Abstract |
Photodynamic therapy ( PDT) is a palliative therapy and has been used to cure cholangiocarcinoma (CC), which has a poor prognosis and limited available curative therapy. PDT was shown to improve the median survival time of advanced-stage patients. Recently, 5-aminolevulinic acid (ALA) has been used as a pro- photosensitizer, which can be transferred to intercellular protoporphyrin IX ( PpIX), which is a strong photosensitizer, via the heme pathway. The main limitation of using ALA in PDT is the hydrophilic properties of ALA, which results in low cellular uptake. In this study, non-ionic surfactants, pluronic F68 (PF68) and Tween 80 (TW80), were used to address this limitation. The human CC cell line, HuCC-T1, was cotreated with ALA and different concentrations of surfactants for 4h. The effect of surfactants was evaluated by monitoring the uptake of ALA, the fluorescence intensity of PpIX, and the cell survival rate after suitable light irradiation. Cotreatment with the surfactant resulted in an increased intracellular ALA level, PpIX formation, and phototoxicity.
|
Authors | Chung-Wook Chung, Cy Hyun Kim, Kyung Ha Choi, Jin-Ju Yoo, Do Hyung Kim, Kyu-Don Chung, Young-Il Jeong, Dae Hwan Kang |
Journal | European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V
(Eur J Pharm Biopharm)
Vol. 80
Issue 2
Pg. 453-8
(Feb 2012)
ISSN: 1873-3441 [Electronic] Netherlands |
PMID | 22024407
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
|
Copyright | Copyright © 2011 Elsevier B.V. All rights reserved. |
Chemical References |
- Excipients
- Photosensitizing Agents
- Polysorbates
- Protoporphyrins
- Surface-Active Agents
- Poloxamer
- Aminolevulinic Acid
- protoporphyrin IX
|
Topics |
- Aminolevulinic Acid
(administration & dosage, pharmacokinetics, pharmacology)
- Bile Duct Neoplasms
(drug therapy, pathology)
- Bile Ducts, Intrahepatic
(drug effects, pathology)
- Cell Line, Tumor
- Cell Survival
(drug effects)
- Cholangiocarcinoma
(drug therapy, pathology)
- Excipients
(chemistry)
- Humans
- Photochemotherapy
(methods)
- Photosensitizing Agents
(administration & dosage, pharmacokinetics, pharmacology)
- Poloxamer
(chemistry)
- Polysorbates
(chemistry)
- Protoporphyrins
(metabolism)
- Surface-Active Agents
(chemistry)
|