Cited by 426Regulation of Appetite and ObesityNeuropeptides and Animal PhysiologyHypothalamic control of reproductive hormones

Anatomy of an Endogenous Antagonist: Relationship between Agouti-Related Protein and Proopiomelanocortin in Brain

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Bagnol, Didier, Lu, Xin-Yun, Kaelin, Christopher B., Day, Heidi E. W., Ollmann, Michael, Gantz, Ira, Akil, Huda, Barsh, Gregory S. +1 more·1999·The Journal of Neuroscience

Abstract

Agouti-related protein (AGRP) is a recently discovered orexigenic neuropeptide that inhibits the binding and action of alpha-melanocyte-stimulating hormone derived from proopiomelanocortin (POMC) at the melanocortin 3 receptor (MC3R) and melanocortin 4 receptor (MC4R) and has been proposed to function primarily as an endogenous melanocortin antagonist. To better understand the interplay between the AGRP and melanocortin signaling systems, we compared their nerve fiber distributions with each other by immunohistochemistry and their perikarya distribution with MC3R and MC4R by double in situ hybridization. Although deriving from distinct cell groups, AGRP and melanocortin terminals project to identical brain areas. Both AGRP and melanocortin neurons selectively express the MC3R, which provides a neuroanatomical basis for a dual-input circuit with biological amplification and feedback inhibition. These studies highlight a broader complexity in POMC-mediated behavior in the brain.

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Authors
Bagnol, D., Lu, X.-Y., Kaelin, C. B., Day, H. E. W., Ollmann, M., Gantz, I., Akil, H., Barsh, G. S., & Watson, S. J.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Mental Health Research Institute (AU)
  • Howard Hughes Medical Institute (US)
  • University of Michigan (US)
Venue
The Journal of Neuroscience
Published
1999-09-15
Volume
19
Issue
18
Pages
RC26-RC26
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1572502886
Cited by
425
References
29
Citations by year
2026: 4 · 2025: 5 · 2024: 15 · 2023: 11 · 2022: 11 · 2021: 12 · 2020: 10 · 2019: 11 · 2018: 14 · 2017: 12 · 2016: 14 · 2015: 20 · 2014: 9 · 2013: 16 · 2012: 18
FWCI
6.81
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of Mental Health (P01 MH 42251, P01MH042251)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01 DK-54032-01, R01DK054032, DK 28506)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
Keywords
agouti-related protein, proopiomelanocortin, melanocortin 3 receptor, melanocortin-4 receptor, melanocortin signaling, orexigenic peptides, product inhibition, neuroanatomy, feeding behavior
MeSH terms
Animals, Autoradiography, Brain, Immunohistochemistry, Male, Nerve Fibers, Pro-Opiomelanocortin, Proteins, Rats, Sprague-Dawley, In Situ Hybridization, Receptors, Corticotropin, Intercellular Signaling Peptides and Proteins, Receptor, Melanocortin, Type 3, Receptor, Melanocortin, Type 4, Rats, Agouti-Related Protein

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