Selank Research Peptide Overview

Selank is a synthetic heptapeptide combining the immunomodulatory tuftsin sequence (Thr-Lys-Pro-Arg) with a stabilizing Gly-Pro-Gly extension. This research peptide modulates GABAergic neurotransmission, monoamine balance, and immune function, making it a multifunctional tool for preclinical studies of anxiolytic mechanisms, neuroplasticity, and neuroimmune interactions.

What Is Selank ?

Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro) was developed at the Institute of Molecular Genetics as a stabilized analog of the naturally occurring immunopeptide tuftsin. The Gly-Pro-Gly extension protects against proteolytic degradation while preserving biological activity. Research has demonstrated that selank modulates GABAergic neurotransmission by influencing GABA-A receptor sensitivity and GABA transaminase activity. The peptide also affects monoamine neurotransmitter levels, including serotonin, dopamine, and norepinephrine, in brain regions associated with anxiety and mood regulation. Additionally, selank retains the immunomodulatory properties of its tuftsin core, influencing IL-6, TNF-α, and other cytokine expression. Published research has characterized selank’s effects on gene expression in the hippocampus, with significant modulation of genes involved in GABAergic signaling, neurotrophic pathways, and inflammatory responses (Zozulya et al., Bulletin of Experimental Biology and Medicine, 2001).

Selank Mechanism of Action in Research

Selank modulates GABAergic neurotransmission through effects on GABA-A receptor function and GABA metabolizing enzymes. The peptide increases serotonin metabolism in the frontal cortex and hippocampus, while modulating dopamine and norepinephrine turnover. Immunomodulatory effects involve tuftsin-mediated activation of monocytes and NK cells, with regulation of pro- and anti-inflammatory cytokine balance. Selank also influences BDNF expression, suggesting a role in neuroplasticity regulation.