母胎杂交中的表观遗传机制:世代间和跨世代遗传
Veronica Tisato1,2,3, Elisabetta D'Aversa1, Francesca Salvatori1
1Department of Translational Medicine, University of Ferrara, Ferrara, Italy.
Epigenomics
|October 6, 2025
概括
表观遗传学将环境信号转化为可遗传的DNA变化,这对生殖健康至关重要. 了解这些表观遗传标记有助于解码母胎沟通,以成功怀孕和潜在的新疗法.
科学领域:
- 生殖生物学 生殖生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 遗传学 遗传学 是一个
背景情况:
- 表观遗传学作为一种通信系统,将环境线索转化为可遗传的DNA修饰.
- 表观遗传标记,包括DNA甲基化,基因组修饰和非编码RNA,在人类生殖发育过程中至关重要.
- DNA甲基转移酶 (DNMTs) 和十一转位 (TET) 酶通过改变DNA甲基化模式来调节基因表达.
研究的目的:
- 概述早期胚胎发育和怀孕建立期间表观遗传交叉的关键特征.
- 讨论由环境因素影响的表观遗传特征的世代间和跨世代遗传的可能性.
- 探索表观遗传学在个性化生殖医学中的未来翻译应用.
主要方法:
- 关于人类繁殖中的表观遗传机制的当前文献的综述.
- 在不同发育阶段对表观遗传标记 (DNA甲基化,基因组修饰,非编码RNA) 的分析.
- 讨论表观遗传修饰剂 (DNMTs,TET酶) 在基因调节中的作用.
主要成果:
- 表观遗传信号调解了成功建立怀孕的关键母胎沟通.
- 根据环境暴露,特定的表观遗传特征可能会在几代人之间被遗传.
- 表观遗传修饰是调节细胞生成,胚胎发育和怀孕期间基因表达的核心.
结论:
- 表观遗传交叉对母胎对话和成功怀孕至关重要.
- 环境对表观遗传学的影响可能具有跨代和跨代的影响.
- 基于表观遗传的疗法 (表观药物) 为未来的个性化生殖医学提供了希望.
相关概念视频
02:30Genomic Imprinting and Inheritance
36.8K
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...
36.8K
01:37Epigenetic Regulation
3.7K
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...
3.7K
01:46Epigenetic Regulation
33.5K
Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
33.5K
03:17Inheritance of Chromatin Structures
7.3K
Epigenetics is the study of inherited changes in a cell's phenotype without changing the DNA sequences. It provides a form of memory for the differential gene expression pattern to maintain cell lineage, position-effect variegation, dosage compensation, and maintenance of chromatin structures such as telomeres and centromeres. For example, the structure and location of the centromere on chromosomes are epigenetically inherited. Its functionality is not dictated or ensured by the underlying...
7.3K
02:59Animal Mitochondrial Genetics
9.0K
Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
9.0K
01:20Gene-Environment Interactions
1.1K
Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...
1.1K