Petrelintide (ZP8396) | Long-Acting Amylin Analogue Research
Petrelintide (ZP8396) is an investigational, long-acting amylin analogue developed by Zealand Pharma and studied for its molecular properties, receptor signaling, and pharmacological activity in laboratory research.
Amylin is a naturally occurring peptide hormone released from pancreatic beta cells alongside insulin. In experimental models, amylin signaling is associated with nutrient-response pathways, feeding behavior, and metabolic regulation.
Molecular Mechanism and Research Properties
Petrelintide is an acylated peptide engineered for prolonged biological activity. Its fatty-acid modification supports reversible albumin binding, a mechanism associated with reduced clearance and extended pharmacokinetic exposure.
Laboratory investigations have characterized its agonist activity at amylin receptor subtypes AMY1 and AMY3, along with the calcitonin receptor (CTR). These receptor systems involve receptor activity-modifying proteins (RAMPs), which influence ligand recognition and downstream signaling.
Preclinical Laboratory Findings
A 2024 investigation evaluated petrelintide in diet-induced obese (DIO) rat models over 30 days.
Researchers documented:
- Reduced consumption of high-fat laboratory diets.
- Differences in body-weight trajectories compared with vehicle controls.
- Reduced relative fat mass in experimental groups.
- Greater preservation of relative lean mass, measured using EchoMRI.
These observations are specific to the experimental rodent models and study conditions.
Additional peptide-characterization studies have examined chemical stability, fibrillation resistance, and solubility under controlled, approximately neutral-pH laboratory conditions.
Petrelintide vs. Eloralintide: Research Comparison
Petrelintide and Eloralintide (LY3841136) are distinct long-acting compounds investigated within the amylin receptor signaling pathway.
Petrelintide exhibits activity across multiple amylin/calcitonin receptor targets, whereas eloralintide has demonstrated preferential AMY1 receptor activity in experimental characterization.
Their different receptor profiles provide opportunities for comparative pharmacology research but do not establish superiority of either compound.
Summary of Characteristics
| Property | Details |
|---|---|
| Chemical Sequence of Amino Acids | {γGlu-arachidate}-RDGTATKATERLA-{homoGlu}-FLQRSSF-{Sar}-A{NMeIle}-LSSTEVGSNT-{Hyp}-NH2 (Lactam bridge: Asp3-Lys8) |
| CAS Number | 2766385-23-1 |
| Molecular Formula | C₁₈₅H₃₀₅N₄₉O₆₁ |
| Molecular Weight | 4,191.69 g/mol (Da) |
| Purity | |
| Storage | Store lyophilized at -20°C, protected from light and moisture. Once reconstituted, store at 2-8°C and use within the timeframe indicated in the accompanying documentation. Keep the container tightly sealed. |
| Other Known Titles | ZP8396, ZP-8396, Petrelintide (INN), GTPL13804, EX-A12430 |
