VIP

Origin & Classification

VIP is a 28-amino-acid peptide produced in neurons and endocrine cells throughout the gastrointestinal tract, pancreas, and central nervous system. It belongs to the secretin/glucagon family of peptides and is synthesized as part of a larger precursor protein that is cleaved to yield the active form. Synthetic VIP for research is produced via solid-phase peptide synthesis.

Mechanism & Research Context

VIP exerts its effects by binding to VPAC1 and VPAC2 receptors, G protein-coupled receptors that activate adenylate cyclase and increase intracellular cAMP. The resulting signaling mediates smooth muscle relaxation in the digestive tract and airways, stimulates secretion of water and electrolytes in the intestine, and modulates insulin and glucagon release. VIP also plays roles in immune regulation by modulating cytokine production and influencing T-cell differentiation. Researchers study VIP to understand its involvement in circadian rhythm regulation within the suprachiasmatic nucleus, its effects on neuroprotection, and its interaction with inflammatory pathways. Mechanistic analyses focus on downstream signaling cascades, receptor desensitization, and cross-talk with other peptide hormones.

Composition & Quality

VIP is supplied as a lyophilized peptide with purity typically above 95 %, determined by HPLC and mass spectrometry. Production adheres to GMP-aligned processes, including peptide synthesis, purification, and sterile filtration. Quality control ensures correct peptide sequence, absence of contaminating peptides or endotoxin, and appropriate peptide content. VIP is sensitive to light and oxidation; therefore, storage recommendations include protection from light and refrigeration of the lyophilized powder. Certificates of analysis accompany each batch, detailing sequence, purity, and recommended storage.

Summary & Unified Disclaimer

This description summarizes the scientific context of the molecule. It is provided for educational and research discussion purposes only. It is not intended to diagnose, treat, cure, or prevent any disease, and no medical or consumption claims are made.