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 Dulaglutide is a once-weekly GLP-1RA for type 2 diabetes that lowers HbA1c and body weight by enhancing glucose-dependent insulin secretion and reducing appetite6668, KPV is investigated as an anti-inflammatory and barrier-protective agent in skin and mucosal models, reducing pro-inflammatory cytokines and promoting tissue repair684.
While Dulaglutide works as a recombinant fusion protein consisting of two disulfide-linked GLP-1(7–37) analogs each covalently fused via a linker to an IgG4 Fc fragment, yielding a large, long-acting GLP-1 receptor agonist protected from DPP-4 degradation66, KPV is the C-terminal Lys-Pro-Val tripeptide fragment of α-MSH, which exerts potent anti-inflammatory effects largely via inhibition of NF-κB signaling and modulation of cytokine expression, with many actions independent of classical melanocortin receptor activation684.
Dulaglutide
GCG
KPV
POMC
Dulaglutide and KPV are noticeably different, with limited direct overlap in their usual biological context. Their typical research and application settings separate fairly clearly: Dulaglutide is more often discussed in the realm of Metabolic and endocrine, whereas KPV is more often associated with the realm of Immunology and inflammation, Gastroenterology, and Dermatology and aesthetics. They also influence different molecular systems, with Dulaglutide tracking more closely to GLP-1 receptor while KPV centers more on Melanocortin receptor. Dulaglutide has a more engineered peptide origin, while KPV is closer to natural endogenous background and their development context also differs, with Dulaglutide approved while KPV is in Preclinical development. Dulaglutide takes the form of a peptide conjugate, whereas KPV is closer to a linear peptide, while their sequence patterns also diverge, with Dulaglutide showing alpha-helical domain features and KPV showing protein-mimetic sequence features.