该LIN28B-let-7-PBK通路对于3组髓母细胞瘤瘤的生长和生存至关重要
Shubin W Shahab1,2, Christianna M Roggeveen2, Jiarong Sun3
1Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, GA, USA.
Molecular oncology
|June 21, 2023
概括
针对LIN28B通路,对于第三组脑髓母细胞瘤 (G3 MB) 的生长至关重要,显示出有前途. 在临床前模型中,抑制LIN28B或PBK显著降低了G3 MB细胞增殖和瘤生长.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 发育生物学 发展生物学
背景情况:
- 第三组髓母细胞瘤 (G3 MB) 预后不好,目标治疗选择有限.
- 在G3 MB中,LIN28B同源B (LIN28B) 被上调,并与患者存活率降低有关.
- 在G3 MB进展中LIN28B途径的作用需要进一步研究.
研究的目的:
- 调查LIN28B-Lethal-7 (let-7) -lymphokine激活的杀手T细胞起源蛋白激酶 (PBK) 轴在G3 MB中的作用.
- 评估在G3 MB中准这种途径的治疗潜力.
主要方法:
- 在患者衍生的G3 MB细胞系中,LIN28B被淘汰.
- 在体外和体内实验中使用正位体G3 MB小鼠模型进行实验.
- 使用LIN28B抑制剂 (1632) 和PBK抑制剂 (HI-TOPK-032) 的治疗.
主要成果:
- LIN28B 敲除显著降低了 G3 MB 细胞活力,增殖,并延长了小鼠的存活时间.
- 在异种移植模型中,LIN28B抑制剂1632有效降低了G3 MB细胞生长和瘤负担.
- 使用HI-TOPK-032抑制PBK也导致G3 MB细胞活力和增殖的显著减少.
结论:
- 这条LIN28B-let-7-PBK通路对于G3MB的扩散至关重要.
- 向LIN28B或PBK显示了对G3 MB治疗的前临床疗效有希望.
- 这一途径代表了G3 MB的潜在治疗点.
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