title: Mesoporous Silica Nanoparticles Loaded with Cisplatin and Phthalocyanine for Combination Chemotherapy and Photodynamic Therapyin vitro.
abstract: Mesoporous silica nanoparticles (MSNs) have been synthesized and loaded with both aluminum chloride phthalocyanine (AlClPc) and cisplatin as combinatorial therapeutics for treating cancer. The structural and photophysical properties of the MSN materials were characterized by different spectroscopic and microscopic techniques. Intracellular uptake and cytotoxicity were evaluated in human cervical cancer (HeLa) cells by confocal laser scanning microscopy (CLSM) and 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) assays, respectively. The CLSM experiments showed that the MSN materials can be readily internalized in HeLa cells. The cytotoxic experiments demonstrated that, after light exposure, the combination of both AlClPc and cisplatin compounds in the same MSN platform potentiate the toxic effect against HeLa cells in comparison to the control AlClPc-MSN and cisplatin-MSN materials. These results show the potential of using MSN platforms as nanocarriers for combination photodynamic and chemotherapies to treat cancer.
authors.affiliation: Department of Chemistry, University of North Carolina at Charlotte, Charlotte, NC 28223, USA. jviveroe@uncc.edu.|Center for Biomedical Engineering and Science, University of North Carolina at Charlotte, Charlotte, NC 28223, USA. jviveroe@uncc.edu.
authors.forename: Juan L
authors.initials: JL
authors.lastname: Vivero-Escoto
authors.affiliation: Department of Chemistry, University of North Carolina at Charlotte, Charlotte, NC 28223, USA. melnagheeb@gmail.com.
authors.forename: Maram
authors.initials: M
authors.lastname: Elnagheeb
keywords: chemotherapy; cisplatin; fluorescent imaging; mesoporous silica nanoparticles; photodynamic therapy; phototoxicity; phthalocyanine