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Tumor Biology |
Departments of Physiology [C. D. L., T. A.], Surgery [D. M. S., C. B.], Pathology [J. K. G., T. J. G.], and Pediatric Oncology [D. E. M., R. K., S. H.], University of Michigan, Ann Arbor, Michigan 48109
The molecular basis of pancreatic cancer is not understood. Previous attempts to determine the specific genes expressed in pancreatic cancer have been hampered by similarities between adenocarcinoma and chronic pancreatitis. In the current study, microarrays (Affymetrix) were used to profile gene expression in pancreatic adenocarcinoma (10), pancreatic cancer cell lines (7), chronic pancreatitis (5), and normal pancreas (5). Molecular profiling indicated a large number of genes differentially expressed between pancreatic cancer and normal pancreas but many fewer differences between pancreatic cancer and chronic pancreatitis, likely because of the shared stromal influences in the two diseases. To specifically identify genes expressed in neoplastic epithelium, we selected genes more highly expressed (>2-fold, p < 0.01) in adenocarcinoma compared with both normal pancreas and chronic pancreatitis and which were also highly expressed in pancreatic cancer cell lines. This strategy yielded 158 genes, of which 124 were not previously associated with pancreatic cancer. Quantitative-reverse transcription-PCR for two molecules, S100P and 14-3-3
, validated the microarray data. Support for the success of the neoplastic cell gene expression identification strategy was obtained by immunocytochemical localization of four representative genes, 14-3-3
, S100P, S100A6, and ß4 integrin, to neoplastic cells in pancreatic tumors. Thus, comparisons between pancreatic adenocarcinoma, pancreatic cancer cell lines, normal pancreas, and chronic pancreatitis have identified genes that are selectively expressed in the neoplastic epithelium of pancreatic adenocarcinoma. These data provide new insights into the molecular pathology of pancreatic cancer that may be useful for detection, diagnosis, and treatment.
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Y. Li, M. A. R. St. John, X. Zhou, Y. Kim, U. Sinha, R. C. K. Jordan, D. Eisele, E. Abemayor, D. Elashoff, N.-H. Park, et al. Salivary Transcriptome Diagnostics for Oral Cancer Detection Clin. Cancer Res., December 15, 2004; 10(24): 8442 - 8450. [Abstract] [Full Text] [PDF] |
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A. Guweidhi, J. Kleeff, N. Giese, J. E. Fitori, K. Ketterer, T. Giese, M. W. Buchler, M. Korc, and H. Friess Enhanced expression of 14-3-3sigma in pancreatic cancer and its role in cell cycle regulation and apoptosis Carcinogenesis, September 1, 2004; 25(9): 1575 - 1585. [Abstract] [Full Text] [PDF] |
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A. Lewis, M. Ough, L. Li, M. M. Hinkhouse, J. M. Ritchie, D. R. Spitz, and J. J. Cullen Treatment of Pancreatic Cancer Cells with Dicumarol Induces Cytotoxicity and Oxidative Stress Clin. Cancer Res., July 1, 2004; 10(13): 4550 - 4558. [Abstract] [Full Text] [PDF] |
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L. E. Jones, M. J. Humphreys, F. Campbell, J. P. Neoptolemos, and M. T. Boyd Comprehensive Analysis of Matrix Metalloproteinase and Tissue Inhibitor Expression in Pancreatic Cancer: Increased Expression of Matrix Metalloproteinase-7 Predicts Poor Survival Clin. Cancer Res., April 15, 2004; 10(8): 2832 - 2845. [Abstract] [Full Text] [PDF] |
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J. M. A. Moreira, P. Gromov, and J. E. Celis Expression of the Tumor Suppressor Protein 14-3-3{sigma} Is Down-regulated in Invasive Transitional Cell Carcinomas of the Urinary Bladder Undergoing Epithelial-to-Mesenchymal Transition Mol. Cell. Proteomics, April 1, 2004; 3(4): 410 - 419. [Abstract] [Full Text] [PDF] |
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N. Sato, N. Fukushima, A. Maitra, C. A. Iacobuzio-Donahue, N. T. van Heek, J. L. Cameron, C. J. Yeo, R. H. Hruban, and M. Goggins Gene Expression Profiling Identifies Genes Associated with Invasive Intraductal Papillary Mucinous Neoplasms of the Pancreas Am. J. Pathol., March 1, 2004; 164(3): 903 - 914. [Abstract] [Full Text] [PDF] |
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T. Arumugam, D. M. Simeone, A. M. Schmidt, and C. D. Logsdon S100P Stimulates Cell Proliferation and Survival via Receptor for Activated Glycation End Products (RAGE) J. Biol. Chem., February 13, 2004; 279(7): 5059 - 5065. [Abstract] [Full Text] [PDF] |
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R. D. Irwin, G. A. Boorman, M. L. Cunningham, A. N. Heinloth, D. E. Malarkey, and R. S. Paules Application of Toxicogenomics to Toxicology: Basic Concepts in the Analysis of Microarray Data Toxicol Pathol, January 1, 2004; 32(1_suppl): 72 - 83. [Abstract] [PDF] |
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J. J. Cullen, M. M. Hinkhouse, M. Grady, A. W. Gaut, J. Liu, Y. P. Zhang, C. J. Darby Weydert, F. E. Domann, and L. W. Oberley Dicumarol Inhibition of NADPH:Quinone Oxidoreductase Induces Growth Inhibition of Pancreatic Cancer via a Superoxide-mediated Mechanism Cancer Res., September 1, 2003; 63(17): 5513 - 5520. [Abstract] [Full Text] [PDF] |
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