Produktbeschreibung
What is Epithalon?
Epithalon (also known as Epitalon or AEDG) is a synthetic tetrapeptide with the sequence Ala-Glu-Asp-Gly, which is a functional analogue of the natural pineal peptide Epithalamine. This compound was developed in the early 2000s by Professor Vladimir Khavison at the Institute of Bioregulation and Gerontology in Saint Petersburg as part of a broader research program on regulatory peptides and aging processes.
The history of Epithalon dates back to research on pineal gland extracts conducted in the Soviet Union since the 1970s. Scientists noticed that administering pineal extract to aging animals led to improved health parameters and extended lifespan. Subsequent work identified the active ingredient - the tetrapeptide AEDG - which was then synthesized as Epithalon.
Structurally, Epithalon is one of the smallest biologically active peptides, consisting of just four amino acids connected by α-peptide bonds. Its molecular weight is approximately 390 Da, which allows it to interact directly with DNA and act as a regulatory factor for gene expression. In 2017, endogenous Epithalon was detected for the first time in a physiological extract of the human pineal gland, confirming its natural occurrence in the body.
The pineal gland, which is the site of Epithalon synthesis, plays a key role in regulating circadian rhythms by producing melatonin. With age, pineal gland function declines, leading to reduced synthesis of both melatonin and endogenous regulatory peptides. Epithalon is being investigated as a potential factor supporting neuroendocrine functions in the aging process.
Mechanism of action
Telomerase activation - Epithalon induces the expression of the catalytic subunit of telomerase (hTERT), the enzyme responsible for telomere lengthening. In studies on human fibroblasts, the peptide was shown to increase both hTERT mRNA levels and telomerase enzymatic activity, leading to measurable telomere lengthening in somatic cells.
Regulation of melatonin synthesis - Epithalon directly affects the production of melatonin by the pineal gland, restoring the physiological rhythm of its secretion in aging individuals. This mechanism includes modulation of the expression of genes related to the circadian rhythm and influence on the hypothalamic-pituitary axis.
Antioxidant effect - The peptide increases the activity of antioxidant enzymes, including superoxide dismutase (SOD), glutathione peroxidase (GPx) and glutathione S-transferase. This leads to the reduction of oxidative stress and protection of DNA against damage caused by reactive oxygen species.
Mitochondrial function modulation - A 2025 study showed that Epithalon improved mitochondrial health by increasing the expression of PGC-1α, SIRT-1, TFAM and BCL2 genes. The peptide reduces the intracellular level of reactive oxygen species and supports the proper structure of mitochondria.
Impact on gene expression - Epithalon interacts with histone H1, modulating chromatin structure and gene availability for the transcription apparatus. This may lead to epigenetic regulation of the expression of genes related to the processes of aging and cellular differentiation.
Directions of scientific research
Research on Epitalon focuses on its potential impact on cellular aging processes, neuroendocrine functions and protection against DNA damage.
Telomere lengthening and telomerase activation
In a landmark 2003 study, Khavinson and colleagues showed that the addition of Epithalon to cultures of human fetal fibroblasts, originally lacking telomerase activity, induced hTERT expression and telomere lengthening. Cells treated with the peptide exceeded the Hayflick limit, continuing to divide beyond the normal point of replicative senescence. A 2025 study (Al-dulaimi et al.) confirmed these observations by documenting a dose-dependent increase in telomere length in normal epithelial cells and fibroblasts through hTERT upregulation.
Longevity research
In experiments on rodents, Epithalon extended the life of mice and rats, especially those predisposed to accelerated aging or a high risk of cancer. A prospective cohort study of 266 people over 60 years of age showed that treatment with Epithalamine (the pineal extract from which Epithalon is derived) reduced mortality by 1.6-1.8-fold over 6 years of observation, and in combination with thymalin - by 2.5-fold.
Neuroendocrine functions and melatonin
Studies in aging monkeys and humans have shown that Epithalon restores melatonin secretion by the pineal gland to levels typical of younger individuals. In clinical trials, patients aged 60-80 receiving the peptide showed normalization of the circadian rhythm of melatonin and improvement in sleep quality.
Protection against DNA damage
In a study on patients with pulmonary tuberculosis, Epithalon did not correct existing chromosomal aberrations, but showed a protective effect against the formation of new lesions. In neuroblastoma cells, the peptide reduced the level of 8-hydroxydeoxyguanosine (8-OHdG), a marker of oxidative DNA damage.
Reproductive functions and embryology
A 2025 study (Ullah et al.) showed that Epithalon stimulates telomerase activity in bovine cumulus cells and cumulus-oocyte complexes, accelerating oocyte maturation by improving mitochondrial health. Peptide treatment significantly improved post-thaw expansion and hatching rates of embryos.
Scientific context
Epithalon belongs to a class of bioregulatory peptides developed as part of the Russian aging research program. Related compounds include:
- Thymalin - thymus peptide supporting immune functions
- Cortexin - cerebral cortex peptide with neuroprotective effects
- Retinalamin - retinal peptide used in eye diseases
Compared to other approaches to telomerase activation, Epithalon stands out for its structural simplicity and good bioavailability. Unlike gene therapy or HDAC inhibitors, the peptide acts directly at the hTERT transcription level without modifying the genome.
For 25 years since its synthesis was patented, Epithalon has been the subject of numerous in vitro, in vivo and in silico studies. Despite statistically significant geroprotective and neuroendocrine effects demonstrated, the exact mechanism of action remains unclear. The peptide is approved for clinical use in Russia, but does not have FDA or EMA registration.
Research safety profile
General tolerance - Epithalon has demonstrated a good safety profile in clinical trials conducted in Russia for over 30 years. No serious adverse events causally related to the administration of the peptide have been reported.
Side effects - Rarely observed side effects include: anxiety, vivid dreams, fatigue or mild euphoria, headaches and dizziness, changes in sleep patterns, and local reactions at the injection site (redness, swelling).
Theoretical Concerns - Due to the mechanism of telomerase activation, there are theoretical concerns regarding the potential promotion of tumor growth. However, studies in mice showed that Epithalon reduced the incidence of spontaneous tumors by 2.6-fold and exhibited oncostatic and anti-metastatic properties. Nevertheless, caution is recommended in people with active cancer.
Regulatory status - Epithalon is not approved by the FDA or EMA for clinical use. In Russia, it has been used in clinical practice since the 1990s. In December 2023, the FDA expressed safety concerns related to some peptide substances nominated for pharmacy formulations, including in the context of telomerase activators.
Bibliography - latest scientific research
- Araj SK et al. Overview of Epitalon—Highly Bioactive Pineal Tetrapeptide with Promising Properties. Int J Mol Sci 2025;26(6):2691. PubMed
- Al-dulaimi S et al. Epitalon increases telomere length in human cell lines through telomerase upregulation or ALT activity. Biogerontology. 2025;26(1):27. PubMed
- Ullah S et al. Epitalon-activated telomerase enhances bovine oocyte maturation rate and post-thawed embryo development. Life Sci. 2025;361:123291. PubMed
- Gatta M et al. The Antioxidant Tetrapeptide Epitalon Enhances Delayed Wound Healing in an in Vitro Model of Diabetic Retinopathy. Stem Cell Rev Rep 2025;21(2):567-580. PubMed
- Ivko OM et al. Peptidergic regulation of expression of cellular aging marker proteins in buccal epithelium. Adv Gerontol. 2024;37(3):211-218. PubMed
- Yue X et al. Epitalon protects against post-ovulatory aging-related damage of mouse oocytes in vitro. Aging. 2022;14(7):3191-3202. PubMed
- Khavinson VK et al. Epithalon peptide induces telomerase activity and telomere elongation in human somatic cells. Bull Exp Biol Med. 2003;135(6):590-592. PubMed
- Anisimov VN et al. Effect of Epitalon on biomarkers of aging, life span and spontaneous tumor incidence in female Swiss-derived SHR mice. Biogerontology. 2003;4(4):193-202. PubMed
- Kraskovskaya NA et al. The effect of AEDG peptide on neuronal differentiation and neurite outgrowth. Bull Exp Biol Med. 2024;176(4):469-473. PubMed
- Avolio F et al. Peptides Regulating Proliferative Activity and Inflammatory Pathways in the Monocyte/Macrophage THP-1 Cell Line. Int J Mol Sci. 2022;23(7):3607. PubMed
