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Updated: May 13, 2026

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Measuring and Altering Mating Drive in Male Drosophila melanogaster
Published on: February 15, 2017
男性の補助腺ペプチドで,雌のD. melanogasterの生殖行動を調節する
P S Chen1, E Stumm-Zollinger, T Aigaki
1Institute of Zoology, University of Zürich, Switzerland.
Cell
|July 29, 1988
まとめ
フルーツフライの雄の補助腺は,雌の受容性を低下させ,産卵を促すペプチドを生成する. この36アミノ酸ペプチドは,シーケンシングとクローニングによって特定され,生殖行動において重要な役割を果たします.
科学分野:
- 生殖生物学 生殖生物学
- 分子内分泌学分子内分泌学
- ドロソフィラ・メラノガスター 研究 研究
背景:
- ドロソフィラ・メラノガスターの男性付属腺は,女性の生殖行動に影響を与える化合物を合成し分泌する.
- ある特定のペプチドは,女性の性的受容性を抑制し,卵の位置を刺激することが知られている.
- このペプチドは,典型的には交配時に転送されますが,直接投与すると生物学的活性を発揮することができます.
研究 の 目的:
- 雌性性受容性を抑制し,ドロソフィラ・メラノガスターの産卵を刺激するペプチドの特徴を明らかにする.
- この生殖ペプチドのアミノ酸配列と前駆体構造を決定するために.
- ペプチドをコードする遺伝子とその染色体位置を特定するために.
主な方法:
- 男性の補助腺から生物学的活性ペプチドの浄化.
- 浄化されたペプチドのアミノ酸配列.
- オリゴヌクレオチド誘導のcDNAクローンで,前駆体配列とmRNAの特徴を決定する.
- ポリテン染色体に遺伝子を局所化するためにインシットウ・ハイブリダイゼーション.
主要な成果:
- 活性ペプチドは36個のアミノ酸で構成されています.
- それは19の残留物のN端水性シグナル配列を持つ前駆体として合成されます.
- 前駆ペプチドは,男性付属腺にのみ存在する短いmRNAによってコードされます.
- このペプチドをコードする遺伝子はポリテン染色体70Aの位置に位置しています.
結論:
- 男性の付属腺からの特定の36アミノ酸ペプチドは,Drosophila melanogasterの女性の生殖行動に大きな影響を与えます.
- 分子特徴は,前駆体構造と組織特異の遺伝子発現を明らかにし,生殖シグナル伝達の複雑さを強調しています.
- 遺伝子の局所化は,生殖行動の調節に関するさらなる遺伝学的研究のための基礎を提供します.
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