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SIGNALLING RESEARCHEPI

Epitalon

A synthetic tetrapeptide (Ala-Glu-Asp-Gly) modeled after epithalamin, a naturally occurring pineal gland peptide studied for telomerase activation, cellular senescence delay, and circadian regulation in longevity research.

Half-Life
Short
Onset
Cumulative
Symbol
EPI
Category
Signalling

⏱ Half-Life

Short duration profile

Epitalon demonstrates a short half-life characteristic in research literature, shaping how observation windows and study timelines are typically structured.

⚡ Onset Characteristics

Cumulative measurable response

Onset is observed as cumulative — a property that influences how researchers structure comparative studies versus other compounds in the signalling research category.

🧠 Key Notes

What makes it distinct

  • 01Mimics the natural pineal peptide epithalamin
  • 02Studied for telomerase upregulation in somatic cells
  • 03Cumulative effects emerge across repeated dosing cycles

🧬 Mechanism of Action

How it works

Epitalon (Ala-Glu-Asp-Gly) is a synthetic analog of epithalamin, a peptide secreted by the pineal gland. Its primary mechanism involves activation of the telomerase enzyme via regulation of the human telomerase reverse transcriptase (hTERT) gene, effectively extending cellular replicative lifespan. It also modulates melatonin synthesis and circadian gene expression (notably via CLOCK/BMAL1 pathways), supporting sleep-wake cycle regulation. Additionally, Epitalon interacts with DNA regulatory regions in a manner similar to transcription factors, influencing gene expression profiles associated with youth and cellular repair.

✨ Documented Benefits

What the research shows it supports

B01Activates telomerase and extends telomere length in human somatic cell research models.
B02Normalizes melatonin production and circadian rhythm markers in ageing research populations.
B03Extends cellular replicative lifespan beyond the Hayflick limit in vitro.
B04Supports immune function restoration in age-related immunosenescence models.
B05Demonstrates antioxidant and anti-inflammatory effects in cellular stress research.
B06Appears to regulate gene expression by binding DNA regulatory sequences similarly to transcription factors.

🔍 Research Insights

What the literature shows

INSIGHT 01

Activates telomerase via hTERT gene regulation — a direct mechanistic link to cellular longevity research.

INSIGHT 02

Normalizes melatonin rhythms in ageing research subjects, linking pineal function to sleep and repair cycles.

INSIGHT 03

Reported to extend the replicative lifespan of human somatic cells beyond established division limits.

🧪 Typical Research Use Cases

Where it appears in study design

USE CASE 01

Telomerase activation and cellular senescence research.

USE CASE 02

Circadian rhythm and melatonin regulation studies.

USE CASE 03

Comparative longevity research vs NAD+ and mitochondrial peptides.

📚 References

Peer-reviewed literature

Primary research sources cited on this profile. All links resolve to PubMed or the publishing journal.

  1. [01]

    Al-Dulaimi, S. et al. (2025). Epitalon increases telomere length in human cell lines through telomerase upregulation or ALT activity. Biogerontology, 26(5), 178.

    Biogerontology ↗
  2. [02]

    Araj, S. K. et al. (2025). Overview of Epitalon-Highly Bioactive Pineal Tetrapeptide with Promising Properties. International Journal of Molecular Sciences, 26(6).

    International Journal of Molecular Sciences ↗
  3. [03]

    Khavinson, V. Kh. et al. (2004). Peptide promotes overcoming of the division limit in human somatic cell. Bulletin of Experimental Biology and Medicine, 137(5), 503–506.

    Bulletin of Experimental Biology and Medicine ↗
  4. [04]

    Khavinson, V. et al. (2005). DNA double-helix binds regulatory peptides similarly to transcription factors. Neuro Endocrinology Letters, 26(3), 237–241.

    Neuro Endocrinology Letters ↗

Continue Exploring

Also explore: DSIP, Semax, NAD+

DSIP →Semax →NAD+ →Half-Life Guide →Signalling Research →