NF-κB和FOSL1的相互作用驱动着质瘤干的发生
Vanajothi Ramar1, Shanchun Guo2, Breanna Hudson1
1Department of Microbiology, Biochemistry & Immunology, Morehouse School of Medicine, Atlanta, USA.
FOSL1和NF-κB信号相互调节质母细胞瘤的干和生长. 这一途径突出了FOSL1作为质母细胞瘤多形 (GBM),一种常见的脑瘤的潜在治疗点.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 神经科学是一个神经科学.
背景情况:
- 多形质母细胞瘤 (GBM) 是一种具有侵略性的脑瘤,其特征是复发,通常归因于质母细胞瘤干细胞 (GSCs).
- 以前被确定为致瘤基因的FOSL1基因,也是质瘤中潜在的药物标,由STAT3.3转换活化.
- 已知STAT3和NF-κB信号通路在各种癌症中合作,这表明NF-κB和FOSL1在质生成中的潜在联系.
研究的目的:
- 研究质瘤中由FOSL1调节的下游分子.
- 确定NF-κB信号是否通过转录调节FOSL1并导致质瘤的发展.
- 探索FOSL1和NF-κB信号在质瘤茎和瘤发生中的相互调节关系.
主要方法:
- 在PDX-L14细胞系中FOSL1过度表达后转录组分析.
- 在质瘤患者组织微阵列 (TMA) 中对FOSL1和NF-κB p65进行免疫组织化学染色.
- 路西法酶记者测定使用野生类型和突变的FOSL1促进体来评估NF-κB结合.
- 调节FOSL1和NF-κB表达以研究它们的相互调节和对细胞增殖,细胞循环,细胞亡和GSC标记物的影响 (ALDH1,CD133).
主要成果:
- FOSL1调节NF-κB信号通路,NF-κB p65蛋白表达与质瘤患者的FOSL1表达相关,两者都与瘤等级有关.
- 在质瘤细胞中,NF-κB充当FOSL1促进体的关键转录因子.
- NF-κB和FOSL1之间的相互调节促进G1/S细胞周期过渡并抑制细胞亡,从而增强质瘤干和瘤发生.
结论:
- FOSL1分子通路与NF-κB激活有功能联系.
- 这种相互作用增强了质母细胞瘤的干度,并有助于瘤的生长和进展.
- FOSL1代表了多种质母细胞瘤的潜在新疗法标.
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