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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.

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...

Centrosome Duplication

Centrosome Duplication

The primary microtubule organizing center (MTOC) in animal cells is the centrosome. A centrosome has two cylindrical centrioles at its core. Each centriole consists of nine sets of three microtubules held together by proteins. The centrioles are positioned at right angles to each other and surrounded by a shapeless protein cloud called the pericentriolar matrix, or pericentriolar material (PCM).
To ensure that each daughter cell receives a centrosome after cell division, centrosome duplication...

Centrosome Duplication

Centrosome Duplication

The primary microtubule organizing center (MTOC) in animal cells is the centrosome. A centrosome has two cylindrical centrioles at its core. Each centriole consists of nine sets of three microtubules held together by proteins. The centrioles are positioned at right angles to each other and surrounded by a shapeless protein cloud called the pericentriolar matrix, or pericentriolar material (PCM).
To ensure that each daughter cell receives a centrosome after cell division, centrosome duplication...

Centrioles and Centrosomes

Centrioles and Centrosomes

Most animal cells comprise a pair of centrioles together called a centrosome. The cell duplicates its centrosome and contains two centrosomes side-by-side, which begin to move apart during the prophase. As the centrosomes migrate to two different sides of the cell, microtubules start extending from each centrosome toward the other end. The mitotic spindle is composed of the centrosomes and their emerging microtubules.
Near the end of the prophase, also called late prophase or "prometaphase,"...

Non-nuclear Inheritance

Non-nuclear Inheritance

Most DNA resides in the nucleus of a cell. However, some organelles in the cell cytoplasm⁠—such as chloroplasts and mitochondria⁠—also have their own DNA. These organelles replicate their DNA independently of the nuclear DNA of the cell in which they reside. Non-nuclear inheritance describes the inheritance of genes from structures other than the nucleus.

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Related Experiment Video

Updated: Jul 1, 2026

Transnuclear Mice with Pre-defined T Cell Receptor Specificities Against Toxoplasma gondii Obtained Via SCNT

Transnuclear Mice with Pre-defined T Cell Receptor Specificities Against Toxoplasma gondii Obtained Via SCNT

Published on: September 30, 2010

[Somatic cell nuclear transfer and centrosome inheritance].

Wei-Hua Du¹, Hua-Bin Zhu, Hai-Sheng Hao

¹Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100094, China dwh679@sohu.com

Yi Chuan = Hereditas

|September 10, 2008

Summary

Cloned embryo development relies on proper chromosome separation and spindle organization, processes dependent on the centrosome. Aberrant centrosomes in somatic cell nuclear transfer (SCNT) embryos can cause developmental failure.

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Transnuclear Mice with Pre-defined T Cell Receptor Specificities Against Toxoplasma gondii Obtained Via SCNT

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Nuclear Transfer into Mouse Oocytes

Nuclear Transfer into Mouse Oocytes

Published on: November 30, 2006

Area of Science:

Cell Biology
Developmental Biology
Reproductive Biology

Context:

Somatic cell nuclear transfer (SCNT) is a key technology in cloning animals.
The centrosome, a critical microtubule-organizing center, plays a vital role in cell division.
Proper centrosome function is essential for successful embryonic development after SCNT.

Purpose:

To review the role of centrosomes in embryonic development following SCNT.
To analyze centrosome inheritance during gametogenesis and fertilization.
To examine the status of centrosomes and associated proteins in SCNT embryos.

Summary:

The developmental competence of cloned embryos is influenced by chromosomal and spindle organization post-nuclear transfer.
Centrosome abnormalities can lead to aneuploidy and developmental failure in cloned embryos.
This review discusses centrosome function, inheritance, and its condition in SCNT embryos, offering insights into developmental abnormalities.

Impact:

Understanding centrosome behavior in SCNT is crucial for improving cloning efficiency.
This research provides a basis for addressing developmental issues in cloned animals.
Identifies centrosome dysfunction as a potential target for enhancing SCNT outcomes.