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Related Concept Videos

Somatic to iPS Cell Reprogramming01:29

Somatic to iPS Cell Reprogramming

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Reprogramming alters the gene expression in somatic cells, transforming them into induced pluripotent stem (iPS) cells over several generations. Scientists can reprogram cells by introducing genes for four transcription factors—Oct4, Sox2, Klf4, and c-Myc (OSKM) by viral or non-viral methods. These factors are also known as Yamanaka factors after Shinya Yamanaka, who first generated iPS cells using mouse skin cells. Yamanaka was awarded the Nobel Prize in Physiology or Medicine in 2012...
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Combinatorial Gene Control02:33

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Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
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Chromatin Modification in iPS Cells01:32

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Chromatin modification alters gene expression; therefore, scientists can add histone-modifying enzymes, histone variants, and chromatin remodeling complexes to somatic cells to aid reprogramming into pluripotent stem (iPS) cells.
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...
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Methods of Nuclear Reprogramming01:24

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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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The cells of the blastocyst inner cell mass only remain pluripotent for a short time. This state of pluripotency and self-renewal can be maintained in embryonic stem (ES) cell culture by adding specific chemicals or growth factors to ensure the cells can continue dividing and later differentiate into different cell types. In some cases, the cells are grown on a feeder layer of differentiated cells, which provides the growth factors and extracellular matrix components necessary for stem cell...
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Induced Pluripotent Stem Cells01:13

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Stem cells are undifferentiated cells that divide and produce different types of cells. Ordinarily, cells that have differentiated into a specific cell type are post-mitotic—that is, they no longer divide. However, scientists have found a way to reprogram these mature cells so that they “de-differentiate” and return to an unspecialized, proliferative state. These cells are also pluripotent like embryonic stem cells—able to produce all cell types—and are therefore...
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Updated: May 6, 2026

Oct4GiP Reporter Assay to Study Genes that Regulate Mouse Embryonic Stem Cell Maintenance and Self-renewal
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OCT4: dynamic DNA binding pioneers stem cell pluripotency.

Stepan Jerabek1, Felipe Merino1, Hans Robert Schöler1

  • 1Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Röntgenstrasse 20, 48149 Münster, Germany.

Biochimica Et Biophysica Acta
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PubMed
Summary

Oct4, a key transcription factor, is essential for reprogramming somatic cells into induced pluripotent stem cells (iPSCs). Understanding Oct4

Keywords:
Cellular pluripotencyCombinatorial control of transcriptionCooperative DNA bindingOCT4 (POU5F1)POU familyPioneer transcription factor

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Area of Science:

  • Developmental Biology
  • Stem Cell Biology
  • Epigenetics

Background:

  • Oct4, a POU-family transcription factor, is crucial for early embryonic development and cellular pluripotency.
  • It is a key component of the reprogramming cocktail for generating induced pluripotent stem cells (iPSCs).
  • Oct4's unique role in iPSC generation cannot be substituted by other family members.

Purpose of the Study:

  • To provide an integrated review of Oct4 research, highlighting its diverse functional roles.
  • To discuss current progress in understanding the molecular mechanisms underlying Oct4's functions.
  • To emphasize the importance of Oct4 research for future regenerative medicine applications.

Main Methods:

  • Review of existing literature on Oct4's function in embryonic development and pluripotency.
  • Analysis of studies investigating Oct4's role in somatic cell reprogramming.
  • Examination of mechanistic studies elucidating Oct4's molecular interactions and gene regulation.

Main Results:

  • Oct4 is a master regulator of pluripotency induction and maintenance.
  • Its DNA-binding domains and interaction with other factors are critical for gene regulation.
  • Mechanistic studies are revealing how Oct4 establishes specific gene expression programs.

Conclusions:

  • A comprehensive understanding of Oct4's molecular mechanisms is vital for advancing iPSC technology.
  • Oct4's role extends beyond pluripotency to early differentiation stages.
  • Continued research into Oct4 will facilitate breakthroughs in regenerative medicine.