Comparison

Sermorelin vs Snap-8

Function

While Sermorelin is used as a diagnostic agent for assessing GH secretory capacity and as a research tool or off-label therapy to increase endogenous GH in GH-deficient or age-related contexts1727, Snap-8 is a cosmetic peptide studied for reducing wrinkle depth by inhibiting synaptic vesicle fusion and subsequent muscle contraction in facial expression muscles5060.

Mechanism

While Sermorelin works as a synthetic 29-amino-acid peptide identical to the 1–29 N-terminal fragment of human GHRH that stimulates GH synthesis and secretion by binding pituitary GHRH receptors1727120, Snap-8 is acetyl octapeptide-3 (Ac-Glu-Glu-Met-Gln-Arg-Arg-Ala-Asp-NH2), an extended analog of Argireline derived from the N-terminal region of SNAP-25 that competes with native SNAP-25 for binding to syntaxin-1, forming a non-functional SNARE complex and reducing neurotransmitter release5060.

Length and Sequence

Sermorelin is 29 amino acids long, whereas Snap-8 is shorter as it has a length of 8 amino acids. Sermorelin is made up of a sequence of Tyrosine, Alanine, Aspartic acid, Alanine, Isoleucine, Phenylalanine, Threonine, Asparagine, Serine, Tyrosine, Arginine, Lysine, Valine, Leucine, Glycine, Glutamine, Leucine, Serine, Alanine, Arginine, Lysine, Leucine, Leucine, Glutamine, Aspartic acid, Isoleucine, Methionine, Serine, Arginine. Snap-8 is made up of a sequence of Glutamic acid, Glutamic acid, Methionine, Glutamine, Arginine, Arginine, Alanine, Aspartic acid.

Receptor

Sermorelin

Growth hormone–releasing hormone receptor (GHRHR) on pituitary somatotrophs94103120

Snap-8

Targets the SNARE complex (SNAP-25–syntaxin interaction) rather than a cell-surface receptor5060

Organism or Origin

Sermorelin

Synthetic peptide corresponding to human hypothalamic GHRH(1–29) 17120

Snap-8

Fully synthetic SNAP-25–derived peptide used in topical anti-wrinkle products5060

Gene

Sermorelin

GHRH

Snap-8

Not assigned in the current dataset.

Related articles

No related articles are linked to these peptides yet.

Sources

17Sermorelin - Wikipedia, https://en.wikipedia.org/wiki/Sermorelin
27Sermorelin, https://pubchem.ncbi.nlm.nih.gov/compound/Sermorelin
94Growth-hormone-releasing hormone receptor - Wikipedia, https://en.wikipedia.org/wiki/Growth-hormone-releasing_hormone_receptor
103Growth-hormone-releasing hormone receptor - Wikipedia, https://en.wikipedia.org/wiki/Growth_hormone_releasing_hormone_receptor
120Growth hormone–releasing hormone - Wikipedia, https://en.wikipedia.org/wiki/Growth_hormone%E2%80%93releasing_hormone
50SNAP-8 (Acetyl Octapeptide-3) Peptide Overview - Kimera Chems, https://kimerachems.co/product/snap-8-acetyl-octapeptide-3/
60SNAP-8 (Acetyl Octapeptide-3): The Topical Anti-Wrinkle | FormBlends, https://formblends.com/research/specialty/snap8-anti-aging-peptide