Journal: The Febs Journal
Article Title: The protease ADAMTS 5 controls ovarian cancer cell invasion, downstream of Rab25
doi: 10.1111/febs.70080
Figure Lengend Snippet: Rab25 induced ADAMTS5 expression in an NF‐κB dependent manner. (A) Schematic, NF‐κB signalling pathway. (B, C) OVCAR3 cells were treated with DMSO, 2.5, 5 or 10 μ m BAY 11‐7082 for 24 h and the mRNA levels of ADAMTS5 (B) and Rab25 (C) were measured by qPCR. Data were normalised to the DMSO control and presented as mean ± SEM from N = 3 independent experiments. The black dots represent the mean of individual experiments. **** P < 0.0001, Kruskal–Wallis test. (D, E) A2780‐DNA3, A2780‐Rab25 cells (D), OVCAR3 cells transfected with non‐targeting (si‐nt) or Rab25 targeting (si‐Rab25) si‐RNA (E) were seeded on glass‐bottom dishes, fixed, stained for NF‐κB (green), nuclei (blue) and Actin (grey), and imaged with a Nikon A1 confocal microscope. Scale bar, 50 μm. NF‐κB integrated density for the whole cell and the nucleus was measured with imagej and normalised to the cell area. Data were plotted as violin plots (median and quartiles) from N = 3 independent experiments. **** P < 0.0001, Mann–Whitney test. (F) A2780‐Rab25 were stimulated with 40 ng·mL −1 TNFα for 40 min, fixed, stained for NF‐κB (green), Actin and nuclei and imaged with a Nikon A1 confocal microscope. Scale bar, 20 μm. NF‐κB integrated density for the whole cell and the nucleus was measured with imagej and normalised to the cell area. Data were plotted as violin plots (median and quartiles) from N = 3 independent experiments. **** P < 0.0001, Mann–Whitney test. (G, H) NF‐κB and GAPDH protein levels in A2780‐DNA3 and A2780‐Rab25 cells (G) or OVCAR3 cells transfected with non‐targeting (si‐nt) or Rab25 targeting (si‐Rab25) si‐RNA (H) were quantified by Western Blotting. Membranes were imaged with a Licor Odyssey Sa system, and the band intensity was quantified by image studio lite software. The fold change of NF‐κB/GAPDH was plotted. Data are presented as mean ± SEM from N = 5 independent experiments. ** P = 0.0079 for both G and H, Mann–Whitney test. (I) CXCL8 mRNA levels in A2780‐DNA3 and Rab25 cells were quantified by qPCR and normalised to A2780‐DNA3 cells. Data are presented as mean ± SEM from N = 3 independent experiments. **** P < 0.0001, Mann–Whitney test. (J) CXCL8 mRNA levels in OVCAR3 cells transfected with non‐targeting (si‐nt) or Rab25 targeting (si‐Rab25) si‐RNA were quantified by qPCR and normalised to si‐nt. Data are presented as mean ± SEM from N = 3 independent experiments. *** P < 0.001, Mann–Whitney test. (K) CXCL8 mRNA levels in OVCAR3 cells treated with DMSO or 10 μ m BAY 11‐7082 for 24 h were quantified by qPCR and normalised to DMSO control. Data are presented as mean ± SEM from N = 3 independent experiments. **** P < 0.0001, Mann–Whitney test.
Article Snippet: The ADAMTS5 inhibitor (5‐[[5‐[[(4‐Chlorophenyl)methyl]thio]‐1‐methyl‐3‐(trifluoromethyl)‐1H‐pyrazol‐4‐yl]methylene]‐2‐thioxo‐4‐thiazolidinone;(E)‐5‐((5‐((4‐Chlorobenzyl)thio)‐1‐methyl‐3‐(trifluoromethyl)‐1H‐pyrazol‐4 yl)methylene)‐2‐thioxothiazolidin‐4‐one CAS no.: 929634‐33‐3) was from MedChemExpress, MedChemTronica, Sollentuna, Sweden reported to be a potent ADAMTS‐5 inhibitor, with an IC50 of 1.1 μ m and > 40‐fold functional selectivity over ADAMTS4 [ , ].
Techniques: Expressing, Control, Transfection, Staining, Microscopy, MANN-WHITNEY, Western Blot, Software