Abstract
Sodium butyrate (NaBt), a histone deacetylase inhibitor, can cause apoptosis in a number of cancer cells. However, the mechanism of this action is poorly understood. Increased intracellular [Ca2+] level has been suggested as a likely mechanism, but there is little corroborating data. In this report we provide evidence that NaBt-treated MSN neuroblastoma cells undergo massive apoptosis in the presence of serum and regardless of external or internal [Ca2+] levels. Presented data suggest that apoptotic effect of NaBt is both time- and dose-dependent (LD50 1 mM); and that, presence of serum or cAMP, a second messenger molecule that modulates the apoptotic program in a wide variety of cells could not circumvent the apoptotic effect of NaBt. Our findings suggest that NaBt-induced apoptosis in MSN neuroblastoma cells occurs via a pathway that is independent of Ca2+flux, intracellular [Ca2+] or cAMP levels. Further, we also present data that exclude a role for PKC or histones acetylation.
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Rozental, R., Faharani, R., Yu, Y. et al. Sodium Butyrate Induces Apoptosis in MSN Neuroblastoma Cells in a Calcium Independent Pathway. Neurochem Res 29, 2125–2134 (2004). https://doi.org/10.1007/s11064-004-6886-9
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DOI: https://doi.org/10.1007/s11064-004-6886-9