A small-molecule inducer of PDX1 expression identified by high-throughput screening.
A small-molecule inducer of PDX1 expression identified by high-throughput screening.
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DOI:
10.1016/j.chembiol.2013.10.013
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发表时间:
2013-12-19
影响因子:
--
通讯作者:
Wagner BK
中科院分区:
文献类型:
--
作者:
Yuan Y;Hartland K;Boskovic Z;Wang Y;Walpita D;Lysy PA;Zhong C;Young DW;Kim YK;Tolliday NJ;Sokal EM;Schreiber SL;Wagner BK
Pancreatic and duodenal homeobox 1 (PDX1), a member of the homedomain-containing transcription factor family, is a key transcription factor important for both pancreas development and mature beta-cell function. The ectopic overexpression of Pdx1, Neurog3, and MafA in mice reprograms acinar cells to insulin-producing cells. We developed a qPCR-based gene-expression assay to screen >60,000 compounds for expression of each of these genes in the human PANC-1 ductal carcinoma cell line. We identified BRD7552, which up-regulated PDX expression in both primary human islets and ductal cells, and induced epigenetic changes in the PDX1 promoter consistent with transcriptional activation. Prolonged compound treatment induced insulin mRNA and protein, and enhanced insulin expression induced by the three-gene combination. These results provide a proof of principle for identifying small molecules that induce expression of transcription factors to control cellular reprogramming.
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