编程细胞死亡连接体1 CD163中的表达 + 癌症中的瘤相关巨细胞 腺体破裂 微环境
Yilmaz Baş1, Bayram Yilmaz2, Serhat Furkan Acar1
1Department of Pathology, Faculty of Medicine.
Applied immunohistochemistry & molecular morphology : AIMM
|February 5, 2024
概括
在结肠腺癌腺体破裂微环境中的CD163+瘤相关巨细胞 (TAMs) 中高编程细胞死亡配体1 (PD-L1) 表达与生存率差相关. 在这些TAM上准PD-L1可能会提供新的免疫治疗策略.
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:
- 瘤微环境显著影响癌症的进展和患者的预后.
- 与瘤相关的巨细胞 (TAMs),特别是CD163+亚型,在塑造瘤微环境方面发挥着至关重要的作用.
- 在TAMs上的编程细胞死亡干1 (PD-L1) 表达与免疫逃避和临床结果有关.
研究的目的:
- 研究癌症腺破裂微环境,CD163+TAM中的PD-L1表达和结肠腺癌的预后之间的关联.
- 为了确定PD-L1表达在癌症腺破裂的特定微环境中的预后意义.
- 评估针对CD163+TAM针对结肠癌免疫疗法的PD-L1向潜力.
主要方法:
- 分析了在2010年至2019年期间诊断的122例结肠腺癌患者样本.
- 在使用"巨细胞分数"的癌症腺破裂微环境中的CD163+TAM中量化PD-L1表达 (克隆22C3).
- 统计分析以将PD-L1表达,CD163+TAM密度和临床变量与患者存活率相关联.
主要成果:
- 发现CD163+TAMs在癌症腺破裂的微环境中密度更高.
- 在TAMs上检测到PD-L1表达,特别是在瘤外围.
- 在TAM中的PD-L1表达率和生存时间 (P=0.015),临床阶段2 (P=0.038) 和初级瘤阶段3和4 (P=0.004,P=0.013) 之间观察到显著的相关性.
- 在CD163+TAM中,PD-L1表达率≥1%与死亡风险增加4.070倍有关.
结论:
- 在癌症腺破裂微环境中的CD163+TAM中高PD-L1表达是结肠腺癌总生存率差的重要指标.
- 这些发现表明,CD163+ TAMs表达的PD-L1有助于不利的临床结果.
- 向CD163+TAMs上的PD-L1代表了结肠癌免疫治疗的有希望的治疗策略.
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