通过空间蛋白质组学来识别生物标志物,以表征不确定的甲状腺结节
Giulia Capitoli1,2, Antonio Maria Alviano3, Nicole Monza4
1Bicocca Bioinformatics Biostatistics and Bioimaging Research Centre - B4, Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy. giulia.capitoli@unimib.it.
Endocrine
|August 11, 2025
概括
蛋白质组分析确定了分子标记,以区分具有挑战性的甲状腺病变,包括NRAS突变瘤. 这些新型生物标志物可能有助于甲状腺结节的表征和了解疾病驱动因素.
科学领域:
- 生物化学 生物化学
- 蛋白质组学是指蛋白质组学.
- 分子生物学分子生物学
背景情况:
- 不确定的甲状腺结节带来了诊断挑战.
- 需要新的分子生物标志物来准确表征.
- 蛋白质组分析为生物标志物发现提供了一个有前途的方法.
研究的目的:
- 在挑战性甲状腺病变中探索蛋白质组分析以发现生物标志物.
- 为了识别用于分类甲状腺瘤组织学的分子特征.
- 为了区分NRAS突变 (mNRAS) 和NRAS野生型 (wtNRAS) 甲状腺瘤.
主要方法:
- 线性差异分析 (LDA) 应用于矩阵辅助激光吸附离子化质谱成像 (MALDI-MSI) 数据.
- 选择具有影响力的分子特征用于瘤分类和NRAS突变状态歧视.
- 使用纳米级液体染色学喷射电离子联质谱法 (nLC-ESI-MS/MS) 识别相关峰值.
主要成果:
- LDA确定了9个标记,区分了与其他组织学相似的核特征 (NIFTPs) 的非侵入性卵泡性甲状腺瘤 (NIFTPs) 和其他组织学 (准确率为73%).
- 选择了19个标记物来识别mNRAS病例 (84%的准确率).
- 假定确定了9种差异表达的蛋白质,包括具有特定分布模式的DDX42和Histone H4;在wtNRAS病例中,蛋白二硫化异构酶A1和补充物C4-B过度表达.
结论:
- 由LDA选择的特征有效地区分NIFTP,并区分mNRAS和wtNRAS案例.
- 识别的蛋白质标记物可以补充用于甲状腺结节特征的遗传分析.
- 这些发现提供了关于mNRAS与wtNRAS甲状腺病变的致病驱动因素的见解.
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