Download or read book Isolation of Novel Prostate Cancer Tumor Suppressor Genes in African American and Caucasian Men Thru Laser Microdissection and Representational Difference Analysis written by and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: We used RDA to identify homozygously deleted DNA clones within metastatic prostate cancer xenograft DNA, and found that all of the homozygously deleted clones mapped to a single region of chromosome 12p. We confirmed that the metastatic lesions from this patient also contained this homozygous deletion, and then analyzed this region in a series of 41 metastatic tumors from 19 patients, where we found that 50% of patients' tumors show loss. This 12p deletion occurs with similar frequency in caucasians and african-americans based on our small sample. We mapped this genomic region, and found that two previously identified potential candidate genes ETV(tel) and CDKN1B(p27) are located there. Analysis of these genes has revealed no sequence changes consistent with an important tumor suppressor role. Extensive analysis of p27 for possible mutational or methylation changes was negative. Major observations from our work include the finding of a homozygous deletion on chromosome 12p in metastatic prostate cancer, considered to be a major indicator that an important gene is nearby on chromosome 12p. Further analysis of this region revealed unexpected high degree of allelic loss in this region. Specific genes in the region were analyzed, and p27 appears to be the likely target, inactivated by loss of one copy. Further analysis was curtailed due to lack of funding.
Download or read book Isolation of Novel Prostate Cancer Tumor Suppressor Genes in African American and Caucasian Men Thru Laser Microdissection and Representation Difference Analysis written by and published by . This book was released on 1999 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Significant progress has been made for all three specific aims. Specific Aim 1: Obtaining metastatic prostate cancer DNA of quality sufficient for Representational Difference Analysis (RDA), has been achieved using alternate means. Specific Aim 2: Employ RDA to identify DNA regions which have been homozygously deleted, has been achieved with identification of a novel region of homozygous deletion on chromosome 12p (Cancer Research, 58, 5652-5655, 1998). Specific Aim 3: To prioritize regions of homozygous deletion based on frequency of deletion of this region in metastatic tumors, and to identify candidate genes within these regions, has been achieved, with previously unidentified deletion of the identified chromosome 12p region in 50% of metastatic prostate cancers studied (Genes, Chromosomes, and Cancer 25:270-276, 1999) . Examination of genes within this region suggests that p27 or TEL to be likely candidates. These results validate this approach and additional studies are underway to identify additional genomic regions of interest in metastatic prostate cancer.
Download or read book Racial Differences in Prostate Cancer Molecular Biology An Evaluation of Tumor Suppressor Genes in BCL2 P53 and RB in Black and Africans written by and published by . This book was released on 1999 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prostate Cancer is the most common cancer among African American males. Recent reports suggest that not only is the incidence higher than their white counterparts, but that they present at an earlier age with more diffuse disease, and have a higher morbidity and mortality. Our current study is designed to evaluate potential differences in tumor suppressor genes between cancers of non-Hispanic Whites and African Americans. We have selected the tumor suppressor genes BCL-2, p53 and Rb. We have selected cancers from America as well as South Africa to assess the potential for an increased virulence in African Americans compared to whites and Native Africans. In this initial grant we are funded to establish a laboratory and to prepare to write a Department of Defense grant that was submitted in the spring of 1999.
Download or read book Identification of Novel Prostate Cancer Causitive Gene Mutations by Representational Difference Analysis of Microdissected Prostate Cancer written by and published by . This book was released on 1999 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tissue from 23 radical prostatectomy operations has been procured. Microdissection of normal and cancer cells have been done for 2 specimens. Representational difference analysis has been completed on one sample yielding subtraction products which have been cloned and sequenced. Subsequent analysis showed that none of these products were from areas of homozygous deletion from the original tumor specimen. It was suspected that the published RDA protocol was not working properly. A control RDA with "spiked" target DNA sequences confirmed this. Using the same control DNA we have optimized the RDA protocol. The optimized protocol has been applied to two cases of primary prostate cancer, and the subtraction products are currently being analyzed. We have extended one of the stated goals of this project and will attempt to perform RDA on both RNA and DNA samples of primary prostate cancers. In this we can assay for transcriptional as well as genetic changes during prostate tumor progression. Towards this end, we have optimized an RNA extraction procedure from microdissected cells. We show that from as little as 2500 cells obtained from primary human tissue using laser capture microdissection we can isolate high molecular weight RNA suitable for this analysis.
Download or read book Comparison of Stroma associated Gene Expression in African American and Caucasian American Prostate Cancer written by and published by . This book was released on 2015 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Globally, prostate cancer is the most common invasive malignancy and the sixth leading cause of cancer-related death in men. Prostate cancer incidence is significantly higher in the United States compared to most other countries, due to dietary and environmental factors. Well-established risk factors for prostate cancer include increasing age, African ancestry, and a family history of prostate cancer1. African Americans have a higher incidence at a younger age, more aggressive forms of the disease, and shortest survival for all major cancers, and disparities persist despite an improved understanding of early detection, genetics, and socioeconomic risk factors1. Ethnicity/race is the major risk factor, after adjusting for age in this type of cancer. In prostate cancer, the tumor microenvironment (stroma) is considered to be a niche which favors tumor cell proliferation, survival, invasion, and metastasis2. Interaction with cancer cells can lead to genetic changes in stroma cells. Active stromal components mostly contain smooth muscle cells, fibroblasts, vascular endothelial cells, carcinoma-associated fibroblasts, and inflammatory cells3. Cancer-associated fibroblasts are functionally and structurally different from fibroblasts, which exist adjacent to the normal epithelium. These cells, when mixed with normal prostate epithelial cells, can induce their malignant transformation4. Microarray analyses have identified pathways that are significantly associated with tumor and stromal tissues in prostate cancer5. 20% of these pathways are extracellular matrix components, cell adhesion molecules, and epithelial to mesenchymal transition5. In addition previous studies analyzing microarray data showed significantly modified gene expression between African American and Caucasian American stromal tissue6. Tissue microarrays are a useful technique for profiling protein expression in a large number of samples and is applied in this thesis project for the purpose of the microarray results optimization, validation, and its racial disparity outcomes in prostate cancer, as well as to determine if products of differentially expressed genes in tumor versus stroma of prostate cancer tissues follow the same pattern as transcript levels. We were going to quantify the proteins of interest using immunohistochemistry in an independent cohort of African American and Caucasian American prostate cancer samples.
Download or read book Identification of Novel Prostate Causitive Gene Mutations by Representational Difference Analysis of Microdissected Prostate Cancer written by and published by . This book was released on 2002 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Representational difference analysis (RDA) was attempted on microdissected samples of human prostate cancer to identify areas of genomic homozygous deletion. Difference products were not reliably obtained with this procedure starting from DNA obtained from 5000 cells. When difference products were obtained, subsequent analysis showed that none corresponded to areas of homozygous deletion. To pursue an alternative strategy, oligonucleotide microarray analysis to identify genes that are down-regulated in malignant prostate tissue, procedures were evaluated that would allow the implementation of microarray analysis to microdissected prostate tissue samples. It was determined that approximately 10,000 cells is a reasonable compromise between the need to maximize input material and the time required to perform microdissection. Several amplification protocols and procedures were evaluated for efficacy of amplification and quality of oligonucleotide hybridization results. A working protocol is presented that will amplify mRNA from 10,000 cells to 70 ug after 2 rounds of amplification.
Download or read book Gene Discovery in Prostate Cancer Functional Identification and Isolation of PAC 1 a Novel Tumor Suppressor Gene Within Chromosome 10p written by Ann M. Killary and published by . This book was released on 2001 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose and scope of this project was to utilize a functional approach for the physical mapping and identification of a novel tumor suppressor gene for prostate cancer within chromosome l0p. The major findings include the development of a technology for serial microcell fusion to transfer defined lop fragments into a mouse A9 fibrosarcoma cell line. Once characterized by FISH and microsatellite analyses, the l0p fragments were subsequently transferred into PC-3H to generate a panel of microcell hybrid clones containing overlapping deletions of chromosome l0p. In vivo and micro satellite analyses of these PC hybrids identified a small chromosome lop fragment (an estimated 31 Mb in size inclusive of the centromere) that when transferred into the PC-3H background, resulted in significant tumor suppression and limited a region of functional tumor suppressor activity to chromosome 10p12.31-q11. This region coincides with a region of LOH demonstrated in prostate cancer. These studies demonstrate the utility of this approach as a powerful tool to limit regions of functional tumor suppressor activity. Furthermore, these data used in conjunction with data generated by the Human Genome Project lent a focused approach to identify candidate tumor suppressor genes involved in prostate cancer.
Download or read book Clinical Oncology written by Martin D. Abeloff and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A must-have reference, this new edition provides practical information on treatment guidelines, details of diagnosis and therapy, and personal recommendations on patient management from experts in the field. Consistently formatted chapters allow for a user-friendly presentation for quick access of key information by the practicing clinician. Completely updated, this new edition includes all of the latest developments in treatment strategies of medical, surgical and radiation oncologists.
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 Angiogenesis Assays written by Carolyn A. Staton and published by John Wiley & Sons. This book was released on 2007-01-11 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Angiogenesis, the development of new blood vessels from the existing vasculature, is essential for physiological growth and over 18,000 research articles have been published describing the role of angiogenesis in over 70 different diseases, including cancer, diabetic retinopathy, rheumatoid arthritis and psoriasis. One of the most important technical challenges in such studies has been finding suitable methods for assessing the effects of regulators of eh angiogenic response. While increasing numbers of angiogenesis assays are being described both in vitro and in vivo, it is often still necessary to use a combination of assays to identify the cellular and molecular events in angiogenesis and the full range of effects of a given test protein. Although the endothelial cell - its migration, proliferation, differentiation and structural rearrangement - is central to the angiogenic process, it is not the only cell type involved. the supporting cells, the extracellular matrix and the circulating blood with its cellular and humoral components also contribute. In this book, experts in the use of a diverse range of assays outline key components of these and give a critical appraisal of their strengths and weaknesses. Examples include assays for the proliferation, migration and differentiation of endothelial cells in vitro, vessel outgrowth from organ cultures, assessment of endothelial and mural cell interactions, and such in vivo assays as the chick chorioallantoic membrane, zebrafish, corneal, chamber and tumour angiogenesis models. These are followed by a critical analysis of the biological end-points currently being used in clinical trials to assess the clinical efficacy of anti-angiogenic drugs, which leads into a discussion of the direction future studies should take. This valuable book is of interest to research scientists currently working on angiogenesis in both the academic community and in the biotechnology and pharmaceutical industries. Relevant disciplines include cell and molecular biology, oncology, cardiovascular research, biotechnology, pharmacology, pathology and physiology.
Download or read book Molecular Epidemiology written by Paul A. Schulte and published by Academic Press. This book was released on 2012-12-02 with total page 609 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will serve as a primer for both laboratory and field scientists who are shaping the emerging field of molecular epidemiology. Molecular epidemiology utilizes the same paradigm as traditional epidemiology but uses biological markers to identify exposure, disease or susceptibility. Schulte and Perera present the epidemiologic methods pertinent to biological markers. The book is also designed to enumerate the considerations necessary for valid field research and provide a resource on the salient and subtle features of biological indicators.
Download or read book Laser Capture Microdissection written by Graeme I. Murray and published by Humana Press. This book was released on 2011-07-19 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser microdissection techniques have revolutionized the ability of researchers in general, and pathologists in particular, to carry out molecular analysis on specific types of normal and diseased cells and to fully utilize the power of current molecular technologies including PCR, microarrays, and proteomics. In second edition of Laser Capture Microdissection: Methods and Protocols, experts in the field provide the reader with practical advice on how to carry out tissue-based laser microdissection successfully in their own laboratory using the different laser microdissection systems that are available and to apply a wide range of molecular technologies. The individual chapters encompass detailed descriptions of the individual laser based micro-dissection systems. The downstream applications of the laser microdissected tissue described in the book include PCR in its many different forms as well as gene expression analysis including application to microarrays and proteomics. Written in the highly successful Methods in Molecular BiologyTM series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, Laser Capture Microdissection: Methods and Protocols, Second Edition is an ideal resource for researchers striving to move forward our understanding of normal physiology and pathology.
Download or read book Malignant Pleural Mesothelioma written by Ken O'Byrne and published by . This book was released on 2006 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides health professionals and scientists with a comprehensive overview of the mesothelioma - an asbestos induced malignancy. It includes chapters on epidemology, diagnosis, histopathology, radiology, surgery, chemotherapy, immune therapy, and radiotherapy as well as the molecular biology and future therapies.
Download or read book New Trends in Cancer for the 21st Century written by Antonio Llombart-Bosch and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Given the latest advances in cancer research, which includes basic research and its derived diagnostic, clinical, and therapeutic applications, the book New Trends in Cancer for the 21st Century is written by individuals such as molecular biologists, whose tasks are to decipher, after sequencing the human genome, those new genes and pathways involved in the carcinogenesis process; clinical and molecular pathologists, who apply these discoveries for the molecular diagnosis and characterization of the tumor; and clinical oncologists, who treat patients. Pharmacogenetics introduces new perspectives in the translational fields with the design of drugs against specific targets, which at this moment are in clinical trials phases. This book achieves a state of the art in every field of cancer research and discusses the new perspectives that will open the future for cancer treatment (basic research, new technologies, new drugs, therapies...). For this reason, the book is intended for pathologists, clinicians, and biologists, as well as fellows and students of physiology and medicine.
Download or read book Gaseous Molecular Ions written by Eugen Illenberger and published by Springer Science & Business Media. This book was released on 1992-05-26 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most of the matter in our solar system, and, probably, within the whole universe, exists in the form of ionized particles. On the other hand, in our natural environ ment, gaseous matter generally consists of neutral atoms and molecules. Only under certain conditions, such as within the path oflightning or in several technical devices (e. g. gas discharges, rocket engines, etc. ) will some of the atoms and molecules be ionized. It is also believed that the chemistry of the earth's troposphere predomi nantly proceeds via reactions between neutral particles. (The complex system of atmospheric chemistry will be treated in one of the forthcoming volumes to this series. ) Why, then, are ions considered so important that hundreds oflaboratories all over the world (including some of the most prestigious) are involved in research pro grams on ions, covering many different facets, from biochemistry to physics? One may obtain as many different answers as there are research groups busy in this field. There is, however, one simple, common feature which makes it attractive to work with ions: since they carry one or more net elementary charges, they can easily be gui ded, focused or separated by appropriate electric and magnetic fields, and, last but not least, they can easily be detected. Apart from these advantages, which are welcome and appreciated by the researcher, the study of molecular ions can provide insight into very fundamental aspects of the general behavior of molecules.
Download or read book Targeted Therapies in Cancer written by Francesco Colotta and published by Springer Science & Business Media. This book was released on 2007-12-05 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Billions of dollars are spent every year on research into targeted therapies for cancer. That’s why it’s more than ever crucial for the thousands of scientists working in the field to keep right up to date with the cutting edge. This fascinating collection of material goes a long way to helping them do so, featuring as it does contributions to a crucial international meeting in Italy. The meeting provided a forum for scientists and clinicians working in cancer drug discovery and therapy to share their opinions and experiences. The text here offers readers an overview of diverse approaches, ranging from drug discovery to cellular therapy. Overall, the book addresses the key question of whether ultimately targeted therapy in cancer will be a myth or a reality.
Download or read book Imaging in Oncological Urology written by Jean J. M. C. H. Rosette and published by Springer Science & Business Media. This book was released on 2008-11-23 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: A hugely important book that details significant changes in imaging in oncological conditions related to the bladder, prostate and kidneys. The sole focus is on oncology in urology, mainly Ultrasound and MRI, with organ-oriented topics. The latest technologies on imaging are included to better identify carcinomatous lesions and lymph node metastases. Each chapter includes a section that outlines the optimal imaging approach, providing an algorithm for imaging per disease entity, and according to the evidence-based chronological and diagnostic follow-up.
