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Transgenic mice as future tools in risk assessment
1Division of Research and Testing, Food and Drug Administration, Washington, D.C. 20204.
Abstract:
Historically, mice have served a routine and useful purpose in the research, development, and testing of biologicals, chemicals, and drugs for efficacy, toxicity, and carcinogenic risk. The literature is replete with examples using mice to study organic compounds both in short-term tests involving tumor initiation and promotion and in long-term experiments dealing with fertility, reproduction, and teratology. During the past two decades, a virtual explosion of advances has occurred in modern biology that includes the discoveries of retroviruses, oncogenes, DNA restriction enzymes, nucleotide sequence analyses, and microinjection techniques. Fusion of these milestones in genetic, molecular, and cell biology with recent developments in mouse embryology has opened novel avenues and methods of experimentation as significant additions to the risk assessment armamentarium that currently uses both prokaryotes and eukaryotes. Some promising directions afforded by transgenic mice as powerful future tools in risk assessment will be summarized below.
Insights
Mice are crucial for biological research, aiding in drug efficacy and toxicity testing. Advances in genetic and molecular biology have led to the development of transgenic mice, offering powerful new tools for risk assessment.
Area of Science:
- Toxicology
- Genetics
- Molecular Biology
Background:
- Mice have a long history in biological research, including efficacy, toxicity, and carcinogenicity testing of chemicals and drugs.
- Traditional research utilized mice for short-term tumor initiation studies and long-term fertility, reproduction, and teratology experiments.
Purpose of the Study:
- To summarize promising future directions for risk assessment using transgenic mice.
- To highlight the integration of modern biological advances with mouse embryology for novel experimental methods.
Main Methods:
- Review of historical and recent advancements in genetic, molecular, and cell biology.
- Integration of discoveries such as retroviruses, oncogenes, DNA restriction enzymes, and microinjection techniques.
- Application of these advancements to mouse embryology for experimental innovation.
Main Results:
- Modern biological advances have significantly expanded the utility of mice in research.
- Transgenic mice represent a powerful new class of tools for biological and toxicological risk assessment.
- Novel experimental avenues have been opened by combining genetic engineering with mouse models.
Conclusions:
- Transgenic mice offer enhanced capabilities for risk assessment beyond traditional methods.
- The fusion of molecular biology and mouse embryology provides innovative approaches to studying biologicals, chemicals, and drugs.
- Future research directions emphasize the potential of transgenic mice in expanding the risk assessment armamentarium.