1.1 什么是Adoptive T-cell therapy(过继性T细胞疗法)? 过继性T细胞疗法(Adoptive T-cell therapy, ACT)是一种利用患者自身T细胞来治疗恶性肿瘤的细胞免疫疗法。ACT的核心是将患者体内的T细胞分离出来,在体外进行扩增、基因改造或激活,以增强其抗肿瘤能力,然后再回输到患者体内。ACT主要包括以下几种方法:
近期两个研究小组提出,靶向其他在多发性骨髓瘤细胞上表达的分子——跨膜激活剂及钙调亲环素配体相互作用分子(TACI)和G蛋白偶联受体(GPRC5D)可作为CAR-T治疗的新靶点;此外,以间皮素为靶点的CAR-T疗法近年来被广泛应用于胰腺癌、肺癌和卵巢癌等...
Initially, T cell engineering depended on lentiviral or retroviral vectors to deliver DNA fragments into a cell for homologous recombination. Viral vectors allow for stable integration of DNA fragments and long-term expression. However, the clinical-grade reagents needed to obtain these vectors are cos...
Multiple myeloma (MM) remains a challenging hematologic malignancy despite advancements in chimeric antigen receptor T-cell (CAR-T) therapy. Current targets of CAR-T cells used in MM immunotherapy have limitations, with a subset of patients experiencing antigen loss resulting in relapse. Therefore, ...
在抗原非依赖性强直信号传导验证方面,Adiect公司发布的关于同种异体 CD20 靶向 γδ T 细胞的研究中,证明了CD20 CAR 仅在细胞表面表达,CAR相关磷酸化 CD3ζ仅在 CAR 刺激后检测到,不会在 Vδ1 γδ T 细胞中诱导抗原非依赖性强直信...
2022年8月18日,牛津大学和法兰克福大学学者在 Cell 上联合发表了研究论文Structure of a fully assembled tumor-specific T cell receptor ligated by pMHC。该研究利用冷冻电子显微镜等技术,首次描述了肿瘤特异性T细胞受体与激活配体结合时的结构。让研究者感到意外的是,与其他受体不同,T细胞受体在激活时并不会改变...
CAR-T cells show promise for targeting resistant breast cancer subtypes.CAR-T cells target tumor-specific antigens in breast cancer.Breast cancer immunosuppressive microenvironment hinders CAR-T cell function.Targeting novel tumor antigens could enhance CAR-T specificity in breast cancer.CAR structure ...
▉CAR-T治疗其他疾病的 情况 Treg细胞在调节自身免疫性疾病中起着重要作用,随着CAR-T疗法的成熟,采用CAR来修饰Treg细胞,即CAR-Treg疗法可将Treg细胞引导到达免疫环境中,发挥特异性的免疫抑制功能。TxCell公司(2018年被Sangamo收购)在CAR-Treg领域处于领先地位,其自主开发的HLA-A2 CAR-Treg细胞疗法已经进入临床。近年...
2022年8月18日,牛津大学和法兰克福大学学者在 Cell 上联合发表了研究论文Structure of a fully assembled tumor-specific T cell receptor ligated by pMHC。 该研究利用冷冻电子显微镜等技术,首次描述了肿瘤特异性T细胞受体与激活配体结合时的结构。让研究者感到意外的是,与其他受体不同,T细胞受体在激活时并不会改变其...
Basics of CAR T-cells CAR T-cell product heterogeneity is affected by CAR structure [24,25,26], T cell subtype [27] and product manufacturing process [28], which influences the efficacy and safety of CAR T-cell therapy. Single-cell sequencing technologies can systematically evaluate the impact...