蛋白氨酸酸酶4A1 (PTP4A1) 调节结肠直肠癌早期事件 在老年男性宿主中腹腔内传播
Zhikun Wang1,2, Yueying Liu1,2, Jing Yang1,2
1Department of Chemistry & Biochemistry, University of Notre Dame, Notre Dame, Indiana, US.
Aging and cancer
|March 2, 2026
概括
老年雄性小鼠的结直肠癌 (CRC) 转移率最高. 蛋白氨酸酸酶4A1 (PTP4A1) 在老年男性中表达高,并促进转移,这表明它是CRC的治疗点.
科学领域:
- 在瘤学瘤学.
- 老年学是指老年学的学科.
- 免疫学 免疫学 免疫学
背景情况:
- 年龄和生物性别是癌症发病率和转移的重要风险因素.
- 结肠直肠癌 (CRC) 的发病率和转移死亡率在男性中比女性更高.
- 了解转移的性别和年龄差异对于向治疗至关重要.
研究的目的:
- 为了比较结肠直肠癌 (CRC) 转移负担,年轻人与老年雌性和雄性小鼠使用同基因小鼠腹腔内膜 (i.p.) 转移模型.转移模型.
- 为了识别与CRC转移的性别和年龄差异相关的腹介质细胞中差异表达的蛋白质.
- 调查已识别的蛋白质在癌症 - 中皮细胞相互作用中的作用,并探索潜在的治疗点.
主要方法:
- 使用了一种同源性小鼠腹腔内膜 (I.P.) 转移模型与MC-38结直肠癌 (CRC) 细胞.
- 量化瘤负担在年轻和老年雌雄小鼠的纵向和终点.
- 在初级小鼠腹膜间皮质细胞上进行了自下而上的蛋白质组分析,以确定差异表达的蛋白质.
主要成果:
- 年龄较大的雄性小鼠表现出最高的IP值. 转移性负担,回顾人类流行病学数据.
- 蛋白质组学分析发现,与其他队列相比,老年雄性小鼠中的蛋白氨酸酸酶4A1 (PTP4A1) 过度表达.
- 发现PTP4A1促进了癌细胞与甲状腺细胞的粘附,其抑制剂 (CMPD-43) 降低了RhoA活性和异型细胞的粘附.
结论:
- 这项研究提供了一个比较性蛋白质学资源,用于跨性别和基于年龄的队列的腹膜间皮细胞.
- 功能数据表明PTP4A1促进CRC转移,特别是在老年男性中.
- 在特定患者群体中,PTP4A1代表了阻止结直肠癌 (CRC) 转移的潜在治疗标.
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