SNAP-8

Volume Pricing

Price per pack (10 vials). Discount applies to this compound only – no mix and match.

SNAP-8 — SNARE Complex-Competing Octapeptide for Neuromuscular Junction Research

SNAP-8 (Acetyl Octapeptide-3) is a synthetic octapeptide that mimics the N-terminal domain of SNAP-25 (synaptosomal-associated protein 25kDa), a core component of the neuronal SNARE complex. SNAP-25 was characterized extensively in the 1990s as one of three proteins — alongside syntaxin-1 and synaptobrevin/VAMP — required for synaptic vesicle docking and calcium-triggered neurotransmitter exocytosis. SNAP-8 was developed as a longer, higher-affinity variant of Acetyl Hexapeptide-3 (argireline): the addition of two N-terminal amino acids to the hexapeptide sequence increases competitive binding affinity for the SNARE complex assembly site. By competing with endogenous SNAP-25 for incorporation into the SNARE complex, SNAP-8 attenuates vesicle docking efficiency and reduces acetylcholine release at neuromuscular junctions in in vitro assay systems. Research with this compound operates primarily within cosmeceutical biology and neuromuscular junction signaling.

Why SNAP-8’s SNARE Competition Mechanism Matters

The SNARE complex (formed by SNAP-25, syntaxin-1, and synaptobrevin) operates as the core fusion machinery for synaptic vesicle exocytosis. SNAP-25 contributes two alpha-helical domains (Sn1 and Sn2) to the four-helix SNARE bundle. SNAP-8’s sequence mimics the Sn1 domain’s N-terminal region, allowing it to enter SNARE assembly in partial competition with the endogenous protein. This partial inhibition of vesicle docking reduces the quantum of acetylcholine released per nerve impulse at the neuromuscular junction — a mechanism studied in the context of expression wrinkle formation, where repetitive muscle contraction is driven by acetylcholine signaling. Unlike botulinum toxin, which irreversibly cleaves SNAP-25, SNAP-8’s inhibition is competitive and reversible.

Research Applications

SNAP-8 is used in studies examining:

• SNARE complex assembly dynamics — competitive peptide binding, four-helix bundle formation kinetics
• Neuromuscular junction signaling — acetylcholine quantal release, vesicle docking efficiency measurement
• Cosmeceutical biology — expression line formation mechanisms; comparison of SNARE-targeting peptides to neurotoxin-based approaches
• Synaptic vesicle exocytosis — calcium-triggered fusion mechanisms; role of SNAP-25 domain topology
• Structure-activity relationship studies — hexapeptide vs. octapeptide SNARE affinity comparisons

Specifications

Reconstitution

SNAP-8 arrives as lyophilized powder and must be reconstituted with bacteriostatic water prior to use. Use the formula:

Total mg ÷ Volume added (mL) = Concentration (mg/mL)

Example: 10mg vial + 2mL BAC water = 5mg/mL solution

Reconstituted peptide should be stored at 2–8°C and used within 28–30 days.

Protocol Notes

Published in vitro and cosmeceutical research provides the following reference frameworks — not instructions for use:

• Dose range: 50–500mcg/mL concentration range in in vitro neuromuscular junction assay systems
• Application: Topical formulation research predominates in published literature; in vitro cell models use aqueous solution
• Study duration: Acute (single timepoint) to 28-day repeated application in cosmeceutical efficacy models

Research Stacks

SNAP-8 is commonly paired in research settings with:

• GHK-Cu — GHK-Cu stimulates collagen and elastin synthesis and activates tissue remodeling gene programs; pairing with SNAP-8’s SNARE complex interference allows researchers to study combined approaches targeting both the structural matrix and the neuromuscular signaling that drives dynamic wrinkle formation.
• GLOW — GLOW is a multi-peptide blend designed for dermal research applications; combining with SNAP-8 is used in studies examining whether SNARE-mediated acetylcholine inhibition at the dermal junction acts additively with broader peptide-driven matrix renewal programs.
• Melanotan 1 — Melanotan 1 selectively activates MC1R on melanocytes to regulate pigmentation and has demonstrated photoprotective properties in research models. Pairing with SNAP-8 is used in dermal studies examining simultaneous pigmentation regulation and neuromuscular relaxation at the skin surface.

Purity Guarantee

Every batch is ≥99% purity. If you independently test your compound and the results don’t match — send us the COA and we’ll issue store credit, no questions asked.