The Etv1 transcription factor activity-dependently downregulates a set of genes controlling cell growth and differentiation in maturing cerebellar granule cells.

Abstract:

:In the early postnatal period, cerebellar granule cells exhibit an activity-dependent downregulation of a set of immaturation genes involved in cell growth and migration and are shifted to establishment of a mature network formation. Through the use of a granule cell culture and both pharmacological and RNA interference (siRNA) analyses, the present investigation revealed that the downregulation of these immaturation genes is controlled by strikingly unified signaling mechanisms that operate sequentially through the stimulation of AMPA and NMDA receptors, tetrodotoxin-sensitive Na(+) channels and Ca(2+)/calmodulin-dependent protein kinase II (CaMKII). This signaling cascade induces the Etv1 transcription factor, and knockdown of Etv1 by a siRNA technique prevented this activity-dependent downregulation of immaturation genes. Thus, taken into consideration the mechanism that controls the upregulation of maturation genes involved in synaptic formation, these results indicate that Etv1 orchestrates the activity-dependent regulation of both maturation and immaturation genes in developing granule cells and plays a key role in specifying the identity of mature granule cells in the cerebellum.

authors

Okazawa M,Abe H,Nakanishi S

doi

10.1016/j.bbrc.2016.04.017

subject

Has Abstract

pub_date

2016-05-13 00:00:00

pages

1071-1077

issue

4

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(16)30512-5

journal_volume

473

pub_type

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