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Zhao B, Liu C, Qi Y, Zhang T, Wang Y, He X, Wang L, Jin T. Preliminary study of identified novel susceptibility loci for HAPE risk in a Chinese male Han population. Per Med 2024; 21:227-241. [PMID: 38940394 DOI: 10.1080/17410541.2024.2365617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 06/05/2024] [Indexed: 06/29/2024]
Abstract
High altitude pulmonary edema (HAPE) is a life-threatening form of non-cardiogenic pulmonary edema. In recent years, association studies have become the main method for identifying HAPE genetic loci. A genome-wide association study (GWAS) of HAPE risk-associated loci was performed in Chinese male Han individuals (164 HAPE cases and 189 healthy controls) by the Precision Medicine Diversity Array Chip with 2,771,835 loci (Applied Biosystems Axiom™). Eight overlapping candidate loci in CCNG2, RP11-445O3.2, NUPL1 and WWOX were finally selected. In silico functional analyses displayed the PPI network, functional enrichment and signal pathways related to CCNG2, NUPL1, WWOX and NRXN1. This study provides data supplements for HAPE susceptibility gene loci and new insights into HAPE susceptibility.
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Affiliation(s)
- Beibei Zhao
- School of Medicine, Xizang Minzu University, Xianyang 712082, Shaanxi, China
| | - Changchun Liu
- School of Medicine, Xizang Minzu University, Xianyang 712082, Shaanxi, China
| | - Yijin Qi
- School of Medicine, Xizang Minzu University, Xianyang 712082, Shaanxi, China
| | - Tianyi Zhang
- School of Medicine, Xizang Minzu University, Xianyang 712082, Shaanxi, China
| | - Yuhe Wang
- Department of Clinical Laboratory, The Affiliated Hospital of Xizang Minzu University, Xianyang, Shaanxi 712082, China
| | - Xue He
- School of Medicine, Xizang Minzu University, Xianyang 712082, Shaanxi, China
| | - Li Wang
- School of Medicine, Xizang Minzu University, Xianyang 712082, Shaanxi, China
| | - Tianbo Jin
- School of Medicine, Xizang Minzu University, Xianyang 712082, Shaanxi, China
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Zeng Z, Abdelwahid E, Chen W, Ascoli C, Pham T, Jacobson JR, Dudek SM, Natarajan V, Aldaz CM, Machado RF, Singla S. Endothelial knockdown of the tumor suppressor, WWOX, increases inflammation in ventilator-induced lung injury. Am J Physiol Lung Cell Mol Physiol 2024; 326:L687-L697. [PMID: 38563965 PMCID: PMC11380939 DOI: 10.1152/ajplung.00277.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 03/11/2024] [Accepted: 03/11/2024] [Indexed: 04/04/2024] Open
Abstract
Chronic cigarette smoke exposure decreases lung expression of WWOX which is known to protect the endothelial barrier during infectious models of acute respiratory distress syndrome (ARDS). Proteomic analysis of WWOX-silenced endothelial cells (ECs) was done using tandem mass tag mass spectrometry (TMT-MS). WWOX-silenced ECs as well as those isolated from endothelial cell Wwox knockout (EC Wwox KO) mice were subjected to cyclic stretch (18% elongation, 0.5 Hz, 4 h). Cellular lysates and media supernatant were harvested for assays of cellular signaling, protein expression, and cytokine release. These were repeated with dual silencing of WWOX and zyxin. Control and EC Wwox KO mice were subjected to high tidal volume ventilation. Bronchoalveolar lavage fluid and mouse lung tissue were harvested for cellular signaling, cytokine secretion, and histological assays. TMT-MS revealed upregulation of zyxin expression during WWOX knockdown which predicted a heightened inflammatory response to mechanical stretch. WWOX-silenced ECs and ECs isolated from EC Wwox mice displayed significantly increased cyclic stretch-mediated secretion of various cytokines (IL-6, KC/IL-8, IL-1β, and MCP-1) relative to controls. This was associated with increased ERK and JNK phosphorylation but decreased p38 mitogen-activated kinases (MAPK) phosphorylation. EC Wwox KO mice subjected to VILI sustained a greater degree of injury than corresponding controls. Silencing of zyxin during WWOX knockdown abrogated stretch-induced increases in IL-8 secretion but not in IL-6. Loss of WWOX function in ECs is associated with a heightened inflammatory response during mechanical stretch that is associated with increased MAPK phosphorylation and appears, in part, to be dependent on the upregulation of zyxin.NEW & NOTEWORTHY Prior tobacco smoke exposure is associated with an increased risk of acute respiratory distress syndrome (ARDS) during critical illness. Our laboratory is investigating one of the gene expression changes that occurs in the lung following smoke exposure: WWOX downregulation. Here we describe changes in protein expression associated with WWOX knockdown and its influence on ventilator-induced ARDS in a mouse model.
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Affiliation(s)
- Zhenguo Zeng
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, the First Affiliation Hospital, Jiangxi Medical College, Nanchang University, Nanchang, People's Republic of China
| | - Eltyeb Abdelwahid
- Division of Pulmonary, Critical Care, Sleep and Allergy Medicine, University of Illinois at Chicago, Chicago, Illinois, United States
| | - Weiguo Chen
- Division of Pulmonary, Critical Care, Sleep and Allergy Medicine, University of Illinois at Chicago, Chicago, Illinois, United States
| | - Christian Ascoli
- Division of Pulmonary, Critical Care, Sleep and Allergy Medicine, University of Illinois at Chicago, Chicago, Illinois, United States
| | - Trinh Pham
- Division of Pulmonary, Critical Care, Sleep and Allergy Medicine, University of Illinois at Chicago, Chicago, Illinois, United States
| | - Jeffrey R Jacobson
- Division of Pulmonary, Critical Care, Sleep and Allergy Medicine, University of Illinois at Chicago, Chicago, Illinois, United States
| | - Steven M Dudek
- Division of Pulmonary, Critical Care, Sleep and Allergy Medicine, University of Illinois at Chicago, Chicago, Illinois, United States
| | - Viswanathan Natarajan
- Division of Pulmonary, Critical Care, Sleep and Allergy Medicine, University of Illinois at Chicago, Chicago, Illinois, United States
| | - C Marcelo Aldaz
- MD Anderson Cancer Center, University of Texas, Houston, Texas, United States
| | - Roberto F Machado
- Division of Pulmonary, Critical Care, Sleep, and Occupational Medicine, Indiana University, Indianapolis, Indiana, United States
| | - Sunit Singla
- Division of Pulmonary, Critical Care, Sleep and Allergy Medicine, University of Illinois at Chicago, Chicago, Illinois, United States
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Zou K, Wang C, Zhou C, Yang Y, Zeng Z. Early growth response 1/Krüppel-like factor 5 pathway inhibitor alleviates lipopolysaccharide-induced lung injury by promoting autophagy. Eur J Pharmacol 2024; 964:176294. [PMID: 38158112 DOI: 10.1016/j.ejphar.2023.176294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/18/2023] [Accepted: 12/19/2023] [Indexed: 01/03/2024]
Abstract
Early transcription factors play critical roles in the development of acute lung injury/acute respiratory distress syndrome (ALI/ARDS). Early growth response 1 (EGR1) is a transcription factor essential for various biological processes, including regulation of metabolism, differentiation, and inflammation. However, its role in ALI has been poorly reported. In this study, we aimed to determine the effect of EGR1 on ALI to gain insights into the theoretical basis for further treatment of ALI. By employing concerted molecular biology techniques, we showed that EGR1 protein was upregulated in mice. EGR1 protein was upregulated in mice and human lung epithelial cells in response to lipopolysaccharide (LPS) stimulation. EGR1 knockdown promoted autophagy and reduced LPS-induced pro-inflammatory mediator production. EGR1 was preferentially bound to the GCGTGGGCG motif region and EGR1-binding peak-related genes were mainly enriched in autophagy and injury stress-related pathways. Additionally, EGR1 promoted Krüppel-like factor 5 (KLF5) transcription by binding to the KLF5 promoter region, and KLF5 knockdown significantly decreased inflammatory damage, suggesting that EGR1 promotes ALI progression by regulating KLF5 expression. Furthermore, ML264, an inhibitor of the EGR1/KLF5 pathway axis, displayed a protective role in ALI to reduce inflammation. In conclusion, our findings demonstrate the potential of EGR1 knockdown to inhibit KLF5 and promote autophagy, further reducing the inflammatory response to mitigate ALI/ARDS. The EGR1/KLF5 pathway axis may be a valuable therapeutic target for the treatment of ALI/ARDS.
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Affiliation(s)
- Kang Zou
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, 330006, Jiangxi Province, China; Jiangxi Institute of Respiratory Diseases, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, 330006, Jiangxi Province, China; Department of Critical Care Medicine, The First Affiliated Hospital of Gannan Medical University, Ganzhou City, 341000, Jiangxi Province, China
| | - Cheng Wang
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, 330006, Jiangxi Province, China; Jiangxi Institute of Respiratory Diseases, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, 330006, Jiangxi Province, China
| | - Chaoqi Zhou
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, 330006, Jiangxi Province, China
| | - Yuting Yang
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, 330006, Jiangxi Province, China
| | - Zhenguo Zeng
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, 330006, Jiangxi Province, China.
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Wang C, Yang Y, Zhou C, Mei X, Liu J, Luo K, Zhou J, Qin C, Zeng Z. WWOX activates autophagy to alleviate lipopolysaccharide-induced acute lung injury by regulating mTOR. Int Immunopharmacol 2023; 115:109671. [PMID: 36621327 DOI: 10.1016/j.intimp.2022.109671] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/22/2022] [Accepted: 12/30/2022] [Indexed: 01/09/2023]
Abstract
Acute lung injury (ALI) is characterized by acute systemic inflammatory responses that may lead to severe acute respiratory distress syndrome (ARDS). The clinical course of ALI/ARDS is variable; however, it has been reported that lipopolysaccharides (LPS) play a role in its development. The fragile chromosomal site gene WWOX is highly sensitive to genotoxic stress induced by environmental exposure and is an important candidate gene for exposure-related lung disease research. However, the expression of WWOX and its role in LPS-induced ALI still remain unidentified. This study investigated the expression of WWOX in mouse lung and epithelial cells and explored the role of WWOX in LPS-induced ALI model in vitro and in vivo. In addition, we explored one of the possible mechanisms by which WWOX alleviates ALI from the perspective of autophagy. Here, we observed that LPS stimulation reduced the expression of WWOX and the autophagy marker microtubule-associated protein 1 light chain 3β-II (MAP1LC3B/LC3B) in mouse lung epithelial and human epithelial (H292) cells. Overexpression of WWOX led to the activation of autophagy and inhibited inflammatory responses in LPS-induced ALI cells and mouse model. More importantly, we found that WWOX interacts with mechanistic target of rapamycin [serine/threonine kinase] (mTOR) and regulates mTOR and ULK-1 signaling-mediated autophagy. Thus, reduced WWOX levels were associated with LPS-induced ALI. WWOX can activate autophagy in lung epithelial cells and protect against LPS-induced ALI, which is partly related to the mTOR-ULK1 signaling pathway.
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Affiliation(s)
- Cheng Wang
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China; Jiangxi Institute of Respiratory Disease, Nanchang 330052, China
| | - Yuting Yang
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Chaoqi Zhou
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Xianghuang Mei
- Department of Gastrointestinal Surgery, Heji Hospital Affiliated to Changzhi Medical College, Changzhi 046000, China
| | - Jing Liu
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China; Jiangxi Institute of Respiratory Disease, Nanchang 330052, China
| | - Kaihang Luo
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China; Jiangxi Institute of Respiratory Disease, Nanchang 330052, China
| | - Jia Zhou
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China; Jiangxi Institute of Respiratory Disease, Nanchang 330052, China
| | - Cheng Qin
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Zhenguo Zeng
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China.
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Cortactin Modulates Lung Endothelial Apoptosis Induced by Cigarette Smoke. Cells 2021; 10:cells10112869. [PMID: 34831092 PMCID: PMC8616125 DOI: 10.3390/cells10112869] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 10/19/2021] [Accepted: 10/20/2021] [Indexed: 12/19/2022] Open
Abstract
Cigarette smoke (CS) is the primary cause of Chronic Obstructive Pulmonary Disease (COPD), and an important pathophysiologic event in COPD is CS-induced apoptosis in lung endothelial cells (EC). Cortactin (CTTN) is a cytoskeletal actin-binding regulatory protein with modulation by Src-mediated tyrosine phosphorylation. Based upon data demonstrating reduced CTTN mRNA levels in the lungs of smokers compared to non-smokers, we hypothesized a functional role for CTTN in CS-induced mitochondrial ROS generation and apoptosis in lung EC. Exposure of cultured human lung EC to CS condensate (CSC) led to the rearrangement of the actin cytoskeleton and increased CTTN tyrosine phosphorylation (within hours). Exposure to CS significantly increased EC mitochondrial ROS generation and EC apoptosis. The functional role of CTTN in these CSC-induced EC responses was explored using cortactin siRNA to reduce its expression, and by using a blocking peptide for the CTTN SH3 domain, which is critical to cytoskeletal interactions. CTTN siRNA or blockade of its SH3 domain resulted in significantly increased EC mitochondrial ROS and apoptosis and augmented CSC-induced effects. Exposure of lung EC to e-cigarette condensate demonstrated similar results, with CTTN siRNA or SH3 domain blocking peptide increasing lung EC apoptosis. These data demonstrate a novel role for CTTN in modulating lung EC apoptosis induced by CS or e-cigarettes potentially providing new insights into COPD pathogenesis.
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Tanimura K, Nyunoya T. Loss of Endothelial WWOX: A Risk Factor for ARDS in Smokers? Am J Respir Cell Mol Biol 2021; 64:10-11. [PMID: 33105088 PMCID: PMC7780999 DOI: 10.1165/rcmb.2020-0444ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Kazuya Tanimura
- Department of Medicine University of Pittsburgh Pittsburgh, Pennsylvania and
| | - Toru Nyunoya
- Department of Medicine University of Pittsburgh Pittsburgh, Pennsylvania and.,Medical Specialty Service Line Veterans Affairs Pittsburgh Healthcare System Pittsburgh, Pennsylvania
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