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由P53负面调节的APOBEC3B驱动突变促进前列腺癌的瘤进展和免疫抑制微环境

Yan Guo¹, Haodi Yu¹, Xiang Li¹

¹Department of Oncology, Henan Provincial Peoples Hospital, Zhengzhou University Peoples Hospital, Zhengzhou, 450003, Henan, China.

Molecular and cellular biochemistry

|December 12, 2025

概括

在前列腺癌 (PCa) 中,APOBEC3B (A3B) 被上调,促进瘤生长和转移. 向A3B可能为PCa患者提供一种新的治疗策略,可能改善结果.

科学领域:

在瘤学瘤学.
分子生物学分子生物学
癌症遗传学癌症遗传学

背景情况:

APOBEC3B (A3B) 是一种细胞因子去氨酶,与癌症进展有关.
目前尚不清楚A3B在前列腺癌 (PCa) 中的具体作用.
研究A3B在PCa中的功能对于确定新的治疗点至关重要.

研究的目的:

为了阐明A3B在前列腺癌中的功能意义.
评估A3B作为PCa.的潜在治疗点.
为了将A3B表达与临床参数和瘤特征相关联.

主要方法:

分析PCa组织中的A3B表达和与格里森得分和预后的相关性.
在体外测试 (CCK-8,EDU,殖民地形成,穿孔迁移/入侵) 来评估A3B对PCa细胞增殖,迁移和入侵的影响.
在小鼠体内瘤异种移植实验.
调查p53和A3B之间的监管关系.
多重复合免疫光学 (mfIHC) 和qRT-PCR用于分析与A3B表达相关的免疫细胞透.

主要成果:

在PCa组织中,A3B被显著上调,并与较高的格里森得分和较差的结局有关.
在体外,A3B促进PCa细胞的增殖,迁移和上皮-介质细胞过渡 (EMT),在体内促进瘤的生长.
p53作为A3B表达的抑制剂,减轻基因组的不稳定性.
增加的A3B表达与免疫抑制细胞 (Tregs,CD8+PD-1+T细胞,CD163+巨细胞) 的透增加相关,可能由细胞因子/化学因子介导.

结论:

A3B通过促进增殖,EMT和瘤生长,在前列腺癌的进展中发挥着重要作用.
在PCa中,A3B与免疫抑制瘤微环境有关.
A3B代表了一个有前途的预后生物标志物和前列腺癌的潜在免疫治疗点.

关键词:

APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B APOBEC3B 免疫微观环境免疫微观环境在P53中,P53是P53 前列腺癌是什么意思前列腺癌是什么意思瘤的进展情况.

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