Epitalon: Telomere and Cellular Senescence Research

Epithalon, also called Epitalon, is the tetrapeptide Ala-Glu-Asp-Gly investigated in human fetal-fibroblast culture studies of telomerase and proliferative capacity. Study record

A 2003 study reported that adding Epithalon to telomerase-negative human fetal fibroblast cultures induced telomerase catalytic-subunit expression, enzymatic activity, and telomere elongation. Study record

A 2004 follow-up examined primary pulmonary fibroblasts derived from a 24-week fetus, with untreated cells losing proliferative potential at passage 34. Study record

The investigators reported telomere elongation toward early-passage lengths and ten additional divisions in peptide-treated cultures, reaching passage 44 and continuing to divide. Study record

The 2003 authors proposed telomerase-gene reactivation as an explanation, but the abstract does not establish a direct molecular binding target for the peptide. Study record

Although these experiments used human-derived cells, their measured outcomes were cellular telomerase activity, telomere length, and replicative behavior, not longer human lifespan or improved clinical health. Study record Study record

Because both reports concern fetal-fibroblast cultures and share investigators, they should not be presented as independent validation across aged adult tissues or as evidence of long-term safety in people. Study record Study record

For analytical and published-literature context, see the Reference Library.

All materials described are for in-vitro laboratory research only and are not for human or veterinary use.