OECD Guidelines for the Testing of Chemicals, Section 4
- ISSN :
- 2074-5788 (online)
- DOI :
The OECD Guidelines for the Testing of Chemicals is a collection of about 100 of the most relevant internationally agreed testing methods used by government, industry and independent laboratories to identify and characterise potential hazards of new and existing chemical substances, chemical preparations and chemical mixtures. They are a set of tools for professionals, used primarily in regulatory safety testing and subsequent chemical and chemical product notification and chemical registration. They can also be used for the selection and ranking of candidate chemicals during the development of new chemicals and products and in toxicology research. This group of tests covers health effects.
Test No. 480: Genetic Toxicology: Saccharomyces cerevisiae, Gene Mutation AssayClick to Access:
- Publication Date :
- 23 Oct 1986
- Pages :
- ISBN :
- 9789264071407 (PDF)
- DOI :
This assay may be used to measure gene mutation in yeast, a eukaryotic micro-organism. Strains of Saccharomyces cerevisiae have been developed which detect forward or reverse mutations.
A variety of haploid and diploid strains of the yeast can be used to measure the production of gene mutations induced by chemical agents (solid, liquid, vapour or gas). Stationary or growing cells are exposed to the test chemical with and without an exogenous mammalian metabolic activation system for up to 18 hours at 28°-37°C with shaking. After incubation for 4-7 days at 28°-30°C in the dark, plates are scored for survival and the induction of gene mutation. If the first experiment is negative, then a second experiment should be carried out using stationary phase cells. If the first experiment is positive, it is confirmed in an appropriate independent experiment. At least 5 adequately spaced concentrations of the test substance should be used. At least 3 replicate plates should be used per concentration for the assay of prototrophs produced by gene mutation and for viability.
NB. This Test Guideline will be deleted on 2nd April 2014.