Sirt1 and Cebpa, Cebpb, Cebpe. We assessed the effect of nicotinamide on the production of nitric oxide during ventilator-induced lung injury. We also studied the effects of ventilator-induced lung injury in mice deficient in C/EBPε. Results Nicotinamide treatment significantly inhibited neutrophil infiltration into the lungs during ventilator-induced lung injury, but did not affect protein leakage or cytokine production. Surprisingly, mice treated with nicotinamide developed significantly worse hypoxemia during mechanical ventilation. This effect was not linked to increases in nitric oxide production or alterations in expression of Nicotinamide phosphoribosyl transferase, Sirt1, or Cebpa and Cebpb. Cebpe mRNA levels were decreased with either nicotinamide treatment or mechanical ventilation, but mice lacking C/EBPε developed the same degree of hypoxemia and ventilator-induced lung injury as wild-type mice. Conclusions Nicotinamide treatment during VILI inhibits neutrophil infiltration of the lungs consistent with a strong anti-inflammatory effect, but paradoxically also leads to the development of significant hypoxemia. These findings suggest that pulmonary neutrophilia is not linked to hypoxemia in ventilator-induced lung injury, and that nicotinamide exacerbates hypoxemia during VILI.
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Affiliation(s)
- Heather D. Jones
- Division of Pulmonary and Critical Care Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, United States of America
- Infectious and Immunologic Diseases Research Center, Cedars-Sinai Medical Center, Los Angeles, CA, United States of America
| | - Jeena Yoo
- Division of Pulmonary and Critical Care Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, United States of America
| | - Timothy R. Crother
- Division of Pediatric Infectious Diseases and Immunology, Cedars-Sinai Medical Center, Los Angeles, CA, United States of America
- Infectious and Immunologic Diseases Research Center, Cedars-Sinai Medical Center, Los Angeles, CA, United States of America
| | - Pierre Kyme
- Division of Pediatric Infectious Diseases and Immunology, Cedars-Sinai Medical Center, Los Angeles, CA, United States of America
- Infectious and Immunologic Diseases Research Center, Cedars-Sinai Medical Center, Los Angeles, CA, United States of America
| | - Anat Ben-Shlomo
- Pituitary Center, Department of Medicine, Cedars Sinai Medical Center, Los Angeles, CA, United States of America
| | - Ramtin Khalafi
- Pituitary Center, Department of Medicine, Cedars Sinai Medical Center, Los Angeles, CA, United States of America
| | - Ching W. Tseng
- Division of Pediatric Infectious Diseases and Immunology, Cedars-Sinai Medical Center, Los Angeles, CA, United States of America
- Infectious and Immunologic Diseases Research Center, Cedars-Sinai Medical Center, Los Angeles, CA, United States of America
| | - William C. Parks
- Division of Pulmonary and Critical Care Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, United States of America
| | - Moshe Arditi
- Division of Pediatric Infectious Diseases and Immunology, Cedars-Sinai Medical Center, Los Angeles, CA, United States of America
- Infectious and Immunologic Diseases Research Center, Cedars-Sinai Medical Center, Los Angeles, CA, United States of America
| | - George Y. Liu
- Division of Pediatric Infectious Diseases and Immunology, Cedars-Sinai Medical Center, Los Angeles, CA, United States of America
- Infectious and Immunologic Diseases Research Center, Cedars-Sinai Medical Center, Los Angeles, CA, United States of America
| | - Kenichi Shimada
- Division of Pediatric Infectious Diseases and Immunology, Cedars-Sinai Medical Center, Los Angeles, CA, United States of America
- Infectious and Immunologic Diseases Research Center, Cedars-Sinai Medical Center, Los Angeles, CA, United States of America
- * E-mail:
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Sun X, Elangovan VR, Mapes B, Camp SM, Sammani S, Saadat L, Ceco E, Ma SF, Flores C, MacDougall MS, Quijada H, Liu B, Kempf CL, Wang T, Chiang ET, Garcia JGN. The NAMPT promoter is regulated by mechanical stress, signal transducer and activator of transcription 5, and acute respiratory distress syndrome-associated genetic variants. Am J Respir Cell Mol Biol 2015; 51:660-7. [PMID: 24821571 DOI: 10.1165/rcmb.2014-0117oc] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [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: 01/10/2023] Open
Abstract
Increased nicotinamide phosphoribosyltransferase (NAMPT) transcription is mechanistically linked to ventilator-induced inflammatory lung injury (VILI), with VILI severity attenuated by reduced NAMPT bioavailability. The molecular mechanisms of NAMPT promoter regulation in response to excessive mechanical stress remain poorly understood. The objective of this study was to define the contribution of specific transcription factors, acute respiratory distress syndrome (ARDS)-associated single nucleotide polymorphisms (SNPs), and promoter demethylation to NAMPT transcriptional regulation in response to mechanical stress. In vivo NAMPT protein expression levels were examined in mice exposed to high tidal volume mechanical ventilation. In vitro NAMPT expression levels were examined in human pulmonary artery endothelial cells exposed to 5 or 18% cyclic stretch (CS), with NAMPT promoter activity assessed using NAMPT promoter luciferase reporter constructs with a series of nested deletions. In vitro NAMPT transcriptional regulation was further characterized by measuring luciferase activity, DNA demethylation, and chromatin immunoprecipitation. VILI-challenged mice exhibited significantly increased NAMPT expression in bronchoalveolar lavage leukocytes and in lung endothelium. A mechanical stress-inducible region (MSIR) was identified in the NAMPT promoter from -2,428 to -2,128 bp. This MSIR regulates NAMPT promoter activity, mRNA expression, and signal transducer and activator of transcription 5 (STAT5) binding, which is significantly increased by 18% CS. In addition, NAMPT promoter activity was increased by pharmacologic promoter demethylation and inhibited by STAT5 silencing. ARDS-associated NAMPT promoter SNPs rs59744560 (-948G/T) and rs7789066 (-2,422A/G) each significantly elevated NAMPT promoter activity in response to 18% CS in a STAT5-dependent manner. Our results show that NAMPT is a key novel ARDS therapeutic target and candidate gene with genetic/epigenetic transcriptional regulation in response to excessive mechanical stress.
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Abstract
This article summarizes the contributions of high-throughput genomic, proteomic, metabolomic, and gene expression investigations to the understanding of inherited or acquired risk for acute respiratory distress syndrome (ARDS). Although not yet widely applied to a complex trait like ARDS, these techniques are now routinely used to study a variety of disease states. Omic applications hold great promise for identifying novel factors that may contribute to ARDS pathophysiology or may be appropriate for further development as biomarkers or surrogates in clinical studies. Opportunities and challenges of different techniques are discussed, and examples of successful applications in non-ARDS fields are used to illustrate the potential use of each technique.
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Affiliation(s)
- Nuala J Meyer
- Pulmonary, Allergy, and Critical Care Medicine, University of Pennsylvania, Perelman School of Medicine, 3600 Spruce Street, 5039 Maloney Building, Philadelphia, PA 19104, USA.
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Sorci L, Ruggieri S, Raffaelli N. NAD homeostasis in the bacterial response to DNA/RNA damage. DNA Repair (Amst) 2014; 23:17-26. [PMID: 25127744 DOI: 10.1016/j.dnarep.2014.07.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Revised: 07/21/2014] [Accepted: 07/25/2014] [Indexed: 12/12/2022]
Abstract
In mammals, NAD represents a nodal point for metabolic regulation, and its availability is critical to genome stability. Several NAD-consuming enzymes are induced in various stress conditions and the consequent NAD decline is generally accompanied by the activation of NAD biosynthetic pathways to guarantee NAD homeostasis. In the bacterial world a similar scenario has only recently begun to surface. Here we review the current knowledge on the involvement of NAD homeostasis in bacterial stress response mechanisms. In particular, we focus on the participation of both NAD-consuming enzymes (DNA ligase, mono(ADP-ribosyl) transferase, sirtuins, and RNA 2'-phosphotransferase) and NAD biosynthetic enzymes (both de novo, and recycling enzymes) in the response to DNA/RNA damage. As further supporting evidence for such a link, a genomic context analysis is presented showing several conserved associations between NAD homeostasis and stress responsive genes.
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Affiliation(s)
- Leonardo Sorci
- Department of Clinical Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Silverio Ruggieri
- Department of Agricultural, Food and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Nadia Raffaelli
- Department of Agricultural, Food and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy.
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