在患有JAK2V617F-阳性基本血栓细胞血症的患者中,明显的肠道微生物群特征
Christina Schjellerup Eickhardt-Dalbøge1,2,3, Anna Cäcilia Ingham3, Henrik V Nielsen3
1Regional Department of Clinical Microbiology, Zealand University Hospital , Koege, Denmark.
Microbiology spectrum
|September 11, 2023
概括
与健康个体相比,实质性血栓塞瘤 (ET) 患者表现出明显的肠道微生物群概况,细菌组成发生变化,免疫调节性细菌减少. 这些变化在JAK2V617F阳性ET病例中更为明显.
科学领域:
- 血液学 血液学 血液学
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
背景情况:
- 基本血小板血 (ET) 是费城染色体阴性骨髓增殖性瘤,与血栓栓事件和炎症相关.
- 肠道微生物群在血液形成和免疫调节中的作用已经确立,但其在ET患者中的地位仍然基本上未被探索.
- 炎症是骨髓增殖性新生瘤的关键特征,突出显示了研究微生物贡献的需要.
研究的目的:
- 为了比较患有基本血小板血 (ET) 患者的肠道微生物组合与健康对照组 (HCs).
- 根据ET患者的Janus-kinase 2 (JAK2V617F) 突变状态来调查肠道微生物群的差异.
- 探索肠道微生物群,炎症和ET中的免疫调节之间的关系.
主要方法:
- 用V3-V4区域的16SrRNA基因测序分析了54名ET患者和42名HC患者的肠道微生物群.
- 在ET患者和HC患者之间对微生物群丰富度和细菌组成 (β多样性) 的比较分析.
- 评估特定细菌种群的相对丰度,包括Faecalibacterium属,以及与JAK2V617F突变状态的相关性.
主要成果:
- 与HC相比,ET患者的肠道微生物丰富度显著增加 (P < 0.001).
- 在ET患者和HC患者之间观察到不同的总体细菌组成 (β多样性) (P = 0.004).
- 与HC相比,ET患者的Firmicutes (P = 0.03) 和Faecalibacterium (P < 0.001) 的相对丰度较低.
- 阳性JAK2V617F的ET患者表现出更明显的微生物群特征,类似于真多细胞血症.
结论:
- 与健康个体相比,肠道微生物群的组成在患有基本血栓塞瘤的患者中发生了显著的变化.
- ET患者的关键免疫调节细菌数量减少,这表明免疫反应的潜在调节失调.
- JAK2V617F突变影响肠道微生物群的特征,强调了ET的遗传因素,微生物群落和疾病特征之间的相互作用.
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