Abstract
Purpose
To elucidate the effect of IFN-α treatment on tumor growth and metastasis of hepatocellular carcinoma (HCC).
Methods
IFN-α administration was conducted in nude mice using an orthotopic implantation model of human HCC, and the key molecular markers in the IFN-α treatment was detected by immunohistochemistry staining and PCR array.
Results
Up to 12 weeks of IFN-α treatment significantly suppressed tumor growth of HCC, but relatively increased the number of circulating tumor cells, which might be due to the enhanced tumor hypoxia as well as up-regulation of metastasis-related genes, such as HIF-1α, c-met, u-PA, PDGF-A, and IL-8. However, IFN-α had no direct effect on migration and invasion of HCC cells.
Conclusions
IFN-α has janus face of consistently suppressing HCC growth, however, promoting tumor metastasis capacity, which is of clinical indication for the scientific administration of IFN-α and the similar antiangiogenesis drugs for their dual effect on tumor growth and metastasis.
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Abbreviations
- CTCs:
-
Circulating tumor cells.
- ECGS:
-
Endothelial cell growth supplement
- ECM:
-
Endothelial cell medium
- FACS:
-
Fluorescence-activated cell sorting
- HCC:
-
Hepatocellular carcinoma
- IOD:
-
Integrated optical density
- NS:
-
Normal saline
- RFP:
-
Red-fluorescent protein
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Acknowledgments
This study was jointly supported by National Natural Science Foundation of China and the Research Grants Council (No. 30610301, 30872504), “211” Project for Higher Education (211xk24-1), and National key science & technology specific project (2008ZX10002-019, 021).
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Zhuang, PY., Zhang, JB., Zhang, W. et al. Long-term interferon-α treatment suppresses tumor growth but promotes metastasis capacity in hepatocellular carcinoma. J Cancer Res Clin Oncol 136, 1891–1900 (2010). https://doi.org/10.1007/s00432-010-0848-1
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DOI: https://doi.org/10.1007/s00432-010-0848-1