Targeting the Ghrelin Receptor: Oral Drug Development Including Cortistatin Cross-Reactivity
Orally active GH secretagogues and the endogenous peptide cortistatin both target the ghrelin receptor, with cortistatin's cross-reactivity revealing additional therapeutic dimensions beyond GH release and appetite.
Quick Facts
What This Study Found
Orally active GH secretagogues and cortistatin (a somatostatin-related peptide) both target the ghrelin receptor, expanding the receptor's known ligand repertoire and therapeutic targeting possibilities.
Key Numbers
How They Did This
Review of oral GH secretagogue development (peptide and non-peptide) and the emerging pharmacology of cortistatin-GHS-R interaction.
Why This Research Matters
The ghrelin receptor integrates signals from multiple peptide families. Understanding this broader ligand landscape improves drug design and predicts clinical effects more accurately.
The Bigger Picture
Receptors rarely respond to just one ligand in nature. The ghrelin receptor's response to both ghrelin and cortistatin reveals a richer signaling system than assumed.
What This Study Doesn't Tell Us
Review from 2003. The clinical significance of cortistatin-GHS-R interaction was still being explored.
Questions This Raises
- ?Does cortistatin modulate ghrelin's appetite effects?
- ?Could cortistatin analogs be developed for specific GHS-R therapeutic targeting?
- ?Do cortistatin levels affect GH secretagogue drug efficacy?
Trust & Context
- Key Stat:
- Multi-ligand receptor The ghrelin receptor responds to ghrelin, synthetic GHS, AND cortistatin — a richer pharmacology than one ligand would suggest
- Evidence Grade:
- Moderate evidence from a review integrating drug development data with novel receptor pharmacology.
- Study Age:
- Published in 2003. The cortistatin-ghrelin receptor interaction has been further characterized.
- Original Title:
- Targeting the ghrelin receptor: orally active GHS and cortistatin analogs.
- Published In:
- Endocrine, 22(1), 13-8 (2003)
- Authors:
- Deghenghi, Romano(7), Broglio, Fabio(8), Papotti, Mauro(6), Muccioli, Giampiero, Ghigo, Ezio
- Database ID:
- RPEP-00809
Evidence Hierarchy
Summarizes existing research on a topic.
What do these levels mean? →Frequently Asked Questions
What is cortistatin?
A brain peptide related to somatostatin that unexpectedly also activates the ghrelin receptor. This means the ghrelin system integrates signals from multiple peptide sources.
Why does this matter for drug development?
If the ghrelin receptor responds to multiple natural peptides, drugs targeting it will have broader effects than expected. Understanding the full ligand landscape enables more precise drug design.
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Cite This Study
https://rethinkpeptides.com/research/RPEP-00809APA
Deghenghi, Romano; Broglio, Fabio; Papotti, Mauro; Muccioli, Giampiero; Ghigo, Ezio. (2003). Targeting the ghrelin receptor: orally active GHS and cortistatin analogs.. Endocrine, 22(1), 13-8.
MLA
Deghenghi, Romano, et al. "Targeting the ghrelin receptor: orally active GHS and cortistatin analogs.." Endocrine, 2003.
RethinkPeptides
RethinkPeptides Research Database. "Targeting the ghrelin receptor: orally active GHS and cortis..." RPEP-00809. Retrieved from https://rethinkpeptides.com/research/deghenghi-2003-targeting-the-ghrelin-receptor
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.