相关实验视频
Updated: May 5, 2026
10:43
Dissection of Larval Zebrafish Gonadal Tissue
Published on: April 26, 2017
10.3K
在缺乏功能性rln3b基因的雄性鱼中出现性性性性
Qinglei Xu1, Maolin Ye2, Yun Su2
1Fisheries Engineering Institute, Chinese Academy of Fishery Sciences, Beijing 100141, China.
International journal of biological macromolecules
|May 10, 2024
概括
放松素3b (Rln3b) 对于雄性鱼的生育能力至关重要. 缺少它会损害精子生产,丸结构和生殖激素调节,突出显示Rln3b在男性生殖健康中的关键作用.
科学领域:
- 生殖生物学 生殖生物学
- 内分泌学 在内分泌学.
- 遗传学 是一个遗传学.
背景情况:
- 放松素3 (RLN3) 是一种神经,对哺乳动物的生殖功能至关重要.
- 众所周知,RLN3a对雄性鱼的繁殖很重要.
- 其对应物RLN3b在男性生育能力中的作用仍然不太清楚.
研究的目的:
- 为了研究rln3b基因在尼罗河鱼的男性生育能力中的功能.
- 阐明RLN3b在精子生成和生殖健康中的作用背后的分子机制.
主要方法:
- 一个同卵性rln3b突变体 (rln3b-/-) 尼罗河鱼系的生成.
- 评估丸结构,精子数和运动能力.
- 道测定用于检测亡.
- 与类固醇发生有关的基因表达的RT-qPCR分析,生殖细胞标记物,淋巴体细胞和下垂体-垂体-淋巴体 (HPG) 轴.
主要成果:
- Rln3b突变导致精子生成延迟和丸结构异常.
- 在rln3b-/-突变体中,精子数量,运动能力和总体雄性鱼的生育能力显著降低.
- 在突变鱼的丸中观察到亡.
- 发现了类固醇基因 (例如,cyp17a1,cyp11b2),生殖细胞标记物 (Vasa) 和淋巴体细胞标记物 (amh, amhr2) 的下调.
- 与HPG轴相关的基因被下调,而多巴胺合成酶基因表达在突变鱼中被上调.
结论:
- Rln3b在调节雄性鱼生育方面发挥着至关重要的作用.
- rln3b基因影响精子生成,丸结构和精子质量.
- Rln3b可能通过调节HPG轴和相关基因表达,包括类固醇生成和多巴胺合成来发挥其作用.
相关概念视频
02:41Lethal Alleles
11.4K
Agouti: A Lethal Allele
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
11.4K
01:23Infertility in Males
668
Male infertility affects millions of couples worldwide, arising from various factors that impact different stages of the reproductive process. An endocrine imbalance resulting from conditions like hypogonadism, Klinefelter syndrome, or pituitary disorders can disrupt hormone levels and reduce sperm production. Testicular defects, such as tumors, cryptorchidism, atrophic testes, abnormal sperm morphology, and low sperm count or motility, may arise due to genetic factors, structural...
668