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 Selank is a peptide developed in Russia as an anxiolytic and nootropic; in animal models it reduces anxiety-like behavior and modulates immune parameters under stress39, Tirzepatide is approved for type 2 diabetes and obesity, producing larger HbA1c and body-weight reductions than semaglutide in head-to-head trials24.
While Selank works as a synthetic heptapeptide, Thr-Lys-Pro-Arg-Pro-Gly-Pro, that combines a tuftsin fragment with a Pro-Gly-Pro motif and is reported to modulate GABAergic neurotransmission and cytokine balance while being resistant to proteolytic degradation39, Tirzepatide is a 39-amino-acid synthetic peptide primarily based on GIP sequence with C20 fatty diacid conjugation that acts as a dual agonist at GIP and GLP-1 receptors, enhancing glucose-dependent insulin secretion, suppressing glucagon, delaying gastric emptying, and reducing appetite24.
Selank
Not clearly established in the current dataset.
Tirzepatide
Glucose-dependent insulinotropic polypeptide receptor (GIPR) and GLP-1 receptor (GLP1R) 24
Selank
Not assigned in the current dataset.
Tirzepatide
Not assigned in the current dataset.
Selank and Tirzepatide are noticeably different, with limited direct overlap in their usual biological context. Their typical research and application settings separate fairly clearly: Selank is more often discussed in the realm of Neurology and brain health and Immunology and inflammation, whereas Tirzepatide is more often associated with the realm of Metabolic and endocrine and Cardiovascular health. They also influence different molecular systems, with Selank tracking more closely to GPCR receptor while Tirzepatide centers more on GLP-1 receptor. Both are synthetic in origin and their development context also differs, with Selank approved for Research use only while Tirzepatide is approved. Selank takes the form of a linear peptide, whereas Tirzepatide is closer to a peptide conjugate, Tirzepatide incorporates lipidation and d-amino acid substitution features that are not part of Selank; while their sequence patterns also diverge, with Selank showing proline-rich features and Tirzepatide showing alpha-helical domain features.