Diblock copolymers to deliver hydrophobic photosensitizers for photodynamic therapy

Buhong Li

doi:10.1117/12.757914

8 January 2008 Diblock copolymers to deliver hydrophobic photosensitizers for photodynamic therapy

Buhong Li

Proceedings Volume 6826, Optics in Health Care and Biomedical Optics III; 68261J (2008) https://doi.org/10.1117/12.757914
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

Polymeric micelles, self-assemblies of block copolymers, are emerging as attractive drug delivery systems for hydrophobic photodynamic sensitizers. Recent advances in the formulation of photosensitizers for photodynamic therapy (PDT) with diblock copolymers are presented. This paper reviews the main characteristics of existing drug-loading micelles with diblock copolymers, including loading efficiency, particle size and morphology, stability, cellular uptake, subcellular distribution and therapeutic efficiency. The results indicate that diblock polymeric micelles are potentially useful for the delivery and release of hydrophobic photosensitizers in PDT. While significant progress has been achieved, many challenges remain in elucidating the detailed internalization mechanisms of the micelles and resulting mechanisms for enhanced photocytotoxicity. Some critical issues for diblock copolymers to deliver hydrophobic photosensitizers for PDT are highlighted.

Citation Download Citation

Buhong Li "Diblock copolymers to deliver hydrophobic photosensitizers for photodynamic therapy", Proc. SPIE 6826, Optics in Health Care and Biomedical Optics III, 68261J (8 January 2008); https://doi.org/10.1117/12.757914

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