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对抗CSF-1R治疗的纤维性反应增强了质母细胞瘤复发的可能性

Spencer S Watson¹, Anoek Zomer², Nadine Fournier³

¹Department of Oncology, University of Lausanne, 1011 Lausanne, Switzerland; Ludwig Institute for Cancer Research, University of Lausanne, 1011 Lausanne, Switzerland; Agora Cancer Research Center Lausanne, 1011 Lausanne, Switzerland; Agora Cancer Centre, University Hospital Lausanne, 1011 Lausanne, Switzerland; Lundin Brain Tumour Centre, University Hospital Lausanne, 1011 Lausanne, Switzerland.

|September 10, 2024

概括

用CSF-1R抑制剂向与脑瘤相关的免疫细胞可以使质母细胞瘤回归. 然而,纤维性痕促进复发,这表明需要联合治疗才能长期存活.

科学领域:

神经瘤学神经瘤学
癌症免疫学癌症免疫学
瘤微环境研究研究

背景情况:

尽管目前的治疗方法,质母细胞瘤的复发仍然是一个重大挑战.
在临床前的质母细胞瘤模型中,通过向瘤相关的巨细胞和微质细胞,CSF-1R抑制显得有前途.
在CSF-1R抑制后的复发与纤维性痕有关,这是对抗瘤疗法的常见反应.

研究的目的:

调查纤维性痕在CSF-1R抑制后质母细胞瘤复发中的作用.
确定驱动纤维化反应的机制及其对瘤休眠和免疫逃避的影响.
评估组合疗法以克服与治疗相关的纤维化并改善存活率.

主要方法:

用CSF-1R抑制剂治疗的临床前质母细胞瘤模型.
在治疗后对瘤微环境进行多组分析.
纤维性痕的组织病理学和分子特征.
对TGF-β信号和神经炎症的组合抑制的评估.

主要成果:

在反质瘤治疗后复发的瘤中,一直观察到纤维性痕.
纤维化区域被确定为支持质瘤细胞休眠和免疫抑制的前瘤.
周血管纤维细胞样细胞,由TGF-β信号和神经炎症激活,介导纤维化.
结合抑制纤维化驱动路径在临床前模型中显著改善了生存率.

结论:

纤维性痕是CSF-1R抑制后质母细胞瘤复发的关键机制.
与CSF-1R抑制剂结合向纤维化通路提供了一个有前途的策略,以提高治疗疗效.
了解瘤微环境在治疗耐药性中的作用,对于开发有效的质母细胞瘤疗法至关重要.

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