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Secrets of DNA-PKcs beyond DNA repair

Sydney Camfield1, Sayan Chakraborty2, Shailendra Kumar Dhar Dwivedi1,2,3

  • 1Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.

NPJ Precision Oncology
|July 23, 2024
PubMed

Insights

The DNA-dependent protein kinase catalytic subunit (DNA-PKcs) has canonical DNA repair roles and emerging non-canonical functions in transcription, metabolism, and immunity. Understanding these diverse DNA-PKcs roles is crucial for cancer therapy development.

Area of Science:

  • Molecular Biology
  • Cancer Biology
  • Biochemistry

Background:

  • The DNA-dependent protein kinase catalytic subunit (DNA-PKcs) is crucial for DNA double-strand break repair via non-homologous end joining (NHEJ).
  • Dysregulation of DNA-PKcs is observed in various cancers, leading to the development of DNA-PKcs inhibitors for therapeutic purposes.
  • Previous research primarily focused on the canonical role of DNA-PKcs in NHEJ repair concerning tumorigenesis.

Purpose of the Study:

  • To review the non-canonical functions of DNA-PKcs in cellular biology.
  • To explore the potential contribution of these non-canonical roles to tumorigenesis.
  • To evaluate the implications of targeting DNA-PKcs for cancer treatment.

Main Methods:

  • Literature review of emerging research on DNA-PKcs.
  • Analysis of studies investigating non-canonical DNA-PKcs functions.
  • Evaluation of the link between non-canonical DNA-PKcs roles and cancer.

Main Results:

  • Emerging research highlights non-canonical DNA-PKcs functions beyond DNA repair.
  • These functions include roles in transcriptional regulation, telomere maintenance, metabolic regulation, and immune signaling.
  • These non-canonical activities may significantly impact tumorigenesis.

Conclusions:

  • Non-canonical DNA-PKcs functions represent a significant area of investigation in cancer biology.
  • Targeting these diverse roles of DNA-PKcs may offer novel therapeutic strategies for cancer treatment.
  • Further research is warranted to fully elucidate the implications of non-canonical DNA-PKcs functions in tumorigenesis and therapy.

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