TY - JOUR
T1 - Gene expression profiles of microdissected pancreatic ductal adenocarcinoma
AU - Grützmann, Robert
AU - Foerder, Melanie
AU - Alldinger, Ingo
AU - Staub, Eike
AU - Brümmendorf, Thomas
AU - Röpcke, Stefan
AU - Li, Xinzhong
AU - Kristiansen, Glen
AU - Jesnowski, Ralf
AU - Sipos, Bence
AU - Löhr, Matthias
AU - Lüttges, Jutta
AU - Ockert, Detlef
AU - Klöppel, Günter
AU - Saeger, Hans Detlev
AU - Pilarsky, Christian
N1 - Funding Information:
Acknowledgements The authors would like to thank I. Klaman, E. Heiden and their colleagues at metaGen for their assistance, K. Dege and G. Faulmann for critical reading of the manuscript, as well as Alfred E. Neumann, whose comments were always appreciated. This paper was supported by Deutsche Krebshilfe (70–2937-SaI).
PY - 2003/10
Y1 - 2003/10
N2 - In a search for new molecular markers of pancreatic ductal adenocarcinoma (PDAC), we compared the gene expression profiles of seven pancreatic carcinomas and one carcinoma of the papilla Vateri with those of duct cells from three non-neoplastic pancreatic tissues. In addition, the human pancreatic duct cell line and five PDAC cell lines (AsPC-1, BxPC-3, Capan-1, Capan-2, HPAF) were examined. RNA was extracted from microdissected tissue or cultured cell lines and analysed using a custom-made Affymetrix Chip containing 3023 genes, of which 1000 were known to be tumour associated. Hierarchical clustering revealed 81 differentially expressed genes. Of all the genes, 26 were downregulated in PDAC and 14 were upregulated in PDAC. In PDAC cell lines versus normal pancreatic duct cells, 21 genes were downregulated and 20 were upregulated. Of these 81 differentially expressed genes, 15 represented human genes previously implicated in the tumourigenesis of PDAC. From the genes that were so far not known to be associated with PDAC tumorigenesis, we selected ADAM9 for further validation because of its distinct overexpression in tumour tissue. Using immunohistochemistry, the over-expressed gene, ADAM9, was present in 70% of the PDACs analysed. In conclusion, using microarray technology we were able to identify a set of genes whose aberrant expression was associated with PDAC and may be used to target the disease.
AB - In a search for new molecular markers of pancreatic ductal adenocarcinoma (PDAC), we compared the gene expression profiles of seven pancreatic carcinomas and one carcinoma of the papilla Vateri with those of duct cells from three non-neoplastic pancreatic tissues. In addition, the human pancreatic duct cell line and five PDAC cell lines (AsPC-1, BxPC-3, Capan-1, Capan-2, HPAF) were examined. RNA was extracted from microdissected tissue or cultured cell lines and analysed using a custom-made Affymetrix Chip containing 3023 genes, of which 1000 were known to be tumour associated. Hierarchical clustering revealed 81 differentially expressed genes. Of all the genes, 26 were downregulated in PDAC and 14 were upregulated in PDAC. In PDAC cell lines versus normal pancreatic duct cells, 21 genes were downregulated and 20 were upregulated. Of these 81 differentially expressed genes, 15 represented human genes previously implicated in the tumourigenesis of PDAC. From the genes that were so far not known to be associated with PDAC tumorigenesis, we selected ADAM9 for further validation because of its distinct overexpression in tumour tissue. Using immunohistochemistry, the over-expressed gene, ADAM9, was present in 70% of the PDACs analysed. In conclusion, using microarray technology we were able to identify a set of genes whose aberrant expression was associated with PDAC and may be used to target the disease.
KW - ADAM9
KW - Expression profiling
KW - Immunohistochemistry
KW - Microarray hybridisation
KW - Microdissection
KW - Pancreatic cancer
UR - http://www.scopus.com/inward/record.url?scp=0242266512&partnerID=8YFLogxK
U2 - 10.1007/s00428-003-0884-1
DO - 10.1007/s00428-003-0884-1
M3 - Article
C2 - 12942322
AN - SCOPUS:0242266512
SN - 0945-6317
VL - 443
SP - 508
EP - 517
JO - Virchows Archiv
JF - Virchows Archiv
IS - 4
ER -