CHLORIN E6 (cas 19660-77-6) decorated doxorubicin encapsulated chitosan nanoparticles for photo-controlled cancer drug delivery
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Add time:09/02/2019 Source:sciencedirect.com
In the study we have reported the physico-chemical, photophysical and morphological properties of CHLORIN E6 (cas 19660-77-6) (Ce6) decorated doxorubicin (DOX) encapsulated chitosan (CS)-tripolyphosphate (TPP) nanoparticles which prepared by ionotropic gelation method. The Ce6 physically loaded onto the nanoparticles by self-assembly of CS with TPP-DOX under aqueous conditions. The results from DLS studies highlights the prepared nanoparticles that possess the size in the range of 80–120 nm. with negatively charged of −6 mV. The SEM and AFM images showed 80–120 nm size while the average size of the Ce6 decorated nanoparticles was found to be around 100–130 nm. The absorption spectra of Ce6 decorated nanoparticles are similar when compared to free Ce6 which suggest there is no change in the Ce6 chromophore upon decoration. This nanoparticle showed high photostability and singlet oxygen generation (SOG). The Ce6 decorated and DOX encapsulated nanoparticles sizes and charges are in the range of 90–130 nm and −30 mV respectively. The nanoparticles showed high encapsulation efficiency towards DOX as well as pH controlled release. This has significant anti-proliferative activity against MCF-7 breast cancer cells after irradiation at near infra-red (NIR) ranges were evaluated. This could have potential applications in photo-controlled smart DOX delivery system for cancer treatment.
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