Abstract:
:Cisplatin is a potent DNA-damaging agent that has demonstrated anticancer activities against several tumors. However, manifestation of cellular resistance is a major obstacle in anticancer therapy that severely limits the curative potential of cisplatin. Therefore, understanding the molecular basis of cisplatin resistance could significantly improve the clinical efficacy of this anticancer agent. Here, we employed Saccharomyces cerevisiae as a model organism to study cisplatin resistance mechanisms and describe a one-step cisplatin selection to identify and characterize novel cisplatin resistance genes. Screening a multicopy yeast genomic library enabled us to isolate several yeast clones for which we could confirm that the cisplatin resistance phenotype was linked to the introduced fragment. In a first attempt, a number of open reading frames could be identified. Among these genes, PDE2 and ZDS2 were repeatedly identified as genes whose overexpression confers cellular resistance to cisplatin. PDE2, encoding cAMP-phosphodiesterase 2, is of particular interest because the overexpression of this yeast gene is known to induce cisplatin resistance in mammalian cells as well, providing proof of the principle of our experimental approach. In addition, the identification of PDE2 shows that our yeast screening system can directly be informative for drug resistance in mammalian cells.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Burger H,Capello A,Schenk PW,Stoter G,Brouwer J,Nooter Kdoi
10.1006/bbrc.2000.2361subject
Has Abstractpub_date
2000-03-24 00:00:00pages
767-74issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(00)92361-1journal_volume
269pub_type
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