Selank Research Peptide — Scientific Overview
Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro) is a synthetic 7-amino-acid peptide developed at the Institute of Molecular Genetics of the Russian Academy of Sciences by the same team responsible for Semax. Selank is a structural analog of tuftsin — a natural immunopeptide derived from IgG — with additional Pro-Gly-Pro residues incorporated to enhance metabolic stability. It was developed as an anxiolytic research compound and has been studied across a range of neurological and immunological research applications.
Unlike classical anxiolytics such as benzodiazepines, which act by directly potentiating GABA-A receptor activity, Selank’s mechanism appears to involve modulation of GABAergic tone through indirect means, alongside effects on enkephalin breakdown, serotonin activity, BDNF expression, and immune function. This multi-pathway profile has made Selank a versatile research tool for studying anxiety-related neurochemistry in preclinical models.
Research Background
Russian research into Selank includes both preclinical animal studies and registered clinical trials examining its anxiolytic properties in human subjects with generalized anxiety disorder. The published animal research has examined Selank’s effects on GABA-A receptor expression, enkephalin metabolism, T-cell function, and inflammatory cytokine profiles. Selank is registered as a pharmaceutical in Russia for anxiety treatment but is not approved by the FDA.
Key Research Areas
- Anxiolytic Research: GABAergic modulation, anxiety-pathway studies in animal models
- Enkephalin Research: Met-enkephalin metabolism and opioid peptide pathway investigation
- BDNF Research: Neurotrophic factor expression studies in cortical and hippocampal tissue
- Immunological Research: T-cell function modulation and cytokine profile investigations
- Serotonin Pathway Research: Serotonergic system modulation studies in CNS models
- Neurological Research: Memory and cognitive function studies in preclinical models
Technical Specifications
| Parameter |
Value |
| Sequence |
Thr-Lys-Pro-Arg-Pro-Gly-Pro (TKPRPGP) |
| Molecular Weight |
751.9 Da |
| Purity |
≥98% (HPLC-verified) |
| Form |
Lyophilized powder, sealed under argon |
| Storage |
−20°C (long-term); 4°C (short-term) |
| Documentation |
Batch-specific COA (HPLC + Mass Spec) |
Storage & Handling (Research Laboratories)
Lyophilized Selank should be stored at −20°C for long-term preservation, protected from light and moisture. For short-term active research use, 4°C storage is acceptable for up to approximately 4 weeks. Minimize repeated freeze-thaw cycles. Follow standard laboratory peptide reconstitution and handling protocols for all experimental use.
Frequently Asked Questions — Selank Research
What is Selank and how does it differ from Semax?
Selank and Semax are both heptapeptides developed at the same Russian research institute, but with different mechanisms and research applications. Semax is derived from ACTH(4-10) and is studied primarily for its neuroprotective and cognitive effects. Selank is derived from tuftsin and studied primarily for its anxiolytic and immunomodulatory effects. Both peptides are water-soluble, metabolically stable compared to their parent sequences, and have been investigated in both animal models and Russian clinical research.
How does Selank modulate anxiety pathways in research models?
Selank’s anxiolytic effects in animal models appear to involve multiple mechanisms. Research has documented modulation of GABA-A receptor subunit expression, inhibition of enkephalin-degrading enzymes (increasing endogenous enkephalin availability), and modulation of serotonergic activity. Unlike benzodiazepines that directly bind GABA-A receptors, Selank’s effects on GABAergic tone appear indirect. The peptide’s broad-spectrum modulation across multiple anxiety-related pathways distinguishes it from single-mechanism anxiolytic compounds studied in the research literature.
What immunological research has been conducted with Selank?
Selank is derived from tuftsin — a tetrapeptide that stimulates macrophage and neutrophil function and is considered an endogenous immunostimulant. Research with Selank has examined T-helper cell (Th1/Th2) ratio modulation, cytokine profile changes (IL-6, TNF-α, and others), and effects on natural killer cell activity in various model systems. These immunological effects distinguish Selank from most other anxiolytic research compounds and have generated research interest in its potential as a combined immunomodulatory/anxiolytic tool.
Is Selank approved for human use?
Selank is registered as a pharmaceutical in Russia for treatment of anxiety disorders and is available there by prescription. However, it is not FDA-approved in the United States and should not be self-administered. Research Peptides Supplies supplies Selank for qualified laboratory research use only in controlled research settings.
What documentation is provided with Selank from Research Peptides Supplies?
All Selank supplied by Research Peptides Supplies is verified at ≥98% purity by HPLC, with identity confirmed by Mass Spectrometry. A batch-specific COA is provided with every order, documenting lot number, testing methodology, HPLC result, and MS data.
⚗️ Research Use Only: This product is strictly intended for qualified laboratory and scientific research use by trained professionals in appropriate laboratory settings. It is not intended for human or veterinary administration, therapeutic use, food supplement applications, or any use outside controlled research environments. Not for human consumption.
