质瘤中的MAPK/ERK信号调节干扰素反应,T细胞招募,微质表型和免疫检查点阻断疗效
Kwang-Soo Kim1,2, Junyi Zhang3,4,5,6, Víctor A Arrieta1,2
1Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
bioRxiv : the preprint server for biology
|September 30, 2024
概括
MAPK/ERK通路通过影响T细胞透和干扰素反应来调节质母细胞瘤对免疫治疗的反应. 准这种途径可以提高这种具有挑战性的脑癌的治疗疗效.
科学领域:
- 神经瘤学神经瘤学
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 质母细胞瘤 (GB) 在神经瘤学中构成了重大挑战.
- 免疫检查点封锁 (ICB) 在未经选择的GB患者中有效性有限.
- MAPK/ERK信号与ICB治疗的复发性GB的生存有关,但其因果作用尚不清楚.
研究的目的:
- 调查MAPK/ERK信号传递与质母细胞瘤中ICB敏感性之间的因果关系.
- 阐明MAPK/ERK信号影响瘤免疫性和瘤微环境的机制.
- 确定潜在的治疗目标,以提高英国的ICB疗效.
主要方法:
- 在活体中,在小鼠质瘤中进行基因组范围的CRISPR/Cas9选.
- 生存研究验证关键基因.
- 单细胞RNA测序 (scRNA-seq) 使用p-ERK染色.
- 在人类GB样本上的空间转录学.
- 活体切片培养BRAFV600E基因突变的GB接受了BRAFi/MEKi的治疗.
主要成果:
- 该MAPK通路,特别是RAF-MEK-ERK,关键调节质瘤对CD8+T细胞和抗PD-1疗法的敏感性.
- 实验诱导的ERK酸化增强了ICB的生存率,促进了持久的抗瘤免疫力和记忆T细胞透.
- 增加的p-ERK与增加的干扰素反应,抗原呈现和GB的T细胞透相关.
- 在人类的GB细胞中,MAPK/ERK通路调节了干扰素反应和抗原呈现,并在BRAFV600E GB模型中破坏了瘤细胞-微质相互作用.
结论:
- MAPK/ERK通路是质母细胞瘤细胞对抗瘤免疫的敏感性的关键调节者.
- 这一途径影响瘤微环境中的干扰素反应,抗原呈现和微质相互作用.
- 准MAPK/ERK通路是一个有前途的策略,可以提高质母细胞瘤的免疫治疗疗效.
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