RNA结合蛋白ZCCHC24促进了三阴性乳腺癌的瘤性
Yutaro Uchida1, Ryota Kurimoto1, Tomoki Chiba1
1Department of Systems Biomedicine, Institute of Science Tokyo, Tokyo, 113-8510, Japan.
EMBO reports
|October 17, 2024
概括
向ZCCHC24,一种RNA结合蛋白,在三阴性乳腺癌 (TNBC) 中显示出治疗潜力. 降低ZCCHC24水平可以对抗TNBC模型中的治疗耐药性和瘤生长.
科学领域:
- 分子生物学分子生物学
- 在瘤学瘤学.
- 癌症干细胞研究研究
背景情况:
- 三阴性乳腺癌 (TNBC) 是具有侵略性的,缺乏有效的治疗点.
- 癌症干细胞 (CSCs) 驱动TNBC治疗耐药性和患者的不良结果.
- 准CSC对于改善TNBC患者存活率至关重要.
研究的目的:
- 在TNBC CSC人群中确定新的治疗点.
- 研究RNA结合蛋白ZCCHC24在TNBC瘤性和治疗耐药性中的作用.
主要方法:
- 鉴定中细胞样TNBC细胞中ZCCHC24丰富的情况.
- 对ZCCHC24与mRNA cis元素 (UGUWHWWA) 的直接结合进行分析,以稳定目标基因.
- 在TNBC患者衍生异种移植 (PDX) 中使用siRNAs评估ZCCHC24的淘汰效应.
- 在TNBC PDXs中对联合ZCCHC24倒置和BET抑制剂JQ1疗法的评估.
主要成果:
- 通过稳定特定的mRNAs,ZCCHC24促进瘤性和治疗耐药性.
- ZCCHC24直接与UGUWHWWA元素结合,稳定关键基因的mRNA,包括ZEB1.1.
- 作为ZCCHC24的标,ZEB1增强了癌症干性,并相互诱导了ZCCHC24的表达.
- ZCCHC24 Knockdown 降低了中介细胞样细胞群,并在TNBC PDXs中表现出治疗效果.
- 结合ZCCHC24淘汰和JQ1治疗协同抑制了TNBC PDXs中的瘤生长.
结论:
- 通过调节CSC相关基因表达,ZCCHC24是TNBC攻击性和治疗耐药性的关键驱动因素.
- 准ZCCHC24代表了TNBC的一个有前途的治疗策略.
- 涉及ZCCHC24抑制和BET抑制剂的组合疗法可以克服TNBC中的治疗抵抗.
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