高剂量的维生素C通过ROS-pSTAT3信号通路抑制PD-L1并增强TNBC中的T细胞功能
Xixi Zhao1, Mengjie Liu2, Chaofan Li2
1Department of Radiation Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 West Fifth Street, Xi'an 710004, Shaanxi, PR China.
International immunopharmacology
|December 2, 2023
概括
高剂量维生素C (VitC) 通过减少三阴性乳腺癌中PD-L1表达来增强癌症免疫疗法. 这种维生素C的作用促进T细胞活动,抑制瘤生长并改善免疫反应.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 营养生物化学 营养生物化学
背景情况:
- 高剂量维生素C (VitC) 在癌症治疗中表现有前途,特别是静脉注射.
- 它在调节癌症免疫力的特定机制,特别是三阴性乳腺癌 (TNBC),需要进一步阐明.
研究的目的:
- 调查高剂量VitC对TNBC中PD-L1表达的影响.
- 探索VitC在癌症中的免疫调节作用的潜在分子机制.
主要方法:
- 使用乳腺癌细胞系进行体外研究,以评估PD-L1表达和T细胞活性.
- 对ROS-pSTAT3信号通路的研究.
- 在具有瘤的免疫能力的小鼠体内实验.
主要成果:
- VitC显著抑制了乳腺癌细胞中的PD-L1表达.
- 维生素C增强了T细胞的抗瘤功效.
- 该研究确定了ROS-pSTAT3信号作为VitC介导PD-L1抑制的机制.
- 在体内,VitC抑制了瘤生长,并增加了CD8+ T细胞的透和功能.
结论:
- 高剂量的维生素C有效地降低了TNBC中的PD-L1表达.
- VitC通过ROS-pSTAT3通路抑制PD-L1,起到免疫调节剂的作用.
- 这些发现支持高剂量VitC作为增强癌症免疫治疗的辅助疗法的潜力.
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