对雌性Drosophila melanogaster的影响及其跨代遗传效应
Fusheng Wang1, Pingping Yang1, Lu Xu1
1College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China.
Journal of environmental management
|January 16, 2025
概括
暴露于会损害果的繁殖能力和卵巢健康. 这些负面影响,包括基因表达的变化,可以通过几代人传给后代.
科学领域:
- 环境毒理学环境毒理学
- 发展生物学 发展生物学
- 遗传学 是一个遗传学.
背景情况:
- (Cd) 是一种在日常生活中普遍存在的有毒重金属.
- 暴露于Cd可能会对生物体的发育,寿命和繁殖产生负面影响.
- 了解重金属的跨代影响对于生态系统健康至关重要.
研究的目的:
- 为了研究 (Cd) 暴露对Drosophila melanogaster生殖系统的跨代影响.
- 分析Cd对卵巢形态,生育能力和关键生殖基因表达的影响.
- 探索微RNA (miRNA) 在Cd诱导的生殖毒性的跨代遗传中的作用.
主要方法:
- 草黄虫 (F0代) 暴露于不同的Cd度 (0,2.25,4.5毫克/公斤).
- 后代 (F1-F4代) 在标准介质中被培养,以评估跨代的影响.
- 卵巢形态,亡,生育,激素水平 (20-Hydroxyecdysone),维特洛金,生殖相关的基因表达和miR-927水平被分析.
主要成果:
- 暴露于会引起卵巢形态变化,增加亡,并降低F0的生育能力.
- 观察到20-Hydroxyecdysone和vitellogenin水平的显著下降.
- 对与生殖相关的基因 (幽灵,幻影,解体,影子,阴影,ECR,vg,Kr-h1) 的抑制作用和增加的miR-927表达被传递给F1-F3代人.
结论:
- 引起的生殖损伤和雌性的基因表达改变可以被后代遗传.
- 微RNA (miRNA) 表达的变化可能会调解的影响的跨代遗传.
- 由于存在潜在的生态风险,重金属毒性在生物体中的跨代遗传需要进一步调查.
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