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Fueled partially by large, well-publicized efforts such as the Human Genome Project, genomic research is a rapidly growing area in multiple biological disciplines, including toxicology. Much of this potential, however, has been discussed in the literature and at technical meetings only in relatively broad terms, making it difficult to assess exactl
The new field of toxicogenomics presents a potentially powerful set of tools to better understand the health effects of exposures to toxicants in the environment. At the request of the National Institute of Environmental Health Sciences, the National Research Council assembled a committee to identify the benefits of toxicogenomics, the challenges to achieving them, and potential approaches to overcoming such challenges. The report concludes that realizing the potential of toxicogenomics to improve public health decisions will require a concerted effort to generate data, make use of existing data, and study data in new waysâ€"an effort requiring funding, interagency coordination, and data management strategies.
To reduce the deleterious effects of environmental contamination, governments across the world have enacted regulations broadly conceived for entire populations. Information arising out of the Human Genome Project and other cutting-edge genetic research is shifting the policymaking process. This fascinating volume draws on experts from academia, government, industry, and nongovernmental organizations to examine the science of genomic research as applied to environmental policy. The first section explores environmental policy applications, including subpopulation genetic profiling, industrial regulations, and standardizing governmental evaluation of genomic data. The second section assesses from multiple angles the legal framework involved in applying genomics to environmental regulation. In the third section, the contributors review closely the implications of genomic research for occupational health, from disease prevention and genetic susceptibility to toxicants, to workers' rights and potential employment discrimination. A fourth section explores the bioethical and philosophical complications of bringing genetic data and research into nonclinical regulatory frameworks. Genomics and Environmental Regulation points to ways in which information on toxicology and genetics can be used to craft more precise and efficient regulations. -- Wendy Wagner, University of Texas
The latest tools for investigating stress response in organisms, genomic technologies provide great insight into how different organisms respond to environmental conditions. However, their usefulness needs to be tested, verified, and codified. Genomic Approaches for Cross-Species Extrapolation in Toxicology provides a balanced discussion drawn from
Toxicogenomics combines the use of toxicology and genomic sciences to elucidate chemical, toxic and environmental stressor effects on biological systems. Integrative toxicogenomics requires innovation in bioinformatics, statistics and systems toxicology and typically a combination of the utility of two of more of these disciplines to better understand molecular mechanisms involved in toxic responses. This Frontiers in Toxicogenomics Research Topic eBook focuses on integrative toxicogenomics more so at the late stage (analyzing each data set separately and then merging the results ) and brings together analyses that combine gene expression (microarray, TempO-Seq or RNA-Seq) with other data (biological assays, clinical chemistry, therapeutic categories or molecular pathways) or highlights data analytics that leverage bioinformatics and statistics. The eight articles illustrate the state-of-art in the field and the analysis of toxicogenomics data for a more comprehensive deduction of biological mechanisms and cellular functions associated with adverse outcomes from environmental exposures, chemicals and toxicants. However, it is clear that the field of integrative toxicogenomics needs considerably more attention paid to it in order to develop other clever ways of integrating the data for analysis.
Research over the past decade has demonstrated that TGx methods of various types can be used to discriminate modes of mutagenesis as a function of dose. TGx can quickly inform safety evaluation regarding potential mechanisms of conventional outcomes and can provide essential dose-response information. This can then be used to ascertain the sequence of key events in a putative mode of action as may apply in quantitative cancer risk assessment. With the increasing complexity of research in mode of action investigations it is important to gain a better understand of approaches to data integration and health risk assessment. Furthermore, it is essential to consider how novel test systems and newer methods and approaches may be used in future to gain a better understanding of mechanisms. Toxicogenomics in Predictive Carcinogenicity describes toxicogenomics methods in predictive carcinogenicity testing, mode of action and safety evaluation, and cancer risk assessment. It illustrates these methods using case studies that have yielded significant new information on compounds and classes of compounds that have proven difficult to evaluate using conventional methods alone. This book additionally covers current and potential toxicogenomic research using stem cells as well as new bioinformatics methods for drug discovery and environmental toxicology. This publication is an indispensable tool for postgraduates, academics and industrialists working in biochemistry, genomics, carcinogenesis, pathology, pharmaceuticals, food technology, bioinformatics, risk assessment and environmental toxicology.
Some of what we know about the health effects of exposure to chemicals from food, drugs, and the environment come from studies of occupational, inadvertent, or accident-related exposures. When there is not enough human data, scientists rely on animal data to assess risk from chemical exposure and make health and safety decisions. However, humans and animals can respond differently to chemicals, including the types of adverse effects experienced and the dosages at which they occur. Scientists in the field of toxicogenomics are using new technologies to study the effects of chemicals. For example, in response to a particular chemical exposure, they can study gene expression ("transcriptomics"), proteins ("proteomics") and metabolites ("metabolomics"), and they can also look at how individual and species differences in the underlying DNA sequence itself can result in different responses to the environment. Based on a workshop held in August 2004, this report explores how toxicogenomics could enhance scientists' ability to make connections between data from experimental animal studies and human health.
Toxicogenomics: Principles and Applications fills the need for a single, thorough text on the key breakthrough technologies in genomics, proteomics, metabolomics, and bioinformatics, and their applications to toxicology research. The first section following a general introduction is on genomics and toxicogenomics, and qPCR. The next sections are toxicoproteomics and metabolomics. The final section covers bioinformatics aspects, from databases to data integration strategies. A practical resource for specialists and non-specialists alike, this book includes numerous illustrations that support the textual explanations. It offers practical guidance to investigators wishing to pursue this line of research, and lists key relevant software and Internet resources.
This unique new text delivers a solid foundation for understanding the role of genomics in human health and in advances that promise to help improve the quality of human life. Unlike other works that focus mainly on toxicogenomic techniques, Genomics presents a thorough overview of the field in four major sections: 1) fundamentals of genes and genome structure, function, expression, variations, and genomic technology platforms; 2) applications of genomics in drug discovery and drug development, safety evaluation, genomic database maintenance, mining, and analysis, food safety monitoring, and translational toxicogenomics; 3) how regulatory agencies such as the FDA and EPA use genomic data in their safety evaluation; and 4) a summary of the current state and the future prospect of the science of genomics. With an international perspective and practical case studies, Genomics is the first resource to present essential discussion of theory and application for: eukaryotic genomes epigenomics translational genomics and biomarker development