Epithalon: Telomerase-Activating Tetrapeptide
A four-amino-acid peptide (AEDG) that activates telomerase, the enzyme responsible for maintaining telomere length.
Quick Reference
| Research Dosage | 5-10mg per day |
|---|---|
| Frequency | Once daily |
| Administration | Subcutaneous injection |
| Cycle Length | 10-20 days, repeated 2-3 times yearly |
| Reconstitution | 2mL bacteriostatic water per 10mg vial |
| Storage | Refrigerate after reconstitution, use within 4-6 weeks |
Epithalon represents one of the most intriguing approaches to aging research – a simple four-amino-acid peptide that activates telomerase, the enzyme responsible for maintaining telomere length. Telomeres are the protective caps on chromosome ends that shorten with each cell division, and their length is considered a fundamental marker of biological aging.
Developed by Professor Vladimir Khavinson at the St. Petersburg Institute of Bioregulation and Gerontology – one of the world's leading aging research centers – Epithalon is based on Epithalamin, a peptide extract from the pineal gland. Khavinson's work spans over 40 years and includes hundreds of published studies on peptide bioregulators.
What makes Epithalon remarkable is its documented ability to increase telomerase activity and promote telomere elongation in human cells. The discovery that a simple tetrapeptide could affect such a fundamental aging mechanism opened new avenues in longevity research.
Research Applications
Epithalon is primarily studied for its effects on telomerase activation and longevity pathways. Published research has examined its effects across multiple areas:
Telomerase and Telomere Research
Telomerase Activation
Epithalon's primary documented effect is telomerase activation:
- Research demonstrates increased telomerase activity in human cells exposed to Epithalon
- Studies show activation of hTERT (human telomerase reverse transcriptase) gene expression
- hTERT is the catalytic subunit of telomerase – the active enzyme component
- Effects documented in multiple cell types including fibroblasts
- Dose-dependent activation observed in cell culture studies
Telomere Elongation
By activating telomerase, Epithalon enables telomere maintenance:
- Cell culture studies demonstrate actual telomere elongation
- Prevention of critical telomere shortening that triggers cellular senescence
- Extended replicative capacity in treated cells
- Cells can undergo more divisions before reaching the Hayflick limit
- Potential delay of replicative senescence
Why Telomeres Matter
Telomere shortening is associated with:
- Cellular aging and entry into senescence
- Reduced tissue regenerative capacity
- Age-related diseases across multiple organ systems
- Increased mortality risk in epidemiological studies
- Shortened telomeres predict biological versus chronological age
Longevity and Lifespan Research
Animal Lifespan Studies
Professor Khavinson's research documented lifespan effects:
- Extended lifespan in rodent studies
- Effects on both average and maximum lifespan
- Long-term administration studies spanning years
- Multiple species tested with consistent findings
- 15+ years of follow-up data in some human observational studies
Biomarkers of Aging
Research has examined Epithalon's effects on various aging biomarkers:
- Cellular senescence markers (p16, p21, beta-galactosidase)
- Oxidative stress parameters
- Immune function (immunosenescence markers)
- Hormonal changes associated with aging
- Inflammatory markers (inflammaging)
Pineal Gland and Melatonin Research
Pineal Origin
Epithalon is based on peptides naturally found in the pineal gland:
- Pineal gland regulates circadian rhythms
- Produces melatonin, the master circadian hormone
- Pineal function declines significantly with age
- Epithalamin was the natural extract; Epithalon is the synthetic tetrapeptide
Melatonin Synthesis Effects
Studies suggest Epithalon may:
- Increase melatonin production
- Restore age-related melatonin decline
- Normalise circadian rhythm function
- Affect pineal gene expression
- Improve sleep quality through melatonin effects
Why Melatonin Matters for Aging
Melatonin decline is a hallmark of aging affecting:
- Sleep quality and architecture
- Antioxidant defense (melatonin is a potent antioxidant)
- Immune function
- Various age-related processes
Antioxidant and Protective Research
- Enhanced antioxidant enzyme expression
- Reduced oxidative damage markers
- Protection from reactive oxygen species
- May contribute to cellular protection mechanisms
Dosage Information
Standard Research Dosages
Dosages commonly referenced in literature range from 5-10mg daily for 10-20 days. This represents the standard protocol established in Professor Khavinson's original research.
Cycling Approach
Unlike many peptides that are used continuously, Epithalon research typically employs a cyclic administration pattern:
- Active period: 10-20 days of daily administration
- Break period: Several months between cycles
- Frequency: 2-3 cycles per year
- Rationale: Periodic "boosting" of telomerase activity
This cycling approach is based on the concept that intermittent telomerase activation may be sufficient for maintaining telomere length without requiring continuous administration.
Administration
Epithalon is typically administered via subcutaneous injection. The peptide's small size and water solubility allow for easy reconstitution and injection.
Reconstitution Guide
Required Materials
- Epithalon lyophilised powder (10mg or 50mg vial)
- Bacteriostatic water (water containing 0.9% benzyl alcohol)
- Sterile insulin syringe for reconstitution
- Alcohol swabs for sterile technique
Reconstitution Steps
- Allow the Epithalon vial to reach room temperature before reconstitution
- Draw the appropriate volume of bacteriostatic water into the syringe:
- For 10mg vial: 2mL bacteriostatic water
- For 50mg vial: 5mL bacteriostatic water
- Insert the needle into the Epithalon vial and direct the stream of water down the inside wall of the vial – do not spray directly onto the powder
- Allow the powder to dissolve naturally without shaking. Gentle swirling is acceptable if needed. Complete dissolution typically occurs within a few minutes. The solution should be clear with no visible particles.
- Store reconstituted solution refrigerated at 2-8°C immediately after reconstitution
Concentration Reference Table
| Vial Size | Water Added | Concentration | 5mg Dose | 10mg Dose |
|---|---|---|---|---|
| 10mg | 2mL | 5mg/mL | 100 units (1mL) | 200 units (2mL) |
| 50mg | 5mL | 10mg/mL | 50 units (0.5mL) | 100 units (1mL) |
Storage Guidelines
Lyophilised (Powder) Form
- Stable at room temperature for several weeks without significant degradation
- Refrigeration (2-8°C) extends stability to 12+ months
- Freezing (-20°C) extends stability to 24+ months
- Protect from light and moisture
- Keep vial sealed until ready for reconstitution
Reconstituted Solution
- Must be refrigerated at 2-8°C
- Stable for 4-6 weeks when stored correctly
- Do not freeze after reconstitution – freezing can damage the peptide structure
- Avoid repeated temperature fluctuations
- Use sterile technique when drawing doses to prevent contamination
- If solution becomes cloudy or contains particles, discard and reconstitute a fresh vial
Frequently Asked Questions
Common questions about Epithalon research
What is the difference between Epithalon and Epithalamin?
Epithalamin is a natural peptide extract from bovine pineal glands used in early research by Professor Khavinson. Epithalon (AEDG) is the specific synthetic tetrapeptide identified as the active component. Epithalon provides consistent, pure, defined composition for research applications.
Does Epithalon really activate telomerase?
Published cell culture studies demonstrate that Epithalon increases telomerase activity and can elongate telomeres in human cells. This has been documented in peer-reviewed research using multiple cell types including fibroblasts, with dose-dependent activation observed.
Is telomerase activation safe?
This is a complex question that remains an active research area. While cancer cells often have high telomerase activity, normal cells with maintained telomeres may actually resist transformation. Research suggests Epithalon may have different effects on normal versus cancer cells, but this requires further investigation.
How does Epithalon affect melatonin?
Research suggests Epithalon can increase melatonin production and help restore age-related melatonin decline. This relates to its pineal gland origin – the synthetic peptide is based on compounds naturally found in the pineal gland, which is the master regulator of circadian rhythms and melatonin production.
Why is Epithalon administered in cycles?
The typical research protocol of 10-20 days repeated 2-3 times yearly is based on the concept of periodic "boosting" of telomerase activity. This cycling approach was established in Professor Khavinson's original research protocols and reflects the idea that intermittent activation may be sufficient for telomere maintenance.
What is the molecular weight of Epithalon?
Epithalon has a molecular weight of 390.35 g/mol (Daltons). As a tetrapeptide consisting of only four amino acids (Ala-Glu-Asp-Gly), it is one of the smallest bioactive peptides used in research.
How should Epithalon be stored?
Lyophilised (powder) form is stable at room temperature short-term, but refrigeration (2-8°C) or freezing (-20°C) is recommended for long-term storage. Reconstituted solution must be refrigerated and is stable for 4-6 weeks. Do not freeze reconstituted solution.
What makes Epithalon unique among peptides?
Epithalon is remarkable for its simplicity – just four amino acids – yet demonstrates significant effects on telomerase activation. This simplicity aids manufacturing and quality control, ensures excellent stability, and allows easy cellular uptake. Few peptides this small show such pronounced biological effects.
The Science: How Epithalon Works
The Telomere-Telomerase Connection
What Are Telomeres?
- Repetitive DNA sequences (TTAGGG in humans) at chromosome ends
- Protect coding DNA from degradation during replication
- Shorten by 50-200 base pairs with each cell division
- When critically short, cells enter senescence or undergo apoptosis
What Is Telomerase?
- Enzyme that adds telomeric repeats to chromosome ends
- Consists of TERT (protein catalytic component) and TERC (RNA template)
- Active in stem cells and germ cells
- Mostly inactive in adult somatic cells
- Reactivation can extend cellular lifespan
Epithalon's Mechanism of Action
Epithalon exerts its effects through a cascade of molecular events:
- TERT Gene Activation: Upregulates hTERT gene expression in target cells
- Telomerase Activity Increase: More enzyme production leads to enhanced telomere maintenance capacity
- Telomere Elongation: Enables cells to maintain or extend their telomeres
- Delayed Senescence: Cells can continue dividing beyond their normal replicative limit
The Simplicity Paradox
Epithalon is just 4 amino acids (Ala-Glu-Asp-Gly) – remarkably simple for such significant biological effects. This simplicity:
- Aids manufacturing and quality control
- Ensures excellent stability
- Allows easy cellular uptake
- Raises intriguing questions about mechanism that continue to drive research
Amino Acid Sequence and Structure
Full Sequence (Three-Letter Code): Ala-Glu-Asp-Gly
Single-Letter Code: AEDG
The sequence represents one of the smallest bioactive peptides known, yet demonstrates profound effects on telomerase activation. Each amino acid contributes to the peptide's overall charge and structure, with the two acidic residues (Glu and Asp) giving the peptide a net negative charge of -2 at physiological pH.
Technical Specifications
| Systematic Name | Ala-Glu-Asp-Gly |
|---|---|
| Other Names | Epitalon, Epithalone, Epithalamin (natural extract), AEDG, Pineal Peptide, Telomerase Activator Peptide |
| Amino Acid Count | 4 |
| Sequence | AEDG |
| Molecular Formula | C14H22N4O9 |
| Molecular Weight | 390.35 g/mol |
| CAS Number | 307297-39-8 |
| Isoelectric Point | ~3.2 |
| Net Charge (pH 7) | -2 |
| Appearance | White to off-white lyophilised powder |
| Solubility | Freely soluble in water and aqueous buffers |
| Purity (PurposeLabs) | ≥99% (HPLC verified) |
| Storage (Lyophilised) | -20°C long-term, 2-8°C short-term |
| Storage (Reconstituted) | 2-8°C, use within 4-6 weeks |
Quality: Australian University Testing
Why Peptide Quality Matters
The research peptide market contains products of highly variable quality. Independent testing of products from various suppliers has revealed significant issues:
- Purity levels as low as 50% in products claiming "99% purity"
- Incorrect amino acid sequences (entirely wrong peptides)
- Truncated sequences (missing amino acids)
- Bacterial endotoxin contamination
- Oxidised or degraded peptides with reduced activity
Our Testing Protocol
Every batch of Epithalon from PurposeLabs undergoes comprehensive testing at a leading proteomics laboratory based at an Australian university in Sydney – one of Australia's premier analytical facilities.
Confirms purity levels of ≥99%, identifies any impurities or degradation products.
Verifies exact molecular weight, confirms correct amino acid sequence.
Determines actual peptide content versus salt, moisture, and counter-ions.
Why Australian University Testing?
Our testing partner is an established, verifiable proteomics facility at a major Australian university, with published research credentials, transparent methodology, and no commercial conflict of interest. This contrasts with overseas "certificates of analysis" from unknown or unverifiable laboratories.
Shop Epithalon
Australian university tested. 99%+ purity verified by HPLC and mass spectrometry. Fast shipping from Sydney.
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References
Key studies for researchers seeking primary literature:
- Khavinson VK, et al. "Peptide promotes overcoming of the limit of fibroblast division." Bulletin of Experimental Biology and Medicine, 2003.
- 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.
- Khavinson VK, et al. "Epithalon peptide induces telomerase activity and telomere elongation in human somatic cells." Bulletin of Experimental Biology and Medicine, 2003.
- Khavinson VK, Morozov VG. "Peptides of pineal gland and thymus prolong human life." Neuroendocrinology Letters, 2003.
- Anisimov VN, Khavinson VK. "Peptide bioregulation of aging: results and prospects." Biogerontology, 2010.
- Khavinson V, et al. "AEDG peptide (Epitalon) stimulates gene expression and protein synthesis during neurogenesis." Molecules, 2020.
- Korkushko OV, et al. "Peptide geroprotector from the pituitary gland inhibits rapid aging in elderly people." Bulletin of Experimental Biology and Medicine, 2006.
- Khavinson VK. "Peptides and Ageing." Neuroendocrinology Letters, 2002.
Disclaimer
All products sold by PurposeLabs are intended for laboratory and research use only. They are not intended for human or animal consumption. The information provided is for educational purposes only and should not be construed as medical advice. Consult with qualified healthcare professionals for any health-related decisions.
Epithalon is not approved by the TGA for therapeutic use in Australia. Products are sold strictly for research purposes in accordance with Australian regulations.