Download or read book p53 Protocols written by Sumitra Deb and published by Springer Science & Business Media. This book was released on 2008-02-02 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the discovery of p53 as a tumor suppressor, numerous methods have evolved to reveal the unique structural features and biochemical functions of this protein. Several unique properties of p53 posed a challenge to understa- ing its normal function in the initial phase of its research. The low levels of p53 in normal cells, its stabilization under situations of genotoxic stress, induction of growth arrest, and apoptosis with stabilization of the protein, obstructed the visibility of its normal, unmutated function. The property of p53 that can sense a promoter and transactivate or inhibit is still not well understood. It is still not known whether it is the absence of the protein that causes tumorigenesis, or if its mutants have a dominant role in inducing cancer. p53 Protocols comprises eighteen chapters for the study of the diverse properties of p53 and related proteins. The methods included are invaluable for delineating the function of other proteins that may function as tumor suppr- sors or growth suppressors. The chapters are not presented in any schematic order, for the importance and diversity of the functions of p53 make it imp- sible to organize them suitably. We have made a sincere effort to collect the methods most useful to those investigators working on tumor suppressors or growth suppressors. The purpose of p53 Protocols is not only to provide investigators with methods to analyze similar biochemical functions, but also to familiarize them with the associated problems that arose during the course of investigations.

Download or read book The p53 Tumor Suppressor Pathway and Cancer written by Gerard P. Zambetti and published by Springer Science & Business Media. This book was released on 2007-07-03 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current year (2004) marks the Silver Anniversary of the discovery of the p53 tumor suppressor. The emerging ?eld ?rst considered p53 as a viral antigen and then as an oncogene that cooperates with activated ras in transforming primary cells in culture. Fueling the concept of p53 acting as a transforming factor, p53 expression was markedly elevated in various transformed and tumorigenic cell lines when compared to normal cells. In a simple twist of fate, most of the studies conducted in those early years inadvertently relied on a point mutant of p53 that had been cloned from a normal mouse genomic library. A bona ?de wild-type p53 cDNA was subsequently isolated, ironically, from a mouse teratocarcinoma cell line. A decade after its discovery, p53 was shown to be a tumor suppressor that protects against cancer. It is now recognized that approximately half of all human tumors arise due to mutations within the p53 gene. As remarkable as this number may seem, it signi?cantly underrepresents how often the p53 pathway is targeted during tumorigenesis. It is my personal view, as well as many in the p53 ?eld, that the p53-signaling pathway is corrupted in nearly 100% of tumors. If you are interested in understanding cancer and how it develops, you must begin by studying p53 and its pathway. After demonstrating that p53 functions as a tumor suppressor the ?eld exploded and p53 became a major focus of scientists around the world.

Download or read book Methods in Molecular Biology p53 protocols written by John M. Walker and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The P53 Protein written by Guillermina Lozano and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Decades of research on the tumor suppressor p53 have revealed that it plays a significant role as a "guardian of the genome," protecting cells against genotoxic stress. In recent years, p53 research has begun to move into the clinic in attempts to understand how p53 is frequently inactivated in-and sometimes even promotes-human cancer. Written and edited by experts in the field, this collection from Cold Spring Harbor Perspectives in Medicine covers the rapid progress that has recently been made in basic and clinical research on p53. The contributors review new observations about its basic biology, providing updates on the functions of its isoforms and domains, the myriad stresses and signals that trigger its activation or repression, and its downstream effects on genome stability and the cell cycle that enforce tumor suppression in different cell and tissue types. They also discuss how p53 dysfunction contributes to cancer, exploring the various inherited and somatic mutations in the human TP53 gene, the impact of mutant p53 proteins on tumorigenesis, and the prognostic value and clinical outcomes of these mutations. Drugs that are being developed to respond to tumors harboring aberrant p53 are also described. This book is therefore essential reading for all cancer biologists, cell and molecular biologists, and pharmacologists concerned with the treatment of this disease.

Download or read book p53 written by Ayeda Ayed and published by Springer Science & Business Media. This book was released on 2010-12-16 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our understanding of human cancer in the past 40 years has been driven by linking innovative concepts and cutting edge technologies to key problems identified by clinical research. Some of the successes in cancer genetics identified from clinical work have been the identification of specific gene deletions in human chromosomes, the use of PCR-based cloning methodologies to identify and clone human cancer genes, the validation of the human cancer genes using transgenetic technologies in the mouse, and the ability to sequence whole genomes that has recently allowed a collation of all somatic and germline mutations in a human genome. In the same generation, entirely different disciplines involved in basic life science research have used model organisms like yeast, flies, worms, and cancer causing animal viruses as tools to develop windows to see into the machinery of the cell life cycle. The discoveries of pro-apoptotic genes, oncogenes, and covalent control mechanisms like phosphorylation and ubiquitination using the tools of science and technology have all been awarded Nobel prizes for their contribution to our understanding of how cells work. The discovery of p53 using the tumor causing animal virus SV40 falls into this pioneering period of biological and medical research.

Download or read book 25 Years of p53 Research written by Pierre Hainaut and published by Springer Science & Business Media. This book was released on 2007-10-05 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: p53 has emerged as a key tumor suppressor and important target for novel cancer therapy. This book, written by world-leading p53 researchers including many of those who have shaped the field over the past 25 years, provides unique insights into the progress of the field and the prospects for better cancer diagnosis and therapy in the future.

Download or read book p53 Protocols written by Sumitra Deb and published by Humana. This book was released on 2003-06-20 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the discovery of p53 as a tumor suppressor, numerous methods have evolved to reveal the unique structural features and biochemical functions of this protein. Several unique properties of p53 posed a challenge to understa- ing its normal function in the initial phase of its research. The low levels of p53 in normal cells, its stabilization under situations of genotoxic stress, induction of growth arrest, and apoptosis with stabilization of the protein, obstructed the visibility of its normal, unmutated function. The property of p53 that can sense a promoter and transactivate or inhibit is still not well understood. It is still not known whether it is the absence of the protein that causes tumorigenesis, or if its mutants have a dominant role in inducing cancer. p53 Protocols comprises eighteen chapters for the study of the diverse properties of p53 and related proteins. The methods included are invaluable for delineating the function of other proteins that may function as tumor suppr- sors or growth suppressors. The chapters are not presented in any schematic order, for the importance and diversity of the functions of p53 make it imp- sible to organize them suitably. We have made a sincere effort to collect the methods most useful to those investigators working on tumor suppressors or growth suppressors. The purpose of p53 Protocols is not only to provide investigators with methods to analyze similar biochemical functions, but also to familiarize them with the associated problems that arose during the course of investigations.

Download or read book The P53 Family written by Arnold Jay Levine and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume offers a comprehensive review of the functions of the p53 family. The contributors examine the normal roles of these transcription factors, their evolution, the regulatory mechanisms that control p53 activity, and the part played by p53 mutations in tumorigenesis.

Download or read book p53 written by Mumtaz Anwar and published by BoD – Books on Demand. This book was released on 2022-09-28 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: p53 is a protein that plays an important role in the regulation of cell division and thereby offers protection to the cell against malignant transformation. This is the most well-studied and most appreciated role of p53, due to which the protein is famously known as the “guardian of the genome.” It is the most studied protein in all forms of cancer research, with much of this research investigating p53’s role in tumor suppression. However, research has also shown that p53 plays a role in a wide range of other cellular functions, like serving as a biomarker for environmental pollution. Even as a tumor suppressor and transcription factor, many aspects of p53 function are still obscure, and research in the field is continually attempting to shed light on these functions. This book examines and discusses the myriad roles of p53 and different aspects of its functions. Chapters examine p53 in cancer prevention, DNA repair, gene regulation, and more.

Download or read book Apoptosis and Cancer written by Gil Mor and published by Springer Science & Business Media. This book was released on 2007-10-11 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of Apoptosis and Cancer is to describe the performance of contemporary techniques for studying the biology of apoptosis and its role in cancer. The protocols described will aid both the academic laboratory interested in further characterizing the mechanisms of apoptosis, as well as the industry laboratory, aimed at identifying new target molecules or screening for new compounds with potential clinical use.

Download or read book p53 in the Clinics written by Pierre Hainaut and published by Springer Science & Business Media. This book was released on 2012-08-30 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project follows on the success of the book "25 years of p53", published by Springer in 2006. Since this publication, there have been considerable advances on the potential application of p53 into the clinics. The goal of this book is to capture these developments and to appeal to a clinical and medical audience beyond the one which was the primary target of "25 years of p53".

Download or read book SV40 Protocols written by Leda Raptis and published by Springer Science & Business Media. This book was released on 2008-02-02 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Simian virus 40 gained notoriety in the 1960s because it was found to be a contaminant of polio and adenovirus vaccines that had been administered to millions of healthy individuals worldwide. The public health implications of this revelation provided the initial impetus for an in-depth study of SV40 biology. Later work showed that SV40 DNA sequences as well as infectious virus are in fact found in human tumors and may have contributed to oncog- esis. It also turned out that SV40 uses mostly cellular machinery to carry out many steps in viral infection, which makes it a powerful probe for examining many fundamental questions in eukaryotic molecular biology. SV40 Pro- cols consolidates a number of well-tested step-by-step techniques in one v- ume; experts with hands-on experience in particular methods give detailed accounts of their optimized experimental protocols, so that the beginner, as well as more experienced researchers, may readily overcome problems of ambiguity often present in the literature. As with other DNA tumor viruses, the response of cultured cells to SV40 infection depends upon the species being infected. Monkey cells s- port virus production, which leads to their death, whereas rodent cells p- duce only the early proteins and acquire a transformed phenotype. Thus, SV40 Protocols is organized in two sections. The first relates to assays of the lytic cycle of the virus, and the second deals with transformation.

Download or read book P53 written by and published by . This book was released on 2011-08-11 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modulation of viral DNA replication by tumor supressor protein p53 written by Dina Lepik and published by . This book was released on 2000 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Molecular Toxicology Protocols written by Phouthone Keohavong and published by Springer Science & Business Media. This book was released on 2008-02-03 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of cutting-edge techniques for analyzing genotoxic exposure and detecting the resulting biological effects-including endogenous metabolites-up to and including the development of cancer. The authors emphasize analytical methods that can be specifically applied to human populations and patients. Among the applications detailed are the analysis of interactions between such cellular macromolecules as DNA and proteins and chemical and physical agents, the assessment of medically relevant toxicity, and the characterization of genetic alterations induced in transgenic animals by in vivo systems. There are also methods for the analysis of genotoxic exposure during gene expression, of cytotoxicity caused by the induction of apoptosis, of genetic alterations in reporter genes and oncogenes, early (premalignant) detection of altered oncogenes, and of individual variation in biotransformation and DNA repair capacity.

Download or read book p53 Suppressor Gene written by Tapas Mukhopadhyay and published by Springer. This book was released on 1995-05-01 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is about the p53 gene, one of the most frequently mutated or deleted genes in human cancers. The frequent occurrence of inactivated p53 implicates this gene product in the genesis of many human cancers. The p53 gene can suppress the growth of cancer cells and the transformation process by oncogenes. The p53 protein is a transcription factor that can repress or activate promoters containing one of three p53 DNA-binding motifs. The activity of p53 is regulated by phosphorylation and other transcription factors. Replacement of the p53 function or restoration of the p53 biochemical pathway is a focus of gene therapy.

Download or read book Quantifying the Energetics of Binding Between P53 and DNA Using Electrophoretic Mobility Shift Assays written by Leasha J. Schaub and published by . This book was released on 2012 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new class of proteins has been termed "intrinsically disordered" or "ID" for short. The proteins within this class appear to lack tertiary stability, though protein structure has been linked to function in the past. These ID proteins are also prevalent, especially in eukaryotic proteins (~30%) and transcriptional factors (~70%). The high occurrence of ID suggest that this natively unfolded motif has been evolutionary selected. One of these ID proteins is the tumor suppressor protein p53. The p53 protein is a transcription factor that plays a role in ensuring genomic integrity. p53 is a homotetramer made up of seven domains with only two of the seven domains being natively folded. The other five domains lack tertiary structure under physiological conditions. It has been seen that these ID domains play a role in p53 regulation, suggesting allosteric communication. p53 is highly studied due to its connection with cancer. In approximately 50% of human tumor cells there is a mutation within the p53 gene, leading to p53 to be highly studied. Because of p53's connection with cancer a database showing the frequency of mutations that effect p53 function is already available, making p53 a plausible model for how the ID motif plays a role in regulatory mechanisms. To under stand how p53 transduces signals a mutational screen on binding energetics will be done. Before this bigger project and to show practicality of its success, basic protocols need to be established. The main focus of this thesis is exactly that. In this body of work its shown that wild type p53 and hyperstable p53 can be expressed, purified and used in binding studies. While the wild type p53 seems to be unpredictble due to its ability to form tetramers, the hyperstable p53 shows promising results for continuation with the mutational screen.