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小檗碱通过下调METTL3表达抑制肾癌细胞侵袭和迁移的机制 Δ
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杨天宇 ,帅立雄,许竞泽,程馨阳,许志明,张永胜(苏州大学附属第二医院病理科,江苏 苏州 215004)
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中图分类号 R965 文献标志码 A 文章编号 1001-0408(2023)15-1863-06
DOI 10.6039/j.issn.1001-0408.2023.15.14
摘 要 目的 探讨小檗碱(BER)对人肾癌细胞侵袭、迁移的抑制作用及可能机制。方法 以人肾癌OSRC-2细胞为对象进行实
验。采用alamarBlue法测定0(对照组)、25、50、75、100、125、150、175、200 μmol/L BER作用24、48 h后对OSRC-2细胞增殖的抑制
作用。用0(对照组)、50、100 μmol/L BER作用于细胞48 h后,通过流式细胞术分析BER对细胞周期的影响;通过细胞划痕实验观
察24、36 h时各组细胞的迁移能力;通过Transwell实验观察作用24 h时各组细胞的侵袭能力;并通过Western blot法检测上述药物
作用48 h后细胞中甲基转移酶样蛋白3(METTL3)的蛋白表达,通过RNA甲基化定量试剂盒检测各组细胞内RNA的N6-甲基腺
嘌呤(m6A)水平。结果 与对照组比较,不同浓度BER均可显著升高OSRC-2细胞的增殖抑制率(P<0.01),并呈时间和浓度依赖
性趋势;50、100 μmol/L BER作用48 h后可将细胞周期阻滞在G0/G1期(P<0.01);50、100 μmol/L BER组细胞的迁移、侵袭能力均
显著降低(P<0.05或P<0.01),细胞中METTL3蛋白的表达水平和RNA的m6A水平均显著降低(P<0.01)。结论 BER可通过下
调METTL3的表达,进而抑制m6A水平,从而抑制人肾癌细胞的侵袭、迁移。
关键词 小檗碱;人肾癌OSRC-2细胞;迁移;侵袭;甲基转移酶样蛋白3;N6-甲基腺嘌呤
Mechanism of berberine inhibiting invasion and migration of renal carcinoma cells by down-regulating the
expression of METTL3
YANG Tianyu,SHUAI Lixiong,XU Jingze,CHENG Xinyang,XU Zhiming,ZHANG Yongsheng(Dept. of
Pathology, the Second Affiliated Hospital of Soochow University, Jiangsu Suzhou 215004, China)
ABSTRACT OBJECTIVE To investigate the inhibitory effect of berberine (BER) on the invasion and migration of human renal
carcinoma cells and its potential mechanism. METHODS Using human renal carcinoma OSRC-2 cell as object, alamarBlue assay
was adopted to detect the inhibitory effects of 0 (control group), 25, 50, 75, 100, 125, 150, 175 and 200 μmol/L BER on the
proliferation of OSRC-2 cell after treatment for 24 h and 48 h. After treated with 0(control group), 50, 100 μmol/L BER for 48 h,
the effect of BER on cell cycle was analyzed by flow cytometry. The migration of OSRC-2 cells in 24 h and 36 h was observed by
cell scratch test, and the invasion ability of OSRC-2 cells in 24 h was detected by Transwell assay. The protein expression of
methyltransferase-like 3 (METTL3) was detected by Western blot after treatment for 48 h, and RNA methylation quantification kit
was used to detect the levels of N6-methyladenosine (m6A) in OSRC-2 cells. RESULTS Compared with control group, BER at
different concentrations could significantly decrease the survival rate of OSRC-2 cells (P<0.01), and showed a dose-dependent and
time-dependent manner. After 48 h of BER treatment at 50, 100 μmol/L, the cell was arrested in G0/G1 phase (P<0.01).
Compared with control group, the migration and invasion abilities of cells in 50, 100 μmol/L BER group were significantly
decreased (P<0.05 or P<0.01); the protein expression of METTL3 and the level of m6A in RNA were significantly decreased
(P<0.01). CONCLUSIONS BER can inhibit level of m6A by down-regulating the expression of METTL3, thereby inhibiting the
invasion and metastasis of human renal carcinoma cells.
KEYWORDS berberine; human renal carcinoma OSRC-2 cell; migration; invasion; methyltransferase-like 3; N6-
methyladenosine
肾细胞癌(renal cell carcinoma,RCC)是泌尿系统常
Δ 基金项目 苏州市科技发展项目(No.SYS2020146);苏州市医学
见的恶性肿瘤,约25%的患者最初即被诊断为晚期或转
重点扶持学科(No.SZFCXK202137)
*第一作者 住院医师,硕士。研究方向:肿瘤病理学。电话: 移 性 RCC。 即 使 有 手 术 切 除 史 的 RCC 患 者 ,也 有
0512-67783457。E-mail:445999886@qq.com
20%~40%会发生转移性RCC,而细胞因子治疗和分子
# 通信作者 主任医师,硕士生导师。研究方向:肿瘤病理学。电
[1]
话:0512-67783457。E-mail:shengyongzh@126.com 靶向治疗的效果有限 。中药抗肿瘤作用及机制一直是
中国药房 2023年第34卷第15期 China Pharmacy 2023 Vol. 34 No. 15 · 1863 ·