PNAS:人脑脊液中的朊蛋白定量——助力朊病毒病药物开发

2019-04-03 海北 MedSci原创

降低脑中的天然朊蛋白(PrP)水平是治疗或预防人朊病毒病的有吸引力的策略。任何PrP降低治疗剂的临床开发将需要适当的药效学生物标志物:用于量化PrP的实用且稳健的方法,并且可靠地证明其在活体患者的中枢神经系统(CNS)中的减少。

降低脑中的天然朊蛋白(PrP)水平是治疗或预防人朊病毒病的有吸引力的策略。任何PrP降低治疗剂的临床开发将需要适当的药效学生物标志物:用于量化PrP的实用且稳健的方法,并且可靠地证明其在活体患者的中枢神经系统(CNS)中的减少。

最近,研究人员评估了基于ELISA的人类脑脊液(CSF)中人类PrP定量的潜力,作为PrP减少治疗的生物标志物。

研究人员表明,CSF PrP在处理和储存过程中对塑料吸附非常敏感,但通过添加洗涤剂可以使其损失最小化。研究人员发现,血液污染不影响CSF PrP水平,并且CSF PrP和血红蛋白是不相关的,这一起表明CSF PrPCNS衍生的,支持其监测感兴趣组织的相关性,并且与脑中相对于血液高的PrP丰度保持一致。

在具有受控样本处理的队列中,CSF PrP表现出良好的受试者内重测信度(平均变异系数,相隔8-11周收集的样本中的13%),足够稳定的基线以允许治疗上有意义的脑PrP减少的检测。

总之,这些发现提供了一种监测PrP降低药物在CNS中的作用的方法,并且将利用这种作用机制促进朊病毒病治疗剂的开发。


原始出处:

Vallabh SM et al. Prion protein quantification in human cerebrospinal fluid as a tool for prion disease drug development. PNAS, 2019; doi: 10.1073/pnas.1901947116.


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    2019-11-23 drwjr
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    2019-07-13 小微940490

    mark

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    2019-04-03 坚强007

    向挑战病魔的科研人员致敬!

    0

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