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单细胞转录组分析揭示了带有转移的乳头甲状腺癌与瘤相关的微环境
Ni Zhang1, Qingbin Liu2, Qian Wang3
1Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250000, P.R. China.
Oncology letters
|June 11, 2025
概括
单细胞RNA测序揭示了转移性乳头甲状腺癌 (PTC) 的免疫细胞差异. 像M2巨细胞,DC2s和Tregs这样的免疫抑制细胞与转移相关,这表明了新的治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 基因组学就是基因组学.
背景情况:
- 乳头甲状腺癌 (PTC) 通常涉及炎症和淋巴结转移.
- 单细胞RNA测序 (scRNA-seq) 提供了瘤微环境中细胞异质性的高分辨率分析.
研究的目的:
- 使用scRNA-seq. 调查免疫细胞群体中转移性PTC (PTC-M) 与正常组织和非转移性PTC之间的差异.
- 确定与PTC转移和瘤进展相关的特定免疫细胞子集.
主要方法:
- 利用scRNA-seq分析转移性PTC,非转移性PTC和相邻的正常组织中的免疫细胞 (巨细胞,树突细胞,T细胞).
- 在不同的组织类型之间比较免疫细胞组成,以确定显著的差异.
主要成果:
- 在PTC-M中确定了显著的免疫细胞异质性,表明免疫抑制瘤微环境.
- 发现替代激活的M2巨细胞,常规的2型树突细胞 (DC2s) 和调节性T细胞 (Tregs) 与增加淋巴结转移和晚期癌症阶段有关.
- 观察到单细胞和B细胞可能起到对瘤的保护作用.
- 描述了表达LAMP3和CCL22的瘤相关DC2s的一个子集,能够吸引CD4+T细胞.
结论:
- 这项研究支持了骨髓细胞和Tregs通过调节瘤微环境显著促进PTC进展和转移的假设.
- 这些发现突出了针对这些免疫细胞进行PTC治疗的潜在治疗策略.
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