共同准EBV的光和潜周期抗原,增加T细胞对抗淋巴瘤的功效
Sandhya Sharma1,2, Naren U Mehta2, Tim Sauer2
1Graduate Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX.
Blood advances
|April 19, 2024
概括
广泛的表现 针对乳液循环蛋白的爱斯坦-巴尔病毒 (EBV) 特定的T细胞 (BR-EBVSTs) 显示出对EBV+淋巴瘤的增强疗效. 这些工程T细胞为EBV相关的恶性瘤提供了一个有希望的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 病毒学 病毒学
背景情况:
- 埃普斯坦-巴尔病毒 (EBV) 特定的T细胞 (EBVST) 对移植后淋巴瘤有效,但对其他EBV+恶性瘤效果较差.
- 这种限制源于潜伏EBV抗原的异质表达和低免疫性 (例如,LMP1,LMP2,EBNA1,BZLF1).
- 在某些EBV+癌症中,通常高度表达和致癌的EBV光环蛋白代表了一个尚未探索的治疗标.
研究的目的:
- 研究EBVST的治疗潜力,以潜在和临床EBV抗原为目标.
- 开发和评估针对EBV相关的恶性瘤的广泛的EBVST (BR).
主要方法:
- 在EBV+霍奇金淋巴瘤活检中识别了病毒光环转录.
- 来自健康捐赠者和EBV+淋巴瘤患者的刺激外周血液单核细胞,使用溶性和潜伏的EBV蛋白质生成BR-EBVST.
- 与T2抗原特异性EBVST相比,评估了BR-EBVST在清除NSG小鼠自身EBV+瘤方面的有效性.
主要成果:
- 与T2抗原特异性EBVST相比,BR-EBVST在小鼠中显示出自身EBV+瘤的清除速度更快.
- BR-EBVSTs产生了更高水平的促炎细胞因子,可能会重新激活免疫抑制瘤微环境.
- 这些发现证实了光环抗原作为EBV+淋巴瘤的治疗点的临床相关性.
结论:
- 炎症周期抗原是Epstein-Barr病毒相关淋巴瘤的临床相关点.
- 广泛的谱 EBVSTs代表了复发/耐药EBV+淋巴瘤和其他EBV相关的恶性瘤的有前途的治疗策略.
- 目前正在进行临床试验,以评估BR-EBVSTs (NCT01555892,NCT04664179).
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