[Function of CDK12 in Tumor initiation and progression and its clinical consequences]

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D Vrábel, M Svoboda, J Navrátil

    Klinicka Onkologie : Casopis Ceske a Slovenske Onkologicke Spolecnosti
    |October 15, 2014
    PubMed

    Insights

    Cyclin-dependent kinase 12 (CDK12) regulates DNA-damage response genes crucial for cancer. CDK12 mutations sensitize tumors to DNA-damaging therapies, highlighting its therapeutic potential.

    Area of Science:

    • Molecular Biology
    • Genetics
    • Oncology

    Context:

    • Cyclin-dependent kinases (CDKs) are vital for cell cycle and transcription.
    • CDK12 specifically regulates genes involved in the DNA-damage response pathway, including BRCA1, ATM, ATR, FANCI, and FANCD2.
    • Dysregulation of these genes contributes to genomic instability and cancer development.

    Purpose:

    • To review recent findings on CDK12 function in cancer.
    • To discuss the implications of CDK12 mutations in tumor development and sensitivity to therapies.
    • To explore the potential of CDK12 as a therapeutic target.

    Summary:

    • CDK12 plays a critical role in maintaining genomic stability by orchestrating the transcription of DNA-damage response genes.
    • Mutations in CDK12 have been identified in various cancers (ovarian, breast, prostate, intestinal), leading to sensitivity to DNA-damaging agents (e.g., platin derivatives, alkylating agents) and PARP inhibitors.
    • This sensitivity suggests a synthetic lethality approach for cancer treatment targeting CDK12-deficient tumors, as observed in high-grade serous ovarian carcinomas.

    Impact:

    • CDK12 is emerging as a promising therapeutic target for specific cancer types.
    • Targeting CDK12 could lead to novel synthetic lethality-based cancer treatments.
    • Understanding CDK12's role enhances therapeutic strategies for cancers with DNA-repair deficiencies.

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