相关实验视频
Updated: Jun 18, 2026

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RiboTag Immunoprecipitation in the Germ Cells of the Male Mouse
Published on: March 4, 2020
PAN2 维护mRNA poly(A) 尾部稳态,并调节小鼠精子发生过程中的翻译
Xuan Wu1, Yu-Ke Wu1, Meng-Yan Jia1
1Life Sciences Institute, Zhejiang Key Laboratory of Precise Protection and Promotion of Fertility, Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.
Nature communications
|February 19, 2026
概括
PAN2酶对男性生育能力至关重要,因为它缺少会导致精子发育停止. 丢失 PAN2 干扰 mRNA 聚A 尾部调节,影响翻译效率和精子分化.
科学领域:
- 分子生物学分子生物学
- 生殖生物学 生殖生物学
- 遗传学 是一个遗传学.
背景情况:
- 多基化和死化是真核生物中关键的mRNA调节过程.
- PAN2-PAN3和CCR4-NOT是主要的死亡酶复合体,但PAN2在哺乳动物中的体内作用尚不清楚.
研究的目的:
- 为了研究PAN2酶在哺乳动物精子生成中的体内功能.
- 阐明由Pan2缺乏引起的男性不孕不育的分子机制.
主要方法:
- 在小鼠中,Pan2的生殖系特异性删除.
- PAIso-seq2和质谱测量用于多尾和蛋白质组分析.
- 利博-莱特和共免疫沉 (IP-MS) 来评估翻译和蛋白质相互作用.
主要成果:
- Pan2 删除导致男性不育,原因是8/9.9 步骤中的精子发生停止.
- 在Pan2-null圆精子体中破坏了特定阶段的poly(A) 尾部重塑和降低了翻译效率.
- PAN2与PABPC1和翻译启动因子相互作用;在失去Pan2时,它们的水平会下降.
结论:
- PAN2在精子发生过程中起着至关重要的生理作用.
- 在精子发育过程中,PAN2对于保持翻译机制稳定性和有效的mRNA处理至关重要.
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Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
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Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a cap to the 5' end of the growing transcript. In this process, a 5' phosphate is replaced by modified guanosine that has a methyl group attached (7-methyl guanosine). This 5' cap helps the cell...
mRNA Stability and Gene Expression
The structure and stability of mRNA molecules regulates gene expression, as mRNAs are a key step in the pathway from gene to protein. In eukaryotes, the half-life of mRNA varies from a few minutes up to several days. mRNA stability is essential in growth and development. The absence of the proteins regulating its stability, such as tristetraprolin in mice, can cause systemic issues, including bone marrow overgrowth, inflammation, and autoimmunity.
Cis-acting Elements involved in mRNA stability
Cis-acting Elements involved in mRNA stability

