Cited by 1,029TGF-β signaling in diseasesDevelopmental Biology and Gene RegulationHematopoietic Stem Cell Transplantation

Defective haematopoiesis and vasculogenesis in transforming growth factor-β1 knock out mice

Dickson, Marion C., Martin, Julie S., Cousins, Frances M., Kulkarni, Ashok B., Karlsson, Stefan, Akhurst, Rosemary J.·1995·Development

Abstract

Transforming growth factor β1 (TGFβ1) is shown here to be required for yolk sac haematopoiesis and endothelial differentiation. Mice with a targeted mutation in the TGFβ1 gene were examined to determine the cause of prenatal lethality, which occurs in 50% of homozygous TGFβ1 null (TGFβ1−/−) conceptions. 50% of TGFβ1−/− and 25% of TGFβ1+/− conceptuses were found to die at around 10.5 dpc. The primary defects were restricted to extraembryonic tissues, namely the yolk sac vasculature and haematopoietic system. The embryos per se showed developmental retardation, oedema and necrosis, which were probably secondary to the extraembryonic lesions. The defect in vasculogenesis appeared to affect endothelial differentiation, rather than the initial appearance and outgrowth of endothelial cells. Initial differentiation of yolk sac mesoderm to endothelial cells occurred, but defective differentiation resulted in inadequate capillary tube formation, and weak vessels with reduced cellular adhesiveness. Defective haematopoiesis resulted in a reduced erythroid cell number within the yolk sac. Defective yolk sac vasculogenesis and haematopoiesis were present either together, or in isolation of each other. The phenotypes are consistent with the observation of abundant TGFβ1 gene expression in both endothelial and haematopoietic precursors. The data indicate that the primary effect of loss of TGFβ1 function in vivo is not increased haematopoietic or endothelial cell proliferation, which might have been expected by deletion of a negative growth regulator, but defective haematopoiesis and endothelial differentiation.

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Crossref · 10.1242/dev.121.6.1845

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  • TGF-β's pro-angiogenic activities include promotion of capillary tube formation.

    “TGF-β’s pro-angiogenic activities include promotion of capillary tube formation267”

    From TGFβ biology in cancer progression and immunotherapy (2021) · cites this paper as [267]

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Authors
Dickson, M. C., Martin, J. S., Cousins, F. M., Kulkarni, A. B., Karlsson, S., & Akhurst, R. J.
Affiliations
  • University of Glasgow (GB)
  • National Institutes of Health (US)
Venue
Development
Published
1995-06-01
Volume
121
Issue
6
Pages
1845-1854
ISSN
  • 0950-1991 (ISSN-L)
  • 1477-9129
OpenAlex
W2163220652
Cited by
1,029
References
56
Citations by year
2026: 4 · 2025: 15 · 2024: 13 · 2023: 10 · 2022: 13 · 2021: 24 · 2020: 16 · 2019: 20 · 2018: 20 · 2017: 32 · 2016: 23 · 2015: 25 · 2014: 32 · 2013: 32 · 2012: 41
FWCI
13.16
Type
journal article
Language
en
Open access
closed
Locations
  • Development (publishedVersion)
  • PubMed (publishedVersion)
Funders
Wellcome Trust
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › TGF-β signaling in diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
Keywords
TGF-β1, vasculogenesis, endothelial differentiation, prenatal lethality, extraembryonic tissues, erythroid cells, capillary tube formation, developmental delay
MeSH terms
Animals, Base Sequence, Blood Vessels, Cell Differentiation, Cells, Cultured, Endothelium, Fetal Death, Hematopoiesis, Molecular Sequence Data, Yolk Sac, Polymerase Chain Reaction, Transforming Growth Factor beta, In Situ Hybridization, DNA Primers, Mice, Knockout, Mice

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