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Alva R, Mirza M, Baiton A, Lazuran L, Samokysh L, Bobinski A, Cowan C, Jaimon A, Obioru D, Al Makhoul T, Stuart JA. Oxygen toxicity: cellular mechanisms in normobaric hyperoxia. Cell Biol Toxicol 2022; 39:111-143. [PMID: 36112262 PMCID: PMC9483325 DOI: 10.1007/s10565-022-09773-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 09/07/2022] [Indexed: 12/15/2022]
Abstract
In clinical settings, oxygen therapy is administered to preterm neonates and to adults with acute and chronic conditions such as COVID-19, pulmonary fibrosis, sepsis, cardiac arrest, carbon monoxide poisoning, and acute heart failure. In non-clinical settings, divers and astronauts may also receive supplemental oxygen. In addition, under current standard cell culture practices, cells are maintained in atmospheric oxygen, which is several times higher than what most cells experience in vivo. In all the above scenarios, the elevated oxygen levels (hyperoxia) can lead to increased production of reactive oxygen species from mitochondria, NADPH oxidases, and other sources. This can cause cell dysfunction or death. Acute hyperoxia injury impairs various cellular functions, manifesting ultimately as physiological deficits. Chronic hyperoxia, particularly in the neonate, can disrupt development, leading to permanent deficiencies. In this review, we discuss the cellular activities and pathways affected by hyperoxia, as well as strategies that have been developed to ameliorate injury.
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Affiliation(s)
- Ricardo Alva
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Maha Mirza
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Adam Baiton
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Lucas Lazuran
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Lyuda Samokysh
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Ava Bobinski
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Cale Cowan
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Alvin Jaimon
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Dede Obioru
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Tala Al Makhoul
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Jeffrey A Stuart
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada.
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Extracellular Signal-Regulated Kinase 1 Alone Is Dispensable for Hyperoxia-Mediated Alveolar and Pulmonary Vascular Simplification in Neonatal Mice. Antioxidants (Basel) 2022; 11:antiox11061130. [PMID: 35740027 PMCID: PMC9219973 DOI: 10.3390/antiox11061130] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/01/2022] [Accepted: 06/03/2022] [Indexed: 02/04/2023] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a morbid lung disease distinguished by lung alveolar and vascular simplification. Hyperoxia, an important BPD causative factor, increases extracellular signal-regulated kinases (ERK)-1/2 expression, whereas decreased lung endothelial cell ERK2 expression reduces angiogenesis and potentiates hyperoxia-mediated BPD in mice. However, ERK1′s role in experimental BPD is unclear. Thus, we hypothesized that hyperoxia-induced experimental BPD would be more severe in global ERK1-knockout (ERK1-/-) mice than their wild-type (ERK1+/+ mice) littermates. We determined the extent of lung development, ERK1/2 expression, inflammation, and oxidative stress in ERK1-/- and ERK1+/+ mice exposed to normoxia (FiO2 21%) or hyperoxia (FiO2 70%). We also quantified the extent of angiogenesis and hydrogen peroxide (H2O2) production in hyperoxia-exposed neonatal human pulmonary microvascular endothelial cells (HPMECs) with normal and decreased ERK1 signaling. Compared with ERK1+/+ mice, ERK1-/- mice displayed increased pulmonary ERK2 activation upon hyperoxia exposure. However, the extent of hyperoxia-induced inflammation, oxidative stress, and interrupted lung development was similar in ERK1-/- and ERK1+/+ mice. ERK1 knockdown in HPMECs increased ERK2 activation at baseline, but did not affect in vitro angiogenesis and hyperoxia-induced H2O2 production. Thus, we conclude ERK1 is dispensable for hyperoxia-induced experimental BPD due to compensatory ERK2 activation.
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Targeting Protein Kinases and Epigenetic Control as Combinatorial Therapy Options for Advanced Prostate Cancer Treatment. Pharmaceutics 2022; 14:pharmaceutics14030515. [PMID: 35335890 PMCID: PMC8949110 DOI: 10.3390/pharmaceutics14030515] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 02/15/2022] [Accepted: 02/21/2022] [Indexed: 02/02/2023] Open
Abstract
Prostate cancer (PC), the fifth leading cause of cancer-related mortality worldwide, is known as metastatic bone cancer when it spreads to the bone. Although there is still no effective treatment for advanced/metastatic PC, awareness of the molecular events that contribute to PC progression has opened up opportunities and raised hopes for the development of new treatment strategies. Androgen deprivation and androgen-receptor-targeting therapies are two gold standard treatments for metastatic PC. However, acquired resistance to these treatments is a crucial challenge. Due to the role of protein kinases (PKs) in the growth, proliferation, and metastases of prostatic tumors, combinatorial therapy by PK inhibitors may help pave the way for metastatic PC treatment. Additionally, PC is known to have epigenetic involvement. Thus, understanding epigenetic pathways can help adopt another combinatorial treatment strategy. In this study, we reviewed the PKs that promote PC to advanced stages. We also summarized some PK inhibitors that may be used to treat advanced PC and we discussed the importance of epigenetic control in this cancer. We hope the information presented in this article will contribute to finding an effective treatment for the management of advanced PC.
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Curcumin Promotes the Expression of IL-35 by Regulating Regulatory T Cell Differentiation and Restrains Uncontrolled Inflammation and Lung Injury in Mice. Inflammation 2021; 43:1913-1924. [PMID: 32535666 DOI: 10.1007/s10753-020-01265-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Interleukin (IL)-35, which has an anti-inflammatory role in acute respiratory distress syndrome (ARDS)/acute lung injury (ALI), is relatively promising as a drug target. Studies have shown that curcumin may play a therapeutic role in ALI and enhance the suppressive function of regulatory T cells (Tregs). To illustrate the effect of curcumin on the regulation of Treg cell differentiation and expression of IL-35, we built a cecal ligation and puncture (CLP)-induced acute lung injury mouse mode with curcumin pretreatment. The expression of IL-35 in serum, severity of lung injury, IL-17A in lung tissue, survival rate, Treg-related cytokines levels in serum, nuclear factor-kappa B (NF-κB)'s nuclear translocation in lung tissue, and splenic CD4+CD25+FOXP3+ Tregs were assessed. Furthermore, the proportion of Tregs, STAT5, and IL-35 expression during naïve CD4+ T cell differentiation in vitro was measured. Compared with the CLP group, the increased IL-35 expression in CLP with the curcumin pretreatment (CLP + Cur) group was consistent with the decreased severity of lung injury, IL-17A protein levels in lung tissue, and Treg-related cytokines levels. Pretreatment with curcumin, the survival rate climbed to 50%, while the mortality rate was 100% in the CLP group. In addition, splenic CD4+CD25+FOXP3+ Treg cells increased in the CLP + Cur group. In vitro, CD4+CD25+FOXP3+ Treg cells from naïve CD4+ T cells, STAT5 proportion, and IL-35 expression increased after curcumin treatment. These findings showed that curcumin might regulate IL-35 by activating the differentiation of Treg cells to control the inflammation in acute lung injury.
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5
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Guillier C, Carrière D, Pansiot J, Maroni A, Billion E, Ringot M, Benoist JF, Jacques S, Matrot B, Jarreau PH, Vaiman D, Baud O, Zana-Taïeb E. Nebulized curcumin protects neonatal lungs from antenatal insult in rats. Am J Physiol Lung Cell Mol Physiol 2021; 321:L545-L552. [PMID: 34159801 DOI: 10.1152/ajplung.00195.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Intrauterine growth restriction (IUGR) increases the risk of bronchopulmonary dysplasia (BPD), one of the major complications of prematurity. Antenatal low-protein diet (LPD) exposure in rats induces IUGR and mimics BPD-related alveolarization disorders. Peroxisome proliferator-activated receptor-γ (PPARγ) plays a key role in normal lung development and was found deregulated following LPD exposure. The objective of this article was to investigate the effects of nebulized curcumin, a natural PPARγ agonist, to prevent IUGR-related abnormal lung development. We studied rat pups antenatally exposed to an LPD or control diet (CTL) and treated with nebulized curcumin (50 mg/kg) or vehicle from postnatal (P) days 1 to 5. The primary readouts were lung morphometric analyses at P21. Immunohistochemistry (P21) and microarrays (P6 and P11) were compared within animals exposed to LPD versus controls, with and without curcumin treatment. Quantitative morphometric analyses revealed that LPD induced abnormal alveolarization as evidenced by a significant increase in mean linear intercept (MLI) observed in P21 LPD-exposed animals. Early curcumin treatment prevented this effect, and two-way ANOVA analysis demonstrated significant interaction between diet and curcumin both for MLI [F(1,39) = 12.67, P = 0.001] and radial alveolar count at P21 [F(1,40) = 6.065, P = 0.0182]. Immunohistochemistry for fatty acid binding protein 4 (FABP4), a major regulator of PPARγ pathway, showed a decreased FABP4+ alveolar cell density in LPD-exposed animals treated by curcumin. Transcriptomic analysis showed that early curcumin significantly prevented the activation of profibrotic pathways observed at P11 in LPD-exposed animals. Nebulized curcumin appears to be a promising strategy to prevent alveolarization disorders in IUGR rat pups, targeting pathways involved in lung development.
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Affiliation(s)
- Cyril Guillier
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Assistance Publique-Hôpitaux de Paris, Service de Médecine et Réanimation néonatales de Port-Royal, Paris, France.,Université Paris Descartes, Paris, France
| | - Diane Carrière
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Assistance Publique-Hôpitaux de Paris, Service de Médecine et Réanimation néonatales de Port-Royal, Paris, France.,Université Paris Descartes, Paris, France
| | - Julien Pansiot
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Université Paris Diderot, Paris, France
| | - Arielle Maroni
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Université Paris Descartes, Paris, France
| | - Elodie Billion
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Assistance Publique-Hôpitaux de Paris, Service de Médecine et Réanimation néonatales de Port-Royal, Paris, France.,Université Paris Descartes, Paris, France
| | - Maud Ringot
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Université Paris Diderot, Paris, France
| | - Jean-François Benoist
- Assistance Publique-Hôpitaux de Paris, Service de Biochimie-Hormonologie, Hôpital Robert Debré, Paris, France
| | - Sébastien Jacques
- Genom'ic. INSERM U1016, Centre National de la Recherche Scientifique (CNRS) Unite Mixte de Recherche (UMR) 8104, Paris, France
| | - Boris Matrot
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Université Paris Diderot, Paris, France
| | - Pierre-Henri Jarreau
- Assistance Publique-Hôpitaux de Paris, Service de Médecine et Réanimation néonatales de Port-Royal, Paris, France.,Université Paris Descartes, Paris, France.,Fondation PremUp, Paris, France.,Université de Paris, Epidemiology and Statistics Research Center (CRESS), INSERM, Institut national de la recherche agronomique (INRA), Paris, France
| | - Daniel Vaiman
- Institut Cochin, Inserm U1016-CNRS UMRS 104, Paris, France
| | - Olivier Baud
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Université Paris Diderot, Paris, France.,Assistance Publique-Hôpitaux de Paris, Service de Réanimation et Pédiatrie néonatales, Hôpital Robert Debré, Paris, France.,Division of Neonatology and Pediatric Intensive Care, Children's University Hospital of Geneva and University of Geneva, Geneva, Switzerland
| | - Elodie Zana-Taïeb
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Assistance Publique-Hôpitaux de Paris, Service de Médecine et Réanimation néonatales de Port-Royal, Paris, France.,Fondation PremUp, Paris, France
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Chen D, Gao ZQ, Wang YY, Wan BB, Liu G, Chen JL, Wu YX, Zhou Q, Jiang SY, Yu RQ, Pang QF. Sodium Propionate Enhances Nrf2-Mediated Protective Defense Against Oxidative Stress and Inflammation in Lipopolysaccharide-Induced Neonatal Mice. J Inflamm Res 2021; 14:803-816. [PMID: 33732006 PMCID: PMC7957230 DOI: 10.2147/jir.s303105] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 02/23/2021] [Indexed: 12/27/2022] Open
Abstract
Background Alveolar arrest and the impaired angiogenesis caused by chronic inflammation and oxidative stress are two main factors in bronchopulmonary dysplasia (BPD). Short-chain fatty acids (SCFAs), especially propionate, possess anti-oxidant and anti-inflammatory effects. The present study was designed to examine the roles of sodium propionate (SP) on lipopolysaccharide (LPS)-challenged BPD and its potential mechanisms. Methods WT, Nrf2-/- mice and pulmonary microvascular endothelial cells (HPMECs) were used in this study. LPS was performed to mimic BPD model both in vivo and vitro. Lung histopathology, inflammation and oxidative stress-related mRNA expressions in lungs involved in BPD pathogenesis were investigated. In addition, cell viability and angiogenesis were also tested. Results The increased nuclear factor erythroid 2-related factor (Nrf2) and decreased Kelch-like ECH-associated protein-1 (Keap-1) expressions were observed after SP treatment in the LPS-induced neonatal mouse model of BPD. In LPS-induced wild-type but not Nrf2-/- neonatal mice, SP reduced pulmonary inflammation and oxidative stress and exhibited obvious pathological alterations of the alveoli. Moreover, in LPS-evoked HPMECs, SP accelerated Nrf2 nuclear translocation presented and exhibited cytoprotective and pro-angiogenesis effects. In addition, SP diminished the LPS-induced inflammatory response by blocking the activation of nuclear factor-kappa B pathway. Moreover, pretreatment with ML385, an Nrf2 specific inhibitor, offsets the beneficial effects of SP on inflammation, oxidative stress and angiogenesis in LPS-evoked HPMECs. Conclusion SP protects against LPS-induced lung alveolar simplification and abnormal angiogenesis in neonatal mice and HPMECs in an Nrf2-dependent manner.
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Affiliation(s)
- Dan Chen
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Zhi-Qi Gao
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Ying-Ying Wang
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Bin-Bin Wan
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Gang Liu
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Jun-Liang Chen
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Ya-Xian Wu
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Qin Zhou
- Department of Neonatology, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi, 214002, Jiangsu Province, People's Republic of China
| | - Shan-Yu Jiang
- Department of Neonatology, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi, 214002, Jiangsu Province, People's Republic of China
| | - Ren-Qiang Yu
- Department of Neonatology, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi, 214002, Jiangsu Province, People's Republic of China
| | - Qing-Feng Pang
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
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7
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Bianco F, Salomone F, Milesi I, Murgia X, Bonelli S, Pasini E, Dellacà R, Ventura ML, Pillow J. Aerosol drug delivery to spontaneously-breathing preterm neonates: lessons learned. Respir Res 2021; 22:71. [PMID: 33637075 PMCID: PMC7908012 DOI: 10.1186/s12931-020-01585-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 11/23/2020] [Indexed: 02/07/2023] Open
Abstract
Delivery of medications to preterm neonates receiving non-invasive ventilation (NIV) represents one of the most challenging scenarios for aerosol medicine. This challenge is highlighted by the undersized anatomy and the complex (patho)physiological characteristics of the lungs in such infants. Key physiological restraints include low lung volumes, low compliance, and irregular respiratory rates, which significantly reduce lung deposition. Such factors are inherent to premature birth and thus can be regarded to as the intrinsic factors that affect lung deposition. However, there are a number of extrinsic factors that also impact lung deposition: such factors include the choice of aerosol generator and its configuration within the ventilation circuit, the drug formulation, the aerosol particle size distribution, the choice of NIV type, and the patient interface between the delivery system and the patient. Together, these extrinsic factors provide an opportunity to optimize the lung deposition of therapeutic aerosols and, ultimately, the efficacy of the therapy. In this review, we first provide a comprehensive characterization of both the intrinsic and extrinsic factors affecting lung deposition in premature infants, followed by a revision of the clinical attempts to deliver therapeutic aerosols to premature neonates during NIV, which are almost exclusively related to the non-invasive delivery of surfactant aerosols. In this review, we provide clues to the interpretation of existing experimental and clinical data on neonatal aerosol delivery and we also describe a frame of measurable variables and available tools, including in vitro and in vivo models, that should be considered when developing a drug for inhalation in this important but under-served patient population.
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Affiliation(s)
- Federico Bianco
- Department of Preclinical Pharmacology, R&D, Chiesi Farmaceutici S.P.A., 43122, Parma, Italy.
| | - Fabrizio Salomone
- Department of Preclinical Pharmacology, R&D, Chiesi Farmaceutici S.P.A., 43122, Parma, Italy
| | - Ilaria Milesi
- Department of Preclinical Pharmacology, R&D, Chiesi Farmaceutici S.P.A., 43122, Parma, Italy
| | | | - Sauro Bonelli
- Department of Preclinical Pharmacology, R&D, Chiesi Farmaceutici S.P.A., 43122, Parma, Italy
| | - Elena Pasini
- Department of Preclinical Pharmacology, R&D, Chiesi Farmaceutici S.P.A., 43122, Parma, Italy
| | - Raffaele Dellacà
- TechRes Lab, Dipartimento Di Elettronica, Informazione E Bioingegneria (DEIB), Politecnico Di Milano University, Milano, Italy
| | | | - Jane Pillow
- School of Human Sciences, University of Western Australia, Perth, Australia
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Gelfand CA, Sakurai R, Wang Y, Liu Y, Segal R, Rehan VK. Inhaled vitamin A is more effective than intramuscular dosing in mitigating hyperoxia-induced lung injury in a neonatal rat model of bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2020; 319:L576-L584. [PMID: 32755324 DOI: 10.1152/ajplung.00266.2020] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Prevention of bronchopulmonary dysplasia (BPD) in premature-birth babies continues to be an unmet medical need. Intramuscular vitamin A is currently employed in preterm neonates to prevent BPD but requires intramuscular injections in fragile neonates. We hypothesized that noninvasive inhaled delivery of vitamin A, targeted to lung, would be a more effective and tolerable strategy. We employed our well-established hyperoxia-injury neonatal rat model, exposing newborn rats to 7 days of constant extreme (95% O2) hyperoxia, comparing vitamin A dosed every 48 h via either aerosol inhalation or intramuscular injection with normoxic untreated healthy animals and vehicle-inhalation hyperoxia groups as positive and negative controls, respectively. Separately, similar vitamin A dosing of normoxia-dwelling animals was performed. Analyses after day 7 included characterization of alveolar histomorphology and protein biomarkers of alveolar maturation [surfactant protein C (SP-C), peroxisome proliferator-activated receptor (PPAR) γ, cholinephosphate cytidylyl transferase, vascular endothelial growth factor and its receptor, FLK-1, and retinoid X receptors (RXR-α, -β, and -γ], apoptosis (Bcl2 and Bax) key injury repair pathway data including protein markers (ALK-5 and β-catenin) and neutrophil infiltration, and serum vitamin A levels. Compared with intramuscular dosing, inhaled vitamin A significantly enhanced biomarkers of alveolar maturation, mitigated hyperoxia-induced lung damage, and enhanced surfactant protein levels, suggesting that it may be more efficacious in preventing BPD in extremely premature infants than the traditionally used IM dosing regimen. We speculate lung-targeted inhaled vitamin A may also be an effective therapy against other lung damaging conditions leading to BPD or, more generally, to acute lung injury.
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Affiliation(s)
| | - Reiko Sakurai
- Department of Pediatrics, The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, David Geffen School of Medicine, Torrance, California
| | - Ying Wang
- Department of Pediatrics, The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, David Geffen School of Medicine, Torrance, California
| | - Yitian Liu
- Department of Pediatrics, The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, David Geffen School of Medicine, Torrance, California
| | - Robert Segal
- Advent Therapeutics, Inc., Doylestown, Pennsylvania
| | - Virender K Rehan
- Department of Pediatrics, The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, David Geffen School of Medicine, Torrance, California
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Menon RT, Shrestha AK, Barrios R, Reynolds C, Shivanna B. Tie-2 Cre-Mediated Deficiency of Extracellular Signal-Regulated Kinase 2 Potentiates Experimental Bronchopulmonary Dysplasia-Associated Pulmonary Hypertension in Neonatal Mice. Int J Mol Sci 2020; 21:ijms21072408. [PMID: 32244398 PMCID: PMC7177249 DOI: 10.3390/ijms21072408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/29/2020] [Accepted: 03/30/2020] [Indexed: 01/09/2023] Open
Abstract
Bronchopulmonary dysplasia (BPD)-associated pulmonary hypertension (PH) is a significant lung morbidity of infants, and disrupted lung angiogenesis is a hallmark of this disease. We observed that extracellular signal-regulated kinases (ERK) 1/2 support angiogenesis in vitro, and hyperoxia activates ERK1/2 in fetal human pulmonary microvascular endothelial cells (HPMECs) and in neonatal murine lungs; however, their role in experimental BPD and PH is unknown. Therefore, we hypothesized that Tie2 Cre-mediated deficiency of ERK2 in the endothelial cells of neonatal murine lungs would potentiate hyperoxia-induced BPD and PH. We initially determined the role of ERK2 in in vitro angiogenesis using fetal HPMECs. To disrupt endothelial ERK2 signaling in the lungs, we decreased ERK2 expression by breeding ERK2flox/flox mice with Tie-Cre mice. One-day-old endothelial ERK2-sufficient (eERK2+/+) or –deficient (eERK2+/−) mice were exposed to normoxia or hyperoxia (FiO2 70%) for 14 d. We then performed lung morphometry, gene and protein expression studies, and echocardiography to determine the extent of inflammation, oxidative stress, and development of lungs and PH. The knockdown of ERK2 in HPMECs decreased in vitro angiogenesis. Hyperoxia increased lung inflammation and oxidative stress, decreased lung angiogenesis and alveolarization, and induced PH in neonatal mice; however, these effects were augmented in the presence of Tie2-Cre mediated endothelial ERK2 deficiency. Therefore, we conclude that endothelial ERK2 signaling is necessary to mitigate hyperoxia-induced experimental BPD and PH in neonatal mice. Our results indicate that endothelial ERK2 is a potential therapeutic target for the management of BPD and PH in infants.
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Affiliation(s)
- Renuka T. Menon
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA; (R.T.M.); (A.K.S.)
| | - Amrit Kumar Shrestha
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA; (R.T.M.); (A.K.S.)
| | - Roberto Barrios
- Department of Pathology and Genomic Medicine, Houston Methodist Hospital, Houston, TX 77030, USA;
| | - Corey Reynolds
- Mouse Phenotyping Core, Baylor College of Medicine, Houston, TX 77030, USA;
| | - Binoy Shivanna
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA; (R.T.M.); (A.K.S.)
- Correspondence: ; Tel.: +1-832-824-6474; Fax: +1-832-825-3204
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10
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Role of Nrf2 and Its Activators in Respiratory Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:7090534. [PMID: 30728889 PMCID: PMC6341270 DOI: 10.1155/2019/7090534] [Citation(s) in RCA: 114] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 11/22/2018] [Accepted: 12/03/2018] [Indexed: 02/07/2023]
Abstract
Transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2) is a major regulator of antioxidant response element- (ARE-) driven cytoprotective protein expression. The activation of Nrf2 signaling plays an essential role in preventing cells and tissues from injury induced by oxidative stress. Under the unstressed conditions, natural inhibitor of Nrf2, Kelch-like ECH-associated protein 1 (Keap1), traps Nrf2 in the cytoplasm and promotes the degradation of Nrf2 by the 26S proteasome. Nevertheless, stresses including highly oxidative microenvironments, impair the ability of Keap1 to target Nrf2 for ubiquitination and degradation, and induce newly synthesized Nrf2 to translocate to the nucleus to bind with ARE. Due to constant exposure to external environments, including diverse pollutants and other oxidants, the redox balance maintained by Nrf2 is fairly important to the airways. To date, researchers have discovered that Nrf2 deletion results in high susceptibility and severity of insults in various models of respiratory diseases, including bronchopulmonary dysplasia (BPD), respiratory infections, acute respiratory distress syndrome (ARDS), chronic obstructive pulmonary disease (COPD), asthma, idiopathic pulmonary fibrosis (IPF), and lung cancer. Conversely, Nrf2 activation confers protective effects on these lung disorders. In the present review, we summarize Nrf2 involvement in the pathogenesis of the above respiratory diseases that have been identified by experimental models and human studies and describe the protective effects of Nrf2 inducers on these diseases.
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Abstract
Over 50 years after its first description, Bronchopulmonary Dysplasia (BPD) remains a devastating pulmonary complication in preterm infants with respiratory failure and develops in 30-50% of infants less than 1000-gram birth weight. It is thought to involve ventilator- and oxygen-induced damage to an immature lung that results in an inflammatory response and ends in aberrant lung development with dysregulated angiogenesis and alveolarization. Significant morbidity and mortality are associated with this most common chronic lung disease of childhood. Thus, any therapies that decrease the incidence or severity of this condition would have significant impact on morbidity, mortality, human costs, and healthcare expenditure. It is clear that an inflammatory response and the elaboration of growth factors and cytokines are associated with the development of BPD. Numerous approaches to control the inflammatory process leading to the development of BPD have been attempted. This review will examine the anti-inflammatory approaches that are established or hold promise for the prevention or treatment of BPD.
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12
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Du L, Roberts JD. Transforming growth factor-β downregulates sGC subunit expression in pulmonary artery smooth muscle cells via MEK and ERK signaling. Am J Physiol Lung Cell Mol Physiol 2018; 316:L20-L34. [PMID: 30260287 DOI: 10.1152/ajplung.00319.2018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
TGFβ activation during newborn lung injury decreases the expression of pulmonary artery smooth muscle cell (PASMC)-soluble guanylate cyclase (sGC), a critical mediator of nitric oxide signaling. Using a rat PASMC line (CS54 cells), we determined how TGFβ downregulates sGC expression. We found that TGFβ decreases sGC expression through stimulating its type I receptor; TGFβ type I receptor (TGFβR1) inhibitors prevented TGFβ-1-mediated decrease in sGCα1 subunit mRNA levels in the cells. However, TGFβR1-Smad mechanisms do not regulate sGC; effective knockdown of Smad2 and Smad3 expression and function did not protect sGCα1 mRNA levels during TGFβ-1 exposure. A targeted small-molecule kinase inhibitor screen suggested that MEK signaling regulates sGC expression in TGFβ-stimulated PASMC. TGFβ activates PASMC MEK/ERK signaling; CS54 cell treatment with TGFβ-1 increased MEK and ERK phosphorylation in a biphasic, time- and dose-dependent manner. Moreover, MEK/ERK activity appears to be required for TGFβ-mediated sGC expression inhibition in PASMC; MEK and ERK inhibitors protected sGCα1 mRNA expression in TGFβ-1-treated CS54 cells. Nuclear ERK activity is sufficient for sGC regulation; heterologous expression of a nucleus-retained, constitutively active ERK2-MEK1 fusion protein decreased CS54 cell sGCα1 mRNA levels. The in vivo relevance of this TGFβ-MEK/ERK-sGC downregulation pathway is suggested by the detection of ERK activation and sGCα1 protein expression downregulation in TGFβ-associated mouse pup hyperoxic lung injury, and the determination that ERK decreases sGCα1 protein expression in TGFβ-1-treated primary PASMC obtained from mouse pups. These studies identify MEK/ERK signaling as an important pathway by which TGFβ regulates sGC expression in PASMC.
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Affiliation(s)
- Lili Du
- Cardiovascular Research Center of the General Medical Services, Massachusetts General Hospital , Boston, Massachusetts.,Harvard Medical School, Cambridge, Massachusetts
| | - Jesse D Roberts
- Cardiovascular Research Center of the General Medical Services, Massachusetts General Hospital , Boston, Massachusetts.,Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital , Boston, Massachusetts.,Department of Pediatrics, Massachusetts General Hospital , Boston, Massachusetts.,Harvard Medical School, Cambridge, Massachusetts
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13
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Russo ER, Facincani I, Nakazato KC, Coimbra TM, Crevelin EJ, Pereira AMS, Carmona F. Oral administration of powdered dried rhizomes of Curcuma longa L. (turmeric, Zingiberaceae) is effective in the treatment of doxorubicin-induced kidney injury in rats. Phytother Res 2018; 32:2408-2416. [PMID: 30109739 DOI: 10.1002/ptr.6176] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 07/16/2018] [Accepted: 07/17/2018] [Indexed: 12/14/2022]
Abstract
Curcumin is a polyphenol present in the rhizomes of the species Curcuma longa L. ("turmeric," Zingiberaceae), which has been used for centuries as an anti-inflammatory. We aimed to evaluate the anti-inflammatory effects of C. longa in renal injury induced by doxorubicin (DOX, 3.5 mg.kg-1 IV). We studied four groups of Wistar rats: two groups with DOX-induced kidney injury, one fed with standard food and another with standard food mixed with C. longa (5 mg.g-1 ). Two other control groups without kidney injury were fed with the same foods. We measured albuminuria, body weight, and food intake every 2 weeks. After 8 weeks, treatment with C. longa did not change albuminuria, but it significantly attenuated the excretion of urinary inflammatory markers monocyte chemoattractant protein-1 (MCP-1) and transforming growth factor-β (TGF-β) and significantly attenuated immunostaining for desmin, vimentin, and ED-1+ cells in renal tissues of rats with DOX-induced kidney injury. In addition, treatment with C. longa resulted in significantly lower glomerular and tubule interstitial injury scores, compared with that in the DOX-STD group. In conclusion, administration of powdered rhizomes of C. longa for 8 weeks to rats with DOX-induced kidney injury did not reduce albuminuria but led to a significant decrease in urinary inflammatory markers MCP-1 and TGF-β and decreased histopathological alterations and immunostaining for desmin, vimentin, and ED-1+ cells kidneys tissues.
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Affiliation(s)
- Enzo R Russo
- Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - Inalda Facincani
- Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - Katia C Nakazato
- Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - Terezila M Coimbra
- Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - Eduardo J Crevelin
- Department of Chemistry, Faculty of Philosophy, Sciences and Letters at Ribeirao Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | | | - Fabio Carmona
- Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
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14
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Zhang D, Wu L, Du Y, Zhu Y, Pan B, Xue X, Fu J. Autophagy inducers restore impaired autophagy, reduce apoptosis, and attenuate blunted alveolarization in hyperoxia-exposed newborn rats. Pediatr Pulmonol 2018; 53:1053-1066. [PMID: 29893049 DOI: 10.1002/ppul.24047] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 04/23/2018] [Indexed: 11/11/2022]
Abstract
AIM Autophagy is a common process during development. Abnormal autophagy can impact cell apoptosis. Previous studies have shown that apoptosis is present during bronchopulmonary dysplasia (BPD). However, there is no consensus on the level of coexisting autophagy. This study was designed to investigate the role of autophagy and the effects of autophagy inducers in a BPD model. METHOD A total of 100 newborn Sprague-Dawley rats were randomly assigned to model and control groups. BPD models were established by hyperoxic induction(FiO2 0.80). Some of them were treated with autophagy-inducing agents. RESULT As compared to the control group, more autophagic bodies were found within Type II alveolar epithelial cells (AT-II cells) under transmission electron microscopy (TEM) in the model group at 3 d . These autophagic bodies were also accompanied by apoptotic bodies and expression of both bodies peaked at 7 d. As shown by TdT-mediated dUTP nick end labeling (TUNEL), there were more apoptotic cells in the model group than in the control group. Protein expression levels of LC3B-II, p62, Lamp1, and cleaved Caspase-3 increased with increased hyperoxic exposure time. No significant differences were observed in the mRNA expression levels of LC3B, p62, and Lamp1. After introducing an autophagy inducer, either rapamycin or lithium chloride, the radial alveolar count (RAC) value of BPD model group increased as compared with placebo group, the thickness of alveolar septum decreased, while apoptosis decreased. CONCLUSION Reduced autophagy resulting from blocked autophagy flow may be a key link in the pathogenesis of BPD. By enhancing repressed autophagy, apoptosis could be reduced and alveolar development improved.
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Affiliation(s)
- Dan Zhang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Linlin Wu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yanna Du
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yuting Zhu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Bingting Pan
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xindong Xue
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jianhua Fu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
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15
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Hyperoxia Disrupts Extracellular Signal-Regulated Kinases 1/2-Induced Angiogenesis in the Developing Lungs. Int J Mol Sci 2018; 19:ijms19051525. [PMID: 29783779 PMCID: PMC5983575 DOI: 10.3390/ijms19051525] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 05/16/2018] [Accepted: 05/18/2018] [Indexed: 11/17/2022] Open
Abstract
Hyperoxia contributes to the pathogenesis of bronchopulmonary dysplasia (BPD), a chronic lung disease of infants that is characterized by interrupted alveologenesis. Disrupted angiogenesis inhibits alveologenesis, but the mechanisms of disrupted angiogenesis in the developing lungs are poorly understood. In pre-clinical BPD models, hyperoxia increases the expression of extracellular signal-regulated kinases (ERK) 1/2; however, its effects on the lung endothelial ERK1/2 signaling are unclear. Further, whether ERK1/2 activation promotes lung angiogenesis in infants is unknown. Hence, we tested the following hypotheses: (1) hyperoxia exposure will increase lung endothelial ERK1/2 signaling in neonatal C57BL/6J (WT) mice and in fetal human pulmonary artery endothelial cells (HPAECs); (2) ERK1/2 inhibition will disrupt angiogenesis in vitro by repressing cell cycle progression. In mice, hyperoxia exposure transiently increased lung endothelial ERK1/2 activation at one week of life, before inhibiting it at two weeks of life. Interestingly, hyperoxia-mediated decrease in ERK1/2 activation in mice was associated with decreased angiogenesis and increased endothelial cell apoptosis. Hyperoxia also transiently activated ERK1/2 in HPAECs. ERK1/2 inhibition disrupted angiogenesis in vitro, and these effects were associated with altered levels of proteins that modulate cell cycle progression. Collectively, these findings support our hypotheses, emphasizing that the ERK1/2 pathway is a potential therapeutic target for BPD infants with decreased lung vascularization.
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16
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Bhullar KS, Lagarón NO, McGowan EM, Parmar I, Jha A, Hubbard BP, Rupasinghe HPV. Kinase-targeted cancer therapies: progress, challenges and future directions. Mol Cancer 2018; 17:48. [PMID: 29455673 PMCID: PMC5817855 DOI: 10.1186/s12943-018-0804-2] [Citation(s) in RCA: 680] [Impact Index Per Article: 113.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Accepted: 02/01/2018] [Indexed: 02/06/2023] Open
Abstract
The human genome encodes 538 protein kinases that transfer a γ-phosphate group from ATP to serine, threonine, or tyrosine residues. Many of these kinases are associated with human cancer initiation and progression. The recent development of small-molecule kinase inhibitors for the treatment of diverse types of cancer has proven successful in clinical therapy. Significantly, protein kinases are the second most targeted group of drug targets, after the G-protein-coupled receptors. Since the development of the first protein kinase inhibitor, in the early 1980s, 37 kinase inhibitors have received FDA approval for treatment of malignancies such as breast and lung cancer. Furthermore, about 150 kinase-targeted drugs are in clinical phase trials, and many kinase-specific inhibitors are in the preclinical stage of drug development. Nevertheless, many factors confound the clinical efficacy of these molecules. Specific tumor genetics, tumor microenvironment, drug resistance, and pharmacogenomics determine how useful a compound will be in the treatment of a given cancer. This review provides an overview of kinase-targeted drug discovery and development in relation to oncology and highlights the challenges and future potential for kinase-targeted cancer therapies.
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Affiliation(s)
- Khushwant S Bhullar
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Naiara Orrego Lagarón
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - Eileen M McGowan
- Chronic Disease Solutions Team, School of Life Science, University of Technology, New South Wales, Australia
| | - Indu Parmar
- Division of Product Development, Radient Technologies, Edmonton, AB, Canada
| | - Amitabh Jha
- Department of Chemistry, Acadia University, Wolfville, NS, Canada
| | - Basil P Hubbard
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - H P Vasantha Rupasinghe
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS, Canada.
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada.
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17
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Sakurai R, Lee C, Shen H, Waring AJ, Walther FJ, Rehan VK. A Combination of the Aerosolized PPAR-γ Agonist Pioglitazone and a Synthetic Surfactant Protein B Peptide Mimic Prevents Hyperoxia-Induced Neonatal Lung Injury in Rats. Neonatology 2018; 113:296-304. [PMID: 29428947 PMCID: PMC5980711 DOI: 10.1159/000486188] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 12/09/2017] [Indexed: 12/16/2022]
Abstract
BACKGROUND Despite improvements in perinatal care, bronchopulmonary dysplasia (BPD) in extremely premature infants has not decreased. Postnatal surfactant therapy provides symptomatic relief from respiratory distress syndrome, but does not translate into a reduction in BPD. Therefore, the search for effective interventions to prevent BPD continues. OBJECTIVES Since PPAR-γ agonists have been demonstrated to promote neonatal lung maturation and injury repair, we hypothesized that a formulation of a PPAR-γ agonist, pioglitazone (PGZ) and a synthetic lung surfactant (a surfactant protein B peptide mimic, B-YL) combined would stimulate lung maturation and block hyperoxia-induced neonatal lung injury more effectively than either modality alone. METHODS One-day-old Sprague-Dawley rat pups were administered PGZ + B-YL via nebulization every 24 h for up to 72 h. The pups were exposed to either 21 or 95% O2, and then sacrificed. Their lungs were examined for markers of lung maturation (levels of PPAR-γ, SP-C and choline-phosphate cytidylyltransferase [CCT-α] and [3H]triolein uptake) and injury repair (bronchoalveolar lavage cell count and protein content, and levels of LEF-1, fibronectin, ALK5, and β-catenin) by Western blot analysis. RESULTS Markers of alveolar epithelial/mesenchymal maturation (PPAR-γ, SP-C, CCT-α, and triolein uptake) increased significantly in the PGZ + B-YL group, more than with either drug alone. Similarly, markers of hyperoxia-induced lung injury were blocked effectively with PGZ + B-YL treatment. CONCLUSIONS Nebulized PPAR-γ agonist PGZ with a synthetic lung surfactant accelerates lung maturation and prevents neonatal hyperoxia-induced lung injury more than either modality alone, with the potential to provide more effective prevention of BPD.
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Affiliation(s)
- Reiko Sakurai
- Department of Pediatrics, David Geffen School of Medicine, University of California Los Angeles, Torrance, California, USA
- Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, California, USA
| | - Cindy Lee
- Department of Pediatrics, David Geffen School of Medicine, University of California Los Angeles, Torrance, California, USA
- Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, California, USA
| | - Humphrey Shen
- Department of Pediatrics, David Geffen School of Medicine, University of California Los Angeles, Torrance, California, USA
- Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, California, USA
| | - Alan J Waring
- Department of Pediatrics, David Geffen School of Medicine, University of California Los Angeles, Torrance, California, USA
- Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, California, USA
| | - Frans J Walther
- Department of Pediatrics, David Geffen School of Medicine, University of California Los Angeles, Torrance, California, USA
- Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, California, USA
| | - Virender K Rehan
- Department of Pediatrics, David Geffen School of Medicine, University of California Los Angeles, Torrance, California, USA
- Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, California, USA
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18
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Ramirez CN, Li W, Zhang C, Wu R, Su S, Wang C, Gao L, Yin R, Kong ANT. Correction to: In Vitro-In Vivo Dose Response of Ursolic Acid, Sulforaphane, PEITC, and Curcumin in Cancer Prevention. AAPS JOURNAL 2018; 20:27. [PMID: 29411155 DOI: 10.1208/s12248-018-0190-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The citation of the author name "Ah-Ng Tony Kong" in PubMed is not the author's preference. Instead of "Kong AT", the author prefers "Kong AN".
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Affiliation(s)
- Christina N Ramirez
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA.,Cellular and Molecular Pharmacology Program, Rutgers Robert Wood Johnson Medical School, Piscataway, New Jersey, 08854, USA
| | - Wenji Li
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA.,Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Chengyue Zhang
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA.,Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA.,Graduate Program in Pharmaceutical Sciences, Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Renyi Wu
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA.,Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Shan Su
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA.,Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Chao Wang
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA.,Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Linbo Gao
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA.,Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Ran Yin
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA.,Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Ah-Ng Tony Kong
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA. .,Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA. .,Graduate Program in Pharmaceutical Sciences, Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA. .,Ernest Mario School of Pharmacy, Room 228, Rutgers, The State University of New Jersey, 160 Frelinghuysen Road, Piscataway, New Jersey, 08854, USA.
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19
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Ramirez CN, Li W, Zhang C, Wu R, Su S, Wang C, Gao L, Yin R, Kong AN. In Vitro-In Vivo Dose Response of Ursolic Acid, Sulforaphane, PEITC, and Curcumin in Cancer Prevention. AAPS J 2017; 20:19. [PMID: 29264822 PMCID: PMC6021020 DOI: 10.1208/s12248-017-0177-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 11/29/2017] [Indexed: 02/07/2023] Open
Abstract
According to the National Center of Health Statistics, cancer was the culprit of nearly 600,000 deaths in 2016 in the USA. It is by far one of the most heterogeneous diseases to treat. Treatment for metastasized cancers remains a challenge despite modern diagnostics and treatment regimens. For this reason, alternative approaches are needed. Chemoprevention using dietary phytochemicals such as triterpenoids, isothiocyanates, and curcumin in the prevention of initiation and/or progression of cancer poses a promising alternative strategy. However, significant challenges exist in the extrapolation of in vitro cell culture data to in vivo efficacy in animal models and to humans. In this review, the dose at which these phytochemicals elicit a response in vitro and in vivo of a multitude of cellular signaling pathways will be reviewed highlighting Nrf2-mediated antioxidative stress, anti-inflammation, epigenetics, cytoprotection, differentiation, and growth inhibition. The in vitro-in vivo dose response of phytochemicals can vary due, in part, to the cell line/animal model used, the assay system of the biomarker used for the readout, chemical structure of the functional analog of the phytochemical, and the source of compounds used for the treatment study. While the dose response varies across different experimental designs, the chemopreventive efficacy appears to remain and demonstrate the therapeutic potential of triterpenoids, isothiocyanates, and curcumin in cancer prevention and in health in general.
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Affiliation(s)
- Christina N Ramirez
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
- Cellular and Molecular Pharmacology Program, Rutgers Robert Wood Johnson Medical School, Piscataway, New Jersey, 08854, USA
| | - Wenji Li
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Chengyue Zhang
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
- Graduate Program in Pharmaceutical Sciences, Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Renyi Wu
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Shan Su
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Chao Wang
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Linbo Gao
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Ran Yin
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Ah-Ng Kong
- Center for Phytochemicals Epigenome Studies, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA.
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA.
- Graduate Program in Pharmaceutical Sciences, Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA.
- Ernest Mario School of Pharmacy, Room 228, Rutgers, The State University of New Jersey, 160 Frelinghuysen Road, Piscataway, New Jersey, 08854, USA.
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20
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Hou C, Peng D, Gao L, Tian D, Dai J, Luo Z, Liu E, Chen H, Zou L, Fu Z. Human umbilical cord-derived mesenchymal stem cells protect from hyperoxic lung injury by ameliorating aberrant elastin remodeling in the lung of O 2-exposed newborn rat. Biochem Biophys Res Commun 2017; 495:1972-1979. [PMID: 29242152 DOI: 10.1016/j.bbrc.2017.12.055] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Accepted: 12/10/2017] [Indexed: 01/08/2023]
Abstract
The incidence and mortality rates of bronchopulmonary dysplasia (BPD) remain very high. Therefore, novel therapies are imminently needed to improve the outcome of this disease. Human umbilical cord-derived mesenchymal stem cells (UC-MSCs) show promising therapeutic effects on oxygen-induced model of BPD. In our experiment, UC-MSCs were intratracheally delivered into the newborn rats exposed to hyperoxia, a well-established BPD model. This study demonstrated that UC-MSCs reduce elastin expression stimulated by 90% O2 in human lung fibroblasts-a (HLF-a), and inhibit HLF-a transdifferentiation into myofibroblasts. In addition, the therapeutic effects of UC-MSCs in neonatal rats with BPD, UC-MSCs could inhibit lung elastase activity and reduce aberrant elastin expression and deposition in the lung of BPD rats. Overall, this study suggested that UC-MSCs could ameliorate aberrant elastin expression in the lung of hyperoxia-induced BPD model which may be associated with suppressing increased TGFβ1 activation.
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Affiliation(s)
- Chen Hou
- Pediatrics Research Institute, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing 400014, China; Chongqing Key Laboratory of Pediatrics, China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, China
| | - Danyi Peng
- Pediatrics Research Institute, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing 400014, China; Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Chongqing Key Laboratory of Pediatrics, China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, China
| | - Li Gao
- Pediatrics Research Institute, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing 400014, China; Department of Otorhinolaryngology, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, China
| | - Daiyin Tian
- Pediatrics Research Institute, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing 400014, China; Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
| | - Jihong Dai
- Pediatrics Research Institute, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing 400014, China; Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
| | - Zhengxiu Luo
- Pediatrics Research Institute, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing 400014, China; Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
| | - Enmei Liu
- Pediatrics Research Institute, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing 400014, China; Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
| | - Hong Chen
- Pediatrics Research Institute, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing 400014, China; Chongqing Key Laboratory of Pediatrics, China; Department of Pediatrics, First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Lin Zou
- Pediatrics Research Institute, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing 400014, China; Center for Clinical Molecular Medicine, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Chongqing Engineering Research Center of Stem Cell Therapy, Chongqing 400014, China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, China.
| | - Zhou Fu
- Pediatrics Research Institute, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing 400014, China; Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Chongqing Engineering Research Center of Stem Cell Therapy, Chongqing 400014, China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, China.
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Dietz RM, Wright CJ. Oxidative stress diseases unique to the perinatal period: A window into the developing innate immune response. Am J Reprod Immunol 2017; 79:e12787. [PMID: 29194835 DOI: 10.1111/aji.12787] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 10/31/2017] [Indexed: 12/15/2022] Open
Abstract
The innate immune system has evolved to play an integral role in the normally developing lung and brain. However, in response to oxidative stress, innate immunity, mediated by specific cellular and molecular programs and signaling, contributes to pathology in these same organ systems. Despite opposing drivers of oxidative stress, namely hyperoxia in neonatal lung injury and hypoxia/ischemia in neonatal brain injury, similar pathways-including toll-like receptors, NFκB and MAPK cascades-have been implicated in tissue damage. In this review, we consider recent insights into the innate immune response to oxidative stress in both neonatal and adult models to better understand hyperoxic lung injury and hypoxic-ischemic brain injury across development and aging. These insights support the development of targeted immunotherapeutic strategies to address the challenge of harnessing the innate immune system in oxidative stress diseases of the neonate.
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Affiliation(s)
- Robert M Dietz
- Section of Neonatology, Department of Pediatrics, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO, USA
| | - Clyde J Wright
- Section of Neonatology, Department of Pediatrics, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO, USA
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Recombinant human elafin promotes alveologenesis in newborn mice exposed to chronic hyperoxia. Int J Biochem Cell Biol 2017; 92:173-182. [DOI: 10.1016/j.biocel.2017.08.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 08/03/2017] [Accepted: 08/07/2017] [Indexed: 01/20/2023]
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23
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Li Q, Wall SB, Ren C, Velten M, Hill CL, Locy ML, Rogers LK, Tipple TE. Thioredoxin Reductase Inhibition Attenuates Neonatal Hyperoxic Lung Injury and Enhances Nuclear Factor E2-Related Factor 2 Activation. Am J Respir Cell Mol Biol 2017; 55:419-28. [PMID: 27089175 DOI: 10.1165/rcmb.2015-0228oc] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Oxygen toxicity and antioxidant deficiencies contribute to the development of bronchopulmonary dysplasia. Aurothioglucose (ATG) and auranofin potently inhibit thioredoxin reductase-1 (TrxR1), and TrxR1 disruption activates nuclear factor E2-related factor 2 (Nrf2), a regulator of endogenous antioxidant responses. We have shown previously that ATG safely and effectively prevents lung injury in adult murine models, likely via Nrf2-dependent mechanisms. The current studies tested the hypothesis that ATG would attenuate hyperoxia-induced lung developmental deficits in newborn mice. Newborn C3H/HeN mice were treated with a single dose of ATG or saline within 12 hours of birth and were exposed to either room air or hyperoxia (85% O2). In hyperoxia, ATG potently inhibited TrxR1 activity in newborn murine lungs, attenuated decreases in body weight, increased the transcription of Nrf2-regulated genes nicotinamide adenine dinucleotide phosphate reduced quinone oxidoreductase-1 (NQO1) and heme oxygenase 1, and attenuated alterations in alveolar development. To determine the impact of TrxR1 inhibition on Nrf2 activation in vitro, murine alveolar epithelial-12 cells were treated with auranofin, which inhibited TrxR1 activity, enhanced Nrf2 nuclear levels, and increased NQO1 and heme oxygenase 1 transcription. Our novel data indicate that a single injection of the TrxR1 inhibitor ATG attenuates hyperoxia-induced alterations in alveolar development in newborn mice. Furthermore, our data support a model in which the effects of ATG treatment likely involve Nrf2 activation, which is consistent with our findings in other lung injury models. We conclude that TrxR1 represents a novel therapeutic target to prevent oxygen-mediated neonatal lung injury.
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Affiliation(s)
- Qian Li
- 1 Neonatal Redox Biology Laboratory.,2 Division of Neonatology, and
| | - Stephanie B Wall
- 1 Neonatal Redox Biology Laboratory.,2 Division of Neonatology, and
| | | | - Markus Velten
- 3 Department of Anesthesiology and Intensive Care Medicine, Rheinische Friedrich-Wilhelms University, University Medical Center, Bonn, Germany; and
| | - Cynthia L Hill
- 4 Center for Perinatal Research, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio
| | - Morgan L Locy
- 5 Medical Scientist Training Program, University of Alabama at Birmingham, Birmingham, Alabama
| | - Lynette K Rogers
- 4 Center for Perinatal Research, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio
| | - Trent E Tipple
- 1 Neonatal Redox Biology Laboratory.,2 Division of Neonatology, and
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24
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Nardiello C, Mižíková I, Morty RE. Looking ahead: where to next for animal models of bronchopulmonary dysplasia? Cell Tissue Res 2016; 367:457-468. [PMID: 27917436 PMCID: PMC5320021 DOI: 10.1007/s00441-016-2534-3] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 11/01/2016] [Indexed: 11/16/2022]
Abstract
Bronchopulmonary dysplasia (BPD) is the most common complication of preterm birth, with appreciable morbidity and mortality in a neonatal intensive care setting. Much interest has been shown in the identification of pathogenic pathways that are amenable to pharmacological manipulation (1) to facilitate the development of novel therapeutic and medical management strategies and (2) to identify the basic mechanisms of late lung development, which remains poorly understood. A number of animal models have therefore been developed and continue to be refined with the aim of recapitulating pathological pulmonary hallmarks noted in lungs from neonates with BPD. These animal models rely on several injurious stimuli, such as mechanical ventilation or oxygen toxicity and infection and sterile inflammation, as applied in mice, rats, rabbits, pigs, lambs and nonhuman primates. This review addresses recent developments in modeling BPD in experimental animals and highlights important neglected areas that demand attention. Additionally, recent progress in the quantitative microscopic analysis of pathology tissue is described, together with new in vitro approaches of value for the study of normal and aberrant alveolarization. The need to examine long-term sequelae of damage to the developing neonatal lung is also considered, as is the need to move beyond the study of the lungs alone in experimental animal models of BPD.
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Affiliation(s)
- Claudio Nardiello
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Parkstrasse 1, 61231, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Giessen, Germany
| | - Ivana Mižíková
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Parkstrasse 1, 61231, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Giessen, Germany
| | - Rory E Morty
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Parkstrasse 1, 61231, Bad Nauheim, Germany. .,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Giessen, Germany.
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25
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Zhang L, Zhao S, Yuan L, Wu H, Jiang H, Luo G. Placenta growth factor contributes to cell apoptosis and epithelial-to-mesenchymal transition in the hyperoxia-induced acute lung injury. Life Sci 2016; 156:30-37. [DOI: 10.1016/j.lfs.2016.05.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 05/06/2016] [Accepted: 05/17/2016] [Indexed: 01/10/2023]
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Curcumin reverses benzidine-induced cell proliferation by suppressing ERK1/2 pathway in human bladder cancer T24 cells. ACTA ACUST UNITED AC 2016; 68:215-22. [PMID: 26776764 DOI: 10.1016/j.etp.2015.12.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 12/01/2015] [Accepted: 12/21/2015] [Indexed: 02/07/2023]
Abstract
Bladder cancer is one of the leading causes of cancer-related death in the world. Prolonged exposure to benzidine is a known cause of bladder cancer. Curcumin has been clinically used in chemoprevention and treatment of cancer. However, it remains unknown whether mitogen-activated protein kinase (MAPK) pathways are involved in curcumin-mediated protection from benzidine-associated promotive effects on bladder cancer. In our study, we found that benzidine increased the proliferation of human bladder cancer T24 cells, triggered transition of the cells from G1 to S phase, elevated the expression of cyclin D1 and proliferating cell nuclear antigen (PCNA) and decreased p21 expression. Meanwhile, exposure of T24 cells to benzidine resulted in activation of extracellular regulated protein kinases 1 and 2 (ERK1/2) pathway as well as activator protein 1 (AP-1) proteins. Treatment with ERK1/2 inhibitor U0126 or curcumin effectively abrogated benzidine-triggered cell proliferation and ERK1/2/AP-1 activation. These results suggested for the first time that curcumin in low concentrations played a protective role in benzidine-induced ERK1/2/AP-1 activation and proliferation of bladder cancer cells, therefore providing new insights into the pathogenesis and chemoprevention of benzidine-associated bladder cancer.
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27
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Cox R, Phillips O, Fukumoto J, Fukumoto I, Parthasarathy PT, Arias S, Cho Y, Lockey RF, Kolliputi N. Enhanced Resolution of Hyperoxic Acute Lung Injury as a result of Aspirin Triggered Resolvin D1 Treatment. Am J Respir Cell Mol Biol 2015; 53:422-35. [PMID: 25647402 DOI: 10.1165/rcmb.2014-0339oc] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Acute lung injury (ALI), which presents as acute respiratory failure, is a major clinical problem that requires aggressive care, and patients who require prolonged oxygen exposure are at risk of developing this disease. Although molecular determinants of ALI have been reported, the molecules involved in disease catabasis associated with oxygen toxicity have not been well studied. It has been reported that lung mucosa is rich in omega-3 fatty acid dicosahexanoic acid (DHA), which has antiinflammatory properties. Aspirin-triggered resolvin D1 (AT-RvD1) is a potent proresolution metabolite of DHA that can curb the inflammatory effects in various acute injuries, yet the effect of AT-RvD1 on hyperoxic acute lung injury (HALI) or in the oxygen toxicity setting in general has not been investigated. The effects of AT-RvD1 on HALI were determined for the first time in 8- to 10-week-old C57BL/6 mice that were exposed to hyperoxia (≥95% O2) for 48 hours. Mice were given AT-RvD1 (100 ng) in saline or a saline vehicle for 24 hours in normoxic (≈21% O2) conditions after hyperoxia. Lung tissue and bronchoalveolar lavage (BAL) fluid were collected for analysis associated with proinflammatory signaling and lung inflammation. AT-RvD1 treatment resulted in reduced oxidative stress, increased glutathione production, and significantly decreased tissue inflammation. AT-RvD1 treatment also significantly reduced the lung wet/dry ratio, protein in BAL fluid, and decreased apoptotic and NF-κB signaling. These results show that AT-RvD1 curbs oxygen-induced lung edema, permeability, inflammation, and apoptosis and is thus an effective therapy for prolonged hyperoxia exposure in this murine model.
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Affiliation(s)
- Ruan Cox
- Departments of 1 Internal Medicine and.,2 Molecular Medicine, Division of Allergy and Immunology, Morsani College of Medicine, University of South Florida, Tampa, Florida
| | | | | | | | | | | | - Young Cho
- Departments of 1 Internal Medicine and
| | | | - Narasaiah Kolliputi
- Departments of 1 Internal Medicine and.,2 Molecular Medicine, Division of Allergy and Immunology, Morsani College of Medicine, University of South Florida, Tampa, Florida
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Silva DMG, Nardiello C, Pozarska A, Morty RE. Recent advances in the mechanisms of lung alveolarization and the pathogenesis of bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2015; 309:L1239-72. [PMID: 26361876 DOI: 10.1152/ajplung.00268.2015] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 09/09/2015] [Indexed: 02/08/2023] Open
Abstract
Alveolarization is the process by which the alveoli, the principal gas exchange units of the lung, are formed. Along with the maturation of the pulmonary vasculature, alveolarization is the objective of late lung development. The terminal airspaces that were formed during early lung development are divided by the process of secondary septation, progressively generating an increasing number of alveoli that are of smaller size, which substantially increases the surface area over which gas exchange can take place. Disturbances to alveolarization occur in bronchopulmonary dysplasia (BPD), which can be complicated by perturbations to the pulmonary vasculature that are associated with the development of pulmonary hypertension. Disturbances to lung development may also occur in persistent pulmonary hypertension of the newborn in term newborn infants, as well as in patients with congenital diaphragmatic hernia. These disturbances can lead to the formation of lungs with fewer and larger alveoli and a dysmorphic pulmonary vasculature. Consequently, affected lungs exhibit a reduced capacity for gas exchange, with important implications for morbidity and mortality in the immediate postnatal period and respiratory health consequences that may persist into adulthood. It is the objective of this Perspectives article to update the reader about recent developments in our understanding of the molecular mechanisms of alveolarization and the pathogenesis of BPD.
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Affiliation(s)
- Diogo M G Silva
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany; Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Claudio Nardiello
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany; Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Agnieszka Pozarska
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany; Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Rory E Morty
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany; Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
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Lingappan K, Moorthy B. Can maternal DHA supplementation offer long-term protection against neonatal hyperoxic lung injury? Am J Physiol Lung Cell Mol Physiol 2015; 309:L1383-6. [PMID: 26361877 DOI: 10.1152/ajplung.00313.2015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 09/08/2015] [Indexed: 12/19/2022] Open
Abstract
The effect of adverse perinatal environment (like maternal infection) has long-standing effects on many organ systems, including the respiratory system. Use of maternal nutritional supplements is an exciting therapeutic option that could be used to protect the developing fetus. In a recent issue of the journal, Ali and associates (Ali M, Heyob KM, Velten M, Tipple TE, Rogers LK. Am J Physiol Lung Cell Mol Physiol 309: L441-L448, 2015) specifically look at maternal docosahexaenoic acid (DHA) supplementation and its effect on chronic apoptosis in the lung in a mouse model of perinatal inflammation and postnatal hyperoxia. Strikingly, the authors show that pulmonary apoptosis was augmented even 8 wk after the hyperoxia-exposed mice had been returned to room air. This effect was significantly attenuated in mice that were subjected to maternal dietary DHA supplementation. These findings are novel, significantly advance our understanding of chronic effects of adverse perinatal and neonatal events on the developing lung, and thereby offer novel therapeutic options in the form of maternal dietary supplementation with DHA. This editorial reviews the long-term effects of adverse perinatal environment on postnatal lung development and the protective effects of dietary supplements such as DHA.
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30
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Lee SM, Chiang SH, Wang HY, Wu PS, Lin CC. Curcumin enhances the production of major structural components of elastic fibers, elastin, and fibrillin-1, in normal human fibroblast cells. Biosci Biotechnol Biochem 2015; 79:247-52. [DOI: 10.1080/09168451.2014.972324] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Abstract
Curcumin is the major component of the yellow extract derived from the rhizome of the Curcuma longa, which is also a main bioactive polyphenol and has been generally used as a spice, food additive, and herbal medicine. In this presented study, we found that curcumin can enhance the production of major structural components of elastic fibers, elastin, and fibrillin-1, in normal human fibroblast cells via increasing ELN and FBN1 promoters’ activities. With 2 μM curcumin treatment, the enhanced tropoelastin and fibrillin-1 protein amounts in Detroit 551 cells were approximately 134 and 130% of control, respectively. Therefore, our results demonstrated that curcumin may be used as a functional compound and applied to drugs, foods, and cosmetics in the future.
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Affiliation(s)
- Shu-Mei Lee
- Department of Cosmetic Science and Management, Mackay Medicine, Nursing and Management College, Taipei, Taiwan, ROC
| | - Shu-Hua Chiang
- Department of Food and Beverage Management, Taiwan Hospitality and Tourism College, Hualien, Taiwan, ROC
| | | | - Pey-Shiuan Wu
- Department of Cosmetic Science, Providence University, Taichung, Taiwan, ROC
| | - Chih-Chien Lin
- Department of Cosmetic Science, Providence University, Taichung, Taiwan, ROC
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31
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Sureshbabu A, Syed MA, Boddupalli CS, Dhodapkar MV, Homer RJ, Minoo P, Bhandari V. Conditional overexpression of TGFβ1 promotes pulmonary inflammation, apoptosis and mortality via TGFβR2 in the developing mouse lung. Respir Res 2015; 16:4. [PMID: 25591994 PMCID: PMC4307226 DOI: 10.1186/s12931-014-0162-6] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 12/19/2014] [Indexed: 12/21/2022] Open
Abstract
Background Earlier studies have reported that transforming growth factor beta 1(TGFβ1) is a critical mediator of hyperoxia-induced acute lung injury (HALI) in developing lungs, leading to impaired alveolarization and a pulmonary phenotype of bronchopulmonary dysplasia (BPD). However, the mechanisms responsible for the TGFβ1-induced inflammatory signals that lead to cell death and abnormal alveolarization are poorly understood. We hypothesized that TGFβ1 signaling via TGFβR2 is necessary for the pathogenesis of the BPD pulmonary phenotype resulting from HALI. Methods We utilized lung epithelial cell-specific TGFβ1 overexpressing transgenic and TGFβR2 null mutant mice to evaluate the effects on neonatal mortality as well as pulmonary inflammation and apoptosis in developing lungs. Lung morphometry was performed to determine the impaired alveolarization and multicolor flow cytometry studies were performed to detect inflammatory macrophages and monocytes in lungs. Apoptotic cell death was measured with TUNEL assay, immunohistochemistry and western blotting and protein expression of angiogenic mediators were also analyzed. Results Our data reveals that increased TGFβ1 expression in newborn mice lungs leads to increased mortality, macrophage and immature monocyte infiltration, apoptotic cell death specifically in Type II alveolar epithelial cells (AECs), impaired alveolarization, and dysregulated angiogenic molecular markers. Conclusions Our study has demonstrated the potential role of inhibition of TGFβ1 signaling via TGFβR2 for improved survival, reduced inflammation and apoptosis that may provide insights for the development of potential therapeutic strategies targeted against HALI and BPD.
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Affiliation(s)
- Angara Sureshbabu
- Department of Pediatrics, Yale University School of Medicine, 333 Cedar Street, New Haven, CT, 06510, USA.
| | - Mansoor A Syed
- Department of Pediatrics, Yale University School of Medicine, 333 Cedar Street, New Haven, CT, 06510, USA.
| | - Chandra Sekhar Boddupalli
- Department of Medicine and Yale Cancer Center, Yale University School of Medicine, 333 Cedar Street, New Haven, CT, 06510, USA.
| | - Madhav V Dhodapkar
- Department of Medicine and Yale Cancer Center, Yale University School of Medicine, 333 Cedar Street, New Haven, CT, 06510, USA.
| | - Robert J Homer
- Department of Pathology, Yale University School of Medicine, 333 Cedar Street, New Haven, CT, 06520, USA.
| | - Parviz Minoo
- Department of Pediatrics, University of Southern California, 1200 North State Street, Los Angeles, CA, 90033, USA.
| | - Vineet Bhandari
- Department of Pediatrics, Yale University School of Medicine, 333 Cedar Street, New Haven, CT, 06510, USA.
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32
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Aberrant elastin remodeling in the lungs of O2-exposed newborn mice; primarily results from perturbed interaction between integrins and elastin. Cell Tissue Res 2014; 359:589-603. [DOI: 10.1007/s00441-014-2035-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 10/13/2014] [Indexed: 01/06/2023]
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O'Reilly M, Thébaud B. Animal models of bronchopulmonary dysplasia. The term rat models. Am J Physiol Lung Cell Mol Physiol 2014; 307:L948-58. [PMID: 25305248 DOI: 10.1152/ajplung.00160.2014] [Citation(s) in RCA: 144] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Bronchopulmonary dysplasia (BPD) is the chronic lung disease of prematurity that affects very preterm infants. Although advances in perinatal care have enabled the survival of infants born as early as 23-24 wk of gestation, the challenge of promoting lung growth while protecting the ever more immature lung from injury is now bigger. Consequently, BPD remains one of the most common complications of extreme prematurity and still lacks specific treatments. Progress in our understanding of BPD and the potential of developing therapeutic strategies have arisen from large (baboons, sheep, and pigs) and small (rabbits, rats, and mice) animal models. This review focuses specifically on the use of the rat to model BPD and summarizes how the model is used in various research studies and the advantages and limitations of this particular model, and it highlights recent therapeutic advances in BPD by using this rat model.
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Affiliation(s)
- Megan O'Reilly
- Department of Pediatrics and Women and Children's Health Research Institute, University of Alberta, Edmonton, Canada; and
| | - Bernard Thébaud
- Ottawa Hospital Research Institute, Sprott Center for Stem Cell Research, Regenerative Medicine Program and Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
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Huang B, Li Q, Xu S, Tian M, Zhen X, Bi Y, Xu F. Substance P protects against hyperoxic-induced lung injury in neonatal rats. Exp Lung Res 2014; 41:12-20. [DOI: 10.3109/01902148.2014.959140] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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35
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Grabacka MM, Gawin M, Pierzchalska M. Phytochemical modulators of mitochondria: the search for chemopreventive agents and supportive therapeutics. Pharmaceuticals (Basel) 2014; 7:913-42. [PMID: 25192192 PMCID: PMC4190497 DOI: 10.3390/ph7090913] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 07/31/2014] [Accepted: 08/13/2014] [Indexed: 02/07/2023] Open
Abstract
Mitochondria are crucially important for maintaining not only the energy homeostasis, but the proper cellular functions in a general sense. Impairment of mitochondrial functions is observed in a broad variety of pathological states such as neoplastic transformations and cancer, neurodegenerative diseases, metabolic disorders and chronic inflammation. Currently, in parallel to the classical drug design approaches, there is an increasing interest in the screening for natural bioactive substances, mainly phytochemicals, in order to develop new therapeutic solutions for the mentioned pathologies. Dietary phytochemicals such as resveratrol, curcumin and sulforaphane are very well tolerated and can effectively complement classical pharmacological therapeutic regimens. In this paper we disscuss the effect of the chosen phytochemicals (e.g., resveratrol, curcumin, sulforaphane) on various aspects of mitochondrial biology, namely mitochondrial biogenesis, membrane potential and reactive oxygen species production, signaling to and from the nucleus and unfolded protein response.
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Affiliation(s)
- Maja M Grabacka
- Department of Food Biotechnology, Faculty of Food Technology, University of Agriculture, ul. Balicka 122, 30-149 Krakow, Poland.
| | - Malgorzata Gawin
- Department of Food Biotechnology, Faculty of Food Technology, University of Agriculture, ul. Balicka 122, 30-149 Krakow, Poland
| | - Malgorzata Pierzchalska
- Department of Food Biotechnology, Faculty of Food Technology, University of Agriculture, ul. Balicka 122, 30-149 Krakow, Poland
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Bhattacharya S, Zhou Z, Yee M, Chu CY, Lopez AM, Lunger VA, Solleti SK, Resseguie E, Buczynski B, Mariani TJ, O'Reilly MA. The genome-wide transcriptional response to neonatal hyperoxia identifies Ahr as a key regulator. Am J Physiol Lung Cell Mol Physiol 2014; 307:L516-23. [PMID: 25150061 DOI: 10.1152/ajplung.00200.2014] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Premature infants requiring supplemental oxygen are at increased risk for developing bronchopulmonary dysplasia (BPD). Rodent models involving neonatal exposure to excessive oxygen concentrations (hyperoxia) have helped to identify mechanisms of BPD-associated pathology. Genome-wide assessments of the effects of hyperoxia in neonatal mouse lungs could identify novel BPD-related genes and pathways. Newborn C57BL/6 mice were exposed to 100% oxygen for 10 days, and whole lung tissue RNA was used for high-throughput, sequencing-based transcriptomic analysis (RNA-Seq). Significance Analysis of Microarrays and Ingenuity Pathway Analysis were used to identify genes and pathways affected. Expression patterns for selected genes were validated by qPCR. Mechanistic relationships between genes were further tested in cultured mouse lung epithelial cells. We identified 300 genes significantly and substantially affected following acute neonatal hyperoxia. Canonical pathways dysregulated in hyperoxia lungs included nuclear factor (erythryoid-derived-2)-like 2-mediated oxidative stress signaling, p53 signaling, eNOS signaling, and aryl hydrocarbon receptor (Ahr) pathways. Cluster analysis identified Ccnd1, Cdkn1a, and Ahr as critical regulatory nodes in the response to hyperoxia, with Ahr serving as the major effector node. A mechanistic role for Ahr was assessed in lung epithelial cells, and we confirmed its ability to regulate the expression of multiple hyperoxia markers, including Cdkn1a, Pdgfrb, and A2m. We conclude that a global assessment of gene regulation in the acute neonatal hyperoxia model of BPD-like pathology has identified Ahr as one driver of gene dysregulation.
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Affiliation(s)
- Soumyaroop Bhattacharya
- Division of Neonatology, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York; Pediatric Molecular and Personalized Medicine Program, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York; and
| | - Zhongyang Zhou
- Division of Neonatology, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York
| | - Min Yee
- Division of Neonatology, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York; Perinatal and Pediatric Origins of Disease Program, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York
| | - Chin-Yi Chu
- Division of Neonatology, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York; Pediatric Molecular and Personalized Medicine Program, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York; and
| | - Ashley M Lopez
- Division of Neonatology, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York; Pediatric Molecular and Personalized Medicine Program, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York; and
| | - Valerie A Lunger
- Division of Neonatology, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York; Pediatric Molecular and Personalized Medicine Program, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York; and
| | - Siva Kumar Solleti
- Division of Neonatology, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York; Pediatric Molecular and Personalized Medicine Program, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York; and
| | - Emily Resseguie
- Division of Neonatology, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York; Perinatal and Pediatric Origins of Disease Program, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York
| | - Bradley Buczynski
- Division of Neonatology, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York; Perinatal and Pediatric Origins of Disease Program, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York
| | - Thomas J Mariani
- Division of Neonatology, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York; Pediatric Molecular and Personalized Medicine Program, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York; and
| | - Michael A O'Reilly
- Division of Neonatology, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York; Perinatal and Pediatric Origins of Disease Program, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York
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Howells LM, Mahale J, Sale S, McVeigh L, Steward WP, Thomas A, Brown K. Translating Curcumin to the Clinic for Lung Cancer Prevention: Evaluation of the Preclinical Evidence for Its Utility in Primary, Secondary, and Tertiary Prevention Strategies. J Pharmacol Exp Ther 2014; 350:483-94. [DOI: 10.1124/jpet.114.216333] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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McKenna S, Michaelis KA, Agboke F, Liu T, Han K, Yang G, Dennery PA, Wright CJ. Sustained hyperoxia-induced NF-κB activation improves survival and preserves lung development in neonatal mice. Am J Physiol Lung Cell Mol Physiol 2014; 306:L1078-89. [PMID: 24748603 DOI: 10.1152/ajplung.00001.2014] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Oxygen toxicity contributes to the pathogenesis of bronchopulmonary dysplasia (BPD). Neonatal mice exposed to hyperoxia develop a simplified lung structure that resembles BPD. Sustained activation of the transcription factor NF-κB and increased expression of protective target genes attenuate hyperoxia-induced mortality in adults. However, the effect of enhancing hyperoxia-induced NF-κB activity on lung injury and development in neonatal animals is unknown. We performed this study to determine whether sustained NF-κB activation, mediated through IκBβ overexpression, preserves lung development in neonatal animals exposed to hyperoxia. Newborn wild-type (WT) and IκBβ-overexpressing (AKBI) mice were exposed to hyperoxia (>95%) or room air from day of life (DOL) 0-14, after which all animals were kept in room air. Survival curves were generated through DOL 14. Lung development was assessed using radial alveolar count (RAC) and mean linear intercept (MLI) at DOL 3 and 28 and pulmonary vessel density at DOL 28. Lung tissue was collected, and NF-κB activity was assessed using Western blot for IκB degradation and NF-κB nuclear translocation. WT mice demonstrated 80% mortality through 14 days of exposure. In contrast, AKBI mice demonstrated 60% survival. Decreased RAC, increased MLI, and pulmonary vessel density caused by hyperoxia in WT mice were significantly attenuated in AKBI mice. These findings were associated with early and sustained NF-κB activation and expression of cytoprotective target genes, including vascular endothelial growth factor receptor 2. We conclude that sustained hyperoxia-induced NF-κB activation improves neonatal survival and preserves lung development. Potentiating early NF-κB activity after hyperoxic exposure may represent a therapeutic intervention to prevent BPD.
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Affiliation(s)
- Sarah McKenna
- Section of Neonatology, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado
| | - Katherine A Michaelis
- Section of Neonatology, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado
| | - Fadeke Agboke
- Department of Pediatrics, Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Thanh Liu
- Section of Neonatology, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado
| | - Kristie Han
- Section of Neonatology, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado
| | - Guang Yang
- Department of Pediatrics, Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Phyllis A Dennery
- Department of Pediatrics, Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Department of Pediatrics, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania
| | - Clyde J Wright
- Section of Neonatology, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado;
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Li Y, Wu R, Zhao S, Cheng H, Ji P, Yu M, Tian Z. RAGE/NF-κB Pathway Mediates Lipopolysaccharide-Induced Inflammation in Alveolar Type I Epithelial Cells Isolated from Neonate Rats. Inflammation 2014; 37:1623-9. [DOI: 10.1007/s10753-014-9889-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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