Cited by 662Genomics and Chromatin DynamicsImmune cells in cancerDevelopmental Biology and Gene Regulation

A macrophage colony-stimulating factor receptor–green fluorescent protein transgene is expressed throughout the mononuclear phagocyte system of the mouse

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Sasmono, R. Tedjo, Oceandy, Delvac, Pollard, Jeffrey W., Tong, Wei, Pavli, Paul, Wainwright, Brandon J., Ostrowski, Michael C., Himes, S. Roy +1 more·2003·Blood

Abstract

The c-fms gene encodes the receptor for macrophage colony-stimulating factor (CSF-1). The gene is expressed selectively in the macrophage and trophoblast cell lineages. Previous studies have indicated that sequences in intron 2 control transcript elongation in tissue-specific and regulated expression of c-fms. In humans, an alternative promoter was implicated in expression of the gene in trophoblasts. We show that in mice, c-fms transcripts in trophoblasts initiate from multiple points within the 2-kilobase (kb) region flanking the first coding exon. A reporter gene construct containing 3.5 kb of 5' flanking sequence and the downstream intron 2 directed expression of enhanced green fluorescent protein (EGFP) to both trophoblasts and macrophages. EGFP was detected in trophoblasts from the earliest stage of implantation examined at embryonic day 7.5. During embryonic development, EGFP highlighted the large numbers of c-fms-positive macrophages, including those that originate from the yolk sac. In adult mice, EGFP location was consistent with known F4/80-positive macrophage populations, including Langerhans cells of the skin, and permitted convenient sorting of isolated tissue macrophages from disaggregated tissue. Expression of EGFP in transgenic mice was dependent on intron 2 as no lines with detectable EGFP expression were obtained where either all of intron 2 or a conserved enhancer element FIRE (the Fms intronic regulatory element) was removed. We have therefore defined the…

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Crossref · 10.1182/blood-2002-02-0569

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Authors
Sasmono, R. T., Oceandy, D., Pollard, J. W., Tong, W., Pavli, P., Wainwright, B. J., Ostrowski, M. C., Himes, S. R., & Hume, D. A.
Affiliations
Albert Einstein College of Medicine (US)
Corresponding author
Hume, David A.
Venue
Blood
Published
2003-02-01
Volume
101
Issue
3
Pages
1155-1163
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W2130755020
Cited by
662
References
4
Citations by year
2026: 24 · 2025: 19 · 2024: 35 · 2023: 25 · 2022: 28 · 2021: 31 · 2020: 33 · 2019: 38 · 2018: 30 · 2017: 31 · 2016: 29 · 2015: 36 · 2014: 50 · 2013: 39 · 2012: 19
FWCI
6.56
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • Blood (publishedVersion)
  • PubMed (publishedVersion)
  • Research Explorer (The University of Manchester) (publishedVersion)
  • Edinburgh Research Explorer (University of Edinburgh) (submittedVersion, other-oa)
Funders
  • Medical Research Council
  • National Health and Medical Research Council
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
c-fms, macrophage colony-stimulating factor receptor, transgenic mice, trophoblast, macrophages, reticuloendothelial system, intron 2, alternative promoters, embryo implantation, yolk sac macrophages, Langerhans cells, tissue-specific gene expression, myeloid development
MeSH terms
Animals, Base Sequence, Embryo, Mammalian, Female, Introns, Luminescent Proteins, Lymph Nodes, Mice, Transgenic, Molecular Sequence Data, Phagocytes, Placenta, Promoter Regions, Genetic, Tissue Distribution, Trophoblasts, Gene Expression, Receptor, Macrophage Colony-Stimulating Factor, Genes, Reporter, Transgenes, Myeloid Cells, Green Fluorescent Proteins, Mice

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