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 MOTS-c improves insulin sensitivity, enhances glycolysis, reduces oxidative stress, and shows protective effects in models of metabolic syndrome, aging, and ischemia-reperfusion injury8135146, PT-141 is FDA-approved for treatment of hypoactive sexual desire disorder in premenopausal women and is studied for sexual dysfunction in other populations, increasing sexual desire via CNS melanocortin pathways42101.
While MOTS-c works as a 16-amino-acid mitochondrial-derived peptide that translocates to the nucleus under metabolic stress and regulates glucose and lipid metabolism largely via activation of AMPK and modulation of mTOR and folate-cycle–linked pathways854140146, PT-141 is the synthetic melanocortin receptor agonist bremelanotide, an analog of α-MSH that activates central MC3R and MC4R to modulate neuronal circuits governing sexual desire and arousal3242101.
MOTS-c
MT-RNR1
PT-141
POMC
MOTS-c and PT-141 are noticeably different, with limited direct overlap in their usual biological context. Their typical research and application settings separate fairly clearly: MOTS-c is more often discussed in the realm of Metabolic and endocrine and Aging and longevity, whereas PT-141 is more often associated with the realm of Reproductive health. They also influence different molecular systems, with MOTS-c tracking more closely to Mitochondrial membrane while PT-141 centers more on GPCR receptor. MOTS-c has a more mitochondrial-encoded origin, while PT-141 is closer to synthetic analog background and their development context also differs, with MOTS-c in Preclinical development while PT-141 is approved. MOTS-c takes the form of a linear peptide, whereas PT-141 is closer to a cyclic peptide, PT-141 incorporates acetylation features that are not part of MOTS-c; while their sequence patterns also diverge, with MOTS-c showing hydrophobic domain features and PT-141 showing protein-mimetic sequence features.
No related articles are linked to these peptides yet.