在神经母细胞瘤手术后,经外科手术的多样性 (I:C) 逆转了加速的瘤生长
Chenkai Mao1,2, Maria Poimenidou2,3, Donna McAllister2,3
1Department of Surgery, Medical College of Wisconsin, Milwaukee, WI 53226, United States.
ImmunoHorizons
|November 10, 2025
概括
手术可以通过抑制抗瘤免疫来加速高风险神经母细胞瘤 (HR-NB) 的生长. 在儿科癌症模型中,用聚I:C进行外科手术期间的免疫刺激有望减轻这种手术诱导的前瘤效应.
科学领域:
- 儿科瘤学 儿科瘤学
- 癌症免疫学 癌症免疫学
- 手术瘤学手术瘤学
背景情况:
- 手术是儿童癌症治疗的重要组成部分,但它对抗瘤免疫力和癌症复发的影响仍然不完全理解.
- 高危神经母细胞瘤 (HR-NB) 是一种常见的儿童癌症,尽管进行了手术,但其复发率很高.
- 在成人癌症中观察到的手术的前瘤效应也可能影响儿科瘤复发,需要进一步调查.
研究的目的:
- 在高风险神经母细胞瘤 (HR-NB) 的小鼠模型中研究手术对瘤生长和免疫调节的全身影响.
- 为了确定手术压力是否会导致儿童癌症的癌症复发或转移.
- 探索潜在的外科手术期间的干预措施,以抵消手术诱导的前瘤免疫反应.
主要方法:
- 开发HR-NB的小鼠模型,以评估手术对远程瘤生长和全身免疫的影响.
- 在接受手术的小鼠和非手术对照小鼠中,瘤生长的比较.
- 使用流细胞计,评估免疫细胞群 (巨细胞,树突细胞,MDSCs).
- 对对瘤生长的多诺西尼克-多西酸 (poly-I:C) 的术后治疗的评估.
主要成果:
- 与对照小鼠相比,手术显著加快了免疫能力强的小鼠的MYCN放大HR-NB瘤生长.
- 这种手术诱导的瘤生长加速在免疫缺陷小鼠中没有观察到,这表明免疫系统的作用.
- 手术压力导致脏巨细胞和树突细胞的减少,以及髓状细胞衍生的抑制细胞的增加.
- 在外科手术期间使用poly (I:C) 有效地改善了手术诱导的瘤生长加速.
结论:
- 手术可以促进儿童高风险神经母细胞瘤的远程瘤生长,可能是通过免疫调节.
- 观察到的免疫细胞种群的变化表明,手术后的免疫抑制微环境正在转变.
- 天生的免疫辅助剂,如聚I:C,代表了术后治疗的有希望的策略,以减轻儿科癌症中手术诱导的瘤进展.
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