Cited by 36Genetic Syndromes and ImprintingEpigenetics and DNA MethylationGenomics and Chromatin Dynamics

Sensitive Flow Cytometric Analysis Reveals a Novel Type of Parent-of-Origin Effect in the Mouse Genome

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Preis, Jost I., Downes, Meredith, Oates, Nathan A., Rasko, John E.J., Whitelaw, Emma·2003·Current Biology

Abstract

The discovery of classic parental imprinting came, at least in part, from the analysis of transgene expression in mice. It was noticed that some transgenes were only expressed following paternal transmission and that others sometimes showed differential patterns of methylation depending on the parent of origin. Here, we present evidence of a novel and more subtle form of parental imprinting by taking advantage of the highly sensitive detection of murine transgene expression afforded by flow cytometry. We have produced nine lines of transgenic mice carrying a GFP reporter linked to the human alpha-globin promoter and enhancer elements, which direct expression to erythroid cells. A high proportion of transgenic lines, four of the nine, display significantly lower levels of expression following maternal transmission. Both the percentage of expressing cells and the mean fluorescence in expressing cells are between 10% and 30% lower following maternal transmission. These effects are reversible upon passage through the opposite germline. This finding raises the possibility that differences in the epigenetic state of the maternal and paternal chromosomes in adult somatic cells are more widespread than was previously thought.

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Crossref · 10.1016/s0960-9822(03)00335-x

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Authors
Preis, J. I., Downes, M., Oates, N. A., Rasko, J. E. J., & Whitelaw, E.
Affiliations
  • The University of Sydney (AU)
  • Centenary Institute (AU)
Corresponding author
Whitelaw, Emma
Venue
Current Biology
Publisher
Elsevier BV
Published
2003-05
Volume
13
Issue
11
Pages
955-959
ISSN
0960-9822 (ISSN-L)
OpenAlex
W2023085607
Cited by
36
References
22
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2023: 1 · 2022: 1 · 2021: 1 · 2020: 1 · 2019: 2 · 2017: 1 · 2015: 1 · 2014: 3 · 2013: 5 · 2012: 1
FWCI
1.42
Type
journal article
Language
en
Open access
Locations
  • Current Biology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Syndromes and Imprinting
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
Keywords
genomic imprinting, parent-of-origin effects, transgenic mice, GFP reporter, erythroid cells, transgene expression, DNA methylation, epigenetic inheritance, mother-to-child transmission, paternal transmission
MeSH terms
Animals, Cell Separation, Flow Cytometry, Luminescent Proteins, Mice, Transgenic, Pedigree, Sensitivity and Specificity, Genome, Genes, Reporter, Genomic Imprinting, Transgenes, Green Fluorescent Proteins, Mice

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