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Science 323 (5911): 256-259

Copyright © 2009 by the American Association for the Advancement of Science

HDAC4 Regulates Neuronal Survival in Normal and Diseased Retinas

Bo Chen, and Constance L. Cepko

Abstract: Histone deacetylase 4 (HDAC4) shuttles between the nucleus and cytoplasm and serves as a nuclear co-repressor that regulates bone and muscle development. We report that HDAC4 regulates the survival of retinal neurons in the mouse in normal and pathological conditions. Reduction in HDAC4 expression during normal retinal development led to apoptosis of rod photoreceptors and bipolar (BP) interneurons, whereas overexpression reduced naturally occurring cell death of the BP cells. HDAC4 overexpression in a mouse model of retinal degeneration prolonged photoreceptor survival. The survival effect was due to the activity of HDAC4 in the cytoplasm and relied at least partly on the activity of hypoxia-inducible factor 1{alpha} (HIF1{alpha}). These data provide evidence that HDAC4 plays an important role in promoting the survival of retinal neurons.

Departments of Genetics and Opthalmology and Howard Hughes Medical Institute, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA. E-mail: bochen{at}genetics.med.harvard.edu; cepko{at}genetics.med.harvard.edu


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