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Lima Salviano T, Dos Santos Macedo DC, de Siqueira Ferraz Carvalho R, Pereira MA, de Arruda Barbosa VS, Dos Santos Aguiar J, Souto FO, Carvalho da Silva MDP, Lapa Montenegro Pimentel LM, Correia de Sousa LDÂ, Costa Silva BS, da Silva TG, da Silva Góes AJ, Santos Magalhães NS, Cajubá de Britto Lira Nogueira M. Fucoidan-Coated Liposomes: A Target System to Deliver the Antimicrobial Drug Usnic Acid to Macrophages Infected with Mycobacterium tuberculosis. J Biomed Nanotechnol 2021; 17:1699-1710. [PMID: 34544546 DOI: 10.1166/jbn.2021.3139] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The present study describes the use of fucoidan, a negative sulfated polysaccharide, as a coating material for the development of liposomes targeted to macrophages infected with Mycobacterium tuberculosis. First, fucoidan was chemically modified to obtain a hydrophobized-fucoidan derivative (cholesteryl-fucoidan) using a two-step microwave-assisted (μW) method. The total reaction time was decreased from 14 hours to 1 hour while maintaining the overall yield. Cholesterylfucoidan was then used to prepare surface-modified liposomes containing usnic acid (UA-LipoFuc), an antimicrobial lichen derivative. UA-LipoFuc was evaluated for mean particle size, polydispersity index (PDI), surface charge (ζ), and UA encapsulation efficiency. In addition, a cytotoxicity study, competition assay and an evaluation of antimycobacterial activity against macrophages infected with M. tuberculosis (H37Ra) were performed. When the amount of fucoidan was increased (from 5 to 20 mg), vesicle size increased (from 168 ± 2.82 nm to 1.18 ± 0.01 μm). Changes in from +20 ± 0.41 mV for uncoated liposomes to -5.41 ± 0.23 mV for UA-LipoFuc suggested that the fucoidan was placed on the surface of the liposomes. UA-LipoFuc exhibited a lower IC50 (8.26 ± 1.11 μM) than uncoated liposomes (18.37 ± 3.34 μM), probably due to its higher uptake. UA-LipoFuc5 was internalized through the C-type carbohydrate recognition domain of the cell membrane. Finally, usnic acid, both in its free form and encapsulated in fucoidan-coated liposomes (UA-LipoFuc5), was effective against infected macrophages. Hence, this preliminary investigation suggests that encapsulated usnic acid will aid in further studies related to infected macrophages and may be a potential option for tuberculosis treatment.
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Affiliation(s)
- Taciana Lima Salviano
- Keizo Asami Immunopathology Laboratory, Federal University of Pernambuco, Recife, 50670-901, Brazil
| | | | | | - Marcela Araújo Pereira
- Keizo Asami Immunopathology Laboratory, Federal University of Pernambuco, Recife, 50670-901, Brazil
| | | | | | - Fabrício Oliveira Souto
- Keizo Asami Immunopathology Laboratory, Federal University of Pernambuco, Recife, 50670-901, Brazil
| | | | | | | | - Bezerra Sidicleia Costa Silva
- Department of Fundamental Chemistry, Hybrid Interface and Colloid Compound Laboratory, Federal University of Pernambuco, Recife, 50670-901, Brazil
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Liposome-coated nano doxorubicin induces apoptosis on oral squamous cell carcinoma CAL-27 cells. Arch Oral Biol 2019; 103:47-54. [PMID: 31132617 DOI: 10.1016/j.archoralbio.2019.05.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 05/09/2019] [Accepted: 05/12/2019] [Indexed: 02/07/2023]
Abstract
OBJECTIVE This study aims to investigate the apoptotic effect of Doxorubicin and its nano-formulated form (Doxil) on oral squamous cell carcinoma CAL-27 cells. DESIGN Cell viability using MTT assay, mode of cell death using fluorescence analysis, expression of the apoptotic marker caspase-3 using indirect ELISA technique and expression of C-Myc gene using reverse transcriptase and real time PCR. RESULTS Doxil treatment resulted in a higher percentage of apoptotic cells than doxorubicin treatment, while doxorubicin treatment resulted in a higher percentage of necrotic cells than Doxil treatment. Doxil-treated cells exhibited 3.38-fold higher caspase-3 levels than control cells, while doxorubicin significantly increased caspase-3 levels by 2.72-fold. The percentage of C-Myc mRNA inhibition was 27% in doxorubicin-treated cells and 41% in Doxil-treated cells. CONCLUSIONS Doxil exerted a higher apoptotic effect on CAL-27 cells compared to doxorubicin. It showed a higher increase in capase-3 level than doxorubicin and also exerted a more percentage of C-Myc mRNA inhibition.
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Ab’lah NN, Konduru Venkata N, Wong TW. Development of resistant corn starch for use as an oral colon-specific nanoparticulate drug carrier. PURE APPL CHEM 2018. [DOI: 10.1515/pac-2017-0806] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Abstract
Starch is constituted of amylose and amylopectin. Debranching of amylopectin converts it into amylose thereby producing resistant starch which is known to be less digestible by the amylase. This study designed resistant starch using acid hydrolysis and heat-moisture treatment methods with native corn starch as the starting material. Both native and processed starches were subjected to Fourier transform infrared spectroscopy, X-ray diffractometry, differential scanning calorimetry and molecular weight analysis. They were nanospray-dried into nanoparticles with 5-fluorouracil as the drug of interest for colon cancer treatment. These nanoparticles were subjected to size, zeta potential, morphology, drug content and in vitro drug release analysis. Heat-moisture treatment of native corn starch enabled the formation of resistant starch through amylopectin debranching and molecular weight reduction thereby enhancing hydrogen bonding between the starch molecules at the amorphous phase and gelatinization capacity. The nanoparticles prepared from resistant starch demonstrated similar drug release as those of native starch in spite of the resistant starch had a lower molecular weight. The resistant starch is envisaged to be resistant to the digestive action of amylase in intestinal tract without the formed nanoparticles exhibiting excessively fast drug release in comparison to native starch. With reduced branching, it represents an ideal precursor for targeting ligand conjugation in design of oral colon-specific nanoparticulate drug carrier.
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Affiliation(s)
- Norul Nazilah Ab’lah
- Non-Destructive Biomedical and Pharmaceutical Research Centre, iPROMISE , Universiti Teknologi MARA, Puncak Alam , 42300 Selangor , Malaysia
- Particle Design Research Group, Faculty of Pharmacy , Universiti Teknologi MARA, Puncak Alam , 42300 Selangor , Malaysia
- Centre of Foundation Studies, Universiti Teknologi MARA, Dengkil , 43800 Selangor , Malaysia
| | - Nagarjun Konduru Venkata
- Department of Environmental Health , Harvard T.H. Chan School of Public Health, Harvard University, 665, Huntington Avenue , Boston, MA 02115 , USA
| | - Tin Wui Wong
- Non-Destructive Biomedical and Pharmaceutical Research Centre, iPROMISE , Universiti Teknologi MARA, Puncak Alam , 42300 Selangor , Malaysia
- Particle Design Research Group, Faculty of Pharmacy , Universiti Teknologi MARA, Puncak Alam , 42300 Selangor , Malaysia , e-mail:
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Carme Coll Ferrer M, Sobolewski P, Composto RJ, Eckmann DM. Cellular Uptake and Intracellular Cargo Release From Dextran Based Nanogel Drug Carriers. J Nanotechnol Eng Med 2013; 4:110021-110028. [PMID: 23917337 DOI: 10.1115/1.4023246] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Revised: 12/10/2012] [Indexed: 12/23/2022]
Abstract
Nanogels (NG) hold great promise as a drug delivery platform. In this work, we examine the potential of lysozyme-dextran nanogels (LDNG) as drug carriers in vitro using two cell lines: a model target tissue, human umbilical cord vein endothelial cells (HUVEC) and a model of the mononuclear phagocyte system (phorbol 12-myristate 13-acetate (PMA)-stimulated THP-1 cells). The LDNG (∼100 nm) were prepared with rhodamine-label dextran (LRDNG) via Maillard reaction followed by heat-gelation reaction and were loaded with a fluorescent probe, 5-hexadecanoylaminofluorescein (HAF), as a mock drug. Epifluorescence microscopy confirmed rapid uptake of LRDNG by HUVEC. Although LysoTracker Green staining indicated a lysosomal fate for LRDNG, the mock drug cargo (HAF) diffused extensively inside the cell within 15 min. Flow cytometry and confocal microscopy indicated slow uptake of LRDNG in PMA-stimulated THP-1 cells, with only 41% of cells containing LRDNG after 24 h exposure. Finally, 24 h exposure to LRDNG did not affect the viability of either cell type at the dose studied (20 μg/ml). At a higher dose (200 μg/ml), LRDNG resulted in a marked loss of viability of HUVEC and THP-1, measuring 30% and 38%, respectively. Collectively, our results demonstrate the great potential of LRDNG as a drug delivery platform, combining simple production, rapid uptake and cargo release in target cells with "stealth" properties and low cytotoxicity.
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Affiliation(s)
- M Carme Coll Ferrer
- Department of Anesthesiology and Critical Care and Department of Materials Science and Engineering, University of Pennsylvania , Philadelphia, PA 19104
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