Nat Neurosci:研究揭秘早期癌症无痛觉的原因,癌症再也无法伪装!

2017-05-24 Heather_z727 来宝网

免疫疗法曾经被认为是治疗癌症的新突破,然而关于免疫疗法的副作用不断引起医学界的关注,如严重的过敏反应,急性糖尿病和心脏损伤等。用于免疫疗法的药物通过激活自身免疫系统抗击癌症,成功率只有五分之一,因此很多病患都在犹豫,是否值得尝试。

免疫疗法曾经被认为是治疗癌症的新突破,然而关于免疫疗法的副作用不断引起医学界的关注,如严重的过敏反应,急性糖尿病和心脏损伤等。用于免疫疗法的药物通过激活自身免疫系统抗击癌症,成功率只有五分之一,因此很多病患都在犹豫,是否值得尝试。

近日,来自杜克大学的一项研究为我们带来好消息,此次研究可以提前预测病人是否适合使用免疫疗法。研究表明,免疫疗法的常用药物单抗阻隔的PD-L1分子不仅可以用于免疫疗法,还是疼痛的神经细胞信号,因此,可以通过简单的疼痛测试来验证病人是否适用于免疫疗法。

研究人员表示:“癌细胞是非常聪明的,我们已经知道它们产生PD-L1来抑制免疫系统,与此同时,还有另外一个防御系统也能够产生作用,那就是疼痛系统。我们知道这一臭名昭着的分子可以掩盖疼痛,这才会让癌症发展或者扩散初期没有任何征兆。”

在初期阶段,癌细胞在一个特定的组织或者器官开始生长和繁殖,这种过程通常是没有痛感的。但随着癌症变得越来越激烈,并且向全身蔓延的时候,这些细胞分泌出成千上万的痛觉化学物质,或引发痛觉神经纤维,产生新的痛觉因子。这时,痛苦可以变得无法忍受,有些癌症患者死于阿片类药物过量。

在试验过程中,研究人员通过增加或者减少PD-L1的数量来观察患癌小鼠的疼痛反应,研究人员收到可喜的结果,通过此次试验我们可以测试患者对于抗癌疗法的有效性,减少病患的痛苦。

原始出处:

Gang Chen, Yong Ho Kim, Hui Li, et al. PD-L1 inhibits acute and chronic pain by suppressing nociceptive neuron activity via PD-1. Nature Neuroscience (2017). DOI: 10.1038/nn.4571.

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    2018-04-22 liye789132251
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    2017-05-26 lsndxfj
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    2017-05-25 184****9840

    如能早期发现,癌症就有救了。

    0

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    2017-05-24 sy3923582

    不错哦,学习了

    0

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