不适合移植的大 B 细胞淋巴瘤二线使用 axicabtagene ciloleucel:ALYCANTE 最终分析
Second-line axicabtagene ciloleucel in large B-cell lymphoma ineligible for transplantation: ALYCANTE final analysis.
CELL INTELLIGENCE · 肿瘤细胞治疗研究
肿瘤细胞治疗研究
英文原题:Structure-guided engineering of immunotherapies targeting TRBC1 and TRBC2 in T cell malignancies.
Structure-guided engineering of immunotherapies targeting TRBC1 and TRBC2 in T cell malignancies.
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外周T细胞淋巴瘤通常具有侵袭性且预后不良。与其他血液系统恶性肿瘤不同,缺乏能够区分健康细胞与恶性细胞的靶抗原限制了免疫治疗方法的疗效。T细胞受体以互斥方式表达两种高度同源的链之一[T细胞受体β链恒定区(TRBC)结构域1和2],使其成为一个有前景的靶点。在此,我们通过结构引导的计算生物学进行合理设计,展示了特异性重定向,生成了针对TRBC2的特异性抗体(KFN),补充了我们实验室此前描述的具有独特TRBC1特异性的抗体(Jovi-1),从而靶向克隆性表达这两种链中任一种的更广谱T细胞恶性肿瘤。这使得能够生成分别针对TRBC1和TRBC2的配对试剂(CAR-T 细胞),并具有临床前证据支持其在T细胞恶性肿瘤中的疗效。
Peripheral T cell lymphomas are typically aggressive with a poor prognosis. Unlike other hematologic malignancies, the lack of target antigens to discriminate healthy from malignant cells limits the efficacy of immunotherapeutic approaches. The T cell receptor expresses one of two highly homologous chains [T cell receptor β-chain constant (TRBC) domains 1 and 2] in a mutually exclusive manner, making it a promising target.
Here we demonstrate specificity redirection by rational design using structure-guided computational biology to generate a TRBC2-specific antibody (KFN), complementing the antibody previously described by our laboratory with unique TRBC1 specificity (Jovi-1) in targeting broader spectrum of T cell malignancies clonally expressing either of the two chains. This permits generation of paired reagents (chimeric antigen receptor-T cells) specific for TRBC1 and TRBC2, with preclinical evidence to support their efficacy in T cell malignancies.
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