LncRNA USP2-AS1通过PHLDA2/PI3K/AKT轴促进结肠直肠癌的发展
Jing Zhu1, Shuhui Lin1, Lisha Chang1
1Department of Oncology, the Second Affiliated Hospital of Nanjing Medical University, 121 Jiangjiayuan Road, Nanjing, China.
长非编码RNAUSP2-AS1在结直肠癌 (CRC) 中过度表达,促进瘤生长和进展. USP2-AS1通过IGF2BP2和miR-134-5p准PHLDA2,激活PI3K/AKT通路,使其成为CRC的潜在治疗点.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 结肠直肠癌 (CRC) 是全球癌症相关死亡的主要原因.
- 长非编码RNAs (lncRNAs) 在各种癌症中发挥关键作用,包括CRC发展.
- 了解lncRNAs在CRC中的特定作用对于确定新的治疗点至关重要.
研究的目的:
- 研究结直肠癌中lncRNA USP2-AS1的表达,功能和分子机制.
- 为了确定USP2-AS1在CRC患者的预后值.
- 阐明USP2-AS1影响CRC进展的途径.
主要方法:
- 定量实时PCR用于评估CRC组织和细胞系中的USP2-AS1表达水平.
- 在体外功能测试 (细胞生长,迁移,细胞亡) 评估USP2-AS1的作用.
- 在体内瘤异种移植模型中,确认USP2-AS1对瘤生长的影响.
- RNA免疫沉 (RIP) 和双露西法酶记者测定以确定分子相互作用 (USP2-AS1,IGF2BP2,miR-134-5p,PHLDA2).
- 西方涂抹分析蛋白质表达和通路激活 (PI3K/AKT).
主要成果:
- USP2-AS1在CRC组织中显著过度表达,与患者预后不佳相关.
- 在体内,USP2-AS1的过度表达促进了CRC细胞的增殖,迁移和瘤生长,同时减少了细胞亡.
- 通过与IGF2BP2相互作用,USP2-AS1增强了PHLDA2mRNA的稳定性,并将miR-134-5p进行海绵化.
- USP2-AS1上调PHLDA2表达,导致PI3K/AKT信号通路的激活.
结论:
- USP2-AS1通过IGF2BP2/miR-134-5p轴向上调节PHLDA2的表达,在结直肠癌中起到瘤原性lncRNA的作用.
- 通过USP2-AS1激活PI3K/AKT通路,有助于CRC细胞的生长,迁移和恶性进展.
- USP2-AS1代表着结直肠癌的有前途的诊断和治疗标.
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