Description

Palmitoyl Tetrapeptide-7: Anti-Aging and Skin Benefits

What is Palmitoyl Tetrapeptide-7?

Palmitoyl Tetrapeptide-7 is a small synthetic peptide composed of four amino acids: palmitoyl, glycine, glutamine, and arginine. It is a peptide analog of natural matrikines, which regulate extracellular matrix (ECM) turnover and related cellular processes.

This peptide may stimulate ECM component synthesis, including collagen and elastin, while inhibiting pro-inflammatory cytokines. It is also thought to modulate gene expression related to ECM remodeling, cell proliferation, and inflammation.

Additionally, Palmitoyl Tetrapeptide-7 may suppress interleukin-6 (IL-6), a cytokine that contributes to skin cell aging, apoptosis, and ECM degradation. By reducing IL-6, the peptide may help maintain skin flexibility and barrier integrity.

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Chemical Information

• Molecular Formula: C34H62N8O7

• Molecular Weight: 694.9 g/mol

• Other Names: Pal-Gly-Gln-Pro-Arg-OH, N-Palmitoylrigin, Palmitoyl-GQPR, Rigin

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Mechanism of Action

Research suggests that Palmitoyl Tetrapeptide-7 inhibits matrix metalloproteinases (MMPs), enzymes that degrade ECM proteins during normal tissue growth. By downregulating MMPs, it may prevent ECM damage and allow cells to restore and maintain skin structure.

The peptide may stimulate production of laminin IV and V and collagen VII. Laminins support basement membrane stability, while collagen VII anchors fibrils connecting the dermis to the epidermis. By enhancing these molecules, Palmitoyl Tetrapeptide-7 may improve skin resilience and barrier repair.

Moreover, the peptide may reduce IL-6 secretion, diminishing inflammation caused by UVB exposure or environmental stressors.

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Potential Oral Health Benefits

Due to its inhibitory effects on MMPs, Palmitoyl Tetrapeptide-7 may protect ECM proteins in the oral cavity. Excessive MMP activity can damage tissues and contribute to conditions such as periodontitis, caries, or oral cancer. By modulating MMPs, the peptide might slow the progression of these oral ailments and preserve tissue integrity.

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Skin Repair and Anti-Aging Effects

Palmitoyl Tetrapeptide-7 may stimulate collagen synthesis and exert anti-inflammatory effects, reducing skin damage caused by UV radiation and pollution.

Studies suggest combining Palmitoyl Tetrapeptide-7 with Palmitoyl Oligopeptide (Matrixyl 3000) enhances collagen production and decreases inflammation. This combination may improve skin texture and reduce the depth and length of wrinkles along the epidermal barrier.

Specifically, the peptide targets collagen type VII, crucial for dermal-epidermal stability and wound healing. Collagen VII maintains the connection between the epidermis and dermis, preventing blistering disorders and supporting tissue repair.

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Clinical Studies on Wrinkle Reduction

In a 12-week, double-blind, placebo-controlled study, participants applied a Palmitoyl Tetrapeptide-7 cream twice daily. Results indicated reduced wrinkle depth and length compared to the placebo, along with improved skin elasticity.

Another study over four weeks reported a 14.07% reduction in fine wrinkles and an 8.79% increase in skin elasticity. Dermal density also increased by 27.63%, showing significant improvement in ECM and overall skin health.

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References

1. National Center for Biotechnology Information (2023). PubChem Compound Summary for CID 10078408, Palmitoyl tetrapeptide-7.
2. Mondon P, Hillion M, Peschard O, Andre N, Marchand T, Doridot E, Feuilloley MG, Pionneau C, Chardonnet S. Evaluation of dermal extracellular matrix and epidermal-dermal junction modifications using matrix-assisted laser desorption/ionization mass spectrometric imaging, in vivo reflectance confocal microscopy, echography, and histology: effect of age and peptide applications. J Cosmet Dermatol. 2015 Jun;14(2):152-60. doi: 10.1111/jocd.12135. Epub 2015 Mar 27. PMID: 25817264. https://pubmed.ncbi.nlm.nih.gov/25817264/
3. Sorsa T, Tjäderhane L, Salo T. Matrix metalloproteinases (MMPs) in oral diseases. Oral Dis. 2004 Nov;10(6):311-8. doi: 10.1111/j.1601-0825.2004.01038.x. PMID: 15533204. https://pubmed.ncbi.nlm.nih.gov/15533204/
4. Resende, Diana I S P et al. “Usage of Synthetic Peptides in Cosmetics for Sensitive Skin.” Pharmaceuticals (Basel, Switzerland) vol. 14,8 702. 21 Jul. 2021, doi:10.3390/ph14080702
5. Matrixyl 3000 (palmitoyl oligopeptide & palmitoyl tetrapeptide-7): Back to the future of skin care.
6. Marta Salvador-Ferreira et al. Trending Anti-Aging Peptides. MDPI Journal, Vol 7, Issue 4. https://www.mdpi.com/2079-9284/7/4/91
7. Hahn Hyung Jin et al. Instrumental evaluation of anti‑aging effects of cosmetic formulations containing palmitoyl peptides, Silybum marianum seed oil, vitamin E and other functional ingredients on aged human skin, Experimental and Therapeutic Medicine, Jun 2016.