Chrysin Enhances Anti‐tumor Immunity Response through <scp>IL‐12‐STAT4</scp> Signal Pathway in <scp>B16F10</scp> Melanoma Mouse Model

佐剂 细胞毒性T细胞 抗原 黑色素瘤 体内 免疫原性 CD8型 免疫学 癌症研究 肿瘤抗原 免疫系统 肿瘤微环境 化学 生物
作者
Ran Lu,Shuang Wang,Shasha Jiang,Chenglin Li,Yashuo Wang,Ling Li,Yunyang Wang,Guixin Ma,Hongye Qiao,Zhe Leng,Junyun Niu,Zibin Tian,Bin Wang
出处
期刊:Scandinavian Journal of Immunology [Wiley]
标识
DOI:10.1111/sji.13177
摘要

Chrysin (CHR) is a flavonoid with extensive pharmacological activity. The molecular formula of CHR is C15H10O4. CHR is reported to have antioxidative, anti-tumor and anti-viral functions. To evaluate its potential function as a vaccine adjuvant, we prepared a melanoma vaccine using a soluble protein extract of B16F10 melanoma cells as antigen and CHR as an adjuvant. The melanoma model was developed after two immunisations, and it was discovered that combining B16F10 soluble protein antigen-mixed CHR vaccine could inhibit tumor growth in the mouse model, and the overall survival rate was higher than that of the B16F10 antigen vaccine alone. In vivo and in vitro experiments were conducted to determine whether CHR functioned as an adjuvant by activating antigen-presenting cells (APCs). We discovered that CHR activated APCs both in vivo and in vitro and may enhance Th1 cell function by activating the IL12-STAT4 signal pathway, thereby enhancing the anti-tumor response of cytotoxic T lymphocytes (CTL) in vivo. Next, to verify the critical role of CD8+ T cells in suppressing melanoma development, we transplanted CD8+ T cells from immunised mice to B16F10 tumor-bearing mice and discovered that the survival rate of tumor-bearing mice was significantly prolonged. In summary, our experimental results indicate that CHR can be used as a potential adjuvant to enhance antigen immunogenicity, inhibit B16F10 tumor growth in mice and improve tumor immune response.
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