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Cancer Res:HDAC抑制剂可促进单抗药物对HER2阳性肿瘤的治疗效果

2017-03-06 佚名 生物谷

最近来自澳大利亚墨尔本的研究人员发现组蛋白去乙酰化酶抑制剂可以发动宿主免疫作为其抗肿瘤效应的一个基础。该研究为增强一些肿瘤免疫治疗药物的杀伤作用提供了新的方向。在这项发表在国际学术期刊Cancer Research上的研究中,研究人员发现组蛋白去乙酰化酶抑制剂panobinostat可以通过宿主免疫增强trastuzumab这种单抗治疗药物的


最近来自澳大利亚墨尔本的研究人员发现组蛋白去乙酰化酶抑制剂可以发动宿主免疫作为其抗肿瘤效应的一个基础。该研究为增强一些肿瘤免疫治疗药物的杀伤作用提供了新的方向。

在这项发表在国际学术期刊Cancer Research上的研究中,研究人员发现组蛋白去乙酰化酶抑制剂panobinostat可以通过宿主免疫增强trastuzumab这种单抗治疗药物的抗肿瘤效果。在天生对trastuzumab比较敏感的HER2阳性肿瘤中,用panobinostat进行联合治疗可以削弱AKT信号途径并触发缺少固有或适应性免疫效应细胞的小鼠其体内肿瘤的退化。但是对于抵抗trastuzumab治疗的HER2阳性肿瘤来说,panobinostat和trastuzumab这两种药物协同推动宿主抗癌免疫应答的能力是非常重要的。

研究人员发现在抵抗trastuzumab的HER2阳性AU565pv异种移植模型和组成型表达有活性的AKT的BT474肿瘤中,panobinostat能够增强抗体依赖性细胞介导的由trastuzumab发挥的细胞毒性功能。

进一步研究表明由IFN-γ介导的,CXCR3依赖性的肿瘤相关NK细胞的增加为panobinostat和trastuzumab这两种药物的治疗作用提供了基础。

这些结果强调了组蛋白去乙酰化酶抑制剂panobinostat发挥的免疫增强效应,提供了有力的证据表明这种组蛋白去乙酰化酶抑制剂可以帮助trastuzumab触发NK细胞介导的免疫应答,对抵抗trastuzumab的HER2阳性肿瘤进行有效杀伤。该研究为HER2阳性肿瘤的治疗提供了新的策略。

原始出处

Mikolaj Medon,et al. HDAC inhibitor panobinostat engages host innate immune defenses to promote the tumoricidal effects of trastuzumab in HER2+ tumors. DOI: 10.1158/0008-5472.CAN-16-2247.

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    2017-10-26 lingaifan
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    2017-12-25 jklm09
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