蛋白质组学分析确定MCM4是胰腺固体伪皮质瘤中术后转移的预后生物标志物
Ruizhe He1, Yuanhao Liu2, Ruikang Dun1
1Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China; State Key Laboratory of Complex, Severe, and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China.
概括
在胰腺瘤中MCM4蛋白质的阳性是转移风险的强有力的指标. 这一发现有助于确定患者需要更密切的监测后手术固体伪毛囊性瘤 (SPN).
科学领域:
- 在瘤学瘤学.
- 生物标志物发现发现
- 蛋白质组学是指蛋白质组学.
背景情况:
- 固体伪毛囊瘤 (SPN) 是一种罕见的胰腺瘤,切除后的存活率很高,但5-10%的患者会发生转移.
- 确定预后生物标志物对于管理SPN患者和预测转移风险至关重要.
- 目前的预后工具需要改进,以准确识别高风险个体.
研究的目的:
- 确定用于预测SPN术后转移的新型蛋白质生物标志物.
- 评估SPN转移中的MCM4 (微染色体维护复合体组件4) 的预后价值.
- 评估MCM4在SPN扩散中的作用及其与临床结果的关联.
主要方法:
- 在59名患者的初级SPN瘤上使用数据独立获取质谱法 (DIA-MS) 进行蛋白质基因分析.
- 在体外功能测试以调查MCM4在细胞增殖中的作用.
- 在255名SPN患者的独立多中心队列中,对MCM4表达的免疫组织化学 (IHC) 分析.
- 统计分析包括卡普兰-梅尔,考克斯回归和时间依赖的ROC曲线.
主要成果:
- 与非转移性瘤相比,转移性SPN瘤中MCM4蛋白显著上调.
- 阳性MCM4与较高的Ki-67增殖指数和转移发病率显著增加有关 (20.6%对4.1%).
- 在单变体和多变体分析中,MCM4阳性独立预测了更短的无转移生存期 (MFS),在ROC分析中具有高AUC值 (3年后0.817,5年后0.777).
结论:
- MCM4阳性是预测SPN术后转移风险的强大和独立的预后生物标志物.
- MCM4的增殖功能有助于其在SPN进展中的作用.
- 评估MCM4可以帮助优化术后管理和SPN患者分层.
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