Gallium Phthalocyanine Photosensitizers: Carboxylation Enhances the Cellular Uptake and Improves the Photodynamic Therapy of Cancers

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
France


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Gallium Phthalocyanine Photosensitizers: Carboxylation Enhances the Cellular Uptake and Improves the Photodynamic Therapy of Cancers



Anti-Cancer Agents in Medicinal Chemistry, 12(6): 604-610.

Author(s): Jin F. Zhao, Jing Wang, Ji-Yao Chen, Wadzanai Chidawanykia, Tebello Nyokong, Kazuyuki Ishii and Nagao Kobayashi.

Affiliation: Department of Physics, Fudan University, NO 220 Handan Road, Shanghai 200433, PR China.

Abstract

The octacarboxyl gallium (GaPcC) and metal-free (H2PcC) phthalocyanines were prepared using the carboxyl as the peripheral substituent. The carboxylation improves the intracellular delivery of these two PcCs into KB and QGY cancer cells as compared to that of sulfonated aluminum phthalocyanines (AlPcS), a popularly used photosensitizer (PS). Moreover, GaPcC maintains high photoproduction of singlet oxygen. With a short incubation time of 3 hours, GaPcC accumulates sufficiently in both KB and QGY cells and improves photodynamic therapy (PDT) by effectively killing these cancer cells. AlPcS and H2PcC show much lower PDT effects under the same conditions, because AlPcS have a slow cellular uptake rate resulting in a low cellular amount and the ability of H2PcC to produce 1O2 is low. Carboxylation is a promising way to prepare water-soluble metal phthalocyanines (MPcCs) and facilitates the cellular uptake of MPcCs for PDT improvement.

Keywords:

Phthalocyanine, Cellular uptake, Singlet oxygen, Photodynamic therapy.



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Article Details

Volume: 12
Issue Number: 6
First Page: 604
Last Page: 610
Page Count: 7
DOI: 10.2174/187152012800617740
Price: $58
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