升高的VCP ATPase活性与多系统蛋白质病变-1中的疾病发作相关
Sarah E Robinson1, Andrew R Findlay1, Shan Li1
1From the Department of Neurology (S.E.R., A.R.F., J.D., C.W.), Washington University in St. Louis, MO; John Walton Muscular Dystrophy Research Centre (S.L., F.W., M.S., J.D.-M.), Newcastle University and Newcastle Hospitals NHS Foundation Trusts, United Kingdom; and Division of Biology and Biological Engineering (T.-F.C.), California Institute of Technology, Pasadena.
与p97/VCP变异相关的多系统蛋白质病变-1 (MSP1) 显示了基因型-表型相关性. 在R155C变体中,较高的VCP ATPase活性与较早的疾病发作相关,表明治疗潜力.
科学领域:
- 遗传学和分子生物学
- 神经学 神经学
- 生物化学 生物化学
背景情况:
- 多系统蛋白质病变-1 (MSP1) 是一种晚发病的疾病,由p97/VCP的50多种致病变体引起.
- MSP1呈现出多种表型,包括肌肉病,帕杰特病,ALS和FTD,没有确立的基因型-表型相关性.
- 在MSP1病变发生过程中,VCP内在ATPase活性在MSP1病变发生过程中的作用尚不清楚.
研究的目的:
- 在MSP1.1.中确定基因型-表型相关性.
- 将这些相关性与VCP的内在ATPase活性联系起来.
- 探索针对VCP ATPase活性的潜在治疗策略.
主要方法:
- 从文献和患者登记册中确定了MSP1患者.
- 开始时的年龄和失去了行走能力被记录下来.
- 使用重组净化蛋白质测量VCP内在的ATPase活性.
主要成果:
- 在常见的VCP变体中,R155C显示出最早的发病平均年龄 (38.15±9.78岁).
- 早期发病与较高的VCP ATPase活性相关.
- 在五种变体中,在发病时的年龄和VCP ATPase活性之间发现了逆相关性 (r = -0.94,p = 0.01).
结论:
- 在体外VCPATPase活性与MSP1.1中的疾病发病相关.
- 这种相关性可能有助于预测已知或新型VCP变异患者的预后.
- 抑制VCP ATPase活性为MSP1.1提供了潜在的治疗途径.
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