细胞变形性增强了ATRA分化的HL-60细胞对P-选择因素的粘附性
Xianwen Luo1, Quhuan Li2, Bishan Yang3
1School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, 510006, China.
European journal of medical research
|October 31, 2025
概括
在急性肌肉细胞白血病 (APL) 中,全转录氨基酸 (ATRA) 治疗会增加白细胞粘附. 这种增强的粘附主要是由于细胞可变性发生的变化,而不是PSGL-1表达,为分化综合征提供了洞察力.
科学领域:
- 生物医学工程 生物医学工程
- 血液学 血液学 血液学
- 细胞生物学 细胞生物学
背景情况:
- 急性前列细胞白血病 (APL) 涉及不成熟的骨髓状细胞,具有高增殖率.
- 全跨网红酸 (ATRA) 诱导分化,但可能导致危及生命的分化综合征 (DS).
- DS与异常的白细胞招募有关,但其机制尚不清楚.
研究的目的:
- 研究ATRA分化APL细胞中白细胞粘附增强背后的机制.
- 确定PSGL-1表达和细胞变形性在ATRA诱导的粘附中的作用.
主要方法:
- 使用流室来模拟生理条件和P-selectin用于白细胞招募.
- 量化PSGL-1-P-选择因结合寿命和ATRA治疗和未治疗HL-60细胞的粘附率.
- 用固定细胞进行实验,以评估细胞硬度对粘附的影响.
主要成果:
- 治疗ATRA增加了PSGL-1-P-选择因结合寿命和粘附率.
- 治疗和未治疗细胞之间的PSGL-1表达差异是最小的.
- 分化细胞的固定减少了结合寿命和粘附率,表明细胞变形性是关键.
结论:
- 改变细胞变形性,而不是PSGL-1表达,是增强ATRA分化的细胞粘附的主要驱动因素.
- 这些发现为APL分化综合征的机制提供了新的见解.
- 突出了改善DS预防和治疗策略的潜在目标.
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