| Literature DB >> 21497989 |
Sabine Mueller1, Xiaodong Yang, Theo L Sottero, Ashley Gragg, Gautam Prasad, Mei-Yin Polley, William A Weiss, Katherine K Matthay, Andrew M Davidoff, Steven G DuBois, Daphne A Haas-Kogan.
Abstract
Histone deacetylase (HDAC) inhibitors can radiosensitize cancer cells. Radiation is critical in high-risk neuroblastoma treatment, and combinations of HDAC inhibitor vorinostat and radiation are proposed for neuroblastoma trials. Therefore, we investigated radiosensitizing effects of vorinostat in neuroblastoma. Treatment of neuroblastoma cell lines decreased cell viability and resulted in additive effects with radiation. In a murine metastatic neuroblastoma in vivo model vorinostat and radiation combinations decreased tumor volumes compared to single modality. DNA repair enzyme Ku-86 was reduced in several neuroblastoma cells treated with vorinostat. Thus, vorinostat potentiates anti-neoplastic effects of radiation in neuroblastoma possibly due to down-regulation of DNA repair enzyme Ku-86.Entities:
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Year: 2011 PMID: 21497989 PMCID: PMC3244077 DOI: 10.1016/j.canlet.2011.03.010
Source DB: PubMed Journal: Cancer Lett ISSN: 0304-3835 Impact factor: 8.679