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南京医科大学学报(自然科学版)                                 第45卷第11期
               ·1546 ·                    Journal of Nanjing Medical University(Natural Sciences)  2025年11月


             ·专题研究:肿瘤·

              METTL3 介导的 KIF11 mRNA m6A 修饰通过 PI3K/AKT 信号通

              路促进结直肠癌进展



              林书慧,钱萌森,朱          静,丁 洁,罗 茜,李           杰,李    娟,王     娟,王科明    *

              南京医科大学第二附属医院肿瘤科,江苏 南京                  210029



             [摘    要] 目的:探讨驱动蛋白家族成员11(kinesin family member 11,KIF11)在结直肠癌(colorectal cancer,CRC)中的生物学
              功能及其分子调控机制。方法:采用定量实时PCR技术结合公共数据库分析KIF11在CRC中的表达情况。通过CCK⁃8细胞增
              殖实验、集落形成实验、EdU 染色实验和 Transwell 迁移实验评估 KIF11 对 CRC 细胞增殖和迁移能力的影响。运用 Western
              blot、RNA免疫共沉淀定量PCR(RIP⁃qPCR)、甲基化RNA免疫共沉淀定量PCR(MeRIP⁃qPCR)和RNA稳定性实验解析KIF11的
              N6⁃甲基腺苷(N6⁃methyladenosine,m6A)修饰机制。采用 RNA 测序技术和相关性分析方法探究 KIF11 调控的下游机制。结
              果:KIF11在CRC组织中高表达,其表达水平与CRC细胞的增殖和迁移能力呈正相关。甲基转移酶样蛋白3(methyltransferase⁃
              like 3,METTL3)和胰岛素样生长因子 2 mRNA 结合蛋白 2(insulin like growth factor 2 mRNA binding protein 2,IGF2BP2)通过
              m6A修饰调控KIF11 mRNA的稳定性,从而正向调控KIF11的表达。进一步研究发现,KIF11通过激活PROM1/PI3K/AKT通路
              促进CRC的恶性进展。结论:METTL3/IGF2BP2介导的KIF11 mRNA m6A修饰通过PI3K/AKT信号通路促进CRC的发生发展,
              提示KIF11可能作为CRC潜在的预后标志物和治疗靶点。
             [关键词] 结直肠癌;KIF11;m6A;METTL3;PI3K/AKT 信号通路
             [中图分类号] R735.34                   [文献标志码] A                     [文章编号] 1007⁃4368(2025)11⁃1546⁃17
              doi:10.7655/NYDXBNSN250235


              METTL3 ⁃ mediated m6A modification of KIF11 mRNA promotes colorectal cancer

              progression through the PI3K/AKT signaling pathway
              LIN Shuhui,QIAN Mengsen,ZHU Jing,DING Jie,LUO Qian,LI Jie,LI Juan,WANG Juan,WANG Keming  *
              Department of Oncology,the Second Affiliated Hospital of Nanjing Medical University,Nanjing 210029,China


             [Abstract] Objective:To investigate the biological functions and molecular regulatory mechanisms of kinesin family member 11
             (KIF11)in colorectal cancer(CRC). Methods:The expression of KIF11 in CRC was examined by qRT⁃PCR and public databases.
              Functional assays(CCK ⁃ 8,colony formation,EdU,and Transwell)were employed to evaluate KIF11’s roles in CRC progression.
              Western blot,RIP ⁃ qPCR,MeRIP ⁃ qPCR,and RNA stability assays were performed to elucidate the molecular mechanism of N6 ⁃
              methyladenosine(m6A)modification for KIF11. RNA sequencing(RNA ⁃ seq)and correlation analysis were used to examine the
              downstream mechanism of KIF11 regulation. Results:KIF11 was highly expressed in CRC and promoted CRC proliferation and
              migration. Mechanistically,methyltransferase ⁃ like 3(METTL3)/insulin like growth factor 2 mRNA binding protein 2(IGF2BP2)
              enhanced KIF11 mRNA stability and expression in an m6A⁃dependent way. Furthermore,by means of the PROM1/PI3K/AKT pathway,
              KIF11 facilitated the progression of CRC. Conclusion:The m6A modification of KIF11 by METTL3/IGF2BP2 contributes to CRC
              progression via the PI3K/AKT signaling pathway,highlighting its potential as a prognostic biomarker and therapeutic target.
             [Key words] colorectal cancer;KIF11;m6A;METTL3;PI3K/AKT pathway
                                                                          [J Nanjing Med Univ,2025,45(11):1546⁃1562]




             [基 金 项 目] 江 苏 省 卫 生 健 康 委 员 会 医 学 科 研 重 点 项 目(K2023024);789 Outstanding Talent Program of SAHNMU
             (789ZYRC202090147)
              通信作者(Corresponding author),E⁃mail:Kemingwang@njmu.edu.cn(ORCID:0000⁃0002⁃1358⁃3562)
              ∗
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