Description

Technical Parameters

Introduction

peptides

product-1400-1400

Products Description

#### 1. **Discovery and background of Epitalon**

Epitalon (also known as Epithalon or Epithalamin) is a tetrapeptide discovered and synthesized by the team of Russian scientist Professor Vladimir Khavinson in the 1980s. Its amino acid sequence is **Ala-Glu-Asp-Gly** (alanine-glutamic acid-aspartic acid-glycine), which was originally isolated from animal pineal extracts. Studies have shown that Epitalon has the potential to regulate cell aging, activate telomerase activity and extend telomere length, so it is regarded as a potential anti-aging molecule.

#### 2. **Classification and structural characteristics of Epitalon**

Epitalon belongs to the **bioactive short peptide** in the **synthetic peptide** category, and can be further divided into the following categories according to its function and application:

##### **2.1 Classification by function**

- **Anti-aging peptide**: Delaying cell aging by activating telomerase

- **Immunomodulatory peptides**: Regulate the function of the immune system and enhance the body's disease resistance.

- **Antioxidant peptides**: Remove free radicals and reduce oxidative stress damage.

##### **2.2 Classification by source**

- **Natural extracts**: Extracted from the pineal glands of cattle or pigs in the early days, but with low purity and high cost.

- **Chemically synthesized peptides**: Modern production through solid phase peptide synthesis (SPPS) technology, with a purity of more than 99%, is the current mainstream form.

##### **2.3 Physical and chemical properties**

- **Molecular formula and molecular weight**: C₁₆H₂₄N₄O₁₀, molecular weight of about 390.3 Da.

- **Solubility**: Easily soluble in water, saline and weak acid solutions, insoluble in organic solvents (such as ethanol, chloroform).

- **Stability**: Sensitive to high temperature and strong acid/alkali, needs to be stored at -20°C away from light; freeze-dried powder has high stability.

- **Color and morphology**: The pure product is white to off-white crystalline powder, and the solution is colorless and transparent.

#### 3. **Epitalon's core advantages and biological activities**

##### **3.1 Anti-aging and telomere extension**

- **Telomerase activation mechanism**: Epitalon prolongs telomere length and delays cell replication aging (Hayflick limit) by stimulating the expression of telomerase reverse transcriptase (TERT).

- **Animal experimental evidence**: In mouse models, long-term injection of Epitalon can extend lifespan by 25%-30% and reduce age-related pathological changes.

##### **3.2 Antioxidant and DNA protection**

- **Free radical scavenging ability**: Reduce oxidative stress levels by activating superoxide dismutase (SOD) and glutathione peroxidase (GPx).

- **Reducing DNA damage**: Experiments show that Epitalon can reduce UV-induced DNA breaks and protect genome stability.

##### **3.3 Immunomodulation and anti-tumor**

- **Enhancing immune response**: Upregulating IL-2 and interferon-γ (IFN-γ) expression, promoting T cell activity.

- **Inhibiting tumor growth**: In animal models of breast cancer and melanoma, Epitalon can inhibit tumor angiogenesis and induce cancer cell apoptosis.

##### **3.4 Neuroprotective effect**

- **Improving cognitive function**: Experiments on elderly animals have shown that Epitalon can reduce β-amyloid deposition and delay the progression of Alzheimer's disease.

- **Regulating circadian rhythm**: Improving sleep quality by affecting pineal melatonin secretion.

#### 4. **Analysis of the physical and chemical properties of Epitalon**

##### **4.1 Spectral characteristics**

- **Ultraviolet absorption peak**: At 214 nm (peptide bond absorption) and 280 nm (aromatic amino acid absorption, but Epitalon does not contain such amino acids, so the absorption is weak).

- **Mass spectrometry characteristics**: MALDI-TOF mass spectrometry shows that the molecular ion peak [M+H]⁺ is 391.3 m/z, which is consistent with the theoretical molecular weight.

##### **4.2 Thermal stability**

- **Decomposition temperature**: Decomposition begins at about 220°C, and the recommended storage temperature is below 4°C.

- **Influence of freeze-drying process**: The freeze-dried powder can be stably stored for more than 2 years under dry conditions, while the solution form needs to be stored at -20°C and the shelf life does not exceed 6 months.

##### **4.3 Solution behavior**

- **pH dependence**: The solubility is best in the pH range of 5.0-7.4, and strong alkalinity (pH >9) or strong acidity (pH <3) easily leads to peptide chain hydrolysis.

#### 5. **Application fields and usage scenarios**

##### **5.1 Scientific research fields**

- **Aging mechanism research**: used to build telomere extension models and explore aging-related signaling pathways (such as p53/p21 pathways).

- **Drug development**: used as a lead compound to optimize the design of new anti-aging drugs.

##### **5.2 Medical applications**

- **Age-related diseases**: Clinical trials explore its potential in osteoporosis, cardiovascular disease and neurodegenerative diseases.

- **Cancer adjuvant therapy**: combined with chemotherapy to reduce side effects and enhance efficacy.

##### **5.3 Cosmetics industry**

- **Anti-aging skin care products**: added to essences or creams, claiming to delay wrinkle formation by activating skin stem cells.

- **Transdermal absorption technology**: requires nanocarriers (such as liposomes) to improve bioavailability.

#### 6. **Challenges and Controversies**

##### **6.1 Safety Controversy**

- **Unknown Long-term Toxicity**: No acute toxicity was found in animal experiments, but there is a lack of data on long-term use in humans.

- **Ethical Issues**: Excessive extension of lifespan may lead to disputes over the allocation of social resources.

##### **6.2 Technical Bottlenecks**

- **Low Oral Bioavailability**: It needs to be administered by injection or nasal mucosa, which limits its popularity.

- **Significant Individual Differences**: Telomere length and telomerase activity are affected by genetic factors, and the efficacy varies from person to person.

#### 7. **Future Research Directions**

- **Structural Modification**: Develop more stable analogs (such as cyclized versions or D-amino acid substitutions).

- **Targeted Delivery System**: Use exosomes or antibody coupling technology to improve tissue specificity.

- **Multi-omics Research**: Combining epigenomics and metabolomics to reveal its multi-dimensional mechanism of action.

#### 8. **Market Status and Product Forms**

- **Research Reagents**: Sigma-Aldrich and other suppliers provide 1 mg freeze-dried powder at a price of about $200/mg.

- **Clinical Preparations**: Russia and some Eastern European countries have approved it as an anti-aging injection, with a treatment cost of about $3,000/month.

- **Health Products**: Some e-commerce platforms sell it under the name of "telomere activators", but supervision is questionable.

#### Conclusion

As a bridge molecule connecting basic research and clinical transformation, Epitalon's value lies not only in its anti-aging potential, but also in promoting a deeper understanding of telomere biology and cell aging mechanisms. Despite technical and ethical challenges, with the advancement of gene editing and nanotechnology, Epitalon and its derivatives are expected to make the leap from laboratory to pharmacy in the next decade.