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Updated: Jul 14, 2026
10:03
Isolation of CA1 Nuclear Enriched Fractions from Hippocampal Slices to Study Activity-dependent Nuclear Import of Synapto-nuclear Messenger Proteins
Published on: August 10, 2014
La translocación nuclear de la proteína asociada a CAM activa la transcripción para la facilitación a largo plazo en
Seung-Hee Lee1, Chae-Seok Lim, Hyungju Park
1Department of Biological Sciences, Institute of Molecular Biology and Genetics, RIO, College of Natural Sciences, Seoul National University, San 56-1 Silim-dong Gwanak-gu, Seoul 151-747, Korea.
Cell
|May 22, 2007
Resumen
La serotonina (5-HT) desencadena cambios sinápticos a largo plazo mediante la activación de CAMAP. Esta proteína se mueve hacia el núcleo, co-activando los factores de transcripción esenciales para la formación de la memoria en Aplysia.
Área de la Ciencia:
- La neurociencia es la neurociencia.
- Biología Molecular Biología Molecular
- Biología celular Biología celular.
Sus antecedentes:
- La serotonina (5-HT) induce la facilitación a largo plazo (LTF) en las sinapsis motor-sensoriales de Aplysia.
- La formación de LTF requiere una regulación a la baja de apCAM y una transcripción mediada por CREB.
Objetivo del estudio:
- Para investigar la relación entre apCAM y CREB en LTF.
- Para identificar las proteínas que vinculan los cambios sinápticos a los eventos nucleares.
Principales métodos:
- Cribado de dos híbridos de levadura para identificar proteínas asociadas con apCAM.
- Investigó el papel de CAMAP en las neuronas sensoriales durante LTF.
Principales resultados:
- Proteína asociada al apCAM clonada (CAMAP).
- 5-HT activa PKA, fosforila CAMAP, causando su disociación de apCAM.
- El CAMAP fosforilado se transloca al núcleo, coactivando CREB1 y ApC / EBP para la iniciación de LTF.
Conclusiones:
- CAMAP actúa como una señal retrógrada, vinculando la activación sináptica a la transcripción nuclear.
- CAMAP es esencial para iniciar la facilitación a largo plazo específica de la sinapsis en Aplysia.
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