Cancer Prevention and Intervention (CPI) Core Laboratory

The CPI Core Laboratory provides genetic toxicology testing services to help investigators identify dietary compounds with chemoprotective properties and to elucidate their inhibitory mechanism(s). Techniques include the Salmonella mutagenicity assay (Ames test), single-cell gel electrophoresis assay (Comet assay), and micronucleus assay, which enable investigators to assess the mutagenic, DNA-damaging, and clastogenic effects of chemicals. Using known mutagens or clastogens as positive controls, we study the potential beneficial activities of dietary compounds or other chemicals against those DNA-damaging agents. A histone deacetylase (HDAC) assay is available to identify dietary HDAC inhibitors, which are of interest in cancer chemoprotection.

These services are available to intramural or extramural (non-OSU) researchers. Please contact Dr. David Yu, CPI Core Lab Manager ( or 541-737-5082).

Oxidative/Nitrative Stress Core Laboratory (ONSL)

Oxidative and nitrative stress can be produced by inflammation, disease, or environmental exposure. The resulting reactive oxygen and nitrogen species can react with lipids, proteins, and nucleic acids to form molecules that can serve as “biomarkers” to reveal an individual’s state of health or the effectiveness of dietary or pharmaceutical interventions. For example, F2-isoprostanes and their metabolites are considered good biomarkers of free radical-induced lipid peroxidation. The ONSL has several high-performance liquid chromatographs (HPLCs) coupled to UV, fluorescence, electrochemical, and single- and triple-quadrupole mass spectrometer detectors for state-of-the-art chemical analysis of biomarkers, antioxidants, and drug metabolites. ONSL also has several solid-phase extraction robots for sample preparation.

These services are available to intramural and extramural investigators. Please contact Jaewoo Choi, ONSL Manager ( or 541-737-9376).

Healthy Aging Core Laboratory

The Healthy Aging Program (HAP) Core Laboratory is currently developing a new service to test the efficacy of vitamins, phytochemicals, and micronutrients to prolong health into advanced old age. We will use turquoise killifish (Nothobranchius furzeri, GRZ strain) as a model of vertebrate aging because their 3-4 month lifespan allows rapid collection of health-related data. The investigator will thus be able to determine the benefits of the nutrient under study over the life course. Researchers collaborating with the HAP Core Lab will be able to measure a variety of endpoints in conjunction with the ONSL and CCP Core Laboratories.

Please contact Kate Shay for further information (

Food Composition Laboratory

The Food Composition Laboratory provides chemical analyses of food composition and nutritional factors. We provide analyses of food, feed, or dietary supplement samples for vitamins, phytochemicals, and other compositional factors to intramural and extramural investigators. Please contact Bob Durst ( or 541-737-6490).