当前位置:首页>徐州>徐州医科大学附属医院CAR-T治疗难治性重症肌无力机制研究在《Science》子刊发布

徐州医科大学附属医院CAR-T治疗难治性重症肌无力机制研究在《Science》子刊发布

  • 2026-02-17 11:24:41
徐州医科大学附属医院CAR-T治疗难治性重症肌无力机制研究在《Science》子刊发布
近日,徐州医科大学附属医院神经内科崔桂云教授、张勇教授团队联合徐州医科大学肿瘤研究所施明教授团队,在国际顶级期刊《Science Advances》在线发表了题为“BCMA/CD19 CAR T cell therapy for refractory myasthenia gravis: proteomic signatures and single-cell transcriptomics of disease flares”的研究论文。

一、研究背景

重症肌无力(MG)是一种由B细胞功能异常导致的自身免疫性疾病,其中10%-20%的患者对传统治疗无效,发展为难治性病例,长期面临治疗困境。为了攻克这一临床壁垒,研究团队创新性地设计了靶向BCMA/CD19的双靶点CAR-T细胞,并在多种免疫抑制剂或生物制剂无效的“超难治性”重症肌无力患者中进行了临床治疗评估。

二、研究结果

该研究首次系统报道了BCMA/CD19双靶点CAR-T细胞疗法在6例难治性重症肌无力患者中长达一年的安全性与疗效数据,并深入揭示了治疗后的免疫重塑机制。研究结果显示,所有入组患者仅出现1级细胞因子释放综合征,治疗安全性良好。治疗后观察到深度B细胞清除、致病性乙酰胆碱受体抗体持续下降及临床症状显著改善。至6个月时,5例患者实现无药缓解 (Drug-free remission),且疗效持续至12个月随访结束。

研究进一步通过Olink蛋白质组学分析显示, CAR-T细胞输注后多种细胞因子包括与增强CAR-T细胞迁移、减少耗竭及提升细胞毒性作用相关的关键因子(CXCL9、CXCL10、TNFRSF9、IL-8、IL-10和IFN-γ)呈现渐进性升高趋势;抗炎介质、负性调控因子及T细胞活化标志物(LILRB4、LAG3、NFATC3、CD83、CD28)显著上调,而促炎分子(TREM1、SLAMF1)则明显下调,免疫系统恢复正常平衡状态。

研究还动态观察了CAR-T细胞输注后对B功能的影响,发现重建后的B细胞主要表现为初始表型,并且CD24high CD38high 过渡性Breg细胞上调,记忆性B细胞、年龄相关性B细胞、浆母细胞及浆细胞下调;反映B细胞活化/抗原提呈标志物(OX40L、CD70、CD80、CD86和CD83)下调,促炎因子(IL-6和GM-CSF)下调,抑炎因子(IL-10)上调。研究发现,CAR-T细胞输注后T细胞功能同样发生显著改变,其中最显著的特征是CD4/CD8 T细胞比例出现倒置;在B细胞删除期,CD8+ T细胞的关键细胞毒性效应分子(包括IFN-γ、CD107a、穿孔素和颗粒酶B)上调,而B细胞重建后这些标记大多下降,但IFN-γ保持持续升高水平;相比之下,CD4+T细胞在B细胞缺失时呈现抗炎特征,表现为IL-10表达增加和促炎细胞因子(IL-6、IFN-γ和TNF-α)水平降低,这些细胞因子在B细胞重建期间逐渐恢复;此外,研究还发现T细胞激活标记(CD25、CD69、CD27)和抑制受体(TIGIT、Lag3、PD-1)中,CD27的动态变化最显著,在B细胞删除期间于CD4+和CD8+T细胞表面表达显著增强,并在B细胞重建后下降。

此外,研究借助单细胞测序技术,系统阐释了1例复发患者CAR-T治疗后外周血和骨髓中免疫细胞及细胞通讯变化,并首次发现年龄相关B细胞(ABCs)中FCRL5分子表达上升与疾病复发相关,并且在新发MG以及使用利妥昔单抗治疗后复发的患者中同样上调,提示该分子可作为潜在干预新靶点。

三、研究结论

BCMA/CD19双靶点CAR-T细胞疗法安全性良好,且疗效显著,患者症状得到持久改善、致病性抗体转阴且完全停药。CAR-T细胞治疗后患者出现“免疫重置”,主要表现为致病性免疫细胞清除,以及初始细胞的重建,免疫系统恢复稳态与功能。然而,1例患者出现临床症状的复发,提示医患双方需要协同建立长期随访机制,通过定期临床评估与生物标志物监测实施疾病动态管理,为复发预警和精准干预提供依据。

该研究中,徐州医科大学附属医院黄小雨博士、张周傲医师、刘丹博士为论文共同第一作者,崔桂云教授、施明教授、张勇教授为共同通讯作者。

研究团队自2023年采用BCMA/CD19双靶点CAR-T细胞治疗方案,已完成对60余例难治性重症肌无力患者的临床干预,相关成果包括:报道国际首例双特异性CAR-T治疗MG案例,已被《中国重症肌无力诊断和治疗指南(2025版)》收录为参考文献(J Neurol. 2024;271(7):4655-4659. PMID: 38602546);报道国际首项双特异性CAR-T治疗难治性重症肌无力Ⅰ期临床研究(柳叶刀子刊EClinicalMedicine. 2025;90:103621. PMID: 41245531 );发表CAR-T治疗自身免疫性疾病前沿进展重磅综述(J Autoimmun. 2025;157:103495.PMID: 41138647)。

目前,该研究团队正在开展双靶点CAR-T治疗难治性重症肌无力II期临床研究,同时围绕FCRL5这一靶点设计新的CAR-T,并策划和开展新的基础和临床研究,为复发患者提供更精确治疗方案。

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  1. CONNECT:[ UseTime:0.000585s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000810s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000279s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000286s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000512s ]
  6. SELECT * FROM `set` [ RunTime:0.000179s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000541s ]
  8. SELECT * FROM `article` WHERE `id` = 460292 LIMIT 1 [ RunTime:0.000407s ]
  9. UPDATE `article` SET `lasttime` = 1773084980 WHERE `id` = 460292 [ RunTime:0.012622s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000363s ]
  11. SELECT * FROM `article` WHERE `id` < 460292 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000561s ]
  12. SELECT * FROM `article` WHERE `id` > 460292 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000448s ]
  13. SELECT * FROM `article` WHERE `id` < 460292 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002729s ]
  14. SELECT * FROM `article` WHERE `id` < 460292 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000895s ]
  15. SELECT * FROM `article` WHERE `id` < 460292 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001198s ]
0.092322s