Nat Commun:IL-33促进肿瘤微环境的建立并加速胶质瘤的发生发展

2020-10-13 xiaozeng MedSci原创

胶质母细胞瘤(GBM)是一种高级别神经胶质瘤,尽管目前对于该疾病相关基因组突变情况有了更深入的分子机制研究,但患者的中位总生存期仍仅为14.6个月。

胶质母细胞瘤(GBM)是一种高级别神经胶质瘤,尽管目前对于该疾病相关基因组突变情况有了更深入的分子机制研究,但患者的中位总生存期仍仅为14.6个月。

尽管最大范围手术切除(maximal surgical resection)结合放疗,并同时辅以替莫唑胺(temozolomide)进行辅助化疗的策略在GBM的治疗中取得了一定的进展,但患者的长期存活率还是偏低,其2年和5年的存活率分别维持在25%和10%。

核IL-33是肿瘤生长和巨噬细胞浸润所必需的

既往研究显示,巨噬细胞和小胶质细胞的存在会影响胶质母细胞瘤的发生发展并阻止患者产生持久的免疫反应。该研究发现,具有双重功能的细胞因子IL-33能够作为胶质母细胞瘤微环境的调节因子,并促进肿瘤的发生发展。

IL-33+胶质瘤与免疫细胞的招募相关

研究人员发现,在大部分的人类神经胶质瘤样本和小鼠模型中,IL-33的表达水平与肿瘤相关的巨噬细胞/单核细胞/小胶质细胞的增多息息相关。此外,核定位和分泌型的IL-33能够调控一些趋化因子,这些趋化因子通过协同招募并激活固有免疫细胞,促进促肿瘤微环境的形成。相反的,核IL-33的缺失会削弱该招募作用,并显著抑制神经胶质瘤的生长,最终提高患者的生存率。


综上,该研究结果揭示了免疫细胞被募集和激活的一个范例,其也为该疾病的治疗提供一种潜在的策略,即将治疗重点不仅放在单独的癌细胞上,也要包括正常的宿主环境。


原始出处:

De Boeck, A., Ahn, B.Y., D’Mello, C. et al. Glioma-derived IL-33 orchestrates an inflammatory brain tumor microenvironment that accelerates glioma progression. Nat Commun 11, 4997 (05 October 2020).

 

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    2020-10-18 liuli5079
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    2021-01-31 liye789132251
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    2020-10-15 宋威
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    2020-10-14 lovetcm

    #胶质瘤#成为肿瘤新的高地了。目前在#肿瘤免疫治疗#背景下,肝癌,胰腺癌这些癌王都发生了重大改变!但是,卵巢癌,胶质瘤似乎仍然没有任何迹象改变。这些无法治疗的肿瘤可能成为新一代癌王了。

    0

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肿瘤微环境与肿瘤的发生、进展和预后高度相关。本研究旨在探究低级胶质瘤(LGG)肿瘤微环境中免疫相关基因(IRG)的表达和免疫浸润模式。

J Exp Med :吕建新/吕志民团队合作揭示胶质瘤母细胞免疫逃逸新机制

胶质母细胞瘤是一类常见的原发性恶性脑肿瘤。由于这类肿瘤恶性程度极高,所以绝大部分的患者预后极差:胶质母细胞瘤患者经过手术放化疗等治疗手段后,其生存中位数仅为14个月左右,五年生存率仍不到5%。

甘李药业CDK4/6抑制剂获FDA孤儿药资格,治疗恶性胶质瘤

9月10日,甘李药业宣布FDA授予其细胞周期蛋白依赖性激酶 4/6(CDK4/6)抑制剂GLR2007孤儿药资格,用于治疗包括胶质母细胞瘤(GBM)在内的恶性胶质瘤。

中国将肿瘤电场治疗纳入标准方案 国际前沿创新疗法造福胶质母细胞瘤患者

胶质母细胞瘤是最常见的原发性恶性中枢神经系统肿瘤,被认为是神经外科治疗中最棘手的难治性肿瘤之一。手术加上放疗和化疗一直是该疾病的传统治疗方案。