Abstract
Tissue factor pathway inhibitor-2 (TFPI-2) is a matrix-associated kunitz-type serine proteinase inhibitor that plays an important role in plasmin and trypsin-mediated activation of zymogen matrix metalloproteinases involved in tumor angiogenesis, invasion and metastasis. Earlier studies have shown that the production of TFPI-2 is downregulated during the progression of various tumors. To detect whether TFPI-2 can be expressed in human pancreatic carcinoma samples, to evaluate its prognostic significance on pancreatic carcinoma and to investigate its effect on tumor invasion and metastasis, we collected 9 normal pancreatic tissue samples and 41 pancreatic carcinoma samples and stably transfected the human pancreatic carcinoma cell line Panc-1 with a vector capable of expressing TFPI-2 gene. RT-PCR and Western blot analysis revealed that the expression of TFPI-2 in pancreatic carcinoma samples was markedly lower than that in normal pancreas samples, and there was no TFPI-2 expression in Panc-1 cell. Its expression was related with biological characters of pancreatic carcinoma. The results of Boyden chamber assay and orthotopic pancreatic carcinoma model showed that TFPI-2 could inhibit invasion and metastasis ability of pancreatic carcinoma in vitro and in vivo. Kaplan–Meier survival curve and Cox proportional hazards model assay identified TFPI-2 as an independent prognostic factor for pancreatic carcinoma. Our data suggest that TFPI-2 plays a significant role in the invasion and metastasis of pancreatic carcinoma cell in vitro and in vivo and is determined to be an important prognostic factor for pancreatic carcinoma patients.
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This study was supported by the Anhui Provincial Natural Science Foundation (No. 0504030702).
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Zhigang Tang and Guangyong Geng contributed equally to this work.
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Tang, Z., Geng, G., Huang, Q. et al. Prognostic significance of tissue factor pathway inhibitor-2 in pancreatic carcinoma and its effect on tumor invasion and metastasis. Med Oncol 27, 867–875 (2010). https://doi.org/10.1007/s12032-009-9298-5
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DOI: https://doi.org/10.1007/s12032-009-9298-5