1
|
Aghajani Mir M. Illuminating the pathogenic role of SARS-CoV-2: Insights into competing endogenous RNAs (ceRNAs) regulatory networks. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2024; 122:105613. [PMID: 38844190 DOI: 10.1016/j.meegid.2024.105613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 05/20/2024] [Accepted: 05/31/2024] [Indexed: 06/10/2024]
Abstract
The appearance of SARS-CoV-2 in 2019 triggered a significant economic and health crisis worldwide, with heterogeneous molecular mechanisms that contribute to its development are not yet fully understood. Although substantial progress has been made in elucidating the mechanisms behind SARS-CoV-2 infection and therapy, it continues to rank among the top three global causes of mortality due to infectious illnesses. Non-coding RNAs (ncRNAs), being integral components across nearly all biological processes, demonstrate effective importance in viral pathogenesis. Regarding viral infections, ncRNAs have demonstrated their ability to modulate host reactions, viral replication, and host-pathogen interactions. However, the complex interactions of different types of ncRNAs in the progression of COVID-19 remains understudied. In recent years, a novel mechanism of post-transcriptional gene regulation known as "competing endogenous RNA (ceRNA)" has been proposed. Long non-coding RNAs (lncRNAs), circular RNAs (circRNAs), and viral ncRNAs function as ceRNAs, influencing the expression of associated genes by sequestering shared microRNAs. Recent research on SARS-CoV-2 has revealed that disruptions in specific ceRNA regulatory networks (ceRNETs) contribute to the abnormal expression of key infection-related genes and the establishment of distinctive infection characteristics. These findings present new opportunities to delve deeper into the underlying mechanisms of SARS-CoV-2 pathogenesis, offering potential biomarkers and therapeutic targets. This progress paves the way for a more comprehensive understanding of ceRNETs, shedding light on the intricate mechanisms involved. Further exploration of these mechanisms holds promise for enhancing our ability to prevent viral infections and develop effective antiviral treatments.
Collapse
Affiliation(s)
- Mahsa Aghajani Mir
- Deputy of Research and Technology, Babol University of Medical Sciences, Babol, Iran.
| |
Collapse
|
2
|
Wu TJ, Jing X, Teng M, Pritchard KA, Day BW, Naylor S, Teng RJ. Role of Myeloperoxidase, Oxidative Stress, and Inflammation in Bronchopulmonary Dysplasia. Antioxidants (Basel) 2024; 13:889. [PMID: 39199135 PMCID: PMC11351552 DOI: 10.3390/antiox13080889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Revised: 07/19/2024] [Accepted: 07/21/2024] [Indexed: 09/01/2024] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a lung complication of premature births. The leading causes of BPD are oxidative stress (OS) from oxygen treatment, infection or inflammation, and mechanical ventilation. OS activates alveolar myeloid cells with subsequent myeloperoxidase (MPO)-mediated OS. Premature human neonates lack sufficient antioxidative capacity and are susceptible to OS. Unopposed OS elicits inflammation, endoplasmic reticulum (ER) stress, and cellular senescence, culminating in a BPD phenotype. Poor nutrition, patent ductus arteriosus, and infection further aggravate OS. BPD survivors frequently suffer from reactive airway disease, neurodevelopmental deficits, and inadequate exercise performance and are prone to developing early-onset chronic obstructive pulmonary disease. Rats and mice are commonly used to study BPD, as they are born at the saccular stage, comparable to human neonates at 22-36 weeks of gestation. The alveolar stage in rats and mice starts at the postnatal age of 5 days. Because of their well-established antioxidative capacities, a higher oxygen concentration (hyperoxia, HOX) is required to elicit OS lung damage in rats and mice. Neutrophil infiltration and ER stress occur shortly after HOX, while cellular senescence is seen later. Studies have shown that MPO plays a critical role in the process. A novel tripeptide, N-acetyl-lysyltyrosylcysteine amide (KYC), a reversible MPO inhibitor, attenuates BPD effectively. In contrast, the irreversible MPO inhibitor-AZD4831-failed to provide similar efficacy. Interestingly, KYC cannot offer its effectiveness without the existence of MPO. We review the mechanisms by which this anti-MPO agent attenuates BPD.
Collapse
Affiliation(s)
- Tzong-Jin Wu
- Department of Pediatrics, Medical College of Wisconsin, Suite C410, Children Corporate Center, 999N 92nd Street, Milwaukee, WI 53226, USA; (T.-J.W.); (X.J.); (M.T.)
- Children’s Research Institute, Medical College of Wisconsin, 8701 W Watertown Plank Rd., Wauwatosa, WI 53226, USA;
| | - Xigang Jing
- Department of Pediatrics, Medical College of Wisconsin, Suite C410, Children Corporate Center, 999N 92nd Street, Milwaukee, WI 53226, USA; (T.-J.W.); (X.J.); (M.T.)
- Children’s Research Institute, Medical College of Wisconsin, 8701 W Watertown Plank Rd., Wauwatosa, WI 53226, USA;
| | - Michelle Teng
- Department of Pediatrics, Medical College of Wisconsin, Suite C410, Children Corporate Center, 999N 92nd Street, Milwaukee, WI 53226, USA; (T.-J.W.); (X.J.); (M.T.)
- Children’s Research Institute, Medical College of Wisconsin, 8701 W Watertown Plank Rd., Wauwatosa, WI 53226, USA;
| | - Kirkwood A. Pritchard
- Children’s Research Institute, Medical College of Wisconsin, 8701 W Watertown Plank Rd., Wauwatosa, WI 53226, USA;
- Department of Surgery, Medical College of Wisconsin, 8701 Watertown Plank Rd., Milwaukee, WI 53226, USA
| | - Billy W. Day
- ReNeuroGen LLC, 2160 San Fernando Dr, Elm Grove, WI 53122, USA; (B.W.D.); (S.N.)
| | - Stephen Naylor
- ReNeuroGen LLC, 2160 San Fernando Dr, Elm Grove, WI 53122, USA; (B.W.D.); (S.N.)
| | - Ru-Jeng Teng
- Department of Pediatrics, Medical College of Wisconsin, Suite C410, Children Corporate Center, 999N 92nd Street, Milwaukee, WI 53226, USA; (T.-J.W.); (X.J.); (M.T.)
- Children’s Research Institute, Medical College of Wisconsin, 8701 W Watertown Plank Rd., Wauwatosa, WI 53226, USA;
| |
Collapse
|
3
|
Rahman MS, Hossain MS. Eicosanoids Signals in SARS-CoV-2 Infection: A Foe or Friend. Mol Biotechnol 2023:10.1007/s12033-023-00919-4. [PMID: 37878227 DOI: 10.1007/s12033-023-00919-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 09/25/2023] [Indexed: 10/26/2023]
Abstract
SARS-CoV-2 mediated infection instigated a scary pandemic state since 2019. They created havoc comprising death, imbalanced social structures, and a wrecked global economy. During infection, the inflammation and associated cytokine storm generate a critical pathological situation in the human body, especially in the lungs. By the passage of time of infection, inflammatory disorders, and multiple organ damage happen which might lead to death, if not treated properly. Until now, many pathological parameters have been used to understand the progress of the severity of COVID-19 but with limited success. Bioactive lipid mediators have the potential of initiating and resolving inflammation in any disease. The connection between lipid storm and inflammatory states of SARS-CoV-2 infection has surfaced and got importance to understand and mitigate the pathological states of COVID-19. As the role of eicosanoids in COVID-19 infection is not well defined, available information regarding this issue has been accumulated to address the possible network of eicosanoids related to the initiation of inflammation, promotion of cytokine storm, and resolution of inflammation, and highlight possible strategies for treatment and drug discovery related to SARS-CoV-2 infection in this study. Understanding the involvement of eicosanoids in exploration of cellular events provoked by SARS-CoV-2 infection has been summarized as an important factor to deescalate any upcoming catastrophe imposed by the lethal variants of this micro-monster. Additionally, this study also recognized the eicosanoid based drug discovery, treatment, and strategies for managing the severity of SARS-COV-2 infection.
Collapse
Affiliation(s)
- Mohammad Sharifur Rahman
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Dhaka, Dhaka, 1000, Bangladesh.
| | - Mohammad Salim Hossain
- Department of Pharmacy, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh.
| |
Collapse
|
4
|
Deng B, Liao F, Liu Y, He P, Wei S, Liu C, Dong W. Comprehensive analysis of endoplasmic reticulum stress-associated genes signature of ulcerative colitis. Front Immunol 2023; 14:1158648. [PMID: 37287987 PMCID: PMC10243217 DOI: 10.3389/fimmu.2023.1158648] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 05/04/2023] [Indexed: 06/09/2023] Open
Abstract
Background Endoplasmic reticulum stress (ERS) is a critical factor in the development of ulcerative colitis (UC); however, the underlying molecular mechanisms remain unclear. This study aims to identify pivotal molecular mechanisms related to ERS in UC pathogenesis and provide novel therapeutic targets for UC. Methods Colon tissue gene expression profiles and clinical information of UC patients and healthy controls were obtained from the Gene Expression Omnibus (GEO) database, and the ERS-related gene set was downloaded from GeneCards for analysis. Weighted gene co-expression network analysis (WGCNA) and differential expression analysis were utilized to identify pivotal modules and genes associated with UC. A consensus clustering algorithm was used to classify UC patients. The CIBERSORT algorithm was employed to evaluate the immune cell infiltration. Gene Set Variation Analysis (GSVA), Gene Ontology (GO), and Kyoto Encyclopedia of Genes and Genomes (KEGG) were used to explore potential biological mechanisms. The external sets were used to validate and identify the relationship of ERS-related genes with biologics. Small molecule compounds were predicted using the Connectivity Map (CMap) database. Molecular docking was performed to simulate the binding conformation of small molecule compounds and key targets. Results The study identified 915 differentially expressed genes (DEGs) and 11 ERS-related genes (ERSRGs) from the colonic mucosa of UC patients and healthy controls, and these genes had good diagnostic value and were highly correlated. Five potential small-molecule drugs sharing tubulin inhibitors were identified, including albendazole, fenbendazole, flubendazole, griseofulvin, and noscapine, among which noscapine exhibited the highest correlation with a high binding affinity to the targets. Active UC and 10 ERSRGs were associated with a large number of immune cells, and ERS was also associated with colon mucosal invasion of active UC. Significant differences in gene expression patterns and immune cell infiltration abundance were observed among ERS-related subtypes. Conclusion The results suggest that ERS plays a vital role in UC pathogenesis, and noscapine may be a promising therapeutic agent for UC by affecting ERS.
Collapse
Affiliation(s)
- Beiying Deng
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Fei Liao
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yinghui Liu
- Department of Geriatric, Renmin Hospital of Wuhan University, Wuhan, China
| | - Pengzhan He
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Shuchun Wei
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Chuan Liu
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Weiguo Dong
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
| |
Collapse
|
5
|
Pritchard KA, Jing X, Teng M, Wells C, Jia S, Afolayan AJ, Jarzembowski J, Day BW, Naylor S, Hessner MJ, Konduri GG, Teng RJ. Role of endoplasmic reticulum stress in impaired neonatal lung growth and bronchopulmonary dysplasia. PLoS One 2022; 17:e0269564. [PMID: 36018859 PMCID: PMC9417039 DOI: 10.1371/journal.pone.0269564] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 05/24/2022] [Indexed: 11/18/2022] Open
Abstract
Myeloperoxidase (MPO), oxidative stress (OS), and endoplasmic reticulum (ER) stress are increased in the lungs of rat pups raised in hyperoxia, an established model of bronchopulmonary dysplasia (BPD). However, the relationship between OS, MPO, and ER stress has not been examined in hyperoxia rat pups. We treated Sprague-Dawley rat pups with tunicamycin or hyperoxia to determine this relationship. ER stress was detected using immunofluorescence, transcriptomic, proteomic, and electron microscopic analyses. Immunofluorescence observed increased ER stress in the lungs of hyperoxic rat BPD and human BPD. Proteomic and morphometric studies showed that tunicamycin directly increased ER stress of rat lungs and decreased lung complexity with a BPD phenotype. Previously, we showed that hyperoxia initiates a cycle of destruction that we hypothesized starts from increasing OS through MPO accumulation and then increases ER stress to cause BPD. To inhibit ER stress, we used tauroursodeoxycholic acid (TUDCA), a molecular chaperone. To break the cycle of destruction and reduce OS and MPO, we used N-acetyl-lysyltyrosylcysteine amide (KYC). The fact that TUDCA improved lung complexity in tunicamycin- and hyperoxia-treated rat pups supports the idea that ER stress plays a causal role in BPD. Additional support comes from data showing TUDCA decreased lung myeloid cells and MPO levels in the lungs of tunicamycin- and hyperoxia-treated rat pups. These data link OS and MPO to ER stress in the mechanisms mediating BPD. KYC's inhibition of ER stress in the tunicamycin-treated rat pup's lung provides additional support for the idea that MPO-induced ER stress plays a causal role in the BPD phenotype. ER stress appears to expand our proposed cycle of destruction. Our results suggest ER stress evolves from OS and MPO to increase neonatal lung injury and impair growth and development. The encouraging effect of TUDCA indicates that this compound has the potential for treating BPD.
Collapse
Affiliation(s)
- Kirkwood A. Pritchard
- Division of Pediatric Surgery, Department of Surgery, Medical College of Wisconsin, Wauwatosa, Wisconsin, United States of America,Children’s Research Institute, Medical College of Wisconsin, Wauwatosa, Wisconsin, United States of America
| | - Xigang Jing
- Children’s Research Institute, Medical College of Wisconsin, Wauwatosa, Wisconsin, United States of America,Department of Pediatrics, Medical College of Wisconsin, Wauwatosa, Wisconsin, United States of America
| | - Michelle Teng
- Department of Pediatrics, Medical College of Wisconsin, Wauwatosa, Wisconsin, United States of America
| | - Clive Wells
- Electron Microscope Facility, Medical College of Wisconsin, Wauwatosa, Wisconsin, United States of America
| | - Shuang Jia
- Department of Pediatrics, Medical College of Wisconsin, Wauwatosa, Wisconsin, United States of America
| | - Adeleye J. Afolayan
- Children’s Research Institute, Medical College of Wisconsin, Wauwatosa, Wisconsin, United States of America,Department of Pediatrics, Medical College of Wisconsin, Wauwatosa, Wisconsin, United States of America
| | - Jason Jarzembowski
- Children’s Research Institute, Medical College of Wisconsin, Wauwatosa, Wisconsin, United States of America,Division of Pediatric Pathology, Department of Pathology, Medical College of Wisconsin, Wauwatosa, Wisconsin, United States of America
| | - Billy W. Day
- ReNeuroGen L.L.C. Milwaukee, Elm Grove, Wisconsin, United States of America
| | - Stephen Naylor
- ReNeuroGen L.L.C. Milwaukee, Elm Grove, Wisconsin, United States of America
| | - Martin J. Hessner
- Children’s Research Institute, Medical College of Wisconsin, Wauwatosa, Wisconsin, United States of America,Department of Pediatrics, Medical College of Wisconsin, Wauwatosa, Wisconsin, United States of America
| | - G. Ganesh Konduri
- Children’s Research Institute, Medical College of Wisconsin, Wauwatosa, Wisconsin, United States of America,Department of Pediatrics, Medical College of Wisconsin, Wauwatosa, Wisconsin, United States of America
| | - Ru-Jeng Teng
- Children’s Research Institute, Medical College of Wisconsin, Wauwatosa, Wisconsin, United States of America,Department of Pediatrics, Medical College of Wisconsin, Wauwatosa, Wisconsin, United States of America,* E-mail:
| |
Collapse
|
6
|
Tao W, Li L, Hu J, Xu S, Wang B, Ding J, Zhang M, Meng X, Wei X, Shan X, Peng K, Liu H, Ji F. Interaction between COX-2 and ER stress is involved in the apoptosis-induced myocardial ischemia/reperfusion injury. Am J Transl Res 2022; 14:3360-3371. [PMID: 35702111 PMCID: PMC9185046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 03/31/2022] [Indexed: 06/15/2023]
Abstract
PURPOSE Apoptosis induced by excessive endoplasmic reticulum (ER) stress is accompanied by the occurrence and progression of myocardial ischemia/reperfusion (I/R) injury. COX-2 is also known to affect the development of I/R damage in myocardium. However, the interaction between COX-2 and ER stress in aggravating myocardial I/R lesion is not well characterized. Therefore, the purpose of our research was to explore the interaction between COX-2 and ER stress on myocardial apoptosis. METHODS The left anterior descending (LAD) coronary artery was ligatured with a 6-0# suture for 0.5 hours and subsequently subjected to reperfusion for 3 hours to simulate myocardial I/R in mice. Oxygen glucose deprivation/reoxygenation (OGD/R) was performed on H9c2 cells to construct an in vitro model of this experiment. NS398 (COX-2 specific inhibitor) and Salubrinal (Sal, ER stress inhibitor) were administered to assess the function of COX-2 and ER stress in myocardial I/R impairment. CCK-8 assay was used to evaluate the viability of H9c2 cells under different treatment conditions. TUNEL and Hoechst staining were used to detect the occurrence of apoptosis. Infarct area/area at risk and Hematoxylin-eosin stained sections were assessed after I/R. Protein expressions of glucose-regulated protein 78 (GRP78), COX-2, phosphorylation of eukaryotic translation initiation factor 2 alpha (p-eIF2α), CCAAT/enhancer-binding protein homologous protein (CHOP), and Cleaved caspase 3 in the myocardium were examined using Western blotting. Changes in Cleaved caspase 3 expression in myocardial slices were measured by immunohistochemistry. RESULTS Sal or NS398 partly reduced I/R-induced damage as testified by the apparent decrease in infarct size after I/R and reduced cell viability following OGD/R. Sal distinctly increased p-eIF2α, but caused decreased expression of COX-2, Cleaved caspase 3, and ER stress-associated proteins after I/R, suggesting that Sal effectively inhibited ER stress, apoptosis, and COX-2. Pretreatment with NS398 blocked I/R or OGD/R-induced upregulation of COX-2, Cleaved caspase 3, and ER stress-related marker proteins. CONCLUSIONS Interaction of COX-2 and ER stress regulates apoptosis and contributes to Myocardial lesion induced by I/R.
Collapse
Affiliation(s)
- Wenhui Tao
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
| | - Lingui Li
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
| | - Junkai Hu
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
| | - Shangxian Xu
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
| | - Biying Wang
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
| | - Jun Ding
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
| | - Mian Zhang
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
| | - Xiaowen Meng
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
| | - Xiang Wei
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
| | - Xisheng Shan
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
| | - Ke Peng
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
| | - Huayue Liu
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
| | - Fuhai Ji
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
| |
Collapse
|
7
|
Zhang S, Luan X, Li H, Jin Z. Insulin-like growth factor-1: A potential target for bronchopulmonary dysplasia treatment (Review). Exp Ther Med 2022; 23:191. [PMID: 35126694 PMCID: PMC8794548 DOI: 10.3892/etm.2022.11114] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Accepted: 12/08/2021] [Indexed: 11/05/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a common respiratory disorder among preterm infants, particularly low-birth-weight infants (LBWIs) and very-low-birth-weight infants (VLBWIs). Although BPD was first reported 50 years ago, no specific drugs or efficient measures are yet available for prevention or treatment. Insulin-like growth factor-1 (IGF-1) belongs to the insulin family. It promotes mitosis and stimulates cell proliferation and DNA synthesis, the primary factors involved in pulmonary development during the fetal and postnatal periods. Several studies have reported that IGF-1 exerts certain effects on BPD genesis and progression by regulating BPD-related biological processes. In addition, exogenous addition of IGF-1 can alleviate lung inflammation, cell apoptosis and eliminate alveolar development disorders in children with BPD. These findings suggest that IGF-1 could be a new target for treating BPD. Here, we summarize and analyze the definition, pathogenesis, and research status of BPD, as well as the pathogenesis of IGF-1 in BPD and the latest findings in related biological processes.
Collapse
Affiliation(s)
- Shujian Zhang
- Department of Pediatrics, Affiliated Hospital of Yanbian University, Yanji, Jilin 133000, P.R. China
| | - Xue Luan
- Department of Pediatrics, First Hospital, Jilin University, Changchun, Jilin 130000, P.R. China
| | - Huiwen Li
- Department of Pediatrics, Affiliated Hospital of Yanbian University, Yanji, Jilin 133000, P.R. China
| | - Zhengyong Jin
- Department of Pediatrics, Affiliated Hospital of Yanbian University, Yanji, Jilin 133000, P.R. China
| |
Collapse
|
8
|
Cardiac injury on admission linked to worse outcomes in hospitalized COVID-19 patients. VOJNOSANIT PREGL 2022. [DOI: 10.2298/vsp210602012z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Objectives: To explore the relationships between cardiac injury and COVID-19
severity and mortality in patients. Methods: All consecutive patients with
laboratory-confirmed COVID-19 were included and followed up until discharge
or death from January 30, 2020, to April 5, 2020. Results: A total of 256
COVID-19 patients were included, and 24 (9.4%) had cardiac injury on
admission. Patients with cardiac injury were older (72.76 vs. 55.76) and
more likely to be male (82.8% vs. 42.2%), more likely to be smokers (31.0%
vs. 12.5%) and more likely to have chronic cardiovascular disease (24.1% vs.
7.8%), chronic pulmonary disease (17.2% vs. 3.0%) and chronic kidney disease
(10.3% vs. 2.2%). Laboratory findings suggested that patients with cardiac
injury were more likely to have leukocyte counts >10?109/L and higher levels
of lymphopenia, direct bilirubin, myohemoglobin, blood urea nitrogen,
C-reactive protein, and pro-hormone BNP but lower levels of serum total
protein and estimated glomerular filtration rates. Patients with cardiac
injury experienced more complications (72.4% vs. 47.8%), including acute
respiratory distress syndrome (20.7% vs. 2.7%), acute kidney injury (10.3
vs. 0.4%), severe COVID-19 (58.6% vs. 11.6%) and death (55.2% vs. 3.9%).
Multivariate analyses showed that cardiac injury was associated with an
increased risk of severe COVID-19 (HR=8.71, 95% CI 2.37-32.04) and death
(HR=20.84, 95% CI 1.32-328.22). Conclusion: Cardiac injury on admission is
associated with a higher risk of disease progression and death.
Collapse
|
9
|
Sahni M, Bhandari V. Patho-mechanisms of the origins of bronchopulmonary dysplasia. Mol Cell Pediatr 2021; 8:21. [PMID: 34894313 PMCID: PMC8665964 DOI: 10.1186/s40348-021-00129-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 11/15/2021] [Indexed: 12/17/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) continues to be one of the most common complications of prematurity, despite significant advancement in neonatology over the last couple of decades. The new BPD is characterized histopathologically by impaired lung alveolarization and dysregulated vascularization. With the increased survival of extremely preterm infants, the risk for the development of BPD remains high, emphasizing the continued need to understand the patho-mechanisms that play a role in the development of this disease. This brief review summarizes recent advances in our understanding of the maldevelopment of the premature lung, highlighting recent research in pathways of oxidative stress-related lung injury, the role of placental insufficiency, growth factor signaling, the extracellular matrix, and microRNAs.
Collapse
Affiliation(s)
- Mitali Sahni
- Pediatrix Medical Group, Sunrise Children's Hospital, Las Vegas, NV, USA.,University of Nevada, Las Vegas, NV, USA
| | - Vineet Bhandari
- Neonatology Research Laboratory, Education and Research Building, Cooper University Hospital, One Cooper Plaza, Camden, NJ, 08103, USA.
| |
Collapse
|
10
|
Chen J, Chen Y, Du X, Liu G, Fei X, Peng JR, Zhang X, Xiao F, Wang X, Yang X, Feng Z. Integrative Studies of Human Cord Blood Derived Mononuclear Cells and Umbilical Cord Derived Mesenchyme Stem Cells in Ameliorating Bronchopulmonary Dysplasia. Front Cell Dev Biol 2021; 9:679866. [PMID: 34858969 PMCID: PMC8631197 DOI: 10.3389/fcell.2021.679866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 08/30/2021] [Indexed: 11/13/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a common pulmonary complication observed in preterm infants that is composed of multifactorial pathogenesis. Current strategies, albeit successful in moderately reducing morbidity and mortality of BPD, failed to draw overall satisfactory conclusion. Here, using a typical mouse model mimicking hallmarks of BPD, we revealed that both cord blood-derived mononuclear cells (CB-MNCs) and umbilical cord-derived mesenchymal stem cells (UC-MSCs) are efficient in alleviating BPD. Notably, infusion of CB-MNCs has more prominent effects in preventing alveolar simplification and pulmonary vessel loss, restoring pulmonary respiratory functions and balancing inflammatory responses. To further elucidate the underlying mechanisms within the divergent therapeutic effects of UC-MSC and CB-MNC, we systematically investigated the long noncoding RNA (lncRNA)-microRNA (miRNA)-messenger RNA (mRNA) and circular RNA (circRNA)-miRNA-mRNA networks by whole-transcriptome sequencing. Importantly, pathway analysis integrating Gene Ontology (GO)/Kyoto Encyclopedia of Genes and Genomes (KEGG)/gene set enrichment analysis (GSEA) method indicates that the competing endogenous RNA (ceRNA) network is mainly related to the regulation of GTPase activity (GO: 0043087), extracellular signal-regulated kinase 1 (ERK1) and ERK2 signal cascade (GO: 0070371), chromosome regulation (GO: 0007059), and cell cycle control (GO: 0044770). Through rigorous selection of the lncRNA/circRNA-based ceRNA network, we demonstrated that the hub genes reside in UC-MSC- and CB-MNC-infused networks directed to the function of cell adhesion, motor transportation (Cdk13, Lrrn2), immune homeostasis balance, and autophagy (Homer3, Prkcd) relatively. Our studies illustrate the first comprehensive mRNA-miRNA-lncRNA and mRNA-miRNA-circRNA networks in stem cell-infused BPD model, which will be valuable in identifying reliable biomarkers or therapeutic targets for BPD pathogenesis and shed new light in the priming and conditioning of UC-MSCs or CB-MNCs in the treatment of neonatal lung injury.
Collapse
Affiliation(s)
- Jia Chen
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Department of Neonatology, Senior Department of Pediatrics, The Seventh Medical Center of PLA General Hospital, Beijing, China.,National Engineering Laboratory for Birth Defects Prevention and Control of Key Technology, Beijing, China.,Beijing Key Laboratory of Pediatric Organ Failure, Beijing, China
| | - Yuhan Chen
- Department of Neonatology, Senior Department of Pediatrics, The Seventh Medical Center of PLA General Hospital, Beijing, China.,National Engineering Laboratory for Birth Defects Prevention and Control of Key Technology, Beijing, China.,Beijing Key Laboratory of Pediatric Organ Failure, Beijing, China
| | - Xue Du
- Department of Neonatology, Senior Department of Pediatrics, The Seventh Medical Center of PLA General Hospital, Beijing, China.,National Engineering Laboratory for Birth Defects Prevention and Control of Key Technology, Beijing, China.,Beijing Key Laboratory of Pediatric Organ Failure, Beijing, China.,The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Guojun Liu
- Shandong Qilu Stem Cell Engineering Co., Ltd., Jinan, China
| | - Xiaowei Fei
- The First Affiliated Hospital of Dalian Medical University, Dalian, China.,Department of Neurosurgery, Xijing Hospital, Air Force Military Medical University, Xi'an, China
| | - Jian Ru Peng
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Department of Neonatology, Senior Department of Pediatrics, The Seventh Medical Center of PLA General Hospital, Beijing, China.,National Engineering Laboratory for Birth Defects Prevention and Control of Key Technology, Beijing, China.,Beijing Key Laboratory of Pediatric Organ Failure, Beijing, China
| | - Xing Zhang
- Department of Neonatology, Senior Department of Pediatrics, The Seventh Medical Center of PLA General Hospital, Beijing, China.,National Engineering Laboratory for Birth Defects Prevention and Control of Key Technology, Beijing, China.,Beijing Key Laboratory of Pediatric Organ Failure, Beijing, China
| | - Fengjun Xiao
- Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, Beijing, China
| | - Xue Wang
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiao Yang
- Department of Neonatology, Senior Department of Pediatrics, The Seventh Medical Center of PLA General Hospital, Beijing, China.,National Engineering Laboratory for Birth Defects Prevention and Control of Key Technology, Beijing, China.,Beijing Key Laboratory of Pediatric Organ Failure, Beijing, China
| | - Zhichun Feng
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Department of Neonatology, Senior Department of Pediatrics, The Seventh Medical Center of PLA General Hospital, Beijing, China.,National Engineering Laboratory for Birth Defects Prevention and Control of Key Technology, Beijing, China.,Beijing Key Laboratory of Pediatric Organ Failure, Beijing, China.,The First Affiliated Hospital of Dalian Medical University, Dalian, China
| |
Collapse
|
11
|
Zhu Y, Ju H, Lu H, Tang W, Lu J, Wang Q. The function role of ubiquitin proteasome pathway in the ER stress-induced AECII apoptosis during hyperoxia exposure. BMC Pulm Med 2021; 21:379. [PMID: 34809635 PMCID: PMC8607682 DOI: 10.1186/s12890-021-01751-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 11/15/2021] [Indexed: 11/23/2022] Open
Abstract
Background Bronchopulmonary dysplasia (BPD) is a major cause of mortality and morbidity in premature infants, characterized by alveolar dysplasia and pulmonary microvascular remodeling. In the present study, we have investigated the functional roles of ubiquitin proteasome pathway (UPP) in BPD, and its relationship with endoplasmic reticulum stress (ERS) mediated type II alveolar epithelial cell (AECII) apoptosis. Methods A hyperoxia-induced BPD rat model was constructed and the pathologic changes of lung tissues were evaluated by hematoxylin–eosin staining. Cell apoptosis and protein expression were determined by TUNEL assay and Western blotting, respectively. Further reagent kit with specific fluorescent substrate was utilized to measure the activity of 20 s proteasome. Meanwhile, AECII were cultured in vitro and exposed to hyperoxia. AECII apoptosis were measured by flow cytometry. In contrast, MG132 treatment was induced to explore UPP during hyperoxia exposure on AECII apoptosis and ERS sensors expression. Results A significant increase in apoptosis and total ubiquitinated proteins expression were observed in BPD rats and AECII culture, and the change of UPP was associated with ERS. In order to confirm the role of UPP in AECII apoptosis of BPD, AECII cells were treated by MG132 with the concentration of 10 μmol/L under hyperoxia exposure. We found that the proteins expression of glucose-regulated protein 78 (GRP-78), PKR-like ER kinase (PERK), activating transcription factor 4 (ATF4), activating transcription factor 6 (ATF6) and C/EBP homologous protein (CHOP), as well as AECII apoptosis were increased following MG132 treatment. Furthermore, the relatively up-regulated in the levels of total ubiquitinated proteins expression and 20 s proteasome activity were correlated with increased ERS sensors expression. Conclusions Our findings indicate that UPP may participate in the ERS-induced AECII apoptosis under hyperoxia condition. Supplementary Information The online version contains supplementary material available at 10.1186/s12890-021-01751-9.
Collapse
Affiliation(s)
- Yue Zhu
- Department of Pediatrics, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212000, People's Republic of China
| | - Huimin Ju
- Department of Pediatrics, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212000, People's Republic of China
| | - Hongyan Lu
- Department of Pediatrics, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212000, People's Republic of China.
| | - Wei Tang
- Department of Pediatrics, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212000, People's Republic of China
| | - Junying Lu
- Department of Pediatrics, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212000, People's Republic of China
| | - Qiuxia Wang
- Department of Pediatrics, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212000, People's Republic of China
| |
Collapse
|
12
|
Oxidative Stress Promotes Corticosteroid Insensitivity in Asthma and COPD. Antioxidants (Basel) 2021; 10:antiox10091335. [PMID: 34572965 PMCID: PMC8471691 DOI: 10.3390/antiox10091335] [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: 07/30/2021] [Revised: 08/18/2021] [Accepted: 08/23/2021] [Indexed: 02/06/2023] Open
Abstract
Corticosteroid insensitivity is a key characteristic of patients with severe asthma and COPD. These individuals experience greater pulmonary oxidative stress and inflammation, which contribute to diminished lung function and frequent exacerbations despite the often and prolonged use of systemic, high dose corticosteroids. Reactive oxygen and nitrogen species (RONS) promote corticosteroid insensitivity by disrupting glucocorticoid receptor (GR) signaling, leading to the sustained activation of pro-inflammatory pathways in immune and airway structural cells. Studies in asthma and COPD models suggest that corticosteroids need a balanced redox environment to be effective and to reduce airway inflammation. In this review, we discuss how oxidative stress contributes to corticosteroid insensitivity and the importance of optimizing endogenous antioxidant responses to enhance corticosteroid sensitivity. Future studies should aim to identify how antioxidant-based therapies can complement corticosteroids to reduce the need for prolonged high dose regimens in patients with severe asthma and COPD.
Collapse
|
13
|
Pao HP, Liao WI, Tang SE, Wu SY, Huang KL, Chu SJ. Suppression of Endoplasmic Reticulum Stress by 4-PBA Protects Against Hyperoxia-Induced Acute Lung Injury via Up-Regulating Claudin-4 Expression. Front Immunol 2021; 12:674316. [PMID: 34122432 PMCID: PMC8194262 DOI: 10.3389/fimmu.2021.674316] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 05/10/2021] [Indexed: 12/20/2022] Open
Abstract
Endoplasmic reticulum (ER) stress that disrupts ER function can occur in response to a wide variety of cellular stress factors leads to the accumulation of unfolded and misfolded proteins in the ER. Many studies have shown that ER stress amplified inflammatory reactions and was involved in various inflammatory diseases. However, little is known regarding the role of ER stress in hyperoxia-induced acute lung injury (HALI). This study investigated the influence of ER stress inhibitor, 4-phenyl butyric acid (4-PBA), in mice with HALI. Treatment with 4-PBA in the hyperoxia groups significantly prolonged the survival, decreased lung edema, and reduced the levels of inflammatory mediators, lactate dehydrogenase, and protein in bronchoalveolar lavage fluid, and increased claudin-4 protein expression in lung tissue. Moreover, 4-PBA reduced the ER stress-related protein expression, NF-κB activation, and apoptosis in the lung tissue. In in vitro study, 4-PBA also exerted a similar effect in hyperoxia-exposed mouse lung epithelial cells (MLE-12). However, when claudin-4 siRNA was administrated in mice and MLE-12 cells, the protective effect of 4-PBA was abrogated. These results suggested that 4-PBA protected against hyperoxia-induced ALI via enhancing claudin-4 expression.
Collapse
Affiliation(s)
- Hsin-Ping Pao
- The Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Wen-I Liao
- Department of Emergency Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Shih-En Tang
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan.,Institute of Aerospace and Undersea Medicine, National Defense Medical Center, Taipei, Taiwan
| | - Shu-Yu Wu
- Institute of Aerospace and Undersea Medicine, National Defense Medical Center, Taipei, Taiwan
| | - Kun-Lun Huang
- The Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Shi-Jye Chu
- Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| |
Collapse
|
14
|
Wen X, Zhang H, Xiang B, Zhang W, Gong F, Li S, Chen H, Luo X, Deng J, You Y, Hu Z, Jiang C. Hyperoxia-induced miR-342-5p down-regulation exacerbates neonatal bronchopulmonary dysplasia via the Raf1 regulator Spred3. Br J Pharmacol 2021; 178:2266-2283. [PMID: 33434946 DOI: 10.1111/bph.15371] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 12/10/2020] [Accepted: 01/01/2021] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND AND PURPOSE Bronchopulmonary dysplasia (BPD) is the most prevalent chronic paediatric lung disease and is linked to the development of chronic obstructive pulmonary disease. MicroRNA-based regulation of type II alveolar epithelial cell (T2AEC) proliferation and apoptosis is an important factor in the pathogenesis of BPD and warrants further investigation. EXPERIMENTAL APPROACH Two murine models of hyperoxic lung injury (with or without miR-342-5p or Sprouty-related, EVH1 domain-containing protein 3 [Spred3] modulation) were employed: a hyperoxia-induced acute lung injury model (100% O2 on postnatal days 1-7) and the BPD model (100% O2 on postnatal days 1-4, followed by room air for 10 days). Tracheal aspirate pellets from healthy control and moderate/severe BPD neonates were randomly selected for clinical miR-342-5p analysis. KEY RESULTS Hyperoxia decreased miR-342-5p levels in primary T2AECs, MLE12 cells and neonatal mouse lungs. Transgenic miR-342 overexpression in neonatal mice ameliorated survival rates and improved the BPD phenotype and BPD-associated pulmonary arterial hypertension (PAH). T2AEC-specific miR-342 transgenic overexpression, as well as miR-342-5p mimic therapy, also ameliorated the BPD phenotype and associated PAH. miR-342-5p targets the 3'UTR of the Raf1 regulator Spred3, inhibiting Spred3 expression. Treatment with recombinant Spred3 exacerbated the BPD phenotype and associated PAH. Notably, miR-342-5p inhibition under room air conditions did not mimic the BPD phenotype. Moderate/severe BPD tracheal aspirate pellets exhibited decreased miR-342-5p levels relative to healthy control pellets. CONCLUSION AND IMPLICATIONS These findings suggest that miR-342-5p mimic therapy may show promise in the treatment or prevention of BPD.
Collapse
Affiliation(s)
- Xin Wen
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Hui Zhang
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Bo Xiang
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Weiyu Zhang
- Department of Pediatrics, Chongqing Jiulongpo District Maternity Child Health Care Hospital, Chongqing, China
| | - Fang Gong
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Shiling Li
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Hongyan Chen
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Xuan Luo
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Juan Deng
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Yaoyao You
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Zhangxue Hu
- Department of Pediatrics, Army Medical Center, Army Medical University, Chongqing, China
| | - Changke Jiang
- Department of Pediatrics, Chongqing Yongchuan District Maternity Child Health Care Hospital, Chongqing, China.,Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| |
Collapse
|
15
|
Siddaiah R, Oji-Mmuo CN, Montes DT, Fuentes N, Spear D, Donnelly A, Silveyra P. MicroRNA Signatures Associated with Bronchopulmonary Dysplasia Severity in Tracheal Aspirates of Preterm Infants. Biomedicines 2021; 9:biomedicines9030257. [PMID: 33807742 PMCID: PMC8000397 DOI: 10.3390/biomedicines9030257] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 02/26/2021] [Accepted: 03/01/2021] [Indexed: 12/04/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a form of chronic lung disease that develops in neonates as a consequence of preterm birth, arrested fetal lung development, and inflammation. The incidence of BPD remains on the rise as a result of increasing survival of extremely preterm infants. Severe BPD contributes to significant health care costs and is associated with prolonged hospitalizations, respiratory infections, and neurodevelopmental deficits. In this study, we aimed to detect novel biomarkers of BPD severity. We collected tracheal aspirates (TAs) from preterm babies with mild/moderate (n = 8) and severe (n = 17) BPD, and we profiled the expression of 1048 miRNAs using a PCR array. Associations with biological pathways were determined with the Ingenuity Pathway Analysis (IPA) software. We found 31 miRNAs differentially expressed between the two disease groups (2-fold change, false discovery rate (FDR) < 0.05). Of these, 4 miRNAs displayed significantly higher expression levels, and 27 miRNAs had significantly lower expression levels in the severe BPD group when compared to the mild/moderate BPD group. IPA identified cell signaling and inflammation pathways associated with miRNA signatures. We conclude that TAs of extremely premature infants contain miRNA signatures associated with severe BPD. These may serve as potential biomarkers of disease severity in infants with BPD.
Collapse
Affiliation(s)
- Roopa Siddaiah
- Department of Pediatrics, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (R.S.); (C.N.O.-M.); (D.S.); (A.D.)
| | - Christiana N. Oji-Mmuo
- Department of Pediatrics, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (R.S.); (C.N.O.-M.); (D.S.); (A.D.)
| | - Deborah T. Montes
- Biobehavioral Laboratory, School of Nursing, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA;
| | - Nathalie Fuentes
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA;
| | - Debra Spear
- Department of Pediatrics, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (R.S.); (C.N.O.-M.); (D.S.); (A.D.)
| | - Ann Donnelly
- Department of Pediatrics, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (R.S.); (C.N.O.-M.); (D.S.); (A.D.)
| | - Patricia Silveyra
- Department of Pediatrics, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (R.S.); (C.N.O.-M.); (D.S.); (A.D.)
- Biobehavioral Laboratory, School of Nursing, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA;
- Department of Environmental and Occupational Health, School of Public Health, Indiana University, Bloomington, IN 47405, USA
- Correspondence:
| |
Collapse
|
16
|
Schappell LE, Minahan DJ, Gleghorn JP. A Microfluidic System to Measure Neonatal Lung Compliance Over Late Stage Development as a Functional Measure of Lung Tissue Mechanics. J Biomech Eng 2020; 142:100803. [PMID: 32391560 PMCID: PMC7477712 DOI: 10.1115/1.4047133] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 04/07/2020] [Indexed: 11/08/2022]
Abstract
Premature birth interrupts the development of the lung, resulting in functional deficiencies and the onset of complex pathologies, like bronchopulmonary dysplasia (BPD), that further decrease the functional capabilities of the immature lung. The dysregulation of molecular targets has been implicated in the presentation of BPD, but there is currently no method to correlate resultant morphological changes observed in tissue histology with these perturbations to differences in function throughout saccular and alveolar lung development. Lung compliance is an aggregate measure of the lung's mechanical properties that is highly sensitive to a number of molecular, cellular, and architectural characteristics, but little is known about compliance in the neonatal mouse lung due to measurement challenges. We have developed a novel method to quantify changes in lung volume and pressure to determine inspiratory and expiratory compliance throughout neonatal mouse lung development. The compliance measurements obtained were validated against compliance values from published studies using mature lungs following enzymatic degradation of the extracellular matrix (ECM). The system was then used to quantify changes in compliance that occurred over the entire span of neonatal mouse lung development. These methods fill a critically important gap connecting powerful mouse models of development and disease to measures of functional lung mechanics critical to respiration and enable insights into the genetic, molecular, and cellular underpinnings of BPD pathology to improve lung function in premature infants.
Collapse
Affiliation(s)
- Laurel E. Schappell
- Department of Biomedical Engineering, University of Delaware, 161 Colburn Lab., Newark, DE 19716
| | - Daniel J. Minahan
- Department of Biomedical Engineering, University of Delaware, 161 Colburn Lab., Newark, DE 19716
| | - Jason P. Gleghorn
- Department of Biomedical Engineering, University of Delaware, 161 Colburn Lab., Newark, DE 19716
| |
Collapse
|
17
|
Baghaki S, Yalcin CE, Baghaki HS, Aydin SY, Daghan B, Yavuz E. COX2 inhibition in the treatment of COVID-19: Review of literature to propose repositioning of celecoxib for randomized controlled studies. Int J Infect Dis 2020; 101:29-32. [PMID: 33007455 PMCID: PMC7525269 DOI: 10.1016/j.ijid.2020.09.1466] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 09/23/2020] [Accepted: 09/24/2020] [Indexed: 12/14/2022] Open
Abstract
Coronavirus-triggered pulmonary and systemic disease, i.e. systemic inflammatory response to virally triggered lung injury, named COVID-19, and ongoing discussions on refining immunomodulation in COVID-19 without COX2 inhibition prompted us to search the related literature to show a potential target (COX2) and a weapon (celecoxib). The concept of selectively targeting COX2 and closely related cascades might be worth trying in the treatment of COVID-19 given the substantial amount of data showing that COX2, p38 MAPK, IL-1b, IL-6 and TGF-β play pivotal roles in coronavirus-related cell death, cytokine storm and pulmonary interstitial fibrosis. Considering the lack of definitive treatment and importance of immunomodulation in COVID-19, COX2 inhibition might be a valuable adjunct to still-evolving treatment strategies. Celecoxib has properties that should be evaluated in randomized controlled studies and is also available for off-label use.
Collapse
Affiliation(s)
- Semih Baghaki
- Istanbul University Cerrahpasa - Cerrahpasa Medical Faculty, Department of Plastic, Reconstructive and Aesthetic Surgery, Istanbul, Turkey.
| | - Can Ege Yalcin
- Istanbul University Cerrahpasa - Cerrahpasa Medical Faculty, Department of Plastic, Reconstructive and Aesthetic Surgery, Istanbul, Turkey
| | - Hayriye Sema Baghaki
- Bakirkoy Sadi Konuk Research and Training Hospital, Department of Obstetrics and Gynecology, Istanbul, Turkey
| | - Servet Yekta Aydin
- Istanbul University Cerrahpasa - Cerrahpasa Medical Faculty, Department of Plastic, Reconstructive and Aesthetic Surgery, Istanbul, Turkey
| | - Basak Daghan
- Istanbul University Cerrahpasa - Cerrahpasa Medical Faculty, Department of Plastic, Reconstructive and Aesthetic Surgery, Istanbul, Turkey
| | - Ersin Yavuz
- Istanbul University Cerrahpasa - Cerrahpasa Medical Faculty, Department of Plastic, Reconstructive and Aesthetic Surgery, Istanbul, Turkey
| |
Collapse
|
18
|
Prevention of Oxygen-Induced Inflammatory Lung Injury by Caffeine in Neonatal Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:3840124. [PMID: 32831996 PMCID: PMC7429812 DOI: 10.1155/2020/3840124] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/15/2020] [Accepted: 07/18/2020] [Indexed: 12/26/2022]
Abstract
Background Preterm birth implies an array of respiratory diseases including apnea of prematurity and bronchopulmonary dysplasia (BPD). Caffeine has been introduced to treat apneas but also appears to reduce rates of BPD. Oxygen is essential when treating preterm infants with respiratory problems but high oxygen exposure aggravates BPD. This experimental study is aimed at investigating the action of caffeine on inflammatory response and cell death in pulmonary tissue in a hyperoxia-based model of BPD in the newborn rat. Material/Methods. Lung injury was induced by hyperoxic exposure with 80% oxygen for three (P3) or five (P5) postnatal days with or without recovery in ambient air until postnatal day 15 (P15). Newborn Wistar rats were treated with PBS or caffeine (10 mg/kg) every two days beginning at the day of birth. The effects of caffeine on hyperoxic-induced pulmonary inflammatory response were examined at P3 and P5 immediately after oxygen exposure or after recovery in ambient air (P15) by immunohistological staining and analysis of lung homogenates by ELISA and qPCR. Results Treatment with caffeine significantly attenuated changes in hyperoxia-induced cell death and apoptosis-associated factors. There was a significant decrease in proinflammatory mediators and redox-sensitive transcription factor NFκB in the hyperoxia-exposed lung tissue of the caffeine-treated group compared to the nontreated group. Moreover, treatment with caffeine under hyperoxia modulated the transcription of the adenosine receptor (Adora)1. Caffeine induced pulmonary chemokine and cytokine transcription followed by immune cell infiltration of alveolar macrophages as well as increased adenosine receptor (Adora1, 2a, and 2b) expression. Conclusions The present study investigating the impact of caffeine on the inflammatory response, pulmonary cell degeneration and modulation of adenosine receptor expression, provides further evidence that caffeine acts as an antioxidative and anti-inflammatory drug for experimental oxygen-mediated lung injury. Experimental studies may broaden the understanding of therapeutic use of caffeine in modulating detrimental mechanisms involved in BPD development.
Collapse
|
19
|
Das P, Acharya S, Shah D, Agarwal B, Prahaladan V, Bhandari V. Chitin Analog AVR-25 Prevents Experimental Bronchopulmonary Dysplasia. J Pediatr Intensive Care 2020; 9:225-232. [PMID: 32685255 DOI: 10.1055/s-0040-1709994] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 03/27/2020] [Indexed: 12/12/2022] Open
Abstract
Infants born extremely preterm are at a high risk of developing bronchopulmonary dysplasia (BPD) which is characterized by large, simplified alveoli, increased inflammation, disrupted and dysregulated vasculogenesis, decreased cell proliferation, and increased cell death in the lungs. Due to lack of specific drug treatments to combat this condition, BPD and its long-term complications have taken a significant toll of healthcare resources. AVR-25, a novel immune modulator experimental compound, was able to partially recover the pulmonary phenotype in the hyperoxia-induced experimental mouse model of BPD. We anticipate that AVR-25 will have therapeutic potential for managing human BPD.
Collapse
Affiliation(s)
- Pragnya Das
- Department of Pediatrics, Division of Neonatology, Drexel University, Philadelphia, Pennsylvania, United States
| | - Suchismita Acharya
- Acceleration Laboratory, University of North Texas Health Science Center, Fort Worth, Texas, United States.,AyuVis Research Inc, Fort Worth, Texas, United States
| | - Dilip Shah
- Department of Pediatrics, Division of Neonatology, Drexel University, Philadelphia, Pennsylvania, United States
| | | | - Varsha Prahaladan
- Department of Pediatrics, Division of Neonatology, Drexel University, Philadelphia, Pennsylvania, United States
| | - Vineet Bhandari
- Department of Pediatrics, Division of Neonatology, Drexel University, Philadelphia, Pennsylvania, United States
| |
Collapse
|
20
|
Das P, Curstedt T, Agarwal B, Prahaladan VM, Ramirez J, Bhandari S, Syed MA, Salomone F, Casiraghi C, Pelizzi N, Bhandari V. Small Molecule Inhibitor Adjuvant Surfactant Therapy Attenuates Ventilator- and Hyperoxia-Induced Lung Injury in Preterm Rabbits. Front Physiol 2020; 11:266. [PMID: 32327998 PMCID: PMC7160647 DOI: 10.3389/fphys.2020.00266] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 03/09/2020] [Indexed: 12/15/2022] Open
Abstract
Background Invasive mechanical ventilation (IMV) has become one of the mainstays of therapy in NICUs worldwide, as a result of which premature babies with extremely low birth weight have been able to survive. Although lifesaving, IMV can result in lung inflammation and injury. Surfactant therapy is considered a standard of care in preterm infants with immature lungs. Recently, small molecule inhibitors like siRNAs and miRNAs have been used for therapeutic purposes. Ddit3 (CHOP), Ang2 and miR34a are known to be upregulated in experimental lung injury. We wanted to test whether inhibitors for these molecules (CHOP siRNA, Ang2 siRNA, and miR34a antagomir) if used alone or with a combination with surfactant (Curosurf®) would help in reducing ventilation and hyperoxia-induced injury in an experimental lung injury model. Methods Preterm rabbits born by cesarean section were intratracheally instilled with the three small molecule inhibitors with or without Curosurf® prior to IMV and hyperoxia exposure. Prior to testing the inhibitors in rabbits, these small molecule inhibitors were transfected in mouse lung epithelial cells (MLE12 and AECII) and delivered to neonatal mouse pups intranasally as a proof of concept that surfactant (Curosurf®) could be used as an effective vehicle for administration of such drugs. Survival, pulmonary function tests, histopathology, immunostaining, quantitative PCR and western blotting were done to see the adjuvant effect of surfactant with these three small molecule inhibitors. Results Our data shows that Curosurf® can facilitate transfection of small molecules in MLE12 cells with the same and/or increased efficiency as Lipofectamine. Surfactant given alone or as an adjuvant with small molecule inhibitors increases survival, decreases IMV and hyperoxia-induced inflammation, improves pulmonary function and lung injury scores in preterm rabbit kits. Conclusion Our study shows that Curosurf® can be used successfully as an adjuvant therapy with small molecule inhibitors for CHOP/Ang2/miR34a. In this study, of the three inhibitors used, miR34a inhibitor seemed to be the most promising compound to combat IMV and hyperoxia-induced lung injury in preterm rabbits.
Collapse
Affiliation(s)
- Pragnya Das
- Department of Pediatrics, Drexel University, Philadelphia, PA, United States
| | - Tore Curstedt
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | | | - Varsha M Prahaladan
- Department of Pediatrics, Drexel University, Philadelphia, PA, United States
| | - John Ramirez
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT, United States
| | - Shreya Bhandari
- Department of Pediatrics, Drexel University, Philadelphia, PA, United States
| | - Mansoor A Syed
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT, United States
| | | | | | | | - Vineet Bhandari
- Department of Pediatrics, Drexel University, Philadelphia, PA, United States.,Department of Pediatrics, Yale University School of Medicine, New Haven, CT, United States
| |
Collapse
|
21
|
Alam MA, Betal SGN, Aghai ZH, Bhandari V. Hyperoxia causes miR199a-5p-mediated injury in the developing lung. Pediatr Res 2019; 86:579-588. [PMID: 31390652 DOI: 10.1038/s41390-019-0524-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 05/20/2019] [Accepted: 07/20/2019] [Indexed: 11/09/2022]
Abstract
BACKGROUND Hyperoxia-induced acute lung injury (HALI) is characterized by increased permeability and infiltration of inflammatory cells, impairment of alveolar development, and compromised lung function. Recent evidence has determined that microRNAs (miRs) are implicated in hyperoxia-induced lung injury, including bronchopulmonary dysplasia (BPD). However, the expression profile and functional role of miR199a-5p in developing lungs have not been reported. METHODS The present study was undertaken to explore the role of miR199a-5p in developing mice lungs and human neonates. We exposed neonatal mice for 7 days, mouse lung epithelial cells (MLE12), mouse lung endothelial cells (MLECs), and macrophages (RAW246.7), to hyperoxia at different time points. RESULTS Our results demonstrated enhanced miR199a-5p expression in hyperoxia-exposed mice lungs and cells, as well as in tracheal aspirates of infants developing BPD, with significant reduction in the expression of its target, caveolin-1. Next, we observed that miR199a-5p-mimic worsens HALI as evidenced by increased inflammatory cells, cytokines, and lung vascular markers. Conversely, miR199a-5p-inhibitor treatment attenuated HALI. CONCLUSION Thus, our findings suggest that miR199a-5p is a potential target for attenuating HALI pathophysiology in the developing lung. Moreover, miR199a-5p-inhibitor could be part of a novel therapeutic strategy for improving BPD in preterm neonates.
Collapse
Affiliation(s)
- Mohammad Afaque Alam
- Department of Pediatrics, Division of Neonatology, Drexel University College of Medicine, Philadelphia, PA, USA.,Department of Neurosciences, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA
| | - Suhita Gayen Nee Betal
- Department of Pediatrics, Division of Neonatology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Zubair H Aghai
- Department of Pediatrics, Division of Neonatology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Vineet Bhandari
- Department of Pediatrics, Division of Neonatology, Drexel University College of Medicine, Philadelphia, PA, USA.
| |
Collapse
|
22
|
You K, Parikh P, Khandalavala K, Wicher SA, Manlove L, Yang B, Roesler A, Roos BB, Teske JJ, Britt RD, Pabelick CM, Prakash YS. Moderate hyperoxia induces senescence in developing human lung fibroblasts. Am J Physiol Lung Cell Mol Physiol 2019; 317:L525-L536. [PMID: 31411059 DOI: 10.1152/ajplung.00067.2019] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Hyperoxia exposure in premature infants increases the risk of subsequent lung diseases, such as asthma and bronchopulmonary dysplasia. Fibroblasts help maintain bronchial and alveolar integrity. Thus, understanding mechanisms by which hyperoxia influences fibroblasts is critical. Cellular senescence is increasingly recognized as important to the pathophysiology of multiple diseases. We hypothesized that clinically relevant moderate hyperoxia (<50% O2) induces senescence in developing fibroblasts. Using primary human fetal lung fibroblasts, we investigated effects of 40% O2 on senescence, endoplasmic reticulum (ER) stress, and autophagy pathways. Fibroblasts were exposed to 21% or 40% O2 for 7 days with etoposide as a positive control to induce senescence, evaluated by morphological changes, β-galactosidase activity, and DNA damage markers. Senescence-associated secretory phenotype (SASP) profile of inflammatory and profibrotic markers was further assessed. Hyperoxia decreased proliferation but increased cell size. SA-β-gal activity and DNA damage response, cell cycle arrest in G2/M phase, and marked upregulation of phosphorylated p53 and p21 were noted. Reduced autophagy was noted with hyperoxia. mRNA expression of proinflammatory and profibrotic factors (TNF-α, IL-1, IL-8, MMP3) was elevated by hyperoxia or etoposide. Hyperoxia increased several SASP factors (PAI-1, IL1-α, IL1-β, IL-6, LAP, TNF-α). The secretome of senescent fibroblasts promoted extracellular matrix formation by naïve fibroblasts. Overall, we demonstrate that moderate hyperoxia enhances senescence in primary human fetal lung fibroblasts with reduced autophagy but not enhanced ER stress. The resulting SASP is profibrotic and may contribute to abnormal repair in the lung following hyperoxia.
Collapse
Affiliation(s)
- Kai You
- Department of Neonatology, Shengjing Hospital of China Medical University, Shenyang City, China.,Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota.,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - Pavan Parikh
- Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota
| | - Karl Khandalavala
- Department of Neonatology, Shengjing Hospital of China Medical University, Shenyang City, China
| | - Sarah A Wicher
- Department of Neonatology, Shengjing Hospital of China Medical University, Shenyang City, China
| | - Logan Manlove
- Department of Neonatology, Shengjing Hospital of China Medical University, Shenyang City, China
| | - Binxia Yang
- Department of Neonatology, Shengjing Hospital of China Medical University, Shenyang City, China
| | - Annie Roesler
- Department of Neonatology, Shengjing Hospital of China Medical University, Shenyang City, China
| | - Ben B Roos
- Department of Neonatology, Shengjing Hospital of China Medical University, Shenyang City, China
| | - Jacob J Teske
- Department of Neonatology, Shengjing Hospital of China Medical University, Shenyang City, China
| | - Rodney D Britt
- Center for Perinatal Research, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio.,Department of Pediatrics, The Ohio State University, Columbus, Ohio
| | - Christina M Pabelick
- Department of Neonatology, Shengjing Hospital of China Medical University, Shenyang City, China.,Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota
| | - Y S Prakash
- Department of Neonatology, Shengjing Hospital of China Medical University, Shenyang City, China.,Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota
| |
Collapse
|
23
|
Groenendyk J, Fan X, Peng Z, Kurgan L, Michalak M. Endoplasmic reticulum and the microRNA environment in the cardiovascular system 1. Can J Physiol Pharmacol 2019; 97:515-527. [PMID: 31063413 DOI: 10.1139/cjpp-2018-0720] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Stress responses are important to human physiology and pathology, and the inability to adapt to cellular stress leads to cell death. To mitigate cellular stress and re-establish homeostasis, cells, including those in the cardiovascular system, activate stress coping response mechanisms. The endoplasmic reticulum, a component of the cellular reticular network in cardiac cells, mobilizes so-called endoplasmic reticulum stress coping responses, such as the unfolded protein response. MicroRNAs play an important part in the maintenance of cellular and tissue homeostasis, perform a central role in the biology of the cardiac myocyte, and are involved in pathological cardiac function and remodeling. In this paper, we review a link between endoplasmic reticulum homeostasis and microRNA with an emphasis on the impact on stress responses in the cardiovascular system.
Collapse
Affiliation(s)
- Jody Groenendyk
- a Department of Biochemistry, University of Alberta, Edmonton, AB T6G 2S7, Canada
| | - Xiao Fan
- b Irving Medical Center, Columbia University, New York, NY 10032, USA
| | - Zhenling Peng
- c Center for Applied Mathematics, Tianjin University, Tianjin 300072, China
| | - Lukasz Kurgan
- d Department of Computer Science, Virginia Commonwealth University, Richmond, VA 23284, USA.,e Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 2V4, Canada
| | - Marek Michalak
- a Department of Biochemistry, University of Alberta, Edmonton, AB T6G 2S7, Canada
| |
Collapse
|
24
|
Eldredge LC, Creasy RS, Tanaka S, Lai JF, Ziegler SF. Imbalance of Ly-6C hi and Ly-6C lo Monocytes/Macrophages Worsens Hyperoxia-Induced Lung Injury and Is Rescued by IFN-γ. THE JOURNAL OF IMMUNOLOGY 2019; 202:2772-2781. [PMID: 30944158 DOI: 10.4049/jimmunol.1801374] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 03/04/2019] [Indexed: 11/19/2022]
Abstract
Inflammation in response to oxygen exposure is a major contributing factor in neonatal lung injury leading to bronchopulmonary dysplasia. Although increased levels of proinflammatory cytokines are seen in airway samples and blood from bronchopulmonary dysplasia patients, the innate immune responses in this common neonatal lung condition have not been well characterized. We previously reported that depletion of murine CD11b-expressing mononuclear phagocytes at birth led to severe acute hyperoxia-induced lung injury (HILI) and significant mortality. In this study, we further define the mononuclear phagocyte populations that are present in the neonatal lung and characterize their responses to hyperoxia exposure. We used myeloid depleter mice (CD11b-DTR and CCR2-DTR) to contrast the effects of depleting different monocyte/macrophage subpopulations on the innate immune response to hyperoxia. Using RNA sequencing and subsequent data analysis, we identified an IFN-γ-mediated role for interstitial monocytes/macrophages in acute HILI, in which decreased IFN-γ expression led to increased disease severity and increased Mmp9 mRNA expression. Importantly, intranasal administration of rIFN-γ largely rescued CD11b-DTR+ mice from severe HILI and decreased Mmp9 mRNA expression in Ly-6Clo and Ly-6Chi interstitial monocyte/macrophages. We conclude that the proinflammatory effects of hyperoxia exposure are, at least in part, because of the modulation of effectors downstream of IFN-γ by pulmonary monocytes/macrophages.
Collapse
Affiliation(s)
- Laurie C Eldredge
- Division of Pulmonology, Department of Pediatrics, University of Washington and Seattle Children's Hospital, Seattle, WA 98105.,Center for Clinical and Translational Research, Seattle Children's Research Institute, Seattle, WA 98121; and.,Immunology Program, Benaroya Research Institute, Seattle, WA 98101
| | - Rane S Creasy
- Immunology Program, Benaroya Research Institute, Seattle, WA 98101
| | - Shigeru Tanaka
- Immunology Program, Benaroya Research Institute, Seattle, WA 98101
| | - Jen-Feng Lai
- Immunology Program, Benaroya Research Institute, Seattle, WA 98101
| | - Steven F Ziegler
- Immunology Program, Benaroya Research Institute, Seattle, WA 98101
| |
Collapse
|
25
|
Liu D, Wang Y, Li L, Zhao H, Li L, Liu Y, Jiang H, Li X, Zhang R. Celecoxib Protects Hyperoxia-Induced Lung Injury via NF-κB and AQP1. Front Pediatr 2019; 7:228. [PMID: 31231624 PMCID: PMC6568051 DOI: 10.3389/fped.2019.00228] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 05/21/2019] [Indexed: 12/13/2022] Open
Abstract
Objective: There is an increasing incidence of bronchopulmonary dysplasia (BDP) in preterm infants in China, which is the key issue affecting their survival rate and life quality. This study was performed to better understand the mechanism of protective effect of celecoxib on hyperoxia induced injury. Methods: Hyperoxia BPD model was established using newborn Sprague-Dawley (SD) rats exposed to high O2 level (85%). Celecoxib treatment was also conducted. Histology of lung tissue samples were analyzed. Functional studies were systematically performed using the lung tissues and A549 cells. Results: Hyperoxia disrupted lung development in SD rats. Celecoxib alleviated the damaged lung development. NF-κB and Aquaporin (AQP) 1 were identified as the pathways in the hyperoxia-induced lung injury. We have shown that hyperoxia activated NF-κB pathway through increased nucleus translocation and repressed AQP1 expression. On the contrary, celecoxib inhibited NF-κB phosphorylation and nucleus translocation and increased AQP1 expression through inhibiting COX2 activity. Additionally, celecoxib also rescued apoptosis induced by hyperoxia. Conclusion: Our study identified NF-κB and AQP1 as the pathways in the hyperoxia-induced lung injury in the hyperoxia BPD model SD rats and it provided a better understanding of the protective effect of celecoxib. It suggests NF-κB and AQP1 may be as potential targets for treating newborns with BPD.
Collapse
Affiliation(s)
- Dongyun Liu
- Neonatal Intensive Care Unit, The Affiliated Hospital of QingDao University, Qingdao, China
| | - Yuguang Wang
- Pediatric Department, Liaocheng City People's Hospital, Liaocheng, China
| | - Lili Li
- Neonatal Intensive Care Unit, The Affiliated Hospital of QingDao University, Qingdao, China
| | - Han Zhao
- Department of Pathology, The Affiliated Hospital of QingDao University, Qingdao, China
| | - Liangliang Li
- Neonatal Intensive Care Unit, The Affiliated Hospital of QingDao University, Qingdao, China
| | - Yan Liu
- Neonatal Intensive Care Unit, The Affiliated Hospital of QingDao University, Qingdao, China
| | - Hong Jiang
- Neonatal Intensive Care Unit, The Affiliated Hospital of QingDao University, Qingdao, China
| | - Xianghong Li
- Neonatal Intensive Care Unit, The Affiliated Hospital of QingDao University, Qingdao, China
| | - Rui Zhang
- Neonatal Intensive Care Unit, The Affiliated Hospital of QingDao University, Qingdao, China
| |
Collapse
|
26
|
Abstract
Bronchopulmonary dysplasia (BPD) continues to be one of the most common complications of preterm birth and is characterized histopathologically by impaired lung alveolarization. Extremely preterm born infants remain at high risk for the development of BPD, highlighting a pressing need for continued efforts to understand the pathomechanisms at play in affected infants. This brief review summarizes recent progress in our understanding of the how the development of the newborn lung is stunted, highlighting recent reports on roles for growth factor signaling, oxidative stress, inflammation, the extracellular matrix and proteolysis, non-coding RNA, and fibroblast and epithelial cell plasticity. Additionally, some concerns about modeling BPD in experimental animals are reviewed, as are new developments in the in vitro modeling of pathophysiological processes relevant to impaired lung alveolarization in BPD.
Collapse
Affiliation(s)
- Rory E Morty
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany.
| |
Collapse
|
27
|
Olave N, Lal CV, Halloran B, Bhandari V, Ambalavanan N. Iloprost attenuates hyperoxia-mediated impairment of lung development in newborn mice. Am J Physiol Lung Cell Mol Physiol 2018; 315:L535-L544. [PMID: 29952221 PMCID: PMC6230878 DOI: 10.1152/ajplung.00125.2017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 05/21/2018] [Accepted: 06/21/2018] [Indexed: 11/22/2022] Open
Abstract
Cyclooxygenase-2 (COX-2/PTGS2) mediates hyperoxia-induced impairment of lung development in newborn animals and is increased in the lungs of human infants with bronchopulmonary dysplasia (BPD). COX-2 catalyzes the production of cytoprotective prostaglandins, such as prostacyclin (PGI2), as well as proinflammatory mediators, such as thromboxane A2. Our objective was to determine whether iloprost, a synthetic analog of PGI2, would attenuate hyperoxia effects in the newborn mouse lung. To test this hypothesis, newborn C57BL/6 mice along with their dams were exposed to normoxia (21% O2) or hyperoxia (85% O2) from 4 to 14 days of age in combination with daily intraperitoneal injections of either iloprost 200 µg·kg-1·day-1, nimesulide (selective COX-2 antagonist) 100 mg·kg-1·day-1, or vehicle. Alveolar development was estimated by radial alveolar counts and mean linear intercepts. Lung function was determined on a flexiVent, and multiple cytokines and myeloperoxidase (MPO) were quantitated in lung homogenates. Lung vascular and microvascular morphometry was performed, and right ventricle/left ventricle ratios were determined. We determined that iloprost (but not nimesulide) administration attenuated hyperoxia-induced inhibition of alveolar development and microvascular density in newborn mice. Iloprost and nimesulide both attenuated hyperoxia-induced, increased lung resistance but did not improve lung compliance that was reduced by hyperoxia. Iloprost and nimesulide reduced hyperoxia-induced increases in MPO and some cytokines (IL-1β and TNF-α) but not others (IL-6 and KC/Gro). There were no changes in pulmonary arterial wall thickness or right ventricle/left ventricle ratios. We conclude that iloprost improves lung development and reduces lung inflammation in a newborn mouse model of BPD.
Collapse
Affiliation(s)
- Nelida Olave
- Department of Pediatrics, University of Alabama at Birmingham , Birmingham, Alabama
| | | | - Brian Halloran
- Department of Pediatrics, University of Alabama at Birmingham , Birmingham, Alabama
| | - Vineet Bhandari
- Department of Pediatrics, Drexel University College of Medicine , Philadelphia, Pennsylvania
| | | |
Collapse
|
28
|
Liu Y, Dong WB. [Preventive effect of caffeine on bronchopulmonary dysplasia in preterm infants]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2018; 20:598-602. [PMID: 30022766 PMCID: PMC7389204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 06/05/2018] [Indexed: 11/12/2023]
Abstract
With the increase in the rescue success rate of critically ill preterm infants and extremely preterm infants, the incidence rate of bronchopulmonary dysplasia (BPD) is increasing year by year. BPD has a high mortality rate and high possibility of sequelae, which greatly affects the quality of life of preterm infants and brings a heavy burden to their families, and so the treatment of BPD is of vital importance. At present, no consensus has been reached on the treatment measures for BPD. However, recent studies have shown that early application of caffeine can prevent BPD. With reference to the latest studies on the effect of caffeine in the prevention of BPD, this article reviews the mechanism of action of caffeine in reducing pulmonary inflammation, improving morphological abnormalities of lung injury, reducing oxidative stress injury, and improving pulmonary function.
Collapse
MESH Headings
- Animals
- Bronchopulmonary Dysplasia/genetics
- Bronchopulmonary Dysplasia/metabolism
- Bronchopulmonary Dysplasia/physiopathology
- Bronchopulmonary Dysplasia/prevention & control
- Caffeine/administration & dosage
- Humans
- Infant, Premature/growth & development
- Infant, Premature/metabolism
- Infant, Premature, Diseases/genetics
- Infant, Premature, Diseases/metabolism
- Infant, Premature, Diseases/physiopathology
- Infant, Premature, Diseases/prevention & control
- Oxidative Stress/drug effects
Collapse
Affiliation(s)
- Yang Liu
- Department of Neonatology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China.
| | | |
Collapse
|
29
|
Liu Y, Dong WB. [Preventive effect of caffeine on bronchopulmonary dysplasia in preterm infants]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2018; 20:598-602. [PMID: 30022766 PMCID: PMC7389204 DOI: 10.7499/j.issn.1008-8830.2018.07.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 06/05/2018] [Indexed: 06/08/2023]
Abstract
With the increase in the rescue success rate of critically ill preterm infants and extremely preterm infants, the incidence rate of bronchopulmonary dysplasia (BPD) is increasing year by year. BPD has a high mortality rate and high possibility of sequelae, which greatly affects the quality of life of preterm infants and brings a heavy burden to their families, and so the treatment of BPD is of vital importance. At present, no consensus has been reached on the treatment measures for BPD. However, recent studies have shown that early application of caffeine can prevent BPD. With reference to the latest studies on the effect of caffeine in the prevention of BPD, this article reviews the mechanism of action of caffeine in reducing pulmonary inflammation, improving morphological abnormalities of lung injury, reducing oxidative stress injury, and improving pulmonary function.
Collapse
MESH Headings
- Animals
- Bronchopulmonary Dysplasia/genetics
- Bronchopulmonary Dysplasia/metabolism
- Bronchopulmonary Dysplasia/physiopathology
- Bronchopulmonary Dysplasia/prevention & control
- Caffeine/administration & dosage
- Humans
- Infant, Premature/growth & development
- Infant, Premature/metabolism
- Infant, Premature, Diseases/genetics
- Infant, Premature, Diseases/metabolism
- Infant, Premature, Diseases/physiopathology
- Infant, Premature, Diseases/prevention & control
- Oxidative Stress/drug effects
Collapse
Affiliation(s)
- Yang Liu
- Department of Neonatology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China.
| | | |
Collapse
|
30
|
Chaubey S, Thueson S, Ponnalagu D, Alam MA, Gheorghe CP, Aghai Z, Singh H, Bhandari V. Early gestational mesenchymal stem cell secretome attenuates experimental bronchopulmonary dysplasia in part via exosome-associated factor TSG-6. Stem Cell Res Ther 2018; 9:173. [PMID: 29941022 PMCID: PMC6019224 DOI: 10.1186/s13287-018-0903-4] [Citation(s) in RCA: 134] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 04/25/2018] [Accepted: 05/13/2018] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Mesenchymal stem cells (MSCs) are promising tools for the treatment of human lung disease and other pathologies relevant to newborn medicine. Recent studies have established MSC exosomes (EXO), as one of the main therapeutic vectors of MSCs in mouse models of multifactorial chronic lung disease of preterm infants, bronchopulmonary dysplasia (BPD). However, the mechanisms underlying MSC-EXO therapeutic action are not completely understood. Using a neonatal mouse model of human BPD, we evaluated the therapeutic efficiency of early gestational age (GA) human umbilical cord (hUC)-derived MSC EXO fraction and its exosomal factor, tumor necrosis factor alpha-stimulated gene-6 (TSG-6). METHODS Conditioned media (CM) and EXO fractions were isolated from 25 and 30 weeks GA hUC-MSC cultures grown in serum-free media (SFM) for 24 h. Newborn mice were exposed to hyperoxia (> 95% oxygen) and were given intraperitoneal injections of MSC-CM or MSC-CM EXO fractions at postnatal (PN) day 2 and PN4. They were then returned to room air until PN14 (in a mouse model of severe BPD). The treatment regime was followed with (rh)TSG-6, TSG-6-neutralizing antibody (NAb), TSG-6 (si)RNA-transfected MSC-CM EXO and their appropriate controls. Echocardiography was done at PN14 followed by harvesting of lung, heart and brain for assessment of pathology parameters. RESULTS Systemic administration of CM or EXO in the neonatal BPD mouse model resulted in robust improvement in lung, cardiac and brain pathology. Hyperoxia-exposed BPD mice exhibited pulmonary inflammation accompanied by alveolar-capillary leakage, increased chord length, and alveolar simplification, which was ameliorated by MSC CM/EXO treatment. Pulmonary hypertension and right ventricular hypertrophy was also corrected. Cell death in brain was decreased and the hypomyelination reversed. Importantly, we detected TSG-6, an immunomodulatory glycoprotein, in EXO. Administration of TSG-6 attenuated BPD and its associated pathologies, in lung, heart and brain. Knockdown of TSG-6 by NAb or by siRNA in EXO abrogated the therapeutic effects of EXO, suggesting TSG-6 as an important therapeutic molecule. CONCLUSIONS Preterm hUC-derived MSC-CM EXO alleviates hyperoxia-induced BPD and its associated pathologies, in part, via exosomal factor TSG-6. The work indicates early systemic intervention with TSG-6 as a robust option for cell-free therapy, particularly for treating BPD.
Collapse
Affiliation(s)
- Sushma Chaubey
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, Drexel University College of Medicine, 245 N 15th Street, Philadelphia, PA, 19102, USA
| | - Sam Thueson
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, Drexel University College of Medicine, 245 N 15th Street, Philadelphia, PA, 19102, USA
| | - Devasena Ponnalagu
- Department of Pharmacology & Physiology, Drexel University College of Medicine, 245 N 15th Street, Philadelphia, PA, 19102, USA
| | - Mohammad Afaque Alam
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, Drexel University College of Medicine, 245 N 15th Street, Philadelphia, PA, 19102, USA
| | - Ciprian P Gheorghe
- Department of Obstetrics and Gynecology, Loma Linda University School of Medicine, 11370 Anderson Street, Loma Linda, CA, 92354, USA
| | - Zubair Aghai
- Divison of Neonatology, Department of Pediatrics, Thomas Jefferson University Hospital, 132S, 10th Street, Philadelphia, PA, 19107, USA
| | - Harpreet Singh
- Department of Pharmacology & Physiology, Drexel University College of Medicine, 245 N 15th Street, Philadelphia, PA, 19102, USA.,Department of Medicine, Division of Cardiology, Drexel University College of Medicine, 245 N 15th Street, Philadelphia, PA, 19102, USA
| | - Vineet Bhandari
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, Drexel University College of Medicine, 245 N 15th Street, Philadelphia, PA, 19102, USA.
| |
Collapse
|
31
|
Li M, Pan B, Shi Y, Fu J, Xue X. Increased expression of CHOP and LC3B in newborn rats with bronchopulmonary dysplasia. Int J Mol Med 2018; 42:1653-1665. [PMID: 29901175 DOI: 10.3892/ijmm.2018.3724] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 05/09/2018] [Indexed: 11/06/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) seriously affects the health and prognosis of children, but the efficacy of treatments is poor. The present study aimed to examine the effects of C/EBP homologous protein (CHOP), activating transcription factor 4 (ATF4) and microtubule‑associated protein light chain 3β (LC3B), and the interaction between CHOP and LC3B, in newborn rats with BPD. At 1, 7, 14 and 21 days, the rats in the model [fraction of inspired oxygen (FiO2)=80‑85%] and control groups (FiO2=21%) were randomly sacrificed, and lung samples were collected. Alveolar development was evaluated according to the radial alveolar count (RAC) and alveolar septum thickness. Ultrastructural changes were observed by transmission electron microscopy (TEM), the expression levels of CHOP, ATF4 and LC3B were determined by immunohistochemistry, and western blot and reverse transcription‑quantitative polymerase chain reaction analyses. The co‑localization of CHOP and LC3B in lung tissues was determined by immunofluorescence. The results showed that, compared with the control group, alveolarization arrest was present in the model group. The TEM observations revealed that, at 14 days, type II alveolar epithelial cell (AECII) lamellar bodies were damaged, with an apparent dilation of the endoplasmic reticulum (ER) and autophagy in cells within the model group. Between days 7 and 14, the protein levels of ATF4, CHOP and LC3B were significantly increased in the model group. The mRNA levels of CHOP and LC3B were lower at days 7‑21. CHOP and LC3B were co‑localized in the cells of the lung tissues at day 14 in the model group. Pearson's correlation analysis showed that the protein levels of CHOP and LC3B‑II were positively correlated in the model groups. As in previous studies, the present study demonstrated that BPD damaged the AECII cells, which exhibited detached and sparse microvilli and the vacuolization of lamellar bodies. In addition, it was found that the ER was dilated, with autophagosomes containing ER and other organelles in AECII cells; the expression levels of CHOP and LC3B‑II were upregulated. CHOP and LC3B‑II may have joint involvement in the occurrence and development of BPD.
Collapse
Affiliation(s)
- Mengyun Li
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Bingting Pan
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Yongyan Shi
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Jianhua Fu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Xindong Xue
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| |
Collapse
|
32
|
Bai YX, Fang F, Jiang JL, Xu F. Extrinsic Calcitonin Gene-Related Peptide Inhibits Hyperoxia-Induced Alveolar Epithelial Type II Cells Apoptosis, Oxidative Stress, and Reactive Oxygen Species (ROS) Production by Enhancing Notch 1 and Homocysteine-Induced Endoplasmic Reticulum Protein (HERP) Expression. Med Sci Monit 2017; 23:5774-5782. [PMID: 29206808 PMCID: PMC5728081 DOI: 10.12659/msm.904549] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background Lung alveolar epithelial type II cells (AEC II) are the most important stem cells in lung tissues, which are critical for wound repair of bronchopulmonary dysplasia (BPD). This study investigated the effects of calcitonin gene-related peptide (CGRP) on AEC II cells exposed to hyperoxia. Material/Methods Neonatal rat AEC II cells were isolated and identified by detecting surfactant protein C (SP-C). Three small interfering RNAs targeting Notch 1 were synthesized and transfected into AEC II. A hyperoxia-exposed AEC II cell injury model was established and was divided into 8 groups. MDA levels and SOD activity were examined using lipid peroxidation assay kits. Apoptosis and reactive oxygen species (ROS) production were evaluated using flow cytometry. Notch 1 mRNA expression was examined using RT-PCR. Homocysteine-induced endoplasmic reticulum protein (HERP) was examined using Western blot analysis. Results CGRP treatment significantly enhanced MDA levels and decreased SOD activity compared to hyperoxia-treated AEC II cells (P<0.05). CGRP treatment significantly inhibited hyperoxia-induced AEC II cell apoptosis, and significantly suppressed hyperoxia-induced ROS production compared to hyperoxia-treated AEC II cells (P<0.05) either undergoing γ secretase inhibitor or Notch RNA interference. CGRP significantly triggered Notch 1 mRNA expression and significantly enhanced HERP expression compared to hyperoxia-treated AEC II cells (P<0.05) either undergoing γ secretase inhibitor or Notch RNA interference. Conclusions In AEC II cells, extrinsic peptide CGRP suppressed hyperoxia-induced apoptosis, oxidative stress, and ROS production, which may be triggered by Notch 1 and HERP signaling pathway.
Collapse
Affiliation(s)
- Yu-Xin Bai
- Department of Critical Care, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, China (mainland).,Chongqing Key Laboratory of Pediatrics, Chongqing, China (mainland)
| | - Fang Fang
- Department of Critical Care, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, China (mainland).,Chongqing Key Laboratory of Pediatrics, Chongqing, China (mainland)
| | - Jia-Ling Jiang
- Department of Pediatrics, Inner Mongolia People's Hospital, Hohhot, Inner Mongolia, China (mainland)
| | - Feng Xu
- Department of Critical Care, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, China (mainland).,Chongqing Key Laboratory of Pediatrics, Chongqing, China (mainland)
| |
Collapse
|
33
|
Hyperoxia causes miR-34a-mediated injury via angiopoietin-1 in neonatal lungs. Nat Commun 2017; 8:1173. [PMID: 29079808 PMCID: PMC5660088 DOI: 10.1038/s41467-017-01349-y] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 09/11/2017] [Indexed: 01/07/2023] Open
Abstract
Hyperoxia-induced acute lung injury (HALI) is a key contributor to the pathogenesis of bronchopulmonary dysplasia (BPD) in neonates, for which no specific preventive or therapeutic agent is available. Here we show that lung micro-RNA (miR)-34a levels are significantly increased in lungs of neonatal mice exposed to hyperoxia. Deletion or inhibition of miR-34a improves the pulmonary phenotype and BPD-associated pulmonary arterial hypertension (PAH) in BPD mouse models, which, conversely, is worsened by miR-34a overexpression. Administration of angiopoietin-1, which is one of the downstream targets of miR34a, is able to ameliorate the BPD pulmonary and PAH phenotypes. Using three independent cohorts of human samples, we show that miR-34a expression is increased in type 2 alveolar epithelial cells in neonates with respiratory distress syndrome and BPD. Our data suggest that pharmacologic miR-34a inhibition may be a therapeutic option to prevent or ameliorate HALI/BPD in neonates.
Collapse
|
34
|
Rath P, Nardiello C, Morty RE. A new target for caffeine in the developing lung: endoplasmic reticulum stress? Am J Physiol Lung Cell Mol Physiol 2017; 313:L659-L663. [DOI: 10.1152/ajplung.00251.2017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 07/06/2017] [Accepted: 07/11/2017] [Indexed: 01/12/2023] Open
Affiliation(s)
- Philipp Rath
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and
| | - Claudio Nardiello
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, member of the German Center for Lung Research, Giessen, Germany
| | - Rory E. Morty
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, member of the German Center for Lung Research, Giessen, Germany
| |
Collapse
|
35
|
Casticin inhibits interleukin-1β-induced ICAM-1 and MUC5AC expression by blocking NF-κB, PI3K-Akt, and MAPK signaling in human lung epithelial cells. Oncotarget 2017; 8:101175-101188. [PMID: 29254155 PMCID: PMC5731865 DOI: 10.18632/oncotarget.20933] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 08/27/2017] [Indexed: 01/31/2023] Open
Abstract
The compound casticin, isolated from Vitex rotundifolia, exerts anti-inflammatory effects and causes apoptosis of cancer cells. In this study, we explored the anti-inflammatory effects of casticin and modulation of cyclooxygenase (COX)-2, intercellular adhesion molecule 1 (ICAM-1), and mucin 5AC (MUC5AC) expression in interleukin-1β (IL-1β)-activated A549 human pulmonary epithelial cells. A549 cells were treated with various concentrations of casticin (5-20 μM), and an inflammatory response was triggered with interleukin (IL)-1β cytokines. Casticin decreased levels of IL-6, tumor necrosis factor α, and IL-8 and suppressed COX-2 expression and prostaglandin E2 production. It also reduced MUC5AC, proinflammatory cytokine, and chemokine gene expression and inhibited ICAM-1 expression for monocyte adhesion in IL-1β-stimulated A549 cells. In addition, casticin inhibited phosphorylation of Akt, phosphatidylinositol 3-kinase (PI3K), and mitogen-activated protein kinase (MAPK) and blocked nuclear transcription factor kappa-B (NF-κB) subunit p65 protein translocation into the nucleus. Co-culture of NF-κB, MAPK, and PI3K inhibitors with casticin also led to more significantly suppressed ICAM-1 expression in inflammatory A549 cells. These results provide evidence that casticin has an anti-inflammatory effect by blocking proinflammatory cytokine, chemokine, and ICAM-1 expression via suppression of the PI3K/Akt, NF-κB, and MAPK signaling pathways in IL-1β-stimulated inflammatory pulmonary epithelial cells.
Collapse
|
36
|
Sun Q, Han W, Hu H, Fan D, Li Y, Zhang Y, Lv Y, Li M, Pan S. Hydrogen alleviates hyperoxic acute lung injury related endoplasmic reticulum stress in rats through upregulation of SIRT1. Free Radic Res 2017; 51:622-632. [PMID: 28675985 DOI: 10.1080/10715762.2017.1351027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Qiang Sun
- Department of Hyperbaric Oxygen, PLA Navy General Hospital, Beijing, China
| | - Wenjie Han
- Department of VIP Respiration Medicine, PLA Navy General Hospital, Beijing, China
| | - Huijun Hu
- Department of Hyperbaric Oxygen, PLA Navy General Hospital, Beijing, China
| | - Danfeng Fan
- Department of VIP Respiration Medicine, PLA Navy General Hospital, Beijing, China
| | - Yanbo Li
- Department of VIP General Medicine, PLA Navy General Hospital, Beijing, China
| | - Yu Zhang
- Department of Hyperbaric Oxygen, PLA Navy General Hospital, Beijing, China
| | - Yan Lv
- Department of Hyperbaric Oxygen, PLA Navy General Hospital, Beijing, China
| | - Mingxin Li
- Department of Hyperbaric Oxygen, PLA Navy General Hospital, Beijing, China
| | - Shuyi Pan
- Department of Hyperbaric Oxygen, PLA Navy General Hospital, Beijing, China
| |
Collapse
|
37
|
Sureshbabu A, Syed M, Das P, Janér C, Pryhuber G, Rahman A, Andersson S, Homer RJ, Bhandari V. Inhibition of Regulatory-Associated Protein of Mechanistic Target of Rapamycin Prevents Hyperoxia-Induced Lung Injury by Enhancing Autophagy and Reducing Apoptosis in Neonatal Mice. Am J Respir Cell Mol Biol 2017; 55:722-735. [PMID: 27374190 DOI: 10.1165/rcmb.2015-0349oc] [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: 12/13/2022] Open
Abstract
Administration of supplemental oxygen remains a critical clinical intervention for survival of preterm infants with respiratory failure. However, prolonged exposure to hyperoxia can augment pulmonary damage, resulting in developmental lung diseases embodied as hyperoxia-induced acute lung injury and bronchopulmonary dysplasia (BPD). We sought to investigate the role of autophagy in hyperoxia-induced apoptotic cell death in developing lungs. We identified increased autophagy signaling in hyperoxia-exposed mouse lung epithelial-12 cells, freshly isolated fetal type II alveolar epithelial cells, lungs of newborn wild-type mice, and human newborns with respiratory distress syndrome and evolving and established BPD. We found that hyperoxia exposure induces autophagy in a Trp53-dependent manner in mouse lung epithelial-12 cells and in neonatal mouse lungs. Using pharmacological inhibitors and gene silencing techniques, we found that the activation of autophagy, upon hyperoxia exposure, demonstrated a protective role with an antiapoptotic response. Specifically, inhibiting regulatory-associated protein of mechanistic target of rapamycin (RPTOR) in hyperoxia settings, as evidenced by wild-type mice treated with torin2 or mice administered (Rptor) silencing RNA via intranasal delivery or Rptor+/-, limited lung injury by increased autophagy, decreased apoptosis, improved lung architecture, and increased survival. Furthermore, we identified increased protein expression of phospho-beclin1, light chain-3-II and lysosomal-associated membrane protein 1, suggesting altered autophagic flux in the lungs of human neonates with established BPD. Collectively, our study unveils a novel demonstration of enhancing autophagy and antiapoptotic effects, specifically through the inhibition of RPTOR as a potentially useful therapeutic target for the treatment of hyperoxia-induced acute lung injury and BPD in developing lungs.
Collapse
Affiliation(s)
- Angara Sureshbabu
- 1 Division of Perinatal Medicine, Department of Pediatrics, Yale University School of Medicine, New Haven, Connecticut
| | - Mansoor Syed
- 1 Division of Perinatal Medicine, Department of Pediatrics, Yale University School of Medicine, New Haven, Connecticut.,2 Section of Neonatal-Perinatal Medicine, Department of Pediatrics, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Pragnya Das
- 2 Section of Neonatal-Perinatal Medicine, Department of Pediatrics, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Cecilia Janér
- 3 Children's Hospital, University of Helsinki, Helsinki, Finland
| | - Gloria Pryhuber
- 4 Department of Pediatrics, University of Rochester School of Medicine and Dentistry, Rochester, New York; and
| | - Arshad Rahman
- 4 Department of Pediatrics, University of Rochester School of Medicine and Dentistry, Rochester, New York; and
| | - Sture Andersson
- 3 Children's Hospital, University of Helsinki, Helsinki, Finland
| | - Robert J Homer
- 5 Department of Pathology, Yale University School of Medicine, New Haven, Connecticut
| | - Vineet Bhandari
- 1 Division of Perinatal Medicine, Department of Pediatrics, Yale University School of Medicine, New Haven, Connecticut.,2 Section of Neonatal-Perinatal Medicine, Department of Pediatrics, Drexel University College of Medicine, Philadelphia, Pennsylvania
| |
Collapse
|
38
|
Marciniak SJ. Endoplasmic reticulum stress in lung disease. Eur Respir Rev 2017; 26:170018. [PMID: 28659504 PMCID: PMC9488656 DOI: 10.1183/16000617.0018-2017] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 05/15/2017] [Indexed: 12/19/2022] Open
Abstract
Exposure to inhaled pollutants, including fine particulates and cigarette smoke is a major cause of lung disease in Europe. While it is established that inhaled pollutants have devastating effects on the genome, it is now recognised that additional effects on protein folding also drive the development of lung disease. Protein misfolding in the endoplasmic reticulum affects the pathogenesis of many diseases, ranging from pulmonary fibrosis to cancer. It is therefore important to understand how cells respond to endoplasmic reticulum stress and how this affects pulmonary tissues in disease. These insights may offer opportunities to manipulate such endoplasmic reticulum stress pathways and thereby cure lung disease.
Collapse
Affiliation(s)
- Stefan J Marciniak
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, UK
| |
Collapse
|
39
|
Flodby P, Li C, Liu Y, Wang H, Marconett CN, Laird-Offringa IA, Minoo P, Lee AS, Zhou B. The 78-kD Glucose-Regulated Protein Regulates Endoplasmic Reticulum Homeostasis and Distal Epithelial Cell Survival during Lung Development. Am J Respir Cell Mol Biol 2017; 55:135-49. [PMID: 26816051 DOI: 10.1165/rcmb.2015-0327oc] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD), a chronic lung disease of prematurity, has been linked to endoplasmic reticulum (ER) stress. To investigate a causal role for ER stress in BPD pathogenesis, we generated conditional knockout (KO) mice (cGrp78(f/f)) with lung epithelial cell-specific KO of Grp78, a gene encoding the ER chaperone 78-kD glucose-regulated protein (GRP78), a master regulator of ER homeostasis and the unfolded protein response (UPR). Lung epithelial-specific Grp78 KO disrupted lung morphogenesis, causing developmental arrest, increased alveolar epithelial type II cell apoptosis, and decreased surfactant protein and type I cell marker expression in perinatal lungs. cGrp78(f/f) pups died immediately after birth, likely owing to respiratory distress. Importantly, Grp78 KO triggered UPR activation with marked induction of the proapoptotic transcription factor CCAAT/enhancer-binding proteins (C/EBP) homologous protein (CHOP). Increased expression of genes involved in oxidative stress and cell death and decreased expression of genes encoding antioxidant enzymes suggest a role for oxidative stress in alveolar epithelial cell (AEC) apoptosis. Increased Smad3 phosphorylation and expression of transforming growth factor-β/Smad3 targets Cdkn1a (encoding p21) and Gadd45a suggest that interactions among the apoptotic arm of the UPR, oxidative stress, and transforming growth factor-β/Smad signaling pathways contribute to Grp78 KO-induced AEC apoptosis and developmental arrest. Chemical chaperone Tauroursodeoxycholic acid reduced UPR activation and apoptosis in cGrp78(f/f) lungs cultured ex vivo, confirming a role for ER stress in observed AEC abnormalities. These results demonstrate a key role for GRP78 in AEC survival and gene expression during lung development through modulation of ER stress, and suggest the UPR as a potential therapeutic target in BPD.
Collapse
Affiliation(s)
- Per Flodby
- Departments of 1 Medicine, Will Rogers Institute Pulmonary Research Center, Division of Pulmonary, Critical Care and Sleep Medicine
| | | | - Yixin Liu
- Departments of 1 Medicine, Will Rogers Institute Pulmonary Research Center, Division of Pulmonary, Critical Care and Sleep Medicine
| | - Hongjun Wang
- Departments of 1 Medicine, Will Rogers Institute Pulmonary Research Center, Division of Pulmonary, Critical Care and Sleep Medicine
| | - Crystal N Marconett
- 3 Surgery, and.,4 Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, Los Angeles, California
| | - Ite A Laird-Offringa
- 3 Surgery, and.,5 Biochemistry and Molecular Biology, and.,4 Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, Los Angeles, California
| | | | - Amy S Lee
- 5 Biochemistry and Molecular Biology, and.,4 Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, Los Angeles, California
| | - Beiyun Zhou
- Departments of 1 Medicine, Will Rogers Institute Pulmonary Research Center, Division of Pulmonary, Critical Care and Sleep Medicine.,4 Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, Los Angeles, California
| |
Collapse
|
40
|
Lu HY, Chen XQ, Tang W, Wang QX, Zhang J. GRP78 silencing enhances hyperoxia-induced alveolar epithelial cell apoptosis via CHOP pathway. Mol Med Rep 2017; 16:1493-1501. [DOI: 10.3892/mmr.2017.6681] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Accepted: 05/26/2017] [Indexed: 11/06/2022] Open
|
41
|
Teng RJ, Jing X, Michalkiewicz T, Afolayan AJ, Wu TJ, Konduri GG. Attenuation of endoplasmic reticulum stress by caffeine ameliorates hyperoxia-induced lung injury. Am J Physiol Lung Cell Mol Physiol 2017; 312:L586-L598. [PMID: 28213471 PMCID: PMC5451596 DOI: 10.1152/ajplung.00405.2016] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 02/09/2017] [Accepted: 02/10/2017] [Indexed: 12/17/2022] Open
Abstract
Rodent pups exposed to hyperoxia develop lung changes similar to bronchopulmonary dysplasia (BPD) in extremely premature infants. Oxidative stress from hyperoxia can injure developing lungs through endoplasmic reticulum (ER) stress. Early caffeine treatment decreases the rate of BPD, but the mechanisms remain unclear. We hypothesized that caffeine attenuates hyperoxia-induced lung injury through its chemical chaperone property. Sprague-Dawley rat pups were raised either in 90 (hyperoxia) or 21% (normoxia) oxygen from postnatal day 1 (P1) to postnatal day 10 (P10) and then recovered in 21% oxygen until P21. Caffeine (20 mg/kg) or normal saline (control) was administered intraperitoneally daily starting from P2. Lungs were inflation-fixed for histology or snap-frozen for immunoblots. Blood caffeine levels were measured in treated pups at euthanasia and were found to be 18.4 ± 4.9 μg/ml. Hyperoxia impaired alveolar formation and increased ER stress markers and downstream effectors; caffeine treatment attenuated these changes at P10. Caffeine also attenuated the hyperoxia-induced activation of cyclooxygenase-2 and markers of apoptosis. In conclusion, hyperoxia-induced alveolar growth impairment is mediated, in part, by ER stress. Early caffeine treatment protects developing lungs from hyperoxia-induced injury by attenuating ER stress.
Collapse
Affiliation(s)
- Ru-Jeng Teng
- Division of Neonatology, Department of Pediatrics, Medical College of Wisconsin, Wauwatosa, Wisconsin
| | - Xigang Jing
- Division of Neonatology, Department of Pediatrics, Medical College of Wisconsin, Wauwatosa, Wisconsin
| | - Teresa Michalkiewicz
- Division of Neonatology, Department of Pediatrics, Medical College of Wisconsin, Wauwatosa, Wisconsin
| | - Adeleye J Afolayan
- Division of Neonatology, Department of Pediatrics, Medical College of Wisconsin, Wauwatosa, Wisconsin
| | - Tzong-Jin Wu
- Division of Neonatology, Department of Pediatrics, Medical College of Wisconsin, Wauwatosa, Wisconsin
| | - Girija G Konduri
- Division of Neonatology, Department of Pediatrics, Medical College of Wisconsin, Wauwatosa, Wisconsin
| |
Collapse
|
42
|
Ju HM, Lu HY, Zhang YY, Wang QX, Zhang Q. [Association between endoplasmic reticulum stress pathway mediated by inositol-requiring kinase 1 and AECII apoptosis in preterm rats induced by hyperoxia]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2016; 18:867-873. [PMID: 27655546 PMCID: PMC7389971 DOI: 10.7499/j.issn.1008-8830.2016.09.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Accepted: 07/08/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To study the association between endoplasmic reticulum stress (ERS) pathway mediated by inositol-requiring kinase 1 (IRE1) and the apoptosis of type II alveolar epithelial cells (AECIIs) exposed to hyperoxia. METHODS The primarily cultured AECIIs from preterm rats were devided into an air group and a hyperoxia group. The model of hyperoxia-induced cell injury was established. The cells were harvested at 24, 48, and 72 hours after hyperoxia exposure. An inverted phase-contrast microscope was used to observe morphological changes of the cells. Annexin V/PI double staining flow cytometry was performed to measure cell apoptosis. RT-PCR and Western blot were used to measure the mRNA and protein expression of glucose-regulated protein 78 (GRP78), IRE1, X-box binding protein-1 (XBP-1), and C/EBP homologous protein (CHOP). An immunofluorescence assay was performed to measure the expression of CHOP. RESULTS Over the time of hyperoxia exposure, the hyperoxia group showed irregular spreading and vacuolization of AECIIs. Compared with the air group, the hyperoxia group showed a significantly increased apoptosis rate of AECIIs and significantly increased mRNA and protein expression of GRP78, IRE1, XBP1, and CHOP compared at all time points (P<0.05). The hyperoxia group had significantly greater fluorescence intensity of CHOP than the air group at all time points. In the hyperoxia group, the protein expression of CHOP was positively correlated with the apoptosis rate of AECIIs and the protein expression of IRE1 and XBP1 (r=0.97, 0.85, and 0.88 respectively; P<0.05). CONCLUSIONS Hyperoxia induces apoptosis of AECIIs possibly through activating the IRE1-XBP1-CHOP pathway.
Collapse
Affiliation(s)
- Hui-Min Ju
- Department of Pediatrics, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212001, China.
| | | | | | | | | |
Collapse
|
43
|
Meiners S, Hilgendorff A. Early injury of the neonatal lung contributes to premature lung aging: a hypothesis. Mol Cell Pediatr 2016; 3:24. [PMID: 27406259 PMCID: PMC4942446 DOI: 10.1186/s40348-016-0052-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 07/04/2016] [Indexed: 12/20/2022] Open
Abstract
Chronic lung disease of the newborn, also known as bronchopulmonary dysplasia (BPD), is the most common chronic lung disease in early infancy and results in an increased risk for long-lasting pulmonary impairment in the adult. BPD develops upon injury of the immature lung by oxygen toxicity, mechanical ventilation, and infections which trigger sustained inflammatory immune responses and extensive remodeling of the extracellular matrix together with dysregulated growth factor signaling. Histopathologically, BPD is characterized by impaired alveolarization, disrupted vascular development, and saccular wall fibrosis. Here, we explore the hypothesis that development of BPD involves disturbance of conserved pathways of molecular aging that may contribute to premature aging of the lung and an increased susceptibility to chronic lung diseases in adulthood.
Collapse
Affiliation(s)
- Silke Meiners
- Comprehensive Pneumology Center (CPC), Ludwig-Maximilians University, Helmholtz Zentrum München, German Center for Lung Research (DZL), Max-Lebsche-Platz 31, 81377, München, Germany.
| | - Anne Hilgendorff
- Comprehensive Pneumology Center (CPC), Ludwig-Maximilians University, Helmholtz Zentrum München, German Center for Lung Research (DZL), Max-Lebsche-Platz 31, 81377, München, Germany.,Perinatal Center Grosshadern, Dr. von Haunersches Children's Hospital, Ludwig-Maximilians University, Munich, Germany
| |
Collapse
|
44
|
Cui TX, Maheshwer B, Hong JY, Goldsmith AM, Bentley JK, Popova AP. Hyperoxic Exposure of Immature Mice Increases the Inflammatory Response to Subsequent Rhinovirus Infection: Association with Danger Signals. THE JOURNAL OF IMMUNOLOGY 2016; 196:4692-705. [PMID: 27183577 DOI: 10.4049/jimmunol.1501116] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 04/04/2016] [Indexed: 11/19/2022]
Abstract
Infants with a history of prematurity and bronchopulmonary dysplasia have a high risk of asthma and viral-induced exacerbations later in life. We hypothesized that hyperoxic exposure, a predisposing factor to bronchopulmonary dysplasia, modulates the innate immune response, producing an exaggerated proinflammatory reaction to viral infection. Two- to 3-d-old C57BL/6J mice were exposed to air or 75% oxygen for 14 d. Mice were infected intranasally with rhinovirus (RV) immediately after O2 exposure. Lung mRNA and protein expression, histology, dendritic cells (DCs), and airway responsiveness were assessed 1-12 d postinfection. Tracheal aspirates from premature human infants were collected for mRNA detection. Hyperoxia increased lung IL-12 expression, which persisted up to 12 d postexposure. Hyperoxia-exposed RV-infected mice showed further increases in IL-12 and increased expression of IFN-γ, TNF-α, CCL2, CCL3, and CCL4, as well as increased airway inflammation and responsiveness. In RV-infected, air-exposed mice, the response was not significant. Induced IL-12 expression in hyperoxia-exposed, RV-infected mice was associated with increased IL-12-producing CD103(+) lung DCs. Hyperoxia also increased expression of Clec9a, a CD103(+) DC-specific damaged cell-recognition molecule. Hyperoxia increased levels of ATP metabolites and expression of adenosine receptor A1, further evidence of cell damage and related signaling. In human preterm infants, tracheal aspirate Clec9a expression positively correlated with the level of prematurity. Hyperoxic exposure increases the activation of CD103(+), Clec9a(+) DCs, leading to increased inflammation and airway hyperresponsiveness upon RV infection. In premature infants, danger signal-induced DC activation may promote proinflammatory airway responses, thereby increasing respiratory morbidity.
Collapse
Affiliation(s)
- Tracy X Cui
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, MI 48109
| | - Bhargavi Maheshwer
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, MI 48109
| | - Jun Y Hong
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, MI 48109
| | - Adam M Goldsmith
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, MI 48109
| | - J Kelley Bentley
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, MI 48109
| | - Antonia P Popova
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, MI 48109
| |
Collapse
|
45
|
Syed MA, Choo-Wing R, Homer RJ, Bhandari V. Role of Nitric Oxide Isoforms in Vascular and Alveolar Development and Lung Injury in Vascular Endothelial Growth Factor Overexpressing Neonatal Mice Lungs. PLoS One 2016; 11:e0147588. [PMID: 26799210 PMCID: PMC4723240 DOI: 10.1371/journal.pone.0147588] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Accepted: 01/06/2016] [Indexed: 12/31/2022] Open
Abstract
Background The role of vascular endothelial growth factor (VEGF)-induced 3 different nitric oxide synthase (NOS) isoforms in lung development and injury in the newborn (NB) lung are not known. We hypothesized that VEGF-induced specific NOS pathways are critical regulators of lung development and injury. Methodology We studied NB wild type (WT), lung epithelial cell-targeted VEGF165 doxycycline-inducible overexpressing transgenic (VEGFTG), VEGFTG treated with a NOS1 inhibitor (L-NIO), VEGFTG x NOS2-/- and VEGFTG x NOS3+/- mice in room air (RA) for 7 postnatal (PN) days. Lung morphometry (chord length), vascular markers (Ang1, Ang2, Notch2, vWF, CD31 and VE-cadherin), cell proliferation (Ki67), vascular permeability, injury and oxidative stress markers (hemosiderin, nitrotyrosine and 8-OHdG) were evaluated. Results VEGF overexpression in RA led to increased chord length and vascular markers at PN7, which were significantly decreased to control values in VEGFTG x NOS2−/− and VEGFTG x NOS3+/- lungs. However, we found no noticeable effect on chord length and vascular markers in the VEGFTG / NOS1 inhibited group. In the NB VEGFTG mouse model, we found VEGF-induced vascular permeability in the NB murine lung was partially dependent on NOS2 and NOS3-signaling pathways. In addition, the inhibition of NOS2 and NOS3 resulted in a significant decrease in VEGF-induced hemosiderin, nitrotyrosine- and 8-OHdG positive cells at PN7. NOS1 inhibition had no significant effect. Conclusion Our data showed that the complete absence of NOS2 and partial deficiency of NOS3 confers protection against VEGF-induced pathologic lung vascular and alveolar developmental changes, as well as injury markers. Inhibition of NOS1 does not have any modulating role on VEGF-induced changes in the NB lung. Overall, our data suggests that there is a significant differential regulation in the NOS-mediated effects of VEGF overexpression in the developing mouse lung.
Collapse
Affiliation(s)
- Mansoor A. Syed
- Division of Perinatal Medicine, Department of Pediatrics, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06520–8064, United States of America
| | - Rayman Choo-Wing
- Division of Perinatal Medicine, Department of Pediatrics, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06520–8064, United States of America
| | - Robert J. Homer
- Department of Pathology, Yale University School of Medicine, 310 Cedar Street, New Haven, CT 06520, United States of America
| | - Vineet Bhandari
- Division of Perinatal Medicine, Department of Pediatrics, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06520–8064, United States of America
- * E-mail:
| |
Collapse
|
46
|
Balany J, Bhandari V. Understanding the Impact of Infection, Inflammation, and Their Persistence in the Pathogenesis of Bronchopulmonary Dysplasia. Front Med (Lausanne) 2015; 2:90. [PMID: 26734611 PMCID: PMC4685088 DOI: 10.3389/fmed.2015.00090] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 12/03/2015] [Indexed: 12/11/2022] Open
Abstract
The concerted interaction of genetic and environmental factors acts on the preterm human immature lung with inflammation being the common denominator leading to the multifactorial origin of the most common chronic lung disease in infants – bronchopulmonary dysplasia (BPD). Adverse perinatal exposure to infection/inflammation with added insults like invasive mecha nical ventilation, exposure to hyperoxia, and sepsis causes persistent immune dysregulation. In this review article, we have attempted to analyze and consolidate current knowledge about the role played by persistent prenatal and postnatal inflammation in the pathogenesis of BPD. While some parameters of the early inflammatory response (neutrophils, cytokines, etc.) may not be detectable after days to weeks of exposure to noxious stimuli, they have already initiated the signaling pathways of the inflammatory process/immune cascade and have affected permanent defects structurally and functionally in the BPD lungs. Hence, translational research aimed at prevention/amelioration of BPD needs to focus on dampening the inflammatory response at an early stage to prevent the cascade of events leading to lung injury with impaired healing resulting in the pathologic pulmonary phenotype of alveolar simplification and dysregulated vascularization characteristic of BPD.
Collapse
Affiliation(s)
- Jherna Balany
- Section of Neonatology, Department of Pediatrics, St. Christopher's Hospital for Children, Drexel University College of Medicine , Philadelphia, PA , USA
| | - Vineet Bhandari
- Section of Neonatology, Department of Pediatrics, St. Christopher's Hospital for Children, Drexel University College of Medicine , Philadelphia, PA , USA
| |
Collapse
|
47
|
Mühlfeld C, Hegermann J, Wrede C, Ochs M. A review of recent developments and applications of morphometry/stereology in lung research. Am J Physiol Lung Cell Mol Physiol 2015; 309:L526-36. [DOI: 10.1152/ajplung.00047.2015] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 07/09/2015] [Indexed: 11/22/2022] Open
Abstract
Design-based stereology is the gold standard of morphometry in lung research. Here, we analyze the current use of morphometric and stereological methods in lung research and provide an overview on recent methodological developments and biological observations made by the use of stereology. Based on this analysis we hope to provide useful recommendations for a good stereological practice to further the use of advanced and unbiased stereological methods.
Collapse
Affiliation(s)
- Christian Mühlfeld
- Institute of Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany
- Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Hannover, Germany; and
- Cluster of Excellence REBIRTH (From Regenerative Biology to Reconstructive Therapy), Hannover, Germany
| | - Jan Hegermann
- Institute of Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany
- Cluster of Excellence REBIRTH (From Regenerative Biology to Reconstructive Therapy), Hannover, Germany
| | - Christoph Wrede
- Institute of Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany
- Cluster of Excellence REBIRTH (From Regenerative Biology to Reconstructive Therapy), Hannover, Germany
| | - Matthias Ochs
- Institute of Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany
- Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Hannover, Germany; and
- Cluster of Excellence REBIRTH (From Regenerative Biology to Reconstructive Therapy), Hannover, Germany
| |
Collapse
|
48
|
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.
Collapse
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
| |
Collapse
|
49
|
Jobe AH. Animal Models, Learning Lessons to Prevent and Treat Neonatal Chronic Lung Disease. Front Med (Lausanne) 2015; 2:49. [PMID: 26301222 PMCID: PMC4528292 DOI: 10.3389/fmed.2015.00049] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 07/14/2015] [Indexed: 11/23/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a unique injury syndrome caused by prolonged injury and repair imposed on an immature and developing lung. The decreased septation and decreased microvascular development phenotype of BPD can be reproduced in newborn rodents with increased chronic oxygen exposure and in premature primates and sheep with oxygen and/or mechanical ventilation. The inflammation caused by oxidants, inflammatory agonists, and/or stretch injury from mechanical ventilation seems to promote the anatomic abnormalities. Multiple interventions targeted to specific inflammatory cells or pathways or targeted to decreasing ventilation-mediated injury can substantially prevent the anatomic changes associated with BPD in term rodents and in preterm sheep or primate models. Most of the anti-inflammatory therapies with benefit in animal models have not been tested clinically. None of the interventions that have been tested clinically are as effective as anticipated from the animal models. These inconsistencies in responses likely are explained by the antenatal differences in lung exposures of the developing animals relative to very preterm humans. The animals generally have normal lungs while the lungs of preterm infants are exposed variably to intrauterine inflammation, growth abnormalities, antenatal corticosteroids, and poorly understood effects from the causes of preterm delivery. The animal models have been essential for the definition of the mediators that can cause a BPD phenotype. These models will be necessary to develop and test future-targeted interventions to prevent and treat BPD.
Collapse
Affiliation(s)
- Alan H Jobe
- Division of Pulmonary Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati , Cincinnati, OH , USA
| |
Collapse
|
50
|
Respiratory consequences of prematurity: evolution of a diagnosis and development of a comprehensive approach. J Perinatol 2015; 35:313-321. [PMID: 25811285 PMCID: PMC4414744 DOI: 10.1038/jp.2015.19] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 01/20/2015] [Accepted: 02/10/2015] [Indexed: 12/14/2022]
Abstract
Bronchopulmonary dysplasia (BPD) is the most common respiratory consequence of premature birth and contributes to significant short- and long-term morbidity, mortality and resource utilization. Initially defined as a radiographic, clinical and histopathological entity, the chronic lung disease known as BPD has evolved as obstetrical and neonatal care have improved the survival of lower gestational age infants. Now, definitions based on the need for supplementary oxygen at 28 days and/or 36 weeks provide a useful reference point in the neonatal intensive-care unit (NICU), but are no longer based on histopathological findings, and are neither designed to predict longer term respiratory consequences nor to study the evolution of a multifactorial disease. The aims of this review are to critically examine the evolution of the diagnosis of BPD and the challenges inherent to current classifications. We found that the increasing use of respiratory support strategies that administer ambient air without supplementary oxygen confounds oxygen-based definitions of BPD. Furthermore, lack of reproducible, genetic, biochemical and physiological biomarkers limits the ability to identify an impending BPD for early intervention, quantify disease severity for standardized classification and approaches and reliably predict the long-term outcomes. More comprehensive, multidisciplinary approaches to overcome these challenges involve longitudinal observation of extremely preterm infants, not only those with BPD, using genetic, environmental, physiological and clinical data as well as large databases of patient samples. The Prematurity and Respiratory Outcomes Program (PROP) will provide such a framework to address these challenges through high-resolution characterization of both NICU and post-NICU discharge outcomes.
Collapse
|