1
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Pelos G, Riester M, Pal J, Myacheva K, Moneke I, Rotondo JC, Lübbert M, Diederichs S. Fast proliferating and slowly migrating non-small cell lung cancer cells are vulnerable to decitabine and retinoic acid combinatorial treatment. Int J Cancer 2024; 154:1029-1042. [PMID: 37947765 DOI: 10.1002/ijc.34783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 09/25/2023] [Accepted: 10/10/2023] [Indexed: 11/12/2023]
Abstract
Non-small cell lung cancer (NSCLC) patients are often elderly or unfit and thus cannot tolerate standard aggressive therapy regimes. In our study, we test the efficacy of the DNA-hypomethylating agent decitabine (DAC) in combination with all-trans retinoic acid (ATRA), which has been shown to possess little systemic adverse effects. Screening a broad panel of 56 NSCLC cell lines uncovered a decrease in cell viability after the combination treatment in 77% of the cell lines. Transcriptomics, proteomics, proliferation and migration profiling revealed that fast proliferating and slowly migrating cell lines were more sensitive to the drug combination. The comparison of mutational profiles found oncogenic KRAS mutations only in sensitive cells. Additionally, different cell lines showed a heterogeneous gene expression response to the treatment pointing to diverse mechanisms of action. Silencing KRAS, RIG-I or RARB partially reversed the sensitivity of KRAS-mutant NCI-H460 cells. To study resistance, we generated two NCI-H460 cell populations resistant to ATRA and DAC, which migrated faster and proliferated slower than the parental sensitive cells and showed signs of senescence. In summary, this comprehensive dataset uncovers a broad sensitivity of NSCLC cells to the combinatorial treatment with DAC and ATRA and indicates that migration and proliferation capacities correlate with and could thus serve as determinants for drug sensitivity in NSCLC.
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Affiliation(s)
- Giulia Pelos
- Division of Cancer Research, Department of Thoracic Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Marisa Riester
- Division of Cancer Research, Department of Thoracic Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Jagriti Pal
- Division of Cancer Research, Department of Thoracic Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Ksenia Myacheva
- Division of Cancer Research, Department of Thoracic Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK), Partner Site Freiburg, A Partnership Between DKFZ and University Medical Center Freiburg, Freiburg, Germany
| | - Isabelle Moneke
- Division of Cancer Research, Department of Thoracic Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - John Charles Rotondo
- Department of Internal Medicine I, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Michael Lübbert
- Department of Internal Medicine I, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Sven Diederichs
- Division of Cancer Research, Department of Thoracic Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK), Partner Site Freiburg, A Partnership Between DKFZ and University Medical Center Freiburg, Freiburg, Germany
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2
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Rai D, Pattnaik B, Bangaru S, Tak J, Kumari J, Verma U, Vadala R, Yadav G, Dhaliwal RS, Kumar S, Kumar R, Jain D, Luthra K, Chosdol K, Palanichamy JK, Khan MA, Surendranath A, Mittal S, Tiwari P, Hadda V, Madan K, Agrawal A, Guleria R, Mohan A. microRNAs in exhaled breath condensate for diagnosis of lung cancer in a resource-limited setting: a concise review. Breathe (Sheff) 2023; 19:230125. [PMID: 38351949 PMCID: PMC10862127 DOI: 10.1183/20734735.0125-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Accepted: 11/30/2023] [Indexed: 02/16/2024] Open
Abstract
Lung cancer is one of the common cancers globally with high mortality and poor prognosis. Most cases of lung cancer are diagnosed at an advanced stage due to limited diagnostic resources. Screening modalities, such as sputum cytology and annual chest radiographs, have not proved sensitive enough to impact mortality. In recent years, annual low-dose computed tomography has emerged as a potential screening tool for early lung cancer detection, but it may not be a feasible option for developing countries. In this context, exhaled breath condensate (EBC) analysis has been evaluated recently as a noninvasive tool for lung cancer diagnosis. The breath biomarkers also have the advantage of differentiating various types and stages of lung cancer. Recent studies have focused more on microRNAs (miRNAs) as they play a key role in tumourigenesis by regulating the cell cycle, metastasis and angiogenesis. In this review, we have consolidated the current published literature suggesting the utility of miRNAs in EBC for the detection of lung cancer.
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Affiliation(s)
- Divyanjali Rai
- Breathomics in Respiratory Diseases Lab, Department of Pulmonary, Critical Care and Sleep Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Bijay Pattnaik
- Breathomics in Respiratory Diseases Lab, Department of Pulmonary, Critical Care and Sleep Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Sunil Bangaru
- Breathomics in Respiratory Diseases Lab, Department of Pulmonary, Critical Care and Sleep Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Jaya Tak
- Breathomics in Respiratory Diseases Lab, Department of Pulmonary, Critical Care and Sleep Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Jyoti Kumari
- Breathomics in Respiratory Diseases Lab, Department of Pulmonary, Critical Care and Sleep Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Umashankar Verma
- Breathomics in Respiratory Diseases Lab, Department of Pulmonary, Critical Care and Sleep Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Rohit Vadala
- Breathomics in Respiratory Diseases Lab, Department of Pulmonary, Critical Care and Sleep Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Geetika Yadav
- Indian Council of Medical Research, New Delhi, India
| | | | - Sunil Kumar
- Department of Surgical Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - Rakesh Kumar
- Department of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Deepali Jain
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Kalpana Luthra
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Kunzang Chosdol
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | | | - Maroof Ahmad Khan
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| | - Addagalla Surendranath
- Breathomics in Respiratory Diseases Lab, Department of Pulmonary, Critical Care and Sleep Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Saurabh Mittal
- Breathomics in Respiratory Diseases Lab, Department of Pulmonary, Critical Care and Sleep Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Pawan Tiwari
- Breathomics in Respiratory Diseases Lab, Department of Pulmonary, Critical Care and Sleep Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Vijay Hadda
- Breathomics in Respiratory Diseases Lab, Department of Pulmonary, Critical Care and Sleep Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Karan Madan
- Breathomics in Respiratory Diseases Lab, Department of Pulmonary, Critical Care and Sleep Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Anurag Agrawal
- Trivedi School of Biosciences, Ashoka University, Sonipat, India
| | - Randeep Guleria
- Breathomics in Respiratory Diseases Lab, Department of Pulmonary, Critical Care and Sleep Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Anant Mohan
- Breathomics in Respiratory Diseases Lab, Department of Pulmonary, Critical Care and Sleep Medicine, All India Institute of Medical Sciences, New Delhi, India
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3
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Xu Y, Wu M, Ma S. Multidimensional molecular measurements-environment interaction analysis for disease outcomes. Biometrics 2022; 78:1542-1554. [PMID: 34213006 PMCID: PMC9366385 DOI: 10.1111/biom.13526] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 02/27/2021] [Accepted: 06/28/2021] [Indexed: 12/30/2022]
Abstract
Multiple types of molecular (genetic, genomic, epigenetic, etc.) measurements, environmental risk factors, and their interactions have been found to contribute to the outcomes and phenotypes of complex diseases. In each of the previous studies, only the interactions between one type of molecular measurement and environmental risk factors have been analyzed. In recent biomedical studies, multidimensional profiling, in which data from multiple types of molecular measurements are collected from the same subjects, is becoming popular. A myriad of recent studies have shown that collectively analyzing multiple types of molecular measurements is not only biologically sensible but also leads to improved estimation and prediction. In this study, we conduct an M-E interaction analysis, with M standing for multidimensional molecular measurements and E standing for environmental risk factors. This can accommodate multiple types of molecular measurements and sufficiently account for their overlapping as well as independent information. Extensive simulation shows that it outperforms several closely related alternatives. In the analysis of TCGA (The Cancer Genome Atlas) data on lung adenocarcinoma and cutaneous melanoma, we make some stable biological findings and achieve stable prediction.
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Affiliation(s)
- Yaqing Xu
- Department of Biostatistics, Yale School of Public Health, New Haven, Connecticut, USA
| | - Mengyun Wu
- School of Statistics and Management, Shanghai University of Finance and Economics, Shanghai, China
| | - Shuangge Ma
- Department of Biostatistics, Yale School of Public Health, New Haven, Connecticut, USA
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4
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Li L, Zou BJ, Zhao JZ, Liang JB, She ZY, Zhou WY, Lin SX, Tian L, Luo WJ, He FZ. A novel DNA damage repair-related signature for predicting prognositc and treatment response in non-small lung cancer. Front Oncol 2022; 12:961274. [PMID: 36408135 PMCID: PMC9673481 DOI: 10.3389/fonc.2022.961274] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 10/14/2022] [Indexed: 10/06/2023] Open
Abstract
DNA damage repair (DDR) is essential for maintaining genome integrity and modulating cancer risk, progression, and therapeutic response. DDR defects are common among non-small lung cancer (NSCLC), resulting in new challenge and promise for NSCLC treatment. Thus, a thorough understanding of the molecular characteristics of DDR in NSCLC is helpful for NSCLC treatment and management. Here, we systematically analyzed the relationship between DDR alterations and NSCLC prognosis, and successfully established and validated a six-DDR gene prognostic model via LASSO Cox regression analysis based on the expression of prognostic related DDR genes, CDC25C, NEIL3, H2AFX, NBN, XRCC5, RAD1. According to this model, NSCLC patients were classified into high-risk subtype and low-risk subtype, each of which has significant differences between the two subtypes in clinical features, molecular features, immune cell components, gene mutations, DDR pathway activation status and clinical outcomes. The high-risk patients was characterized with worse prognosis, lower proportion and number of DDR mutations, unique immune profile and responsive to immunetherapy. And the low-risk patients tend to have superior survival, while being less responsive to immunotherapy and more sensitive to treatment with DNA-damaging chemotherapy drugs. Overall, this molecular classification based on DDR expression profile enables hierarchical management of patients and personalized clinical treatment, and provides potential therapeutic targets for NSCLC.
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Affiliation(s)
- Ling Li
- Department of Pharmacy, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Bao-jia Zou
- Department of Hepatobiliary Surgery, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Juan-zhi Zhao
- Department of Pharmacy, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Jia-bi Liang
- Department of Pharmacy, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Zi-yue She
- Department of Pharmacy, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Wen-ying Zhou
- Department of Central Laboratory, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Si-xiao Lin
- Department of Central Laboratory, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Lin Tian
- Department of Pharmacy, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Wen-ji Luo
- Department of Pharmacy, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Fa-zhong He
- Department of Quality Control, Zhuhai People’s Hospital, Zhuhai Hospital Affiliated with Jinan University, Zhuhai, Guangdong, China
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5
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Kuang Y, Shen W, Zhu H, Huang H, Zhou Q, Yin W, Zhou Y, Cao Y, Wang L, Li X, Ren C, Jiang X. The role of lncRNA just proximal to XIST (JPX) in human disease phenotypes and RNA methylation: The novel biomarker and therapeutic target potential. Biomed Pharmacother 2022; 155:113753. [PMID: 36179492 DOI: 10.1016/j.biopha.2022.113753] [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: 08/10/2022] [Revised: 09/23/2022] [Accepted: 09/25/2022] [Indexed: 11/02/2022] Open
Abstract
Increasing evidence suggests that long non-coding RNAs (lncRNAs) are closely related to the initialization and development of human diseases. lncRNA just proximal to XIST (JPX), as a newly identified lncRNA, has been reported to be aberrantly expressed and associated with pathophysiological traits in numerous diseases, particularly cancers. More importantly, JPX has been proven to play important roles in various biological functions, including cell proliferation, migration, invasion, apoptosis, chemoresistance, and differentiation. In addition, we discuss the diverse molecular mechanisms and correlation with RNA methylation of JPX in several cancers. In this Review, we summarize current studies on JPX's roles in diseases and its potential application as a biomarker for both diagnoses and prognoses and a therapeutic target in human diseases.
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Affiliation(s)
- Yirui Kuang
- Department of Neurosurgery, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province 410008, China; Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, Hunan Province 410008, China
| | - Wenyue Shen
- Department of Neurosurgery, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province 410008, China; Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, Hunan Province 410008, China
| | - Hecheng Zhu
- Changsha Kexin Cancer Hospital, Changsha, Hunan Province 410205, China
| | - Haoxuan Huang
- Department of Neurosurgery, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province 410008, China; Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, Hunan Province 410008, China
| | - Quanwei Zhou
- Department of Neurosurgery, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province 410008, China; Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, Hunan Province 410008, China
| | - Wen Yin
- Department of Neurosurgery, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province 410008, China; Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, Hunan Province 410008, China
| | - Yi Zhou
- Department of Neurosurgery, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province 410008, China; Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, Hunan Province 410008, China
| | - Yudong Cao
- Department of Neurosurgery, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province 410008, China; Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, Hunan Province 410008, China
| | - Lei Wang
- Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, Hunan Province 410008, China; The NHC Key Laboratory of Carcinogenesis and The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, Hunan Province 410078, China
| | - Xuewen Li
- Changsha Kexin Cancer Hospital, Changsha, Hunan Province 410205, China
| | - Caiping Ren
- Department of Neurosurgery, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province 410008, China; Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, Hunan Province 410008, China; The NHC Key Laboratory of Carcinogenesis and The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, Hunan Province 410078, China.
| | - Xingjun Jiang
- Department of Neurosurgery, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province 410008, China.
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6
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Ren Y, Cao L, You M, Ji J, Gong Y, Ren H, Xu F, Guo H, Hu J, Li Z. “SMART” digital nucleic acid amplification technologies for lung cancer monitoring from early to advanced stages. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116774] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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7
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Antitumor Activity against A549 Cancer Cells of Three Novel Complexes Supported by Coating with Silver Nanoparticles. Int J Mol Sci 2022; 23:ijms23062980. [PMID: 35328401 PMCID: PMC8950742 DOI: 10.3390/ijms23062980] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 02/28/2022] [Accepted: 03/07/2022] [Indexed: 12/26/2022] Open
Abstract
A novel biologically active organic ligand L (N’-benzylidenepyrazine-2-carbohydrazonamide) and its three coordination compounds have been synthesized and structurally described. Their physicochemical and biological properties have been thoroughly studied. Cu(II), Zn(II), and Cd(II) complexes have been analyzed by F-AAS spectrometry and elemental analysis. The way of metal–ligand coordination was discussed based on FTIR spectroscopy and UV-VIS-NIR spectrophotometry. The thermal behavior of investigated compounds was studied in the temperature range 25–800 °C. All compounds are stable at room temperature. The complexes decompose in several stages. Magnetic studies revealed strong antiferromagnetic interaction. Their cytotoxic activity against A549 lung cancer cells have been studied with promising results. We have also investigated the biological effect of coating studied complexes with silver nanoparticles. The morphology of the surface was studied using SEM imaging.
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8
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Ma C, Wu M, Ma S. Analysis of cancer omics data: a selective review of statistical techniques. Brief Bioinform 2022; 23:6510158. [PMID: 35039832 DOI: 10.1093/bib/bbab585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 12/19/2021] [Accepted: 12/20/2021] [Indexed: 11/13/2022] Open
Abstract
Cancer is an omics disease. The development in high-throughput profiling has fundamentally changed cancer research and clinical practice. Compared with clinical, demographic and environmental data, the analysis of omics data-which has higher dimensionality, weaker signals and more complex distributional properties-is much more challenging. Developments in the literature are often 'scattered', with individual studies focused on one or a few closely related methods. The goal of this review is to assist cancer researchers with limited statistical expertise in establishing the 'overall framework' of cancer omics data analysis. To facilitate understanding, we mainly focus on intuition, concepts and key steps, and refer readers to the original publications for mathematical details. This review broadly covers unsupervised and supervised analysis, as well as individual-gene-based, gene-set-based and gene-network-based analysis. We also briefly discuss 'special topics' including interaction analysis, multi-datasets analysis and multi-omics analysis.
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Affiliation(s)
- Chenjin Ma
- College of Statistics and Data Science, Faculty of Science, Beijing University of Technology, Beijing, China
| | - Mengyun Wu
- School of Statistics and Management, Shanghai University of Finance and Economics, Shanghai, China
| | - Shuangge Ma
- Department of Biostatistics, Yale School of Public Health, New Haven, CT, USA
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9
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Fei Z, Zheng Q, Hong HG, Li Y. Inference for High-Dimensional Censored Quantile Regression. J Am Stat Assoc 2021. [DOI: 10.1080/01621459.2021.1957900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Zhe Fei
- Department of Biostatistics, University of California, Los Angeles, CA
| | - Qi Zheng
- Department of Bioinformatics and Biostatistics, University of Louisville, KY
| | - Hyokyoung G. Hong
- Department of Statistics and Probability, Michigan State University, East Lansing, MI
| | - Yi Li
- Department of Biostatistics, University of Michigan, Ann Arbor, MI
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10
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Gao Y, Song F, Zhang P, Liu J, Cui J, Ma Y, Zhang G, Luo J. Improving the Subtype Classification of Non-small Cell Lung Cancer by Elastic Deformation Based Machine Learning. J Digit Imaging 2021; 34:605-617. [PMID: 33963422 PMCID: PMC8329138 DOI: 10.1007/s10278-021-00455-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 01/06/2021] [Accepted: 04/27/2021] [Indexed: 01/02/2023] Open
Abstract
Non-invasive image-based machine learning models have been used to classify subtypes of non-small cell lung cancer (NSCLC). However, the classification performance is limited by the dataset size, because insufficient data cannot fully represent the characteristics of the tumor lesions. In this work, a data augmentation method named elastic deformation is proposed to artificially enlarge the image dataset of NSCLC patients with two subtypes (squamous cell carcinoma and large cell carcinoma) of 3158 images. Elastic deformation effectively expanded the dataset by generating new images, in which tumor lesions go through elastic shape transformation. To evaluate the proposed method, two classification models were trained on the original and augmented dataset, respectively. Using augmented dataset for training significantly increased classification metrics including area under the curve (AUC) values of receiver operating characteristics (ROC) curves, accuracy, sensitivity, specificity, and f1-score, thus improved the NSCLC subtype classification performance. These results suggest that elastic deformation could be an effective data augmentation method for NSCLC tumor lesion images, and building classification models with the help of elastic deformation has the potential to serve for clinical lung cancer diagnosis and treatment design.
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Affiliation(s)
- Yang Gao
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China
| | - Fan Song
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100083, China
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Peng Zhang
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100083, China
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Jian Liu
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100083, China
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Jingjing Cui
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100083, China
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Yingying Ma
- Medical Engineering Management Office, Shandong Provincial Hospital Affiliated To Shandong University, Jinan, 250021, China
| | - Guanglei Zhang
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100083, China.
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.
| | - Jianwen Luo
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China.
- Center for Biomedical Imaging Research, Tsinghua University, Beijing, China.
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11
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LSD1 as a Biomarker and the Outcome of Its Inhibitors in the Clinical Trial: The Therapy Opportunity in Tumor. JOURNAL OF ONCOLOGY 2021; 2021:5512524. [PMID: 33833800 PMCID: PMC8018836 DOI: 10.1155/2021/5512524] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 03/04/2021] [Accepted: 03/10/2021] [Indexed: 01/06/2023]
Abstract
Tumors are the foremost cause of death worldwide. As a result of that, there has been a significant enhancement in the investigation, treatment methods, and good maintenance practices on cancer. However, the sensitivity and specificity of a lot of tumor biomarkers are not adequate. Hence, it is of inordinate significance to ascertain novel biomarkers to forecast the prognosis and therapy targets for tumors. This review characterized LSD1 as a biomarker in different tumors. LSD1 inhibitors in clinical trials were also discussed. The recent pattern advocates that LSD1 is engaged at sauce chromatin zones linking with complexes of multi-protein having an exact DNA-binding transcription factor, establishing LSD1 as a favorable epigenetic target, and also gives a large selection of therapeutic targets to treat different tumors. This review sturdily backing the oncogenic probable of LSD1 in different tumors indicated that LSD1 levels can be used to monitor and identify different tumors and can be a useful biomarker of progression and fair diagnosis in tumor patients. The clinical trials showed that inhibitors of LSD1 have growing evidence of clinical efficacy which is very encouraging and promising. However, for some of the inhibitors such as GSK2879552, though selective, potent, and effective, its disease control was poor as the rate of adverse events (AEs) was high in tumor patients causing clinical trial termination, and continuation could not be supported by the risk-benefit profile. Therefore, we propose that, to attain excellent clinical results of inhibitors of LSD1, much attention is required in designing appropriate dosing regimens, developing in-depth in vitro/in vivo mechanistic works of LSD1 inhibitors, and developing inhibitors of LSD1 that are reversible, safe, potent, and selective which may offer safer profiles.
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12
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Abolfathi H, Sheikhpour M, Mohammad Soltani B, Fahimi H. The comparison and evaluation of the miR-16, miR-155 and miR-146a expression pattern in the blood of TB and NSCLC patients: A Research paper. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2020.100967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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13
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Mortezaei Z, Khosravi A. New potential anticancer drug-like compounds for squamous cell lung cancer using transcriptome network analysis. INFORMATICS IN MEDICINE UNLOCKED 2021. [DOI: 10.1016/j.imu.2021.100599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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14
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Kim MJ, Chen G, Sica GL, Deng X. Epigenetic modulation of FBW7/Mcl-1 pathway for lung cancer therapy. Cancer Biol Ther 2020; 22:55-65. [PMID: 33336620 DOI: 10.1080/15384047.2020.1856756] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Methylation induces epigenetic silencing of tumor suppressor genes in human lung cancer. Inhibition of DNA methyltransferases by decitabine (DAC) can demethylate and activate epigenetically silenced tumor suppressor genes. Epigenetic therapy using DAC should be an attractive strategy for lung cancer therapy. FBW7 is a tumor suppressor that functions as an Mcl-1 E3 ligase to degrade Mcl-1 by ubiquitination. Here we discovered that treatment of various human lung cancer cells with DAC resulted in activation of FBW7 expression, decreased levels of Mcl-1 protein, and growth inhibition. DAC-activated FBW7 expression promoted Mcl-1 ubiquitination and degradation leading to a significant reduction in the half-life of Mcl-1 protein. Mechanistically, treatment of lung cancer cells or lung cancer xenografts with DAC induced the conversion of the FBW7 gene from a methylated form to an unmethylated form, which was associated with the increased expression of FBW7 and decreased expression of Mcl-1 in vitro and in vivo. DAC suppressed lung cancer growth in a dose-dependent manner in vivo. Combined treatment with DAC and a Bcl2 inhibitor, venetoclax, exhibited strong synergistic potency against lung cancer without normal tissue toxicity. These findings uncover a novel mechanism by which DAC suppresses tumor growth by targeting the FBW7/Mcl-1 signaling pathway. Combination of DAC with Bcl2 inhibitor venetoclax provides more effective epigenetic therapy for lung cancer.
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Affiliation(s)
- Mi Jeong Kim
- Department of Radiation Oncology, Emory University School of Medicine and Winship Cancer Institute of Emory University , Atlanta, Georgia, USA.,Department of Food and Nutrition, Changwon National University , Gyeongsangnam-do, Korea
| | - Guo Chen
- Department of Radiation Oncology, Emory University School of Medicine and Winship Cancer Institute of Emory University , Atlanta, Georgia, USA
| | - Gabriel L Sica
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine and Winship Cancer Institute of Emory University , Atlanta, Georgia, USA
| | - Xingming Deng
- Department of Radiation Oncology, Emory University School of Medicine and Winship Cancer Institute of Emory University , Atlanta, Georgia, USA
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Epigenetic Silencing of LMX1A Contributes to Cancer Progression in Lung Cancer Cells. Int J Mol Sci 2020; 21:ijms21155425. [PMID: 32751497 PMCID: PMC7432919 DOI: 10.3390/ijms21155425] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/16/2020] [Accepted: 07/27/2020] [Indexed: 12/15/2022] Open
Abstract
Epigenetic modification is considered a major mechanism of the inactivation of tumor suppressor genes that finally contributes to carcinogenesis. LIM homeobox transcription factor 1α (LMX1A) is one of the LIM-homeobox-containing genes that is a critical regulator of growth and differentiation. Recently, LMX1A was shown to be hypermethylated and functioned as a tumor suppressor in cervical cancer, ovarian cancer, and gastric cancer. However, its role in lung cancer has not yet been clarified. In this study, we used public databases, methylation-specific PCR (MSP), reverse transcription PCR (RT-PCR), and bisulfite genomic sequencing to show that LMX1A was downregulated or silenced due to promoter hypermethylation in lung cancers. Treatment of lung cancer cells with the demethylating agent 5-aza-2'-deoxycytidine restored LMX1A expression. In the lung cancer cell lines H23 and H1299, overexpression of LMX1A did not affect cell proliferation but suppressed colony formation and invasion. These suppressive effects were reversed after inhibition of LMX1A expression in an inducible expression system in H23 cells. The quantitative RT-PCR (qRT-PCR) data showed that LMX1A could modulate epithelial mesenchymal transition (EMT) through E-cadherin (CDH1) and fibronectin (FN1). NanoString gene expression analysis revealed that all aberrantly expressed genes were associated with processes related to cancer progression, including angiogenesis, extracellular matrix (ECM) remodeling, EMT, cancer metastasis, and hypoxia-related gene expression. Taken together, these data demonstrated that LMX1A is inactivated through promoter hypermethylation and functions as a tumor suppressor. Furthermore, LMX1A inhibits non-small cell lung cancer (NSCLC) cell invasion partly through modulation of EMT, angiogenesis, and ECM remodeling.
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16
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Kezeminasab S, Emamalizadeh B, Khoubnasabjafari M, Jouyban A. Exhaled Breath Condensate: A Non-Invasive Source for Tracking of Genetic and Epigenetic Alterations in Lung Diseases. PHARMACEUTICAL SCIENCES 2020. [DOI: 10.34172/ps.2020.46] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Lung diseases have been recognized as an extensive cause of morbidity and mortality in the worldwide. The high degree of clinical heterogeneity and nonspecific initial symptoms of lung diseases contribute to a delayed diagnosis. So, the molecular and genomic profiling play a pivotal role in promoting the pulmonary diseases. Exhaled breath condensate (EBC) as a novel and potential method for sampling the respiratory epithelial lining fluid is to assess the inflammatory and oxidative stress biomarkers, drugs and genetic alterations in the pathophysiologic processes of lung diseases. The recent studies on the analysis of EBC from both a genetic and epigenetic point of view were searched from database and reviewed. This review provides an overview of the current findings in the tracking of genomic and epigenetic alterations which are potentially effective in better management of cancer detection. In addition, respiratory microbiota DNA using EBC samples in association with pulmonary disease especially lung cancer were investigated. Various studies have concluded that EBC has a great potential for analysis of nuclear and mitochondrial DNA alterations as well as epigenetic modifications and identification of respiratory microbiome. Next-generation sequencing (NGS) based genomic profiling of EBC samples is recommended as a promising approach to establish personalized based prevention, diagnosis, treatment and post-treatment follow-ups for patients with lung diseases especially lung cancer.
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Affiliation(s)
- Somayeh Kezeminasab
- Pharmaceutical Analysis Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Babak Emamalizadeh
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Maryam Khoubnasabjafari
- Tuberculosis and Lung Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Abolghasem Jouyban
- Pharmaceutical Analysis Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
- Kimia Idea Pardaz Azerbaijan (KIPA) Science-Based Company, Tabriz University of Medical Sciences, Tabriz, Iran
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17
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Li C, Lei Z, Peng B, Zhu J, Chen L. LncRNA HCP5 Stimulates the Proliferation of Non-Small Cell Lung Cancer Cells by Up-Regulating Survivin Through the Down-Regulation of miR-320. Cancer Manag Res 2020; 12:1129-1134. [PMID: 32104093 PMCID: PMC7028385 DOI: 10.2147/cmar.s222221] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Accepted: 10/10/2019] [Indexed: 12/25/2022] Open
Abstract
Introduction We explored the roles of lncRNA HCP5 in non-small cell lung cancer (NSCLC). Methods Levels of HCP5 were measured by performing qPCR and data were compared between non-tumor and NSCLC tissue samples by performing a paired t-test. Expression levels of miR-320 and survivin mRNA in NSCLC tissues were also measured by performing qPCR. The effects of HCP5, miR-320 and survivin overexpression on the proliferation of H23 cells were analyzed by cell proliferation assay. Results We found that HCP5 was up-regulated in NSCLC and predicted the poor survival of NSCLC patients. HCP5 was negatively correlated with miR-320 but positively correlated with survivin in NSCLC tissues. In NSCLC cells, HCP5 overexpression led to the up-regulated survivin and down-regulated miR-320. Moreover, miR-320 overexpression failed to affect HCP5 but down-regulated survivin. Cell proliferation assay showed that HCP5 and survivin overexpression led to increased, while miR-320 overexpression led to decreased cell proliferation rate. In addition, miR-320 overexpression reduced the effects of HCP5 overexpression. Conclusion Therefore, HCP5 may stimulate the proliferation of NSCLC cells by up-regulating survivin through the down-regulation of miR-320.
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Affiliation(s)
- Chao Li
- Oncology Department, Second People's Hospital of Jingmen, Jingmen City, Hubei Province 448000, People's Republic of China
| | - Zhang Lei
- Department of Oncology, The Central Hospital of Wuhan Affiliated to Tongji Medical College, Huazhong University of Science and Technology, Wuhan City, Hubei Province 430061, People's Republic of China
| | - Bin Peng
- Oncology Department, Second People's Hospital of Jingmen, Jingmen City, Hubei Province 448000, People's Republic of China
| | - Jiang Zhu
- Oncology Department, Second People's Hospital of Jingmen, Jingmen City, Hubei Province 448000, People's Republic of China
| | - Li Chen
- Department of Traditional Chinese Medicine, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Art and Science, Xiangyang City, Hubei Province 441021, People's Republic of China
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18
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Li F, Hu Q, Pang Z, Xu X. LncRNA MAGI2-AS3 Upregulates Cytokine Signaling 1 by Sponging miR-155 in Non-Small Cell Lung Cancer. Cancer Biother Radiopharm 2020; 35:72-76. [PMID: 31910343 DOI: 10.1089/cbr.2019.2898] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Background: MAGI2-AS3 has been reported to be a tumor suppressor in breast cancer and bladder cancer. This study analyzed the role of MAGI2-AS3 in non-small cell lung cancer (NSCLC). Results: The authors found that MAGI2-AS3 and suppressor of cytokine signaling 1 (SOCS-1) were both downregulated in NSCLC. MAGI2-AS3 and SOCS-1 were significantly and positively correlated in NSCLC tumor tissues. During follow-up, low levels of MAGI2-AS3 and SOCS-1 were found to be significantly correlated with patients' poor survival. In NSCLC cells, MAGI2-AS3 overexpression mediated the upregulated, while miR-155 expression mediated the downregulated SOCS-1 overexpression. RNA binding analysis showed that MAGI2-AS3 may be a sponge of miR-155. Cell proliferation revealed decreased cell proliferation rate of NSCLC cells after MAGI2-AS3 and SOCS-1 overexpression. MiR-155 played an opposite role and reduced the effects of MAGI2-AS3 overexpression. Conclusion: Therefore, MAGI2-AS3 upregulates cytokine signaling 1 by sponging miR-155 to inhibit NSCLC cell proliferation.
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Affiliation(s)
- Feng Li
- Department of Thoracic Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Qing Hu
- Department of Thoracic Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Zhonghao Pang
- Department of Thoracic Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Xiuquan Xu
- Pharmacy School of Jiangsu University, Zhenjiang, China
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19
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Dong S, Li W, Wang L, Hu J, Song Y, Zhang B, Ren X, Ji S, Li J, Xu P, Liang Y, Chen G, Lou JT, Yu W. Histone-Related Genes Are Hypermethylated in Lung Cancer and Hypermethylated HIST1H4F Could Serve as a Pan-Cancer Biomarker. Cancer Res 2019; 79:6101-6112. [PMID: 31575549 DOI: 10.1158/0008-5472.can-19-1019] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 07/24/2019] [Accepted: 09/27/2019] [Indexed: 11/16/2022]
Abstract
Lung cancer is the leading cause of cancer-related deaths worldwide. Cytologic examination is the current "gold standard" for lung cancer diagnosis, however, this has low sensitivity. Here, we identified a typical methylation signature of histone genes in lung cancer by whole-genome DNA methylation analysis, which was validated by The Cancer Genome Atlas (TCGA) lung cancer cohort (n = 907) and was further confirmed in 265 bronchoalveolar lavage fluid samples with specificity and sensitivity of 96.7% and 87.0%, respectively. More importantly, HIST1H4F was universally hypermethylated in all 17 tumor types from TCGA datasets (n = 7,344), which was further validated in nine different types of cancer (n = 243). These results demonstrate that HIST1H4F can function as a universal-cancer-only methylation (UCOM) marker, which may aid in understanding general tumorigenesis and improve screening for early cancer diagnosis. SIGNIFICANCE: These findings identify a new biomarker for cancer detection and show that hypermethylation of histone-related genes seems to persist across cancers.
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Affiliation(s)
- Shihua Dong
- Shanghai Public Health Clinical Center and Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute and Laboratory of RNA Epigenetics, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Wei Li
- Shanghai Public Health Clinical Center and Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute and Laboratory of RNA Epigenetics, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Lin Wang
- Department of Laboratory Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Jie Hu
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yuanlin Song
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Baolong Zhang
- Shanghai Public Health Clinical Center and Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute and Laboratory of RNA Epigenetics, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xiaoguang Ren
- Shanghai Public Health Clinical Center and Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute and Laboratory of RNA Epigenetics, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Shimeng Ji
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jin Li
- Shanghai Public Health Clinical Center and Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute and Laboratory of RNA Epigenetics, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Peng Xu
- Shanghai Public Health Clinical Center and Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute and Laboratory of RNA Epigenetics, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Ying Liang
- Shanghai Public Health Clinical Center and Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute and Laboratory of RNA Epigenetics, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Gang Chen
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jia-Tao Lou
- Department of Laboratory Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China.
| | - Wenqiang Yu
- Shanghai Public Health Clinical Center and Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute and Laboratory of RNA Epigenetics, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China.
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20
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Sheikhpour M, Sadeghizadeh M, Yazdian F, Mansoori A, Asadi H, Movafagh A, Shahraeini SS. Co-Administration of Curcumin and Bromocriptine Nano-liposomes for Induction of Apoptosis in Lung Cancer Cells. IRANIAN BIOMEDICAL JOURNAL 2019. [PMID: 31454860 PMCID: PMC6900482 DOI: 10.29252/ibj.24.1.24] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Background: In recent years, nanotechnology with modern advances in the macromolecular design of nano-carriers has proved to be helpful in the development of drugs delivery systems. This research represents a novel co-administration of nano-vehicles, known as liposomes. Liposomes efficiently encapsulate curcumin and BR in a polymer structure, which results in enhanced aqueous solubility of the mentioned hydrophobic agents and higher bioavailability of the drugs. Methods: Preparation of curcumin and BR liposomes were carried out by the thin film method, and the amounts of purified drug and its release were analyzed. After dose determination, the human lung cancer cells (QU-DB) were exposed to BR and curcumin liposomes for 12, 24, and 48 h. Then the viability and apoptosis assays were carried out by using MTT and flow cytometry technique, respectively. Results: In this research, in vitro anti-cancer effects of former nano-formulations on lung cancer cells was confirmed, and no cytotoxicity effects of these nano-preparations were observed in the normal cells (HFLF-PI5). Conclusion: Our findings suggest the nano-liposomal drugs as effective anti-cancer agents; however, additional clinical examinations are required.
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Affiliation(s)
- Mojgan Sheikhpour
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran.,Microbiology Research Center (MRC), Pasteur Institute of Iran, Tehran, Iran
| | - Majid Sadeghizadeh
- Department of Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Fatemeh Yazdian
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - Ali Mansoori
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - Hassan Asadi
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran.,Microbiology Research Center (MRC), Pasteur Institute of Iran, Tehran, Iran
| | - Abolfazl Movafagh
- Department of Medical Genetics, Cancer Research Center, Shohada Hospital School of Medicine, Shahid Beheshti University of Medical Science, Tehran, Iran
| | - Seyed Sadegh Shahraeini
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran.,Microbiology Research Center (MRC), Pasteur Institute of Iran, Tehran, Iran
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21
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Razavi SA, Rahimi B, Gholipour N, Ahangari F, Ahangari G. Serotonin (5HTR2A and 5HTR3A) and GABA (GABAB) Receptor Genes Overexpression are Correlated with Non-small Cell Lung Cancer (NSCLC). CURRENT CANCER THERAPY REVIEWS 2019. [DOI: 10.2174/1573394714666180626155751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Lung cancer is one of the main causes of cancer mortality in both men
and women. Up to 80% of lung cancers are Non-small-cell lung cancer (NSCLC). With regards to
the role of serotonin, as an autocrine growth factor for small-cell lung cancer cells and gammaaminobutyric
acid (GABA) and its receptors as a regulator in many types of cancers; the current
study was conducted to investigate the expression of serotonin and GABA gene receptors in lung
cancer patients.
Methods:
Relative gene expression of two 5-hydroxytryptamine subtypes (5HTR2A and 5-HTR3A)
and GABAB receptor was measured by quantitative polymerase chain reaction in peripheral blood
mononuclear cell (PBMC) from 30 NSCLC patients visited in Imam Khomeini hospital, Tehran
and 30 healthy controls.
Results:
Our results demonstrated that the expression of 5HTR3A, 5HTR2A and GABAB R genes
was significantly higher in patients compared to the healthy individuals.
Conclusion:
According to our findings, 5-HT and GABA may be involved in the regulation of
tumorigenesis via their receptors, thus playing an important role in lung cancer.
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Affiliation(s)
- Seyed A. Razavi
- Neuroimmunopsychooncogenetic Group, Medical Genetic Department, Faculty of Medical Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Besharat Rahimi
- Advanced Thoracic Research Center, Imam Khomeini Hospital, Tehran University of Medical Science, Tehran, Iran
| | - Naghmeh Gholipour
- Neuroimmunopsychooncogenetic Group, Medical Genetic Department, Faculty of Medical Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Fatemeh Ahangari
- Department of Medical Laboratory, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ghasem Ahangari
- Neuroimmunopsychooncogenetic Group, Medical Genetic Department, Faculty of Medical Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
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Wang J, Zhao Y, Xu H, Ma J, Liang F, Zou Q, Lin F. Silencing NID2 by DNA Hypermethylation Promotes Lung Cancer. Pathol Oncol Res 2019; 26:801-811. [PMID: 30826972 DOI: 10.1007/s12253-019-00609-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Accepted: 01/22/2019] [Indexed: 12/16/2022]
Abstract
To characterize the DNA methylation as well as exploring the relationship between NID2 methylation and the lung cancer development. Collecting chip data of 9 lung cancer samples and 11 adjacent normal samples from the Gene Expression Omnibus database. Tissues and cells NID2 gene methylation level was measured by methylation-specific PCR. NID2 mRNA level and protein level were validated by Real-Time PCR and Western blot separately. Functional study of lung cancer cells was performed with Cell Counting Kit-8 assay. Colony formation assay, transwell assay, wound healing assay and low cytometry were performed. Finally, NID2 tumorigenesis in vivo was tested in nude mice xenograft models. Microarray analysis outcome present NID2 hypermethylation status in lung cancer tissues. High methylation and low mRNA expression levels of NID2 were detected. After NID2 demethylation or overexpression in cancer cells, cell viability, proliferation, migration as well as invasion ability decreased. Nevertheless, a significant enhancement in apoptosis rate were observed. Overexpressing NID2 or demethylation in lung cancer cells inhibited the tumorigenesis of lung cancer in nude mice. The mRNA and protein level of NID2 in tumors obtained from nude mice xenograft were unanimous with the in vitro assays' outcome, which significantly decreased after overexpressing NID2 or demethylation. NID2 methylation reduces its expression level and promotes the development of lung cancer.
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Affiliation(s)
- Jianfeng Wang
- Department of Radiotherapy, China-Japan Union Hospital of Jilin University, Changchun, Jilin, 130031, China
| | - Yan Zhao
- Medical Examination Center, The Second Hospital of Jilin University, Changchun, Jilin, 130021, China
| | - Hongyan Xu
- Department of Oncology, Jilin Second People's Hospital, Jilin, 132011, Jilin, China
| | - Jun Ma
- Department of Radiotherapy, The Affiliated Hospital of Beihua University, Jilin, 132011, Jilin, China
| | - Feihai Liang
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Guangxi Medical University, Nanning, 530007, Guangxi, China
| | - Qingxu Zou
- Department of Thoracic Surgery, China-Japan Union Hospital of Jilin University, No. 126 freedom Avenue, Changchun, Jilin, 130031, China
| | - Fengwu Lin
- Department of Thoracic Surgery, China-Japan Union Hospital of Jilin University, No. 126 freedom Avenue, Changchun, Jilin, 130031, China.
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Gao X, Gào X, Zhang Y, Holleczek B, Schöttker B, Brenner H. Oxidative stress and epigenetic mortality risk score: associations with all-cause mortality among elderly people. Eur J Epidemiol 2019; 34:451-462. [PMID: 30771035 DOI: 10.1007/s10654-019-00493-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 02/07/2019] [Indexed: 12/21/2022]
Abstract
Oxidative stress (OS) has been found to be related to accelerated aging and many aging-related health outcomes. Recently, an epigenetic "mortality risk score" (MS) based on whole blood DNA methylation at 10 mortality-related CpG sites has been demonstrated to be associated with all-cause mortality. This study aimed to address the association between OS and MS, and to assess and compare their performance in the prediction of all-cause mortality. For 1448 participants aged 50-75 of the German ESTHER cohort study, the MS was derived from the DNA methylation profiles measured by Illumina HumanMethylation450K Beadchip and the levels of two urinary OS markers, 8-isoprostane (8-iso) and oxidized guanine/guanosine [including 8-hydroxy-2'-deoxyguanosine (8-oxo)], were measured by ELISA kits. Associations between OS markers and the MS were evaluated by linear and ordinal logistic regression models, and their associations with all-cause mortality were examined by Cox regression models. Both OS markers were associated with the MS at baseline. The 8-iso levels and MS, but not 8-oxo levels, were associated with all-cause mortality during a median follow-up of 15.1 years. Fully-adjusted hazard ratios (95% CI) were 1.56 (1.13-2.16) for the 4th quartile of 8-iso levels compared with the 1st, 1.71 (1.27-2.29) and 2.92 (2.03-4.18) for the moderate and high MS defined by 2-5 and > 5 CpG sites with aberrant methylation compared with a MS of 0-1, respectively. After controlling for 8-iso levels, the hazard ratios of MS remained essentially unchanged while the association of 8-iso levels with mortality was attenuated. This study demonstrates that OS is highly associated with the epigenetic MS, and the latter at the same time has a higher predictive value for all-cause mortality.
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Affiliation(s)
- Xu Gao
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120, Heidelberg, Germany.,Medical Faculty Heidelberg, University of Heidelberg, Im Neuenheimer Feld 672, 69120, Heidelberg, Germany.,Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Xīn Gào
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120, Heidelberg, Germany.,Medical Faculty Heidelberg, University of Heidelberg, Im Neuenheimer Feld 672, 69120, Heidelberg, Germany.,Network Aging Research, University of Heidelberg, Bergheimer Straße 20, 69115, Heidelberg, Germany
| | - Yan Zhang
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120, Heidelberg, Germany
| | - Bernd Holleczek
- Saarland Cancer Registry, Präsident Baltz Strasse 5, 66119, Saarbrücken, Germany
| | - Ben Schöttker
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120, Heidelberg, Germany.,Network Aging Research, University of Heidelberg, Bergheimer Straße 20, 69115, Heidelberg, Germany
| | - Hermann Brenner
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120, Heidelberg, Germany. .,Network Aging Research, University of Heidelberg, Bergheimer Straße 20, 69115, Heidelberg, Germany. .,Division of Preventive Oncology, German Cancer Research Center (DKFZ) and National Center for Tumor Diseases (NCT), Im Neuenheimer Feld 460, 69120, Heidelberg, Germany. .,German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany.
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24
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Epigenetic Alterations: The Relation Between Occupational Exposure and Biological Effects in Humans. RNA TECHNOLOGIES 2019. [DOI: 10.1007/978-3-030-14792-1_11] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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25
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Gao X, Zhang Y, Schöttker B, Brenner H. Vitamin D status and epigenetic-based mortality risk score: strong independent and joint prediction of all-cause mortality in a population-based cohort study. Clin Epigenetics 2018; 10:84. [PMID: 29977410 PMCID: PMC6011585 DOI: 10.1186/s13148-018-0515-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 06/07/2018] [Indexed: 01/06/2023] Open
Abstract
Background Vitamin D deficiency and insufficiency have been established to be strongly associated with increased overall mortality and deaths from specific aging-related diseases. Recently, an epigenetic “mortality risk score” (MS) based on whole blood DNA methylation at the 10 most prominent mortality-related cytosine-phosphate-guanine (CpG) sites has also been found to be highly related to all-cause mortality. This study aimed to explore whether vitamin D status, defined by serum 25-hydroxyvitamin D [25(OH)D] concentrations, is associated with the MS and to what extent both indicators are individually and jointly capable of predicting all-cause mortality in a general population sample of older adults. Results The MS was derived from the blood DNA methylation profiles measured by Illumina Human Methylation 450K Beadchip, and serum 25(OH)D concentration was measured among 1467 participants aged 50–75 of the German ESTHER cohort study. There was no association between vitamin D status and the MS at baseline, but both metrics were prominently and independently associated with all-cause mortality during a median follow-up of 15.2 years. The combination of both indicators showed the potential to be a particularly strong prognostic index for all-cause mortality. Participants with vitamin D deficiency (< 30 nmol/L) and high MS (> 5 CpG sites with aberrant methylation) had almost sixfold mortality (hazard ratio 5.79, 95% CI 3.06–10.94) compared with participants with sufficient vitamin D (≥ 50 nmol/L) and a low MS (0–1 CpG site with aberrant methylation). Conclusions This study suggests that vitamin D and the MS are strong independent predictors of all-cause mortality in older adults. Electronic supplementary material The online version of this article (10.1186/s13148-018-0515-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xu Gao
- 1Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany.,5Current Address: Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY USA
| | - Yan Zhang
- 1Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany
| | - Ben Schöttker
- 1Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany.,2Network Aging Research, University of Heidelberg, Bergheimer Straße 20, 69115 Heidelberg, Germany
| | - Hermann Brenner
- 1Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany.,2Network Aging Research, University of Heidelberg, Bergheimer Straße 20, 69115 Heidelberg, Germany.,3Division of Preventive Oncology, German Cancer Research Center (DKFZ) and National Center for Tumor Diseases (NCT), Im Neuenheimer Feld 460, 69120 Heidelberg, Germany.,4German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
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Coroglaucigenin enhances the radiosensitivity of human lung cancer cells through Nrf2/ROS pathway. Oncotarget 2018; 8:32807-32820. [PMID: 28415625 PMCID: PMC5464829 DOI: 10.18632/oncotarget.16454] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 03/04/2017] [Indexed: 12/22/2022] Open
Abstract
Seven cardenolides isolated from the ethanol extract of the stems of Calotropis gigantea were evaluated in vitro against human cancer cells and the structure-activity relationships were discussed. The results demonstrated that a compound, named CGN (coroglaucigenin), had better anti-proliferative activity with the IC50 value less than 6 μM among these compounds. Further, we found that CGN displayed much lower cytotoxicity to normal lung epithelial cells (BEAS-2B) than cancer cells (A549). Especially, our results demonstrated that treatment with CGN (1 μM) combined with X-ray irradiation induced higher radiosensitivity in human lung cancer cells (A549, NCI-H460, NCI-H446) but not in BEAS-2B. The expression levels of nuclear transcription factor Nrf2 and Nrf2-driven antioxidant molecule NQO-1 reduced in A549 cells after combined treatment compared to the radiation only. However, CGN had no toxicity and the levels of antioxidant molecules expression were higher in BEAS-2B cells when given the similar treatment as A549 cells. These results suggest that CGN is a very promising potential sensitizer for cancer radiotherapy, which not only inhibits the proliferation of cancer cells but also enhances the radiosensitivity of cancer cells through suppressing the expression of antioxidant molecules while there is no influence for normal cells.
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Gao Y, Gao F, Hu TT, Li G, Sui YX. Combined effects of glutathione S-transferase M1 and T1 polymorphisms on risk of lung cancer: Evidence from a meta-analysis. Oncotarget 2018; 8:28135-28143. [PMID: 28427236 PMCID: PMC5438637 DOI: 10.18632/oncotarget.15943] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 02/23/2017] [Indexed: 12/29/2022] Open
Abstract
Many studies have reported an association between the glutathione S-transferase M1 null and T1 null polymorphisms and lung cancer risk. However, the combined effects of GSTM1 null and GSTT1 null polymorphisms have not been reported previously. We, therefore, performed a meta-analysis to investigate the combined effects. 40 publications with 44 case–control studies were selected in the meta-analysis, including 13,706 cases and 13,093 controls. Significant association was observed between the combined effects of GSTM1 and GSTT1 polymorphisms and lung cancer risk when all the eligible studies were pooled into the meta-analysis. When we performed subgroup analysis, significantly increased lung cancer risk was observed in Caucasians (− − vs. + +: OR = 1.23, 95% CI: 1.07 to 1.41), Asians (− − vs.− +: OR = 1.24, 95% CI: 1.10 to 1.41; recessive model: OR = 1.45, 95% CI: 1.19 to 1.77; dominant model: OR = 1.53, 95% CI: 1.24 to 1.90), Indians (− − vs. + +: OR = 2.53, 95% CI: 1.61 to 3.98; recessive model: OR = 1.69, 95% CI: 1.07 to 2.67; dominant model: OR = 2.11, 95% CI: 1.36 to 3.28), hospital-based studies, and population-based studies. In summary, this meta-analysis indicates that the combined effects of the GSTM1 and GSTT1 polymorphisms are associated with increased lung cancer risk in Asians, Caucasians, and Indians.
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Affiliation(s)
- Ying Gao
- Department of Radiotherapy Oncology, First Affiliated Hospital of Medical College of Xi'an, Jiao Tong University, Xi'an, Shanxi, China
| | - Fei Gao
- Department of Neurology, First Affiliated Hospital of Xi'an Medical University, Xi'an, Shanxi, China
| | - Ting-Ting Hu
- Department of Medical, First Affiliated Hospital of Medical College of Xi'an, Jiao Tong University, Xi'an, Shanxi, China
| | - Gang Li
- Second Department of Thoracic Surgery, First Affiliated Hospital of Medical College of Xi'an, Jiao Tong University, Xi'an, Shanxi, China
| | - Yan-Xia Sui
- Department of Pathology, First Affiliated Hospital of Medical College of Xi'an, Jiao Tong University, Xi'an, Shanxi, China
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Curcumin increases exosomal TCF21 thus suppressing exosome-induced lung cancer. Oncotarget 2018; 7:87081-87090. [PMID: 27894084 PMCID: PMC5349972 DOI: 10.18632/oncotarget.13499] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 10/28/2016] [Indexed: 11/25/2022] Open
Abstract
Curcumin is a novel drug for lung cancer treatment. However, the mechanism underlying the anti-tumor effect of curcumin remains elusive. Previous evidences indicated that, the methylating transferase DNMT1 is downregulated by curcumin, and the transcription factor 21 (TCF21) is suppressed by DNMT1. We hereby attempt to elucidate the correlation between curcumin treatment and TCF21 expression. Exosomes derived from curcumin-pretreated H1299 cells were used to treat BEAS-2B cells, which induced proliferation, colony formation and migration of BEAS-2B cells. An increase in TCF21 expression in response to curcumin was also seen, as revealed by real-time PCR (RT-PCR) and western blot. Analysis using the GEO database (access #GSE21210) indicated that a positive correlation existed between TCF21 levels and lung cancer patient survival. TCF21 overexpression and knockdown was introduced to H1299 cells through lentiviral system, which led to suppression and promotion of tumor growth, respectively. We also demonstrated that DNMT1 expression was downregulated by curcumin. Therefore, curcumin exerts its anti-cancer function by downregulating DNMT1, thereby upregulating TCF21.
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Chen L, Wang Y, Liu F, Xu L, Peng F, Zhao N, Fu B, Zhu Z, Shi Y, Liu J, Wu R, Wang C, Yao S, Li Y. A systematic review and meta-analysis: Association between MGMT hypermethylation and the clinicopathological characteristics of non-small-cell lung carcinoma. Sci Rep 2018; 8:1439. [PMID: 29362385 PMCID: PMC5780517 DOI: 10.1038/s41598-018-19949-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 01/10/2018] [Indexed: 12/21/2022] Open
Abstract
The relationship between O-6-methylguanine-DNA methyltransferase (MGMT) promoter methylation and clinicopathological characteristics of non-small-cell lung carcinoma (NSCLC) has remained controversial and unclear. Therefore, in this study we have undertaken a systematic review and meta-analysis of relevant studies to quantitatively investigate this association. We identified 30 eligible studies investigating 2714 NSCLC patients. The relationship between MGMT hypermethylation and NSCLC was identified based on 20 studies, including 1539 NSCLC patient tissue and 1052 normal and adjacent tissue samples (OR = 4.60, 95% CI = 3.46~6.11, p < 0.00001). MGMT methylation varied with ethnicity (caucasian: OR = 4.56, 95% CI = 2.63~7.92, p < 0.00001; asian: OR = 5.18, 95% CI = 2.03~13.22, p = 0.0006) and control style (autologous: OR = 4.44, 95% CI = 3.32~5.92, p < 0.00001; heterogeneous: OR = 9.05, 95% CI = 1.79~45.71, p = 0.008). In addition, MGMT methylation was observed to be specifically associated with NSCLC clinical stage, and not with age, sex, smoking, pathological types, and differentiation status. Also MGMT methylation did not impact NSCLC patients survival (HR = 1.32, 95% CI = 0.77~2.28, p = 0.31). Our study provided clear evidence about the association of MGMT hypermethylation with increased risk of NSCLC.
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Affiliation(s)
- Lin Chen
- Department of Internal Neurology, The Affiliated Ganzhou Hospital of Nanchang University (Ganzhou People's Hospital), Ganzhou, Jiangxi, 341000, China
| | - Yong Wang
- Department of Medical Oncology, The Affiliated Ganzhou Hospital of Nanchang University (Ganzhou People's Hospital), Ganzhou, Jiangxi, 341000, China
| | - Fen Liu
- Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchan, Jiangxi, 330000, China
| | - Liyao Xu
- Department of Medical Oncology, The First Affiliated Hospital of Nanchang University, Nanchan, Jiangxi, 330000, China
| | - Feifei Peng
- Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchan, Jiangxi, 330000, China
| | - Ning Zhao
- Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchan, Jiangxi, 330000, China
| | - Biqi Fu
- Department of Rheumatology, The First Affiliated Hospital of Nanchang University, Nanchan, Jiangxi, 330000, China
| | - Zijie Zhu
- Department of Medical Oncology, The First Affiliated Hospital of Nanchang University, Nanchan, Jiangxi, 330000, China
| | - Yu Shi
- Department of Medical Oncology, The First Affiliated Hospital of Nanchang University, Nanchan, Jiangxi, 330000, China
| | - Jiansheng Liu
- Department of Medical Oncology, The Affiliated Ganzhou Hospital of Nanchang University (Ganzhou People's Hospital), Ganzhou, Jiangxi, 341000, China
| | - Renrui Wu
- Department of Internal Neurology, The Affiliated Ganzhou Hospital of Nanchang University (Ganzhou People's Hospital), Ganzhou, Jiangxi, 341000, China
| | - Chen Wang
- Department of Internal Neurology, The Affiliated Ganzhou Hospital of Nanchang University (Ganzhou People's Hospital), Ganzhou, Jiangxi, 341000, China
| | - Shengmin Yao
- Department of Internal Neurology, The Affiliated Ganzhou Hospital of Nanchang University (Ganzhou People's Hospital), Ganzhou, Jiangxi, 341000, China
| | - Yong Li
- Department of Medical Oncology, The First Affiliated Hospital of Nanchang University, Nanchan, Jiangxi, 330000, China.
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Impact of DNA repair, folate and glutathione gene polymorphisms on risk of non small cell lung cancer. Pathol Res Pract 2018; 214:44-52. [DOI: 10.1016/j.prp.2017.11.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 11/08/2017] [Accepted: 11/16/2017] [Indexed: 12/18/2022]
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Cytokine single-nucleotide polymorphisms and risk of non-small-cell lung cancer. Pharmacogenet Genomics 2017; 27:438-444. [DOI: 10.1097/fpc.0000000000000307] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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ALX4, an epigenetically down regulated tumor suppressor, inhibits breast cancer progression by interfering Wnt/β-catenin pathway. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2017; 36:170. [PMID: 29183346 PMCID: PMC5706407 DOI: 10.1186/s13046-017-0643-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Accepted: 11/20/2017] [Indexed: 12/29/2022]
Abstract
Background ALX4 is a paired-like homedomain transcription factor mainly expressed in the mesenchymal compartment of variety of developing tissues, but its functions, regulation mechanisms and clinical values in breast cancer remains unclear. Methods The expression of ALX4 in breast cancer cell lines and patients’ tissues were detected by RT-PCR, qPCR and western blot. Furthermore TCGA database was applied to confirm these results. MSP and BSP methods were used to assess the methylation of ALX4 promoter region. In vitro proliferation, metastasis and in vivo nude mice model were used to evaluate the anti-tumor effect of ALX4 on breast cancer cell lines. Luciferase reporter assay, western blot and TCGA database were used to investigate the tumor suppression mechanisms of ALX4. TMA of 142 breast patients was generated to evaluate the clinical significance of ALX4. Results Expression analysis revealed that ALX4 expression is down regulated in breast cancer cell lines and tissues. MSP study showed that the promoter region of ALX4 was hyper-methylated 100% (3/3) in breast cancer cell lines and 69.44% (75/108) in primary breast tumors tissues while 0% (0/8) in normal breast tissues. 5-aza-dc de-methylation treatment restored ALX4 expression in breast cancer cell lines. Functional studies showed that ectopic expression of ALX4 in breast cancer cells inhibited cell proliferation, metastasis in vitro and in vivo. Mechanism study found that ALX4 exerted its anti-tumor function by suppressing the Wnt/β-catenin pathway through promoting the phosphorylation degradation of β-catenin in a GSK3β dependent manner. Clinically multivariate analysis showed that ALX4 expression was an independent favorable prognostic factor in breast cancer patients. Conclusions We reveal for the first time that ALX4 acts as a novel functional tumor suppressor inactivated by DNA methylation and is an independent prognostic factor in breast cancer. Electronic supplementary material The online version of this article (10.1186/s13046-017-0643-9) contains supplementary material, which is available to authorized users.
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Yang B, Li X, Chen D, Xiao C. Effects of fine air particulates on gene expression in non-small-cell lung cancer. Adv Med Sci 2017; 62:295-301. [PMID: 28501728 DOI: 10.1016/j.advms.2016.12.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Revised: 11/22/2016] [Accepted: 12/08/2016] [Indexed: 11/30/2022]
Abstract
PURPOSE Airborne particulate matter smaller than 2.5μm (PM2.5) has been shown to induce adverse health effects through various mechanisms. However, its effects on gene expression in non-small-cell lung cancer (NSCLC) remain undefined. The aim of this study was to analyze the expression profile of PM2.5-induced adverse health effects on human. MATERIALS AND METHODS We performed RNA sequencing to elucidate key molecular effects of PM2.5 collected from Shenyang China, to identify potential diagnostic markers or therapeutic targets, and further validated these differences in gene expression by using quantitative PCR in A549 and H1299 human non-small-cell lung cancer cell lines. To investigate the functional changes on PM2.5 exposed cells, we carried out the viability assay for the cell counting, and the Boyden chamber assay for invasion. RESULTS We found 143 genes that were expressed at least twice as much, or no more than half as much, in NSCLC cells exposed to PM2.5 than in unexposed cells. Results showed deregulated genes confronted PM2.5 exposure were significantly expressed, but commonly expressed in NSCLC cells. In addition, according to the viability assay and the Boyden chamber assay, PM2.5 exposed cells which have more competent on proliferation and invasion can keep the line with the results in RNA-Seq. CONCLUSION Our data may provide a more specific understanding of the signaling patterns associated with pathogenesis, and lead to novel markers and therapeutic targets for NSCLC.
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Affiliation(s)
- Biao Yang
- Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning 110032, PR China
| | - Xinming Li
- Key Lab of Environmental Pollution and Microecology, Shenyang Medical College, Shenyang, Liaoning 110034, PR China
| | - Dongmei Chen
- Key Lab of Environmental Pollution and Microecology, Shenyang Medical College, Shenyang, Liaoning 110034, PR China
| | - Chunling Xiao
- Key Lab of Environmental Pollution and Microecology, Shenyang Medical College, Shenyang, Liaoning 110034, PR China.
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Association of Smoking, Alcohol Use, and Betel Quid Chewing with Epigenetic Aberrations in Cancers. Int J Mol Sci 2017; 18:ijms18061210. [PMID: 28587272 PMCID: PMC5486033 DOI: 10.3390/ijms18061210] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 05/26/2017] [Accepted: 06/02/2017] [Indexed: 12/16/2022] Open
Abstract
Numerous environmental factors such as diet, alcohol use, stress, and environmental chemicals are known to elicit epigenetic changes, leading to increased rates of cancers and other diseases. The incidence of head and neck cancer, one of the most common cancers in Taiwanese males, is increasing: oral cancer and nasopharyngeal carcinoma are ranked fourth and tenth respectively, among the top ten cancers in this group, and a major cause of cancer-related deaths in Taiwanese males. Previous studies have identified smoking, alcohol use, and betel quid chewing as the three major causes of head and neck cancers; these three social habits are commonly observed in Taiwanese males, resulting in an increasing morbidity rate of head and neck cancers in this population. In this literature review, we discuss the association between specific components of betel quid, alcohol, and tobacco, and the occurrence of head and neck cancers, lung cancer, gastrointestinal cancers, and urethral cancer. We focus on regulatory mechanisms at the epigenetic level and their oncogenic effects. The review further discusses the application of FDA-approved epigenetic drugs as therapeutic strategies against cancer.
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Lung cancer mutation profile of EGFR, ALK, and KRAS: Meta-analysis and comparison of never and ever smokers. Lung Cancer 2016; 102:122-134. [DOI: 10.1016/j.lungcan.2016.10.010] [Citation(s) in RCA: 127] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 10/15/2016] [Accepted: 10/24/2016] [Indexed: 02/07/2023]
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36
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Yang B, Chen D, Zhao H, Xiao C. The effects for PM2.5 exposure on non-small-cell lung cancer induced motility and proliferation. SPRINGERPLUS 2016; 5:2059. [PMID: 27995036 PMCID: PMC5133205 DOI: 10.1186/s40064-016-3734-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 11/23/2016] [Indexed: 01/03/2023]
Abstract
Background Increasing urbanization and associated air pollution, including elevated levels of particulate matter (PM), are strongly correlated with the development of various respiratory diseases. In particular, PM2.5 has been implicated in promoting lung cancer initiation, growth and progression. Cell migration and proliferation are crucial for the progression of cancer. However, the molecular signatures and biological networks representing the distinct and shared features of non-small cell lung cancer (NSCLC) after PM2.5 exposure are unknown. Results Functional assays demonstrated higher proliferation, migration and invasion of cancer cells stimulated with PM2.5. To investigate the complicated mechanisms, we performed global transcriptome profiling of the A549 cell line. Particularly, transcriptome sequencing revealed invasive characteristics reminiscent of cancer cells. By comparing the transcriptomes, we identified distinct molecular signatures and cellular processes defining the invasive and proliferative properties of PM2.5-exposed cells, respectively. Interestingly, under the PM2.5-stimulated condition, the A549 and H1299 cells strengthened obviously properties in motility and proliferation. Based on the network model reconstructing the shared protein–protein interactions, we selected the two most up-regulated genes, interleukin-1β (IL1β) and matrix metalloprotease 1 (MMP1), as key regulators responsible for the effects of PM2.5 exposure. Notably, IL1β and MMP1 expression was elevated in independent assays, which was further enhanced by PM2.5. Conclusion Taken together, our systems approach to investigating PM2.5 exposure provides a basis to identify key regulators responsible for the pathological features of NSCLC.
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Affiliation(s)
- Biao Yang
- Basic Discipline of Chinese and Western Integrative, Liaoning University of Traditional Chinese Medicine, Shenyang, 110032 Liaoning People's Republic of China
| | - Dongmei Chen
- Key Lab of Environmental Pollution and Microecology, Shenyang Medical College, No. 146, Huanghe North Street, Shenyang, 110034 Liaoning Province People's Republic of China
| | - Hui Zhao
- Key Lab of Environmental Pollution and Microecology, Shenyang Medical College, No. 146, Huanghe North Street, Shenyang, 110034 Liaoning Province People's Republic of China
| | - Chunling Xiao
- Key Lab of Environmental Pollution and Microecology, Shenyang Medical College, No. 146, Huanghe North Street, Shenyang, 110034 Liaoning Province People's Republic of China
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Wang P, Zhang H, Hou H, Wang Q, Li Y, Huang Y, Xie L, Gao F, He S, Li L. Cell cycle arrest induced by inhibitors of epigenetic modifications in maize (Zea mays) seedling leaves: characterization of the process and possible mechanisms involved. THE NEW PHYTOLOGIST 2016; 211:646-657. [PMID: 27040740 DOI: 10.1111/nph.13942] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 02/20/2016] [Indexed: 06/05/2023]
Abstract
Epigenetic modifications play crucial roles in the regulation of chromatin architecture and are involved in cell cycle progression, including mitosis and meiosis. To explore the relationship between epigenetic modifications and the cell cycle, we treated maize (Zea mays) seedlings with six different epigenetic modification-related inhibitors and identified the postsynthetic phase (G2 ) arrest via flow cytometry analysis. Total H4K5ac levels were significantly increased and the distribution of H3S10ph signalling was obviously changed in mitosis under various treatments. Further statistics of the cells in different periods of mitosis confirmed that the cell cycle was arrested at preprophase. Concentrations of hydrogen peroxide were relatively higher in the treated plants and the antioxidant thiourea could negate the influence of the inhibitors. Moreover, all of the treated plants displayed negative results in the terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end labelling (TUNEL) and γ-H2AX immunostaining assays after exposure for 3 d. Additionally, the expression level of topoisomerase genes in the treated plants was relatively lower than that in the untreated plants. These results suggest that these inhibitors of epigenetic modifications could cause preprophase arrest via reactive oxygen species formation inhibiting the expression of DNA topoisomerase genes, accompanied by changes in the H4K5ac and H3S10ph histone modifications.
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Affiliation(s)
- Pu Wang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Hao Zhang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Haoli Hou
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Qing Wang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Yingnan Li
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Yan Huang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Liangfu Xie
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Fei Gao
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Shibin He
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Lijia Li
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
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Liu WB, Han F, Jiang X, Chen HQ, Zhao H, Liu Y, Li YH, Huang C, Cao J, Liu JY. TMEM196 acts as a novel functional tumour suppressor inactivated by DNA methylation and is a potential prognostic biomarker in lung cancer. Oncotarget 2016; 6:21225-39. [PMID: 26056045 PMCID: PMC4673261 DOI: 10.18632/oncotarget.4237] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2014] [Accepted: 05/12/2015] [Indexed: 12/31/2022] Open
Abstract
Epigenetic silencing of tumour suppressors contributes to the development and progression of lung cancer. We recently found that TMEM196 was hypermethylated in lung cancer. This study aimed to clarify its epigenetic regulation, possible roles and clinical significance. TMEM196 methylation correlated with loss of protein expression in chemical-induced rat lung pathologic lesions and human lung cancer tissues and cell lines. 5-aza-2′-deoxycytidine restored TMEM196 expression. Moreover, TMEM196 hypermethylation was detected in 61.2% of primary lung tumours and found to be associated with poor differentiation and pathological stage of lung cancer. Functional studies showed that ectopic re-expression of TMEM196 in lung cancer cells inhibited cell proliferation, clonogenicity, cell motility and tumour formation. However, TMEM196 knockdown increased cell proliferation and inhibited apoptosis and cell-cycle arrest. These effects were associated with upregulation of p21 and Bax, and downregulation of cyclin D1, c-myc, CD44 and β-catenin. Kaplan–Meier survival curves showed that TMEM196 downregulation was significantly associated with shortened survival in lung cancer patients. Multivariate analysis showed that patients with TMEM196 expression had a better overall survival. Our results revealed for the first time that TMEM196 acts as a novel functional tumour suppressor inactivated by DNA methylation and is an independent prognostic factor of lung cancer.
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Affiliation(s)
- Wen-bin Liu
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, P. R. China
| | - Fei Han
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, P. R. China
| | - Xiao Jiang
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, P. R. China
| | - Hong-qiang Chen
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, P. R. China
| | - Huan Zhao
- Department of Internal Neurology, Southwest Hospital, Third Military Medical University, Chongqing, P. R. China
| | - Yong Liu
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, P. R. China
| | - Yong-hong Li
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, P. R. China
| | - Chuanshu Huang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
| | - Jia Cao
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, P. R. China
| | - Jin-yi Liu
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, P. R. China
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Wu W, Parmar C, Grossmann P, Quackenbush J, Lambin P, Bussink J, Mak R, Aerts HJWL. Exploratory Study to Identify Radiomics Classifiers for Lung Cancer Histology. Front Oncol 2016; 6:71. [PMID: 27064691 PMCID: PMC4811956 DOI: 10.3389/fonc.2016.00071] [Citation(s) in RCA: 236] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 03/14/2016] [Indexed: 01/05/2023] Open
Abstract
Background Radiomics can quantify tumor phenotypic characteristics non-invasively by applying feature algorithms to medical imaging data. In this study of lung cancer patients, we investigated the association between radiomic features and the tumor histologic subtypes (adenocarcinoma and squamous cell carcinoma). Furthermore, in order to predict histologic subtypes, we employed machine-learning methods and independently evaluated their prediction performance. Methods Two independent radiomic cohorts with a combined size of 350 patients were included in our analysis. A total of 440 radiomic features were extracted from the segmented tumor volumes of pretreatment CT images. These radiomic features quantify tumor phenotypic characteristics on medical images using tumor shape and size, intensity statistics, and texture. Univariate analysis was performed to assess each feature’s association with the histological subtypes. In our multivariate analysis, we investigated 24 feature selection methods and 3 classification methods for histology prediction. Multivariate models were trained on the training cohort and their performance was evaluated on the independent validation cohort using the area under ROC curve (AUC). Histology was determined from surgical specimen. Results In our univariate analysis, we observed that fifty-three radiomic features were significantly associated with tumor histology. In multivariate analysis, feature selection methods ReliefF and its variants showed higher prediction accuracy as compared to other methods. We found that Naive Baye’s classifier outperforms other classifiers and achieved the highest AUC (0.72; p-value = 2.3 × 10−7) with five features: Stats_min, Wavelet_HLL_rlgl_lowGrayLevelRunEmphasis, Wavelet_HHL_stats_median, Wavelet_HLL_stats_skewness, and Wavelet_HLH_glcm_clusShade. Conclusion Histological subtypes can influence the choice of a treatment/therapy for lung cancer patients. We observed that radiomic features show significant association with the lung tumor histology. Moreover, radiomics-based multivariate classifiers were independently validated for the prediction of histological subtypes. Despite achieving lower than optimal prediction accuracy (AUC 0.72), our analysis highlights the impressive potential of non-invasive and cost-effective radiomics for precision medicine. Further research in this direction could lead us to optimal performance and therefore to clinical applicability, which could enhance the efficiency and efficacy of cancer care.
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Affiliation(s)
- Weimiao Wu
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Chintan Parmar
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Department of Radiology, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Research Institute GROW, Maastricht University, Maastricht, Netherlands
| | - Patrick Grossmann
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Department of Radiology, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - John Quackenbush
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Philippe Lambin
- Research Institute GROW, Maastricht University , Maastricht , Netherlands
| | - Johan Bussink
- Department of Radiation Oncology, Radboud University Medical Center , Nijmegen , Netherlands
| | - Raymond Mak
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Harvard Medical School , Boston, MA , USA
| | - Hugo J W L Aerts
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Department of Radiology, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston, MA, USA
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Wei H, Fang N, Guo L, Wu Z, Zhou Q. [Meta-analysis of the Association between RASSF1A Gene Promoter Methylation and Non-small Cell Lung Cancer]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2016; 18:443-50. [PMID: 26182870 PMCID: PMC6000249 DOI: 10.3779/j.issn.1009-3419.2015.07.09] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND OBJECTIVE The CpG island aberrant promoter methylation in the tumor suppressor gene region plays an important role in the process of tumorigenesis. Relevant evidence shows that the promoter methylation of RAS association domain family 1A (RASSF1A) gene, a tumor suppressor gene, has a close relationship with non-small cell lung cancer (NSCLC) development; therefore, RASSF1A may be a potential NSCLC biomarker. This paper discussed and summarized the relationship between RASSF1A gene promoter methylation frequency and NSCLC through meta-analysis. METHODS By searching Medline, EMBASE, CNKI, and Wanfang database, we selected and collected the published articles regarding RASSF1A gene promoter methylation and NSCLC risk according to the marked inclusion and exclusion criteria. Through meta-analysis, combined odds ratio (OR) and 95% confidence interval (CI) data were used to analyze the RASSF1A gene promoter methylation and NSCLC relationship. RESULTS A total of 23 articles were utilized in this study. Results indicated that the RASSF1A gene promoter methylation rate was 41.50% (95%CI: 34%-49%) in NSCLC tissue and was 5.58% (95%CI: 2%-9%) for the control group. Compared with normal lung tissue, RASSF1A methylation frequency in tumor tissue was significantly higher than that of the control group (OR=8.72, 95%CI: 4.88-15.58, P<0.05). Subgroup analysis showed that the RASSF1A gene promoter methylation rate of tumor tissue was higher than that of plasma group (OR=10.99, 95%CI: 2.48-48.68) and normal control tissue group (OR=8.74, 95%CI: 4.39-17.41). CONCLUSIONS The rate of RASSF1A promoter gene methylation in NSCLC patient tissue samples was higher than that of normal lung samples, whereas the rate of RASSF1A promoter gene methylation in the tissue has more significant effect on lung cancer occurrence. This finding indicates that RASSF1A gene promoter methylation could be used as an NSCLC biomarker and was involved in NSCLC carcinogenic effects.
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Affiliation(s)
- Huijun Wei
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, 300052 Tianjin, China
| | - Nianzhen Fang
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, 300052 Tianjin, China
| | - Lili Guo
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, 300052 Tianjin, China
| | - Zhihao Wu
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, 300052 Tianjin, China
| | - Qinghua Zhou
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, 300052 Tianjin, China
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Kong J, Xu F, Qu J, Wang Y, Gao M, Yu H, Qian B. Genetic polymorphisms in the vitamin D pathway in relation to lung cancer risk and survival. Oncotarget 2016; 6:2573-82. [PMID: 25544771 PMCID: PMC4385872 DOI: 10.18632/oncotarget.2951] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 12/09/2014] [Indexed: 12/16/2022] Open
Abstract
Studies have suggested that vitamin D may have protective effects against cancer development or tumor progression. To search for additional evidence, we investigated the role of genetic polymorphisms involved in the vitamin D pathway in non-small cell lung cancer (NSCLC). We evaluated common genetic polymorphisms associated with the vitamin D pathway in relation to NSCLC in a case-control study of 603 newly diagnosed NSCLC patients and 661 matched healthy controls. Seven single nucleotide polymorphisms (SNPs) were genotyped, the expression of CYP27B1 and CYP24A1 were measured in 153 tumor samples and their associations with genotypes and patient survival were also analyzed. In the case-control comparison, we found SNP rs3782130 (CYP27B1), rs7041 (GC), rs6068816 and rs4809957 (CYP24A1) associated with NSCLC risk. The risk of NSCLC was increased with the number of risk alleles. CYP27B1 and CYP24A1 expression were significantly different between tumor and normal tissues in NSCLC. High CYP27B1 expression was associated with better overall survival, and the expression was different by the rs3782130 genotype. The study suggests that some genetic polymorphisms involved in the vitamin D pathway may associate with NSCLC risk, and one of the polymorphisms (rs3782130) may affect gene expression and patient survival.
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Affiliation(s)
- Jinyu Kong
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Tianjin, China.,Department of Cancer Epigenetics Laboratory, First Affiliated Hospital of Henan University of Science and Technology, Luoyang, China.,Hongqiao International Institute of Medicine, Shanghai Tongren Hospital/Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Fangxiu Xu
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Tianjin, China
| | - Jinli Qu
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Tianjin, China
| | - Yu Wang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Tianjin, China
| | - Ming Gao
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Tianjin, China
| | - Herbert Yu
- Epidemiology Program, University of Hawaii Cancer Center, Honolulu, HI, USA
| | - Biyun Qian
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Tianjin, China.,Hongqiao International Institute of Medicine, Shanghai Tongren Hospital/Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Xu W, Jiang K, Shen M, Chen Y, Huang HY. Jumonji domain containing 2A predicts prognosis and regulates cell growth in lung cancer depending on miR-150. Oncol Rep 2015; 35:352-8. [PMID: 26498874 DOI: 10.3892/or.2015.4349] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 08/20/2015] [Indexed: 11/06/2022] Open
Abstract
Lung cancer has become the most common cancer worldwide, of which non-small cell lung cancer (NSCLC) accounts for over 80%. Previous studies have shown that the Jumonji domain containing 2A (JMJD2A) was aberrantly expressed in various tumors and involved in the regulation of tumor progression, but the role of JMJD2A on the tumorigenesis in NSCLC and the underlying mechanisms are still unclear. In the present study, we first identified the expression of JMJD2A in NSCLC tissues and cell lines through quantitative RT-PCR (qRT-PCR) and western blotting. Next, the effects of JMJD2A on the progression of NSCLC were analyzed. MTT assay was performed to measure the cell numbers and fluorescence-activated cell sorting (FACS) was adopted to evaluate cell apoptosis. Finally, the relationship between JMJD2A and miR-150 involved in NSCLC was studied. Our results suggested that JMJD2A was significantly overexpressed in NSCLC samples and cell lines. Kaplan-Meier analysis showed that high level of JMJD2A predicted a poor prognosis. Knockdown of JMJD2A inhibited tumor growth and promoted cell apoptosis in NSCLC cells. Additionally, miR-150 was upregulated in NSCLC tissues and positively related with JMJD2A expression. Significant downregulation of miR-150 was observed with JMJD2A knockdown. Furthermore, JMJD2A knockdown inhibited NSCLC cell proliferation while the silencing of miR-150 attenuated the inhibition effect on cell proliferation, suggesting that the effect of JMJD2A on NSCLC cell growth was dependent on miR-150. Thus, our findings identified that JMJD2A played an oncogenic role in NSCLC via regulating miR-150. JMJD2A could possibly serve as a prognostic factor and potential target for NSCLC therapy.
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Affiliation(s)
- Weihua Xu
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| | - Kanqiu Jiang
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| | - Mingjing Shen
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| | - Yongbing Chen
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| | - Hao-Yue Huang
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
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Avci N, Hayar M, Altmisdortoglu O, Tanriverdi O, Deligonul A, Ordu C, Evrensel T. Smoking habits are an independent prognostic factor in patients with lung cancer. CLINICAL RESPIRATORY JOURNAL 2015; 11:579-584. [DOI: 10.1111/crj.12386] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Revised: 08/13/2015] [Accepted: 09/07/2015] [Indexed: 02/04/2023]
Affiliation(s)
- Nilufer Avci
- Department of Medical Oncology; State Hospital; Balikesir Turkey
| | - Murat Hayar
- Department of Radiation Oncology; State Hospital; Balikesir Turkey
| | | | - Ozgur Tanriverdi
- Department of Medical Oncology; Mugla Sitki Kocman University Faculty of Medicine; Mugla Turkey
| | - Adem Deligonul
- Department of Medical Oncology; Uludag University Faculty of Medicine; Bursa Turkey
| | - Cetin Ordu
- Department of Medical Oncology; State Hospital; Balikesir Turkey
| | - Turkkan Evrensel
- Department of Medical Oncology; Uludag University Faculty of Medicine; Bursa Turkey
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44
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Qu X, Liu J, Zhong X, Li X, Zhang Q. PIWIL2 promotes progression of non-small cell lung cancer by inducing CDK2 and Cyclin A expression. J Transl Med 2015; 13:301. [PMID: 26373553 PMCID: PMC4571108 DOI: 10.1186/s12967-015-0666-y] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 09/09/2015] [Indexed: 01/19/2023] Open
Abstract
Background PIWI proteins have important roles in tumorigenesis due to their interaction with piRNAs. Recent studies suggest that PIWI proteins affect prognosis of various cancers. Methods In the present study, PIWI genes expression was assayed in non-small cell lung cancer (NSCLC). To determine the effects of PIWIL2 on NSCLC cells, overexpression and interference assays were performed using the A549 and H460 cell lines. The tumor formation model was performed to demonstrate the effects of PIWIL2 on tumor formation in vivo. Results PIWIL2 was increased both at the RNA and protein level in malignant cancer tissues compared with adjacent normal tissue. Moreover, increased PIWIL2 gene expression was negatively correlated with prognosis in NSCLC patients. Overexpression and interference of PIWIL2 promoted and depressed cell proliferation, respectively. Meanwhile, PIWIL2 interference arrested cells at the G2/M stage. In addition, we found that CDK2 and Cyclin A expression were correlated with PIWIL2 expression. Moreover, transfection of PIWIL2 promoted tumor growth in nude mice. Conclusion Our findings shed light on the function of PIWIL2 in NSCLC and suggest potential prognostic and therapeutic value.
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Affiliation(s)
- Xiaohan Qu
- The First Affiliated Hospital, China Medical University, NO. 155, Nanjing North Street, Heping District, Shenyang, 110001, Liaoning, China.
| | - Jinlu Liu
- The Forth Affiliated Hospital, China Medical University, Shenyang, China.
| | - Xinwen Zhong
- The First Affiliated Hospital, China Medical University, NO. 155, Nanjing North Street, Heping District, Shenyang, 110001, Liaoning, China.
| | - Xi Li
- The First Affiliated Hospital, China Medical University, NO. 155, Nanjing North Street, Heping District, Shenyang, 110001, Liaoning, China.
| | - Qigang Zhang
- The First Affiliated Hospital, China Medical University, NO. 155, Nanjing North Street, Heping District, Shenyang, 110001, Liaoning, China.
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45
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Wang Y, Wang H, Gao H, Xu B, Zhai W, Li J, Zhang C. Elevated expression of TGIF is involved in lung carcinogenesis. Tumour Biol 2015; 36:9223-31. [PMID: 26091794 DOI: 10.1007/s13277-015-3615-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 05/26/2015] [Indexed: 02/06/2023] Open
Abstract
The purpose of this study was to explore the expression of TG-interacting factor (TGIF) in lung carcinogenesis. Malignant transformation of human bronchial epithelial (16HBE) cell was established by benzo(a)pyrene (BaP) treatment. Soft agar assay and tumor formation assay in nude mice were applied. Tumorigenesis experiment in vivo was done by BaP treatment. Western blotting, immunohistochemistry, and quantitative polymerase chain reaction were used to detect TGIF expression. We observed a higher level of TGIF messenger RNA (mRNA) in lung cancer tissues than that in paracancerous tissues. We observed significantly higher levels of TGIF mRNA and protein in A549 and H1299 cell lines than that in 16HBE cell. Increased expressions of TGIF protein and mRNA were observed in 16HBE cells induced by BaP treatment as compared to those in solvent control group. We observed significantly higher levels of TGIF mRNA and protein in 16HBE-BaP cells than that in 16HBE-control cells. We observed significantly higher levels of TGIF mRNA and protein in mice lung tissues treated with BaP than that in control group. Our results suggested that elevated expression of TGIF was involved in lung carcinogenesis.
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Affiliation(s)
- Yadong Wang
- Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou, 450016, China.
| | - Haiyu Wang
- Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou, 450016, China
| | - Huiyan Gao
- Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou, 450016, China
| | - Bing Xu
- Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou, 450016, China
| | - Wenlong Zhai
- Department of General Surgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Jiangmin Li
- Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou, 450016, China
| | - Congke Zhang
- Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou, 450016, China
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Cheng X, Yang Y, Fan Z, Yu L, Bai H, Zhou B, Wu X, Xu H, Fang M, Shen A, Chen Q, Xu Y. MKL1 potentiates lung cancer cell migration and invasion by epigenetically activating MMP9 transcription. Oncogene 2015; 34:5570-81. [PMID: 25746000 DOI: 10.1038/onc.2015.14] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 12/17/2014] [Accepted: 01/07/2015] [Indexed: 12/24/2022]
Abstract
Malignant tumors are exemplified by excessive proliferation and aggressive migration/invasion contributing to increased mortality of cancer patients. Matrix metalloproteinase 9 (MMP9) expression is positively correlated with lung cancer malignancy. The mechanism underlying an elevated MMP9 expression is not clearly defined. We demonstrate here that the transcriptional modulator megakaryocytic leukemia 1 (MKL1) was activated by hypoxia and transforming growth factor (TGF-β), two prominent pro-malignancy factors, in cultured lung cancer cells. MKL1 levels were also increased in more invasive types of lung cancer in humans. Depletion of MKL1 in lung cancer cells attenuated migration and invasion both in vitro and in vivo. Overexpression of MKL1 potentiated the induction of MMP9 transcription by hypoxia and TGF-β, whereas MKL1 silencing diminished MMP9 expression. Of interest, MKL1 knockdown eliminated histone H3K4 methylation surrounding the MMP9 promoter. Further analyses revealed that MKL1 recruited ASH2, a component of the H3K4 methyltransferase complex, to activate MMP9 transcription. Depletion of ASH2 ameliorated cancer cell migration and invasion in an MMP9-dependent manner. Together our data indicate that MKL1 potentiates lung cancer cell migration and invasion by epigenetically activating MMP9 transcription.
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Affiliation(s)
- X Cheng
- Key Laboratory of Cardiovascular Disease and Department of Pathophysiology, Nanjing Medical University, Nanjing, China.,Jiangsu Institute of Nuclear Medicine, Wuxi, China
| | - Y Yang
- Key Laboratory of Cardiovascular Disease and Department of Pathophysiology, Nanjing Medical University, Nanjing, China.,State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China
| | - Z Fan
- Key Laboratory of Cardiovascular Disease and Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - L Yu
- Key Laboratory of Cardiovascular Disease and Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - H Bai
- Key Laboratory of Cardiovascular Disease and Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - B Zhou
- Key Laboratory of Cardiovascular Disease and Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - X Wu
- Key Laboratory of Cardiovascular Disease and Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - H Xu
- Key Laboratory of Cardiovascular Disease and Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - M Fang
- Key Laboratory of Cardiovascular Disease and Department of Pathophysiology, Nanjing Medical University, Nanjing, China.,Department of Nursing, Jiangsu Jiankang Vocational University, Nanjing, China
| | - A Shen
- Department of Key Laboratory of Inflammation and Molecular Targets, Medical College, Nantong University, Nantong, China
| | - Q Chen
- Key Laboratory of Cardiovascular Disease and Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Y Xu
- Key Laboratory of Cardiovascular Disease and Department of Pathophysiology, Nanjing Medical University, Nanjing, China
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Baykara O, Bakir B, Buyru N, Kaynak K, Dalay N. Amplification of chromosome 8 genes in lung cancer. J Cancer 2015; 6:270-5. [PMID: 25663945 PMCID: PMC4317763 DOI: 10.7150/jca.10638] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 12/18/2014] [Indexed: 12/25/2022] Open
Abstract
Chromosomal alterations are frequent events in lung carcinogenesis and usually display regions of focal amplification containing several overexpressed oncogenes. Although gains and losses of chromosomal loci have been reported copy number changes of the individual genes have not been analyzed in lung cancer. In this study 22 genes were analyzed by MLPA in tumors and matched normal tissue samples from 82 patients with non-small cell lung cancer. Gene amplifications were observed in 84% of the samples. Chromosome 8 was found to harbor the most frequent copy number alterations. The most frequently amplified genes were ZNF703, PRDM14 and MYC on chromosome 8 and the BIRC5 gene on chromosome 17. The frequency of deletions were much lower and the most frequently deleted gene was ADAM9. Amplification of the ZNF703, PRDM14 and MYC genes were highly correlated suggesting that the genes displaying high copy number changes on chromosome 8 collaborate during lung carcinogenesis.
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Affiliation(s)
- Onur Baykara
- 1. Department of Medical Biology, Cerrahpasa Medical Faculty, Istanbul University, Turkey
| | - Burak Bakir
- 1. Department of Medical Biology, Cerrahpasa Medical Faculty, Istanbul University, Turkey
| | - Nur Buyru
- 1. Department of Medical Biology, Cerrahpasa Medical Faculty, Istanbul University, Turkey
| | - Kamil Kaynak
- 2. Department of Chest Surgery, Cerrahpasa Medical Faculty, Istanbul University, Turkey
| | - Nejat Dalay
- 3. Department of Basic Oncology, I.U. Oncology Institute, Istanbul University, Turkey
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FasL -844T/C and Fas -1377G/A: mutations of pulmonary adenocarcinoma in South China and their clinical significances. Tumour Biol 2015; 36:4319-26. [PMID: 25596086 PMCID: PMC4529455 DOI: 10.1007/s13277-015-3071-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 01/08/2015] [Indexed: 11/22/2022] Open
Abstract
Apoptosis is an important mechanism of malignant tumor formation and progression. Single nucleotide polymorphisms (SNPs) located within cell death genes may influence cancer risk. We explored the relationship between FasL −844T/C and/or Fas −1377G/A SNPs and pulmonary adenocarcinoma (AD). Two hundred seventy-five patients with pulmonary AD of South China admitted into Zhejiang Cancer Hospital from July 2007 to October 2011 were randomly selected, and their clinicopathological data were collected at the same time. Two hundred ninety-seven cases of healthy individuals were selected as control. FasL −844T/C and Fas −1377G/A SNPs were detected by PCR-RFLP technique to evaluate the relationships between these two SNPs and pulmonary AD. Age, FasL −844 and Fas −1377 SNPs were associated with increased risk of pulmonary AD susceptibility in main effect analysis. FasL −844CC and Fas −1377 AA were associated with an increased risk for the development of pulmonary AD only in age <60 years people, but not in those ≥60 years. FasL −844CC genotype was associated with an increased risk for pulmonary AD (adjusted OR = 2.010, 95 % CI 1.196–3.379, P = 0.008) compared with TT genotype. However, Fas −1377 AA was a risk factor only when FasL −844 genotype was CC. Fas −1377 genotypes showed significant effect modification of pulmonary AD risk by FasL −844 genotype with test of the interaction term adjusting for age, gender, and FasL −844 SNP. Fas −1377G/A was not associated with the clinicopathological factors, while FasL −844C/T was associated with tumor stage and lymph node metastasis in age ≥60 years people and tumor stage in those <60 years. In conclusion, FasL −844 SNP is associated with the susceptibility of pulmonary AD in age <60 years people. Fas −1377 SNP may modify the association of FasL −844 SNP with the risk of pulmonary AD. FasL −844 genotype plays an important role in the occurrence and progression of pulmonary AD.
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Li HM, Guo K, Yu Z, Feng R, Xu P. Diagnostic value of protein chips constructed by lung-cancer-associated markers selected by the T7 phage display library. Thorac Cancer 2015; 6:469-74. [PMID: 26273403 PMCID: PMC4511326 DOI: 10.1111/1759-7714.12215] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Accepted: 11/05/2014] [Indexed: 12/17/2022] Open
Abstract
Background Traditional diagnostic technology with tumor biomarkers is inefficient, expensive and requires a large number of serum samples. The purpose of this study was to construct human lung cancer protein chips with new lung cancer biomarkers screened by the T7-phage display library, and improve the early diagnosis rate of lung cancer. Methods A T7-phage cDNA display library was constructed of fresh samples from 30 lung cancer patients. With biopanning and high-throughput screening, we gained the immunogenic phage clones from the cDNA library. The insert of selected phage was blasted at GeneBank for alignment to find the exact or the most similar known genes. Protein chips were then constructed and used to assay their expression level in lung cancer serum from 217 cases of lung cancer groups:80 cases of benign lung disease and 220 healthy controls. Results After four rounds of Biopanning and two rounds of enzyme-linked immunosorbent assay, 12 phage monoclonal samples were selected from 2880 phage monoclonal samples. After blasting at GeneBank, six similar genes were used to construct diagnostic protein chips. The protein chips were then used to assay expression level in lung cancer serum. The expression level of six genes in lung cancer groups was significantly higher than those in the other two groups (P < 0.05). Conclusions In this study, we successfully constructed diagnostic protein chips with biomarkers selected from the lung cancer T7-phage cDNA library, which can be used for the early screening of lung cancer patients.
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Affiliation(s)
- Hong-Mei Li
- Cancer Center, The Affiliated Hospital of Qingdao University Qingdao, China
| | - Kang Guo
- Cancer Center, The Affiliated Hospital of Qingdao University Qingdao, China
| | - Zhuang Yu
- Cancer Center, The Affiliated Hospital of Qingdao University Qingdao, China
| | - Rui Feng
- Cancer Center, The Affiliated Hospital of Qingdao University Qingdao, China
| | - Ping Xu
- Cancer Center, The Affiliated Hospital of Qingdao University Qingdao, China
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Grageda M, Silveyra P, Thomas NJ, DiAngelo SL, Floros J. DNA methylation profile and expression of surfactant protein A2 gene in lung cancer. Exp Lung Res 2014; 41:93-102. [PMID: 25514367 DOI: 10.3109/01902148.2014.976298] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Knowledge of the methylation profile of genes allow for the identification of biomarkers that may guide diagnosis and effective treatment of disease. Human surfactant protein A (SP-A) plays an important role in lung homeostasis and immunity, and is encoded by two genes (SFTPA1 and SFTPA2). The goal of this study was to identify differentially methylated CpG sites in the promoter region of the SFTPA2 gene in lung cancer tissue, and to determine the correlation between the promoter's methylation profile and gene expression. For this, we collected 28 pairs of cancerous human lung tissue and adjacent noncancerous (NC) lung tissue: 17 adenocarcinoma (AC), 9 squamous cell carcinoma (SCC), and 2 AC with SCC features, and we evaluated DNA methylation of the SFTPA2 promoter region by bisulfite conversion. Our results identified a higher methylation ratio in one CpG site of the SFTPA2 gene in cancerous tissue versus NC tissue (0.36 versus 0.11, p = 0.001). When assessing AC samples, we also found cancerous tissues associated with a higher methylation ratio (0.43 versus 0.10, p = 0.02). In the SCC group, although cancerous tissue showed a higher methylation ratio (0.22 versus 0.11), this difference was not statistically significant (p = 0.35). Expression of SFTPA2 mRNA and total SP-A protein was significantly lower in cancer tissue when compared to adjacent NC tissue (p < 0.001), and correlated with the hypermethylated status of an SFTPA2 CpG site in AC samples. The findings of this pilot study may hold promise for future use of SFTPA2 as a biomarker for the diagnosis of lung cancer.
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Affiliation(s)
- Melissa Grageda
- 1Pediatric Critical Care Division, Department of Pediatrics, Pennsylvania State Children's Hospital, The Pennsylvania State University College of Medicine , Hershey, PA , United States
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