Growth Cone Localization of the mRNA Encoding the Chromatin Regulator HMGN5 Modulates Neurite Outgrowth

Moretti, Francesca and Rolando, Chiara and Winker, Moritz and Ivanek, Robert and Rodriguez, Javier and Von Kriegsheim, Alex and Taylor, Verdon and Bustin, Michael and Pertz, Olivier. (2015) Growth Cone Localization of the mRNA Encoding the Chromatin Regulator HMGN5 Modulates Neurite Outgrowth. Molecular and Cellular Biology, 35 (11). pp. 2035-2050.

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Neurons exploit local mRNA translation and retrograde transport of transcription factors to regulate gene expression in response to signaling events at distal neuronal ends. Whether epigenetic factors could also be involved in such regulation is not known. We report that the mRNA encoding the high-mobility group N5 (HMGN5) chromatin binding protein localizes to growth cones of both neuron-like cells and of hippocampal neurons, where it has the potential to be translated, and that HMGN5 can be retrogradely transported into the nucleus along neurites. Loss of HMGN5 function induces transcriptional changes and impairs neurite outgrowth, while HMGN5 overexpression induces neurite outgrowth and chromatin decompaction; these effects are dependent on growth cone localization of Hmgn5 mRNA. We suggest that the localization and local translation of transcripts coding for epigenetic factors couple the dynamic neuronal outgrowth process with chromatin regulation in the nucleus.
Faculties and Departments:03 Faculty of Medicine > Departement Biomedizin > Division of Anatomy > Embryology and Stem Cell Biology (Taylor)
UniBasel Contributors:Taylor, Verdon
Item Type:Article, refereed
Article Subtype:Research Article
ISSN:1098-5549 (Electronic) 0270-7306 (Linking)
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:01 Dec 2018 10:32
Deposited On:01 Dec 2018 10:32

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