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Blood:肿瘤特异性T细胞不能根除淋巴瘤起始B细胞!

2018-07-17 MedSci MedSci原创

中心点:在新的小鼠模型中,肿瘤特异性T细胞缺失会增加B细胞淋巴瘤的发生率。恶性淋巴瘤前体细胞的起始B细胞不会被免疫系统清楚,使得依然有进展成淋巴瘤的风险。摘要:迄今为止,我们对恶性B细胞(前体)与T细胞之间的相互作用知之甚少。Dana Hoser等人建立一种转基因小鼠,诱导B细胞特异性的癌基因——SV40大T抗原(TAg)表达,来研究肿瘤特异性T细胞在自发性B细胞淋巴瘤发展中的作用。在CD19-C

中心点:

在新的小鼠模型中,肿瘤特异性T细胞缺失会增加B细胞淋巴瘤的发生率。

恶性淋巴瘤前体细胞的起始B细胞不会被免疫系统清楚,使得依然有进展成淋巴瘤的风险。

摘要:

迄今为止,我们对恶性B细胞(前体)与T细胞之间的相互作用知之甚少。Dana Hoser等人建立一种转基因小鼠,诱导B细胞特异性的癌基因——SV40大T抗原(TAg)表达,来研究肿瘤特异性T细胞在自发性B细胞淋巴瘤发展中的作用。

在CD19-Cre x LoxP Tag小鼠中组成性表达TAg可导致TAg耐受性CD8+T细胞、B细胞淋巴瘤进展。与此相反,对于CD19 CreER[T2] x LoxP Tag小鼠,在其成年鼠的少量B细胞中诱导癌基因和TAg表达时,小鼠可保留TAg-CD8+T细胞,导致小鼠晚期形成罕见的淋巴瘤。

TAg特异性T细胞缺失时,淋巴瘤发生率增加,提示T细胞介导抑制淋巴瘤进展。但是,TAg-起始B细胞不能被T细胞清楚,在长时间里都可以检测到。

总而言之,本研究结果表明免疫系统不能根除淋巴瘤的起始B细胞,进而保留了患淋巴瘤的风险。

原始出处:

Dana Hoser,et al. Oncogene-specific T cells fail to eradicate lymphoma-initiating B cells in mice. Blood  2018  :blood-2018-02-834036;  doi: https://doi.org/10.1182/blood-2018-02-834036

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    2018-08-10 风铃830
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    2018-07-23 1e145228m78(暂无匿称)

    学习了,谢谢作者分享!

    0

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    2018-07-17 三生有幸9135

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