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DNArepairK: An Interactive Database for Exploring the Impact of Anticancer Drugs onto the Dynamics of DNA Repair

Yordan Babukov1, Radoslav Aleksandrov2, Aneliya Ivanova2

  • 1Faculty of Mathematics and Informatics, Sofia University, St. Kliment Ohridski, 5 James Bourchier Blvd., 1164 Sofia, Bulgaria.

Biomedicines
|September 28, 2021
PubMed

Insights

This study introduces DNArepairK, a database detailing DNA repair protein dynamics in living cells. It reveals how these proteins interact and how anticancer drugs affect DNA repair pathways.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Genomics

Background:

  • Cells face constant DNA damage from mutagens, necessitating robust DNA repair mechanisms.
  • Eukaryotic cells employ complex, spatiotemporally coordinated DNA repair pathways to maintain genomic stability.
  • Understanding the dynamics of DNA repair protein recruitment is crucial for comprehending cellular responses to damage.

Purpose of the Study:

  • To create DNArepairK, an open-access database quantifying DNA repair protein kinetics.
  • To visualize and compare the dynamics of 70 fluorescently tagged DNA repair proteins in living cells.
  • To investigate the impact of PARP1/2 inhibitors on DNA damage response dynamics.

Main Methods:

  • Utilized live-cell imaging of fluorescently tagged DNA repair proteins in HeLa Kyoto cells.
  • Developed an interactive graphical representation of protein recruitment and removal kinetics.
  • Collected kinetic data for 70 DNA repair proteins in both untreated and talazoparib-treated cells.

Main Results:

  • DNArepairK provides kinetic data for 70 DNA repair proteins at complex DNA damage sites.
  • Interactive visualizations and movies allow comparison of protein dynamics across different repair pathways.
  • Data reveals the effects of talazoparib (a PARP1/2 inhibitor) on DNA repair protein dynamics.

Conclusions:

  • DNArepairK offers a unique dataset valuable for studying the DNA damage response.
  • The database can inform the development and evaluation of novel DNA repair-targeting anticancer drugs.
  • Understanding protein dynamics is key to advancing cancer therapeutics.
Keywords:
CRC mathematical modelingDNA damage responseDNA repair protein kineticsDNArepairK databasePARP1/2 inhibitorsanticancer drug developmentlaser micro-irradiationlive cell imagingtalazoparib

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