Searching for potential biomarkers of cisplatin resistance in human ovarian cancer using a label-free LC/MS-based protein quantification method

Dawn P.G. Fitzpatrick, Jin Sam You, Kerry G. Bernis, Jean Pierre Wery, James R. Ludwig, Mu Wang

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

Platinum-based chemotherapy, such as cisplatin, is the primary treatment for ovarian cancer. However, drug resistance has become a major impediment to the successful treatment of ovarian cancer. To date, the molecular mechanisms of resistance to platinum-based chemotherapy remain unclear. In this study, we applied an LC/MS-based protein quantification method to examine the global protein expression of two pairs of ovarian cancer cell lines, A2780/A2780-CP (cisplatin-sensitive/ cisplatin-resistant) and 2008/2008-C13*5.25 (cisplatin-sensitive/ cisplatin-resistant). We identified and quantified over 2000 proteins from these cell lines and 760 proteins showed significant expression changes with a false discovery rate of less than 5% between paired groups. Based on the results we obtained, we suggest several potential pathways that may be involved in cisplatin resistance in human ovarian cancer. This study provides not only a new proteomic platform for large-scale quantitative protein analysis, but also important information for discovery of potential biomarkers of cisplatin resistance in ovarian cancer. Furthermore, these results may be clinically relevant for diagnostics, prognostics, and therapeutic improvement for ovarian cancer treatment.

Original languageEnglish (US)
Pages (from-to)246-263
Number of pages18
JournalProteomics - Clinical Applications
Volume1
Issue number3
DOIs
StatePublished - Mar 2007

Keywords

  • Cisplatin resistance
  • Label-free quantitative analysis
  • Mass spectrometry
  • Ovarian cancer

ASJC Scopus subject areas

  • Clinical Biochemistry

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