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  • Title: Sequence and characterisation of the RET proto-oncogene 5' flanking region: analysis of retinoic acid responsiveness at the transcriptional level.
    Author: Patrone G, Puliti A, Bocciardi R, Ravazzolo R, Romeo G.
    Journal: FEBS Lett; 1997 Dec 08; 419(1):76-82. PubMed ID: 9426223.
    Abstract:
    The RET proto-oncogene encodes a receptor tyrosine kinase expressed during neural crest development. RET expression is enhanced in vitro by several differentiating agents, including retinoic acid (RA), which up-regulates RET expression in neuroblastoma cell lines. In the present work we sequenced and analysed a 5 kbp genomic fragment 5' to RET. Three deletion fragments of this region were tested for their RA inducibility in transient transfection assays and failed to support the hypothesis of a direct transcriptional activation. Finally, our functional analysis of a candidate RA response element present in the RET promoter provides new hints for the understanding of the interaction between nuclear receptors and their specific recognition sites.
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