摘要:
Activation of the apolipoprotein AI (apoAI) gene in mammalian liver cells has been studied, as described herein, and shown to depend on synergistic interactions between nuclear proteins which bind to three distinct sites within a hepatocyte-specific transcriptional enhancer located between nucleotides -222 to -110 5' of the human apoAI gene (relative to the transcription start site). Two proteins, the apoAI regulatory protein-1 and the retinoic acid receptor RXR.alpha., have been shown to regulate expression of the apoAI gene.