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对于BAFF引发慢性淋巴细胞白血病的未被认可的细胞存活独立作用
Md Ashik Ullah1, Beatriz Garcillán2, Eden Whitlock1
1Queensland Institute of Medical Research (QIMR) Berghofer Medical Research Institute, Cancer Program, Herston, QLD, Australia.
Frontiers in immunology
|March 12, 2024
概括
B细胞激活因子 (BAFF) 对于启动慢性淋巴细胞白血病 (CLL) 的关键是通过激活促进瘤基因,而不仅仅是细胞存活. 抑制BAFF可以通过减少瘤负担来增强CLL疗法.
科学领域:
- 血液学 血液学 血液学
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
背景情况:
- 慢性淋巴细胞白血病 (CLL) 涉及CD19+CD5+B细胞扩张,有争议的起源可能来自后生殖中心B细胞或CD5+成熟B细胞前体.
- 尽管BAFF和APRIL在CLL细胞存活和积累中的作用已知,但CLL的发起事件仍然未知.
研究的目的:
- 研究BAFF和APRIL在慢性淋巴细胞白血病 (CLL) 发病和进展中的作用.
- 阐明BAFF在CLL细胞中诱导的转录基因变化及其对促进瘤基因的直接影响.
主要方法:
- 生产新的CLL小鼠模型,缺乏BAFF或APRIL.
- 在体内研究以评估BAFF/APRIL损失对白血病发病,进展和传播的影响.
- 在CLL细胞上进行RNA测序和定量实时PCR,包括患者衍生细胞的ex vivo分析.
主要成果:
- BAFF,但不是APRIL,在CLL细胞的启动和传播中起着至关重要的作用.
- 失去BAFF或其受体 (BAFF-R) 将限制CLL细胞扩散到腹腔,防止外周扩散.
- BAFF信号传递是激活与CLL发起和进展相关的促进瘤基因程序所必需的,独立于细胞存活.
结论:
- BAFF可能通过与细胞存活不同的机制启动CLL,涉及到特定基因程序的激活.
- 结合目前的CLL治疗与BAFF抑制的联合治疗可以减少瘤负担并抑制转变的CLL细胞输出.
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