Download or read book Tumor Suppressive Role of Chromosomes 11 13 and 14 in Esophageal Squamous Cell Carcinoma Studied by Functional Complementation written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: HKUST Call Number: Thesis BIOL 2005 Ko.
Download or read book Characterization of Plant Homeodomain Finger Protein 11 Phf11 a Candidate Tumor Suppressor in Esophageal Squamous Cell Carcinoma written by Wai-Ying Cheung and published by Open Dissertation Press. This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Characterization of Plant Homeodomain Finger Protein 11 (PHF11), a Candidate Tumor Suppressor, in Esophageal Squamous Cell Carcinoma" by Wai-ying, Cheung, 張慧盈, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Esophageal squamous cell carcinoma (ESCC) is a common cancer worldwide with a high mortality rate. High occurrence of ESCC is observed in Southeast Asia. Identification and characterization of ESCC important tumor suppressor genes will be highly beneficial to the understanding of the disease and for the early diagnosis and improvement of therapy for the cancer. In our previous microcell-mediated chromosome transfer (MMCT) studies, the transfer of an intact chromosome 13 into the recipient ESCC cell line revealed the tumor suppressive ability and putative tumor suppressive function of chromosome 13 in ESCC. One candidate gene, Plant-Homeodomain Finger Protein 11(PHF11), was identified from the study and selected for further functional studies in this current study. PHF11, located on chromosomal region 13q14, contains two plant homeodomain fingers and is a member of the PHD finger protein family. PHF11was reported to be associated with asthma and atopic diseases, yet no studies of PHF11havebeen reported in cancer to date. This study is the first to report the functional role of PHF11in tumor suppression. In this current study, two isoforms of PHF11, PHF11aand b, were reintroduced into ESCC cell lines by methods of transient tranfection and lentiviral-infection. In vitro studies showed both isoforms have cell proliferation and colony-formation inhibition abilities. In the nude mouse tumorigenicity assay, however, it was revealed that only thePHF11aisoform was tumor suppressive in vivo. No differences in angiogenesis-related factors and apoptosis-related factors were observed in PHF11a-and b-expressing cells. Further studies by Western blotting analysis and flow cytometry analysis showed that PHF11amay play a role in delaying cell cycle progression by the down-regulation of cyclin expression, while the PHF11bmay be functionally inactive, The results of this current study further confirm the tumor suppressive role of PHF11ain ESCC, whereas the PHF11b isoform was unable to suppress tumor formation in vivo. Further study of the PHF11 isoforms to identify their differential functions and interacting partners will provide a better understanding of the mechanism by which PHF11a suppressestumor growth. DOI: 10.5353/th_b5016283 Subjects: Antioncogenes Esophagus - Cancer - Genetic aspects
Download or read book Role of Dnajb6 in Esophageal Squamous Cell Carcinoma written by Zhuoyou Yu and published by Open Dissertation Press. This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Role of DNAJB6 in Esophageal Squamous Cell Carcinoma" by Zhuoyou, Yu, 余卓由, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Esophageal cancer (EC), which is geographically diverse, has only a 10.7% five-year survival rate. One of the histologic forms, esophageal squamous cell carcinoma (ESCC), in Hong Kong accounts for 81.5% of the total EC cases and its five-year survival rate is only 14%, due to its high frequency of metastasis. In our previous studies, functional complementation study of chromosome 9 defects led to the discovery of a novel tumor suppressor gene, Deleted in Esophageal Cancer 1 (DEC1), mapping to 9q32. DEC1 was shown to reduce tumorigenicity in a mouse model and its expression was shown to be associated with lymph node metastasis, early onset of ESCC, and familial ESCC development in a tissue microarray (TMA) study. Moreover, DNAJ (Hsp40) homologue subfamily B member 6 (DNAJB6), a molecular co-chaperone protein and the focus of the current study, was identified as a DEC1-interacting protein through a yeast two-hybrid screening. The interaction was further confirmed by the GST pull-down assay and co-localization studies. Using a TMA constructed with ESCC tissues from Hong Kong, the clinical relevance of DNAJB6 expression was demonstrated. In the present study, the role of DNAJB6 in ESCC was investigated using cell line-based in vivo and in vitro studies. DNAJB6 was shown to be down-regulated in ESCC cell lines. The two isoforms of DNAJB6 have distinct subcellular localizations, with DNAJB6a mainly localized to the nucleus and DNAJB6b diffused throughout the cell. Existence of a functional nuclear localization signal peptide and a functional nuclear export signal peptide was verified in DNAJB6a and DNAJB6b, respectively. In vitro evidence of possible DNAJB6a truncation was found. In vivo subcutaneous nude mice tumorigenicity assays showed that over-expression of DNAJB6a, but not DNAJB6b, suppresses tumor growth at the primary site, while DNAJB6a silencing enhances tumor growth. The suppressive effect of DNAJB6a depends on nuclear localization of the protein and the HPD tripeptide motif in the N-terminal J domain. In vitro function studies show that DNAJB6a over-expression impairs cell proliferation by suppressing G1/S transition. AKT1 phosphorylation is down-regulated in DNAJB6a over-expressed cells, leading to up-regulation of p27KIP1 protein expression and down-regulation of cyclin E1 protein expression, the G1/S transition promoter, in an AKT1-dependent manner. DNAJB6a silencing results in the opposite effect. Over-expression of DNAJB6b, but not DNAJB6a, instead suppresses lung colonization in an experimental metastasis assay, and prolongs survival of the mice. Silencing of DNAJB6a in immortalized normal esophageal epithelial cells initially induces a senescence-like phenotype with greatly reduced proliferation possibly due to oncogenic stress from up-regulation of AKT1 phosphorylation and cyclin E1 protein expression, but promotes EMT-like molecular alterations by up-regulating STAT3 phosphorylation and TWIST1 protein expression and resumes proliferation after prolonged culture. In summary, these results suggest that DNAJB6 plays a critical role in ESCC initiation, development, and metastasis and provides valuable insight into the understanding of ESCC tumorigenesis and metastasis. This suggests its usefulness as a biomarker candidate for detecting early ESCC tumor initiation. DOI: 10.5353/th_b5177324 Subjects: Esophagus - Cancer - Genetic aspects
Download or read book Investigation of Tumor Suppressive Role of Chromosome 9 in Esophageal Squamous Cell Carcinoma written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Xvii, 144 leaves : ill. (some col.) ; 30 cm.
Download or read book Identification and Functional Analysis of Candidate Tumor Suppressor Genes in Chromosome 9 in Esophageal Squamous Cell Carcinoma Escc written by Chun-Lam Wong and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Identification and Functional Analysis of Candidate Tumor Suppressor Genes in Chromosome 9 in Esophageal Squamous Cell Carcinoma (ESCC)" by Chun-lam, Wong, 黃俊霖, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. DOI: 10.5353/th_b4520421 Subjects: Antioncogenes Esophagus - Cancer - Genetic aspects
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 942 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book How Tobacco Smoke Causes Disease written by United States. Public Health Service. Office of the Surgeon General and published by . This book was released on 2010 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report considers the biological and behavioral mechanisms that may underlie the pathogenicity of tobacco smoke. Many Surgeon General's reports have considered research findings on mechanisms in assessing the biological plausibility of associations observed in epidemiologic studies. Mechanisms of disease are important because they may provide plausibility, which is one of the guideline criteria for assessing evidence on causation. This report specifically reviews the evidence on the potential mechanisms by which smoking causes diseases and considers whether a mechanism is likely to be operative in the production of human disease by tobacco smoke. This evidence is relevant to understanding how smoking causes disease, to identifying those who may be particularly susceptible, and to assessing the potential risks of tobacco products.
Download or read book Index Medicus written by and published by . This book was released on 2003 with total page 1712 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1997 with total page 1860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Concise Handbook of Familial Cancer Susceptibility Syndromes written by and published by . This book was released on 2008 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Journal of Oncology written by and published by . This book was released on 2000 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tumor Suppressor Genes in Human Cancer written by David E. Fisher and published by Springer Science & Business Media. This book was released on 2000-10-26 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: David Fisher, MD, PhD, and an authoritative panel of academic, cutting-edge researchers review and summarize the current state of the field. Describing the broad roles of tumor suppressors from a perspective based in molecular biology and genetics, the authors detail the major suppressors and the pathways they regulate, including cell cycle progression, stress responses, apoptosis, and responses to DNA damage. Leading-edge and forward-looking, Tumor Suppressor Genes in Human Cancer illuminates what is currently known of tumor suppressor genes and their regulation, work that is already beginning to revolutionize cancer target elucidation, drug discovery, and treatment design.
Download or read book Molecular Genetic Pathology written by Liang Cheng and published by Springer. This book was released on 2013-03-05 with total page 1136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular Genetic Pathology, Second Edition presents up-to-date material containing fundamental information relevant to the clinical practice of molecular genetic pathology. Fully updated in each area and expanded to include identification of new infectious agents (H1N1), new diagnostic biomarkers and biomarkers for targeted cancer therapy. This edition is also expanded to include the many new technologies that have become available in the past few years such as microarray (AmpliChip) and high throughput deep sequencing, which will certainly change the clinical practice of molecular genetic pathology. Part I examines the clinical aspects of molecular biology and technology, genomics. Poharmacogenomics and proteomics, while Part II covers the clinically relevant information of medical genetics, hematology, transfusion medicine, oncology, and forensic pathology. Supplemented with many useful figures and presented in a helpful bullet-point format, Molecular Genetic Pathology, Second Edition provides a unique reference for practicing pathologists, oncologists, internists, and medical genetisists. Furthermore, a book with concise overview of the field and highlights of clinical applications will certainly help those trainees, including pathology residents, genetics residents, molecular pathology fellows, internists, hematology/oncology fellows, and medical technologists in preparing for their board examination/certification.
Download or read book Bipartite Graphs and Their Applications written by Armen S. Asratian and published by Cambridge University Press. This book was released on 1998-07-13 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book which deals solely with bipartite graphs. Together with traditional material, the reader will also find many new and unusual results. Essentially all proofs are given in full; many of these have been streamlined specifically for this text. Numerous exercises of all standards have also been included. The theory is illustrated with many applications especially to problems in timetabling, Chemistry, Communication Networks and Computer Science. For the most part the material is accessible to any reader with a graduate understanding of mathematics. However, the book contains advanced sections requiring much more specialized knowledge, which will be of interest to specialists in combinatorics and graph theory.
Download or read book Atlas of Genodermatoses written by Ruggero Caputo and published by CRC Press. This book was released on 2005-12-12 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: A lavishly illustrated guide to almost 200 inherited diseases of the skin, hair, and nails. Each entry includes synonyms, age of onset, clinical findings, complications, course, laboratory findings, diagnosis, therapy, and key references, adding up to far more than just a collection of photographs. In addition to being a clinical primer, this is also a work of scientific research and contains the first printed description of two new syndromes. The fast-moving world of genetic research means that the latest genetic correlations, included here, render previous texts out of date. All specialists in Dermatology and Pediatrics should find this an invaluable front-line resource in the clinic.
Download or read book Advances in Molecular Oncology written by Fabrizio d'Adda di Fagagna and published by Springer Science & Business Media. This book was released on 2007-07-18 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 2nd Annual IFOM-IEO Meeting on Cancer. This is a new meeting, it has about 200 attendees from Australia, Austria, Belgium, Brazil, Canada, England, France, Germany, Greece, Ireland, Italy, Japan, Netherlands, Spain, Sweden, Switzerland, and the USA. The 2nd IFOM-IEO international meeting on cancer will provide a forum in which the world’s leading cancer researchers and young scientists will discuss the latest advances in molecular oncology. The impact of recent breakthroughs in basic research and of emerging technologies on molecular medicine in cancer will be highlighted.
Download or read book Fanconi Anemia written by ... Schindler-Hoehn and published by Karger Medical and Scientific Publishers. This book was released on 2007-01-01 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fanconi anemia (FA) is a rare genetic disease discovered 80 years ago by Guido Fanconi, an eminent Swiss pediatrician. It is characterized by short stature, skeletal anomalies, increased incidence of solid tumors and leukemias, bone marrow failure and cellular sensitivity to DNA damaging agents. Following a historical account, exemplary case reports and the current status of FA genes and their mutations, this volume discusses neoplasia in FA as well as current approaches to pre- and postnatal diagnosis. Further topics include revertant mosaicism as a kind of 'natural gene therapy' and hematopoietic stem cell transplantation as the only curative approach in FA. The final chapters investigate evolutionary aspects of the FA genes with special emphasis on the avian genome and the involvement of FA genes in recombinational types of DNA repair. Physicians and researchers in the fields of pediatrics, hematology, cancer, genetics, DNA repair and aging will benefit from understanding this disease, which illustrates the complex network of genomic maintenance systems that protect us from cancer and premature aging.
