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High pretherapeutic thymidylate synthetase and MRP-1 protein levels are associated with nonresponse to neoadjuvant chemotherapy in oesophageal adenocarcinoma patients.
J. Surg. Oncol. 102, 503-508 (2010)
BACKGROUND: The aim of this study was to determine whether pretherapeutic protein expression levels of the excision repair cross-complementing (ERCC1) enzyme, thymidylate synthetase (TS), multidrug-resistance protein 1 (MRP-1) and P-glycoprotein (P-gp) are associated with tumour response to cisplatin and fluorouracil (5-FU)-based neoadjuvant chemotherapy in oesophageal adenocarcinomas METHODS: The expression levels of ERCC1, TS, MDR-1 and P-gp were determined immunohistochemically in pretherapeutic tumour biopsies from 40 oesophageal adenocarcinoma patients and were correlated with histopathological tumour regression and with patient survival. Protein expression was compared to mRNA data, which was previously published for ERCC1, TS and MRP-1 and newly determined for the purpose of this study for MDR-1/P-gp. RESULTS: High-TS and -MRP-1 protein expression was correlated with tumour non-response to chemotherapy (P = 0.001 and P = 0.036, respectively). For ERCC-1 and P-gp, no association between pretherapeutic protein expression and response was found. There was no correlation between mRNA levels and protein expression for all investigated markers. Survival analysis revealed a trend towards increased survival for low-ERCC-1 expression (P = 0.079). CONCLUSIONS: The pattern of pretherapeutic expression of TS and MRP-1 is related to chemotherapy response in oesophageal adenocarcinoma patients. Immunohistochemical assessment of these markers may be helpful for response prediction.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Oesophageal adenocarcinoma; Chemotherapy; Thymidylate synthetase; MRP-1
Language
english
Publication Year
2010
HGF-reported in Year
2010
ISSN (print) / ISBN
0022-4790
e-ISSN
1096-9098
Journal
Journal of Surgical Oncology
Quellenangaben
Volume: 102,
Issue: 5,
Pages: 503-508
Publisher
Wiley
Reviewing status
Peer reviewed
Institute(s)
Institute of Pathology (PATH)
POF-Topic(s)
30504 - Mechanisms of Genetic and Environmental Influences on Health and Disease
Research field(s)
Enabling and Novel Technologies
PSP Element(s)
G-500300-001
PubMed ID
20589706
Erfassungsdatum
2010-07-23