相关实验视频
Updated: Feb 6, 2026

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Generation of Human Chimeric Antigen Receptor Regulatory T Cells
Published on: January 3, 2025
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化学抗原受体T细胞对抗IGHV4-34 B细胞受体,专门消除瘤和自身免疫B细胞
Ivan J Cohen1,2,3, Audrey C Bochi-Layec1,2,3, Jean Lemoine1,2,3
1Center for Cellular Immunotherapies, University of Pennsylvania, Philadelphia, PA 19104, USA.
Science translational medicine
|February 4, 2026
概括
研究人员开发了针对B细胞受体 (BcR) IGHV4-34.4的新型仿真抗原受体 (CAR) T细胞. 这些CART4-34细胞在治疗B细胞恶性瘤和全身性红斑狼 (SLE) 方面表现有前途,通过专门向致病性B细胞.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 类风湿病学 类风湿病学
背景情况:
- 目前针对CD19的CAR T细胞疗法导致B细胞枯竭和抗原阴性逃逸.
- B细胞受体 (BcR) 信号传递对B细胞恶性瘤至关重要,而IGHV4-34在这些癌症中被丰富.
- IGHV4-34+自身抗体与系统性红斑狼 (SLE) 有关.
研究的目的:
- 开发和评估针对B细胞恶性瘤和SLE的IGHV4-34+ BcR的新型CAR T细胞.
- 评估CART4-34与CART19.2相比的疗效和安全性.
- 研究CART4-34在减少抗原负逃逸和向SLE病原性B细胞方面的潜力.
主要方法:
- 开发了针对IGHV4-34+ BcR.的CART4-34细胞.
- 在体外细胞毒性和细胞因子分泌测定对IGHV4-34+恶性B细胞.
- 在使用异种移植小鼠模型的体内研究.
- 对SLE B细胞和自身抗体的活体分析.
主要成果:
- CART4-34显示了针对IGHV4-34+恶性B细胞的特定细胞毒性和细胞因子分泌.
- 在CART4-34治疗后复发的瘤保留了IGHV4-34+ BcR,这表明抗原阴性逃逸减少.
- 在小鼠模型中,CART4-34与CART19具有可比的抗瘤活性,并有效向IGHV4-34+ SLE B细胞,减少自身抗体,而不影响健康的B细胞或总IgG.
- 优化的CAR:BcR结合改善了体内活性.
结论:
- CART4-34代表了一种新的CAR T细胞疗法,针对淋巴细胞恶性瘤和SLE中的致病性B细胞.
- 这种方法为精密细胞疗法提供了潜力,降低了抗原阴性逃逸的风险.
- CART4-34证明了治疗B细胞癌和SLE等自身免疫性疾病的双重潜力.
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