Modified lepidopteran receptors and hybrid multifunctional proteins for use in transcription and regulation of transgene expression

   
   

In accordance with the present invention, it has been discovered that nuclear receptor proteins isolated from the silk moth bombyx mori (bR) are useful for the regulation of transgene expression. bR is generally thought to be a strong transcriptional regulator within cells of the silk moth. In accordance with the present invention, it has been discovered that bR is also functional in mammalian cells. It has further been discovered that the addition of activation domains to the bR open-reading frame enhances the activity of the ligand modulated regulator to afford high-level transcriptional induction. Further modifications to the bR ligand binding domain result in receptors with unique transactivational characteristics.

De acordo com a invenção atual, descobriu-se que as proteínas nucleares do receptor isoladas do mori de seda do bombyx da traça (Br) são úteis para o regulamento da expressão do transgene. o Br é pensado geralmente para ser um regulador forte do transcriptional dentro das pilhas da traça de seda. De acordo com a invenção atual, descobriu-se que o Br é também funcional em pilhas mammalian. Mais mais descobriu-se que a adição de domínios da ativação ao frame da abr-leitura do Br realça a atividade do regulador modulado ligand para ter recursos para a indução high-level do transcriptional. Umas modificações mais adicionais ao domínio obrigatório do ligand do Br resultam nos receptors com características originais do transactivational.

 
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