Journal: Cell reports
Article Title: The RNA-binding protein EIF4A3 promotes axon development by direct control of the cytoskeleton
doi: 10.1016/j.celrep.2024.114666
Figure Lengend Snippet: (A) Left: canonical RNA regulation by the exon junction complex (EJC) composed of core components EIF4A3, RBM8A, and MAGOH. Right: the question addressed in this study. How do EJC components control neuronal development?. (B) Coronal section from a control ( Eif4a3 lox/lox ) E17.5 mouse cortex, stained with L1CAM and Hoechst. (C) Higher-magnification images from the region indicated by the dashed box in (B), stained with L1CAM and CC3. White bracket, cortical axonal tract thickness. Arrow, region with apoptotic nuclei. (D) Fold change of L1CAM+ axonal thickness in E17.5 Magoh, Rbm8a, and Eif4a3 cHet and cKO cortices relative to control ( Magoh lox/lox , Rbm8a lox/lox and Eif4a3 lox/lox , respectively). ** p = 0.0065, one-way ANOVA (Dunnett’s multiple-comparisons test), n = 3–6 embryos. (E) CC3+ cell density in E17.5 Magoh, Rbm8a, and Eif4a3 cHet and cKO relative to control ( Magoh lox/lox , Rbm8a lox/lox , and Eif4a3 lox/lox , respectively). ** p < 0.01, *** p < 0.001, one-way ANOVA (Dunnett’s multiple-comparisons test), n = 3 embryos. (F) Coronal sections of control ( Eif4a3 lox/lox ; p53 lox/lox ) and Eif4a3; p53 dcKO E17.5 mouse cortices, stained with L1CAM, CC3, and Hoechst. White bracket, cortical axonal tract thickness. (G) Fold change of L1CAM+ cortical axonal thickness in E17.5 Eif4a3, p53 dcHet, and dcKO relative to control ( Eif4a3 lox/lox ; p53 lox/lox ). ** p = 0.0099, one-way ANOVA (Dunnett’s multiple-comparisons test), n = 4 embryos. (H) Fold change of L1CAM+ fibers/cortical thickness ratio from E17.5 Eif4a3 cKO relative to control ( Eif4a3 lox/lox ) and on a p53 background. * p = 0.0491, *** p < 0.001, one-way ANOVA (Dunnett’s multiple-comparison test), n = 6 embryos. All graphs, mean + SD; ns, not significant. Scale bars: 500 μm (B), 100 μm (C), and 50 μm (F). See also and .
Article Snippet: Rat monoclonal anti-Neural Cell Adhesion Molecule L1 (L1CAM) (clone 324) , Millipore , Cat#MAB5272; RRID:AB_2133200.
Techniques: Control, Staining, Comparison