抑制PTP可改善巨细胞抗瘤免疫反应以及化疗和放射治疗的有效性
Nestor Prieto-Dominguez1, Paran Goel2, Oluwagbemiga A Ojo3
1Department of Microbiology, University of Alabama at Birmingham, Birmingham, Alabama.
Cancer immunology research
|February 12, 2025
概括
矛盾的是,传统的癌症治疗方法可以促进瘤的生长. 抑制蛋白氨酸酸酶1B (PTP1b) 恢复免疫反应,增强抗癌疗法的疗效,并在临床前模型中减少瘤生长.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 抗癌疗法触发瘤细胞死亡和损伤相关分子模式 (DAMPs) 的释放,激活天生的免疫力.
- 矛盾的是,巨细胞在治疗后采用了亲瘤的,伤口愈合的表型,阻碍了免疫反应.
- 瘤细胞分泌Pros1,它与巨细胞的Mer受体结合,抑制托尔类受体 (TLR) 信号传递.
研究的目的:
- 研究瘤细胞和巨细胞如何相互作用,以影响癌症治疗后的先天免疫反应.
- 探索向Pros1-Mer受体信号传导以恢复抗瘤免疫力的潜力.
- 评估将蛋白质氨酸酸酶 (PTP) 抑制与常规抗癌治疗相结合的疗效.
主要方法:
- 对瘤细胞Pros1表达的分析及其与巨细胞Mer受体的相互作用.
- 在Mer受体下游的PTP1b信号的药理抑制.
- 在临床前癌症模型中,结合治疗研究涉及PTP抑制剂与化疗或放射治疗.
主要成果:
- 瘤分泌的Pros1抑制了巨细胞中的TLR信号转导,促进了支持瘤的环境.
- 抑制PTP1b信号传递,尽管存在Pros1,但仍能挽救巨细胞的前炎性反应.
- 组合疗法在各种耐火模型中显示,瘤生长减少了40%至90%.
- 在组合治疗瘤中观察到增强的免疫细胞透.
结论:
- 向PTP1b信号可以克服由Pros1-Mer途径介导的瘤诱导的免疫抑制.
- 将PTP1b抑制剂与传统的抗癌药物结合起来,代表了一种有希望的,潜在的无瘤策略,以提高治疗疗效.
- 这种方法可能会振兴对癌症的先天免疫反应,改善治疗不耐药环境中的结果.
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