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相关概念视频

Sperm Transport01:15

Sperm Transport

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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...
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Spermatogenesis01:41

Spermatogenesis

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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...
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Microtubule Associated Motor Proteins01:32

Microtubule Associated Motor Proteins

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Eukaryotic cells have different motor proteins for transporting various cargo within the cell. These motor proteins differ based on the filament they associate with, the direction they move within the cell, and the type of cargo they transport. Motor proteins that associate with microtubules are known as microtubule-associated motor proteins. There are two families of microtubule-associated motor proteins —Kinesins and Dyneins. Both these proteins assist in the transport of cellular...
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Testes: Histology01:27

Testes: Histology

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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...
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Role of Myosin in Cell Migration01:18

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Myosins are multimeric motor proteins involved in various cellular processes such as migration, adhesion, and proliferation. Myosin II is the most common type in animal cells, which binds and cross-links actin filaments.
Myosin II  is a hexamer comprising two heavy chains with globular heads and coiled-coil tails, two regulatory light chains, and two essential light chains. The ATPase sites on the myosin heads hydrolyze ATP, and the released phosphate generates the force for contraction....
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Mechanical Protein Functions01:58

Mechanical Protein Functions

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Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical forces and proteins that are subjected to mechanical forces. Proteins providing mechanical support to the structure of the cell, such as keratin, are subjected to mechanical force, whereas proteins involved in cell movement and transport of molecules across cell membranes, such as an ion pump, are examples of generating mechanical force. 
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相关实验视频

Updated: Jun 22, 2025

Step-specific Sorting of Mouse Spermatids by Flow Cytometry
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运动蛋白,精子发生和丸功能.

Lingling Wang1, Tiao Bu2, Xiaolong Wu2

  • 1The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, P.R. China; Department of Urology and Andrology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, P.R. China.

Advances in protein chemistry and structural biology
|July 3, 2024
PubMed
概括
此摘要是机器生成的。

运动蛋白对于细胞运输和男性生育能力至关重要. 这篇评论探讨了它们在精子生成中的作用,并提出了通过血丸屏障传输生殖细胞的模型.

关键词:
动氨酸细胞骨 动氨酸细胞骨微管的细胞骨架是微管细胞骨架.运动蛋白质 运动蛋白质塞尔托利细胞是Sertoli细胞.精子发生是精子生成.精子发生是精子生成.测试 (Testis) 是一个测试.

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Functional Assessment of Kinesin-7 CENP-E in Spermatocytes Using In Vivo Inhibition, Immunofluorescence and Flow Cytometry
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相关实验视频

Last Updated: Jun 22, 2025

Step-specific Sorting of Mouse Spermatids by Flow Cytometry
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Step-specific Sorting of Mouse Spermatids by Flow Cytometry

Published on: December 31, 2015

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Cytological Analysis of Spermatogenesis: Live and Fixed Preparations of Drosophila Testes
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Functional Assessment of Kinesin-7 CENP-E in Spermatocytes Using In Vivo Inhibition, Immunofluorescence and Flow Cytometry
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科学领域:

  • 细胞生物学 细胞生物学
  • 生殖生物学 生殖生物学
  • 分子生物学分子生物学

背景情况:

  • 运动蛋白促进哺乳动物细胞中的细胞内运输.
  • 运动蛋白对于精子生成至关重要,基因缺失导致不孕.
  • 运动蛋白基因的突变会影响男性生育能力和人类发育.

研究的目的:

  • 总结关于微管和actin依赖的运动蛋白的发现.
  • 探索运动蛋白在丸内生殖细胞运输中的较少知名作用.
  • 提出一种在精子生成过程中以运动蛋白为媒介的生殖细胞运输的假设模型.

主要方法:

  • 关于运动蛋白和细胞骨功能现有文献的综述.
  • 对最近关于运动蛋白参与精子生成的研究结果的分析.
  • 开发一种假设的模型,用于通过血液-丸屏障和精卵上皮的生殖细胞运输.

主要成果:

  • 运动蛋白利用极化细胞骨 (微管和动蛋白) 进行定向的货物运输.
  • 一个假设模型说明了在精子生成周期期间生殖细胞迁移中的运动蛋白功能.
  • 在了解运动蛋白在生殖细胞运输和血液丸屏障中的作用方面仍然存在重大差距.

结论:

  • 运动蛋白对于精子生成和男性生育能力至关重要.
  • 需要进一步的研究来阐明运动蛋白介导的胚胎细胞传输的具体机制.
  • 了解这些机制可以弥合有关生育和发育缺陷的知识差距.