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1.云南省第三人民医院疼痛科,昆明 650011
2.遵义医科大学附属第三人民医院创伤骨科,遵义 563000
阮强津,Email:ruanqiangjin@163.com,研究方向:运动系统肿瘤研究。
高 亮,Email:65575562@qq.com。
收稿:2023-12-18,
修回:2024-03-19,
录用:2024-03-28,
纸质出版:2025-08-28
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阮强津,高亮.METTL3介导m6A修饰lncRNA SNHG5对骨肉瘤MG-63细胞增殖和侵袭的影响[J].重庆医科大学学报,2025,50(8):1053-1057.
Ruan Qiangjin,Gao Liang.Effect of METTL3-mediated m6A modification of lncRNA SNHG5 on the proliferation and invasion of osteosarcoma MG-63 cells[J].Journal of Chongqing Medical University,2025,50(8):1053-1057.
阮强津,高亮.METTL3介导m6A修饰lncRNA SNHG5对骨肉瘤MG-63细胞增殖和侵袭的影响[J].重庆医科大学学报,2025,50(8):1053-1057. DOI: 10.13406/j.cnki.cyxb.003859.
Ruan Qiangjin,Gao Liang.Effect of METTL3-mediated m6A modification of lncRNA SNHG5 on the proliferation and invasion of osteosarcoma MG-63 cells[J].Journal of Chongqing Medical University,2025,50(8):1053-1057. DOI: 10.13406/j.cnki.cyxb.003859.
目的
2
探讨m
6
A甲基化转移酶3(methyltransferase 3,METTL3)在人骨肉瘤组织中的表达及其对MG-63细胞增殖和侵袭的影响。
方法
2
采用定量PCR和蛋白印迹检测METTL3在5对人骨肉瘤中的表达水平及其对下游lncRNA小核仁核糖核酸宿主基因5(small nucleolar RNA host gene 5,SNHG5)和Wnt-β-catenin信号通路的影响;甲基化RNA免疫共沉淀(methylated RNA immunoprecipitation,MeRIP)检测METTL3敲低对lncRNA SNHG5的m
6
A水平影响;CCK-8和Transwell实验检测细胞增殖和侵袭;蛋白印迹检测Wnt-β-catenin信号通路的活性变化。
结果
2
与癌旁正常组织相比,METTL3在人骨肉瘤组织中的mRNA(
P
=0.034)和蛋白水平(
P
=0.002)均可升高;敲低METTL3能减少lncRNA SNHG5的m
6
A水平(
P
=0.027)及其mRNA水平(
P
=0.002)。功能上,敲低METTL3抑制MG-63细胞的增殖(
P
=0.014)和侵袭(
P
=0.001),并抑制Wnt1,Wnt3a,Wnt10a,β-catenin和C-myc的蛋白表达水平(均
P
<
0.01),而SNHG5过表达促进细胞增殖(
P
=0.027)和侵袭(
P
=0.006),激活Wnt-β-catenin信号通路(均
P
<
0.01),并逆转METTL3敲低引起的抗肿瘤作用(均
P
<
0.01)。
结论
2
METTL3介导m
6
A修饰lncRNA SNHG5和激活Wnt-β-catenin信号促进骨肉瘤MG-63细胞增殖和侵袭的作用。
Objective
2
To investigate the expression of m
6
A methyltransferase-like protein 3(METTL3) in human osteosarcoma(OS) tissue and the effect of METTL3 on the proliferation and invasion of MG-63 cells.
Methods
2
Quantitative PCR and Western blotting were used to measure the expression level of METTL3 in 5 pairs of human OS tissue samples and investigate the effect of METTL3 on the downstream long non-coding RNA(lncRNA) small nucleolar RNA host gene 5(SNHG5) and the Wnt/β-catenin signaling pathway;methylated RNA immunoprecipitation was used to observe the effect of METTL3 knockdown on the m
6
A level of lncRNA SNHG5;CCK-8 assay and Transwell assay were used to measure cell proliferation and invasion; Western blotting was used to measure the change in the activity of the Wnt/β-catenin signaling pathway.
Results
2
Compared with the paracancerous normal tissue,human OS tissue showed significant increases in the mRNA and protein expression levels of METTL3(
P
=0.034 and 0.002),and knockdown of METTL3 reduced the m
6
A level and mRNA expression level of lncRNA SNHG5(
P
=0.027 and 0.002). Functionally,knockdown of METTL3 inhibited the proliferation and invasion of MG-63 cells(
P
=0.014 and 0.001) and the protein expression levels of Wnt1,Wnt3a,Wnt10a,β-catenin,and C-myc(all
P
<
0.01),while overexpression of SNHG5 promoted cell proliferation(
P
=0.027) and invasion(
P
=0.006),activated the Wnt/β-catenin signaling pathway(
P
<
0.01),and reversed the antitumor effect induced by METTL3 knockdown(
P
<
0.01).
Conclusion
2
METTL3-mediated m
6
A modification of lncRNA SNHG5 promotes the proliferation and invasion of MG-63 cells by activating the Wnt/β-catenin signaling.
Li HB , Huang G , Tu J , et al . METTL14-mediated epitranscriptome modification of MN1 mRNA promote tumorigenicity and all-trans-retinoic acid resistance in osteosarcoma [J ] . EBioMedicine , 2022 , 82 : 104142 .
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Zhao CP , Ling XL , Xia YX , et al . The m 6 A methyltransferase METTL3 controls epithelial-mesenchymal transition,migration and invasion of breast cancer through the MALAT1/miR-26b/HMGA2 axis [J ] . Cancer Cell Int , 2021 , 21 ( 1 ): 441 .
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Wu H , Xu HC , Jia DD , et al . METTL3-induced UCK2 m 6 A hypermethylation promotes melanoma cancer cell metastasis via the WNT/β-catenin pathway [J ] . Ann Transl Med , 2021 , 9 ( 14 ): 1155 .
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