Resorufin Enters the Photodynamic Therapy Arena: A Monoamine Oxidase Activatable Agent for Selective Cytotoxicity

Date

2020-12-01

Author

Almammadov, Toghrul
Atakan, Gizem
Leylek, Ozen
Ozcan, Gulnihal
Günbaş, Emrullah Görkem
Kolemen, Safacan

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A red-absorbing, water-soluble, and iodinated resorufin derivative (R1) that can be selectively activated with a monoamine oxidase (MAO) enzyme was synthesized, and its potential as a photodynamic therapy (PDT) agent was evaluated. R1 showed high O-1(2) generation yields in aqueous solutions upon addition of MAO isoforms, and it was further tested in cell culture studies. R1 induced photocytotoxicity after being triggered by endogenous MAO enzyme in cancer cells with a much higher efficiency in SH-SYSY neuroblastoma cells with high MAO-A expression. Additionally, R1 displayed differential cytotoxicity between cancer and normal cells, without any considerable dark toxicity. To the best of our knowledge, R1 marks the first example of a resorufin-based photosensitizer (PS) as well as the first anticancer drug that is activated by a MAO enzyme. Remarkably, the target PDT agent was obtained only in three steps as a result of versatile resorufin chemistry.

URI

https://hdl.handle.net/11511/70209

Journal

ACS MEDICINAL CHEMISTRY LETTERS

DOI

https://doi.org/10.1021/acsmedchemlett.0c00484

Collections

Department of Chemistry, Article

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Citation Formats

T. Almammadov, G. Atakan, O. Leylek, G. Ozcan, E. G. Günbaş, and S. Kolemen, “Resorufin Enters the Photodynamic Therapy Arena: A Monoamine Oxidase Activatable Agent for Selective Cytotoxicity,” ACS MEDICINAL CHEMISTRY LETTERS, pp. 2491–2496, 2020, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/70209.