Drug Targeting Strategies for Photodynamic Therapy

ISSN: 1875-5992 (Online)
ISSN: 1871-5206 (Print)

Volume 16, 12 Issues, 2016

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Anti-Cancer Agents in Medicinal Chemistry

Formerly: Current Medicinal Chemistry - Anti-Cancer Agents

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Michelle Prudhomme
Universite Blaise Pascal - C.N.R.S
Aubiere Cedex

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Drug Targeting Strategies for Photodynamic Therapy

Anti-Cancer Agents in Medicinal Chemistry, 12(5): 500-525.

Author(s): Frederic Schmitt and Lucienne Juillerat-Jeanneret.

Affiliation: Institute of Pathology, University Hospital of Lausanne, CHUV-UNIL Bugnon 25, CH-1011 Lausanne, Switzerland.


In human pathologies, therapeutic treatments are often limited by the lack of selectivity of drugs and their elevated effective concentrations. Targeting these agents to a defined tissue could enhance their selectivity and then diminish their side effects when compared to drugs that accumulate in the entire body. Targeting could also improve treatment efficiency by allowing a localized high concentration of the agents. Based on the different behaviors and patterns of expression between diseased and normal cells, strategies for targeting can be explored. For example, receptors, proteases or trans-membrane carriers could be different or differently expressed. Many therapeutic procedures rely on this fact, including photodynamic therapy (PDT). PDT is already used in the treatment of some cancers, of inflammatory diseases and others diseases such as age-related macular degeneration or acne. PDT relies on the activation of a photosensitizer (PS) by visible light which results in the production of cytotoxic reactive oxygen species. In PDT, the general distribution of PS to the whole body leads to generalized photosensitization and poor acceptance of treatments by patients. One way to avoid these effects is to improve the targeting of PSs to diseased tissues using modification of PS with peptides or proteins that will target specific receptors or enzymes. PSs could also be functionalized with non-proteic ligands such as organometalics to achieve targeted and/or combined therapies. Alternatively, PSs could be encapsulated in nanoparticles bearing targeting agents which will decrease concentration of free circulating PS and improve photodynamic efficiency. These different approaches will be discussed in the present review with an emphasis on the use of peptides and proteins.


Photodynamic Therapy, Drug Targeting, Peptides, Proteins, Nanoparticles, Organometallics, PHOTOSENSITIZERS, NON-PROTEIN LIGANDS, arene-ruthenium, Monoclonal Antibodies.

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Article Details

Volume: 12
Issue Number: 5
First Page: 500
Last Page: 525
Page Count: 26
DOI: 10.2174/187152012800617830
Price: $58

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