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中国临床药理学与治疗学 ›› 2024, Vol. 29 ›› Issue (6): 621-628.doi: 10.12092/j.issn.1009-2501.2024.06.003

• 基础研究 • 上一篇    下一篇

蛋白激酶全抑制分析揭示 KG-1细胞增殖的分子机制

段毓1,徐凝馨2,曹琼3,杨恺1,王金娟1,刘思瑾1,贾峰峰4,刘建兵1,李莉1   

  1. 1山西医科大学基础医学院医学细胞生物与遗传学教研室,太原  030001,山西;2焦作市儿童医院,焦作  454100,河南;3太原市中心医院,太原  030009,山西;4太原技术转移促进中心,太原  030006,山西

  • 收稿日期:2023-08-31 修回日期:2023-10-07 出版日期:2024-06-26 发布日期:2024-05-20
  • 通讯作者: 李莉,女,博士研究生,教授,硕士生导师,研究方向:肿瘤分子遗传学。 E-mail: lili_5076@sxmu.edu.cn
  • 作者简介:段毓,女,硕士研究生,研究方向:分子肿瘤遗传学。 E-mail: 2210141185@qq.com 徐凝馨,女,硕士研究生,检验师,研究方向:肿瘤分子遗传学。 E-mail: minozxnx@163.com
  • 基金资助:
    山西省留学归国留学生科研资助计划(2020-076);山西省自然科学基金(自由探索类)(20210302123307);国家自然科学基金面上项目(82272622)

Comprehensive protein kinase inhibition analysis reveals the molecular mechanism of KG-1 proliferation

DUAN Yu 1, XU Ningxin 2, CAO Qiong 3, YANG Kai 1, WANG Jinjuan 1, LIU Sijin 1, JIA Fengfeng4, LIU Jianbing1, LI Li1   

  1. 1Department of Cell Biology and Genetics, School of Basic Medicine, Shanxi Medical University, Taiyuan 030001, Shanxi, China; 2Department of Medical Genetics and Prenatal Diagnosis, Maternal and Child Health Hospital of Jiaozuo City, Jiaozuo 454100, Henan, China; 3Department of Dermatology, The First Hospital of Peking University Taiyuan Hospital, Taiyuan Central Hospital, Taiyuan 030009, Shanxi, China; 4Taiyuan Technology Transfer Promotion Center, Taiyuan 030006, Shanxi, China
  • Received:2023-08-31 Revised:2023-10-07 Online:2024-06-26 Published:2024-05-20

摘要:

目的:通过分析KG-1细胞对各种蛋白激酶抑制剂的反应,探讨其增殖的分子机制。方法:采用CCK-8法、实时荧光定量PCR(qRT-PCR)和Western-blot检测各种蛋白激酶抑制剂对KG-1细胞增殖、相关基因mRNA表达水平以及FGFR1下游信号通路蛋白磷酸化水平的影响。结果:NVP-BGJ398和PD173074有效抑制KG-1细胞的增殖,表明FGFR及其下游信号通路在KG-1细胞增殖过程中具有关键作用。使用FGFR抑制剂处理后,p-FGFR1和p-STAT5水平显著下降(P<0.001),p-Akt水平稍有下降(P<0.05),并未影响p-ERK水平(P>0.05)。结论:FGFR1OP2-FGFR1主要作用于下游STAT5信号通路,以促进细胞增殖。蛋白激酶全抑制分析是一种可靠而直接的方法,可用于确定癌细胞增殖的分子机制。

关键词: KG-1细胞, 蛋白激酶抑制剂, FGFR1OP2-FGFR1融合基因, STAT5

Abstract:

AIM: To investigate the molecular mechanisms of KG-1 cell proliferation by profiling its responses to various protein kinase inhibitors. METHODS: CCK-8 assay, real time quantitative PCR (qRT-PCR) and Western-blot were used to detect the effect of various protein kinase inhibitors on KG-1 cell proliferation, the expression levels of mRNA and phosphorylation level of signaling proteins in the FGFR1 downstream pathways. RESULTS: NVP-BGJ398 and PD173074 effectively inhibited the proliferation of KG-1 cells, indicative of a crucial role of FGFR downstream signaling. After treatment with FGFR inhibitors, the levels of p-FGFR1OP2-FGFR1 and p-STAT5 decreased significantly (P<0.001), p-AKT decreased slightly (P<0.05), without affecting the p-ERK level (P>0.05). CONCLUSION: FGFR1OP2-FGFR1 mainly acts on the downstream STAT5 signaling pathway to promote cell proliferation. Comprehensive protein kinase inhibition analysis is a reliable and direct approach to identify functional drivers of cancer cell proliferation.

Key words: KG-1 cell line, protein kinase inhibitors, FGFR1OP2-FGFR1 fusion gene, STAT5

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