Home · Research Catalog · Selank

Cognitive Research

Selank: Research Overview

What is Selank? Selank is a synthetic heptapeptide analog of tuftsin, the endogenous immunomodulatory tetrapeptide, extended with a C-terminal Pro-Gly-Pro sequence. Developed in Russia, it is studied in preclinical laboratory models of anxiety-related behavior and immune modulation. It is supplied strictly for laboratory research use.
VP Peptides verified packaging with independent COA and QR authentication
Verified VP Peptides packaging · COA with every batch · scan to verify
≥99% HPLC purity COA with every batch 3rd-party tested Research use only

Technical profile

CompoundSelank (tuftsin-PGP analog)
ClassSynthetic heptapeptide (7 amino acids)
SequenceThr-Lys-Pro-Arg-Pro-Gly-Pro
Sequence originAnalog of the endogenous tetrapeptide tuftsin, extended with a C-terminal Pro-Gly-Pro sequence
Molecular weight~751.9 g/mol (approximate)
Origin of developmentDeveloped in Russia; holds regulatory approval there. Not approved by the FDA or EMA
Form suppliedLyophilized powder, sealed vial
StorageLyophilized: 2–8 °C, protected from light.
VerificationHPLC purity ≥99%, sterility, endotoxins, heavy metals — documented on the batch COA

What does the research literature cover?

As with Semax, most published Selank work comes from Russian research groups and is preclinical in nature. Animal-model and laboratory studies have examined the peptide in the context of:

Important context: outside of the Russian regulatory setting, the evidence base is largely preclinical and has not been replicated through large, independent, peer-reviewed clinical programs. Summaries here describe what researchers have studied — they are not claims about effects in humans.

Why purity matters for Selank research

Arginine- and lysine-containing short peptides are prone to synthesis byproducts and counter-ion variability, both of which shift the measured mass and can confound experimental readouts. Every VP Peptides Selank batch ships with a Certificate of Analysis documenting ≥99% HPLC purity plus sterility, endotoxin and heavy-metal testing from independent third-party testing.

Request catalog access

Frequently asked questions

Is Selank approved by the FDA or EMA?

No. Selank is not approved by the FDA or the EMA for any use. It was developed in Russia and holds regulatory approval in that jurisdiction only; that approval carries no standing in the United States, the European Union, or elsewhere. VP Peptides supplies it strictly as a research chemical for in-vitro and laboratory investigation — not as a drug, supplement, or food ingredient.

What does a Selank Certificate of Analysis include?

Each batch COA documents HPLC purity (≥99% specification), sterility, endotoxin and heavy-metal screening results, along with batch number and test date.

How should Selank be stored in the lab?

Lyophilized vials should be kept at 2–8 °C and protected from light.

What is tuftsin, and how does Selank relate to it?

Tuftsin is a naturally occurring tetrapeptide (Thr-Lys-Pro-Arg) derived from the heavy chain of immunoglobulin G, long studied for its role in immune-cell activity. Selank is a synthetic analog that carries the tuftsin sequence with a C-terminal Pro-Gly-Pro extension, a modification researchers introduced to alter the molecule's stability profile.

A closer look at the GABAergic and immune literature

Two mechanistic threads dominate the preclinical Selank literature, and it is useful to separate them. The first is the peptide's relationship to GABAergic signalling. Molecular reviews of Selank describe it as a heptapeptide studied for interactions with the GABA system, and cell-based and animal studies have measured changes in the expression of genes tied to GABAergic neurotransmission after exposure to the peptide (Volkova et al., 2016; Vyunova et al., 2018). In these designs the endpoints are molecular and behavioural markers in laboratory systems, and the peptide is used as a probe rather than treated as an established agent.

The second thread reaches back to Selank's parent sequence. Selank is a synthetic analog of tuftsin, an endogenous tetrapeptide long associated with immune-cell activity, and part of the literature examines Selank in immunological terms. Gene-expression studies, for example, have profiled changes in chemokine, cytokine, and receptor transcripts in response to Selank and its fragments (Kolomin et al., 2011). This dual character — a molecule sitting at the intersection of neuropeptide and immunopeptide research — is why Selank appears in two otherwise distinct experimental communities.

As with the other compounds on this catalog, the framing matters. These citations report what was measured in cells and animals; they are not statements about effects of the research material in humans. Selank holds regulatory approval only in Russia and is not approved by the FDA or EMA. Because short arginine- and lysine-containing peptides are prone to synthesis byproducts, a documented purity profile is what lets one experiment be compared with another.

Selected research references

Related research compounds

Research use only. All products described on this page are furnished for laboratory research purposes only and are not for human or veterinary use, not for use in food or cosmetics, and not for any diagnostic or therapeutic application. Nothing on this page is medical advice or a claim of safety or efficacy in humans. Research summaries reference publicly available preclinical literature; specific citations are listed in the references above.