Pinealon complete guide

Pinealon — the synthetic short peptide with the sequence Glu-Asp-Arg (EDR) — is one of several short-peptide bioregulators developed at the St. Petersburg Institute of Bioregulation and Gerontology under the long-running research programme led by Vladimir Khavinson. It belongs to the same family as Epithalon (AEDG), Vilon (Lys-Glu), Cortagen (Ala-Glu-Asp-Pro) and Thymalin-derived sequences: defined-sequence chemical syntheses of short peptides identified by fractionating peptide-complex extracts from specific organ tissues. Pinealon was characterized in published Khavinson-laboratory research as a tripeptide derived from work on pineal-tissue peptide extracts, but its published research line in cell-culture and research-animal models has converged on a CNS-research focus distinct from Epithalon’s telomerase-research focus.

This guide is a mechanism-focused deep-dive: what EDR is structurally, the proposed mechanism of action through antioxidant-pathway up-regulation, anti-apoptotic gene-expression modulation and the broader Khavinson site-specific peptide-DNA interaction framework, the published neuroprotection and cognitive-aging research lines, how Pinealon sits relative to its sister peptide Epithalon, and how it fits into the wider Russian gerontology research corpus. Everything is research-frame language. No protocol guidance. No clinical recommendations.

Quick reference — Pinealon identifiers

Property	Pinealon
Class	Synthetic tripeptide, Khavinson short-peptide series
Sequence	EDR — Glu-Asp-Arg (3 amino acids)
Molecular formula	C15H26N6O8
Molecular weight	418.40 g/mol
CAS	868047-22-3
Origin	Synthetic short peptide derived from work on pineal-tissue peptide extracts, designed at the Khavinson laboratory (St. Petersburg Institute of Bioregulation and Gerontology)
Plasma half-life	Research models: short — minutes range, characteristic of small unmodified peptides
Vial strengths (TogoPeptide)	10 mg lyophilized

Origin and structure — Khavinson short-peptide series

Pinealon belongs to a family of compounds known collectively as the Khavinson peptides — di-, tri-, tetra- and hexa-peptides synthesized as defined-sequence analogs of bioactive fractions isolated from organ-tissue peptide extracts. The Khavinson laboratory’s research programme, sustained over four decades at the St. Petersburg Institute of Bioregulation and Gerontology, progressively isolated short peptide sequences associated with tissue-specific phenotypes in research-animal models, then re-synthesized them chemically as defined small peptides that can be standardized analytically and characterized at the molecular level.

The shared design philosophy across the family is consistent: start with a peptide-complex extract from the tissue of interest, fractionate down to bioactive short sequences, identify the minimal motif associated with the activity, and produce it by chemical synthesis. The hypothesis that organizes the resulting compound family is the site-specific peptide-DNA interaction model — the proposition that very short peptides can bind specific DNA sequences in promoter regions and modulate gene-expression patterns directly, rather than acting through classical cell-surface receptor pharmacology.

Within this family, Pinealon’s tripeptide EDR is the cognitive-research-focused member; Epithalon’s tetrapeptide AEDG is the telomerase-research-focused member; Vilon (Lys-Glu) is the immune-tissue analog; Cortagen (Ala-Glu-Asp-Pro) is the brain-cortex analog; Thymalin-derived sequences cover thymic-tissue peptides. Pinealon and Epithalon share research-line overlap in cellular-aging and gene-expression literature — both are positioned as geroprotectors in the Khavinson framework — while differing in their primary published-research focus.

Mechanism — neuroprotective tripeptide

The proposed mechanism of Pinealon, as developed across the Khavinson-laboratory publications, sits at the intersection of antioxidant gene-expression regulation, anti-apoptotic signaling, and the broader site-specific peptide-DNA interaction framework that organizes the Khavinson short-peptide family. The proposed model does not invoke a classical receptor; it invokes direct or near-direct interaction between the tripeptide and chromatin/DNA, with downstream functional consequences in stress-response and neuroprotection research designs.

Antioxidant pathway modulation

Published Khavinson-laboratory research documents Pinealon up-regulation of antioxidant defence gene clusters in research-cell-line and research-animal designs — including superoxide dismutase (SOD), catalase, and glutathione peroxidase pathways [3]. Functional read-outs across the published research line include reduced lipid-peroxidation markers (malondialdehyde, conjugated dienes), reduced oxidative DNA-damage markers (8-hydroxy-2′-deoxyguanosine), and reduced protein-carbonyl content in stress-research designs. The antioxidant arm is a primary mechanism axis for Pinealon — in contrast to Epithalon, where the antioxidant phenotype is positioned as a secondary downstream consequence of telomerase-axis effects.

Gene-expression modulation

Published research documents Pinealon binding to specific DNA sequences in the Khavinson site-specific peptide-DNA interaction framework — the proposition that short defined-sequence peptides bind promoter regions and modulate chromatin accessibility and transcription-factor recruitment directly. Published gene-expression studies in research-cell-line and research-animal models document modulation of stress-response, antioxidant, and apoptosis-related gene clusters. The model is distinct from classical receptor-binding pharmacology and places the tripeptide as a chromatin-level regulator rather than a cell-surface signaling agonist.

Apoptosis pathway modulation

Published research-cell-line work documents Pinealon reducing apoptotic markers in oxidative-stress-induced cell-death research models. Reported endpoints include reduced caspase activation, reduced cytochrome-c release, reduced TUNEL-positive nuclei, and reduced expression of pro-apoptotic Bax-family transcripts. The mechanism appears partly via mitochondrial-membrane stabilization and partly via direct anti-apoptotic gene-expression modulation in the site-specific peptide-DNA interaction framework. This anti-apoptotic profile is the proposed cellular basis for the broader neuroprotection phenotype documented at the tissue and behavioural levels.

Cognitive function research

Published research documents Pinealon effects on memory consolidation and learning paradigms in research-animal models, including water-maze, passive-avoidance and conditioned-response designs, plus protection against cognitive decline in aging research-animal designs. This is the published research line that distinguishes Pinealon from Epithalon’s primarily-telomerase research focus — Pinealon is positioned in the Khavinson family as the cognitive-aging-research-focused short peptide, with the antioxidant and anti-apoptotic mechanisms framing the proposed cellular basis for the behavioural-level findings.

Neuroprotection research literature

The cell-culture findings on antioxidant gene up-regulation and apoptosis-pathway modulation have been complemented by research-animal-model work documenting neuroprotective phenotypes in published Khavinson-laboratory designs. Reported research-animal models include cerebral-ischemia paradigms (middle-cerebral-artery occlusion, global hypoxia), oxidative-stress-induced brain-damage models (hyperhomocysteinemia, prooxidant administration) and broader neurodegenerative research designs [3].

Reported endpoints in the published research line include reduced infarct size in cerebral-ischemia models, reduced neuronal apoptosis in cortical and hippocampal regions on histological examination, preserved synaptic-density markers in aged-tissue research designs, and reduced markers of neuroinflammation. The neuroprotection literature is concentrated in research-animal models under controlled vivarium conditions and frames Pinealon as a stress-response-modulating compound at the CNS-tissue level — with the antioxidant and anti-apoptotic mechanisms documented in cell-culture work as the proposed cellular basis for the tissue-level findings.

Cognitive aging research

Published Khavinson-laboratory research documents Pinealon effects in age-related cognitive-decline research-animal models. Reported endpoints include preserved performance on memory-consolidation paradigms (water-maze, passive avoidance, conditioned response), modulation of anxiety- and exploratory-behaviour measures (open-field, elevated plus-maze) in aged-animal designs, and effects on age-related cognitive biomarkers in brain tissue (synaptic-density markers, neurogenesis indicators in hippocampal regions, neurotrophic-factor expression).

Important framing: these are research-animal-model findings, not human cognition claims. The published work documents preserved cognitive performance in inbred-strain rodent designs under controlled-vivarium conditions. Translation to human cognitive function is a separate question; the human-clinical research that exists on Pinealon is concentrated in older Russian-language gerontology-clinic publications and uses outcome measures that do not map cleanly onto Western trial-design conventions [6].

Pinealon vs Epithalon — sister Khavinson peptides

Pinealon and Epithalon are the two best-characterized members of the Khavinson short-peptide family in the cellular-aging research conversation. Both share the same laboratory lineage, the same proposed site-specific peptide-DNA interaction mechanism framework, and the same geroprotector positioning. They differ in length, in primary published-research focus, and in the cellular endpoints that anchor their respective research lines. Two short Khavinson peptides, complementary research applications.

Aspect	Pinealon (EDR)	Epithalon (AEDG)
Length	Tripeptide (3 amino acids)	Tetrapeptide (4 amino acids)
Primary research focus	Cognitive + neuroprotective	Telomerase + cellular aging
Published research line	Gene expression, antioxidant, neuroprotection	Telomerase activation, telomere length, cellular-aging biomarkers
Khavinson family position	Cognitive-aging-focused	Telomere / cellular-aging-focused

The two compounds are complementary rather than substitutive. Pinealon’s research line emphasizes antioxidant gene up-regulation and anti-apoptotic effects in CNS-research models; Epithalon’s research line emphasizes telomerase reverse-transcriptase up-regulation and telomere-length effects in dividing somatic cells. Research designs probing “cellular ageing” with both compounds are probing two related but distinct mechanism axes within the same Khavinson-family framework.

Russian gerontology research lineage

Pinealon belongs to a distinct research tradition that benefits from explicit context. The St. Petersburg Institute of Bioregulation and Gerontology, founded in the Soviet period and led by Vladimir Khavinson for several decades, has produced one of the largest single-laboratory bodies of work on peptide bioregulation of ageing. Khavinson’s published output runs to several hundred peer-reviewed papers across PubMed-indexed journals, sustained collaborator networks across Russia, the United States, Germany, Italy and Spain, and a doctoral-training programme that has produced multiple second-generation researchers in the same line [1].

Russian clinical research has investigated Pinealon in cognitive-decline contexts, framed strictly as research literature distinct from the Western drug-approval pathway. The relationship of this corpus to the Western longevity- and cognition-research literature is best characterized as parallel and partially overlapping. Both lineages identify oxidative stress, neuronal apoptosis, gene-expression regulation and age-related cognitive decline as central themes. They differ in mechanistic vocabulary, in regulatory framework (the post-Soviet gerontology tradition operates outside the FDA/EMA drug-approval pathway), and in publication-venue distribution. Reading the Pinealon literature responsibly means engaging with it on its own methodological terms while noting that the Western-equivalent short-peptide neuroprotection corpus is comparatively thin [2].

Storage and handling

Pinealon ships as lyophilized powder, typically white to off-white. Standard research-handling literature documents:

• Lyophilized state: sealed at −20°C, protected from light. Stable for the manufacturer-stated window when kept cold and dry.
• Diluent: bacteriostatic water (0.9% benzyl alcohol) is the standard reconstitution diluent for the published research-handling literature on small peptides of this class.
• Reconstituted state: refrigerate at 2–8°C and protect from light. Working window for reconstituted Pinealon is approximately 28 days under refrigeration in published research-handling guidance.
• Avoid freeze-thaw cycles after reconstitution. Repeated freeze-thaw degrades short peptides through both physical (aggregation) and chemical (deamidation, hydrolysis) routes.
• Light sensitivity: the aspartate and glutamate side-chain carboxylates are not strongly photo-active, but light protection during storage and handling remains best practice.

Each TogoPeptide Pinealon shipment includes a per-batch Certificate of Analysis with HPLC purity, mass-spectrometry identity confirmation, lot number, manufacture date, and analysis date. See how to read a COA or reconstitution methodology for the methodology details.

Cross-research lines and pairings

• Khavinson-peptide-family research design: Pinealon and Epithalon as sister compounds for combined cognitive- and cellular-aging research designs. Pinealon contributes the antioxidant / anti-apoptotic / cognitive-aging arm of the Khavinson framework; Epithalon contributes the telomerase / telomere-length / replicative-senescence arm. Both share the same proposed site-specific peptide-DNA interaction mechanism.
• Cognitive Stack pairing context: Pinealon’s cognitive-research positioning overlaps with the published research lines on Selank, Semax and DSIP — short bioactive peptides from related Russian-research lineages investigated for CNS effects in research-animal models. Mechanistically distinct, but documented in adjacent research literatures.
• Reconstitution math: documented in the reconstitution calculator — Pinealon at 10 mg vial format with 418.40 g/mol molecular weight is a straightforward small-peptide reconstitution exercise.

Closing

Pinealon is the cognitive-research-focused member of the Khavinson short-peptide family — a synthetic three-residue compound (Glu-Asp-Arg) with a published research corpus documenting antioxidant gene up-regulation, anti-apoptotic effects, neuroprotection in research-animal models, and cognitive-aging research lines. Its mechanism vocabulary belongs to the Russian gerontology research lineage parallel to but distinct from Western neuropharmacology, and reading the literature on its own methodological terms is the responsible posture.

This guide documents what published peer-reviewed research has investigated. It is mechanism context for laboratory researchers, not therapeutic recommendation, not protocol guidance, not a basis for self-administration of any kind.

Source Pinealon for laboratory research:

• Pinealon product page — full identifiers, 10 mg lyophilized vial, per-batch COA
• Cognitive research compounds — full category listing
• Epithalon complete guide — sister Khavinson peptide, telomerase / cellular-aging research focus
• Longevity Stack — curated cellular-aging research bundle with adjacent short-peptide compounds

For methodology and laboratory-handling questions, contact our research-supply team at info@togopeptide.com.