聚纳米复合物调节乳酸代谢重编程并引起免疫反应,以增强癌症治疗效果
Zhan Zhang1, Xinnan Li1, Weiqiang Liu1
1Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China; Cancer Stem Cell and Translational Medicine Laboratory, Shengjing Hospital of China Medical University, Shenyang, China; Innovative Cancer Drug Research and Development Engineering Center of Liaoning Province, Shenyang, China.
概括
这项研究引入了一种新的纳米复合物,通过抑制乳酸生产和诱导癌细胞死亡来对抗酸性瘤微环境. 这种方法对提高耐药乳腺癌免疫疗法有希望.
科学领域:
- 生物医学工程 生物医学工程
- 癌症研究 癌症研究
- 免疫治疗是一种免疫疗法.
背景情况:
- 癌细胞重编程新陈代谢,增加细胞外乳酸,并创造一种酸性,免疫抑制性瘤微环境 (TME).
- 这种酸性TME阻碍了抗瘤免疫反应,导致治疗耐药性和患者的不良结果.
- 向瘤酸度和加强免疫监测对于有效的癌症治疗至关重要.
研究的目的:
- 为癌症治疗开发一种基于金属的协调纳米复合物.
- 为了研究纳米复合物的有效性,减少乳酸生产和缓解免疫抑制TME.
- 评估纳米复合物诱导免疫性癌细胞死亡和激活抗瘤免疫力的潜力.
主要方法:
- 制造一种以金属基协调为基础的纳米复合物,载有黄素,酸和PEG-Ce6.6.
- 黄素抑制乳酸脱酶 (LDH) 活性,以减少乳酸的产生.
- 通过激光照射PEG-Ce6诱导免疫性癌细胞死亡,作为光敏剂.
- 在小鼠乳腺癌模型中评估治疗效果.
主要成果:
- 该纳米复合物有效抑制LDH,降低乳酸水平并减轻TME酸度.
- 激光照射纳米复合物诱导免疫性癌细胞死亡.
- 组合疗法重塑了TME,并刺激了免疫细胞的招募和透.
- 在小鼠乳腺癌模型中观察到抗瘤免疫反应的显著增强.
结论:
- 开发的纳米复合体代表了克服TME中乳酸驱动免疫抑制的有希望的策略.
- 这种组合疗法有效地重塑瘤微环境,并引起强大的抗瘤免疫反应.
- 这种方法有可能提高耐药乳腺癌治疗疗效.
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