益生菌和DNA损伤触发了抗乳腺癌细胞免疫反应
Ödül Karayazi Atici1, Nayantara Govindrajan1, Isbel Lopetegui-González1
1Department of Biological Sciences, University of Calgary, Calgary, AB, Canada.
Frontiers in endocrinology
|October 9, 2025
概括
乳腺癌细胞中的DNA损伤和益生菌素 (PRL) 增强了特定免疫细胞的抗瘤活性. 这种涉及亚西-GM1阳性细胞的相互作用为乳腺癌治疗策略提供了新的见解.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 乳腺癌和瘤微环境中益生菌素 (PRL) 的作用尚未完全理解.
- 之前的研究表明,DNA损伤反应 (ATM通路) 和PRL信号通路 (JAK2-STAT5-HSP90) 之间存在交叉声.
研究的目的:
- 为了研究乳腺癌瘤在DNA损伤后的启动中蛋白质前素 (PRL) 的作用.
- 探索DNA损伤和PRL对瘤微环境和免疫细胞相互作用的影响.
主要方法:
- 使用免疫缺陷SCID小鼠进行的体内正位异种移植模型.
- 经过工程设计以分泌PRL的乳腺癌细胞被用多克索鲁比 (DNA破坏剂) 治疗.
- 对亚西-GM1阳性免疫细胞进行了消耗,以评估它们的作用.
主要成果:
- 与对照组相比,多克索鲁比辛和PRL的联合治疗增加了瘤潜伏时间.
- 亚西-GM1阳性免疫细胞的消耗加速了多克索鲁比预处理的PRL分泌细胞中的瘤形成.
- 多克索鲁比加PRL治疗在体外吸引了细胞毒性NK细胞,依赖于PRL受体 (PRLR).
结论:
- 乳腺癌细胞中DNA损伤和PRL暴露的组合激活了由亚西-GM1阳性免疫细胞介导的抗瘤免疫反应.
- 这些发现突出了一个新的机制,即乳腺癌细胞在DNA损伤和PRL暴露后与免疫系统相互作用.
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