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Liang S, Gao H, He T, Li L, Zhang X, Zhao L, Chen J, Xie Y, Bao J, Gao Y, Dai E, Wang Y. Association between SUMF1 polymorphisms and COVID-19 severity. BMC Genom Data 2023; 24:34. [PMID: 37344788 DOI: 10.1186/s12863-023-01133-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 05/22/2023] [Indexed: 06/23/2023] Open
Abstract
BACKGROUND Evidence shows that genetic factors play important roles in the severity of coronavirus disease 2019 (COVID-19). Sulfatase modifying factor 1 (SUMF1) gene is involved in alveolar damage and systemic inflammatory response. Therefore, we speculate that it may play a key role in COVID-19. RESULTS We found that rs794185 was significantly associated with COVID-19 severity in Chinese population, under the additive model after adjusting for gender and age (for C allele = 0.62, 95% CI = 0.44-0.88, P = 0.0073, logistic regression). And this association was consistent with this in European population Genetics Of Mortality In Critical Care (GenOMICC: OR for C allele = 0.94, 95% CI = 0.90-0.98, P = 0.0037). Additionally, we also revealed a remarkable association between rs794185 and the prothrombin activity (PTA) in subjects (P = 0.015, Generalized Linear Model). CONCLUSIONS In conclusion, our study for the first time identified that rs794185 in SUMF1 gene was associated with the severity of COVID-19.
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Affiliation(s)
- Shaohui Liang
- Department of Respiratory, Hebei Chest Hospital, Shijiazhuang, 050000, Hebei, China
| | - Huixia Gao
- Department of Laboratory Medicine, The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, 050021, Hebei, China
| | - Tongxin He
- College of Plant Protection, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Li Li
- Intensive Care Unit, The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, 050021, Hebei, China
| | - Xin Zhang
- Department of Tuberculosis, The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, 050021, Hebei, China
| | - Lei Zhao
- The Second Internal Medicine, The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, 050021, Hebei, China
| | - Jie Chen
- Graduate School of Hebei Medical University, Shijiazhuang, 050017, Hebei, China
| | - Yanyan Xie
- Graduate School of Hebei Medical University, Shijiazhuang, 050017, Hebei, China
| | - Jie Bao
- Department of Respiratory, Hebei Chest Hospital, Shijiazhuang, 050000, Hebei, China
| | - Yong Gao
- Department of Respiratory, Hebei Chest Hospital, Shijiazhuang, 050000, Hebei, China
| | - Erhei Dai
- Department of Laboratory Medicine, The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, 050021, Hebei, China.
| | - Yuling Wang
- Department of Tuberculosis, The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, 050021, Hebei, China.
- Graduate School of Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
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Hecker J, Chun S, Samiei A, Liu C, Laurie C, Kachroo P, Lutz SM, Lee S, Smith AV, Lasky-Su J, Cho MH, Sharma S, Soto Quirós ME, Avila L, Celedón JC, Raby B, Zhou X, Silverman EK, DeMeo DL, Lange C, Weiss ST. FGF20 and PGM2 variants are associated with childhood asthma in family-based whole-genome sequencing studies. Hum Mol Genet 2023; 32:696-707. [PMID: 36255742 PMCID: PMC9896483 DOI: 10.1093/hmg/ddac258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 10/12/2022] [Accepted: 10/13/2022] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Asthma is a heterogeneous common respiratory disease that remains poorly understood. The established genetic associations fail to explain the high estimated heritability, and the prevalence of asthma differs between populations and geographic regions. Robust association analyses incorporating different genetic ancestries and whole-genome sequencing data may identify novel genetic associations. METHODS We performed family-based genome-wide association analyses of childhood-onset asthma based on whole-genome sequencing (WGS) data for the 'The Genetic Epidemiology of Asthma in Costa Rica' study (GACRS) and the Childhood Asthma Management Program (CAMP). Based on parent-child trios with children diagnosed with asthma, we performed a single variant analysis using an additive and a recessive genetic model and a region-based association analysis of low-frequency and rare variants. RESULTS Based on 1180 asthmatic trios (894 GACRS trios and 286 CAMP trios, a total of 3540 samples with WGS data), we identified three novel genetic loci associated with childhood-onset asthma: rs4832738 on 4p14 ($P=1.72\ast{10}^{-9}$, recessive model), rs1581479 on 8p22 ($P=1.47\ast{10}^{-8}$, additive model) and rs73367537 on 10q26 ($P=1.21\ast{10}^{-8}$, additive model in GACRS only). Integrative analyses suggested potential novel candidate genes underlying these associations: PGM2 on 4p14 and FGF20 on 8p22. CONCLUSION Our family-based whole-genome sequencing analysis identified three novel genetic loci for childhood-onset asthma. Gene expression data and integrative analyses point to PGM2 on 4p14 and FGF20 on 8p22 as linked genes. Furthermore, region-based analyses suggest independent potential low-frequency/rare variant associations on 8p22. Follow-up analyses are needed to understand the functional mechanisms and generalizability of these associations.
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Affiliation(s)
- Julian Hecker
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
| | - Sung Chun
- Division of Pulmonary Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Ahmad Samiei
- Division of Pulmonary Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Cuining Liu
- Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Cecelia Laurie
- Department of Biostatistics, University of Washington, Seattle, WA 98195, USA
| | - Priyadarshini Kachroo
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
| | - Sharon M Lutz
- Harvard Medical School, Boston, MA 02115, USA
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
- Department of Population Medicine, PRecisiOn Medicine Translational Research (PROMoTeR) Center, Harvard Pilgrim Health Care, Boston, MA 02215, USA
| | - Sanghun Lee
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
- Department of Medical Consilience, Division of Medicine, Graduate School, Dankook University, Yongin-si, 16890, South Korea
| | - Albert V Smith
- Department of Biostatistics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Jessica Lasky-Su
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
| | - Michael H Cho
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Sunita Sharma
- Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | | | - Lydiana Avila
- Department of Pediatrics, Hospital Nacional de Niños, 10101 San José, Costa Rica
| | - Juan C Celedón
- Division of Pediatric Pulmonary Medicine, UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA 15224, USA
| | - Benjamin Raby
- Harvard Medical School, Boston, MA 02115, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Xiaobo Zhou
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
| | - Edwin K Silverman
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Dawn L DeMeo
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
| | | | - Christoph Lange
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Scott T Weiss
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
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3
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Jarenbäck L, Frantz S, Weidner J, Ankerst J, Nihlén U, Bjermer L, Wollmer P, Tufvesson E. Single-nucleotide polymorphisms in the sulfatase-modifying factor 1 gene are associated with lung function and COPD. ERJ Open Res 2022; 8:00668-2021. [PMID: 35586453 PMCID: PMC9108960 DOI: 10.1183/23120541.00668-2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 02/17/2022] [Indexed: 11/05/2022] Open
Abstract
Single nucleotide polymorphisms (SNPs) in various genes have been shown to associate with COPD, suggesting a role in disease pathogenesis. Sulfatase modifying factor (SUMF1) is a key modifier in connective tissue remodelling, and we have shown previously that several SNPs in SUMF1 are associated with COPD. The aim of this study was to investigate the association between SUMF1 SNPs and advanced lung function characteristics. Never-, former and current smokers with (n=154) or without (n=405) COPD were genotyped for 21 SNPs in SUMF1 and underwent spirometry, body plethysmography, diffusing capacity of the lung for carbon monoxide (D LCO) measurement and impulse oscillometry. Four SNPs (rs793391, rs12634248, rs2819590 and rs304092) showed a significantly decreased odds ratio of having COPD when heterozygous for the variance allele, together with a lower forced expiratory volume in 1 s (FEV1) and FEV1/forced vital capacity (FVC) ratio and an impaired peripheral resistance and reactance. Moreover, individuals homozygous for the variance allele of rs3864051 exhibited a strong association to COPD, a lower FEV1/FVC, FEV1 and D LCO, and an impaired peripheral resistance and reactance. Other SNPs (rs4685744, rs2819562, rs2819561 and rs11915920) were instead associated with impaired lung volumes and exhibited a lower FVC, total lung capacity and alveolar volume, in individuals having the variance allele. Several SNPs in the SUMF1 gene are shown to be associated with COPD and impaired lung function. These genetic variants of SUMF1 may cause a deficient sulfation balance in the extracellular matrix of the lung tissue, thereby contributing to the development of COPD.
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Affiliation(s)
- Linnea Jarenbäck
- Dept of Clinical Sciences Lund, Respiratory Medicine and Allergology, Lund University, Lund, Sweden
| | - Sophia Frantz
- Dept of Translational Science, Clinical Physiology, Lund University, Skåne University Hospital, Malmö, Sweden
| | - Julie Weidner
- Dept of Clinical Sciences Lund, Respiratory Medicine and Allergology, Lund University, Lund, Sweden
| | - Jaro Ankerst
- Dept of Clinical Sciences Lund, Respiratory Medicine and Allergology, Lund University, Lund, Sweden
| | - Ulf Nihlén
- Dept of Clinical Sciences Lund, Respiratory Medicine and Allergology, Lund University, Lund, Sweden
| | - Leif Bjermer
- Dept of Clinical Sciences Lund, Respiratory Medicine and Allergology, Lund University, Lund, Sweden
| | - Per Wollmer
- Dept of Translational Science, Clinical Physiology, Lund University, Skåne University Hospital, Malmö, Sweden
| | - Ellen Tufvesson
- Dept of Clinical Sciences Lund, Respiratory Medicine and Allergology, Lund University, Lund, Sweden
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4
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Zeng X, Liu R, Li Y, Li J, Zhao Q, Li X, Bao J. Excessive ammonia inhalation causes liver damage and dysfunction by altering gene networks associated with oxidative stress and immune function. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 217:112203. [PMID: 33873080 DOI: 10.1016/j.ecoenv.2021.112203] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 03/25/2021] [Accepted: 03/29/2021] [Indexed: 06/12/2023]
Abstract
Ammonia (NH3) is a major gaseous pollutant in livestock production and has adverse effects on production, health and welfare of animals. The liver is one of the target organs of NH3, and excessive NH3 inhalation can induce liver damage. However, the toxicity assessment of NH3 on pig liver and its mechanism have not been reported yet. Recently, transcriptome analysis has become a major method to study the toxic mechanism of pollutants in environmental toxicology. Therefore, in the present study, we examined the effects of excessive NH3 inhalation on the liver of fattening pig through chemical analysis, ELISA, transcriptome analysis and real-time quantitative PCR (qRT-PCR). Our results showed that the transcriptome analysis database of fattening pig liver under excessive NH3 exposure, and 449 differentially expressed genes (DEGs) (including 181 up-regulated DEGs and 168 down-regulated DEGs) were found. Some genes associated with the 3 Gene Ontology (GO) terms (liver function, immune, antioxidant defense) were validated by quantitative real-time PCR. In addition, the activities of GPT and GOT in NH3 group were significantly increased by 63.5% and 37.4% (P < 0.05), respectively. Our results indicated that NH3 exposure could cause changes in transcriptional profiles and liver function, and induce liver damage in fattening pigs through oxidative stress and immune dysfunction. Our study results not only provide a new perspective for the toxicity assessment of NH3, but also enrich the toxicological mechanism of NH3.
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Affiliation(s)
- Xiangyin Zeng
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Runze Liu
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Yutao Li
- College of Life Science, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Jianhong Li
- College of Life Science, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Qian Zhao
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China; Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, Harbin, People's Republic of China
| | - Xiang Li
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China; Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, Harbin, People's Republic of China.
| | - Jun Bao
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China; Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, Harbin, People's Republic of China.
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5
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Kumari K, Kar A, Nayak AK, Mishra SK, Subudhi U. miRNA-mediated alteration of sulfatase modifying factor 1 expression using self-assembled branched DNA nanostructures. RSC Adv 2021; 11:10670-10680. [PMID: 35423539 PMCID: PMC8695627 DOI: 10.1039/d0ra10733f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 03/04/2021] [Indexed: 01/05/2023] Open
Abstract
Sulfatase enzymes catalyze sulfate ester hydrolysis, thus deficiencies of sulfatases lead to the accumulation of biomolecules resulting in several disorders. One of the important sulfatases is estrone sulfatase that converts inactive estrone sulfate to active estradiol. Posttranslational modification of highly conserved cysteine residue leads to unique formylglycine in the active site of sulfatases being critical for its catalytic activity. The essential factor responsible for this modification of sulfatase is Sulfatase-Modifying Factor 1 (SUMF1). The role of estrone sulfatase is well evident in breast cancer progression. However, the function and regulation of SUMF1 in cancer are not studied. In the present study, for the first time, we have assessed the expression of SUMF1 in breast cancer and report the oncogenic behavior upon overexpression of SUMF1. Although increased expression or activity of SUMF1 is anticipated based on its function, the expression of SUMF1 was found to be reduced in breast cancer cells at both mRNA and protein levels. An estrogen receptor (ER) dependent expression of SUMF1 was observed and higher SUMF1 expression is associated with improved breast cancer patient survival in ER-positive cases. However, high SUMF1 expression leads to reduced median survival in ER-negative breast cancer patients. Putative binding sites for miRNAs-106b-5p, 128-3p and 148b-3p were found at 3′-UTR of SUMF1. Since self-assembled branched DNA (bDNA) structures have emerged as a highly efficient strategy for targeting multiple miRNAs simultaneously, we studied the alteration in SUMF1 expression using bDNA nanostructures with a complementary sequence to miRNAs. The findings suggest the involvement of co-regulators and repressors in miRNA-mediated SUMF1 expression in breast cancer cells and reveal the therapeutic potential of SUMF1 in endocrine-related malignancies. Reduced expression of SUMF1 was evidenced in MCF-7 cells transfected with antimiR-bDNA. Expression of miRNA-106 and 148 have positive correlation with the expression of SUMF1. miRNA-106 and 148 blocks the repressor protein controls SUMF-1 expression.![]()
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Affiliation(s)
- Kanchan Kumari
- DNA Nanotechnology & Application Laboratory
- CSIR-Institute of Minerals & Materials Technology
- Bhubaneswar
- India
- Department of Molecular Biology
| | - Avishek Kar
- DNA Nanotechnology & Application Laboratory
- CSIR-Institute of Minerals & Materials Technology
- Bhubaneswar
- India
| | - Ashok K. Nayak
- DNA Nanotechnology & Application Laboratory
- CSIR-Institute of Minerals & Materials Technology
- Bhubaneswar
- India
| | - Sandip K. Mishra
- Cancer Biology Laboratory
- Institute of Life Sciences
- Bhubaneswar
- India
| | - Umakanta Subudhi
- DNA Nanotechnology & Application Laboratory
- CSIR-Institute of Minerals & Materials Technology
- Bhubaneswar
- India
- Academy of Scientific & Innovative Research (AcSIR)
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6
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Integration of SNP Disease Association, eQTL, and Enrichment Analyses to Identify Risk SNPs and Susceptibility Genes in Chronic Obstructive Pulmonary Disease. BIOMED RESEARCH INTERNATIONAL 2020; 2020:3854196. [PMID: 33457407 PMCID: PMC7785362 DOI: 10.1155/2020/3854196] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 12/09/2020] [Accepted: 12/15/2020] [Indexed: 12/14/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is a complex disease caused by the disturbance of genetic and environmental factors. Single-nucleotide polymorphisms (SNPs) play a vital role in the genetic dissection of complex diseases. In-depth analysis of SNP-related information could recognize disease-associated biomarkers and further uncover the genetic mechanism of complex diseases. Risk-related variants might act on the disease by affecting gene expression and gene function. Through integrating SNP disease association study and expression quantitative trait loci (eQTL) analysis, as well as functional enrichment of containing known causal genes, four risk SNPs and four corresponding susceptibility genes were identified utilizing next-generation sequencing (NGS) data of COPD. Of the four risk SNPs, one could be found in the SNPedia database that stored disease-related SNPs and has been linked to a disease in the literature. Four genes showed significant differences from the perspective of normal/disease or variant/nonvariant samples, as well as the high performance of sample classification. It is speculated that the four susceptibility genes could be used as biomarkers of COPD. Furthermore, three of our susceptibility genes have been confirmed in the literature to be associated with COPD. Among them, two genes had an impact on the significance of expression correlation of known causal genes they interact with, respectively. Overall, this research may present novel insights into the diagnosis and pathogenesis of COPD and susceptibility gene identification of other complex diseases.
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7
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Expression, activity and localization of lysosomal sulfatases in Chronic Obstructive Pulmonary Disease. Sci Rep 2019; 9:1991. [PMID: 30760748 PMCID: PMC6374378 DOI: 10.1038/s41598-018-37958-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 12/05/2018] [Indexed: 12/31/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a leading cause of death world-wide. Recently, we showed that COPD is associated with gene polymorphisms in SUMF1, a master regulator of sulfatases. Sulfatases are involved in extracellular matrix remodeling and activated by SUMF1, but their role in the lung is poorly described. We aimed to examine how sulfatases are affected in the airways of patients with COPD compared to ever smokers and never smokers. We observed that mRNA expression of the sulfatases GALNS, GNS and IDS was increased, while protein expression of many sulfatases was decreased in COPD fibroblasts. Several sulfatases, including GALNS, IDS, and SGSH, showed increased activity in COPD fibroblasts. Examination of different sulfatases by immunofluorescence showed that IDS, ARSB, GNS and SGSH in fibroblasts were localized to sites other than their reported destination. Using a master panel from different organs, RNA expression of all sulfatases could be observed in lung tissue. Additionally, immunohistochemistry on lung biopsies indicated differing expression of sulfatases in COPD patients. In conclusion, mRNA, protein expression, sulfatase activity levels, and localization of sulfatases are altered in lung fibroblasts and lung tissue from COPD patients and may be mechanistically important in COPD pathogenesis. This could contribute to the understanding of the disease mechanism in COPD and in the long run, to lead to more individualized therapies.
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8
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Weidner J, Jarenbäck L, Åberg I, Westergren‐Thorsson G, Ankerst J, Bjermer L, Tufvesson E. Endoplasmic reticulum, Golgi, and lysosomes are disorganized in lung fibroblasts from chronic obstructive pulmonary disease patients. Physiol Rep 2018; 6:e13584. [PMID: 29484832 PMCID: PMC5827558 DOI: 10.14814/phy2.13584] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 12/18/2017] [Accepted: 12/26/2017] [Indexed: 12/23/2022] Open
Abstract
Chronic Obstructive Pulmonary Disease (COPD) is often caused by smoking and other stressors. This causes oxidative stress, which induces numerous changes on both the transcriptome and proteome of the cell. We aimed to examine if the endomembrane pathway, including the endoplasmic reticulum (ER), Golgi, and lysosomes, was disrupted in fibroblasts from COPD patients as opposed to healthy ever-smokers or never-smokers, and if the response to stress differed. Different cellular compartments involved in the endomembrane pathway, as well as mRNA expression and apoptosis, were examined before and after the addition of stress in lung fibroblasts from never-smokers, ever-smokers, and patients with COPD. We found that the ER, Golgi, and lysosomes were disorganized in fibroblasts from COPD patients under baseline conditions. After a time course with ER stress inducing chemicals, changes to the phenotypes of cellular compartments in COPD patient fibroblasts were observed, and the expression of the ER stress-induced gene ERP72 was upregulated more in the COPD patient's cells compared to ever-smokers or never-smokers. Lastly, a tendency of increased active Caspase-3 was observed in COPD fibroblasts. Our results show that COPD patients have phenotypic changes in the lung fibroblasts endomembrane pathway, and respond differently to stress. Furthermore, these fibroblasts were cultured for several weeks outside the body, but they were not able to regain proper ER structure, indicating that the internal changes to the endomembrane system are permanent in smokers. This vulnerability to cellular stress might be a cause as to why some smokers develop COPD.
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Affiliation(s)
- Julie Weidner
- Department of Clinical Sciences Lund, Respiratory Medicine and AllergologyLund UniversityLundSweden
| | - Linnea Jarenbäck
- Department of Clinical Sciences Lund, Respiratory Medicine and AllergologyLund UniversityLundSweden
| | - Ida Åberg
- Department of Clinical Sciences Lund, Respiratory Medicine and AllergologyLund UniversityLundSweden
| | | | - Jaro Ankerst
- Department of Clinical Sciences Lund, Respiratory Medicine and AllergologyLund UniversityLundSweden
| | - Leif Bjermer
- Department of Clinical Sciences Lund, Respiratory Medicine and AllergologyLund UniversityLundSweden
| | - Ellen Tufvesson
- Department of Clinical Sciences Lund, Respiratory Medicine and AllergologyLund UniversityLundSweden
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