产生大酶B的B细胞:与乳腺癌细胞的双向关系以及对免疫治疗的含义
Hosein Hakimi1, Fereshteh Mehdipour2, Morteza Samadi3
1Department of Immunology, School of Medicine, Shahid Sadoughi University of Medical Sciences Yazd, Iran.
American journal of clinical and experimental immunology
|November 24, 2025
概括
乳腺癌细胞通过直接接触来抑制产生Granzyme B (GrB) 的B细胞. 然而,用IL-21和抗BCR激活B细胞可以逆转这种抑制,并恢复对瘤细胞的细胞毒性潜力.
科学领域:
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
- 细胞免疫学 细胞免疫学
背景情况:
- 产生大酶B (GrB) 的B细胞在瘤免疫中表现出双重作用,可能会杀死瘤细胞或抑制抗瘤反应.
- 了解乳腺癌细胞与产生GrB的B细胞之间的相互作用,对于开发有效的免疫疗法至关重要.
研究的目的:
- 为了研究乳腺癌细胞如何影响从瘤排水淋巴结中产生Granzyme B (GrB) 的B细胞.
- 确定B细胞激活是否可以增强它们对乳腺癌细胞的细胞毒性潜力.
主要方法:
- 从淋巴结中分离出单核细胞,并与乳腺癌细胞系 (MCF-7,MDA-231) 共同培养.
- 通过流细胞计量测量了B细胞的Granzyme B产量.
- 在用IL-21和抗BCR激活B细胞后,使用素AM释放试验评估瘤细胞亡.
主要成果:
- 与乳腺癌细胞直接共同培养显著降低了产生GrB的B细胞的频率.
- 用IL-21和抗BCR预刺激B细胞维持了GrB表达,并在MCF-7细胞中诱导了显著的亡.
- 单独的瘤细胞超位剂并没有影响产生GrB的B细胞的频率.
结论:
- 乳腺癌细胞通过直接的细胞与细胞接触来抑制GrB+B细胞的反应.
- 乙细胞激活能够逆转这种抑制并恢复细胞毒性活性.
- 激活的GrB+B细胞对乳腺癌细胞具有直接的细胞毒性潜力,这表明它们在免疫治疗中的有用性.
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