Abstract
Background
Immunotherapy is an effective method for preventing metastasis and recurrence of carcinoma. Hepatocellular carcinoma (HCC) is a common malignancy with a high rate of recurrence, and has not successfully been introduced to immunotherapy.
Methods
Peripheral blood mononuclear cells were isolated from whole blood of HCC patients and stimulated to transform into dendritic cells (DCs). These DCs were then transfected with RNA extracted from HepG-2 hepatoma cells to induce expression of specific antigens.
Results
The transfected DCs stimulated T lymphocytes to produce cytotoxic T lymphocytes, which specifically attacked HepG-2 cells. Injection of T lymphocytes from HCC patients and transfected DCs into severe combined immunodeficiency mice limited the growth of HepG-2 tumors.
Conclusion
A specific immune response against hepatoma can be generated in vivo by administering DCs transfected with RNA from a specific tumor. This method may have therapeutic application in humans to reduce recurrence of HCC.
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Acknowledgments
The study was supported by grants from the National Natural Science Foundation of China (No. 30600156); the Science and Technology Projects Foundation of Guangdong Province (No. 2011B031800022); and the Youth Foundation of Jiangxi Province Education Department (No. Gjj10232).
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B. H. Xie and J. Y. Yang contributed equally to this study.
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Xie, B.H., Yang, J.Y., Li, H.P. et al. Dendritic cells transfected with hepatocellular carcinoma (HCC) total RNA induce specific immune responses against HCC in vitro and in vivo. Clin Transl Oncol 16, 753–760 (2014). https://doi.org/10.1007/s12094-013-1145-7
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DOI: https://doi.org/10.1007/s12094-013-1145-7