连续哺乳期间小鼠乳腺组织的DNA甲基化和基因表达变化:第一部分 - 炎症的影响
E Ivanova1, C Hue-Beauvais1, A Chaulot-Talmon2,3
1Université Paris-Saclay, INRAE, AgroParistech, GABI, France.
Epigenetics
|June 11, 2023
概括
炎症影响乳腺DNA甲基化和基因表达不同,根据哺乳期数和先前的炎症史. 了解这些表观遗传变化对于乳腺健康至关重要.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 哺乳动物哺乳生物学的生物学
- 免疫学 免疫学 免疫学
背景情况:
- 乳腺炎显著影响母乳养和牲畜经济.
- 炎症对乳腺表观遗传学的确切影响尚不清楚.
- 基因甲基化变化是基因表达的关键调节者.
研究的目的:
- 为了研究DNA甲基化和基因表达变化的小鼠乳腺组织在脂多糖诱导的炎症后.
- 为了比较这些表观遗传变化在不同的哺乳阶段和炎症史.
- 阐明哺乳期排名和炎症史在乳腺表观遗传调节中的作用.
主要方法:
- 脂聚糖 (LPS) 诱导了小鼠乳腺组织的炎症.
- 减少表示双硫酸盐测序 (RRBS) 用于DNA甲基化分析.
- 实时定量聚合酶链反应 (RT-qPCR) 用于对差异表达基因 (DEGs) 的基因表达分析.
主要成果:
- 在三个实验条件下确定了差异甲基化细胞因子 (DMC),差异甲基化区域 (DMR) 和DEG.
- 在所有比较中,观察到很少有共享的DMC和只有一个共享的DMR,这表明了特定条件的表观遗传反应.
- 炎症史显著改变了表观遗传模式,特别是在第二次哺乳期,这表明先前暴露的作用.
结论:
- 哺乳期排名和先前的炎症史是乳腺组织基因表达和DNA甲基化变化的关键决定因素.
- 炎症的表观遗传影响是复杂的,受动物的生理状态和过去暴露的影响.
- 这些发现提供了关于乳腺性和易受炎症侮辱的脆弱性的见解.
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