单细胞转录基因分析揭示了与Helicobacter pylori相关的胃瘤发生中的细胞复杂性和微环境
Nianshuang Li1, Sihai Chen2, Xinbo Xu1
1Department of Gastroenterology, Jiangxi Provincial Key Laboratory of Digestive Diseases, Jiangxi Clinical Research Center for Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China.
Journal of advanced research
|October 16, 2024
概括
这项研究绘制了胃癌发育过程中的细胞变化图,揭示了Helicobacter pylori感染如何改变细胞通信并促进瘤生长. 了解这些分子机制是对抗H. pylori驱动的胃癌的关键.
科学领域:
- 胃肠病学 胃肠病学
- 在瘤学瘤学.
- 基因组学就是基因组学.
背景情况:
- 杆菌 (H. pylori) 感染是胃癌 (GC) 的主要危险因素.
- 细胞异质性和H. pylori诱导的胃瘤发生的分子驱动因素仍然不完全理解.
研究的目的:
- 创建胃瘤发生的单细胞地图,跨越多个阶段,包括胃炎,肠道代谢 (IM) 和GC.
- 在胃癌发生过程中研究与H. pylori感染相关的细胞和分子变化.
主要方法:
- 在18个胃样本上进行单细胞RNA测序 (scRNA-seq).
- 使用免疫光学,免疫组织化学和qRT-PCR进行验证.
- 公共TCGA和GEO数据集的生物信息分析.
主要成果:
- 单细胞样本显示了显著的细胞异质性和胃癌进展过程中改变的组织生态.
- 确定了具有癌症相关表达特征的独特细胞系,包括瘤样上皮细胞 (EPC),炎症性癌症相关纤维细胞 (iCAF) 和瘤相关巨细胞 (TAM).
- 在特定的癌前表皮细胞子集 (肠细胞) 中发现高脂代谢基因表达,HNF4G作为关键的转录因子. 阳性H. pylori样本显示通过TNF,SPP1和THY1信号传递进行了丰富的细胞与细胞通信.
结论:
- 该研究提供了胃致癌生态系统的全面景观.
- 提供了对H. pylori诱导的GC不同细胞类型分子机制的新见解.
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