Journal: Redox Biology
Article Title: Excessive ER-mitochondria coupling: A DRP1-driven mechanism underlying mitochondrial dysfunction and impaired autophagy in stress-induced depression-like behavior in mice
doi: 10.1016/j.redox.2026.104121
Figure Lengend Snippet: CSDS upregulates Drp1 expression in hippocampal neurons. A) Differential protein volcano map of CSDS group and Control group (n = 3 samples per group; each sample pooled from 6 hippocampi). Red: significantly upregulated (fold change >1.5); blue: significantly downregulated (fold change >1.5); gray: non-significant. B) CO-IP analysis of Drp1 protein and its ubiquitination level in hippocampus of three groups of mice. One-way ANOVA with Tukey's multiple comparisons test (Treatment, F (2, 15) = 162.8, P < 0.0001; Treatment, F (2, 15) = 12.10, P = 0.0007). Data are expressed as mean ± SEM (n = 6 mice per group). ∗∗ p < 0.01, ∗∗∗ p < 0.001 C) Representative images of Drp1 (green), MAP2 (neuron, red) and DAPI (nucleus, blue) in CA1 of two groups (left) and Pearson correlation coefficient was quantitatively analyzed (right, n = 5 mice brain slices). Scale bar: 50 μm. D) Experimental timeline of viral injection and CSDS modeling; Representative confocal Z-stack 3D reconstructed images of dendritic spines in CA1 (left) and dendritic spines was quantitatively analyzed (right, n = 5 mice brain slices). Scale bar: 2 μm. Student's t -test (P = 0.0041; P = 0.0006). Data are expressed as mean ± SEM. ∗∗ p < 0.01, ∗∗∗ p < 0.001. E) Representative images of Drp1 (green), VGLUT2 (Neuron, red) and DAPI (nucleus, blue) in hippocampal CA1 region of two groups (left) and the percentage of co-localized fluorescence was quantified (right). Scale bar: 50 μm. Two-way ANOVA with Tukey's multiple comparisons test (Interaction, F (2, 24) = 2.671, P = 0.0897). The data were expressed as mean ± SEM (n = 5 mice brain slices). ns, p > 0.05.
Article Snippet: Multiplex staining was performed using TSA-based immunofluorescence with primary antibodies: Drp1 (CST 12741S, 1:100), MAP2 (ab32454, 1:1000), GFAP (CST 12389, 1:400), IBA1 (ab178846, 1:1000), Vglut1 (CST #27181, 1:800), Vglut2 (ab216463, 1:250), OLIG2 (CST #65915, 1:400), and LAMP1 (CST 99437S, 1:100).
Techniques: Expressing, Control, Co-Immunoprecipitation Assay, Ubiquitin Proteomics, Injection, Fluorescence
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