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MELK is an oncogenic kinase essential for early hepatocellular carcinoma recurrence

Hongping Xia1, Shik Nie Kong2, Jianxiang Chen2

  • 1Bek Chai Heah Laboratory of Cancer Genomics, Humphrey Oei Institute of Cancer Research, Singapore; Cancer and Stem Cell Biology Program, Duke-NUS Medical School, Singapore.

Cancer Letters
|October 4, 2016
PubMed

Insights

Maternal Embryonic Leucine Zipper Kinase (MELK) is overexpressed in hepatocellular carcinoma (HCC), driving cancer growth and recurrence. Inhibiting MELK shows promise as a therapeutic strategy for advanced HCC.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Hepatocellular carcinoma (HCC) is a leading cause of cancer mortality globally.
  • Kinase deregulation is a key mechanism in oncogenesis and cancer cell survival.
  • Gene expression analysis in HCC revealed several overexpressed kinases.

Purpose of the Study:

  • To investigate the role of Maternal Embryonic Leucine Zipper Kinase (MELK) in HCC pathogenesis.
  • To determine the correlation between MELK overexpression and clinical outcomes in HCC patients.
  • To evaluate MELK as a potential therapeutic target for advanced HCC.

Main Methods:

  • Gene expression profiling of HCC samples.
  • In vitro studies involving MELK silencing in HCC cells.
  • Correlation analysis between MELK expression and cell cycle/mitosis genes.

Main Results:

  • MELK is significantly overexpressed in HCC, correlating with poor survival and early recurrence.
  • Silencing MELK inhibits HCC cell growth, invasion, stemness, and tumorigenicity via apoptosis and mitosis induction.
  • MELK overexpression correlates with cell cycle and mitosis genes regulated by the FoxM1 pathway.

Conclusions:

  • MELK is an oncogenic kinase critical for HCC development and recurrence.
  • Targeting MELK presents a promising therapeutic strategy for advanced HCC.
  • MELK's role in the FoxM1-driven cell division program highlights its significance in HCC pathogenesis.
Keywords:
FOXM1Hepatocellular carcinomaMELKOncogenic kinaseRecurrence

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