抗生素改变了模型鱼的发育和基因表达Nematostella vectensis
Quinton Krueger1,2, Britney Phippen1, Adam Reitzel1,2
1Biological Sciences, University of North Carolina at Charlotte, Charlotte, NC, United States of America.
PeerJ
|May 24, 2024
概括
抗生素暴露延迟了幼虫的定居,并改变了虫Nematostella vectensis的基因表达,影响了发育和新陈代谢. 这些发现凸显了抗生素对海洋无脊椎动物的更广泛的生理影响,超出了病原体控制范围.
科学领域:
- 海洋生物学 海洋生物学
- 发展生物学 发展生物学
- 微生物学 微生物学
背景情况:
- 抗生素对于控制病原体至关重要,但可以对宿主发育和生理学产生负面影响,特别是在生命早期.
- 对海洋无脊椎动物的杀伤性抗生素影响尚不清楚,尽管可能减少宿主健康和长期生理变化.
- 这项研究调查了抗生素治疗对模拟鱼,Nematostella vectensis的发展,基因表达和细菌群落的影响.
研究的目的:
- 量化不同抗生素和度对 * Nematostella vectensis * 幼虫发育和定居的影响.
- 使用16S rDNA基因测序分析抗生素治疗后可培养细菌群体的组成.
- 确定急性和慢性抗生素暴露对成年 *N. vectensis* 的基因表达特征的影响.
主要方法:
- 在不同度下比较单个和联合的抗生素治疗 (安皮西林,链杆菌素,里芬素,新菌素).
- 在抗生素暴露后评估幼虫沉降时间.
- 16S rDNA amplicon 测序以表征持久的可培养细菌.
- 在短期和长期抗生素治疗后,对成年海进行基因表达分析 (包括基因本体学).
主要成果:
- 抗生素治疗,特别是联合治疗,在N. vectensis*中显著延迟了幼虫定居时间.
- 可培养的细菌,主要是Gammaproteobacteria (例如*Microbacterium*, *Vibrio*),尽管暴露于抗生素,但仍然存在.
- 急性抗生素暴露改变了与表观遗传机制和神经过程相关的基因;慢性暴露影响了陪伴者和线粒体基因,在发育和新陈代谢方面整体减弱.
结论:
- 在水生无脊椎动物中使用抗生素可能会导致幼虫定居的显著延迟,并改变基因表达,影响宿主生理.
- 治疗后各种可培养细菌的持久性表明微生物组发生了复杂的变化.
- 这些发现强调了考虑抗生素对海洋无脊椎动物,包括造礁珊瑚的非细菌影响的重要性.
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