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描述性研究瘤免疫微环境和埃普斯坦-巴尔病毒感染在胃腺癌的描述性研究

Lucy Bravo-Luna¹, Rosa Amalia Dueñas-Cuellar², Victoria Eugenia Niño-Castaño²

¹Department of Pathology, Universidad del Cauca, Colombia. Department of Pathology Universidad del Cauca Colombia.

Acta gastroenterologica Latinoamericana

|December 4, 2025

概括

这项研究分析了来自哥伦比亚考卡的胃癌样本,揭示了具有特定免疫细胞透和爱斯坦-巴尔病毒存在的非典型瘤微环境. 这些发现突显了胃癌的异质性,需要进一步分析.

科学领域:

在瘤学瘤学.
免疫学免疫学免疫学
病理学病理学病理学

背景情况:

胃癌在哥伦比亚Cauca地区的发病率很高.
有限的研究存在于这种特定的地理区域的胃癌的瘤微环境.

研究的目的:

来自Cauca的晚期肠类胃腺癌中的瘤微环境的特征.
评估CD3 +,CD8 + T细胞透,PD-1和PD-L1表达以及爱斯坦-巴尔病毒 (EBV) 感染.

主要方法:

24个胃切除样本的描述性横截面研究.
针对CD3,CD8,PD-1和PD-L1.1的免疫组织化学
以爱斯坦-巴尔病毒编码的小RNA在位杂交 (EBER-ISH) 用于EBV检测.

主要成果:

CD3+和CD8+T细胞的阳性分别为21.8%和14.8%.
100%的样本显示PD-1表达低;20.8%的样本检测出EBV阳性.
对于PD-L1的综合阳性得分 (CPS) 在大多数情况下 (91.7% <1) 表示表达低.

结论:

与现有文献相比,Cauca的晚期胃腺癌表现出不典型的瘤微环境.
胃癌瘤微环境的异质性强调了分析微卫星不稳定的相关性.

关键词:

CD8阳性的T淋巴细胞.爱斯坦-巴尔病毒病毒.疹病毒 4 人类病毒胃的新生瘤胃的新生瘤编程细胞死亡 1 连接体 2 蛋白质

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