多omics分析阐明了乳腺癌中瘤内微生物组和宿主免疫异质性之间的关系
Jia Li1, Yu Zhang1, Yifan Cai1
1Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
Microbiology spectrum
|March 5, 2024
概括
内微生物群影响乳腺癌 (BC) 的进展和治疗. 这项研究确定了四种关键细菌 (Acidibacillus, Succinimonas, Lachnoclostridium, Pseudogulbenkiania) 作为预后生物标志物,为BC免疫疗法提供了新的治疗点.
科学领域:
- 微生物学 微生物学
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
背景情况:
- 内微生物组通过调节免疫系统,显著影响癌症的发展,进展和治疗反应.
- 了解乳腺癌 (BC) 中的免疫相关的瘤内微生物组 (IRIM) 对于确定预后因素和治疗点至关重要.
研究的目的:
- 在乳腺癌 (BC) 中描述IRIM.
- 为了确定BC瘤内微生物群内的潜在的预后预测因素和治疗点.
- 根据微生物组和免疫细胞透,将BC患者分为不同的免疫亚型.
主要方法:
- 利用了癌症基因组图谱乳腺侵入性癌症 (TCGA-BRCA) 数据,包括临床,微生物组和转录组学信息.
- 采用单变Cox回归来识别瘤透核心免疫细胞.
- 应用共识聚类来将患者分为免疫丰富和免疫缺陷亚型.
- 使用最不歧视性分析效果大小方法来识别显著的IRIM.
- 使用考克斯的比例危险模型构建了一个预后签名.
主要成果:
- 在BC中确定了两种不同的免疫亚型:免疫丰富 (预后良好,高CD8 + T和巨细胞M1透) 和免疫缺陷.
- 发现了亚型之间的α-多样性和β-多样性的显著差异.
- 确定了33种IRIM,其中四种关键细菌 (Acidibacillus,Succinimonas,Lachnoclostridium,Pseudogulbenkiania) 形成了一个强大的预后特征.
- 发现了预后IRIMs,免疫基因表达和对他莫西芬和多塞的敏感性之间的相关性.
结论:
- 成功将BC患者分为两种不同的免疫亚型,具有不同的预后和微生物组形状.
- 为BC建立了一个新的四种细菌预后签名,具有显著的预测价值.
- 证明关键的IRIM与预后,免疫细胞透和BC免疫疗法的疗效有关.
- 拟议的IRIM作为潜在的生物标志物和新型治疗点,用于BC治疗和免疫疗法监管.
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