Cited by 72Developmental Biology and Gene RegulationGrowth Hormone and Insulin-like Growth FactorsZebrafish Biomedical Research Applications

The role of insulin receptor signaling in zebrafish embryogenesis

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Toyoshima, Yuka, Monson, Christopher, Duan, Cunming, Wu, Yingjie, Gao, Chuan, Yakar, Shoshana, Sadler, Kirsten C., LeRoith, Derek·2008·Endocrinology

Abstract

Insulin receptor (IR) signaling is considered to be important in growth and development in addition to its major role in metabolic homeostasis. The metabolic role of insulin in carbohydrate and lipid metabolism is extensively studied. In contrast, the role of IR activation during embryogenesis is less understood. To address this, we examined the function of the IR during zebrafish development. Zebrafish express two isoforms of IR (insra and insrb). Both isoforms were cloned and show high homology to the human insulin receptor and can functionally substitute for the human IR in fibroblasts derived from insr gene-deleted mice. Gene expression studies reveal that these receptors are expressed at moderate levels in the central nervous system during development. Morpholino-mediated selective knockdown of each of the IR isoforms causes growth retardation and profound morphogenetic defects in the brain and eye. These results clearly demonstrate that IR signaling plays essential roles in vertebrate embryogenesis and growth.

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Crossref · 10.1210/en.2008-0329

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  • Human Insulin is active in zebrafish because its mature form shares extensive amino acid identity with zebrafish Insulin and was previously shown to activate zebrafish Insulin receptors.

    “We suspected that human Insulin would be active in zebrafish because its mature form exhibits extensive amino acid identity (~77%) with that of zebrafish and it was previously shown to activate zebrafish Insulin receptors (Papasani et al., 2006; Toyoshima et al., 2008).”

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  1. Westerfield M 2000 The zebrafish book. A guide for laboratory use of ze- brafish. 4th ed. Eugene, OR: University of Oregon Press

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Authors
Toyoshima, Y., Monson, C., Duan, C., Wu, Y., Gao, C., Yakar, S., Sadler, K. C., & LeRoith, D.
Affiliations
  • Icahn School of Medicine at Mount Sinai (US)
  • Mount Sinai Hospital (US)
  • University of Michigan (US)
Corresponding author
LeRoith, Derek
Venue
Endocrinology
Published
2008-08-07
Volume
149
Issue
12
Pages
5996-6005
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W2015316303
Cited by
72
References
32
Citations by year
2026: 3 · 2025: 3 · 2024: 1 · 2023: 5 · 2022: 4 · 2021: 6 · 2020: 3 · 2019: 4 · 2018: 5 · 2017: 5 · 2016: 3 · 2015: 5 · 2014: 4 · 2013: 1 · 2012: 3
FWCI
2.33
Type
journal article
Language
en
Open access
Locations
  • Endocrinology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institutes of Health
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Growth Hormone and Insulin-like Growth Factors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Zebrafish Biomedical Research Applications
Keywords
insulin receptor signaling, zebrafish embryonic development, insulin receptor isoforms, brain development, eye development, growth retardation, central nervous system, morpholino knockdown
MeSH terms
Animals, Cell Line, Mutation, Receptor, Insulin, Zebrafish, Blotting, Western, Signal Transduction, In Situ Hybridization, Gene Expression Regulation, Developmental, Protein Isoforms, Reverse Transcriptase Polymerase Chain Reaction, Mice

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