Journal: The Journal of Biological Chemistry
Article Title: Nucleolar protein DCAF13 promotes non–small cell lung cancer cell proliferation via facilitating rDNA transcription and ribosome biogenesis
doi: 10.1016/j.jbc.2025.110656
Figure Lengend Snippet: DCAF13 promotes non–small cell lung cancer progression. A , DCAF13 mRNA expression level by UALCAN. B , association between DCAF13 mRNA expression and prognosis in TCGA LUAD samples by Kaplan–Meier analysis (log-rank test). C , association between DCAF13 mRNA expression and pathologic staging. D , western blot results showing the DCAF13 expression level in NSCLC adjacent paraneoplastic tissues (NT) and tumor tissues (T). E , expression levels of DCAF13 in lung cancer cell lines (A549, NCI-H358, CALU-1, and H1299) and normal pulmonary bronchial epithelial cell (BEAS-2B) were evaluated by western blot. F , deletion of DCAF13 was confirmed at the protein level in different clones of H1299 and A549 cells by immunoblotting. G , growth curve assay for D CAF13 deletion H1299 and A549 cells. Cells (100,000) were plated in six-well culture dishes and cells were counted on days 1, 2, and 3. The data (N = 3 per cell line) are plotted as mean ± SEM. ∗∗∗ p < 0.001, unpaired t test. H , DCAF13 deletion inhibits colony formation in H1299 and A549 cells. Data are presented as mean ± SEM for N = 3 per cell line. ∗∗∗ p < 0.001. I , wound healing assay was performed for evaluating the migration ability of DCAF13 deletion H1299 and A549 cells. J , the expression of several key cell metastatic signal regulators, vimentin, MMP-9, E-cadherin, slug, snail, N-cadherin, and CCT8 were examined by qPCR. ∗∗∗ p < 0.001, unpaired t test. K , Transwell migration assay with the 24-well transwell system and quantitative analysis (original magnification: × 100). L , the numbers of migrated cells were counted in five representative high-power fields per transwell plate, ∗∗ p < 0.01. DCAF13, DDB1- and CUL4-associated factor 13; LUAD, lung adenocarcinoma; NSCLC, non–small cell lung cancer; qPCR, quantitative real-time PCR.
Article Snippet: Human NSCLC cell lines (A549, H1299, Calu-1, and NCI-H358), normal pulmonary bronchial epithelial cells (BEAS-2B), and human embryonic kidney cells (293T) were purchased from the American Type Culture Collection.
Techniques: Expressing, Western Blot, Clone Assay, Wound Healing Assay, Migration, Transwell Migration Assay, Real-time Polymerase Chain Reaction