Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA132715 | ENA |
REPOSITORIES: ENA
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Project description:The objective of this study was to analyze the mitochondrial mutations induced by chronic cigarette smoke extract treatment in human oral immortal OKF6 cells. The objective of this study was to analyze the mitochondrial mutations induced by chronic cigarette smoke extract treatment in human oral immortal OKF6 cells. 2 samples were included, a control passaged human oral immortal OKF6 cells and cigarette smoke extract-treated OKF6 cells. The chronic treatment for cigarette smoke extract is 7 months. Genomic DNAs were extracted from both cells and then used for Affymetix MitoChip Version 2.0 analysis.
2011-02-10 | E-GEOD-24414 | biostudies-arrayexpress
Project description:The objective of this study was to analyze the mitochondrial mutations induced by chronic cigarette smoke extract treatment in human oral immortal OKF6 cells. The objective of this study was to analyze the mitochondrial mutations induced by chronic cigarette smoke extract treatment in human oral immortal OKF6 cells.
2011-02-10 | GSE24414 | GEO
Project description:Recent epidemiological studies demonstrate that both active and involuntary exposure to tobacco smoke increases the risk of breast cancer. Little is known, however, about the molecular mechanisms by which tobacco smoke contributes to breast carcinogenesis. To investigate these mechanisms we have analyzed gene expression and methylation in MCF 10A mammary epithelial cells chronically exposed to aqueous cigarette smoke extract (CSE).
2013-08-12 | GSE42623 | GEO
Project description:Recent epidemiological studies demonstrate that both active and involuntary exposure to tobacco smoke increases the risk of breast cancer. Little is known, however, about the molecular mechanisms by which tobacco smoke contributes to breast carcinogenesis. To investigate these mechanisms we have analyzed gene expression and methylation in MCF 10A mammary epithelial cells chronically exposed to aqueous cigarette smoke extract (CSE).
2013-08-12 | GSE42667 | GEO
Project description:Esophageal squamous cell carcinoma (ESCC) is one of the most common cancers with high mortality rate. Smoking is one of the established risk factors of ESCC. However, there is limited data on molecular alterations associated with cigarette smoke exposure in esophageal cells. Understanding the effects of cigarette smoke on esophageal squamous epithelial cells at a molecular level would lead to a better understanding of the pathobiology of ESCC which has implications for identification of early biomarkers and therapeutic targets. To investigate the effect of cigarette smoke exposure, we developed a cell line model where Het1A cells (non-neoplastic human esophageal epithelial cells) were chronically treated with cigarette smoke condensate (CSC) for 2 months, 4 months, 6 months and 8 months. We carried out comparative proteomic, phosphoproteomic and whole exome sequencing analyses on CSC treated and untreated cells. Increased cell proliferation and invasion of Het1A cells was observed after chronic exposure to cigarette smoke. Using quantitative proteomic and phosphoproteomic analyses, we identified 56 proteins and 296 phosphoproteins that showed differential expression. Bioinformatics analysis of differentially expressed proteins and phosphoproteins showed enrichment of molecules involved in DNA damage response pathway. Whole exome sequencing (WES) of CSC treated and untreated cells also revealed mutations and copy number alterations in genes associated with DNA damage response. By correlating WES, proteomic and phosphoproteomic results, we observed potential loss of function in HMGN2 and MED1 that were reported as potential tumor suppressors and are known to play important role in DNA damage response. We also observed decreased expression of HMGN2 in tissue section of ESCC. Overexpression of HMGN2 and MED1 lead to decreased proliferative and invasive ability of CSC treated cells. These findings suggest that cigarette smoke affects genes and proteins associated with DNA damage response pathways which might play a vital role in development of ESCC.
2021-09-07 | PXD007799 | Pride
Project description:Esophageal squamous cell carcinoma (ESCC) is one of the most common cancers with high mortality rate. Smoking is one of the established risk factors of ESCC. However, there is limited data on molecular alterations associated with cigarette smoke exposure in esophageal cells. Understanding the effects of cigarette smoke on esophageal squamous epithelial cells at a molecular level would lead to a better understanding of the pathobiology of ESCC which has implications for identification of early biomarkers and therapeutic targets. To investigate the effect of cigarette smoke exposure, we developed a cell line model where Het1A cells (non-neoplastic human esophageal epithelial cells) were chronically treated with cigarette smoke condensate (CSC) for 2 months, 4 months, 6 months and 8 months. We carried out comparative proteomic, phosphoproteomic and whole exome sequencing analyses on CSC treated and untreated cells. Increased cell proliferation and invasion of Het1A cells was observed after chronic exposure to cigarette smoke. Using quantitative proteomic and phosphoproteomic analyses, we identified 56 proteins and 296 phosphoproteins that showed differential expression. Bioinformatics analysis of differentially expressed proteins and phosphoproteins showed enrichment of molecules involved in DNA damage response pathway. Whole exome sequencing (WES) of CSC treated and untreated cells also revealed mutations and copy number alterations in genes associated with DNA damage response. By correlating WES, proteomic and phosphoproteomic results, we observed potential loss of function in HMGN2 and MED1 that were reported as potential tumor suppressors and are known to play important role in DNA damage response. We also observed decreased expression of HMGN2 in tissue section of ESCC. Overexpression of HMGN2 and MED1 lead to decreased proliferative and invasive ability of CSC treated cells. These findings suggest that cigarette smoke affects genes and proteins associated with DNA damage response pathways which might play a vital role in development of ESCC.
2021-09-07 | PXD007814 | Pride
Project description:This study was performed to test the hypothesis that cigarette smoke extract would alter the responses of primary cultures of human bronchial epithelial cells to infection with purified human rhinovirus 16. The data show marked alterations in rhinovirus-induced expression profiles of a number of genes in the presence of cigarette smoke extract (CSE).
2011-03-15 | GSE27973 | GEO
Project description:Smoking is the leading cause of preventable death worldwide. It increases the risk for various diseases including respiratory diseases, vascular diseases and different cancers including lung, oral and bladder cancer. Despite being the leading cause of oral cancer, the molecular mechanisms resulting in malignancy upon cigarette smoke exposure are yet to be fully elucidated. It is crucial to note that disease development is observed upon chronic exposure to cigarette smoke, as opposed to a short-term exposure. Hence, we sought to investigate the effect of chronic smoke exposure on normal oral keratinocytes (OKF6/TERT1). We employed tandem mass tag-based quantitative proteomic and phosphoproteomic approaches to investigate the proteomic and signaling changes in OKF6/TERT1 cells chronically exposed to cigarette smoke compared to untreated cells. LC/MS2 analysis resulted in the quantification of 5,067 proteins among which expression of 360 proteins were found to be dysregulated in at least one replicate. Phosphoproteomic analysis revealed quantification of 3,647 phosphopeptides corresponding to 1,801 proteins. Majority of the dysregulated proteins were seen to be involved in cellular processes such as cell growth, cellular communication and energy metabolism. This study will aid in elucidating the effects of smoking in oral cancer and in the identification of potential candidates molecules which could serve as early detection biomarkers or therapeutic targets.
2018-03-05 | PXD007637 | Pride
Project description:Recent epidemiological studies demonstrate that both active and involuntary exposure to tobacco smoke increases the risk of breast cancer. Little is known, however, about the molecular mechanisms by which tobacco smoke contributes to breast carcinogenesis. To investigate these mechanisms we have analyzed gene expression and methylation in MCF 10A mammary epithelial cells chronically exposed to aqueous cigarette smoke extract (CSE). CSE was prepared weekly and added to the cell cultures at a concentration equivalent to 0.001 cigarettes/ml for 21 weeks. Mock-treated samples were prepared in parallel.
2013-08-12 | E-GEOD-42623 | biostudies-arrayexpress