Anxiolytic activity of BDNF and NT-3 dipeptide mimetics in the elevated plus maze test in mice

Parent neurotrophinCodeNeurotrophin loopThreshold dose (mg/kg, ip)Activation of post-receptor signaling cascadesIncrease in the time spent in open arms compared to the control group (times)
PI3K/AktMAPK/ERKPLC-γ1
BDNFGSB-106 [75]41.0+++++6.2
GSB-214 [75]1Not active+ns++ns
GTS-201 [75]21.0ns+++3.6
NT-3GTS-3014Not activens++++ns
GTS-302 [43]1.0+++++1.9

ip: intraperitoneally; NGF: nerve growth factor; BDNF: brain-derived neurotrophic factor; NT-3: neurotrophin-3; MAPK/ERK: mitogen-activated protein kinase/extracellular signal-regulated kinase; PLC-γ1: phospholipase C-gamma; GSB-106: bis-(N-monosuccinyl-L-seryl-L-lysine) hexamethylenediamide; GSB-214: bis-(N-monosuccinyl-L-methionyl-L-serine) heptamethylenediamide; GTS-201: bis-(N-hexanoyl-L-seryl-L-lysine) hexamethylenediamide; GTS-301: bis-(N-monosuccinyl-L-asparaginyl-L-asparagine) hexamethylenediamide; GTS-302: bis-(N-gamma-oxybutyryl-L-glutamyl-L-asparagine) hexamethylenediamide; +: the effect is inferior to the full-length neurotrophin in terms of intensity and/or duration; ++: the effect is comparable to the full-length neurotrophin in terms of intensity and duration; ns: non-significant. All effects not labeled as “ns” are statistically significant. The data on the increase in the time spent in open arms compared to the control group are presented as means. The reference drug Diazepam (1.0 mg/kg, ip) increased the time spent in open arms under the same conditions by 3.2 times