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Condition: Chronic Obstructive Pulmonary

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Total 173 results found since Jan 2013.

Expression of targets of the RNA-binding protein AUF-1 in human airway epithelium indicates its role in cellular senescence and inflammation
DiscussionLoss of intracellular AUF-1 may alter posttranscriptional regulation of targets particularly relevant for protection of genomic integrity and gene regulation, thus concurring to airway epithelial inflammatory responses related to oxidative stress and accelerated aging. Exosomal-associated AUF-1 may in turn preserve bound RNA targets and sustain their function, participating to spreading of inflammation and senescence to neighbouring cells.
Source: Frontiers in Immunology - July 7, 2023 Category: Allergy & Immunology Source Type: research

Cyclophilin D Contributes to Airway Epithelial Mitochondrial Damage in Chronic Obstructive Pulmonary Disease
ConclusionThese data suggest that CypD signaling pathway is involved in the pathogenesis of COPD and provide a potential therapeutic target for COPD.
Source: Lung - June 1, 2023 Category: Respiratory Medicine Source Type: research

High uric acid aggravates apoptosis of lung epithelial cells induced by cigarette smoke extract through downregulating PRDX2 in chronic obstructive pulmonary disease
In conclusion, HUA aggravated CSE-induced cellular ROS levels and led to ROS-dependent mitochondrial dynamics disorder and apoptosis in MLE-12 cells through downregulating PRDX2.PMID:37003188 | DOI:10.1016/j.intimp.2023.110056
Source: International Immunopharmacology - April 1, 2023 Category: Allergy & Immunology Authors: Ya Dong Fei Han Yue Su Bei Sun Wei Zhao Congqing Pan Source Type: research

Cigarette smoking is a secondary cause of folliculin loss
Conclusions Our study demonstrates that CS exposure is a secondary cause of FLCN deficiency due to the enhanced proteolysis, which promoted airway epithelial cell death.
Source: Thorax - March 15, 2023 Category: Respiratory Medicine Authors: Li, X., Lai, Y., Lane, Z., Strollo, H., Tanimura, K., Sembrat, J. C., Zou, C., Myerburg, M. M., Rojas, M., Shapiro, S., Jiang, Y., Nyunoya, T. Tags: Open access, Thorax Smoking Source Type: research

ROS induced the Rab26 promoter hypermethylation to promote cigarette smoking-induced airway epithelial inflammation of COPD through activation of MAPK signaling
In this study, we explore the role of Rab26 in CS exposure modulating the inflammatory response of airway epithelium and the novel mechanism of CS exposure regulation Rab26. These data showed that CS exposure and H2O2 (a type of ROS) suppressed the expression of Rab26 and increased the expression of DNMT3b in vivo and in vitro. GEO data analysis found the level of Rab26 was decreased in the lung tissue of COPD patients. CSE-induced ROS promoted DNA methylation of the Rab26 promoter and inhibited its promoter activity by elevating the DNMT3b level. Antioxidants N-Acetyl-l-cysteine (NAC), 5-Aza-2'-deoxycytidine (5-AZA) (DNA ...
Source: Free Radical Biology and Medicine - January 7, 2023 Category: Biology Authors: Bin-Feng He Yi-Xing Wu Wei-Ping Hu Jian-Lan Hua Yaoping Han Jing Zhang Source Type: research

Tartrate resistant acid phosphatase 5 (TRAP5) mediates immune cell recruitment in a murine model of pulmonary bacterial infection
In this study, we found that Trap5-/- mice had impaired clearance of P. aeruginosa airway infection and reduced recruitment of immune cells (i.e. neutrophils and inflammatory macrophages). Trap5 knockdown using siRNA resulted in a decreased activation of the proinflammatory transcription factor NF-κB in reporter mice and a subsequent decrease of proinflammatory gene expression. Add-back experiments of enzymatically active TRAP5 to Trap5-/- mice restored immune cell recruitment and bacterial killing. In human CF lung tissue, TRAP5 of alveolar macrophages was detected in proximity to OPN to a higher degree than in normal lu...
Source: Frontiers in Immunology - December 8, 2022 Category: Allergy & Immunology Source Type: research

MiR-125b-5p up-regulation in asthma and COPD overlap patients mediates oxidative stress and apoptosis via targeting IL6R/NLRC5/TRIAP1
Conclusions: MiR-125b-5p is up-regulated in ACO patients, and may cause oxidative stress and cell apoptosis through targeting IL6R, NLRC5, TRIAP1 genes.
Source: European Respiratory Journal - December 1, 2022 Category: Respiratory Medicine Authors: Chang, Y., Lee, C., Chen, Y. Tags: 03.01 - Molecular pathology and functional genomics Source Type: research

Role of urokinase-type plasminogen activator receptor (uPAR) in senescent lung cells
Conclusion: uPAR is highly expressed in lung fibroblasts but not increased in senescence. In SAEC, uPAR may be elevated in senescence but does not correlate with the senescence markers examined. This suggests that uPAR is unlikely to be a useful target for senescent lung cell removal.
Source: European Respiratory Journal - December 1, 2022 Category: Respiratory Medicine Authors: Wrench, C., Dodgson, J., Overed-Sayer, C., Donnelly, L., Barnes, P. Tags: 03.02 - Airway cell biology and immunopathology Source Type: research

Spray drying siRNA-lipid nanoparticles for dry powder pulmonary delivery
This study verifies the successful spray drying procedure of LNP-siRNA systems maintaining their integrity and mediating strong gene silencing efficiency on mRNA and protein levels both in vitro and ex vivo. The successful spray drying procedure of LNP-siRNA formulations in 5% lactose solution creates a novel siRNA-based therapy option to target respiratory diseases such as lung cancer, asthma, COPD, cystic fibrosis and viral infections.PMID:36126785 | DOI:10.1016/j.jconrel.2022.09.021
Source: Cancer Control - September 20, 2022 Category: Cancer & Oncology Authors: Christoph M Zimmermann Domizia Baldassi Karen Chan Nathan B P Adams Alina Neumann Diana Leidy Porras-Gonzalez Xin Wei Nikolaus Kneidinger Mircea Gabriel Stoleriu Gerald Burgstaller Dominik Witzigmann Paola Luciani Olivia M Merkel Source Type: research

Current Drug Targeting using siRNAbased Nano Therapeutics for Pulmonary Diseases
Curr Pharm Des. 2022 Jul 27. doi: 10.2174/1381612828666220727144223. Online ahead of print.ABSTRACTThe importance of siRNA in nano drug delivery systems to target important pulmonary disorders such as chronic obstructive pulmonary disease (COPD), asthma, lung cancer, and others is reviewed in this perspective. The great majority of lung illnesses are caused by protein misfolding. As a result, siRNA-based therapies are increasingly being used to target the gene. Given the difficulties of delivering bare siRNA, siRNA protection may ensure its efficacy in gene therapy. These issues could be solved with a nano-based siRNA deli...
Source: Current Pharmaceutical Design - July 27, 2022 Category: Drugs & Pharmacology Authors: Venkateshwaran Krishnaswami Ruckmani Kandasamy Source Type: research

Wood smoke particulate matter (WSPM2.5) induces pyroptosis through both caspase-1/IL-1 β/IL-18 and ATP/P2Y-dependent mechanisms in human bronchial epithelial cells
In this study, biofuel PM2.5 extracted from wood smoke (WSPM2.5) was used according to our previous publication. A 16-HBE cell line was used as the cell model. Results showed that: Firstly, WSPM2.5 induced significant pyroptosis in 16-HBE cells, reflected by the typical changes including elevated release of lactate dehydrogenase release (LDH) and activated activity and expression of Caspase-1/IL-1β/IL-18 signaling pathway. Then, specific inhibitors for both Caspases (Z-VAD-FMK) and Caspase-1 (VX-765), as well as specific siRNA knockdown of IL-1β all effectively attenuated the WSPM2.5-induced upregulation of downstream in...
Source: Chemosphere - July 19, 2022 Category: Chemistry Authors: Xin Fu Wei Hong Shuyi Li Zhi Chen Wenqu Zhou Jianwei Dai Xiaoliang Deng Hongbin Zhou Bing Li Pixin Ran Source Type: research