Growth Inhibitory Effect of the Ternary Complex Factor Net on Human Pancreatic Carcinoma Cell Lines

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Li, Baiwen, Ni, Peihua, Zhu, Qi, Cao, Haixia, Xu, Hong, Zhang, Su, Au, Chris and Zhang, Yongping (2008) Growth Inhibitory Effect of the Ternary Complex Factor Net on Human Pancreatic Carcinoma Cell Lines. Tohoku Journal of Experimental Medicine, 216 (2). pp. 139-147. ISSN 0040-8727


Pancreatic carcinoma is one of the most aggressive malignancies and carries the most dismal prognoses of all cancers. A better understanding of the genes involving in tumor development may allow us to tackle this rapidly progressive disease. The Net gene belongs to the ternary complex transcription factor (TCF) family and is regulated by the Ras/mitogen-activited protein kinase-signaling pathway. Under basal conditions, Net shows strong represssing function on transcription of proto-oncogene gene c-fos. Moreover, the lower expression of Net has been noted in some carcinoma cells, such as cervical cancer. To study the effect of Net on c-fos expression and its potential role in the growth of pancreatic carcinoma, we developed a recombinant plasmid, a pEGFP-N1-Net, which codes for Net-EGFP fusion proteins, and stably transfected it into BxPC-3 human pancreatic carcinoma cells. Using stable transformants, we were able to show that overexpression of Net decreased the expression of c-fos and inhibited pancreatic cancer cell proliferation. Cell cycle analysis demonstrated that Net overexpression inhibited cell cycle progression. These findings suggested that loss of Net repression could augment c-fos expression and further trigger neoplastic cell proliferation, which was involved in the pathogenesis of pancreatic cancer. Therefore, Net might be a potential target for the treatment of c-fos-positive pancreatic cancer.

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Item type Article
DOI 10.1620/tjem.216.139
Official URL
Subjects Historical > FOR Classification > 1112 Oncology and Carcinogenesis
Historical > FOR Classification > 1110 Nursing
Historical > Faculty/School/Research Centre/Department > School of Nursing and Midwifery
Historical > Faculty/School/Research Centre/Department > School of Biomedical and Health Sciences
Historical > SEO Classification > 970111 Expanding Knowledge in the Medical and Health Sciences
Keywords ResPubID16399, Net, c-fos, proliferation, pancreatic carcinoma, cell cycle
Citations in Scopus 6 - View on Scopus
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