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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.

Genomic Imprinting and Inheritance

Genomic Imprinting and Inheritance

Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...

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...

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...

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...

Epigenetic Regulation

Epigenetic Regulation

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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Immunostaining for DNA Modifications: Computational Analysis of Confocal Images

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Imprinting: DNA methyltransferases illuminate reprogramming.

Joseph P Calarco¹, Robert A Martienssen

¹Watson School of Biological Sciences, Cold Spring Harbor Laboratory, Cold Spring Harbor, USA.

Current Biology : CB

|November 10, 2012

Summary

This summary is machine-generated.

New methods using fluorescent reporters and translational fusions improve the study of epigenetic reprogramming in plants. This overcomes challenges in obtaining plant tissue for analysis.

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Area of Science:

Plant biology
Epigenetics
Molecular biology

Background:

Studying epigenetic reprogramming in plants is crucial for understanding gene regulation.
Previous research has been limited by difficulties in obtaining sufficient plant tissue for analysis.

Purpose of the Study:

To develop novel methods for analyzing epigenetic reprogramming in plants.
To overcome the challenge of limited tissue availability in plant epigenetic studies.

Main Methods:

Utilized a combination of fluorescent reporters.
Employed translational fusions for enhanced visualization.
Developed techniques for analyzing plant tissue samples.

Main Results:

Successfully generated fluorescent reporters for tracking epigenetic modifications.
Demonstrated the utility of translational fusions in visualizing reprogramming dynamics.
Provided a new approach to obtain and analyze plant tissue for epigenetic studies.

Conclusions:

The new methods offer significant advancements in studying plant epigenetic reprogramming.
This research facilitates a deeper understanding of gene regulation and inheritance in plants.
Future studies can leverage these techniques to explore diverse epigenetic phenomena in plants.