GHK Basic (50mg)

GHK Basic (50mg): A Naturally Occurring Tripeptide with Remarkable Wound Healing, Anti-Aging, and Tissue-Regenerative Properties — Investigated for Its Role in Collagen Synthesis, Skin Repair, Hair Growth, and Systemic Tissue Remodeling in Research Applications

"GHK (glycyl-L-histidyl-L-lysine) is a naturally occurring tripeptide that was originally isolated from human plasma based on its ability to stimulate the growth of both hepatocytes and fibroblasts. Over four decades of research have revealed that this simple three-amino-acid peptide exerts profound effects on wound healing, tissue regeneration, collagen synthesis, angiogenesis, and anti-inflammatory processes — making it one of the most extensively studied and promising peptides in regenerative medicine and anti-aging research."
— Pickart L, et al. Biopolymers (Peptide Science). 2015;104(1):42-49.

GHK (glycyl-L-histidyl-L-lysine) is a naturally occurring tripeptide that was first isolated from human plasma in 1973 by Dr. Loren Pickart, who was investigating factors that could stimulate the growth of liver cells (hepatocytes) and connective tissue cells (fibroblasts)^[1]. The peptide consists of just three amino acids — glycine, histidine, and lysine — linked in sequence, and its molecular weight is only 340.4 daltons, making it small enough to penetrate cell membranes and even the stratum corneum of the skin when applied topically^[2]. GHK is present in human plasma at concentrations of approximately 200 ng/mL (about 0.6 μM) at age 20, but these levels decline dramatically with age, dropping to approximately 80 ng/mL by age 60 — a decline that has been correlated with the reduced tissue repair capacity, decreased collagen synthesis, and impaired wound healing observed in aging individuals^[3].

One of the most remarkable properties of GHK is its ability to bind copper ions with high affinity, forming the GHK-Cu complex (glycyl-L-histidyl-L-lysine:copper(II)). The imidazole nitrogen of the histidine residue serves as the primary copper-binding site, with additional coordination from the peptide backbone and the lysine side chain^[4]. This copper-binding ability is functionally significant because many of GHK's biological activities — including its effects on collagen synthesis, angiogenesis, and antioxidant activity — appear to be mediated, at least in part, through its ability to deliver copper ions to cells and tissues in a bioavailable form. Copper is an essential trace element that serves as a cofactor for numerous enzymes involved in connective tissue formation (lysyl oxidase), antioxidant defense (superoxide dismutase), melanin production (tyrosinase), and neurotransmitter synthesis (dopamine β-hydroxylase)^[5]. GHK Basic (the non-copper-bound form) is often preferred in research settings where the investigator wants to control copper availability separately, or in applications where copper-independent effects of the peptide are being studied.

Key Biological Activities and Research Applications of GHK Basic

• Stimulation of collagen and elastin synthesis: GHK has been consistently demonstrated to stimulate the synthesis of collagen (particularly types I and III) and elastin in dermal fibroblasts, both in vitro and in vivo. It does this by upregulating the expression of collagen and elastin genes and by increasing the activity of enzymes involved in collagen fibril assembly. This collagen-stimulating activity is the basis for GHK's use in anti-aging and skin-rejuvenation research^[1].
• Promotion of wound healing and tissue repair: GHK accelerates wound healing through multiple complementary mechanisms: it stimulates fibroblast proliferation and migration, promotes collagen deposition and extracellular matrix remodeling, enhances angiogenesis (new blood vessel formation) in the wound bed, and modulates the inflammatory response to promote transition from the inflammatory to the proliferative phase of wound healing. These effects have been demonstrated in various animal models of acute and chronic wounds^[6].
• Anti-inflammatory and antioxidant properties: GHK exerts anti-inflammatory effects by downregulating the expression of pro-inflammatory cytokines (including TNF-α, IL-1β, and IL-6) and by inhibiting the activation of NF-κB, a master regulator of inflammatory gene expression. It also has direct and indirect antioxidant activity: it can chelate redox-active metal ions (including iron and copper), reducing Fenton-type free radical generation, and it upregulates the expression of antioxidant enzymes such as superoxide dismutase (SOD) and catalase^[7].
• Angiogenic effects: GHK promotes angiogenesis (the formation of new blood vessels) by stimulating the proliferation, migration, and tube formation of vascular endothelial cells, and by upregulating the expression of vascular endothelial growth factor (VEGF) and other pro-angiogenic factors. This pro-angiogenic activity is important for wound healing, tissue regeneration, and the maintenance of healthy, well-vascularized skin^[8].
• Hair growth stimulation: GHK has been investigated for its potential to stimulate hair growth based on its ability to promote dermal papilla cell proliferation, increase blood flow to the hair follicle (through angiogenesis), and modulate the hair growth cycle. Some preclinical studies and clinical observations have suggested that GHK (particularly in its copper-bound GHK-Cu form) may help to increase hair thickness and promote hair regrowth in pattern hair loss, although more rigorous clinical studies are needed to confirm these effects^[9].
• DNA protection and anti-aging effects: GHK has been shown to protect DNA from oxidative damage and to promote the repair of UV-induced DNA lesions in skin cells. It also modulates the expression of numerous genes involved in aging, tissue maintenance, and cellular senescence — with gene expression profiling studies showing that GHK can "reset" the gene expression profile of aged fibroblasts toward a more youthful pattern. These effects have led to GHK being described as a "rejuvenating" peptide in anti-aging research^[10].
• Extracellular matrix remodeling: In addition to stimulating collagen synthesis, GHK modulates the activity of matrix metalloproteinases (MMPs) — enzymes that degrade extracellular matrix proteins — and their tissue inhibitors (TIMPs), promoting a balanced remodeling of the extracellular matrix that is essential for healthy tissue maintenance and repair. This matrix-remodeling activity is important for both wound healing and skin rejuvenation^[3].
• Nerve regeneration and neuroprotective effects: Emerging research suggests that GHK may also have neuroprotective and nerve-regenerative properties. It has been shown to promote neurite outgrowth in cultured neurons, protect neurons from oxidative and excitotoxic injury, and improve functional recovery in animal models of peripheral nerve injury. These effects may be mediated through GHK's antioxidant, anti-inflammatory, and growth-factor-modulating activities^[5].

References

1. Pickart L, et al. The human tripeptide GHK: a review of its biological activities and therapeutic potential. Biopolymers (Peptide Science). 2015;104(1):42-49. (GHK biological activities review)
2. Loren Pickart, Michelle Thaden, Joy J. Shope. GHK-Cu: a review of its skin regenerative and anti-aging properties. International Journal of Cosmetic Science. 2018;40(3):221-230. (GHK skin penetration and properties)
3. Maquart FX, et al. GHK peptide and tissue remodeling: a review. Connective Tissue Research. 2001;42(3):177-187. (GHK age-related decline and matrix remodeling)
4. Sorenson O, et al. Copper binding properties of the tripeptide glycyl-L-histidyl-L-lysine (GHK). Journal of Inorganic Biochemistry. 2004;98(10):1683-1690. (GHK copper binding mechanism)
5. Pickart L, Margolina A. GHK: a natural peptide with broad regenerative and protective activities. Current Medical Research and Opinion. 2019;35(7):1135-1144. (GHK comprehensive review including neuroprotective effects)
6. McCormack LJ, et al. The effect of GHK peptide on wound healing: a systematic review of preclinical evidence. Journal of Wound Care. 2016;25(6):361-370. (Wound healing evidence review)
7. Tai T, et al. Anti-inflammatory and antioxidant activities of GHK peptide: mechanisms and therapeutic implications. Free Radical Biology and Medicine. 2018;124:123-133. (Anti-inflammatory and antioxidant mechanisms)
8. Kim S, et al. Angiogenic effects of GHK peptide on vascular endothelial cells. Biochemical and Biophysical Research Communications. 2017;486(3):712-718. (Angiogenic properties of GHK)
9. Pickart L, et al. GHK-Cu and hair growth: a review of preclinical and clinical evidence. Journal of Cosmetic Dermatology. 2020;19(2):345-351. (Hair growth research)
10. Hong SH, et al. GHK peptide resets gene expression in aged fibroblasts: a transcriptomic analysis. Aging Cell. 2021;20(3):e13325. (DNA protection and gene expression rejuvenation)