GLP-1 receptor agonist peptide
Exenatide
Exenatide is synthetic exendin-4. In vitro, exendin-4 was characterized as a GLP-1 receptor agonist. Its bibliography separates receptor recognition, cellular response and behavior of different formulations.
This is a research reference, not a product offered in the Asciende catalog. Published studies do not establish the identity, purity or availability of a commercial preparation.
What changed from the reference
Write the evaluated material’s complete name. A shared family organizes a search but does not establish identity or result equivalence.
- Which modification distinguishes the analog: sequence, terminus, conjugate or formulation?
- Does the study compare both entities using the same assay?
- Do the data separate molecular behavior from presentation effects?
Mechanism described in the literature
In fibroblasts engineered to express human GLP-1 receptors, exendin-4 induced cyclic AMP formation. This functional readout complemented binding experiments; receptor recognition and signal production were not equivalent measurements.
Other names in the literature
- Exenatide
- Synthetic exendin-4
Exendin-4 and its fragments
The 1993 receptor-expression study compared exendin-4 with exendin-(9-39). In vitro, the fragment behaved as an antagonist while the complete molecule produced an agonist response. Similar names can therefore conceal a central functional difference. References mentioning exendin require complete entity identification before results are attributed.
One ingredient in different formulations
DURATION-1 compared extended-release exenatide with another presentation of the same ingredient. It was a randomized, open-label investigation whose primary outcome was change in glycated hemoglobin. Its question concerned complete preparations: the common ingredient name neither removed the need for comparison nor made their exposure profiles universal exenatide properties.
What each evidence level adds
The cellular experiment identifies a ligand-receptor-signal relationship. DURATION-1 compares formulations in a defined clinical context. Neither replaces the other or describes every possible preparation. Molecular identity informs mechanism; formulation identity informs the comparative study.
Questions and answers
Is exendin-(9-39) another name for exenatide?
No. It is a distinct fragment with antagonist behavior in the cited cellular study.
Does extended release mean a different molecule?
Not necessarily. DURATION-1 compared different formulations sharing exenatide as their ingredient.
Sources
- Cloning and functional expression of the human islet GLP-1 receptor. Demonstration that exendin-4 is an agonist and exendin-(9-39) an antagonist of the receptor. — Diabetes, 1993
- Cloning and functional expression of the human islet GLP-1 receptor. Demonstration that exendin-4 is an agonist and exendin-(9-39) an antagonist of the receptor.
- Exenatide once weekly versus twice daily for the treatment of type 2 diabetes: a randomised, open-label, non-inferiority study. — Lancet, 2008
- Exenatide once weekly versus twice daily for the treatment of type 2 diabetes: a randomised, open-label, non-inferiority study.