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Blood:治疗白血病和骨髓瘤的新免疫疗法:人工在T细胞表达受体识别B细胞转录因子BOB1阳性的血癌细胞

2017-03-14 Leo.C MedSci原创

表达特定受体的T细胞专门识别BOB1阳性的B细胞可能成为一种新的治疗白血病和多种骨髓瘤的免疫疗法。

通过对病人的T细胞进行基因改造使其表达人造受体(chimeric antigen receptors, CAR)特定识别肿瘤抗原对于造血细胞的恶性肿瘤和实体肿瘤已经被证明是非常有效的免疫疗法。然而,有些肿瘤细胞可以通过不表达肿瘤抗原从而躲过T细胞,从而影响这种免疫疗法的功效以及大范围推广。

在这一期的Blood杂志中, Lorenz Jahn及其同事报道了在病人的T细胞中表达人工合成受体特别识别B细胞特有的转录因子BOB1,从而介导转化后的T细胞在体外实验中,能过特异性的识别并且杀死癌化的白血病B细胞,以及套细胞淋巴瘤(mantle cell lymphoma),以及多种骨髓瘤(myeloma)。当然转化后的T细胞也被观察到能过识别和杀死表达BOB1的正常B细胞。在体内实验中,在实验鼠上嫁接了多种骨髓瘤后,植入这种转化后的T细胞被证明能够杀死体内的癌细胞。并且不表达BOB 1的B细胞,以及非造血细胞并不受这种转化后的T细胞的影响。

因此,未来使用这种表达特定受体的T细胞专门识别BOB1阳性的B细胞可能成为一种新的治疗白血病和多种骨髓瘤的免疫疗法。 

原始出处:
Lorenz Jahn, Pleun Hombrink, Renate S. Hagedoorn et al., TCR-based therapy for multiple myeloma and other B-cell malignancies targeting intracellular transcription factor BOB1. Blood 2017 129:1284-1295; doi: https://doi.org/10.1182/blood-2016-09-737536.

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    2017-04-11 mjldent
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    2017-03-16 yxch36
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    2017-03-16 liuhuangbo

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