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沃尔登斯特罗姆巨型球蛋白血症中与瘤相关的扩大多态核细胞髓质衍生抑制细胞显示免疫抑制活性

Vaishali Bhardwaj1, Zhi-Zhang Yang1, Shahrzad Jalali1

  • 1Division of Hematology and Internal Medicine Mayo Clinic, Rochester, MN, USA.

Blood cancer journal
|December 18, 2024
PubMed

Insights

骨髓衍生抑制细胞 (MDSCs) 在沃尔登斯特罗姆巨型球蛋白血症 (WM) 骨髓中增加. 这些细胞抑制抗瘤免疫力,这表明MDSCs是WM的潜在治疗标.

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:

  • 骨髓微环境在沃尔登斯特罗姆巨型球蛋白血症 (WM) 抗瘤免疫力中的作用尚不清楚.
  • 骨髓衍生抑制细胞 (MDSCs) 是癌症免疫抑制的关键调节者.

研究的目的:

  • 研究MDSCs在WM骨髓微环境中的作用.
  • 在WM患者中描述MDSCs的表型和功能.

主要方法:

  • 来自WM患者的非恶性骨髓细胞的转录和表型分析.
  • 对WM MDSCs的单细胞免疫基因组分析.
  • 在体外功能测定评估T细胞抑制和MDSC扩张.

主要成果:

  • 在WM患者中,HLA-DRlowCD11b+CD33+MDSCs增加,主要是多态核核 (PMN) -MDSCs.
  • 在WM MDSC中,表现出一种免疫抑制基因特征,具有上调的干扰素和TNF信号通路.
  • WM PMN-MDSCs强烈抑制T细胞,并被G-CSF和TNFα扩展;恶性B细胞招募PMN-MDSCs.

结论:

  • 恶性WM B细胞招募PMN-MDSCs,创造一个免疫抑制的骨髓微环境.
  • PMN-MDSCs直接抑制T细胞,并通过微环境因素进一步扩大.
  • 针对PMN-MDSCs代表了WM的潜在治疗策略.
抽象的

No abstract available in PubMed .

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