交叉体细菌通过调节瘤微环境来控制癌症对治疗的反应
Noriho Iida1, Amiran Dzutsev, C Andrew Stewart
1Cancer and Inflammation Program, National Cancer Institute, Frederick, MD 21702, USA.
概括
完整的肠道微生物群对于有效的癌症免疫治疗和化疗至关重要. 破坏微生物群会通过影响瘤微环境中的髓状细胞来损害抗瘤反应.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 微生物组研究 微生物组研究
背景情况:
- 肠道微生物群在炎症中发挥作用,影响癌症的发展和治疗.
- 开始性细菌对无菌瘤微环境中的炎症的影响尚未完全理解.
研究的目的:
- 研究肠道微生物群在调节瘤微环境和对癌症治疗的反应中的作用.
- 为了确定共生细菌是否会影响瘤中的炎症和免疫细胞功能.
主要方法:
- 利用抗生素治疗和无细菌的小鼠模型来破坏肠道微生物群.
- 用CpG-oligonucleotide免疫疗法和化疗来评估治疗反应.
- 分析了瘤透的骨髓质衍生细胞,细胞因子生产,瘤缩,活性氧物种和细胞毒性.
主要成果:
- 微生物群的破坏显著损害了皮下瘤对CpG-oligonucleotide免疫疗法和化疗的反应.
- 接受抗生素治疗或没有细菌的小鼠在瘤透的髓质衍生细胞中表现不佳.
- 在受微生物群破坏的小鼠中,在CpG-oligonucleotide治疗后观察到细胞因子的减少和瘤缩.
- 在微生物群破坏的小鼠中,在化疗后观察到缺乏活性氧物种的产生和细胞毒性.
结论:
- 完整的开始性微生物群对于对癌症治疗,包括免疫疗法和化疗的最佳反应至关重要.
- 微生物群在瘤微环境中调节髓质衍生细胞功能,影响治疗结果.
- 这些发现凸显了肠道微生物群对癌症治疗疗效的重要性.
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