MELK is an oncogenic kinase essential for metastasis, mitotic progression, and programmed death in lung carcinoma.

MELK is an oncogenic kinase essential for metastasis, mitotic progression, and programmed death in lung carcinoma.
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MELK 是一种致癌激酶,对于肺癌的转移、有丝分裂进展和程序性死亡至关重要

DOI:
10.1038/s41392-020-00288-3
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发表时间:
2020-12-02
影响因子:
39.3
通讯作者:
Du G
Du G
中科院分区:
医学1区
文献类型:
--
作者:
Tang Q;Li W;Zheng X;Ren L;Liu J;Li S;Wang J;Du G

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肺癌是近十年来发病率和死亡率增长最快的癌症,并且仍然难以治疗。此外,其发展的分子机制仍不清楚。本研究生物信息学分析显示MELK在肺癌中高表达,且与肺腺癌(LUAD)的生存呈负相关。 LUAD 患者组织的免疫组织化学分析显示 LUAD 中存在高水平的 MELK 表达。 MELK 表达的敲低会抑制 LUAD 细胞的迁移和侵袭,这可能是由 Twist1、Slug、MMP7 和 N-catenin 介导的。 MELK 的过度表达促进了 LUAD 细胞在培养基、3D Matrigel 和裸鼠中的生长。 OTSSP167 对 MELK 的抑制通过 PLK1-CDC25C-CDK1 途径使 LUAD 细胞周期停滞在 G2/M 期,并引发细胞凋亡介导的细胞焦亡。总之,这些数据表明 MELK 对于 LUAD 的转移、有丝分裂进展和程序性死亡至关重要,并且可能是 LUAD 的一个有前途的治疗靶点。
Lung cancer is the fastest growth rate of morbidity and mortality in nearly a decade, and remains difficult to treat. Furthermore, the molecular mechanisms underlying its development are still unclear. In this study, bioinformatics analysis showed that MELK was highly expressed in lung cancer and negatively correlated to the survival of lung adenocarcinoma (LUAD). Immunohistochemistry analysis of LUAD patient tissues revealed there were a high level of MELK expression in LUAD. Knockdown of MELK expression inhibits the migration and invasion of LUAD cells, which may be mediated by Twist1, Slug, MMP7, and N-catenin. Overexpression of MELK promoted the growth of LUAD cells in medium, 3D Matrigel, and nude mice. Inhibition of MELK by OTSSP167 arrested cycle of LUAD cells at G2/M phase via PLK1-CDC25C-CDK1 pathway, and triggered apoptosis-mediated pyroptosis. Together, these data indicate that MELK is critical for metastasis, mitotic progression, and programmed death of LUAD and may be a promising therapeutic target for LUAD.
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