Journal: Neurotherapeutics
Article Title: Tumor suppressive effect of low-frequency repetitive transcranial magnetic stimulation on glioblastoma progression
doi: 10.1016/j.neurot.2025.e00569
Figure Lengend Snippet: Low-frequency rTMS suppressed tumor progression in an in vivo GBM model. The in vivo GBM model was divided into three groups: a sham group (non-treated), a low-frequency group (treated with low-frequency rTMS), and a TMZ group (treated with 30 mg/kg temozolomide). (A) Schematic figure of in vivo GBM model study. (B) MRI of brain tumor volume in sham, low-frequency, and TMZ groups ( n = 6). (C) Tumor progression of the in vitro GBM model with or without low-frequency rTMS treatment or TMZ, as measured by tumor volume in the brain from MRI. (D) Final tumor size of the in vitro GBM model with or without low-frequency rTMS treatment, or TMZ. (E) Bioluminescence images of tumor volume on the brain of sham, low-frequency, and TMZ groups ( n = 6). (F) Tumor progression of the in vitro GBM model with or without low-frequency rTMS treatment or TMZ, as measured by signal intensity of tumor mass in the brain. (G) Final signal intensity of tumor size in the in vitro GBM model with or without low-frequency rTMS treatment, or TMZ. (H) Survival rate for each group ( n = 4) was estimated based on Kaplan-Meier curves. Log-rank test ( P = 0.008). (I) Tumor mass stained by FLNA, FLNC and Ki67 antibody and H&E staining. (J) Quantification of cells stained with FLNA, FLNC and Ki67 antibody and H&E staining. (K) TUNEL assay in the in vivo GBM model with or without low-frequency rTMS treatment, or TMZ. (L) TUNEL assay quantification. (M) Tumor mass as stained by p -EphA, p -EGFR, p -ERK, p -JNK, p-p38, AKT, p -AKT, p-PI3K, p -mTOR, MMP2, and MMP9 antibody and H&E staining. (N) Quantification of cells stained with p -EphA, p -EGFR, p -ERK, p -JNK, p-p38, AKT, p -AKT, p-PI3K, p -mTOR, MMP2, and MMP9 staining. Values are presented as means ± SEM. Scale bars = 100 μm. Statistically significant differences are shown as ∗∗ P < 0.01, ∗∗∗ P < 0.001.
Article Snippet: FLNA or FLNC overexpression plasmids (CAT# RC221764, CAT# RC212462) and the negative control (NC) empty pCMV6 vector (CAT# PS100001) were purchased from Origene (Rockwill, MD, USA).
Techniques: In Vivo, In Vitro, Staining, TUNEL Assay