Selank

Shop Selank from Eternal Peptides, a U.S.-based supplier of research compounds known for consistent quality and third-party verification. Every batch is tested to ≥99% purity by independent laboratories such as Janoshik and Finnrick, with full Certificates of Analysis provided for transparency. Orders are shipped quickly and securely via USPS, with responsive customer support available by phone and email. This product is strictly intended for laboratory research use only.

What is Selank?

Selank is a synthetic heptapeptide with the amino acid sequence Thr–Lys–Pro–Arg–Pro–Gly–Pro. It is a stabilized analogue of tuftsin, a naturally occurring tetrapeptide derived from immunoglobulin G (IgG), which is involved in immune signaling and neuroimmune communication. The structural extension and modifications in Selank were designed to enhance stability and prolong biological activity while preserving its core regulatory properties.

Originally developed in Russian research institutions, Selank was studied as part of broader efforts to explore short regulatory peptides involved in stress biology and brain-immune interactions.

Scientific research has mainly focused on Selank’s effects on central nervous system signaling. Studies suggest it may influence GABA-related pathways, including potential modulation of GABA-A receptor activity, as well as broader effects on serotonin and dopamine systems.

Preclinical research in animals has examined its effects on behavior, learning, memory, and neurochemical regulation, along with possible influences on BDNF expression and enkephalin metabolism. These suggest multi-pathway neuromodulatory activity rather than a single defined mechanism.

However, human data remains limited, and most evidence comes from laboratory and animal models. All findings should therefore be interpreted strictly within a research context and not considered clinical outcomes.

Eternal Peptides provides Selank as a high-purity lyophilized peptide, verified through third-party testing and accompanied by a Certificate of Analysis. The lyophilized form improves stability during storage and transport and supports accurate reconstitution in controlled laboratory environments. This compound is sold strictly for research use only.

How Selank Works (Mechanistic Overview)

Selank, as a tuftsin analogue, is studied for its ability to influence multiple neurochemical and immune pathways rather than acting on a single receptor system. Research links it to changes in inhibitory neurotransmission, endogenous peptide regulation, neurotrophic factors, and immune signaling.

GABA System Modulation

Gene expression studies suggest Selank may alter components of GABA-related signaling pathways. Research by Volkova (2016) and Filatova (2017) observed changes in transcripts associated with inhibitory neurotransmission in cellular models, supporting its use in anxiety and cognition research paradigms.

This indicates a possible role in regulating inhibitory brain signaling, although the exact mechanism is still being investigated.

Enkephalinase Inhibition

Biochemical studies show Selank may inhibit enkephalinase, the enzyme responsible for breaking down enkephalins. This could extend the activity of endogenous opioid peptides in experimental systems, potentially influencing stress and behavioral responses in animal models.

Neurotrophic Effects (BDNF)

Some preclinical studies suggest Selank may influence brain-derived neurotrophic factor (BDNF), a protein involved in neuronal growth, synaptic plasticity, and cognitive processes. Findings remain preliminary and vary across models.

Immune and Cytokine Modulation

Due to its similarity to tuftsin, Selank has been studied for effects on immune signaling. Animal and limited human studies indicate potential changes in cytokine expression, suggesting interactions between nervous system activity and immune regulation.

Research Context and Limitations

Most evidence for Selank comes from laboratory and animal research, including transcriptomic and behavioral studies. Human clinical data is limited, and mechanisms are not fully defined. All findings should be viewed strictly as preclinical observations without confirmed clinical relevance.

Selank Research Applications

Anxiety and Stress Models

Animal studies commonly use Selank in behavioral tests such as the elevated plus maze and open field assays. Results often show changes in exploratory behavior and stress responses, alongside alterations in gene expression in brain regions involved in emotion regulation.

Cognitive and Memory Studies

Research in learning and memory tasks suggests potential effects on attention, task performance, and memory formation in stressed animals. These findings are often linked to its effects on neurotransmitter systems.

Neuroimmune Research

Selank is also used to study the interaction between immune signaling and brain activity. Changes in cytokine profiles observed in experiments suggest possible neuroimmune communication effects.

Neurotransmitter Regulation

Transcriptomic data indicates possible modulation of GABAergic and monoaminergic systems. Rather than acting directly on receptors, Selank appears to influence regulatory gene networks involved in neural balance.

Peptide Characteristics

Storage & Handling

Store lyophilized Selank at -20°C, protected from light and moisture. After reconstitution, store at 2–8°C for short-term use or freeze aliquots for longer storage. Avoid repeated freeze–thaw cycles. Use sterile laboratory techniques and follow institutional safety guidelines. This compound is strictly for research use only.

Quality Assurance (COA)

Each batch includes a Certificate of Analysis confirming identity, purity, and quality using HPLC and/or mass spectrometry. Additional testing may include endotoxin and sterility checks depending on the batch. All data is traceable and available for verification.

Legal Disclaimer

Selank is intended strictly for laboratory research purposes only and is not approved for human or veterinary use. Buyers are responsible for complying with all applicable regulations and institutional policies. Any misuse or misrepresentation is prohibited.