Journal: ACS Applied Materials & Interfaces
Article Title: Site-Specific Abiraterone Protein–Drug Conjugates via Hedgehog Autoprocessing
doi: 10.1021/acsami.5c22490
Figure Lengend Snippet: Biophysical and biological assessment of the optimized PDC and controls. (a) Hydrodynamic radius ( R h ) of (A,40) carrier (E), E–Abi and E–Chol at 50 μM and 200 μM, measured by dynamic light scattering. E–Abi forms reversible, concentration-dependent oligomers. (b) Release kinetics of conjugated sterols (E-Abi, E–Andro and E–Chol) in PBS (pH 6.5) at 37 °C, along with the chemical structures of Abi and Andro tail groups. E–Abi and E–Andro shows sustained release, whereas E–Chol displays negligible sterol release over the same period. Shaded areas represent the 95% confidence intervals of the nonlinear regression fit to a first-order kinetics model. (c) Dose–response curves for DU145 prostate cancer cells after 72 h exposure to free drug, conjugate, and controls (measured by MTT assay; nonlinear dose–response fit). (d) Viability of 3D DU145 spheroids after 24-h treatment with 100 μM of each compound, showing superior efficiency of E–Abi. (e) Representative live/dead fluorescence images of treated spheroids. Live cells are stained green (calcein AM), and dead cells are stained red (propidium iodide). Data are mean ± s.d. ( n = 3). Statistical analysis was performed using one-way ANOVA with posthoc tests (Tukey’s for a, Holm–Sidak’s for d): * p < 0.05, ** p < 0.01, *** p < 0.001 and **** p < 0.0001.
Article Snippet: DU145 human prostate cancer cells (ATCC HTB-81) were cultured in high-glucose DMEM supplemented with 10% fetal bovine serum and 0.1% penicillin–streptomycin at 37 °C in a humidified 5% CO 2 atmosphere.
Techniques: Concentration Assay, MTT Assay, Fluorescence, Staining