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 Humanin exerts neuroprotective and cytoprotective effects in models of Alzheimer’s disease, ischemia, and metabolic stress, reducing apoptosis and improving cell survival7136141, LL-37 acts as a broad-spectrum antimicrobial and immunomodulatory peptide involved in host defense and wound repair, but can also promote inflammation and cancer cell proliferation in some contexts5215.
While Humanin works as a mitochondrial-derived 24-amino-acid peptide that protects cells against diverse apoptotic insults by interacting with cell-surface cytokine receptor complexes and intracellular targets, thereby activating pro-survival STAT3 and other pathways7136141, LL-37 is a cationic amphipathic 37-amino-acid cathelicidin peptide generated from hCAP18 that disrupts microbial membranes and modulates innate immunity, including chemotaxis, cytokine induction, and NET formation521586.
Humanin
LL-37
Humanin
MT-RNR2
LL-37
CAMP
The clearest overlap between Humanin and LL-37 is that both converge around Signaling modulator and GPCR receptor. Their typical research and application settings separate fairly clearly: Humanin is more often discussed in the realm of Neurology and brain health, Aging and longevity, and Cardiovascular health, whereas LL-37 is more often associated with the realm of Immunology and inflammation and Gastroenterology. Mechanistically, both point toward Signaling modulator and converge on GPCR receptor, although the downstream emphasis is not identical. Humanin has a more mitochondrial-encoded origin, while LL-37 is closer to natural endogenous background and both are still best understood as being in Preclinical development. They share some route overlap through intravenous infusion, while the remaining routes diverge.
No related articles are linked to these peptides yet.