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在小鼠中,ZNF768的丧失放大了p53的作用,并减少了肺瘤的产生

Audrey Poirier^1,2, Timon Utecht¹, Romain Villot¹

¹Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ), Université Laval, Québec, QC, Canada.

|March 26, 2025

概括

指蛋白768 (ZNF768) 驱动细胞增殖并抑制瘤抑制剂p53. 在小鼠中丧失ZNF768会损害生长并抑制肺瘤的发展,这表明ZNF768是癌症点.

科学领域:

分子生物学分子生物学
细胞生物学细胞生物学
癌症研究癌症研究

背景情况:

细胞增殖对于发育和维护至关重要;它的失调会导致癌症.
指蛋白768 (ZNF768) 是一种新兴的转录因子,通过调节细胞分裂基因和抑制p53.3促进增殖.
在生理学和病理学中ZNF768的体内作用在很大程度上是未知的.

研究的目的:

在体内研究ZNF768的生理和病理作用.
描述ZNF768无鼠标模型,以了解它在生长,细胞应激反应和癌症发展中的功能.

主要方法:

对ZNF768无基因小鼠的生成和表征.
对老化和应激反应的小鼠胚胎纤维细胞 (MEF) 的隔离和分析.
在ZNF768无基因小鼠中对辐射敏感性的评估.
在KRAS驱动的癌症模型中评估ZNF768对肺瘤发生的影响.

主要成果:

ZNF768无效小鼠在生命早期表现出生长缺陷和增加的辐射敏感性.
来自ZNF768无胚胎的MEF显示p53升高,过早衰老,以及对基因毒性压力的敏感性增加.
在KRAS^G12D诱导的癌症模型中,ZNF768的损失显著抑制了肺瘤的发展,与信号,粘附和生长途径的基因表达改变有关.

结论:

ZNF768是细胞增殖的关键调节剂,具有显著的体内功能.
缺少ZNF768会导致生长障碍,对DNA损伤的敏感性增加,瘤发育减少.
ZNF768代表了减少瘤发生的潜在治疗标.

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