Curcumin-induced histone hypoacetylation enhances caspase-3-dependent glioma cell death and neurogenesis of neural progenitor cells

Stem Cells and Development
Soo-Kyung KangHyo-Gon Jeon

Abstract

Acetylation of histones and nonhistone proteins is an important post-translational modification involved in the regulation of gene expression in mammalian cells. Dysfunction of histone acetyltransferase (HAT) is often associated with the manifestation of several diseases. In this report, HATs are new targets for the development of therapeutics. Our studies first proved that curcumin induces histone hypoacetylation in brain cancer cells and finally induces apoptotic cell death through a (PARP)- and caspase 3-mediated manner. In addition, curcumin induces recontrolling of neural stem cell fates. It induces effective neurogenesis, synaptogenesis, and migration of neural progenitor cells in vitro in brain-derived adult neural stem cells. We also confirmed the neurogenic effect of curcumin in our in vivo experiments. Curcumin actively suppressed differentiation in astrocytes while promoting differentiation into the neurons associated with decrease of histone H3 and H4 acetylation. We suggest that histone hypoacetylation plays an important role in determine stem cell fate through controlling the simultaneous expression of many genes. Thus, the present finding that curcumin, a nontoxic dietary compound, is a histone acetyltransferase ...Continue Reading

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