Journal: eBioMedicine
Article Title: H3K27me3-modulated Hofbauer cell BMP2 signalling enhancement compensates for shallow trophoblast invasion in preeclampsia
doi: 10.1016/j.ebiom.2023.104664
Figure Lengend Snippet: BMP6 mediates basal and BMP2-induced human trophoblast invasion and vascular mimicry . a-b, HTR8/SVneo cells were treated with or without 50 ng/mL BMP6 for 36 h, followed by analysis of cell invasiveness ( a ) and endothelial-like tube formation ( b ). The left panel shows representative images, and the right panel shows summarized quantitative results. Scale bar, 200 μm. c-e, HTR8/SVneo cells were treated with or without 50 ng/mL BMP6 for 6 h or 24 h, followed by RNA-seq. c , PCA showing the separation between samples. d , Heatmap depicting DEG (adjusted p value < 0.05) signatures of each group. The adjusted p value was obtained through the Benjamini-Hochberg procedure, which corrects for multiple comparisons by ranking and recalibrating individual p values, thereby minimizing false positives. e , Dot plots of significantly enriched GO terms. Dot size represents the number of DEGs from a particular term (count). f-h , Cells were transfected for 48 h with 20 nM non-targeting control siRNA or siRNA targeting BMP6 prior to treatment with or without 25 ng/mL BMP2 for 6 or 36 h. f , BMP6 mRNA levels were examined by qPCR 6 h after BMP2 treatment. g , Cell invasiveness was examined with Transwell assay. The upper panel shows summarized quantitative results; the lower panel shows representative images. Scale bar, 200 μm. h , The vascular mimicry phenotype of HTR8/SVneo cells was examined by an endothelial-like tube formation assay. The upper panels show summarized quantitative total branching points and total tube length results, and the lower panels show representative images. Scale bar, 200 μm. i , Extravillous explants from first-trimester villi were transfected with 20 nM non-targeting control siRNA or siRNA targeting BMP6 prior to treatment with or without 25 ng/mL BMP2. The migration distance of villous tips was qualified in the right panel. Scale bar, 100 μm. Each dot donates one sample and data is expressed as the mean with 95% CI. p values by two-tailed Student's t test are labeled in ( a , b ) and p values by two-way ANOVA are labeled in ( f – i ).
Article Snippet: Sera were immediately isolated, sub-bottled, and stored at −80 °C until being assayed using Human BMP6 and BMP2 ELISA kit (LSBio, LS-F4538; R&D, DBP200).
Techniques: RNA Sequencing Assay, Transfection, Transwell Assay, Tube Formation Assay, Migration, Two Tailed Test, Labeling