Stimuli‐responsive Supra‐biomolecular Nanoassemblies of Cucurbit[7]uril with Bovine Serum Albumin: Drug Delivery and Sensor Applications
2018
Construction and characterization of stimuli-responsive supra-biomolecular nanoassembly between cucurbit[7]uril (CB7) and bovine serum albumin (BSA), uptake and release of doxorubicin (DOX) in live cells, the enhanced sensitivity of brilliant green (BG) and the metal ion-induced relocation of neutral red (NR) dye to BSA have been discussed in this review. The fluorescence intensity of DOX is largely quenched in the presence of nanoassembly which recovers with adamantylamine or by changing the pH of the solution, indicating the significant uptake and release of DOX. Whereas, the interaction of BG with CB7-BSA assembly leads to a huge fluorescence enhancement ∼350-fold through ternary complex formation. In another study, the supramolecular pKa tuning of nanoassembly encapsulated NR dye with metal ion and the consequent relocation of NR from CB7 cavity to the hydrophobic pocket of BSA have been demonstrated. All these studies show promising applications in drug delivery and on-off sensor.
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