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

Moretti, Francesca; Rolando, Chiara; Winker, Moritz; Ivanek, Robert; Rodriguez, Javier; Von Kriegsheim, Alex; Taylor, Verdon; Bustin, Michael; 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. American Society for Microbiology 10.1128/MCB.00133-15

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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.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Cell Biology

UniBE Contributor:

Pertz, Olivier

Subjects:

500 Science > 570 Life sciences; biology

ISSN:

0270-7306

Publisher:

American Society for Microbiology

Language:

English

Submitter:

Olivier Pertz

Date Deposited:

03 May 2016 10:12

Last Modified:

06 May 2016 05:26

Publisher DOI:

10.1128/MCB.00133-15

PubMed ID:

25825524

BORIS DOI:

10.7892/boris.81854

URI:

https://boris.unibe.ch/id/eprint/81854

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