Vitamin D3 responsive element present 5 'upstream of p27 / Kip1 gene, and method for screening drug using the sequence

摘要

A 44-bp region that confers vitamin D3-responsiveness to the human p27Kip1 promoter in the human p27Kip1 transcriptional regulatory mechanism was revealed. This region also conferred vitamin D3-responsiveness to a heterogenous promoter. Moreover, it was found that vitamin D3 enhances the binding between the CCAAT box existing in the region and the NF-Y protein and also the binding between the Sp1 sequence (also existing in the region) and the Sp1 protein, thus inducing human p27Kip1 transcription. Also revealed were methods of screening for pharmaceutical agents that regulate the expression of the p27Kip1 gene using these molecular mechanisms.