Combination therapy with TiO2 nanoparticles and cisplatin enhances chemotherapy response in murine melanoma models
- 30 July 2020
- journal article
- research article
- Published by Springer Science and Business Media LLC in Clinical and Translational Oncology
- Vol. 23 (4), 738-749
- https://doi.org/10.1007/s12094-020-02463-y
Abstract
Background Despite recent progressions in the treatment of melanoma, the response to conventional therapies and the long-term survival in melanoma patients still remain poor. Recently, the use of nanoparticles (NPs) has been highlighted for promoting the chemotherapeutic effects of cytotoxic drugs in melanoma. The aim of this study is to mechanistically evaluate the potential of titanium dioxide (TiO2) nanoparticles (NPs) for enhancing chemotherapy effects in in vitro and in vivo models of murine melanoma. Methods The F10 melanoma cells were exposed to different concentrations of TiO2 NPs and/or cisplatin, then cell growth, cell viability, and cell death were evaluated. In parallel, C57BL/6 syngeneic melanoma mice were treated by TiO2 NPs and/or cisplatin, and then drug responses, tumor size and mice’s organs were studied pathologically. Autophagy was examined by evaluating the formation of autophagosomes and gene expression levels of autophagy markers (ATG5 and ATG6) by fluorescent microscopy and qPCR, respectively. Results Nontoxic concentrations of TiO2 NPs (50 µg/ml) promote anti-proliferative and cytotoxic effects of cisplatin in F10 melanoma cells, which is mediated through the induction of autophagy and necrotic cell death. Whereas TiO2 NPs have no cytotoxic or metastatic effects in melanoma mice, its combination with cisplatin enhances drug responses (up to 50%), leading to higher inhibition of tumor growth compared with each monotherapy. Conclusion The combination of TiO2 NP with cisplatin enhances chemotherapy response in both in vitro and in vivo melanoma models. In addition, autophagy plays an essential role during sensitizing melanoma cells to chemotherapy.Keywords
Funding Information
- Tehran University of Medical Sciences and Health Services (No: 37190-18001-97)
- National Institute of Genetic Engineering and Biotechnology (980301-I-728)
This publication has 38 references indexed in Scilit:
- Cisplatin-Induced Apoptosis Inhibits Autophagy, Which Acts as a Pro-Survival Mechanism in Human Melanoma CellsPLOS ONE, 2013
- Hypoxia-Induced Autophagy Promotes Tumor Cell Survival and Adaptation to Antiangiogenic Treatment in GlioblastomaCancer Research, 2012
- Autophagy and lysosomal dysfunction as emerging mechanisms of nanomaterial toxicityParticle and Fibre Toxicology, 2012
- The Role of Autophagy in Cancer: Therapeutic ImplicationsMolecular Cancer Therapeutics, 2011
- Autophagy-deficient mice develop multiple liver tumorsGenes & Development, 2011
- Autophagy in unicellular eukaryotesPhilosophical Transactions B, 2010
- Effective Treatment of Advanced Human Melanoma Metastasis in Immunodeficient Mice Using Combination Metronomic Chemotherapy RegimensClinical Cancer Research, 2009
- Classification of cell death: recommendations of the Nomenclature Committee on Cell Death 2009Cell Death & Differentiation, 2008
- ERK1/2 inactivation and p38 MAPK-dependent caspase activation during guanosine 5′-triphosphate-mediated terminal erythroid differentiation of K562 cellsThe International Journal of Biochemistry & Cell Biology, 2007
- Autophagy suppresses tumor progression by limiting chromosomal instabilityGenes & Development, 2007