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An Efficient Strategy for Generating Tissue-specific Binary Transcription Systems in Drosophila by Genome Editing
Published on: September 19, 2018
La especificidad tisular de la transposición del elemento Drosophila P está regulada a nivel de empalme de ARNm
Cell
|January 17, 1986
Resumen
La transposición del elemento P a la transposición del elemento P.
Área de la Ciencia:
- Biología Molecular Biología Molecular
- Genética La genética.
- Elementos trasponibles Los elementos trasponibles son los elementos trasponibles.
Sus antecedentes:
- Los elementos P son elementos genéticos móviles en Drosophila melanogaster.
- Su transposición se restringe a la línea germinal, un fenómeno que no se comprende completamente.
Objetivo del estudio:
- Para aclarar el mecanismo regulador que controla la transposición del elemento P específico de la línea germinal.
- Para identificar los eventos moleculares específicos que rigen esta especificidad.
Principales métodos:
- Análisis de las transcripciones de ARN del elemento P de las células somáticas.
- Mutagénesis in vitro de las secuencias de elementos P.
- Análisis genético de mutantes del elemento P.
Principales resultados:
- La transposición del elemento P está regulada en el nivel de empalme del ARNm, no en la transcripción.
- Existe un tercer intrón en la transcripción de ARN del elemento P mayor.
- La eliminación de este tercer intrón es esencial para la producción de la transposasa y ocurre específicamente en la línea germinal.
Conclusiones:
- La especificidad de la línea germinal de la transposición del elemento P se logra a través del empalme regulado de un tercer intrón.
- Este evento de empalme es el único determinante de la restricción de la línea germinal para la transposición del elemento P.
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