Expression of DNA double-strand break repair proteins predicts the response and prognosis of colorectal cancer patients undergoing oxaliplatin-based chemotherapy

DNA intrastrand cross-linking agents such as oxaliplatin induce DNA double-strand breaks (DSBs) during DNA repair and replication. In the present study, we hypothesized that DNA intrastrand cross-linking agents may significantly benefit colorectal cancer patients with deficiencies in DSB repair. Sev...

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Veröffentlicht in:Oncology reports 2016-03, Vol.35 (3), p.1349-1355
Hauptverfasser: IHARA, KEISUKE, YAMAGUCHI, SATORU, UENO, NOZOMI, TANI, YUKIKO, SHIDA, YOSUKE, OGATA, HIDEO, DOMEKI, YASUSHI, OKAMOTO, KENTARO, NAKAJIMA, MASANOBU, SASAKI, KINRO, TSUCHIOKA, TAKASHI, MITOMI, HIROYUKI, KATO, HIROYUKI
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container_end_page 1355
container_issue 3
container_start_page 1349
container_title Oncology reports
container_volume 35
creator IHARA, KEISUKE
YAMAGUCHI, SATORU
UENO, NOZOMI
TANI, YUKIKO
SHIDA, YOSUKE
OGATA, HIDEO
DOMEKI, YASUSHI
OKAMOTO, KENTARO
NAKAJIMA, MASANOBU
SASAKI, KINRO
TSUCHIOKA, TAKASHI
MITOMI, HIROYUKI
KATO, HIROYUKI
description DNA intrastrand cross-linking agents such as oxaliplatin induce DNA double-strand breaks (DSBs) during DNA repair and replication. In the present study, we hypothesized that DNA intrastrand cross-linking agents may significantly benefit colorectal cancer patients with deficiencies in DSB repair. Seventy-eight patients with metastatic or recurrent colorectal cancer who had measurable target lesions and who underwent resection for primary colorectal cancer in our institution between April 2007 and March 2013 were included in the present study. The median age was 64.5 years, and the cohort consisted of 49 males and 29 females. The median progression-free survival (PFS) was 10.9 months. The expression of DSB repair proteins such as RAD51 and MRE11 was investigated by immunohistochemistry, and associations between RAD51 and MRE11 expression and clinicopathological factors or chemotherapeutic effect were assessed. MRE11-negative cases and RAD51-negative cases achieved significantly better tumor reduction compared with cases with positive expression. Cases with negative expression of both proteins or negative expression of either protein had significantly longer PFS than cases with positive expression for both proteins. In conclusion, DSB repair protein expression-negative colorectal cancer cases may be more highly sensitive to chemotherapy, and thus DSB repair protein expression may be a useful prognostic indicator for colorectal cancer patients.
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Cases with negative expression of both proteins or negative expression of either protein had significantly longer PFS than cases with positive expression for both proteins. 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subjects Adult
Age
Aged
Biomarkers
Cancer therapies
Chemotherapy
Colorectal cancer
Colorectal Neoplasms - drug therapy
Colorectal Neoplasms - genetics
Colorectal Neoplasms - pathology
Deoxyribonucleic acid
Development and progression
Disease-Free Survival
DNA
DNA Breaks, Double-Stranded - drug effects
DNA damage
DNA Damage - genetics
DNA Repair - genetics
DNA-Binding Proteins - biosynthesis
DNA-Binding Proteins - genetics
Drug metabolism
DSB repair protein expression pattern
Female
Females
Gender
Gene expression
Gene Expression Regulation, Neoplastic - drug effects
Genetic aspects
Growth factors
Health aspects
Histology
Humans
immunohistochemistry
Male
Medical prognosis
Metastasis
Middle Aged
MRE11
MRE11 Homologue Protein
Multivariate analysis
Neoplasm Recurrence, Local - drug therapy
Neoplasm Recurrence, Local - genetics
Neoplasm Recurrence, Local - pathology
Organoplatinum Compounds - administration & dosage
Oxaliplatin
Patients
Prognosis
Protein expression
Proteins
RAD51
Rad51 Recombinase - biosynthesis
Rad51 Recombinase - genetics
Rodents
title Expression of DNA double-strand break repair proteins predicts the response and prognosis of colorectal cancer patients undergoing oxaliplatin-based chemotherapy
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