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Elfadil D, Elkhatib WF, El-Sayyad GS. Promising advances in nanobiotic-based formulations for drug specific targeting against multidrug-resistant microbes and biofilm-associated infections. Microb Pathog 2022; 170:105721. [PMID: 35970290 DOI: 10.1016/j.micpath.2022.105721] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 08/06/2022] [Accepted: 08/08/2022] [Indexed: 10/15/2022]
Abstract
Antimicrobial agents and alternative strategies to combat bacterial infections have become urgent due to the rapid development of multidrug-resistant bacteria caused by the misuse and overuse of antibiotics, as well as the ineffectiveness of antibiotics against difficult-to-treat infectious diseases. Nanobiotics is one of the strategies being explored to counter the increase in antibiotic-resistant bacteria. Nanobiotics are antibiotic molecules encapsulated in nanoparticles or artificially engineered pure antibiotics that are ≤ 100 nm in size in at least one dimension. Formulation scientists recognize nanobiotic delivery systems as an effective strategy to overcome the limitations associated with conventional antibiotic therapy. This review highlights the general mechanisms by which nanobiotics can be used to target resistant microbes and biofilm-associated infections. We focus on the design elements, properties, characterization, and toxicity assessment of organic nanoparticles, inorganic nanoparticle and molecularly imprinted polymer-based nano-formulations that can be designed to improve the efficacy of nanobiotic formulation.
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Affiliation(s)
- Dounia Elfadil
- Biology and Chemistry Department, Hassan II University of Casablanca, Morocco
| | - Walid F Elkhatib
- Microbiology and Immunology Department, Ain Shams University, African Union Organization St., Abbassia, Cairo, 11566, Egypt; Department of Microbiology and Immunology, Galala University, New Galala City, Suez, Egypt.
| | - Gharieb S El-Sayyad
- Department of Microbiology and Immunology, Galala University, New Galala City, Suez, Egypt; Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt.
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Mitotropic triphenylphosphonium doxorubicin-loaded core-shell nanoparticles for cellular and mitochondrial sequential targeting of breast cancer. Int J Pharm 2021; 606:120936. [PMID: 34310958 DOI: 10.1016/j.ijpharm.2021.120936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 07/05/2021] [Accepted: 07/21/2021] [Indexed: 11/23/2022]
Abstract
HYPOTHESES Targeted therapy exploits cancerous niches' properties including acidic extracellular environment, hypoxic tumor core, and over expression of tumor-specific surface antigens. The present study aims to develop and evaluate a sequential targeted core-shell nanoparticulate (NPs) system for treatment of breast cancer. Sequential (double-stage) targeting was achieved at the cellular-level through employing the selective CD44- receptor binding hyaluronic acid (HA), followed by subcellular mitochondrial drug-delivery using the mitotropic triphenylphosphonium-conjugated doxorubicin (DOX-TPP+). EXPERIMENTS NPs were prepared through incorporation of the electrostatic-complexes of DOX.HCl/DOX-TPP+ with tripolyphosphate (STPP-) into chitosan (CS) forming the core that was further coated with HA shell. Physicochemical characterization techniques namely; FTIR, DSC, DLS, morphological evaluation and spectroscopic assessments were implemented. Moreover, the drug entrapment efficiency (EE%), loading capacity (LC%), drug release profile and kinetics were investigated. Lastly, to validate the biological efficiency of the developed NPs, cytotoxic activity was evaluated as well as flow cytometric analyses to assess apoptosis induction and cell-cycle arrest were studied. FINDINGS Results showed that, the obtained core-shell NPs possessed a spherical shape with a mean size of 220-280 nm and attained high EE% and LC%. In-vitro cytotoxicity evaluations demonstrated successful apoptosis induction and cell-cycle abrogation. Moreover, in-vivo studies on Solid Ehrlich carcinoma (SEC)-bearing mice confirmed the efficient anticancer activity of the mitotropic DOX-TPP+-loaded NPs. Conclusively, the developed core-shell NPs proved efficient in sequential targeting of DOX to breast cancer.
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Gonzalez-Fajardo L, Ndaya D, Kasi RM, Lu X. Influence of the method of preparation on the characteristics and performance of cholesterol-based polymeric nanoparticles for redox-triggered release of doxorubicin in tumor cells. Int J Pharm 2019; 571:118701. [DOI: 10.1016/j.ijpharm.2019.118701] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 09/04/2019] [Accepted: 09/14/2019] [Indexed: 12/18/2022]
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Glass SB, Gonzalez-Fajardo L, Beringhs AO, Lu X. Redox Potential and ROS-Mediated Nanomedicines for Improving Cancer Therapy. Antioxid Redox Signal 2019; 30:747-761. [PMID: 28990403 DOI: 10.1089/ars.2017.7370] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
SIGNIFICANCE The overabundance of reactive oxygen species (ROS) and antioxidants in cancer cells represents a challenge for therapeutic intervention, while also providing an opportunity for the development of new strategies to improve clinical therapeutic outcomes. Recent Advances: Nanotechnology has advanced tremendously in recent decades and now offers many potential opportunities to leverage altered redox status to improve conventional therapies. Highly tunable nanoparticle delivery systems have shown great promise for improving the following: (i) chemotherapy via selective redox-sensitive drug release in tumor cells and limited systemic toxicity; (ii) photodynamic therapy via enhancing photoactivation and/or ROS production; and (iii) radiation therapy via enhancing ROS production. Great progress has also been made regarding novel nanoparticle-mediated therapies to enhance tumor cell death via ROS generation and angiogenic inhibition. CRITICAL ISSUES Current anticancer therapies are limited by systemic side effects and resistance. The inherent heterogeneity and hypoxic status of solid tumors impose significant barriers for even the most rationally designed nanoparticle systems. In addition, few comprehensive biodistribution and toxicity evaluations exist, and clinical efficacy remains to be established. The practicality of many nanoparticle systems is compromised by variable in vivo responses and scale-up difficulties due to complicated chemistry and prohibitive manufacturing costs. FUTURE DIRECTIONS As nanoparticle design continues to advance, improved therapeutic efficacy will likely follow. Actively targeted systems may improve distribution specificity but more positive clinical demonstrations are needed. Further investigation into systemic and intracellular distribution as well as toxicity will improve understanding of how these nanoparticle systems can be applied to improve existing therapies.
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Affiliation(s)
- Sterling B Glass
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, Connecticut
| | | | | | - Xiuling Lu
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, Connecticut
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Simonson AW, Lawanprasert A, Goralski TDP, Keiler KC, Medina SH. Bioresponsive peptide-polysaccharide nanogels - A versatile delivery system to augment the utility of bioactive cargo. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2018; 17:391-400. [PMID: 30399437 DOI: 10.1016/j.nano.2018.10.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 09/14/2018] [Accepted: 10/09/2018] [Indexed: 02/02/2023]
Abstract
We report the design, synthesis and efficacy of a new class of gel-like nano-carrier, or 'nanogel', prepared via templated electrostatic assembly of anionic hyaluronic acid (HA) polysaccharides with the cationic peptide amphiphile poly-L-lysine (PLL). Small molecules and proteins present during nanogel assembly become directly encapsulated within the carrier and are precisely released by tuning the nanogel HA:PLL ratio to control particle swelling. Remarkably, nanogels exhibit versatile and complimentary mechanisms of cargo delivery depending on the biologic context. For example, in mammalian cells, nanogels are rapidly internalized and escape the endosome to both deliver membrane-impermeable protein cargo into the cytoplasm and improve chemotherapeutic potency in drug resistant cancer cells. In bacteria, nanogels permeabilize microbial membranes to sensitize bacterial pathogens to the action of a loaded antibiotic. Thus, peptide nanogels represent a versatile, readily scalable and bio-responsive carrier capable of augmenting and enhancing the utility of a broad range of biomolecular cargoes.
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Affiliation(s)
- Andrew W Simonson
- Department of Biomedical Engineering, Pennsylvania State University, University Park, PA, USA
| | - Atip Lawanprasert
- Department of Biomedical Engineering, Pennsylvania State University, University Park, PA, USA
| | - Tyler D P Goralski
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA, USA
| | - Kenneth C Keiler
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA, USA
| | - Scott H Medina
- Department of Biomedical Engineering, Pennsylvania State University, University Park, PA, USA.
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6
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Kalhapure RS, Renukuntla J. Thermo- and pH dual responsive polymeric micelles and nanoparticles. Chem Biol Interact 2018; 295:20-37. [DOI: 10.1016/j.cbi.2018.07.016] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 06/28/2018] [Accepted: 07/19/2018] [Indexed: 12/31/2022]
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7
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Sierpe R, Noyong M, Simon U, Aguayo D, Huerta J, Kogan MJ, Yutronic N. Construction of 6-thioguanine and 6-mercaptopurine carriers based on βcyclodextrins and gold nanoparticles. Carbohydr Polym 2017; 177:22-31. [DOI: 10.1016/j.carbpol.2017.08.102] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 07/26/2017] [Accepted: 08/20/2017] [Indexed: 12/18/2022]
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8
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Parlak O, Turner AP. Switchable bioelectronics. Biosens Bioelectron 2016; 76:251-65. [DOI: 10.1016/j.bios.2015.06.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Revised: 06/09/2015] [Accepted: 06/11/2015] [Indexed: 12/26/2022]
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Sierpe R, Lang E, Jara P, Guerrero AR, Chornik B, Kogan MJ, Yutronic N. Gold nanoparticles interacting with β-cyclodextrin-phenylethylamine inclusion complex: a ternary system for photothermal drug release. ACS APPLIED MATERIALS & INTERFACES 2015; 7:15177-15188. [PMID: 26091143 DOI: 10.1021/acsami.5b00186] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report the synthesis of a 1:1 β-cyclodextrin-phenylethylamine (βCD-PhEA) inclusion complex (IC) and the adhesion of gold nanoparticles (AuNPs) onto microcrystals of this complex, which forms a ternary system. The formation of the IC was confirmed by powder X-ray diffraction and NMR analyses ((1)H and ROESY). The stability constant of the IC (760 M(-1)) was determined using the phase solubility method. The adhesion of AuNPs was obtained using the magnetron sputtering technique, and the presence of AuNPs was confirmed using UV-vis spectroscopy (surface plasmon resonance effect), which showed an absorbance at 533 nm. The powder X-ray diffractograms of βCD-PhEA were similar to those of the crystals decorated with AuNPs. A comparison of the one- and two-dimensional NMR spectra of the IC with and without AuNPs suggests partial displacement of the guest to the outside of the βCD due to attraction toward AuNPs, a characteristic tropism effect. The size, morphology, and distribution of the AuNPs were analyzed using TEM and SEM. The average size of the AuNPs was 14 nm. Changes in the IR and Raman spectra were attributed to the formation of the complex and to the specific interactions of this group with the AuNPs. Laser irradiation assays show that the ternary system βCD-PhEA-AuNPs in solution enables the release of the guest.
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Affiliation(s)
- Rodrigo Sierpe
- †Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Sergio Livingstone #1007, Independencia, Santiago, Chile
- ‡Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras #3425, Ñuñoa, Santiago, Chile
- ∥Advanced Center for Chronic Diseases (ACCDiS), Sergio Livingstone #1007, Independencia, Santiago, Chile
| | - Erika Lang
- ‡Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras #3425, Ñuñoa, Santiago, Chile
| | - Paul Jara
- ‡Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras #3425, Ñuñoa, Santiago, Chile
| | - Ariel R Guerrero
- †Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Sergio Livingstone #1007, Independencia, Santiago, Chile
- ∥Advanced Center for Chronic Diseases (ACCDiS), Sergio Livingstone #1007, Independencia, Santiago, Chile
| | - Boris Chornik
- §Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Beauchef #850, Santiago, Chile
| | - Marcelo J Kogan
- †Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Sergio Livingstone #1007, Independencia, Santiago, Chile
- ∥Advanced Center for Chronic Diseases (ACCDiS), Sergio Livingstone #1007, Independencia, Santiago, Chile
| | - Nicolás Yutronic
- ‡Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras #3425, Ñuñoa, Santiago, Chile
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Phillips DJ, Gibson MI. Towards being genuinely smart: ‘isothermally-responsive’ polymers as versatile, programmable scaffolds for biologically-adaptable materials. Polym Chem 2015. [DOI: 10.1039/c4py01539h] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thermo-responsive polymers are of broad interest in a range of biomedical and biotechnological fields. This review summaries the use of ‘isothermal’ transitions where thermo-responsive polymers are re-programmed to respond to other stimuli, but with the same outputs, with the aim of making them ‘smarter’.
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Affiliation(s)
| | - Matthew I. Gibson
- Department of Chemistry
- University of Warwick
- Coventry
- UK
- Warwick Medical School
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Fonseca AC, Ferreira P, Cordeiro RA, Mendonça PV, Góis JR, Gil MH, Coelho JFJ. Drug Delivery Systems for Predictive Medicine: Polymers as Tools for Advanced Applications. NEW STRATEGIES TO ADVANCE PRE/DIABETES CARE: INTEGRATIVE APPROACH BY PPPM 2013. [DOI: 10.1007/978-94-007-5971-8_16] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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12
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Carampin P, Lallana E, Laliturai J, Carroccio SC, Puglisi C, Tirelli N. Oxidant-Dependent REDOX Responsiveness of Polysulfides. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201200264] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Liu J, Tabata Y. Effect of modification manner on the photodynamic antitumor activity of C60 modified with pullulan. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 22:2147-63. [PMID: 21902907 DOI: 10.1163/092050610x535680] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
To design a novel cytospecific photosensitizer for photodynamic antitumor therapy, a fullerene (C(60)) was chemically modified with pullulan, a water-soluble polysaccharide with a high affinity for asialoglycoprotein receptors (ASGPRs). The effect of the molecular weight of pullulan and the modification manner to C(60) on the photodynamic antitumor activity of C(60) modified with pullulan was evaluated. In this study, two modification manners were selected. First, ethylene diamine was chemically introduced to the hydroxyl groups of pullulan with different molecular weights. Then, C(60) was coupled to pullulan through the amino groups introduced (pendant type). Second, ethylene diamine was introduced to the terminal aldehyde groups of pullulan by a reductive amination reaction, and then the pullulan with the terminal amino groups was coupled to C(60) (terminal type). Irrespective of the pullulan molecular and the modification manner, the C(60)-pullulan conjugates exhibited a similar ability to generate superoxide anions upon light irradiation. Comparing the C(60)-pullulan conjugates of pendant and terminal types, a high lectin affinity was observed for the latter conjugates. The conjugates showed a high affinity for HepG2 cells with ASGPRs and, consequently, a strong in vitro antitumor activity on the cells. It is concluded that the manner of pullulan modification is a key factor contributing to the photodynamic antitumor activity of modified C(60).
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Affiliation(s)
- Jian Liu
- Department of Biomaterials, Field of Tissue Engineering, Institute for Frontier Medical Sciences, Kyoto University, Sakyo-ku, Kyoto, Japan
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Abulateefeh SR, Spain SG, Aylott JW, Chan WC, Garnett MC, Alexander C. Thermoresponsive polymer colloids for drug delivery and cancer therapy. Macromol Biosci 2011; 11:1722-34. [PMID: 22012834 DOI: 10.1002/mabi.201100252] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Revised: 08/23/2011] [Indexed: 11/12/2022]
Abstract
Many difficulties in treating cancer arise from the problems in directing highly cytotoxic agents to the deseased tissues, cells and intracellular compartments. Many drug delivery systems have been devised to address this problem, including those that show a change in properties in response to a temperature stimulus. In particular, colloidal materials based on thermoresponsive polymers offer a means to transport drugs selectively into tumour tissues that are hyperthermic, either intrinsically or through the application of clinical procedures such as localised heating. In this paper, the key attributes of thermoresponsive polymer colloids are considered, a number of important recent examples are discussed and the possible future developments of these materials are evaluated.
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Affiliation(s)
- Samer R Abulateefeh
- School of Pharmacy, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
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15
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Zhang W, Gilstrap K, Wu L, K C RB, Moss MA, Wang Q, Lu X, He X. Synthesis and characterization of thermally responsive Pluronic F127-chitosan nanocapsules for controlled release and intracellular delivery of small molecules. ACS NANO 2010; 4:6747-6759. [PMID: 21038924 DOI: 10.1021/nn101617n] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In this study, we synthesized empty core-shell structured nanocapsules of Pluronic F127 and chitosan and characterized the thermal responsiveness of the nanocapsules in size and wall-permeability. Moreover, we determined the feasibility of using the nanocapsules to encapsulate small molecules for temperature-controlled release and intracellular delivery. The nanocapsules are ∼37 nm at 37 °C and expand to ∼240 nm when cooled to 4 °C in aqueous solutions, exhibiting >200 times change in volume. Moreover, the permeability of the nanocapsule wall is high at 4 °C (when the nanocapsules are swollen), allowing free diffusion of small molecules (ethidium bromide, MW = 394.3 Da) across the wall, while at 37 °C (when the nanocapsules are swollen), the wall-permeability is so low that the small molecules can be effectively withheld in the nanocapsule for hours. As a result of their thermal responsiveness in size and wall-permeability, the nanocapsules are capable of encapsulating the small molecules for temperature-controlled release and intracellular delivery into the cytosol of both cancerous (MCF-7) and noncancerous (C3H10T1/2) mammalian cells. The cancerous cells were found to take up the nanocapsules much faster than the noncancerous cells during 45 min incubation at 37 °C. Moreover, toxicity of the nanocapsules as a delivery vehicle was found to be negligible. The Pluronic F127-chitosan nanocapsules should be very useful for encapsulating small therapeutic agents to treat diseases particularly when it is combined with cryotherapy where the process of cooling and heating between 37 °C and hypothermic temperatures is naturally done.
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Affiliation(s)
- Wujie Zhang
- Department of Mechanical Engineering, University of South Carolina, Columbia, South Carolina 29208, United States
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He Y, Zhang Y, Xiao Y, Lang M. Dual-response nanocarrier based on graft copolymers with hydrazone bond linkages for improved drug delivery. Colloids Surf B Biointerfaces 2010; 80:145-54. [DOI: 10.1016/j.colsurfb.2010.05.038] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2010] [Revised: 05/26/2010] [Accepted: 05/27/2010] [Indexed: 10/19/2022]
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Coelho JF, Ferreira PC, Alves P, Cordeiro R, Fonseca AC, Góis JR, Gil MH. Drug delivery systems: Advanced technologies potentially applicable in personalized treatments. EPMA J 2010; 1:164-209. [PMID: 23199049 PMCID: PMC3405312 DOI: 10.1007/s13167-010-0001-x] [Citation(s) in RCA: 195] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2009] [Accepted: 01/25/2010] [Indexed: 12/31/2022]
Abstract
Advanced drug delivery systems (DDS) present indubitable benefits for drug administration. Over the past three decades, new approaches have been suggested for the development of novel carriers for drug delivery. In this review, we describe general concepts and emerging research in this field based on multidisciplinary approaches aimed at creating personalized treatment for a broad range of highly prevalent diseases (e.g., cancer and diabetes). This review is composed of two parts. The first part provides an overview on currently available drug delivery technologies including a brief history on the development of these systems and some of the research strategies applied. The second part provides information about the most advanced drug delivery devices using stimuli-responsive polymers. Their synthesis using controlled-living radical polymerization strategy is described. In a near future it is predictable the appearance of new effective tailor-made DDS, resulting from knowledge of different interdisciplinary sciences, in a perspective of creating personalized medical solutions.
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Affiliation(s)
- Jorge F. Coelho
- Department of Chemical Engineering, University of Coimbra, 3030-290 Coimbra, Portugal
| | - Paula C. Ferreira
- Department of Chemical Engineering, University of Coimbra, 3030-290 Coimbra, Portugal
- Department of Health Sciences, Portuguese Catholic University, 3504-505 Viseu, Portugal
| | - Patricia Alves
- Department of Chemical Engineering, University of Coimbra, 3030-290 Coimbra, Portugal
| | - Rosemeyre Cordeiro
- Department of Chemical Engineering, University of Coimbra, 3030-290 Coimbra, Portugal
| | - Ana C. Fonseca
- Department of Chemical Engineering, University of Coimbra, 3030-290 Coimbra, Portugal
| | - Joana R. Góis
- Department of Chemical Engineering, University of Coimbra, 3030-290 Coimbra, Portugal
| | - Maria H. Gil
- Department of Chemical Engineering, University of Coimbra, 3030-290 Coimbra, Portugal
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Zhang W, Rong J, Wang Q, He X. The encapsulation and intracellular delivery of trehalose using a thermally responsive nanocapsule. NANOTECHNOLOGY 2009; 20:275101. [PMID: 19528681 DOI: 10.1088/0957-4484/20/27/275101] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The thermally responsive wall permeability of an empty core-shell structured Pluronic nanocapsule (together with its temperature dependent size and surface charge) was successfully utilized for encapsulation, intracellular delivery, and controlled release of trehalose, a highly hydrophilic small (M(W) = 342 D) molecule (a disaccharide of glucose) that is exceptional for long-term stabilization of biologicals (particularly at ambient temperatures). It was found that trehalose can be physically encapsulated in the nanocapsule using a soaking-freeze-drying-heating procedure. The nanocapsule is capable of physically withholding trehalose with negligible release in hours for cellular uptake at 37 degrees C when its wall permeability is low. A quick release of the encapsulated sugar can be achieved by thermally cycling the nanocapsule between 37 and 22 degrees C (or lower). A significant amount of trehalose (up to 0.3 M) can be delivered into NIH 3T3 fibroblasts by incubating the cells with the trehalose-encapsulated nanocapsules at 37 degrees C for 40 min. Moreover, cytotoxicity of the nanocapsule for the purpose of intracellular delivery of trehalose was found to be negligible. Altogether, the thermally responsive nanocapsule is effective for intracellular delivery of trehalose, which is critical for the long-term stabilization of mammalian cells at ambient temperatures and the eventual success of modern cell-based medicine.
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Affiliation(s)
- Wujie Zhang
- Department of Mechanical Engineering, University of South Carolina, 300 Main Street, Columbia, SC 29208, USA
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Teo BM, Chen F, Hatton TA, Grieser F, Ashokkumar M. Novel one-pot synthesis of magnetite latex nanoparticles by ultrasound irradiation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:2593-2595. [PMID: 19239188 DOI: 10.1021/la804278w] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A simple and efficacious procedure for the synthesis of magnetite nanoparticles has been achieved via a sonochemical miniemulsion polymerization process. The sonochemically synthesized magnetite encapsulated polymer latex particles exhibit excellent colloidal stability and strong magnetic properties, and are of a size that makes them technologically relevant. This novel method may be readily extended to the preparation of multiple combinations of different polymers and encapsulated materials.
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Affiliation(s)
- Boon M Teo
- Particulate Fluids Processing Centre, School of Chemistry, University of Melbourne, VIC 3010, Australia
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Tokarev I, Gopishetty V, Zhou J, Pita M, Motornov M, Katz E, Minko S. Stimuli-responsive hydrogel membranes coupled with biocatalytic processes. ACS APPLIED MATERIALS & INTERFACES 2009; 1:532-536. [PMID: 20355971 DOI: 10.1021/am800251a] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A nanostructured signal-responsive thin hydrogel membrane was coupled with enzyme-based systems to yield "smart" multisignal-responsive hybrid systems with built-in "logic". The enzyme systems transduce biochemical input signals into structural changes of the membrane, thus resulting in the amplification of the biochemical signals and their transformation into the gated transport of molecules through the membrane. Coupling of the biocatalytic systems with a stimuli-responsive membrane is a promising approach for the development of materials that can regulate transport and release of chemicals/drugs by receiving and processing the biochemical information via biochemical reactions.
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Motornov M, Zhou J, Pita M, Gopishetty V, Tokarev I, Katz E, Minko S. "Chemical transformers" from nanoparticle ensembles operated with logic. NANO LETTERS 2008; 8:2993-2997. [PMID: 18700803 DOI: 10.1021/nl802059m] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The pH-responsive nanoparticles were coupled with information-processing enzyme-based systems to yield "smart" signal-responsive hybrid systems with built-in Boolean logic. The enzyme systems performed AND/OR logic operations, transducing biochemical input signals into reversible structural changes (signal-directed self-assembly) of the nanoparticle assemblies, thus resulting in the processing and amplification of the biochemical signals. The hybrid system mimics biological systems in effective processing of complex biochemical information, resulting in reversible changes of the self-assembled structures of the nanoparticles. The bioinspired approach to the nanostructured morphing materials could be used in future self-assembled molecular robotic systems.
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Affiliation(s)
- Mikhail Motornov
- Department of Chemistry and Biomolecular Science and NanoBio Laboratory, Clarkson University, Potsdam, New York 13699-5810, USA
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22
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Kotsokechagia T, Cellesi F, Thomas A, Niederberger M, Tirelli N. Preparation of ligand-free TiO2 (anatase) nanoparticles through a nonaqueous process and their surface functionalization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:6988-97. [PMID: 18522445 DOI: 10.1021/la800470e] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
We here present a new method for preparing ligand-free titania nanoparticles, which are easily amenable to surface functionalization in an aqueous environment. The specific advantage of this method is that it combines the advantages of nonaqueous synthetic processes (high crystallinity) to those of a surface functionalization in a water medium, which allows for a wider variety of biofunctional (and nonorganic-soluble) groups to be added on the nanoparticles. In particular, we report on the characterization of the three phases of synthesis, dispersion in water environment and surface functionalization of the nanoparticles, focusing on a qualitative evaluation of the surface adsorption mechanism.
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Affiliation(s)
- T Kotsokechagia
- Laboratory for Polymers and Biomaterials, School of Pharmacy and Pharmaceutical Sciences, University of Manchester, Manchester M13 9PT, United Kingdom
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23
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Abstract
Oxidation is an almost ubiquitous feature of inflammatory reactions. We discuss the development of nanocarriers that respond to the presence of oxidants with profound physical reorganization, which could in perspective allow their use for delivering anti-inflammatory principles in an inflammation-responsive fashion. We also present a study demonstrating that the response of polysulfide nanoparticles has a bulk character, i.e., the odixation reactions happen homogeneously throughout the nanoparticles, and not interfacially.
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24
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Kilcher G, Duckham C, Tirelli N. Emulsion macromonomer cross-linking. A preparative method for oxidation-responsive nanoparticles with a controlled network structure. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:12309-12317. [PMID: 17960944 DOI: 10.1021/la701543t] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We here report on a preparative, template-based method for oxidation-responsive, poly(propylene sulfide) cross-linked nanoparticles. In this study we demonstrate that preformed, narrow polydispersity, and end-functional polysulfides can be dispersed to yield stable emulsions, which can then be converted into stable nanoparticles through photochemically initiated cross-linking. The nanoparticle size is substantially templated on that of the precursor emulsions; the nanoparticles bulk is an elastomeric material with a homogeneous cross-linking density. The nanoparticles show a peculiar, two-stage behavior upon exposure to oxidants, which is likely composed of a first agglomeration phase followed by swelling.
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Affiliation(s)
- Giona Kilcher
- School of Pharmacy and Pharmaceutical Sciences, University of Manchester, Oxford Road, Manchester, United Kingdom
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