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Álvarez-Acevedo G, Inostroza-Riquelme M, Chornik B, Flores M, Oyarzun-Ampuero F. Encapsulation of Iron Oxide Nanoparticles and Oil-in-Water Nanocarriers in Microgels with Biomedical Potential. J Nanosci Nanotechnol 2019; 19:4938-4945. [PMID: 30913805 DOI: 10.1166/jnn.2019.16789] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Here we report on the design and characterization of calcium-alginate microgels (MGs) containing positively charged iron oxide nanoparticles (IONPs) and negatively charged oil-in-water (O/W) nanocarriers (NCs). To provide ionic compatibility of IONPs with the negatively charged NCs and alginate in MGs, they were coated with the anionic polysaccharides alginate, carrageenan or sulfobutyl-β-cyclodextrin. The mixing of both nanostructures (coated-IONPs and O/W NCs) with alginate solutions provide homogeneous dispersions able to form spherical hydrogels with different sizes (250-1400 micrometers) and encapsulating the nanostructures with high efficiency. MGs loaded with both nanostructures were reactive to continuous (attractive interaction) and alternating magnetic field (heat release similar to non-encapsulated IONPs). The encapsulation of both nanostructures in MGs was maintained even after 7 days of storage at 40 °C. We postulate that the above results will be of interest for the design of hydrogel formulations with therapeutic applications.
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Affiliation(s)
- Gonzalo Álvarez-Acevedo
- Advanced Center for Chronic Diseases (ACCDiS), University of Chile. Santos Dumont 964, 8380494, Independencia, Santiago - Chile
| | - Mariela Inostroza-Riquelme
- Advanced Center for Chronic Diseases (ACCDiS), University of Chile. Santos Dumont 964, 8380494, Independencia, Santiago - Chile
| | - Boris Chornik
- Laboratory of Surfaces and Nanomaterials, Physics Department, Faculty of Physics and Mathematics Sciences, Universidad de Chile, Beauchef 851, 8370456, Santiago - Chile
| | - Marcos Flores
- Laboratory of Surfaces and Nanomaterials, Physics Department, Faculty of Physics and Mathematics Sciences, Universidad de Chile, Beauchef 851, 8370456, Santiago - Chile
| | - Felipe Oyarzun-Ampuero
- Advanced Center for Chronic Diseases (ACCDiS), University of Chile. Santos Dumont 964, 8380494, Independencia, Santiago - Chile
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Guerrero S, Inostroza-Riquelme M, Contreras-Orellana P, Diaz-Garcia V, Lara P, Vivanco-Palma A, Cárdenas A, Miranda V, Robert P, Leyton L, Kogan MJ, Quest AFG, Oyarzun-Ampuero F. Curcumin-loaded nanoemulsion: a new safe and effective formulation to prevent tumor reincidence and metastasis. Nanoscale 2018; 10:22612-22622. [PMID: 30484463 DOI: 10.1039/c8nr06173d] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Curcumin is widely considered beneficial to human health, but insolubility and instability greatly hamper reproducible exploitation of the advantageous traits. Here we report on the development, characterization and evaluation of a curcumin-loaded nanoemulsion (CUR-NEM) that is highly effective in preventing post-surgery tumor reincidence and metastasis. The method of fabrication utilized safe excipients and generated particles of 200 nm (PDI ≤ 0.2) with negative zeta potential (-30 mV) and a high yield of curcumin (95%), which can be converted by lyophilization to a dry powder. In vitro assays showed that CUR-NEM is safe in non-cancerous human cells (HEK-293T) and preferentially cytotoxic in gastric (AGS), colon (HT29-ATCC, HT29-US), breast (MDA-MB-231) and melanoma (B16F10) cells. In addition, in melanoma cells the nanoformulation increases intracellular curcumin accumulation and reactive oxygen species (ROS) formation, while preventing cell-migration and invasion. In vivo studies in C57BL/6 mice demonstrated that a single dose, applied topically to the wounded area after surgical excision of primary tumors formed upon subcutaneous injection of syngeneic B16F10 cells, was sufficient to completely prevent reincident tumor growth and spontaneous lung metastasis, while in untreated animals 70% reincidence and metastasis were observed. In vivo experiments also showed that the fluorescence signal due to curcumin was maintained at least 15 days after topical application of CUR-NEM, while when administered in DMSO the curcumin signal disappeared within 4 days. Importantly, the administration of a dose 22 times larger than that applied topically to animals after tumor surgery did not alter biochemical parameters. Due to the safety and efficacy of the formulation, we envisage it as ideal for topical application in cancer patients following surgery, to prevent tumor reincidence and metastasis. In addition, other routes of administration/protocols could also be proposed to treat/prevent malignant tumors in patients.
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Affiliation(s)
- Simón Guerrero
- Laboratory of Cellular Communication, Program of Cell and Molecular Biology, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Av. Independencia 1027, Santiago 8380453, Chile
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Inostroza-Riquelme M, Vivanco A, Lara P, Guerrero S, Salas-Huenuleo E, Chamorro A, Leyton L, Bolaños K, Araya E, Quest AFG, Kogan MJ, Oyarzun-Ampuero F. Encapsulation of Gold Nanostructures and Oil-in-Water Nanocarriers in Microgels with Biomedical Potential. Molecules 2018; 23:E1208. [PMID: 29783629 PMCID: PMC6099665 DOI: 10.3390/molecules23051208] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 05/13/2018] [Accepted: 05/14/2018] [Indexed: 12/21/2022] Open
Abstract
Here we report the incorporation of gold nanostructures (nanospheres or nanorods, functionalized with carboxylate-end PEG) and curcumin oil-in-water (O/W) nanoemulsions (CurNem) into alginate microgels using the dripping technique. While gold nanostructures are promising nanomaterials for photothermal therapy applications, CurNem possess important pharmacological activities as reported here. In this sense, we evaluated the effect of CurNem on cell viability of both cancerous and non-cancerous cell lines (AGS and HEK293T, respectively), demonstrating preferential toxicity in cancer cells and safety for the non-cancerous cells. After incorporating gold nanostructures and CurNem together into the microgels, microstructures with diameters of 220 and 540 µm were obtained. When stimulating microgels with a laser, the plasmon effect promoted a significant rise in the temperature of the medium; the temperature increase was higher for those containing gold nanorods (11⁻12 °C) than nanospheres (1⁻2 °C). Interestingly, the incorporation of both nanosystems in the microgels maintains the photothermal properties of the gold nanostructures unmodified and retains with high efficiency the curcumin nanocarriers. We conclude that these results will be of interest to design hydrogel formulations with therapeutic applications.
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Affiliation(s)
- Mariela Inostroza-Riquelme
- Advanced Center of Chronic Diseases (ACCDiS), Universidad de Chile. Santos Dumont 964, Independencia, Santiago 8380494, Chile.
- Departamento de Ciencias y Tecnología Farmacéuticas, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santos Dumont 964, Independencia, Santiago 8380494, Chile.
| | - Andrea Vivanco
- Advanced Center of Chronic Diseases (ACCDiS), Universidad de Chile. Santos Dumont 964, Independencia, Santiago 8380494, Chile.
- Departamento de Ciencias y Tecnología Farmacéuticas, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santos Dumont 964, Independencia, Santiago 8380494, Chile.
| | - Pablo Lara
- Advanced Center of Chronic Diseases (ACCDiS), Universidad de Chile. Santos Dumont 964, Independencia, Santiago 8380494, Chile.
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santos Dumont 964, Independencia, Santiago 8380494, Chile.
| | - Simón Guerrero
- Advanced Center of Chronic Diseases (ACCDiS), Universidad de Chile. Santos Dumont 964, Independencia, Santiago 8380494, Chile.
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santos Dumont 964, Independencia, Santiago 8380494, Chile.
- Cellular Communication Laboratory, Programa de Biología Celular y Molecular, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Av. Independencia 1027, Independencia, Santiago 8380453, Chile.
| | - Edison Salas-Huenuleo
- Advanced Center of Chronic Diseases (ACCDiS), Universidad de Chile. Santos Dumont 964, Independencia, Santiago 8380494, Chile.
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santos Dumont 964, Independencia, Santiago 8380494, Chile.
| | - Alejandro Chamorro
- Advanced Center of Chronic Diseases (ACCDiS), Universidad de Chile. Santos Dumont 964, Independencia, Santiago 8380494, Chile.
- Cellular Communication Laboratory, Programa de Biología Celular y Molecular, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Av. Independencia 1027, Independencia, Santiago 8380453, Chile.
- Center for studies on Exercise, Metabolism and Cancer (CEMC), Universidad de Chile, Av. Independencia 1027, Independencia, Santiago 8380453, Chile.
| | - Lisette Leyton
- Advanced Center of Chronic Diseases (ACCDiS), Universidad de Chile. Santos Dumont 964, Independencia, Santiago 8380494, Chile.
- Cellular Communication Laboratory, Programa de Biología Celular y Molecular, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Av. Independencia 1027, Independencia, Santiago 8380453, Chile.
- Center for studies on Exercise, Metabolism and Cancer (CEMC), Universidad de Chile, Av. Independencia 1027, Independencia, Santiago 8380453, Chile.
| | - Karen Bolaños
- Departamento de Ciencias Quimicas, Facultad de Ciencias Exactas, Universidad Andres Bello, Av. Republica 275, Santiago 8370251, Chile.
| | - Eyleen Araya
- Advanced Center of Chronic Diseases (ACCDiS), Universidad de Chile. Santos Dumont 964, Independencia, Santiago 8380494, Chile.
- Departamento de Ciencias Quimicas, Facultad de Ciencias Exactas, Universidad Andres Bello, Av. Republica 275, Santiago 8370251, Chile.
| | - Andrew F G Quest
- Advanced Center of Chronic Diseases (ACCDiS), Universidad de Chile. Santos Dumont 964, Independencia, Santiago 8380494, Chile.
- Cellular Communication Laboratory, Programa de Biología Celular y Molecular, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Av. Independencia 1027, Independencia, Santiago 8380453, Chile.
- Center for studies on Exercise, Metabolism and Cancer (CEMC), Universidad de Chile, Av. Independencia 1027, Independencia, Santiago 8380453, Chile.
| | - Marcelo J Kogan
- Advanced Center of Chronic Diseases (ACCDiS), Universidad de Chile. Santos Dumont 964, Independencia, Santiago 8380494, Chile.
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santos Dumont 964, Independencia, Santiago 8380494, Chile.
| | - Felipe Oyarzun-Ampuero
- Advanced Center of Chronic Diseases (ACCDiS), Universidad de Chile. Santos Dumont 964, Independencia, Santiago 8380494, Chile.
- Departamento de Ciencias y Tecnología Farmacéuticas, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santos Dumont 964, Independencia, Santiago 8380494, Chile.
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