Affiliation:
1. Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province School of Public Health, Medical Science Center Xi'an Jiaotong University Xi'an Shaanxi 710061 P. R. China
2. Yuncheng Vocational and Technical University Yuncheng Shanxi 044000 P. R. China
3. School of Energy and Electrical Engineering Chang'an University Xi'an Shaanxi 710000 P. R. China
4. State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an Shaanxi 710049 P. R. China
Abstract
AbstractDendritic cell (DC) vaccines play an important role in anti‐tumor immunotherapy. Tumor‐associated cells or cytokines in the tumor microenvironment (TME) can inhibit the antigen‐presenting function of DC. Immunogenic cell death (ICD) can enhance the uptake and presentation of tumor antigens by DC. This study investigates the maturation mechanism of DC induced by low‐temperature plasma (LTP), as well as the therapeutic and protective effects of LTP‐induced DC vaccine in a tumor model. DC2.4 that is co‐cultured with LTP‐treated B16F10 (LTP‐B16) or with these supernatants exhibited decreased phagocytic activity, increased production of cytokines (IL‐12, IL‐6, TNF‐α, and IL‐1β), and increased expression of cell surface activation markers (CD80, CD86, and MHC II). The expression of CD80+/CD86+ is decreased after pre‐treatment with TLR4 and NF‐κB (p65) inhibitors, respectively. In vivo, trials indicated that the LTP‐induced DC vaccine‐induced anti‐tumor immunity and, when combined with cisplatin, synergistically reduced tumor growth.