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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...

Epigenetic Regulation

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.

Epigenetic Regulation

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.

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.
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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.

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Related Experiment Video

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Optimized Analysis of DNA Methylation and Gene Expression from Small, Anatomically-defined Areas of the Brain

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Published on: July 12, 2012

Hormones as epigenetic signals in developmental programming.

Abigail L Fowden¹, Alison J Forhead

¹Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK. alf1000@cam.ac.uk

Experimental Physiology

|March 3, 2009

Summary

Environmental factors during early development can change adult traits. Hormones act as epigenetic signals, programming fetal development and influencing lifelong health and disease, especially glucocorticoids.

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Area of Science:

Endocrinology
Developmental Biology
Epigenetics

Background:

Environmental factors during critical developmental periods can alter adult phenotype in mammals.
Hormones play a crucial role in mediating these epigenetic modifications.
Hormones signal environmental cues to feto-placental tissues, affecting their development.

Discussion:

Hormones alter gene expression and protein abundance, impacting physiological systems.
They induce an epigenome specific to the in utero environment.
This review focuses on hormones as epigenetic signals, particularly glucocorticoids.

Key Insights:

Hormones are key mediators of environmental influences on development.
Epigenetic programming by hormones has long-term health implications.
Glucocorticoids are highlighted for their role in feto-placental development.

Outlook:

Further research into hormonal epigenetic signaling can reveal mechanisms for preventing adult diseases.
Understanding these pathways may lead to novel therapeutic strategies.
This review provides a framework for studying hormone-driven developmental programming.