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Related Concept Videos

Epigenetic Regulation01:46

Epigenetic Regulation

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Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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Epigenetic Regulation01:37

Epigenetic Regulation

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Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
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Nucleosome Remodeling02:54

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Nucleosomes are the basic units of chromatin compaction. Each nucleosome consists of the DNA bound tightly around a histone core, which makes the DNA inaccessible to DNA binding proteins such as DNA polymerase and RNA polymerase. Hence, the fundamental problem is to ensure access to DNA when appropriate, despite the compact and protective chromatin structure.
Nucleosome remodeling complex
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Master Transcription Regulators02:23

Master Transcription Regulators

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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...
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Transducer Mechanism: Nuclear Receptors01:31

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Nuclear receptors, or NRs, are unique transcription factors that regulate gene transcription and affect the cellular pathways involved in reproduction, development, or metabolism. Their ability to be stimulated by small lipophilic ligands and control vital cellular processes makes them ideal drug targets. Nearly 10-15% of currently prescribed drugs target these receptors.
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Methods of Nuclear Reprogramming01:24

Methods of Nuclear Reprogramming

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Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for...
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Related Experiment Video

Updated: Feb 25, 2026

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

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NRF1 coordinates with DNA methylation to regulate spermatogenesis.

Junpeng Wang1, Chao Tang1, Qian Wang1

  • 1Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China.

FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology
|July 30, 2017
PubMed
Summary
This summary is machine-generated.

Nuclear Respiratory Factor 1 (NRF1) works with DNA methylation to control germ cell genes. Loss of NRF1 in mice disrupts spermatogenesis, causing male infertility.

Keywords:
ASZ1germline gene regulationmitochondria

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Area of Science:

  • Reproductive Biology
  • Molecular Biology
  • Epigenetics

Background:

  • Spermatogenesis relies on precise gene regulation by transcription factors and epigenetic mechanisms.
  • Nuclear Respiratory Factor 1 (NRF1) is crucial for mitochondrial biogenesis and has emerging roles in gene regulation.

Purpose of the Study:

  • To investigate the role of NRF1 in spermatogenesis.
  • To explore the interplay between NRF1 and DNA methylation in germ cell development.

Main Methods:

  • Conditional ablation of NRF1 in mouse gonocytes.
  • Analysis of germ cell-specific gene expression (e.g., Asz1).
  • Assessment of germ cell proliferation and male fertility.

Main Results:

  • NRF1 collaborates with DNA methylation to regulate key germline genes, including Asz1.
  • NRF1 deficiency in gonocytes leads to down-regulation of these genes.
  • NRF1 ablation blocks germ cell proliferation and results in male infertility in mice.

Conclusions:

  • NRF1 plays a critical role in spermatogenesis through coordinated transcriptional and epigenetic regulation.
  • NRF1 is essential for maintaining germ cell development and male fertility.