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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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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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Introduction to Nuclear Reprogramming01:14

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Nuclear reprogramming is the process of switching gene expression of one cell type to that of another cell type, usually from a differentiated cell state to an undifferentiated cell state. Differentiation occurs during processes such as development and morphogenesis, tissue regeneration, and malignancy. Cells can also be artificially induced to reprogram their gene expression by techniques such as nuclear transfer, induced pluripotency, and cell fusion. Such techniques have many applications in...
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Stem Cell Therapy for Tissue Regeneration01:21

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Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
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Chromatin Modification in iPS Cells01:32

Chromatin Modification in iPS Cells

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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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Induced Pluripotent Stem Cells01:06

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Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
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Related Experiment Video

Updated: Dec 28, 2025

RNA-based Reprogramming of Human Primary Fibroblasts into Induced Pluripotent Stem Cells
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Small-molecule-mediated reprogramming: a silver lining for regenerative medicine.

Yohan Kim1,2, Jaemin Jeong1,2, Dongho Choi3,4

  • 1Department of Surgery, Hanyang University College of Medicine, Seoul, 04763, Korea.

Experimental & Molecular Medicine
|February 22, 2020
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Summary
This summary is machine-generated.

Researchers are exploring safer methods for cell reprogramming, moving beyond viral vectors. Small molecules and growth factors offer promising alternatives for applications like disease modeling and cell therapy.

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Area of Science:

  • Biotechnology
  • Stem Cell Biology
  • Regenerative Medicine

Background:

  • Somatic cell reprogramming offers potential for drug screening, disease modeling, artificial organs, and cell therapy.
  • Induced pluripotent stem cells (iPSCs) were initially generated using viral transduction of four factors (OCT3/4, SOX2, c-MYC, and KLF4).
  • Viral methods carry risks of DNA integration and oncogene complications.

Purpose of the Study:

  • To review current research trends in cell reprogramming using small molecules and growth factors.
  • To explore the mechanisms of action for these alternative reprogramming methods.

Main Methods:

  • Review of scientific literature on small molecule and growth factor-mediated cell reprogramming.
  • Analysis of reported reprogramming efficiencies and safety profiles.

Main Results:

  • Small molecules and growth factors are emerging as clinically applicable alternatives to viral reprogramming.
  • These methods aim to mitigate the risks associated with viral vector integration and oncogene activation.
  • Research is focused on understanding the precise molecular pathways targeted by small molecules and growth factors.

Conclusions:

  • Small molecule and growth factor-based reprogramming represent a significant advancement in cell reprogramming technology.
  • These approaches hold promise for safer and more efficient applications in regenerative medicine and disease research.
  • Further investigation into their modes of action will optimize their therapeutic potential.