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| Status |
Public on Oct 29, 2010 |
| Title |
Suppression of statin effectiveness by copper and zinc in yeast and human cells |
| Organism |
Saccharomyces cerevisiae |
| Experiment type |
Expression profiling by array
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| Summary |
Lovastatin and other statins inhibit HMG-CoA reductase, which carries out an early step in the sterol biosynthesis pathway. Statins lower cholesterol and are widely prescribed to prevent heart disease, but like many drugs, they can interact with nutritionally acquired metabolites. To probe these interactions, we explored the effect of a diverse library of metabolites on statin effectiveness using a Saccharomyces cerevisiae model. In yeast, treatment with lovastatin results in reduced growth. We combined lovastatin with the library of metabolites and found that copper and zinc ions impaired the ability of the statin to inhibit yeast growth. Using an integrated genomic and metabolomic approach, we found that lovastatin plus metal synergistically upregulated some sterol biosynthesis genes. This altered pattern of gene expression resulted in greater flux through the sterol biosynthesis pathway and an increase in ergosterol levels. Each sterol intermediate level was correlated with expression of the upstream gene. Thus, the ergosterol biosynthetic response induced by statin is enhanced by copper and zinc. In cultured mammalian cells, these metals also rescued statin growth inhibition. Because copper and zinc impair the ability of statin to reduce sterol biosynthesis, dietary intake of these metals could have clinical relevance for statin treatment in humans.
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| Overall design |
There are 23 total samples comprising replicates of combinations of statin (5 ug/mL), CuSO4 (1mM), and ZnSO4 (2mM) treatments. There are three biological replicates. Within each biological replicate set, there are two conditions that were randomly chosen to be duplicated (i.e., technical replicates). An RNA sample consisting of a mix of RNA from all 6 experimental conditions was used as the reference.
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| Contributor(s) |
Fowler DM, Fields S |
| Citation(s) |
21085730 |
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| Submission date |
Oct 28, 2010 |
| Last update date |
Jul 14, 2016 |
| Contact name |
Douglas McKay Fowler |
| Organization name |
University of Washington
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| Department |
Genome Sciences
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| Lab |
Stanley Fields
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| Street address |
1705 NE Pacific St, Foege Building S313
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| City |
Seattle |
| State/province |
WA |
| ZIP/Postal code |
98195 |
| Country |
USA |
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| Platforms (1) |
| GPL9825 |
Agilent-016322 Yeast (V2) Gene Expression 8x15K Microarray (Feature Number version) |
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| Samples (23)
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| Relations |
| BioProject |
PRJNA134363 |
| Supplementary file |
Size |
Download |
File type/resource |
| GSE25004_RAW.tar |
29.7 Mb |
(http)(custom) |
TAR (of TXT) |
| Processed data included within Sample table |
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