Overview
Human amylin is a peptide hormone structurally related to calcitonin gene-related peptide (CGRP). It is produced in pancreatic β-cells and stored in secretory granules alongside insulin. Amylin's primary physiological role involves regulating postprandial glucose levels by slowing gastric emptying and suppressing glucagon secretion. Research has linked amylin aggregation to pancreatic amyloid deposits in type 2 diabetes patients. Synthetic analogs like pramlintide are used therapeutically. The peptide's complex folding behavior and amyloidogenic properties make it a subject of study in both endocrinology and neurodegenerative disease research.
Physical and Chemical Properties
Human amylin is a 37-residue peptide with a disulfide bridge between Cys2 and Cys7, contributing to its stability. The molecule exhibits amphipathic characteristics, with hydrophobic regions driving its propensity for β-sheet formation and amyloid fibril aggregation under pathological conditions. In solution, amylin adopts a random coil structure at neutral pH but transitions to α-helix in membrane-mimicking environments. Its solubility decreases markedly at concentrations above 0.1 mg/mL. The peptide is susceptible to proteolytic degradation, requiring careful handling during experimental procedures.
Main Applications
In pharmaceutical development, amylin analogs are used as adjunct therapies in diabetes management. Pramlintide, a synthetic analog, is FDA-approved for type 1 and type 2 diabetes treatment to improve glycemic control. Research applications include studies of protein misfolding diseases, as amyloid formation by IAPP serves as a model for neurodegenerative conditions like Alzheimer's. The peptide is also investigated for its anorexigenic effects in obesity research and its role in β-cell apoptosis in diabetes pathogenesis.
Safety and Storage
Lyophilized human amylin should be stored at -20°C in airtight containers with desiccant to prevent moisture absorption. Reconstituted solutions are typically stable for 1–2 weeks at 4°C when prepared with sterile buffers containing protease inhibitors. Personal protective equipment (gloves, lab coat) is mandatory when handling. Inhalation of powder should be avoided due to potential respiratory irritation. Waste disposal must follow institutional guidelines for bioactive peptides.
B2B Procurement Guide
When sourcing human amylin, prioritize suppliers with ISO 9001 certification and batch-specific certificates of analysis. Key specifications include HPLC purity (≥95%), correct mass spectrometry profile, and low endotoxin levels (<1 EU/μg). For clinical-grade material, ensure vendors comply with current Good Manufacturing Practices (cGMP). Bulk quantities (100mg+) typically offer 15–30% cost reductions. Lead times for custom synthesis range from 4–8 weeks. Consider suppliers offering stability data and analytical method validation support.
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