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Related Concept Videos

Spermatogenesis01:41

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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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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.
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Meiosis is the process by which diploid cells divide to produce haploid daughter cells. In humans, each diploid cell contains 46 chromosomes, half from the mother and half from the father. Following meiosis, the resulting haploid eggs or sperm only contain 23 chromosomes; however, each of these chromosomes contains a unique combination of parental information that results from the meiotic process of crossing over.
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A Standardized Approach for Multispecies Purification of Mammalian Male Germ Cells by Mechanical Tissue Dissociation and Flow Cytometry
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Spermatogonial cells: mouse, monkey and man comparison.

Carla Boitani1, Sara Di Persio1, Valentina Esposito1

  • 1Fondazione Pasteur Cenci Bolognetti and Department of Anatomical, Histological, Forensic and Orthopedic Sciences-Section of Histology and Medical Embryology, Sapienza University of Rome, Via Antonio Scarpa, 14, 00161 Rome, Italy.

Seminars in Cell & Developmental Biology
|March 10, 2016
PubMed
Summary

Spermatogonia, the stem cells of sperm production, must balance self-renewal and differentiation. This review explores spermatogonial biology, amplification kinetics, and differentiation signals in mammals, comparing rodents and primates.

Keywords:
HumanMouseNon-human primatesSpermatogoniaSpermatogonial stem cell nicheSpermatogonial stem cells

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Area of Science:

  • Reproductive Biology
  • Cell Biology
  • Developmental Biology

Background:

  • Spermatogonia form the mitotic compartment essential for spermatogenesis in mammals.
  • The precise nature and regulation of spermatogonial stem cells remain areas of active research.
  • Maintaining a balance between stem cell self-renewal and differentiation is crucial for steady-state spermatogenesis.

Purpose of the Study:

  • To review current knowledge on spermatogonial biology.
  • To elucidate the kinetics of spermatogonial amplification.
  • To identify signals that direct spermatogonial differentiation.

Main Methods:

  • Literature review focusing on mammalian spermatogenesis.
  • Comparative analysis of spermatogonial behavior in rodents and primates (non-human and human).

Main Results:

  • Spermatogonia encompass stem, undifferentiated, and differentiating cell types with unique characteristics.
  • The review synthesizes current understanding of spermatogonial stem cell regulation and function.
  • Key similarities and differences in spermatogonial biology between rodents and primates are highlighted.

Conclusions:

  • Spermatogonial biology is fundamental to male fertility.
  • Understanding spermatogonial kinetics and differentiation signals is vital for reproductive health research.
  • Comparative studies in mammals offer insights into conserved and divergent mechanisms of spermatogenesis.