ALK5 inhibition induces ubiquitin‐mediated degradation of Smad4 in CD8+ T cells in melanoma‐bearing mice Source data is available for this figure in the.

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ALK5 inhibition induces ubiquitin‐mediated degradation of Smad4 in CD8+ T cells in melanoma‐bearing mice Source data is available for this figure in the Supporting Information. ALK5 inhibition induces ubiquitin‐mediated degradation of Smad4 in CD8+ T cells in melanoma‐bearing mice Source data is available for this figure in the Supporting Information. PLA (red) show the close proximity between ubiquitin and Smad4 in the dLN cells co‐stained with anti‐CD8 (green) (scale bars: 5 µm, 50 µm). Graphs show mean PLA signals in nuclei (black) and cytoplasms (white) quantified using BlobFinder software.Upper panel shows endogenous ubiquitinated Smad4 and lower panel shows ubiquitinated proteins in CD8+ and CD8− dLN cells. Ubiquitinated proteins were captured using an UbiQapture™‐Q kit and blotted with anti‐Smad4 or anti‐ubiquitin antibody. Molecular weight of Smad4 is 70 kD.Western blots show Smads in CD4+ and CD8+ cells stimulated with anti‐CD3/CD28 with/without EW‐7197 and/or MG‐132 for 3 days.IP‐Western blot shows endogenous ubiquitinated Smad4 in CD4+ and CD8+ cells stimulated with anti‐CD3/CD28 with/without EW‐7197 and/or MG‐132 for 3 days.Representative immunohistochemistry sections of inoculated melanomas (scale bar: 100 µm). Graph shows the subcellular distributions of Smad4 expression in melanoma cells calculated by ImageJ software. The expression ratios of nucleus to cytoplasm are shown.Smad4 protein in B16 cells was detected by PLA (red; scale bars: 10 µm; left). The expression ratios of nucleus to cytoplasm are shown. Graph shows the subcellular distributions of Smad4 in B16 cells. Western blots show Smads in B16 cells cultured with EW‐7197 with or without TGF‐β1 (right). Jeong‐Hwan Yoon et al. EMBO Mol Med. 2013;5:1720-1739 © as stated in the article, figure or figure legend