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Introduction to Nuclear Reprogramming

Introduction to Nuclear Reprogramming

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...

Methods of Nuclear Reprogramming

Methods of Nuclear Reprogramming

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 injury repair.

Somatic to iPS Cell Reprogramming

Somatic to iPS Cell Reprogramming

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 for this...

Chromatin Modification in iPS Cells

Chromatin Modification in iPS Cells

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...

X-Inactivation

X-Inactivation

The human X chromosome contains over ten times the number of genes as in the Y chromosome. Since males have only one X chromosome, and females have two, one might expect females to produce twice as many of the proteins, with undesirable results.

X-inactivation

X-inactivation

The human X chromosome contains over ten times the number of genes as in the Y chromosome. Since males have only one X chromosome, and females have two, one might expect females to produce twice as many of the proteins, with undesirable results.

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Related Experiment Video

Updated: Jul 6, 2026

Cell Surface Marker Mediated Purification of iPS Cell Intermediates from a Reprogrammable Mouse Model

Cell Surface Marker Mediated Purification of iPS Cell Intermediates from a Reprogrammable Mouse Model

Published on: September 6, 2014

Illuminating the black box of reprogramming.

Rupa Sridharan¹, Kathrin Plath

¹Department of Biological Chemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA.

|April 10, 2008

Summary

Scientists generated induced pluripotent stem (iPS) cells from liver and stomach cells. This finding shows that reprogramming is not limited to specific cell types and offers insights into the mechanism of cell reprogramming.

Area of Science:

Stem cell biology
Cellular reprogramming

Background:

Induced pluripotent stem (iPS) cells offer a powerful tool for regenerative medicine and disease modeling.
Previous research demonstrated the generation of iPS cells from various somatic cell types.

Discussion:

This study demonstrates the successful generation of iPS cells from previously unexplored cell sources: liver and stomach cells.
The findings challenge the notion that reprogramming efficiency is strictly dependent on the cell type of origin.

Key Insights:

Transcription factor-mediated reprogramming is a versatile process applicable beyond established cell types.
Successful reprogramming of liver and stomach cells expands the potential applications of iPS cell technology.

Outlook:

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Last Updated: Jul 6, 2026

Cell Surface Marker Mediated Purification of iPS Cell Intermediates from a Reprogrammable Mouse Model

Cell Surface Marker Mediated Purification of iPS Cell Intermediates from a Reprogrammable Mouse Model

Published on: September 6, 2014

Kinetic Measurement and Real Time Visualization of Somatic Reprogramming

Kinetic Measurement and Real Time Visualization of Somatic Reprogramming

Published on: July 30, 2016

Live Imaging Followed by Single Cell Tracking to Monitor Cell Biology and the Lineage Progression of Multiple Neural Populations

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Further research can explore reprogramming in a wider range of differentiated cells.
These insights pave the way for novel therapeutic strategies utilizing patient-specific iPS cells.