Description
Product Description
KLKKTETQ is a synthetic peptide sequence known for its significant role in anti-aging, skin-firming, and cell-regenerative research. It serves as a short-chain amino acid compound capable of modulating multiple pathways involved in cellular repair and collagen maintenance. Through its molecular activity, KLKKTETQ contributes to restoring the skin’s biomechanical strength and youthful appearance.
This peptide is the subject of cosmetic and dermatological studies investigating the repair of photodamaged skin, improvement of elasticity, and inhibition of premature aging caused by oxidative and inflammatory stress. KLKKTETQ’s multifunctional actions make it a promising candidate in the research of high-performance anti-aging formulations.
Peptide Signaling and Skin Renewal
KLKKTETQ works as a signaling molecule between epidermal and dermal cells, promoting fibroblast activation and extracellular matrix (ECM) reinforcement. Fibroblasts, the skin’s main structural cells, are responsible for synthesizing collagen, elastin, and fibronectin. Under the influence of KLKKTETQ, fibroblast metabolism increases, leading to improved matrix organization and enhanced tensile strength of the dermis.
Furthermore, KLKKTETQ stimulates the release of key growth mediators such as transforming growth factor-beta (TGF-β) and connective tissue growth factor (CTGF), which are known to regulate collagen biosynthesis and wound-healing responses.
Antioxidant and Protective Function
KLKKTETQ demonstrates notable antioxidant behavior in in vitro models. It helps to scavenge free radicals generated by UV radiation and environmental pollutants. This reduces lipid peroxidation and oxidative damage to skin cells, protecting the structural integrity of proteins and DNA. By minimizing oxidative stress, KLKKTETQ indirectly slows the molecular events that lead to wrinkle formation and dermal thinning.
Anti-Glycation and Matrix Preservation
Another vital mechanism of KLKKTETQ is its anti-glycation potential. Glycation occurs when sugars bind to proteins such as collagen and elastin, leading to stiffness and loss of elasticity. KLKKTETQ counteracts this process by maintaining collagen’s native conformation and preventing the formation of advanced glycation end-products (AGEs), ensuring smoother and more supple skin texture in laboratory conditions.
Hydration Support and Barrier Function
In research focusing on the skin’s moisture balance, KLKKTETQ has been associated with improved epidermal barrier integrity. It may promote the synthesis of ceramides and natural moisturizing factors (NMFs), enhancing water retention and preventing transepidermal water loss (TEWL). This dual benefit — hydration and elasticity — highlights the peptide’s multifaceted potential in cosmetic peptide development.
Research Applications
KLKKTETQ is frequently utilized in studies investigating anti-aging, anti-wrinkle, and dermal repair mechanisms. It can be combined with other peptides, antioxidants, or growth factors to achieve synergistic biological activity. Its short amino acid sequence makes it ideal for penetration and bioavailability studies in both in vitro and ex vivo models.
Overall, KLKKTETQ serves as a valuable research molecule for understanding peptide-driven regeneration pathways in the field of cosmetic dermatology.
Product Specifications
| Item | Details |
|---|---|
| Product Name | KLKKTETQ |
| CAS Number | 1054611-00-5 |
| Synonyms | Anti-aging peptide KLKKTETQ |
| Molecular Formula | C₄₄H₇₅N₁₃O₁₄ (approx.) |
| Molecular Weight | 1010.2 g/mol (approx.) |
| Purity | ≥99% |
| Appearance | White to off-white lyophilized powder |
| Solubility | Soluble in water and ethanol |
| Storage Temperature | 2–8 °C |
| Category | Cosmetic peptide |
| Applications | Anti-aging, skin repair, collagen regeneration research |
| Formulation | Suitable for serum, lotion, and cream formulation studies |
| Stability | Stable under recommended storage conditions |
| Shelf Life | 24 months |
| Supplier Type | Factory peptide supplier |
| Intended Use | For laboratory research use only |
Mechanism of Action
KLKKTETQ exerts its biological activity through several molecular pathways that contribute to anti-aging and regenerative effects. It enhances intercellular communication, promotes collagen synthesis, and provides antioxidant defense against external aggressors.
1. Collagen and ECM Remodeling
KLKKTETQ activates fibroblasts, increasing collagen type I and III synthesis, both crucial for skin strength and flexibility. It also enhances fibronectin and elastin production, ensuring proper ECM organization and maintaining dermal elasticity.
2. Suppression of Collagen-Degrading Enzymes
Matrix metalloproteinases (MMPs) are enzymes that degrade collagen and weaken dermal structure. KLKKTETQ downregulates MMP-1 and MMP-9 activity, thereby preventing collagen breakdown and maintaining ECM integrity.
3. Activation of Growth Factor Signaling
Research suggests that KLKKTETQ stimulates the TGF-β/SMAD pathway, leading to enhanced cell proliferation and improved wound-healing responses. This signaling activation helps repair micro-damage within the dermis and supports long-term skin regeneration.
4. Antioxidant and Anti-Inflammatory Protection
KLKKTETQ neutralizes reactive oxygen species (ROS) and reduces the expression of pro-inflammatory cytokines such as IL-6 and TNF-α. This action decreases oxidative stress, slows visible signs of aging, and preserves a youthful, smooth appearance in laboratory models.
5. Barrier Reinforcement
By supporting ceramide synthesis and barrier protein expression, KLKKTETQ helps retain moisture and prevents TEWL. This contributes to improved hydration, smoothness, and suppleness in skin research evaluations.
6. Cellular Communication Enhancement
The peptide improves cross-talk between dermal fibroblasts and epidermal keratinocytes, leading to synchronized renewal and recovery processes. This coordinated cellular response is vital for sustaining skin thickness and radiance.

Side Effects
In controlled laboratory environments, KLKKTETQ has exhibited excellent biocompatibility. It demonstrates minimal cytotoxicity in fibroblast cultures and shows no irritation potential in reconstructed human epidermal models. However, as with all peptides, experimental concentration and solvent selection can affect stability and bioactivity.
This compound is intended strictly for laboratory research use only and should not be used for human or veterinary purposes. It must not be administered, injected, or consumed.
Keywords
KLKKTETQ, anti-aging peptide, collagen peptide, skin regeneration peptide, cosmetic peptide supplier, high-purity cosmetic peptides, peptide wholesale China, OEM & bulk peptide production, factory peptide supplier, China peptide manufacturer
Shipping Guarantee
All shipments are handled using validated cold-chain logistics to preserve peptide integrity. Each package is sealed in moisture-proof containers with secondary protective wrapping and continuous temperature monitoring. Products are shipped via express international couriers with full tracking and insurance coverage.
Trade Assurance
We ensure product authenticity, verified ≥99% purity, and compliance with analytical standards (HPLC, MS, and NMR). Each batch is supplied with a Certificate of Analysis (CoA). Our trade assurance policy guarantees replacement or refund for any deviation from listed specifications.
Payment Support
We provide flexible and secure global payment options to support international research transactions. Accepted payment methods include PayPal, major credit cards (Visa, MasterCard, American Express), telegraphic transfer (T/T), and cryptocurrencies (USDT, Bitcoin, Ethereum). All transactions are protected by industry-standard encryption and verified payment gateways to ensure confidentiality and fund security.
Disclaimer
All products listed are intended for laboratory research use only and not for human or veterinary use. They are not drugs, medical devices, or diagnostics and should not be administered to humans or animals. Researchers must handle all materials in accordance with institutional biosafety and chemical safety guidelines. The information provided is for scientific reference only and does not imply therapeutic efficacy, safety, or regulatory approval.



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