解读Hat1在精子生成中的作用:染色体组织及其他方面
Shenni Peng1, Yulian Tang1, Ruiqun Lu1
1Youjiang Medical University for Nationalities, Baise, Guangxi, China.
PeerJ
|November 24, 2025
概括
研究了小鼠精子生成中的氨酸转移酶1 (Hat1) 表达和功能. 在男性生殖细胞发育过程中,Hat1在染色质组织,表观遗传调节和DNA修复中发挥着关键的特定阶段的作用,影响生育能力.
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.
- 分子生物学分子生物学
背景情况:
- 精子生成对男性生育能力至关重要,它依赖于由基因素乙转移酶 (HATs) 调节的染色质组织.
- 在小鼠精子发生过程中,氨酸转移酶1 (Hat1) 的特定表达模式和功能在很大程度上仍未被描述.
- 了解Hat1的作用对于阐明支配男性生殖细胞发育的表观遗传机制至关重要.
研究的目的:
- 为了研究小鼠精子生成过程中Hat1的时空表达.
- 确定参与染色体组织的Hat1相互作用蛋白.
- 阐明Hat1在男性生殖细胞发育和生育中的特定阶段的作用.
主要方法:
- 反转录定量聚合酶连锁反应 (RT-qPCR) 和西方斑块用于Hat1表达分析.
- 免疫光局部化以确定 Hat1 的细胞和亚细胞分布.
- 对单细胞测序数据 (GSE214315) 的生物信息学分析,以识别差异表达基因 (DEG) 和Hat1相互作用体.
- 功能性丰富分析,以预测 Hat1 在不同精子生成阶段的作用.
主要成果:
- 在成熟 (8周大) 和不成熟 (3周大) 的小鼠丸中,Hat1 mRNA和蛋白质水平显著上调.
- 哈特1在男性生殖细胞中表现出特定阶段的核定位,在精子和精子中最高,在初级精子细胞中中间,在二级精子细胞中最低.
- 生物信息学确定了246个与染色体组织相关的DEG和41个 Hat1相互作用蛋白,揭示了转录调节,表观遗传修饰,DNA修复和染色体重塑中的特定阶段功能.
结论:
- 哈特1在整个小鼠精子生成过程中显示出动态的,特定阶段的表达模式.
- 在男性生殖细胞发育过程中,Hat1在染色质组织,表观遗传调节和DNA修复中发挥着关键作用.
- 这些发现为精子生成的表观遗传调节提供了洞察力,并为男性生育研究提供了基础.
相关概念视频
Inheritance of Chromatin Structures
7.2K
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...
7.2K
Heterochromatin
17.8K
The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions that take up more dye are called heterochromatin. Heterochromatin is further classified into two forms – constitutive heterochromatin and facultative heterochromatin.
Constitutive heterochromatin: It is a highly compact region of chromatin that is mostly concentrated in the centromere and telomere. Unlike euchromatin, the amino acid at...
Constitutive heterochromatin: It is a highly compact region of chromatin that is mostly concentrated in the centromere and telomere. Unlike euchromatin, the amino acid at...
17.8K
Heterochromatin
4.6K
4.6K
Spreading of Chromatin Modifications
9.3K
The histone proteins in the nucleosomes are post-translationally modified (PTM) to increase or decrease access to DNA. The commonly observed PTMs are methylation, acetylation, phosphorylation, and ubiquitination of lysine amino acids in the histone H3 tail region. These histone modifications have specific meaning for the cell. Hence, they are called "histone code". The protein complex involved in histone modification is termed as "reader-writer" complex.
Writers
The writer...
Writers
The writer...
9.3K
Spermatogenesis
121.4K
Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male...
121.4K
Spermatogenesis
8.8K
Spermatogenesis is a complex process that involves the development of sperm cells from undifferentiated stem cells in the seminiferous tubules of the testes. The process is essential for the production of mature and functional sperm cells that are capable of fertilizing an egg.
The process of spermatogenesis can be divided into mitosis, meiosis, and spermiogenesis. During mitosis, the spermatogonia or stem cells divide to produce two identical daughter cells, type A and B spermatogonia. Type-A...
The process of spermatogenesis can be divided into mitosis, meiosis, and spermiogenesis. During mitosis, the spermatogonia or stem cells divide to produce two identical daughter cells, type A and B spermatogonia. Type-A...
8.8K


