用临床批准的溶液延长中性粒细胞的室温储存时间:对颗粒细胞输血的影响
Marie-Michèle Labrecque1,2,3, Marie-Ève Allard3, Andréa Murru1,2,3
1Infectious and Immune Diseases Division, CHU de Québec Research Center, 2705 Blvd. Laurier, Québec, QC, G1V 4G2, Canada.
Journal of leukocyte biology
|December 24, 2024
概括
在颗粒细胞缩剂 (GCs) 中延长中性粒细胞活力对于治疗感染至关重要. 一种新型的添加剂组合在室温下保持中性粒细胞功能长达72小时,增强细胞治疗潜力.
科学领域:
- 血液学和输血医学 血液学和输血医学
- 细胞疗法 细胞疗法
- 免疫学 免疫学 免疫学
背景情况:
- 颗粒细胞缩物 (GCs) 对感染中性衰竭患者至关重要.
- 目前的局限性包括中性粒细胞短寿命 (24小时),影响物流和可用性.
- 延长活体中性粒细胞生存能力对于有效的细胞疗法至关重要.
研究的目的:
- 探索将GC中性粒细胞的ex vivo活力和抗菌活性延长至72小时.
- 评估用于中性粒细胞保存的临床批准添加剂的独特组合.
- 评估储存溶液对中性粒细胞功能和抗菌特性的影响.
主要方法:
- 隔离的中性粒细胞在室温下存储 (长达72小时) 在各种Plasma-Lyte (PL),SAGM,AS-3和Alburex与缓冲器的组合中.
- 测量了中性细胞活力,细胞化,细胞内和细胞外反应性氧物种 (ROS) 生产以及化学反应.
- 此外,还对用最佳添加剂组合储存的聚合,残留白细胞单元进行了测试.
主要成果:
- 最佳的添加剂组合 (PL,缓冲器,AS-3) 保持了中性粒细胞的活力长达48小时,细胞化/ROS生成长达72小时.
- 在24小时后,化学反应减少了20%,而细胞外ROS产量在同一时期内显著增加.
- 用开发的溶液补充聚合白细胞单位并没有显著改善中性粒细胞的保存.
结论:
- 经过临床批准的添加剂可以量身定制,以延长中性粒细胞的生命力和在室温下活体功能.
- 开发的添加剂溶液在延长颗粒细胞度的保质期方面表现有前途.
- 对于聚合白细胞单位和添加剂溶液应用的时间,需要进一步优化.
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