Аннотация:The putative endogenous tripeptide ligand of the translocator protein (TSPO) l-phenylalanyl-l-tryptophanyl-l-leucine amide was obtained using the drug-based peptide design strategy and molecular modeling. This tripeptide demonstrated anxiolytic activity in the elevated plus-maze test and antidepressant-like activity in the forced swimming test in BALB/c mice at the doses of 10 mg per kg (i.p.) and also showed neuroprotective activity in the concentration range of 0.1–10 mM in vitro under conditions of oxidative stress using HT-22 neuronal cell line.