Summary
Thyroid transcription factor-1 (TTF-1), also known as NKX2-1, plays a role as a lineage-survival oncogene in lung adenocarcinoma that possesses double-edged sword characteristics. Although evidence from previous studies has steadily accumulated regarding the roles of TTF-1 in transcriptional regulation of protein-coding genes, little is known about its regulatory relationship with microRNAs. Here, we utilized an integrative approach designed to extract maximal information from expression profiles of both patient tumors in vivo and TTF-1-inducible cell lines in vitro, which identified microRNA (miR)-532-5p as a novel transcriptional target of TTF-1. We found that miR-532-5p is directly regulated by TTF-1 through its binding to a genomic region located 8 kb upstream of miR-532-5p, which appe
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