母亲在出生时接受的催产素治疗会增加男性后代的表观遗传年龄
Joshua S Danoff1,2, C Sue Carter1,3, Juozas Gordevičius4
1Department of Psychology, University of Virginia, Charlottesville, VA.
Developmental psychobiology
|March 27, 2024
概括
在草原小鸟中,围产期的催产素暴露加速了表观遗传衰老,改变了大脑中的基因表达. 这表明催产素在出生时对后代的发育和行为产生长期的表观遗传后果.
科学领域:
- 神经科学是一个神经科学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 发育生物学 发展生物学
背景情况:
- 外源性催产素 (OT) 通常用于诱导分娩,但其对后代发育的影响尚未完全理解.
- 在动物模型中,母亲的催产素给药与后代的长期行为变化有关,特别是影响社会性.
研究的目的:
- 调查草原野鸟中围产期催产素暴露的表观遗传和转录基因后果.
- 为了确定母体的催产素给药是否会影响后代的表观遗传年龄和基因表达模式.
主要方法:
- 在孕期晚期,草原小鸟接受了催产素注射.
- 在断奶后代中分析了表观遗传年龄,DNA甲基化模式 (CpG位),基因表达 (RNA测序) 和替代拼接.
- 分析的重点是核,这是一个对社会行为至关重要的大脑区域.
主要成果:
- 与对照组相比,暴露于催产素的后代表现出加速表观遗传衰老.
- 观察到DNA甲基化发生显著变化,不同甲基化部位富含与基因表达调节和神经发育相关的基因.
- RNA测序揭示了暴露动物核中差异性基因表达和广泛的替代拼接.
结论:
- 周产期的催产素暴露会导致后代大脑的长期表观遗传修饰和转录基因变化.
- 这些发现凸显了母体服用催产素对神经发育和行为的长期影响的潜力.
- 需要进一步的研究来探索氧化在整个生命周期中对发育的影响的全部范围.
更多相关视频
09:12Assessing Cellular Stress and Inflammation in Discrete Oxytocin-secreting Brain Nuclei in the Neonatal Rat Before and After First Colostrum Feeding
Published on: November 14, 2018
7.9K
09:09Generating a Reproducible Model of Mid-Gestational Maternal Immune Activation using PolyI:C to Study Susceptibility and Resilience in Offspring
Published on: August 17, 2022
1.6K
相关概念视频
Genomic Imprinting and Inheritance
34.4K
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
34.4K
Oogenesis
63.7K
In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
63.7K
Epigenetic Regulation
3.0K
Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
X-chromosome...
3.0K
