Fig. 10. Inhibition of mTORC1 or PIKFYVE rescues hypermyelination in Rab35 KO cells.
a, b Schwann cells from Rab35flox/flox cKO or non-CreER-Rab35flox/flox mice (WT) mice treated with DMSO, VPS34-IN1, Cmp-19, Apilimod, or Rapamycin. a Images of DMSO- or inhibitor-treated Rab35 WT and cKO cells immunostained for p-S6 (green), total S6 (red). DAPI (blue), nuclei. b Quantification of representative data in a. Normalized (to DMSO-WT) p-S6/S6 ratio from n experiments. One sample two-tailed Student’s t-test (theoretical means of 1). DMSO: n = 6, *p = 0.0249, t = 3.168, df = 5; VPS34-IN1: n = 3, p = 0.2059, t = 1.848, df = 2; Cmp-19: n = 4, p = 0.5464, t = 0.6779, df = 3; Apilimod: n = 4, p = 0.7586, t = 0.3366, df = 3; Rapamycin: n = 3, p = 0.2241, t = 1.739, df = 2. c Images of differentiated DMSO- or inhibitor-treated Rab35 WT or cKO Schwann cells. PI(3)P (green), F-actin (red), DAPI (blue), and nuclei. d Quantification of representative data in c from n experiments. Normalized (to DMSO-WT set to 100%) PI(3)P intensity/cell area. One sample two-tailed student’s t-test (theoretical mean of 100). DMSO: n = 4, *p = 0.027, t = 4.058, df = 3; Apilimod: n = 3, p = 0.3237, t = 1.298, df = 2. e Images of inhibitor-treated Rab35 WT or cKO Schwann cells. P0 (green), F-actin (gray). f Quantification of representative data in e from n experiments. Intensity of P0/cell number (in percentage, DMSO-WT as 100%) (see Supplementary Fig. 8i). One sample two-tailed student’s t-test (theoretical means of 100). DMSO: n = 8, **p = 0.0014, t = 5.102, df = 7; VPS34-IN1: n = 5, p = 0.2093, t = 0.1.495, df = 4; Cmp-19: n = 6, p = 0.2510, t = 0.1.298, df = 5; Apilimod: n = 6, p = 0.3190, t = 0.7627, df = 5; Rapamycin: n = 4, p = 0.7541, t = 0. 3432, df = 3. Scale bars, 10 µm (a, c) or 50 µm (e). n.s. non-significant in all panels. Mean ± SEM. See Source Data file for numerical source data and unprocessed blots.