GRP78-CAR T细胞对抗固体和脑瘤的作用受 GRP78 对T细胞表达的作用控制
Jorge Ibanez1, Nikhil Hebbar1, Unmesha Thanekar1
1Department of Bone Marrow Transplantation and Cellular Therapy, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA.
Cell reports. Medicine
|November 22, 2023
概括
化学抗原受体 (CAR) T细胞疗法在向癌症方面表现有前途. 研究人员确定了细胞表面葡萄糖调节蛋白78 (GRP78) 作为CAR T细胞针对各种瘤的可行的点.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 基于T细胞的免疫疗法因缺乏可向抗原而面临局限性.
- 展开的蛋白质响应 (UPR) 途径对于癌细胞存活,增殖和转移至关重要.
- 葡萄糖调节蛋白78 (GRP78),一个关键的UPR调节器,过度表达,存在于许多癌症的细胞表面.
研究的目的:
- 评估细胞表面GRP78作为化学抗原受体 (CAR) T细胞免疫疗法的点.
- 评估GRP78特异性CAR T细胞对固体和脑瘤的疗效.
主要方法:
- 在各种固体和脑瘤细胞系上GRP78表达的表征.
- 开发和测试GRP78特异性CAR T细胞的体外和体外模型.
- 对CAR T细胞激活后GRP78表达动态的分析.
主要成果:
- 细胞表面GRP78在多个固体和脑瘤中高度表达.
- GRP78-CAR T细胞在体外和体内有效地识别和消除了GRP78阳性瘤.
- 观察到CAR T细胞在激活后的GRP78上调,但这是瘤细胞系特异性的.
结论:
- 细胞表面GRP78是开发用于各种癌症的新型CAR T细胞疗法的有希望的目标.
- GRP78-CAR T细胞对表达GRP78的瘤具有治疗潜力.
- GRP78表达的瘤特异性可能会影响CAR T细胞的治疗反应.
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