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ΔNp63 调节人类头部和部状癌细胞中的放射电阻

Kota Sato¹, Hironori Yoshino¹, Yoshiaki Sato¹

¹Department of Radiation Science, Graduate School of Health Sciences, Hirosaki University, Hirosaki 036-8564, Aomori, Japan.

Current issues in molecular biology

|August 25, 2023

概括

转录因子 ΔNp63 通过促进核运输,促进头角状细胞癌 (HNSCC) 的放射电阻. 抑制kariopherin-β1 (KPNB1) 降低了ΔNp63水平,提高了对HNSCC的辐射疗法的有效性.

科学领域:

在瘤学瘤学.
分子生物学分子生物学
放射治疗研究放射治疗研究

背景情况:

头部和部状细胞癌 (HNSCC) 的复发通常是由于耐辐射的癌细胞.
卡里奥费林-β1 (KPNB1) 抑制增强了HNSCC中辐射诱导的细胞毒性.
抑制KPNB1降低了转录因子ΔNp63.3的核定位.

研究的目的:

调查 ΔNp63 在 HNSCC 电阻中的作用.
为了确定 ΔNp63 是一个携带 KPNB1 的核蛋白,参与 HNSCC 的放射电阻.
为了识别参与核ΔNp63表达的卡里奥菲林-α (KPNA) 分子.

主要方法:

用殖民地形成试验评估细胞存活率.
通过附录V染色和切割caspase-3表达来评估亡.
分析了核 ΔNp63 蛋白质表达,以确定相互作用的 KPNA 分子.

主要成果:

Np63倒置显著降低了辐射后的HNSCC细胞存活率.
敲除 ΔNp63 增加了辐射诱导的亡,由增加的附件 V+ 细胞和分裂的 caspase-3 细胞证明.
卡里奥费林-α1 (KPNA1) 参与了 ΔNp63.3 的核运输.

结论:

ΔNp63在HNSCC细胞的放射电阻中起着至关重要的作用.
ΔNp63作为KPNB1携带的核蛋白,在HNSCC中调节放射电阻.
准KPNB1/ΔNp63通路,可能涉及KPNA1,可以提高HNSCC放射治疗结果.

关键词:

头部和部状细胞癌瘤电离辐射辐射的电离辐射.卡里奥菲林-α 的使用.卡里奥菲林-β1 的使用.辐射诱导的亡是辐射诱导的亡无线电电阻的使用方法的 ΔNp63 的值.

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