title: Ferredoxin reductase: pharmacogenomic assessment in colorectal cancer.
abstract: Ferredoxin reductase (FDXR) is a putative contributor to TP53-mediated apoptosis from 5-fluorouracil chemotherapy through the generation of oxidative stress. With TaqMan real-time quantitative reverse transcription-PCR, this study established a significant difference in FDXR relative RNA expression level between tumor (median, 212.9 units) and normal tissues (median, 113.8 units) from 51 colorectal cancer patients (P < 0.001). Seven single nucleotide polymorphisms (SNPs) in the FDXR gene were discovered, with no significant difference in variant allele frequency between colon tumor and normal tissues (P > 0.05), and the common haplotypes for FDXR were not different between colon tumor and normal samples. No correlation was observed between FDXR genotype and RNA expression implying that the polymorphisms described in this study are not regulating FDXR expression in colon cancer. This genomic characterization provides the foundation for pharmacogenetic analysis of the impact of FDXR on chemotherapy for colorectal cancer.
authors.affiliation: Department of Medicine, Washington University School of Medicine and the Siteman Cancer Center, 660 South Euclid Avenue, St. Louis, MO 63110, USA.
authors.forename: Jinsheng
authors.initials: J
authors.lastname: Yu
authors.forename: Sharon
authors.initials: S
authors.lastname: Marsh
authors.forename: Ranjeet
authors.initials: R
authors.lastname: Ahluwalia
authors.forename: Howard L
authors.initials: HL
authors.lastname: McLeod
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015179:Colorectal Neoplasms / Q000188:drug therapy / Q000201:enzymology* / Q000235:genetics / Q000473:pathology; D005260:Female; D005287:Ferredoxin-NADP Reductase / Q000096:biosynthesis* / Q000235:genetics; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D012334:RNA, Neoplasm / Q000096:biosynthesis / Q000235:genetics
chemical_list: D012334:RNA, Neoplasm; D005287:Ferredoxin-NADP Reductase