Mitochondria, endoplasmic reticulum and actin filament behavior after PDT with chloroaluminum phthalocyanine liposomal in HeLa cells.
Cell Biol Int
; 32(8): 1024-8, 2008 Aug.
Article
de En
| MEDLINE
| ID: mdl-18485750
ABSTRACT
Photodynamic therapy (PDT) for cancer is a therapeutic modality in the treatment of tumors in which visible light is used to activate a photosensitizer. Cell membranes have been identified as an important intracellular target for singlet oxygen produced during the photochemical pathway. This study analyzed the cytotoxicity in specific cellular targets of a photosensitizer used in PDT in vitro. The photosensitizing effects of chloroaluminum phthalocyanine liposomal were studied on the mitochondria, cytoskeleton and endoplasmic reticulum of HeLa cells. Cells were irradiated with a diode laser working at 670 nm, energy density of 4.5 J/cm2 and power density of 45 mW/cm2. Fluorescence microscopic analysis of the mitochondria showed changes in membrane potential. After PDT treatment, the cytoskeleton and endoplasmic reticulum presented basic alterations in distribution. The combined effect of AlPHCl liposomal and red light in the HeLa cell line induced photodamage to the mitochondria, endoplasmic reticulum and actin filaments in the cytoskeleton.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Composés organométalliques
/
Photothérapie dynamique
/
Cytosquelette d'actine
/
Réticulum endoplasmique
/
Potentiel de membrane mitochondriale
/
Indoles
/
Mitochondries
Limites:
Humans
Langue:
En
Journal:
Cell Biol Int
Année:
2008
Type de document:
Article
Pays d'affiliation:
Brésil