冬季的假期吗? 过冬对树免疫基因表达的影响
Grace J Vaziri1, Noah M Reid2, Tracy A G Rittenhouse3
1University of Connecticut, Department of Ecology and Evolutionary Biology, Storrs, CT, 06269, USA.
概括
森林青在季节性过渡期间表现出动态的免疫基因表达. 冬眠后,免疫基因活动增加,这表明宿主防御寄生虫的关键时期.
科学领域:
- 生态生态学 生态生态学
- 免疫学 免疫学 免疫学
- 类学 类学 类学
背景情况:
- 冬眠在ectotherms降低生理速率,包括免疫力,在季节过渡期间可能增加对寄生虫的脆弱性.
- 随着温度的上升,寄生虫活动可能会比宿主免疫功能更快地反弹,从而产生热不匹配.
- 了解季节性变化期间宿主免疫调节对于识别这些漏洞至关重要.
研究的目的:
- 调查木 (Lithobates sylvaticus) 在过渡进入和退出寒冷季节期间免疫基因表达的变化.
- 为了确定木在整个寒冷的季节是否经历了寄生.
- 为了比较脏和皮肤组织的免疫反应,并评估线虫感染的影响.
主要方法:
- 测量不同季节 (秋季,冬季,冬眠后) 森林青的脏和皮肤组织中的免疫基因表达.
- 分析差异表达的基因,以丰富免疫系统过程.
- 识别整个寒冷季节在青中存在的线虫物种.
主要成果:
- 免疫基因表达从秋季到冬季下降,在冬眠期间保持稳定,并在出现后增加.
- 脏组织显示,与皮肤组织相比,免疫和适应性免疫过程的丰富性更大.
- 尼马虫肺感染与脏免疫基因表达增加有关.
结论:
- 寒冷的季节是免疫力学动态的,而不是冬眠ectotherms生理停滞的时期.
- 冬眠后的时期对于宿主来说至关重要,以投资免疫功能.
- 季节性过渡代表了宿主寄生虫相互作用和潜在的免疫脆弱性的关键时期.
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