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B细胞前体急性淋巴细胞白血病引发干扰素α/β响应在骨髓衍生中干细胞瘤中
Mandy W E Smeets1, Elisabeth M P Steeghs2, Jan Orsel3
1Dept. of Pediatrics, Erasmus MC-Sophia, Rotterdam, The Netherlands; Princess Máxima Center for Pediatric Oncology, Utrecht.
Haematologica
|March 1, 2024
概括
介酶体 stromal 细胞 (MSC) 保护白血病细胞,诱导干扰素 (IFN) 基因在MSC中的签名. 在MSC中这种IFN签名不会提高B细胞前体急性淋巴细胞白血病 (BCP-ALL) 的白血病细胞存活率或耐药性.
科学领域:
- 血液学 血液学 血液学
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- B细胞前体急性淋巴细胞白血病 (BCP-ALL) 在骨髓中建立了一个保护性.
- 骨髓中介质层细胞 (MSC) 在与BCP-ALL细胞共同培养中模仿了这种保护.
研究的目的:
- 研究MSCs保护BCP-ALL细胞的机制.
- 为了识别与BCP-ALL细胞共同培养引起的MSCs中的分子变化.
主要方法:
- 在与BCP-ALL细胞共同培养后,流量排序的MSCs的RNA测序.
- 对干扰素 (IFN) 基因表达和信号通路的分析.
- 在IFN通路调节后评估BCP-ALL细胞活力和耐药性.
主要成果:
- 在MSC中,BCP-ALL细胞诱导了一种特定的IFN相关基因特征,部分取决于细胞与细胞的接触.
- 这种IFN特征是由BCP-ALL细胞,特别是ETV6-RUNX1-阳性ALL细胞选择性地触发的,而不是健康的免疫细胞.
- 白血病细胞和MSC分泌IFNα和IFNβ,但阻断IFNα/β信号不会影响白血病细胞活力或化疗耐药性.
结论:
- 在MSC中由白血病诱导的IFN特征并不促进BCP-ALL细胞生存或药物耐药性.
- 这种IFN签名在BCP-ALL病理生物学中的作用需要进一步研究.
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