Co-targeting of specific epigenetic regulators in combination with CDC7 potently inhibit melanoma growth

Suresh Chava1, Suresh Bugide1, Parmanand Malvi1

  • 1Department of Biochemistry and Molecular Genetics, The University of Alabama at Birmingham, Birmingham, AL 35233, USA.

Iscience
|August 9, 2022
PubMed

Insights

Targeting cell division cycle 7 (CDC7) kinase, overexpressed in melanoma, inhibits tumor growth and metastasis. Combining CDC7 inhibition with epigenetic drugs like GSK343 or OF1 enhances anti-melanoma effects.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Genetics

Background:

  • Melanoma is an aggressive skin cancer with frequent metastasis.
  • Current therapies offer limited benefit to some melanoma patients.
  • The role of cell division cycle 7 (CDC7) kinase in melanoma progression is not fully understood.

Purpose of the Study:

  • To investigate the role of CDC7 in melanoma.
  • To evaluate CDC7 inhibition as a therapeutic strategy for melanoma.
  • To identify potential combination therapies for melanoma targeting CDC7.

Main Methods:

  • Assessed CDC7 expression in melanoma patient samples.
  • Utilized a chemical genetics screen with epigenetic inhibitors (GSK343, OF1).
  • Investigated the effects of CDC7 inhibition on cell cycle, senescence, apoptosis, tumor growth, and metastasis.

Main Results:

  • CDC7 is overexpressed in melanoma, correlating with shorter patient survival.
  • CDC7 inhibition induces cell cycle arrest, senescence, and apoptosis, suppressing melanoma growth and metastasis.
  • Combination of CDC7 inhibitor XL413 with EZH2 inhibitor GSK343 or BRPF1/2/3 inhibitor OF1 demonstrated synergistic anti-melanoma effects.
  • Combined treatment upregulated tumor-suppressive genes, leading to increased apoptosis.

Conclusions:

  • CDC7 is a key driver of melanoma tumor growth and metastasis.
  • Targeting CDC7 alone or in combination with EZH2 or BRPF1/2/3 inhibitors is a promising therapeutic strategy for melanoma.

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