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 FOXO4-DRI acts as a senolytic in preclinical models by promoting apoptosis of senescent cells, improving tissue function and healthspan measures in aged animals38, Melanotan II is studied as a tanning and libido-enhancing agent; increases melanin production and can reduce food intake and modulate sexual arousal in animal models and humans3545.
While FOXO4-DRI works as a D-retro-inverso peptide derived from a FOXO4 region that competes with endogenous FOXO4 for binding to p53, thereby releasing p53 to trigger apoptosis selectively in senescent cells38, Melanotan II is a cyclic heptapeptide melanocortin analog (Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH2) that acts as a non-selective, high-potency agonist at MC1R, MC3R, MC4R, and MC5R, influencing pigmentation, appetite, and sexual behavior3545.
FOXO4-DRI
FOXO4
Melanotan II
POMC
FOXO4-DRI and Melanotan II are noticeably different, with limited direct overlap in their usual biological context. Their typical research and application settings separate fairly clearly: FOXO4-DRI is more often discussed in the realm of Aging and longevity, whereas Melanotan II is more often associated with the realm of Dermatology and aesthetics and Reproductive health. Their biological logic is quite different: FOXO4-DRI is a protein interaction inhibitor, whereas Melanotan II is a receptor agonist. FOXO4-DRI has a more synthetic design origin, while Melanotan II is closer to synthetic analog background with FOXO4-DRI in Preclinical development and Melanotan II approved for Research use only. FOXO4-DRI takes the form of a linear peptide, whereas Melanotan II is closer to a cyclic peptide, while FOXO4-DRI carries retro-inverso isomerization features, while Melanotan II instead reflects acetylation changes.
No related articles are linked to these peptides yet.