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微卫星的表型概况稳定,在胃腺癌中具有表皮转移到介质细胞转变亚型
Marwa Lakhal1,2, Sarra Ben Rejeb1,3,4, Alia Zehani3,5,6
1Faculty of Medicine of Tunis, Research Unit of Epithelial to Mesenchymal Transition in Tumour Pathology (UR17ES17), University Tunis El-Manar of Tunis, Tunis, Tunisia.
International journal of surgical pathology
|November 17, 2025
概括
胃癌亚型的微卫星稳定性与上皮转移到介质细胞转变 (MSS/EMT) 非常普遍,与年轻患者和特定组织学相关. 这种侵略性亚型的特点是瘤透的淋巴细胞的低水平,这表明潜在的治疗耐药性.
科学领域:
- 在瘤学瘤学.
- 癌症生物学 癌症生物学
- 瘤微环境研究 研究
背景情况:
- 显微卫星稳定性与上皮转移到介质细胞转变 (MSS/EMT) 亚型代表具有不良预后的侵袭性胃瘤.
- 了解MSS/EMT亚型的特征对于改善患者的治疗结果至关重要.
研究的目的:
- 为了描述MSS/EMT胃癌亚型.
- 调查MSS/EMT与临床病理特征之间的关联.
- 分析MSS/EMT与瘤微环境元素 (如瘤透淋巴细胞和瘤芽) 之间的关系.
主要方法:
- 胃癌患者双中心队列的回顾性分析.
- 选择微卫星稳定的样本.
- 对E-cadherin,β-catenin和指E-box结合 homeobox 1 的免疫组合化学评估,以确定表皮细胞转化为介质细胞转化 (EMT).
主要成果:
- 在43%的病例中发现了MSS/EMT亚型,比之前报告的更高的患病率.
- 患有MSS/EMT瘤的患者显著年轻,并且具有扩散/混合组织学.
- MSS/EMT亚型与瘤透淋巴细胞密度低相关 (p < 10−3),但与瘤芽无关.
结论:
- 胃癌的MSS/EMT亚型非常普遍和明显.
- 这种亚型与免疫抑制性瘤微环境相关,以低瘤透淋巴细胞密度为标志.
- 这些发现表明,在MSS/EMT胃癌亚型中,潜在的治疗耐药性.
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