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Rapid Synthesis and Screening of Chemically Activated Transcription Factors with GFP-based Reporters
Published on: November 26, 2013
Efectos independientes del factor liberador de la hormona del crecimiento sobre la liberación de la hormona del
Nature
|March 21, 1985
Resumen
El factor de liberación de la hormona del crecimiento (GHRF) estimula la transcripción génica de la hormona del crecimiento (GH) independientemente de la liberación de GH. Otros agentes pueden desencadenar la liberación de GH sin afectar la transcripción del gen GH en las células pituitarias.
Área de la Ciencia:
- Endocrinología Endocrinología.
- Biología Molecular Biología Molecular
- Biología celular Biología celular.
Sus antecedentes:
- Las células somatotrópicas de la hipófisis anterior sintetizan y secretan la hormona del crecimiento (GH).
- Los péptidos hipotalámicos, el factor de liberación de la hormona del crecimiento (GHRF) y la somatostatina, regulan la liberación de GH.
- El GHRF estimula la liberación de GH, mientras que la somatostatina la inhibe.
Objetivo del estudio:
- Para investigar la relación entre la transcripción del gen GH y la liberación de GH.
- Para determinar si el GHRF estimula la transcripción del gen GH independientemente de la liberación de GH.
- Para examinar si la liberación de GH puede ocurrir sin afectar la transcripción génica de GH.
Principales métodos:
- Se utilizaron cultivos primarios de células de la hipófisis anterior de rata.
- Las células fueron tratadas con GHRF y otros agentes.
- Se midió la transcripción del gen GH y la liberación de GH.
Principales resultados:
- El tratamiento con GHRF estimuló tanto la transcripción génica de GH como la liberación de GH.
- GHRF estimuló la transcripción del gen GH independientemente de la liberación de GH.
- Otros agentes estimulan la liberación de GH sin afectar la transcripción del gen GH.
Conclusiones:
- La transcripción del gen GH y la liberación de GH son procesos regulados independientemente.
- El GHRF actúa sobre las células pituitarias para estimular la transcripción del gen GH.
- Las células pituitarias pueden liberar GH sin un aumento simultáneo en la transcripción del gen GH.
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