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 KPV is investigated as an anti-inflammatory and barrier-protective agent in skin and mucosal models, reducing pro-inflammatory cytokines and promoting tissue repair684, PEG-MGF is used experimentally to enhance muscle repair and hypertrophy after mechanical overload or injury by stimulating satellite-cell activation and protein synthesis6373138.
While KPV works as 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, PEG-MGF is a poly(ethylene glycol)-conjugated form of Mechano Growth Factor (IGF-1Ec splice variant) comprising the 24-aa C-terminal E-peptide of IGF-1, designed to extend half-life while activating IGF-1 receptor–mediated anabolic signaling in muscle satellite cells637322138.
KPV
POMC
PEG-MGF
IGF1
Both peptides fall into a similar broad context as Signal peptides, although the details of how they are used and discussed still diverge. Their typical research and application settings separate fairly clearly: KPV is more often discussed in the realm of Immunology and inflammation, Gastroenterology, and Dermatology and aesthetics, whereas PEG-MGF is more often associated with the realm of Musculoskeletal health and Cardiovascular health. Both appear to work through Signaling modulator, but the functional emphasis still separates, with KPV leaning toward Anti-inflammatory and Immune regulation and PEG-MGF leaning toward Anabolic growth and Tissue repair and healing. KPV has a more natural endogenous origin, while PEG-MGF is closer to synthetic analog background and both are still best understood as being in Preclinical development. KPV takes the form of a linear peptide, whereas PEG-MGF is closer to a peptide conjugate, while PEG-MGF incorporates pegylation features that are not part of KPV.
No related articles are linked to these peptides yet.