单细胞转录组分析显示,APP-CD74轴促进免疫抑制和丸瘤的进展
Guo Chen1, Wei Wang2, Xin Wei2
1Department of Urology/Pelvic Floor and Andrology, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, PR China.
The Journal of pathology
|August 20, 2024
概括
这项研究揭示了丸瘤中显著的瘤内异质性,确定了与免疫抑制和较差的存活率相关的特定恶性亚群. 突出显示了像APP-CD74这样的关键细胞-细胞相互作用,提供了新的治疗点.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 丸瘤是年轻男性中最常见的恶性瘤,但它们的发病因子和分子机制尚不清楚.
- 理解瘤异质性和瘤微环境对于开发有效的向疗法至关重要.
研究的目的:
- 为了界定丸瘤中的瘤内异质性.
- 描述瘤微环境中的细胞间通信网络.
- 为了确定新的治疗策略的分子标.
主要方法:
- 单细胞RNA测序分析了40760个转录基因组,这些转录基因组来自细分瘤,混合生殖细胞瘤,莱迪格细胞瘤和健康的捐赠者.
- 恶性亚群和免疫细胞亚群的识别和表征.
- 对细胞通信通路和体细胞中的基因表达变化的分析.
主要成果:
- 确定了五个不同的恶性子集群,其中子集群1和3与免疫抑制状态和更差的无疾病生存率相关.
- 在恶性子集群和免疫细胞之间,APP-CD74相互作用显著增强.
- 异常的精子生成和体细胞,特别是塞尔托利细胞的全球基因变异在精子丸中被观察到,破坏了与精子干细胞的通信.
结论:
- 该研究提供了瘤内异质性和丸瘤中瘤免疫微环境的全面划分.
- 特定恶性子集群和细胞间通信通路的识别为有针对性的治疗干预提供了新的见解.
- 涉及塞尔托利细胞的受损细胞通信突出显示了它们在半瘤发病过程中的关键作用.
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Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
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