Jun 2, 2020

Photodynamic therapy of hepatocellular carcinoma using tetra-triethyleneoxysulfonyl zinc phthalocyanine as photosensitizer

Journal of Photochemistry and Photobiology. B, Biology
Racheal O OgboduMichael Höpfner


The palliative treatment options for advanced hepatocellular carcinoma (HCC) are currently not satisfying. The use of photodynamic therapy (PDT) has gained much attention in the treatment of several cancers and has been approved as an alternative approach in treating different forms of cancers. We investigated for the first time the PDT effects of tetra-triethyleneoxysulfonyl zinc phthalocyanine (ZnPc) on HCC cells. Photoactivation of ZnPc loaded HCC cells resulted in a dose- and time- dependent growth inhibitory effect, the production of reactive oxygen species (ROS), induced cytotoxic effects and the induction of apoptosis in the investigated HCC cells (HepG2 and Huh-7). ZnPc-PDT inhibited the proliferation of HCC cells by up to 90% accompanied by a down-regulation of the activity and expression of the proliferation relevant mitogen-activated protein kinase (MAPK)-protein extracellular signal-regulated (ERK ½). Moreover, an up-regulation of proapoptotic BAX and a down-regulation of antiapoptotic B-cell lymphoma 2 (Bcl-2) expressions were observed with both proteins implicated in mitochondria-driven apoptosis. The investigation of the anti-tumor effect of ZnPc-PDT in vivo using the chicken chorioallantoic membrane assays (CAM)...Continue Reading

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Mentioned in this Paper

Cell Proliferation
Treatment Options
Malignant Neoplasms
Mitogen-Activated Protein Kinases
Hep G2 Cells
TXNDC5 gene
Protein Expression
Cd81 protein, rat

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