Epitalon — tetrapeptide identity and cell-research guide

Epitalon is a defined synthetic four-residue peptide with the sequence alanine–glutamic acid–aspartic acid–glycine. Epithalon is an alternative spelling used in the cited publications.

Epithalamin is a pineal peptide preparation, not the same defined molecule. The 2004 paper distinguishes that preparation from the synthetic tetrapeptide. Results attributed to an extract should not be reassigned to Epitalon simply because the names are similar.

Khavinson and colleagues studied a telomerase-negative human fetal fibroblast culture. They reported expression of the telomerase catalytic subunit, telomerase activity and telomere elongation following addition of Epithalon.

These are observations in the stated cultured-cell model. A possible explanation involving telomerase-gene reactivation is discussed by the authors; the report does not establish a direct peptide-binding target or a general effect across all cell types.

A follow-up from the same research group examined primary pulmonary fibroblasts derived from fetal tissue. The authors reported telomere elongation and continued proliferation through later passages than the control cultures.

This is a same-group follow-up, not independent replication. Passage counts are not automatically interchangeable with measured population doublings, and continued proliferation over a finite experiment is not evidence of indefinite proliferation.

The cited studies examine related but distinct observations: telomerase expression or enzymatic activity, telomere length, and the ability of cultures to continue proliferating. A change in one endpoint should not be treated as a measurement of all three.

Comparisons require attention to cell origin, passage history, controls and the methods used to measure each endpoint. The linked abstracts do not by themselves support assumptions about every experimental detail. These cell-model findings establish neither human benefit nor product suitability.

The references describe research materials used in those publications, not the identity, purity or biological activity of a vial listed here. Lot-specific analytical claims require the actual published report for that lot; no report should be inferred from the literature.

Aussie Peptides does not publish product- or lot-specific preparation, storage or stability data. Base preparation, storage and disposal on the supplier safety data sheet (SDS) and your institution's standard operating procedures.

Where a vial label shows a lot number and a batch report has been published for that lot, it can be looked up on the verify page and recorded alongside your experimental data.

Materials on this site are supplied strictly for in-vitro laboratory research. They are not offered for human or veterinary use. A research-use label does not by itself determine regulatory status; see the compliance page for official TGA guidance.

Purchasers must be 18 or over and are responsible for handling, storing and disposing of research materials in line with their institution's requirements and applicable Australian law.

Nothing on this page is medical advice, a dosing protocol, or a claim of therapeutic benefit. It summarises what the published research literature investigates.