Relationship between TYMS and ERCC1 mRNA expression and in vitro chemosensitivity in colorectal cancer. 2011

Yong Beom Cho, and Hyuk Jun Chung, and Woo Yong Lee, and Sung Ho Choi, and Hee Cheol Kim, and Seong Hyeon Yun, and Ho-Kyung Chun
Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong, Gangnam-gu, Seoul 135-710, Korea.

OBJECTIVE The aim of this study was to determine whether the relative mRNA expressions of the thymidylate synthase (TYMS) and the excision repair cross-complementing 1 (ERCC1) genes are associated with in vitro chemosensitivity to 5-fluorouracil (5-FU) and oxaliplatin in colorectal cancer, respectively. METHODS This study included 67 patients with pathologic TNM stage II, III, and IV. TYMS and ERCC1 mRNA expression was determined using real-time reverse transcriptase-polymerase chain reaction (RT-PCR). The chemosensitivity was examined using an ATP-based chemotherapy response assay. A high response was defined as a response producing ≥40% reduction in ATP. RESULTS The mean level of TYMS mRNA expression in the groups with low and high response to 5-FU was 2.35×10(-3) ± 2.16×10(-3) 2(-(ΔCt)) and 4.54×10(-3) ± 2.46×10(-3) 2(-(ΔCt)), respectively. The mean level of ERCC1 mRNA expression in the groups with low and high response to oxaliplatin was 13.92×10(-3) ± 9.90×10(-3) 2(-(ΔCt)) and 23.59×10(-3) ± 5.88×10(-3) 2(-(ΔCt)), respectively. Groups with high response to 5-FU and oxaliplatin had significantly higher expression of TYMS and ERCC1 mRNA, respectively (p<0.01 and p=0.01, respectively). CONCLUSIONS High expression of TYMS and ERCC1 mRNA was associated with better in vitro chemosensitivity to 5-FU and oxaliplatin, respectively, in patients with colorectal cancer.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009364 Neoplasm Recurrence, Local The local recurrence of a neoplasm following treatment. It arises from microscopic cells of the original neoplasm that have escaped therapeutic intervention and later become clinically visible at the original site. Local Neoplasm Recurrence,Local Neoplasm Recurrences,Locoregional Neoplasm Recurrence,Neoplasm Recurrence, Locoregional,Neoplasm Recurrences, Local,Recurrence, Local Neoplasm,Recurrence, Locoregional Neoplasm,Recurrences, Local Neoplasm,Locoregional Neoplasm Recurrences,Neoplasm Recurrences, Locoregional,Recurrences, Locoregional Neoplasm
D009944 Organoplatinum Compounds Organic compounds which contain platinum as an integral part of the molecule. Compounds, Organoplatinum
D011379 Prognosis A prediction of the probable outcome of a disease based on a individual's condition and the usual course of the disease as seen in similar situations. Prognostic Factor,Prognostic Factors,Factor, Prognostic,Factors, Prognostic,Prognoses
D002288 Adenocarcinoma, Mucinous An adenocarcinoma producing mucin in significant amounts. (From Dorland, 27th ed) Carcinoma, Colloid,Carcinoma, Mucinous,Adenocarcinomas, Mucinous,Carcinomas, Colloid,Carcinomas, Mucinous,Colloid Carcinoma,Colloid Carcinomas,Mucinous Adenocarcinoma,Mucinous Adenocarcinomas,Mucinous Carcinoma,Mucinous Carcinomas
D004268 DNA-Binding Proteins Proteins which bind to DNA. The family includes proteins which bind to both double- and single-stranded DNA and also includes specific DNA binding proteins in serum which can be used as markers for malignant diseases. DNA Helix Destabilizing Proteins,DNA-Binding Protein,Single-Stranded DNA Binding Proteins,DNA Binding Protein,DNA Single-Stranded Binding Protein,SS DNA BP,Single-Stranded DNA-Binding Protein,Binding Protein, DNA,DNA Binding Proteins,DNA Single Stranded Binding Protein,DNA-Binding Protein, Single-Stranded,Protein, DNA-Binding,Single Stranded DNA Binding Protein,Single Stranded DNA Binding Proteins
D004720 Endonucleases Enzymes that catalyze the hydrolysis of the internal bonds and thereby the formation of polynucleotides or oligonucleotides from ribo- or deoxyribonucleotide chains. EC 3.1.-. Endonuclease
D005260 Female Females
D005472 Fluorouracil A pyrimidine analog that is an antineoplastic antimetabolite. It interferes with DNA synthesis by blocking the THYMIDYLATE SYNTHETASE conversion of deoxyuridylic acid to thymidylic acid. 5-FU,5-FU Lederle,5-FU Medac,5-Fluorouracil,5-Fluorouracil-Biosyn,5-HU Hexal,5FU,Adrucil,Carac,Efudex,Efudix,Fluoro-Uracile ICN,Fluoroplex,Fluorouracil Mononitrate,Fluorouracil Monopotassium Salt,Fluorouracil Monosodium Salt,Fluorouracil Potassium Salt,Fluorouracil-GRY,Fluorouracile Dakota,Fluorouracilo Ferrer Far,Fluoruracil,Fluracedyl,Flurodex,Haemato-FU,Neofluor,Onkofluor,Ribofluor,5 FU Lederle,5 FU Medac,5 Fluorouracil,5 Fluorouracil Biosyn,5 HU Hexal,Dakota, Fluorouracile,Fluoro Uracile ICN,Fluorouracil GRY,Haemato FU

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