牛CYP21A2及其在上腺和卵巢组织中的假基因的转录模式
Jakub Wozniak1, Monika Stachowiak1, Marek Switonski1
1Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637 Poznan, Poland.
Genes
|November 27, 2025
概括
这项研究揭示了牛卵巢和上腺体中细胞染色体P450 21-基酶 (CYP21A2) 变体的组织特异表达. 它还提供了CYP21A1P假基因的转录的证据,表明牛类类固醇发生的复杂基因调节.
科学领域:
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
- 兽医科学 兽医科学 兽医科学
背景情况:
- 细胞染色体P450家族21亚家族A成员2基因 (CYP21A2) 对上腺类固醇生物合成至关重要.
- 关于像牛这样的家禽中的CYP21A2转录多样性和组织特异性表达的知识有限.
- 牛中CYP21A2伪基 (CYP21A1P) 的转录活性在很大程度上没有特征.
研究的目的:
- 描述CYP21A2转录在牛上腺和卵巢中的特征.
- 为了研究CYP21A2转录变异的组织特异性表达模式.
- 评估牛群中CYP21A1P假基因的潜在转录活性.
主要方法:
- 半定量PCR和桑格测序用于分析12只健康奶牛的上腺和卵巢组织中的CYP21A2转录.
- 实时PCR被用来量化表达水平,融化曲线分析和电泳验证不同的转录变异.
- 扩展的amplicons的测序确定了与参考序列和潜在的伪基因产品相对应的转录.
主要成果:
- 牛上腺一直表达一种单一的CYP21A2转录变体 (NM_001013596.1).
- 卵巢表现出两个变体:NM_001013596.1和XM_024983378.2,其中NM_001013596.1更为丰富.
- 桑格测序检测到与CYP21A2参考相匹配的转录和具有CYP21A1P伪基基因的较长产品,证实了其转录.
结论:
- 这项研究提供了第一份关于牛中CYP21A2转录变异的组织特异表达和差异丰度的证据.
- 这些发现表明,牛群中CYP21A1P假基因的转录活性.
- 这些结果突显了CYP21A2在牛类类固醇原生组织中的表达的复杂性,并表明了变体的调节作用.
相关概念视频
01:31Hormones of the Adrenal Glands
4.4K
Adrenal hormones play a pivotal role in maintaining the body's electrolyte balance and orchestrating responses to stress, showcasing the intricate functions of the adrenal cortex and medulla.
The adrenal cortex, a powerhouse of hormone synthesis, generates over two dozen corticosteroid hormones. The zona glomerulosa produces mineralocorticoids, exemplified by aldosterone, influencing the electrolyte composition of body fluids. The synthesis of glucocorticoids such as cortisol and...
The adrenal cortex, a powerhouse of hormone synthesis, generates over two dozen corticosteroid hormones. The zona glomerulosa produces mineralocorticoids, exemplified by aldosterone, influencing the electrolyte composition of body fluids. The synthesis of glucocorticoids such as cortisol and...
4.4K
01:58Cell Specific Gene Expression
16.2K
Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
16.2K
01:58Cell Specific Gene Expression
5.4K
5.4K
02:02Cis-regulatory Sequences
4.0K
4.0K
01:24Gonadal and Placental Hormones
2.7K
The gonads, namely the testes in males and the ovaries in females, are pivotal in producing gonadal hormones that orchestrate the intricate processes of sexual development and reproduction.
In males, testosterone is the primary gonadal androgen. It plays a central role in the maturation of male reproductive organs — the penis and testes. Additionally, testosterone is instrumental in the development of secondary sexual characteristics — a deep voice as well as facial and pubic hair...
In males, testosterone is the primary gonadal androgen. It plays a central role in the maturation of male reproductive organs — the penis and testes. Additionally, testosterone is instrumental in the development of secondary sexual characteristics — a deep voice as well as facial and pubic hair...
2.7K
02:28Leaky Scanning
5.6K
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...
5.6K