T细胞耗尽和树突细胞介导的三级淋巴体结构 (TLSs) 调制影响对微卫星中新辅助化学放射治疗的反应 稳定的直肠癌
Miao Wang1, Jiejun Shi1, Kai Xu2
1Department of General Surgery, Tongji Hospital affiliated to Tongji University, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|November 5, 2025
概括
对于微卫星稳定 (MSS) 患者的局部晚期直肠癌 (LARC),瘤微环境特征,特别是早期耗尽的T细胞 (早期Tex) 和三级淋巴体结构 (TLS),预测对新辅助化学放射治疗 (neoCRT) 的反应.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 癌症研究 癌症研究
背景情况:
- 局部晚期直肠癌 (LARC) 带来了治疗挑战,特别是对于微卫星稳定 (MSS) 患者,免疫治疗反应有限.
- 术后的新辅助化疗放射治疗 (neoCRT) 是MSS LARC的标准,但反应各不相同.
- 瘤微环境 (TME) 显著影响治疗疗效.
研究的目的:
- 研究早期耗尽的T细胞 (早期Tex) 和三级淋巴体结构 (TLS) 在预测MSS LARC中新CRT反应中的作用.
- 识别与治疗结果相关的TME内的免疫特征.
- 探索LAMP3+树突细胞 (DC) 在TLS形成中的功能及其对治疗反应的影响.
主要方法:
- 在瘤样本上进行了多个omics分析.
- 包括早期Tex细胞在内的T细胞耗尽标志物的表征.
- 评估三级淋巴体结构 (TLS) 的丰度,激活和成熟度.
- 研究LAMP3+树突细胞 (DC) 和IRF8在TLS调控中的作用.
主要成果:
- TME的免疫特征,而不是突变状态,与MSS LARC中的neoCRT反应有很强的相关性.
- 早期Tex细胞在响应者中被丰富,并与有利的结果相关.
- 与非响应者相比,响应者表现出更多的丰富,激活和成熟的TLS.
- LAMP3+直流抑制TLS形成,由IRF8调节,影响治疗反应.
结论:
- 早期Tex细胞和TLS是预测MSS LARC中neoCRT反应的有希望的生物标志物.
- 通过对LAMP3+ DCs的调制来准TLS形成,可以优化neoCRT的有效性.
- 了解TME免疫格局对于LARC的个性化治疗策略至关重要.
相关概念视频
The Tumor Microenvironment
7.6K
Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
7.6K
Tumor Immunotherapy
1.7K
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
1.7K


