Journal: Advanced Science
Article Title: Targeting the KAT8/YEATS4 Axis Represses Tumor Growth and Increases Cisplatin Sensitivity in Bladder Cancer
doi: 10.1002/advs.202310146
Figure Lengend Snippet: KAT8 inhibits ubiquitination‐mediated proteasomal degradation of YEATS4. A) Schematics of the proximity labeling assay using YEATS4‐V5‐TurboID‐construct. B) HEK293T cells were cotransfected with the indicated constructs for 48 h, and then subjected to IP using HA‐agarose beads followed by Western blotting. C) T24 cells were subjected to co‐IP by using anti‐YEATS4 or anti‐IgG to detect endogenous KAT8. D and E) Western blotting of the indicated proteins in the indicated stable cells infected with KAT8‐targeted sgRNAs (D) or treated with or without 50 µM MG149 for 48 h (E). Data are representative of 3 independent experiments. F and G) The indicated stable cells expressing KAT8‐targeted sgRNAs were treated with 40 µg/ml CHX at the indicated time points and then were lysed and analyzed by Western blotting (F). Quantitation of YEATS4 protein levels was based on the Western blotting results (G). H and K) HEK293T cells were cotransfected with the indicated plasmids for 48 h and then subjected to immunoprecipitation using streptavidin beads followed by Western blotting. WCL, whole cell lysate. I and J) HEK293T cells cotransfected with the indicated plasmids for 12 h were treated with 40 µg/ml CHX at the indicated time points and then were lysed and analyzed by Western blotting (I). Quantification of YEATS4 protein levels was based on the Western blotting results (J). L and M) The indicated cells transfected with KAT8‐targeted siRNAs for 48 h (L) or incubated with 50 µM MG149 for 48 h (M) were treated with or without 10 µM MG132 for 6 h, and then cells were lysed and analyzed by Western blotting. Data are representative of n = 3 independent experiments. Data in G and J are presented as the mean ± SD. P values were analyzed using the two‐tailed Student's t ‐test.
Article Snippet: Cell lines T24, UMUC3, 5637, J82, TCCSUP, SCaBER, SW780, HT1376, RT4, and HEK293T embryonic kidney cells were obtained from the American Type Culture Collection (ATCC), RT112 were obtained from the European Collection of Authenticated Cell Cultures (ECACC), and the BIU87 cell line was obtained from Kunming Cell Bank, Chinese Academy of Sciences.
Techniques: Ubiquitin Proteomics, Labeling, Construct, Western Blot, Co-Immunoprecipitation Assay, Infection, Expressing, Quantitation Assay, Immunoprecipitation, Transfection, Incubation, Two Tailed Test