基于GPA33表达的纯稳定人类Treg细胞的分离
Florencia Morgana1, Edith Slot1, Derk Amsen1,2
1Sanquin Research, Amsterdam and Landsteiner Laboratory, Department of Experimental Immunology, Amsterdam University Medical Center, Location AMC, University of Amsterdam, Amsterdam, The Netherlands.
European journal of immunology
|February 6, 2026
概括
调节性T (Treg) 细胞对免疫媒介疾病有希望. 像GPA33这样的新标记物通过识别稳定的细胞来提高Treg细胞疗法的纯度和安全性,从而提高治疗效率.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞疗法细胞疗法
背景情况:
- 使用调节性T (Treg) 细胞的采用细胞疗法 (ACT) 是免疫媒介疾病的有前途的治疗方法.
- 确保Treg细胞产品的纯度和稳定性对于治疗的安全性和有效性至关重要.
- 目前使用原始Treg (nTreg) 细胞 (CD4+CD25+CD127低/-CD45RA+) 的方法可以产生含有炎症细胞的不纯产品.
研究的目的:
- 开发强大的方法来识别和分离高纯度,稳定的FOXP3+Helios+Treg细胞,用于治疗应用.
- 提高Treg细胞产品的产量和纯度,同时保持其抑制功能和扩张能力.
主要方法:
- 使用GPA33作为表面标记物来识别稳定的人类Treg细胞.
- 将GPA33与CD226排除结合起来,以完善Treg细胞隔离,绕过CD127隔离的需要.
- 使用GPA33和TIGIT后扩张的共同表达来识别血统稳定的Treg细胞.
主要成果:
- 与标准的nTreg细胞相比,GPA33+ Treg细胞具有更高的FOXP3+Helios+纯度.
- 新的分离方法产生Treg细胞产物,其尺寸和扩张能力与nTreg细胞相似.
- 孤立的Treg细胞表现出缺乏效应细胞因子的产生,并保持完整的抑制功能.
- 将GPA33与CD226排除和扩张后GPA33/TIGIT共表达结合起来,可靠地识别出治疗上安全的Treg细胞.
结论:
- GPA33是隔离Treg细胞的可靠标记物,其纯度和稳定性得到了提高.
- 将GPA33与CD226或TIGIT结合,可以在采用细胞治疗中改善Treg细胞选择的策略.
- 这些进展有助于更安全,更有效的基于Treg细胞的疗法,用于免疫介导疾病.
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