Research Overview Epithalon (Ala-Glu-Asp-Gly) is a synthetic tetrapeptide geroprotector developed by Prof. Vladimir Khavinson at the St. Petersburg Institute of Bioregulation and Gerontology as the active component of Epithalamin (bovine pineal gland extract). Its discovery originated from 1970s Soviet military research to protect soldiers from radiation and accelerated aging.[4] Epithalon's mechanism is fundamentally different from classical receptor-ligand pharmacology. Rather than binding a c

How does Epithalon work? What is its mechanism of action?

Mechanism of Action Epithalon operates via a receptor-independent, epigenetic mechanism — bypassing cell surface receptors to directly interact with the genome. It penetrates the cell nucleus and binds to DNA and histone proteins, functioning as a master gene regulator.[3][1] Primary Epigenetic Targets TargetMechanismDownstream Effect DNA — CAG repeats & ATTTC sequencesBinds major groove of DNA double helixLowers chromatin melting temperature → prevents genomic "hardening" with age Histone H1.3

What are the research applications of Epithalon?

Research Applications Epithalon research spans 10+ indication categories with over 50 years of investigation (1970s–2025): Telomere Extension & Cellular Senescence — Cells surpass Hayflick limit; telomere elongation confirmed in subjects aged 60–80 (9.61→10.72 kb and 7.51→8.91 kb, p<0.05).[5] Cancer Prevention Paradox — Inhibits spontaneous tumors in HER-2/neu mice; reduces oncogene expression 3.7-fold; anti-metastatic — despite telomerase activation.[7][14] Retinal Degeneration / Retinitis P

What does the research summary say about Epithalon?

Preclinical Research Summary Key Preclinical Studies StudyModelKey FindingsRef Anisimov/Popovich et al. (2003)SHR mice — 1 µg/mouse SC × 5d/month from 3 moLast 10% lifespan increased 13.3%; chromosomal aberrations ↓17.1%; leukemia inhibited 6-fold[7] Anisimov et al. (2002)HER-2/neu transgenic mice — 1 µg/mouse SC monthlyHER-2/neu mRNA reduced 3.7-fold; breast adenocarcinoma incidence significantly reduced[14] Kossoy et al. (2006)C3H/He mice — 0.1 µg/mouse SC × 5x/wk × 6.5 moReduced tumor metasta

How should Epithalon be stored?

Store lyophilized at -20°C (years-stable). Protect from moisture and light. Reconstituted: 4°C up to 20 days; avoid freeze-thaw cycles.

Epithalon Research Applications — Scientific Studies & Evidence

Q: What does the research summary say about Epithalon?

Preclinical Research Summary Key Preclinical Studies StudyModelKey FindingsRef Anisimov/Popovich et al. (2003)SHR mice — 1 µg/mouse SC × 5d/month from 3 moLast 10% lifespan increased 13.3%; chromosomal aberrations ↓17.1%; leukemia inhibited 6-fold[7] Anisimov et al. (2002)HER-2/neu transgenic mice — 1 µg/mouse SC monthlyHER-2/neu mRNA reduced 3.7-fold; breast adenocarcinoma incidence significantly reduced[14] Kossoy et al. (2006)C3H/He mice — 0.1 µg/mouse SC × 5x/wk × 6.5 moReduced tumor metasta

Q: How should Epithalon be stored?

Store lyophilized at -20°C (years-stable). Protect from moisture and light. Reconstituted: 4°C up to 20 days; avoid freeze-thaw cycles.

Research Applications

Epithalon research spans 10+ indication categories with over 50 years of investigation (1970s–2025):

Telomere Extension & Cellular Senescence — Cells surpass Hayflick limit; telomere elongation confirmed in subjects aged 60–80 (9.61→10.72 kb and 7.51→8.91 kb, p<0.05).[5]
Cancer Prevention Paradox — Inhibits spontaneous tumors in HER-2/neu mice; reduces oncogene expression 3.7-fold; anti-metastatic — despite telomerase activation.[7][14]
Retinal Degeneration / Retinitis Pigmentosa — reported observations in 162 research subjects; visual field expanded 90–120°.[9]
Circadian Rhythm & Sleep Regulation — Restores youthful melatonin secretion; normalizes cortisol rhythms in aged monkeys and humans.[11][15]
Neuroprotection & Neurogenesis — Upregulates Nestin, GAP43, Beta-Tubulin III in stem cells; promotes neuronal differentiation.[3]
Immune System Rejuvenation — ↑ IL-2, T-cell proliferation; corrects age-related CD4+/CD8+ ratios.[4]
Antioxidant Defense — ↑ SOD (+41%), catalase (+20%), glutathione peroxidase; ↓ lipid peroxidation and ROS.[6]
Diabetic Retinopathy / Wound Healing — Inhibits EMT and fibrosis in high-glucose RPE cells.[12]
Reproductive Health — Restores estrous cycles in aged rats; improves oocyte quality and blastocyst hatching.[10]
Geroprotection / Anti-Aging — Maximum lifespan increased 12–13% in mice; up to 24% in CBA model; reduced chromosomal aberrations.[7][8]
Nephroprotection — Zamorskii 2014-19 acute-kidney-failure rat models: increased diuresis, decreased proteinuria, raised renal catalase and glutathione peroxidase activity at 7 µg/kg IM/IP × 7-10 days.[13]
Oocyte Quality & Reproductive Aging — Yue 2022 demonstrated post-ovulatory aging protection in mouse oocytes; Ullah 2025 showed activated telomerase, improved blastocyst hatching, and reduced ROS in bovine oocytes — implicating Epithalon as a tool peptide for studying telomere-mediated reproductive senescence.[10][20]

Comparative Research Context

Epithalon sits at the intersection of three adjacent peptide-pharmacology research programs: the Khavinson "peptide bioregulator" family (vilon, livagen, pinealon — short peptides with epigenetic activity), the geroprotector / circadian-modulator class (DSIP, melatonin), and the modern telomere-biology field (TA-65, GRN163L). Its receptor-independent direct DNA/histone binding mechanism distinguishes it from receptor-targeted geroprotector candidates and supports its use as a research tool for studying chromatin-state pharmacology. Researchers comparing Epithalon with related bioregulator and geroprotector peptides commonly cross-reference our DSIP, Selank, and Thymosin Alpha-1 pages for parallel pineal-axis, immune-rejuvenation, and stress-resilience pharmacology in matched aging models. The Khavinson 2003 telomerase upregulation, Anisimov 2003 lifespan-extension, and Al-dulaimi 2025 dual-mechanism studies together establish Epithalon as the canonical research peptide for investigating the telomere-aging axis in cell and rodent systems.

Research Applications

Epithalon research spans 10+ indication categories with over 50 years of investigation (1970s–2025):

Telomere Extension & Cellular Senescence — Cells surpass Hayflick limit; telomere elongation confirmed in subjects aged 60–80 (9.61→10.72 kb and 7.51→8.91 kb, p<0.05).[5]
Cancer Prevention Paradox — Inhibits spontaneous tumors in HER-2/neu mice; reduces oncogene expression 3.7-fold; anti-metastatic — despite telomerase activation.[7][14]
Retinal Degeneration / Retinitis Pigmentosa — reported observations in 162 research subjects; visual field expanded 90–120°.[9]
Circadian Rhythm & Sleep Regulation — Restores youthful melatonin secretion; normalizes cortisol rhythms in aged monkeys and humans.[11][15]
Neuroprotection & Neurogenesis — Upregulates Nestin, GAP43, Beta-Tubulin III in stem cells; promotes neuronal differentiation.[3]
Immune System Rejuvenation — ↑ IL-2, T-cell proliferation; corrects age-related CD4+/CD8+ ratios.[4]
Antioxidant Defense — ↑ SOD (+41%), catalase (+20%), glutathione peroxidase; ↓ lipid peroxidation and ROS.[6]
Diabetic Retinopathy / Wound Healing — Inhibits EMT and fibrosis in high-glucose RPE cells.[12]
Reproductive Health — Restores estrous cycles in aged rats; improves oocyte quality and blastocyst hatching.[10]
Geroprotection / Anti-Aging — Maximum lifespan increased 12–13% in mice; up to 24% in CBA model; reduced chromosomal aberrations.[7][8]
Nephroprotection — Zamorskii 2014-19 acute-kidney-failure rat models: increased diuresis, decreased proteinuria, raised renal catalase and glutathione peroxidase activity at 7 µg/kg IM/IP × 7-10 days.[13]
Oocyte Quality & Reproductive Aging — Yue 2022 demonstrated post-ovulatory aging protection in mouse oocytes; Ullah 2025 showed activated telomerase, improved blastocyst hatching, and reduced ROS in bovine oocytes — implicating Epithalon as a tool peptide for studying telomere-mediated reproductive senescence.[10][20]

Epithalon: Research Applications

Research Applications

Comparative Research Context

Related Research Questions

Epithalon: Research Applications

Research Applications

Comparative Research Context

Related Research Questions