Acetyl tetrapeptide-5
is used in cosmetic eye formulations to decrease puffiness, eye bags, and dark circles by reducing edema and protecting proteins such as SOD from glycation
Alanine
Ala / A · hydrophobic residue · neutral charge
AOD-9604
is studied as an anti-obesity peptide that can reduce weight gain and increase fat oxidation in obese animal models with generally neutral effects on IGF-1 and glucose metabolism in early human trials
Arginine
Arg / R · basic residue · positive charge
Argireline
is a topical cosmetic peptide reported to decrease dynamic wrinkles by partially mimicking the mechanism of botulinum toxin in a non-invasive manner
Asparagine
Asn / N · polar residue · neutral charge
Aspartic acid
Asp / D · acidic residue · negative charge
BPC-157
is investigated for accelerating healing of gastrointestinal mucosa, tendons, ligaments, bone, and nervous tissue in preclinical models, with anti-inflammatory and pro-angiogenic effects
Comparison
While GHK-Cu acts as a tissue-remodeling and wound-healing signal, enhancing skin regeneration, angiogenesis, and repair while reducing inflammation and oxidative damage in experimental models31383, 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.
While GHK-Cu works as an endogenous tripeptide, Gly-His-Lys, that chelates Cu²⁺ and modulates gene expression, stimulating collagen, elastin, proteoglycan, and glycosaminoglycan synthesis while exerting antioxidant and anti-inflammatory effects31383, Sermorelin is 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.
GHK-Cu
Not assigned in the current dataset.
Sermorelin
GHRH
GHK-Cu and Sermorelin are noticeably different, with limited direct overlap in their usual biological context. Both are often discussed in Aging and longevity contexts, while GHK-Cu is more of a signal peptide and Matrikine and Sermorelin is better described as a hormone peptide. They also influence different molecular systems, with GHK-Cu tracking more closely to Extracellular matrix proteins while Sermorelin centers more on Growth hormone axis. GHK-Cu has a more natural endogenous origin, while Sermorelin is closer to synthetic analog background and their development context also differs, with GHK-Cu cosmetic grade while Sermorelin is approved. Sermorelin incorporates amidation features that are not part of GHK-Cu, while their sequence patterns also diverge, with GHK-Cu showing protein-mimetic sequence features and Sermorelin showing alpha-helical domain features.