骨髓瘤患者的T细胞表型和克隆性变化,总体存活时间短
Alenka Djarmila Behsen1, Esten Nymoen Vandsemb1, Tobias Schmidt Slørdahl1
1Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway.
JCI insight
|April 29, 2025
概括
与长期幸存者相比,存活时间较短的多发性骨髓瘤患者显示出显著的免疫系统变化,包括较少的T细胞和更多的Tregs. 诊断时CD8+T细胞的PD-1较高预测总生存时间较短.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 血液学 血液学 血液学
背景情况:
- 多发性骨髓瘤 (MM) 的整体存活率高度可变.
- 影响生存的因素包括瘤生物学,瘤微环境 (TME) 和患者特征.
- 了解MM的免疫动态对于预测预后至关重要.
研究的目的:
- 研究多发性骨髓瘤患者之间免疫微环境的差异,这些患者的整体存活率较短而较长.
- 识别与MM的预后相关的免疫细胞特征.
主要方法:
- 来自45名MM患者的骨髓样本的分析.
- 使用质量细胞计和批量TCRβ测序.
- 对比的患者与OS<3年与OS>8年.
主要成果:
- 长期幸存者保持了稳定的TME和T细胞简介.
- 短期幸存者在复发时表现出显著的免疫变化,包括T细胞减少,调节性T细胞 (Tregs) 增加和更多激活/耗尽的CD8+T细胞.
- 诊断时CD8+ T细胞上更高的编程细胞死亡1 (PD-1) 表达与较短的OS相关.
- 短寿命患者在复发时表现出更单克隆的T细胞谱.
结论:
- 独特的免疫细胞简介区分了MM患者的短期和长期整体存活期.
- 免疫T细胞动态,特别是T细胞耗尽和谱系克隆性,是MM预后的关键决定因素.
- 这些发现突出了MM患者分层的潜在基于免疫的生物标志物.
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