在自然杀手细胞和它们的细胞之间进行流细胞计结合形成测定
Gilles Iserentant1, Carole Seguin-Devaux1, Jacques Zimmer1
1Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg.
Methods in cell biology
|February 7, 2025
概括
自然杀手 (NK) 细胞必须与细胞结合,然后才能杀死它们. 这项研究详细介绍了一种流细胞计法,以量化NK细胞与标的结合,发现合形成并不总是与细胞毒性相关.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 自然杀手 (NK) 细胞对于天生的免疫力至关重要,通过细胞与细胞的接触消除目标细胞.
- 通过NK细胞介导的细胞毒性是由目标细胞的激活和抑制信号的平衡所启动的.
- 量化NK细胞和细胞之间的结合 (结合形成) 可以提供关于细胞毒性潜力的见解.
研究的目的:
- 描述一种简单的双色流细胞测量方法,用于评估效应细胞-细胞结合体.
- 评估NK细胞结合形成和细胞毒性之间的关系.
- 为染色,细胞培养和分析提供详细的协议.
主要方法:
- NK 细胞和细胞被不同的光染料染色.
- 细胞在37°C的温度下以特定的效应者:目标比率 (例如1: 1) 进行共同化,持续时间不同.
- 流细胞计用于区分和量化未结合的效应细胞,未结合的细胞和双阳性结合体.
主要成果:
- 流细胞测量方法成功地区分了三个细胞群:单阳性效应体,单阳性标体和双阳性结合体.
- NK白血病细胞系KHYG-1与K562和Raji细胞形成了大量的结合体.
- 净化,非激活的外周血液NK细胞与K562和Raji细胞呈现较低的合形成,与它们的细胞毒性活性降低相关.
结论:
- 双色流细胞计是量化NK细胞-细胞结合形成的可行方法.
- 虽然结合物形成是细胞毒性的先决条件,但它并不总是与杀死水平直接相关,正如不同细胞的不同结合物百分比所证明的那样.
- 描述的协议有助于研究NK细胞结合动态及其与细胞毒性功能的关系.
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