Journal: Acta Neuropathologica Communications
Article Title: Tumor-like proliferation of CCM3 knockout endothelial cells: insights from semaxinib treatment and transcriptome profiling of co-cultures
doi: 10.1186/s40478-026-02283-1
Figure Lengend Snippet: Screening of a cytokine inhibitor library in co-cultures of CCM3 KO and WT iECs. A Scheme of the library screening approach (Created in BioRender. Pilz, R. (2026) https://BioRender.com/lhhhtxj ). B Scheme of the image and data analysis strategy (Created in BioRender. Pilz, R. (2026) https://BioRender.com/o4wswi1 ). The Operetta CLS High-Content Imaging System was used to calculate the total number of nuclei, to allocate the cells to red or green fluorescence (colored outlines of the cells), and to quantify the percentage of green cells of the total cell count per well. The total cell count was used to exclude cytotoxic compounds. Then, statistical analysis was performed to identify hits. C Example of the readout strategy. The first two panels show fluorescence imaging of mEGFP (labeled cytoplasm of AICS-0036 cells), mTagRFP-T (labeled plasma membrane of AICS-0054 cells), and Hoechst 33342 (nuclei) (scale bar = 500 μm). The two panels on the right illustrate the software’s detection and allocation strategy, with an enlarged section for clarity. Nuclei of AICS-0036 cells are outlined in green, while nuclei of AICS-0054 cells are outlined in red. D Representative illustrations of the high-content imaging of plates from one experimental run. The library (compounds) was tested in co-cultures of CCM3 KO (mEGFP) and WT (mTagRFP-T) iECs. DMSO-treated AICS-0036 CCM3 KO/AICS-0054 WT and AICS-0036 WT/AICS-0054 WT co-cultures were used as controls (two columns on the right). E Results of the compound screening showing the percentage of green KO cells from the total cell count for each compound (bars) after excluding cytotoxic compounds. Data are presented as means and SD ( n = 4). All conditions that showed a proportion of green KO cells higher or lower than 50% (purple lines) of the DMSO-treated KO/WT control (highlighted in red) are highlighted in blue. Statistical analysis was performed using one-way ANOVA with Dunnett’s correction (* = Padj < 0.05; *** = Padj < 0.001). All compound-treated conditions were compared against the DMSO-treated control
Article Snippet: The TargetMol cytokine inhibitor library (#L3600, TargetMol Chemicals Inc., Boston, MA, USA; status 2022) was added two hours after seeding at a final concentration of 10 μM per well.
Techniques: Library Screening, Imaging, Fluorescence, Cell Characterization, Labeling, Clinical Proteomics, Membrane, Control