Effectiveness of nanoencapsulated methotrexate against osteosarcoma cells: in vitro cytotoxicity under dynamic conditions
| Autor: | Edurne Imbuluzqueta, Oihane Mitxelena-Iribarren, Yolanda González-Fernández, Maite Mujika, M. Errazquin-Irigoyen, Colin L. Hisey, María J. Blanco-Prieto, Sergio Arana |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
medicine.medical_treatment Cell Population Biomedical Engineering Nanoparticle Antineoplastic Agents Capsules 02 engineering and technology Targeted therapy 03 medical and health sciences 0302 clinical medicine Cell Line Tumor Lab-On-A-Chip Devices medicine Humans education Molecular Biology Drug Carriers Osteosarcoma education.field_of_study Cancer 021001 nanoscience & nanotechnology medicine.disease Lipids Nanostructures Methotrexate medicine.anatomical_structure 030220 oncology & carcinogenesis Drug delivery 0210 nano-technology medicine.drug Biomedical engineering |
| Zdroj: | Biomedical Microdevices. 19 |
| ISSN: | 1572-8781 1387-2176 |
| Popis: | Cancer is a leading cause of mortality in the world, with osteosarcoma being one of the most common types among children between 1 and 14 years old. Current treatments including preoperative chemotherapy, surgery and postoperative chemotherapy produce several side effects with limited effectiveness. The use of lipid nanoparticles as biodegradable shells for controlled drug delivery shows promise as a more effective and targeted tumor treatment. However, in vitro validation of these vehicles is limited due to fluid stagnation in current techniques, in which nanoparticles sediment onto the bottom of the wells killing the cells by asphyxiation. In the current series of experiments, results obtained with methotrexate-lipid nanoparticles under dynamic assay conditions are presented as a promising alternative to current free drug based therapies. Effects on the viability of the U-2 OS osteosarcoma cell line of recirculation of cell media, free methotrexate and blank and methotrexate containing lipid nanoparticles in a 11 μM concentration were successfully assessed. In addition, several designs for the microfluidic platform used were simulated using COMSOL-Multiphysics, optimized devices were fabricated using soft-lithography and simulated parameters were experimentally validated. Nanoparticles did not sediment to the bottom of the platform, demonstrating the effectiveness of the proposed system. Moreover, encapsulated methotrexate was the most effective treatment, as after 72 h the cell population was reduced nearly 40% while under free methotrexate circulation the cell population doubled. Overall, these results indicate that methotrexate-lipid nanoparticles are a promising targeted therapy for osteosarcoma treatment. |
| Databáze: | OpenAIRE |
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