Croner, RS and Förtsch, T and Brückl, WM and Rödel, F and Rödel, C and Papadopoulos, T and Brabletz, T and Kirchner, T and Sachs, M and Behrens, J and Klein-Hitpass, L and Stürzl, M and Hohenberger, W and Lausen, B (2008) Molecular Signature for Lymphatic Metastasis in Colorectal Carcinomas. Annals of Surgery, 247 (5). pp. 803-810. DOI https://doi.org/10.1097/sla.0b013e31816bcd49
Croner, RS and Förtsch, T and Brückl, WM and Rödel, F and Rödel, C and Papadopoulos, T and Brabletz, T and Kirchner, T and Sachs, M and Behrens, J and Klein-Hitpass, L and Stürzl, M and Hohenberger, W and Lausen, B (2008) Molecular Signature for Lymphatic Metastasis in Colorectal Carcinomas. Annals of Surgery, 247 (5). pp. 803-810. DOI https://doi.org/10.1097/sla.0b013e31816bcd49
Croner, RS and Förtsch, T and Brückl, WM and Rödel, F and Rödel, C and Papadopoulos, T and Brabletz, T and Kirchner, T and Sachs, M and Behrens, J and Klein-Hitpass, L and Stürzl, M and Hohenberger, W and Lausen, B (2008) Molecular Signature for Lymphatic Metastasis in Colorectal Carcinomas. Annals of Surgery, 247 (5). pp. 803-810. DOI https://doi.org/10.1097/sla.0b013e31816bcd49
Abstract
Purpose: TNM-staging of colorectal carcinomas (CRC) relies on the histopathologic workup of the surgically removed specimen. If valid preoperative staging methods existed, patients could be selected for adequate individual therapy before surgery. Microarray techniques provide a promising tool to identify stage-specific molecular signatures on primary tumor biopsies. Material and Methods: Forty tumor samples of stage UICC I, II CRC, 40 samples of stage III CRC, and 25 biopsies of healthy mucosa (MC) were shock frozen in liquid nitrogen and underwent cryotomy after manual dissection for tumor tissue or MC enrichment. Isolated RNA was hybridized to GeneChips (HG-U133A, Affymetrix). Preprocessing of the microarray results was done by the robust multichip average method, and differentially expressed genes were selected by the maximum Wilcoxon statistic over 22,215 probe sets. The results were validated at an independent clinical study. Results: Fifty differently expressed genes between stage UICC I, II versus III CRC were identified respecting the selection criteria by allowing for multiple testing. The data validation by the independent clinical study confirmed our results. In comparison to MC, the genes were over- or underexpressed. They belong to various functional groups such as cellular adhesion, transporters, signaling, metabolism, protein synthesis, gene control, and immune system. Conclusion: Our large patient cohort and the data validation on an independent study identified 50 differentially expressed genes between CRC of different histopathologic stages. These findings indicate that molecular staging of CRC may be possible, which could help to guide individual CRC treatment before surgery.
Item Type: | Article |
---|---|
Uncontrolled Keywords: | Humans; Carcinoma; Colorectal Neoplasms; Lymphatic Metastasis; Neoplasm Staging; Oligonucleotide Array Sequence Analysis; Case-Control Studies; Cohort Studies; Reproducibility of Results; Gene Expression Profiling; Gene Expression; Aged; Middle Aged; Female; Male |
Subjects: | Q Science > QA Mathematics R Medicine > RC Internal medicine > RC0254 Neoplasms. Tumors. Oncology (including Cancer) |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Mathematics, Statistics and Actuarial Science, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 12 Dec 2011 11:39 |
Last Modified: | 16 May 2024 18:23 |
URI: | http://repository.essex.ac.uk/id/eprint/1759 |