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Related Concept Videos

Spermatogenesis01:41

Spermatogenesis

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 reproductive...
Regulation of Expression Occurs at Multiple Steps02:24

Regulation of Expression Occurs at Multiple Steps

Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
Master Transcription Regulators02:23

Master Transcription Regulators

Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the addition of a...
Spermatogenesis01:22

Spermatogenesis

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...
Gene Regulation During Sporulation01:17

Gene Regulation During Sporulation

Sporulation is a complex developmental process that allows certain Gram-positive bacteria, such as Bacillus subtilis and Clostridium species, to survive extreme environmental conditions. This process is tightly regulated by a series of signaling cascades and transcriptional controls, ensuring the formation of a highly resistant endospore.Sporulation is triggered by unfavorable conditions, such as nutrient depletion, and is governed by a phosphorelay system. One of the sensor kinases, such as...

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Related Experiment Video

Updated: Jun 18, 2026

Step-specific Sorting of Mouse Spermatids by Flow Cytometry
06:31

Step-specific Sorting of Mouse Spermatids by Flow Cytometry

Published on: December 31, 2015

Gene regulation in spermatogenesis.

James A Maclean1, Miles F Wilkinson

  • 1Department of Immunology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, USA.

Current Topics in Developmental Biology
|December 14, 2005
PubMed
Summary

Mammalian spermatogenesis relies on hormone regulation and transcription factors for germ cell development. Understanding these mechanisms can lead to new male infertility treatments and contraceptives.

Area of Science:

  • Developmental Biology
  • Reproductive Biology
  • Genetics

Background:

  • Spermatogenesis is a complex, hormone-dependent process crucial for male fertility.
  • Cell type- and stage-specific transcription factors regulate key events in germ cell development.
  • Dysregulation of these processes can lead to male infertility.

Purpose of the Study:

  • To review the genetic regulatory mechanisms driving mammalian spermatogenesis.
  • To explore the roles of steroid hormones and transcription factors.
  • To discuss the achievement of testis-specific transcription.

Main Methods:

  • Review of existing literature on spermatogenesis regulation.
  • Analysis of steroid hormone mechanisms (direct gene activation, secondary responses, nonclassical events).

More Related Videos

A Seminiferous Tubule Squash Technique for the Cytological Analysis of Spermatogenesis Using the Mouse Model
09:40

A Seminiferous Tubule Squash Technique for the Cytological Analysis of Spermatogenesis Using the Mouse Model

Published on: February 6, 2018

Isolation of Murine Spermatogenic Cells using a Violet-Excited Cell-Permeable DNA Binding Dye
08:21

Isolation of Murine Spermatogenic Cells using a Violet-Excited Cell-Permeable DNA Binding Dye

Published on: January 14, 2021

Related Experiment Videos

Last Updated: Jun 18, 2026

Step-specific Sorting of Mouse Spermatids by Flow Cytometry
06:31

Step-specific Sorting of Mouse Spermatids by Flow Cytometry

Published on: December 31, 2015

A Seminiferous Tubule Squash Technique for the Cytological Analysis of Spermatogenesis Using the Mouse Model
09:40

A Seminiferous Tubule Squash Technique for the Cytological Analysis of Spermatogenesis Using the Mouse Model

Published on: February 6, 2018

Isolation of Murine Spermatogenic Cells using a Violet-Excited Cell-Permeable DNA Binding Dye
08:21

Isolation of Murine Spermatogenic Cells using a Violet-Excited Cell-Permeable DNA Binding Dye

Published on: January 14, 2021

  • Survey of transcription factor families (homeobox, zinc-finger, etc.) and their roles, including knockout mouse studies.
  • Discussion of DNA methylation's role in testis-specific gene silencing.

    • Main Results:

    • Steroid hormones (androgens, estrogens) regulate spermatogenesis via direct and indirect transcriptional pathways, as well as rapid nonclassical signaling.
    • Diverse transcription factors (e.g., homeobox, zinc-finger) are essential for specific stages of spermatogenesis.
    • Testis-specific transcription may involve mechanisms like DNA methylation influencing gene silencing in somatic tissues.

    Conclusions:

    • Hormonal and transcriptional regulation are central to mammalian spermatogenesis.
    • Further understanding of these genetic mechanisms offers potential for therapeutic interventions in male reproductive health.
    • Investigating testis-specific gene regulation, including DNA methylation, is key to understanding male fertility.