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de Oliveira JV, Oliveira da Rocha MC, de Sousa-Junior AA, Rodrigues MC, Farias GR, da Silva PB, Bao SN, Bakuzis AF, Azevedo RB, Morais PC, Muehlmann LA, Figueiró Longo JP. Tumor vascular heterogeneity and the impact of subtumoral nanoemulsion biodistribution. Nanomedicine (Lond) 2022; 17:2073-2088. [PMID: 36853205 DOI: 10.2217/nnm-2022-0176] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023] Open
Abstract
Aim: Investigate the heterogeneous tumor tissue organization and examine how this condition can interfere with the passive delivery of a lipid nanoemulsion in two breast cancer preclinical models (4T1 and Ehrlich). Materials & methods: The authors used in vivo image techniques to follow the nanoemulsion biodistribution and microtomography, as well as traditional histopathology and electron microscopy to evaluate the tumor structural characteristics. Results & conclusion: Lipid nanoemulsion was delivered to the tumor, vascular organization depends upon the subtumoral localization and this heterogeneous organization promotes a nanoemulsion biodistribution to the highly vascular peripherical region. Also, the results are presented with a comprehensive mathematical model, describing the differential biodistribution in two different breast cancer models, the 4T1 and Ehrlich models.
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Affiliation(s)
| | | | | | - Mosar Corrêa Rodrigues
- Institute of Biological Sciences, University of Brasília, Brasília, DF, 70910-900, Brazil
| | - Gabriel Ribeiro Farias
- Institute of Biological Sciences, University of Brasília, Brasília, DF, 70910-900, Brazil
| | | | - Sônia Nair Bao
- Institute of Biological Sciences, University of Brasília, Brasília, DF, 70910-900, Brazil
| | | | - Ricardo Bentes Azevedo
- Institute of Biological Sciences, University of Brasília, Brasília, DF, 70910-900, Brazil
| | - Paulo César Morais
- Institute of Physics, University of Brasília, Brasília, DF, 70910-900, Brazil
- Biotechnology & Genomic Sciences, Catholic University of Brasília, Brasília, DF, 70790-160, Brazil
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da Rocha MCO, da Silva PB, Radicchi MA, Andrade BYG, de Oliveira JV, Venus T, Merker C, Estrela-Lopis I, Longo JPF, Báo SN. Docetaxel-loaded solid lipid nanoparticles prevent tumor growth and lung metastasis of 4T1 murine mammary carcinoma cells. J Nanobiotechnology 2020; 18:43. [PMID: 32164731 PMCID: PMC7068958 DOI: 10.1186/s12951-020-00604-7] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 03/06/2020] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Metastasis causes the most breast cancer-related deaths in women. Here, we investigated the antitumor effect of solid lipid nanoparticles (SLN-DTX) when used in the treatment of metastatic breast tumors using 4T1-bearing BALB/c mice. RESULTS Solid lipid nanoparticles (SLNs) were produced using the high-energy method. Compritol 888 ATO was selected as the lipid matrix, and Pluronic F127 and Span 80 as the surfactants to stabilize nanoparticle dispersion. The particles had high stability for at least 120 days. The SLNs' dispersion size was 128 nm, their polydispersity index (PDI) was 0.2, and they showed a negative zeta potential. SLNs had high docetaxel (DTX) entrapment efficiency (86%), 2% of drug loading and showed a controlled drug-release profile. The half-maximal inhibitory concentration (IC50) of SLN-DTX against 4T1 cells was more than 100 times lower than that of free DTX after 24 h treatment. In the cellular uptake test, SLN-DTX was taken into the cells significantly more than free DTX. The accumulation in the G2-M phase was significantly higher in cells treated with SLN-DTX (73.7%) than in cells treated with free DTX (23.0%), which induced subsequent apoptosis. TEM analysis revealed that SLN-DTX internalization is mediated by endocytosis, and fluorescence microscopy showed DTX induced microtubule damage. In vivo studies showed that SLN-DTX compared to free docetaxel exhibited higher antitumor efficacy by reducing tumor volume (p < 0.0001) and also prevented spontaneous lung metastasis in 4T1 tumor-bearing mice. Histological studies of lungs confirmed that treatment with SLN-DTX was able to prevent tumor. IL-6 serum levels, ki-67 and BCL-2 expression were analyzed and showed a remarkably strong reduction when used in a combined treatment. CONCLUSIONS These results indicate that DTX-loaded SLNs may be a promising carrier to treat breast cancer and in metastasis prevention.
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Affiliation(s)
| | - Patrícia Bento da Silva
- Nanobiotechnology Laboratory, Institute of Biological Sciences, University of Brasilia, Brasília, Brazil
| | - Marina Arantes Radicchi
- Electron Microscopy Laboratory, Institute of Biological Sciences, University of Brasilia, Brasília, Brazil
| | | | - Jaqueline Vaz de Oliveira
- Nanobiotechnology Laboratory, Institute of Biological Sciences, University of Brasilia, Brasília, Brazil
| | - Tom Venus
- Institute of Medical Physics & Biophysics, Leipzig University, Leipzig, Germany
| | - Carolin Merker
- Institute of Medical Physics & Biophysics, Leipzig University, Leipzig, Germany
| | - Irina Estrela-Lopis
- Institute of Medical Physics & Biophysics, Leipzig University, Leipzig, Germany
| | - João Paulo Figueiró Longo
- Nanobiotechnology Laboratory, Institute of Biological Sciences, University of Brasilia, Brasília, Brazil
| | - Sônia Nair Báo
- Electron Microscopy Laboratory, Institute of Biological Sciences, University of Brasilia, Brasília, Brazil.
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Radicchi MA, de Oliveira JV, Mendes ACP, de Oliveira DM, Muehlmann LA, Morais PC, Azevedo RB, Longo JPF. Lipid nanoemulsion passive tumor accumulation dependence on tumor stage and anatomical location: a new mathematical model for in vivo imaging biodistribution studies. J Mater Chem B 2018; 6:7306-7316. [DOI: 10.1039/c8tb01577e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nanoparticle delivery to tumor tissue is one of the most important applications of nanomedicine.
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Affiliation(s)
- Marina Arantes Radicchi
- Department of Genetics and Morphology
- Institute of Biological Science
- University of Brasilia
- Brasília DF 70910-900
- Brazil
| | - Jaqueline Vaz de Oliveira
- Department of Genetics and Morphology
- Institute of Biological Science
- University of Brasilia
- Brasília DF 70910-900
- Brazil
| | - Ana Clara Pova Mendes
- Department of Genetics and Morphology
- Institute of Biological Science
- University of Brasilia
- Brasília DF 70910-900
- Brazil
| | - Daniela Mara de Oliveira
- Department of Genetics and Morphology
- Institute of Biological Science
- University of Brasilia
- Brasília DF 70910-900
- Brazil
| | | | - Paulo Cesar Morais
- Institute of Physics
- University of Brasilia
- Brasília DF 70910-900
- Brazil
- School of Chemistry and Chemical Engineering
| | - Ricardo Bentes Azevedo
- Department of Genetics and Morphology
- Institute of Biological Science
- University of Brasilia
- Brasília DF 70910-900
- Brazil
| | - João Paulo Figueiró Longo
- Department of Genetics and Morphology
- Institute of Biological Science
- University of Brasilia
- Brasília DF 70910-900
- Brazil
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