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Image Search Results
Journal: Pharmaceutical Biology
Article Title: Low, plasma level‑informed native curcumin concentrations fail to induce cell death in human lung and colorectal cancer cells
doi: 10.1080/13880209.2026.2640678
Figure Lengend Snippet: Procaspase 3 levels indicate lack of curcumin-induced apoptosis at the low, plasma level-informed curcumin concentration. (A) A549, H460, Caco-2, and HT29 cells treated with control, curcumin (4–50 µg/mL) for 24h, or staurosporine (2 µM, positive control) for 4h. Cells were washed with PBS, lysed, and processed for Western blotting as described in Materials and Methods. Each lane was loaded with 40 µg of total protein. Membranes were probed with primary antibodies against caspase 3 and either β-actin or tubulin (loading control), followed by IRDye 680 and 800-conjugated secondary antibodies. Blots were imaged using the ChemiDoc ™ platform. (B) Quantification of procaspase 3 band intensity was normalized to β-actin and expressed relative to the control for each cell line. Dot plots represent individual values from 3 biological replicates per cell line, with additional technical replicates included for A549 and HT29 (total n = 7), and for H460 and Caco-2 (total n = 4). Horizontal lines indicate the group mean and error bars represent standard deviation. Statistical analysis was performed using one-way ANOVA followed by Dunnett’s post hoc test. *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001; ns = not significant. β-actin (ab8226) was used as the primary loading control following discontinuation of the tubulin antibody (ab59680); earlier tubulin-normalized blots are presented in the Supplementary Material .
Article Snippet: Complete Mini Protease Inhibitor Cocktail Tablet was obtained from Roche; the BCA Protein Assay Kit from Thermo Fisher Scientific; 4–20% SDS-PAGE Gels from Bio-Rad; PVDF membranes from Merck; and Intercept TM (
Techniques: Clinical Proteomics, Concentration Assay, Control, Positive Control, Western Blot, Standard Deviation