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在胃癌中,N6-甲基氨酸修饰的circPAK2通过向IGF2BPs/VEGFA信号来促进淋巴结转移
Ping'an Ding1,2,3, Haotian Wu1,2,3, Jiaxiang Wu1,2,3
1The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
Oncogene
|July 16, 2024
概括
这项研究确定circPAK2,一个m6A修饰的圆形RNA,是胃癌淋巴结转移的关键驱动因素. 高水平的circPAK2促进癌细胞的入侵和不良预后,这表明它是一个治疗目标.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 循环RNAs (circRNAs) 调节癌症的进展,并作为诊断/预后生物标志物.
- 胃癌淋巴结 (LN) 转移中的circRNAs机制尚未完全理解.
研究的目的:
- 调查N6-甲基氨酸 (m6A) 修饰的circRNAs在胃癌LN转移中的作用和机制.
- 确定涉及胃癌进展和转移的新型circRNAs.
主要方法:
- 在胃癌和转移性LN组织中识别和量化circPAK2表达.
- 进行了体外和体内实验,以评估circPAK2对胃癌转移,EMT,淋巴血管生成和血管生成的功能影响.
- 研究了涉及YTHDC1,IGF2BPs和VEGFA mRNA稳定性的分子机制.
- 与临床参数相关的circPAK2表达,包括LN转移和患者预后.
主要成果:
- 在胃癌和转移性LN组织中,circPAK2被显著上调.
- circPAK2的过度表达促进了胃癌细胞的迁移,入侵,EMT,淋巴血管生成,血管生成和转移在体外和体内.
- circPAK2核细胞质出口,由YTHDC1以m6A依赖的方式介导,通过与IGF2BPs的相互作用导致VEGFA mRNA稳定.
- 高 circPAK2 表达与LN转移正相关,并表明胃癌患者的预后不佳.
结论:
- m6A修饰的circPAK2是胃癌中淋巴结转移的关键调节剂.
- circPAK2通过circPAK2/IGF2BPs复合体稳定VEGFA mRNA,促进胃癌的攻击性.
- circPAK2代表了胃癌的一个有前途的治疗标和预后生物标志物.
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