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引用次数: 51
蜱体内卵黄蛋白的合成、加工和激素调节
本研究旨在确定卵母细胞生成素(Vg)的加工过程以及幼激素(JH)在斑节蜱卵母细胞发生调控中的作用。蜱通常需要吸血才能诱导卵黄生成。然而,我们已经证明,一种拟除虫菊酯,即氯氰菊酯(CyM),可以刺激未饲养的毛羽鸟蛛雌性的Vg合成。使用[35S]-甲硫氨酸通过SDS-PAGE斑点扫描和荧光图谱分析Vg的浓度和合成。尽管未受精的雌性在血淋巴中显示出高滴度的Vg,但这并不是由于新的合成。充血刺激的Vg合成从充血后第2天开始增加,并在第8天达到最大水平。Vg在脂肪体内合成,分泌到血淋巴中,然后加工并作为卵黄蛋白掺入卵巢。将JH I、II和III、甲氧平(JHA)和CyM局部应用于未受精的雌性,并在第5天通过荧光描记术分析Vg合成。JH和JHA不刺激Vg的合成。CyM刺激Vg合成,但不刺激卵巢发育。这些初步结果表明JH在该物种中不起调节卵黄蛋白原合成的作用。
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