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Mao R, Yang Y, Zheng L, Liang X, Jia Y, Shao Y. Role of circPSEN1 in carbon black and cadmium co-exposure induced autophagy-dependent ferroptosis in respiratory epithelial cells. Environ Pollut 2024; 346:123562. [PMID: 38365078 DOI: 10.1016/j.envpol.2024.123562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 01/27/2024] [Accepted: 02/11/2024] [Indexed: 02/18/2024]
Abstract
Carbon black and cadmium (Cd) are important components of atmospheric particulate matter and cigarette smoke that are closely associated with the occurrence and development of lung diseases. Carbon black, particularly carbon black nanoparticles (CBNPs), can easily adsorbs metals and cause severe lung damage and even cell death. Therefore, this study aimed to explore the mechanisms underlying the combined toxicity of CBNPs and Cd. We found that the combined exposure to CBNPs and Cd promoted significantly greater autophagosome formation and ferroptosis (increased malonaldehyde (MDA), reactive oxygen species (ROS), and divalent iron ions (Fe2+) levels and altered ferroptosis-related proteins) compared with single exposure in both 16HBE cells (human bronchial epithelioid cells) and mouse lung tissues. The levels of ferroptosis proteins, transferrin receptor protein 1 (TFRC) and glutathione peroxidase 4 (GPX4), were restored by CBNPs-Cd exposure following treatment with a 3-MA inhibitor. Additionally, under CBNPs-Cd exposure, circPSEN1 overexpression inhibited increases in the autophagy proteins microtubule-associated protein 1 light chain 3 (LC3II/I) and sequestosome-1 (P62). Moreover, increases in TFRC and Fe2+, and decreases in GPX4were inhibited. Knockdown of circPSEN1 reversed these effects. circPSEN1 interacts with autophagy-related gene 5 (ATG5) protein and upregulates nuclear receptor coactivator 4 (NCOA4), the co-interacting protein of ATG5, thereby degrading ferritin heavy chain 1 (FTH1) and increasing Fe2+ in 16HBE cells. These results indicated that the combined exposure to CBNPs and Cd promoted the binding of circPSEN1 to ATG5, thereby increasing autophagosome synthesis and ATG5-NCOA4-FTH1 axis activation, ultimately inducing autophagy-dependent ferroptosis in 16HBE cells and mouse lung tissues. This study provides novel insights into the toxic effects of CBNPs and Cd in mixed pollutants.
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Affiliation(s)
- Rulin Mao
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Yusi Yang
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Liting Zheng
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Xiaohong Liang
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Yangyang Jia
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China; School of Public Health, Guangzhou Medical University, Guangzhou, 511436, China
| | - Yueting Shao
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China; School of Public Health, Guangzhou Medical University, Guangzhou, 511436, China.
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Wu C, Hu X, Jiang Y, Tang J, Ge H, Deng S, Li X, Feng J. Involvement of ERK and Oxidative Stress in Airway Exposure to Cadmium Chloride Aggravates Airway Inflammation in Ovalbumin-Induced Asthmatic Mice. Toxics 2024; 12:235. [PMID: 38668459 PMCID: PMC11054730 DOI: 10.3390/toxics12040235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/17/2024] [Accepted: 03/21/2024] [Indexed: 04/29/2024]
Abstract
Inhalation represents a significant route of cadmium (Cd) exposure, which is associated with an elevated risk of lung diseases. This research study aims to evaluate the impact of repeated low-dose cadmium inhalation on exacerbating airway inflammation induced by ovalbumin (OVA) in asthma-afflicted mice. Mice were grouped into four categories: control (Ctrl), OVA, cadmium chloride (CdCl2), and OVA + cadmium chloride (OVA + CdCl2). Mice in the OVA group displayed increased airway mucus secretion and peribronchial and airway inflammation characterized by eosinophil cell infiltration, along with elevated levels of Th2 cytokines (IL-4, IL-5, IL-13) in bronchoalveolar lavage fluids (BALFs). These parameters were further exacerbated in the OVA + CdCl2 group. Additionally, the OVA + CdCl2 group exhibited higher levels of the oxidative stress marker malondialdehyde (MDA), greater activity of glutathione peroxidase (GSH-Px), and higher phosphorylation of extracellular regulated kinase (ERK) in lung tissue. Treatment with U0126 (an ERK inhibitor) and α-tocopherol (an antioxidant) in the OVA + CdCl2 group resulted in reduced peribronchial and airway inflammation as well as decreased airway mucus secretion. These findings indicate that CdCl2 exacerbates airway inflammation in OVA-induced allergic asthma mice following airway exposure. ERK and oxidative stress are integral to this process, and the inhibition of these pathways significantly alleviates the adverse effects of CdCl2 on asthma exacerbation.
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Affiliation(s)
- Chendong Wu
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha 410005, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410005, China
| | - Xinyue Hu
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha 410005, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410005, China
| | - Yuanyuan Jiang
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha 410005, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410005, China
| | - Jiale Tang
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha 410005, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410005, China
| | - Huan Ge
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha 410005, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410005, China
| | - Shuanglinzi Deng
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha 410005, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410005, China
| | - Xiaozhao Li
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410005, China
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha 410005, China
| | - Juntao Feng
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha 410005, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410005, China
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Shao Y, Zheng L, Jiang Y. Cadmium toxicity and autophagy: a review. Biometals 2024:10.1007/s10534-023-00581-y. [PMID: 38277035 DOI: 10.1007/s10534-023-00581-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Accepted: 12/31/2023] [Indexed: 01/27/2024]
Abstract
Cadmium (Cd) is an important environmental pollutant that poses a threat to human health and represents a critical component of air pollutants, food sources, and cigarette smoke. Cd is a known carcinogen and has toxic effects on the environment and various organs in humans. Heavy metals within an organism are difficult to biodegrade, and those that enter the respiratory tract are difficult to remove. Autophagy is a key mechanism for counteracting extracellular (microorganisms and foreign bodies) or intracellular (damaged organelles and proteins that cannot be degraded by the proteasome) stress and represents a self-protective mechanism for eukaryotes against heavy metal toxicity. Autophagy maintains cellular homeostasis by isolating and gathering information about foreign chemicals associated with other molecular events. However, autophagy may trigger cell death under certain pathological conditions, including cancer. Autophagy dysfunction is one of the main mechanisms underlying Cd-induced cytotoxicity. In this review, the toxic effects of Cd-induced autophagy on different human organ systems were evaluated, with a focus on hepatotoxicity, nephrotoxicity, respiratory toxicity, and neurotoxicity. This review also highlighted the classical molecular pathways of Cd-induced autophagy, including the ROS-dependent signaling pathways, endoplasmic reticulum (ER) stress pathway, Mammalian target of rapamycin (mTOR) pathway, Beclin-1 and Bcl-2 family, and recently identified molecules associated with Cd. Moreover, research directions for Cd toxicity regarding autophagic function were proposed. This review presents the latest theories to comprehensively reveal autophagy behavior in response to Cd toxicity and proposes novel potential autophagy-targeted prevention and treatment strategies for Cd toxicity and Cd-associated diseases in humans.
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Affiliation(s)
- Yueting Shao
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
- School of Public Health, Guangzhou Medical University, Guangzhou, 511436, China
| | - Liting Zheng
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Yiguo Jiang
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China.
- School of Public Health, Guangzhou Medical University, Guangzhou, 511436, China.
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Luo J, Huang Y, Chen Y, Yuan Y, Li G, Cai S, Jian J, Yang S. Heme Oxygenase-1 Is Involved in the Repair of Oxidative Damage Induced by Oxidized Fish Oil in Litopenaeus vannamei by Sulforaphane. Mar Drugs 2023; 21:548. [PMID: 37888483 PMCID: PMC10607972 DOI: 10.3390/md21100548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/19/2023] [Accepted: 10/21/2023] [Indexed: 10/28/2023] Open
Abstract
Heme oxygenase-1 (HO-1), which could be highly induced under the stimulation of oxidative stress, functions in reducing the damage caused by oxidative stress, and sulforaphane (SFN) is an antioxidant. This study aims to investigate whether HO-1 is involved in the repair of oxidative damage induced by oxidized fish oil (OFO) in Litopenaeus vannamei by sulforaphane (SFN). The oxidative stress model of L. vannamei was established by feeding OFO feed (OFO accounts for 6%), and they were divided into the following four groups: control group (injected with dsRNA-EGFP and fed with common feed), dsRNA-HO-1 group (dsRNA-HO-1, common feed), dsRNA-HO-1 + SFN group (dsRNA-HO-1, supplement 50 mg kg-1 SFN feed), and SFN group (dsRNA-EGFP, supplement 50 mg kg-1 SFN feed). The results showed that the expression level of HO-1 in the dsRNA-HO-1 + SFN group was significantly increased compared with the dsRNA-HO-1 group (p < 0.05). The activities of SOD in muscle and GPX in hepatopancreas and serum of the dsRNA-HO-1 group were significantly lower than those of the control group, and MDA content in the dsRNA-HO-1 group was the highest among the four groups. However, SFN treatment increased the activities of GPX and SOD in hepatopancreas, muscle, and serum and significantly reduced the content of MDA (p < 0.05). SFN activated HO-1, upregulated the expression of antioxidant-related genes (CAT, SOD, GST, GPX, Trx, HIF-1α, Nrf2, prx 2, Hsp 70), and autophagy genes (ATG 3, ATG 5), and stabilized the expression of apoptosis genes (caspase 2, caspase 3) in the hepatopancreas (p < 0.05). In addition, knocking down HO-1 aggravated the vacuolation of hepatopancreas and increased the apoptosis of hepatopancreas, while the supplement of SFN could repair the vacuolation of hepatopancreas and reduce the apoptosis signal. In summary, HO-1 is involved in the repair of the oxidative damage induced by OFO in L. vannamei by SFN.
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Affiliation(s)
| | | | | | | | | | | | | | - Shiping Yang
- Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture & Key Laboratory of Control for Disease of Aquatic Animals, Guangdong Higher Education Institutes, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (J.L.); (Y.H.); (Y.C.); (Y.Y.); (G.L.); (S.C.); (J.J.)
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Chen C, Zhang S, Yang T, Wang C, Han G. Associations between environmental heavy metals exposure and preserved ratio impaired spirometry in the U.S. adults. Environ Sci Pollut Res 2023; 30:108274-108287. [PMID: 37749472 PMCID: PMC10611825 DOI: 10.1007/s11356-023-29688-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 06/23/2023] [Indexed: 09/27/2023]
Abstract
We examined 9556 individuals aged 18 to 79 years who had information on spirometry testing and heavy metals and used multivariable logistic or linear regression to evaluate associations between serum levels of cadmium, lead, and mercury and PRISm and lung function in U.S. adults, which were conducted first in all participants, and then separately in never/former smokers and current smokers. The overall prevalence of PRISm was 7.02%. High levels of serum cadmium were significantly associated with PRISm in all individuals, no matter in never/former smokers (quartile 4 vs 1, the OR = 2.517, 95% CI = 1.376-4.604, p-trend = 0.0077) and current smokers (quartile 4 vs 1, the OR = 2.201, 95% CI = 1.265-3.830, p-trend = 0.0020). Serum lead and mercury were not significantly correlated with PRISm, regardless of smoking status. Serum cadmium was strongly correlated with lower FEV1/FVC, regardless of smoking status. Besides, serum cadmium was also significantly related to lower FVC % predicted in never/former smokers and lower FEV1% predicted in current smokers. Serum lead was strongly correlated with lower FVC % predicted and FEV1/FVC in all individuals and never/former smokers. And serum mercury was significantly associated with decrements in FVC % predicted in all individuals and current smokers. These findings demonstrate that serum cadmium is associated with a higher risk of PRISm and lower lung function, with the most significant effect on FEV1/FVC in particular. Our results also indicate that exposure to lead and mercury negatively affects lung function in never/former smokers and current smokers, respectively.
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Affiliation(s)
- Chen Chen
- National Center for Respiratory MedicineNational Clinical Research Center for Respiratory DiseasesInstitute of Respiratory MedicineDepartment of Traditional Chinese Medicine for Pulmonary Diseases, Center of Respiratory Medicine, Chinese Academy of Medical Sciences, China-Japan Friendship Hospital, Beijing, 100029, People's Republic of China
| | - Shunan Zhang
- National Center for Respiratory MedicineNational Clinical Research Center for Respiratory DiseasesInstitute of Respiratory MedicineDepartment of Traditional Chinese Medicine for Pulmonary Diseases, Center of Respiratory Medicine, Chinese Academy of Medical Sciences, China-Japan Friendship Hospital, Beijing, 100029, People's Republic of China
| | - Ting Yang
- National Center for Respiratory MedicineNational Clinical Research Center for Respiratory DiseasesInstitute of Respiratory MedicineDepartment of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, Chinese Academy of Medical Sciences, China-Japan Friendship Hospital, Beijing, 100029, People's Republic of China.
| | - Chen Wang
- National Center for Respiratory MedicineNational Clinical Research Center for Respiratory DiseasesInstitute of Respiratory MedicineDepartment of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, Chinese Academy of Medical Sciences, China-Japan Friendship Hospital, Beijing, 100029, People's Republic of China
- Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, People's Republic of China
| | - Guiling Han
- National Center for Respiratory MedicineNational Clinical Research Center for Respiratory DiseasesInstitute of Respiratory MedicineDepartment of Traditional Chinese Medicine for Pulmonary Diseases, Center of Respiratory Medicine, Chinese Academy of Medical Sciences, China-Japan Friendship Hospital, Beijing, 100029, People's Republic of China
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6
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Racanelli AC, Choi AMK. CEACAM6: A Novel Marker of Chronic Obstructive Pulmonary Disease Susceptibility? Am J Respir Crit Care Med 2023; 207:1546-1548. [PMID: 37219336 PMCID: PMC10273108 DOI: 10.1164/rccm.202303-0610ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023] Open
Affiliation(s)
- Alexandra C Racanelli
- Division of Pulmonary and Critical Care Medicine, Joan and Sanford I Weill Department of Medicine, Weill Cornell Medicine New York, New York, USA and New York Presbyterian Hospital-Weill Cornell Medical Center New York, New York, USA
| | - Augustine M K Choi
- Division of Pulmonary and Critical Care Medicine, Joan and Sanford I Weill Department of Medicine, Weill Cornell Medicine New York, New York, USA and New York Presbyterian Hospital-Weill Cornell Medical Center New York, New York, USA
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Chen Y, Zhao A, Li R, Kang W, Wu J, Yin Y, Tong S, Li S, Chen J. Independent and combined associations of multiple-heavy-metal exposure with lung function: a population-based study in US children. Environ Geochem Health 2023:10.1007/s10653-023-01565-0. [PMID: 37097600 DOI: 10.1007/s10653-023-01565-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 03/30/2023] [Indexed: 06/19/2023]
Abstract
Previous research has found relationships between some single metals and lung function parameters. However, the role of simultaneous multi-metal exposure is poorly understood. The crucial period throughout childhood, when people are most susceptible to environmental dangers, has also been largely ignored. The study aimed to evaluate the joint and individual associations of 12 selected urinary metals with pediatric lung function measures using multi-pollutant approaches. A total of 1227 children aged 6-17 years from the National Health and Nutrition Examination Survey database of the 2007-2012 cycles were used. The metal exposure indicators were 12 urine metals adjusted for urine creatinine, including arsenic (As), barium (Ba), cadmium (Cd), cesium (Cs), cobalt (Co), mercury (Hg), molybdenum (Mo), lead (Pb), antimony (Sb), thallium (Tl), tungsten (Tu), and uranium (Ur). The outcomes of interest were lung function indices, including the 1st second of a forceful exhalation (FEV1), forced vital capacity (FVC), forced expiratory flow between 25 and 7% of vital capacity (FEF25-75%), and peak expiratory flow (PEF). Multivariate linear regression, quantile g-computation (QG-C), and Bayesian kernel machine regression models (BKMR) were adopted. A significantly negative overall effect of metal mixtures on FEV1 (β = - 161.70, 95% CI - 218.12, - 105.27; p < 0.001), FVC (β = - 182.69, 95% CI - 246.33, - 119.06; p < 0.001), FEF25-75% (β = - 178.86 (95% CI - 274.47, - 83.26; p < 0.001), and PEF (β = - 424.17, 95% CI - 556.55, - 291.80; p < 0.001) was observed. Pb had the largest negative contribution to the negative associations, with posterior inclusion probabilities (PIPs) of 1 for FEV1, FVC, and FEF25-75%, and 0.9966 for PEF. And Pb's relationship with lung function metrics showed to be nonlinear, with an approximate "L" shape. Potential interactions between Pb and Cd in lung function decline were observed. Ba was positively associated with lung function metrics. Metal mixtures were negatively associated with pediatric lung function. Pb might be a crucial element. Our findings highlight the need for prioritizing children's environmental health to protect them from later respiratory disorders and to guide future research into the toxic mechanisms of metal-mediated lung function injury in the pediatric population.
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Affiliation(s)
- Yiting Chen
- School of Public Health, Shanghai Jiao Tong University School of Medicine, 227 South Chongqing Road, Huangpu District, Shanghai, China
| | - Anda Zhao
- Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Rong Li
- School of Public Health, Shanghai Jiao Tong University School of Medicine, 227 South Chongqing Road, Huangpu District, Shanghai, China
| | - Wenhui Kang
- School of Public Health, Shanghai Jiao Tong University School of Medicine, 227 South Chongqing Road, Huangpu District, Shanghai, China
| | - Jinhong Wu
- Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yong Yin
- Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shilu Tong
- School of Public Health, Shanghai Jiao Tong University School of Medicine, 227 South Chongqing Road, Huangpu District, Shanghai, China
- Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- School of Public Health, Institute of Environment and Population Health, Anhui Medical University, Hefei, China
- School of Public Health and Social Work, Queensland University of Technology, Brisbane, Australia
| | - Shenghui Li
- School of Public Health, Shanghai Jiao Tong University School of Medicine, 227 South Chongqing Road, Huangpu District, Shanghai, China.
- MOE-Shanghai Key Laboratory of Children's Environmental Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Jianyu Chen
- College of Public Health, Shanghai University of Medicine & Health Sciences, 279 Zhouzhu Highway, Pudong New Area, Shanghai, 201318, China.
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Fishwick D, Barber C, Wiggans R. Chronic Obstructive Pulmonary Disease and Work: The Continuing Narrative. Semin Respir Crit Care Med 2023; 44:378-384. [PMID: 37068517 DOI: 10.1055/s-0043-1764408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
It has long been recognized that harmful inhaled workplace exposures can contribute to the development of chronic obstructive pulmonary disease (COPD). This article, intended for the clinician, summarizes some of this evidence and some areas of controversy. Current estimates based on pooled epidemiological analyses of population-based studies identify that approximately 14% of the burden of COPD (and 13% of the burden of chronic bronchitis) is attributable to such exposures. In addition to these approaches, various studies implicate specific exposures as contributing. Certain of these relating to cadmium, coal, and respirable crystalline silica are discussed in more detail. Despite this amassed evidence to date supporting associations between COPD and workplace exposures, there have been surprisingly few studies that have attempted to assess the attribution by experts of an occupational cause in cases of COPD. One study, using hypothetical cases of COPD, noted that while expert physicians were willing to make such an occupational link, this was only likely in cases with light smoking histories and a priori defined heavy occupational exposures. Relatively recent data relating to computed tomography (CT) scan appearances may give the clinician a further guide. Several studies from populations have now linked potentially harmful occupational exposures specifically with the presence of emphysema on CT scanning. It will be of interest to see if this finding, along with other clinical attributes of cases such as smoking and family histories, exclusion of asthma, genetic data, and the nature of workplace exposures, will increase the future diagnosis by clinicians of occupational COPD. In the interim, while better diagnostic approaches are developed, we suggest that consideration of an occupational cause is an important part of the clinical investigation of cases of COPD. Finally, we suggest that evidence-based workplace preventive strategies for occupational COPD should be informed by knowledge of which exposures are most important to reduce, and whether and when intervention to reduce exposure at an individual worker level is warranted.
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Affiliation(s)
- David Fishwick
- Centre for Occupational and Environmental Health, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Chris Barber
- Department of Respiratory Medicine, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, United Kingdom
| | - Ruth Wiggans
- Department of Respiratory Medicine, North Manchester General Hospital and the University of Manchester, Manchester, United Kingdom
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Kheradmand F, Zhang Y, Corry DB. Contribution of adaptive immunity to human COPD and experimental models of emphysema. Physiol Rev 2023; 103:1059-1093. [PMID: 36201635 PMCID: PMC9886356 DOI: 10.1152/physrev.00036.2021] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 09/15/2022] [Accepted: 09/20/2022] [Indexed: 02/01/2023] Open
Abstract
The pathophysiology of chronic obstructive pulmonary disease (COPD) and the undisputed role of innate immune cells in this condition have dominated the field in the basic research arena for many years. Recently, however, compelling data suggesting that adaptive immune cells may also contribute to the progressive nature of lung destruction associated with COPD in smokers have gained considerable attention. The histopathological changes in the lungs of smokers can be limited to the large or small airways, but alveolar loss leading to emphysema, which occurs in some individuals, remains its most significant and irreversible outcome. Critically, however, the question of why emphysema progresses in a subset of former smokers remained a mystery for many years. The recognition of activated and organized tertiary T- and B-lymphoid aggregates in emphysematous lungs provided the first clue that adaptive immune cells may play a crucial role in COPD pathophysiology. Based on these findings from human translational studies, experimental animal models of emphysema were used to determine the mechanisms through which smoke exposure initiates and orchestrates adaptive autoreactive inflammation in the lungs. These models have revealed that T helper (Th)1 and Th17 subsets promote a positive feedback loop that activates innate immune cells, confirming their role in emphysema pathogenesis. Results from genetic studies and immune-based discoveries have further provided strong evidence for autoimmunity induction in smokers with emphysema. These new findings offer a novel opportunity to explore the mechanisms underlying the inflammatory landscape in the COPD lung and offer insights for development of precision-based treatment to halt lung destruction.
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Affiliation(s)
- Farrah Kheradmand
- Department of Medicine, Baylor College of Medicine, Houston, Texas
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas
- Biology of Inflammation Center, Baylor College of Medicine, Houston, Texas
- Center for Translational Research on Inflammatory Diseases (CTRID), Michael E. DeBakey Department of Veterans Affairs Medical Center, Houston, Texas
| | - Yun Zhang
- Department of Medicine, Baylor College of Medicine, Houston, Texas
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas
| | - David B Corry
- Department of Medicine, Baylor College of Medicine, Houston, Texas
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas
- Biology of Inflammation Center, Baylor College of Medicine, Houston, Texas
- Center for Translational Research on Inflammatory Diseases (CTRID), Michael E. DeBakey Department of Veterans Affairs Medical Center, Houston, Texas
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10
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El-Azab MF, Wakiel AE, Nafea YK, Youssef ME. Role of cannabinoids and the endocannabinoid system in modulation of diabetic cardiomyopathy. World J Diabetes 2022; 13:387-407. [PMID: 35664549 PMCID: PMC9134026 DOI: 10.4239/wjd.v13.i5.387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/18/2021] [Accepted: 04/28/2022] [Indexed: 02/06/2023] Open
Abstract
Diabetic complications, chiefly seen in long-term situations, are persistently deleterious to a large extent, requiring multi-factorial risk reduction strategies beyond glycemic control. Diabetic cardiomyopathy is one of the most common deleterious diabetic complications, being the leading cause of mortality among diabetic patients. The mechanisms of diabetic cardiomyopathy are multi-factorial, involving increased oxidative stress, accumulation of advanced glycation end products (AGEs), activation of various pro-inflammatory and cell death signaling pathways, and changes in the composition of extracellular matrix with enhanced cardiac fibrosis. The novel lipid signaling system, the endocannabinoid system, has been implicated in the pathogenesis of diabetes and its complications through its two main receptors: Cannabinoid receptor type 1 and cannabinoid receptor type 2, alongside other components. However, the role of the endocannabinoid system in diabetic cardiomyopathy has not been fully investigated. This review aims to elucidate the possible mechanisms through which cannabinoids and the endocannabinoid system could interact with the pathogenesis and the development of diabetic cardiomyopathy. These mechanisms include oxidative/ nitrative stress, inflammation, accumulation of AGEs, cardiac remodeling, and autophagy. A better understanding of the role of cannabinoids and the endocannabinoid system in diabetic cardiomyopathy may provide novel strategies to manipulate such a serious diabetic complication.
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Affiliation(s)
- Mona F El-Azab
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
| | - Ahmed E Wakiel
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
| | - Yossef K Nafea
- Program of Biochemistry, McMaster University, Hamilton L8S 4L8, Ontario, Canada
| | - Mahmoud E Youssef
- Department of Pharmacology and Biochemistry, Delta University for Science and Technology, Mansoura 35511, New Cairo, Egypt
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11
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Li FJ, Surolia R, Singh P, Dsouza KG, Stephens CT, Wang Z, Liu RM, Bae S, Kim YI, Athar M, Dransfield MT, Antony VB. Fibrinogen mediates cadmium-induced macrophage activation and serves as a predictor of cadmium exposure in chronic obstructive pulmonary disease. Am J Physiol Lung Cell Mol Physiol 2022; 322:L593-L606. [PMID: 35200041 PMCID: PMC8993524 DOI: 10.1152/ajplung.00475.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 01/27/2022] [Accepted: 02/20/2022] [Indexed: 11/22/2022] Open
Abstract
The etiologies of chronic obstructive pulmonary disease (COPD) remain unclear. Cadmium (Cd) causes both pulmonary fibrosis and emphysema; however, the predictors for Cd exposure and the mechanisms by which Cd causes COPD remain unknown. We demonstrated that Cd burden was increased in lung tissue from subjects with COPD and this was associated with cigarette smoking. Fibrinogen levels increased markedly in lung tissue of patients with smoked COPD compared with never-smokers and control subjects. Fibrinogen concentration also correlated positively with lung Cd load, but inversely with the predicted % of FEV1 and FEV1/FVC. Cd enhanced the secretion of fibrinogen in a cdc2-dependent manner, whereas fibrinogen further mediated Cd-induced peptidylarginine deiminase 2 (PAD2)-dependent macrophage activation. Using lung fibroblasts from CdCl2-treated Toll-like receptor 4 (TLR4) wild-type and mutant mice, we demonstrated that fibrinogen enhanced Cd-induced TLR4-dependent collagen synthesis and cytokine/chemokine production. We further showed that fibrinogen complexed with connective tissue growth factor (CTGF), which in turn promoted the synthesis of plasminogen activator inhibitor-2 (PAI-2) and fibrinogen and inhibited fibrinolysis in Cd-treated mice. The amounts of fibrinogen were increased in the bronchoalveolar lavage fluid (BALF) of Cd-exposed mice. Positive correlations were observed between fibrinogen with hydroxyproline. Our data suggest that fibrinogen is involved in Cd-induced macrophage activation and increases in fibrinogen in patients with COPD may be used as a marker of Cd exposure and predict disease progression.
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Affiliation(s)
- Fu Jun Li
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Ranu Surolia
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Pooja Singh
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Kevin G Dsouza
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Crystal T Stephens
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Zheng Wang
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Rui-Ming Liu
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Sejong Bae
- Division of Preventive Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
- O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama
| | - Young-Il Kim
- Division of Preventive Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
- O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama
| | - Mohammad Athar
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Mark T Dransfield
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Veena B Antony
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
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12
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Li X, Li X, Sun R, Gao M, Wang H. Cadmium exposure enhances VE‑cadherin expression in endothelial cells via suppression of ROCK signaling. Exp Ther Med 2022; 23:355. [DOI: 10.3892/etm.2022.11282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Accepted: 02/22/2022] [Indexed: 11/06/2022] Open
Affiliation(s)
- Xiaorui Li
- Public Health Clinical Center Affiliated to Shandong University, Jinan, Shandong 250100, P.R. China
| | - Xiao Li
- Department of Pathophysiology, School of Traditional Chinese Medicine, Shandong University of Traditional Medicine, Jinan, Shandong 250014, P.R. China
| | - Rong Sun
- Advanced Medical Research Institute, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Mei Gao
- Shandong Medicine and Health Key Laboratory of Cardiac Electrophysiology and Arrhythmia, Department of Cardiology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, Shandong 250014, P.R. China
| | - Hui Wang
- Key Laboratory of Molecular and Nano Probes, Institute of Biomedical Sciences, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Ministry of Education, Jinan, Shandong 250014, P.R. China
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13
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Surolia R, Li FJ, Wang Z, Kashyap M, Srivastava RK, Traylor AM, Singh P, Dsouza KG, Kim H, Pittet JF, Zmijewski JW, Agarwal A, Athar M, Ahmad A, Antony VB. NETosis in the pathogenesis of acute lung injury following cutaneous chemical burns. JCI Insight 2021; 6:147564. [PMID: 34027893 PMCID: PMC8262367 DOI: 10.1172/jci.insight.147564] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 04/12/2021] [Indexed: 12/25/2022] Open
Abstract
Despite the high morbidity and mortality among patients with extensive cutaneous burns in the intensive care unit due to the development of acute respiratory distress syndrome, effective therapeutics remain to be determined. This is primarily because the mechanisms leading to acute lung injury (ALI) in these patients remain unknown. We test the hypothesis that cutaneous chemical burns promote lung injury due to systemic activation of neutrophils, in particular, toxicity mediated by the deployment of neutrophil extracellular traps (NETs). We also demonstrate the potential benefit of a peptidyl arginine deiminase 4 (PAD4) inhibitor to prevent NETosis and to preserve microvascular endothelial barrier function, thus reducing the severity of ALI in mice. Our data demonstrated that phenylarsine oxide (PAO) treatment of neutrophils caused increased intracellular Ca2+-associated PAD4 activity. A dermal chemical burn by lewisite or PAO resulted in PAD4 activation, NETosis, and ALI. NETs disrupted the barrier function of endothelial cells in human lung microvascular endothelial cell spheroids. Citrullinated histone 3 alone caused ALI in mice. Pharmacologic or genetic abrogation of PAD4 inhibited lung injury following cutaneous chemical burns. Cutaneous burns by lewisite and PAO caused ALI by PAD4-mediated NETosis. PAD4 inhibitors may have potential as countermeasures to suppress detrimental lung injury after chemical burns.
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Affiliation(s)
- Ranu Surolia
- Division of Pulmonary, Allergy and Critical Care, Department of Medicine
| | - Fu Jun Li
- Division of Pulmonary, Allergy and Critical Care, Department of Medicine
| | - Zheng Wang
- Division of Pulmonary, Allergy and Critical Care, Department of Medicine
| | | | | | | | - Pooja Singh
- Division of Pulmonary, Allergy and Critical Care, Department of Medicine
| | - Kevin G Dsouza
- Division of Pulmonary, Allergy and Critical Care, Department of Medicine
| | | | - Jean-Francois Pittet
- Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | | | - Anupam Agarwal
- Division of Nephrology, Department of Medicine.,Department of Veterans Affairs, Birmingham, Alabama, USA
| | | | - Aftab Ahmad
- Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Veena B Antony
- Division of Pulmonary, Allergy and Critical Care, Department of Medicine
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14
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Abstract
A number of metals are toxic and carcinogenic to humans. Reactive oxygen species (ROS) play an important role in metal carcinogenesis. Oxidative stress acts as the converging point among various stressors with ROS being the main intracellular signal transducer. In metal-transformed cells, persistent expression of p62 and erythroid 2-related factor 2 (Nrf2) result in apoptosis resistance, angiogenesis, inflammatory microenvironment, and metabolic reprogramming, contributing to overall mechanism of metal carcinogenesis. Autophagy, a conserved intracellular process, maintains cellular homeostasis by facilitating the turnover of protein aggregates, cellular debris, and damaged organelles. In addition to being a substrate of autophagy, p62 is also a crucial molecule in a myriad of cellular functions and in molecular events, which include oxidative stress, inflammation, apoptosis, cell proliferation, metabolic reprogramming, that modulate cell survival and tumor growth. The multiple functions of p62 are appreciated by its ability to interact with several key components involved in various oncogenic pathways. This review summarizes the current knowledge and progress in studies of p62 and metal carcinogenesis with emphasis on oncogenic pathways related to oxidative stress, inflammation, apoptosis, and metabolic reprogramming.
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Affiliation(s)
- Zhuo Zhang
- Department of Environmental Medicine, NYU School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Max Costa
- Department of Environmental Medicine, NYU School of Medicine, 341 East 25th Street, New York, NY 10010, USA.
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15
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Regmi S, Raut PK, Pathak S, Shrestha P, Park PH, Jeong JH. Enhanced viability and function of mesenchymal stromal cell spheroids is mediated via autophagy induction. Autophagy 2020; 17:2991-3010. [PMID: 33206581 DOI: 10.1080/15548627.2020.1850608] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Mesenchymal stromal cells (MSCs) have received attention as promising therapeutic agents for the treatment of various diseases. However, poor post-transplantation viability is a major hurdle in MSC-based therapy, despite encouraging results in many inflammatory disorders. Recently, three dimensional (3D)-cultured MSCs (MSC3D) were shown to have higher cell survival and enhanced anti-inflammatory effects, although the underlying mechanisms have not yet been elucidated. In this study, we investigated the molecular mechanisms by which MSC3D gain the potential for enhanced cell viability. Herein, we found that macroautophagy/autophagy was highly induced and ROS production was suppressed in MSC3D as compared to 2D-cultured MSCs (MSC2D). Interestingly, inhibition of autophagy induction caused decreased cell viability and increased apoptotic activity in MSC3D. Furthermore, modulation of ROS production was closely related to the survival and apoptosis of MSC3D. We also observed that HMOX1 (heme oxygenase 1) was significantly up-regulated in MSC3D. In addition, gene silencing of HMOX1 caused upregulation of ROS production and suppression of the genes related to autophagy. Moreover, inhibition of HIF1A (hypoxia inducible factor 1 subunit alpha) caused suppression of HMOX1 expression in MSC3D, indicating that the HIF1A-HMOX1 axis plays a crucial role in the modulation of ROS production and autophagy induction in MSC3D. Finally, the critical role of autophagy induction on improved therapeutic effects of MSC3D was further verified in dextran sulfate sodium (DSS)-induced murine colitis. Taken together, these results indicated that autophagy activation and modulation of ROS production mediated via the HIF1A-HMOX1 axis play pivotal roles in enhancing the viability of MSC3D.List of abbreviations:3D: three dimensional; 3MA: 3 methlyadenine; AMPK: AMP-activated protein kinase; Baf A1: bafilomycin A1; CFSE: carboxyfluorescein succinimidyl ester; CoCl2: cobalt chloride; CoPP: cobalt protoporphyrin; DSS: dextran sulfate sodium; ECM: extracellular matrix; FOXO3/FOXO3A: forkhead box O3; HIF1A: hypoxia inducible factor 1 subunit alpha; HMOX1/HO-1: heme oxygenase 1; HSCs: hematopoietic stem cells; IL1A/IL-1α: interleukin 1 alpha; IL1B/IL-1β: interleukin 1 beta; IL8: interleukin 8; KEAP1: kelch like ECH associated protein 1; LAMP1: lysosomal associated membrane protein 1; LAMP2: lysosomal associated membrane protein 2; MSC2D: 2D-cultured MSCs; MSC3D: 3D-cultured MSCs; MSCs: mesenchymal stromal cells; NFE2L2/NRF2: nuclear factor, erythroid 2 like 2; PGE2: prostaglandin E2; PIK3C3/VPS34: phosphatidylinositol 3-kinase catalytic subunit type 3; PINK1: PTEN induced kinase 1; ROS: reactive oxygen species; siRNA: small interfering RNA; SIRT1: sirtuin 1; SOD2: superoxide dismutase 2; SQSTM1/p62: sequestosome 1; TGFB/TGF-β: transforming growth factor beta.
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Affiliation(s)
- Shobha Regmi
- College of Pharmacy, Yeungnam University, Gyeongbuk, Gyeongsan, South Korea.,Department of Radiology, Stanford Medicine, Palo Alto, CA, USA
| | - Pawan Kumar Raut
- College of Pharmacy, Yeungnam University, Gyeongbuk, Gyeongsan, South Korea
| | - Shiva Pathak
- College of Pharmacy, Yeungnam University, Gyeongbuk, Gyeongsan, South Korea.,Division of Blood and Marrow Transplantation, Stanford University School of Medicine, Stanford, CA, USA
| | - Prakash Shrestha
- College of Pharmacy, Yeungnam University, Gyeongbuk, Gyeongsan, South Korea
| | - Pil-Hoon Park
- College of Pharmacy, Yeungnam University, Gyeongbuk, Gyeongsan, South Korea.,Research Institute of Cell Culture, Yeungnam University, Gyeongsan, South Korea
| | - Jee-Heon Jeong
- College of Pharmacy, Yeungnam University, Gyeongbuk, Gyeongsan, South Korea
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16
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Bublitz K, Böckmann S, Peters K, Hinz B. Cannabinoid-Induced Autophagy and Heme Oxygenase-1 Determine the Fate of Adipose Tissue-Derived Mesenchymal Stem Cells under Stressful Conditions. Cells 2020; 9:cells9102298. [PMID: 33076330 PMCID: PMC7602569 DOI: 10.3390/cells9102298] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 10/02/2020] [Accepted: 10/05/2020] [Indexed: 01/17/2023] Open
Abstract
The administration of adipose tissue-derived mesenchymal stem cells (ADMSCs) represents a promising therapeutic option after myocardial ischemia or myocardial infarction. However, their potential is reduced due to the high post-transplant cell mortality probably caused by oxidative stress and mitogen-deficient microenvironments. To identify protection strategies for ADMSCs, this study investigated the influence of the non-psychoactive phytocannabinoid cannabidiol (CBD) and the endocannabinoid analogue R(+)-methanandamide (MA) on the induction of heme oxygenase-1 (HO-1) and autophagy under serum-free conditions. At a concentration of 3 µM, CBD induced an upregulation of HO-1 mRNA and protein within 6 h, whereas for MA only a late and comparatively lower increase in the HO-1 protein could be detected after 48 h. In addition, both cannabinoids induced time- and concentration-dependent increases in LC3A/B-II protein, a marker of autophagy, and in metabolic activity. A participation of several cannabinoid-binding receptors in the effect on metabolic activity and HO-1 was excluded. Similarly, knockdown of HO-1 by siRNA or inhibition of HO-1 activity by tin protoporphyrin IX (SnPPIX) had no effect on CBD-induced autophagy and metabolic activity. On the other hand, the inhibition of autophagy by bafilomycin A1 led to a significant decrease in cannabinoid-induced metabolic activity and to an increase in apoptosis. Under these circumstances, a significant induction of HO-1 expression after 24 h could also be demonstrated for MA. Remarkably, inhibition of HO-1 by SnPPIX under conditions of autophagy deficit led to a significant reversal of apoptosis in cannabinoid-treated cells. In conclusion, the investigated cannabinoids increase metabolic viability of ADMSCs under serum-free conditions by inducing HO-1-independent autophagy but contribute to apoptosis under conditions of additional autophagy deficit via an HO-1-dependent pathway.
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Affiliation(s)
- Katharina Bublitz
- Institute of Pharmacology and Toxicology, Rostock University Medical Center, Schillingallee 70, D-18057 Rostock, Germany; (K.B.); (S.B.)
| | - Sabine Böckmann
- Institute of Pharmacology and Toxicology, Rostock University Medical Center, Schillingallee 70, D-18057 Rostock, Germany; (K.B.); (S.B.)
| | - Kirsten Peters
- Department of Cell Biology, Rostock University Medical Center, Schillingallee 69, D-18057 Rostock, Germany;
| | - Burkhard Hinz
- Institute of Pharmacology and Toxicology, Rostock University Medical Center, Schillingallee 70, D-18057 Rostock, Germany; (K.B.); (S.B.)
- Correspondence: ; Tel.: +49-381-494-5770
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17
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Böckmann S, Hinz B. Cannabidiol Promotes Endothelial Cell Survival by Heme Oxygenase-1-Mediated Autophagy. Cells 2020; 9:E1703. [PMID: 32708634 DOI: 10.3390/cells9071703] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 07/06/2020] [Accepted: 07/10/2020] [Indexed: 12/17/2022] Open
Abstract
Cannabidiol (CBD), a non-psychoactive cannabinoid, has been reported to mediate antioxidant, anti-inflammatory, and anti-angiogenic effects in endothelial cells. This study investigated the influence of CBD on the expression of heme oxygenase-1 (HO-1) and its functional role in regulating metabolic, autophagic, and apoptotic processes of human umbilical vein endothelial cells (HUVEC). Concentrations up to 10 µM CBD showed a concentration-dependent increase of HO-1 mRNA and protein and an increase of the HO-1-regulating transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2). CBD-induced HO-1 expression was not decreased by antagonists of cannabinoid-activated receptors (CB1, CB2, transient receptor potential vanilloid 1), but by the reactive oxygen species (ROS) scavenger N-acetyl-L-cysteine (NAC). The incubation of HUVEC with 6 µM CBD resulted in increased metabolic activity, while 10 µM CBD caused decreased metabolic activity and an induction of apoptosis, as demonstrated by enhanced caspase-3 cleavage. In addition, CBD triggered a concentration-dependent increase of the autophagy marker LC3A/B-II. Both CBD-induced LC3A/B-II levels and caspase-3 cleavage were reduced by NAC. The inhibition of autophagy by bafilomycin A1 led to apoptosis induction by 6 µM CBD and a further increase of the proapoptotic effect of 10 µM CBD. On the other hand, the inhibition of HO-1 activity with tin protoporphyrin IX (SnPPIX) or knockdown of HO-1 expression by Nrf2 siRNA was associated with a decrease in CBD-mediated autophagy and apoptosis. In summary, our data show for the first time ROS-mediated HO-1 expression in endothelial cells as a mechanism by which CBD mediates protective autophagy, which at higher CBD concentrations, however, can no longer prevent cell death inducing apoptosis.
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18
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Chen S, Qin L, Wu X, Fu X, Lin S, Chen D, Xiao G, Shao Z, Cao H. Moderate Fluid Shear Stress Regulates Heme Oxygenase-1 Expression to Promote Autophagy and ECM Homeostasis in the Nucleus Pulposus Cells. Front Cell Dev Biol 2020; 8:127. [PMID: 32195253 PMCID: PMC7064043 DOI: 10.3389/fcell.2020.00127] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 02/13/2020] [Indexed: 12/18/2022] Open
Abstract
In vertebrate, the nucleus pulposus (NP), which is an essential component of the intervertebral disk, is constantly impacted by fluid shear stress (FSS); however, molecular mechanism(s) through which FSS modulates the NP homeostasis is poorly understood. Here we show that FSS regulates the extracellular matrix (ECM) homeostasis in NP cells. A moderate dose of FSS (i.e., 12 dyne/cm2) increases the sulfated glycosaminoglycan (sGAG) content and protein levels of Col2a1 and Aggrecan and decreases those of matrix metalloproteinase 13 (MMP13) and a disintegrin and metalloproteinase with thrombospondin motif 5 (ADMATS5) in rat NP cells, while a higher dose of FSS (i.e., 24 dyne/cm2) displays opposite effects. Results from RNA sequencing analysis, quantitative real-time RT-PCR analysis and western blotting establish that the heme oxygenase-1 (HO-1) is a key downstream mediator of the FSS actions in NP cells. HO-1 knockdown abolishes FSS-induced alterations in ECM protein production and sGAG content in NP cells, which is reversed by HO-1 induction. Furthermore, FSS activates the autophagic pathway by increasing the LC3-II/LC3-I ratio, Beclin-1 protein level, and formation of autophagosome and autolysosome and thereby regulates ECM protein and sGAG production in a HO-1 dependent manner. Finally, we demonstrate that the intraflagellar transport (IFT) 88, a core trafficking protein of primary cilia, is critically involved in the HO-1-mediated autophagy activation and ECM protein and sGAG production in FSS-treated NP cells. Thus, we for the first time demonstrate that FSS plays an important role in maintaining ECM homeostasis through HO-1-dependent activation of autophagy in NP cells.
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Affiliation(s)
- Sheng Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, and Department of Biology, Southern University of Science and Technology, Shenzhen, China
| | - Lei Qin
- Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, and Department of Biology, Southern University of Science and Technology, Shenzhen, China
| | - Xiaohao Wu
- Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, and Department of Biology, Southern University of Science and Technology, Shenzhen, China
| | - Xuekun Fu
- Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, and Department of Biology, Southern University of Science and Technology, Shenzhen, China
| | - Sixiong Lin
- Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, and Department of Biology, Southern University of Science and Technology, Shenzhen, China.,Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Orthopedic Research Institute and Department of Spinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Di Chen
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL, United States
| | - Guozhi Xiao
- Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, and Department of Biology, Southern University of Science and Technology, Shenzhen, China
| | - Zengwu Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huiling Cao
- Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, and Department of Biology, Southern University of Science and Technology, Shenzhen, China
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19
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Wu Y, Wang Y, Gong S, Tang J, Zhang J, Li F, Yu B, Zhang Y, Kou J. Ruscogenin alleviates LPS-induced pulmonary endothelial cell apoptosis by suppressing TLR4 signaling. Biomed Pharmacother 2020; 125:109868. [PMID: 32036210 DOI: 10.1016/j.biopha.2020.109868] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 01/15/2020] [Accepted: 01/17/2020] [Indexed: 12/25/2022] Open
Abstract
Acute lung injury (ALI) or its most advanced form, acute respiratory distress syndrome (ARDS) is a severe inflammatory pulmonary process triggered by varieties of pathophysiological factors, among which apoptosis of pulmonary endothelial cells plays a critical role in the progression of ALI/ARDS. Ruscogenin (RUS) has been found to exert significant protective effect on ALI induced by lipopolysaccharides (LPS), but there is little information about its role in LPS-induced pulmonary endothelial cell apoptosis. The aim of the present study was to investigate the underlying mechanism in which RUS attenuates LPS-induced pulmonary endothelial cell apoptosis. Mice were challenged with LPS (5 mg/kg) by intratracheal instillation for 24 h to induce apoptosis of pulmonary endothelial cells in model group. RUS (three doses: 0.1, 0.3, and 1 mg/kg) was administrated orally 1 h prior to LPS challenge. The results showed that RUS could attenuate LPS-induced lung injury and pulmonary endothelial apoptosis significantly. And we observed that RUS inhibited the activation of TLR4/MYD88/NF-κB pathway in pulmonary endothelium after LPS treatment. In murine lung vascular endothelial cells (MLECs) we further confirmed that RUS (1 μmol/L) markedly ameliorated MLECs apoptosis by suppressing TLR4 signaling. By using TLR4 knockout mice we found that TLR4 was essential for the RUS-mediated eff ;ect on LPS-stimulated pulmonary endothelial apoptosis. Collectively, our results indicate that RUS plays a protective role against LPS-induced endothelial cell apoptosis via regulating TLR4 signaling, and may be a promising agent in the management of ALI.
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Affiliation(s)
- Yunhao Wu
- State Key Laboratory of Natural Products, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Pharmacology of Chinese Material Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, PR China
| | - Yuwei Wang
- State Key Laboratory of Natural Products, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Pharmacology of Chinese Material Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, PR China
| | - Shuaishuai Gong
- State Key Laboratory of Natural Products, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Pharmacology of Chinese Material Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, PR China
| | - Jiahui Tang
- State Key Laboratory of Natural Products, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Pharmacology of Chinese Material Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, PR China
| | - Jiazhi Zhang
- State Key Laboratory of Natural Products, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Pharmacology of Chinese Material Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, PR China
| | - Fang Li
- State Key Laboratory of Natural Products, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Pharmacology of Chinese Material Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, PR China
| | - Boyang Yu
- State Key Laboratory of Natural Products, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Pharmacology of Chinese Material Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, PR China
| | - Yuanyuan Zhang
- State Key Laboratory of Natural Products, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Pharmacology of Chinese Material Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, PR China.
| | - Junping Kou
- State Key Laboratory of Natural Products, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Pharmacology of Chinese Material Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, PR China.
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20
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Zou L, Lei H, Shen J, Liu X, Zhang X, Wu L, Hao J, Jiang W, Hu Z. HO-1 induced autophagy protects against IL-1 β-mediated apoptosis in human nucleus pulposus cells by inhibiting NF-κB. Aging (Albany NY) 2020; 12:2440-2452. [PMID: 32015215 PMCID: PMC7041769 DOI: 10.18632/aging.102753] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 01/07/2020] [Indexed: 01/01/2023]
Abstract
In this study, we investigated the role of heme oxygenase-1 (HO-1) in intervertebral disc degeneration (IDD) by assessing the effects of HO-1 overexpression on IL-1β-induced apoptosis in nucleus pulposus cells (NPCs). Immunohistochemical staining showed HO-1 expression to be lower in NPCs from IDD patients than from patients with lumbar vertebral fractures (LVF). Western blot analysis showed HO-1 and LC3-II/I levels to be lower in NP tissues from IDD patients than from LVF patients, suggesting suppression of autophagy in degenerative intervertebral disc. Consistent with that idea, autophagy was increased in HO-1-overexpressing NPCs while IL-1β-induced apoptosis was reduced. These effects were reversed by treatment with the early autophagy inhibitor 3-methyl adenine, which suggests HO-1-induced autophagy suppresses IL-1β-induced apoptosis in NPCs. HO-1 overexpression promoted autophagy by increasing levels of Beclin-1/PI3KC3 complex. Phospho-P65 levels were lower in HO-1-overexpressing NPCs, suggesting inhibition of NF-κB-mediated apoptosis. Our study thus demonstrates that HO-1 promotes autophagy by enhancing formation of Beclin-1/PI3KC3 complex and suppresses IL-1β-induced apoptosis by inhibiting NF-κB. We suggest that HO-1 is a potential therapeutic target to alleviate IDD.
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Affiliation(s)
- Luetao Zou
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Hongyan Lei
- Department of the First Clinical Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Jieliang Shen
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Xulin Liu
- Department of the First Clinical Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Xiang Zhang
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Longxi Wu
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Jie Hao
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Wei Jiang
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Zhenming Hu
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
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Xing R, Cheng X, Qi Y, Tian X, Yan C, Liu D, Han Y. Low-dose nicotine promotes autophagy of cardiomyocytes by upregulating HO-1 expression. Biochem Biophys Res Commun 2019; 522:1015-1021. [PMID: 31813548 DOI: 10.1016/j.bbrc.2019.11.086] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 11/14/2019] [Indexed: 12/16/2022]
Abstract
Nicotine as a major component of addiction in cigarettes has been reported to play protective roles in some pathological processes. It is reported that activation of the nicotinic acetylcholine receptor also has a cardioprotective effect. Thus, in our study, we investigated the effect and mechanism of nicotine on the autophagy of cardiomyocytes, and whether nicotine protects cardiomyocytes against palmitic acid (PA) injury. The results indicated that low-dose nicotine promoted neonatal mouse cardiac myocytes (NMCMs) autophagy and accelerated autophagic flux while inhibiting NMCMs apoptosis, but high-dose nicotine inhibited autophagy and promoted apoptosis. Moreover, low-dose nicotine upregulated heme oxygenase-1 (HO-1) expression and knocking down HO-1 abolished the effects of nicotine on the autophagy and apoptosis of NMCMs. Methyllycaconitine citrate (α7-nAChR blocker, MLA) inhibited HO-1 expression and the effects of nicotine on autophagy and apoptosis of NMCMs. Furthermore, low-dose nicotine improved the inhibited autophagy and increased apoptosis induced by palmitic acid (PA) in NMCMs and these effects were reversed by knocking down HO-1. In conclusion, our data suggested that low-dose nicotine promoted autophagy and inhibited apoptosis of cardiomyocytes by upregulating HO-1.
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Affiliation(s)
- Ruinan Xing
- Second Clinical College of Dalian Medical University, Dalian, Liaoning Province, 116044, China
| | - Xiaoli Cheng
- Department of Cardiology and Cardiovascular Research Institute of PLA, General Hospital of Northern Theater Command, Shenyang, Liaoning Province, 110016, China
| | - Yanping Qi
- Department of Cardiology and Cardiovascular Research Institute of PLA, General Hospital of Northern Theater Command, Shenyang, Liaoning Province, 110016, China
| | - Xiaoxiang Tian
- Department of Cardiology and Cardiovascular Research Institute of PLA, General Hospital of Northern Theater Command, Shenyang, Liaoning Province, 110016, China
| | - Chenghui Yan
- Department of Cardiology and Cardiovascular Research Institute of PLA, General Hospital of Northern Theater Command, Shenyang, Liaoning Province, 110016, China
| | - Dan Liu
- Department of Cardiology and Cardiovascular Research Institute of PLA, General Hospital of Northern Theater Command, Shenyang, Liaoning Province, 110016, China.
| | - Yaling Han
- Second Clinical College of Dalian Medical University, Dalian, Liaoning Province, 116044, China.
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Abstract
Apoptosis plays an essential role in homeostasis and pathogenesis of a variety of human diseases. Endothelial cells are exposed to various environmental and internal stress and endothelial apoptosis is a pathophysiological consequence of these stimuli. Pulmonary endothelial cell apoptosis initiates or contributes to progression of a number of lung diseases. This chapter will focus on the current understanding of the role of pulmonary endothelial cell apoptosis in the development of emphysema and acute lung injury (ALI) and the factors controlling pulmonary endothelial life and death.
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Chichger H, Rounds S, Harrington EO. Endosomes and Autophagy: Regulators of Pulmonary Endothelial Cell Homeostasis in Health and Disease. Antioxid Redox Signal 2019; 31:994-1008. [PMID: 31190562 PMCID: PMC6765061 DOI: 10.1089/ars.2019.7817] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 06/07/2019] [Indexed: 12/12/2022]
Abstract
Significance: Alterations in oxidant/antioxidant balance injure pulmonary endothelial cells and are important in the pathogenesis of lung diseases, such as Acute Respiratory Distress Syndrome (ARDS), ischemia/reperfusion injury, pulmonary arterial hypertension (PAH), and emphysema. Recent Advances: The endosomal and autophagic pathways regulate cell homeostasis. Both pathways support recycling or degradation of macromolecules or organelles, targeted to endosomes or lysosomes, respectively. Thus, both processes promote cell survival. However, with environmental stress or injury, imbalance in endosomal and autophagic pathways may enhance macromolecular or organelle degradation, diminish biosynthetic processes, and cause cell death. Critical Issues: While the role of autophagy in cellular homeostasis in pulmonary disease has been investigated, the role of the endosome in the lung vasculature is less known. Furthermore, autophagy can either decrease or exacerbate endothelial injury, depending upon inciting insult and disease process. Future Directions: Diseases affecting the pulmonary endothelium, such as emphysema, ARDS, and PAH, are linked to altered endosomal or autophagic processing, leading to enhanced degradation of macromolecules and potential cell death. Efforts to target this imbalance have yielded limited success as treatments for lung injuries, which may be due to the complexity of both processes. It is possible that endosomal trafficking proteins, such as Rab GTPases and late endosomal/lysosomal adaptor, MAPK and MTOR activator 1, may be novel therapeutic targets. While endocytosis or autophagy have been linked to improved function of the pulmonary endothelium in vitro and in vivo, further studies are needed to identify targets for modulating cellular homeostasis in the lung.
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Affiliation(s)
- Havovi Chichger
- Biomedical Research Group, Department of Biomedical and Forensic Sciences, Anglia Ruskin University, Cambridge, United Kingdom
| | - Sharon Rounds
- Vascular Research Laboratory, Providence Veterans Affairs Medical Center, Providence, Rhode Island
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Alpert Medical School of Brown University, Providence, Rhode Island
| | - Elizabeth O. Harrington
- Vascular Research Laboratory, Providence Veterans Affairs Medical Center, Providence, Rhode Island
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Alpert Medical School of Brown University, Providence, Rhode Island
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Qian X, Cheng H, Chen X. Transient receptor potential melastatin 2-mediated heme oxygenase-1 has a role for bacterial clearance by regulating autophagy in peritoneal macrophages during polymicrobial sepsis. Innate Immun 2019; 25:530-538. [PMID: 31533549 PMCID: PMC6900664 DOI: 10.1177/1753425919875796] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Our previous study indicated an important protective role of transient receptor
potential melastatin 2 (TRPM2) in controlling bacterial clearance in macrophages
during polymicrobial sepsis by regulating heme oxygenase-1. Autophagy is
necessary for macrophages to kill invasive bacteria. In the present study, TRPM2
knockout (KO) mice show decreased heme oxygenase-1 and autophagy in peritoneal
macrophages after caecal ligation and puncture surgery. Caecal ligation and
puncture-induced autophagy in peritoneal macrophages is dependent on heme
oxygenase-1. TRPM2 KO mice treated with heme oxygenase-1 inducer before caecal
ligation and puncture significantly increase autophagy of peritoneal
macrophages, bacterial clearance rate and survival rate. In addition, TRPM2 KO
mice treated with heme oxygenase-1 inducer before caecal ligation and puncture
significantly attenuate organ injury and systemic inflammation. These
improvements are reversed by autophagy inhibitor. Therefore, our findings
suggest that TRPM2-mediated heme oxygenase-1 has a role for bacterial clearance
possibly by regulating autophagy in peritoneal macrophages during polymicrobial
sepsis.
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Affiliation(s)
- XiaoWei Qian
- Department of Anaesthesia, Women's Hospital, Zhejiang University School of Medicine, PR China
| | - Hao Cheng
- Department of Anaesthesia, Women's Hospital, Zhejiang University School of Medicine, PR China.,Department of Anaesthesia, Lishui Municipal Central Hospital, PR China
| | - XinZhong Chen
- Department of Anaesthesia, Women's Hospital, Zhejiang University School of Medicine, PR China
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25
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Tan WD, Shen HM, Wong WF. Dysregulated autophagy in COPD: A pathogenic process to be deciphered. Pharmacol Res 2019; 144:1-7. [DOI: 10.1016/j.phrs.2019.04.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 04/02/2019] [Accepted: 04/02/2019] [Indexed: 10/27/2022]
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Antony VB, Thannickal VJ. Cellular Senescence in Chronic Obstructive Pulmonary Disease: Multifaceted and Multifunctional. Am J Respir Cell Mol Biol 2019; 59:135-136. [PMID: 30067090 DOI: 10.1165/rcmb.2018-0061ed] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Affiliation(s)
- Veena B Antony
- 1 Department of Medicine University of Alabama at Birmingham Birmingham, Alabama
| | - Victor J Thannickal
- 1 Department of Medicine University of Alabama at Birmingham Birmingham, Alabama
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Peng H, Guo T, Chen Z, Zhang H, Cai S, Yang M, Chen P, Guan C, Fang X. Hypermethylation of mitochondrial transcription factor A induced by cigarette smoke is associated with chronic obstructive pulmonary disease. Exp Lung Res 2019; 45:101-111. [PMID: 31198067 DOI: 10.1080/01902148.2018.1556748] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 11/21/2018] [Accepted: 12/04/2018] [Indexed: 02/08/2023]
Abstract
Purpose of the study: Cigarette smoking is a leading environmental contributor to chronic obstructive pulmonary disease (COPD), but its epigenetic regulation of mtTFA gene remains elusive. This study aims to explore the relationship of DNA methylation of mtTFA and cigarette smoking in COPD. Materials and Methods: We analyzed DNA methylation on mtTFA promoters in clinical samples from COPD patients and subjects with normal pulmonary function. Expression of mtTFA mRNA in the clinical samples and mtTFA mRNA and protein in human umbilical vein endothelial cells(HUVECs) treated with cigarette smoke extract (CSE) was evaluated. mtTFA mRNA and protein levels were measured to determine effects of demethylation agents on CSE-treated HUVECs. Results: The DNA methylation level of the mtTFA promoter was significantly increased in COPD group. Expression of mtTFA mRNA was downregulated in the lungs as a consequence of hypermethylation of mtTFA promoter. Expression of mtTFA mRNA and protein was downregulated in CSE-treated HUVECs as a consequence of hypermethylation of the mtTFA promoter. mtTFA expression in CSE-treated HUVECs was restored by the methylation inhibitor, 5-aza-2'-deoxycytidine(AZA). Conclusions: Cigarette smoke-induced hypermethylation of the mtTFA promoter is related to the initiation and progression of COPD. Our finding may provide a new strategy for the intervention of COPD by developing demethylation agents targeting mtTFA hypermethylation.
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Affiliation(s)
- Hong Peng
- a Department of Respiratory and Critical Care Medicine , The Second Xiangya Hospital of Central-South University , Changsha , PR China
- b b The Respiratory Disease Research Institute of Central South University , Changsha , PR China
- c c The Respiratory Disease Diagnosis and Treatment Center of Hunan Province , Changsha , PR China
| | - Ting Guo
- a Department of Respiratory and Critical Care Medicine , The Second Xiangya Hospital of Central-South University , Changsha , PR China
- b b The Respiratory Disease Research Institute of Central South University , Changsha , PR China
- c c The Respiratory Disease Diagnosis and Treatment Center of Hunan Province , Changsha , PR China
| | - Zhiyong Chen
- d d Department of Urology , Xiangya Hospital of Central-South University , Changsha , PR China
| | - Hongliang Zhang
- a Department of Respiratory and Critical Care Medicine , The Second Xiangya Hospital of Central-South University , Changsha , PR China
- b b The Respiratory Disease Research Institute of Central South University , Changsha , PR China
- c c The Respiratory Disease Diagnosis and Treatment Center of Hunan Province , Changsha , PR China
| | - Shan Cai
- a Department of Respiratory and Critical Care Medicine , The Second Xiangya Hospital of Central-South University , Changsha , PR China
- b b The Respiratory Disease Research Institute of Central South University , Changsha , PR China
- c c The Respiratory Disease Diagnosis and Treatment Center of Hunan Province , Changsha , PR China
| | - Min Yang
- a Department of Respiratory and Critical Care Medicine , The Second Xiangya Hospital of Central-South University , Changsha , PR China
- b b The Respiratory Disease Research Institute of Central South University , Changsha , PR China
- c c The Respiratory Disease Diagnosis and Treatment Center of Hunan Province , Changsha , PR China
| | - Ping Chen
- a Department of Respiratory and Critical Care Medicine , The Second Xiangya Hospital of Central-South University , Changsha , PR China
- b b The Respiratory Disease Research Institute of Central South University , Changsha , PR China
- c c The Respiratory Disease Diagnosis and Treatment Center of Hunan Province , Changsha , PR China
| | - Chaxiang Guan
- e Physiological Research Center , Xiangya Medical School of Central-South University , Changsha , PR China
| | - Xiang Fang
- f Department of Neurology , University of Texas Medical Branch , Galveston , Texas, USA
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Voic H, Li X, Jang JH, Zou C, Sundd P, Alder J, Rojas M, Chandra D, Randell S, Mallampalli RK, Tesfaigzi Y, Ryba T, Nyunoya T. RNA sequencing identifies common pathways between cigarette smoke exposure and replicative senescence in human airway epithelia. BMC Genomics 2019; 20:22. [PMID: 30626320 PMCID: PMC6325884 DOI: 10.1186/s12864-018-5409-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 12/26/2018] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Aging is affected by genetic and environmental factors, and cigarette smoking is strongly associated with accumulation of senescent cells. In this study, we wanted to identify genes that may potentially be beneficial for cell survival in response to cigarette smoke and thereby may contribute to development of cellular senescence. RESULTS Primary human bronchial epithelial cells from five healthy donors were cultured, treated with or without 1.5% cigarette smoke extract (CSE) for 24 h or were passaged into replicative senescence. Transcriptome changes were monitored using RNA-seq in CSE and non-CSE exposed cells and those passaged into replicative senescence. We found that, among 1534 genes differentially regulated during senescence and 599 after CSE exposure, 243 were altered in both conditions, representing strong enrichment. Pathways and gene sets overrepresented in both conditions belonged to cellular processes that regulate reactive oxygen species, proteasome degradation, and NF-κB signaling. CONCLUSIONS Our results offer insights into gene expression responses during cellular aging and cigarette smoke exposure, and identify potential molecular pathways that are altered by cigarette smoke and may also promote airway epithelial cell senescence.
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Affiliation(s)
- Hannah Voic
- 0000 0004 0504 9575grid.422569.eDivision of Natural Sciences, New College of Florida, Sarasota, FL USA
| | - Xiuying Li
- 0000 0004 1936 9000grid.21925.3dDepartment of Medicine, University of Pittsburgh, NW628 UPMC Montefiore, 3459 Fifth Avenue, Pittsburgh, PA 15213 USA ,0000 0004 0420 3665grid.413935.9VA Pittsburgh Healthcare System, Pittsburgh, PA USA
| | - Jun-Ho Jang
- 0000 0004 0454 5075grid.417046.0Cardiovascular Institute, Department of Medicine, Allegheny Health Network, Pittsburgh, PA USA
| | - Chunbin Zou
- 0000 0004 1936 9000grid.21925.3dDepartment of Medicine, University of Pittsburgh, NW628 UPMC Montefiore, 3459 Fifth Avenue, Pittsburgh, PA 15213 USA ,0000 0004 0420 3665grid.413935.9VA Pittsburgh Healthcare System, Pittsburgh, PA USA
| | - Prithu Sundd
- 0000 0004 1936 9000grid.21925.3dVascular Medicine Institute, Department of Medicine, University of Pittsburgh, Pittsburgh, PA USA
| | - Jonathan Alder
- 0000 0004 1936 9000grid.21925.3dDepartment of Medicine, University of Pittsburgh, NW628 UPMC Montefiore, 3459 Fifth Avenue, Pittsburgh, PA 15213 USA
| | - Mauricio Rojas
- 0000 0004 1936 9000grid.21925.3dDepartment of Medicine, University of Pittsburgh, NW628 UPMC Montefiore, 3459 Fifth Avenue, Pittsburgh, PA 15213 USA
| | - Divay Chandra
- 0000 0004 1936 9000grid.21925.3dDepartment of Medicine, University of Pittsburgh, NW628 UPMC Montefiore, 3459 Fifth Avenue, Pittsburgh, PA 15213 USA
| | - Scott Randell
- 0000 0001 1034 1720grid.410711.2Department of Cell and Molecular Physiology, University of North Carolina, Chapel Hill, NC USA
| | - Rama K. Mallampalli
- 0000 0004 1936 9000grid.21925.3dDepartment of Medicine, University of Pittsburgh, NW628 UPMC Montefiore, 3459 Fifth Avenue, Pittsburgh, PA 15213 USA ,0000 0004 0420 3665grid.413935.9VA Pittsburgh Healthcare System, Pittsburgh, PA USA
| | - Yohannes Tesfaigzi
- Lovelace Respiratory Research Institute, COPD program, Albuquerque, NM USA
| | - Tyrone Ryba
- 0000 0004 0504 9575grid.422569.eDivision of Natural Sciences, New College of Florida, Sarasota, FL USA
| | - Toru Nyunoya
- 0000 0004 1936 9000grid.21925.3dDepartment of Medicine, University of Pittsburgh, NW628 UPMC Montefiore, 3459 Fifth Avenue, Pittsburgh, PA 15213 USA ,0000 0004 0420 3665grid.413935.9VA Pittsburgh Healthcare System, Pittsburgh, PA USA
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Schwartz M, Böckmann S, Borchert P, Hinz B. SB202190 inhibits endothelial cell apoptosis via induction of autophagy and heme oxygenase-1. Oncotarget 2018; 9:23149-23163. [PMID: 29796178 PMCID: PMC5955409 DOI: 10.18632/oncotarget.25234] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 03/29/2018] [Indexed: 12/20/2022] Open
Abstract
Activation of the p38 mitogen-activated protein kinase (MAPK) pathway has been implicated in various detrimental events finally leading to endothelial dysfunction. The present study therefore investigates the impact of the p38 MAPK inhibitor SB202190 on the expression of the cytoprotective enzyme heme oxygenase-1 (HO-1) as well as metabolic activity, apoptosis and autophagy of endothelial cells. Using human umbilical vein endothelial cells (HUVEC) SB202190 was found to cause a time- and concentration-dependent induction of HO-1 protein. Induction of HO-1 protein expression was mimicked by SB203580, another p38 MAPK inhibitor, but not by SB202474, an inactive structural analogue of p38 MAPK inhibitors. HO-1 induction by both SB202190 and SB203580 was also demonstrated by analysis of mRNA expression. On the functional level, SB202190 was shown to increase metabolic activity and autophagy of HUVEC along with diminishing basal apoptosis. Treatment of cells with tin protoporphyrin IX (SnPPIX), a well-characterised HO-1 enzymatic inhibitor, or HO-1 siRNA left SB202190-modulated metabolic activity and autophagy virtually unaltered but caused a significant reversal of the anti-apoptotic action of SB202190. Conversely, however, HO-1 expression by SB202190 became completely suppressed by the autophagy inhibitor bafilomycin A1. Bafilomycin A1 likewise fully reversed effects of SB202190 on metabolic activity and apoptosis, albeit significantly inducing apoptosis per se. Collectively, this work demonstrates SB202190 to confer upstream induction of autophagy followed by HO-1 induction resulting in potential protective effects against apoptosis. On the other hand, our data oppose HO-1 to contribute to SB202190-mediated increases in metabolic activity and autophagy, respectively.
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Affiliation(s)
- Margit Schwartz
- Institute of Pharmacology and Toxicology, Rostock University Medical Center, Rostock, Germany
| | - Sabine Böckmann
- Institute of Pharmacology and Toxicology, Rostock University Medical Center, Rostock, Germany
| | - Philipp Borchert
- Institute of Pharmacology and Toxicology, Rostock University Medical Center, Rostock, Germany
| | - Burkhard Hinz
- Institute of Pharmacology and Toxicology, Rostock University Medical Center, Rostock, Germany
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Ganguly K, Levänen B, Palmberg L, Åkesson A, Lindén A. Cadmium in tobacco smokers: a neglected link to lung disease? Eur Respir Rev 2018; 27:27/147/170122. [PMID: 29592863 PMCID: PMC9488953 DOI: 10.1183/16000617.0122-2017] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 02/10/2018] [Indexed: 12/21/2022] Open
Abstract
Cadmium in tobacco smoke may contribute to the development of pulmonary emphysema. However, there is poor understanding of the mechanisms behind the pathogenic role of cadmium in this and other smoking-related lung diseases. The traditional focus on the total body burden of cadmium, estimated through analysis of urine, may not fully reflect the local burden of cadmium, since it is inhaled by smokers. Thus, assessing the local accumulation of cadmium in the lungs appears more relevant, given that there is tissue-specific retention of cadmium. In this review, we outline the principal sources of cadmium exposure and the clinical effects of occupational exposure. In addition, we review evidence on local cadmium and its association with alterations in innate immunity in tobacco smokers. Moreover, we scrutinise the data on cadmium as a cause of lung disease in translational models. We conclude that cadmium may contribute to smoking-related lung diseases, possibly via an altered redox balance and by making macrophages dysfunctional. However, there is a need for new studies on local cadmium levels and their relation to pathology in long-term tobacco smokers, as well as for more in-depth studies on cellular and molecular mechanisms, to elucidate the importance of cadmium in smoking-related lung diseases. Cadmium in tobacco smoke emerges as a potentially important pathogenic factor in smoking-related lung diseasehttp://ow.ly/msOm30irmg7
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Tomas-Hernández S, Blanco J, Rojas C, Roca-Martínez J, Ojeda-Montes MJ, Beltrán-Debón R, Garcia-Vallvé S, Pujadas G, Arola L, Mulero M. Resveratrol Potently Counteracts Quercetin Starvation-Induced Autophagy and Sensitizes HepG2 Cancer Cells to Apoptosis. Mol Nutr Food Res 2018; 62. [PMID: 29336118 DOI: 10.1002/mnfr.201700610] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 12/21/2017] [Indexed: 12/19/2022]
Abstract
SCOPE Resveratrol (RSV) has been described as a potent antioxidant, antisteatotic, and antitumor compound, and it has also been identified as a potent autophagy inducer. On the other hand, quercetin (QCT) is a dietary flavonoid with known antitumor, anti-inflammatory, and antidiabetic effects. Additionally, QCT increases autophagy. To study the hypothetical synergistic effect of both compounds, we test the combined effect of QCT and RSV on the autophagy process in HepG2 cells. METHODS AND RESULTS Autophagy is studied by western blotting, real-time RT-PCR, and cellular staining. Our results clearly indicate a bifunctional molecular effect of RSV. Both polyphenols are individually able to promote autophagy. Strikingly, when RSV is combined with QCT, it promotes a potent reduction of QCT-induced autophagy and influences proapoptotic signaling. CONCLUSION RSV acts differentially on the autophagic process depending on the cellular energetic state. We further characterize the molecular mechanisms related to this effect, and we observe that AMP-activated protein kinase (AMPK) phosphorylation, heme oxygenase 1 (HO-1) downregulation, lysosomal membrane permeabilization (LMP), and Zinc (Zn2+ ) dynamics could be important modulators of such RSV-related effects and could globally represent a promising strategy to sensitize cancer cells to QCT treatment.
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Affiliation(s)
- Sarah Tomas-Hernández
- Cheminformatic and Nutrition Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain
| | - Jordi Blanco
- Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat Rovira i Virgili, Reus, Spain
| | - Cristina Rojas
- Cheminformatic and Nutrition Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain
| | - Joel Roca-Martínez
- Cheminformatic and Nutrition Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain
| | - María José Ojeda-Montes
- Cheminformatic and Nutrition Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain
| | - Raúl Beltrán-Debón
- Cheminformatic and Nutrition Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain
| | - Santiago Garcia-Vallvé
- Cheminformatic and Nutrition Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain.,Technological Unit of Nutrition and Health, EURECAT-Technological Center of Catalonia, Reus, Spain
| | - Gerard Pujadas
- Cheminformatic and Nutrition Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain.,Technological Unit of Nutrition and Health, EURECAT-Technological Center of Catalonia, Reus, Spain
| | - Lluís Arola
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain.,Technological Unit of Nutrition and Health, EURECAT-Technological Center of Catalonia, Reus, Spain
| | - Miquel Mulero
- Cheminformatic and Nutrition Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain
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Moura-Martiniano NO, Machado-Ferreira E, Gazêta GS, Soares CAG. Relative transcription of autophagy-related genes in Amblyomma sculptum and Rhipicephalus microplus ticks. Exp Appl Acarol 2017; 73:401-428. [PMID: 29181673 DOI: 10.1007/s10493-017-0193-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 11/17/2017] [Indexed: 06/07/2023]
Abstract
Ticks endure stressful off-host periods and perform as vectors of a diversity of infectious agents, thus engaging pathways that expectedly demand for autophagy. Little is known of ticks' autophagy, a conserved eukaryotic machinery assisting in homeostasis processes that also participates in tissue-dependent metabolic functions. Here, the autophagy-related ATG4 (autophagin-1), ATG6 (beclin-1) and ATG8 (LC3) mRNAs from the human diseases vector Amblyomma sculptum and the cattle-tick Rhipicephalus microplus were identified. Comparative qPCR quantifications evidenced different transcriptional status for the ATG genes in the salivary glands (SG), ovaries and intestines of actively feeding ticks. These ATGs had increased relative transcription under nutrient-deprivation, as determined by validation tests with R. microplus embryo-derivative cells BME26 and A. sculptum SG explants incubations in HBSS. Starvation lead to 4-31.8× and ~ 60-500× increments on the ATGs mRNA loads in BME26 and A. sculptum SG explants, respectively. PI3K inhibitor 3MA treatment also affected ATGs expression in BME26. Some ATGs were more transcribed in the SGs than in the ovaries of cattle-ticks. Amblyomma sculptum/R. microplus interspecific comparisons showed that ATG4 and ATG6 were 0.18× less expressed in A. sculptum SGs, but ~ 10-100× more expressed in their ovaries when compared to R. microplus organs. ATG4 and ATG8a transcript loads were ~ 120× and ~ 40× higher, respectively, in A. sculptum intestines when compared to cattle-ticks of similar weight category. ATGs expression in A. sculptum intestines increased with tick weight, indicating Atgs contribution to intracellular blood digestion. Possible roles of the autophagy machinery and their organ-specific expression profile on vector biology are discussed.
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Affiliation(s)
- Nicole O Moura-Martiniano
- Laboratório de Genética Molecular de Eucariontes e Simbiontes, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Erik Machado-Ferreira
- Laboratório de Genética Molecular de Eucariontes e Simbiontes, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gilberto S Gazêta
- Laboratório de Referência Nacional em Vetores das Riquetsioses, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Carlos Augusto Gomes Soares
- Laboratório de Genética Molecular de Eucariontes e Simbiontes, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
- , Ilha do Fundão, CCS, Bloco A, Lab. A2-120. Rua Professor Rodolpho Paulo Rocco S/N, Rio de Janeiro, RJ, 21941-617, Brazil.
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Zhao X, Xing F, Cong Y, Zhuang Y, Han M, Wu Z, Yu S, Wei H, Wang X, Chen G. Antimony trichloride induces a loss of cell viability via reactive oxygen species-dependent autophagy in A549 cells. Int J Biochem Cell Biol 2017; 93:32-40. [DOI: 10.1016/j.biocel.2017.10.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 10/10/2017] [Accepted: 10/13/2017] [Indexed: 12/13/2022]
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So KY, Kim SH, Jung KT, Lee HY, Oh SH. MAPK/JNK1 activation protects cells against cadmium-induced autophagic cell death via differential regulation of catalase and heme oxygenase-1 in oral cancer cells. Toxicol Appl Pharmacol 2017; 332:81-91. [DOI: 10.1016/j.taap.2017.07.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Revised: 07/26/2017] [Accepted: 07/31/2017] [Indexed: 01/05/2023]
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Surate Solaligue DE, Rodríguez-Castillo JA, Ahlbrecht K, Morty RE. Recent advances in our understanding of the mechanisms of late lung development and bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2017; 313:L1101-L1153. [PMID: 28971976 DOI: 10.1152/ajplung.00343.2017] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/21/2017] [Accepted: 09/23/2017] [Indexed: 02/08/2023] Open
Abstract
The objective of lung development is to generate an organ of gas exchange that provides both a thin gas diffusion barrier and a large gas diffusion surface area, which concomitantly generates a steep gas diffusion concentration gradient. As such, the lung is perfectly structured to undertake the function of gas exchange: a large number of small alveoli provide extensive surface area within the limited volume of the lung, and a delicate alveolo-capillary barrier brings circulating blood into close proximity to the inspired air. Efficient movement of inspired air and circulating blood through the conducting airways and conducting vessels, respectively, generates steep oxygen and carbon dioxide concentration gradients across the alveolo-capillary barrier, providing ideal conditions for effective diffusion of both gases during breathing. The development of the gas exchange apparatus of the lung occurs during the second phase of lung development-namely, late lung development-which includes the canalicular, saccular, and alveolar stages of lung development. It is during these stages of lung development that preterm-born infants are delivered, when the lung is not yet competent for effective gas exchange. These infants may develop bronchopulmonary dysplasia (BPD), a syndrome complicated by disturbances to the development of the alveoli and the pulmonary vasculature. It is the objective of this review to update the reader about recent developments that further our understanding of the mechanisms of lung alveolarization and vascularization and the pathogenesis of BPD and other neonatal lung diseases that feature lung hypoplasia.
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Affiliation(s)
- David E Surate Solaligue
- 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, German Center for Lung Research, Giessen, Germany
| | - José Alberto Rodríguez-Castillo
- 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, German Center for Lung Research, Giessen, Germany
| | - Katrin Ahlbrecht
- 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, 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, German Center for Lung Research, Giessen, Germany
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Li ZY, Wu YF, Xu XC, Zhou JS, Wang Y, Shen HH, Chen ZH. Autophagy as a double-edged sword in pulmonary epithelial injury: a review and perspective. Am J Physiol Lung Cell Mol Physiol 2017; 313:L207-L217. [DOI: 10.1152/ajplung.00562.2016] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 04/11/2017] [Accepted: 04/30/2017] [Indexed: 01/11/2023] Open
Abstract
Pulmonary epithelial cells form the first line of defense of human airways against foreign irritants and also represent as the primary injury target of these pathogenic assaults. Autophagy is a revolutionary conserved ubiquitous process by which cytoplasmic materials are delivered to lysosomes for degradation when facing environmental and/or developmental changes, and emerging evidence suggests that autophagy plays pivotal but controversial roles in pulmonary epithelial injury. Here we review recent studies focusing on the roles of autophagy in regulating airway epithelial injury induced by various stimuli. Articles eligible for this purpose are divided into two groups according to the eventual roles of autophagy, either protective or deleterious. From the evidence summarized in this review, we draw several conclusions as follows: 1) in all cases when autophagy is decreased from its basal level, autophagy is protective; 2) when autophagy is deleterious, it is generally upregulated by stimulation; and 3) a plausible conclusion is that the endosomal/exosomal pathways may be associated with the deleterious function of autophagy in airway epithelial injury, although this needs to be clarified in future investigations.
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Affiliation(s)
- Zhou-Yang Li
- Department of Respiratory and Critical Care Medicine, Second Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang; and
| | - Yin-Fang Wu
- Department of Respiratory and Critical Care Medicine, Second Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang; and
| | - Xu-Chen Xu
- Department of Respiratory and Critical Care Medicine, Second Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang; and
| | - Jie-Sen Zhou
- Department of Respiratory and Critical Care Medicine, Second Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang; and
| | - Yong Wang
- Department of Respiratory and Critical Care Medicine, Second Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang; and
| | - Hua-Hao Shen
- Department of Respiratory and Critical Care Medicine, Second Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang; and
- State Key Lab of Respiratory Disease, Guangzhou, China
| | - Zhi-Hua Chen
- Department of Respiratory and Critical Care Medicine, Second Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang; and
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Wang G, Zhou H, Strulovici-Barel Y, Al-Hijji M, Ou X, Salit J, Walters MS, Staudt MR, Kaner RJ, Crystal RG. Role of OSGIN1 in mediating smoking-induced autophagy in the human airway epithelium. Autophagy 2017; 13:1205-1220. [PMID: 28548877 DOI: 10.1080/15548627.2017.1301327] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Enhanced macroautophagy/autophagy is recognized as a component of the pathogenesis of smoking-induced airway disease. Based on the knowledge that enhanced autophagy is linked to oxidative stress and the DNA damage response, both of which are linked to smoking, we used microarray analysis of the airway epithelium to identify smoking upregulated genes known to respond to oxidative stress and the DNA damage response. This analysis identified OSGIN1 (oxidative stress induced growth inhibitor 1) as significantly upregulated by smoking, in both the large and small airway epithelium, an observation confirmed by an independent small airway microarray cohort, TaqMan PCR of large and small airway samples and RNA-Seq of small airway samples. High and low OSGIN1 expressors have different autophagy gene expression patterns in vivo. Genome-wide correlation of RNAseq analysis of airway basal/progenitor cells showed a direct correlation of OSGIN1 mRNA levels to multiple classic autophagy genes. In vitro cigarette smoke extract exposure of primary airway basal/progenitor cells was accompanied by a dose-dependent upregulation of OSGIN1 and autophagy induction. Lentivirus-mediated expression of OSGIN1 in human primary basal/progenitor cells induced puncta-like staining of MAP1LC3B and upregulation of MAP1LC3B mRNA and protein and SQSTM1 mRNA expression level in a dose and time-dependent manner. OSGIN1-induction of autophagosome, amphisome and autolysosome formation was confirmed by colocalization of MAP1LC3B with SQSTM1 or CD63 (endosome marker) and LAMP1 (lysosome marker). Both OSGIN1 overexpression and knockdown enhanced the smoking-evoked autophagic response. Together, these observations support the concept that smoking-induced upregulation of OSGIN1 is one link between smoking-induced stress and enhanced-autophagy in the human airway epithelium.
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Affiliation(s)
- Guoqing Wang
- a Department of Genetic Medicine , Weill Cornell Medical College , New York , NY , USA
| | - Haixia Zhou
- a Department of Genetic Medicine , Weill Cornell Medical College , New York , NY , USA.,b Department of Respiratory Medicine , West China Hospital Sichuan University , Sichuan , China
| | - Yael Strulovici-Barel
- a Department of Genetic Medicine , Weill Cornell Medical College , New York , NY , USA
| | - Mohammed Al-Hijji
- a Department of Genetic Medicine , Weill Cornell Medical College , New York , NY , USA.,c Weill Cornell Medical College-Qatar , Doha , Qatar
| | - Xuemei Ou
- a Department of Genetic Medicine , Weill Cornell Medical College , New York , NY , USA.,b Department of Respiratory Medicine , West China Hospital Sichuan University , Sichuan , China
| | - Jacqueline Salit
- a Department of Genetic Medicine , Weill Cornell Medical College , New York , NY , USA
| | - Matthew S Walters
- a Department of Genetic Medicine , Weill Cornell Medical College , New York , NY , USA
| | - Michelle R Staudt
- a Department of Genetic Medicine , Weill Cornell Medical College , New York , NY , USA
| | - Robert J Kaner
- a Department of Genetic Medicine , Weill Cornell Medical College , New York , NY , USA.,d Department of Medicine , Weill Cornell Medical College , New York , NY , USA
| | - Ronald G Crystal
- a Department of Genetic Medicine , Weill Cornell Medical College , New York , NY , USA
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Fujiki K, Inamura H, Miyayama T, Matsuoka M. Involvement of Notch1 signaling in malignant progression of A549 cells subjected to prolonged cadmium exposure. J Biol Chem 2017; 292:7942-7953. [PMID: 28302721 PMCID: PMC5427272 DOI: 10.1074/jbc.m116.759134] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 03/14/2017] [Indexed: 12/13/2022] Open
Abstract
Cadmium exposure is known to increase lung cancer risk, but the underlying molecular mechanisms in cadmium-stimulated progression of malignancy are unclear. Here, we examined the effects of prolonged cadmium exposure on the malignant progression of A549 human lung adenocarcinoma cells and the roles of Notch1, hypoxia-inducible factor 1α (HIF-1α), and insulin-like growth factor 1 receptor (IGF-1R)/Akt/extracellular signal-regulated kinase (ERK)/p70 S6 kinase 1 (S6K1) signaling pathways. Exposing A549 cells to 10 or 20 μm cadmium chloride (CdCl2) for 9-15 weeks induced a high proliferative potential, the epithelial-mesenchymal transition (EMT), stress fiber formation, high cell motility, and resistance to antitumor drugs. Of note, the CdCl2 exposure increased the levels of the Notch1 intracellular domain and of the downstream Notch1 target genes Snail and Slug. Strikingly, siRNA-mediated Notch1 silencing partially suppressed the CdCl2-induced EMT, stress fiber formation, high cell motility, and antitumor drug resistance. In addition, we found that prolonged CdCl2 exposure induced reduction of E-cadherin in BEAS-2B human bronchial epithelial cells and antitumor drug resistance in H1975 human tumor-derived non-small-cell lung cancer cells depending on Notch1 signaling. Moreover, Notch1, HIF-1α, and IGF-1R/Akt/ERK/S6K1 activated each other to induce EMT in the CdCl2-exposed A549 cells. These results suggest that Notch1, along with HIF-1α and IGF-1R/Akt/ERK/S6K1 signaling pathways, promotes malignant progression stimulated by prolonged cadmium exposure in this lung adenocarcinoma model.
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Affiliation(s)
- Kota Fujiki
- From the Department of Hygiene and Public Health I, Tokyo Women's Medical University, Tokyo 162-8666, Japan
| | - Hisako Inamura
- From the Department of Hygiene and Public Health I, Tokyo Women's Medical University, Tokyo 162-8666, Japan
| | - Takamitsu Miyayama
- From the Department of Hygiene and Public Health I, Tokyo Women's Medical University, Tokyo 162-8666, Japan
| | - Masato Matsuoka
- From the Department of Hygiene and Public Health I, Tokyo Women's Medical University, Tokyo 162-8666, Japan
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Li Y, Yu G, Yuan S, Tan C, Lian P, Fu L, Hou Q, Xu B, Wang H. Cigarette Smoke-Induced Pulmonary Inflammation and Autophagy Are Attenuated in Ephx2-Deficient Mice. Inflammation 2017; 40:497-510. [PMID: 28028752 PMCID: PMC5357505 DOI: 10.1007/s10753-016-0495-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Cigarette smoke (CS) increases the risk of chronic obstructive pulmonary disease (COPD) by causing inflammation, emphysema, and reduced lung function. Additionally, CS can induce autophagy which contributes to COPD. Arachidonic acid-derived epoxyeicosatrienoic acids (EETs) have promising anti-inflammatory properties that may protect the heart and liver by regulating autophagy. For this reason, the effect of decreased soluble epoxide hydrolase (sEH, Ephx2)-mediated EET hydrolysis on inflammation, emphysema, lung function, and autophagy was here studied in CS-induced COPD in vivo. Adult male wild-type (WT) C57BL/6J and Ephx2−/− mice were exposed to air or CS for 12 weeks, and lung inflammatory responses, air space enlargement (emphysema), lung function, and autophagy were assessed. Lungs of Ephx2−/− mice had a less pronounced inflammatory response and less autophagy with mild distal airspace enlargement accompanied by restored lung function and steady weight gain. These findings support the idea that Ephx2 may hold promise as a therapeutic target for COPD induced by CS, and it may be protective property by inhibiting autophagy.
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Affiliation(s)
- Yunxiao Li
- The Department of Respiratory Medicine, Beijing Friendship Hospital, Capital Medical University, No. 95 Yong An Road, Xichen District, Beijing, 100050, China
| | - Ganggang Yu
- The Department of Respiratory Medicine, Beijing Friendship Hospital, Capital Medical University, No. 95 Yong An Road, Xichen District, Beijing, 100050, China
| | - Shaopeng Yuan
- Beijing Key Laboratory of New Drug Mechanisms and Pharmacological Evaluation Study, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China
| | - Chunting Tan
- The Department of Respiratory Medicine, Beijing Friendship Hospital, Capital Medical University, No. 95 Yong An Road, Xichen District, Beijing, 100050, China
| | - Puqiao Lian
- Beijing Key Laboratory of New Drug Mechanisms and Pharmacological Evaluation Study, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China
| | - Lixia Fu
- Beijing Key Laboratory of New Drug Mechanisms and Pharmacological Evaluation Study, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China
| | - Qi Hou
- Beijing Key Laboratory of New Drug Mechanisms and Pharmacological Evaluation Study, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China
| | - Bo Xu
- The Department of Respiratory Medicine, Beijing Friendship Hospital, Capital Medical University, No. 95 Yong An Road, Xichen District, Beijing, 100050, China
| | - Haoyan Wang
- The Department of Respiratory Medicine, Beijing Friendship Hospital, Capital Medical University, No. 95 Yong An Road, Xichen District, Beijing, 100050, China.
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Li FJ, Surolia R, Li H, Wang Z, Liu G, Liu RM, Mirov SB, Athar M, Thannickal VJ, Antony VB. Low-dose cadmium exposure induces peribronchiolar fibrosis through site-specific phosphorylation of vimentin. Am J Physiol Lung Cell Mol Physiol 2017; 313:L80-L91. [PMID: 28450285 PMCID: PMC5538875 DOI: 10.1152/ajplung.00087.2017] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 04/18/2017] [Accepted: 04/18/2017] [Indexed: 02/08/2023] Open
Abstract
Exposure to cadmium (Cd) has been associated with development of chronic obstructive lung disease (COPD). The mechanisms and signaling pathways whereby Cd causes pathological peribronchiolar fibrosis, airway remodeling, and subsequent airflow obstruction remain unclear. We aimed to evaluate whether low-dose Cd exposure induces vimentin phosphorylation and Yes-associated protein 1 (YAP1) activation leading to peribronchiolar fibrosis and subsequent airway remodeling. Our data demonstrate that Cd induces myofibroblast differentiation and extracellular matrix (ECM) deposition around small (<2 mm in diameter) airways. Upon Cd exposure, α-smooth muscle actin (α-SMA) expression and the production of ECM proteins, including fibronectin and collagen-1, are markedly induced in primary human lung fibroblasts. Cd induces Smad2/3 activation and the translocation of both Smad2/3 and Yes-associated protein 1 (YAP1) into the nucleus. In parallel, Cd induces AKT and cdc2 phosphorylation and downstream vimentin phosphorylation at Ser39 and Ser55, respectively. AKT and cdc2 inhibitors block Cd-induced vimentin fragmentation and secretion in association with inhibition of α-SMA expression, ECM deposition, and collagen secretion. Furthermore, vimentin silencing abrogates Cd-induced α-SMA expression and decreases ECM production. Vimentin-deficient mice are protected from Cd-induced peribronchiolar fibrosis and remodeling. These findings identify two specific sites on vimentin that are phosphorylated by Cd and highlight the functional significance of vimentin phosphorylation in YAP1/Smad3 signaling that mediates Cd-induced peribronchiolar fibrosis and airway remodeling.
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Affiliation(s)
- Fu Jun Li
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Ranu Surolia
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Huashi Li
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Zheng Wang
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Gang Liu
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Rui-Ming Liu
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Sergey B Mirov
- Department of Physics, University of Alabama at Birmingham, Birmingham, Alabama; and
| | - Mohammad Athar
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Victor J Thannickal
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Veena B Antony
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama;
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Rossi M, Thierry A, Delbauve S, Preyat N, Soares MP, Roumeguère T, Leo O, Flamand V, Le Moine A, Hougardy JM. Specific expression of heme oxygenase-1 by myeloid cells modulates renal ischemia-reperfusion injury. Sci Rep 2017; 7:197. [PMID: 28298633 DOI: 10.1038/s41598-017-00220-w] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 02/14/2017] [Indexed: 12/21/2022] Open
Abstract
Renal ischemia-reperfusion injury (IRI) is a major risk factor for delayed graft function in renal transplantation. Compelling evidence exists that the stress-responsive enzyme, heme oxygenase-1 (HO-1) mediates protection against IRI. However, the role of myeloid HO-1 during IRI remains poorly characterized. Mice with myeloid-restricted deletion of HO-1 (HO-1M-KO), littermate (LT), and wild-type (WT) mice were subjected to renal IRI or sham procedures and sacrificed after 24 hours or 7 days. In comparison to LT, HO-1M-KO exhibited significant renal histological damage, pro-inflammatory responses and oxidative stress 24 hours after reperfusion. HO-1M-KO mice also displayed impaired tubular repair and increased renal fibrosis 7 days after IRI. In WT mice, HO-1 induction with hemin specifically upregulated HO-1 within the CD11b+ F4/80lo subset of the renal myeloid cells. Prior administration of hemin to renal IRI was associated with significant increase of the renal HO-1+ CD11b+ F4/80lo myeloid cells in comparison to control mice. In contrast, this hemin-mediated protection was abolished in HO-1M-KO mice. In conclusion, myeloid HO-1 appears as a critical protective pathway against renal IRI and could be an interesting therapeutic target in renal transplantation.
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Jardim FR, de Rossi FT, Nascimento MX, da Silva Barros RG, Borges PA, Prescilio IC, de Oliveira MR. Resveratrol and Brain Mitochondria: a Review. Mol Neurobiol 2018; 55:2085-101. [DOI: 10.1007/s12035-017-0448-z] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 02/07/2017] [Indexed: 12/24/2022]
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Tao C, Tang Y, Zhang L, Tian Y, Zhang Y. Atomization method for verifying size effects of inhalable particles on lung damage of mice. Sci Total Environ 2017; 579:1476-1484. [PMID: 27914648 DOI: 10.1016/j.scitotenv.2016.11.150] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Revised: 11/18/2016] [Accepted: 11/21/2016] [Indexed: 06/06/2023]
Abstract
To explore the size effects of inhalable particles on lung damage, aqueous aerosol containing cadmium was studied as a model to design a new type of two-stage atomization device that was composed of two adjustable parts with electronic ultrasonic atomization and pneumatic atomization. The working parameters and effectiveness of this device were tested with H2O atomization and CdCl2 inhalation, respectively. By gravimetrically detecting the mass concentrations of PM2.5 and PM10 and analysing the particle size with a laser sensor, we confirmed the particle size distribution of the aqueous aerosol produced by the new device under different working conditions. Then, we conducted experiments in male Kunming mice that inhaled CdCl2 to determine the size effects of inhalable particles on lung damage and to confirm the effectiveness of the device. The new device could effectively control the particle size in the aqueous aerosol. The inhaled CdCl2 entered and injured the lungs of the mice by causing tissue damage, oxidative stress, increasing endoplasmic reticulum stress and triggering an inflammatory response, which might be related to where the particles deposited. The smaller particles in the aqueous aerosol atomized by the new two-stage atomization device deposited deeper into lung causing more damage. This device could provide a new method for animal experiments involving inhalation with water-soluble toxins.
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Affiliation(s)
- Chen Tao
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Yue Tang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Lan Zhang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Yonggang Tian
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Yingmei Zhang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
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Wang JL, Chen Y, Song XQ, Lu ML, Zhao B, Ma L, Chen EZ, Mao EQ. Biliary tract external drainage protects against multiple organs injuries of severe acute pancreatitis rats via heme oxygenase-1 upregulation. Pancreatology 2017; 17:219-227. [PMID: 28209258 DOI: 10.1016/j.pan.2017.01.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 12/25/2016] [Accepted: 01/30/2017] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To investigate the effect of biliary tract external drainage (BTED) on severe acute pancreatitis (SAP) in rats and the relationship with heme oxygenase-1 (HO-1) pathway. METHODS Thirty SD rats weighing 250-300 g were randomly assigned into five groups (n = 6): sham surgery (SS) group, SAP group, SAP + BTED group, SAP + zinc protoporphyrin IX (ZnPP) group, SAP + BTED + ZnPP group. The SAP model was induced via retrograde injection of 4% sodium taurocholate (1 mL/kg) into biliopancreatic duct through duodenal wall. BTED was performed by inserting a cannula into the bile duct of SAP rats. Tissue and blood samples were collected 24 h after surgery. Pathological changes in organs were scored. The level of amylase, alanine transaminase (ALT), aspartate aminotransferase (AST), diamine oxidase (DAO), lipopolysaccharide (LPS), myeloperoxidase (MPO) and ability to inhibit hydroxyl radical(·OH) in serum were measured. The expression of hemeoxygenase-1 (HO-1), tumor necrosis factor-α (TNF-α), and interleukin-6 (IL-6) in tissues were analyzed by RT- PCR and western-blot. RESULTS Organs damage in SAP rats was significantly alleviated by BTED (p < 0.05). Compared to the SAP group, the serum level of amylase, ALT, AST, DAO, MPO, and LPS were significantly lower in the SAP + BTED group, and the ability to inhibit ·OH was significantly higher (p < 0.05). The BETD treatment led to a significant reduction of TNF-α, IL-6 level and a significant increase of HO-1 level in tissues than in SAP rats (p < 0.05). ZnPP significantly inhibited all above mentioned changes. CONCLUSIONS BTED protected multiple organs against SAP related injuries via HO-1 upregulation.
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Affiliation(s)
- Jin-Long Wang
- Department of Emergency Intensive Care Unit, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| | - Ying Chen
- Department of Emergency Intensive Care Unit, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| | - Xiao-Qing Song
- Department of Emergency Intensive Care Unit, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| | - Mei-Ling Lu
- Department of Emergency Intensive Care Unit, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| | - Bing Zhao
- Department of Emergency Intensive Care Unit, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| | - Li Ma
- Department of Emergency Intensive Care Unit, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| | - Er-Zhen Chen
- Department of Emergency Intensive Care Unit, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| | - En-Qiang Mao
- Department of Emergency Intensive Care Unit, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
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Surolia R, Li FJ, Wang Z, Li H, Liu G, Zhou Y, Luckhardt T, Bae S, Liu RM, Rangarajan S, de Andrade J, Thannickal VJ, Antony VB. 3D pulmospheres serve as a personalized and predictive multicellular model for assessment of antifibrotic drugs. JCI Insight 2017; 2:e91377. [PMID: 28138565 DOI: 10.1172/jci.insight.91377] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a fatal progressive fibrotic lung disease characterized by the presence of invasive myofibroblasts in the lung. Currently, there are only two FDA-approved drugs (pirfenidone and nintedanib) for the treatment of IPF. There are no defined criteria to guide specific drug therapy. New methodologies are needed not only to predict personalized drug therapy, but also to screen novel molecules that are on the horizon for treatment of IPF. We have developed a model system that exploits the invasive phenotype of IPF lung tissue. This ex vivo 3D model uses lung tissue from patients to develop pulmospheres. Pulmospheres are 3D spheroids composed of cells derived exclusively from primary lung biopsies and inclusive of lung cell types reflective of those in situ, in the patient. We tested the pulmospheres of 20 subjects with IPF and 9 control subjects to evaluate the responsiveness of individual patients to antifibrotic drugs. Clinical parameters and outcomes were also followed in the same patients. Our results suggest that pulmospheres simulate the microenvironment in the lung and serve as a personalized and predictive model for assessing responsiveness to antifibrotic drugs in patients with IPF.
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Affiliation(s)
- Ranu Surolia
- Division of Pulmonary, Allergy, and Critical Care Medicine and
| | - Fu Jun Li
- Division of Pulmonary, Allergy, and Critical Care Medicine and
| | - Zheng Wang
- Division of Pulmonary, Allergy, and Critical Care Medicine and
| | - Huashi Li
- Division of Pulmonary, Allergy, and Critical Care Medicine and
| | - Gang Liu
- Division of Pulmonary, Allergy, and Critical Care Medicine and
| | - Yong Zhou
- Division of Pulmonary, Allergy, and Critical Care Medicine and
| | - Tracy Luckhardt
- Division of Pulmonary, Allergy, and Critical Care Medicine and
| | - Sejong Bae
- Division of Preventative Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Rui-Ming Liu
- Division of Pulmonary, Allergy, and Critical Care Medicine and
| | | | - Joao de Andrade
- Division of Pulmonary, Allergy, and Critical Care Medicine and.,Birmingham VA Medical Center, Birmingham, Alabama, USA
| | - Victor J Thannickal
- Division of Pulmonary, Allergy, and Critical Care Medicine and.,Birmingham VA Medical Center, Birmingham, Alabama, USA
| | - Veena B Antony
- Division of Pulmonary, Allergy, and Critical Care Medicine and
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So K, Oh S. Heme oxygenase-1-mediated apoptosis under cadmium-induced oxidative stress is regulated by autophagy, which is sensitized by tumor suppressor p53. Biochem Biophys Res Commun 2016; 479:80-5. [DOI: 10.1016/j.bbrc.2016.09.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 09/07/2016] [Indexed: 01/30/2023]
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47
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Surolia R, Karki S, Wang Z, Kulkarni T, Li FJ, Vohra S, Batra H, Nick JA, Duncan SR, Thannickal VJ, Steyn AJC, Agarwal A, Antony VB. Attenuated heme oxygenase-1 responses predispose the elderly to pulmonary nontuberculous mycobacterial infections. Am J Physiol Lung Cell Mol Physiol 2016; 311:L928-L940. [PMID: 27694475 DOI: 10.1152/ajplung.00397.2015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 09/22/2016] [Indexed: 12/22/2022] Open
Abstract
Pulmonary infections with nontuberculous mycobacteria (P-NTM), such as by Mycobacterium avium complex (M. avium), are increasingly found in the elderly, but the underlying mechanisms are unclear. Recent studies suggest that adaptive immunity is necessary, but not sufficient, for host defense against mycobacteria. Heme oxygenase-1 (HO-1) has been recognized as a critical modulator of granuloma formation and programmed cell death in mycobacterial infections. Old mice (18-21 mo) infected with M. avium had attenuated HO-1 response with diffuse inflammation, high burden of mycobacteria, poor granuloma formation, and decreased survival (45%), while young mice (4-6 mo) showed tight, well-defined granuloma, increased HO-1 expression, and increased survival (95%). To further test the role of HO-1 in increased susceptibility to P-NTM infections in the elderly, we used old and young HO-1+/+ and HO-1-/- mice. The transcriptional modulation of the JAK/STAT signaling pathway in HO-1-/- mice due to M. avium infection demonstrated similarities to infected wild-type old mice with upregulation of SOCS3 and inhibition of Bcl2. Higher expression of SOCS3 with downregulation of Bcl2 resulted in higher macrophage death via cellular necrosis. Finally, peripheral blood monocytes (PBMCs) from elderly patients with P-NTM also demonstrated attenuated HO-1 responses after M. avium stimulation and increased cell death due to cellular necrosis (9.69% ± 2.02) compared with apoptosis (4.75% ± 0.98). The augmented risk for P-NTM in the elderly is due, in part, to attenuated HO-1 responses, subsequent upregulation of SOCS3, and inhibition of Bcl2, leading to programmed cell death of macrophages, and sustained infection.
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Affiliation(s)
- Ranu Surolia
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care, University of Alabama at Birmingham, Birmingham, Alabama
| | - Suman Karki
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care, University of Alabama at Birmingham, Birmingham, Alabama
| | - Zheng Wang
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care, University of Alabama at Birmingham, Birmingham, Alabama
| | - Tejaswini Kulkarni
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care, University of Alabama at Birmingham, Birmingham, Alabama
| | - Fu Jun Li
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care, University of Alabama at Birmingham, Birmingham, Alabama
| | - Shikhar Vohra
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care, University of Alabama at Birmingham, Birmingham, Alabama
| | - Hitesh Batra
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care, University of Alabama at Birmingham, Birmingham, Alabama
| | - Jerry A Nick
- Department of Medicine, National Jewish Health, University of Colorado, Denver, Colorado
| | - Steven R Duncan
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care, University of Alabama at Birmingham, Birmingham, Alabama
| | - Victor J Thannickal
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care, University of Alabama at Birmingham, Birmingham, Alabama
| | - Adrie J C Steyn
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, Alabama.,KwaZulu-Natal Research Institute for TB and HIV, Durban, South Africa; and
| | - Anupam Agarwal
- Department of Medicine, Division of Nephrology, University of Alabama at Birmingham, Birmingham, Alabama.,Birmingham VA Medical Center, University of Alabama at Birmingham, Birmingham, Alabama
| | - Veena B Antony
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care, University of Alabama at Birmingham, Birmingham, Alabama;
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Zhao M, Zhu P, Fujino M, Nishio Y, Chen J, Ito H, Takahashi K, Nakajima M, Tanaka T, Zhao L, Zhuang J, Li XK. 5-Aminolevulinic acid with sodium ferrous citrate induces autophagy and protects cardiomyocytes from hypoxia-induced cellular injury through MAPK-Nrf-2-HO-1 signaling cascade. Biochem Biophys Res Commun 2016; 479:663-9. [PMID: 27693692 DOI: 10.1016/j.bbrc.2016.09.156] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Accepted: 09/28/2016] [Indexed: 12/25/2022]
Abstract
BACKGROUND Hypoxia causes cardiac disease via oxidative stress and mitochondrial dysfunction. 5-Aminolevulinic acid in combination with sodium ferrous citrate (ALA/SFC) has been shown to up-regulate heme oxygenase-1 (HO-1) and decrease macrophage infiltration and renal cell apoptosis in renal ischemia injury mice. However, its underlying mechanism remains largely unknown. The aim of this study was to investigate whether ALA/SFC could protect cardiomyocytes from hypoxia-induced apoptosis by autophagy via HO-1 signaling. MATERIALS & METHODS Murine atrial cardiomyocyte HL-1 cells were pretreated with ALA/SFC and then exposed to hypoxia. RESULTS ALA/SFC pretreatment significantly attenuated hypoxia-induced cardiomyocyte apoptosis, reactive oxygen species production, and mitochondrial injury, while it increased cell viability and autophagy levels. HO-1 expression by ALA/SFC was associated with up-regulation and nuclear translocation of Nrf-2, whereas Nrf-2 siRNA dramatically reduced HO-1 expression. ERK1/2, p38, and SAPK/JNK pathways were activated by ALA/SFC and their specific inhibitors significantly reduced ALA/SFC-mediated HO-1 upregulation. Silencing of either Nrf-2 or HO-1and LY294002, inhibitor of autophagy, abolished the protective ability of ALA/AFC against hypoxia-induced injury and reduced ALA/SFC-induced autophagy. CONCLUSION Taken together, our data suggest that ALA/SFC induces autophagy via activation of MAPK/Nrf-2/HO-1 signaling pathway to protect cardiomyocytes from hypoxia-induced apoptosis.
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49
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So KY, Oh SH. Cadmium-induced heme-oxygenase-1 expression plays dual roles in autophagy and apoptosis and is regulated by both PKC-δ and PKB/Akt activation in NRK52E kidney cells. Toxicology 2016; 370:49-59. [PMID: 27658547 DOI: 10.1016/j.tox.2016.09.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 09/19/2016] [Accepted: 09/19/2016] [Indexed: 01/25/2023]
Abstract
Heme oxygenase-1 (HO-1) protects cells against cadmium (Cd)-induced oxidative stress. However, the mechanism underlying this protection is not well understood. In this study, we elucidated the role of HO-1 in Cd-induced cytotoxicity. Exposure of NRK52E cells to Cd induced protein kinase B (PKB)/Akt, protein kinase C (PKC)-δ, and glycogen synthase kinase (GSK) 3αb phosphorylation, and eukaryotic initiation factor (eIF) 2α dephosphorylation. Pharmacological inhibition of Akt resulted in HO-1 suppression and eIF2α activation, which partially suppressed CHOP and PARP-1 cleavage, but promoted autophagy and decreased cell viability. Pharmacological inactivation of PKC-δ markedly suppressed Cd-induced phospho-serine (p-Ser) GSK3αβ, and HO-1, and partially inhibited PARP-1 cleavage, but massively induced autophagy and decreased cell viability. Pharmacological upregulation of p-Ser GSK3αβ enhanced Cd-induced HO-1, CHOP, and PARP-1 cleavage, but decreased autophagy. Genetic deficiency of GSK3β suppressed HO-1 and PARP-1 cleavage and increased autophagy. Genetic suppression of HO-1 reduced Cd-induced PARP-1 cleavage, but increased LC3-II. Cd exposure led to accumulation of p-PKC-δ, p-Ser GSK3αβ, and HO-1 in the nucleus and particulate fractions, suggesting that they have dual functions in response to Cd. N-acetylcysteine treatment suppressed Cd-induced activation of PKC-δ and Akt. These results indicate that HO-1 induced by Cd exposure is regulated by PKC-δ, p-Ser GSK3αβ, and PKB/Akt, which restrain autophagic cell death, but mildly induce apoptosis in NRK52E cells. Together, the results suggest that HO-1 expression in response to Cd maintains cellular homeostasis during oxidative stress.
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Affiliation(s)
- Keum-Young So
- Department of Anesthesiology and Pain Medicine, Chosun University, Gwangju 501-759, Republic of Korea
| | - Seon-Hee Oh
- Department of Premedics, School of Medicine, Chosun University, Gwangju 501-759, Republic of Korea.
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50
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Bodas M, Van Westphal C, Carpenter-Thompson R, K Mohanty D, Vij N. Nicotine exposure induces bronchial epithelial cell apoptosis and senescence via ROS mediated autophagy-impairment. Free Radic Biol Med 2016; 97:441-453. [PMID: 27394171 DOI: 10.1016/j.freeradbiomed.2016.06.017] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 05/30/2016] [Accepted: 06/17/2016] [Indexed: 12/15/2022]
Abstract
Waterpipe smoking and e-cigarette vaping, the non-combustible sources of inhaled nicotine exposure are increasingly becoming popular and marketed as safer alternative to cigarette smoking. Hence, this study was designed to investigate the impact of inhaled nicotine exposure on disease causing COPD-emphysema mechanisms. For in vitro studies, human bronchial epithelial cells (Beas2b) were treated with waterpipe smoke extract (WPSE, 5%), nicotine (5mM), and/or cysteamine (250μM, an autophagy inducer and anti-oxidant drug), for 6hrs. We observed significantly (p<0.05) increased ubiquitinated protein-accumulation in the insoluble protein fractions of Beas2b cells treated with WPSE or nicotine that could be rescued by cysteamine treatment, suggesting aggresome-formation and autophagy-impairment. Moreover, our data also demonstrate that both WPSE and nicotine exposure significantly (p<0.05) elevates Ub-LC3β co-localization to aggresome-bodies while inducing Ub-p62 co-expression/accumulation, verifying autophagy-impairment. We also found that WPSE and nicotine exposure impacts Beas2b cell viability by significantly (p<0.05) inducing cellular apoptosis/senescence via ROS-activation, as it could be controlled by cysteamine, which is known to have an anti-oxidant property. For murine studies, C57BL/6 mice were administered with inhaled nicotine (intranasal, 500μg/mouse/day for 5 days), as an experimental model of non-combustible nicotine exposure. The inhaled nicotine exposure mediated oxidative-stress induces autophagy-impairment in the murine lungs as seen by significant (p<0.05, n=4) increase in the expression levels of nitrotyrosine protein-adduct (oxidative-stress marker, soluble-fraction) and Ub/p62/VCP (impaired-autophagy marker, insoluble-fraction). Overall, our data shows that nicotine, a common component of WPS, e-cigarette vapor and cigarette smoke, induces bronchial epithelial cell apoptosis and senescence via ROS mediated autophagy-impairment as a potential mechanism for COPD-emphysema pathogenesis.
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Affiliation(s)
- Manish Bodas
- College of Medicine, Central Michigan University, Mt Pleasant, MI, United States
| | - Colin Van Westphal
- College of Medicine, Central Michigan University, Mt Pleasant, MI, United States
| | | | - Dillip K Mohanty
- Department of Chemistry and Biochemistry, Central Michigan University, Mt Pleasant, MI, United States
| | - Neeraj Vij
- College of Medicine, Central Michigan University, Mt Pleasant, MI, United States; Department of Pediatrics and Pulmonary Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, United States.
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