蛋白质稳定作为精子质量和男性生育能力的哨兵
Peter Sutovsky1,2, Natalie Zelenkova3,4, Pavla Postlerova4,5
1Division of Animal Sciences, University of Missouri, Columbia, MO, USA. sutovskyp@missouri.edu.
Advances in experimental medicine and biology
|April 29, 2025
概括
精子蛋白质平衡,即精子中的蛋白质平衡,反映了男性的整体生殖和一般健康状况. 这个概念为男性不孕症和相关慢性疾病提供了新的生物标志物.
科学领域:
- 男人生殖健康 男人生殖健康
- 精子发生是精子生成.
- 蛋白质组学是指蛋白质组学.
背景情况:
- 男性的生殖健康,包括精子数,越来越多地被认为是整体体质健康的指标.
- 精子数量减少与患癌症和心血管疾病等慢性疾病的风险更高有关.
- 变化的蛋白质稳定 (蛋白质合成和循环不平衡) 是各种疾病的常见因素,包括癌症和神经退行性疾病.
研究的目的:
- 引入细胞蛋白质稳定作为衡量精子完整性及其在男性不孕症中的作用.
- 探索遗传学,健康,生活方式和环境暴露等因素对精子蛋白质稳定性的影响.
- 突出特定蛋白质类型 (小分子修饰剂,精子血蛋白,相互作用,氧化还原蛋白) 在保持精子健康方面的重要性.
主要方法:
- 审查现有的文献和流行病学研究.
- 介绍了用于分析精子蛋白质稳定性的蛋白质学方法.
- 考虑人类男性不孕症和相关的动物模型,特别是食品动物.
主要成果:
- 细胞蛋白质稳定作为精子结构和功能完整性的生物标志物.
- 各种因素通过蛋白质静止机制影响精子生成和精子成熟.
- 特定的蛋白质类别对于精子结构,功能和防止氧化损伤至关重要.
结论:
- 精子的蛋白质稳定是男性生殖健康和整体福祉的关键指标.
- 精子蛋白质稳定性的蛋白质组分析可以帮助发现男性不孕症的生物标志物.
- 将精子蛋白质稳定研究与基因组学和现象学相结合,将促进人类和动物的生殖医学.
相关概念视频
Spermatogenesis
101.7K
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...
101.7K
Infertility in Males
153
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...
153
Testosterone: Functions and Regulation
348
The intricate hormonal interplay essential for male reproductive health begins with the release of gonadotropin-releasing hormone (GnRH) by the hypothalamus. This hormone prompts the pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). LH targets the Leydig cells in the testes, stimulating them to produce and release testosterone. In concert with testosterone, FSH acts on the Sertoli cells within the seminiferous tubules to facilitate the release of...
348
Sperm Structure and Semen Composition
622
During ejaculation, males release around 2-5 milliliters of semen, which is a complex mixture of mature sperm and various fluids produced by accessory glands. The mature sperm cells measure approximately 60 micrometers in length and consist of a head, neck, midpiece, and tail. The head is flattened and tapered, measuring about 4 to 5 micrometers in length. It contains a nucleus with condensed chromosomes and an acrosome, a cap-like structure filled with enzymes essential for penetrating the...
622
Sperm Transport
435
The journey of sperm from its origin to the point of ejaculation begins within the seminiferous tubules of the testis. Here, Sertoli cells produce fluid that propels non-motile sperm through a series of conduits, starting with the straight tubules leading to the rete testis. This interconnected network of tubules acts as the initial pathway for sperm, guiding them into the efferent ductules and then into the epididymis for maturation.
The maturation phase occurs in the epididymis, where sperm...
The maturation phase occurs in the epididymis, where sperm...
435
Testes: Histology
429
A tough, fibrous membrane, the tunica albuginea, covers the testes, extending inward to form fibrous partitions or septa, dividing them into internal compartments called lobules. Each lobule has 1 to 3 tightly coiled seminiferous tubules where sperm production occurs. These tubules merge into a tubular network at the back of the testis, known as the rete testis. It connects to 15 to 20 efferent ductules, leading to the epididymis.
The spermatogenic cells, responsible for producing sperm, are...
The spermatogenic cells, responsible for producing sperm, are...
429


