淋巴切除化学疗法通过增强抗原呈现来增强新抗原导向的T细胞疗法
Shira Sagie1, Tomer Babu2, Chen Weller2
1Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot 7610001, Israel; Jusidman Cancer Center, Sheba Medical Center, Ramat Gan 52621, Israel.
Cell reports. Medicine
|December 17, 2025
概括
这项研究确定了一种T细胞受体 (TCR),T104,向许多癌症中常见的KRAS.G12V突变. 将TCR-T104治疗与化疗相结合,可以通过改善新抗原呈现来增强瘤细胞的杀死.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 癌症治疗方法 癌症治疗方法
背景情况:
- 采用细胞疗法 (ACT) 对固体瘤有希望,但有限的新抗原呈现阻碍了疗效.
- KRAS.G12V突变是结直肠,肺和胰腺癌中普遍存在的新抗原,具有治疗标.
- 增强新抗原呈现对于改善T细胞介导癌症的识别和消除至关重要.
研究的目的:
- 识别和表征一种向KRAS.G12V突变的T细胞受体 (TCR).
- 为了评估TCR-T104在识别和杀死KRAS.G12V表达瘤细胞方面的疗效.
- 研究结合T细胞治疗与淋巴切除化疗对瘤细胞杀死和新抗原呈现的协同效应.
主要方法:
- 对KRAS.G12V.特有的T104T细胞受体 (TCR) 的鉴定和表征.
- 在体外和体内评估TCR-T104介导的瘤细胞杀死.
- 对化疗对免疫蛋白酶活性和人类白细胞抗原 (HLA) -I表面表达的影响的分析.
- 进行HLA-免疫型的分析,以评估化疗引起的抗原格局的变化.
主要成果:
- TCR-T104可以选择性地识别和消除表达KRAS.G12V的瘤细胞.
- 结合淋巴损伤性化疗的联合治疗显著增强由TCR-T细胞,TIL和T细胞参与者杀死瘤细胞.
- 化疗上调免疫蛋白酶体活性和HLA-I表达,增加丰度和改变呈现.
- 化疗重塑瘤抗原格局,改善各种癌症类型的T细胞识别.
结论:
- TCR-T104是对KRAS.G12V突变癌症的有前途的治疗候选者.
- 化疗与T细胞疗法通过增强新抗原呈现和T细胞介导的瘤识别来协同作用.
- 优化组合疗法可以提高ACT的疗效,特别是在具有低新抗原丰度的瘤中.
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