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Published in: Digestive Diseases and Sciences 9/2008

01-09-2008 | Original Paper

The PMAIP1 Gene on Chromosome 18 is a Candidate Tumor Suppressor Gene in Human Pancreatic Cancer

Authors: Masaharu Ishida, Makoto Sunamura, Toru Furukawa, Liviu P. Lefter, Rina Morita, Masanori Akada, Shinichi Egawa, Michiaki Unno, Akira Horii

Published in: Digestive Diseases and Sciences | Issue 9/2008

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Abstract

Frequent loss of heterozygosity on the long arm of chromosome 18 is observed in pancreatic cancer. Previous studies suggested the existence of one or more tumor-suppressor genes other than SMAD4 on chromosome 18. To identify the candidate tumor-suppressor gene(s), we compared gene expression by cDNA microarray analyses using a pancreatic cancer cell line Panc-1 and its hybrid cell lines showing suppressed cell growth after introduction of one normal copy of chromosome 18. The microarray analyses identified 38 genes on chromosome 18 that showed differential expressional levels. Among these genes, phorbol-12-myristate-13-acetate-induced protein 1 (PMAIP1/APR/NOXA) was identified as one of the candidates for tumor suppressor. Expression vector-mediated introduction of PMAIP1 suppressed cell proliferation, and RNAi-mediated knockdown of PMAIP1 induced recovery of cell growth. These results suggest that PMAIP1 may play an important role in the progression of pancreatic cancer.
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Metadata
Title
The PMAIP1 Gene on Chromosome 18 is a Candidate Tumor Suppressor Gene in Human Pancreatic Cancer
Authors
Masaharu Ishida
Makoto Sunamura
Toru Furukawa
Liviu P. Lefter
Rina Morita
Masanori Akada
Shinichi Egawa
Michiaki Unno
Akira Horii
Publication date
01-09-2008
Publisher
Springer US
Published in
Digestive Diseases and Sciences / Issue 9/2008
Print ISSN: 0163-2116
Electronic ISSN: 1573-2568
DOI
https://doi.org/10.1007/s10620-007-0154-1

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