Kolesar J, Huang W, Eickhoff J, Hahn K, Alberti D, Attia S, Schelman W, Holen K, Traynor A, Ivy P, Wilding G. Evaluation of mRNA by Q-RTPCR and protein expression by AQUA of the M2 subunit of ribonucleotide reductase (RRM2) in human tumors.
Cancer Chemother Pharmacol 2009;
64:79-86. [PMID:
18941749 PMCID:
PMC3043989 DOI:
10.1007/s00280-008-0845-0]
[Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2008] [Accepted: 09/23/2008] [Indexed: 10/21/2022]
Abstract
PURPOSE
The purpose of this study was to evaluate baseline RRM2 protein and gene expression in tumors of patients receiving 3-AP.
METHODS
Tumor blocks from patients enrolled in phase I and II clinical studies using 3-AP, were evaluated for RRM2 gene and protein expression by quantitative real time polymerase chain reaction (Q-RTPCR) and automated quantitative analysis (AQUA).
RESULTS
Esophageal and gastric cancers overexpressed RRM2 protein when compared to prostate cancer (Z-score, 0.68 +/- 0.94 SD, vs 0.41 +/- 0.84 SD, respectively; p = 0.04). Esophageal and gastric cancers also overexpressed RRM2 mRNA when compared to prostate cancer (relative gene expression 2.56 +/- 1.49 SD, vs 0.29 +/- 0.20 SD, respectively; p = 0.02). Protein and gene expression were moderately associated (Spearman's rank correlation = 0.30; p = 0.12).
CONCLUSION
RRM2 gene and protein expression varies by tumor type.
Collapse