一种由circIMP3编码的新型蛋白质通过调节替代拼接和瘤微环境来促进前列腺癌的进展
Wenren Zuo1, Weizhou Huang1, Haojie Chen2
1Department of urology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.
Frontiers in cell and developmental biology
|January 21, 2026
概括
循环RNA circIMP3通过调节替代拼接和膜信号来促进前列腺癌 (PC) 的生长. 升高的circIMP3水平与预后不佳相关,可以作为PC的液体活检生物标志物.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 在RNA生物学,RNA生物学.
背景情况:
- 在全球范围内,前列腺癌 (PC) 发病率和死亡率正在上升.
- 目前对晚期PC的治疗方法有限,这凸显了对新型治疗点的需求.
- 替代拼接 (AS) 和非编码RNA越来越多地被认为是它们在癌症进展中的作用.
研究的目的:
- 为了研究circIMP3的作用,一个来自IMP3基因的圆形RNA,在前列腺癌的发展中.
- 阐明circIMP3影响瘤进展的分子机制.
- 评估circIMP3作为PC的潜在诊断和预后生物标志物.
主要方法:
- 定量PCR,RNA测序和免疫阻塞用于识别和表征circIMP3.
- 功能性测试 (细胞增殖,体内瘤性) 来评估circIMP3的生物作用.
- RNA免疫沉降测序 (RIP-seq) 和外基因组隔离/吸收试验,以探索机制和近信号传递.
主要成果:
- 在PC组织和患者血液中,CircIMP3的高调显著.
- CircIMP3编码了一种促进细胞增殖和瘤生长的蛋白质 (circIMP3_288aa).
- CircIMP3调节FBXW7的替代拼接,稳定c-Myc并增强致癌信号传递.
- 通过外体分泌CircIMP3,在瘤微环境 (TME) 中调解膜信号.
结论:
- 在PC中,CircIMP3是细胞内AS和细胞外帕克林信号的关键调节者.
- 涉及FBXW7/c-Myc的CircIMP3机制提供了对PC瘤发生的洞察力.
- 高 circIMP3 表达与较差的患者存活率有关,表明其作为预后生物标志物的潜力.
- 周围血液中CircIMP3的存在表明在PC诊断和监测的液体活检中具有实用性.
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