دورية أكاديمية
Enhancing Standard of Care Chemotherapy Efficacy Using DNA-Dependent Protein Kinase (DNA-PK) Inhibition in Preclinical Models of Ewing Sarcoma.
العنوان: | Enhancing Standard of Care Chemotherapy Efficacy Using DNA-Dependent Protein Kinase (DNA-PK) Inhibition in Preclinical Models of Ewing Sarcoma. |
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المؤلفون: | Collins VJ; Translational Sarcoma Biology Section, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland., Ludwig KR; Functional Genetics Section, Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland., Nelson AE; Translational Sarcoma Biology Section, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland., Sundara Rajan S; Functional Genetics Section, Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland., Yeung C; Translational Sarcoma Biology Section, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland., Vulikh K; Molecular Histopathology Lab, Frederick National Laboratory for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland., Isanogle KA; Laboratory Animal Sciences Program, Frederick National Laboratory for Cancer Research, Frederick, Maryland., Mendoza A; Translational Sarcoma Biology Section, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland., Difilippantonio S; Laboratory Animal Sciences Program, Frederick National Laboratory for Cancer Research, Frederick, Maryland., Karim BO; Molecular Histopathology Lab, Frederick National Laboratory for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland., Caplen NJ; Functional Genetics Section, Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland., Heske CM; Translational Sarcoma Biology Section, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland. |
المصدر: | Molecular cancer therapeutics [Mol Cancer Ther] 2024 Aug 01; Vol. 23 (8), pp. 1109-1123. |
نوع المنشور: | Journal Article |
اللغة: | English |
بيانات الدورية: | Publisher: American Association for Cancer Research, Inc Country of Publication: United States NLM ID: 101132535 Publication Model: Print Cited Medium: Internet ISSN: 1538-8514 (Electronic) Linking ISSN: 15357163 NLM ISO Abbreviation: Mol Cancer Ther Subsets: MEDLINE |
أسماء مطبوعة: | Original Publication: Philadelphia, PA : American Association for Cancer Research, Inc., c2001- |
مواضيع طبية MeSH: | DNA-Activated Protein Kinase*/antagonists & inhibitors , DNA-Activated Protein Kinase*/metabolism , Sarcoma, Ewing*/drug therapy , Sarcoma, Ewing*/pathology, Animals ; Humans ; Mice ; Apoptosis/drug effects ; Cell Line, Tumor ; Cell Proliferation/drug effects ; DNA Damage ; Protein Kinase Inhibitors/pharmacology ; Protein Kinase Inhibitors/therapeutic use ; Standard of Care ; Xenograft Model Antitumor Assays |
مستخلص: | Disruption of DNA damage repair via impaired homologous recombination is characteristic of Ewing sarcoma (EWS) cells. We hypothesize that this disruption results in increased reliance on nonhomologous end joining to repair DNA damage. In this study, we investigated if pharmacologic inhibition of the enzyme responsible for nonhomologous end joining, the DNA-PK holoenzyme, alters the response of EWS cells to genotoxic standard of care chemotherapy. We used analyses of cell viability and proliferation to investigate the effects of clinical DNA-PK inhibitors (DNA-PKi) in combination with six therapeutic or experimental agents for EWS. We performed calculations of synergy using the Loewe additivity model. Immunoblotting evaluated treatment effects on DNA-PK, DNA damage, and apoptosis. Flow cytometric analyses evaluated effects on cell cycle and fate. We used orthotopic xenograft models to interrogate tolerability, drug mechanism, and efficacy in vivo. DNA-PKi demonstrated on-target activity, reducing phosphorylated DNA-PK levels in EWS cells. DNA-PKi sensitized EWS cell lines to agents that function as topoisomerase 2 (TOP2) poisons and enhanced the DNA damage induced by TOP2 poisons. Nanomolar concentrations of single-agent TOP2 poisons induced G2M arrest and little apoptotic response while adding DNA-PKi-mediated apoptosis. In vivo, the combination of AZD7648 and etoposide had limited tolerability but resulted in enhanced DNA damage, apoptosis, and EWS tumor shrinkage. The combination of DNA-PKi with standard of care TOP2 poisons in EWS models is synergistic, enhances DNA damage and cell death, and may form the basis of a promising future therapeutic strategy for EWS. (©2024 American Association for Cancer Research.) |
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معلومات مُعتمدة: | ZIA BC011704 United States ImNIH Intramural NIH HHS; Z99 CA999999 United States ImNIH Intramural NIH HHS; Children's Cancer Foundation (CCF); ZIA BC 011774 National Cancer Institute (NCI); ZIA BC011774 United States ImNIH Intramural NIH HHS; Center for Cancer Research (CCR) |
المشرفين على المادة: | EC 2.7.11.1 (DNA-Activated Protein Kinase) 0 (Protein Kinase Inhibitors) |
تواريخ الأحداث: | Date Created: 20240424 Date Completed: 20240801 Latest Revision: 20240815 |
رمز التحديث: | 20240815 |
مُعرف محوري في PubMed: | PMC11293986 |
DOI: | 10.1158/1535-7163.MCT-23-0641 |
PMID: | 38657228 |
قاعدة البيانات: | MEDLINE |
تدمد: | 1538-8514 |
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DOI: | 10.1158/1535-7163.MCT-23-0641 |