综合性自我抗原查,以评估乱交T细胞受体中的交叉反应性
Govinda Sharma1,2, Fei Teng1,2, James Round1,2
1Michael Smith Genome Sciences Centre, British Columbia Cancer Research Institute, Vancouver, BC, Canada.
Frontiers in immunology
|January 21, 2026
概括
开发T细胞受体 (TCR) 疗法需要对疗效和安全进行查. 这项研究引入了一种高通量方法,用于将TCR与庞大的类库进行选,在开发的早期确定潜在的非目标效应.
科学领域:
- 免疫学 免疫学 免疫学
- 生物技术是生物技术.
- 药物发现 药物发现 药物发现
背景情况:
- T细胞受体 (TCR) 疗法提供向的细胞内抗原识别,但在工程有效性和防止非向自动反应方面面临挑战.
- 准确地描述TCR与自我抗原的相互作用,对于安全有效的治疗开发至关重要.
研究的目的:
- 开发和验证一种功能性高通量选 (HTS) 方法,用于分析T细胞受体 (TCR) 与广泛的类库的相互作用.
- 通过对基因组编码的和自我抗原选候选TCR来评估非标毒性风险.
- 在TCR治疗开发中建立强大的毒性查和公正的表位发现策略.
主要方法:
- 工程候选治疗TCR的功能性高通量查与全面的自我抗原细胞库对比.
- 利用Tope-seq技术对大型表位图书馆 (>5 × 10 ^ 5 个独特的编码序列) 进行选,以对比一个模型的治疗TCR.
- 实施代生物扫描和生物信息学改进,以提高查的灵敏度和准确性.
主要成果:
- 在初始查中成功检测出已知来自大型库 (>5 × 10^5 序列) 的交叉反应性表位,具有高统计学意义 (p < 0.01).
- 在一个前所未有的图书馆大小 (>2 × 10 ^ 7编码DNA片段) 上展示了功能性TCR查的第一个原理证明.
- 在活细胞环境中验证了HTS方法的有效性,用于在活细胞环境中无偏见的TCR表位发现和毒性评估.
结论:
- 开发的HTS平台能够有效和公正地发现TCR表位和评估目标外毒性.
- 这种方法显著提高了TCR治疗开发的"体外"方法的潜力,解决了关键的工程和安全挑战.
- 这些发现支持使用功能性TCR查来优化治疗疗效,并最大限度地降低与非目标自动反应相关的风险.
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