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Phthalocyanine-Biomolecule Conjugated Photosensitizers for Targeted Photodynamic Therapy and Imaging

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Photodynamic therapy (PDT) is now in clinical practice in many European and American countries as a minimally invasive therapeutic technique to treat oncologic malignancies and other nononcologic conditions. Phthalocyanines (Pcs) are gathering importance as effective photosensitizers in targeted PDT and imaging of tumors. The possibility of modification around the Pc macrocycle led the researchers to the synthesis of a diversity of photosensitizers with varied cell specificity, cellular internalization and localization, photodynamic cytotoxicity and excretion. Cellular targeting is the primary aspect of an ideal photosensitizer for targeting PDT. Therefore, Pcs have been structurally modified with a variety of biomolecules capable of recognizing the specific lesions. This review emphasizes the photocytotoxicity and the cellular uptakes of phthalocyanine photosensitizers conjugated with biomolecules including carbohydrates, nucleotides and protein constituents such as amino acids and peptides. In addition, the role of the Pc-biomolecule conjugates in imaging and antimicrobial chemotherapy has been discussed.
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Keywords: Biomolecules; conjugates; imaging; photodynamic therapy; photoimmunotherapy; photosensitizer; phthalocyanine

Document Type: Research Article

Publication date: November 1, 2015

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  • Current Drug Metabolism aims to cover all the latest and outstanding developments in drug metabolism and disposition. The journal serves as an international forum for the publication of timely reviews in drug metabolism. Current Drug Metabolism is an essential journal for academic, clinical, government and pharmaceutical scientists who wish to be kept informed and up-to-date with the latest and most important developments. The journal covers the following areas:

    In vitro systems including CYP-450; enzyme induction and inhibition; drug-drug interactions and enzyme kinetics; pharmacokinetics, toxicokinetics, species scaling and extrapolations; P-glycoprotein and transport carriers; target organ toxicity and interindividual variability; drug metabolism and disposition studies; extrahepatic metabolism; phase I and phase II metabolism; recent developments for the identification of drug metabolites and adducts.
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