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两种平鱼物种之间肝转录组水平的差异,以应对肝癌和环境污染水平

Tuul Sepp¹, Ciara Baines², Randel Kreitsberg¹

¹Institute of Ecology and Earth Sciences, University of Tartu, Liivi 2, 50409 Tartu, Estonia.

Comparative biochemistry and physiology. Toxicology & pharmacology : CBP

|November 3, 2023

概括

污染水域的野生鱼表现出天然的抗癌性. 与大相比,大表现出增强的污染物代谢和瘤抑制,这表明它们是对环境毒素的进化适应.

科学领域:

环境毒理学环境毒理学
生态生态学生态生态学
癌症研究癌症研究

背景情况:

环境污染可以诱导野生动物和人类的癌症.
污染息地为研究自然癌症防御机制提供了独特的机会.
波罗的海和北海的平鱼暴露在高水平的污染物中,导致肝癌.

研究的目的:

为了研究 (Platichthys flesus) 和 (Limanda limanda) 之间癌症防御机制的特定物种差异.
鉴定暴露于污染的平鱼对抗癌症的基因和生理机制.
了解遗传变异和自然选择在适应致癌物质方面的作用.

主要方法:

对30种平鱼的基因表达分析 (转录组).
健康和癌症鱼类之间的基因表达模式的比较.
分析来自清洁和污染场所的非致癌鱼类.

主要成果:

与dabs相比,flounders显示了与增强污染物代谢和肝脏组织中瘤抑制相关的转录组变化.
鱼的癌症发展需要抑制遗传防御机制,这在鱼中不那么明显.
观察到对污染诱导的癌症的脆弱性和防御机制的特定物种差异.

结论:

在受污染的环境中,鱼可能具有更强的抗癌性自然选择.
野生物种为了解自然癌症防御的演变提供了有价值的模型.
环境污染可以无意中推动癌症性的演变.

关键词:

癌症的防御机制癌症的防御机制鱼类癌症鱼类癌症肝癌是一种肝癌.污染引起的癌症.转录组转录组就是一个转录组.野生动物癌症遗传学野生动物癌症遗传学癌症的演化癌症的演化

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