用抗CD38daratumumab针对B细胞:对差异化和记忆反应的影响
Dorit Verhoeven1,2, Lucas Grinwis2, Casper Marsman3
1Amsterdam UMC, University of Amsterdam, Department of Pediatric Immunology, Rheumatology and Infectious Diseases, Emma Children's Hospital, Amsterdam, The Netherlands d.verhoeven1@amsterdamumc.nl.
Life science alliance
|July 7, 2023
概括
在体外向CD38的达拉图穆马布可以减少B细胞的增殖,分化和抗体的产生,而不会影响T细胞. 这表明,通过向记忆B细胞,除了癌症之外,还有可能治疗B细胞介导的疾病.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 目前的B细胞疗法,如抗CD20mAbs,没有针对产生抗体的血细胞.
- 向CD38的疗法,如达拉图穆马布,对血细胞介导疾病具有前景.
- CD38向在癌症之外的人类B细胞分化的影响基本上是未知的.
研究的目的:
- 为了研究CD38向与达拉图穆马布对B细胞分化和功能在体外的影响.
- 分析对关键信号通路的影响,包括NF-κB.
- 为了确定哪些B细胞子集最容易受到达拉图巴的影响.
主要方法:
- 在体外B细胞分化试验.
- 信号通路分析,包括NF-κB激活.
- 用daratumumab进行分类的人类B细胞子集培养.
- 对T细胞激活和增殖的评估.
主要成果:
- 在T细胞依赖刺激过程中,达拉图巴显著降低了B细胞的增殖,分化和IgG的产生.
- 没有观察到对T细胞激活或增殖的显著影响.
- 达拉图巴减弱了NF-κB激活和B细胞中NF-κB向基因的转录.
- 切换记忆B细胞是主要受影响的B细胞子集.
结论:
- 用达拉图穆马布向CD38的药物通过非消耗性机制抑制了T细胞依赖B细胞的反应.
- 达拉图马布通过影响NF-κB信号传递,影响B细胞分化和抗体产生.
- 这些发现表明,daratumumab可以通过向记忆B细胞来治疗B细胞介导的疾病,而不仅仅是恶性瘤.
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