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Imprinted gene expression in fetal growth and development
L Lambertini1, C J Marsit, P Sharma
1Department of Preventive Medicine, Mount Sinai School of Medicine, New York, NY 10029, USA. luca.lambertini@mssm.edu
Placenta
|April 3, 2012
Summary
Genomic imprinting regulates fetal development. Specific imprinted genes, ZNF331 and SLC22A18, influence fetal size and head circumference, highlighting imprinting's crucial role in placental development and childhood outcomes.
Area of Science:
- Genetics
- Developmental Biology
- Reproductive Medicine
Background:
- Genomic imprinting is essential for normal fetoplacental development.
- Imprinted genes regulate critical events in placenta implantation, growth, and embryogenesis.
- Aberrant imprinting is linked to pregnancy complications and can affect childhood development.
Purpose of the Study:
- To investigate the expression profiles of 22 imprinted genes in placental samples.
- To examine associations between imprinted gene expression and fetal development parameters.
- To understand the role of imprinting in fetal growth and size variations.
Main Methods:
- Analysis of 106 placenta samples, enriched for small and large for gestational age cases.
- Quantitative assessment of 22 imprinted gene expression levels.
- Statistical analysis to correlate gene expression with newborn head circumference, birth weight, and size for gestational age.
Main Results:
- The maternally imprinted/paternally expressed gene ZNF331 showed an inverse association with fetal size parameters.
- The paternally imprinted/maternally expressed gene SLC22A18 directly associated with increased newborn head circumference.
- Multidimensional Scaling identified two distinct clusters of imprinted genes independently influencing fetoplacental development.
Conclusions:
- Imprinted genes play a fundamental role in regulating fetoplacental growth and development.
- Specific imprinted genes like ZNF331 and SLC22A18 have distinct impacts on fetal growth metrics.
- Two gene clusters suggest coordinated roles in cell growth, tissue development, and process coordination during fetal development.
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