N-Acetyl Selank Amidate (20mg)

A high-purity, lyophilized synthetic peptide analogue of tuftsin, modified with N-terminal acetylation and C-terminal amidation. It is widely investigated in research models for its enhanced stability and profound anxiolytic properties, modulation of BDNF, and protective effects against stress-induced morphological and immunological changes.

Trust & Quality Verification

  • Research Use Only. Not for human or veterinary use
  • Verifiable purity via HPLC & Mass Spectrometry
  • Supplied as lyophilized powder for stability during transport and storage
  • Certificate of Analysis (COA) available per lot
  • Safety Data Sheet (SDS) available

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SKU: V-NASEL-20MG Category:

99%+

Purity Standard

HPLC

Verified Analysis

COA

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Description

N-Acetyl Selank Amidate is a synthetically modified heptapeptide research reagent derived from the endogenous immunomodulatory tetrapeptide tuftsin. It is chemically distinct from standard Selank due to the addition of an acetyl group at the N-terminus and an amide group at the C-terminus, modifications designed to resist enzymatic degradation and significantly enhance blood-brain barrier permeability. Researchers utilize this molecule to investigate the modulation of neurotrophic factors (such as BDNF), the mitigation of stress-induced morphological damage in peripheral tissues, and its broad anxiolytic and immunomodulatory effects in behavioral and physiological models.

Biochemical Characteristics

  • Sequence/Structure: Peptide (7 amino acids); Ac-Thr-Lys-Pro-Arg-Pro-Gly-Pro-NH2; N-acetyl and C-amide modified heptapeptide analogue of tuftsin.
  • Permeability: Demonstrates exceptional ability to cross the blood-brain barrier due to its modified, uncharged termini, facilitating robust central nervous system interactions.
  • Stability: Supplied as a lyophilized salt to ensure long-term stability. The terminal acetylation and amidation prevent rapid proteolytic cleavage by exopeptidases, drastically increasing its half-life compared to the unmodified peptide.
  • Specificity: Highly specific modulator of central neurotrophin expression and cytokine/chemokine receptor signaling, acting primarily as an anxiolytic and systemic stress-buffer.

Chemical Properties

Property Specification
Molecule Name N-Acetyl Selank Amidate
Synonyms NA-Selank Amidate; Ac-TKPRPGP-NH2
PubChem CID N/A
Molecular Formula C35H60N12O9
Molecular Weight 792.9 g/mol
Form Lyophilized Powder
Purity $\ge99\%$ (Verified via HPLC)
Solubility Soluble in water and aqueous buffers (refer to SDS)
Documentation COA and SDS available per lot

N-Acetyl Selank Amidate is strictly for laboratory research and is commonly employed in the following investigational areas:

Anxiety and Behavioral Neurobiology

Research models utilize this modified peptide to evaluate its potent anxiolytic properties. Investigations focus on the mitigation of stress responses and the protection against ethanol-induced memory impairment, quantifying associated neurochemical shifts in regions like the hippocampus and prefrontal cortex.

Immunomodulation and Cytokine Signaling

Experimental protocols employ the molecule to characterize its effects on the immune system. Studies assess its capacity to drive systemic changes in the expression of key chemokines, cytokines, and their respective receptors, mapping the crosstalk between the nervous and immune systems.

Stress-Induced Morphological Protection

In physiological research, N-Acetyl Selank Amidate is used to study the physical impact of chronic stress. Researchers evaluate its protective effects on the gastrointestinal tract and other peripheral organs, specifically measuring its ability to prevent morphological changes in the large intestine during chronic restraint stress models.

Pathway / Mechanistic Context

The primary mechanism of action for N-Acetyl Selank Amidate in research settings involves its pleiotropic regulatory influence on neurotrophin expression, immune signaling, and stress allostasis.

  • Neurotrophin Modulation: Specifically upregulates Brain-Derived Neurotrophic Factor (BDNF) in the hippocampus and prefrontal cortex, enhancing synaptic plasticity and preserving memory under neurotoxic stress.
  • Cytokine and Chemokine Regulation: Modulates the expression of central and peripheral inflammatory cytokines and chemokine receptors, exerting a robust immunomodulatory effect to maintain homeostasis.
  • Stress Allostasis and Anxiolytic Activity: Functions as a potent peptide-based anxiolytic by buffering the physiological and morphological responses to chronic stress, likely through downstream interactions with central inhibitory pathways and the preservation of tissue integrity.

Preclinical Research Summary

Published preclinical literature documents the extensive investigation of Selank and its modified analogues across diverse experimental models focusing on neurology, immunology, and stress.

  • In behavioral neurobiology models, Selank protected against ethanol-induced memory impairment by significantly regulating BDNF content in the hippocampus and prefrontal cortex.
  • Investigations into immune-nervous system crosstalk demonstrated that the peptide drives significant changes in the expression of chemokines, cytokines, and their respective receptors.
  • In models of chronic restraint stress, Selank treatment prevented stress-induced morphological damage and protected the tissue integrity of peripheral organs, such as the large intestine.
  • Comprehensive molecular reviews confirm the peptide’s classification as a powerful anxiolytic with diverse neuroprotective and cytoprotective biological activities.

Form & Analytical Testing

  • Solid-Phase Peptide Synthesis and Terminal Modification
  • Lyophilization
  • Identity Verification: Mass Spectrometry (MS) to confirm molecular weight and identity.
  • Purity Verification: High-Performance Liquid Chromatography (HPLC) is performed to ensure the product meets the purity standard.

Referenced Citations

References are provided for informational purposes only and are not clinical claims.

  • Vyunova, T., Andreeva, L., Shevchenko, K., & Myasoedov, N. (2018). Peptide-based Anxiolytics: The Molecular Aspects of Heptapeptide Selank Biological Activity. Protein and peptide letters, 25 10, 914-923. https://doi.org/10.2174/0929866525666180925144642.
  • Kolik, L., Nadorova, A., Antipova, T., Kruglov, S., Kudrin, V., & Durnev, A. (2019). Selank, Peptide Analogue of Tuftsin, Protects Against Ethanol-Induced Memory Impairment by Regulating of BDNF Content in the Hippocampus and Prefrontal Cortex in Rats. Bulletin of Experimental Biology and Medicine, 167, 641 – 644. https://doi.org/10.1007/s10517-019-04588-9.
  • Kolomin, T., Mikhalskaia, P., & Sedelnikova, A. (2023). Changes in Expression of Chemokines, Cytokines and their Receptors under the Action of Selank and its Fragments. Journal of Clinical Physiology and Pathology. https://doi.org/10.59315/jiscpp.2023-2-2.16-18.
  • Mukhina, A., Mishina, E., Bobyntsev, I., Medvedeva, O., Svishcheva, M., Kalutskiĭ, P., Andreeva, L., & Myasoedov, N. (2020). Morphological Changes in the Large Intestine of Rats Subjected to Chronic Restraint Stress and Treated with Selank. Bulletin of Experimental Biology and Medicine, 169, 281 – 285. https://doi.org/10.1007/s10517-020-04868-9.
  • Stable at room temperature for up to 90 days. For long-term storage, keep at -20°C (-4°F) or colder.
  • Once mixed with a solvent (e.g., bacteriostatic water), the solution must be stored at 4 °C (39°F) and utilized within 30 days. Avoid repeated freeze-thaw cycles, as this degrades the peptide structure.

RESEARCH USE ONLY

This product is intended strictly for laboratory research use only. It is not for human or veterinary use. It is not intended for diagnosis, treatment, cure, or prevention of any disease. All purchases are subject to our Terms of Service and Purity Guarantee.

No COAs available for this product.

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RESEARCH USE ONLY

This product is intended strictly for laboratory research use only. It is not for human or veterinary use. It is not intended for diagnosis, treatment, cure, or prevention of any disease. All purchases are subject to our Terms of Service and Purity Guarantee.

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