Related Experiment Video
Updated: Sep 16, 2025
08:53
Identifying the Effects of BRCA1 Mutations on Homologous Recombination using Cells that Express Endogenous Wild-type BRCA1
Published on: February 17, 2011
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Curcumin Induces Homologous Recombination Deficiency by BRCA2 Degradation in Breast Cancer and Normal Cells
Zofia M Komar1, Marjolijn M Ladan1,2, Nicole S Verkaik1,2
1Department of Molecular Genetics, Erasmus Medical Center Cancer Institute, University Medical Center, 3015CN Rotterdam, The Netherlands.
Cancers
|July 12, 2025
Summary
Curcumin may induce DNA repair deficiencies (HRD) in both cancer and normal cells. This suggests combining curcumin with Poly (ADP-ribose) polymerase inhibitors (PARPi) could increase toxicity risks and requires careful monitoring.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Breast cancer (BC) is a leading global cancer in women.
- Poly (ADP-ribose) polymerase inhibitors (PARPi) offer targeted therapy for tumors with Homologous Recombination deficiency (HRD).
- Many cancer patients use herbal supplements like curcumin alongside conventional treatments.
Purpose of the Study:
- To investigate curcumin's effect on Homologous Recombination (HR) DNA repair.
- To evaluate curcumin's potential to induce Homologous Recombination deficiency (HRD).
- To assess the safety of combining curcumin with PARPi therapy.
Main Methods:
- Assessed RAD51 ionizing radiation-induced focus (IRIF) formation in breast cancer cell lines and a PDX model treated with curcumin.
- Analyzed BRCA2 protein levels via Western blot in curcumin-treated breast cancer cell lines.
- Performed clonogenic survival assays to evaluate cell viability after curcumin and/or PARPi treatment.
Main Results:
- Curcumin treatment reduced RAD51 IRIF formation, indicating impaired DNA repair capacity.
- A decrease in BRCA2 protein levels was observed in response to curcumin.
- Curcumin induced HRD in both cancerous and normal cells, suggesting potential for increased toxicity with PARPi.
Conclusions:
- Curcumin can induce Homologous Recombination deficiency (HRD) in both normal and cancerous cells.
- Combining curcumin with PARPi therapy may elevate toxicity risks.
- Clinical use of curcumin with anti-cancer treatments necessitates vigilant monitoring for adverse effects.
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