VIP (Vasoactive Intestinal Peptide) (HPLC-Verified / Batch COA)⁠

VIP Research Reagent | Vasoactive Intestinal Peptide Nonapeptide

Vasoactive Intestinal Peptide (VIP) is an endogenous 28-amino acid polypeptide structure belonging to the secretin/glucagon superfamily. Synthesized across broad cellular sites including the suprachiasmatic nucleus (SCN) of the hypothalamus, cerebral cortex, and enteric nervous system, VIP acts as a prominent neurocrine modifier. It demonstrates high-affinity binding characteristics across two distinct G-protein coupled receptors: VPAC1 and VPAC2.

In neuro-regulatory and physiological mapping, VIP plays a critical structural role in maintaining homeostasis within the central nervous system. Because it acts directly at the intersection of cellular immunity and neurogenic expression, it serves as an excellent model for evaluating how internal chemical transmitters regulate inflammatory markers without altering basic cellular integrity.

Batch-Specific HPLC Analysis & Validation

To eliminate tracking discrepancies and ensure absolute batch-specific reproducibility within high-sensitivity experimental assays, our VIP stock adheres to rigid analytical controls:

• HPLC Spectral Characterization: Every batch is validated via High-Performance Liquid Chromatography to verify a chemical purity profile matching or exceeding ≥99.0%.
• Mass Spectrometry Verification: Authenticates precise molecular weight parameters, confirming accurate amino acid alignment across the full 28-member chain.
• Batch-Linked COA: Reagents are cataloged alongside full Certificate of Analysis documentation to preserve testing matrix transparency.

Experimental Research Context & Mechanisms

Preclinical cellular models utilizing VIP 5mg and 10mg configurations explore several prominent molecular vectors:

• Microglial Deactivation: Observing the peptide’s capacity to downregulate the synthesis of pro-inflammatory factors such as TNF-$\alpha$, IL-6, and nitric oxide inside active microglial cultures.
• Circadian Synchronisation: Mapping signaling loops within the suprachiasmatic nucleus to analyze how VIP stabilizes rhythmic clock gene expression vectors.
• Neuroprotection Mimetics: Tracking downstream neuroprotective pathways mediated through the synthesis of secondary cellular trophic factors like activity-dependent neuroprotective protein (ADNP).

Laboratory Storage & Handling Protocols

To guard the complex 28-amino acid structural chain against oxidation, chemical cleavage, or premature structural breakdown, ensure these parameters are maintained:

• Lyophilized Protection: Store unopened, vacuum-sealed glass vials long-term within a deep laboratory freezer set strictly at -20°C. Protect the storage container from ambient light levels and external moisture.
• Reconstitution Framework: Always allow dry vials to sit undisturbed until they completely align with room temperature parameters before inserting solvents. Reconstitute utilizing Sterile Bacteriostatic Water or normal saline.
• Liquid Phase Management: Post-solvent introduction, store the working mixture inside a dark laboratory refrigerator between 2°C and 6°C. Avoid physical vortexing or mechanical agitation. Conclude all active biological assay monitoring workflows within 10 to 12 days.