Abstract
Advances in oncoimmunology related to the definition of the basic mechanisms of the formation of antitumor immune response, as well as the opening of tumor-associated antigens recognized by immune cells, allowed to start developing ways to influence the effector cells of the immune system to generate effective antitumor cytotoxic response. We investigated the possibility to stimulate an antitumor response in a culture of mononuclear cells of breast cancer patients by dendritic cells transfected with HLA-A*02:01-restricted DNA constructs. We isolated dendritic cells from peripheral blood monocytes and delivered our constructs to these cells by magnetic transfection. Additionally, a series of experiments with loading of dendritic cells with autologous tumor cell lysate antigens was conducted. We have shown that dendritic cells transfected with the HLA-A*02:01-restricted DNA constructs are effective in inducing an antitumor response in a culture of mononuclear cells of breast cancer patients. Dendritic cells transfected with DNA constructor dendritic cells loaded with lysate antigens revealed a comparable stimulated cytotoxic response of mononuclear cells to these two ways of antigen delivery. We conclude that using DNA constructs in conjunction with patient stratification by HLA type allows the application of transfected DCs as an effective method to stimulate antitumor immunity in vitro.
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Abbreviations
- DC:
-
Dendritic cells
- MNC:
-
Mononuclear cells
- TC:
-
Tumor cells
- LDH:
-
Lactate dehydrogenase
- TAAs:
-
Tumor-associated antigens
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Acknowledgments
This work was supported by the Federal target program “Research and development in priority areas of scientific and technological complex development of Russia for 2014-2020” (Agreement No 14.607.21.0043. The unique identifier for Applied Scientific Research RFMEFI60714X0043). The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed. No writing assistance was utilized in the production of this manuscript.
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Sennikov, S.V., Shevchenko, J.A., Kurilin, V.V. et al. Induction of an antitumor response using dendritic cells transfected with DNA constructs encoding the HLA-A*02:01-restricted epitopes of tumor-associated antigens in culture of mononuclear cells of breast cancer patients. Immunol Res 64, 171–180 (2016). https://doi.org/10.1007/s12026-015-8735-0
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DOI: https://doi.org/10.1007/s12026-015-8735-0