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2014•Journal of Nanoscience and NanotechnologyRequires access

Effect of 5-Aminolevulinic Acid-Encapsulate Liposomes on Photodynamic Therapy in Human Cholangiocarcinoma Cells

Kyung Ha Choi, Chung‐Wook Chung, Cy Hyun Kim, Do Hyung Kim, Young‐Il Jeong, Dae Hwan Kang

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Abstract

Intracellular protoporphyrin IX (PpIX) generation following administration of 5-aminolevulinic acid (ALA) has been used in photodynamic therapy (PDT). Subsequent irradiation can lead to selective damage to photosensitizer-treated cells or tissues. In the present work, we describe the enhancement of ALA-induced PpIX accumulation using a liposome carrier. ALA-containing liposomes (Lipo-ALA) were prepared using dipalmitoyl-phosphatidyl choline and in vitro PDT effect was investigated against human cholangiocarcinoma HuCC-T1 cells. Lipo-ALA increased the uptake efficiency into tumor cells compared to ALA itself, which increased the phototoxic effect. A positive relationship was evident between small particle size, PpIX accumulation and cell death after Lipo-ALA based PDT.

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What this paper is about

Intracellular protoporphyrin IX (PpIX) generation following administration of 5-aminolevulinic acid (ALA) has been used in photodynamic therapy (PDT). Subsequent irradiation can lead to selective damage to photosensitizer-treated cells or tissues. In the present work, we describe the enhancement of ALA-induced PpIX accumulation using a liposome carrier. ALA-containing liposomes (Lipo-ALA) were prepared using dipalmitoyl-phosphatidyl choline and in vitro PDT effect was investigated against human cholangiocarcinoma HuCC-T1 cells. Lipo-ALA increased the uptake efficiency into tumor cells compared to ALA itself, which increased the phototoxic effect. A positive relationship was evident between small particle size, PpIX accumulation and cell death after Lipo-ALA based PDT.

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Available abstract

Intracellular protoporphyrin IX (PpIX) generation following administration of 5-aminolevulinic acid (ALA) has been used in photodynamic therapy (PDT). Subsequent irradiation can lead to selective damage to photosensitizer-treated cells or tissues. In the present work, we describe the enhancement of ALA-induced PpIX accumulation using a liposome carrier. ALA-containing liposomes (Lipo-ALA) were prepared using dipalmitoyl-phosphatidyl choline and in vitro PDT effect was investigated against human cholangiocarcinoma HuCC-T1 cells. Lipo-ALA increased the uptake efficiency into tumor cells compared to ALA itself, which increased the phototoxic effect. A positive relationship was evident between small particle size, PpIX accumulation and cell death after Lipo-ALA based PDT.

Key concepts: Photodynamic therapy, Photosensitizer, Protoporphyrin IX, Liposome, Phototoxicity, Protoporphyrin, In vitro, Intracellular

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Effect of 5-Aminolevulinic Acid-Encapsulate Liposomes on Photodynamic Therapy in Human Cholangiocarcinoma Cells — Research Paper | ScholarLens