Cited by 66Developmental Biology and Gene RegulationRenal and related cancersGenetic and Kidney Cyst Diseases

Targeted disruption of cubilin reveals essential developmental roles in the structure and function of endoderm and in somite formation

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Smith, Brian T, Mussell, Jason C, Fleming, Paul A, Barth, Jeremy L, Spyropoulos, Demetri D, Cooley, Marion A, Drake, Christopher J, Argraves, W Scott·2006·BMC Developmental Biology

Abstract

Background: Cubilin is a peripheral membrane protein that interacts with the integral membrane proteins megalin and amnionless to mediate ligand endocytosis by absorptive epithelia such as the extraembryonic visceral endoderm (VE). Results: Here we report the effects of the genetic deletion of cubilin on mouse embryonic development. Cubilin gene deletion is homozygous embryonic lethal with death occurring between 7.5–13.5 days post coitum (dpc). Cubilin-deficient embryos display developmental retardation and do not advance morphologically beyond the gross appearance of wild-type 8–8.5 dpc embryos. While mesodermal structures such as the allantois and the heart are formed in cubilin mutants, other mesoderm-derived tissues are anomalous or absent. Yolk sac blood islands are formed in cubilin mutants but are unusually large, and the yolk sac blood vessels fail to undergo remodeling. Furthermore, somite formation does not occur in cubilin mutants. Morphological abnormalities of endoderm occur in cubilin mutants and include a stratified epithelium in place of the normally simple columnar VE epithelium and a stratified cuboidal epithelium in place of the normally simple squamous epithelium of the definitive endoderm. Cubilin-deficient VE is also functionally defective, unable to mediate uptake of maternally derived high-density lipoprotein (HDL). Conclusion: In summary, cubilin is required for embryonic development and is essential for the formation of somites, definitive endoderm and VE and for the absorptive function of VE including the process of maternal-embryo transport of HDL.

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  • Targeted disruption of megalin and cubilin leads to failure of somite formation, indicating their key role in supporting early embryogenesis.

    “Targeted disruption of these receptors leads to failure of somite formation, indicating their key role in supporting early embryogenesis (506).”

    From Placental Origins of Chronic Disease (2016) · cites this paper as [506]

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Authors
Smith, B. T., Mussell, J. C., Fleming, P. A., Barth, J. L., Spyropoulos, D. D., Cooley, M. A., Drake, C. J., & Argraves, W. S.
Affiliations
Medical University of South Carolina (US)
Corresponding author
Argraves, W Scott
Venue
BMC Developmental Biology
Published
2006-06-20
Volume
6
Issue
1
Pages
30-30
ISSN
1471-213X (ISSN-L)
OpenAlex
W1519282881
Cited by
66
References
35
Citations by year
2023: 1 · 2022: 2 · 2021: 3 · 2020: 2 · 2019: 4 · 2018: 4 · 2017: 3 · 2016: 5 · 2015: 2 · 2014: 3 · 2013: 10 · 2012: 7
FWCI
1.63
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • BMC Developmental Biology (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • U.S. Department of Defense (HL07260)
  • Medical University of South Carolina
  • National Institutes of Health (5r03ca109958-02)
  • National Heart, Lung, and Blood Institute (T32-HL-07260, R01HL057375, HL061873, HL 57375, T32HL007260, R01HL061873, T32HL007710)
  • National Cancer Institute (CA109958, R03 CA109958)
  • National Institute of Dental and Craniofacial Research (DE14347, R01DE014347)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Renal and related cancers
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and Kidney Cyst Diseases
Keywords
cubilin, megalin, amnionless, visceral endoderm, definitive endoderm, somitogenesis, embryonic lethality, yolk sac blood islands, HDL uptake, endocytosis, mouse embryo, mesoderm formation
MeSH terms
Animals, Embryo, Mammalian, Endoderm, Exons, Genes, Lethal, Lipoproteins, HDL, Mesoderm, Receptors, Cell Surface, Yolk Sac, Sequence Deletion, Mice, Knockout, Somites, Embryonic Development, Mice

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