Title : Glucose induced MAPK signalling influences NeuroD1-mediated activation and nuclear localization.

Pub. Date : 2002 Sep 25

PMID : 12297313






9 Functional Relationships(s)
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1 Glucose induced MAPK signalling influences NeuroD1-mediated activation and nuclear localization. Glucose neurogenic differentiation 1 Mus musculus
2 Here we show NeuroD1 is primarily cytoplasmic at non-stimulating glucose concentrations (i.e. 3 mM) in MIN6 beta-cells and nuclear under stimulating conditions (i.e. 20 mM). Glucose neurogenic differentiation 1 Mus musculus
3 Treatment with the MEK inhibitor PD98059 or substitution of a serine for an alanine at a potential mitogen-activated protein kinase phosphorylation site (S274) in NeuroD1 significantly increased the cytoplasmic level at 20 mM glucose. 2-(2-amino-3-methoxyphenyl)-4H-1-benzopyran-4-one neurogenic differentiation 1 Mus musculus
4 Treatment with the MEK inhibitor PD98059 or substitution of a serine for an alanine at a potential mitogen-activated protein kinase phosphorylation site (S274) in NeuroD1 significantly increased the cytoplasmic level at 20 mM glucose. Serine neurogenic differentiation 1 Mus musculus
5 Treatment with the MEK inhibitor PD98059 or substitution of a serine for an alanine at a potential mitogen-activated protein kinase phosphorylation site (S274) in NeuroD1 significantly increased the cytoplasmic level at 20 mM glucose. Alanine neurogenic differentiation 1 Mus musculus
6 Treatment with the MEK inhibitor PD98059 or substitution of a serine for an alanine at a potential mitogen-activated protein kinase phosphorylation site (S274) in NeuroD1 significantly increased the cytoplasmic level at 20 mM glucose. Glucose neurogenic differentiation 1 Mus musculus
7 The rise in NeuroD1-mediated transcription in response to glucose also correlated with the change in sub-cellular localization, a response attenuated by PD98059. Glucose neurogenic differentiation 1 Mus musculus
8 The rise in NeuroD1-mediated transcription in response to glucose also correlated with the change in sub-cellular localization, a response attenuated by PD98059. 2-(2-amino-3-methoxyphenyl)-4H-1-benzopyran-4-one neurogenic differentiation 1 Mus musculus
9 The data strongly suggest that glucose-stimulation of the MEK-ERK signalling pathway influences NeuroD1 activity at least partially through effects on sub-cellular localization. Glucose neurogenic differentiation 1 Mus musculus