Identification of genes related to invasion and metastasis in pancreatic cancer by cDNA representational difference analysis

被引:0
|
作者
Ishikawa, S [1 ]
Egami, H [1 ]
Kurizaki, T [1 ]
Akagi, J [1 ]
Tamori, Y [1 ]
Yoshida, N [1 ]
Tan, X [1 ]
Hayashi, N [1 ]
Ogawa, M [1 ]
机构
[1] Kumamoto Univ, Sch Med, Dept Surg 2, Kumamoto 8608556, Japan
关键词
MKK2; PI4K230; invasion and metastasis; pancreatic cancer;
D O I
暂无
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
The difference in gene expression between the highly invasive and metastatic cell line PC-1.0 and the weakly invasive and metastatic cell line PC-1 both derived from a pancreatic ductal carcinoma induced by N-nitrosobis (2-oxopropyl) amine (BOP) in Syrian golden hamster was examined using the Representational Difference Analysis (RDA) method. Within 8 clones (cDNA fragments) successfully isolated after subtraction hybridization of PC-1 cDNA from PC-1.0, 5 clones were shown to be specific or highly expressed in PC-1.0 as confirmed by RT-PCR. Among these 5 clones, two known genes, MAP kinase kinase 2 (MKK2) and phosphatidylinositol 4-kinase (PI4K230) were detected by gene sequencing. The specific expressions of MKK2 and PI4K230 in the highly invasive and metastatic cell line PC-1.0 were confirmed by RT-PCR and Northern blotting. By adding the CM of PC1.0 which included the cancer cell dissociation factor (DF), PC-1 cells began to dissociate and migrate from the colonies, and in addition the expression of MKK2 was found to be induced. On the other hand, the expression of PI4K230 was not induced in PC-I cells by adding the CM of PC-1.0. Interestingly, in PC-1.0 the expression of PI4K230 was completely abolished and apoptosis induced by the PI3K inhibitor wortmannin. These results suggest that both MKK2 and PI4K230 are factors of a signal transduction pathway that might play an important role related to invasion and metastasis through the induction of cell motility and/or the inhibition of apoptosis.
引用
收藏
页码:299 / 306
页数:8
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