Journal: Neurobiology of Stress
Article Title: USP11 drives stress-induced synaptic structural deficits and depression-like behaviors through GSK3β/mTOR signaling
doi: 10.1016/j.ynstr.2026.100791
Figure Lengend Snippet: USP11 knockout alleviates stress-induced depressive-like behaviors and associated with mTOR Signaling (A) Western blot analysis of USP11 (110 kDa), p-mTOR (Ser2448, 289 kDa), total mTOR (289 kDa), p-GSK3β (Ser9, 47 kDa), total GSK3β (47 kDa), PSD95 (95 kDa), and Tubulin (55 kDa) in mouse mPFC from wild-type (WT) and USP11 knockout (USP11 −/− ) male mice (n = 6, Tubulin as loading control). (B–E) Quantification of baseline protein band intensity in wild-type control (WT-CON) and USP11 knockout control (KO-CON) groups: (B) USP11 (relative to Tubulin, p < 0.0001), (C) p-GSK3β (relative to total GSK3β, p = 0.0072), (D) p-mTOR (relative to total mTOR, p = 0.0028), (E) PSD95 (relative to Tubulin, p = 0.0159). n = 6/group. (F–I) Behavioral results for four groups: WT-CON, KO-CON, WT-CUMS, and KO-CUMS (OFT, distance [cm], F [3, 28] = 8.234, p = 0.0004; OFT, velocity [cm/s], F [3, 28] = 8.233, p = 0.0004; FST, F [3, 28] = 8.721, p = 0.0003; TST, F [3, 29] = 5.378, p = 0.0046). n = 8/group. (J) Western blot analysis of USP11 (110 kDa), p-mTOR (Ser2448, 289 kDa), total mTOR (289 kDa), SYN (synaptophysin, 77 kDa), and Tubulin (55 kDa) in mPFC from all four groups (n = 3). (K-M) Quantification of (K) USP11 (relative to Tubulin, F (3, 8) = 139.5, p < 0.0001), (L) p-mTOR (relative to total mTOR, F (3, 8) = 8.298, p = 0.0077), (M) SYN (relative to Tubulin, F (3, 8) = 8.811, p = 0.0065). n = 3/group. (N) Schematic overview of the experimental design, including a 7-day acclimation period, a 28-day chronic unpredictable mild stress (CUMS) procedure, the rapamycin dosing regimen (3 mg/kg, i.p., three times per week; from day 14 of CUMS until 24 h before tissue collection), and the behavioral test battery in male USP11 −/− mice. (O-R) Behavioral results for three groups in USP11 −/− mice: CON + Veh, CUMS + Veh and CUMS + Rapa. (SPT, F (2, 18) = 7.019, p = 0.0056; OFT, center time [s], F [2, 18] = 8.788, p = 0.0022; OFT, velocity [cm/s], F [2, 18] = 0.09090, p = 0.9135; TST, F [2, 18] = 7.797, p = 0.0036). n = 7/group.) (T) Quantification of p-mTOR (relative to total mTOR, F (2, 6) = 38.49, p = 0.0004) Data are shown as mean ± SEM. Determined by t -test (baseline comparisons) or one-way ANOVA (multiple groups) unless otherwise indicated. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001. (S) Representative immunoblots of p-mTOR (Ser2448, 289 kDa), total mTOR (289 kDa) in USP11 −/− mice under the indicated conditions. (n = 3, Tubulin as loading control).
Article Snippet: The USP11 knockout (USP11-KO) mice in C57BL/6N background were generated by Cyagen Company (Suzhou, China).
Techniques: Knock-Out, Western Blot, Control, Battery