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Article Dans Une Revue Neuroscience Année : 2001

Regulated expression of the neuronal calcium sensor-1 gene during long-term potentiation in the dentate gyrus in vivo.

Résumé

Neuronal calcium sensor-1 (NCS-1), the mammalian homologue of frequenin, is a member of a highly conserved family of neuron-specific calcium-binding proteins which has been implicated in exocytosis and in multiple calcium-signalling pathways, suggesting a potential involvement in mechanisms of neuronal plasticity. Here, using in situ hybridization, we report an increased induction of the mRNA encoding NCS-1 in dentate granule cells following the induction of long-term potentiation in the awake rat. We show that NCS-1 mRNA levels are increased 1 and 3 h after long-term potentiation in an N-methyl-D-aspartate receptor-dependent manner, returning to baseline expression levels by 6 h. Electroconvulsive stimulation also induced NCS-1 mRNA transcription in the dentate gyrus, but at the different time of 6 h post-seizure, returning to baseline by 12 h. These results show that regulated expression of the NCS-1 gene is part of the transcriptional response associated with activity-dependent neuronal plasticity in vivo and suggest a molecular mechanism capable of mediating a functional change in synapse sensitivity to calcium and calcium-signalling pathways after long-term potentiation.

Dates et versions

hal-01468148 , version 1 (15-02-2017)

Identifiants

Citer

Alexis Génin, Sabrina Davis, H Meziane, Valérie Doyère, J Jeromin, et al.. Regulated expression of the neuronal calcium sensor-1 gene during long-term potentiation in the dentate gyrus in vivo.. Neuroscience, 2001, 106 (3), pp.571-7. ⟨10.1016/S0306-4522(01)00301-3⟩. ⟨hal-01468148⟩
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