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Synthetic Peptides

Epitalon

Epithalon / AEDG tetrapeptide

Epitalon is a synthetic (Ala-Glu-Asp-Gly) studied in cellular ageing, gene-expression, and telomere-biology models. Most primary literature originates from a small number of research groups; controlled human clinical trials are absent from PubMed-indexed peer-reviewed sources.

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Synthetic Peptides
Classification
Synthetic pineal tetrapeptide
Research stage
In vitro, animal, and limited human cell-line literature
Sequence
Ala-Glu-Asp-Gly
Molecular weight
390.35 Da

Snapshot

Key takeaways

A three-bullet snapshot before reading the full dossier.

  1. 01

    Synthetic AEDG with low (390 Da).

  2. 02

    Primary peer-reviewed data are from and rodent studies, plus recent human cell-line work.

  3. 03

    No PubMed-indexed controlled clinical trials in humans were identified at time of writing.

Dossier overview

3

research areas

3

references

3

handling notes

01

Mechanism of action

Research literature associates Epitalon with hTERT () upregulation in some normal cell lines, ALT-pathway activation in cancer cell lines, and modulation of neurogenic gene-expression markers (Nestin, GAP43, β-Tubulin III) in stem-cell models.

02

Research applications

  • Telomere biology and cellular ageing research
  • Gene regulation and neurogenic differentiation studies
  • Short peptide comparison studies

03

Study references

Each profile cites a minimum of two peer-reviewed sources, with model type and reported sample size where the source provides it. Findings are model-specific and must not be extrapolated to therapeutic use.

AEDG Peptide (Epitalon) Stimulates Gene Expression and Protein Synthesis during Neurogenesis: Possible Epigenetic Mechanism

2020

Khavinson V et al. · Molecules

Model
In vitro — human gingival mesenchymal stem cells
Sample
Not reported in abstract

AEDG peptide was associated with increased expression of neurogenic differentiation markers (Nestin, GAP43, β-Tubulin III, Doublecortin) through proposed histone-interaction mechanisms.

PMID 32019204 DOI 10.3390/molecules25030609

Epitalon increases telomere length in human cell lines through telomerase upregulation or ALT activity

2025

Al-Dulaimi S et al. · Biogerontology

Model
In vitro — human breast-cancer cell lines (21NT, BT474), normal epithelial and fibroblast cell lines
Sample
Not reported in abstract

Reported concentration-dependent telomere lengthening via hTERT upregulation in normal cells and ALT pathway activation in cancer cell lines.

PMID 40908429 DOI 10.1007/s10522-025-10239-6

Overview of Epitalon — Highly Bioactive Pineal Tetrapeptide with Promising Properties

2025

Araj SK et al. · International Journal of Molecular Sciences

Model
Narrative review
Sample
N/A (review)

Reviewed 25 years of Epitalon research describing proposed antioxidant, neuroprotective, and antimutagenic activities across model systems.

PMID 40141333 DOI 10.3390/ijms26052691

Evidence caveats

  • Much of the foundational rodent and human-observation literature comes from a single research group (Khavinson et al.); independent replication is limited.
  • Anti-ageing and lifespan claims circulating outside the peer-reviewed literature are not supported by PubMed-indexed controlled human trials.

04

Storage and handling

Store under controlled laboratory conditions with batch and preparation details recorded.

  • Record preparation conditions for short peptide comparison work.
  • Protect material from contamination during handling.
  • Use protocol-specific storage documentation.

05

Related reading

education

Operational

Handling

Storage, Stability, and Research Inventory Controls

A practical overview of the storage and documentation variables commonly considered in peptide research inventories.

6 min

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research

Research summary

SignallingMethodology

Short Peptides and Cellular Marker Models

A formal summary of how short peptides are discussed in cellular marker and regulatory signalling research.

8 min

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