Selank Research Brief: A Tuftsin Analogue in Rodent Anxiety Models
Selank is a synthetic heptapeptide analogue of tuftsin, studied for anxiety-like behaviour without the sedation typical of anxiolytics. This brief summarises the rodent stress, ethanol and withdrawal studies and their limits.
LWL Research Brief
Evidence · Preliminary01Rodent behavioural studies plus a mechanistic review.
- 02Population
- Rats and mice in chronic-stress, ethanol and morphine-withdrawal models.
- 03Intervention
- Selank, a synthetic heptapeptide analogue of tuftsin.
- 04Primary endpoint
- Anxiety-like behaviour, memory impairment and withdrawal signs.
05Results
- In a chronic mild stress rat model, Selank enhanced the anxiety-reducing effect of diazepam (Behav Neurol 2017).
- In rodents, Selank protected against ethanol-induced memory impairment (2019) and attenuated signs of morphine withdrawal (2022).
06Limitations
- Cited evidence is animal; human data are mainly Russian clinical reports not replicated internationally.
07What this evidence does NOT demonstrate
- Anxiety, focus or mood outcomes in people.
- That rodent behaviour models predict human response.
08Citations
- Peptide-based anxiolytics: molecular aspects of Selank activity (review). Protein Pept Lett, 2018. PMID 30255741 ↗
- Selank enhances the effect of diazepam in chronic mild stress. Behav Neurol, 2017. PMID 28280289 ↗
- Selank protects against ethanol-induced memory impairment. Bull Exp Biol Med, 2019. PMID 31625062 ↗
Summary of published literature · For research use only · Not medical advice
Selank is a synthetic analogue of tuftsin, a naturally occurring immune-modulating peptide, with the same proline-glycine-proline stabilising tail used on Semax to slow enzymatic breakdown. The two peptides come from the same Russian research programme and are often studied together.
The trade-off it is studied against
Conventional anxiolytics generally work by potentiating GABA, the brain's main inhibitory signal. Turning inhibition up broadly reduces anxiety, and it also reduces alertness, reaction time and memory formation — because those depend on the same signalling being able to fire.
Selank is investigated for anxiolytic activity through different signalling, and the research interest is specifically that the sedation and cognitive cost associated with GABAergic compounds is not reported in the same way. Whether it replicates at scale is exactly what the ongoing work is for — but that is the question being asked.
Serotonin, BDNF and the immune link
The mechanistic research points in three directions at once: modulation of serotonergic signalling, effects on BDNF expression similar in kind to Semax, and immune-modulating activity inherited from its tuftsin origin. That breadth is unusual and is part of why it is difficult to summarise in one sentence.
Where the research clusters
- Anxiety endpoints: the primary line of work.
- Cognitive performance under stress: where the no-sedation question is actually tested.
- Sleep quality: studied as a downstream effect rather than a sedative one.
- Immune signalling: the tuftsin inheritance.
Why it pairs with Semax
Semax is studied for attention and plasticity; Selank for stress load. Run together they cover the two halves of cognitive performance that limit each other — being sharp is not much use when you are overloaded, and being calm is not much use when you are dulled. That is the reasoning behind the Cerebral Stack.
What we supply
Our Selank is a 10 mg lyophilised vial, HPLC-verified, with a purity Certificate of Analysis available on request.
Supplied strictly for laboratory research purposes. Not for human or veterinary use.
Research synergies · compounds that fit together
Focus and calm, studied as a pair
Semax + Selank
Semax, an ACTH(4–10) analogue, is studied for raising BDNF and neurotrophin expression. Selank, a tuftsin analogue, is studied for an anxiolytic profile linked to GABA-related signalling. Researchers pair a "drive" peptide with a "calm" peptide to look at attention under lower stress, which is the logic of the Cerebral stack.
Reviewed for research accuracy. Educational / research context only — not medical advice.
