Seven-up, the Drosophila homolog of the COUP-TF orphan receptors, controls cell proliferation in the insect kidney
Copyright policy )Seven-up, the Drosophila homolog of the COUP-TF orphan receptors, controls cell proliferation in the insect kidney
Morphogenesis of the insect kidney, the Malpighian tubules, is controlled in Drosophila by a single large cell, the tip cell. It has been postulated that this cell sends out a mitogenic signal that induces the division of neighboring cells. The signal and the molecules that receive it have remained elusive. We show that the COUP-TF-related nuclear orphan receptor Seven-up is a key component that becomes induced in response to mitogenic EGF receptor signaling activity emanating from the tip cell. Seven-up in turn is capable of regulating the transcription of cell cycle regulators.
Receptors, Steroid, COUP Transcription Factor I, Cell Cycle, Gene Expression, Gene Expression Regulation, Developmental, Receptors, Cytoplasmic and Nuclear, Genes, Insect, Malpighian Tubules, DNA-Binding Proteins, ErbB Receptors, Eukaryotic Cells, Animals, Insect Proteins, Drosophila, Mitogens, Cell Division, Signal Transduction, Transcription Factors
Receptors, Steroid, COUP Transcription Factor I, Cell Cycle, Gene Expression, Gene Expression Regulation, Developmental, Receptors, Cytoplasmic and Nuclear, Genes, Insect, Malpighian Tubules, DNA-Binding Proteins, ErbB Receptors, Eukaryotic Cells, Animals, Insect Proteins, Drosophila, Mitogens, Cell Division, Signal Transduction, Transcription Factors
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