Epithalon: A Laboratory Research Reference

Epithalon (also written epitalon) is a synthetic tetrapeptide based on the amino acid composition of the pineal peptide complex epithalamin. It is studied in laboratory research for its reported interactions with DNA and epigenetic regulation in experimental models.

This page is a non-promotional scientific reference for researchers. It summarises the chemical identity, molecular characteristics, mechanism as described in the literature, research areas, and analytical testing of epithalon. It does not provide dosing, therapeutic, or human-use guidance of any kind. Epithalon supplied by Bulk Aussie Peptides is for laboratory research purposes only.

What Is Epithalon?

Epithalon is a synthetic tetrapeptide designed as a simplified analogue of epithalamin, a peptide extract prepared from the pineal gland. Epithalon is conventionally written Ala-Glu-Asp-Gly (AEDG). It was developed as a defined-sequence reference peptide to study the biological activity reported for the pineal peptide complex.

For background on how synthetic research peptides are produced and verified, see the synthetic peptides research guide.

Molecular Characteristics

Several molecular properties are used to identify epithalon in analytical documentation:

• Classification: a synthetic tetrapeptide of the pineal-peptide family.
• Sequence: Ala-Glu-Asp-Gly (AEDG) in conventional single-letter notation.
• Molecular weight: reported in Daltons (Da) on product documentation; the measured value on a Certificate of Analysis should be compared against the theoretical mass derived from the sequence.
• Physical form: supplied as a lyophilised (freeze-dried) powder, the standard presentation for research peptides.

How Epithalon Works

Epithalon is studied for its reported interaction with chromatin and DNA. Research describes the peptide associating with methylated DNA and with linker histone H1, which has been proposed to underlie effects on gene expression and, in some models, telomerase activity and telomere length. The interpretation of these observations varies across the literature, and recent reviews note that direct quantitative demonstration of telomere effects across dose ranges remains limited.

These observations are preclinical and describe peptide–chromatin interactions in model systems; they do not constitute a therapeutic use.

Areas of Scientific Research

The research literature describes several lines of investigation involving epithalon:

• Chromatin interaction: studies of peptide binding to DNA and histones.
• Telomerase and telomere biology: investigation of reported effects on telomerase activity and telomere length in cell models.
• Aging and longevity models: work in cell lines and animal models examining lifespan-related endpoints.

These investigations are conducted in vitro or in approved animal research models under institutional oversight. They do not translate to approved human use.

Analytical Testing

As with other research peptides, epithalon is characterised using:

• HPLC for purity assessment, reported as a percentage of total peak area.
• Mass spectrometry for identity confirmation, by comparing measured molecular mass to the theoretical value.

Guidance on interpreting the resulting documents is available in the article on how to read a peptide Certificate of Analysis.

Storage and Handling

In a laboratory context, lyophilised epithalon is typically stored in a freezer, protected from light and moisture, and handled according to the product-specific documentation. Once reconstituted, the resulting solution is refrigerated and used within the timeframe stated in the documentation. General guidance is covered in the peptide storage and stability reference.

Frequently Asked Questions

• What is epithalon? Epithalon is a synthetic tetrapeptide (Ala-Glu-Asp-Gly) based on the pineal peptide complex epithalamin.
• What is the epithalon sequence? It is conventionally written Ala-Glu-Asp-Gly, or AEDG.
• What is epithalon studied for? It is investigated in laboratory models for interactions with chromatin and reported telomerase-related effects.
• Is epithalon the same as epithalamin? No — epithalamin is a pineal peptide extract, while epithalon is a defined synthetic tetrapeptide designed as its simplified analogue.
• How is epithalon purity tested? Purity is commonly estimated by HPLC, while identity is confirmed by mass spectrometry.

References

• Khavinson, V. K., Bondarev, I. E., & Butyugov, A. A. (2003). Epithalon peptide induces telomerase activity and telomere elongation in human somatic cells. Bulletin of Experimental Biology and Medicine, 135(6), 590–592. PubMed 12937682
• Khavinson, V. K., Izmaylov, D. M., Obukhova, L. K., & Malinin, V. V. (2000). Effect of epitalon on the lifespan increase in Drosophila melanogaster. Mechanisms of Ageing and Development, 120(1–3), 141–149.

Related Research Resources

• Thymalin: A Laboratory Research Reference — a related bioregulator peptide.
• Synthetic Peptides: Research Guide — how research peptides are produced and verified.
• SS-31: A Laboratory Research Reference — a peptide studied in a distinct longevity-related context.