Co-delivery of Docetaxel and Disulfonate Tetraphenyl Chlorin in One Nanoparticle Produces Strong Synergism between Chemo- and Photodynamic Therapy in Drug-Sensitive and -Resistant Cancer Cells
| Autor: | Claudia Conte, Diletta Esposito, Francesca Moret, Elena Reddi, Elisa Gaio, Fabiana Quaglia, Giovanni Miotto |
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| Přispěvatelé: | Gaio, E, Conte, C, Esposito, D, Miotto, G, Quaglia, F, Moret, F, Reddi, E. |
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Drug Combination therapy Cell Survival medicine.medical_treatment media_common.quotation_subject Pharmaceutical Science Antineoplastic Agents Photodynamic therapy Drug resistance combination therapy disulfonate tetraphenyl chlorin 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Cell Line Tumor Drug Discovery medicine Humans docetaxel Drug Interactions Photosensitizer Hyaluronic Acid media_common Drug Carriers Photosensitizing Agents nanoparticle Drug Discovery3003 Pharmaceutical Science 030104 developmental biology Photochemotherapy photodynamic therapy Docetaxel chemistry combination index 030220 oncology & carcinogenesis nanoparticles Cancer cell Chlorin Cancer research Nanoparticles Molecular Medicine medicine.drug |
| Zdroj: | Molecular Pharmaceutics. 15:4599-4611 |
| ISSN: | 1543-8392 1543-8384 |
| DOI: | 10.1021/acs.molpharmaceut.8b00597 |
| Popis: | Cancer therapies based on the combinations of different drugs and/or treatment modalities are emerging as important strategies for increasing efficacy and cure, decreasing unwanted toxicity, and overcoming drug resistance, provided that optimized drug concentration ratios are delivered into the target tissue. To these purposes, delivery systems such as nanoparticles (NPs) offer the unique opportunity to finely tune the drug loading and the release rate of drug combinations in the target tissues. Here, we propose double-layered polymeric NPs for the delivery of the chemotherapeutic docetaxel (DTX) and the photosensitizer disulfonate tetraphenyl chlorin (TPCS2a) coated with hyaluronic acid (HA), which allows cell targeting via CD44 receptors. The simultaneous delivery of the two drugs aims at killing DTX-sensitive (HeLa-P, MDA-MB-231) and DTX-resistant (HeLa-R) cancer cells by combining chemotherapy and photodynamic therapy (PDT). Using the Chou and Talalay method that analyses drug interactions and calculates combination index (CI) using the median-effect principle, we compared the efficiency of DTX chemotherapy combined with TPCS2a-PDT for drugs delivered in the standard solvents, coloaded in the same NP (DTX/TPCS2a-NP) or loaded in separate NPs (DTX-NPs + TPCS2a-NPs). Along with the drug interaction studies, we gained insight into cell death mechanisms after combo-therapy and into the extent of TPCS2a intracellular uptake and localization. In all cell lines considered, the analysis of the viability data revealed synergistic drug/treatment interaction especially when DTX and TPCS2a were delivered to cells coloaded in the same NPs despite the reduced PS uptake measured in the presence of the delivery systems. In fact, while the combinations of the free drugs or drugs in separate NPs gave slight synergism (CI < 1) only at doses killing more than 50% of the cells, the combination of drugs in one NPs gave high synergism also at doses killing 10-20% of the cells. Furthermore, the DTX dose in the combination DTX/TPCS2a-NPs could be reduced by ∼2.6- and 10.7-fold in HeLa-P and MDA-MB-231, respectively. Importantly, drug codelivery in NPs was very efficient in inducing cell mortality also in DTX resistant HeLa-R cells overexpressing P-glycoprotein 1 in which the dose of the chemotherapeutic can be reduced by more than 100 times using DTX/TPCS2a-NPs. Overall, our data demonstrate that the protocol for the preparation of HA-targeted double layer polymeric NPs allows to control the concentration ratio of coloaded drugs and the delivery of the transported drugs for obtaining a highly synergistic interaction combining DTX-chemotherapy and TPCS2a-PDT. |
| Databáze: | OpenAIRE |
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