通过单细胞和空间转录学来解决心肌瘤中的异质瘤微环境
Xuanyu Liu1,2, Huayan Shen1,2, Jinxing Yu1,2
1State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
Clinical and translational medicine
|February 6, 2024
概括
这项研究揭示了心肌瘤 (CM) 瘤细胞有两个状态,并确定了瘤微环境 (TME) 中的免疫抑制. 这些发现有助于进一步了解并支持CM的新医学疗法.
科学领域:
- 心脏病学 心脏病学
- 在瘤学瘤学.
- 基因组学就是基因组学.
- 免疫学 免疫学 免疫学
背景情况:
- 心脏肌瘤 (CM) 是最常见的初级心脏瘤,通常需要手术干预.
- 医疗疗非常需要,特别是那些不适合进行手术的患者.
- 了解CM中的瘤微环境 (TME) 机制对于开发向治疗至关重要.
研究的目的:
- 在单细胞和空间分辨率下全面描述心肌瘤 (CM) 中的TME.
- 阐明CM内的细胞组成,分化途径和细胞间通信.
- 为了确定CM治疗的潜在治疗点.
主要方法:
- 从CM瘤样本中对34,759个细胞进行单细胞RNA测序.
- Visium CytAssist用于空间分析的空间转录基因 (ST) 测试.
- 无监督聚类,RNA速度分析和细胞间通信分析.
主要成果:
- 确定了12个细胞群,包括内皮细胞 (ECs),介质细胞 (MSCs) 和免疫细胞.
- 发现了myxoma瘤细胞的两个表型状态:EC类瘤细胞 (ETC) 和MSC类瘤细胞 (MTC),有证据表明MTC分化为ETC.
- 揭示了CM中的免疫抑制性TME,并确定了参与瘤进展的关键信号通路 (MDK,HGF,化学素,GDF15).
- 空间转录学揭示了局部化的细胞相互作用和克隆进化模式.
结论:
- 这项研究为CM TME提供了第一个单细胞和空间分辨率的表征.
- 获得了关于myxoma瘤细胞分化和TME复杂性的新见解.
- 生成的数据集为推进CM等罕见心脏瘤的医学治疗提供了有价值的资源.
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