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Liu X, Chen S, Liu L, Chen Y. Cationic brush hybrid nanoparticles scavenge cell-free DNA to enhance rheumatoid arthritis treatment. Acta Biomater 2023; 170:215-227. [PMID: 37619897 DOI: 10.1016/j.actbio.2023.08.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 08/01/2023] [Accepted: 08/16/2023] [Indexed: 08/26/2023]
Abstract
Abnormally high level of cell-free DNA (cfDNA) is one of the important causes of autoimmune diseases, which aggravate the symptoms of rheumatoid arthritis (RA). Recently, the utilization of cationic polymeric nanoparticles for scavenging cfDNA has emerged as a promising therapeutic strategy for the treatment of RA. However, the intravenous introduction of cationic polymeric nanoparticles into the circulation carries a risk of dissociation, causing toxicity. To realize the potential clinical translation, we employed a series of silica particles grafted with poly(2-(dimethylamino) ethyl methacrylate) (PDMA) (SiNP@PDMA) brush, which possess adjustable PDMA content (100, 200, and 300 degree of polymerization (DP)) and particle size (50, 100, and 200 nm diameter), to selectively scavenge cfDNA in inflamed joint cavity. We demonstrate that the binding affinity for cfDNA, cytotoxicity, circulation time in vivo and retention in the inflamed joint cavity are influenced by the core-shell structure of SiNP@PDMA, ultimately impacting therapeutic efficacy. Among them, SiNP@PDMA with 100 nm size and 200 DP of PDMA exhibit enhanced accumulation and prolonged retention time in inflammatory joint cavity, resulting in superior therapeutic effect. Therefore, in this study, applying the precisely tuning size and cation content of SiNP@PDMA, we demonstrated the factors to matter the therapeutic effect of cationic nanoparticles, which deepened the understanding of the anti-inflammatory therapies based on cfDNA scavenger for RA. STATEMENT OF SIGNIFICANCE: Inspired by the discovery that cfDNA would induce inappropriate immune responses to exacerbate the progress of RA, we innovatively employed SiNP@PDMA as a cfDNA scavenger to inhibit cfDNA-induced inflammation in RA. Increase in the cation content efficiently strengthened the binding between SiNP@PDMA and cfDNA, leading to an improvement in inhibitory effect of inflammation. In addition, we compared the behaviors of 50, 100 and 200 nm SiNP@PDMA in RA symptom suppression, local cfDNA scavenging and inflammation inhibition. The results demonstrated that SiNP100-PDMA200 outperformed other analogues, corresponding to their more favorable distribution in inflammatory articular cavity. Together, this study revealed the structure-property relationship of cfDNA scavengers for further development of safe and effective cfDNA scavenging system.
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Affiliation(s)
- Xingliang Liu
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, China
| | - Shi Chen
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, China
| | - Lixin Liu
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, China; State Key Laboratory of Oncology in Southern China, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, China.
| | - Yongming Chen
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, China; Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China; State Key Laboratory of Oncology in Southern China, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, China.
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2
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Bej R, Dey P, Ghosh S. Disulfide chemistry in responsive aggregation of amphiphilic systems. SOFT MATTER 2020; 16:11-26. [PMID: 31776542 DOI: 10.1039/c9sm01960j] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The dynamic nature of the disulfide bond has enhanced the potential for disulfide based amphiphiles in the emerging biomedical field. Disulfide containing amphiphiles have extensively been used for constructing wide ranging soft nanostructures as potential candidates for delivery of drugs, proteins and genes owing to their degradable nature in the presence of intracellular glutathione (present in a many fold excess compared to the extracellular milieu). This degradable nature of amphiphiles is not only useful to deliver therapeutics but it also eliminates the toxicity issues associated with the carrier after delivery of such therapeutics. Therefore, these bioreducible and biocompatible nano-aggregates inspired researchers to use them as vehicles for therapeutic delivery and as a result the literature of disulfide containing amphiphiles has been intensified. This review article highlights the structural diversity in disulfide containing amphiphilic small molecule and polymeric systems, structural effects on their aqueous aggregation, redox-responsive disassembly and biological applications. Furthermore, the use of disulfide chemistry towards the design of cell penetrating polymers has also been discussed. Finally a brief perspective on some future opportunities of these systems is provided.
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Affiliation(s)
- Raju Bej
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, 700032, India.
| | - Pradip Dey
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, 700032, India.
| | - Suhrit Ghosh
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, 700032, India.
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3
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Elkassih SA, Kos P, Xiong H, Siegwart DJ. Degradable redox-responsive disulfide-based nanogel drug carriers via dithiol oxidation polymerization. Biomater Sci 2019; 7:607-617. [PMID: 30462102 PMCID: PMC7031860 DOI: 10.1039/c8bm01120f] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Stimuli-responsive nanogels are important drug and gene carriers that mediate the controlled release of therapeutic molecules. Herein, we report the synthesis of fully degradable disulfide cross-linked nanogel drug carriers formed by oxidative radical polymerization of 2,2'-(ethylenedioxy)diethanethiol (EDDET) as a monomer with different cross-linkers, including pentaerythritol tetramercaptoacetate (PETMA). Because the poly(EDDET) backbone repeat structure and cross-linking junctions are composed entirely of disulfide bonds, these nanogels specifically degrade to small molecule dithiols intracellularly in response to the reducing agent glutathione present inside of cells. Cross-linked nanogels were synthesized using controlled microfluidic mixing in the presence of a nonionic Pluronic surfactant PLU-127 to increase the nanogel stability. Adjusting the monomer to cross-linker ratio from 5 : 1 to 100 : 1 (mol/mol) tuned the cross-linking density, resulting in swelling ratios from 1.65 to >3. Increasing the amount of stabilizing Pluronic surfactant resulted in a decrease of nanogel diameter, as expected due to increased surface area of the resulting nanogels. The monomer to cross-linker ratio in the feed had no effect on the formed nanogel diameter, providing a way to control cross-linking density with constant nanogel size but tunable drug release kinetics. Nanogels exhibited an entrapment efficiency of up to 75% for loading of Rhodamine B dye. In vitro studies showed low cytotoxicity, quick uptake, and fast degradation kinetics. Due to the ease of synthesis, rapid gelation times, and tunable functionality, these non-toxic and fully degradable nanogels offer potential for use in a variety of drug delivery applications.
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Affiliation(s)
- Sussana A Elkassih
- University of Texas Southwestern Medical Center, Simmons Comprehensive Cancer Center, Department of Biochemistry, Dallas, Texas 75390, USA.
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4
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Rao NV, Ko H, Lee J, Park JH. Recent Progress and Advances in Stimuli-Responsive Polymers for Cancer Therapy. Front Bioeng Biotechnol 2018; 6:110. [PMID: 30159310 PMCID: PMC6104418 DOI: 10.3389/fbioe.2018.00110] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 07/16/2018] [Indexed: 12/13/2022] Open
Abstract
The conventional chemotherapeutic agents, used for cancer chemotherapy, have major limitations including non-specificity, ubiquitous biodistribution, low concentration in tumor tissue, and systemic toxicity. In recent years, owing to their unique features, polymeric nanoparticles have been widely used for the target-specific delivery of drugs in the body. Although polymeric nanoparticles have addressed a number of important issues, the bioavailability of drugs at the disease site, and especially upon cellular internalization, remains a challenge. A polymer nanocarrier system with a stimuli-responsive property (e.g., pH, temperature, or redox potential), for example, would be amenable to address the intracellular delivery barriers by taking advantage of pH, temperature, or redox potentials. With a greater understanding of the difference between normal and pathological tissues, there is a highly promising role of stimuli-responsive nanocarriers for drug delivery in the future. In this review, we highlighted the recent advances in different types of stimuli-responsive polymers for drug delivery.
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Affiliation(s)
- N. Vijayakameswara Rao
- School of Chemical Engineering, College of Engineering, Sungkyunkwan University, Suwon, South Korea
| | - Hyewon Ko
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Suwon, South Korea
| | - Jeongjin Lee
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Suwon, South Korea
| | - Jae Hyung Park
- School of Chemical Engineering, College of Engineering, Sungkyunkwan University, Suwon, South Korea
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Suwon, South Korea
- Biomedical Institute for Convergence at SKKU, Sungkyunkwan University, Suwon, South Korea
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5
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Kocak G, Solmaz G, Bütün V. A New Approach for the Synthesis of pH-Responsive Cross-Linked Micelles from a Poly(glycidyl methacrylate)-Based Functional Copolymer. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600326] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Gökhan Kocak
- Department of Chemistry; Eskisehir Osmangazi University; 26480 Eskisehir Turkey
| | - Gökhan Solmaz
- Department of Polymer Science and Technology; Eskisehir Osmangazi University; 26480 Eskisehir Turkey
| | - Vural Bütün
- Department of Chemistry; Eskisehir Osmangazi University; 26480 Eskisehir Turkey
- Department of Polymer Science and Technology; Eskisehir Osmangazi University; 26480 Eskisehir Turkey
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Kampmann AL, Luksin M, Pretzer I, Weberskirch R. Formation of Well-Defined Polymer Particles in the Sub-100 nm Size Range by Using Amphiphilic Block Copolymer Surfactants and a Microemulsion Approach. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600108] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Anne-Larissa Kampmann
- Faculty of Chemistry and Chemical Biology, TU Dortmund; Otto-Hahn Str. 6 44227 Dortmund Germany
| | - Michael Luksin
- Faculty of Chemistry and Chemical Biology, TU Dortmund; Otto-Hahn Str. 6 44227 Dortmund Germany
| | - Irene Pretzer
- Faculty of Chemistry and Chemical Biology, TU Dortmund; Otto-Hahn Str. 6 44227 Dortmund Germany
| | - Ralf Weberskirch
- Faculty of Chemistry and Chemical Biology, TU Dortmund; Otto-Hahn Str. 6 44227 Dortmund Germany
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7
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Zhou H, Wang X, Tang J, Yang YW. Tuning the growth, crosslinking, and gating effect of disulfide-containing PGMAs on the surfaces of mesoporous silica nanoparticles for redox/pH dual-controlled cargo release. Polym Chem 2016. [DOI: 10.1039/c6py00045b] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
PGMA brushes grown on MSN surfaces via SI-ATRP could be cross-linked by cystamine or through a KI/H2O2 (30%) assisted disulfide bond exchange to realize gating effects for redox/pH dual-controlled cargo release.
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Affiliation(s)
- Hang Zhou
- College of Chemistry
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC)
- Jilin University
- Changchun 130012
| | - Xin Wang
- College of Chemistry
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC)
- Jilin University
- Changchun 130012
| | - Jun Tang
- College of Chemistry
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC)
- Jilin University
- Changchun 130012
| | - Ying-Wei Yang
- College of Chemistry
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC)
- Jilin University
- Changchun 130012
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8
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Chen L, Chen F, Zhao M, Zhu X, Ke C, Yu J, Yan Z, Zhang F, Sun Y, Chen D, Jiang C, Zhao X, Gao Y, Guo S, Li W. A redox-sensitive micelle-like nanoparticle self-assembled from amphiphilic adriamycin-human serum albumin conjugates for tumor targeted therapy. BIOMED RESEARCH INTERNATIONAL 2015; 2015:987404. [PMID: 26075280 PMCID: PMC4444569 DOI: 10.1155/2015/987404] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 03/26/2015] [Accepted: 04/07/2015] [Indexed: 02/01/2023]
Abstract
The application of chemotherapeutic drug adriamycin (ADR) in cancer therapy is limited by its side effects like high toxicity and insolubility. Nanomedicine offers new hope for overcoming the shortcomings. But how to increase in vivo stability and to control intracellular drug release is a key issue for nano-based formulations. Herein, the hydrophobic ADR was successfully linked to the biocompatible human serum albumin (HSA) by disulfide bond 3-(2-pyridyldithio) propionyl hydrazide (PDPH), resulting in amphiphilic HSA-ADR. The novel ADR-HSA micellar NPs which were thus assembled exhibited a well-defined stable core shell structure with glutathione (GSH) sensitive linkers. The stable PDPH linkers at extracellular level were broken by GSH at intracellular level with a controlled ADR release profile. The in vitro cytotoxicity against gastric cancer cells (NCI-N87) was obviously enhanced by such redox-sensitive ADR-HSA NPs. Additionally, as observed by IVIS Lumina II Imaging System (Xenogen), the intratumor accumulation of ADR-HSA NPs was much higher than that of HSA/ADR NPs due to its high stability. Consequently, the in vivo tumor inhibition was significantly promoted after intravenous administration to the Balb/c nude mice bearing gastric tumors. These in vitro/vivo results indicated that disulfide-bond-containing ADR-HSA NPs were an effective nanodrug delivery system for cancer therapy.
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Affiliation(s)
- Lin Chen
- Department of Medical Oncology, East Hospital, Tongji University, 150 Jimo Road, Shanghai 200120, China
| | - Feng Chen
- Department of Cardiology, Changhai Hospital, The Second Military Medical University, Shanghai 200433, China
| | - Mengxin Zhao
- International Joint Cancer Institute, The Second Military Medical University, Shanghai 200433, China
| | - Xiandi Zhu
- International Joint Cancer Institute, The Second Military Medical University, Shanghai 200433, China
| | - Changhong Ke
- International Joint Cancer Institute, The Second Military Medical University, Shanghai 200433, China
| | - Jiangming Yu
- Department of Orthopaedics, Changzheng Hospital, The Second Military Medical University, No. 415 Fengyang Road, Shanghai 200003, China
| | - Zhiqiang Yan
- Institute of Biomedical Engineering and Technology, Shanghai Engineering Research Center of Molecular Therapeutics, Shanghai 200062, China
| | - Fulei Zhang
- International Joint Cancer Institute, The Second Military Medical University, Shanghai 200433, China
| | - Yun Sun
- International Joint Cancer Institute, The Second Military Medical University, Shanghai 200433, China
| | - Di Chen
- International Joint Cancer Institute, The Second Military Medical University, Shanghai 200433, China
| | - Cheng Jiang
- International Joint Cancer Institute, The Second Military Medical University, Shanghai 200433, China
| | - Xianxian Zhao
- Department of Cardiology, Changhai Hospital, The Second Military Medical University, Shanghai 200433, China
| | - Yong Gao
- Department of Medical Oncology, East Hospital, Tongji University, 150 Jimo Road, Shanghai 200120, China
| | - Shangjing Guo
- International Joint Cancer Institute, The Second Military Medical University, Shanghai 200433, China
| | - Wei Li
- International Joint Cancer Institute, The Second Military Medical University, Shanghai 200433, China
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9
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Kumar A, Lale SV, Mahajan S, Choudhary V, Koul V. ROP and ATRP Fabricated Dual Targeted Redox Sensitive Polymersomes Based on pPEGMA-PCL-ss-PCL-pPEGMA Triblock Copolymers for Breast Cancer Therapeutics. ACS APPLIED MATERIALS & INTERFACES 2015; 7:9211-9227. [PMID: 25838044 DOI: 10.1021/acsami.5b01731] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To minimize cardiotoxicity and to increase the bioavailability of doxorubicin, polymersomes based on redox sensitive amphiphilic triblock copolymer poly(polyethylene glycol methacrylate)-poly(caprolactone)-s-s-poly(caprolactone)-poly(polyethylene glycol methacrylate) (pPEGMA-PCL-ss-PCL-pPEGMA) with disulfide linkage were designed and developed. The polymers were synthesized by ring opening polymerization (ROP) of ε-caprolactone followed by atom transfer radical polymerization (ATRP) of PEGMA. The triblock copolymers demonstrated various types of nanoparticle morphologies by varying hydrophobic/hydrophilic content of polymer blocks, with PEGMA content of ∼18% in the triblock copolymer leading to the formation of polymersomes in the size range ∼150 nm. High doxorubicin loading content of ∼21% was achieved in the polymersomes. Disulfide linkages were incorporated in the polymeric backbone to facilitate degradation of the nanoparticles by the intracellular tripeptide glutathione (GSH), leading to intracellular drug release. Release studies showed ∼59% drug release in pH 5.5 in the presence of 10 mM GSH, whereas only ∼19% was released in pH 7.4. In cellular uptake studies, dual targeted polymersomes showed ∼22-fold increase in cellular uptake efficiency in breast cancer cell lines (BT474 and MCF-7) as compared to nontargeted polymersomes with higher apoptosis rates. In vivo studies on Ehrlich's ascites tumor (EAT) bearing Swiss albino mouse model showed ∼85% tumor regression as compared to free doxorubicin (∼42%) without any significant cardiotoxicity associated with doxorubicin. The results indicate enhanced antitumor efficacy of the redox sensitive biocompatible nanosystem and shows promise as a potential drug nanocarrier in cancer therapeutics.
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Affiliation(s)
- Arun Kumar
- §Biomedical Engineering Unit, All India Institute of Medical Sciences, AIIMS, New Delhi 110029, India
| | - Shantanu V Lale
- §Biomedical Engineering Unit, All India Institute of Medical Sciences, AIIMS, New Delhi 110029, India
| | - Shveta Mahajan
- §Biomedical Engineering Unit, All India Institute of Medical Sciences, AIIMS, New Delhi 110029, India
| | | | - Veena Koul
- §Biomedical Engineering Unit, All India Institute of Medical Sciences, AIIMS, New Delhi 110029, India
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10
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Lv LP, Zhao Y, Landfester K, Crespy D. Chemical encoding of amphiphilic copolymers for a dual controlled release from their assemblies. Polym Chem 2015. [DOI: 10.1039/c4py01159g] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Amphiphilic random copolymers are designed to bear a corrosion inhibitor as cleavable side group, which can be released upon activation by chemical reduction.
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Affiliation(s)
- Li-Ping Lv
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
| | - Yi Zhao
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
| | | | - Daniel Crespy
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
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11
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Cheng W, Gu L, Ren W, Liu Y. Stimuli-responsive polymers for anti-cancer drug delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 45:600-8. [DOI: 10.1016/j.msec.2014.05.050] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 05/23/2014] [Indexed: 12/11/2022]
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12
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Liu X, He J, Hu D, Niu Y, Xia X, Lu Y. Facile synthesis of a reduction-responsive amphiphilic triblock polymer via a selective thiol–disulfide exchange reaction. RSC Adv 2014. [DOI: 10.1039/c4ra07792j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
A reduction-responsive amphiphilic triblock polymer was prepared via polycondensation between a dithiol and dipyridyl disulfide, followed by a selective thiol–disulfide exchange reaction.
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Affiliation(s)
- Xiangyu Liu
- College of Chemistry & Chemical Engineering
- Hunan University
- Changsha 410082, China
| | - Jingwen He
- College of Chemistry & Chemical Engineering
- Hunan University
- Changsha 410082, China
| | - Ding Hu
- College of Chemistry & Chemical Engineering
- Hunan University
- Changsha 410082, China
| | - Yile Niu
- College of Chemistry & Chemical Engineering
- Hunan University
- Changsha 410082, China
| | - Xinnian Xia
- College of Chemistry & Chemical Engineering
- Hunan University
- Changsha 410082, China
| | - Yanbing Lu
- College of Chemistry & Chemical Engineering
- Hunan University
- Changsha 410082, China
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13
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Engelhardt N, Ernst A, Kampmann AL, Weberskirch R. Synthesis and Characterization of Surface Functional Polymer Nanoparticles by a Bottom-Up Approach from Tailor-Made Amphiphilic Block Copolymers. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300573] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Nadine Engelhardt
- TU Dortmund, Fakultät für Chemie und Chemische Biologie; Otto-Hahn Straße 6 44227 Dortmund Germany
| | - Andrea Ernst
- TU Dortmund, Fakultät für Chemie und Chemische Biologie; Otto-Hahn Straße 6 44227 Dortmund Germany
| | - Anne-Larissa Kampmann
- TU Dortmund, Fakultät für Chemie und Chemische Biologie; Otto-Hahn Straße 6 44227 Dortmund Germany
| | - Ralf Weberskirch
- TU Dortmund, Fakultät für Chemie und Chemische Biologie; Otto-Hahn Straße 6 44227 Dortmund Germany
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14
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Photocrosslinkable Star Polymers via RAFT-Copolymerizations with N-Ethylacrylate-3,4-dimethylmaleimide. Polymers (Basel) 2013. [DOI: 10.3390/polym5020706] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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15
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Cui C, Xue YN, Wu M, Zhang Y, Yu P, Liu L, Zhuo RX, Huang SW. Cellular uptake, intracellular trafficking, and antitumor efficacy of doxorubicin-loaded reduction-sensitive micelles. Biomaterials 2013; 34:3858-69. [DOI: 10.1016/j.biomaterials.2013.01.101] [Citation(s) in RCA: 140] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Accepted: 01/30/2013] [Indexed: 01/15/2023]
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16
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Liu GY, Liu XS, Wang SS, Chen CJ, Ji J. Biomimetic polymersomes as carriers for hydrophilic quantum dots. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:557-562. [PMID: 22074119 DOI: 10.1021/la2033669] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
For polymersomes to achieve their potential as effective delivery vehicles, they must efficiently encapsulate therapeutic agents into either the aqueous interior or the hydrophobic membrane. In this study, cell membrane-mimetic polymersomes were prepared from amphiphilic poly(D,L-lactide)-b-poly(2-methacryloyloxyethylphosphorylcholine) (PLA-b-PMPC) diblock copolymers and were used as encapsulation devices for water-soluble molecules. Thioalkylated zwitterionic phosphorylcholine protected quantum dots (PC@QDs) were chosen as hydrophilic model substrates and successfully encapsulated into the aqueous polymersome interior, as evidenced by transmission electron microscopy (TEM) and flow cytometry. In addition, we also found a fraction of the PC@QDs were bound to both the external and internal surfaces of the polymersome. This interesting immobilization might be due to the ion-pair interactions between the phosphorylcholine groups on the PC@QDs and polymersomes. The experimental encapsulation results support a mechanism of PLA-b-PMPC polymersome formation in which PLA-b-PMPC copolymer chains first form spherical micelles, then worm-like micelles, and finally disk-like micelles which close up to form polymersomes.
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Affiliation(s)
- Gong-Yan Liu
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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Wang K, Luo GF, Liu Y, Li C, Cheng SX, Zhuo RX, Zhang XZ. Redox-sensitive shell cross-linked PEG–polypeptide hybrid micelles for controlled drug release. Polym Chem 2012. [DOI: 10.1039/c2py00600f] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Keten S, Chou CC, van Duin ACT, Buehler MJ. Tunable nanomechanics of protein disulfide bonds in redox microenvironments. J Mech Behav Biomed Mater 2011; 5:32-40. [PMID: 22100077 DOI: 10.1016/j.jmbbm.2011.08.017] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Revised: 08/06/2011] [Accepted: 08/09/2011] [Indexed: 02/06/2023]
Abstract
Disulfide bonds are important chemical cross-links that control the elasticity of fibrous protein materials such as hair, feather, wool and gluten in breadmaking dough. Here we present a novel computational approach using the first-principles-based ReaxFF reactive force field and demonstrate that this approach can be used to show that the fracture strength of disulfide bonds is decreased under the presence of reducing agents, due to a loss of cross-link stability controlled by the chemical microenvironment. Simulations in explicit solvents and dithiothreitol (DTT) indicate an intermediate step involving weakened elongated bonds, illustrating the tunability of the elasticity, rupture mechanism and strength of proteins. We provide a mechanistic insight into the fracture mechanism of protein disulfide bonds and illustrate the importance of the redox microenvironment, where factors such as accessibility, mechanical strain and local redox potential govern the dominating rupture mechanism and location. The method used here provides a general computational protocol for studying mechanochemical fracture of large-scale protein materials concurrently with experimental efforts.
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Affiliation(s)
- Sinan Keten
- Laboratory for Atomistic and Molecular Mechanics, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Room 1-235A&B, Cambridge, MA 02139, United States
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19
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Liu GY, Lv LP, Chen CJ, Hu XF, Ji J. Biocompatible Poly(D
,L
-lactide)-block-
Poly(2-methacryloyloxyethylphosphorylcholine) Micelles for Drug Delivery. MACROMOL CHEM PHYS 2011. [DOI: 10.1002/macp.201000735] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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