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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.

Gene-Environment Interactions

Gene-Environment Interactions

Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...

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...

Inheritance of Chromatin Structures

Inheritance of Chromatin Structures

Epigenetics is the study of inherited changes in a cell's phenotype without changing the DNA sequences. It provides a form of memory for the differential gene expression pattern to maintain cell lineage, position-effect variegation, dosage compensation, and maintenance of chromatin structures such as telomeres and centromeres. For example, the structure and location of the centromere on chromosomes are epigenetically inherited. Its functionality is not dictated or ensured by the underlying DNA...

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Related Experiment Video

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In Utero Intra-cardiac Tomato-lectin Injections on Mouse Embryos to Gauge Renal Blood Flow

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Epigenetics, development, and the kidney.

Gregory R Dressler¹

¹Department of Pathology, 2049 BSRB 2200, University of Michigan, Ann Arbor, MI 48109, USA. dressler@umich.edu

Journal of the American Society of Nephrology : JASN

|August 22, 2008

Summary

This summary is machine-generated.

Epigenetic modifications like DNA methylation and histone modification establish gene activity. These processes, crucial for embryonic development and cellular memory, are key to understanding tissue-specific cell fates and diseases like cancer.

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Area of Science:

Molecular Biology
Developmental Biology
Epigenetics

Background:

Maintaining differentiated cell states requires precise control of gene activity.
Epigenetic mechanisms, including DNA methylation and histone modification, establish and maintain these gene expression patterns.
Chromatin biology advancements facilitate the study of cellular memory and epigenetic regulation.

Purpose of the Study:

To explore how epigenetic modifications establish and propagate cell-specific gene activity during embryonic development.
To investigate the role of DNA-binding factors in conferring locus and tissue specificity to epigenetic marks.
To understand the implications of epigenetic modifications in kidney development and disease.

Main Methods:

Analysis of DNA methylation patterns.
Histone modification assays.
Study of DNA-binding factors (e.g., Pax2/8) in chromatin remodeling.
Investigation of epigenetic roles in kidney development.

Main Results:

DNA methylation and histone modifications define active and silent chromatin domains.
Specific DNA-binding factors like Pax2/8 may direct epigenetic modifications for kidney-specific gene regulation.
Epigenetic modifications are critical for establishing renal epithelial cell fate.

Conclusions:

Epigenetic mechanisms are fundamental to maintaining differentiated states and cellular memory.
DNA-binding factors play a role in tissue-specific epigenetic programming during development.
Epigenetic modifications are integral to understanding development, aging, and diseases such as cancer.