Journal: Nanoscale Advances
Article Title: Simultaneous activation and release of a microtubule inhibitor from amphiphilic polymeric nanoparticles
doi: 10.1039/d6na00763e
Figure Lengend Snippet: (a) Schematic representation of light-controlled inhibition of microtubule polymerisation by proPST-1-loaded polymer nanoparticles (proPST-1@PN). Under dark conditions, the encapsulated photocaged prodrug remains inactive, allowing normal microtubule formation. Upon 365 nm irradiation, photolytic uncaging and release of active cis -PST-1 suppress microtubule assembly. Created in BioRender. Singh, H. (2026) https://BioRender.com/fac5r0eT . (b) Tubulin polymerisation kinetics monitored by absorbance at 340 nm for control samples, empty polymer nanoparticles (PN control), and proPST-1@PN under dark and irradiated conditions. Irradiation of proPST-1@PN results in pronounced inhibition of tubulin polymerisation, whereas no inhibition is observed in the dark. (c) Fluorescence microscopy images of microtubule structures formed in the presence of control samples, proPST-1@PN under dark conditions, and irradiated proPST-1@PN. Normal microtubule growth and network formation are observed in control and dark conditions, while irradiation results in substantial disruption of microtubule assembly. Scale bars: 10 µm.
Article Snippet: Tubulin MAP-rich (porcine brain) (Cat. #ML116), Tubulin protein (fluorescent HiLyte 488): porcine brain (Cat. #TL488M), General tubulin buffer (Cat. #BST01), Tubulin glycerol buffer (Cat. #BST05) and Taxol (Cat. #TXD01) and GTP (Cat. #BTS06) were obtained from Cytoskeleton, Inc and used as per the instruction manual.
Techniques: Inhibition, Polymer, Irradiation, Control, Fluorescence, Microscopy, Disruption