Aluminium (III) phthalocyanine chloride tetrasulphonate is an effective photosensitizer for the eradication of lung cancer stem cells.
Anine CrousAbrahamse HeidiPublished in: Royal Society open science (2021)
Cancer stem cells (CSCs) are considered to contribute to the recurrence of lung cancer due to their stem-like nature and the involvement of genetic markers associated with drug efflux, regeneration and metastases. Photodynamic therapy (PDT) is a cost-effective and non-invasive therapeutic application that can act as an alternative therapy for lung cancer when considering CSC involvement. Stem-like cells derived from the A549 lung cancer cell line, positive for CD133, CD56 and CD44 antigen markers, were characterized, intracellular localization of aluminium (III) phthalocyanine chloride tetrasulphonate (AlPcS4Cl) determined and its anti-cancer PDT effects were evaluated. Results confirmed that isolated cells were stem cell-like and subcellular localization of AlPcS4Cl in integral organelles involved in cell homeostasis supported the destruction of CSC. AlPcS4Cl's effectivity was demonstrated with CSC eradication showing a significant increase in cytotoxicity and cell death via apoptosis, caused by a decrease in mitochondrial membrane potential. PDT could serve as a palliative treatment for lung cancer and improve prognosis by elimination of lung CSCs.
Keyphrases
- photodynamic therapy
- cancer stem cells
- cell death
- cell cycle arrest
- stem cells
- fluorescence imaging
- oxidative stress
- induced apoptosis
- endoplasmic reticulum stress
- helicobacter pylori infection
- single cell
- emergency department
- cell therapy
- mesenchymal stem cells
- genome wide
- gene expression
- signaling pathway
- risk assessment
- reactive oxygen species
- drug induced
- smoking cessation