Peptable

Comparison

Acetyl tetrapeptide-5 vs Thymosin Beta-4

Function

While 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 glycation51150159154, Thymosin Beta-4 promotes wound healing, angiogenesis, and tissue regeneration in preclinical models via effects on cytoskeleton dynamics, cell migration, and anti-apoptotic pathways25579.

Mechanism

While Acetyl tetrapeptide-5 works as a synthetic tetrapeptide, Ac-βAla-His-Ser-His (Eyeseryl), with reported ACE-1 inhibition and anti-glycation activity, proposed to improve microcirculation and reduce capillary permeability and fluid accumulation in periorbital tissues51150159157, Thymosin Beta-4 is an endogenous 43-amino-acid actin-sequestering peptide that maintains a pool of G-actin monomers and regulates actin polymerization, thereby influencing cell migration, proliferation, and differentiation25579.

Receptor

Acetyl tetrapeptide-5

Acts as an enzyme inhibitor (eg, ACE-1, glycation-related pathways) rather than via a specific membrane receptor51159

Thymosin Beta-4

Binds actin monomers (G-actin) at both barbed and pointed ends to sterically block polymerization55

Organism or Origin

Acetyl tetrapeptide-5

Fully synthetic cosmetic peptide (Eyeseryl) 150157

Thymosin Beta-4

Human and other mammals (ubiquitous cytosolic peptide) 7988

Gene

Acetyl tetrapeptide-5

Not assigned in the current dataset.

Thymosin Beta-4

TMSB4X

Summary

Both peptides fall into a similar broad context as Signal peptides, although the details of how they are used and discussed still diverge. Both are often discussed in Dermatology and aesthetics contexts, while Acetyl tetrapeptide-5 is more of a signal peptide and Thymosin Beta-4 is better described as a cytokine peptide. Both appear to work through Signaling modulator, but the functional emphasis still separates, with Acetyl tetrapeptide-5 leaning toward Anti-inflammatory and Thymosin Beta-4 leaning toward Tissue repair and healing and Angiogenesis modulation. Acetyl tetrapeptide-5 has a more synthetic design origin, while Thymosin Beta-4 is closer to natural endogenous background and their development context also differs, with Acetyl tetrapeptide-5 cosmetic grade while Thymosin Beta-4 is in Clinical phase 2.

Sources

51[PDF] Acetyl tetrapeptide-5 - SkinMiles, https://skinmiles.com/wp-content/uploads/2017/12/Matriskin-Ingredients.pdf
150The important eye peptide of acetyl tetrapeptide-5 - ChemicalBook, https://www.chemicalbook.com/article/the-important-eye-peptide-of-acetyl-tetrapeptide-5.htm
153Acetyl Tetrapeptide-5 (Eyeseryl) | CAS 820959-17-9 Manufacturer ..., https://www.conscientia-industrial.com/peptides/acetyl-tetrapeptide-5-eyeseryl-cas-820959-17-9
154Bioactive peptides in cosmetic formulations: Review of ..., https://www.sciencedirect.com/science/article/pii/S0196978125001019
157Effects of Peptides in Cosmetics, https://aapep.bocsci.com/resources/cosmetic-peptides.html
159Acetyl tetrapeptide-5 | ACE-1 Inhibitor | MedChemExpress, https://www.medchemexpress.com/acetyl-tetrapeptide-5.html
2TB-500 (Thymosin Beta-4) | Peptide Biologix, https://peptidebiologix.com/tb-500
12Thymosin Beta-4 vs TB-500 | What to Know in 2024, https://www.peptidesciences.com/peptide-research/thymosin-beta-4-vs-tb-500
79TMSB4X Gene: Function, Research, and Clinical Applications, https://learn.mapmygenome.in/genemap/tmsb4x
88TMSB4X thymosin beta 4, X-linked FX PTMB4 TB4X TMSB4, https://www.sigmaaldrich.com/DE/en/genes/tmsb4x