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1.苏州高新区人民医院消化内科,苏州 215129
2.上海交通大学医学院附属第六人民医院消化内科,上海 200233
陆雯雯,Email:714756027@qq.com,研究方向:消化系统肿瘤研究。
张 靖,Email:jing5522724@vip.163.com。
收稿:2023-12-18,
修回:2024-02-25,
录用:2024-03-28,
纸质出版:2025-08-28
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陆雯雯,周海霞,庄剑波,等.hnRNPA2B1介导m6A修饰MIR100HG促进胃癌MKN-28细胞增殖和侵袭作用[J].重庆医科大学学报,2025,50(8):1078-1083.
Lu Wenwen,Zhou Haixia,Zhuang Jianbo,et al.Effect of hnRNPA2B1-mediated m6A modification of MIR100HG in promoting the proliferation and invasion of gastric cancer MKN-28 cells[J].Journal of Chongqing Medical University,2025,50(8):1078-1083.
陆雯雯,周海霞,庄剑波,等.hnRNPA2B1介导m6A修饰MIR100HG促进胃癌MKN-28细胞增殖和侵袭作用[J].重庆医科大学学报,2025,50(8):1078-1083. DOI: 10.13406/j.cnki.cyxb.003892.
Lu Wenwen,Zhou Haixia,Zhuang Jianbo,et al.Effect of hnRNPA2B1-mediated m6A modification of MIR100HG in promoting the proliferation and invasion of gastric cancer MKN-28 cells[J].Journal of Chongqing Medical University,2025,50(8):1078-1083. DOI: 10.13406/j.cnki.cyxb.003892.
目的
2
探讨N
6
-甲基腺苷(N
6
-methyladenosine,m
6
A)阅读子异质核糖核蛋白A2/B1(heterogeneous nuclear ribonucleoprotein A2/B1,hnRNPA2B1)在人胃癌组织中的表达及其对人胃癌细胞系MKN-28(human gastric carinoma cell line MKN-28,MKN-28)增殖和侵袭的影响。
方法
2
利用癌症基因组图谱(the cancer genome atlas,TCGA)和基因表达数据集(gene expression omnibus,GEO)分析h
nRNPA2B1和长链非编码RNA(long non-coding RNA,lncRNA)miR-100-let-7a-2-miR-125b-1簇宿主基因(miR-100-let-7a-2-miR-125b-1 cluster host gene,MIR100HG)在胃癌组织的表达及其与患者临床生存预后的关系。实时荧光定量PCR(quantitative real-time PCR,qPCR)和蛋白质印迹法(Western blot)检测hnRNPA2B1对MIR100HG表达水平及其下游Wnt/β-连环蛋白信号通路(Wnt/β-catenin signaling pathway,Wnt/β-catenin)的影响;甲基化RNA免疫共沉淀(methylated RNA immunoprecipitation,MeRIP)检测MIR100HG的m
6
A水平;细胞计数试剂盒-8(cell counting kit-8,CCK-8)和Transwell小室实验检测细胞增殖和侵袭。
结果
2
与癌旁组织相比,hnRNPA2B1和MIR100HG在人胃癌组织的表达均升高(
t
=6.101,
P
<
0.001;
t
=2.191,
P
=0.037),且其高表达与胃癌患者预后不良显著相关。敲低hnRNPA2B1减少MIR100HG的mRNA表达水平(
t
=5.156,
P
=0.007)及其m
6
A水平(
t
=4.789,
P
=0.010)。敲低hnRNPA2B1抑制MKN-28细胞的增殖(
t
=4.915,
P
=0.008)和侵袭(
t
=5.167,
P
=0.007),并阻断Wnt/β-catenin信号通路的活性(均
P
<
0.05);而过表达MIR100HG促进细胞增殖(
t
=3.578,
P
=0.023)和侵袭(
t
=8.411,
P
=0.001),激活Wnt/β-catenin信号通路(均
P
<
0.01),并逆转hnRNPA2B1敲低引起的抗肿瘤作用(
t
=3.667,
P
=0.021)。
结论
2
hnRNPA2B1介导m
6
A修饰MIR100HG和激活Wnt/β-catenin信号通路促进胃癌MKN-28细胞增殖和侵袭的作用。
Objective
2
To investigate the expression of N
6
-methyladenosine(m
6
A) reader heterogeneous nuclear ribonucleoprotein A2/B1(hnRNPA2B1) in human gastric cancer(GC) tissue and its effect on the proliferation and invasion of MKN-28 cells.
Methods
2
The Cancer Genome Atlas and Gene Expression Omnibus were used to analyze the expression of hnRNPA2B1 and long noncoding RNA(lncRNA) mir-100-let-7a-2-mir-125b-1 cluster host gene(MIR100HG) in GC tissue and their association with the clinical prognosis of patients with GC. Quantitative PCR and Western blotting wer
e used to measure the effect of hnRNPA2B1 on the expression level of MIR100HG and its downstream Wnt/β-catenin signaling pathway; Methylated RNA immunoprecipitation(MeRIP) was used to measure the m
6
A level of MIR100HG;CCK-8 assay and Transwell assay were used to observe cell proliferation and invasion.
Results
2
Compared with paracancerous tissue,human GC tissue showed significant increases in the expression levels of hnRNPA2B1(
t
=6.101,
P
<
0.001) and MIR100HG(
t
=2.191,
P
=0.036 7),and the high expression levels of hnRNPA2B1 and MIR100HG were associated with poor survival in patients with GC. Knockdown of hnRNPA2B1 reduced the mRNA expression level(
t
=5.156,
P
=0.007) and m
6
A level of MIR100HG(
t
=4.789,
P
=0.010),inhibited the proliferation and invasion of MKN-28 cells(
t
=4.915,
P
=0.008 and
t
=5.167,
P
=0.007),and blocked the activity of the Wnt/β-catenin signaling pathway(
P
<
0.05). Overexpression of MIR100HG promoted cell proliferation and invasion(
t
=3.578,
P
=0.023 and
t
=8.411,
P
=0.001),activated the Wnt/β-catenin signaling pathway(
P
<
0.01),and reversed the antitumor effect induced by hnRNPA2B1 knockdown(
t
=3.667,
P
=0.021).
Conclusion
2
This study shows that hnRNPA2B1-mediated m6A modification of MIR100HG promotes the proliferation and invasion of GC MKN-28 cells by activating the Wnt/β-catenin signaling pathway.
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