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 Epitalon is reported to increase lifespan and reduce tumor incidence in animals, and to influence differentiation of neural and mesenchymal stem cells; is studied as an epigenetic regulatory peptide36, Liraglutide is approved for type 2 diabetes and weight management, improving glycemic control and inducing weight loss through GLP-1–mediated insulinotropic, glucagonostatic, and appetite-suppressing actions6880.
While Epitalon works as a synthetic tetrapeptide, Ala-Glu-Asp-Gly (AEDG), that has been shown to bind histones and modulate gene expression and chromatin state, with reported effects on pineal function, neurogenesis, and longevity in animal models36, Liraglutide is a human GLP-1 analog with a single amino-acid substitution (Lys34→Arg) and a C16 palmitoyl fatty acid attached to Lys26 via a glutamate linker, producing a long-acting GLP-1 receptor agonist6880.
Epitalon
Not assigned in the current dataset.
Liraglutide
GCG
Epitalon and Liraglutide are noticeably different, with limited direct overlap in their usual biological context. Their typical research and application settings separate fairly clearly: Epitalon is more often discussed in the realm of Aging and longevity, whereas Liraglutide is more often associated with the realm of Metabolic and endocrine. Their biological logic is quite different: Epitalon is a signaling modulator and a gene expression modulator, whereas Liraglutide is a receptor agonist and a hormone analog. Both are synthetic in origin and their development context also differs, with Epitalon approved for Research use only while Liraglutide is approved. Epitalon takes the form of a linear peptide, whereas Liraglutide is closer to a peptide conjugate, while Liraglutide incorporates palmitoylation features that are not part of Epitalon.