对肌肉切除组织的蛋白质和蛋白质分析揭示了sarcomeric和基因类型负的超性心肌病之间的差异
Ramin Garmany1,2, J Martijn Bos2,3,4, Surendra Dasari5
1Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic Alix School of Medicine and the Mayo Clinic Medical Scientist Training Program, Rochester, MN, USA.
Scientific reports
|September 1, 2023
概括
过度缩性心肌病 (HCM) 的遗传检测识别了具有瘤基因突变 (HCMSarc) 的患者,这些患者表现出更严重的疾病. 这项研究揭示了HCMSarc患者中增强的蛋白质和蛋白质调节失调,这可能解释了他们的较差结果.
科学领域:
- 分子生物学分子生物学
- 心血管遗传学 心血管遗传学
- 蛋白质组学和光蛋白质组学
背景情况:
- 增高性心肌病变 (HCM) 是一种遗传多样性的心肌疾病.
- 大约50%的HCM病例缺乏可识别的遗传原因或在遗传上仍然难以捉摸.
- 与基因检测结果为阴性 (HCMNeg) 的患者相比,具有基因确认的萨尔科默基基因突变 (HCMSarc) 的患者往往出现更早发病和更严重的疾病.
研究的目的:
- 调查HCMSarc和HCMNeg之间观察到的临床差异是否与不同的蛋白质和蛋白质样本有关.
- 为了确定在基因定义的HCM亚型中失调的特定分子通路.
主要方法:
- 使用TMT标记质谱仪进行定量蛋白质和蛋白质分析.
- 在15个HCMSarc,8个HCMNeg和7个对照样本中比较蛋白质表达和酸化水平.
- 生物信息路径分析以确定显著改变的生物过程.
主要成果:
- 在HCMSarc和HCMNeg组之间,有243种蛋白质的显著差异表达和257种蛋白质的差异酸化.
- 大约90%的改变途径与疾病机制有关.
- 在这些与疾病相关的途径中,HCMSarc组表现出更明显的蛋白质和蛋白质变化.
结论:
- 基因定义的多变性心肌病 (HCMSarc) 与HCMNeg相比,其特点是增强的蛋白质和蛋白质调节失调.
- 这些分子差异可能是萨科默基基因突变患者中观察到的更严重的临床表型的基础.
- 蛋白质和蛋白质分析提供了对高性心肌病中基因型-表型相关性的洞察.
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