Comparison

Retatrutide vs Semax

Function

While Retatrutide is an investigational agent that produces very large body-weight reductions in early trials by simultaneously engaging GLP-1R, GIPR, and GCGR to enhance satiety, energy expenditure, and glycemic control2575, Semax is used clinically in Russia for ischemic stroke and cognitive disorders; in models it improves learning, protects dopaminergic neurons, and modulates stress responses without significant endocrine ACTH-like effects166174.

Mechanism

While Retatrutide works as a triple incretin agonist peptide derived from a GIP backbone and engineered to activate GLP-1, GIP, and glucagon receptors, with non-natural residues and fatty-acid conjugation that confer long half-life and balanced multi-receptor signaling256575, Semax is a synthetic heptapeptide, Met-Glu-His-Phe-Pro-Gly-Pro (MEHFPGP), that is an analog of ACTH(4–10) with a Pro-Gly-Pro extension and exerts neurotrophic and neuroprotective actions partly via upregulation of BDNF and modulation of dopaminergic and glutamatergic systems40162165174.

Length and Sequence

Retatrutide is 39 amino acids long, whereas Semax is shorter as it has a length of 7 amino acids. Retatrutide is made up of a sequence of sequence data not available in the current dataset. Semax is made up of a sequence of Methionine, Glutamic acid, Histidine, Phenylalanine, Proline, Glycine, Proline.

Receptor

Retatrutide

GLP-1 receptor (GLP1R), GIP receptor (GIPR), and glucagon receptor (GCGR) 256575

Semax

Targets are not fully defined; interacts with melanocortin-related pathways and inhibits certain peptidases, but no single dominant receptor has been established174

Organism or Origin

Retatrutide

Synthetic multi-agonist peptide inspired by human incretins and glucagon657580

Semax

Synthetic analog of human ACTH(4–10) derived from POMC1748190

Gene

Retatrutide

Not assigned in the current dataset.

Semax

POMC

Sources

25What is the mechanism of action of Retatrutide? - Patsnap Synapse, https://synapse.patsnap.com/article/what-is-the-mechanism-of-action-of-retatrutide
65Retatrutide Molecular Structure and Properties | Peptide Protocol Wiki, https://www.peptideprotocolwiki.com/peptides/retatrutide/molecule
75Retatrutide: The Triple Hormone Agonist (GLP-1/GIP/Gluc, https://formblends.com/research/glp-1/retatrutide-triple-agonist-guide
80GLP-1 Localisation and Proglucagon Gene Expression in ..., https://pmc.ncbi.nlm.nih.gov/articles/PMC6200298/
40Semax ACTH(4-10) Analog Peptide ≥99% | VivePeptides, https://vivepeptides.com/product/semax/
81Proopiomelanocortin (POMC), the ACTH/melanocortin precursor, is ..., https://pmc.ncbi.nlm.nih.gov/articles/PMC2253185/
90alpha-Melanocyte stimulating hormone: production and degradation, https://pmc.ncbi.nlm.nih.gov/articles/PMC3936413/
162Semax 0.1% 10 mg | SEMAX POLAND, https://semaxpolska.com/en/semax-01-10-mg/
166The neuroprotective effects of Semax in conditions ..., https://pubmed.ncbi.nlm.nih.gov/15341218/
170Semax, https://pubchem.ncbi.nlm.nih.gov/compound/Met-Glu-His-Phe-Pro-Gly-Pro
171Semax peptide - NovoPro Bioscience Inc., https://www.novoprolabs.com/p/acth4-10-317047.html
174Semax - Wikipedia, https://en.wikipedia.org/wiki/Semax