期刊
CHINESE JOURNAL OF CANCER RESEARCH
卷 26, 期 5, 页码 588-595出版社
CHINESE JOURNAL CANCER RESEARCH CO
DOI: 10.3978/j.issn.1000-9604.2014.10.07
关键词
Hepatocellular carcinoma (HCC); portal vein; portal vein tumor thrombus (PVTT); metastasis
类别
资金
- China National Funds for the Science Fund for Creative Research Groups [81221061]
- State Key Project on Infections Diseases of China [2012zx10002016016003]
- China National Funds for the Distinguished Young Scientists [81125018]
- National Natural Science Foundation [81071750, 81101831, 81101511]
- New Excellent Talents Program of Shanghai Municipal Health Bureau [XBR2011025]
- Shanghai Science and Technology Committee [134119a0200, 10JC1417600]
- Program for New Century Excellent Talents in University
- SMMU Innovation Alliance for Liver Cancer Diagnosis and Treatment
- Chang Jiang Scholars Program
Objective: Portal vein metastasis of hepatocellular carcinoma (HCC) results in a poor prognosis and seriously affects the survival rate of patients. The mechanism underlying the formation of portal vein tumor thrombus (PVTT) is complex and is not yet fully understood. This study was conducted to investigate the impact of portal vein blood on the proliferation, metastasis, invasion and apoptosis of PVTT cells and to explore its possible mechanisms, which was expected to lay a foundation for ascertaining the mechanism underlying the portal vein metastasis of HCC. Methods: Peripheral blood and portal vein blood were collected from patients with HCC, and the sera from these two sources were used to culture the PVTT-originated HCC cell line CSQT-2. The cells were collected after 24 h, and flow cytometry was performed to detect Fell proliferation, cell cycle stages and apoptosis. Transwell migration and invasion assays were applied to detect the metastasis and invasion of the cells in each group. The changes in the expression of MMP-2 and MMP-9 in cells were detected via Western blotting. The contents of IL-12, IFN-gamma, IL-1 beta, IL-2 and TNF-alpha in the two groups of sera were quantified using corresponding kits. Results: Compared with the group of cells cultured with peripheral serum, the cells cultured with portal vein serum showed significantly lower apoptosis (P<0.01), significantly enhanced cell metastasis and invasion (P<0.01), whereas cell proliferation and the stages of the cell cycle did not differ significantly (P>0.05). A significantly increased expression level of MMP-2 has been observed in tumor cells treated portal vein serum. In addition, compared with peripheral serum, the content of IL-12 was significantly decreased in portal vein serum (P<0.05), while the contents of IFN-gamma, IL-1 beta, IL-2, and TNF-alpha did not differ significantly (P>0.05). Conclusions: Portal vein serum from HCC patients could inhibit the apoptosis of PVTT-originated HCC cells and promote cell metastasis and invasion. This effect may be related to the lower level of IL-12 in portal vein serum.
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