Written by the Core Power Peptides Research Team — biochemists and laboratory specialists compiling and verifying peptide research data. Learn about our quality standards →
Selank traces back to tuftsin, an endogenous immunomodulatory tetrapeptide — an unusual origin for a compound now studied primarily as an anxiolytic. That lineage explains something distinctive about it: unlike conventional anxiolytics, Selank retains immune-modulating activity alongside its GABAergic effects, enhancing NK cell function and macrophage activity.
N-Acetyl Selank Amidate: The Stabilized Derivative
N-Acetyl Selank Amidate is a doubly modified form of Selank — a synthetic heptapeptide (Thr-Lys-Pro-Arg-Pro-Gly-Pro) originally developed at the Institute of Molecular Genetics of the Russian Academy of Sciences as a functional analog of tuftsin, an endogenous immunomodulatory tetrapeptide. N-acetylation at the N-terminus and C-terminal amidation significantly increase proteolytic resistance compared to unmodified Selank, extending biological half-life and enhancing blood-brain barrier penetration.
Selank and its derivatives have been studied for over 30 years in Russian neuropharmacology, and Selank itself (unmodified) is approved for medical use in Russia for generalized anxiety disorder. The N-Acetyl Amidate modification represents the most stable and potent form of Selank available for research purposes, with documented activity at approximately 2–4× lower doses than parent Selank.
Mechanism of Action
- GABAergic Modulation: Enhances GABA_A receptor sensitivity through allosteric mechanisms, similar in profile to anxiolytic benzodiazepines but without receptor dependence in research models
- BDNF and NGF Upregulation: Documented increases in brain-derived and nerve growth factor expression in hippocampal and prefrontal tissue
- HPA Axis Regulation: Attenuates stress-induced cortisol elevation and normalizes HPA axis hyperreactivity in repeated-stress rodent models
- Serotonergic Effects: Increases 5-HT synthesis and turnover in limbic regions, contributing to anxiolytic and antidepressant profiles
- Enkephalinase Inhibition: Inhibits the enzyme that degrades enkephalins (endogenous opioid peptides), prolonging natural anxiety-buffering effects
- Immune Modulation: Like parent tuftsin, Selank enhances NK cell activity and macrophage function — unique among anxiolytic compounds
Research Data
Anxiety and Stress
- Significant anxiolytic effect in elevated plus maze, open field, and Vogel conflict tests in rodents — comparable to diazepam at appropriate doses without sedation
- Normalized stress-induced elevation of corticosterone without baseline cortisol suppression
- Reduced anxiety scores in Russian Phase 2 clinical trials for generalized anxiety disorder (parent Selank)
Cognitive Enhancement
- Improved spatial working memory in Morris water maze and radial arm maze protocols
- Enhanced memory consolidation following stress-induced memory impairment
- BDNF increases of ~30–50% in hippocampal tissue 24 hours post-administration
Neuroprotection
- Protected dopaminergic neurons against MPTP-induced damage in Parkinson’s cell models
- Reduced neuroinflammation markers (IL-1β, TNF-α) in LPS-challenged rodent brains
N-Acetyl Selank Research Products
HPLC Verified
N-Acetyl Selank Amidate 20mg
Purity: 99%+ HPLC
Format: Lyophilized Powder
Testing: Third-Party COA
$90
Buy Now
HPLC Verified
N-Acetyl Selank Amidate 30mg
Purity: 99%+ HPLC
Format: Lyophilized Powder
Testing: Third-Party COA
$120
Buy Now
Frequently Asked Questions
How does Selank differ from benzodiazepine anxiolytics?
Selank enhances GABA_A receptor sensitivity through allosteric mechanisms, producing a broadly comparable anxiolytic profile — but without receptor dependence in research models, and without the sedation that accompanies diazepam at similar effect sizes.
What does the N-acetyl amidate modification change?
Both modifications increase proteolytic resistance relative to unmodified Selank, extending half-life and improving blood-brain barrier penetration. The practical consequence is documented activity at roughly 2–4× lower doses than the parent peptide.
How does it compare to Semax?
They are frequently studied alongside one another and share the same modification strategy, but originate from different parent molecules — Selank from tuftsin, Semax from ACTH 4-10. Selank’s primary mechanism is GABAergic and anxiolytic; Semax leans toward BDNF-mediated cognitive and neuroprotective pathways.
Laboratory reference only. N-Acetyl Selank Amidate is supplied by Core Power Peptides for in vitro and research applications — not for human consumption, and not a substitute for medical advice.
