相关实验视频
Updated: May 30, 2025
08:45
Polygraphic Recording Procedure for Measuring Sleep in Mice
Published on: January 25, 2016
23.5K
黑色素对Wistar大鼠精子,下丘脑,前额皮质和小脑中的miRNA表达的影响
Mísia Helena da Silva Ferro1, Ingrid Morante1, Fernanda Akane Nishino2
1Laboratory of Developmental Biology, Department of Morphology and Genetics-Paulista Medicine School, Federal University of Sao Paulo (UNIFESP), Sao Paulo, SP, Brazil.
PloS one
|January 27, 2025
概括
缺少黑激素会增加大鼠精子中的微RNA,这可能会影响父系遗传. 黑色素治疗恢复了精子中正常的microRNA水平.
科学领域:
- 内分泌学 在内分泌学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 神经科学是一个神经科学.
背景情况:
- 黑色素是一种夜间激素,对各种生物过程至关重要.
- 精子将遗传和表观遗传信息,包括微RNA,传递给后代.
- 精子微RNAs影响胚胎发育,并且可以与遗传性疾病联系起来.
研究的目的:
- 为了研究黑激素缺失对小鼠精子和大脑中微RNA表达的影响.
- 评估松果腺在调节微RNA水平中的作用.
- 为了确定外源性黑激素是否可以逆转观察到的变化.
主要方法:
- 松切除术是在分娩后60天对Wistar大鼠进行的.
- 这些组包括经过松切除的老鼠 (有或没有接受黑色素治疗) 和对照组.
- 用RT-qPCR分析了精子,下丘脑,前额叶皮和小脑中的微RNA表达.
主要成果:
- 缺少氨酸显著增加了精子中特定的microRNA表达.
- 观察到大脑和小脑微RNA水平的变化,但没有统计学意义.
- 接受治疗的老鼠的精子中,黑氨酸的使用使microRNA水平正常化.
结论:
- 松切除术和缺乏黑色素改变了老鼠精子中的微RNA表达.
- 黑色素在调节精子中的microRNA水平方面发挥作用,这表明与父亲表观遗传的联系.
- 需要进一步的研究来了解对后代的长期后果.
相关概念视频
01:22MicroRNAs
3.0K
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
3.0K
02:19Circadian Rhythms and Gene Regulation
4.0K
The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...
4.0K