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Wu X, Zhang G, Du X. Cigarette Smoke Extract Induces MUC5AC Expression Through the ROS/ IP3R/Ca 2+ Pathway in Calu-3 Cells. Int J Chron Obstruct Pulmon Dis 2024; 19:1635-1647. [PMID: 39045541 PMCID: PMC11264152 DOI: 10.2147/copd.s469866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 06/29/2024] [Indexed: 07/25/2024] Open
Abstract
Background Chronic obstructive pulmonary disease (COPD) is caused by exposure to noxious external particles, air pollution, and the inhalation of cigarette smoke. Airway mucus hypersecretion particularly mucin5AC (MUC5AC), is a crucial pathological feature of COPD and is associated with its initiation and progression. In this study, we aimed to investigate the effects of cigarette smoke extract (CSE) on MUC5AC expression, particularly the mechanisms by which reactive oxygen species (ROS) induce MUC5AC expression. Methods The effects of CSE on the expression of MUC5AC and mucin5B (MUC5B) were investigated in vitro in Calu-3 cells. MUC5AC and MUC5B expression levels were measured using quantitative reverse transcription-polymerase chain reaction (qRT-PCR), immunofluorescence staining, and enzyme-linked immunosorbent assay (ELISA). Total cellular levels of ROS and Ca2+ were determined using DCFH-DA and Fluo-4 AM. Subsequently, the expression levels of IP3R, IRE1α, p-IRE1α and XBP1s were measured by Western blotting. Gene silencing was achieved by using small-interfering RNAs. Results Our findings revealed that exposure to CSE increased MUC5AC levels and upregulated ROS, IP3R/Ca2+ and unfolded protein response (UPR)-associated factors. In addition, knockdown of IP3R using siRNA decreased CSE-induced Ca2+ production, UPR-associated factors, and MUC5AC expression. Furthermore, 10 mM N-acetyl-l-cysteine (NAC) treatment suppressed the effects of CSE, including ROS generation, IP3R/ Ca2+, UPR activation, and MUC5AC overexpression. Conclusion Our results suggest that ROS regulates CSE-induced UPR and MUC5AC overexpression through IP3R/ Ca2+ signaling. Additionally, we identified NAC as a promising therapeutic agent for mitigating CSE-induced MUC5AC overexpression.
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Affiliation(s)
- Xiaojuan Wu
- Department of Respiratory Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, People’s Republic of China
| | - Guoyue Zhang
- Department of Respiratory Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, People’s Republic of China
| | - Xianzhi Du
- Department of Respiratory Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, People’s Republic of China
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Qian B, Liu J, Wang J, Hao Z, Wang Q. Calcium sensitive receptor and claudin-14 expression in kidney tissues of two kidney stone models. Arch Med Sci 2022; 18:251-256. [PMID: 35154544 PMCID: PMC8826795 DOI: 10.5114/aoms/103453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 01/29/2019] [Indexed: 11/17/2022] Open
Abstract
INTODUCTION The differences in protein expression of calcium sensitive receptor (CaSR) and claudin-14 in a kidney stone model established by nanobacteria (NB) and ethylene glycol (EG) were compared. MATERIAL AND METHODS Ninety Wistar male rats were randomly divided into the NB group, the EG group, and the blank control group (NC group), with 30 rats in each group. Three rats of each group were sacrificed every week after injection. Histopathology was used to evaluate the stone formation of each group. The expression of CaSR and claudin-14 protein was detected by immunohistochemistry every week. RESULTS There was formation of bright crystals in the kidneys of the EG group and the NB group, but not the NC group. At the 3rd week, the expression of CaSR and claudin-14 in the kidney tissue of the EG group began to increase while that in the NB group increased at the 4th week. The expression of CaSR and claudin-14 protein in the EG group was stronger than that in the NB group. Meanwhile, CaSR was expressed in the NC group but did not change significantly. Claudin-14 was not expressed in the NC group. CONCLUSIONS Our results indicate that the traditional EG kidney stone modeling method is more rapid than the NB kidney stone modeling method, with a high stone formation rate, and the CaSR and claudin-14 protein expression levels are higher. Meanwhile, the NB used to establish the kidney stone model was isolated from patients with kidney stones, which may imitate the process of natural formation of kidney stones of patients. Therefore, the results of our research are more conducive to related research on the etiology of stones.
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Affiliation(s)
- Biao Qian
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jihong Liu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jingshen Wang
- Department of Urology Surgery, the First Affiliated Hospital of Medical College in Shihezi University, Shihezi, Xinjiang, China
| | - Zhiqiang Hao
- Department of Urology, the First Affiliated Hospital of Medical College in Shihezi University, Shihezi, Xinjiang, China
| | - Qinzhang Wang
- Department of Urology Surgery, the First Affiliated Hospital of Medical College in Shihezi University, Shihezi, Xinjiang, China
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Zhao J, Yang T, Qiao W, Ye Y, Zhang J, Luo Q. Human Neutrophil Elastase Mediates MUC5AC Hypersecretion via the Tumour Necrosis Factor-α Converting Enzyme-Epidermal Growth Factor Receptor Signalling Pathway in vivo. ORL J Otorhinolaryngol Relat Spec 2021; 83:310-318. [PMID: 34130299 DOI: 10.1159/000509982] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 07/03/2020] [Indexed: 11/19/2022]
Abstract
OBJECTIVES The objective of this study is to examine the role of the tumour necrosis factor-α converting enzyme-epidermal growth factor receptor (TACE-EGFR) pathway in human neutrophil elastase (HNE)-induced MUC5AC mucin expression in mice. METHOD Four groups of mice, treated with HNE alone (HNE group), HNE plus TACE inhibitor (HNE + TAPI-2 group), HNE plus EGFR inhibitor (HNE + AG1478 group), and untreated (control group), were used in the experiment. Histopathological changes were monitored by haematoxylin-eosin (HE) and periodic acid-Schiff (PAS) staining. TACE, EGFR, and MUC5AC expression in the nasal mucosa were determined using immunohistochemistry. The expression of p-EGFR, EGFR, and TACE protein was analysed on Western blots, and MUC5AC protein levels were assessed via ELISA. TACE, EGFR, and MUC5AC expression in the nasal mucosa were determined using real-time quantitative PCR. RESULTS Compared to the control group, HE-stained tissues from the HNE group showed an irregular epithelium as well as goblet cell and submucosal glandular hyperplasia. In the nasal mucosa, strongly positive fuchsia granules were seen in PAS staining and significant increases in TACE, EGFR, MUC5AC mRNA, and protein expression were detected (p < 0.01). The HNE + TAPI-2 and HNE + AG1478 groups had significantly less goblet cell and submucosal gland hyperplasia as well as weaker PAS staining. Compared to mice treated with HNE alone, in HNE + TAPI-2-treated mice, the levels of TACE, EGFR, and MUC5AC mRNA and protein as well as p-EGFR protein were significantly reduced (p < 0.01). In HNE + AG1478-treated mice, EGFR and MUC5AC mRNA and protein levels and p-EGFR protein expression were reduced significantly (p < 0.01), but the difference in TACE mRNA and protein expression between the HNE + AG1478 and HNE groups was not significant (p > 0.05). CONCLUSION Using a newly developed, stable experimental model of nasal hypersecretion in mice, we showed that TAPI-2 or AG1478 inhibited HNE-induced MUC5AC production. This suggests that MUC5AC mucin expression in vivo is mediated by a cascade involving the HNE-TACE-EGFR signalling pathway.
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Affiliation(s)
- Junmei Zhao
- Department of Otolaryngology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Tian Yang
- Department of Otolaryngology, Jiangxi Health Vocational College, Nanchang, China
| | - Wei Qiao
- Department of Otolaryngology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yu Ye
- Department of Otolaryngology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jian Zhang
- Department of Otolaryngology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Qing Luo
- Department of Otolaryngology, The First Affiliated Hospital of Nanchang University, Nanchang, China
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Cheng CY, Vo TTT, Lin WN, Huang HW, Chuang CC, Chu PM, Lee IT. Nrf2/HO-1 partially regulates cytoprotective effects of carbon monoxide against urban particulate matter-induced inflammatory responses in oral keratinocytes. Cytokine 2020; 133:155185. [PMID: 32615411 DOI: 10.1016/j.cyto.2020.155185] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 06/22/2020] [Accepted: 06/23/2020] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Exposure to airborne particulate matter (PM) increases the proportion of oral inflammatory diseases. During the formation of inflammatory conditions, the nucleotide-binding domain and leucine-rich repeat protein 3 (NLRP3) inflammasome activation plays an important regulator. Carbon monoxide (CO) arising from heme degradation, catalyzed particularly by heme oxygenase-1 (HO-1), has been shown to own cytoprotective effects including anti-inflammation and antioxidant. Here, we determined the novel mechanisms of carbon monoxide releasing molecule-2 (CORM-2) on PM-induced inflammatory responses in human oral keratinocytes (HOKs). METHODS The effects of CORM-2 on the expression of various inflammatory proteins induced by PM were determined by Western blot, real-time PCR, promoter assay, and ELISA. The involvement of signaling molecules in these responses was studied by using the selective pharmacological inhibitors and siRNAs. RESULTS We proved that PM enhanced C-reactive protein (CRP) levels, NLRP3 inflammasome and caspase-1 activation, and IL-1β release, which were reduced by preincubation with CORM-2. Transfection with PKCα siRNA and preincubation with the ROS scavenger (N-acetyl-cysteine, NAC), an inhibitor of NADPH oxidase (diphenyleneiodonium, DPI), or the mitochondria-specific superoxide scavenger (MitoTEMPO) inhibited PM-mediated inflammatory responses. In addition, PM-regulated PKCα and NADPH oxidase activation as well as NADPH oxidase- and mitochondria-derived ROS generation were inhibited by CORM-2, but not inactivate CORM-2 (iCORM-2) pretreatment. At the end, we confirmed that CORM-2 improved PM-induced inflammatory responses via the induction of Nrf2 activation and HO-1 expression. CONCLUSION We suggest that CORM-2 inhibits PM-induced inflammatory responses in HOKs via the inhibition of PKCα/ROS/NLRP3 inflammasome activation combined with the induction of Nrf2/HO-1 expression.
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Affiliation(s)
- Ching-Yi Cheng
- Graduate Institute of Health Industry Technology, Research Center for Chinese Herbal Medicine and Research Center for Food and Cosmetic Safety, Chang Gung University of Science and Technology, Taoyuan, Taiwan; Department of Pulmonary Infection and Immunology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Thi Thuy Tien Vo
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
| | - Wei-Ning Lin
- Graduate Institute of Biomedical and Pharmaceutical Science, Fu Jen Catholic University, New Taipei City 242, Taiwan
| | - Hsiang-Wei Huang
- School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chu-Chun Chuang
- International MS/PhD Program in Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Pei-Ming Chu
- School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan
| | - I-Ta Lee
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan.
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Życzkowski M, Rajwa P, Burzyński B, Gaździk M, Florczyk I, Slabon-Turska M, Paradysz A. Neutrophil-to-mean platelet volume ratio as a new predictor for overall and cancer-specific survival in patients with localized clear cell renal cell carcinoma. Arch Med Sci 2019; 16:1072-1077. [PMID: 32863996 PMCID: PMC7444721 DOI: 10.5114/aoms.2019.83822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 02/08/2019] [Indexed: 01/04/2023] Open
Abstract
INTRODUCTION The present study investigated the prognostic value of neutrophil-to-mean platelet volume ratio (NMPVR) for overall (OS) and cancer-specific survival (CSS) in patients treated with nephrectomy for localized clear cell renal cell carcinoma (ccRCC). MATERIAL AND METHODS Medical records of 344 consecutive patients who underwent partial or radical nephrectomy for M0 ccRCC were retrospectively analyzed. Based on the median NMPVR, the study population was divided into two groups: the high NMPVR group with NMPVR higher than or equal to the median, and the low NMPVR group with NMPVR lower than the median. Comparisons of baseline characteristics and laboratory and pathological findings were performed. Kaplan-Meier survival curves and Cox regression model analysis were used to assess the prognostic value of the NMPVR. RESULTS Patients with higher NMPVR values were more frequently diagnosed with advanced disease, tumor necrosis and higher tumor grade. The OS and CSS were significantly shorter in patients with NMPVR ≥ 0.41 compared to patients with NMPVR < 0.41. Inclusion of NMPVR in multivariable models of OS and CSS with other confounding variables determined categorized NMPVR as an independent prognostic factor for both endpoints. CONCLUSIONS Pretreatment NMPVR ≥ 0.41 was associated with lower OS and CSS. NMPVR might be applied as a cheap and uncomplicated prognostic indicator in localized ccRCC patients treated with a primary surgical approach.
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Affiliation(s)
- Marcin Życzkowski
- Department of Urology, Medical University of Silesia, Zabrze, Poland
| | - Paweł Rajwa
- Department of Urology, Medical University of Silesia, Zabrze, Poland
| | - Bartłomiej Burzyński
- Department of Rehabilitation, School of Health Sciences, Medical University of Silesia, Katowice, Poland
| | - Maciej Gaździk
- Student Scientific Society, Department of Urology, Medical University of Silesia, Zabrze, Poland
| | - Iga Florczyk
- Student Scientific Society, Department of Urology, Medical University of Silesia, Zabrze, Poland
| | - Monika Slabon-Turska
- Student Scientific Society, Department of Urology, Medical University of Silesia, Zabrze, Poland
| | - Andrzej Paradysz
- Department of Urology, Medical University of Silesia, Zabrze, Poland
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