151
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Kim IA, Lee JS, Kim HJ, Kim WS, Lee KY. Cumulative smoking dose affects the clinical outcomes of EGFR-mutated lung adenocarcinoma patients treated with EGFR-TKIs: a retrospective study. BMC Cancer 2018; 18:768. [PMID: 30055587 PMCID: PMC6064083 DOI: 10.1186/s12885-018-4691-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 07/24/2018] [Indexed: 02/04/2023] Open
Abstract
Background Although lung adenocarcinoma with activating epidermal growth factor receptor (EGFR) mutations is common in never smokers, one-third of the patients are ever-smokers. We aimed to investigate the effect of cumulative smoking dose(CSD) on clinical outcomes, including progression-free survival (PFS) and overall survival (OS), in patients with EGFR-mutated lung adenocarcinoma receiving EGFR-tyrosine kinase inhibitors (TKIs). Methods We retrospectively analyzed 142 patients with EGFR-mutation positive advanced or recurrent lung adenocarcinoma who were administered gefitinib, erlotinib, afatinib, and osimertinib. These patients were classified based on their CSD as never smokers, light smokers (≤10 pack-years [PYs]), moderate smokers (11–30 PYs), and heavy smokers (> 30 PYs). PFS and OS were analyzed according to smoking subgroups via Kaplan-Meier curves. Results Among the 142 patients, 91 (64.1%), 12 (8.5%), 22 (15.5%), and 17 (12%) were never, light, moderate, and heavy smokers, respectively. CSD was inversely associated with median PFS in a statistically significant dose-dependent manner (11.8 months (mo), 11.0 mo, 7.4 mo, and 3.9 mo; p < 0.001). Statistically significant negative association was observed between CSD and median OS (33.6 mo, 26.3 mo, 20 mo, and 8.9 mo; p < 0.001). In the multivariate analysis adjusted for age, sex, performance status, stage, and timing of EGFR-TKIs, CSD was an independent predictive factor for disease progression (hazard ratio [HR], 4.00; 95% confidence interval [CI], 1.95–8.23; p = 0.012) and OS (HR, 3.9; 95% CI, 1.84–8.28; p < 0.001). Conclusion CSD is an important predictive and prognostic factor in patients with EGFR-mutated lung adenocarcinoma, and associated smoking-related gene signatures might affect the outcomes. Electronic supplementary material The online version of this article (10.1186/s12885-018-4691-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- In Ae Kim
- Lung Cancer Center, Konkuk University Medical Center, 120-1 Hwayang-dong, Gwangjin-Gu, Seoul, 05030, Republic of Korea.,Department of Pulmonary Medicine, Konkuk University School of Medicine, 120-1 Hwayang-dong, Gwangjin-Gu, Seoul, 05030, Republic of Korea
| | - Jong Sik Lee
- Lung Cancer Center, Konkuk University Medical Center, 120-1 Hwayang-dong, Gwangjin-Gu, Seoul, 05030, Republic of Korea
| | - Hee Joung Kim
- Lung Cancer Center, Konkuk University Medical Center, 120-1 Hwayang-dong, Gwangjin-Gu, Seoul, 05030, Republic of Korea.,Department of Pulmonary Medicine, Konkuk University School of Medicine, 120-1 Hwayang-dong, Gwangjin-Gu, Seoul, 05030, Republic of Korea
| | - Wan Seop Kim
- Lung Cancer Center, Konkuk University Medical Center, 120-1 Hwayang-dong, Gwangjin-Gu, Seoul, 05030, Republic of Korea.,Department of Pathology, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Kye Young Lee
- Lung Cancer Center, Konkuk University Medical Center, 120-1 Hwayang-dong, Gwangjin-Gu, Seoul, 05030, Republic of Korea. .,Department of Pulmonary Medicine, Konkuk University School of Medicine, 120-1 Hwayang-dong, Gwangjin-Gu, Seoul, 05030, Republic of Korea.
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152
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Feng W, Guo X, Huang H, Xu C, Li Y, Guo S, Zhao Z, Li Q, Lu D, Jin L, Wang J, Jiang G, Wu J. Polymorphism rs3819102 in thymidylate synthase and environmental factors: effects on lung cancer in Chinese population. Curr Probl Cancer 2018; 43:66-74. [PMID: 30180988 DOI: 10.1016/j.currproblcancer.2018.07.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 07/16/2018] [Indexed: 12/18/2022]
Abstract
PURPOSE Lung cancer is the leading cause of cancer death worldwide, and the predominant risk factor for its development is smoking. Thymidylate synthase (TYMS) is a key enzyme in DNA synthesis that catalyzes the conversion of deoxyuridine monophosphate to dTMP. Rs931794, a single nucleotide polymorphism located in the TYMS gene, was suggested to be associated with cancer risk. METHODS To analyze the interaction between rs3819102 and environmental factors on the risk of lung cancer in a Chinese population, single nucleotide polymorphismscan was used to genotype this polymorphism in 974 lung cancer cases and 1005 control subjects. RESULTS The frequencies of TT, CT, and CC genotypes of TYMS rs3819102 were 61.8%, 32.9%, and 5.3% in controls, and 53.8%, 38.4%, and 7.8% in cases, respectively. Compared with the TT genotype, the CT (odds ratio [OR], 1.380; 95% confidence interval [CI], 1.131-1.683), and CC (OR, 1.786; 95% CI, 1.213-2.644) genotypes were associated with an increased risk of lung cancer after adjustment for age, gender, smoking status, and family history. The C allele of rs3819102 is the risk allele for lung carcinogenesis in a dominant model (OR, 1.435; 95% CI, 1.188-1.735). In a stratified analysis, the risk effects of both the CT and CC genotypes of rs3819102 were more evident in subgroups of smokers and people without a family history of cancer. CONCLUSION The rs3819102 polymorphism in TYMS might increase susceptibility to environmental factors and contribute to the risk of lung cancer. The C allele is a risk allele in lung carcinogenesis.
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Affiliation(s)
- Wei Feng
- College of Basic Medical Sciences, Navy Military Medical University, Shanghai, China
| | - Xianling Guo
- Department of Medical Oncology, 10th People's Hospital, Tongji University, Shanghai, China
| | - Haidong Huang
- Department of Respiratory and Critical Care Medicine, Navy Military Medical University Affiliated Changhai Hospital, Shanghai, China
| | - Chang Xu
- College of Basic Medical Sciences, Nanjing Medical University, Nanjing, China
| | - Yutao Li
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Shicheng Guo
- Ministry of Education Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China; Center for Precision Medicine Research, Marshfield Clinic Research Institute, Marshfield, WI, USA
| | - Zhenghong Zhao
- Ministry of Education Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China
| | - Qiang Li
- Department of Respiratory Medicine, Shanghai Jiaotong University Affiliated First People's Hospital, Shanghai, China
| | - Daru Lu
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Li Jin
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Jiucun Wang
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China; Fudan-Taizhou Institute of Health Sciences, Taizhou, Jiangsu, China
| | - Gengxi Jiang
- Department of Thoracic Surgery, Navy Military Medical University Affiliated Changhai Hospital, Shanghai, China.
| | - Junjie Wu
- Department of Respiratory and Critical Care Medicine, Navy Military Medical University Affiliated Changhai Hospital, Shanghai, China; State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.
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153
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Golemis EA, Scheet P, Beck TN, Scolnick EM, Hunter DJ, Hawk E, Hopkins N. Molecular mechanisms of the preventable causes of cancer in the United States. Genes Dev 2018; 32:868-902. [PMID: 29945886 PMCID: PMC6075032 DOI: 10.1101/gad.314849.118] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Annually, there are 1.6 million new cases of cancer and nearly 600,000 cancer deaths in the United States alone. The public health burden associated with these numbers has motivated enormous research efforts into understanding the root causes of cancer. These efforts have led to the recognition that between 40% and 45% of cancers are associated with preventable risk factors and, importantly, have identified specific molecular mechanisms by which these exposures modify human physiology to induce or promote cancer. The increasingly refined knowledge of these mechanisms, which we summarize here, emphasizes the need for greater efforts toward primary cancer prevention through mitigation of modifiable risk factors. It also suggests exploitable avenues for improved secondary prevention (which includes the development of therapeutics designed for cancer interception and enhanced techniques for noninvasive screening and early detection) based on detailed knowledge of early neoplastic pathobiology. Such efforts would complement the current emphasis on the development of therapeutic approaches to treat established cancers and are likely to result in far greater gains in reducing morbidity and mortality.
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Affiliation(s)
- Erica A Golemis
- Program in Molecular Therapeutics, Fox Chase Cancer Center, Philadelphia, Pennsylvania 19111, USA
| | - Paul Scheet
- Department of Epidemiology, University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030, USA
| | - Tim N Beck
- Program in Molecular Therapeutics, Fox Chase Cancer Center, Philadelphia, Pennsylvania 19111, USA
- Molecular and Cell Biology and Genetics Program, Drexel University College of Medicine, Philadelphia, Pennsylvania 19129, USA
| | - Eward M Scolnick
- Eli and Edythe L. Broad Institute of the Massachusetts Institute of Technology and Harvard University, Cambridge, Massachusetts 02142, USA
| | - David J Hunter
- Nuffield Department of Population Health, University of Oxford, Medical Sciences Division, Oxford OX3 7LF, United Kingdom
| | - Ernest Hawk
- Division of Cancer Prevention and Population Sciences, University of Texas M.D. Anderson Cancer Center, Houston Texas 77030, USA
| | - Nancy Hopkins
- Koch Institute for Integrative Cancer Research, Biology Department, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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154
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Zhao G, Wang Z, Huang Y, Ye L, Yang K, Huang Q, Chen X, Li G, Chen Y, Wang J, Zhou Y. Effects of Benzoapyrene on migration and invasion of lung cancer cells functioning by TNF-α. J Cell Biochem 2018; 119:6492-6500. [PMID: 29345337 DOI: 10.1002/jcb.26683] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 01/17/2018] [Indexed: 01/29/2023]
Abstract
In this study, we attempted to find out the underlying mechanism of Benzoapyrene and metastasis of lung cancer cells. We also did experiments to testify the connection between BaP and its potential target, TNF-α. Cell median lethal dose (IC50 ) of both cells was measured by crystal violet method. Quantitative real-time reverse transcription PCR (qRT-PCR) and Western blot were employed to detect the expression of TNF-α. Wound healing assay and transwell assay were utilized to testify the impacts of BaP and TNF-α on the metastasis of lung cancer cells. Cell death rate was elevated with the increase of BaP concentration. BaP increased the number of metastatic cells of lung cancer. The expressions of TNF-α pathway-associated protein (TNF-α, NF-kB [P65], Caspase3, and Caspase8) were enhanced by overexpressed BaP. TNF-α shRNA suppressed the positive effects of BaP on migration and invasion of lung cancer cells. Our study validated the positive effects of BaP on the metastasis of lung cancer cells. We also revealed the instrumental role of TNF-α in helping the development of lung cancer cells induced by BaP.
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Affiliation(s)
- Guangqiang Zhao
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Zhengxi Wang
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yunchao Huang
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Lianhua Ye
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Kaiyun Yang
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Qiubo Huang
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Xiaobo Chen
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Guangjian Li
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Ying Chen
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Jinhui Wang
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yongchun Zhou
- The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.,International Joint Laboratory on High Altitude Regional Cancer, Kunming, Yunnan, China
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155
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Nishinarita N, Igawa S, Kasajima M, Kusuhara S, Harada S, Okuma Y, Sugita K, Ozawa T, Fukui T, Mitsufuji H, Yokoba M, Katagiri M, Kubota M, Sasaki J, Naoki K. Smoking History as a Predictor of Epidermal Growth Factor Receptor Tyrosine Kinase Inhibitors in Patients with Non-Small Cell Lung Cancer Harboring EGFR Mutations. Oncology 2018; 95:109-115. [DOI: 10.1159/000488594] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 03/19/2018] [Indexed: 11/19/2022]
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156
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Tu CY, Cheng FJ, Chen CM, Wang SL, Hsiao YC, Chen CH, Hsia TC, He YH, Wang BW, Hsieh IS, Yeh YL, Tang CH, Chen YJ, Huang WC. Cigarette smoke enhances oncogene addiction to c-MET and desensitizes EGFR-expressing non-small cell lung cancer to EGFR TKIs. Mol Oncol 2018; 12:705-723. [PMID: 29570930 PMCID: PMC5928373 DOI: 10.1002/1878-0261.12193] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 02/13/2018] [Accepted: 02/20/2018] [Indexed: 12/23/2022] Open
Abstract
Cigarette smoking is one of the leading risks for lung cancer and is associated with the insensitivity of non‐small cell lung cancer (NSCLC) to epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs). However, it remains undetermined whether and how cigarette smoke affects the therapeutic efficacy of EGFR TKIs. In this study, our data showed that chronic exposure to cigarette smoke extract (CSE) or tobacco smoke‐derived carcinogen benzo[α]pyrene, B[α]P, but not nicotine‐derived nitrosamine ketone (NNK), reduced the sensitivity of wild‐type EGFR‐expressing NSCLC cells to EGFR TKIs. Treatment with TKIs almost abolished EGFR tyrosine kinase activity but did not show an inhibitory effect on downstream Akt and ERK pathways in B[α]P‐treated NSCLC cells. CSE and B[α]P transcriptionally upregulate c‐MET and activate its downstream Akt pathway, which is not inhibited by EGFR TKIs. Silencing of c‐MET reduces B[α]P‐induced Akt activation. The CSE‐treated NSCLC cells are sensitive to the c‐MET inhibitor crizotinib. These findings suggest that cigarette smoke augments oncogene addiction to c‐MET in NSCLC cells and that MET inhibitors may show clinical benefits for lung cancer patients with a smoking history.
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Affiliation(s)
- Chih-Yen Tu
- Department of Life Science, the iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung, Taiwan.,Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan.,School of Medicine, China Medical University, Taichung, Taiwan
| | - Fang-Ju Cheng
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
| | - Chuan-Mu Chen
- Department of Life Science, the iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
| | - Shu-Ling Wang
- Graduate Institute of Cancer Biology, China Medical University, Taichung, Taiwan
| | - Yu-Chun Hsiao
- The Ph.D. Program for Cancer Biology and Drug Discovery, China Medical University and Academia Sinica, Taichung, Taiwan
| | - Chia-Hung Chen
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan.,Department of Respiratory Therapy, China Medical University, Taichung, Taiwan
| | - Te-Chun Hsia
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan.,Department of Respiratory Therapy, China Medical University, Taichung, Taiwan.,Hyperbaric Oxygen Therapy Center, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Yu-Hao He
- The Ph.D. Program for Cancer Biology and Drug Discovery, China Medical University and Academia Sinica, Taichung, Taiwan
| | - Bo-Wei Wang
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
| | - I-Shan Hsieh
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
| | - Yi-Lun Yeh
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
| | - Chih-Hsin Tang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
| | - Yun-Ju Chen
- Department of Medical Research, E-DA Hospital, Kaohsiung, Taiwan.,Department of Biological Science & Technology, I-Shou University, Kaohsiung, Taiwan.,School of Medicine, I-Shou University, Kaohsiung, Taiwan
| | - Wei-Chien Huang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,Graduate Institute of Cancer Biology, China Medical University, Taichung, Taiwan.,The Ph.D. Program for Cancer Biology and Drug Discovery, China Medical University and Academia Sinica, Taichung, Taiwan.,Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan.,Center for Molecular Medicine, China Medical University and Hospital, Taichung, Taiwan.,Department of Biotechnology, College of Health Science, Asia University, Taichung, Taiwan.,Research Center for New Drug Development, China Medical University, Taichung, Taiwan
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157
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Balansky R, Ganchev G, Iltcheva M, Dimitrova E, Micale RT, La Maestra S, De Flora S. Carcinogenic response and other histopathological alterations in mice exposed to cigarette smoke for varying time periods after birth. Carcinogenesis 2018; 39:580-587. [PMID: 29370344 DOI: 10.1093/carcin/bgy013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 01/15/2018] [Indexed: 01/01/2023] Open
Abstract
In spite of the outstanding role of tobacco smoking in human carcinogenesis, it is difficult to reproduce its effects in experimental animals. Based on the knowledge that a variety of mechanisms account for a higher susceptibility to carcinogens early in life, we have developed a murine model in which mainstream cigarette smoke becomes convincingly carcinogenic. The standard model involves exposure to smoke for 4 months, starting after birth, followed by an additional 3-4 months in filtered air. We evaluated herein the time- and dose-dependent response, at 7.5 months of life, of Swiss H mice that had been exposed to smoke for either 1, 2 or 4 months after birth. A one-month exposure, corresponding to a period of intense alveolarization, was sufficient to induce most inflammatory, degenerative and preneoplastic pulmonary lesions, including emphysema and alveolar epithelial hyperplasia, blood vessel proliferation and hemangiomas, reflecting an early proangiogenic role of smoking, and microadenomas bearing ki-67-positive proliferating cells as well as urinary bladder epithelial hyperplasia. Two months of exposure were needed to induce pulmonary adenomas and urinary bladder papillomas in males only, which highlights a protective role of estrogens in urinary bladder carcinogenesis. Four months, which in humans would correspond to the postnatal period, puberty, adolescence and early adulthood, were needed to induce other lesions, including tubular epithelial hyperplasia of kidney, bronchial epithelial hyperplasia and especially pulmonary malignant tumors. These findings highlight the concept that preneoplastic and neoplastic lesions occurring in adulthood can be induced by exposure to smoke early in life.
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Affiliation(s)
| | | | | | | | - Rosanna T Micale
- Department of Health Sciences, University of Genoa, Genoa, Italy
- National Center of Oncology, Sofia, Bulgaria
| | - Sebastiano La Maestra
- Department of Health Sciences, University of Genoa, Genoa, Italy
- National Center of Oncology, Sofia, Bulgaria
| | - Silvio De Flora
- Department of Health Sciences, University of Genoa, Genoa, Italy
- National Center of Oncology, Sofia, Bulgaria
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158
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Challenges and future direction of molecular research in air pollution-related lung cancers. Lung Cancer 2018; 118:69-75. [DOI: 10.1016/j.lungcan.2018.01.016] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 12/29/2017] [Accepted: 01/21/2018] [Indexed: 02/07/2023]
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159
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Murphy SE, vonWeymarn LB, Parenteau M, Stepanov I, Tiirikainen M, Le Marchand L, Park SL. Influence of UGT2B10 Genotype on Urinary Excretion of 4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanol- N-glucuronide by African American Smokers. Chem Res Toxicol 2018; 31:168-175. [PMID: 29460622 PMCID: PMC6058729 DOI: 10.1021/acs.chemrestox.7b00264] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
At similar smoking levels, African American's lung cancer risk is as much as twice that of whites. We hypothesized that racial/ethnic differences in UDP-glucuronosyltransferase (UGT)-catalyzed glucuronidation of 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol (NNAL), a detoxication pathway for the tobacco-specific lung carcinogen 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) may contribute to this variable risk. UGT2B10 catalyzes NNAL- N-glucuronidation, and a UGT2B10 splice variant is common among African Americans. Smokers from two independent studies were genotyped for this variant (rs116294140) and an Asp67Tyr variant (rs61750900), and urinary NNAL and NNAL-glucuronide concentrations were quantified. In the first, no significant differences in NNAL- N-glucuronidation between African Americans ( n = 257) and whites ( n = 354) or between homozygous carriers of UGT2B10 variants (genetic score 2) and noncarriers (score 0) were detected. However, total NNAL glucuronidation by score 2 compared to score 0 smokers was lower (68.9 vs 71.2%, p < 0.0001). For NNAL- N-glucuronide to be more precisely quantified in a second study, a sensitive high-resolution LC-MS/MS-based method, which separated NNAL, NNAL- O-glucuronide, and NNAL- N-glucuronide prior to analysis, was developed. In this study, the excretion of total NNAL (free plus glucuronides) by African American ( n = 52) and white ( n = 54) smokers was not different; however, total NNAL glucuronidation by African Americans (64.0%) was slightly less than by whites (68.3%, p = 0.05). The mean NNAL- N-glucuronidation by African Americans was much lower than for whites (14 vs 24.9%, p < 0.00001), but the NNAL- O-glucuronidation was greater (50.0 vs 43.3%, p = 0.013). UGT2B10 genotype influenced NNAL- N-glucuronidation; the geometric mean percentage N-glucuronidation was 22.5% for smokers with genetic score 0 ( n = 57) and 11.2% for score 2 ( n = 11). In summary, the high prevalence of a UGT2B10 splice variant among African Americans results in lower NNAL- N-glucuronidation but only a small decrease in total NNAL glucuronidation. Therefore, despite the significant contribution of UGT2B10 to NNAL- N-glucuronidation, the UGT2B10 genotype does not play a large role in NNAL detoxication. Any decrease in N-glucuronidation was accompanied by a parallel increase in O-glucuronidation.
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Affiliation(s)
- Sharon E. Murphy
- Department of Biochemistry Molecular Biology and Biophysics and Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455 USA
| | - Linda B. vonWeymarn
- Department of Biochemistry Molecular Biology and Biophysics and Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455 USA
| | - Marc Parenteau
- Department of Biochemistry Molecular Biology and Biophysics and Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455 USA
| | - Irina Stepanov
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455 USA
| | - Maarit Tiirikainen
- Epidemiology Program, University of Hawaii Cancer Center, Honolulu, HI, 96813 USA
| | - Loic Le Marchand
- Epidemiology Program, University of Hawaii Cancer Center, Honolulu, HI, 96813 USA
| | - Sungshim L. Park
- Department of Preventive Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90089 USA
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160
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Izzotti A, Longobardi M, La Maestra S, Micale RT, Pulliero A, Camoirano A, Geretto M, D'Agostini F, Balansky R, Miller MS, Steele VE, De Flora S. Release of MicroRNAs into Body Fluids from Ten Organs of Mice Exposed to Cigarette Smoke. Theranostics 2018; 8:2147-2160. [PMID: 29721069 PMCID: PMC5928877 DOI: 10.7150/thno.22726] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 02/06/2018] [Indexed: 12/13/2022] Open
Abstract
Purpose: MicroRNAs are small non-coding RNAs that regulate gene expression, thereby playing a role in a variety of physiological and pathophysiological states. Exposure to cigarette smoke extensively downregulates microRNA expression in pulmonary cells of mice, rats, and humans. Cellular microRNAs are released into body fluids, but a poor parallelism was previously observed between lung microRNAs and circulating microRNAs. The purpose of the present study was to validate the application of this epigenetic biomarker by using less invasive collection procedures. Experimental design: Using microarray analyses, we measured 1135 microRNAs in 10 organs and 3 body fluids of mice that were either unexposed or exposed to mainstream cigarette smoke for up to 8 weeks. The results obtained with selected miRNAs were validated by qPCR. Results: The lung was the main target affected by smoke (190 dysregulated miRNAs), followed by skeletal muscle (180), liver (138), blood serum (109), kidney (96), spleen (89), stomach (36), heart (33), bronchoalveolar lavage fluid (32), urine (27), urinary bladder (12), colon (5), and brain (0). Skeletal muscle, kidney, and lung were the most important sources of smoke-altered microRNAs in blood serum, urine, and bronchoalveolar lavage fluid, respectively. Conclusions: microRNA expression analysis was able to identify target organs after just 8 weeks of exposure to smoke, well before the occurrence of any detectable histopathological alteration. The present translational study validates the use of body fluid microRNAs as biomarkers applicable to human biomonitoring for mechanistic studies, diagnostic purposes, preventive medicine, and therapeutic strategies.
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Affiliation(s)
- Alberto Izzotti
- Department of Health Sciences, University of Genoa, 16132 Genoa, Italy
- IRCCS Ospedale Policlinico San Martino, 16132 Genoa, Italy
| | | | | | - Rosanna T. Micale
- Department of Health Sciences, University of Genoa, 16132 Genoa, Italy
| | | | - Anna Camoirano
- Department of Health Sciences, University of Genoa, 16132 Genoa, Italy
| | - Marta Geretto
- Department of Health Sciences, University of Genoa, 16132 Genoa, Italy
| | | | - Roumen Balansky
- Department of Health Sciences, University of Genoa, 16132 Genoa, Italy
- National Center of Oncology, Sofia-1756, Bulgaria
| | - Mark Steven Miller
- Division of Cancer Prevention, National Cancer Institute, Rockville, MD 20850, USA
| | - Vernon E. Steele
- Division of Cancer Prevention, National Cancer Institute, Rockville, MD 20850, USA
| | - Silvio De Flora
- Department of Health Sciences, University of Genoa, 16132 Genoa, Italy
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161
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162
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Hang B, Wang Y, Huang Y, Wang P, Langley SA, Bi L, Sarker AH, Schick SF, Havel C, Jacob P, Benowitz N, Destaillats H, Tang X, Xia Y, Jen KY, Gundel LA, Mao JH, Snijders AM. Short-term early exposure to thirdhand cigarette smoke increases lung cancer incidence in mice. Clin Sci (Lond) 2018; 132:475-488. [PMID: 29440622 PMCID: PMC6365648 DOI: 10.1042/cs20171521] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 02/02/2018] [Accepted: 02/09/2018] [Indexed: 02/01/2023]
Abstract
Exposure to thirdhand smoke (THS) is a recently described health concern that arises in many indoor environments. However, the carcinogenic potential of THS, a critical consideration in risk assessment, remains untested. Here we investigated the effects of short-term early exposure to THS on lung carcinogenesis in A/J mice. Forty weeks after THS exposure from 4 to 7 weeks of age, the mice had increased incidence of lung adenocarcinoma, tumor size and, multiplicity, compared with controls. In vitro studies using cultured human lung cancer cells showed that THS exposure induced DNA double-strand breaks and increased cell proliferation and colony formation. RNA sequencing analysis revealed that THS exposure induced endoplasmic reticulum stress and activated p53 signaling. Activation of the p53 pathway was confirmed by an increase in its targets p21 and BAX. These data indicate that early exposure to THS is associated with increased lung cancer risk.
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Affiliation(s)
- Bo Hang
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A
| | - Yunshan Wang
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A
- International Biotechnology R&D Center, Shandong University School of Ocean, Weihai, Shandong 264209, China
| | - Yurong Huang
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A
| | - Pin Wang
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A
- Department of Gastroenterology, Nanjing Drum Tower Hospital, Nanjing University Medical School, Nanjing, Jiangsu 210008, China
| | - Sasha A Langley
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A
| | - Lei Bi
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A
| | - Altaf H Sarker
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A
| | - Suzaynn F Schick
- Department of Medicine, Division of Occupational and Environmental Medicine, University of California, San Francisco, Box 0843, San Francisco, CA 94143, U.S.A
| | - Christopher Havel
- Division of Clinical Pharmacology and Experimental Therapeutics, Department of Medicine University of California, San Francisco, Box 0843, San Francisco, CA 94143, U.S.A
| | - Peyton Jacob
- Division of Clinical Pharmacology and Experimental Therapeutics, Department of Medicine University of California, San Francisco, Box 0843, San Francisco, CA 94143, U.S.A
| | - Neal Benowitz
- Division of Clinical Pharmacology and Experimental Therapeutics, Medical Services, Department of Medicine, and Bioengineering & Therapeutic Sciences, University of California, San Francisco, Box 0843, San Francisco, CA 94143, U.S.A
| | - Hugo Destaillats
- Indoor Environment Group, Energy Technologies Area, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A
| | - Xiaochen Tang
- Indoor Environment Group, Energy Technologies Area, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A
| | - Yankai Xia
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, Nanjing 211166, China
| | - Kuang-Yu Jen
- Department of Pathology and Laboratory Medicine, University of California Davis Medical Center, Sacramento, CA 95817, U.S.A
| | - Lara A Gundel
- Indoor Environment Group, Energy Technologies Area, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A
| | - Jian-Hua Mao
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A.
- Berkeley Biomedical Data Science Center, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A
| | - Antoine M Snijders
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A.
- Berkeley Biomedical Data Science Center, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A
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163
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Wei MM, Zhou YC, Wen ZS, Zhou B, Huang YC, Wang GZ, Zhao XC, Pan HL, Qu LW, Zhang J, Zhang C, Cheng X, Zhou GB. Long non-coding RNA stabilizes the Y-box-binding protein 1 and regulates the epidermal growth factor receptor to promote lung carcinogenesis. Oncotarget 2018; 7:59556-59571. [PMID: 27322209 PMCID: PMC5312331 DOI: 10.18632/oncotarget.10006] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 05/29/2016] [Indexed: 01/11/2023] Open
Abstract
Indoor and outdoor air pollution has been classified as group I carcinogen in humans, but the underlying tumorigenesis remains unclear. Here, we screened for abnormal long noncoding RNAs (lncRNAs) in lung cancers from patients living in Xuanwei city which has the highest lung cancer incidence in China due to smoky coal combustion-generated air pollution. We reported that Xuanwei patients had much more dysregulated lncRNAs than patients from control regions where smoky coal was not used. The lncRNA CAR intergenic 10 (CAR10) was up-regulated in 39/62 (62.9%) of the Xuanwei patients, which was much higher than in patients from control regions (32/86, 37.2%; p=0.002). A multivariate regression analysis showed an association between CAR10 overexpression and air pollution, and a smoky coal combustion-generated carcinogen dibenz[a,h]anthracene up-regulated CAR10 by increasing transcription factor FoxF2 expression. CAR10 bound and stabilized transcription factor Y-box-binding protein 1 (YB-1), leading to up-regulation of the epidermal growth factor receptor (EGFR) and proliferation of lung cancer cells. Knockdown of CAR10 inhibited cell growth in vitro and tumor growth in vivo. These results demonstrate the role of lncRNAs in environmental lung carcinogenesis, and CAR10-YB-1 represents a potential therapeutic target.
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Affiliation(s)
- Ming-Ming Wei
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yong-Chun Zhou
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University (Yunnan Tumor Hospital), Kunming 650106, China
| | - Zhe-Sheng Wen
- Department of Thoracic Surgery, The Cancer Hospital, Sun Yat-Sen University, Guangzhou 510060, China
| | - Bo Zhou
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yun-Chao Huang
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University (Yunnan Tumor Hospital), Kunming 650106, China
| | - Gui-Zhen Wang
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Xin-Chun Zhao
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Hong-Li Pan
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Li-Wei Qu
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jian Zhang
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Chen Zhang
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Xin Cheng
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Guang-Biao Zhou
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
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164
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Kai K, Komukai S, Koga H, Yamaji K, Ide T, Kawaguchi A, Aishima S, Noshiro H. Correlation between smoking habit and surgical outcomes on viral-associated hepatocellular carcinomas. World J Gastroenterol 2018; 24:58-68. [PMID: 29358882 PMCID: PMC5757126 DOI: 10.3748/wjg.v24.i1.58] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 12/02/2017] [Accepted: 12/12/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the association between smoking habits and surgical outcomes in hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC) (B-HCC) and hepatitis C virus (HCV)-related HCC (C-HCC) and clarify the clinicopathological features associated with smoking status in B-HCC and C-HCC patients.
METHODS We retrospectively examined the cases of the 341 consecutive patients with viral-associated HCC (C-HCC, n = 273; B-HCC, n = 68) who underwent curative surgery for their primary lesion. We categorized smoking status at the time of surgery into never, ex- and current smoker. We analyzed the B-HCC and C-HCC groups’ clinicopathological features and surgical outcomes, i.e., disease-free survival (DFS), overall survival (OS), and disease-specific survival (DSS). Univariate and multivariate analyses were performed using a Cox proportional hazards regression model. We also performed subset analyses in both patient groups comparing the current smokers to the other patients.
RESULTS The multivariate analysis in the C-HCC group revealed that current-smoker status was significantly correlated with both OS (P = 0.0039) and DSS (P = 0.0416). In the B-HCC patients, no significant correlation was observed between current-smoker status and DFS, OS, or DSS in the univariate or multivariate analyses. The subset analyses comparing the current smokers to the other patients in both the C-HCC and B-HCC groups revealed that the current smokers developed HCC at significantly younger ages than the other patients irrespective of viral infection status.
CONCLUSION A smoking habit is significantly correlated with the overall and disease-specific survivals of patients with C-HCC. In contrast, the B-HCC patients showed a weak association between smoking status and surgical outcomes.
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Affiliation(s)
- Keita Kai
- Department of Pathology, Saga University Hospital, Saga 849-8501, Japan
| | - Sho Komukai
- Clinical Research Center, Saga University Hospital, Saga 849-8501, Japan
| | - Hiroki Koga
- Department of Surgery, Saga University Faculty of Medicine, Saga 849-8501, Japan
| | - Koutaro Yamaji
- Department of Surgery, Saga University Faculty of Medicine, Saga 849-8501, Japan
- Department of Pathology and Microbiology, Saga University Faculty of Medicine, Saga 849-8501, Japan
| | - Takao Ide
- Department of Surgery, Saga University Faculty of Medicine, Saga 849-8501, Japan
| | - Atsushi Kawaguchi
- Center for Comprehensive Community Medicine, Saga University Faculty of Medicine, Saga 849-8501, Japan
| | - Shinichi Aishima
- Department of Pathology, Saga University Hospital, Saga 849-8501, Japan
- Department of Pathology and Microbiology, Saga University Faculty of Medicine, Saga 849-8501, Japan
| | - Hirokazu Noshiro
- Department of Surgery, Saga University Faculty of Medicine, Saga 849-8501, Japan
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165
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Villalta PW, Hochalter JB, Hecht SS. Ultrasensitive High-Resolution Mass Spectrometric Analysis of a DNA Adduct of the Carcinogen Benzo[a]pyrene in Human Lung. Anal Chem 2017; 89:12735-12742. [PMID: 29111668 PMCID: PMC6027747 DOI: 10.1021/acs.analchem.7b02856] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Benzo[a]pyrene (BaP), an archetypical polycyclic aromatic hydrocarbon, is classified as "carcinogenic to humans" and is ubiquitous in the environment, as evident by the measurable levels of BaP metabolites in virtually all human urine samples examined. BaP carcinogenicity is believed to occur mainly through its covalent modification of DNA, resulting in the formation of BPDE-N2-dG, an adduct formed between deoxyguanosine and a diol epoxide metabolite of BaP, with subsequent mutation of critical growth control genes. In spite of the liquid chromatography-mass spectrometry (LC-MS)-based detection of BPDE-N2-dG in BaP-treated rodents, and indirectly through high-performance liquid chromatography (HPLC)-fluorescence detection of BaP-7,8,9,10-tetraols released from human DNA upon acid hydrolysis, BPDE-N2-dG adducts have rarely if ever been observed directly in human samples using LC-MS techniques, even though sophisticated methodologies have been employed which should have had sufficient sensitivity. With this in mind, we developed a liquid chromatography-electrospray ionization tandem mass spectrometry (LC-ESI-MS/MS) methodology employing high-resolution/accurate mass analysis for detecting ultratrace levels of these adducts. These efforts are directly translatable to the development of sensitive detection of other small molecules using trap-based LC-ESI-MS/MS detection. The developed methodology had a limit of detection (LOD) of 1 amol of BPDE-N2-dG on-column, corresponding to 1 BPDE-N2-dG adduct per 1011 nucleotides (1 adduct per 10 human lung cells) using 40 μg of human lung DNA. To our knowledge, this is the most sensitive DNA adduct quantitation method yet reported, exceeding the sensitivity of the 32P-postlabeling assay (∼1 adduct per 1010 nucleotides). Twenty-nine human lung DNA samples resulted in 20 positive measurements above the LOD, with smoker and nonsmoker DNA containing 3.1 and 1.3 BPDE-N2-dG adducts per 1011 nucleotides, respectively.
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Affiliation(s)
- Peter W. Villalta
- Masonic Cancer Center, University of Minnesota, 2231 6th Street SE, Minneapolis, MN 55455, USA
| | - J. Bradley Hochalter
- Masonic Cancer Center, University of Minnesota, 2231 6th Street SE, Minneapolis, MN 55455, USA
| | - Stephen S. Hecht
- Masonic Cancer Center, University of Minnesota, 2231 6th Street SE, Minneapolis, MN 55455, USA
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166
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Jiang D, Malla S, Fu YJ, Choudhary D, Rusling JF. Direct LC-MS/MS Detection of Guanine Oxidations in Exon 7 of the p53 Tumor Suppressor Gene. Anal Chem 2017; 89:12872-12879. [PMID: 29116749 PMCID: PMC5777150 DOI: 10.1021/acs.analchem.7b03487] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Oxidation of DNA by reactive oxygen species (ROS) yields 8-oxo-7,8-dihydroguanosine (8-oxodG) as primary oxidation product, which can lead to downstream G to T transversion mutations. DNA mutations are nonrandom, and mutations at specific codons are associated with specific cancers, as widely documented for the p53 tumor suppressor gene. Here, we present the first direct LC-MS/MS study (without isotopic labeling or hydrolysis) of primary oxidation sites of p53 exon 7. We oxidized a 32 base pair (bp) double-stranded (ds) oligonucleotide representing exon 7 of the p53 gene. Oxidized oligonucleotides were cut by a restriction endonuclease to provide small strands and enable positions and amounts of 8-oxodG to be determined directly by LC-MS/MS. Oxidation sites on the oligonucleotide generated by two oxidants, catechol/Cu2+/NADPH and Fenton's reagent, were located and compared. Guanines in codons 243, 244, 245, and 248 were most frequently oxidized by catechol/Cu2+/NADPH with relative oxidation of 5.6, 7.2, 2.6, and 10.7%, respectively. Fenton's reagent oxidations were more specific for guanines in codons 243 (20.3%) and 248 (10.4%). Modeling of docking of oxidizing species on the ds-oligonucleotide were consistent with the experimental codon oxidation sites. Significantly, codons 244 and 248 are mutational "hotspots" in nonsmall cell and small cell lung cancers, supporting a possible role of oxidation in p53 mutations leading to lung cancer.
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Affiliation(s)
- Di Jiang
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Spundana Malla
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - You-jun Fu
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Dharamainder Choudhary
- Department of Surgery and Neag Cancer Center, UConn Health, Farmington, Connecticut 06032, United States
| | - James F. Rusling
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
- Department of Surgery and Neag Cancer Center, UConn Health, Farmington, Connecticut 06032, United States
- Institute of Material Science, University of Connecticut, Storrs, Connecticut 06269, United States
- School of Chemistry, National University of Ireland at Galway, Galway H91 TK33, Ireland
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167
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Zhang D, Qu L, Zhou B, Wang G, Zhou G. Genomic variations in the counterpart normal controls of lung squamous cell carcinomas. Front Med 2017; 12:280-288. [PMID: 29185122 DOI: 10.1007/s11684-017-0580-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 08/01/2017] [Indexed: 12/28/2022]
Abstract
Lung squamous cell carcinoma (LUSC) causes approximately 400 000 deaths each year worldwide. The occurrence of LUSC is attributed to exposure to cigarette smoke, which induces the development of numerous genomic abnormalities. However, few studies have investigated the genomic variations that occur only in normal tissues that have been similarly exposed to tobacco smoke as tumor tissues. In this study, we sequenced the whole genomes of three normal lung tissue samples and their paired adjacent squamous cell carcinomas.We then called genomic variations specific to the normal lung tissues through filtering the genomic sequence of the normal lung tissues against that of the paired tumors, the reference human genome, the dbSNP138 common germline variants, and the variations derived from sequencing artifacts. To expand these observations, the whole exome sequences of 478 counterpart normal controls (CNCs) and paired LUSCs of The Cancer Genome Atlas (TCGA) dataset were analyzed. Sixteen genomic variations were called in the three normal lung tissues. These variations were confirmed by Sanger capillary sequencing. A mean of 0.5661 exonic variations/Mb and 7.7887 altered genes per sample were identified in the CNC genome sequences of TCGA. In these CNCs, C:G→T:A transitions, which are the genomic signatures of tobacco carcinogen N-methyl-N-nitro-N-nitrosoguanidine, were the predominant nucleotide changes. Twenty five genes in CNCs had a variation rate that exceeded 2%, including ARSD (18.62%), MUC4 (8.79%), and RBMX (7.11%). CNC variations in CTAGE5 and USP17L7 were associated with the poor prognosis of patients with LUSC. Our results uncovered previously unreported genomic variations in CNCs, rather than LUSCs, that may be involved in the development of LUSC.
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Affiliation(s)
- Dalin Zhang
- Division of Molecular Carcinogenesis and Targeted Therapy for Cancer, State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Liwei Qu
- Division of Molecular Carcinogenesis and Targeted Therapy for Cancer, State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Bo Zhou
- Division of Molecular Carcinogenesis and Targeted Therapy for Cancer, State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Guizhen Wang
- Division of Molecular Carcinogenesis and Targeted Therapy for Cancer, State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Guangbiao Zhou
- Division of Molecular Carcinogenesis and Targeted Therapy for Cancer, State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
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168
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Qu LW, Zhou B, Wang GZ, Chen Y, Zhou GB. Genomic variations in paired normal controls for lung adenocarcinomas. Oncotarget 2017; 8:104113-104122. [PMID: 29262625 PMCID: PMC5732791 DOI: 10.18632/oncotarget.22020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 09/23/2017] [Indexed: 02/06/2023] Open
Abstract
Somatic genomic mutations in lung adenocarcinomas (LUADs) have been extensively dissected, but whether the counterpart normal lung tissues that are exposed to ambient air or tobacco smoke as the tumor tissues do, harbor genomic variations, remains unclear. Here, the genome of normal lung tissues and paired tumors of 11 patients with LUAD were sequenced, the genome sequences of counterpart normal controls (CNCs) and tumor tissues of 513 patients were downloaded from TCGA database and analyzed. In the initial screening, genomic alterations were identified in the "normal" lung tissues and verified by Sanger capillary sequencing. In CNCs of TCGA datasets, a mean of 0.2721 exonic variations/Mb and 5.2885 altered genes per sample were uncovered. The C:G→T:A transitions, a signature of tobacco carcinogen N-methyl-N-nitro-N-nitrosoguanidine, were the predominant nucleotide changes in CNCs. 16 genes had a variant rate of more than 2%, and CNC variations in MUC5B, ZXDB, PLIN4, CCDC144NL, CNTNAP3B, and CCDC180 were associated with poor prognosis whereas alterations in CHD3 and KRTAP5-5 were associated with favorable clinical outcome of the patients. This study identified the genomic alterations in CNC samples of LUADs, and further highlighted the DNA damage effect of tobacco on lung epithelial cells.
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Affiliation(s)
- Li-Wei Qu
- Division of Molecular Carcinogenesis and Targeted Therapy for Cancer, State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Bo Zhou
- Division of Molecular Carcinogenesis and Targeted Therapy for Cancer, State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Gui-Zhen Wang
- Division of Molecular Carcinogenesis and Targeted Therapy for Cancer, State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Ying Chen
- Division of Molecular Carcinogenesis and Targeted Therapy for Cancer, State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Guang-Biao Zhou
- Division of Molecular Carcinogenesis and Targeted Therapy for Cancer, State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
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169
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Thaiparambil J, Mansour O, El-Zein R. Effect of Benzo[a]Pyrene on Spindle Misorientation and Fidelity of Chromosome Segregation in Lung Epithelial BEAS-2B Cells. Toxicol Sci 2017; 162:167-176. [DOI: 10.1093/toxsci/kfx229] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Jose Thaiparambil
- Department of Radiology, Houston Methodist Research Institute, Houston, Texas
| | - Oula Mansour
- Department of Radiology, Houston Methodist Research Institute, Houston, Texas
| | - Randa El-Zein
- Department of Radiology, Houston Methodist Research Institute, Houston, Texas
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170
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Youngren-Ortiz SR, Chougule MB. The Daniel K. Inouye College of Pharmacy Scripts: Targeted Nanocarrier Based Systems for the Treatment of Lung Cancer. HAWAI'I JOURNAL OF MEDICINE & PUBLIC HEALTH : A JOURNAL OF ASIA PACIFIC MEDICINE & PUBLIC HEALTH 2017; 76:318-325. [PMID: 29164017 PMCID: PMC5694976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In Hawai'i, lung cancer is among the top cancers diagnosed and a leading cause of death. Despite current understanding and modern surgery, radiology, and chemotherapy techniques, the survival of those suffering from lung cancer remains low. Current anticancer drugs have poor tumor tissue selectivity and toxicity issues that contribute to their overall low efficacy, detrimental effects to normal tissues, and drug resistance. A potential way of mitigating cancer is through RNA interference (RNAi) by the delivery of small interfering RNA (siRNA) to target select proteins or genes involved in cancer progression, known as oncoproteins or oncogenes, respectively. However, the clinical utility of delivering unformulated siRNA has been hindered due to poor cell penetration, nonspecific effects, rapid degradation, and short half-life. As an alternate for conventional chemotherapy, nanoparticles (AKA nanocarriers) may be designed to localize within the tumor environment and increase targeted cell internalization, thus reducing systemic adverse effects and increasing efficacy. Nanoparticles play important roles in drug delivery and have been widely studied for cancer therapy and diagnostics, termed collectively as theranostics. Nanoparticles composed of natural and artificial polymers, proteins, lipids, metals, and carbon-based materials have been developed for the delivery of siRNA. Cancer targeting has been improved by nanoparticle surface modification or conjugation with biomolecules that are attracted to or stimulate therapeutic agent release within cancer tissues or cells. In this mini-review article, we present recent progress in nanocarrier-mediated siRNA delivery systems that include lipid, polymer, metallic and carbon-based nanoparticles for lung cancer therapy.
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Affiliation(s)
- Susanne R Youngren-Ortiz
- Translational Drug Delivery Research Laboratory (DDR), Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, Hilo, HI (SRY-O, MBC)
| | - Mahavir B Chougule
- Translational Drug Delivery Research Laboratory (DDR), Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, Hilo, HI (SRY-O, MBC)
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171
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Chikara S, Mamidi S, Sreedasyam A, Chittem K, Pietrofesa R, Zuppa A, Moorthy G, Dyer N, Christofidou-Solomidou M, Reindl KM. Flaxseed Consumption Inhibits Chemically Induced Lung Tumorigenesis and Modulates Expression of Phase II Enzymes and Inflammatory Cytokines in A/J Mice. Cancer Prev Res (Phila) 2017; 11:27-37. [PMID: 29074535 DOI: 10.1158/1940-6207.capr-17-0119] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 09/26/2017] [Accepted: 10/18/2017] [Indexed: 12/22/2022]
Abstract
Flaxseed consumption is associated with reduced oxidative stress and inflammation in lung injury models and has shown anticancer effects for breast and prostate tissues. However, the chemopreventive potential of flaxseed remains unexplored for lung cancer. In this study, we investigated the effect of flaxseed on tobacco smoke carcinogen (NNK)-induced lung tumorigenesis in an A/J mouse model. Mice exposed to NNK were fed a control diet or a 10% flaxseed-supplemented diet for 26 weeks. Flaxseed-fed mice showed reduced lung tumor incidence (78%) and multiplicity, with an average of 2.7 ± 2.3 surface lung tumor nodules and 1.0 ± 0.9 H&E cross-section nodules per lung compared with the control group, which had 100% tumor incidence and an average of 10.2 ± 5.7 surface lung tumor nodules and 3.9 ± 2.6 H&E cross-section nodules per lung. Furthermore, flaxseed-fed mice had a lower incidence of adenocarcinomas compared with control-fed mice. Western blotting performed on normal lung tissues showed flaxseed suppressed phosphorylation (activation) of p-AKT, p-ERK, and p-JNK kinases. RNA-Seq data obtained from normal lung and lung tumors of control and flaxseed-fed mice suggested that flaxseed intake resulted in differential expression of genes involved in inflammation-mediated cytokine signaling (IL1, 6, 8, 9, and 12α), xenobiotic metabolism (several CYPs, GSTs, and UGTs), and signaling pathways (AKT and MAPK) involved in tumor cell proliferation. Together, our results indicate that dietary flaxseed supplementation may be an effective chemoprevention strategy for chemically induced lung carcinogenesis by altering signaling pathways, inflammation, and oxidative stress. Cancer Prev Res; 11(1); 27-37. ©2017 AACR.
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Affiliation(s)
- Shireen Chikara
- Department of Biological Sciences, North Dakota State University, Fargo, North Dakota
| | - Sujan Mamidi
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama
| | | | - Kishore Chittem
- Department of Plant Pathology, North Dakota State University, Fargo, North Dakota
| | - Ralph Pietrofesa
- Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Athena Zuppa
- Department of Anesthesiology and Critical Care, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Ganesh Moorthy
- Department of Anesthesiology and Critical Care, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Neil Dyer
- Department of Animal Sciences, North Dakota State University, Fargo, North Dakota
| | | | - Katie M Reindl
- Department of Biological Sciences, North Dakota State University, Fargo, North Dakota.
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172
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Youngren-Ortiz SR, Hill DB, Hoffmann PR, Morris KR, Barrett EG, Forest MG, Chougule MB. Development of Optimized, Inhalable, Gemcitabine-Loaded Gelatin Nanocarriers for Lung Cancer. J Aerosol Med Pulm Drug Deliv 2017; 30:299-321. [PMID: 28277892 PMCID: PMC5650720 DOI: 10.1089/jamp.2015.1286] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Accepted: 01/11/2017] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Aerosol delivery of chemotherapeutic nanocarriers represents a promising alternative for lung cancer therapy. This study optimized gemcitabine (Gem)-loaded gelatin nanocarriers (GNCs) cross-linked with genipin (Gem-GNCs) to evaluate their potential for nebulized lung cancer treatment. METHODS Gem-GNCs were prepared by two-step desolvation and optimized through Taguchi design and characterized for physicochemical properties. Particle size and morphology were confirmed by scanning and transmission electron microscopy. In vitro release of Gem from Gem-GNCs performed in Dulbecco's phosphate-buffered saline and simulated lung fluid was evaluated to determine release mechanisms. Particle size stability was assessed under varying pH. Differential scanning calorimetry and powder X-ray diffraction were used to determine the presence and stability of Gem-GNC components and amorphization of Gem, respectively. Gem-GNC efficacy within A549 and H460 cells was evaluated using MTT assays. Mucus rheology upon treatment with Gem-GNCs, lactose, and normal saline control was measured. Andersen cascade impaction identified the aerodynamic particle size distribution of the nebulized formulation. RESULTS Gem-GNCs had particle size, zeta potential, entrapment efficiency, and loading efficiency of 178 ± 7.1 nm, -18.9 mV, 92.5%, and 9.1%, respectively. The Gem and formulation excipients where molecularly dispersed and configured amorphously. Gem-GNCs were stable at pH 5.4-7.4 for 72 hours. Gem release from Gem-GNCs was governed by non-Fickian controlled release due to diffusion/erosion from a matrix-based nanocarrier. Gem-GNCs elicited a 40% reduction of the complex viscosity η*(1 Hz) of human bronchial epithelial cell mucus containing 3 wt% solids to mimic mild airway disease. The nebulized Gem-GNCs had a mass median aerodynamic diameter (MMAD) of 2.0 ± 0.16 μm, geometric standard deviation (GSD) of 2.7 ± 0.16, and fine particle fraction (FPF) of 75.2% ± 2.4%. The Gem-GNC formulation did not outperform the Gem solution in A549 cells. However, in H460, Gem-GNCs outperformed the Gem IC50 reduction by ∼5-fold at 48 and 10-fold 72 hours. CONCLUSION Stable, effective, and sustained-release Gem-GNCs were developed. The nebulized Gem-GNCs had satisfactory MMAD, GSD, and FPF and the formulation reduced the dynamic complex viscosity of mucus consistent with increased mobility of nanoparticles.
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Affiliation(s)
- Susanne R. Youngren-Ortiz
- Translational Drug Delivery Research (TransDDR) Laboratory, Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, Hilo, Hawai'i
| | - David B. Hill
- Department of Physics and Astronomy, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
- Marsico Lung Institute/CF Center, The University of North Carolina School of Medicine, Chapel Hill, North Carolina
| | - Peter R. Hoffmann
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawai'i, Honolulu, Hawai'i
| | - Kenneth R. Morris
- Translational Drug Delivery Research (TransDDR) Laboratory, Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, Hilo, Hawai'i
- The Lachman Institute for Pharmaceutical Analysis, Arnold & Marie Schwartz College of Pharmacy and Health Sciences, Long Island University–Brooklyn Campus, Brooklyn, New York
| | - Edward G. Barrett
- Respiratory and Asthma Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - M. Gregory Forest
- Carolina Center for Interdisciplinary Applied Mathematics, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Mahavir B. Chougule
- Translational Drug Delivery Research (TransDDR) Laboratory, Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, Hilo, Hawai'i
- Pii Center for Pharmaceutical Technology, Research Institute of Pharmaceutical Sciences, University of Mississippi, Oxford, Mississippi
- Translational Drug and Gene Delivery Research (TransDGDR) Laboratory, Department of Pharmaceutics and Drug Delivery, School of Pharmacy, University of Mississippi, Oxford, Mississippi
- Natural Products and Experimental Therapeutics Program, University of Hawai'i Cancer Center, University of Hawai'i, Honolulu, Hawai'i
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173
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Ito S, Kamoto Y, Sakai A, Sasai K, Hayashi T, Toyooka S, Katayama H. Unique circulating microRNAs in relation to EGFR mutation status in Japanese smoker male with lung adenocarcinoma. Oncotarget 2017; 8:114685-114697. [PMID: 29383112 PMCID: PMC5777724 DOI: 10.18632/oncotarget.21425] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Accepted: 09/11/2017] [Indexed: 02/06/2023] Open
Abstract
The incidence of lung adenocarcinoma has been increasing recently in smokers. The molecular target therapy has been developed for lung adenocarcinoma patients harboring EGFR gene mutation. However, the treatment modalities for patients without mutation are currently limited. Thus, analysis of EGFR gene mutation status at early stage is important strategy to classify the patients for improving treatments and prognosis efficiently. This study aimed to identify microRNA (miRNA) signature in relation to mutation status in EGFR gene in early stage of lung adenocarcinoma male patients with smoking history. MiRNA profiles were assessed by microarray in paired plasma and tissue pooled from 10 EGFR wild type (EGFR-wt) and 10 EGFR mutated (EGFR-mut) patients. Expressions of selected miRNAs were verified further by real-time qRT-PCR in 83 plasma samples consisting of 55 EGFR-wt patients and 28 EGFR-mut patients and their correlation with clinicopathological parameters and EGFR gene mutation status were evaluated. We found that seven miRNAs (miR-16-5p, miR-23a-3p, miR-103a-3p, miR122-5p, miR-223-3p, miR-346 and miR-451a) were differentially expressed in stage I and stage I+II. Especially, miR-23a-3p was only miRNA shown higher expression in EGFR-wt patients than EGFR-mut patients. Thus, our findings could be useful non-invasive biomarkers to differentiate mutation status in EGFR gene in smoker lung adenocarcinoma male patients.
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Affiliation(s)
- Sachio Ito
- Department of Molecular Oncology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Yoshihiro Kamoto
- Department of Molecular Oncology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Akiko Sakai
- Department of Molecular Oncology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Kaori Sasai
- Department of Molecular Oncology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Tatsuro Hayashi
- Division of Thoracic Surgery, National Hospital Organization, Yamaguchi-Ube Medical Center, Yamaguchi, Japan
| | - Shinichi Toyooka
- Department of Thoracic, Breast and Endocrinological Surgery, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.,Department of Clinical Genomic Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Hiroshi Katayama
- Department of Molecular Oncology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
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174
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Goettel M, Niessner R, Mueller D, Scherer M, Scherer G, Pluym N. Metabolomic Fingerprinting in Various Body Fluids of a Diet-Controlled Clinical Smoking Cessation Study Using a Validated GC-TOF-MS Metabolomics Platform. J Proteome Res 2017; 16:3491-3503. [PMID: 28849940 DOI: 10.1021/acs.jproteome.7b00128] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Untargeted GC-TOF-MS analysis proved to be a suitable analytical platform to determine alterations in the metabolic profile. Several metabolic pathways were found to be altered in a first clinical study comparing smokers against nonsmokers. Subsequently, we conducted a clinical diet-controlled study to investigate alterations in the metabolic profile during the course of 3 months of smoking cessation. Sixty male subjects were included in the study, and plasma, saliva, and urine samples were collected during four 24 h stationary visits: at baseline, while still smoking, after 1 week, after 1 month, and after 3 months of cessation. Additionally, subjects were monitored for their compliance by measurements of CO in exhaled breath and salivary cotinine throughout the study. GC-TOF-MS fingerprinting was applied to plasma, saliva, and urine samples derived from 39 compliant subjects. In total, 52 metabolites were found to be significantly altered including 26 in plasma, 20 in saliva, and 12 in urine, respectively. In agreement with a previous study comparing smokers and nonsmokers, the fatty acid and amino acid metabolism showed significant alterations upon 3 months of smoking cessation. Thus these results may indicate a partial recovery of metabolic pathway perturbations, even after a relatively short period of smoking cessation.
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Affiliation(s)
- Michael Goettel
- Chair for Analytical Chemistry, Technische Universität München , Marchioninistraße 17, 81377 Munich, Germany.,ABF, Analytisch-Biologisches Forschungslabor GmbH , Semmelweisstraße 5, 82152 Planegg, Germany
| | - Reinhard Niessner
- Chair for Analytical Chemistry, Technische Universität München , Marchioninistraße 17, 81377 Munich, Germany
| | - Daniel Mueller
- ABF, Analytisch-Biologisches Forschungslabor GmbH , Semmelweisstraße 5, 82152 Planegg, Germany
| | - Max Scherer
- ABF, Analytisch-Biologisches Forschungslabor GmbH , Semmelweisstraße 5, 82152 Planegg, Germany
| | - Gerhard Scherer
- ABF, Analytisch-Biologisches Forschungslabor GmbH , Semmelweisstraße 5, 82152 Planegg, Germany
| | - Nikola Pluym
- ABF, Analytisch-Biologisches Forschungslabor GmbH , Semmelweisstraße 5, 82152 Planegg, Germany
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175
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Puppala M, Narayanapillai SC, Leitzman P, Sun H, Upadhyaya P, O'Sullivan MG, Hecht SS, Xing C. Pilot in Vivo Structure-Activity Relationship of Dihydromethysticin in Blocking 4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanone-Induced O 6-Methylguanine and Lung Tumor in A/J Mice. J Med Chem 2017; 60:7935-7940. [PMID: 28806079 DOI: 10.1021/acs.jmedchem.7b00921] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
(+)-Dihydromethysticin was recently identified as a promising lung cancer chemopreventive agent, while (+)-dihydrokavain was completely ineffective. A pilot in vivo structure-activity relationship (SAR) was explored, evaluating the efficacy of its analogs in blocking 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone-induced short-term O6-methylguanine and long-term adenoma formation in the lung tissues in A/J mice. Both results revealed cohesive SARs, demonstrating that the methylenedioxy functional group in DHM is essential while the lactone functional group tolerates modifications.
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Affiliation(s)
- Manohar Puppala
- Department of Medicinal Chemistry, College of Pharmacy, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Sreekanth C Narayanapillai
- Department of Medicinal Chemistry, College of Pharmacy, University of Minnesota , Minneapolis, Minnesota 55455, United States.,Department of Medicinal Chemistry, College of Pharmacy, University of Florida , Gainesville, Florida 32610, United States
| | - Pablo Leitzman
- Department of Medicinal Chemistry, College of Pharmacy, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Haifeng Sun
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida , Gainesville, Florida 32610, United States
| | - Pramod Upadhyaya
- Masonic Cancer Center, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - M Gerard O'Sullivan
- Masonic Cancer Center Comparative Pathology Shared Resource, University of Minnesota , St. Paul, Minnesota 55108, United States.,Department of Veterinary Population Medicine, University of Minnesota , St. Paul, Minnesota 55108, United States
| | - Stephen S Hecht
- Masonic Cancer Center, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Chengguo Xing
- Department of Medicinal Chemistry, College of Pharmacy, University of Minnesota , Minneapolis, Minnesota 55455, United States.,Department of Medicinal Chemistry, College of Pharmacy, University of Florida , Gainesville, Florida 32610, United States
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176
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Leng J, Wang Y. Liquid Chromatography-Tandem Mass Spectrometry for the Quantification of Tobacco-Specific Nitrosamine-Induced DNA Adducts in Mammalian Cells. Anal Chem 2017; 89:9124-9130. [PMID: 28749651 PMCID: PMC5620023 DOI: 10.1021/acs.analchem.7b01857] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Quantification of DNA lesions constitutes one of the main tasks in toxicology and in assessing health risks accompanied by exposure to carcinogens. Tobacco-specific nitrosamines 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) and N'-nitrosonornicotine (NNN) can undergo metabolic transformation to give a reactive intermediate that pyridyloxobutylates nucleobases and phosphate backbone of DNA. Here, we reported a highly sensitive method, relying on the use of nanoflow liquid chromatography-nanoelectrospray ionization-tandem mass spectrometry (nLC-nESI-MS/MS), for the simultaneous quantifications of O6-[4-(3-pyridyl)-4-oxobut-1-yl]-2'-deoxyguanosine (O6-POBdG) as well as O2- and O4-[4-(3-pyridyl)-4-oxobut-1-yl]-thymidine (O2-POBdT and O4-POBdT). By using this method, we measured the levels of the three DNA adducts with the use of 10 μg of DNA isolated from cultured mammalian cells exposed to a model pyridyloxobutylating agent, 4-(acetoxymethylnitrosamino)-1-(3-pyridyl)-1-butanone (NNKOAc). Our results demonstrated, for the first time, the formation of O4-POBdT in naked DNA and in genomic DNA of cultured mammalian cells exposed with NNKOAc. We also revealed that the levels of the three lesions increased with the dose of NNKOAc and that O2-POBdT and O4-POBdT could be subjected to repair by the nucleotide excision repair (NER) pathway. The method reported here will be useful for investigations about the involvement of other DNA repair pathways in the removal of these lesions and for human toxicological studies in the future.
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Affiliation(s)
- Jiapeng Leng
- Department of Chemistry, University of California, Riverside, California 92521-0403, United States
| | - Yinsheng Wang
- Corresponding Author. Tel.: (951) 827-2700. Fax: (951) 827-4713.
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177
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Khariwala SS, Ma B, Ruszczak C, Carmella SG, Lindgren B, Hatsukami DK, Hecht SS, Stepanov I. High Level of Tobacco Carcinogen-Derived DNA Damage in Oral Cells Is an Independent Predictor of Oral/Head and Neck Cancer Risk in Smokers. Cancer Prev Res (Phila) 2017; 10:507-513. [PMID: 28679497 PMCID: PMC5712492 DOI: 10.1158/1940-6207.capr-17-0140] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 06/06/2017] [Accepted: 06/30/2017] [Indexed: 02/07/2023]
Abstract
Exposure to tobacco-specific nitrosamines (TSNA) and polycyclic aromatic hydrocarbons (PAH) is recognized to play an important role in the development of oral/head and neck squamous cell cancer (HNSCC). We recently reported higher levels of TSNA-associated DNA adducts in the oral cells of smokers with HNSCC as compared with cancer-free smokers. In this study, we further investigated the tobacco constituent exposures in the same smokers to better understand the potential causes for the elevated oral DNA damage in smokers with HNSCC. Subjects included cigarette smokers with HNSCC (cases, n = 30) and cancer-free smokers (controls, n = 35). At recruitment, tobacco/alcohol use questionnaires were completed, and urine and oral cell samples were obtained. Analysis of urinary 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol (NNAL) and N'-Nitrosonornicotine (NNN; TSNA biomarkers), 1-hydroxypyrene (1-HOP, a PAH), cotinine, 3'-hydroxycotinine, and the nicotine metabolite ratio (NMR) were performed. Cases and controls differed in mean age, male preponderance, and frequency of alcohol consumption (but not total alcoholic drinks). Univariate analysis revealed similar levels of NNN, 1-HOP, and cotinine between groups but, as reported previously, significantly higher DNA adduct formation in the cases. Multiple regression adjusting for potential confounders showed persistent significant difference in DNA adduct levels between cases and controls [ratio of geometric means, 20.0; 95% CI, 2.7-148.6). Our cohort of smokers with HNSCC demonstrates higher levels of TSNA-derived oral DNA damage in the setting of similar exposure to nicotine and tobacco carcinogens. Among smokers, DNA adduct formation may act as a predictor of eventual development of HNSCC that is independent of carcinogen exposure indicators. Cancer Prev Res; 10(9); 507-13. ©2017 AACRSee related editorial by Johnson and Bauman, p. 489.
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Affiliation(s)
- Samir S Khariwala
- Department of Otolaryngology-Head and Neck Surgery, University of Minnesota, Minneapolis, Minnesota.
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Bin Ma
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Chris Ruszczak
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Steven G Carmella
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Bruce Lindgren
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | | | - Stephen S Hecht
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Irina Stepanov
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
- Environmental Health, School of Public Health, University of Minnesota, Minneapolis, Minnesota
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178
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Chen J, Domingue JC, Sears CL. Microbiota dysbiosis in select human cancers: Evidence of association and causality. Semin Immunol 2017; 32:25-34. [PMID: 28822617 DOI: 10.1016/j.smim.2017.08.001] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 07/25/2017] [Accepted: 08/03/2017] [Indexed: 02/06/2023]
Abstract
The human microbiota is a complex ecosystem of diverse microorganisms consisting of bacteria, viruses, and fungi residing predominantly in epidermal and mucosal habitats across the body, such as skin, oral cavity, lung, intestine and vagina. These symbiotic communities in health, or dysbiotic communities in disease, display tremendous interaction with the local environment and systemic responses, playing a critical role in the host's nutrition, immunity, metabolism and diseases including cancers. While the profiling of normal microbiota in healthy populations is useful and necessary, more recent studies have focused on the microbiota associated with disease, particularly cancers. In this paper, we review current evidence on the role of the human microbiota in four cancer types (colorectal cancer, head and neck cancer, pancreatic cancer, and lung cancer) proposed as affected by both the oral and gut microbiota, and provide a perspective on current gaps in the knowledge of the microbiota and cancer.
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Affiliation(s)
- Jie Chen
- Department of Molecular Microbiology and Immunology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205, USA
| | - Jada C Domingue
- Department of Medicine, Division of Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Cynthia L Sears
- Department of Molecular Microbiology and Immunology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205, USA; Department of Medicine, Division of Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; Department of Oncology, Division of Tumor Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; Bloomberg-Kimmel Cancer Immunotherapy Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA.
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179
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Zhou B, Wang GZ, Wen ZS, Zhou YC, Huang YC, Chen Y, Zhou GB. Somatic Mutations and Splicing Variants of Focal Adhesion Kinase in Non–Small Cell Lung Cancer. J Natl Cancer Inst 2017; 110:4565750. [PMID: 29087503 DOI: 10.1093/jnci/djx157] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 06/30/2017] [Indexed: 12/17/2022] Open
Affiliation(s)
- Bo Zhou
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences and University of Chinese Academy of Sciences, Beijing, China
| | - Gui-Zhen Wang
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences and University of Chinese Academy of Sciences, Beijing, China
| | - Zhe-Sheng Wen
- Department of Thoracic Surgery, the Cancer Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yong-Chun Zhou
- Department of Thoracic Surgery, the Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yun-Chao Huang
- Department of Thoracic Surgery, the Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Ying Chen
- School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Guang-Biao Zhou
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences and University of Chinese Academy of Sciences, Beijing, China
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180
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Expression patterns for nicotinic acetylcholine receptor subunit genes in smoking-related lung cancers. Oncotarget 2017; 8:67878-67890. [PMID: 28978081 PMCID: PMC5620221 DOI: 10.18632/oncotarget.18948] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 06/17/2017] [Indexed: 01/03/2023] Open
Abstract
Cigarette smoking is associated with increased risk for all histologic types of lung cancer, but why the strength of this association is stronger for squamous cell carcinoma than adenocarcinoma of the lung (SQC-L, ADC-L) is not fully understood. Because nicotine and tobacco-specific nitrosamines contribute to carcinogenesis by activating nicotinic acetylcholine receptors (nAChRs) on lung tumors and epithelial cells, we investigated whether differential expression of nAChR subtypes in these tumors could explain their different association with smoking. Expression of nAChR subunit genes in paired tumor and non-tumor lung specimens from 40 SQC-L and 38 ADC-L patients was analyzed by quantitative PCR. Compared to normal lung, both tumors share: i) transcriptional dysregulation of CHRNA3/CHRNA5/CHRNB4 (α3, α5, β4 subunits) at the chromosomal locus that predisposes to lung cancer; and ii) decreased expression of CHRFAM7A (dupα7 subunit); this last subunit negatively modulates α7-nAChR activity in oocytes. In contrast, CHRNA7 (α7 subunit) expression was increased in SQC-L, particularly in smokers and non-survivors, while CHRNA4 (α4 subunit) expression was decreased in ADC-L. Thus, over-representation of cancer-stimulating α7-nAChR in SQC-L, also potentiated by smoking, and under-representation of cancer-inhibiting α4β2-nAChR in ADC-L could explain the different tobacco influences on the tumorigenic process in each cancer type.
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181
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Cui S, Jiang L. Factors associated with efficacy of first-generation epidermal growth factor receptor tyrosine kinase inhibitors in non-small-cell lung cancer. Tumour Biol 2017; 39:1010428317705340. [PMID: 28468578 DOI: 10.1177/1010428317705340] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
The finding of epidermal growth factor receptor tyrosine kinase inhibitors, which reflects a classical process of translational research, is a critical milestone for non-small-cell lung cancer treatment. Currently, epidermal growth factor receptor tyrosine kinase inhibitors are recommended as first-line therapy for non-small-cell lung cancer patients harboring epidermal growth factor receptor-sensitive mutations. The status of epidermal growth factor receptor mutation is widely acknowledged as superior to other clinical factors, such as smoking, gender, and histological types for predicting the response to epidermal growth factor receptor tyrosine kinase inhibitors. However, recent studies have shown that the efficacy might differ in patients with the same epidermal growth factor receptor-sensitive mutations, highlighting the need to investigate the putative factors related to the efficacy of epidermal growth factor receptor tyrosine kinase inhibitors. This article reviews the factors associated with clinical efficacy of first-generation epidermal growth factor receptor tyrosine kinase inhibitors, such as gefitinib and erlotinib, and analyzes their potential implications with respect to clinical application. In addition, new findings related to clinical practice with respect to epidermal growth factor receptor tyrosine kinase inhibitors efficacy were summarized in this article.
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Affiliation(s)
- Shaohua Cui
- Department of Pulmonary Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Liyan Jiang
- Department of Pulmonary Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
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182
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Zhang L, Li J, Hu J, Li D, Wang X, Zhang R, Zhang H, Shi M, Chen H. Cigarette smoke extract induces EGFR-TKI resistance via promoting EGFR signaling pathway and ROS generation in NSCLC cell lines. Lung Cancer 2017; 109:109-116. [PMID: 28577939 DOI: 10.1016/j.lungcan.2017.05.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 04/10/2017] [Accepted: 05/10/2017] [Indexed: 12/30/2022]
Abstract
OBJECTIVES Epithelial growth factor receptor (EGFR) somatic-mutated non-small cell lung cancer (NSCLC) patients with smoking history always show a poor response to EGFR tyrosine kinase inhibitors (EGFR-TKIs). The aim of the study is to explore the molecular mechanism of EGFR-TKI resistance induced by cigarette smoke extract and investigate the novel anti-resistance strategies. METHODS The effect of cigarette smoke extract (CSE) on gefitinib sensitivity, EGFR signaling, apoptosis and reactive oxygen species (ROS) levels were detected in vitro by MTT assays, western blot, flow cytometry and laser scanning confocal microscope, respectively. RESULTS MTT assays presented that CSE claimed antagonistic effect on gefitinib sensitivity via the up-regulated half maximal inhibitory concentration (IC50) values, western blot showed that CSE instigated EGFR, AKT phosphorylation, while N-Acetyl-l-Cysteine (NAC) could alleviate gefitinib resistance and abort the aberrant phosphorylation in both PC-9 and A549 cells. Confocal microscope and flow cytometry displayed that ROS generation increased after CSE exposure in NSCLC cells and this change could be inhibited by NAC. CONCLUSION Cigarette smoke extract induces EGFR-TKI resistance via promoting EGFR signaling and ROS generation in NSCLC cell lines which could be suppressed by NAC. Alternatively, combined NAC with EGFR-TKIs to treat EGFR mutated NSCLC patients with smoking history may be a potential choice in clinical setting.
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Affiliation(s)
- Lu Zhang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Jun Li
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Jing Hu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Dandan Li
- Department of Respiratory Medicine, Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, China
| | - Xiaohui Wang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Rui Zhang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Hui Zhang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Meng Shi
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Hong Chen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
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183
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Zhang TX, Saccone NL, Bierut LJ, Rice JP. Targeted sequencing identifies genetic polymorphisms of flavin-containing monooxygenase genes contributing to susceptibility of nicotine dependence in European American and African American. Brain Behav 2017; 7:e00651. [PMID: 28413702 PMCID: PMC5390834 DOI: 10.1002/brb3.651] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 11/27/2016] [Accepted: 12/22/2016] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Smoking is a leading cause of preventable death. Early studies based on samples of twins have linked the lifetime smoking practices to genetic predisposition. The flavin-containing monooxygenase (FMO) protein family consists of a group of enzymes that metabolize drugs and xenobiotics. Both FMO1 and FMO3 were potentially susceptible genes for nicotine metabolism process. METHODS In this study, we investigated the potential of FMO genes to confer risk of nicotine dependence via deep targeted sequencing in 2,820 study subjects comprising 1,583 nicotine dependents and 1,237 controls from European American and African American. Specifically, we focused on the two genomic segments including FMO1,FMO3, and pseudo gene FMO6P, and aimed to investigate the potential association between FMO genes and nicotine dependence. Both common and low-frequency/rare variants were analyzed using different algorithms. The potential functional significance of SNPs with association signal was investigated with relevant bioinformatics tools. RESULTS We identified different clusters of significant common variants in European (with most significant SNP rs6674596, p = .0004, OR = 0.67, MAF_EA = 0.14, FMO1) and African Americans (with the most significant SNP rs6608453, p = .001, OR = 0.64, MAF_AA = 0.1, FMO6P). No significant signals were identified through haplotype-based analyses. Gene network investigation indicated that both FMO1 and FMO3 have a strong relation with a variety of genes belonging to CYP gene families (with combined score greater than 0.9). Most of the significant variants identified were SNPs located within intron regions or with unknown functional significance, indicating a need for future work to understand the underlying functional significance of these signals. CONCLUSIONS Our findings indicated significant association between FMO genes and nicotine dependence. Replications of our findings in other ethnic groups were needed in the future. Most of the significant variants identified were SNPs located within intronic regions or with unknown functional significance, indicating a need for future work to understand the underlying functional significance of these signals.
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Affiliation(s)
- Tian-Xiao Zhang
- Department of Psychiatry Washington University School of Medicine St. Louis MO USA
| | - Nancy L Saccone
- Department of Genetics Washington University School of Medicine St. Louis MO USA
| | - Laura J Bierut
- Department of Psychiatry Washington University School of Medicine St. Louis MO USA
| | - John P Rice
- Department of Psychiatry Washington University School of Medicine St. Louis MO USA
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184
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Plausible Roles for RAGE in Conditions Exacerbated by Direct and Indirect (Secondhand) Smoke Exposure. Int J Mol Sci 2017; 18:ijms18030652. [PMID: 28304347 PMCID: PMC5372664 DOI: 10.3390/ijms18030652] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/07/2017] [Accepted: 03/14/2017] [Indexed: 02/07/2023] Open
Abstract
Approximately 1 billion people smoke worldwide, and the burden placed on society by primary and secondhand smokers is expected to increase. Smoking is the leading risk factor for myriad health complications stemming from diverse pathogenic programs. First- and second-hand cigarette smoke contains thousands of constituents, including several carcinogens and cytotoxic chemicals that orchestrate chronic inflammatory responses and destructive remodeling events. In the current review, we outline details related to compromised pulmonary and systemic conditions related to smoke exposure. Specifically, data are discussed relative to impaired lung physiology, cancer mechanisms, maternal-fetal complications, cardiometabolic, and joint disorders in the context of smoke exposure exacerbations. As a general unifying mechanism, the receptor for advanced glycation end-products (RAGE) and its signaling axis is increasingly considered central to smoke-related pathogenesis. RAGE is a multi-ligand cell surface receptor whose expression increases following cigarette smoke exposure. RAGE signaling participates in the underpinning of inflammatory mechanisms mediated by requisite cytokines, chemokines, and remodeling enzymes. Understanding the biological contributions of RAGE during cigarette smoke-induced inflammation may provide critically important insight into the pathology of lung disease and systemic complications that combine during the demise of those exposed.
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185
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Breast tumor DNA methylation patterns associated with smoking in the Carolina Breast Cancer Study. Breast Cancer Res Treat 2017; 163:349-361. [PMID: 28275920 DOI: 10.1007/s10549-017-4178-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 02/26/2017] [Indexed: 12/17/2022]
Abstract
PURPOSE Tobacco smoking is a risk factor in several cancers, yet its roles as a putative etiologic exposure or poor prognostic factor in breast cancer are less clear. Altered DNA methylation contributes to breast cancer development and may provide a mechanistic link between smoking and gene expression changes leading to cancer development or progression. METHODS Using a cancer-focused array, we examined methylation at 933 CpGs in 517 invasive breast tumors in the Carolina Breast Cancer Study to determine whether methylation patterns differ by exposure to tobacco smoke. Multivariable generalized linear regression models were used to compare tumor methylation profiles between smokers and never smokers, overall, or stratified on hormone receptor (HR) status. RESULTS Modest differences in CpG methylation were detected at p < 0.05 in breast tumors from current or ever smokers compared with never smokers. In stratified analyses, HR- tumors from smokers exhibited primarily hypomethylation compared with tumors from never smokers; hypomethylation was similarly detected within the more homogeneous basal-like subtype. Most current smoking-associated CpG loci exhibited methylation levels in former smokers that were intermediate between those in current and never smokers and exhibited progressive changes in methylation with increasing duration of smoking. Among former smokers, restoration of methylation toward baseline (never smoking) levels was observed with increasing time since quitting. Moreover, smoking-related hypermethylation was stronger in HR+ breast tumors from blacks than in whites. CONCLUSIONS Our results suggest that breast tumor methylation patterns differ with tobacco smoke exposure; however, additional studies are needed to confirm these findings.
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Abstract
Nicotine is the primary addictive agent in tobacco, and P450 2A6 (gene name: CYP2A6) is the primary catalyst of nicotine metabolism. It was proposed more than 20 years ago that individuals who metabolize nicotine poorly would smoke less, either fewer cigarettes per day or less intensely per cigarette, compared to smokers who metabolize nicotine more efficiently. These poor metabolizers would then be less likely to develop lung cancer due to their lower exposure to the many carcinogens delivered with nicotine in each puff of smoke. Numerous studies have reported that smokers who carry reduced activity or null CYP2A6 alleles do smoke less. Yet only in Asian populations, both Japanese and Chinese, which have a high prevalence of genetic variants, has a link between CYP2A6, smoking dose, and lung cancer been established. In other ethnic groups, it has been challenging to confirm a direct link between P450 2A6-mediated nicotine metabolism and the risk of lung cancer. This challenge is due in part to the difficulty in accurately quantifying smoking dose and accurately predicting or measuring P450 2A6-mediated nicotine metabolism. Biomarkers of nicotine metabolism and smoking exposure, including the ratio of trans-3-hydroxycotine to cotinine, a measure of P450 2A6 activity and plasma cotinine, or urinary total nicotine equivalents (the sum of nicotine and six metabolites) as measures of exposure are useful for addressing this challenge. However, to take full advantage of these biomarkers in the study of ethnic/racial differences in the risk of lung cancer requires the complete characterization of nicotine metabolism across ethnic/racial groups. Variation in metabolism pathways, other than those catalyzed by P450 2A6, can impact biomarkers of both nicotine metabolism and dose. This is clearly important for smokers with low levels of UGT2B10-catalyzed nicotine and cotinine glucuronidation because the UGT2B10 genotype influences plasma cotinine levels. Cotinine is not glucuronidated in 15% of African American smokers (compared to 1% of Whites) due to the prevalence of a UGT2B10 splice variant. This variant contributes significantly to the higher plasma cotinine levels per cigarette in this group and may also influence the accuracy of the 3HCOT to cotinine ratio as a measure of P450 2A6 activity.
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Affiliation(s)
- Sharon E. Murphy
- Department of Biochemistry Molecular Biology and Biophysics and Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455
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187
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Hecht SS. Oral Cell DNA Adducts as Potential Biomarkers for Lung Cancer Susceptibility in Cigarette Smokers. Chem Res Toxicol 2017; 30:367-375. [PMID: 28092948 PMCID: PMC5310195 DOI: 10.1021/acs.chemrestox.6b00372] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
This perspective considers the use of oral cell DNA adducts, together with exposure and genetic information, to potentially identify those cigarette smokers at highest risk for lung cancer, so that appropriate preventive measures could be initiated at a relatively young age before too much damage has been done. There are now well established and validated analytical methods for the quantitation of urinary and serum metabolites of tobacco smoke toxicants and carcinogens. These metabolites provide a profile of exposure and in some cases lung cancer risk, but they do not yield information on the critical DNA damage parameter that leads to mutations in cancer growth control genes such as KRAS and TP53. Studies demonstrate a correlation between changes in the oral cavity and lung in cigarette smokers, due to the field effect of tobacco smoke. Oral cell DNA is readily obtained in contrast to DNA samples from the lung. Studies in which oral cell DNA and salivary DNA have been analyzed for specific DNA adducts are reviewed; some of the adducts identified have also been previously reported in lung DNA from smokers. The multiple challenges of developing a panel of oral cell DNA adducts that could be routinely quantified by mass spectrometry are discussed.
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Affiliation(s)
- Stephen S. Hecht
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455
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188
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Jacob P, Benowitz NL, Destaillats H, Gundel L, Hang B, Martins-Green M, Matt GE, Quintana PJE, Samet JM, Schick SF, Talbot P, Aquilina NJ, Hovell MF, Mao JH, Whitehead TP. Thirdhand Smoke: New Evidence, Challenges, and Future Directions. Chem Res Toxicol 2017; 30:270-294. [PMID: 28001376 PMCID: PMC5501723 DOI: 10.1021/acs.chemrestox.6b00343] [Citation(s) in RCA: 149] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Thirdhand smoke (THS) is the contamination that persists after secondhand tobacco smoke has been emitted into air. It refers to the tobacco-related gases and particles that become embedded in materials, such as the carpet, walls, furniture, blankets, and toys. THS is not strictly smoke, but chemicals that adhere to surfaces from which they can be released back into the air, undergo chemical transformations and/or accumulate. Currently, the hazards of THS are not as well documented as the hazards of secondhand smoke (SHS). In this Perspective, we describe the distribution and chemical changes that occur as SHS is transformed into THS, studies of environmental contamination by THS, human exposure studies, toxicology studies using animal models and in vitro systems, possible approaches for avoiding exposure, remediation of THS contamination, and priorities for further research.
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Affiliation(s)
- Peyton Jacob
- Division of Clinical Pharmacology and Experimental herapeutics, Departments of Psychiatry and Medicine, University of California, San Francisco, California 94143, United States
| | - Neal L. Benowitz
- Division of Clinical Pharmacology and Experimental Therapeutics, Medical Service, Departments of Medicine, and Bioengineering & Therapeutic Sciences, University of California, San Francisco, California 94143, United States
- Center for Tobacco Control Research and Education, University of California, San Francisco, California 94143, United States
| | - Hugo Destaillats
- Indoor Environment Group, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Lara Gundel
- Indoor Environment Group, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Bo Hang
- Biological Systems & Engineering, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Manuela Martins-Green
- Department of Cell Biology and Neuroscience, University of California Riverside 92521, United States
| | - Georg E. Matt
- Department of Psychology, San Diego State University, San Diego, California 92182, United States
| | - Penelope J. E. Quintana
- Graduate School of Public Health, San Diego State University, San Diego, California 92182, United States
| | - Jonathan M. Samet
- Department of Preventive Medicine, The Keck School of Medicine, University of Southern California, Los Angeles, California, 90089, United States
| | - Suzaynn F. Schick
- Division of Occupational and Environmental Medicine, School of Medicine, University of California, San Francisco, California 94143, United States
| | - Prue Talbot
- Department of Cell Biology and Neuroscience, University of California Riverside 92521, United States
| | - Noel J. Aquilina
- Department of Geosciences, University of Malta, Msida, MSD 2080, Malta
| | - Melbourne F. Hovell
- Graduate School of Public Health, San Diego State University, San Diego, California 92182, United States
| | - Jian-Hua Mao
- Biological Systems & Engineering, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Todd P. Whitehead
- The Center or Integrative Research on Childhood Leukemia and the Environment, School of Public Health, University of California, Berkeley, 94704, United States
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Koper A, Zeef LAH, Joseph L, Kerr K, Gosney J, Lindsay MA, Booton R. Whole Transcriptome Analysis of Pre-invasive and Invasive Early Squamous Lung Carcinoma in Archival Laser Microdissected Samples. Respir Res 2017; 18:12. [PMID: 28073359 PMCID: PMC5223343 DOI: 10.1186/s12931-016-0496-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 12/19/2016] [Indexed: 12/25/2022] Open
Abstract
Background Preinvasive squamous cell cancer (PSCC) are local transformations of bronchial epithelia that are frequently observed in current or former smokers. Their different grades and sizes suggest a continuum of dysplastic change with increasing severity, which may culminate in invasive squamous cell carcinoma (ISCC). As a consequence of the difficulty in isolating cancerous cells from biopsies, the molecular pathology that underlies their histological variability remains largely unknown. Method To address this issue, we have employed microdissection to isolate normal bronchial epithelia and cancerous cells from low- and high-grade PSCC and ISCC, from paraffin embedded (FFPE) biopsies and determined gene expression using Affymetric Human Exon 1.0 ST arrays. Tests for differential gene expression were performed using the Bioconductor package limma followed by functional analyses of differentially expressed genes in IPA. Results Examination of differential gene expression showed small differences between low- and high-grade PSCC but substantial changes between PSCC and ISCC samples (184 vs 1200 p-value <0.05, fc ±1.75). However, the majority of the differentially expressed PSCC genes (142 genes: 77%) were shared with those in ISCC samples. Pathway analysis showed that these shared genes are associated with DNA damage response, DNA/RNA metabolism and inflammation as major biological themes. Cluster analysis identified 12 distinct patterns of gene expression including progressive up or down-regulation across PSCC and ISCC. Pathway analysis of incrementally up-regulated genes revealed again significant enrichment of terms related to DNA damage response, DNA/RNA metabolism, inflammation, survival and proliferation. Altered expression of selected genes was confirmed using RT-PCR, as well as immunohistochemistry in an independent set of 45 ISCCs. Conclusions Gene expression profiles in PSCC and ISCC differ greatly in terms of numbers of genes with altered transcriptional activity. However, altered gene expression in PSCC affects canonical pathways and cellular and biological processes, such as inflammation and DNA damage response, which are highly consistent with hallmarks of cancer. Electronic supplementary material The online version of this article (doi:10.1186/s12931-016-0496-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | - Leo A H Zeef
- Faculty of Life Science, University of Manchester, Manchester, England, M13 9PT, UK
| | - Leena Joseph
- Department of Pathology, University Hospital of South Manchester, Manchester, England, M23 9LT, UK
| | - Keith Kerr
- Department of Pathology, University of Aberdeen, Aberdeen, Scotland, AB25 2ZD, UK
| | - John Gosney
- Department of Pathology, Royal Liverpool University Hospital, Liverpool, England, L7 8XP, UK
| | - Mark A Lindsay
- Department of Pharmacy and Pharmacology, University of Bath, Bath, England, BA 7AY, UK
| | - Richard Booton
- Manchester Thoracic Oncology Centre, University Hospital of South Manchester, Manchester, England, M23 9LT, UK.
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190
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Nguyen KH, Tong VT, Marynak KL, King BA. US Adults' Perceptions of the Harmful Effects During Pregnancy of Using Electronic Vapor Products Versus Smoking Cigarettes, Styles Survey, 2015. Prev Chronic Dis 2016; 13:E175. [PMID: 28005528 PMCID: PMC5201153 DOI: 10.5888/pcd13.160349] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
INTRODUCTION Research suggests aerosol from electronic vapor products (EVPs) has fewer harmful constituents than conventional cigarette smoke. Even so, EVPs and other nicotine-containing products are not safe to use during pregnancy. We examined perceptions among US adults regarding harm in using EVPs rather than smoking cigarettes during pregnancy. METHODS Data came from the 2015 Styles Survey, an Internet panel survey of a sample of US adults aged 18 years or older (N = 4,127). Perceived harm was assessed by asking respondents whether using EVPs was less, equally, or more harmful for pregnant women than smoking cigarettes. Descriptive statistics were used to estimate perceived harm overall and by sociodemographic characteristics and tobacco-use status. Perceived harm was assessed among all adults, women of reproductive age (18-44 years, n = 820), and women of nonreproductive age (≥45 years, n = 1,398). RESULTS Among all adults, 11.1% believed using EVPs during pregnancy was less harmful than smoking conventional cigarettes, 51.0% believed it was equally harmful, 11.6% believed it was more harmful, and 26.2% did not know. Prevalence of perception of less harm, by demographic category, was greatest among adults aged 18 to 24 years, men, non-Hispanic whites, adults with less than a high school diploma, current EVP users, and current cigarette smokers (P < .05). Prevalence of perception of less harm was greater among women of reproductive age (9.6%) than among those of nonreproductive age (7.9%) (P < .05). CONCLUSION US adults have varying levels of perceptions about the harms of EVP use versus cigarette smoking during pregnancy. Efforts are warranted to prevent nicotine exposure during pregnancy and to educate adults on the dangers of using any form of tobacco during pregnancy, including EVPs.
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Affiliation(s)
- Kimberly H Nguyen
- Office on Smoking and Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, 4770 Buford Highway, MS F-79. Atlanta, Georgia GA 30341.
| | - Van T Tong
- Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Kristy L Marynak
- Office on Smoking and Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Brian A King
- Office on Smoking and Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
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191
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Meng M, Liao H, Zhang B, Pan Y, Kong Y, Liu W, Yang P, Huo Z, Cao Z, Zhou Q. Cigarette smoke extracts induce overexpression of the proto-oncogenic gene interleukin-13 receptor α2 through activation of the PKA-CREB signaling pathway to trigger malignant transformation of lung vascular endothelial cells and angiogenesis. Cell Signal 2016; 31:15-25. [PMID: 27986643 DOI: 10.1016/j.cellsig.2016.12.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 12/03/2016] [Accepted: 12/12/2016] [Indexed: 01/23/2023]
Abstract
Cigarette smoking is a major cause of lung cancer. Tumor-associated endothelial cells (TAECs) play important roles in tumor angiogenesis and metastasis. However, whether cigarette smoking can trigger genesis of lung TAECs has not been reported yet. In the current study, we used lung endothelial cell (EC) lines as a model to study the pathological effect of cigarette smoke extracts (CSEs) on human lung ECs, and found that a lower dose of 4% CSEs obviously caused abnormal morphological changes in ECs, increased the permeability of endothelial monolayer, while a higher concentration of 8% CSEs caused EC apoptosis. Strikingly, CSEs induced a 117-fold overexpression of a pro-tumorigenic interleukin-13 receptor α2 gene (IL-13Rα2, also named as CT-19) through activation of the protein kinase A (PKA) and cAMP response element-binding protein (CREB) signaling pathway. A PKA specific inhibitor H89 completely abolished CSEs-induced IL-13Rα2 overexpression. The overexpression of IL-13Rα2 in lung ECs significantly increased the tumorigenic, migratory, and angiogenic capabilities of the cells, suggesting that IL-13Rα2 promotes genesis of lung TAECs. Together, our data show that CSEs activate the PKA, CREB, and IL-13Rα2 axis in lung ECs, and IL-13Rα2 promotes the malignant transformation of lung ECs and genesis of TAECs with robust angiogenic and oncogenic capabilities. Our study provides new insight into the mechanism of CSEs-triggered lung cancer angiogenesis and tumorigenesis, suggesting that the PKA-CREB-IL-13Rα2 axis is a potential target for novel anti-lung tumor angiogenesis and anti-lung cancer drug discovery.
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Affiliation(s)
- Mei Meng
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, 2011 Collaborative Innovation Center of Hematology, Soochow University, Suzhou, Jiangsu 215123, China
| | - Huaidong Liao
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, 2011 Collaborative Innovation Center of Hematology, Soochow University, Suzhou, Jiangsu 215123, China
| | - Bin Zhang
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, 2011 Collaborative Innovation Center of Hematology, Soochow University, Suzhou, Jiangsu 215123, China
| | - Yanyan Pan
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, 2011 Collaborative Innovation Center of Hematology, Soochow University, Suzhou, Jiangsu 215123, China
| | - Ying Kong
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, 2011 Collaborative Innovation Center of Hematology, Soochow University, Suzhou, Jiangsu 215123, China
| | - Wenming Liu
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, 2011 Collaborative Innovation Center of Hematology, Soochow University, Suzhou, Jiangsu 215123, China
| | - Ping Yang
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, 2011 Collaborative Innovation Center of Hematology, Soochow University, Suzhou, Jiangsu 215123, China
| | - Zihe Huo
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, 2011 Collaborative Innovation Center of Hematology, Soochow University, Suzhou, Jiangsu 215123, China
| | - Zhifei Cao
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, 2011 Collaborative Innovation Center of Hematology, Soochow University, Suzhou, Jiangsu 215123, China
| | - Quansheng Zhou
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, 2011 Collaborative Innovation Center of Hematology, Soochow University, Suzhou, Jiangsu 215123, China.
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Khan Z, Khan S, Christianson L, Rehman S, Ekwunife O, Samkange-Zeeb F. Smokeless Tobacco and Oral Potentially Malignant Disorders in South Asia: A Systematic Review and Meta-analysis. Nicotine Tob Res 2016; 20:12-21. [DOI: 10.1093/ntr/ntw310] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Accepted: 11/12/2016] [Indexed: 12/13/2022]
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193
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Makinson A, Reynes J. A novel marker of lung-cancer risk in people with HIV. Lancet HIV 2016; 4:e53-e55. [PMID: 27916583 DOI: 10.1016/s2352-3018(16)30218-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Accepted: 10/07/2016] [Indexed: 11/19/2022]
Affiliation(s)
- Alain Makinson
- University Montpellier, UMI233-IRD/U1175-INSERM, Montpellier, France; Infectious and Tropical Diseases Department, Montpellier University Hospital, Montpellier, France.
| | - Jacques Reynes
- University Montpellier, UMI233-IRD/U1175-INSERM, Montpellier, France; Infectious and Tropical Diseases Department, Montpellier University Hospital, Montpellier, France
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194
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Balansky R, La Maestra S, Micale RT, Iltcheva M, Kirov K, De Flora S. Modulation by Ethanol of Cigarette Smoke Clastogenicity in Cells of Adult Mice and of Transplacentally Exposed Fetuses. PLoS One 2016; 11:e0167239. [PMID: 27907070 PMCID: PMC5131976 DOI: 10.1371/journal.pone.0167239] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 11/10/2016] [Indexed: 11/20/2022] Open
Abstract
Cigarette smoke (CS) and ethanol (EtOH) are known to synergize in the causation of cancers of the upper aerodigestive tract and of the liver. Little is known about possible interactions between these agents in other organs. These premises prompted us to evaluate the clastogenic effects resulting from the inhalation for 3 weeks of mainstream CS and oral administration of EtOH, which were tested either individually or in combination in cells of adult BDF1 mice and their fetuses. CS exerted clastogenic effects in haematopoietic cells of adult male mice by increasing the frequency of micronucleated erythroid cells both in bone marrow and in peripheral blood as well as the frequency of micronucleated and polynucleated pulmonary alveolar macrophages. Likewise, exposure to CS of pregnant mice resulted in a clastogenic damage in maternal bone marrow cells and in the liver and peripheral blood of their fetuses. Under all experimental conditions, EtOH was consistently devoid of clastogenic effects when given alone. In adult mice, EtOH exhibited a mild stimulating effect on the clastogenicity of CS in haematopoietic cells, while an opposite effect was observed in the respiratory tract, where EtOH attenuated the cytogenetic alterations induced by CS in pulmonary alveolar macrophages. At variance with the mild synergism observed in haematopoietic cells of adult mice, EtOH inhibited the clastogenicity of CS in the liver and peripheral blood cells of transplacentally exposed fetuses. Therefore, the effects of EtOH in CS-exposed mice show different trends depending both on the life stage and on the cells analyzed.
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Affiliation(s)
| | | | | | | | | | - Silvio De Flora
- Department of Health Sciences, University of Genoa, Genoa, Italy
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195
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Ma B, Ruszczak C, Jain V, Khariwala SS, Lindgren B, Hatsukami DK, Stepanov I. Optimized Liquid Chromatography Nanoelectrospray-High-Resolution Tandem Mass Spectrometry Method for the Analysis of 4-Hydroxy-1-(3-pyridyl)-1-butanone-Releasing DNA Adducts in Human Oral Cells. Chem Res Toxicol 2016; 29:1849-1856. [PMID: 27618873 PMCID: PMC5148665 DOI: 10.1021/acs.chemrestox.6b00254] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Metabolic activation of the carcinogenic tobacco-specific N-nitrosamines leads to the formation of 4-hydroxy-1-(3-pyridyl)-1-butanone (HPB)-releasing DNA adducts. We recently developed a liquid chromatography (LC)-tandem mass spectrometry (MS/MS) method for the analysis of HPB-releasing DNA adducts in human oral cells. However, given the limited amounts of DNA that can be extracted from oral cells, higher sensitivity and selectivity are required for the reliable analysis of these adducts in future studies. We have developed a new sensitive LC-nanoelectrospray ionization-high-resolution MS/MS method for the analysis of HPB-releasing DNA adducts in oral cells. A new procedure was also developed for guanine analysis by LC-MS/MS. The detection limit of the developed assay is 5 amol, and the limit of quantitation is 0.35 fmol HPB on-column, starting with 50 pg of DNA. The method was tested by analyzing oral samples from 65 smokers, including 30 head and neck squamous cell carcinoma (HNSCC) patients and 35 cancer-free controls. In all smokers, the levels of HPB-releasing DNA adducts averaged 6.22 ± 16.18 pmol/mg DNA, with significant interindividual variation being consistent with previous reports. The median HPB-releasing DNA adduct level was 6.6 times greater for those with HNSCC than for smokers without HNSCC (p = 0.002). The developed highly sensitive and selective method is a valuable tool for future measurement of HPB-releasing DNA adducts in tobacco users, which can potentially provide critical insights for the identification of individuals at risk for cancer.
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Affiliation(s)
- Bin Ma
- Masonic Cancer Center, University of Minnesota
| | | | - Vipin Jain
- Masonic Cancer Center, University of Minnesota
| | - Samir S. Khariwala
- Masonic Cancer Center, University of Minnesota
- Department of Otolaryngology, Head and Neck Surgery, University of Minnesota
| | | | | | - Irina Stepanov
- Masonic Cancer Center, University of Minnesota
- Division of Environmental Health Sciences, University of Minnesota
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Xu J, Yang H, Jin B, Lou Y, Zhang Y, Zhang X, Zhong H, Wang H, Wu D, Han B. EGFR tyrosine kinase inhibitors versus chemotherapy as first-line therapy for non-small cell lung cancer patients with the L858R point mutation. Sci Rep 2016; 6:36371. [PMID: 27811976 PMCID: PMC5095672 DOI: 10.1038/srep36371] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 10/14/2016] [Indexed: 12/20/2022] Open
Abstract
The efficacy of EGFR tyrosine kinase inhibitors (TKIs) varies among different EGFR mutations. Here, we directly compared the efficacy of first-line TKIs to chemotherapy for non-small cell lung cancer (NSCLC) patients with the L858R mutation. The progression-free survival (PFS) for patients receiving TKIs as first-line therapy was longer than those who received chemotherapy (hazard ratio [HR]: 0.44, P < 0.001). Subgroup analyses showed that first-line TKI therapy resulted in longer PFS among non-smokers (HR: 0.41, P < 0.001), male (HR: 0.49, P = 0.002), female (HR: 0.39, P < 0.001), and patients with adenocarcinoma histology (HR: 0.41, P < 0.001). However, among patients with non-adenocarcinoma histology (HR: 1.11, P = 0.824) and those who used to smoke (HR: 0.55, P = 0.093), first-line TKI therapy failed to demonstrate statistically longer PFS compared to chemotherapy. Our results demonstrated that for patients with L858R mutation, first-line TKI therapy provided better survival benefits. However, among non-adenocarcinoma patients and those who used to smoke, the PFS in cohorts receiving first-line chemotherapy or TKI were not significantly different. The results of the current study will be helpful for decision-making in the treatment of patients with L858R mutation.
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Affiliation(s)
- Jianlin Xu
- Department of Pulmonary, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 230032, China
| | - Haitang Yang
- Department of Pathology, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 230032, China
| | - Bo Jin
- Department of Pulmonary, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 230032, China
| | - Yuqing Lou
- Department of Pulmonary, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 230032, China
| | - Yanwei Zhang
- Department of Pulmonary, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 230032, China
| | - Xueyan Zhang
- Department of Pulmonary, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 230032, China
| | - Hua Zhong
- Department of Pulmonary, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 230032, China
| | - Huiming Wang
- Department of Pulmonary, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 230032, China
| | - Dan Wu
- Central laboratory, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 230032, China
| | - Baohui Han
- Department of Pulmonary, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 230032, China
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Lack of effect of smoking status on axitinib pharmacokinetics in patients with non-small-cell lung cancer. Cancer Chemother Pharmacol 2016; 78:1131-1141. [PMID: 27783139 DOI: 10.1007/s00280-016-3164-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 10/06/2016] [Indexed: 10/20/2022]
Abstract
PURPOSE Axitinib, a tyrosine kinase inhibitor targeting vascular endothelial growth factor receptors 1-3, is approved for second-line treatment of advanced renal cell carcinoma. Axitinib is partially metabolized by cytochrome P450 1A2, which is induced by chronic heavy smoking. The effect of smoking on axitinib pharmacokinetics was evaluated in a non-small-cell lung cancer (NSCLC) patient population with a large number of active and ex-smokers. METHODS Data were pooled from six clinical studies-serial pharmacokinetics from two healthy volunteer studies (n = 58) and sparse pharmacokinetics from four NSCLC studies (n = 152)-for a nonlinear mixed effects modeling (NONMEM v7.2) analysis. Demographics, smoking status, liver and renal function status, and Eastern Cooperative Oncology Group performance status were tested as covariates. RESULTS There were 83 (40%) active smokers and 56 (27%) ex-smokers in the pooled dataset. Axitinib pharmacokinetics was adequately described with a linear, two-compartment model with a lagged first-order absorption. Final parameter estimates (inter-individual variability) were 16.1 L/h (59.1%) and 45.3 L (54.4%) for systemic clearance (CL) and central volume of distribution (Vc), respectively. Smoking status was found not to alter CL or Vc. Asian ethnicity and body weight were significant covariates for Vc, but were not considered clinically relevant since individual values of Vc for Asians were within the range of non-Asians. CONCLUSIONS Based on this analysis, smoking status does not affect area under plasma concentration-time curve, and thus no dose adjustment is required for smokers.
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198
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Song B, Shen M, Jiang D, Malla S, Mosa IM, Choudhary D, Rusling JF. Microfluidic array for simultaneous detection of DNA oxidation and DNA-adduct damage. Analyst 2016; 141:5722-5729. [PMID: 27517117 PMCID: PMC5048564 DOI: 10.1039/c6an01237j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Exposure to chemical pollutants and pharmaceuticals may cause health issues caused by metabolite-related toxicity. This paper reports a new microfluidic electrochemical sensor array with the ability to simultaneously detect common types of DNA damage including oxidation and nucleobase adduct formation. Sensors in the 8-electrode screen-printed carbon array were coated with thin films of metallopolymers osmium or ruthenium bipyridyl-poly(vinylpyridine) chloride (OsPVP, RuPVP) along with DNA and metabolic enzymes by layer-by-layer electrostatic assembly. After a reaction step in which test chemicals and other necessary reagents flow over the array, OsPVP selectively detects oxidized guanines on the DNA strands, and RuPVP detects DNA adduction by metabolites on nucleobases. We demonstrate array performance for test chemicals including 17β-estradiol (E2), its metabolites 4-hydroxyestradiol (4-OHE2), 2-hydroxyestradiol (2-OHE2), catechol, 2-nitrosotoluene (2-NO-T), 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK), and 2-acetylaminofluorene (2-AAF). Results revealed DNA-adduct and oxidation damage in a single run to provide a metabolic-genotoxic chemistry screen. The array measures damage directly in unhydrolyzed DNA, and is less expensive, faster, and simpler than conventional methods to detect DNA damage. The detection limit for oxidation is 672 8-oxodG per 106 bases. Each sensor requires only 22 ng of DNA, so the mass detection limit is 15 pg (∼10 pmol) 8-oxodG.
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Affiliation(s)
- Boya Song
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA.
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199
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Xu J, Ding G, Zhang X, Jin B, Lou Y, Zhang Y, Wang H, Wu D, Han B. The EGFR tyrosine kinase inhibitors as second-line therapy for EGFR wild-type non-small-cell lung cancer: a real-world study in People's Republic of China. Onco Targets Ther 2016; 9:6479-6484. [PMID: 27799795 PMCID: PMC5079695 DOI: 10.2147/ott.s119341] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Introduction Clinical evidence comparing chemotherapy and tyrosine kinase inhibitors (TKIs) as second-line therapy for epidermal growth factor receptor (EGFR) wild-type non-small-cell lung cancer (NSCLC) are conflicting. Methods We retrospectively reviewed stage IV EGFR wild-type NSCLC patients who relapsed on first-line chemotherapy at the Shanghai Chest Hospital to compare the efficacy of TKIs and chemotherapy as second-line therapy among different clinical subgroups. Results The progression-free survival (PFS) and overall survival for patients receiving chemotherapy as second-line therapy for NSCLC were longer than patients who received TKIs. The hazard ratios (HRs) were 0.40 (P<0.001) and 0.50 (P<0.001), respectively. Subgroup analyses showed that second-line TKI therapy resulted in inferior PFS among smokers (HR =0.24, P<0.001), males (HR =0.33, P<0.001), females (HR =0.54, P=0.004), and patients with adenocarcinoma (HR =0.48, P<0.001) and nonadenocarcinoma histology (HR =0.20, P<0.001). Among never-smokers, the PFS in cohorts receiving second-line chemotherapy or TKIs was not significantly different (HR =0.70, P=0.08). Conclusion These results suggest that EGFR TKI therapy was inferior compared to chemotherapy in EGFR wild-type NSCLC patients who relapsed from first-line chemotherapy; however, among never-smokers, these two treatment strategies were comparable.
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Affiliation(s)
- Jianlin Xu
- Department of Pulmonary, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Guozheng Ding
- Department of Pulmonary, Anqing Municipal Hospital, Anhui, People's Republic of China
| | - Xueyan Zhang
- Department of Pulmonary, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Bo Jin
- Department of Pulmonary, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Yuqing Lou
- Department of Pulmonary, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Yanwei Zhang
- Department of Pulmonary, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Huiming Wang
- Department of Pulmonary, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Dan Wu
- Central laboratory, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Baohui Han
- Department of Pulmonary, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, People's Republic of China
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Li F, Chen C, Ju T, Gao J, Yan J, Wang P, Xu Q, Hwu P, Du X, Lizée G. Rapid tumor regression in an Asian lung cancer patient following personalized neo-epitope peptide vaccination. Oncoimmunology 2016; 5:e1238539. [PMID: 28123873 PMCID: PMC5214696 DOI: 10.1080/2162402x.2016.1238539] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 09/11/2016] [Accepted: 09/13/2016] [Indexed: 12/31/2022] Open
Abstract
Personalized immunotherapy targeting tumor-specific mutations represents a highly promising approach to cancer treatment. Here, we describe an Asian lung squamous cell carcinoma patient demonstrating frank disease progression following chemotherapy and EGFR inhibitor treatment. Based on tumor mutational profiling and HLA typing, a saline-based multi-epitope peptide vaccine was designed and administered along with topical imiquimod as an adjuvant. Weekly neo-epitope peptide vaccination was followed by a rapid and dramatic regression of multiple lung tumor nodules, while a much larger liver metastasis remained refractory to treatment. Peripheral blood immune monitoring showed that specific cytotoxic T lymphocytes (CTLs) were induced primarily against peptide targets encompassing the widely shared EGFR L858R mutation, particularly one restricted to HLA-A*3101. Immunological targeting of this driver mutation may be of particular benefit to Asian lung cancer patients due to its relatively high prevalence within this patient population.
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Affiliation(s)
- Fenge Li
- Department of Gynecology, Tianjin First Center Hospital, Tianjin, China; Tianjin HengJia Biotechnology Development Co., Ltd, Tianjin, China
| | - Caixia Chen
- Department of Oncology, Tianjin Beichen Hospital , Tianjin, China
| | - Tao Ju
- Department of Oncology, Tianjin Beichen Hospital , Tianjin, China
| | - Junqin Gao
- Pathology Department, Tianjin Beichen Hospital , Tianjin, China
| | - Jun Yan
- Pathology Department, Tianjin First Center Hospital , Tianjin, China
| | - Peng Wang
- Regenerative Medicine Center, Third Central Hospital , Tianjin, China
| | - Qiang Xu
- GenomiCare Biotechnology Co. Ltd ., Shanghai, China
| | - Patrick Hwu
- Department of Melanoma Medical Oncology, University of Texas M.D. Anderson Cancer Center , Houston, TX, USA
| | - Xueming Du
- Department of Oncology, Tianjin Beichen Hospital , Tianjin, China
| | - Gregory Lizée
- Department of Melanoma Medical Oncology, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA; Department of Immunology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
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