How the Bombesin Peptide Signals Your Brain to Stop Eating
Mice lacking the gastrin-releasing peptide receptor no longer stop eating when given bombesin, confirming this receptor is key to the peptide's appetite-suppressing effect.
Quick Facts
What This Study Found
GRP-R knockout mice completely lost bombesin-induced feeding suppression, demonstrating that GRP-R is the key receptor mediating this satiety signal.
Key Numbers
How They Did This
Animal study using GRP-R gene knockout mice. Feeding behavior was measured after bombesin administration and compared between knockout and wild-type controls.
Why This Research Matters
Identifying GRP-R as the specific receptor for bombesin's appetite suppression opens the door to developing targeted peptide-based treatments for obesity and eating disorders.
The Bigger Picture
Neuropeptides like bombesin play crucial roles in regulating hunger and satiety. Pinpointing which receptor mediates these effects is essential for developing peptide therapies that can precisely target appetite without unwanted side effects.
What This Study Doesn't Tell Us
Animal study in mice; results may not directly translate to humans. Knockout models eliminate the receptor entirely, which is more extreme than pharmacological modulation.
Questions This Raises
- ?Could selective GRP-R agonists serve as appetite suppressants in humans?
- ?Are there compensatory mechanisms that develop in GRP-R knockout mice over time?
- ?What role do the other two bombesin receptor subtypes play in feeding behavior?
Trust & Context
- Key Stat:
- Complete loss GRP-R knockout mice showed zero feeding suppression from bombesin, while normal mice significantly reduced food intake
- Evidence Grade:
- Moderate evidence from a well-designed knockout mouse study with clear results, but limited to animal models.
- Study Age:
- Published in 1998. The GRP receptor system remains an active area of research in appetite regulation.
- Original Title:
- Loss of bombesin-induced feeding suppression in gastrin-releasing peptide receptor-deficient mice.
- Published In:
- Proceedings of the National Academy of Sciences of the United States of America, 95(6), 3188-92 (1998)
- Authors:
- Hampton, L L, Ladenheim, E E, Akeson, M, Way, J M, Weber, H C, Sutliff, V E, Jensen, R T, Wine, L J, Arnheiter, H, Battey, J F
- Database ID:
- RPEP-00464
Evidence Hierarchy
Tests effects in animals (usually mice or rats), not humans.
What do these levels mean? →Frequently Asked Questions
What is bombesin?
Bombesin is a neuropeptide originally found in frog skin that has potent effects on appetite suppression, gut motility, and hormone release in mammals. Related peptides like GRP are found naturally in the human body.
Could bombesin-like peptides be used for weight loss?
This study identifies the specific receptor involved, which is a key step. However, developing a bombesin-based weight loss drug would require human trials and careful management of side effects, since GRP receptors affect multiple body systems.
Read More on RethinkPeptides
Cite This Study
https://rethinkpeptides.com/research/RPEP-00464APA
Hampton, L L; Ladenheim, E E; Akeson, M; Way, J M; Weber, H C; Sutliff, V E; Jensen, R T; Wine, L J; Arnheiter, H; Battey, J F. (1998). Loss of bombesin-induced feeding suppression in gastrin-releasing peptide receptor-deficient mice.. Proceedings of the National Academy of Sciences of the United States of America, 95(6), 3188-92.
MLA
Hampton, L L, et al. "Loss of bombesin-induced feeding suppression in gastrin-releasing peptide receptor-deficient mice.." Proceedings of the National Academy of Sciences of the United States of America, 1998.
RethinkPeptides
RethinkPeptides Research Database. "Loss of bombesin-induced feeding suppression in gastrin-rele..." RPEP-00464. Retrieved from https://rethinkpeptides.com/research/hampton-1998-loss-of-bombesininduced-feeding
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkPeptides research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.