51
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Liu L, Rui L, Gao Y, Zhang W. Self-assembly and disassembly of a redox-responsive ferrocene-containing amphiphilic block copolymer for controlled release. Polym Chem 2015. [DOI: 10.1039/c4py01289e] [Citation(s) in RCA: 103] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The synthesis and self-assembly of ferrocene-containing block copolymers PEG-b-PMAEFc, and the encapsulation and redox-responsive release of a model molecule (rhodamine B) upon external redox stimuli (H2O2).
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Affiliation(s)
- Lichao Liu
- Shanghai Key Laboratory of Advanced Polymeric Materials
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Leilei Rui
- Shanghai Key Laboratory of Advanced Polymeric Materials
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Yun Gao
- Shanghai Key Laboratory of Advanced Polymeric Materials
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Weian Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
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52
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Cao W, Gu Y, Li T, Xu H. Ultra-sensitive ROS-responsive tellurium-containing polymers. Chem Commun (Camb) 2015; 51:7069-71. [DOI: 10.1039/c5cc01779c] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Tellurium-containing polymer micelles are responsive to 100 μM H2O2 or 2 Gy gamma radiation, enabling the development of ultra-sensitive ROS-eliminating materials.
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Affiliation(s)
- Wei Cao
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Yuwei Gu
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Tianyu Li
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Huaping Xu
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
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53
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Ren H, Huang Z, Yang H, Xu H, Zhang X. Controlling the Reactivity of the SeSe Bond by the Supramolecular Chemistry of Cucurbituril. Chemphyschem 2014; 16:523-7. [DOI: 10.1002/cphc.201402840] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Indexed: 01/13/2023]
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54
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Wan H, Zhang Y, Liu Z, Xu G, Huang G, Ji Y, Xiong Z, Zhang Q, Dong J, Zhang W, Zou H. Facile fabrication of a near-infrared responsive nanocarrier for spatiotemporally controlled chemo-photothermal synergistic cancer therapy. NANOSCALE 2014; 6:8743-8753. [PMID: 24954159 DOI: 10.1039/c4nr01044b] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Remote-controlled nanocarriers for drug delivery are of great promise to provide timely, sensitive and spatiotemporally selective treatments for cancer therapy. Due to convenient and precise manipulation, deep penetration through tissues and excellent biocompatibility, near-infrared (NIR) irradiation is a preferred external stimulus for triggering the release of loaded drugs. In this work, for spatiotemporally controlled chemo-photothermal synergistic cancer therapy, a NIR responsive nanocarrier was fabricated using reduced graphene oxide nanosheets (rNGO) decorated with mesoporous silica shell and the subsequent functionalization of the thermoresponsive polymer brushes (pNIPAM-co-pAAm) at the outlet of the silica pore channels. rNGO, which combined with the mesoporous silica shell provide a high loading capacity for anticancer drugs (doxorubicin, DOX), was assigned to sense NIR irradiation for the manipulation of pNIPAM-co-pAAm valve to control the diffusion of loaded DOX. Under NIR irradiation, rNGO would generate heat, which could not only elevate the surrounding temperature over the low critical solution temperature (LCST) of pNIPAM-co-pAAm to open the thermoresponsive polymer valve and promote the diffusion of DOX, but also kill the cancer cells through the hypothermia effect. By manipulating NIR irradiation, the nanocarrier exhibited efficiently controlled release of loaded DOX both in the buffer and in living HeLa cells (the model cancer cells), providing powerful and site-targeted treatments, which can be attributed to synergistic effects of chemo-photothermal therapy. To sum up, this novel nanocarrier is an excellent drug delivery platform in remote-controlled chemo-photothermal synergistic cancer therapy via NIR irradiation.
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Affiliation(s)
- Hao Wan
- CAS Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China.
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55
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Zeng L, Li Y, Li T, Cao W, Yi Y, Geng W, Sun Z, Xu H. Selenium-Platinum Coordination Compounds as Novel Anticancer Drugs: Selectively Killing Cancer Cells via a Reactive Oxygen Species (ROS)-Mediated Apoptosis Route. Chem Asian J 2014; 9:2295-302. [DOI: 10.1002/asia.201402256] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Indexed: 12/13/2022]
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56
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Wang L, Cao W, Yi Y, Xu H. Dual redox responsive coassemblies of diselenide-containing block copolymers and polymer lipids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:5628-5636. [PMID: 24787243 DOI: 10.1021/la501054z] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A general approach is reported to fabricate a stimuli responsive system via coassembly of diselenide-containing block copolymers with polymer lipids, which integrates the stimuli-responsiveness of diselenide chemistry and the biocompatibility of polymer lipids. By using dynamic light scattering, transmission electron microscopy, and zeta potential analyzer, coassembly behavior of these two kinds of polymers and responsiveness of coassemblies have been investigated. These coassemblies can exhibit redox-responsiveness inheriting from the diselenide-containing block copolymers. In the presence of low concentration of hydrogen peroxide or glutathione, the coassemblies can be disrupted.
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Affiliation(s)
- Lu Wang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University , Beijing 100084, People's Republic of China
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57
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Ji S, Cao W, Yu Y, Xu H. Dynamic Diselenide Bonds: Exchange Reaction Induced by Visible Light without Catalysis. Angew Chem Int Ed Engl 2014; 53:6781-5. [DOI: 10.1002/anie.201403442] [Citation(s) in RCA: 201] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 04/18/2014] [Indexed: 11/07/2022]
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58
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Ji S, Cao W, Yu Y, Xu H. Dynamic Diselenide Bonds: Exchange Reaction Induced by Visible Light without Catalysis. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201403442] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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59
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He H, Lo P, Ng DKP. A Glutathione‐Activated Phthalocyanine‐Based Photosensitizer for Photodynamic Therapy. Chemistry 2014; 20:6241-5. [DOI: 10.1002/chem.201400001] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Revised: 03/18/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Hui He
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong (P. R. China), Fax: (+852) 2603 5057
| | - Pui‐Chi Lo
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong (P. R. China), Fax: (+852) 2603 5057
| | - Dennis K. P. Ng
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong (P. R. China), Fax: (+852) 2603 5057
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60
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Cao W, Gu Y, Meineck M, Li T, Xu H. Tellurium-Containing Polymer Micelles: Competitive-Ligand-Regulated Coordination Responsive Systems. J Am Chem Soc 2014; 136:5132-7. [DOI: 10.1021/ja500939m] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Wei Cao
- Key Lab of Organic Optoelectronics
and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yuwei Gu
- Key Lab of Organic Optoelectronics
and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Myriam Meineck
- Key Lab of Organic Optoelectronics
and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Tianyu Li
- Key Lab of Organic Optoelectronics
and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Huaping Xu
- Key Lab of Organic Optoelectronics
and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
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61
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Feng A, Yuan J. Smart Nanocontainers: Progress on Novel Stimuli-Responsive Polymer Vesicles. Macromol Rapid Commun 2014; 35:767-79. [DOI: 10.1002/marc.201300866] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2013] [Revised: 12/23/2013] [Indexed: 01/15/2023]
Affiliation(s)
- Anchao Feng
- Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University; Beijing 100084 P. R. China
| | - Jinying Yuan
- Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University; Beijing 100084 P. R. China
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62
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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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63
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Ren H, Wu Y, Li Y, Cao W, Sun Z, Xu H, Zhang X. Visible-light-induced disruption of diselenide-containing layer-by-layer films: toward combination of chemotherapy and photodynamic therapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 9:3981-3986. [PMID: 23737377 DOI: 10.1002/smll.201300628] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Revised: 04/12/2013] [Indexed: 06/02/2023]
Abstract
A photoresponsive polyelectrolyte multilayer film containing a diselenide functional group is fabricated using an unconventional layer-by-layer method. The polycation backbone is constructed through copolymerization of di-(1-hydroxylundecyl) diselenide and 1,4-bis(2-hydroxyethyl)piperazine with 2,4-diisocyanatotoluene. A common polyanion poly(styrene sulfonate) is selected as the polyanion. The obtained film can be gradually disrupted under the irradiation of mild visible light, and this process can be monitored with UV-vis spectroscopy. The residue of the film is estimated to be 17% after 5 h of irradiation. The intensity of the visible light can be as low as 50 mW cm⁻², which is even weaker than the sunlight. The cytotoxicity of the building blocks is evaluated in MTT assays using human hepatic cell line (L-02), and the results are satisfactory. Further tests show that cells can grow in a regular manner on this film, indicating good biocompatibility. In addition, the film can be used to achieve cargo loading and controlled release. Considering that light can not only trigger controlled release but also act as part of the therapy itself (photodynamic therapy), this system shows hope for further development into a platform for the combination of chemotherapy and photodynamic therapy, especially for applications concerning skin.
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Affiliation(s)
- Huifeng Ren
- Key Laboratory of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, PR China
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64
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Cao W, Gu Y, Meineck M, Xu H. The Combination of Chemotherapy and Radiotherapy towards More Efficient Drug Delivery. Chem Asian J 2013; 9:48-57. [DOI: 10.1002/asia.201301294] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Indexed: 11/11/2022]
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65
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Sun T, Jin Y, Qi R, Peng S, Fan B. Post-Assembly of Oxidation-Responsive Amphiphilic Triblock Polymer Containing a Single Diselenide. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300579] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Tongbing Sun
- Chengdu Institute of Organic Chemistry, Chinese Academy of Science, Center of Polymer Science and Technology; Chengdu 610041 People's Republic of China
- University of Chinese Academy of Sciences; No.19A Yuquan Road Beijing 100049 People's Republic of China
| | - Yong Jin
- National Engineering Laboratory for Clean Technology of Leather Manufacture; Sichuan University; Chengdu 610065 People's Republic of China
- Key Laboratory of Leather Chemistry and Engineering (Sichuan University), Ministry of Education; Chengdu 610065 People's Republic of China
| | - Rui Qi
- Chengdu Institute of Organic Chemistry, Chinese Academy of Science, Center of Polymer Science and Technology; Chengdu 610041 People's Republic of China
- University of Chinese Academy of Sciences; No.19A Yuquan Road Beijing 100049 People's Republic of China
| | - Shaojun Peng
- Chengdu Institute of Organic Chemistry, Chinese Academy of Science, Center of Polymer Science and Technology; Chengdu 610041 People's Republic of China
- University of Chinese Academy of Sciences; No.19A Yuquan Road Beijing 100049 People's Republic of China
| | - Baozhu Fan
- Chengdu Institute of Organic Chemistry, Chinese Academy of Science, Center of Polymer Science and Technology; Chengdu 610041 People's Republic of China
- University of Chinese Academy of Sciences; No.19A Yuquan Road Beijing 100049 People's Republic of China
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66
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Zhao Z, Zhang Z, Chen L, Cao Y, He C, Chen X. Biodegradable stereocomplex micelles based on dextran-block-polylactide as efficient drug deliveries. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:13072-13080. [PMID: 24112037 DOI: 10.1021/la402890k] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Biodegradable stereocomplex micelles (SCMs) based on amphiphilic dextran-block-polylactide (Dex-b-PLA) were designed and used for efficient intracellular drug deliveries. The Dex-b-PLA copolymers were successfully synthesized by click reaction. The structures of the resultant copolymers were verified by (1)H NMR and FT-IR spectra. The formation of stable micelles through self-assembly driven by the stereocomplexation between enantiomeric l- and d-PLA blocks was characterized by transmission electron microscopy (TEM), dynamic laser scattering (DLS), and fluorescence techniques. It was interesting to observe that the SCMs showed lower critical micelle concentration values (CMCs) because of the stereocomplex interaction between PLLA and PDLA. Differential scanning calorimetry (DSC) and X-ray diffraction (XRD) analysis provided information on the thermal and crystal properties of the copolymers and SCMs. The improved stability of SCMs should be attractive for intracellular drug delivery. Thus, a model anticancer drug doxorubicin (DOX) was loaded into micelles, and the in vitro drug release in was also studied. The release kinetics of DOX showed DOX-loaded SCMs exhibited slower DOX release. Confocal laser scanning microscopy (CLSM) and flow cytometry studies also showed that the DOX-loaded SCMs exhibited a slower drug release behavior. Meanwhile, the MTT assay demonstrated that DOX-loaded SCMs show lower cellular proliferation inhibition against HepG2. In sum, the micelles through self-assembly driven by stereocomplex interaction would have great potential to be used as stable delivery vehicles for pharmaceutical and biomedical applications.
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Affiliation(s)
- Ziwei Zhao
- Department of Chemistry, Northeast Normal University , Changchun 130024, P. R. China
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67
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Liu K, Kang Y, Wang Z, Zhang X. 25th anniversary article: reversible and adaptive functional supramolecular materials: "noncovalent interaction" matters. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:5530-5548. [PMID: 24038309 DOI: 10.1002/adma201302015] [Citation(s) in RCA: 212] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2013] [Revised: 06/26/2013] [Indexed: 06/02/2023]
Abstract
Supramolecular materials held together by noncovalent interactions, such as hydrogen bonding, host-guest interactions, and electrostatic interactions, have great potential in material science. The unique reversibility and adaptivity of noncovalent intreractions have brought about fascinating new functions that are not available by their covalent counterparts and have greatly enriched the realm of functional materials. This review article aims to highlight the very recent and important progresses in the area of functional supramoleuclar materials, focusing on adaptive mechanical materials, smart sensors with enhanced selectivity, soft luminescent and electronic nanomaterials, and biomimetic and biomedical materials with tailored structures and functions. We cannot write a complete account of all the interesting work in this area in one article, but we hope that it can in a way reflect the current situation and future trends in this prosperously developing area of functional supramolecular materials.
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Affiliation(s)
- Kai Liu
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, PR China
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68
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Xu H, Chen D, Wang S, Zhou Y, Sun J, Zhang W, Zhang X. Macromolecular self-assembly and nanotechnology in China. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2013; 371:20120305. [PMID: 24000357 DOI: 10.1098/rsta.2012.0305] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Macromolecular self-assembly refers to the assembly of synthetic polymers, biomacromolecules and supra-molecular polymers. Through macromolecular self-assembly, the fabrication of ordered structures at different scales, the control of the dynamic assembly process and the integrations of advanced functions can be realized. Macromolecular self-assembly and nanotechnology research in China has developed rapidly, from the early periods of follow-up at low to high level and progress into a stage of innovation and creation. This review selects some representative progresses achieved recently, aiming to reflect the current status of macromolecular self-assembly and nanotechnology research in China.
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Affiliation(s)
- Huaping Xu
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China.
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69
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Xu H, Cao W, Zhang X. Selenium-containing polymers: promising biomaterials for controlled release and enzyme mimics. Acc Chem Res 2013; 46:1647-58. [PMID: 23581522 DOI: 10.1021/ar4000339] [Citation(s) in RCA: 402] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Although researchers have made great progress in the development of responsive polymeric materials for controlled drug release or diagnostics over the last 10 years, therapeutic results still lag behind expectations. The development of special materials that respond to physiological relevant concentrations, typically within the micromolar or nanomolar concentration regime, remains challenging. Therefore, researchers continue to pursue new biomaterials with unique properties and that respond to mild biochemical signals or biomarkers. Selenium is an essential element in human body with potential antioxidant properties. Because of selenium's electronegativity and atomic radius, selenium-containing compounds exhibit unique bond energy (C-Se bond 244 kJ mol⁻¹; Se-Se bond 172 kJ mol⁻¹). These values give the C-Se or Se-Se covalent bonds dynamic character and make them responsive to mild stimuli. Therefore, selenium-containing polymers can disassemble in response to changes under physiological relevant conditions. This property makes them a promising biomaterial for controlled release of drugs or synthetic enzyme mimics. Until recently, few researchers have looked at selenium-containing polymers as novel biomaterials. In this Account, we summarize our recent research on selenium-containing polymers and show their potential application as mild-responsive drug delivery vehicles and artificial enzymes. We begin by reviewing the current state of the art in the synthesis of selenium-containing main chain block copolymers. We highlight the dual redox and gamma-irradiation behaviors of diselenide-containing block copolymers assemblies, discussing the possibility of their use in a combination of chemotherapy and actinotherapy. We also describe the coordination of platinum with monoselenide containing block copolymers. Such structures offer the possibility of fabricating multidrug systems for cooperative chemotherapy. In addition, we summarize the methods for the covalent and noncovalent preparation of selenium-containing polymers with side chains, which highlight the opportunity to reversibly tune the amphiphilicity of selenium-containing polymers. Finally, we present strategies for the design of highly efficient selenium-containing dendritic polymers that can mimic enzymes. This field is still in its infancy period, and further research can only be limited by our imagination.
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Affiliation(s)
- Huaping Xu
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Wei Cao
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Xi Zhang
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
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70
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Zhang A, Zhang Z, Shi F, Xiao C, Ding J, Zhuang X, He C, Chen L, Chen X. Redox-sensitive shell-crosslinked polypeptide-block-polysaccharide micelles for efficient intracellular anticancer drug delivery. Macromol Biosci 2013; 13:1249-58. [PMID: 23840011 DOI: 10.1002/mabi.201300175] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2013] [Revised: 04/24/2013] [Indexed: 12/27/2022]
Abstract
Redox-responsive SCMs based on amphiphilic PBLG-b-dextran with good biocompatibility are synthesized and used for efficient intracellular drug delivery. The molecular structures and SCMs characteristics are characterized by (1) H NMR, FT-IR, TEM, and DLS. The hydrodynamic radius of SCMs increases gradually in PBS due to the cleavage of disulfide bond in micellar shell caused by the presence of GSH. The encapsulation efficiency and release kinetics of DOX are investigated. The fastest DOX release is observed under intracellular-mimicking reductive environments. An MTT assay demonstrates that DOX-loaded SCMs show higher cellular proliferation inhibition against GSH-OEt pretreated HeLa and HepG2 than that of the non-pretreated and BSO-pretreated ones.
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Affiliation(s)
- Aiping Zhang
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
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71
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Miao X, Cao W, Zheng W, Wang J, Zhang X, Gao J, Yang C, Kong D, Xu H, Wang L, Yang Z. Switchable Catalytic Activity: Selenium-Containing Peptides with Redox-Controllable Self-Assembly Properties. Angew Chem Int Ed Engl 2013; 52:7781-5. [DOI: 10.1002/anie.201303199] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Indexed: 11/06/2022]
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72
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Miao X, Cao W, Zheng W, Wang J, Zhang X, Gao J, Yang C, Kong D, Xu H, Wang L, Yang Z. Switchable Catalytic Activity: Selenium-Containing Peptides with Redox-Controllable Self-Assembly Properties. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303199] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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73
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Yi Y, Xu H, Wang L, Cao W, Zhang X. A new dynamic covalent bond of Se-N: towards controlled self-assembly and disassembly. Chemistry 2013; 19:9506-10. [PMID: 23754765 DOI: 10.1002/chem.201301446] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Indexed: 11/07/2022]
Abstract
A new kind of Se-N dynamic covalent bond has been found that can form between the Se atom of a phenylselenyl halogen species and the N atom of a pyridine derivative, such as polystyrene-b-poly(4-vinylpyridine). This Se-N dynamic covalent bond can be reversibly and rapidly formed or cleaved under acidic or basic conditions, respectively. Furthermore, the bond can be dynamically cleaved by heating or treatment with stronger electron-donating pyridine derivatives. The multiple responses of Se-N bond to external stimuli has enriched the existing family of dynamic covalent bonds. It can be used for controlled and reversible self-assembly and disassembly, which may find potential applications in a number of areas, including self-healing materials and responsive assemblies.
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Affiliation(s)
- Yu Yi
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P.R. China
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74
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Mondal T, Dan K, Deb J, Jana SS, Ghosh S. Hydrogen-bonding-induced chain folding and vesicular assembly of an amphiphilic polyurethane. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:6746-6753. [PMID: 23663195 DOI: 10.1021/la401008y] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We have reported synthesis and vesicular assembly of a novel amphiphilic polyurethane with hydrophobic backbone and hydrophilic pendant carboxylic acid groups which were periodically grafted to the backbone via a tertiary amine group. In aqueous medium the polymer chain adopted a folded conformation which was stabilized by intrachain H-bonding among the urethane groups. Such a model was supported by concentration and solvent-dependent FT-IR, powder XRD, and urea-mediated "denaturation" experiments. Folded polymer chains further formed vesicular assembly which was probed by dynamic light scattering, TEM, AFM, SEM, and fluorescence microscopic studies, and dye encapsulation experiments. pH-dependent DLS and fluorescence microscopic studies revealed stable polymersome in entire tested pH window of 3.5-11.0. Zeta potential measurements showed a negatively charged surface in basic pH while a charge-neutral surface in neutral and acidic pH. MTT assay with CHO cell line indicated good cell viability.
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Affiliation(s)
- Tathagata Mondal
- Polymer Science Unit, Indian Association for the Cultivation of Science, Kolkata 700032, India
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75
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Jeong K, Lee YD, Park S, Lee E, Lim CK, Lee KE, Jeon H, Kim J, Chan Kwon I, Park CR, Kim S. Poly(oxyethylene sugaramide)s: unprecedented multihydroxyl building blocks for tumor-homing nanoassembly. J Mater Chem B 2013; 1:3437-3442. [PMID: 32260933 DOI: 10.1039/c3tb20387e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogen bonding is a major intermolecular interaction for self-assembly occurring in nature. Here we report novel polymeric carbohydrates, i.e., poly(oxyethylene galactaramide)s (PEGAs), as biomimetic building blocks to construct hydrogen bond-mediated self-assembled nanoparticles that are useful for biomedical in vivo applications. PEGAs were conceptually designed as a biocompatible hybrid between polysaccharide and poly(ethylene glycol) (PEG) to attain multivalent hydrogen bonding as well as fully hydrophilic, non-ionic and antifouling characteristics. It was revealed that PEGAs are capable of homospecies hydrogen bonding in water and constructing multi-chain assembled nanoparticles whose structural integrity is highly stable with varying concentration, temperature and pH. Using near-infrared fluorescence imaging we demonstrate facile blood circulation and efficient tumor accumulation of the self-assembled PEGA nanoparticles that were intravenously injected into mice. These in vivo behaviors elucidate the combined merits of our design strategy, i.e., biocompatible chemical constitution capable of multivalent hydrogen bonding, antifouling properties, minimal cell interaction and mesoscopic colloidal self-assembly, as well as size-motivated tumor targeting.
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Affiliation(s)
- Keunsoo Jeong
- Center for Theragnosis, Korea Institute of Science and Technology, 39-1 Hawolgok-dong, Seongbuk-gu, Seoul 136-791, Korea.
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76
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Cao W, Zhang X, Miao X, Yang Z, Xu H. γ-Ray-Responsive Supramolecular Hydrogel Based on a Diselenide-Containing Polymer and a Peptide. Angew Chem Int Ed Engl 2013; 52:6233-7. [DOI: 10.1002/anie.201300662] [Citation(s) in RCA: 159] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Revised: 03/31/2013] [Indexed: 11/11/2022]
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77
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Cao W, Zhang X, Miao X, Yang Z, Xu H. γ-Ray-Responsive Supramolecular Hydrogel Based on a Diselenide-Containing Polymer and a Peptide. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300662] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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78
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Zeng J, Zhang Z, Zhu J, Zhou N, Cheng Z, Zhu X. Selenium-substituted carbonates as mediators for controlled radical polymerization. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26648] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Jindong Zeng
- Department of Polymer Science and Engineering; Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application; College of Chemistry, Chemical Engineering and Materials Science, Soochow University; Suzhou 215123 People's Republic of China
| | - Zhengbiao Zhang
- Department of Polymer Science and Engineering; Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application; College of Chemistry, Chemical Engineering and Materials Science, Soochow University; Suzhou 215123 People's Republic of China
| | - Jian Zhu
- Department of Polymer Science and Engineering; Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application; College of Chemistry, Chemical Engineering and Materials Science, Soochow University; Suzhou 215123 People's Republic of China
| | - Nianchen Zhou
- Department of Polymer Science and Engineering; Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application; College of Chemistry, Chemical Engineering and Materials Science, Soochow University; Suzhou 215123 People's Republic of China
| | - Zhenping Cheng
- Department of Polymer Science and Engineering; Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application; College of Chemistry, Chemical Engineering and Materials Science, Soochow University; Suzhou 215123 People's Republic of China
| | - Xiulin Zhu
- Department of Polymer Science and Engineering; Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application; College of Chemistry, Chemical Engineering and Materials Science, Soochow University; Suzhou 215123 People's Republic of China
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79
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Sun T, Jin Y, Qi R, Peng S, Fan B. Oxidation responsive mono-cleavable amphiphilic di-block polymer micelles labeled with a single diselenide. Polym Chem 2013. [DOI: 10.1039/c3py00406f] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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80
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Liu DL, Chang X, Dong CM. Reduction- and thermo-sensitive star polypeptide micelles and hydrogels for on-demand drug delivery. Chem Commun (Camb) 2013; 49:1229-31. [DOI: 10.1039/c2cc38343h] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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81
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Wang Y, Wu G, Li X, Wang Y, Gao H, Ma J. On–off switchable drug release from multi-responsive degradable poly(ether urethane) nanoparticles. Biomater Sci 2013; 1:614-624. [DOI: 10.1039/c3bm00188a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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82
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Han P, Li S, Cao W, Li Y, Sun Z, Wang Z, Xu H. Red light responsive diselenide-containing block copolymer micelles. J Mater Chem B 2013; 1:740-743. [DOI: 10.1039/c2tb00186a] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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83
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84
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Wang Y, Li X, Wu G, Chen J, Wang Y, Gao H, Ma J. Precise control of drug release from dually responsive poly(ether urethane) nanoparticles. RSC Adv 2013. [DOI: 10.1039/c3ra41410h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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85
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