Differential Regulation of Ecdysteroidogenic P450 Gene Expression in the Silkworm, Bombyx mori
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概要
- 論文の詳細を見る
The regulatory mechanisms of ecdysteroidogenic P450 gene expression were investigated in the silkworm, Bombyx mori. Bommo-FMRFamide (BRFa), a neural suppressor of prothoracic gland (PG) activity, was found to suppress the expression of several P450 genes induced by prothoracicotropic hormone (PTTH) in the PG. A transcription inhibitor suppressed PTTH-induced expression of the P450 genes and the opposing effects of BRFa, while their short-term effects on ecdysteroidogenesis remained unchanged. This result suggests that the effects of these factors on the P450 gene transcripts become obvious on a longer time scale. Moreover, spontaneous expression of a P450 gene was observed in long-term PG culture, and was repressed by juvenile hormone. These results explain well the developmental fluctuation patterns of the P450 gene transcripts in the PG, indicating that multiple factors coordinate to regulate basal PG activity during insect development.
- 社団法人 日本農芸化学会の論文
- 2007-11-23
著者
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Niwa Ryusuke
Dep. Of Integrated Biosciences Graduate School Of Frontier Sciences The Univ. Of Tokyo 5-1-5 Kashiwa
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Kataoka Hiroshi
Department of Applied Chemistry and Biotechnology, Niigata Institute of Technology
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Honda Naoko
Department of Mechanical Science and Engineering, Nagoya University
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YAMANAKA Naoki
Department of Surgery, Shimonoseki City Hospital
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Mizoguchi Akira
Div. Of Biological Sci. Graduate School Of Sci. Nagoya Univ.
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Mizoguchi Akira
Division Of Biological Science Graduate School Of Science Nagoya University
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Honda Naoko
Department Of Integrated Biosciences Graduate School Of Frontier Sciences The University Of Tokyo
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Yamanaka Naoki
Department Of Integrated Biosciences Graduate School Of Frontier Sciences The University Of Tokyo
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Okamoto Naoki
Department Of Integrated Biosciences Graduate School Of Frontier Sciences The University Of Tokyo
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OSATO Noe
Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo
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NIWA Ryusuke
Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo
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Niwa Ryusuke
Initiative For The Promotion Of Young Scientists' Independent Res. Graduate School Of Life And
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Niwa Ryusuke
Department Of Integrated Biosciences Graduate School Of Frontier Sciences The University Of Tokyo
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Kataoka Hiroshi
Department Of Applied Biological Technology The University Of Tokyo
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Kataoka Hiroshi
Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo
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KATAOKA Hiroshi
Department of Agricultural Chemistry, The University of Tokyo
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