Cited by 81Hypothalamic control of reproductive hormonesNeurogenesis and neuroplasticity mechanismsFibroblast Growth Factor Research

Developmental Regulation of Gonadotropin-Releasing Hormone Neurons by Fibroblast Growth Factor Signaling

Gill, John C., Moenter, Suzanne M., Tsai, Pei-San·2004·Endocrinology

Abstract

GnRH neurons are central to the initiation and maintenance of reproductive function in diverse vertebrates. The formation of a functional GnRH system during development is a highly complex event that likely requires extensive guidance by neurotrophic factors. In this study, we examined whether members of the fibroblast growth factor (FGF) family are critically involved in the development of endogenous GnRH neurons. Immunocytochemistry revealed the presence of FGF receptors (FGFRs) 1, 2, and 3, but not 4, in embryonic day (E) 10.5 medial nasal placode, an area and time consistent with the first appearance of GnRH neurons in mice. Dual immunocytochemistry confirmed the presence of FGFRs 1 and 3, but not 2 and 4, in a substantial fraction of E15.5 and postnatal day (P) 3 GnRH neurons. To examine whether FGF signaling was essential for the specification of GnRH neuronal fate, a nasal explant culture that supported the in vitro emergence of GnRH neurons from E10.5 noses was established. In this system, the addition of SU5402, a FGFR antagonist, suppressed the emergence of GnRH neurons. Lastly, we investigated whether FGF signaling altered the extension of neurites in cultures of dispersed GnRH neurons. The addition of FGF2 to E15.5 and P3 GnRH neurons expressing the green fluorescent protein significantly stimulated neurite outgrowth (E15.5 and P3) and branching (P3), suggesting a regulatory role of FGFs in GnRH axon targeting. Together these results demonstrated that FGF signaling critically regulates multiple phases of development in a neuroendocrine system essential for vertebrate reproduction.

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Crossref · 10.1210/en.2004-0214

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  • FGFR-1 signaling through the mitogen-activated protein kinase pathway regulates neuronal migration, differentiation, survival, and cell proliferation during embryonic development.

    “FGFR-1 signaling through this pathway regulates neuronal migration, differentiation, and survival, as well as cell proliferation during embryonic development.”

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Authors
Gill, J. C., Moenter, S. M., & Tsai, P.-S.
Affiliations
  • University of Colorado Boulder (US)
  • University of Virginia (US)
Venue
Endocrinology
Published
2004-08
Volume
145
Issue
8
Pages
3830-3839
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W1977442072
Cited by
81
References
53
Citations by year
2025: 1 · 2022: 1 · 2021: 4 · 2020: 4 · 2019: 2 · 2018: 1 · 2016: 1 · 2015: 3 · 2014: 2 · 2013: 5 · 2012: 5
FWCI
8.50
Type
journal article
Language
en
Open access
closed
Locations
  • Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fibroblast Growth Factor Research
Keywords
GnRH neurons, FGF signaling, fibroblast growth factor receptor, nasal placode, neurite outgrowth, axon targeting, neuroendocrine development, reproductive development, SU5402
MeSH terms
Animals, Cells, Cultured, Female, Fibroblast Growth Factors, Gonadotropin-Releasing Hormone, Mice, Inbred Strains, Neurons, Pyrroles, Reproduction, Signal Transduction, Fibroblast Growth Factor 2, Neurites, Receptors, Fibroblast Growth Factor, Mice

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