CELL:LSD1缺失增强肿瘤免疫原性

2018-06-27 海北 MedSci原创

染色质调节因子在调控基因表达方面发挥着广泛的作用,并且,当其出现错误时可能导致癌症。

染色质调节因子在调控基因表达方面发挥着广泛的作用,并且,当其出现错误时可能导致癌症。

最近,来自哈佛大学医学院和波士顿儿童医院的研究人员证明,癌细胞中组蛋白脱甲基酶LSD1的缺失增加重复元件表达,包括内源性逆转录病毒元件(ERV),并减少RNA诱导沉默复合物(RISC)组分的表达。

重要的是,这会导致双链RNAdsRNA)应激和1型干扰素的激活,其刺激抗肿瘤T细胞免疫,并抑制肿瘤生长。此外,LSD1缺失增强了肿瘤免疫原性和T细胞在低免疫原性肿瘤中的浸润,并引起检查点阻断-难治性小鼠黑素瘤对于抗PD-1疗法的显着反应。

一致的是,TCGA数据分析显示,LSD1表达与各种人类癌症中CD8+ T细胞浸润之间呈负相关。

因此,该研究表明LSD1是一种有效的抗肿瘤免疫抑制剂和对免疫治疗反应的抑制剂,并提示LSD1抑制作用与PD-L1阻断联合作为一种新的癌症治疗策略。


原始出处:
Sheng W et al. LSD1 Ablation Stimulates Anti-tumor Immunity and Enables Checkpoint Blockade. CELL 2018, DOI: 10.1016/j.cell.2018.05.052

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    2018-06-27 zdvfsadb

    学习了

    0

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    2018-06-27 龙胆草

    学习谢谢分享

    0

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    2018-06-27 哈哈869

    买了

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    2018-06-27 kafei

    学习了谢谢分享

    0

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