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Jiang M, Hu CJ, Rowe CL, Kang H, Gong X, Dagucon CP, Wang J, Lin Y, Sood A, Guo Y, Zhu Y, Alexis NE, Gilliland FD, Belinsky SA, Yu X, Leng S. Application of artificial intelligence in quantifying lung deposition dose of black carbon in people with exposure to ambient combustion particles. J Expo Sci Environ Epidemiol 2023:10.1038/s41370-023-00607-0. [PMID: 37848612 PMCID: PMC11021374 DOI: 10.1038/s41370-023-00607-0] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 09/19/2023] [Accepted: 10/04/2023] [Indexed: 10/19/2023]
Abstract
BACKGROUND Understanding lung deposition dose of black carbon is critical to fully reconcile epidemiological evidence of combustion particles induced health effects and inform the development of air quality metrics concerning black carbon. Macrophage carbon load (MaCL) is a novel cytology method that quantifies lung deposition dose of black carbon, however it has limited feasibility in large-scale epidemiological study due to the labor-intensive manual counting. OBJECTIVE To assess the association between MaCL and episodic elevation of combustion particles; to develop artificial intelligence based counting algorithm for MaCL assay. METHODS Sputum slides were collected during episodic elevation of ambient PM2.5 (n = 49, daily PM2.5 > 10 µg/m3 for over 2 weeks due to wildfire smoke intrusion in summer and local wood burning in winter) and low PM2.5 period (n = 39, 30-day average PM2.5 < 4 µg/m3) from the Lovelace Smokers cohort. RESULTS Over 98% individual carbon particles in macrophages had diameter <1 µm. MaCL levels scored manually were highly responsive to episodic elevation of ambient PM2.5 and also correlated with lung injury biomarker, plasma CC16. The association with CC16 became more robust when the assessment focused on macrophages with higher carbon load. A Machine-Learning algorithm for Engulfed cArbon Particles (MacLEAP) was developed based on the Mask Region-based Convolutional Neural Network. MacLEAP algorithm yielded excellent correlations with manual counting for number and area of the particles. The algorithm produced associations with ambient PM2.5 and plasma CC16 that were nearly identical in magnitude to those obtained through manual counting. IMPACT STATEMENT Understanding lung black carbon deposition is crucial for comprehending health effects of combustion particles. We developed "Machine-Learning algorithm for Engulfed cArbon Particles (MacLEAP)", the first artificial intelligence algorithm for quantifying airway macrophage black carbon. Our study bolstered the algorithm with more training images and its first use in air pollution epidemiology. We revealed macrophage carbon load as a sensitive biomarker for heightened ambient combustion particles due to wildfires and residential wood burning.
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Affiliation(s)
- Menghui Jiang
- School of Medicine, University of New Mexico, Albuquerque, NM, USA
| | - Chelin Jamie Hu
- College of Nursing, University of New Mexico College of Nursing, Albuquerque, NM, USA
| | - Cassie L Rowe
- School of Medicine, University of New Mexico, Albuquerque, NM, USA
| | - Huining Kang
- School of Medicine, University of New Mexico, Albuquerque, NM, USA
- University of New Mexico Comprehensive Cancer Center, Albuquerque, NM, USA
| | - Xi Gong
- Department of Geography & Environmental Studies, University of New Mexico, Albuquerque, NM, USA
| | | | - Jialiang Wang
- School of Medicine, University of New Mexico, Albuquerque, NM, USA
| | - Yan Lin
- Department of Geography & Environmental Studies, University of New Mexico, Albuquerque, NM, USA
| | - Akshay Sood
- School of Medicine, University of New Mexico, Albuquerque, NM, USA
- Miners Colfax Medical Center, Raton, NM, USA
| | - Yan Guo
- School of Medicine, University of New Mexico, Albuquerque, NM, USA
- University of New Mexico Comprehensive Cancer Center, Albuquerque, NM, USA
| | - Yiliang Zhu
- School of Medicine, University of New Mexico, Albuquerque, NM, USA
| | - Neil E Alexis
- Center for Environmental Medicine Asthma and Lung Biology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Frank D Gilliland
- Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Steven A Belinsky
- University of New Mexico Comprehensive Cancer Center, Albuquerque, NM, USA
- Lung Cancer Program, Lovelace Biomedical Research Institute, Albuquerque, NM, USA
| | - Xiaozhong Yu
- College of Nursing, University of New Mexico College of Nursing, Albuquerque, NM, USA.
| | - Shuguang Leng
- School of Medicine, University of New Mexico, Albuquerque, NM, USA.
- University of New Mexico Comprehensive Cancer Center, Albuquerque, NM, USA.
- Lung Cancer Program, Lovelace Biomedical Research Institute, Albuquerque, NM, USA.
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Tellez CS, Grimes MJ, Juri DE, Do K, Willink R, Dye WW, Wu G, Picchi MA, Belinsky SA. Flavored E-cigarette product aerosols induce transformation of human bronchial epithelial cells. Lung Cancer 2023; 179:107180. [PMID: 36989612 PMCID: PMC10159902 DOI: 10.1016/j.lungcan.2023.107180] [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: 01/06/2023] [Revised: 03/15/2023] [Accepted: 03/20/2023] [Indexed: 03/29/2023]
Abstract
OBJECTIVES E-cigarettes are the most commonly used nicotine containing products among youth. In vitro studies support the potential for e-cigarettes to cause cellular stress in vivo; however, there have been no studies to address whether exposure to e-liquid aerosols can induce cell transformation, a process strongly associated with pre-malignancy. We examined whether weekly exposure of human bronchial epithelial cell (HBEC) lines to e-cigarette aerosols would induce transformation and concomitant changes in gene expression and promoter hypermethylation. MATERIALS AND METHODS An aerosol delivery system exposed three HBEC lines to unflavored e-liquid with 1.2% nicotine, 3 flavored products with nicotine, or the Kentucky reference cigarette once a week for 12 weeks. Colony formation in soft agar, RNA-sequencing, and the EPIC Beadchip were used to evaluate transformation, genome-wide expression and methylation changes. RESULTS Jamestown e-liquid aerosol induced transformation of HBEC2 and HBEC26, while unflavored and Blue Pucker transformed HBEC26. Cigarette smoke aerosol transformed HBEC4 and HBEC26 at efficiencies up to 3-fold greater than e-liquids. Transformed clones exhibited extensive reprogramming of the transcriptome with common and distinct gene expression changes observed between the cigarette and e-liquids. Transformation by e-liquids induced alterations in canonical pathways implicated in lung cancer that included axonal guidance and NRF2. Gene methylation, while prominent in cigarette-induced transformed clones, also affected hundreds of genes in HBEC2 transformed by Jamestown. Many genes with altered expression or epigenetic-mediated silencing were also affected in lung tumors from smokers. CONCLUSIONS These studies show that exposure to e-liquid aerosols can induce a pre-malignant phenotype in lung epithelial cells. While the Food and Drug Administration banned the sale of flavored cartridge-based electric cigarettes, consumers switched to using flavored products through other devices. Our findings clearly support expanding studies to evaluate transformation potency for the major categories of e-liquid flavors to better inform risk from these complex mixtures.
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Affiliation(s)
- Carmen S. Tellez
- Lung Cancer Program Lovelace Biomedical Research Institute Albuquerque, NM
| | - Marcie J. Grimes
- Lung Cancer Program Lovelace Biomedical Research Institute Albuquerque, NM
| | - Daniel E. Juri
- Lung Cancer Program Lovelace Biomedical Research Institute Albuquerque, NM
| | - Kieu Do
- Lung Cancer Program Lovelace Biomedical Research Institute Albuquerque, NM
| | - Randy Willink
- Lung Cancer Program Lovelace Biomedical Research Institute Albuquerque, NM
| | - Wendy W. Dye
- Lung Cancer Program Lovelace Biomedical Research Institute Albuquerque, NM
| | - Guodong Wu
- Lung Cancer Program Lovelace Biomedical Research Institute Albuquerque, NM
| | - Maria A. Picchi
- Lung Cancer Program Lovelace Biomedical Research Institute Albuquerque, NM
| | - Steven A. Belinsky
- Lung Cancer Program Lovelace Biomedical Research Institute Albuquerque, NM
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Zhai T, Diergaarde B, Wilson DO, Kang H, Sood A, Bayliss SH, Yuan JM, Picchi MA, Lan Q, Belinsky SA, Siegfried JM, Cook LS, Leng S. Early natural menopause is associated with poor lung health and increased mortality among female smokers. Am J Obstet Gynecol 2022; 227:885.e1-885.e12. [PMID: 35934119 PMCID: PMC9729368 DOI: 10.1016/j.ajog.2022.07.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 03/09/2022] [Revised: 06/06/2022] [Accepted: 07/14/2022] [Indexed: 01/27/2023]
Abstract
BACKGROUND Early natural menopause has been regarded as a biomarker of reproductive and somatic aging. Cigarette smoking is the most harmful factor for lung health and also an established risk factor for early menopause. Understanding the effect of early menopause on health outcomes in middle-aged and older female smokers is important to develop preventive strategies. OBJECTIVE This study aimed to examine the associations of early menopause with multiple lung health and aging biomarkers, lung cancer risk, and all-cause and cause-specific mortality in postmenopausal women who were moderate or heavy smokers. STUDY DESIGN This study was conducted on postmenopausal women with natural (n=1038) or surgical (n=628) menopause from the Pittsburgh Lung Screening Study. The Pittsburgh Lung Screening Study is a community-based research cohort of current and former smokers, screened with low-dose computed tomography and followed up for lung cancer. Early menopause was defined as occurring before 45 years of age. The analyses were stratified by menopause types because of the different biological and medical causes of natural and surgical menopause. Statistical methods included linear model, generalized linear model, linear mixed-effects model, and time-to-event analysis. RESULTS The average age of the 1666 female smokers was 59.4±6.7 years, with 1519 (91.2%) of the population as non-Hispanic Whites and 1064 (63.9%) of the population as current smokers at baseline. Overall, 646 (39%) women reported early menopause, including 198 (19.1%) women with natural menopause and 448 (71.3%) women with surgical menopause (P<.001). Demographic variables did not differ between early and nonearly menopause groups, regardless of menopause type. Significant associations were identified between early natural menopause and higher risk of wheezing (odds ratio, 1.65; P<.01), chronic bronchitis (odds ratio, 1.73; P<.01), and radiographic emphysema (odds ratio, 1.70; P<.001) and lower baseline lung spirometry in an obstructive pattern (-104.8 mL/s for forced expiratory volume in the first second with P<.01, -78.6 mL for forced vital capacity with P=.04, and -2.1% for forced expiratory volume in the first second-to-forced vital capacity ratio with P=.01). In addition, early natural menopause was associated with a more rapid decline of forced expiratory volume in the first second-to-forced vital capacity ratio (-0.16% per year; P=.01) and incident airway obstruction (odds ratio, 2.02; P=.04). Furthermore, women early natural menopause had a 40% increased risk of death (P=.023), which was mainly driven by respiratory diseases (hazard ratio, 2.32; P<.001). Mediation analyses further identified that more than 33.3% of the magnitude of the associations between early natural menopause and all-cause and respiratory mortality were explained by baseline forced expiratory volume in the first second. Additional analyses in women with natural menopause identified that the associations between continuous smoking and subsequent lung cancer risk and cancer mortality were moderated by early menopause status, and females with early natural menopause who continued smoking had the worst outcomes (hazard ratio, >4.6; P<.001). This study did not find associations reported above in female smokers with surgical menopause. CONCLUSION Early natural menopause was found to be a risk factor for malignant and nonmalignant lung diseases and mortality in middle-aged and older female smokers. These findings have strong public health relevance as preventive strategies, including smoking cessation and chest computed tomography screening, should target this population (ie, female smokers with early natural menopause) to improve their postmenopausal health and well-being.
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Affiliation(s)
- Ting Zhai
- Department of Internal Medicine, School of Medicine, University of New Mexico, Albuquerque, NM; Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Brenda Diergaarde
- Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA; University of Pittsburgh Medical Center Hillman Cancer Center, Pittsburgh, PA
| | - David O Wilson
- University of Pittsburgh Medical Center Hillman Cancer Center, Pittsburgh, PA; Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Huining Kang
- Department of Internal Medicine, School of Medicine, University of New Mexico, Albuquerque, NM; Cancer Control and Population Sciences, University of New Mexico Comprehensive Cancer Center, Albuquerque, NM
| | - Akshay Sood
- Department of Internal Medicine, School of Medicine, University of New Mexico, Albuquerque, NM
| | - Samuel H Bayliss
- Department of Internal Medicine, School of Medicine, University of New Mexico, Albuquerque, NM
| | - Jian-Min Yuan
- University of Pittsburgh Medical Center Hillman Cancer Center, Pittsburgh, PA; Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA
| | - Maria A Picchi
- Lung Cancer Program, Lovelace Biomedical Research Institute, Albuquerque, NM
| | - Qing Lan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD
| | - Steven A Belinsky
- Cancer Control and Population Sciences, University of New Mexico Comprehensive Cancer Center, Albuquerque, NM; Lung Cancer Program, Lovelace Biomedical Research Institute, Albuquerque, NM
| | - Jill M Siegfried
- Department of Pharmacology, University of Minnesota, Minneapolis, MN; Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA
| | - Linda S Cook
- Department of Internal Medicine, School of Medicine, University of New Mexico, Albuquerque, NM; Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz, Arora, CO
| | - Shuguang Leng
- Department of Internal Medicine, School of Medicine, University of New Mexico, Albuquerque, NM; Cancer Control and Population Sciences, University of New Mexico Comprehensive Cancer Center, Albuquerque, NM; Lung Cancer Program, Lovelace Biomedical Research Institute, Albuquerque, NM.
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4
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Leng S, Picchi MA, Meek PM, Jiang M, Bayliss SH, Zhai T, Bayliyev RI, Tesfaigzi Y, Campen MJ, Kang H, Zhu Y, Lan Q, Sood A, Belinsky SA. Wood smoke exposure affects lung aging, quality of life, and all-cause mortality in New Mexican smokers. Respir Res 2022; 23:236. [PMID: 36076291 PMCID: PMC9454202 DOI: 10.1186/s12931-022-02162-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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 08/27/2022] [Indexed: 11/10/2022] Open
Abstract
Background The role of wood smoke (WS) exposure in the etiology of chronic obstructive pulmonary disease (COPD), lung cancer (LC), and mortality remains elusive in adults from countries with low ambient levels of combustion-emitted particulate matter. This study aims to delineate the impact of WS exposure on lung health and mortality in adults age 40 and older who ever smoked. Methods We assessed health impact of self-reported “ever WS exposure for over a year” in the Lovelace Smokers Cohort using both objective measures (i.e., lung function decline, LC incidence, and deaths) and two health related quality-of-life questionnaires (i.e., lung disease-specific St. George's Respiratory Questionnaire [SGRQ] and the generic 36-item short-form health survey). Results Compared to subjects without WS exposure, subjects with WS exposure had a more rapid decline of FEV1 (− 4.3 ml/s, P = 0.025) and FEV1/FVC ratio (− 0.093%, P = 0.015), but not of FVC (− 2.4 ml, P = 0.30). Age modified the impacts of WS exposure on lung function decline. WS exposure impaired all health domains with the increase in SGRQ scores exceeding the minimal clinically important difference. WS exposure increased hazard for incidence of LC and death of all-cause, cardiopulmonary diseases, and cancers by > 50% and shortened the lifespan by 3.5 year. We found no evidence for differential misclassification or confounding from socioeconomic status for the health effects of WS exposure. Conclusions We identified epidemiological evidence supporting WS exposure as an independent etiological factor for the development of COPD through accelerating lung function decline in an obstructive pattern. Time-to-event analyses of LC incidence and cancer-specific mortality provide human evidence supporting the carcinogenicity of WS exposure. Supplementary Information The online version contains supplementary material available at 10.1186/s12931-022-02162-y.
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Affiliation(s)
- Shuguang Leng
- Department of Internal Medicine, School of Medicine, University of New Mexico, Albuquerque, NM, 87131, USA. .,Cancer Control and Population Sciences, University of New Mexico Comprehensive Cancer Center, Albuquerque, NM, 87131, USA. .,Lung Cancer Program, Lovelace Biomedical Research Institute, Albuquerque, NM, 87108, USA.
| | - Maria A Picchi
- Lung Cancer Program, Lovelace Biomedical Research Institute, Albuquerque, NM, 87108, USA
| | - Paula M Meek
- College of Nursing, University of Utah, Salt Lake City, UT, 84112, USA
| | - Menghui Jiang
- Department of Internal Medicine, School of Medicine, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Samuel H Bayliss
- Department of Internal Medicine, School of Medicine, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Ting Zhai
- Department of Internal Medicine, School of Medicine, University of New Mexico, Albuquerque, NM, 87131, USA.,Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA
| | - Ruslan I Bayliyev
- Department of Internal Medicine, School of Medicine, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Yohannes Tesfaigzi
- Pulmonary and Critical Care Medicine Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 01255, USA
| | - Matthew J Campen
- Cancer Control and Population Sciences, University of New Mexico Comprehensive Cancer Center, Albuquerque, NM, 87131, USA.,College of Pharmacy, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Huining Kang
- Department of Internal Medicine, School of Medicine, University of New Mexico, Albuquerque, NM, 87131, USA.,Cancer Control and Population Sciences, University of New Mexico Comprehensive Cancer Center, Albuquerque, NM, 87131, USA
| | - Yiliang Zhu
- Department of Internal Medicine, School of Medicine, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Qing Lan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Akshay Sood
- Department of Internal Medicine, School of Medicine, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Steven A Belinsky
- Cancer Control and Population Sciences, University of New Mexico Comprehensive Cancer Center, Albuquerque, NM, 87131, USA.,Lung Cancer Program, Lovelace Biomedical Research Institute, Albuquerque, NM, 87108, USA
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John C, Guyatt AL, Shrine N, Packer R, Olafsdottir TA, Liu J, Hayden LP, Chu SH, Koskela JT, Luan J, Li X, Terzikhan N, Xu H, Bartz TM, Petersen H, Leng S, Belinsky SA, Cepelis A, Hernández Cordero AI, Obeidat M, Thorleifsson G, Meyers DA, Bleecker ER, Sakoda LC, Iribarren C, Tesfaigzi Y, Gharib SA, Dupuis J, Brusselle G, Lahousse L, Ortega VE, Jonsdottir I, Sin DD, Bossé Y, van den Berge M, Nickle D, Quint JK, Sayers I, Hall IP, Langenberg C, Ripatti S, Laitinen T, Wu AC, Lasky-Su J, Bakke P, Gulsvik A, Hersh CP, Hayward C, Langhammer A, Brumpton B, Stefansson K, Cho MH, Wain LV, Tobin MD. Genetic Associations and Architecture of Asthma-COPD Overlap. Chest 2022; 161:1155-1166. [PMID: 35104449 PMCID: PMC9131047 DOI: 10.1016/j.chest.2021.12.674] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [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: 06/02/2021] [Revised: 11/17/2021] [Accepted: 12/21/2021] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Some people have characteristics of both asthma and COPD (asthma-COPD overlap), and evidence suggests they experience worse outcomes than those with either condition alone. RESEARCH QUESTION What is the genetic architecture of asthma-COPD overlap, and do the determinants of risk for asthma-COPD overlap differ from those for COPD or asthma? STUDY DESIGN AND METHODS We conducted a genome-wide association study in 8,068 asthma-COPD overlap case subjects and 40,360 control subjects without asthma or COPD of European ancestry in UK Biobank (stage 1). We followed up promising signals (P < 5 × 10-6) that remained associated in analyses comparing (1) asthma-COPD overlap vs asthma-only control subjects, and (2) asthma-COPD overlap vs COPD-only control subjects. These variants were analyzed in 12 independent cohorts (stage 2). RESULTS We selected 31 independent variants for further investigation in stage 2, and discovered eight novel signals (P < 5 × 10-8) for asthma-COPD overlap (meta-analysis of stage 1 and 2 studies). These signals suggest a spectrum of shared genetic influences, some predominantly influencing asthma (FAM105A, GLB1, PHB, TSLP), others predominantly influencing fixed airflow obstruction (IL17RD, C5orf56, HLA-DQB1). One intergenic signal on chromosome 5 had not been previously associated with asthma, COPD, or lung function. Subgroup analyses suggested that associations at these eight signals were not driven by smoking or age at asthma diagnosis, and in phenome-wide scans, eosinophil counts, atopy, and asthma traits were prominent. INTERPRETATION We identified eight signals for asthma-COPD overlap, which may represent loci that predispose to type 2 inflammation, and serious long-term consequences of asthma.
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Affiliation(s)
- Catherine John
- Department of Health Sciences, University of Leicester, Leicester, England.
| | - Anna L Guyatt
- Department of Health Sciences, University of Leicester, Leicester, England
| | - Nick Shrine
- Department of Health Sciences, University of Leicester, Leicester, England
| | - Richard Packer
- Department of Health Sciences, University of Leicester, Leicester, England
| | | | - Jiangyuan Liu
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Lystra P Hayden
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Su H Chu
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Jukka T Koskela
- Institute for Molecular Medicine Finland, University of Helsinki, Helsinki, Finland
| | - Jian'an Luan
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge, England
| | - Xingnan Li
- Division of Genetics, Genomics and Precision Medicine, Department of Medicine, University of Arizona, Tucson, AZ
| | - Natalie Terzikhan
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Hanfei Xu
- Department of Biostatistics, Boston University School of Public Health, Boston, MA
| | - Traci M Bartz
- Cardiovascular Health Research Unit, Department of Medicine and Department of Biostatistics, University of Washington, Seattle, WA
| | - Hans Petersen
- Lovelace Respiratory Research Institute, Albuquerque, NM
| | - Shuguang Leng
- Division of Epidemiology, Biostatistics, and Preventive Medicine, Department of Internal Medicine, University of New Mexico, Albuquerque, NM
| | | | - Aivaras Cepelis
- Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Levanger, Norway
| | | | - Ma'en Obeidat
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, BC, Canada
| | - Gudmar Thorleifsson
- deCODE Genetics/Amgen, Reykjavik, Iceland; Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavik, Iceland
| | - Deborah A Meyers
- Division of Genetics, Genomics and Precision Medicine, Department of Medicine, University of Arizona, Tucson, AZ
| | - Eugene R Bleecker
- Division of Genetics, Genomics and Precision Medicine, Department of Medicine, University of Arizona, Tucson, AZ
| | - Lori C Sakoda
- Division of Research, Kaiser Permanente of Northern California, Oakland, CA
| | - Carlos Iribarren
- Division of Research, Kaiser Permanente of Northern California, Oakland, CA
| | | | - Sina A Gharib
- Computational Medicine Core, Center for Lung Biology and UW Medicine Sleep Center, Medicine, University of Washington, Seattle, WA
| | - Josée Dupuis
- Cardiovascular Health Research Unit, Department of Medicine and Department of Biostatistics, University of Washington, Seattle, WA
| | - Guy Brusselle
- Department of Biostatistics, Boston University School of Public Health, Boston, MA; Department of Respiratory Medicine, Ghent University Hospital, Ghent, Belgium
| | - Lies Lahousse
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands; Department of Bioanalysis, Ghent University, Ghent, Belgium
| | - Victor E Ortega
- Department of Medicine, Wake Forest School of Medicine, Winston-Salem, NC
| | - Ingileif Jonsdottir
- deCODE Genetics/Amgen, Reykjavik, Iceland; Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavik, Iceland
| | - Don D Sin
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, BC, Canada
| | - Yohan Bossé
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Laval University, Quebec, QC, Canada
| | - Maarten van den Berge
- Department of Pulmonology, University Medical Center Groningen, University of Groningen, and GRIAC Research Institute, Groningen, the Netherlands
| | - David Nickle
- Global Health, University of Washington, Seattle, WA; Gossamer Bio, San Diego, CA
| | - Jennifer K Quint
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Ian Sayers
- Division of Respiratory Medicine and NIHR Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, England; Biodiscovery Institute, University of Nottingham, Nottingham, England
| | - Ian P Hall
- Division of Respiratory Medicine and NIHR Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, England
| | - Claudia Langenberg
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge, England
| | - Samuli Ripatti
- Institute for Molecular Medicine Finland, University of Helsinki, Helsinki, Finland; Broad Institute of MIT and Harvard, Cambridge, MA
| | - Tarja Laitinen
- Division of Medicine, Department of Pulmonary Diseases, Turku University Hospital, Turku, Finland; Department of Pulmonary Diseases and Clinical Allergology, University of Turku, Turku, Finland
| | - Ann C Wu
- Center for Healthcare Research in Pediatrics (CHeRP) and PRecisiOn Medicine Translational Research (PROMoTeR) Center, Department of Population Medicine, Harvard Pilgrim Health Care Institute and Harvard Medical School, Boston, MA
| | - Jessica Lasky-Su
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Per Bakke
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Amund Gulsvik
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Craig P Hersh
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Caroline Hayward
- MRC Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, Scotland
| | - Arnulf Langhammer
- Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Levanger, Norway
| | - Ben Brumpton
- K. G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Norwegian University of Science and Technology (NTNU), Trondheim, Norway; Clinic of Thoracic and Occupational Medicine, St. Olav's Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Kari Stefansson
- deCODE Genetics/Amgen, Reykjavik, Iceland; Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavik, Iceland
| | - Michael H Cho
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Louise V Wain
- Department of Health Sciences, University of Leicester, Leicester, England; Leicester NIHR Biomedical Research Centre, Leicester, England
| | - Martin D Tobin
- Department of Health Sciences, University of Leicester, Leicester, England; Leicester NIHR Biomedical Research Centre, Leicester, England
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6
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Bruse S, Moreau M, Bromberg Y, Jang JH, Wang N, Ha H, Picchi M, Lin Y, Langley RJ, Qualls C, Klesney-Tait J, Zabner J, Leng S, Mao J, Belinsky SA, Xing J, Nyunoya T. Correction to: Whole exome sequencing identifies novel candidate genes that modify chronic obstructive pulmonary disease susceptibility. Hum Genomics 2021; 15:74. [PMID: 34965893 PMCID: PMC8717643 DOI: 10.1186/s40246-021-00373-w] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Shannon Bruse
- Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA
| | - Michael Moreau
- Department of Genetics, Rutgers, The State University of New Jersey, 145 Bevier Road, Piscataway, NJ, 08854, USA
| | - Yana Bromberg
- Department of Biochemistry and Microbiology, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Jun-Ho Jang
- Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA.,Department of Internal Medicine, University of New Mexico and New Mexico VA Health Care System, Albuquerque, NM, USA
| | - Nan Wang
- Department of Genetics, Rutgers, The State University of New Jersey, 145 Bevier Road, Piscataway, NJ, 08854, USA
| | - Hongseok Ha
- Department of Genetics, Rutgers, The State University of New Jersey, 145 Bevier Road, Piscataway, NJ, 08854, USA
| | - Maria Picchi
- Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA
| | - Yong Lin
- Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA
| | - Raymond J Langley
- Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA
| | - Clifford Qualls
- Biomedical Research Institute of New Mexico, Albuquerque, NM, USA
| | | | - Joseph Zabner
- Department of Medicine, University of Iowa, Iowa City, IA, USA
| | - Shuguang Leng
- Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA
| | - Jenny Mao
- Department of Internal Medicine, University of New Mexico and New Mexico VA Health Care System, Albuquerque, NM, USA
| | - Steven A Belinsky
- Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA
| | - Jinchuan Xing
- Department of Genetics, Rutgers, The State University of New Jersey, 145 Bevier Road, Piscataway, NJ, 08854, USA.
| | - Toru Nyunoya
- Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA. .,Department of Internal Medicine, University of New Mexico and New Mexico VA Health Care System, Albuquerque, NM, USA.
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7
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Tellez CS, Juri DE, Phillips LM, Do K, Thomas CL, Willink R, Dye WW, Wu G, Zhou Y, Irshad H, Kishida S, Kiyono T, Belinsky SA. Comparative Genotoxicity and Mutagenicity of Cigarette, Cigarillo, and Shisha Tobacco Products in Epithelial and Cardiac Cells. Toxicol Sci 2021; 184:67-82. [PMID: 34390580 PMCID: PMC8557423 DOI: 10.1093/toxsci/kfab101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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] [Indexed: 11/13/2022] Open
Abstract
Epidemiology studies link cigarillos and shisha tobacco (delivered through a hookah waterpipe) to increased risk for cardiopulmonary diseases. Here we performed a comparative chemical constituent analysis between 3 cigarettes, 3 cigarillos, and 8 shisha tobacco products. The potency for genotoxicity and oxidative stress of each product's generated total particulate matter (TPM) was also assessed using immortalized oral, lung, and cardiac cell lines to represent target tissues. Levels of the carcinogenic carbonyl formaldehyde were 32- to 95-fold greater, while acrolein was similar across the shisha aerosols generated by charcoal heating compared to cigarettes and cigarillos. Electric-mediated aerosol generation dramatically increased acrolein to levels exceeding those in cigarettes and cigarillos by up to 43-fold. Equivalent cytotoxic-mediated cell death and dose response for genotoxicity through induction of mutagenicity and DNA strand breaks was seen between cigarettes and cigarillos, while minimal to no effect was observed with shisha tobacco products. In contrast, increased potency of TPM from cigarillos compared to cigarettes for inducing oxidative stress via reactive oxygen radicals and lipid peroxidation across cell lines was evident, while positivity was seen for shisha tobacco products albeit at much lower levels. Together, these studies provide new insight into the potential harmful effects of cigarillos for causing tobacco-associated diseases. The high level of carbonyls in shisha products, that in turn is impacted by the heating mechanism, reside largely in the gas phase which will distribute throughout the respiratory tract and systemic circulation to likely increase genotoxic stress.
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Affiliation(s)
- Carmen S Tellez
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Daniel E Juri
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Loryn M Phillips
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Kieu Do
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Cindy L Thomas
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Randy Willink
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Wendy W Dye
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Guodong Wu
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Yue Zhou
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Hammad Irshad
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Shosei Kishida
- Departments of Biochemistry and Genetics, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Tohru Kiyono
- Exploratory Oncology Research & Clinical Trial Center, National Cancer Center, Chiba, Japan
| | - Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
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8
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Tellez CS, Juri DE, Phillips LM, Do K, Yingling CM, Thomas CL, Dye WW, Wu G, Kishida S, Kiyono T, Belinsky SA. Cytotoxicity and Genotoxicity of E-Cigarette Generated Aerosols Containing Diverse Flavoring Products and Nicotine in Oral Epithelial Cell Lines. Toxicol Sci 2021; 179:220-228. [PMID: 33226417 DOI: 10.1093/toxsci/kfaa174] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 12/14/2022] Open
Abstract
Electronic cigarettes are the most commonly used nicotine containing product among teenagers. The oral epithelium is the first site of exposure and our recent work revealed considerable diversity among e-liquids for composition and level of chemical constituents that impact nicotine deposition in a human oral-trachea cast and affect the formation of reactive carbonyls. Here, we evaluate the dose response for cytotoxicity and genotoxicity of e-cigarette-generated aerosols from 10 diverse flavored e-liquid products with and without nicotine compared with unflavored in 3 immortalized oral epithelial cell lines. Three e-liquids, Blue Pucker, Love Potion, and Jamestown caused ≥20% cell toxicity assessed by the neutral red uptake assay. Nine products induced significant levels of oxidative stress up to 2.4-fold quantified by the ROS-Glo assay in at least 1 cell line, with dose response seen for Love Potion with and without nicotine across all cell lines. Lipid peroxidation detected by the thiobarbituric acid reactive substances assay was less common among products; however, dose response increases up to 12-fold were seen for individual cell lines. Micronuclei formation indicative of genotoxicity was increased up to 5-fold for some products. Blue Pucker was the most genotoxic e-liquid, inducing micronuclei across all cell lines irrespective of nicotine status. A potency score derived from all assays identified Blue Pucker and Love Potion as the most hazardous e-liquids. These in vitro acute exposure studies provide new insight about the potential for some flavored vaping products to induce significant levels of oxidative stress and genotoxicity.
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Affiliation(s)
- Carmen S Tellez
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico 87108
| | - Daniel E Juri
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico 87108
| | - Loryn M Phillips
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico 87108
| | - Kieu Do
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico 87108
| | - Christin M Yingling
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico 87108
| | - Cindy L Thomas
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico 87108
| | - Wendy W Dye
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico 87108
| | - Guodong Wu
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico 87108
| | - Shosei Kishida
- Departments of Biochemistry and Genetics, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Tohru Kiyono
- Exploratory Oncology Research & Clinical Trial Center, National Cancer Center, Chiba, Japan
| | - Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico 87108
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9
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Chen W, Saxton B, Tessema M, Belinsky SA. Inhibition of GFAT1 in lung cancer cells destabilizes PD-L1 protein. Carcinogenesis 2021; 42:1171-1178. [PMID: 34270713 DOI: 10.1093/carcin/bgab063] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 11/17/2020] [Revised: 07/02/2021] [Accepted: 07/14/2021] [Indexed: 12/28/2022] Open
Abstract
Immunotherapy using checkpoint blockers (antibodies) has been a major advance in recent years in the management of various types of solid cancers including lung cancer. One target of checkpoint blockers is programmed death ligand 1 (PD-L1) expressed by cancer cells, which engages programmed death 1 (PD-1) on T cells and Natural Killer (NK) cells resulting in suppression of their activation and cancer-killing function, respectively. Apart from antibodies, other clinically relevant agents that can inhibit PD-L1 are limited. PD-L1 protein stability depends on its glycosylation. Here we show that L-glutamine:D-fructose amidotransferase 1 (GFAT1) a rate-limiting enzyme of the hexosamine biosynthesis pathway (HBP) which produces uridine diphosphate-N-acetyl-β-glucosamine (UDP-GlcNAc), a precursor for glycosylation, is required for the stability of PD-L1 protein. Inhibition of GFAT1 activity markedly reduced interferon γ (IFNγ)-induced PD-L1 levels in various lung cancer cell lines. GFAT1 inhibition suppressed glycosylation of PD-L1 and accelerated its proteasomal degradation. Importantly, inhibition of GFAT1 in IFNγ-treated cancer cells enhanced the activation of T cells and the cancer-killing activity of NK cells. These findings support using GFAT1 inhibitors to manipulate PD-L1 protein level that could augment the efficacy of immunotherapy for lung cancer.
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Affiliation(s)
- Wenshu Chen
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Bryanna Saxton
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Mathewos Tessema
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Steven A Belinsky
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
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10
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Phillips LM, Johnston CA, Belinsky SA, Tessema M. Abstract 2081: Transcriptional silencing of CDK18 in BRG1 mutant lung cancer. Cancer Res 2021. [DOI: 10.1158/1538-7445.am2021-2081] [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: 11/16/2022]
Abstract
Abstract
In ~10% of lung cancers, the BRG1 gene is mutated often causing a loss of function (LOF). BRG1 is a tumor suppressor that encodes a protein (SMARCA4), which is one of the mutually exclusive ATPase subunits of the Switch/Sucrose Non-fermentable (SWI/SNF) complex. The SWI/SNF complex functions to regulate transcription of many genes including tumor suppressor genes, through mediating chromatin remodeling and nucleosome repositioning by maintaining open chromatin and actively evicting polycomb repressive complexes (PRCs) from target genes and regions. Our previous research showed that BRG1 mutation occurs in approximately 9% of lung adenocarcinomas in smokers and 11% in smokers delineating BRG1 as a clinically relevant mutation. The goal of these studies is to elucidate the downstream effects of BRG1 LOF on gene expression. RNA sequencing of isogenic BRG1 wild type (WT) and knock out (KO) clones from malignant and transformed cell lines identified cell cycle control and chromosomal replication as the most significantly affected pathway. qRT-PCR was used to validate expression changes in 17 genes from this pathway in the WT and KO clones as well as wild type and mutant tumors lines. CDK18 was the most significantly affected target exhibiting a 78% reduction in expression (p<0.001) comparing wild type to mutant cell lines. Ongoing studies are investigating the epigenetic mechanisms leading to transcriptional repression of CDK18 that include cytosine DNA methylation and histone methylation of H3K27. In addition, functional assays (e.g., soft agar, cell migration) are evaluating the role of epigenetically repressed CDK18 in lung carcinogenesis and cell cycle control through siRNA knock down of CDK18 in wild type BRG1 cell lines and carcinogen transformed human bronchial epithelial cells. Together, these studies will provide new insight into the role of LOF of CDK18 in BRG1 mutant cancer. (Supported by P30 CA11800).
Citation Format: Loryn Michelle Phillips, Christopher A. Johnston, Steven A. Belinsky, Mathewos Tessema. Transcriptional silencing of CDK18 in BRG1 mutant lung cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2021; 2021 Apr 10-15 and May 17-21. Philadelphia (PA): AACR; Cancer Res 2021;81(13_Suppl):Abstract nr 2081.
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11
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Scott BR, Lin Y, Saxton B, Chen W, Potter CA, Belinsky SA. Modeling Cell Survival Fraction and Other Dose-Response Relationships for Immunodeficient C.B-17 SCID Mice Exposed to 320-kV X Rays. Dose Response 2021; 19:15593258211019887. [PMID: 34104124 PMCID: PMC8170291 DOI: 10.1177/15593258211019887] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 04/27/2021] [Accepted: 04/30/2021] [Indexed: 11/16/2022] Open
Abstract
US homeland security concerns related to potential misuse of γ-ray-emitting radiation sources employed in radiobiological research (eg, shielded cesium-137 irradiators) led to recommendations by the National Research Council to conduct studies into possibly replacing γ-ray irradiators used in research involving small rodent and other models with X-ray instruments. A limiting factor is suitability of the X-ray photon energy spectra. The objective of our research was to demonstrate the suitability of the radiation energy spectrum of 320-kV X rays after filtration (HVL = 4 mm Cu) for in-vivo cytotoxicity studies in immunodeficient C.B-17 SCID mice. By using a previously-published Hazard Function (HF) model to characterize dose-response relationships for in vivo bone marrow and spleen cell survival fractions and also to characterize the acute lethality risk (hematopoietic syndrome mode) we demonstrate that the filtered 320-kV X-ray beam appears suitable for such studies. A key finding for C.B-17 SCID mice when compared to results previously obtained for immunocompetent C.B-17 mice is that the immunodeficient mice appear to be more radioresistant, implicating a possible role of the immune system capacity in radiosensitivity of mammals.
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Affiliation(s)
- Bobby R Scott
- Lovelace Biomedical Research Institute, Albuquerque, NM, USA
| | - Yong Lin
- Lovelace Biomedical Research Institute, Albuquerque, NM, USA
| | - Bryanna Saxton
- Lovelace Biomedical Research Institute, Albuquerque, NM, USA
| | - Wenshu Chen
- Lovelace Biomedical Research Institute, Albuquerque, NM, USA
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12
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Kuehl PJ, Yingling CM, Dubose D, Burke M, Revelli DA, Chen W, Dye WW, Belinsky SA, Tessema M. Inhalation delivery dramatically improves the efficacy of topotecan for the treatment of local and distant lung cancer. Drug Deliv 2021; 28:767-775. [PMID: 33860729 PMCID: PMC8079036 DOI: 10.1080/10717544.2021.1912209] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 12/31/2022] Open
Abstract
Topotecan is potent anti-cancer drug approved for various malignancies but hematopoietic toxicities undermine its wider application and use of its most effective dose. This study aims to improve these limitations through inhalation-delivery. The pharmacokinetics, efficacy, and toxicity of 2–5 times lower inhalation doses of topotecan dry-powder were compared with the standard intravenous (IV) delivery once/twice-a-week. Human-derived EGFR-mutant (H1975), KRAS-mutant (A549), and EGFR/KRAS wild-type (H358) orthotopic and distant lung tumors were evaluated in murine models. Inhalation of 1 mg/kg topotecan significantly improved the half-life and drug exposure (area under the curve, AUC) compared to 5 mg/kg via IV-delivery. AUCs (h*ng/mL) for inhaled/IV topotecan in plasma, lung, liver, and brain were, 831/888, 60,000/1080, 8380/4000, and 297/15, respectively; while the half-life was also greatly increased in these tissues. The average lung tumor burden of H358-derived tumors was reduced from 15.0 g to 8.4 g (44%) in rats treated once-a-week with 2 mg/kg IV and 1.8 g (88%) with 1 mg/kg inhaled topotecan, corroborating previous findings using A549- and H1975-derived orthotopic lung tumors. Importantly, inhaled topotecan showed superior efficacy in suppressing lung tumors at distant sites. The growth of H1975- and H358-derived subcutaneous xenografts were completely arrested and A549-derived tumors were significantly reduced in mice treated twice-a-week with 1 mg/kg inhaled topotecan compared to a minor (H1975 and H358) or no reduction (A549) with twice-a-week 5 mg/kg IV topotecan.
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Affiliation(s)
- Philip J Kuehl
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Christin M Yingling
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | | | | | - David A Revelli
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Wenshu Chen
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Wendy W Dye
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Mathewos Tessema
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
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13
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Crosby L, Yucesoy B, Leggett C, Tu Z, Belinsky SA, McDonald J, Leng S, Wu G, Irshad H, Valerio LG, Rosenfeldt H. Smoke Chemistry, In Vitro Cytotoxicity, and Genotoxicity Demonstrates Enhanced Toxicity of Cigarillos Compared With Cigarettes. Toxicol Sci 2021; 180:122-135. [PMID: 33021639 DOI: 10.1093/toxsci/kfaa155] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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] [Indexed: 12/17/2023] Open
Abstract
There has been limited toxicity testing of cigarillos, including comparison to cigarettes. This study compared the smoke chemistry and the cytotoxic and genotoxic potential of 10 conventional cigarettes and 10 cigarillos based on the greatest market share. Whole smoke and total particulate matter (TPM) were generated using the Canadian Intense and International Organization for Standardization puffing protocols. Tobacco-specific nitrosamines, carbonyls, and polycyclic aromatic hydrocarbons were measured using gas chromatography-mass spectrometry. TPM smoke extracts were used for the in vitro assays. Cytotoxicity was assessed in human bronchial epithelial continuously cultured cell line cells using the neutral red uptake assay. Genotoxic potential was assessed using the micronucleus (human lung adenocarcinoma continuously cultured cell line cells), Ames, and thymidine kinase assays. TPM from all cigarillos tested was more cytotoxic than cigarettes. Micronucleus formation was significantly greater for cigarillos compared with cigarettes at the highest dose of TPM, with or without rat liver S9 fraction. In the Ames test +S9, both tobacco products exhibited significant dose-dependent increases in mutation frequency, indicating metabolic activation is required for genotoxicity. In the thymidine kinase assay +S9, cigarillos showed a significantly enhanced mutation frequency although both tobacco products were positive. The levels of all measured polycyclic aromatic hydrocarbons, tobacco-specific nitrosamines, and carbonyls (except acrolein) were significantly greater in cigarillos than cigarettes. The Canadian Intense puffing protocol demonstrated increased smoke constituent levels compared with International Organization for Standardization. Even though the gas vapor phase was not tested, the results of this study showed that under the tested conditions the investigated cigarillos showed greater toxicity than comparator cigarettes. This study found that there is significantly greater toxicity in the tested U.S. marketed cigarillos than cigarettes for tobacco constituent levels, cytotoxicity, and genotoxicity. These findings are important for understanding the human health toxicity from the use of cigarillos relative to cigarettes and for building upon knowledge regarding harm from cigarillos to inform risk mitigation strategies.
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Affiliation(s)
- Lynn Crosby
- Center for Tobacco Products, Office of Science, U.S. Food and Drug Administration, Silver Spring, Maryland 20993
| | - Berran Yucesoy
- Center for Tobacco Products, Office of Science, U.S. Food and Drug Administration, Silver Spring, Maryland 20993
| | - Carmine Leggett
- Center for Tobacco Products, Office of Science, U.S. Food and Drug Administration, Silver Spring, Maryland 20993
| | - Zheng Tu
- Center for Tobacco Products, Office of Science, U.S. Food and Drug Administration, Silver Spring, Maryland 20993
| | - Steven A Belinsky
- Lovelace Respiratory Research Institute, Albuquerque, New Mexico, 87108
| | - Jake McDonald
- Lovelace Respiratory Research Institute, Albuquerque, New Mexico, 87108
| | - Shuguang Leng
- Lovelace Respiratory Research Institute, Albuquerque, New Mexico, 87108
| | - Guodong Wu
- Lovelace Respiratory Research Institute, Albuquerque, New Mexico, 87108
| | - Hammad Irshad
- Lovelace Respiratory Research Institute, Albuquerque, New Mexico, 87108
| | - Luis G Valerio
- Center for Tobacco Products, Office of Science, U.S. Food and Drug Administration, Silver Spring, Maryland 20993
| | - Hans Rosenfeldt
- Center for Tobacco Products, Office of Science, U.S. Food and Drug Administration, Silver Spring, Maryland 20993
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14
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Tellez CS, Picchi MA, Juri D, Do K, Desai DH, Amin SG, Hutt JA, Filipczak PT, Belinsky SA. Chromatin remodeling by the histone methyltransferase EZH2 drives lung pre-malignancy and is a target for cancer prevention. Clin Epigenetics 2021; 13:44. [PMID: 33632299 PMCID: PMC7908796 DOI: 10.1186/s13148-021-01034-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 11/20/2020] [Accepted: 02/18/2021] [Indexed: 12/12/2022] Open
Abstract
Background Trimethylation of lysine 27 and dimethylation of lysine 9 of histone-H3 catalyzed by the histone methyltransferases EZH2 and G9a impede gene transcription in cancer. Our human bronchial epithelial (HBEC) pre-malignancy model studied the role of these histone modifications in transformation. Tobacco carcinogen transformed HBEC lines were characterized for cytosine DNA methylation, transcriptome reprogramming, and the effect of inhibiting EZH2 and G9a on the transformed phenotype. The effects of targeting EZH2 and G9a on lung cancer prevention was assessed in the A/J mouse lung tumor model. Results Carcinogen exposure induced transformation and DNA methylation of 12–96 genes in the four HBEC transformed (T) lines that was perpetuated in malignant tumors. In contrast, 506 unmethylated genes showed reduced expression in one or more HBECTs with many becoming methylated in tumors. ChIP-on-chip for HBEC2T identified 327 and 143 genes enriched for H3K27me3 and H3K9me2. Treatment of HBEC2T and HBEC13T with DZNep, a lysine methyltransferase inhibitor depleted EZH2, reversed transformation, and induced transcriptional reprogramming. The EZH2 small molecule inhibitor EPZ6438 also affected transformation and expression in HBEC2T, while a G9a inhibitor, UNC0642 was ineffective. Genetic knock down of EZH2 dramatically reduced carcinogen-induced transformation of HBEC2. Only DZNep treatment prevented progression of hyperplasia to adenomas in the NNK mouse lung tumor model through reducing EZH2 and affecting the expression of genes regulating cell growth and invasion. Conclusion These studies demonstrate a critical role for EZH2 catalyzed histone modifications for premalignancy and its potential as a target for chemoprevention of lung carcinogenesis.
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Affiliation(s)
- Carmen S Tellez
- Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA.
| | - Maria A Picchi
- Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA
| | - Daniel Juri
- Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA
| | - Kieu Do
- Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA
| | - Dhimant H Desai
- Department of Pharmacology, Penn State College of Medicine, Hershey, PA, USA
| | - Shantu G Amin
- Department of Pharmacology, Penn State College of Medicine, Hershey, PA, USA
| | - Julie A Hutt
- Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA
| | - Piotr T Filipczak
- Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA
| | - Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA.
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15
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Devadoss D, Singh SP, Acharya A, Do KC, Periyasamy P, Manevski M, Mishra N, Tellez CS, Ramakrishnan S, Belinsky SA, Byrareddy SN, Buch S, Chand HS, Sopori M. HIV-1 Productively Infects and Integrates in Bronchial Epithelial Cells. Front Cell Infect Microbiol 2021; 10:612360. [PMID: 33614527 PMCID: PMC7890076 DOI: 10.3389/fcimb.2020.612360] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 12/24/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND The role of lung epithelial cells in HIV-1-related lung comorbidities remains unclear, and the major hurdle in curing HIV is the persistence of latent HIV reservoirs in people living with HIV (PLWH). The advent of combined antiretroviral therapy has considerably increased the life span; however, the incidence of chronic lung diseases is significantly higher among PLWH. Lung epithelial cells orchestrate the respiratory immune responses and whether these cells are productively infected by HIV-1 is debatable. METHODS Normal human bronchial epithelial cells (NHBEs) grown on air-liquid interface were infected with X4-tropic HIV-1LAV and examined for latency using latency-reversing agents (LRAs). The role of CD4 and CXCR4 HIV coreceptors in NHBEs were tested, and DNA sequencing analysis was used to analyze the genomic integration of HIV proviral genes, Alu-HIVgag-pol, HIV-nef, and HIV-LTR. Lung epithelial sections from HIV-infected humans and SHIV-infected macaques were analyzed by FISH for HIV-gag-pol RNA and epithelial cell-specific immunostaining. RESULTS AND DISCUSSION NHBEs express CD4 and CXCR4 at higher levels than A549 cells. NHBEs are infected with HIV-1 basolaterally, but not apically, by X4-tropic HIV-1LAV in a CXCR4/CD4-dependent manner leading to HIV-p24 antigen production; however, NHBEs are induced to express CCR5 by IL-13 treatment. In the presence of cART, HIV-1 induces latency and integration of HIV provirus in the cellular DNA, which is rescued by the LRAs (endotoxin/vorinostat). Furthermore, lung epithelial cells from HIV-infected humans and SHIV-infected macaques contain HIV-specific RNA transcripts. Thus, lung epithelial cells are targeted by HIV-1 and could serve as potential HIV reservoirs that may contribute to the respiratory comorbidities in PLWH.
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Affiliation(s)
- Dinesh Devadoss
- Department of Immunology and Nano-Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States
| | - Shashi P. Singh
- Respiratory Immunology Division, Lovelace Respiratory Research Institute, Albuquerque, NM, United States
| | - Arpan Acharya
- Department of Pharmacology & Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, United States
| | - Kieu Chinh Do
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, United States
| | - Palsamy Periyasamy
- Department of Pharmacology & Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, United States
| | - Marko Manevski
- Department of Immunology and Nano-Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States
| | - Neerad Mishra
- Respiratory Immunology Division, Lovelace Respiratory Research Institute, Albuquerque, NM, United States
| | - Carmen S. Tellez
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, United States
| | - Sundaram Ramakrishnan
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Steven A. Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, United States
| | - Siddappa N. Byrareddy
- Department of Pharmacology & Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, United States
| | - Shilpa Buch
- Department of Pharmacology & Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, United States
| | - Hitendra S. Chand
- Department of Immunology and Nano-Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States
| | - Mohan Sopori
- Respiratory Immunology Division, Lovelace Respiratory Research Institute, Albuquerque, NM, United States
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16
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Zhou Y, Irshad H, Dye WW, Wu G, Tellez CS, Belinsky SA. Voltage and e-liquid composition affect nicotine deposition within the oral cavity and carbonyl formation. Tob Control 2020; 30:485-491. [PMID: 32587113 DOI: 10.1136/tobaccocontrol-2020-055619] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 01/09/2020] [Revised: 05/13/2020] [Accepted: 05/27/2020] [Indexed: 12/26/2022]
Abstract
INTRODUCTION The diversity of e-liquids along with higher powered e-cigarette nicotine delivery devices are increasing. This study evaluated the effect of voltage and e-liquid composition on particle size, nicotine deposition in a human oral-trachea cast model and generation of carbonyls. METHODS Nineteen e-liquids were evaluated for 30 common chemicals by gas chromatography-mass spectrometry (GC-MS). E-cigarette aerosols containing nicotine (1.2%) were generated at 4 and 5 volts for assessment of particle size distribution using Aerodynamic Particle Sizer (APS), Fast Mobility Particle Size (FMPS) and an In-Tox cascade impactor and nicotine deposition by GC-MS. Carbonyl formation in aerosols was assessed by liquid chromatography tandem triple-quad mass spectrometry. RESULTS Total chemical burden ranged from 0.35 to 14.6 mg/mL with ethyl maltol present in all e-liquids. Increasing voltage was associated with an increase in median size of aerosol particles and the deposition of nicotine in the oral cast. Two e-liquids caused a 2.5-fold to 5-fold increase in nicotine deposition independent of particle size and voltage. Increasing voltage caused an increase in formaldehyde, acetaldehyde and acrolein in the presence and absence of nicotine. Most striking, aerosols from several e-liquids significantly increased levels of acetaldehyde and acrolein compared with unflavoured. CONCLUSIONS Increasing voltage and composition of e-liquid can increase the exposure of the oral pharynx and bronchial airways to carbonyls that can react with DNA to generate adducts, induce oxidative stress, inflammation and cell death. The elevated nicotine and carbonyls readily enter the circulation where they can also cause cardiovascular stress. The growing popularity of higher voltage e-cigarette delivery devices will likely further elevate health risks from chronic exposure to these complex aerosols.
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Affiliation(s)
- Yue Zhou
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico, USA
| | - Hammad Irshad
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico, USA
| | - Wendy W Dye
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico, USA
| | - Guodong Wu
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico, USA
| | - Carmen S Tellez
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico, USA
| | - Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico, USA
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17
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Tessema M, Tassew DD, Yingling CM, Do K, Picchi MA, Wu G, Petersen H, Randell S, Lin Y, Belinsky SA, Tesfaigzi Y. Identification of novel epigenetic abnormalities as sputum biomarkers for lung cancer risk among smokers and COPD patients. Lung Cancer 2020; 146:189-196. [PMID: 32559455 DOI: 10.1016/j.lungcan.2020.05.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 03/31/2020] [Revised: 05/09/2020] [Accepted: 05/12/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVES Smoking is a common risk factor for chronic obstructive pulmonary disease (COPD) and lung cancer. Although COPD patients have higher risk of lung cancer compared to non-COPD smokers, the molecular links between these diseases are not well-defined. This study aims to identify genes that are downregulated by cigarette smoke and commonly repressed in COPD and lung cancer. MATERIALS AND METHODS Primary human airway epithelial cells (HAEC) were exposed to cigarette-smoke-extract (CSE) for 10-weeks and significantly suppressed genes were identified by transcriptome array. Epigenetic abnormalities of these genes in lung adenocarcinoma (LUAD) from patients with or without COPD were determined using genome-wide and gene-specific assays and by in vitro treatment of cell lines with trichostatin-A or 5-aza-2-deoxycytidine. RESULTS The ten most commonly downregulated genes following chronic CSE exposure of HAEC and show promoter hypermethylation in LUAD were selected. Among these, expression of CCNA1, SNCA, and ZNF549 was significantly reduced in lung tissues from COPD compared with non-COPD cases while expression of CCNA1 and SNCA was further downregulated in tumors with COPD. The promoter regions of all three genes were hypermethylated in LUAD but not normal or COPD lungs. The reduced expression and aberrant promoter hypermethylation of these genes in LUAD were independently validated using data from the Cancer Genome Atlas project. Importantly, SNCA and ZNF549 methylation detected in sputum DNA from LUAD (52% and 38%) cases were more prevalent compared to cancer-free smokers (26% and 15%), respectively (p < 0.02). CONCLUSIONS Our data show that suppression of CCNA1, SNCA, and ZNF549 in lung cancer and COPD occurs with or without promoter hypermethylation, respectively. Detecting methylation of these and previously identified genes in sputum of cancer-free smokers may serve as non-invasive biomarkers for early detection of lung cancer among high risk smokers including COPD patients.
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Affiliation(s)
- Mathewos Tessema
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, M, USA.
| | - Dereje D Tassew
- COPD Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA; Currently, Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Christin M Yingling
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, M, USA
| | - Kieu Do
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, M, USA
| | - Maria A Picchi
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, M, USA
| | - Guodong Wu
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, M, USA
| | - Hans Petersen
- COPD Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Scott Randell
- Department of Cell and Molecular Physiology, The University of North Carolina, Chapel Hill, NC, USA
| | - Yong Lin
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, M, USA
| | - Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, M, USA
| | - Yohannes Tesfaigzi
- COPD Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA; Currently, Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, MA, USA.
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18
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Kuehl PJ, Tellez CS, Grimes MJ, March TH, Tessema M, Revelli DA, Mallis LM, Dye WW, Sniegowski T, Badenoch A, Burke M, Dubose D, Vodak DT, Picchi MA, Belinsky SA. 5-Azacytidine inhaled dry powder formulation profoundly improves pharmacokinetics and efficacy for lung cancer therapy through genome reprogramming. Br J Cancer 2020; 122:1194-1204. [PMID: 32103148 PMCID: PMC7156464 DOI: 10.1038/s41416-020-0765-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 02/06/2020] [Indexed: 12/31/2022] Open
Abstract
Background Epigenetic therapy through demethylation of 5-methylcytosine has been largely ineffective in treating lung cancer, most likely due to poor tissue distribution with oral or subcutaneous delivery of drugs such as 5-azacytidine (5AZA). An inhalable, stable dry powder formulation of 5AZA was developed. Methods Pharmacokinetics of inhaled dry powder and aqueous formulations of 5AZA were compared to an injected formulation. Efficacy studies and effect of therapy on the epigenome were conducted in an orthotopic rat lung cancer model for inhaled formulations. Results Inhaled dry powder 5AZA showed superior pharmacokinetic properties in lung, liver, brain and blood compared to the injected formulation and for all tissues except lung compared to an inhaled aqueous formulation. Only dry powder 5AZA was detected in brain (~4-h half-life). Inhaled dry powder was superior to inhaled aqueous 5AZA in reducing tumour burden 70–95%. Superiority of inhaled 5AZA dry powder was linked to effectively reprogramming the cancer genome through demethylation and gene expression changes in cancer signalling and immune pathways. Conclusions These findings could lead to widespread use of this drug as the first inhaled dry powder therapeutic for treating local and metastatic lung cancer, for adjuvant therapy, and in combination with immunotherapy to improve patient survival.
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Affiliation(s)
- Philip J Kuehl
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Carmen S Tellez
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Marcie J Grimes
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Thomas H March
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Mathewos Tessema
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - David A Revelli
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Larry M Mallis
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Wendy W Dye
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Tyler Sniegowski
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | | | | | | | | | - Maria A Picchi
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA.
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19
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Cheng W, Liu Y, Tang J, Duan H, Wei X, Zhang X, Yu S, Campen MJ, Han W, Rothman N, Belinsky SA, Lan Q, Zheng Y, Leng S. Carbon content in airway macrophages and genomic instability in Chinese carbon black packers. Arch Toxicol 2020; 94:761-771. [PMID: 32076763 DOI: 10.1007/s00204-020-02678-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 12/18/2019] [Accepted: 02/11/2020] [Indexed: 01/15/2023]
Abstract
Carbon black (CB) particulates as virtually pure elemental carbon can deposit deep in the lungs of humans. International Agency for Research on Cancer classified CB as a Group 2B carcinogen due to inconclusive human evidence. A molecular epidemiological study was conducted in an established cohort of CB packers (CBP) to assess associations between CB exposure and genomic instability in peripheral lymphocytes using cytokinesis-block micronucleus assay (CBMN). Carbon content in airway macrophages (CCAM) was quantified as a bio-effective dosimeter for chronic CB exposure. Dose-response observed in CBPs was compared to that seen in workers exposed to diesel exhaust. The association between CB exposure status and CBMN endpoints was identified in 85 CBPs and 106 non-CBPs from a 2012 visit and replicated in 127 CBPs and 105 non-CBPs from a 2018 visit. The proportion of cytoplasm area occupied by carbon particles in airway macrophages was over fivefold higher in current CBPs compared to non-CBPs and was associated with CBMN endpoints in a dose-dependent manner. CB aerosol and diesel exhaust shared the same potency of inducing genomic instability in workers. Circulatory pro-inflammatory factors especially TNF-α was found to mediate associations between CB exposure and CBMN endpoints. In vitro functional validation supported the role of TNF-α in inducing genomic instability. An estimated range of lower limits of benchmark dose of 4.19-7.28% of CCAM was recommended for risk assessment. Chronic CB exposure increased genomic instability in human circulation and this provided novel evidence supporting its reclassification as a human carcinogen.
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Affiliation(s)
- Wenting Cheng
- School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Yuansheng Liu
- School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Jinglong Tang
- School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Huawei Duan
- National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Xiaoran Wei
- School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Xiao Zhang
- National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Shanfa Yu
- Henan Institute of Occupational Medicine, Zhengzhou, Henan, China.,Henan Medical College, Zhengzhou, Henan, China
| | - Matthew J Campen
- College of Pharmacy, University of New Mexico, Albuquerque, NM, USA
| | - Wei Han
- Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, China
| | - Nathaniel Rothman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Qing Lan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Yuxin Zheng
- School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Shuguang Leng
- School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China.
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20
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Tsoyi K, Osorio JC, Chu SG, Fernandez IE, De Frias SP, Sholl L, Cui Y, Tellez CS, Siegfried JM, Belinsky SA, Perrella MA, El-Chemaly S, Rosas IO. Lung Adenocarcinoma Syndecan-2 Potentiates Cell Invasiveness. Am J Respir Cell Mol Biol 2020; 60:659-666. [PMID: 30562054 DOI: 10.1165/rcmb.2018-0118oc] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 12/12/2022] Open
Abstract
Altered expression of syndecan-2 (SDC2), a heparan sulfate proteoglycan, has been associated with diverse types of human cancers. However, the mechanisms by which SDC2 may contribute to the pathobiology of lung adenocarcinoma have not been previously explored. SDC2 levels were measured in human lung adenocarcinoma samples and lung cancer tissue microarrays using immunohistochemistry and real-time PCR. To understand the role of SDC2 in vitro, SDC2 was silenced or overexpressed in A549 lung adenocarcinoma cells. The invasive capacity of cells was assessed using Matrigel invasion assays and measuring matrix metalloproteinase (MMP) 9 expression. Finally, we assessed tumor growth and metastasis of SDC2-deficient A549 cells in a xenograft tumor model. SDC2 expression was upregulated in malignant epithelial cells and macrophages obtained from human lung adenocarcinomas. Silencing of SDC2 decreased MMP9 expression and attenuated the invasive capacity of A549 lung adenocarcinoma cells. The inhibitory effect of SDC2 silencing on MMP9 expression and cell invasion was reversed by overexpression of MMP9 and syntenin-1. SDC2 silencing attenuated NF-κB p65 subunit nuclear translocation and its binding to the MMP9 promoter, which were restored by overexpression of syntenin-1. SDC2 silencing in vivo reduced tumor mass volume and metastasis. These findings suggest that SDC2 plays an important role in the invasive properties of lung adenocarcinoma cells and that its effects are mediated by syntenin-1. Thus, inhibiting SDC2 expression or activity could serve as a potential therapeutic target to treat lung adenocarcinoma.
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Affiliation(s)
| | - Juan C Osorio
- 1 Division of Pulmonary and Critical Care Medicine, and.,2 Department of Medicine, New York Presbyterian Hospital, Weill Cornell Medical College, New York, New York
| | - Sarah G Chu
- 1 Division of Pulmonary and Critical Care Medicine, and
| | - Isis E Fernandez
- 3 Comprehensive Pneumology Centre, Hospital of the Ludwig-Maximilians University of Munich, Munich, Germany
| | | | - Lynette Sholl
- 4 Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Ye Cui
- 1 Division of Pulmonary and Critical Care Medicine, and
| | | | - Jill M Siegfried
- 6 Department of Pharmacology, University of Minnesota, Minneapolis, Minnesota
| | | | | | | | - Ivan O Rosas
- 1 Division of Pulmonary and Critical Care Medicine, and.,7 Pulmonary Fibrosis Group, Lovelace Respiratory Research Institute, Albuquerque, New Mexico; and
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21
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Chen W, Wang Q, Xu X, Saxton B, Tessema M, Leng S, Choksi S, Belinsky SA, Liu ZG, Lin Y. Vasorin/ATIA Promotes Cigarette Smoke-Induced Transformation of Human Bronchial Epithelial Cells by Suppressing Autophagy-Mediated Apoptosis. Transl Oncol 2020; 13:32-41. [PMID: 31760267 PMCID: PMC6883318 DOI: 10.1016/j.tranon.2019.09.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/29/2019] [Accepted: 09/03/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Escaping cell death pathways is an important event during carcinogenesis. We previously identified anti-TNFα-induced apoptosis (ATIA, also known as vasorin) as an antiapoptotic factor that suppresses reactive oxygen species (ROS) production. However, the role of vasorin in lung carcinogenesis has not been investigated. METHODS Vasorin expression was examined in human lung cancer tissues with immunohistochemistry and database analysis. Genetic and pharmacological approaches were used to manipulate protein expression and autophagy activity in human bronchial epithelial cells (HBECs). ROS generation was measured with fluorescent indicator, apoptosis with release of lactate dehydrogenase, and cell transformation was assessed with colony formation in soft agar. RESULTS Vasorin expression was increased in human lung cancer tissues and cell lines, which was inversely associated with lung cancer patient survival. Cigarette smoke extract (CSE) and benzo[a]pyrene diol epoxide (BPDE)-induced vasorin expression in HBECs. Vasorin knockdown in HBECs significantly suppressed CSE-induced transformation in association with enhanced ROS accumulation and autophagy. Scavenging ROS attenuated autophagy and cytotoxicity in vasorin knockdown cells, suggesting that vasorin potentiates transformation by impeding ROS-mediated CSE cytotoxicity and improving survival of the premalignant cells. Suppression of autophagy effectively inhibited CSE-induced apoptosis, suggesting that autophagy was pro-apoptotic in CSE-treated cells. Importantly, blocking autophagy strongly potentiated CSE-induced transformation. CONCLUSION These results suggest that vasorin is a potential lung cancer-promoting factor that facilitates cigarette smoke-induced bronchial epithelial cell transformation by suppressing autophagy-mediated apoptosis, which could be exploited for lung cancer prevention.
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Affiliation(s)
- Wenshu Chen
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest DR. SE, Albuquerque, NM, 87108, USA
| | - Qiong Wang
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest DR. SE, Albuquerque, NM, 87108, USA
| | - Xiuling Xu
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest DR. SE, Albuquerque, NM, 87108, USA
| | - Bryanna Saxton
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest DR. SE, Albuquerque, NM, 87108, USA
| | - Mathewos Tessema
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest DR. SE, Albuquerque, NM, 87108, USA
| | - Shuguang Leng
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest DR. SE, Albuquerque, NM, 87108, USA
| | - Swati Choksi
- Laboratory of Immune Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 37 Convent Dr., Bethesda, MD, 20892, USA
| | - Steven A Belinsky
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest DR. SE, Albuquerque, NM, 87108, USA
| | - Zheng-Gang Liu
- Laboratory of Immune Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 37 Convent Dr., Bethesda, MD, 20892, USA
| | - Yong Lin
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest DR. SE, Albuquerque, NM, 87108, USA.
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22
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Gong Z, Wang J, Wang D, Buas MF, Ren X, Freudenheim JL, Belinsky SA, Liu S, Ambrosone CB, Higgins MJ. Differences in microRNA expression in breast cancer between women of African and European ancestry. Carcinogenesis 2019; 40:61-69. [PMID: 30321299 DOI: 10.1093/carcin/bgy134] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 09/21/2018] [Accepted: 10/09/2018] [Indexed: 12/12/2022] Open
Abstract
Breast cancer is a heterogeneous disease, characterized by molecularly and phenotypically distinct tumor subtypes, linked to disparate clinical outcomes. American women of African ancestry (AA) are more likely than those of European ancestry (EA) to be diagnosed with aggressive, estrogen receptor negative (ER-) or triple negative breast cancer, and to die of this disease. However, the underlying causes of AA predisposition to ER-/triple negative breast cancer are still largely unknown. In this study, we performed high-throughput whole-genome miRNA expression profiling in breast tissue samples from both AA and EA women. A number of differentially expressed miRNAs, i.e., DEmiRs defined as >2-fold change in expression and false discovery rate <0.05, were identified as up- or downregulated by tumor ER status or by ancestry. We found that among 102 ER-subtype-related DEmiRs identified in breast tumors, the majority of these DEmiRs were race specific, with only 23 DEmiRs shared in tumors from both AAs and EAs; this finding indicates that there are unique subsets of miRNAs differentially expressed between ER- and ER positive tumors within AAs versus EAs. Our overall results support the notion that miRNA expression patterns may differ not only by tumor subtype but by ancestry, indicating differences in tumor biology and heterogeneity of breast cancer between AAs and EAs. These results will provide the basis for further functional analysis to elucidate biological differences between AAs and EAs and to help develop targeted treatment strategies to reduce disparities in breast cancer.
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Affiliation(s)
- Zhihong Gong
- Department of Cancer Prevention and Control, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Jie Wang
- Department of Biochemistry, University at Buffalo, Buffalo, NY, USA.,Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Dan Wang
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Matthew F Buas
- Department of Cancer Prevention and Control, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Xuefeng Ren
- Department of Epidemiology and Environmental Health, University at Buffalo, Buffalo, NY, USA
| | - Jo L Freudenheim
- Department of Epidemiology and Environmental Health, University at Buffalo, Buffalo, NY, USA
| | - Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Song Liu
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Christine B Ambrosone
- Department of Cancer Prevention and Control, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Michael J Higgins
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
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23
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Verco J, Johnston W, Frost M, Baltezor M, Kuehl PJ, Lopez A, Gigliotti A, Belinsky SA, Wolff R, diZerega G. Inhaled Submicron Particle Paclitaxel (NanoPac) Induces Tumor Regression and Immune Cell Infiltration in an Orthotopic Athymic Nude Rat Model of Non-Small Cell Lung Cancer. J Aerosol Med Pulm Drug Deliv 2019; 32:266-277. [PMID: 31347939 PMCID: PMC6781259 DOI: 10.1089/jamp.2018.1517] [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] [Indexed: 12/24/2022] Open
Abstract
Background: This study evaluated the antineoplastic and immunostimulatory effects of inhaled (IH) submicron particle paclitaxel (NanoPac®) in an orthotopic non-small cell lung cancer rodent model. Methods: Male nude rats were whole body irradiated, intratracheally instilled with Calu-3 cancer cells and divided into six treatment arms (n = 20 each): no treatment (Group 1); intravenous nab-paclitaxel at 5.0 mg/kg once weekly for 3 weeks (Group 2); IH NanoPac at 0.5 or 1.0 mg/kg, once weekly for 4 weeks (Groups 3 and 4), or twice weekly for 4 weeks (Groups 5 and 6). Upon necropsy, left lungs were paraffin embedded, serially sectioned, and stained for histopathological examination. A subset was evaluated by immunohistochemistry (IHC), anti-pan cytokeratin staining AE1/AE3+ tumor cells and CD11b+ staining dendritic cells, natural killer lymphocytes, and macrophage immune cells (n = 2, Group 1; n = 3 each for Groups 2–6). BCL-6 staining identified B lymphocytes (n = 1 in Groups 1, 2, and 6). Results: All animals survived to scheduled necropsy, exhibited no adverse clinical observations due to treatment, and gained weight at the same rate throughout the study. Histopathological evaluation of Group 1 lung samples was consistent with unabated tumor growth. Group 2 exhibited regression in 10% of animals (n = 2/20). IH NanoPac-treated groups exhibited significantly higher tumor regression incidence per group (n = 11–13/20; p < 0.05, χ2). IHC subset analysis revealed tumor-nodule cluster separation, irregular borders between tumor and non-neoplastic tissue, and an increased density of infiltrating CD11b+ cells in Group 2 animals (n = 2/3) and in all IH NanoPac-treated animals reviewed (n = 3/3 per group). A single animal in Group 4 and Group 6 exhibited signs of pathological complete response at necropsy with organizing stroma and immune cells replacing areas presumed to have previously contained adenocarcinoma nodules. Conclusion: Tumor regression and immune cell infiltration were observed in all treatment groups, with an increased incidence noted in animals receiving IH submicron particle paclitaxel treatment.
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Affiliation(s)
- James Verco
- US Biotest, Inc., San Luis Obispo, California
| | | | - Michael Frost
- Western Diagnostic Services Laboratory, Santa Maria, California
| | | | | | - Anita Lopez
- Lovelace Biomedical, Albuquerque, New Mexico
| | | | | | | | - Gere diZerega
- US Biotest, Inc., San Luis Obispo, California.,NanOlogy, LLC, Fort Worth, Texas
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24
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Teneng I, Picchi MA, Leng S, Dagucon CP, Ramalingam S, Tellez CS, Belinsky SA. DNA-PKc deficiency drives pre-malignant transformation by reducing DNA repair capacity in concert with reprogramming the epigenome in human bronchial epithelial cells. DNA Repair (Amst) 2019; 79:1-9. [PMID: 31055244 PMCID: PMC6551272 DOI: 10.1016/j.dnarep.2019.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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: 02/25/2019] [Revised: 04/11/2019] [Accepted: 04/13/2019] [Indexed: 12/14/2022]
Abstract
The expression of DNA-dependent protein kinase catalytic subunit (DNA-PKc) is highly variable in smokers and reduced enzyme activity has been associated with risk for lung cancer. An in vitro model of lung pre-malignancy was used to evaluate the role of double-strand break DNA repair capacity in transformation of hTERT/CDK4 immortalized human bronchial epithelial cells (HBECs) and reprograming of the epigenome. Here we show that knockdown of DNA-PKc to levels simulating haploinsufficiency dramatically reduced DNA repair capacity following challenge with bleomycin and significantly increased transformation efficiency of HBEC lines exposed weekly for 12 weeks to this radiomimetic. Transformed HBEC lines with wild type or knockdown of DNA-PKc showed altered expression of more than 1,000 genes linked to major cell regulatory pathways involved in lung cancer. While lung cancer driver mutations were not detected in transformed clones, more than 300 genes that showed reduced expression associated with promoter methylation in transformed clones or predictive for methylation in malignant tumors were identified. These studies support reduced DNA repair capacity as a key factor in the initiation and clonal expansion of pre-neoplastic cells and double-strand break DNA damage as causal for epigenetic mediated silencing of many lung cancer-associated genes. The fact that DNA damage, repair, and epigenetic silencing of genes are causal for many other cancers that include colon and prostate extends the generalizability and impact of these findings.
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Affiliation(s)
- Ivo Teneng
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Maria A Picchi
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Shuguang Leng
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | | | - Suresh Ramalingam
- Department of Hematology and Oncology, Emory University School of Medicine, Winship Cancer Institute, Atlanta, GA, USA
| | - Carmen S Tellez
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA.
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25
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Chen W, Do KC, Saxton B, Leng S, Filipczak P, Tessema M, Belinsky SA, Lin Y. Inhibition of the hexosamine biosynthesis pathway potentiates cisplatin cytotoxicity by decreasing BiP expression in non-small-cell lung cancer cells. Mol Carcinog 2019; 58:1046-1055. [PMID: 30790354 DOI: 10.1002/mc.22992] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [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: 11/30/2018] [Revised: 02/08/2019] [Accepted: 02/09/2019] [Indexed: 12/28/2022]
Abstract
Platinum anticancer agents are essential components in chemotherapeutic regimens for non-small-cell lung cancer (NSCLC) patients ineligible for targeted therapy. However, platinum-based regimens have reached a plateau of therapeutic efficacy; therefore, it is critical to implement novel approaches for improvement. The hexosamine biosynthesis pathway (HBP), which produces amino-sugar N-acetyl-glucosamine for protein glycosylation, is important for protein function and cell survival. Here we show a beneficial effect by the combination of cisplatin with HBP inhibition. Expression of glutamine:fructose-6-phosphate amidotransferase (GFAT), the rate-limiting enzyme of HBP, was increased in NSCLC cell lines and tissues. Pharmacological inhibition of GFAT activity or knockdown of GFATimpaired cell proliferation and exerted synergistic or additive cytotoxicity to the cells treated with cisplatin. Mechanistically, GFAT positively regulated the expression of binding immunoglobulin protein (BiP; also known as glucose-regulated protein 78, GRP78), an endoplasmic reticulum chaperone involved in unfolded protein response (UPR). Suppressing GFAT activity resulted in downregulation of BiP that activated inositol-requiring enzyme 1α, a sensor protein of UPR, and exacerbated cisplatin-induced cell apoptosis. These data identify GFAT-mediated HBP as a target for improving platinum-based chemotherapy for NSCLC.
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Affiliation(s)
- Wenshu Chen
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Kieu C Do
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Bryanna Saxton
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Shuguang Leng
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Piotr Filipczak
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Mathewos Tessema
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Steven A Belinsky
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Yong Lin
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
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Sakornsakolpat P, Prokopenko D, Lamontagne M, Reeve NF, Guyatt AL, Jackson VE, Shrine N, Qiao D, Bartz TM, Kim DK, Lee MK, Latourelle JC, Li X, Morrow JD, Obeidat M, Wyss AB, Bakke P, Barr RG, Beaty TH, Belinsky SA, Brusselle GG, Crapo JD, de Jong K, DeMeo DL, Fingerlin TE, Gharib SA, Gulsvik A, Hall IP, Hokanson JE, Kim WJ, Lomas DA, London SJ, Meyers DA, O'Connor GT, Rennard SI, Schwartz DA, Sliwinski P, Sparrow D, Strachan DP, Tal-Singer R, Tesfaigzi Y, Vestbo J, Vonk JM, Yim JJ, Zhou X, Bossé Y, Manichaikul A, Lahousse L, Silverman EK, Boezen HM, Wain LV, Tobin MD, Hobbs BD, Cho MH. Genetic landscape of chronic obstructive pulmonary disease identifies heterogeneous cell-type and phenotype associations. Nat Genet 2019; 51:494-505. [PMID: 30804561 PMCID: PMC6546635 DOI: 10.1038/s41588-018-0342-2] [Citation(s) in RCA: 194] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 12/20/2018] [Indexed: 11/09/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is the leading cause of respiratory mortality worldwide. Genetic risk loci provide new insights into disease pathogenesis. We performed a genome-wide association study in 35,735 cases and 222,076 controls from the UK Biobank and additional studies from the International COPD Genetics Consortium. We identified 82 loci associated with P < 5 × 10-8; 47 of these were previously described in association with either COPD or population-based measures of lung function. Of the remaining 35 new loci, 13 were associated with lung function in 79,055 individuals from the SpiroMeta consortium. Using gene expression and regulation data, we identified functional enrichment of COPD risk loci in lung tissue, smooth muscle, and several lung cell types. We found 14 COPD loci shared with either asthma or pulmonary fibrosis. COPD genetic risk loci clustered into groups based on associations with quantitative imaging features and comorbidities. Our analyses provide further support for the genetic susceptibility and heterogeneity of COPD.
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Affiliation(s)
- Phuwanat Sakornsakolpat
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Dmitry Prokopenko
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Genetics and Aging Research Unit, Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
| | - Maxime Lamontagne
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, Quebec, Canada
| | - Nicola F Reeve
- Genetic Epidemiology Group, Department of Health Sciences, University of Leicester, Leicester, UK
| | - Anna L Guyatt
- Genetic Epidemiology Group, Department of Health Sciences, University of Leicester, Leicester, UK
| | - Victoria E Jackson
- Genetic Epidemiology Group, Department of Health Sciences, University of Leicester, Leicester, UK
| | - Nick Shrine
- Genetic Epidemiology Group, Department of Health Sciences, University of Leicester, Leicester, UK
| | - Dandi Qiao
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Traci M Bartz
- Cardiovascular Health Research Unit, University of Washington, Seattle, WA, USA
- Department of Medicine, University of Washington, Seattle, WA, USA
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Deog Kyeom Kim
- Seoul National University College of Medicine, SMG-SNU Boramae Medical Center, Seoul, South Korea
| | - Mi Kyeong Lee
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Raleigh, NC, USA
| | - Jeanne C Latourelle
- Department of Neurology, Boston University School of Medicine, Boston, MA, USA
| | - Xingnan Li
- Department of Medicine, University of Arizona, Tucson, AZ, USA
| | - Jarrett D Morrow
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Ma'en Obeidat
- University of British Columbia Center for Heart Lung Innovation, St. Paul's Hospital, Vancouver, British Columbia, Canada
| | - Annah B Wyss
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Raleigh, NC, USA
| | - Per Bakke
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - R Graham Barr
- Department of Medicine, College of Physicians and Surgeons and Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Terri H Beaty
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | | | - Guy G Brusselle
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands
- Department of Respiratory Medicine, Ghent University Hospital, Ghent, Belgium
- Department of Respiratory Medicine, Erasmus Medical Center, Rotterdam, the Netherlands
| | - James D Crapo
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, National Jewish Health, Denver, CO, USA
| | - Kim de Jong
- University of Groningen, University Medical Center Groningen, Department of Epidemiology, Groningen, the Netherlands
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, the Netherlands
| | - Dawn L DeMeo
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Tasha E Fingerlin
- Center for Genes, Environment and Health, National Jewish Health, Denver, CO, USA
- Department of Biostatistics and Informatics, University of Colorado Denver, Aurora, CO, USA
| | - Sina A Gharib
- Computational Medicine Core, Center for Lung Biology, UW Medicine Sleep Center, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Amund Gulsvik
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Ian P Hall
- Division of Respiratory Medicine, Queen's Medical Centre, University of Nottingham, Nottingham, UK
- National Institute for Health Research Nottingham Biomedical Research Centre, Nottingham, UK
| | - John E Hokanson
- Department of Epidemiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Woo Jin Kim
- Department of Internal Medicine and Environmental Health Center, School of Medicine, Kangwon National University, Chuncheon, South Korea
| | - David A Lomas
- UCL Respiratory, University College London, London, UK
| | - Stephanie J London
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Raleigh, NC, USA
| | | | - George T O'Connor
- National Heart, Lung, and Blood Institute's Framingham Heart Study, Framingham, MA, USA
- Pulmonary Center, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Stephen I Rennard
- Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
- Clinical Discovery Unit, AstraZeneca, Cambridge, UK
| | - David A Schwartz
- Department of Medicine, School of Medicine, University of Colorado Denver, Aurora, CO, USA
- Department of Immunology, School of Medicine, University of Colorado Denver, Aurora, CO, USA
| | - Pawel Sliwinski
- 2nd Department of Respiratory Medicine, Institute of Tuberculosis and Lung Diseases, Warsaw, Poland
| | - David Sparrow
- VA Boston Healthcare System and Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - David P Strachan
- Population Health Research Institute, St. George's University of London, London, UK
| | | | | | - Jørgen Vestbo
- School of Biological Sciences, University of Manchester, Manchester, UK
| | - Judith M Vonk
- University of Groningen, University Medical Center Groningen, Department of Epidemiology, Groningen, the Netherlands
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, the Netherlands
| | - Jae-Joon Yim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - Xiaobo Zhou
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Yohan Bossé
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, Quebec, Canada
- Department of Molecular Medicine, Laval University, Québec, Québec, Canada
| | - Ani Manichaikul
- Center for Public Health Genomics, University of Virginia, Charlottesville, VA, USA
- Department of Public Health Sciences, University of Virginia, Charlottesville, VA, USA
| | - Lies Lahousse
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands
- Department of Bioanalysis, Ghent University, Ghent, Belgium
| | - Edwin K Silverman
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - H Marike Boezen
- University of Groningen, University Medical Center Groningen, Department of Epidemiology, Groningen, the Netherlands
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, the Netherlands
| | - Louise V Wain
- Genetic Epidemiology Group, Department of Health Sciences, University of Leicester, Leicester, UK
- National Institute for Health Research Leicester Respiratory Biomedical Research Centre, Glenfield Hospital, Leicester, UK
| | - Martin D Tobin
- Genetic Epidemiology Group, Department of Health Sciences, University of Leicester, Leicester, UK
- National Institute for Health Research Leicester Respiratory Biomedical Research Centre, Glenfield Hospital, Leicester, UK
| | - Brian D Hobbs
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Michael H Cho
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA.
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, MA, USA.
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Filipczak PT, Leng S, Tellez CS, Do KC, Grimes MJ, Thomas CL, Walton-Filipczak SR, Picchi MA, Belinsky SA. p53-Suppressed Oncogene TET1 Prevents Cellular Aging in Lung Cancer. Cancer Res 2019; 79:1758-1768. [PMID: 30622117 DOI: 10.1158/0008-5472.can-18-1234] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 05/14/2018] [Accepted: 01/04/2019] [Indexed: 11/16/2022]
Abstract
The role of transcriptional regulator ten-eleven translocation methylcytosine dioxygenease 1 (TET1) has not been well characterized in lung cancer. Here we show that TET1 is overexpressed in adenocarcinoma and squamous cell carcinomas. TET1 knockdown reduced cell growth in vitro and in vivo and induced transcriptome reprogramming independent of its demethylating activity to affect key cancer signaling pathways. Wild-type p53 bound the TET1 promoter to suppress transcription, while p53 transversion mutations were most strongly associated with high TET1 expression. Knockdown of TET1 in p53-mutant cell lines induced senescence through a program involving generalized genomic instability manifested by DNA single- and double-strand breaks and induction of p21 that was synergistic with cisplatin and doxorubicin. These data identify TET1 as an oncogene in lung cancer whose gain of function via loss of p53 may be exploited through targeted therapy-induced senescence. SIGNIFICANCE: These studies identify TET1 as an oncogene in lung cancer whose gain of function following loss of p53 may be exploited by targeted therapy-induced senescence.See related commentary by Kondo, p. 1751.
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Affiliation(s)
| | - Shuguang Leng
- Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Carmen S Tellez
- Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Kieu C Do
- Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Marcie J Grimes
- Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Cynthia L Thomas
- Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | | | - Maria A Picchi
- Lovelace Respiratory Research Institute, Albuquerque, New Mexico
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28
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Verco J, Johnston W, Baltezor M, Kuehl PJ, Gigliotti A, Belinsky SA, Lopez A, Wolff R, Hylle L, diZerega G. Pharmacokinetic Profile of Inhaled Submicron Particle Paclitaxel (NanoPac ®) in a Rodent Model. J Aerosol Med Pulm Drug Deliv 2018; 32:99-109. [PMID: 30359162 PMCID: PMC6477588 DOI: 10.1089/jamp.2018.1467] [Citation(s) in RCA: 14] [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] [Indexed: 01/16/2023] Open
Abstract
Background: Inhaled chemotherapeutics may enhance pulmonary drug exposure to malignant lesions in the lung without substantially contributing to systemic toxicities. The pharmacokinetic profile of inhaled submicron particle paclitaxel (NanoPac®) in healthy rodent plasma and lung tissue is evaluated here to determine administration proof-of-principle. Methods: Healthy male Sprague Dawley rats received paclitaxel in one of three arms: intravenous nab-paclitaxel at 2.9 mg/kg (IVnP), inhaled NanoPac low dose (IHNP-LD) at 0.38 mg/kg, or inhaled NanoPac high dose (IHNP-HD) at 1.18 mg/kg. Plasma and lung tissue paclitaxel concentrations were determined using ultraperformance liquid chromatography tandem mass spectrometry from animals sacrificed at 10 time points ranging up to 2 weeks after administration. Peak concentration (Cmax), apparent residence half-life (T1/2), exposure (AUC(last)), and dose-normalized exposure (AUCD(last)) were determined. Pulmonary histopathology was performed on rats sacrificed at the 336-hour time point. Results: Paclitaxel was detectable and quantifiable in the rat lung for both inhaled NanoPac arms sampled at the final necropsy, 336 hours postadministration. Substantial paclitaxel deposition and retention resulted in an order of magnitude increase in dose-normalized pulmonary exposure over IVnP. Inhaled NanoPac arms had an order of magnitude lower plasma Cmax than IVnP, but followed a similar plasma T1/2 clearance (quantifiable only to 72 hours postadministration). Pulmonary histopathology found all treated animals indistinguishable from treatment-naive rats. Conclusion: In the rodent model, inhaled NanoPac demonstrated substantial deposition and retention of paclitaxel in sampled lung tissue. Further research to determine NanoPac's toxicity profile and potential efficacy as lung cancer therapy is underway.
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Affiliation(s)
- James Verco
- 1 US Biotest, Inc. , San Luis Obispo, California
| | | | | | | | | | | | - Anita Lopez
- 3 Lovelace Biomedical , Albuquerque, New Mexico
| | - Ronald Wolff
- 4 RK Wolff-Safety Consulting , Fort Myers, Florida
| | - Lauren Hylle
- 1 US Biotest, Inc. , San Luis Obispo, California
| | - Gere diZerega
- 1 US Biotest, Inc. , San Luis Obispo, California.,5 NanOlogy, LLC, Fort Worth, Texas
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29
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Kuehl PJ, Grimes MJ, Dubose D, Burke M, Revelli DA, Gigliotti AP, Belinsky SA, Tessema M. Inhalation delivery of topotecan is superior to intravenous exposure for suppressing lung cancer in a preclinical model. Drug Deliv 2018; 25:1127-1136. [PMID: 29779406 PMCID: PMC6058531 DOI: 10.1080/10717544.2018.1469688] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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: 11/18/2022] Open
Abstract
Intravenous (IV) topotecan is approved for the treatment of various malignancies including lung cancer but its clinical use is greatly undermined by severe hematopoietic toxicity. We hypothesized that inhalation delivery of topotecan would increase local exposure and efficacy against lung cancer while reducing systemic exposure and toxicity. These hypotheses were tested in a preclinical setting using a novel inhalable formulation of topotecan against the standard IV dose. Respirable dry-powder of topotecan was manufactured through spray-drying technology and the pharmacokinetics of 0.14 and 0.79 mg/kg inhalation doses were compared with 0.7 mg/kg IV dose. The efficacy of four weekly treatments with 1 mg/kg inhaled vs. 2 mg/kg IV topotecan were compared to untreated control using an established orthotopic lung cancer model for a fast (H1975) and moderately growing (A549) human lung tumors in the nude rat. Inhalation delivery increased topotecan exposure of lung tissue by approximately 30-fold, lung and plasma half-life by 5- and 4-folds, respectively, and reduced the maximum plasma concentration by 2-fold than the comparable IV dose. Inhaled topotecan improved the survival of rats with the fast-growing lung tumors from 7 to 80% and reduced the tumor burden of the moderately-growing lung tumors over 5- and 10-folds, respectively, than the 2-times higher IV topotecan and untreated control (p < .00001). These results indicate that inhalation delivery increases topotecan exposure of lung tissue and improves its efficacy against lung cancer while also lowering the effective dose and maximum systemic concentration that is responsible for its dose-limiting toxicity.
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Affiliation(s)
| | - Marcie J Grimes
- b Lung Cancer Program , Lovelace Respiratory Research Institute , Albuquerque , NM , USA
| | - Devon Dubose
- c Lonza-Bend Research Institute , Bend , OR , USA
| | | | | | | | - Steven A Belinsky
- b Lung Cancer Program , Lovelace Respiratory Research Institute , Albuquerque , NM , USA
| | - Mathewos Tessema
- b Lung Cancer Program , Lovelace Respiratory Research Institute , Albuquerque , NM , USA
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30
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Tessema M, Rossi MR, Picchi MA, Yingling CM, Lin Y, Ramalingam SS, Belinsky SA. Common cancer-driver mutations and their association with abnormally methylated genes in lung adenocarcinoma from never-smokers. Lung Cancer 2018; 123:99-106. [PMID: 30089603 PMCID: PMC6331003 DOI: 10.1016/j.lungcan.2018.07.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 03/12/2018] [Revised: 06/28/2018] [Accepted: 07/10/2018] [Indexed: 12/30/2022]
Abstract
OBJECTIVES Lung adenocarcinoma in never-smokers accounts for 15-20% of all lung cancer. Although targetable mutations are more prevalent in these tumors, the biological and clinical importance of coexisting and/or mutually exclusive abnormalities is just emerging. This study evaluates the relationships between common genetic and epigenetic aberrations in these tumors. MATERIALS AND METHODS Next-generation sequencing was employed to screen 20 commonly mutated cancer-driver genes in 112 lung adenocarcinomas from never-smokers. The relationship of these mutations with cancer-related methylation of 59 genes, and geographical/ethnic differences in the prevalence for mutations compared to multiple East Asian never-smoker lung adenocarcinoma cohorts was studied. RESULTS The most common driver mutation detected in 40% (45/112) of the tumors was EGFR, followed by TP53 (18%), SETD2 (11%), and SMARCA4 (11%). Over 72% (81/112) of the cases have mutation of at least one driver gene. While 30% (34/112) of the tumors have co-mutations of two or more genes, 42% (47/112) have only one driver gene mutation. Differences in the prevalence for some of these mutations were seen between adenocarcinomas in East Asian versus US (mainly Caucasian) never-smokers including a significantly lower rate of EGFR mutation among the US patients. Interestingly, aberrant methylation of multiple cancer-related genes was significantly associated with EGFR wildtype tumors. Among 15 differentially methylated genes by EGFR mutation, 14 were more commonly methylated in EGFR wildtype compared to mutant tumors. These findings were independently validated using publicly available data. CONCLUSION Most lung adenocarcinomas from never-smokers harbor targetable mutation/co-mutations. In the absence of EGFR mutation that drives 40% of these tumors, EGFR wildtype tumors appear to develop by acquiring aberrant promoter methylation that silences tumor-suppressor genes.
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Affiliation(s)
- Mathewos Tessema
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA.
| | - Michael R Rossi
- Departments of Pathology and Laboratory Medicine, Radiation Oncology, USA
| | - Maria A Picchi
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Christin M Yingling
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Yong Lin
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Suresh S Ramalingam
- Hematology and Oncology, Emory University School of Medicine, Winship Cancer Institute, Atlanta, GA, USA
| | - Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA.
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31
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Leng S, Diergaarde B, Picchi MA, Wilson DO, Gilliland FD, Yuan JM, Siegfried JM, Belinsky SA. Gene Promoter Hypermethylation Detected in Sputum Predicts FEV 1 Decline and All-Cause Mortality in Smokers. Am J Respir Crit Care Med 2018; 198:187-196. [PMID: 29437466 PMCID: PMC6058990 DOI: 10.1164/rccm.201708-1659oc] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 08/20/2017] [Accepted: 02/12/2018] [Indexed: 02/07/2023] Open
Abstract
RATIONALE Gene promoter hypermethylation detected in sputum assesses the extent of field cancerization and predicts lung cancer (LC) risk in ever-smokers. A rapid decline of FEV1 is a major driver for development of airway obstruction. OBJECTIVES To assess the effects of methylation of 12 genes on FEV1 decline and of FEV1 decline on subsequent LC incidence using two independent, longitudinal cohorts (i.e., LSC [Lovelace Smokers Cohort] and PLuSS [Pittsburgh Lung Screening Study]). METHODS Gene methylation was measured in sputum using two-stage nested methylation-specific PCR. The linear mixed effects model was used to assess the effects of studied variables on FEV1 decline. MEASUREMENTS AND MAIN RESULTS A dose-dependent relationship between number of genes methylated and FEV1 decline was identified, with smokers with three or more methylated genes having 27.8% and 10.3% faster FEV1 decline than smokers with zero to two methylated genes in the LSC and PLuSS cohort, respectively (all P < 0.01). High methylation in sputum was associated with a shorter latency for LC incidence (log-rank P = 0.0048) and worse all-cause mortality (log-rank P < 0.0001). Smokers with subsequent LC incidence had a more rapid annual decline of FEV1 (by 5.2 ml, P = 0.038) than smoker control subjects. CONCLUSIONS Gene methylation detected in sputum predicted FEV1 decline, LC incidence, and all-cause mortality in smokers. Rapid FEV1 decline may be a risk factor for LC incidence in smokers, which may explain a greater prevalence of airway obstruction seen in patients with LC.
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Affiliation(s)
- Shuguang Leng
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
- Cancer Control Research Program and
- School of Public Health, Qingdao University, Qingdao, Shandong, China
| | - Brenda Diergaarde
- Department of Human Genetics and
- Cancer Epidemiology and Prevention Program
- Lung Cancer Program, and
| | - Maria A. Picchi
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - David O. Wilson
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Frank D. Gilliland
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California; and
| | - Jian-Min Yuan
- Department of Epidemiology, Graduate School of Public Health, and
- Division of Cancer Control and Population Sciences, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania
| | | | - Steven A. Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
- Cancer Control Research Program and
- Cancer Genetics and Epigenetics Program, University of New Mexico Comprehensive Cancer Center, Albuquerque, New Mexico
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Gong Z, Wang D, Wang J, Buas MF, Liu S, Belinsky SA, Higgins MJ, Ambrosone CB. Abstract 472: Tumor DNA methylation and microRNA expression in breast cancer among American women of African or European ancestry. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-472] [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: 11/16/2022]
Abstract
Abstract
American women of African ancestry (AA) are more likely than those of European ancestry (EA) to be diagnosed with aggressive, estrogen receptor (ER) negative breast cancer, and to die of this disease. The reasons remain largely unknown. Epigenetic mechanisms, particularly differential DNA methylation and altered microRNA expression, may contribute to this racial disparity. We previously conducted genome-wide DNA methylation profiling of fresh-frozen breast tumor samples from 58 AA and 80 EA women, with subsequent analyses restricted to CpGs within coding genes. In this study, we focused on CpGs within loci encoding microRNAs, and sought to identify differentially methylated loci (DML) by ER status and by race. We identified a total of 297 DML (Δβ >0.1; FDR<0.05) between ER negative and ER positive breast tumors. Of these, 113 were differentially methylated regardless of race; 65 were specific to EAs; and 119 were specific to AAs. The top DML common to both races were located within miR-155HG, -365-1, -135b, -196b, and -190b, while the top race-specific DML were located within miR-1256, -1224, -1249, -9-3, -657/-338, and miR-25 (EA), or within miR-2053, -526a1, -518B, -489, and -125b1 (AA). We also identified 25 DML (Δβ >0.1; P<0.05) between AA and EA tumors. Among these 25 DML, all of which were hypomethylated in AAs versus EAs, three were specific to ER+ tumors (miR-548G/FILIP1L,-572, -661/PLEC1), 21 were specific to ER- tumors (e.g., miR-2053, -1323, -125b1), and one was common to both tumor subtypes (miR-662). In order to assess how DNA methylation may impact gene expression, we performed miRSeq on tumors from a subset of included women (29 AA and 29 EA). We observed that altered methylation at certain DML was inversely associated with microRNA expression; for example, three DML in the promoter region of miR-190b (Spearman's rho=-0.65, -0.68 and 0.55, respectively; all P<1.2x10-6), and two in miR-135b (rho=-0.56 and -0.59, respectively; both P<1.2x10-07). Interestingly, multiple loci within the promoter region of miR-190b were hypermethylated in ER- compared to ER+ tumors, and we further observed that miR-190b expression was significantly downregulated in ER- versus ER+ tumors (log2FC=-2.45 and -4.92 in EAs and AAs, respectively; FDR<0.05). Lower expression of miR-190 has been linked previously to reduced breast cancer survival, potentially reflecting effects on IGF-related pathways. In summary, based on genome-wide profiling of tumor DNA methylation and microRNA expression, our results suggest that DNA methylation patterns differ by tumor subtype and by race, and that this altered methylation may affect gene expression. These findings will provide the basis for further functional analyses, which are likely to improve our understanding of race-related tumor biological differences and lead to specific targeted preventative and therapeutic strategies.
Citation Format: Zhihong Gong, Dan Wang, Jie Wang, Matthew F. Buas, Song Liu, Steven A. Belinsky, Michael J. Higgins, Christine B. Ambrosone. Tumor DNA methylation and microRNA expression in breast cancer among American women of African or European ancestry [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 472.
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Affiliation(s)
| | - Dan Wang
- 2Eli Lilly and Company, Indianapolis, IN
| | - Jie Wang
- 3University at Buffalo, Buffalo, NY
| | | | - Song Liu
- 1Roswell Park Cancer Inst., Buffalo, NY
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Leng S, Picchi MA, Kang H, Wu G, Filipczak PT, Juri DE, Zhang X, Gauderman WJ, Gilliland FD, Belinsky SA. Dietary Nutrient Intake, Ethnicity, and Epigenetic Silencing of Lung Cancer Genes Detected in Sputum in New Mexican Smokers. Cancer Prev Res (Phila) 2017; 11:93-102. [PMID: 29118161 DOI: 10.1158/1940-6207.capr-17-0196] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 09/19/2017] [Accepted: 10/30/2017] [Indexed: 12/17/2022]
Abstract
Lung cancer gene methylation detected in sputum assesses field cancerization and predicts lung cancer incidence. Hispanic smokers have higher lung cancer susceptibility compared with non-Hispanic whites (NHW). We aimed to identify novel dietary nutrients affecting lung cancer gene methylation and determine the degree of ethnic disparity in methylation explained by diet. Dietary intakes of 139 nutrients were assessed using a validated Harvard food frequency questionnaire in 327 Hispanics and 1,502 NHWs from the Lovelace Smokers Cohort. Promoter methylation of 12 lung cancer genes was assessed in sputum DNA. A global association was identified between dietary intake and gene methylation (Ppermutation = 0.003). Seventeen nutrient measurements were identified with magnitude of association with methylation greater than that seen for folate. A stepwise approach identified B12, manganese, sodium, and saturated fat as the minimally correlated set of nutrients whose optimal intakes could reduce the methylation by 36% (Ppermutation < 0.001). Six protective nutrients included vitamin D, B12, manganese, magnesium, niacin, and folate. Approximately 42% of ethnic disparity in methylation was explained by insufficient intake of protective nutrients in Hispanics compared with NHWs. Functional validation of protective nutrients showed an enhanced DNA repair capacity toward double-strand DNA breaks, a mechanistic biomarker strongly linked to acquisition of lung cancer gene methylation in smokers. Dietary intake is a major modifiable factor for preventing promoter methylation of lung cancer genes in smokers' lungs. Complex dietary supplements could be developed on the basis of these protective nutrients for lung cancer chemoprevention in smokers. Hispanic smokers may benefit the most from this complex for reducing their lung cancer susceptibility. Cancer Prev Res; 11(2); 93-102. ©2017 AACR.
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Affiliation(s)
- Shuguang Leng
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico. .,Cancer Control (CaC) Research Program, University of New Mexico Cancer Center, Albuquerque, New Mexico
| | - Maria A Picchi
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Huining Kang
- Department of Internal Medicine and UNM Comprehensive Cancer Center, University of New Mexico Health Sciences Center, Albuquerque, New Mexico
| | - Guodong Wu
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Piotr T Filipczak
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Daniel E Juri
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Xiequn Zhang
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - W James Gauderman
- Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Frank D Gilliland
- Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico. .,Cancer Control (CaC) Research Program, University of New Mexico Cancer Center, Albuquerque, New Mexico
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Leng S, Picchi MA, Tesfaigzi Y, Wu G, Gauderman WJ, Xu F, Gilliland FD, Belinsky SA. Dietary nutrients associated with preservation of lung function in Hispanic and non-Hispanic white smokers from New Mexico. Int J Chron Obstruct Pulmon Dis 2017; 12:3171-3181. [PMID: 29133979 PMCID: PMC5669789 DOI: 10.2147/copd.s142237] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [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] [Indexed: 12/30/2022] Open
Abstract
Background COPD is the third leading cause of death in the United States. Cigarette smoking accelerates the age-related forced expiratory volume in 1 s (FEV1) decline, an important determinant for the genesis of COPD. Hispanic smokers have lower COPD prevalence and FEV1 decline than non-Hispanic whites (NHWs). Patients and methods A nutritional epidemiological study was conducted in the Lovelace Smokers cohort (LSC; n=1,829) and the Veterans Smokers cohort (n=508) to identify dietary nutrients (n=139) associated with average FEV1 and its decline and to assess whether nutrient intakes could explain ethnic disparity in FEV1 decline between Hispanics and NHW smokers. Results Nutrients discovered and replicated to be significantly associated with better average FEV1 included magnesium, folate, niacin, vitamins A and D, eicosenoic fatty acid (20:1n9), eicosapentaenoic acid (20:5n3), docosapentaenoic acid (DPA; 22:5n3), docosahexaenoic acid (22:6n3), and fiber. In addition, greater intakes of eicosenoic fatty acid and DPA were associated with slower FEV1 decline in the LSC. Among omega 3 polyunsaturated fatty acids, DPA is the most potent nutrient associated with better average FEV1 and slower FEV1 decline. Adverse effect of continuous current smoking on FEV1 decline was completely negated in LSC members with high DPA intake (>20 mg/day). Slower FEV1 decline in Hispanics compared to NHWs may be due to the greater protection of eicosenoic fatty acid and DPA for FEV1 decline rather than greater intake of protective nutrients in this ethnic group. Conclusion The protective nutrients for the preservation of FEV1 in ever smokers could lay foundation for designing individualized nutritional intervention targeting “optimal physiological levels” in human to improve lung function in ever smokers. Ethnic disparity in FEV1 decline may be explained by difference in magnitude of protection of dietary intakes of eicosenoic fatty acid and DPA between Hispanics and NHWs.
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Affiliation(s)
- Shuguang Leng
- The Lung Cancer Program, Lovelace Respiratory Research Institute.,Cancer Control Research Program, University of New Mexico Comprehensive Cancer Center
| | - Maria A Picchi
- The Lung Cancer Program, Lovelace Respiratory Research Institute
| | | | - Guodong Wu
- The Lung Cancer Program, Lovelace Respiratory Research Institute
| | - W James Gauderman
- Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Fadi Xu
- Pathophysiology Program, Lovelace Respiratory Research Institute
| | - Frank D Gilliland
- Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Steven A Belinsky
- The Lung Cancer Program, Lovelace Respiratory Research Institute.,Cancer Control Research Program, University of New Mexico Comprehensive Cancer Center.,Cancer Genetics and Epigenetics Program, University of New Mexico Comprehensive Cancer Center, Albuquerque, NM, USA
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Tessema M, Yingling CM, Picchi MA, Wu G, Ryba T, Lin Y, Bungum AO, Edell ES, Spira A, Belinsky SA. ANK1 Methylation regulates expression of MicroRNA-486-5p and discriminates lung tumors by histology and smoking status. Cancer Lett 2017; 410:191-200. [PMID: 28965852 DOI: 10.1016/j.canlet.2017.09.038] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [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: 07/07/2017] [Revised: 09/20/2017] [Accepted: 09/21/2017] [Indexed: 02/06/2023]
Abstract
The intragenic tumor-suppressor microRNA miR-486-5p is often down-regulated in non-small cell lung cancer (NSCLC) but the mechanism is unclear. This study investigated epigenetic co-regulation of miR-486-5p and its host gene ANK1. MiR-486-5p expression in lung tumors and cell lines was significantly reduced compared to normal lung (p < 0.001) and is strongly correlated with ANK1 expression. In vitro, siRNA-mediated ANK1 knockdown in NSCLC cells also reduced miR-486-5p while the DNA methylation inhibitor 5-aza-2'-deoxycytidine induced expression of both. ANK1 promoter CpG island was unmethylated in normal lung but methylated in 45% (118/262) lung tumors and 55% (17/31) NSCLC cell lines. After adjustment for tumor histology and smoking, methylation was significantly more prevalent in adenocarcinoma (101/200, 51%) compared to squamous cell carcinoma (17/62, 27%), p < 0.001; HR = 3.513 (CI: 1.818-6.788); and in smokers (73/128, 57%) than never-smokers (28/72, 39%), p = 0.014; HR = 2.086 (CI: 1.157-3.759). These results were independently validated using quantitative methylation data for 809 NSCLC cases from The Cancer Genome Atlas project. Together, our data indicate that aberrant ANK1 methylation is highly prevalent in lung cancer, discriminate tumors by histology and patients' smoking history, and contributes to miR-486-5p repression.
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Affiliation(s)
- Mathewos Tessema
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA.
| | - Christin M Yingling
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Maria A Picchi
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Guodong Wu
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Tyrone Ryba
- Division of Natural Sciences, New College of Florida, Sarasota, FL, USA
| | - Yong Lin
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Aaron O Bungum
- Departments of Medicine, Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN, USA
| | - Eric S Edell
- Departments of Medicine, Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN, USA
| | - Avrum Spira
- Department of Medicine, Boston University, Boston, MA, USA
| | - Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
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Belinsky SA, Leng S, Wu G, Thomas CL, Picchi MA, Lee SJ, Aisner S, Ramalingam S, Khuri FR, Karp DD. Gene Methylation Biomarkers in Sputum and Plasma as Predictors for Lung Cancer Recurrence. Cancer Prev Res (Phila) 2017; 10:635-640. [PMID: 28904059 DOI: 10.1158/1940-6207.capr-17-0177] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 07/20/2017] [Accepted: 08/31/2017] [Indexed: 12/25/2022]
Abstract
Detection of methylated genes in exfoliated cells from the lungs of smokers provides an assessment of the extent of field cancerization, is a validated biomarker for predicting lung cancer, and provides some discrimination when interrogated in blood. The potential utility of this 8-gene methylation panel for predicting tumor recurrence has not been assessed. The Eastern Cooperative Oncology Group initiated a prevention trial (ECOG-ACRIN5597) that enrolled resected stage I non-small cell lung cancer patients who were randomized 2:1 to receive selenized yeast versus placebo for 4 years. We conducted a correlative biomarker study to assess prevalence for methylation of the 8-gene panel in longitudinally collected sputum and blood after tumor resection to determine whether selenium alters their methylation profile and whether this panel predicts local and/or distant recurrence. Patients (N = 1,561) were enrolled into the prevention trial; 565 participated in the biomarker study with 122 recurrences among that group. Assessing the association between recurrence and risk of gene methylation longitudinally for up to 48 months showed a 1.4-fold increase in OR for methylation in sputum in the placebo group independent of location (local or distant). Kaplan-Meier curves evaluating the association between number of methylated genes and time to recurrence showed no increased risk in sputum, while a significant HR of 1.5 was seen in plasma. Methylation detection in sputum and blood is associated with risk for recurrence. Cancer Prev Res; 10(11); 635-40. ©2017 AACR.
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Affiliation(s)
- Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico.
| | - Shuguang Leng
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Guodong Wu
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Cynthia L Thomas
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Maria A Picchi
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Sandra J Lee
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Seena Aisner
- Rutgers New Jersey Medical School, Newark, New Jersey
| | - Suresh Ramalingam
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory University, Atlanta, Georgia
| | - Fadlo R Khuri
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory University, Atlanta, Georgia
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Xu X, Chen W, Leng S, Padilla MT, Saxton B, Hutt J, Tessema M, Kato K, Kim KC, Belinsky SA, Lin Y. Muc1 knockout potentiates murine lung carcinogenesis involving an epiregulin-mediated EGFR activation feedback loop. Carcinogenesis 2017; 38:604-614. [PMID: 28472347 DOI: 10.1093/carcin/bgx039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 04/22/2017] [Indexed: 12/14/2022] Open
Abstract
Mucin 1 (MUC1) is a tumor antigen that is aberrantly overexpressed in various cancers, including lung cancer. Our previous in vitro studies showed that MUC1 facilitates carcinogen-induced EGFR activation and transformation in human lung bronchial epithelial cells (HBECs), which along with other reports suggests an oncogenic property for MUC1 in lung cancer. However, direct evidence for the role of MUC1 in lung carcinogenesis is lacking. In this study, we used the 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK)-induced A/J mouse lung tumor model to investigate the effect of whole-body Muc1 knockout (KO) on carcinogen-induced lung carcinogenesis. Surprisingly, lung tumor multiplicity was significantly increased in Muc1 KO compared to wild-type (WT) mice. The EGFR/AKT pathway was unexpectedly activated, and expression of the EGFR ligand epiregulin (EREG) was increased in the lung tissues of the Muc1 KO compared to the WT mice. EREG stimulated proliferation and protected against cigarette smoke extract (CSE)-induced cytotoxicity in in vitro cultured human bronchial epithelial cells. Additionally, we determined that MUC1 was expressed in human fibroblast cell lines where it suppressed CSE-induced EREG production. Further, suppression of MUC1 cellular activity with GO-201 enhanced EREG production in lung cancer cells, which in turn protected cancer cells from GO-201-induced cell death. Moreover, an inverse association between MUC1 and EREG was detected in human lung cancer, and EREG expression was inversely associated with patient survival. Together, these results support a promiscuous role of MUC1 in lung cancer development that may be related to cell-type specific functions of MUC1 in the tumor microenvironment, and MUC1 deficiency in fibroblasts and malignant cells results in increased EREG production that activates the EGFR pathway for lung carcinogenesis.
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Affiliation(s)
- Xiuling Xu
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest DR. SE, Albuquerque, NM 87108, USA and
| | - Wenshu Chen
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest DR. SE, Albuquerque, NM 87108, USA and
| | - Shuguang Leng
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest DR. SE, Albuquerque, NM 87108, USA and
| | - Mabel T Padilla
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest DR. SE, Albuquerque, NM 87108, USA and
| | - Bryanna Saxton
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest DR. SE, Albuquerque, NM 87108, USA and
| | - Julie Hutt
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest DR. SE, Albuquerque, NM 87108, USA and
| | - Mathewos Tessema
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest DR. SE, Albuquerque, NM 87108, USA and
| | - Kosuke Kato
- Department of Otolaryngology, University of Arizona College of Medicine, Tucson, AZ 86715, USA
| | - Kwang Chul Kim
- Department of Otolaryngology, University of Arizona College of Medicine, Tucson, AZ 86715, USA
| | - Steven A Belinsky
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest DR. SE, Albuquerque, NM 87108, USA and
| | - Yong Lin
- Molecular Biology and Lung Cancer Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest DR. SE, Albuquerque, NM 87108, USA and
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Leng S, Wu G, Klinge DM, Thomas CL, Casas E, Picchi MA, Stidley CA, Lee SJ, Aisner S, Siegfried JM, Ramalingam S, Khuri FR, Karp DD, Belinsky SA. Gene methylation biomarkers in sputum as a classifier for lung cancer risk. Oncotarget 2017; 8:63978-63985. [PMID: 28969046 PMCID: PMC5609978 DOI: 10.18632/oncotarget.19255] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 06/05/2017] [Indexed: 01/01/2023] Open
Abstract
CT screening for lung cancer reduces mortality, but will cost Medicare ∼2 billion dollars due in part to high false positive rates. Molecular biomarkers could augment current risk stratification used to select smokers for screening. Gene methylation in sputum reflects lung field cancerization that remains in lung cancer patients post-resection. This population was used in conjunction with cancer-free smokers to evaluate classification accuracy of a validated eight-gene methylation panel in sputum for cancer risk. Sputum from resected lung cancer patients (n=487) and smokers from Lovelace (n=1380) and PLuSS (n=718) cohorts was studied for methylation of an 8-gene panel. Area under a receiver operating characteristic curve was calculated to assess the prediction performance in logistic regressions with different sets of variables. The prevalence for methylation of all genes was significantly increased in the ECOG-ACRIN patients compared to cancer-free smokers as evident by elevated odds ratios that ranged from 1.6 to 8.9. The gene methylation panel showed lung cancer prediction accuracy of 82–86% and with addition of clinical variables improved to 87–90%. With sensitivity at 95%, specificity increased from 25% to 54% comparing clinical variables alone to their inclusion with methylation. The addition of methylation biomarkers to clinical variables would reduce false positive screens by ruling out one-third of smokers eligible for CT screening and could increase cancer detection rates through expanding risk assessment criteria.
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Affiliation(s)
- Shuguang Leng
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Guodong Wu
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Donna M Klinge
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Cynthia L Thomas
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Elia Casas
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Maria A Picchi
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Christine A Stidley
- Department of Internal Medicine, University of New Mexico, Albuquerque, NM, USA
| | - Sandra J Lee
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Seena Aisner
- Rutgers New Jersey Medical School, Newark, NJ, USA
| | - Jill M Siegfried
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - Suresh Ramalingam
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory University, Atlanta, GA, USA
| | - Fadlo R Khuri
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory University, Atlanta, GA, USA
| | | | - Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
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Filipczak PT, Leng S, Tellez CS, Belinsky SA. Abstract 4460: TET1 over expression contributes to lung cancer malignancy. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-4460] [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: 11/16/2022]
Abstract
Abstract
Epigenetic alterations are a leading cause of lung carcinogenesis and malignancy. While the role of enzymes catalyzing cytosine-guanine (CpG) island methylation and chromatin modifications has been extensively studied, the role of the recently discovered demethylating enzymes represented by ten-eleven translocation methylcytosine dioxygenases (TETs) remains unknown. The goal of this study was to investigate the expression and functional significance of the TET1 gene in non-small cell lung cancer (NSCLC). QRT-PCR revealed 2- to 30-fold over expression of TET1 in 52% of squamous cell carcinoma (SCC) and 40% of adenocarcinoma (AdC) tumors compared to paired normal lung tissue. This result was validated using The Cancer Genome Atlas (TCGA) database with TET1 over expressed in 72% of SCCs and 53% of AdCs. Elevated levels of TET1 transcript were associated with increased protein levels in NSCLC cell lines compared to normal human bronchial epithelial cells (HBECs). A reporter assay analysis defined the promoter region critical for elevated transcription of the TET1 gene using lung cancer cell lines, and studies to identify the transcription factors underlying the increase in expression are underway. Transient knock down of TET1 expression in NSCLC cell lines caused global changes in the transcriptome, reduced cell proliferation, colony formation, and inhibited growth of tumor xenografts in nude mice. Cellular senescence mediated by p21 signaling and associated with β-galactosidase activation was identified as one mechanism underlying growth inhibition. This study suggests that TET1 may function as an oncogene contributing to the lung cancer malignant phenotype and thus, could serve as a potential new target for treatment. (Supported by R01 CA183296)
Citation Format: Piotr Teodor Filipczak, Shuguang Leng, Carmen S. Tellez, Steven A. Belinsky. TET1 over expression contributes to lung cancer malignancy [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 4460. doi:10.1158/1538-7445.AM2017-4460
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Affiliation(s)
| | - Shuguang Leng
- Lovelace Respiratory Research Inst., Albuquerque, NM
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Leng S, Picchi M, Filipczak P, Gilliland F, Belinsky SA. Abstract 4257: Dietary nutrient intake, ethnicity, and epigenetic silencing of lung cancer genes detected in sputum in New Mexican smokers. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-4257] [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: 11/16/2022]
Abstract
Abstract
Promoter hypermethylation of lung cancer (LC) genes detected in sputum assesses field cancerization and predicts LC risk. Hispanic smokers have greater risk for methylation than non-Hispanic Whites (NHW). We aimed to identify novel dietary nutrients affecting methylation of LC genes in sputum and determine the degree of ethnic disparity explained by diet. A cross-sectional population-based study was conducted with dietary intake assessed using a validated Harvard food frequency questionnaire in 327 Hispanics and 1502 NHWs from the Lovelace Smokers cohort (LSC). Twelve LC genes with diverse cellular functions whose concomitant methylation strongly predicted LC risk were studied. A global association was identified between dietary intake and gene methylation (Ppermutation=0.003). Seventeen nutrient measurements were associated with methylation with magnitude greater than seen for folate and these nutrients together accounted for 36% of the variance in methylation. Six protective nutrients were identified and their insufficient intake in Hispanics explained approximately 42% of ethnic disparity in methylation. Functional validation of protective nutrients that also explained ethnic disparity was provided by showing an enhanced DNA repair capacity towards double-strand DNA breaks, a mechanistic biomarker strongly linked to acquisition of LC gene methylation in smokers. Dietary intake is a major modifiable factor for preventing promoter methylation of LC genes in smokers’ lungs. Altering the diet in Hispanics may alleviate ethnic disparity for methylation. Complex dietary supplements could be developed based on these protective nutrients for LC chemoprevention in smokers. This study was funded by NIH R01 CA097356, NIH/NCI P30 CA118100, and the State of New Mexico as a direct appropriation from the Tobacco Settlement Fund.
Citation Format: Shuguang Leng, Maria Picchi, Piotr Filipczak, Frank Gilliland, Steven A. Belinsky. Dietary nutrient intake, ethnicity, and epigenetic silencing of lung cancer genes detected in sputum in New Mexican smokers [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 4257. doi:10.1158/1538-7445.AM2017-4257
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Affiliation(s)
- Shuguang Leng
- 1Lovelace Respiratory Research Inst., Albuquerque, NM
| | - Maria Picchi
- 1Lovelace Respiratory Research Inst., Albuquerque, NM
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Picchi MA, Leng S, Wu G, Klinge DM, Thomas CL, Casas E, Stidley CA, Lee SJ, Aisner S, Siegfried JM, Ramalingam S, Khuri FR, Karp DD, Belinsky SA. Abstract 3261: Gene methylation biomarkers in sputum as a classifier for lung cancer risk. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-3261] [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: 11/16/2022]
Abstract
Abstract
Lung cancer is the leading cause of cancer death primarily because it is often diagnosed at an advanced stage. Results from the National Lung Screening Trial (NLST) showed that CT screening can reduce lung cancer mortality by 20%, but the high number of false positives and need for additional testing suggest that better risk classification of smokers prior to screening could save more lives with less cost and improved efficiency. Furthermore, eligibility criteria for NLST were restricted to smokers ages of 55-74 with >30 pack-years of smoking and < 15y since smoking cessation, which captures only ~40% of incident lung cancer cases. Molecular biomarkers could augment current risk stratification used to select smokers for screening. We have shown that gene specific promoter hypermethylation detected in sputum provides an assessment of field cancerization within the lungs of smokers that in turn predicts lung cancer. The current study addressed whether our validated 8-gene methylation panel could be extended to improve the existing risk prediction model used to recommend people for a CT screen by evaluating methylation in 487 resected Stage I lung cancer patients from the ECOG-ACRIN5597 trial (field of injury remains), 1378 current and former smokers from the Lovelace Smokers cohort (LSC) and 718 current and former smokers from the PLuSS cohort. Our initial analysis was restricted to individuals from each cohort who met NLST criteria for CT screening (n=371 ECOG-ACRIN, n=466 LSC and n=597 PLuSS). The methylation prevalence of all 8 genes was significantly increased in resected lung cancer patients compared to cancer-free smokers (odds ratios 1.6 to 8.9). The area under the receiver operator characteristic curve (AUC) was used to evaluate classification accuracy of different logistic regression models. Classification accuracy for clinical risk factors alone was 74-76%, methylation alone, 82-86%; and clinical risk factors plus methylation, 87-90% (p<10-9 - 10-16). Setting the sensitivity at 95% improved specificity from 25% to 54% with both methylation and clinical factors in the model. Assessment of the performance of the gene methylation panel in all of the cancer patients and smokers did not reduce classification accuracy or increase specificity. Implementation of gene methylation biomarkers for screening could be a paradigm shift for lung cancer management by providing a much improved risk assessment model that will allow for expanding the number of smokers considered for screening, decreasing by one-third the actual number referred, and reducing mortality through increasing the CT positive predictive value. (Supported largely by R01 CA095568 and in part P30 CA118100)
Citation Format: Maria A. Picchi, Shuguang Leng, Guodong Wu, Donna M. Klinge, Cynthia L. Thomas, Elia Casas, Christine A. Stidley, Sandra J. Lee, Seena Aisner, Jill M. Siegfried, Suresh Ramalingam, Fadlo R. Khuri, Daniel D. Karp, Steven A. Belinsky. Gene methylation biomarkers in sputum as a classifier for lung cancer risk [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 3261. doi:10.1158/1538-7445.AM2017-3261
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Affiliation(s)
| | - Shuguang Leng
- 1Lovelace Respiratory Research Inst., Albuquerque, NM
| | - Guodong Wu
- 1Lovelace Respiratory Research Inst., Albuquerque, NM
| | | | | | - Elia Casas
- 1Lovelace Respiratory Research Inst., Albuquerque, NM
| | | | | | - Seena Aisner
- 4Rutgers New Jersey Medical School, New Brunswick, NJ
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Tessema M, Yingling CM, Picchi MA, Wu G, Ryba T, Lin Y, Belinsky SA. Abstract 5384: Aberrant methylation of ANK1, the host gene for miR-486, distinguishes lung tumors by histology and smoking status. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-5384] [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: 11/16/2022]
Abstract
Abstract
MicroRNAs (miRs) regulate many fundamental biological processes primarily through inhibiting the transcription and/or translation of their target genes. MiR-486 is an intragenic miR located within ANK1, a gene that encodes for the adapter protein ankyrin-1. Although the tumor suppressor role of miR-486-5p and its down-regulation in non-small cell lung cancer (NSCLC) is well established, the mechanism(s) leading to its repression is unclear. In this study, we investigated epigenetic regulation of ANK1 and its impact on miR-486-5p expression in lung cancer. DNA methylation and expression levels of ANK1 and miR-486-5p in lung tumor-normal pairs, NSCLC cell lines, as well as various normal blood and lung epithelial cell controls were evaluated using qualitative and quantitative assays. The genome-wide impact of epigenetic repression of ANK1 was evaluated using siRNA. The results show that miR-486-5p expression in lung tumors and NSCLC cell lines was significantly reduced compared to distant normal lung tissue pairs (p = 0.0006) and strongly correlated with ANK1 expression. In NSCLC cell lines with strongly reduced expression of miR-486-5p and ANK1, treatment with the DNA methylation inhibitor 5-aza-2-deoxycytidine significantly increased the expression of both the miR and its host gene. Human ANK1 is a large (~230kb) gene with three promoter regions regulating tissue specific expression of three (ANK1B, ANK1E, and ANK1A) transcript variants. ANK1B (the longest of the three variants) is the primary transcript expressed in lung tissue, while ANK1E and ANK1A are weakly and rarely expressed in lung epithelial cells. ANK1B promoter contains a large CpG island that is methylated in 45% (118/262) of lung tumors but not in normal lung or blood samples. The prevalence for ANK1B methylation was significantly higher (p < 0.001) in lung adenocarcinoma (101/200, 51%) compared to lung squamous cell carcinomas (17/62, 27%) after adjustment for smoking. Comparison of methylation by patients’ smoking history also revealed that ANK1B methylation in lung adenocarcinoma was significantly more prevalent in smokers (57%, 73/128) than in never smokers (39%, 28/72), p = 0.014; HR = 2.086 (CI: 1.157 - 3.759). These findings were confirmed by quantitative methylation assays and independently validated using publicly available methylation data for large (n = 809) NSCLC cases from the Cancer Genome Atlas database. Finally, siRNA mediated knockdown of ANK1 in lung cancer cell lines followed by transcriptome-wide expression and pathway analysis revealed that ANK1 repression primarily alters cancer development and progression pathways. Taken together, our data indicates that aberrant methylation of ANK1B promoter is highly prevalent in lung cancer, discriminates lung tumors by histology and smoking history, and represses the expression of ANK1 along with the tumor-suppressor miR-486-5p it hosts within its last intron.
Citation Format: Mathewos Tessema, Christin M. Yingling, Maria A. Picchi, Guodong Wu, Tyron Ryba, Young Lin, Steven A. Belinsky. Aberrant methylation of ANK1, the host gene for miR-486, distinguishes lung tumors by histology and smoking status [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 5384. doi:10.1158/1538-7445.AM2017-5384
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Affiliation(s)
| | | | | | - Guodong Wu
- 1Lovelace Respiratory Research Institute, Albuquerque, NM
| | | | - Young Lin
- 1Lovelace Respiratory Research Institute, Albuquerque, NM
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Hulbert A, Jusue-Torres I, Stark A, Chen C, Rodgers K, Lee B, Griffin C, Yang A, Huang P, Wrangle J, Belinsky SA, Wang TH, Yang SC, Baylin SB, Brock MV, Herman JG. Early Detection of Lung Cancer Using DNA Promoter Hypermethylation in Plasma and Sputum. Clin Cancer Res 2017; 23:1998-2005. [PMID: 27729459 PMCID: PMC6366618 DOI: 10.1158/1078-0432.ccr-16-1371] [Citation(s) in RCA: 164] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 09/17/2016] [Accepted: 09/20/2016] [Indexed: 12/12/2022]
Abstract
Purpose: CT screening can reduce death from lung cancer. We sought to improve the diagnostic accuracy of lung cancer screening using ultrasensitive methods and a lung cancer-specific gene panel to detect DNA methylation in sputum and plasma.Experimental Design: This is a case-control study of subjects with suspicious nodules on CT imaging. Plasma and sputum were obtained preoperatively. Cases (n = 150) had pathologic confirmation of node-negative (stages I and IIA) non-small cell lung cancer. Controls (n = 60) had non-cancer diagnoses. We detected promoter methylation using quantitative methylation-specific real-time PCR and methylation-on-beads for cancer-specific genes (SOX17, TAC1, HOXA7, CDO1, HOXA9, and ZFP42).Results: DNA methylation was detected in plasma and sputum more frequently in people with cancer compared with controls (P < 0.001) for five of six genes. The sensitivity and specificity for lung cancer diagnosis using the best individual genes was 63% to 86% and 75% to 92% in sputum, respectively, and 65% to 76% and 74% to 84% in plasma, respectively. A three-gene combination of the best individual genes has sensitivity and specificity of 98% and 71% using sputum and 93% and 62% using plasma. Area under the receiver operating curve for this panel was 0.89 [95% confidence interval (CI), 0.80-0.98] in sputum and 0.77 (95% CI, 0.68-0.86) in plasma. Independent blinded random forest prediction models combining gene methylation with clinical information correctly predicted lung cancer in 91% of subjects using sputum detection and 85% of subjects using plasma detection.Conclusions: High diagnostic accuracy for early-stage lung cancer can be obtained using methylated promoter detection in sputum or plasma. Clin Cancer Res; 23(8); 1998-2005. ©2016 AACR.
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Affiliation(s)
- Alicia Hulbert
- Sidney Kimmel Cancer Center, Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Ignacio Jusue-Torres
- Department of Neurosurgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Alejandro Stark
- Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, Maryland
| | - Chen Chen
- Sidney Kimmel Cancer Center, Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Thoracic Surgery, Second Xiangya Hospital of Central South University, Changsha, Hunan, PR China
| | - Kristen Rodgers
- Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Beverly Lee
- Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Candace Griffin
- Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Andrew Yang
- Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Peng Huang
- Sidney Kimmel Cancer Center, Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Biostatistics, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - John Wrangle
- Department of Medicine, Medical University of South Carolina, Charleston, South Carolina
| | - Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Tza-Huei Wang
- Sidney Kimmel Cancer Center, Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, Maryland
- Department of Biomedical Engineering and Institute for NanoBioTechnology, The Johns Hopkins University, School of Medicine, Baltimore, Maryland
| | - Stephen C Yang
- Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Stephen B Baylin
- Sidney Kimmel Cancer Center, Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Malcolm V Brock
- Sidney Kimmel Cancer Center, Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - James G Herman
- Sidney Kimmel Cancer Center, Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, Maryland.
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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Hobbs BD, de Jong K, Lamontagne M, Bossé Y, Shrine N, Artigas MS, Wain LV, Hall IP, Jackson VE, Wyss AB, London SJ, North KE, Franceschini N, Strachan DP, Beaty TH, Hokanson JE, Crapo JD, Castaldi PJ, Chase RP, Bartz TM, Heckbert SR, Psaty BM, Gharib SA, Zanen P, Lammers JW, Oudkerk M, Groen HJ, Locantore N, Tal-Singer R, Rennard SI, Vestbo J, Timens W, Paré PD, Latourelle JC, Dupuis J, O’Connor GT, Wilk JB, Kim WJ, Lee MK, Oh YM, Vonk JM, de Koning HJ, Leng S, Belinsky SA, Tesfaigzi Y, Manichaikul A, Wang XQ, Rich SS, Barr RG, Sparrow D, Litonjua AA, Bakke P, Gulsvik A, Lahousse L, Brusselle GG, Stricker BH, Uitterlinden AG, Ampleford EJ, Bleecker ER, Woodruff PG, Meyers DA, Qiao D, Lomas DA, Yim JJ, Kim DK, Hawrylkiewicz I, Sliwinski P, Hardin M, Fingerlin TE, Schwartz DA, Postma DS, MacNee W, Tobin MD, Silverman EK, Boezen HM, Cho MH. Genetic loci associated with chronic obstructive pulmonary disease overlap with loci for lung function and pulmonary fibrosis. Nat Genet 2017; 49:426-432. [PMID: 28166215 PMCID: PMC5381275 DOI: 10.1038/ng.3752] [Citation(s) in RCA: 241] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 11/23/2016] [Indexed: 12/15/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is a leading cause of mortality worldwide. We performed a genetic association study in 15,256 cases and 47,936 controls, with replication of select top results (P < 5 × 10-6) in 9,498 cases and 9,748 controls. In the combined meta-analysis, we identified 22 loci associated at genome-wide significance, including 13 new associations with COPD. Nine of these 13 loci have been associated with lung function in general population samples, while 4 (EEFSEC, DSP, MTCL1, and SFTPD) are new. We noted two loci shared with pulmonary fibrosis (FAM13A and DSP) but that had opposite risk alleles for COPD. None of our loci overlapped with genome-wide associations for asthma, although one locus has been implicated in joint susceptibility to asthma and obesity. We also identified genetic correlation between COPD and asthma. Our findings highlight new loci associated with COPD, demonstrate the importance of specific loci associated with lung function to COPD, and identify potential regions of genetic overlap between COPD and other respiratory diseases.
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Affiliation(s)
- Brian D. Hobbs
- Channing Division of Network Medicine, Brigham and Women’s
Hospital, Boston, MA, USA,Division of Pulmonary and Critical Care Medicine, Brigham and
Women’s Hospital, Boston, MA, USA
| | - Kim de Jong
- University of Groningen, University Medical Center Groningen,
Department of Epidemiology, Groningen, the Netherlands,University of Groningen, University Medical Center Groningen,
Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, the
Netherlands
| | - Maxime Lamontagne
- Institut universitaire de cardiologie et de pneumologie de
Québec, Québec, Canada
| | - Yohan Bossé
- Institut universitaire de cardiologie et de pneumologie de
Québec, Québec, Canada,Department of Molecular Medicine, Laval University, Québec,
Canada
| | - Nick Shrine
- Genetic Epidemiology Group, Department of Health Sciences,
University of Leicester, Leicester, UK
| | - María Soler Artigas
- Genetic Epidemiology Group, Department of Health Sciences,
University of Leicester, Leicester, UK
| | - Louise V. Wain
- Genetic Epidemiology Group, Department of Health Sciences,
University of Leicester, Leicester, UK
| | - Ian P. Hall
- Division of Respiratory Medicine, Queen’s Medical Centre,
University of Nottingham, Nottingham, UK
| | - Victoria E. Jackson
- Genetic Epidemiology Group, Department of Health Sciences,
University of Leicester, Leicester, UK
| | - Annah B. Wyss
- Epidemiology Branch, National Institute of Environmental Health
Sciences, National Institutes of Health, Department of Health and Human Services,
Research Triangle Park, NC, USA
| | - Stephanie J. London
- Epidemiology Branch, National Institute of Environmental Health
Sciences, National Institutes of Health, Department of Health and Human Services,
Research Triangle Park, NC, USA
| | - Kari E. North
- Department of Epidemiology, University of North Carolina, Chapel
Hill, NC, USA
| | - Nora Franceschini
- Department of Epidemiology, University of North Carolina, Chapel
Hill, NC, USA
| | - David P. Strachan
- Population Health Research Institute, St. George’s,
University of London, London, UK
| | - Terri H. Beaty
- Johns Hopkins University Bloomberg School of Public Health,
Baltimore, MD, USA
| | - John E. Hokanson
- Department of Epidemiology, University of Colorado Anschutz Medical
Campus, Aurora, CO, USA
| | - James D. Crapo
- Department of Medicine, Division of Pulmonary and Critical Care
Medicine, National Jewish Health, Denver, CO, USA
| | - Peter J. Castaldi
- Channing Division of Network Medicine, Brigham and Women’s
Hospital, Boston, MA, USA,Division of General Internal Medicine, Brigham and Women’s
Hospital, Boston, MA, USA
| | - Robert P. Chase
- Channing Division of Network Medicine, Brigham and Women’s
Hospital, Boston, MA, USA
| | - Traci M. Bartz
- Cardiovascular Health Research Unit, University of Washington,
Seattle, WA, USA,Department of Medicine, University of Washington, Seattle, WA,
USA,Department of Biostatistics, University of Washington, Seattle, WA,
USA
| | - Susan R. Heckbert
- Cardiovascular Health Research Unit, University of Washington,
Seattle, WA, USA,Department of Epidemiology, University of Washington, Seattle, WA,
USA,Group Health Research Institute, Group Health Cooperative, Seattle,
WA, USA
| | - Bruce M. Psaty
- Cardiovascular Health Research Unit, University of Washington,
Seattle, WA, USA,Department of Medicine, University of Washington, Seattle, WA,
USA,Department of Epidemiology, University of Washington, Seattle, WA,
USA,Group Health Research Institute, Group Health Cooperative, Seattle,
WA, USA,Department of Health Services, University of Washington, Seattle,
WA, USA
| | - Sina A. Gharib
- Computational Medicine Core, Center for Lung Biology, UW Medicine
Sleep Center, Department of Medicine, University of Washington, Seattle, WA,
USA
| | - Pieter Zanen
- Department of Pulmonology, University Medical Center Utrecht,
University of Utrecht, Utrecht, the Netherlands
| | - Jan W. Lammers
- Department of Pulmonology, University Medical Center Utrecht,
University of Utrecht, Utrecht, the Netherlands
| | - Matthijs Oudkerk
- University of Groningen, University Medical Center Groningen,
Center for Medical Imaging, the Netherlands
| | - H. J. Groen
- University of Groningen, University Medical Center Groningen,
Department of Pulmonology, Groningen, the Netherlands
| | | | | | - Stephen I. Rennard
- Pulmonary, Critical Care, Sleep and Allergy Division, Department of
Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA,Clinical Discovery Unit, AstraZeneca, Cambridge, UK
| | - Jørgen Vestbo
- School of Biological Sciences, University of Manchester,
Manchester, UK
| | - Wim Timens
- Department of Pathology and Medical Biology, University of
Groningen, University Medical Center Groningen, GRIAC Research Institute, Groningen,
the Netherlands
| | - Peter D. Paré
- University of British Columbia Center for Heart Lung Innovation and
Institute for Heart and Lung Health, St Paul’s Hospital, Vancouver, British
Columbia, Canada
| | | | - Josée Dupuis
- Department of Biostatistics, Boston University School of Public
Health, Boston, MA, USA,The National Heart, Lung, and Blood Institute’s Framingham
Heart Study, Framingham, MA, USA
| | - George T. O’Connor
- The National Heart, Lung, and Blood Institute’s Framingham
Heart Study, Framingham, MA, USA,Pulmonary Center, Department of Medicine, Boston University School
of Medicine, Boston, MA, USA
| | - Jemma B. Wilk
- The National Heart, Lung, and Blood Institute’s Framingham
Heart Study, Framingham, MA, USA
| | - Woo Jin Kim
- Department of Internal Medicine and Environmental Health Center,
School of Medicine, Kangwon National University, Chuncheon, South Korea
| | - Mi Kyeong Lee
- Department of Internal Medicine and Environmental Health Center,
School of Medicine, Kangwon National University, Chuncheon, South Korea
| | - Yeon-Mok Oh
- Department of Pulmonary and Critical Care Medicine, and Clinical
Research Center for Chronic Obstructive Airway Diseases, Asan Medical Center,
University of Ulsan College of Medicine, Seoul, South Korea
| | - Judith M. Vonk
- University of Groningen, University Medical Center Groningen,
Department of Epidemiology, Groningen, the Netherlands,University of Groningen, University Medical Center Groningen,
Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, the
Netherlands
| | - Harry J. de Koning
- Department of Public Health, Erasmus Medical Center Rotterdam,
Rotterdam, the Netherlands
| | - Shuguang Leng
- Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | | | | | - Ani Manichaikul
- Center for Public Health Genomics, University of Virginia,
Charlottesville, VA, USA,Department of Public Health Sciences, University of Virginia,
Charlottesville, VA, USA
| | - Xin-Qun Wang
- Department of Public Health Sciences, University of Virginia,
Charlottesville, VA, USA
| | - Stephen S. Rich
- Center for Public Health Genomics, University of Virginia,
Charlottesville, VA, USA,Department of Public Health Sciences, University of Virginia,
Charlottesville, VA, USA
| | - R Graham Barr
- Department of Medicine, College of Physicians and Surgeons and
Department of Epidemiology, Mailman School of Public Health, Columbia University,
New York, NY, USA
| | - David Sparrow
- VA Boston Healthcare System and Department of Medicine, Boston
University School of Medicine, Boston, MA, USA
| | - Augusto A. Litonjua
- Channing Division of Network Medicine, Brigham and Women’s
Hospital, Boston, MA, USA,Division of Pulmonary and Critical Care Medicine, Brigham and
Women’s Hospital, Boston, MA, USA
| | - Per Bakke
- Department of Clinical Science, University of Bergen, Bergen,
Norway
| | - Amund Gulsvik
- Department of Clinical Science, University of Bergen, Bergen,
Norway
| | - Lies Lahousse
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, the
Netherlands,Department of Respiratory Medicine, Ghent University Hospital,
Ghent, Belgium
| | - Guy G. Brusselle
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, the
Netherlands,Department of Respiratory Medicine, Ghent University Hospital,
Ghent, Belgium,Department of Respiratory Medicine, Erasmus Medical Center,
Rotterdam, the Netherlands
| | - Bruno H. Stricker
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, the
Netherlands,Netherlands Health Care Inspectorate, The Hague, the
Netherlands,Department of Internal Medicine, Erasmus Medical Center, Rotterdam,
the Netherlands,Netherlands Genomics Initiative (NGI)-sponsored Netherlands
Consortium for Healthy Aging (NCHA), Leiden, the Netherlands
| | - André G. Uitterlinden
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, the
Netherlands,Department of Internal Medicine, Erasmus Medical Center, Rotterdam,
the Netherlands,Netherlands Genomics Initiative (NGI)-sponsored Netherlands
Consortium for Healthy Aging (NCHA), Leiden, the Netherlands
| | - Elizabeth J. Ampleford
- Center for Genomics and Personalized Medicine Research, Wake Forest
University School of Medicine, Winston Salem, NC, USA
| | - Eugene R. Bleecker
- Center for Genomics and Personalized Medicine Research, Wake Forest
University School of Medicine, Winston Salem, NC, USA
| | - Prescott G. Woodruff
- Cardiovascular Research Institute and the Department of Medicine,
Division of Pulmonary, Critical Care, Sleep, and Allergy, University of California
at San Francisco, San Francisco, CA, USA
| | - Deborah A. Meyers
- Center for Genomics and Personalized Medicine Research, Wake Forest
University School of Medicine, Winston Salem, NC, USA
| | - Dandi Qiao
- Channing Division of Network Medicine, Brigham and Women’s
Hospital, Boston, MA, USA
| | | | - Jae-Joon Yim
- Division of Pulmonary and Critical Care Medicine, Department of
Internal Medicine, Seoul National University College of Medicine, Seoul, South
Korea
| | - Deog Kyeom Kim
- Seoul National University College of Medicine, SMG-SNU Boramae
Medical Center, Seoul, South Korea
| | - Iwona Hawrylkiewicz
- 2nd Department of Respiratory Medicine, Institute of Tuberculosis
and Lung Diseases, Warsaw, Poland
| | - Pawel Sliwinski
- 2nd Department of Respiratory Medicine, Institute of Tuberculosis
and Lung Diseases, Warsaw, Poland
| | - Megan Hardin
- Channing Division of Network Medicine, Brigham and Women’s
Hospital, Boston, MA, USA,Division of Pulmonary and Critical Care Medicine, Brigham and
Women’s Hospital, Boston, MA, USA,Clinical Discovery Unit, AstraZeneca, Cambridge, UK
| | - Tasha E. Fingerlin
- Center for Genes, Environment and Health, National Jewish Health,
Denver, CO, USA,Department of Biostatistics and Informatics, University of Colorado
Denver, Aurora, CO, USA
| | - David A. Schwartz
- Center for Genes, Environment and Health, National Jewish Health,
Denver, CO, USA,Department of Medicine, School of Medicine, University of Colorado
Denver, Aurora, CO, USA,Department of Immunology, School of Medicine, University of
Colorado Denver, Aurora, CO, USA
| | - Dirkje S. Postma
- University of Groningen, University Medical Center Groningen,
Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, the
Netherlands,University of Groningen, University Medical Center Groningen,
Department of Pulmonology, Groningen, the Netherlands
| | | | - Martin D. Tobin
- Genetic Epidemiology Group, Department of Health Sciences,
University of Leicester, Leicester, UK,National Institute for Health Research (NIHR) Leicester Respiratory
Biomedical Research Unit, Glenfield Hospital, Leicester, UK
| | - Edwin K. Silverman
- Channing Division of Network Medicine, Brigham and Women’s
Hospital, Boston, MA, USA,Division of Pulmonary and Critical Care Medicine, Brigham and
Women’s Hospital, Boston, MA, USA
| | - H. Marike Boezen
- University of Groningen, University Medical Center Groningen,
Department of Epidemiology, Groningen, the Netherlands,University of Groningen, University Medical Center Groningen,
Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, the
Netherlands
| | - Michael H. Cho
- Channing Division of Network Medicine, Brigham and Women’s
Hospital, Boston, MA, USA,Division of Pulmonary and Critical Care Medicine, Brigham and
Women’s Hospital, Boston, MA, USA,Corresponding author: Michael H. Cho
(), tel: 617-525-0897, fax:
888-487-1078
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Tellez CS, Juri DE, Do K, Picchi MA, Wang T, Liu G, Spira A, Belinsky SA. Abstract 958: MiR-196b is an epigenetically silenced tumor suppressor for lung cancer. Cancer Res 2016. [DOI: 10.1158/1538-7445.am2016-958] [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: 11/16/2022]
Abstract
Abstract
Silencing of microRNAs by promoter hypermethylation could play a significant role in lung cancer initiation and progression. A pre-malignancy model using carcinogen transformed human bronchial epithelial cells (HBECs) treated with the demethylating agent 5-aza-2’deoxycytidine followed by next-generation sequencing identified miR-196b and miR-34c-5p as being epigenetically regulated. Bisulfite sequencing confirmed silencing via dense promoter hypermethylation that was commonly replicated in malignant cell lines and primary tumors. Functional studies of miR-196b revealed that it was epigenetically silenced by chromatin modification and DNA methylation during transformation of HBECs and re-expression modulated genes involved in cell cycle regulation. Stable re-expression led to a cell cycle arrest mediated in part through transcriptional regulation of the FOS oncogene that was replicated in vivo by a profound reduction in growth of tumor xenografts. Luciferase assays demonstrated that forced expression of miR-196b inhibits FOS promoter and AP-1 reporter activity. A case-control study showed that methylation of miR-196b in sputum was strongly associated with lung cancer (OR = 4.7, p<0.001). These studies identify miR-196 as a tumor suppressor whose silencing early in lung carcinogenesis may provide a selective growth advantage to pre-malignant cells. Targeted delivery of this microRNA could benefit prevention and therapy for the management of lung cancer.
Citation Format: Carmen S. Tellez, Daniel E. Juri, Kieu Do, Maria A. Picchi, Teresa Wang, Gang Liu, Avrum Spira, Steven A. Belinsky. MiR-196b is an epigenetically silenced tumor suppressor for lung cancer. [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 958.
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Affiliation(s)
| | - Daniel E. Juri
- 1Lovelace Respiratory Research Institute, Albuquerque, NM
| | - Kieu Do
- 1Lovelace Respiratory Research Institute, Albuquerque, NM
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Filipczak PT, Thomas C, Chen W, Salzman A, McDonald JD, Lin Y, Belinsky SA. Abstract 3731: TSC deficiency unmasks a novel protective role of RIP1/RIP3 signaling against mitochondrial and oxidative stress-induced cell death. Cancer Res 2016. [DOI: 10.1158/1538-7445.am2016-3731] [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: 11/16/2022]
Abstract
Abstract
Tuberous sclerosis complex (TSC) is a genetic multi-organ disorder characterized by the development of neoplastic lesions in kidney, lung, brain, heart and skin. It is caused by an inactivating mutation in tumor suppressor genes coding the TSC1/TSC2 complex, resulting in hyperactivation of mTOR- and Raf/MEK/MAPK-dependent signaling that stimulates tumor cell proliferation and metastasis. Despite its oncogenic effect, cells with TSC deficiency were more sensitive to oxidative stress and dependent on mitochondrial metabolism, providing a rationale for a new therapeutic approach. The presented study shows that simultaneous inhibition of two major pathways regulating redox homeostasis using L-Buthionine-sulfoximine (BSO, glutathione synthesis inhibitor) and auranofin (thioredoxin reductase inhibitor) induces oxidative burst, mitochondrial damage and necrotic cell death in TSC2 deficient cells in a highly synergistic and cell context-specific manner. Furthermore, blocking RIP1/RIP3-dependent signaling using chemical inhibitors necrostatin-1 and necrosulfonamide (NSA), reported by others to protect from some cytotoxic stimuli, synergizes with BSO and auranofin in killing TSC2 deficient cells. Expression analysis demonstrated that RIP1 and RIP3 protein levels are elevated in cells with TSC2 deficiency, and their inactivation enhances mitochondrial dysfunction. Finally, supplementation with the mitochondrial metabolite alpha-ketoglutarate, whose synthesis is regulated by RIP1/RIP3, rescues cells from the sensitizing effect of necrostatin-1 and NSA. Together, this study identifies a novel TSC context-dependent role of RIP1/RIP3 signaling in regulating mitochondrial and oxidative homeostasis, and substantiates glutathione, thioredoxin and RIP1/RIP3 pathways targeting as a promising therapeutic approach against TSC-associated tumors.
Citation Format: Piotr T. Filipczak, Cindy Thomas, Wenshu Chen, Andrew Salzman, Jacob D. McDonald, Yong Lin, Steven A. Belinsky. TSC deficiency unmasks a novel protective role of RIP1/RIP3 signaling against mitochondrial and oxidative stress-induced cell death. [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 3731.
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Affiliation(s)
| | - Cindy Thomas
- 1Lovelace Respiratory Research Institute, Albuquerque, NM
| | - Wenshu Chen
- 1Lovelace Respiratory Research Institute, Albuquerque, NM
| | | | | | - Yong Lin
- 1Lovelace Respiratory Research Institute, Albuquerque, NM
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Tellez CS, Juri DE, Do K, Picchi MA, Wang T, Liu G, Spira A, Belinsky SA. miR-196b Is Epigenetically Silenced during the Premalignant Stage of Lung Carcinogenesis. Cancer Res 2016; 76:4741-51. [PMID: 27302168 DOI: 10.1158/0008-5472.can-15-3367] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 05/16/2016] [Indexed: 02/06/2023]
Abstract
miRNA silencing by promoter hypermethylation may represent a mechanism by which lung cancer develops and progresses, but the miRNAs involved during malignant transformation are unknown. We previously established a model of premalignant lung cancer wherein we treated human bronchial epithelial cells (HBEC) with low doses of tobacco carcinogens. Here, we demonstrate that next-generation sequencing of carcinogen-transformed HBECs treated with the demethylating agent 5-aza-2'deoxycytidine revealed miR-196b and miR-34c-5p to be epigenetic targets. Bisulfite sequencing confirmed dense promoter hypermethylation indicative of silencing in multiple malignant cell lines and primary tumors. Chromatin immunoprecipitation studies further demonstrated an enrichment in repressive histone marks on the miR-196b promoter during HBEC transformation. Restoration of miR-196b expression by transfecting transformed HBECs with specific mimics led to cell-cycle arrest mediated in part through transcriptional regulation of the FOS oncogene, and miR-196b reexpression also significantly reduced the growth of tumor xenografts. Luciferase assays demonstrated that forced expression of miR-196b inhibited the FOS promoter and AP-1 reporter activity. Finally, a case-control study revealed that methylation of miR-196b in sputum was strongly associated with lung cancer (OR = 4.7, P < 0.001). Collectively, these studies highlight miR-196b as a tumor suppressor whose silencing early in lung carcinogenesis may provide a selective growth advantage to premalignant cells. Targeted delivery of miR-196b could therefore serve as a preventive or therapeutic strategy for the management of lung cancer. Cancer Res; 76(16); 4741-51. ©2016 AACR.
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Affiliation(s)
- Carmen S Tellez
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico.
| | - Daniel E Juri
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Kieu Do
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Maria A Picchi
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Teresa Wang
- Department of Medicine, Boston University, Boston, Massachusetts
| | - Gang Liu
- Department of Medicine, Boston University, Boston, Massachusetts
| | - Avrum Spira
- Department of Medicine, Boston University, Boston, Massachusetts
| | - Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico.
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Leng S, Weissfeld JL, Picchi MA, Styn MA, Claus ED, Clark VP, Wu G, Thomas CL, Gilliland FD, Yuan J, Siegfried JM, Belinsky SA. A prospective and retrospective analysis of smoking behavior changes in ever smokers with high risk for lung cancer from New Mexico and Pennsylvania. Int J Mol Epidemiol Genet 2016; 7:95-104. [PMID: 27335628 PMCID: PMC4913225] [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] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 05/01/2016] [Indexed: 06/06/2023]
Abstract
Cigarette smoking is the leading preventable cause of death worldwide. The aim of this study is to conduct a prospective and retrospective analysis of smoking behavior changes in the Lovelace Smokers Cohort (LSC) and the Pittsburgh Lung Screening Study cohort (PLuSS). Area under the curve (AUC) for risk models predicting relapse based on demographic, smoking, and relevant clinical variables was 0.93 and 0.79 in LSC and PLuSS, respectively. The models for making a quit attempt had limited prediction ability in both cohorts (AUC≤0.62). We identified an ethnic disparity in adverse smoking behavior change that Hispanic smokers were less likely to make a quit attempt and were more likely to relapse after a quit attempt compared to non-Hispanic Whites. SNPs at 15q25 and 11p14 loci were associated with risk for smoking relapse in the LSC. Rs6495308 at 15q25 has a large difference in minor allele frequency between non-Hispanic Whites and Hispanics (0.46 versus 0.23, P<0.0001) and was associated with risk for ever relapse at same magnitude between the two ethnic groups (OR=1.36, 95% CI=1.10 to 1.67 versus 1.59, 95% CI=1.00 to 2.53, P=0.81). In summary, the risk prediction model established in LSC and PLuSS provided an excellent to outstanding distinguishing for abstainers who will or will not relapse. The ethnic disparity in adverse smoking behavior between Hispanics and non-Hispanic Whites may be at least partially explained by the sequence variants at 15q25 locus that contains multiple nicotine acetylcholine receptors.
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Affiliation(s)
- Shuguang Leng
- Lung Cancer Program, Lovelace Respiratory Research InstituteAlbuquerque, NM
| | - Joel L Weissfeld
- Department of Epidemiology, Graduate School of Public Health, University of PittsburghPittsburgh, PA
| | - Maria A Picchi
- Lung Cancer Program, Lovelace Respiratory Research InstituteAlbuquerque, NM
| | - Mindi A Styn
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh School of MedicinePittsburgh, PA
| | - Eric D Claus
- Mind Research Network and Lovelace Biomedical and Environmental Research InstituteAlbuquerque, NM
| | - Vincent P Clark
- Mind Research Network and Lovelace Biomedical and Environmental Research InstituteAlbuquerque, NM
| | - Guodong Wu
- Lung Cancer Program, Lovelace Respiratory Research InstituteAlbuquerque, NM
| | - Cynthia L Thomas
- Lung Cancer Program, Lovelace Respiratory Research InstituteAlbuquerque, NM
| | - Frank D Gilliland
- Department of Preventive Medicine, Keck School of Medicine, University of Southern CaliforniaLos Angeles, CA
| | - Jianmin Yuan
- Department of Epidemiology, Graduate School of Public Health, University of PittsburghPittsburgh, PA
- Division of Cancer Control and Population Sciences, University of Pittsburgh Cancer InstitutePittsburgh, PA
| | - Jill M Siegfried
- Department of Pharmacology & Chemical Biology, Hillman Cancer Center of The University of Pittsburgh Medical CenterPittsburgh, PA
- Department of Pharmacology, University of MinnesotaMinneapolis, MN
| | - Steven A Belinsky
- Lung Cancer Program, Lovelace Respiratory Research InstituteAlbuquerque, NM
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Leng S, Thomas CL, Snider AM, Picchi MA, Chen W, Willis DG, Carr TG, Krzeminski J, Desai D, Shantu A, Lin Y, Jacobson MR, Belinsky SA. Radon Exposure, IL-6 Promoter Variants, and Lung Squamous Cell Carcinoma in Former Uranium Miners. Environ Health Perspect 2016; 124:445-451. [PMID: 26372664 PMCID: PMC4829998 DOI: 10.1289/ehp.1409437] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 09/11/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND High radon exposure is a risk factor for squamous cell carcinoma, a major lung cancer histology observed in former uranium miners. Radon exposure can cause oxidative stress, leading to pulmonary inflammation. Interleukin-6 (IL-6) is a pro-carcinogenic inflammatory cytokine that plays a pivotal role in lung cancer development. OBJECTIVES We assessed whether single nucleotide polymorphisms (SNPs) in the IL6 promoter are associated with lung cancer in former uranium miners with high occupational exposure to radon gas. METHODS Genetic associations were assessed in a case-control study of former uranium miners (242 cases and 336 controls). A replication study was performed using data from the Gene Environment Association Studies (GENEVA) Genome Wide Association Study (GWAS) of Lung Cancer and Smoking. Functional relevance of the SNPs was characterized using in vitro approaches. RESULTS We found that rs1800797 was associated with squamous cell carcinoma in miners and with a shorter time between the midpoint of the period of substantial exposure and diagnosis among the cases. Furthermore, rs1800797 was also associated with lung cancer among never smokers in the GENEVA dataset. Functional studies identified that the risk allele was associated with increased basal IL-6 mRNA level and greater promoter activity. Furthermore, fibroblasts with the risk allele showed greater induction of IL-6 secretion by hydrogen peroxide or benzo[a]pyrene diolepoxide treatments. CONCLUSIONS An IL6 promoter variant was associated with lung cancer in uranium miners and never smokers in two external study populations. The associations are strongly supported by the functional relevance that the IL6 promoter SNP affects basal expression and carcinogen-induced IL-6 secretion. CITATION Leng S, Thomas CL, Snider AM, Picchi MA, Chen W, Willis DG, Carr TG, Krzeminski J, Desai D, Shantu A, Lin Y, Jacobson MR, Belinsky SA. 2016. Radon exposure, IL-6 promoter variants, and lung squamous cell carcinoma in former uranium miners. Environ Health Perspect 124:445-451; http://dx.doi.org/10.1289/ehp.1409437.
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Affiliation(s)
- Shuguang Leng
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico, USA
| | - Cynthia L. Thomas
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico, USA
| | - Amanda M. Snider
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico, USA
| | - Maria A. Picchi
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico, USA
| | - Wenshu Chen
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico, USA
| | - Derall G. Willis
- Saccomanno Research Institute, St. Mary’s Medical Center, Grand Junction, Colorado, USA
| | - Teara G. Carr
- Saccomanno Research Institute, St. Mary’s Medical Center, Grand Junction, Colorado, USA
| | - Jacek Krzeminski
- Department of Pharmacology, Penn State College of Medicine, Hershey, Pennsylvania, USA
| | - Dhimant Desai
- Department of Pharmacology, Penn State College of Medicine, Hershey, Pennsylvania, USA
| | - Amin Shantu
- Department of Pharmacology, Penn State College of Medicine, Hershey, Pennsylvania, USA
| | - Yong Lin
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico, USA
| | - Marty R. Jacobson
- Saccomanno Research Institute, St. Mary’s Medical Center, Grand Junction, Colorado, USA
| | - Steven A. Belinsky
- Lung Cancer Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico, USA
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Rybicki BA, Rundle A, Kryvenko ON, Mitrache N, Do KC, Jankowski M, Chitale DA, Trudeau S, Belinsky SA, Tang D. Methylation in benign prostate and risk of disease progression in men subsequently diagnosed with prostate cancer. Int J Cancer 2016; 138:2884-93. [PMID: 26860439 DOI: 10.1002/ijc.30038] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 10/21/2015] [Accepted: 01/25/2016] [Indexed: 12/31/2022]
Abstract
In DNA from prostate tumors, methylation patterns in gene promoter regions can be a biomarker for disease progression. It remains unclear whether methylation patterns in benign prostate tissue--prior to malignant transformation--may provide similar prognostic information. To determine whether early methylation events predict prostate cancer outcomes, we evaluated histologically benign prostate specimens from 353 men who eventually developed prostate cancer and received "definitive" treatment [radical prostatectomy (58%) or radiation therapy (42%)]. Cases were drawn from a large hospital-based cohort of men with benign prostate biopsy specimens collected between 1990 and 2002. Risk of disease progression associated with methylation was estimated using time-to-event analyses. Average follow-up was over 5 years; biochemical recurrence (BCR) occurred in 91 cases (26%). In White men, methylation of the APC gene was associated with increased risk of BCR, even after adjusting for standard clinical risk factors for prostate cancer progression (adjusted hazard ratio (aHR) = 2.26; 95%CI 1.23-4.16). APC methylation was most strongly associated with a significant increased risk of BCR in White men with low prostate specific antigen at cohort entry (HR = 3.66; 95%CI 1.51-8.85). In additional stratified analyses, we found that methylation of the RARB gene significantly increased risk of BCR in African American cases who demonstrated methylation of at least one of the other four genes under study (HR = 3.80; 95%CI 1.07-13.53). These findings may have implications in the early identification of aggressive prostate cancer as well as reducing unnecessary medical procedures and emotional distress for men who present with markers of indolent disease.
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Affiliation(s)
- Benjamin A Rybicki
- Department of Public Health Sciences, Henry Ford Hospital, Detroit, MI.,Josephine Ford Cancer Institute, Henry Ford Hospital, Detroit, MI
| | - Andrew Rundle
- Department of Epidemiology, Columbia University, New York, NY
| | - Oleksandr N Kryvenko
- Department of Pathology and Urology, University of Miami Miller School of Medicine, Miami, FL
| | - Nicoleta Mitrache
- Department of Public Health Sciences, Henry Ford Hospital, Detroit, MI
| | - Kieu C Do
- Lung Cancer Division, Lovelace Respiratory Research Institute, Albuquerque, NM
| | | | - Dhananjay A Chitale
- Josephine Ford Cancer Institute, Henry Ford Hospital, Detroit, MI.,Department of Surgical Pathology, Henry Ford Hospital, Detroit, MI
| | - Sheri Trudeau
- Department of Public Health Sciences, Henry Ford Hospital, Detroit, MI
| | - Steven A Belinsky
- Lung Cancer Division, Lovelace Respiratory Research Institute, Albuquerque, NM
| | - Deliang Tang
- Department of Environmental Health Sciences, Columbia University, New York, NY
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