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Genomic imprinting: parental influence on the genome
1Laboratory of Developmental Genetics and Imprinting, Developmental Genetics Programme, Babraham Institute, Cambridge CB2 4AT, UK. wolf.reik@bbsrc.ac.uk
Nature Reviews. Genetics
|March 17, 2001
Summary
Genomic imprinting, an epigenetic process, regulates gene expression from parental chromosomes. Aberrant imprinting disrupts development and causes disease, offering insights into epigenetic modifications.
Area of Science:
- Genetics
- Epigenetics
- Developmental Biology
Background:
- Genomic imprinting is an epigenetic phenomenon in mammals where genes are expressed from only one parental chromosome.
- Epigenetic marks, or imprints, are established in germ cells and control this monoallelic expression.
- Imprinted genes are crucial for fetal and newborn development, influencing nutrient transfer and behavior.
Purpose of the Study:
- To explore the role of genomic imprinting in mammalian development.
- To understand the connection between imprinting, nutrient transfer, and postnatal behavior.
- To investigate the implications of aberrant imprinting in disease syndromes.
Main Methods:
- Analysis of gene expression patterns in mammals.
- Investigating epigenetic modifications in germ cells.
- Studying the effects of imprinting on fetal growth and newborn behavior.
Main Results:
- Genomic imprinting affects numerous mammalian genes, controlling their parent-of-origin expression.
- Imprinted genes play significant roles in prenatal nutrient supply and postnatal behavioral development.
- Disruptions in imprinting patterns are linked to developmental disorders and disease syndromes.
Conclusions:
- Genomic imprinting is a vital epigenetic mechanism regulating mammalian development.
- Aberrant imprinting leads to developmental abnormalities and diseases.
- Studying imprinting provides key insights into epigenetic gene regulation during development.