Peptable

Comparison

Humanin vs Matrixyl

Function

While Humanin exerts neuroprotective and cytoprotective effects in models of Alzheimer’s disease, ischemia, and metabolic stress, reducing apoptosis and improving cell survival7136141, Matrixyl is a widely used cosmetic peptide with evidence of stimulating extracellular matrix synthesis and reducing wrinkle appearance in skin-care formulations48.

Mechanism

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, Matrixyl is a palmitoylated pentapeptide, Pal-Lys-Thr-Thr-Lys-Ser (Pal-KTTKS), that acts as a matrikine, signaling to dermal fibroblasts to increase production of collagen, elastin, fibronectin, and other ECM components4858.

Receptor

Humanin

Binds a trimeric cytokine receptor complex consisting of CNTFR, WSX-1, and gp130, and can also signal via the G-protein–coupled receptor FPRL1/FPR2136141

Matrixyl

Not clearly established in the current dataset.

Organism or Origin

Humanin

Human mitochondrial peptide encoded within the 16S rRNA gene region7685

Matrixyl

Synthetic lipopeptide derived from a collagen I C-terminal fragment sequence5158

Gene

Humanin

MT-RNR2

Matrixyl

Not assigned in the current dataset.

Summary

Humanin and Matrixyl are noticeably different, with limited direct overlap in their usual biological context. 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 Matrixyl is more often associated with the realm of Dermatology and aesthetics. They also influence different molecular systems, with Humanin tracking more closely to GPCR receptor while Matrixyl centers more on Extracellular matrix proteins. Humanin has a more mitochondrial-encoded origin, while Matrixyl is closer to synthetic design background and their development context also differs, with Humanin in Preclinical development while Matrixyl is cosmetic grade. Humanin takes the form of a linear peptide, whereas Matrixyl is closer to a peptide conjugate, Matrixyl incorporates palmitoylation features that are not part of Humanin; while their sequence patterns also diverge, with Humanin showing alpha-helical domain features and Matrixyl showing protein-mimetic sequence features.

Related articles

No related articles are linked to these peptides yet.

Sources

7Evidence of natural selection in the mitochondrial-derived peptides ..., https://www.nature.com/articles/s41598-023-41053-0
53Frequently Asked Questions, https://www.peptidejournal.org/peptides/humanin-mitochondrial-peptide-research
76Humanin - Wikipedia, https://en.wikipedia.org/wiki/Humanin
85MT-RNR2 - Wikipedia, https://en.wikipedia.org/wiki/MT-RNR2
141Humanin: a harbinger of mitochondrial-derived peptides? - PMC - NIH, https://pmc.ncbi.nlm.nih.gov/articles/PMC3641182/
48Palmitoyl Pentapeptide-4 - R&D PEPTIDE.ONE, https://rnd.peptide.one/product/palmitoyl-pentapeptide-4-pal-lys-thr-thr-lys-ser/
51[PDF] Acetyl tetrapeptide-5 - SkinMiles, https://skinmiles.com/wp-content/uploads/2017/12/Matriskin-Ingredients.pdf
58[PDF] Safety Assessment of Myristoyl Pentapeptide-4, Palmitoyl ..., https://www.cir-safety.org/sites/default/files/Pentapeptide%20Ingredients.pdf