蝶的大脑在短时间暴露于激素后,在形态和基因拼接模式上发生了变化
Emilie Dion1,2, Yi Peng Toh3,4, Dantong Zhu3
1Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore, 177543, Singapore. emilie.dion@u.nus.edu.
BMC biology
|January 22, 2026
概括
昆虫大脑在基因拼接中显示出基于性别的差异. 短暂接触男性性激素会改变雌性蝶的大脑结构和基因拼接,影响性偏好.
科学领域:
- 神经伦理学 神经伦理学
- 昆虫神经科学 昆虫神经科学
- 化学生态化学生态学
背景情况:
- 了解特定于性别的大脑差异和昆虫对激素的反应至关重要.
- 以前的研究表明,雄性激素可以改变Bicyclus anynana蝶的女性性偏好.
研究的目的:
- 在暴露于男性性费洛蒙后,研究雌性Bicyclus anynana蝶的形态和分子大脑变化.
- 为了确定特定的大脑区域和基因涉及费洛蒙感知和学习性偏好.
主要方法:
- 男性和女性Bicyclus anynana大脑的3D重建,以分析嗅觉叶球粒.
- 女蝶暴露于野生类型和改性雄性性激素混合物.
- 在天真和暴露的大脑中分析基因表达和差异性拼接模式.
主要成果:
- 嗅觉叶中的一个淋巴体在暴露于激素后显示出体积变化,这表明它在激素感知中发挥了作用.
- 在天真的男性和女性大脑之间观察到基因拼接模式的显著差异.
- 暴露于激素混合物诱导了基因剪接的实质性变化,特别是对编码结合蛋白和RNA结合蛋白的基因.
- 学习的费洛蒙偏好与涉及突触传输的改变蛋白质异型相关.
结论:
- 纯粹的雄性和雌性昆虫大脑在基因拼接方面表现出主要的差异.
- 短时间的激素暴露会导致小脑体积的改变和神经发育相关的基因拼接在女性显著变化.
- 女性大脑中的这些分子变化与改变的性偏好相关,突出显示了昆虫神经生物学的可塑性.
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