在草原中对结合的表观遗传衰老研究
Lindsay L Sailer1, Amin Haghani2, Joseph A Zoller3
1Department of Psychology, Cornell University, Ithaca, NY, 14853, USA.
Scientific reports
|July 29, 2024
概括
研究人员开发了精确的表观遗传衰老时钟为草原,发现对结合不会改变衰老速度. 这项研究确定了与配对结合相关的基因,为一夫一妻制和衰老提供了洞察力.
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.
- 衰老研究研究 衰老研究
- 行为生物学 行为生物学
背景情况:
- 浪漫关系的质量与衰老的健康结果有关.
- DNA甲基化模式作为精确的生物标志物用于估计时间年龄.
- 对各种物种而言,已经开发出了表观遗传衰老钟.
研究的目的:
- 为草原 (Microtus ochrogaster) 开发基于DNA甲基化的精确表观遗传衰老钟.
- 为了研究对夫妇结合对草原的表观遗传衰老的影响.
- 为了识别与对结合行为的遗传关联.
主要方法:
- 开发高度保守的基于CpG的哺乳动物表观遗传衰老钟.
- 创建一个双物种人类-鸟类钟来评估跨物种的保护.
- 对不同组织 (血液,耳朵,肝脏,大脑) 的表观遗传衰老的分析,对结合和无性别的小鸟.
- 全表观基因组协会研究,以确定与对结合相关的CpG.
主要成果:
- 高精度的表观遗传衰老钟被开发用于草原.
- 一个双物种人-飞的时钟证明了保留的表观遗传衰老效应.
- 没有发现任何组织中因对结合而加速或减缓表观遗传衰老的显著证据.
- 五个基因 (Foxp4,Phf2,Mms22l,Foxb1,Eif1ad) 的CPG与对结合有很强的关联.
- 性素和双结合的小没有表现出表观遗传衰老的差异.
结论:
- 基于DNA甲基化的精确年龄估计器是为草原小鸟创建的,这是研究动物一夫一妻制的模型.
- 草原小鸟中的对结合似乎没有影响表观遗传衰老的速度.
- 特定的基因被确定为可能在表观遗传调节对结合行为中发挥作用.
相关概念视频
03:09Meiosis I
40.3K
Meiosis is the division of a diploid cell into haploid cells forming sperm and eggs in animals through differentiation. Meiosis I is the first stage of meiosis, where the genetic recombination of homologous chromosomes and the reduction of the ploidy level by half occurs.
Prophase I is the most extended and complex step of meiosis I characterized by synapsis, chromosome pairing, and recombination of the homologous chromosomes. This process is facilitated by a proteinaceous structure called the...
Prophase I is the most extended and complex step of meiosis I characterized by synapsis, chromosome pairing, and recombination of the homologous chromosomes. This process is facilitated by a proteinaceous structure called the...
40.3K
01:21Nondisjunction
3.8K
Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate correctly and move to the opposite poles of the cells. This produces daughter cells with abnormal chromosome numbers. Nondisjunction is common during anaphase I or anaphase II of meiosis. Mutations in synaptonemal complex proteins that attach homologous chromosomes increase the chances of nondisjunction in anaphase I of meiosis I. In contrast, mutations in topoisomerases and condensins that hold...
3.8K
02:27Background and Environment Affect Phenotype
6.5K
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
6.5K