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Herzberger J, Fischer K, Leibig D, Bros M, Thiermann R, Frey H. Oxidation-Responsive and “Clickable” Poly(ethylene glycol) via Copolymerization of 2-(Methylthio)ethyl Glycidyl Ether. J Am Chem Soc 2016; 138:9212-23. [DOI: 10.1021/jacs.6b04548] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jana Herzberger
- Institute
of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
- Graduate School Materials Science in Mainz, Staudinger Weg 9, 55128 Mainz, Germany
| | - Karl Fischer
- Institute
of Physical Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Daniel Leibig
- Institute
of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
- Graduate School Materials Science in Mainz, Staudinger Weg 9, 55128 Mainz, Germany
| | - Matthias Bros
- Department
of Dermatology, University Medical Center of the Johannes Gutenberg-University, Langenbeckstrasse 1, 55131 Mainz, Germany
| | | | - Holger Frey
- Institute
of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
- Graduate School Materials Science in Mainz, Staudinger Weg 9, 55128 Mainz, Germany
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52
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Tapeinos C, Pandit A. Physical, Chemical, and Biological Structures based on ROS-Sensitive Moieties that are Able to Respond to Oxidative Microenvironments. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:5553-85. [PMID: 27184711 DOI: 10.1002/adma.201505376] [Citation(s) in RCA: 154] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Revised: 12/27/2015] [Indexed: 05/17/2023]
Abstract
Reactive oxygen species (ROS) (H2 O2 , OCl(-) , (•) OH, O2 (-) ) are a family of reactive molecules that are generated intracellularly and are engaged in many biological processes. In physiological concentrations, ROS act as signaling molecules to a number of metabolic pathways; however, in excess they can be harmful to living organisms. Overproduction of ROS has been related to many pathophysiological conditions and a number of studies have been reported in elucidating their mechanism in these conditions. With the aim of harnessing this role, a number of imaging tools and therapeutic compounds have been developed. Here these imaging and therapeutic tools are reviewed and particularly those structures with ROS-sensitivity based on their biomedical applications and their functional groups. There is also a brief discussion about the method of preparation as well as the mechanism of action.
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Affiliation(s)
- Christos Tapeinos
- Biosciences Building, Center for Research in Medical Devices, National University of Ireland, Galway, Galway, Ireland
| | - Abhay Pandit
- Biosciences Building, Center for Research in Medical Devices, National University of Ireland, Galway, Galway, Ireland
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53
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Carmona-Ribeiro AM, Prieto T, Nantes IL. Nanostructures for peroxidases. Front Mol Biosci 2015; 2:50. [PMID: 26389124 PMCID: PMC4558528 DOI: 10.3389/fmolb.2015.00050] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 08/19/2015] [Indexed: 11/13/2022] Open
Abstract
Peroxidases are enzymes catalyzing redox reactions that cleave peroxides. Their active redox centers have heme, cysteine thiols, selenium, manganese, and other chemical moieties. Peroxidases and their mimetic systems have several technological and biomedical applications such as environment protection, energy production, bioremediation, sensors and immunoassays design, and drug delivery devices. The combination of peroxidases or systems with peroxidase-like activity with nanostructures such as nanoparticles, nanotubes, thin films, liposomes, micelles, nanoflowers, nanorods and others is often an efficient strategy to improve catalytic activity, targeting, and reusability.
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Affiliation(s)
- Ana M Carmona-Ribeiro
- Biocolloids Laboratory, Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo São Paulo, Brazil
| | - Tatiana Prieto
- NanoBioMav, Centro de Ciências Naturais e Humanas, Universidade Federal do ABC Santo André, Brazil
| | - Iseli L Nantes
- NanoBioMav, Centro de Ciências Naturais e Humanas, Universidade Federal do ABC Santo André, Brazil
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54
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Kita M, Yamamoto J, Morisaki T, Komiya C, Inokuma T, Miyamoto L, Tsuchiya K, Shigenaga A, Otaka A. Design and synthesis of a hydrogen peroxide-responsive amino acid that induces peptide bond cleavage after exposure to hydrogen peroxide. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.05.060] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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55
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Lim J, Jung U, Joe WT, Kim ET, Pyun J, Char K. High Sulfur Content Polymer Nanoparticles Obtained from Interfacial Polymerization of Sodium Polysulfide and 1,2,3-Trichloropropane in Water. Macromol Rapid Commun 2015; 36:1103-7. [DOI: 10.1002/marc.201500006] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 02/28/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Jeewoo Lim
- The National Creative Research Initiative Center for Intelligent Hybrids; The WCU Program of Chemical Convergence for Energy & Environment; School of Chemical & Biological Engineering; Seoul National University; Seoul 151-744 Republic of Korea
| | - Unho Jung
- The National Creative Research Initiative Center for Intelligent Hybrids; The WCU Program of Chemical Convergence for Energy & Environment; School of Chemical & Biological Engineering; Seoul National University; Seoul 151-744 Republic of Korea
| | - Won Tae Joe
- The National Creative Research Initiative Center for Intelligent Hybrids; The WCU Program of Chemical Convergence for Energy & Environment; School of Chemical & Biological Engineering; Seoul National University; Seoul 151-744 Republic of Korea
| | - Eui Tae Kim
- The National Creative Research Initiative Center for Intelligent Hybrids; The WCU Program of Chemical Convergence for Energy & Environment; School of Chemical & Biological Engineering; Seoul National University; Seoul 151-744 Republic of Korea
| | - Jeffrey Pyun
- Department of Chemistry & Biochemistry; The University of Arizona; 1306 East University Boulevard Tucson AZ 85721 USA
| | - Kookheon Char
- The National Creative Research Initiative Center for Intelligent Hybrids; The WCU Program of Chemical Convergence for Energy & Environment; School of Chemical & Biological Engineering; Seoul National University; Seoul 151-744 Republic of Korea
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56
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Zhang D, Wei Y, Chen K, Zhang X, Xu X, Shi Q, Han S, Chen X, Gong H, Li X, Zhang J. Biocompatible reactive oxygen species (ROS)-responsive nanoparticles as superior drug delivery vehicles. Adv Healthc Mater 2015; 4:69-76. [PMID: 25147049 DOI: 10.1002/adhm.201400299] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Revised: 07/17/2014] [Indexed: 01/09/2023]
Abstract
A novel reactive oxygen species (ROS)-responsive nanoplatform can be successfully manufactured from a ROS-triggerable β-cyclodextrin material. Extensive in vitro and in vivo studies validate that this nanoscaled system may serve as a new drug delivery vehicle with well-defined ROS-sensitivity and superior biocompatibility. This nanocarrier can be used for ROS-triggered transport of diverse therapeutics and imaging agents.
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Affiliation(s)
- Dinglin Zhang
- Department of Pharmaceutics, College of Pharmacy; Third Military Medical University; Chongqing 400038 China
| | - Yanling Wei
- Department of Gastroenterology, Daping Hospital; Third Military Medical University; Chongqing 400042 China
| | - Kai Chen
- Department of Pharmaceutics, College of Pharmacy; Third Military Medical University; Chongqing 400038 China
| | - Xiangjun Zhang
- Department of Pharmaceutics, College of Pharmacy; Third Military Medical University; Chongqing 400038 China
| | - Xiaoqiu Xu
- Department of Pharmaceutics, College of Pharmacy; Third Military Medical University; Chongqing 400038 China
| | - Qing Shi
- Department of Pharmaceutics, College of Pharmacy; Third Military Medical University; Chongqing 400038 China
| | - Songling Han
- Department of Pharmaceutics, College of Pharmacy; Third Military Medical University; Chongqing 400038 China
| | - Xin Chen
- Institute of Materia Medica; Third Military Medical University; Chongqing 400038 China
| | - Hao Gong
- Department of Gastroenterology, Daping Hospital; Third Military Medical University; Chongqing 400042 China
| | - Xiaohui Li
- Institute of Materia Medica; Third Military Medical University; Chongqing 400038 China
| | - Jianxiang Zhang
- Department of Pharmaceutics, College of Pharmacy; Third Military Medical University; Chongqing 400038 China
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57
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Phillips DJ, Gibson MI. Redox-sensitive materials for drug delivery: targeting the correct intracellular environment, tuning release rates, and appropriate predictive systems. Antioxid Redox Signal 2014; 21:786-803. [PMID: 24219144 DOI: 10.1089/ars.2013.5728] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
SIGNIFICANCE The development of responsive drug delivery systems (DDS) holds great promise as a tool for improving the pharmacokinetic properties of drug compounds. Redox-sensitive systems are particularly attractive given the rich variety of redox gradients present in vivo. These gradients, where the circulation is generally considered oxidizing and the cellular environment is substantially more reducing, provide attractive options for targeted, specific cargo delivery. RECENT ADVANCES Experimental evidence suggests that a "one size fits all" redox gradient does not exist. Rather, there are subtle differences in redox potential within a cell, while the chemical nature of reducing agents in these microenvironments varies. Recent works have demonstrated an ability to modulate the degradation rate of redox-susceptible groups and, hence, provide new tools to engineer precision-targeted DDS. CRITICAL ISSUES Modern synthetic and macromolecular chemistry provides access to a wide range of redox-susceptible architectures. However, in order to utilize these in real applications, the actual chemical nature of the redox-susceptible group, the sub-cellular location being targeted, and the redox microenvironment being encountered should be considered in detail. This is critical to avoid the over-simplification possible when using non-biological reducing agents, which may provide inaccurate kinetic information, and to ensure these materials can be advanced beyond simple "on/off" systems. Furthermore, a strong case can be made for the use of biorelevant reducing agents such as glutathione when demonstrating a materials redox response. FUTURE DIRECTIONS A further understanding of the complexities of the extra- and intracellular microenvironments would greatly assist with the design and application of DDS.
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Affiliation(s)
- Daniel J Phillips
- Department of Chemistry, University of Warwick , Coventry, United Kingdom
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58
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Joshi-Barr S, de Gracia Lux C, Mahmoud E, Almutairi A. Exploiting oxidative microenvironments in the body as triggers for drug delivery systems. Antioxid Redox Signal 2014; 21:730-54. [PMID: 24328819 PMCID: PMC4098119 DOI: 10.1089/ars.2013.5754] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
SIGNIFICANCE Reactive oxygen species and reactive nitrogen species (ROS/RNS) play an important role in cell signaling pathways. However, the increased production of these species may disrupt cellular homeostasis, giving rise to pathological conditions. Biomaterials that are responsive to ROS/RNS can be strategically used to specifically release therapeutics and diagnostic agents to regions undergoing oxidative stress. RECENT ADVANCES Many nanocarriers intended to exploit redox micro-environments as triggers for drug release, summarized and compared in this review, have recently been developed. We describe these carriers' chemical structures, strategies for payload protection and oxidation-selective release, and ROS/RNS sensitivity as tested in initial studies. CRITICAL ISSUES ROS/RNS are unstable, so reliable measures of their concentrations in various conditions are scarce. Combined with the dearth of materials shown to respond to physiologically relevant levels of ROS/RNS, evaluations of their true sensitivity are difficult. FUTURE DIRECTIONS Oxidation-responsive nanocarriers developed thus far show tremendous potential for applicability in vivo; however, the sensitivity of these chemistries needs to be fine tuned to enable responses to physiological levels of ROS and RNS.
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Affiliation(s)
- Shivanjali Joshi-Barr
- 1 Skaggs School of Pharmacy and Pharmaceutical Sciences, Laboratory of Bioresponsive Materials, University of California , San Diego, San Diego, California
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59
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Tian L, Yang J, Ji F, Liu Y, Yao F. Drug co-loading and pH-sensitive release core-shell nanoparticles via layer-by-layer assembly. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2014; 25:1573-89. [PMID: 24954168 DOI: 10.1080/09205063.2014.926000] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Multifunctional core-shell nanoparticles are widely used for biomedical and catalytic applications. In this work, bilayers of chitosan (Cs) and phosphorylated polyvinyl alcohol (PPVA) were sequentially deposited on 3-Aminopropyltri-ethoxysilane-modified SiO2 nanoparticles via layer-by-layer electrostatic self-assembly. The good spherical shape and size distribution were observed by DLS and transmission electron microscope analysis. 7-Hydroxycoumarin (7-HC) and rhodamine B (RhB) as model drugs were loaded in the core and shell of the nanoparticles separately. Confocal laser scanning microscopy shows the core-shell structure of HC-SiO2(PPVA/Cs)n-RhB nanoparticles and the embedded location of 7-HC and RhB. The pH-sensitive release investigation of RhB indicates that the release profiles of RhB from HC-SiO2(PPVA/Cs)3PPVA-RhB core-shell nanoparticles are totally different at pH values of 2.0, 7.4, and 9.2. These results predict that the multifunctional nanoparticle SiO2(PPVA/Cs)n has a great potential for drug delivery.
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Affiliation(s)
- Liang Tian
- a School of Chemical Engineering and Technology , Tianjin University , Tianjin 300072 , China
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60
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Maity SK, Bera S, Paikar A, Pramanik A, Haldar D. Fabrication of self-assembled peptidomimetic microspheres and hydrogen peroxide responsive release of nicotinamide. CrystEngComm 2014. [DOI: 10.1039/c3ce41796d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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61
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Song CC, Du FS, Li ZC. Oxidation-responsive polymers for biomedical applications. J Mater Chem B 2014; 2:3413-3426. [DOI: 10.1039/c3tb21725f] [Citation(s) in RCA: 139] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This article summarizes recent progress in the design and synthesis of various oxidation-responsive polymers and their application in biomedical fields.
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Affiliation(s)
- Cheng-Cheng Song
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Key Laboratory of Polymer Chemistry & Physics of Ministry of Education
- Department of Polymer Science & Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Fu-Sheng Du
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Key Laboratory of Polymer Chemistry & Physics of Ministry of Education
- Department of Polymer Science & Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Zi-Chen Li
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Key Laboratory of Polymer Chemistry & Physics of Ministry of Education
- Department of Polymer Science & Engineering
- College of Chemistry and Molecular Engineering
- Peking University
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62
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Jeanmaire D, Laliturai J, Almalik A, Carampin P, Richard d'Arcy, Lallana E, Evans R, Winpenny REP, Tirelli N. Chemical specificity in REDOX-responsive materials: the diverse effects of different Reactive Oxygen Species (ROS) on polysulfide nanoparticles. Polym Chem 2014. [DOI: 10.1039/c3py01475d] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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63
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Song CC, Ji R, Du FS, Li ZC. Oxidation-Responsive Poly(amino ester)s Containing Arylboronic Ester and Self-Immolative Motif: Synthesis and Degradation Study. Macromolecules 2013. [DOI: 10.1021/ma401656t] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Cheng-Cheng Song
- Beijing National Laboratory for Molecular Sciences, Key
Laboratory of Polymer Chemistry and Physics of Ministry of Education,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Ran Ji
- Beijing National Laboratory for Molecular Sciences, Key
Laboratory of Polymer Chemistry and Physics of Ministry of Education,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Fu-Sheng Du
- Beijing National Laboratory for Molecular Sciences, Key
Laboratory of Polymer Chemistry and Physics of Ministry of Education,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Zi-Chen Li
- Beijing National Laboratory for Molecular Sciences, Key
Laboratory of Polymer Chemistry and Physics of Ministry of Education,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
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64
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Fuhrmann K, Połomska A, Aeberli C, Castagner B, Gauthier MA, Leroux JC. Modular design of redox-responsive stabilizers for nanocrystals. ACS NANO 2013; 7:8243-8250. [PMID: 23968310 DOI: 10.1021/nn4037317] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Many potent drugs are difficult to administer intravenously due to poor aqueous solubility. A common approach for addressing this issue is to process them into colloidal dispersions known as "nanocrystals" (NCs). However, NCs possess high-energy surfaces that must be stabilized with surfactants to prevent aggregation. An optimal surfactant should have high affinity for the nanocrystal's surface to stabilize it, but may also include a trigger mechanism that could offer the possibility of altering size distribution and uptake of the NC. This study presents a modular and systematic strategy for optimizing the affinity of polymeric stabilizers for drug nanocrystals both before and after oxidation (i.e., the selected trigger), thus allowing for the optimal responsiveness for a given application to be identified. A library of 10 redox-responsive polymer stabilizers was prepared by postpolymerization modification, using the thiol-yne reaction, of two parent block copolymers. The stabilizing potential of these polymers for paclitaxel NCs is presented as well as the influence of oxidation on size and dissolution following exposure to reactive oxygen species (ROS), which are strongly associated with chronic inflammation and cancer. Owing to the versatility of postpolymerization modification, this contribution provides general tools for preparing triggered-sheddable stabilizing coatings for nanoparticles.
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Affiliation(s)
- Kathrin Fuhrmann
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology Zurich (ETH Zürich), Wolfgang-Pauli-Straße 10, 8093 Zurich, Switzerland
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65
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Affiliation(s)
- Stéphanie Deshayes
- Department of Bioengineering; University of California; Los Angeles California 90095
| | - Andrea M. Kasko
- Department of Bioengineering; University of California; Los Angeles California 90095
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66
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67
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Lallana E, Tirelli N. Oxidation-Responsive Polymers: Which Groups to Use, How to Make Them, What to Expect From Them (Biomedical Applications). MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201200502] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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68
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de Gracia Lux C, Joshi-Barr S, Nguyen T, Mahmoud E, Schopf E, Fomina N, Almutairi A. Biocompatible polymeric nanoparticles degrade and release cargo in response to biologically relevant levels of hydrogen peroxide. J Am Chem Soc 2012; 134:15758-64. [PMID: 22946840 PMCID: PMC3478073 DOI: 10.1021/ja303372u] [Citation(s) in RCA: 430] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Oxidative stress is caused predominantly by accumulation of hydrogen peroxide and distinguishes inflamed tissue from healthy tissue. Hydrogen peroxide could potentially be useful as a stimulus for targeted drug delivery to diseased tissue. However, current polymeric systems are not sensitive to biologically relevant concentrations of H(2)O(2) (50-100 μM). Here we report a new biocompatible polymeric capsule capable of undergoing backbone degradation and thus release upon exposure to such concentrations of hydrogen peroxide. Two polymeric structures were developed differing with respect to the linkage between the boronic ester group and the polymeric backbone: either direct (1) or via an ether linkage (2). Both polymers are stable in aqueous solution at normal pH, and exposure to peroxide induces the removal of the boronic ester protecting groups at physiological pH and temperature, revealing phenols along the backbone, which undergo quinone methide rearrangement to lead to polymer degradation. Considerably faster backbone degradation was observed for polymer 2 over polymer 1 by NMR and GPC. Nanoparticles were formulated from these novel materials to analyze their oxidation triggered release properties. While nanoparticles formulated from polymer 1 only released 50% of the reporter dye after exposure to 1 mM H(2)O(2) for 26 h, nanoparticles formulated from polymer 2 did so within 10 h and were able to release their cargo selectively in biologically relevant concentrations of H(2)O(2). Nanoparticles formulated from polymer 2 showed a 2-fold enhancement of release upon incubation with activated neutrophils, while controls showed a nonspecific response to ROS producing cells. These polymers represent a novel, biologically relevant, and biocompatible approach to biodegradable H(2)O(2)-triggered release systems that can degrade into small molecules, release their cargo, and should be easily cleared by the body.
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Affiliation(s)
- Caroline de Gracia Lux
- Skaggs School of Pharmacy and Pharmaceutical Sciences, Departments of NanoEngineering and of Materials Science and Engineering, University of California at San Diego, La Jolla, California 92093
| | - Shivanjali Joshi-Barr
- Skaggs School of Pharmacy and Pharmaceutical Sciences, Departments of NanoEngineering and of Materials Science and Engineering, University of California at San Diego, La Jolla, California 92093
| | - Trung Nguyen
- Skaggs School of Pharmacy and Pharmaceutical Sciences, Departments of NanoEngineering and of Materials Science and Engineering, University of California at San Diego, La Jolla, California 92093
| | - Enas Mahmoud
- Skaggs School of Pharmacy and Pharmaceutical Sciences, Departments of NanoEngineering and of Materials Science and Engineering, University of California at San Diego, La Jolla, California 92093
| | - Eric Schopf
- Skaggs School of Pharmacy and Pharmaceutical Sciences, Departments of NanoEngineering and of Materials Science and Engineering, University of California at San Diego, La Jolla, California 92093
| | - Nadezda Fomina
- Skaggs School of Pharmacy and Pharmaceutical Sciences, Departments of NanoEngineering and of Materials Science and Engineering, University of California at San Diego, La Jolla, California 92093
| | - Adah Almutairi
- Skaggs School of Pharmacy and Pharmaceutical Sciences, Departments of NanoEngineering and of Materials Science and Engineering, University of California at San Diego, La Jolla, California 92093
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69
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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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70
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Allen BL, Johnson JD, Walker JP. Hydrolase stabilization via entanglement in poly(propylene sulfide) nanoparticles: stability towards reactive oxygen species. NANOTECHNOLOGY 2012; 23:294009. [PMID: 22743846 DOI: 10.1088/0957-4484/23/29/294009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In the advancement of green syntheses and sustainable reactions, enzymatic biocatalysis offers extremely high reaction rates and selectivity that goes far beyond the reach of chemical catalysts; however, these enzymes suffer from typical environmental constraints, e.g. operational temperature, pH and tolerance to oxidative environments. A common hydrolase enzyme, diisopropylfluorophosphatase (DFPase, EC 3.1.8.2), has demonstrated a pronounced efficacy for the hydrolysis of a variety of substrates for potential toxin remediation, but suffers from the aforementioned limitations. As a means to enhance DFPase's stability in oxidative environments, enzymatic covalent immobilization within the polymeric matrix of poly(propylene sulfide) (PPS) nanoparticles was performed. By modifying the enzyme's exposed lysine residues via thiolation, DFPase is utilized as a comonomer/crosslinker in a mild emulsion polymerization. The resultant polymeric polysulfide shell acts as a 'sacrificial barrier' by first oxidizing to polysulfoxides and polysulfones, rendering DFPase in an active state. DFPase-PPS nanoparticles thus retain activity upon exposure to as high as 50 parts per million (ppm) of hypochlorous acid (HOCl), while native DFPase is observed as inactive at 500 parts per billion (ppb). This trend is also confirmed by enzyme-generated (chloroperoxidase (CPO), EC 1.11.1.10) reactive oxygen species (ROS) including both HOCl (3 ppm) and ClO(2) (100 ppm).
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Affiliation(s)
- Brett L Allen
- FLIR Systems, Inc., 2240 William Pitt Way, Pittsburgh, PA 15238, USA.
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71
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Andrieu J, Kotman N, Maier M, Mailänder V, Strauss WSL, Weiss CK, Landfester K. Live Monitoring of Cargo Release From Peptide-Based Hybrid Nanocapsules Induced by Enzyme Cleavage. Macromol Rapid Commun 2012; 33:248-53. [DOI: 10.1002/marc.201100729] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Revised: 11/24/2011] [Indexed: 12/20/2022]
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72
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Babiuch K, Gottschaldt M, Werz O, Schubert US. Particulate transepithelial drug carriers: barriers and functional polymers. RSC Adv 2012. [DOI: 10.1039/c2ra20726e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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