1
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Zhao K, Li M, Geng H, Gao Z, Zhang X, Sekhar KPC, Zhang P, Cui J. Synthesis of Antifouling Poly(ethylene glycol) Brushes via "Grafting to" Approach for Improved Biodistribution. Biomacromolecules 2024. [PMID: 39270004 DOI: 10.1021/acs.biomac.4c00947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2024]
Abstract
Polyethylene glycol (PEG) modification of materials has been identified to mitigate the challenge of biofouling. However, the practical application of PEGylation has been hampered by a low PEGylation density on the material surface. Therefore, developing efficient strategies to promote the PEGylation density is crucial. In this study, PEG brushes (PBs) with various structures were synthesized and their physicochemical properties and biomedical applications were investigated. Compared to benzaldehyde (BA), o-phthalaldehyde (OPA) exhibited higher reactivity with amine groups, resulting in increased grafting density (as high as 96.3%) and improved antifouling properties of PEG brushes. Bottlebrushes fabricated by PEG-OPA and polylysine demonstrated a prolonged circulation time in blood and enhanced potential for magnetic resonance imaging of tumors. Furthermore, the rigidity of the backbone was found to be crucial for the antifouling properties of PEG brushes both in vitro and in vivo. These findings are significant and provide valuable insights into designing biomaterials with superior antifouling performance.
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Affiliation(s)
- Kaijie Zhao
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Mengqi Li
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Huimin Geng
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Zhiliang Gao
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Xiaoman Zhang
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Kanaparedu P C Sekhar
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Peiyu Zhang
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Jiwei Cui
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
- Shandong Key Laboratory of Targeted Drug Delivery and Advanced Pharmaceutics, Shandong University, Jinan, Shandong 250100, China
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2
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Zafar H, Liu B, Nguyen HVT, Johnson JA. Caspase-3-Responsive, Fluorogenic Bivalent Bottlebrush Polymers. ACS Macro Lett 2024; 13:571-576. [PMID: 38647178 DOI: 10.1021/acsmacrolett.4c00119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Controlling the access of proteases to cleavable peptides placed at specific locations within macromolecular architectures represents a powerful strategy for biologically responsive materials design. Here, we report the synthesis of peptide-containing bivalent bottlebrush (co)polymers (BBPs) featuring polyethylene glycol (PEG) and 7-amino-4-methylcoumarin (AMC) pendants on each backbone repeat unit. The AMCs are linked via caspase-3-cleavable peptides which, upon enzymatic cleavage, provide a "turn-on" fluorescence signal due to the release of free AMC. Time-dependent fluorscence measurements demonstrate that the caspase-3-induced peptide cleavage and AMC release from BBPs is strongly dependent on the BBP backbone length and the AMC-peptide linker location within the BBP architecture, revealing fundamental insights into the interactions of enzymes with BBPs.
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Affiliation(s)
- Hadiqa Zafar
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Bin Liu
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Hung V-T Nguyen
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jeremiah A Johnson
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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3
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Gitter SR, Li R, Boydston AJ. Access to Functionalized Materials by Metal-Free Ring-Opening Metathesis Polymerization of Active Esters and Divergent Postpolymerization Modification. ACS Macro Lett 2024:144-150. [PMID: 38226917 DOI: 10.1021/acsmacrolett.3c00687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
Metal-free ring-opening metathesis polymerization (MF-ROMP) is an emerging polymerization strategy that provides access to ROMP materials by using organic initiators and photoredox catalysts. Unlike metal-mediated ROMP, MF-ROMP is not highly tolerant toward functionalized monomers. Herein, we report that pentafluorophenyl esters are polymerizable under MF-ROMP conditions to produce homopolymers, statistical copolymers, and block copolymers. Amine coupling agents were then used to install a range of functional groups via acyl substitution including alkynes, amino acid derivatives, fluorophores, and redox active moieties. Overall, these findings provide a framework to prepare functionalized ROMP polymers without the risk of metal contamination.
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Affiliation(s)
- Sean R Gitter
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Ruojia Li
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Andrew J Boydston
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
- Department of Chemical and Biological Engineering, University of Wisconsin, Madison, Wisconsin 53706, United States
- Department of Materials Science and Engineering, University of Wisconsin, Madison, Wisconsin 53706, United States
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4
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Brown CM, Husted KEL, Wang Y, Kilgallon LJ, Shieh P, Zafar H, Lundberg DJ, Johnson JA. Thiol-triggered deconstruction of bifunctional silyl ether terpolymers via an S NAr-triggered cascade. Chem Sci 2023; 14:8869-8877. [PMID: 37621440 PMCID: PMC10445473 DOI: 10.1039/d3sc02868b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 07/12/2023] [Indexed: 08/26/2023] Open
Abstract
While Si-containing polymers can often be deconstructed using chemical triggers such as fluoride, acids, and bases, they are resistant to cleavage by mild reagents such as biological nucleophiles, thus limiting their end-of-life options and potential environmental degradability. Here, using ring-opening metathesis polymerization, we synthesize terpolymers of (1) a "functional" monomer (e.g., a polyethylene glycol macromonomer or dicyclopentadiene); (2) a monomer containing an electrophilic pentafluorophenyl (PFP) substituent; and (3) a cleavable monomer based on a bifunctional silyl ether . Exposing these polymers to thiols under basic conditions triggers a cascade of nucleophilic aromatic substitution (SNAr) at the PFP groups, which liberates fluoride ions, followed by cleavage of the backbone Si-O bonds, inducing polymer backbone deconstruction. This method is shown to be effective for deconstruction of polyethylene glycol (PEG) based graft terpolymers in organic or aqueous conditions as well as polydicyclopentadiene (pDCPD) thermosets, significantly expanding upon the versatility of bifunctional silyl ether based functional polymers.
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Affiliation(s)
- Christopher M Brown
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - Keith E L Husted
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - Yuyan Wang
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - Landon J Kilgallon
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - Peyton Shieh
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - Hadiqa Zafar
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - David J Lundberg
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
- Department of Chemical Engineering, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - Jeremiah A Johnson
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge Massachusetts 02139 USA
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5
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Seong HG, Fink Z, Chen Z, Emrick T, Russell TP. Bottlebrush Polymers at Liquid Interfaces: Assembly Dynamics, Mechanical Properties, and All-Liquid Printed Constructs. ACS NANO 2023. [PMID: 37490585 DOI: 10.1021/acsnano.3c02684] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
Bottlebrush polymer surfactants (BPSs), formed by the interfacial interactions between bottlebrush polymers (BPs) with poly(acrylic acid) side chains dissolved in an aqueous phase and amine-functionalized ligands dissolved in the oil phase, assemble and bind strongly to the fluid-fluid interface. The ratio between NBB (backbone degree of polymerization) and NSC (side chain degree of polymerization) defines the initial assembly kinetics, interface packing efficiency, and stress relaxation. The equilibrium interfacial tension (γ) increases when NBB < NSC, but decreases when NBB ≫ NSC, correlating to a pronounced change in the effective shape of the BPs from being spherical to worm-like structures. The apparent surface coverage (ASC), i.e., the interfacial packing efficiency, decreases as NBB increases. The dripping-to-jetting transition of an injected polymer solution, as well as fluorescence recovery after photobleaching experiments, revealed faster initial assembly kinetics for BPs with higher NBB. Euler buckling of BPS assemblies with different NBB values was used to characterize the stress relaxation behavior and bending modulus. The stress relaxation behavior was directly related to the ASC, reflecting the strong influence of macromolecular shape on packing efficiency. The bending modulus of BPSs decreases for NBB < NSC, but increased when NBB ≫ NSC, showing the effect of molecular architecture and multisite anchoring. All-liquid printed constructs with lower NBB BPs yielded more stable structured liquids, underscoring the importance of macromolecular packing efficiency at fluid interfaces. Overall, this work elucidates fundamental relationships between nanoscopic structures and macroscopic properties associated with various bottlebrush polymer architectures, which translate to the stabilization of all-fluidic printed constructs.
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Affiliation(s)
- Hong-Gyu Seong
- Polymer Science and Engineering Department, Conte Center for Polymer Research, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Zachary Fink
- Polymer Science and Engineering Department, Conte Center for Polymer Research, University of Massachusetts, Amherst, Massachusetts 01003, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Zhan Chen
- Polymer Science and Engineering Department, Conte Center for Polymer Research, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Todd Emrick
- Polymer Science and Engineering Department, Conte Center for Polymer Research, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Thomas P Russell
- Polymer Science and Engineering Department, Conte Center for Polymer Research, University of Massachusetts, Amherst, Massachusetts 01003, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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6
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Hou L, Xu H, Zhang X, Zhang Y, Chen R, Zhang Z, Wang M. Impact of Polymer Rigidity on the Thermoresponsive Luminescence and Electron Spin Resonance of Polyester-Tethered Single Radicals. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Liman Hou
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen 518172, China
| | - Hongxue Xu
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen 518172, China
| | - Xuanyu Zhang
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yipeng Zhang
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen 518172, China
| | - Rui Chen
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhaoyu Zhang
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen 518172, China
| | - Mingfeng Wang
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen 518172, China
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7
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Brown CM, Lundberg DJ, Lamb JR, Kevlishvili I, Kleinschmidt D, Alfaraj YS, Kulik HJ, Ottaviani MF, Oldenhuis NJ, Johnson JA. Endohedrally Functionalized Metal-Organic Cage-Cross-Linked Polymer Gels as Modular Heterogeneous Catalysts. J Am Chem Soc 2022; 144:13276-13284. [PMID: 35819842 DOI: 10.1021/jacs.2c04289] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The immobilization of homogeneous catalysts onto supports to improve recyclability while maintaining catalytic efficiency is often a trial-and-error process limited by poor control of the local catalyst environment and few strategies to append catalysts to support materials. Here, we introduce a modular heterogenous catalysis platform that addresses these challenges. Our approach leverages the well-defined interiors of self-assembled Pd12L24 metal-organic cages/polyhedra (MOCs): simple mixing of a catalyst-ligand of choice with a polymeric ligand, spacer ligands, and a Pd salt induces self-assembly of Pd12L24-cross-linked polymer gels featuring endohedrally catalyst-functionalized junctions. Semi-empirical calculations show that catalyst incorporation into the MOC junctions of these materials has minimal affect on the MOC geometry, giving rise to well-defined nanoconfined catalyst domains as confirmed experimentally using several techniques. Given the unique network topology of these freestanding gels, they are mechanically robust regardless of their endohedral catalyst composition, allowing them to be physically manipulated and transferred from one reaction to another to achieve multiple rounds of catalysis. Moreover, by decoupling the catalyst environment (interior of MOC junctions) from the physical properties of the support (the polymer matrix), this strategy enables catalysis in environments where homogeneous catalyst analogues are not viable, as demonstrated for the Au(I)-catalyzed cyclization of 4-pentynoic acid in aqueous media.
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Affiliation(s)
- Christopher M Brown
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - David J Lundberg
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States.,Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Jessica R Lamb
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Ilia Kevlishvili
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Denise Kleinschmidt
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Yasmeen S Alfaraj
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Heather J Kulik
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | | | - Nathan J Oldenhuis
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Jeremiah A Johnson
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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8
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Efremov AA, Poryvaev AS, Polyukhov DM, Gromilov SA, Fedin MV. Oxidation of benzyl alcohol in the copper-doped ZIF-8 metal-organic framework with encapsulated nitroxyl radical. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3548-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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9
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Uddin MA, Yu H, Wang L, Amin BU, Mehmood S, Liang R, Haq F, Hu J, Xu J. Dynamics in Controllable Stimuli-Responsive Self-Assembly of Polymer Vesicles with Stable Radical Functionality. ACS APPLIED MATERIALS & INTERFACES 2021; 13:61693-61706. [PMID: 34913332 DOI: 10.1021/acsami.1c21760] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Self-assembled polymer vesicles have emerged as exciting and promising materials for their potential application in drug delivery, but the dynamics of stimuli-responsive polymers in these areas with pendant functionality in order to understand the structure-property relationship under different physicochemical conditions is still open to discussion. In this work, nitroxide radical-containing copolymers were synthesized and utilized to investigate local dynamics in their vesicular assemblies. Herein, electron paramagnetic resonance (EPR) spectroscopy was applied to reveal the smart supramolecular vesicular structure and polymer chain dynamics in stimuli-responsive controlled assemblies by considering molecular-level interactions. These interactions and dynamics were dependent on the microenvironment of the assemblies, which might be affected by physicochemical parameters such as radical concentration, pH, redox agent, polarity, and viscosity. These observations help to accomplish quantitative insights into the stimuli-responsive colloidal vesicular assemblies. The vesicles were used as an anticancer drug carrier, which showed high drug loading efficiency (63.65%). The reduction-responsive prompt disassembly accelerated the release. Furthermore, the biocompatibility and anticancer activity were examined by cellular experiments against normal fibroblasts (L929) and human cervical cancer (HeLa) cell lines, respectively. The results demonstrate that this effort provides an easy strategy for designing controllable stimuli-responsive polymer nanosystems which promotes their promising application in cancer treatment.
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Affiliation(s)
- Md Alim Uddin
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang P. R. China
| | - Haojie Yu
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang P. R. China
| | - Li Wang
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang P. R. China
| | - Bilal Ul Amin
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang P. R. China
| | - Sahid Mehmood
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang P. R. China
| | - Ruixue Liang
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang P. R. China
| | - Fazal Haq
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang P. R. China
| | - Jian Hu
- Department of Thoracic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, P. R. China
| | - Jinming Xu
- Department of Thoracic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, P. R. China
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10
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Jia F, Chen P, Wang D, Sun Y, Ren M, Wang Y, Cao X, Zhang L, Fang Y, Tan X, Lu H, Cai J, Lu X, Zhang K. Bottlebrush Polymer-Conjugated Melittin Exhibits Enhanced Antitumor Activity and Better Safety Profile. ACS APPLIED MATERIALS & INTERFACES 2021; 13:42533-42542. [PMID: 34472829 PMCID: PMC8784393 DOI: 10.1021/acsami.1c14285] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Despite potency against a variety of cancers in preclinical systems, melittin (MEL), a major peptide in bee venom, exhibits non-specific toxicity, severe hemolytic activity, and poor pharmacological properties. Therefore, its advancement in the clinical translation system has been limited to early-stage trials. Herein, we report a biohybrid involving a bottlebrush-architectured poly(ethylene glycol) (PEG) and MEL. Termed pacMEL, the conjugate consists of a high-density PEG arrangement, which provides MEL with steric inhibition against protein access, while the high molecular weight of pacMEL substantially enhances plasma pharmacokinetics with a ∼10-fold increase in the area under the curve (AUC∞) compared to free MEL. pacMEL also significantly reduces hepatic damage and unwanted innate immune response and all but eliminated hemolytic activities of MEL. Importantly, pacMEL passively accumulates at subcutaneously inoculated tumor sites and exhibits stronger tumor-suppressive activity than molecular MEL. Collectively, pacMEL makes MEL a safer and more appealing drug candidate.
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Affiliation(s)
- Fei Jia
- Departments of Chemistry and Chemical Biology, Chemical Engineering, and Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Peiru Chen
- Departments of Chemistry and Chemical Biology, Chemical Engineering, and Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Dali Wang
- Departments of Chemistry and Chemical Biology, Chemical Engineering, and Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Yehui Sun
- Departments of Chemistry and Chemical Biology, Chemical Engineering, and Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Mengqi Ren
- Departments of Chemistry and Chemical Biology, Chemical Engineering, and Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Yuyan Wang
- Departments of Chemistry and Chemical Biology, Chemical Engineering, and Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Xueyan Cao
- Departments of Chemistry and Chemical Biology, Chemical Engineering, and Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Lei Zhang
- Departments of Chemistry and Chemical Biology, Chemical Engineering, and Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Yang Fang
- Departments of Chemistry and Chemical Biology, Chemical Engineering, and Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Xuyu Tan
- Departments of Chemistry and Chemical Biology, Chemical Engineering, and Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Hao Lu
- Departments of Chemistry and Chemical Biology, Chemical Engineering, and Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Jiansong Cai
- Departments of Chemistry and Chemical Biology, Chemical Engineering, and Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Xueguang Lu
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Ke Zhang
- Departments of Chemistry and Chemical Biology, Chemical Engineering, and Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States
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11
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Xu B, Qian H, Zhang L, Lin S. Branched Aggregates with Tunable Morphology via Hierarchical Self‐Assembly of Azobenzene‐Derived Molecular Double Brushes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Binbin Xu
- Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education Frontiers Science Center for Materiobiology and Dynamic Chemistry School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 China
| | - Hongyu Qian
- Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education Frontiers Science Center for Materiobiology and Dynamic Chemistry School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 China
| | - Ling Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education Frontiers Science Center for Materiobiology and Dynamic Chemistry School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 China
| | - Shaoliang Lin
- Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education Frontiers Science Center for Materiobiology and Dynamic Chemistry School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 China
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12
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Jia F, Kubiak JM, Onoda M, Wang Y, Macfarlane RJ. Design and Synthesis of Quick Setting Nonswelling Hydrogels via Brush Polymers. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2100968. [PMID: 34151547 PMCID: PMC8373163 DOI: 10.1002/advs.202100968] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Indexed: 05/25/2023]
Abstract
Brush polymers have emerged as components of novel materials that show huge potential in multiple disciplines and applications, including self-assembling photonic crystals, drug delivery vectors, biomimetic lubricants, and ultrasoft elastomers. However, an understanding of how this unique topology can affect the properties of highly solvated materials like hydrogels remain under investigated. Here, it is investigated how the high functionality and large overall size of brush polymers enhances the gelation kinetics of low polymer weight percent gels, enabling 100-fold faster gelation rates and 15-fold higher stiffness values than gels crosslinked by traditional star polymers of the same composition and polymer chain length. This work demonstrates that brush polymer topology provides a useful means to control gelation kinetics without the need to manipulate polymer composition or crosslinking chemistry. The unique architecture of brush polymers also results in restrained or even nonswelling behavior at different temperatures, regardless of the polymer concentration. Brush polymers therefore are an interesting tool for examining how high-functionality polymer building blocks can affect structure-property relationships and chemical kinetics in hydrogel materials, and also provide a useful rapidly-setting hydrogel platform with tunable properties and great potential for multiple material applications.
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Affiliation(s)
- Fei Jia
- Department of Materials Science and EngineeringMassachusetts Institute of Technology (MIT)77 Massachusetts AvenueCambridgeMA02139USA
| | - Joshua M. Kubiak
- Department of Materials Science and EngineeringMassachusetts Institute of Technology (MIT)77 Massachusetts AvenueCambridgeMA02139USA
| | - Michika Onoda
- Department of Materials Science and EngineeringMassachusetts Institute of Technology (MIT)77 Massachusetts AvenueCambridgeMA02139USA
| | - Yuping Wang
- Department of Materials Science and EngineeringMassachusetts Institute of Technology (MIT)77 Massachusetts AvenueCambridgeMA02139USA
| | - Robert J. Macfarlane
- Department of Materials Science and EngineeringMassachusetts Institute of Technology (MIT)77 Massachusetts AvenueCambridgeMA02139USA
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13
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Roos AH, Hoffmann JF, Binder WH, Hinderberger D. Nanoscale structure and dynamics of thermoresponsive single-chain nanoparticles investigated by EPR spectroscopy. SOFT MATTER 2021; 17:7032-7037. [PMID: 34251013 DOI: 10.1039/d1sm00582k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We characterize temperature-dependent macroscopic and nanoscopic phase transitions and nanoscopic pre-transitions of water-soluble single chain nanoparticles (SCNPs). The studied SCNPs are based on polymers displaying lower-critical solution temperature (LCST) behavior and show nanoscale compartmentation. SCNPs are amenable to continuous wave electron paramagnetic resonance (CW EPR) spectroscopy to study how amphiphilic, non-covalently added nitroxide spin probes or covalently attached spin labels sample their environment concerning nanoscale structures (polarity, hydrophilicity/-phobicity) and dynamics. These SCNPs are formed through single-chain collapse and have been shown to have nanosized compartments that are rigidified during the crosslinking process. We analyze the temperature-dependent phase transitions of spin-labeled SCNPs by rigorous spectral simulations of a series of multicomponent EPR-spectra that derive from the nanoinhomogeneities (1) that are due to the single-chain compartmentation in SCNPs and (2) the transformation upon temperature change due to the LCST behavior. These transitions of the SCNPs and their respective polymer precursors can be monitored and understood on the nanoscale by following EPR-spectroscopic parameters like hyperfine couplings that depend on the surrounding solvent molecules or Heisenberg spin exchange between small molecule spin probes or covalently attached spin labels in the nanocompartments. In particular, for one SCNP, we find an interesting behavior that we ascribe to the properties of the nanosized inner core with continuous effects before and jump-like changes after the macroscopic thermal collapse, indicating highly efficient desolvation and compaction upon an increase in temperature and aggregation of individual nanoparticles above the collapse temperature.
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Affiliation(s)
- Andreas H Roos
- Institute of Chemistry, Martin Luther University (MLU) Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany.
| | - Justus F Hoffmann
- Institute of Chemistry, Martin Luther University (MLU) Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany.
| | - Wolfgang H Binder
- Institute of Chemistry, Martin Luther University (MLU) Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany.
| | - Dariush Hinderberger
- Institute of Chemistry, Martin Luther University (MLU) Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany.
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14
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Xu B, Qian H, Zhang L, Lin S. Branched Aggregates with Tunable Morphology via Hierarchical Self-Assembly of Azobenzene-Derived Molecular Double Brushes. Angew Chem Int Ed Engl 2021; 60:17707-17713. [PMID: 34075671 DOI: 10.1002/anie.202106321] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Indexed: 11/10/2022]
Abstract
Hierarchical self-assembly is one of the most effective approaches to fabricate nature-inspired materials with subtle nanostructures. We report a distinct hierarchical self-assembly process of molecular double brushes (MDBs) with each graft site carrying a poly(azobenzene-acrylate) (PAzo) chain and a poly(ethylene oxide) (PEO) chain. Asymmetric tapered worm (ATW) nanostructures with chain-end reactivity assembling from the azobenzene-derived MDBs serve as primary subunits to prepare branched supermicelles by increasing water content (Cw ) in THF/water. Various natural Antedon-shaped multiarm worm-like aggregates (MWAs) can be created via the particle-particle connection of ATWs. Intriguingly, the azobenzene moieties undergo trans-cis isomerization upon UV irradiation and further promote a morphology evolution of MWAs. Multiscale supermicelles comprised of starfish shapes with differing central body and arm morphologies (e.g., compare to the biological specimens Luidia ciliaris and Crossaster papposus) were prepared by manipulating irradiation time.
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Affiliation(s)
- Binbin Xu
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Hongyu Qian
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Ling Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Shaoliang Lin
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
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15
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16
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Lindemann WR, Christoff-Tempesta T, Ortony JH. A Global Minimization Toolkit for Batch-Fitting and χ 2 Cluster Analysis of CW-EPR Spectra. Biophys J 2020; 119:1937-1945. [PMID: 33147478 PMCID: PMC7732748 DOI: 10.1016/j.bpj.2020.08.042] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 08/26/2020] [Accepted: 08/31/2020] [Indexed: 12/22/2022] Open
Abstract
Electron paramagnetic resonance spectroscopy (EPR) is a uniquely powerful technique for characterizing conformational dynamics at specific sites within a broad range of molecular species in water. Computational tools for fitting EPR spectra have enabled dynamics parameters to be determined quantitatively. These tools have dramatically broadened the capabilities of EPR dynamics analysis, however, their implementation can easily lead to overfitting or problems with self-consistency. As a result, dynamics parameters and associated properties become difficult to reliably determine, particularly in the slow-motion regime. Here, we present an EPR analysis strategy and the corresponding computational tool for batch-fitting EPR spectra and cluster analysis of the χ2 landscape in Linux. We call this tool CSCA (Chi-Squared Cluster Analysis). The CSCA tool allows us to determine self-consistent rotational diffusion rates and enables calculations of activation energies of diffusion from Arrhenius plots. We demonstrate CSCA using a model system designed for EPR analysis: a self-assembled nanoribbon with radical electron spin labels positioned at known distances off the surface. We anticipate that the CSCA tool will increase the reproducibility of EPR fitting for the characterization of dynamics in biomolecules and soft matter.
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Affiliation(s)
- William R Lindemann
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Ty Christoff-Tempesta
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Julia H Ortony
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts.
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17
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Naveed KUR, Wang L, Yu H, Teng L, Uddin MA, Fahad S, Ullah RS, Nazir A, Elshaarani T. Synthesis of spin labeled ethylene glycol based polymers and study of their segmental motion. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128528] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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18
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Synthesis of poly(diethylaminoethyl methacrylate-co-2,2,6,6-tetramethyl-4-piperidyl methacrylate)s and their segmental motion study. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04717-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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19
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Uddin MA, Yu H, Wang L, Naveed K, Haq F, Amin BU, Mehmood S, Nazir A, Xing Y, Shen D. Recent progress in
EPR
study of spin labeled polymers and spin probed polymer systems. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200039] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Md Alim Uddin
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological EngineeringZhejiang University Hangzhou Zhejiang China
| | - Haojie Yu
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological EngineeringZhejiang University Hangzhou Zhejiang China
| | - Li Wang
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological EngineeringZhejiang University Hangzhou Zhejiang China
| | - Kaleem‐ur‐Rahman Naveed
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological EngineeringZhejiang University Hangzhou Zhejiang China
| | - Fazal Haq
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological EngineeringZhejiang University Hangzhou Zhejiang China
| | - Bilal Ul Amin
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological EngineeringZhejiang University Hangzhou Zhejiang China
| | - Sahid Mehmood
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological EngineeringZhejiang University Hangzhou Zhejiang China
| | - Ahsan Nazir
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological EngineeringZhejiang University Hangzhou Zhejiang China
| | - Yusheng Xing
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological EngineeringZhejiang University Hangzhou Zhejiang China
| | - Di Shen
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological EngineeringZhejiang University Hangzhou Zhejiang China
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20
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Motoyanagi J, Kawamura S, Minoda M. Controlled Synthesis of Poly(vinyl ether)-Grafted Poly(phenylacetylene)s by a Combination of Living Coordination Polymerization and Living Cationic Polymerization. ACS OMEGA 2020; 5:5854-5861. [PMID: 32226865 PMCID: PMC7098012 DOI: 10.1021/acsomega.9b04056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 02/28/2020] [Indexed: 05/04/2023]
Abstract
We newly designed a functionalized monomer (PhAVE-AcOH) containing a phenylacetylene (PhA) group and a 1-(acetoxy)ethoxy group, the latter of which is expected to act as an initiator moiety in combination with Lewis acid-based activators under living cationic polymerization conditions. A polyPhA-based multifunctional initiator poly(PhAVE-AcOH) with a narrow molecular weight distribution (M w/M n = 1.02) was synthesized by Rh complex-mediated living coordination polymerization of PhAVE-AcOH. Then, living cationic graft polymerization of isobutyl vinyl ether (IBVE) was performed employing the pendant 1-(acetoxy) ethoxy initiating moiety of poly(PhAVE-AcOH) to form polyIBVE-grafted polyPhA(polyPhA-g-polyIBVE), where both the main chain and side chains possessed well-controlled structures (M w/M n = 1.05-1.10). We found that UV-vis absorption spectra of polyPhA-g-polyIBVE were progressively redshifted with increasing molecular weights of the graft chain.
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21
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Nicolas C, Zhang W, Choppé É, Fontaine L, Montembault V. Polynorbornene‐
g
‐poly(ethylene oxide) Through the Combination of ROMP and Nitroxide Radical Coupling Reactions. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20190183] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Clémence Nicolas
- Institut des Molécules et Matériaux du Mans (IMMM) ‐ UMR 6283 CNRSLe Mans Université Le Mans France
| | - Wenhao Zhang
- Institut des Molécules et Matériaux du Mans (IMMM) ‐ UMR 6283 CNRSLe Mans Université Le Mans France
| | - Émilie Choppé
- Institut des Molécules et Matériaux du Mans (IMMM) ‐ UMR 6283 CNRSLe Mans Université Le Mans France
| | - Laurent Fontaine
- Institut des Molécules et Matériaux du Mans (IMMM) ‐ UMR 6283 CNRSLe Mans Université Le Mans France
| | - Véronique Montembault
- Institut des Molécules et Matériaux du Mans (IMMM) ‐ UMR 6283 CNRSLe Mans Université Le Mans France
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22
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Cho SH, Yang SK. Water-soluble polyglycerol-dendronized poly(norbornene)s with functional side-chains. SOFT MATTER 2019; 15:9452-9457. [PMID: 31709435 DOI: 10.1039/c9sm01800j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
High molecular weight polyglycerol-dendronized poly(norbornene)s (PGD-PNBs) were prepared via ring-opening metathesis polymerization of norbornene monomers containing amine functional groups on the side-chains followed by dendron growth from the olefins of PNB backbones using iterative dihydroxylation and allylation. The fourth-generation PGD-PNB with a degree of polymerization of ca. 500 is thus functionalized with 16 peripheral hydroxyl groups as well as a single amine on each repeat unit of the PNB backbone. Furthermore, the amine functionality could be used to install hydrophobic fluorophores such as coumarin and pyrene, thereby obtaining the final PGD-PNB structures which are highly water-soluble and fluorescent.
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Affiliation(s)
- Sung Hyun Cho
- Department of Chemistry Education, Chonnam National University, Gwangju 61186, Korea.
| | - Si Kyung Yang
- Department of Chemistry Education, Chonnam National University, Gwangju 61186, Korea.
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23
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Li H, Sun Z, Jiang S, Lai X, Böckler A, Huang H, Peng F, Liu L, Chen Y. Tadpole-like Unimolecular Nanomotor with Sub-100 nm Size Swims in a Tumor Microenvironment Model. NANO LETTERS 2019; 19:8749-8757. [PMID: 31671944 DOI: 10.1021/acs.nanolett.9b03456] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Inspired by the natural motors capable of performing multiple tasks in complex living environments, synthetic nanomotors emerge as a potential vehicle for revolutionizing biomedical processes. Yet current motors suffer from decreased and even completely hindered motion in a complex physiological environment, shadowing the future of this booming field. To address this problem, a unimolecular nanomotor based on molecular bottlebrush (MBB) of sub-100 nm size is reported. This motor is constructed precisely via controlled radical polymerization and click chemistry and propelled with biocompatible catalase. Such a molecular nanomotor possesses tadpole-like asymmetry and is able to overcome Brownian motion, and demonstrates strong directional propulsion (linear and coiled cyclic trajectories) in a viscous tumor microenvironment gel model at an ultralow hydrogen peroxide level of 2 mM (0.006%). In addition, the molecular nanomotor exhibits superior stability in serum containing cell medium and good biocompatibility in blood. Such molecular bottlebrush based nanomotors may represent a unique platform for overcoming the tissue penetration barrier.
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Affiliation(s)
- Huaan Li
- School of Materials Science and Engineering, and Center of Functional Biomaterials, Key Laboratory of Polymeric Composite Materials and Functional Materials of Ministry of Education, GD Research Center for Functional Biomaterials Engineering and Technology , Sun Yat-sen University , Guangzhou 510275 , China
| | - Ziyang Sun
- School of Materials Science and Engineering, and Center of Functional Biomaterials, Key Laboratory of Polymeric Composite Materials and Functional Materials of Ministry of Education, GD Research Center for Functional Biomaterials Engineering and Technology , Sun Yat-sen University , Guangzhou 510275 , China
| | - Suqiu Jiang
- School of Materials Science and Engineering, and Center of Functional Biomaterials, Key Laboratory of Polymeric Composite Materials and Functional Materials of Ministry of Education, GD Research Center for Functional Biomaterials Engineering and Technology , Sun Yat-sen University , Guangzhou 510275 , China
| | - Xinyi Lai
- School of Materials Science and Engineering, and Center of Functional Biomaterials, Key Laboratory of Polymeric Composite Materials and Functional Materials of Ministry of Education, GD Research Center for Functional Biomaterials Engineering and Technology , Sun Yat-sen University , Guangzhou 510275 , China
| | - Andreas Böckler
- School of Materials Science and Engineering, and Center of Functional Biomaterials, Key Laboratory of Polymeric Composite Materials and Functional Materials of Ministry of Education, GD Research Center for Functional Biomaterials Engineering and Technology , Sun Yat-sen University , Guangzhou 510275 , China
| | - Huahua Huang
- School of Materials Science and Engineering, and Center of Functional Biomaterials, Key Laboratory of Polymeric Composite Materials and Functional Materials of Ministry of Education, GD Research Center for Functional Biomaterials Engineering and Technology , Sun Yat-sen University , Guangzhou 510275 , China
| | - Fei Peng
- School of Materials Science and Engineering, and Center of Functional Biomaterials, Key Laboratory of Polymeric Composite Materials and Functional Materials of Ministry of Education, GD Research Center for Functional Biomaterials Engineering and Technology , Sun Yat-sen University , Guangzhou 510275 , China
| | - Lixin Liu
- School of Materials Science and Engineering, and Center of Functional Biomaterials, Key Laboratory of Polymeric Composite Materials and Functional Materials of Ministry of Education, GD Research Center for Functional Biomaterials Engineering and Technology , Sun Yat-sen University , Guangzhou 510275 , China
| | - Yongming Chen
- School of Materials Science and Engineering, and Center of Functional Biomaterials, Key Laboratory of Polymeric Composite Materials and Functional Materials of Ministry of Education, GD Research Center for Functional Biomaterials Engineering and Technology , Sun Yat-sen University , Guangzhou 510275 , China
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24
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Shieh P, Nguyen HVT, Johnson JA. Tailored silyl ether monomers enable backbone-degradable polynorbornene-based linear, bottlebrush and star copolymers through ROMP. Nat Chem 2019; 11:1124-1132. [PMID: 31659310 PMCID: PMC6874888 DOI: 10.1038/s41557-019-0352-4] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 09/12/2019] [Indexed: 01/01/2023]
Abstract
Ring-opening metathesis polymerization of norbornene-based (macro)monomers is a powerful approach for the synthesis of macromolecules with diverse compositions and complex architectures. Nevertheless, a fundamental limitation of polymers prepared by this strategy is their lack of facile degradability, limiting their utility in a range of applications. Here we describe a class of readily available bifunctional silyl ether-based cyclic olefins that copolymerize efficiently with norbornene-based (macro)monomers to provide copolymers with backbone degradability under mildly acidic aqueous conditions and degradation rates that can be tuned over several orders of magnitude, depending on the silyl ether substituents. These monomers can be used to manipulate the in vivo biodistribution and clearance rate of polyethylene glycol-based bottlebrush polymers, as well as to synthesize linear, bottlebrush and brush-arm star copolymers with degradable segments. We expect that this work will enable preparation of degradable polymers by ROMP for biomedical applications, responsive self-assembly and improved sustainability.
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Affiliation(s)
- Peyton Shieh
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Hung V-T Nguyen
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Jeremiah A Johnson
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA.
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25
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Naveed KUR, Wang L, Yu H, Summe Ullah R, Nazir A, Fahad S, Elshaarani T, Usman M, Khan A. Synthesis of spin-labelled poly(acrylic acid)s and their segmental motion study. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1685690] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Kaleem-Ur-Rahman Naveed
- State Key Laboratory of Chemical Engineering, College of Chemical & Biological Engineering, Zhejiang University, Hangzhou, People’s Republic of China
| | - Li Wang
- State Key Laboratory of Chemical Engineering, College of Chemical & Biological Engineering, Zhejiang University, Hangzhou, People’s Republic of China
| | - Haojie Yu
- State Key Laboratory of Chemical Engineering, College of Chemical & Biological Engineering, Zhejiang University, Hangzhou, People’s Republic of China
| | - Raja Summe Ullah
- State Key Laboratory of Chemical Engineering, College of Chemical & Biological Engineering, Zhejiang University, Hangzhou, People’s Republic of China
| | - Ahsan Nazir
- State Key Laboratory of Chemical Engineering, College of Chemical & Biological Engineering, Zhejiang University, Hangzhou, People’s Republic of China
| | - Shah Fahad
- State Key Laboratory of Chemical Engineering, College of Chemical & Biological Engineering, Zhejiang University, Hangzhou, People’s Republic of China
| | - Tarig Elshaarani
- State Key Laboratory of Chemical Engineering, College of Chemical & Biological Engineering, Zhejiang University, Hangzhou, People’s Republic of China
| | - Muhammad Usman
- State Key Laboratory of Chemical Engineering, College of Chemical & Biological Engineering, Zhejiang University, Hangzhou, People’s Republic of China
| | - Amin Khan
- State Key Laboratory of Chemical Engineering, College of Chemical & Biological Engineering, Zhejiang University, Hangzhou, People’s Republic of China
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26
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Bogdanov AV, Bobrovsky AY, Vorobiev AK. The orientation order of liquid‐crystalline polymer, measured by ESR and optical dichroism techniques. ACTA ACUST UNITED AC 2019. [DOI: 10.1002/polb.24836] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Alexey V. Bogdanov
- Chemistry DepartmentLomonosov Moscow State University Leninskie gory 1/3, Moscow 119991 Russian Federation
| | - Alexey Yu. Bobrovsky
- Chemistry DepartmentLomonosov Moscow State University Leninskie gory 1/3, Moscow 119991 Russian Federation
| | - Andrey Kh. Vorobiev
- Chemistry DepartmentLomonosov Moscow State University Leninskie gory 1/3, Moscow 119991 Russian Federation
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27
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Le D, Dilger M, Pertici V, Diabaté S, Gigmes D, Weiss C, Delaittre G. Ultraschnelle Synthese multivalenter radikalischer Nanopartikel durch ringöffnende Metathesepolymerisations‐induzierte Selbstorganisation. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813434] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Dao Le
- Institut für Toxikologie und Genetik (ITG) Karlsruher Institut für Technologie (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland
- Institut für Technische Chemie und Polymerchemie (ITCP) Karlsruher Institut für Technologie (KIT) 76128 Karlsruhe Deutschland
| | - Marco Dilger
- Institut für Toxikologie und Genetik (ITG) Karlsruher Institut für Technologie (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland
| | - Vincent Pertici
- Aix-Marseille-Univ CNRS Institut de Chimie Radicalaire, UMR 7273 13397 Marseille Frankreich
| | - Silvia Diabaté
- Institut für Toxikologie und Genetik (ITG) Karlsruher Institut für Technologie (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland
| | - Didier Gigmes
- Aix-Marseille-Univ CNRS Institut de Chimie Radicalaire, UMR 7273 13397 Marseille Frankreich
| | - Carsten Weiss
- Institut für Toxikologie und Genetik (ITG) Karlsruher Institut für Technologie (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland
| | - Guillaume Delaittre
- Institut für Toxikologie und Genetik (ITG) Karlsruher Institut für Technologie (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland
- Institut für Technische Chemie und Polymerchemie (ITCP) Karlsruher Institut für Technologie (KIT) 76128 Karlsruhe Deutschland
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28
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Le D, Dilger M, Pertici V, Diabaté S, Gigmes D, Weiss C, Delaittre G. Ultra‐Fast Synthesis of Multivalent Radical Nanoparticles by Ring‐Opening Metathesis Polymerization‐Induced Self‐Assembly. Angew Chem Int Ed Engl 2019; 58:4725-4731. [DOI: 10.1002/anie.201813434] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 01/06/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Dao Le
- Institute of Toxicology and Genetics (ITG) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Institute for Chemical Technology and Polymer Chemistry (ITCP) Karlsruhe Institute of Technology (KIT) 76128 Karlsruhe Germany
| | - Marco Dilger
- Institute of Toxicology and Genetics (ITG) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Vincent Pertici
- Aix-Marseille-Univ CNRS Institut de Chimie Radicalaire, UMR 7273 13397 Marseille France
| | - Silvia Diabaté
- Institute of Toxicology and Genetics (ITG) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Didier Gigmes
- Aix-Marseille-Univ CNRS Institut de Chimie Radicalaire, UMR 7273 13397 Marseille France
| | - Carsten Weiss
- Institute of Toxicology and Genetics (ITG) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Guillaume Delaittre
- Institute of Toxicology and Genetics (ITG) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Institute for Chemical Technology and Polymer Chemistry (ITCP) Karlsruhe Institute of Technology (KIT) 76128 Karlsruhe Germany
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29
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Foster J, Varlas S, Couturaud B, Coe Z, O’Reilly RK. Getting into Shape: Reflections on a New Generation of Cylindrical Nanostructures' Self-Assembly Using Polymer Building Blocks. J Am Chem Soc 2019; 141:2742-2753. [PMID: 30689954 PMCID: PMC6407914 DOI: 10.1021/jacs.8b08648] [Citation(s) in RCA: 149] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Indexed: 12/20/2022]
Abstract
Cylinders are fascinating structures with uniquely high surface area, internal volume, and rigidity. On the nanoscale, a broad range of applications have demonstrated advantageous behavior of cylindrical micelles or bottlebrush polymers over traditional spherical nano-objects. In the past, obtaining pure samples of cylindrical nanostructures using polymer building blocks via conventional self-assembly strategies was challenging. However, in recent years, the development of advanced methods including polymerization-induced self-assembly, crystallization-driven self-assembly, and bottlebrush polymer synthesis has facilitated the easy synthesis of cylindrical nano-objects at industrially relevant scales. In this Perspective, we discuss these techniques in detail, highlighting the advantages and disadvantages of each strategy and considering how the cylindrical nanostructures that are obtained differ in their chemical structure, physical properties, colloidal stability, and reactivity. In addition, we propose future challenges to address in this rapidly expanding field.
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Affiliation(s)
- Jeffrey
C. Foster
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
| | - Spyridon Varlas
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
| | - Benoit Couturaud
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
| | - Zachary Coe
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
| | - Rachel K. O’Reilly
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
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30
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Choinopoulos I. Grubbs' and Schrock's Catalysts, Ring Opening Metathesis Polymerization and Molecular Brushes-Synthesis, Characterization, Properties and Applications. Polymers (Basel) 2019; 11:E298. [PMID: 30960282 PMCID: PMC6419171 DOI: 10.3390/polym11020298] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 02/08/2019] [Accepted: 02/09/2019] [Indexed: 12/20/2022] Open
Abstract
In this review, molecular brushes and other macromolecular architectures bearing a bottlebrush segment where the main chain is synthesized by ring opening metathesis polymerization (ROMP) mediated by Mo or Ru metal complexes are considered. A brief review of metathesis and ROMP is presented in order to understand the problems and the solutions provided through the years. The synthetic strategies towards bottlebrush copolymers are demonstrated and each one discussed separately. The initiators/catalysts for the synthesis of the backbone with ROMP are discussed. Syntheses of molecular brushes are presented. The most interesting properties of the bottlebrushes are detailed. Finally, the applications studied by different groups are presented.
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Affiliation(s)
- Ioannis Choinopoulos
- Department of Chemistry, Industrial Chemistry Laboratory, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece.
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31
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Nicolas C, Fontaine L, Montembault V. Nitroxide radical-containing polynorbornenes by ring-opening metathesis polymerization as stabilizing agents for polyolefins. Polym Chem 2019. [DOI: 10.1039/c9py00769e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A series of original 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-containing dicarboximide norbornene monomers have been synthesized and polymerized via ring-opening metathesis polymerization using the Grubbs 3rd generation catalyst.
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Affiliation(s)
- Clémence Nicolas
- Institut des Molécules et Matériaux du Mans (IMMM)
- UMR 6283 CNRS – Le Mans Université
- 72085 Le Mans Cedex 9
- France
| | - Laurent Fontaine
- Institut des Molécules et Matériaux du Mans (IMMM)
- UMR 6283 CNRS – Le Mans Université
- 72085 Le Mans Cedex 9
- France
| | - Véronique Montembault
- Institut des Molécules et Matériaux du Mans (IMMM)
- UMR 6283 CNRS – Le Mans Université
- 72085 Le Mans Cedex 9
- France
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32
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Hauenschild T, Hinderberger D. A Platform of Phenol-Based Nitroxide Radicals as an “EPR Toolbox” in Supramolecular and Click Chemistry. Chempluschem 2018; 84:43-51. [DOI: 10.1002/cplu.201800429] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 10/15/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Till Hauenschild
- Martin Luther University Halle-Wittenberg; Institute of Chemistry Physical Chemistry - Complex Self-Organizing Systems; Von-Danckelmann-Platz 4 06120 Halle (Saale) Germany
| | - Dariush Hinderberger
- Martin Luther University Halle-Wittenberg; Institute of Chemistry Physical Chemistry - Complex Self-Organizing Systems; Von-Danckelmann-Platz 4 06120 Halle (Saale) Germany
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33
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Heiler KE, Pan CW, Heiler AJ, Wu JP, Tillman ES. Synthesis of Nitroxide End-Labeled Polymers by Capturing Polystyrene Radicals with Spin Traps. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Katherine E. Heiler
- Department of Chemistry and Biochemistry; Santa Clara University; 500 El Camino Real Santa Clara CA 95053 USA
| | - Ching W. Pan
- Department of Chemistry and Biochemistry; Santa Clara University; 500 El Camino Real Santa Clara CA 95053 USA
| | - Alexander J. Heiler
- Department of Chemistry and Biochemistry; Santa Clara University; 500 El Camino Real Santa Clara CA 95053 USA
| | - Jessica P. Wu
- Department of Chemistry and Biochemistry; Santa Clara University; 500 El Camino Real Santa Clara CA 95053 USA
| | - Eric S. Tillman
- Department of Chemistry and Biochemistry; Santa Clara University; 500 El Camino Real Santa Clara CA 95053 USA
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34
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Naveed KUR, Wang L, Yu H, Ullah RS, Haroon M, Fahad S, Li J, Elshaarani T, Khan RU, Nazir A. Recent progress in the electron paramagnetic resonance study of polymers. Polym Chem 2018. [DOI: 10.1039/c8py00689j] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This review article provides an overview of the contemporary research based on a tailor-made technique to understand the paramagnetic behavior of different polymer classes.
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Affiliation(s)
| | - Li Wang
- College of Chemical and Biological Engineering
- Zhejiang University
- Zhejiang
- China
| | - Haojie Yu
- College of Chemical and Biological Engineering
- Zhejiang University
- Zhejiang
- China
| | - Raja Summe Ullah
- College of Chemical and Biological Engineering
- Zhejiang University
- Zhejiang
- China
| | - Muhammad Haroon
- College of Chemical and Biological Engineering
- Zhejiang University
- Zhejiang
- China
| | - Shah Fahad
- College of Chemical and Biological Engineering
- Zhejiang University
- Zhejiang
- China
| | - Jiyang Li
- College of Chemical and Biological Engineering
- Zhejiang University
- Zhejiang
- China
| | - Tarig Elshaarani
- College of Chemical and Biological Engineering
- Zhejiang University
- Zhejiang
- China
| | - Rizwan Ullah Khan
- College of Chemical and Biological Engineering
- Zhejiang University
- Zhejiang
- China
| | - Ahsan Nazir
- College of Chemical and Biological Engineering
- Zhejiang University
- Zhejiang
- China
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35
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Hansen KA, Blinco JP. Nitroxide radical polymers – a versatile material class for high-tech applications. Polym Chem 2018. [DOI: 10.1039/c7py02001e] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A comprehensive summary of synthetic strategies for the preparation of nitroxide radical polymer materials and a state-of-the-art perspective on their latest and most exciting applications.
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Affiliation(s)
- Kai-Anders Hansen
- School of Chemistry
- Physics and Mechanical Engineering
- Queensland University of Technology
- Brisbane
- Australia
| | - James P. Blinco
- School of Chemistry
- Physics and Mechanical Engineering
- Queensland University of Technology
- Brisbane
- Australia
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36
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Lang C, Barner L, Blinco JP, Barner-Kowollik C, Fairfull-Smith KE. Direct access to biocompatible nitroxide containing polymers. Polym Chem 2018. [DOI: 10.1039/c8py00089a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Ring-opening copolymerization of a nitroxide containing cyclic carbonate and d/l-lactide was used to directly access well-defined biocompatible polymers.
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Affiliation(s)
- Christiane Lang
- School of Chemistry
- Physics and Mechanical Engineering
- Queensland University of Technology (QUT)
- Brisbane
- Australia
| | - Leonie Barner
- School of Chemistry
- Physics and Mechanical Engineering
- Queensland University of Technology (QUT)
- Brisbane
- Australia
| | - James P. Blinco
- School of Chemistry
- Physics and Mechanical Engineering
- Queensland University of Technology (QUT)
- Brisbane
- Australia
| | - Christopher Barner-Kowollik
- School of Chemistry
- Physics and Mechanical Engineering
- Queensland University of Technology (QUT)
- Brisbane
- Australia
| | - Kathryn E. Fairfull-Smith
- School of Chemistry
- Physics and Mechanical Engineering
- Queensland University of Technology (QUT)
- Brisbane
- Australia
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37
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Noh H, Kim HJ, Yang SK. Synthesis of amphiphilic homopolymers and their self-assembly into acid-responsive polymeric micelles. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28766] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Hyeongju Noh
- Department of Chemistry Education; Chonnam National University; Gwangju 61186 Korea
| | - Ho-Joong Kim
- Department of Chemistry; Chosun University; Gwangju 61452 Korea
| | - Si Kyung Yang
- Department of Chemistry Education; Chonnam National University; Gwangju 61186 Korea
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38
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Li DS, Yang JF, Zhao J. Detection of site-dependent segmental mobility of polymer by fluorescent defocused imaging. CHINESE JOURNAL OF POLYMER SCIENCE 2017. [DOI: 10.1007/s10118-017-1976-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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39
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Jia F, Lu X, Wang D, Cao X, Tan X, Lu H, Zhang K. Depth-Profiling the Nuclease Stability and the Gene Silencing Efficacy of Brush-Architectured Poly(ethylene glycol)-DNA Conjugates. J Am Chem Soc 2017; 139:10605-10608. [PMID: 28737410 PMCID: PMC9001160 DOI: 10.1021/jacs.7b05064] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
PEGylation of an oligonucleotide using a brush polymer can improve its biopharmaceutical characteristics, including enzymatic stability and biodistribution. Herein, we quantitatively explore the nuclease accessibility of the nucleic acid as a function of "depth" toward the backbone of the brush polymer. It is found that protein accessibility decreases as the nucleotide is located closer to the backbone. Thus, by moving the conjugation point from the terminus of the nucleic acid strand to an internal position, much smaller brushes can be used to achieve the same level of steric shielding. This finding also makes it possible to assess antisense gene regulation efficiency of these brush-DNA conjugates as a function of their nuclease stability.
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Affiliation(s)
- Fei Jia
- Department of Chemistry and Chemical Biology, Northeastern University , Boston, Massachusetts 02115, United States
| | - Xueguang Lu
- Department of Chemistry and Chemical Biology, Northeastern University , Boston, Massachusetts 02115, United States
| | - Dali Wang
- Department of Chemistry and Chemical Biology, Northeastern University , Boston, Massachusetts 02115, United States
| | - Xueyan Cao
- Department of Chemistry and Chemical Biology, Northeastern University , Boston, Massachusetts 02115, United States
| | - Xuyu Tan
- Department of Chemistry and Chemical Biology, Northeastern University , Boston, Massachusetts 02115, United States
| | - Hao Lu
- Department of Chemistry and Chemical Biology, Northeastern University , Boston, Massachusetts 02115, United States
| | - Ke Zhang
- Department of Chemistry and Chemical Biology, Northeastern University , Boston, Massachusetts 02115, United States
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40
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Nguyen HVT, Chen Q, Paletta JT, Harvey P, Jiang Y, Zhang H, Boska MD, Ottaviani MF, Jasanoff A, Rajca A, Johnson JA. Nitroxide-Based Macromolecular Contrast Agents with Unprecedented Transverse Relaxivity and Stability for Magnetic Resonance Imaging of Tumors. ACS CENTRAL SCIENCE 2017; 3:800-811. [PMID: 28776023 PMCID: PMC5532724 DOI: 10.1021/acscentsci.7b00253] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Indexed: 05/18/2023]
Abstract
Metal-free magnetic resonance imaging (MRI) agents could overcome the established toxicity associated with metal-based agents in some patient populations and enable new modes of functional MRI in vivo. Herein, we report nitroxide-functionalized brush-arm star polymer organic radical contrast agents (BASP-ORCAs) that overcome the low contrast and poor in vivo stability associated with nitroxide-based MRI contrast agents. As a consequence of their unique nanoarchitectures, BASP-ORCAs possess per-nitroxide transverse relaxivities up to ∼44-fold greater than common nitroxides, exceptional stability in highly reducing environments, and low toxicity. These features combine to provide for accumulation of a sufficient concentration of BASP-ORCA in murine subcutaneous tumors up to 20 h following systemic administration such that MRI contrast on par with metal-based agents is observed. BASP-ORCAs are, to our knowledge, the first nitroxide MRI contrast agents capable of tumor imaging over long time periods using clinical high-field 1H MRI techniques.
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Affiliation(s)
- Hung V.-T. Nguyen
- Department
of Chemistry, Department of Biological Engineering, Department of Brain
and Cognitive Sciences, and Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Qixian Chen
- Department
of Chemistry, Department of Biological Engineering, Department of Brain
and Cognitive Sciences, and Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Joseph T. Paletta
- Department
of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, United States
| | - Peter Harvey
- Department
of Chemistry, Department of Biological Engineering, Department of Brain
and Cognitive Sciences, and Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Yivan Jiang
- Department
of Chemistry, Department of Biological Engineering, Department of Brain
and Cognitive Sciences, and Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Hui Zhang
- Department
of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, United States
| | - Michael D. Boska
- Department
of Radiology, University of Nebraska Medical
Center, Omaha, Nebraska 68198, United
States
| | | | - Alan Jasanoff
- Department
of Chemistry, Department of Biological Engineering, Department of Brain
and Cognitive Sciences, and Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Andrzej Rajca
- Department
of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, United States
| | - Jeremiah A. Johnson
- Department
of Chemistry, Department of Biological Engineering, Department of Brain
and Cognitive Sciences, and Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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41
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Zhang J, Shen H, Song W, Wang G. Synthesis and Characterization of Novel Copolymers with Different Topological Structures and TEMPO Radical Distributions. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00159] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jiaxing Zhang
- State
Key Laboratory of Molecular Engineering of Polymers, Collaborative
Innovation Center of Polymers and Polymer Composite Materials, Department
of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Hongying Shen
- State
Key Laboratory of Molecular Engineering of Polymers, Collaborative
Innovation Center of Polymers and Polymer Composite Materials, Department
of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Wenguang Song
- State
Key Laboratory of Molecular Engineering of Polymers, Collaborative
Innovation Center of Polymers and Polymer Composite Materials, Department
of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Guowei Wang
- State
Key Laboratory of Molecular Engineering of Polymers, Collaborative
Innovation Center of Polymers and Polymer Composite Materials, Department
of Macromolecular Science, Fudan University, Shanghai 200433, China
- Joint
Laboratory for Adsorption and Separation Materials of Zhejiang University-Zhejiang
Tobacco Industry Co. Ltd., Zhejiang University, Hangzhou 310027, China
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42
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Wang J, Wu Z, Shen H, Wang G. Synthesis, characterization and the paramagnetic properties of bottle-brush copolymers with shielding TEMPO radicals. Polym Chem 2017. [DOI: 10.1039/c7py01683b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Bottle-brush copolymers PHEMA-g-[(PAA-g-TEMPO)-b-PMA] and PHEMA-g-(PAA-g-TEMPO) with shielding TEMPO radicals were synthesized. The paramagnetic properties in bulk and solution were studied, and the results confirmed that the presence of the outer segment played an important role on the EPR spectra of copolymers.
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Affiliation(s)
- Jian Wang
- School of Science
- North University of China
- Taiyuan 030006
- China
- State Key Laboratory of Molecular Engineering of Polymers
| | - Zhigang Wu
- School of Science
- North University of China
- Taiyuan 030006
- China
| | - Hongying Shen
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Centre of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
| | - Guowei Wang
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Centre of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
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43
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Slegeris R, Ondrusek BA, Chung H. Catechol- and ketone-containing multifunctional bottlebrush polymers for oxime ligation and hydrogel formation. Polym Chem 2017. [DOI: 10.1039/c7py01112a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We report the synthesis of a highly-functional macromonomer, and subsequent crosslinkable poly(ethylene glycol) (PEG)-based bottlebrush polymers prepared via graft-through ring-opening metathesis polymerization (ROMP).
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Affiliation(s)
- Rimantas Slegeris
- Department of Chemical and Biomedical Engineering
- Florida State University
- Tallahassee
- USA
| | - Brian A. Ondrusek
- Department of Chemical and Biomedical Engineering
- Florida State University
- Tallahassee
- USA
| | - Hoyong Chung
- Department of Chemical and Biomedical Engineering
- Florida State University
- Tallahassee
- USA
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44
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Jho Y, Yoo HY, Lin Y, Han S, Hwang DS. Molecular and structural basis of low interfacial energy of complex coacervates in water. Adv Colloid Interface Sci 2017; 239:61-73. [PMID: 27499328 DOI: 10.1016/j.cis.2016.07.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 07/12/2016] [Accepted: 07/14/2016] [Indexed: 12/26/2022]
Abstract
Complex coacervate refers to a phase-separated fluid, typically of two oppositely charged polyelectrolytes in solution, representing a complex fluid system that has been shown to be of essential interest to biological systems, as well as for soft materials processing owing to the expectation of superior underwater coating or adhesion properties. The significance and interest in complex coacervate fluids critically rely on its low interfacial tension with respect to water that, in turn, facilitates the wetting of macromolecular or material surfaces under aqueous conditions, provided there is attractive interaction between the polyelectrolyte constituents and the surface. However, the molecular and structural bases of these properties remain unclear. Recent studies propose that the formation of water-filled and bifluidic sponge-like nanostructured network, driven by the tuning of electrostatic interactions between the polyelectrolyte constituents or their complexes may be a common feature of complex coacervate fluids that display low fluid viscosity and low interfacial tension, but more studies are needed to verify the generality of these observations. In this review, we summarize representative studies of interfacial tension and ultrastructures of complex coacervate fluids. We highlight that a consensus property of the complex coacervate fluid is the observation of high or even bulk-like water dynamics within the dense complex coacervate phase that is consistent with a low cohesive energy fluid. Our own studies on this subject are enabled by the application of magnetic resonance relaxometry methods relying on spin labels tethered to polyelectrolyte constituents or added as spin labeled probe molecules that partition into the dense versus the equilibrium coacervate phase, permitting the extraction of information on local polymer dynamics, polymer packing and local water dynamics. We conclude with a snapshot of our current perspective on the molecular and structural bases of the low interfacial tension of complex coacervate fluids.
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Affiliation(s)
- YongSeok Jho
- Center for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
| | - Hee Young Yoo
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Yanxian Lin
- Biomolecular Science and Engineering, University of California Santa Barbara, Santa Barbara, CA 93106, USA
| | - Songi Han
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA 93106, USA; Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, CA 93106, USA.
| | - Dong Soo Hwang
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea; School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.
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45
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Sultani HN, Haeri HH, Hinderberger D, Westermann B. Spin-labelled diketopiperazines and peptide-peptoid chimera by Ugi-multi-component-reactions. Org Biomol Chem 2016; 14:11336-11341. [PMID: 27878155 DOI: 10.1039/c6ob02194h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
For the first time, spin-labelled coumpounds have been obtained by isonitrile-based multi component reactions (IMCRs). The typical IMCR Ugi-protocols offer a simple experimental setup allowing structural variety by which labelled diketopiperazines (DKPs) and peptide-peptoid chimera have been synthesized. The reaction keeps the paramagnetic spin label intact and offers a simple and versatile route to a large variety of new and chemically diverse spin labels.
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Affiliation(s)
- Haider N Sultani
- Leibniz-Institute of Plant Biochemistry, Department of Bioorganic Chemistry, Weinberg 3, 06120 Halle, Germany.
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46
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Tang S, Puryear WB, Seifried BM, Dong X, Runstadler JA, Ribbeck K, Olsen BD. Antiviral Agents from Multivalent Presentation of Sialyl Oligosaccharides on Brush Polymers. ACS Macro Lett 2016; 5:413-418. [PMID: 35614714 DOI: 10.1021/acsmacrolett.5b00917] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Bioinspired brush polymers containing α-2,6-linked sialic acids at the side chain termini were synthesized by protection-group-free, ring-opening metathesis polymerization. Polymers showed strain-selective antiviral activity through multivalent presentation of the sialosides. The multivalent effect was further controlled by independently varying the degree of polymerization, the number density of sialic acids, and the length of side chains in the brush polymers. Optimizing the three-dimensional sialoside spacing for better binding to hemagglutinin trimers was of critical importance to enhance the multivalent effect and the antiviral activity determined by hemagglutination inhibition assays and in vitro infection assays. By taking advantage of their structural similarities with native mucins, these brush polymers can be used as model systems to dissect the intricate design principles in natural mucins.
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Affiliation(s)
- Shengchang Tang
- Department of Chemical Engineering, ‡Department of Biological Engineering, and §Division of Comparative
Medicine, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Wendy B. Puryear
- Department of Chemical Engineering, ‡Department of Biological Engineering, and §Division of Comparative
Medicine, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Brian M. Seifried
- Department of Chemical Engineering, ‡Department of Biological Engineering, and §Division of Comparative
Medicine, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Xuehui Dong
- Department of Chemical Engineering, ‡Department of Biological Engineering, and §Division of Comparative
Medicine, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Jonathan A. Runstadler
- Department of Chemical Engineering, ‡Department of Biological Engineering, and §Division of Comparative
Medicine, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Katharina Ribbeck
- Department of Chemical Engineering, ‡Department of Biological Engineering, and §Division of Comparative
Medicine, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Bradley D. Olsen
- Department of Chemical Engineering, ‡Department of Biological Engineering, and §Division of Comparative
Medicine, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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47
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Lloveras V, Badetti E, Wurst K, Chechik V, Veciana J, Vidal-Gancedo J. Magnetic and Electrochemical Properties of a TEMPO-Substituted Disulfide Diradical in Solution, in the Crystal, and on a Surface. Chemistry 2016; 22:1805-15. [PMID: 26743879 DOI: 10.1002/chem.201503306] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 11/09/2015] [Indexed: 12/15/2022]
Abstract
A study of the magnetic and electrochemical properties of a TEMPO-substituted disulfide diradical in three different environments was carried out: in solution, in the crystal, and as a self-assembled monolayer (SAM) on an Au(111) substrate, and the relationship between them was explored. In solution, this flexible diradical shows a strong spin-exchange interaction between the two nitroxide functions that depends on the temperature and solvent. Structural, dynamic, and thermodynamic information has been extracted from the EPR spectra of this dinitroxide. The magnetic interactions in the crystal include intra- and intermolecular contributions, which have been studied separately and shown to be antiferromagnetic in both cases. Finally, we demonstrate that both the magnetic and electrochemical properties are preserved upon chemisorption of the diradical on a gold surface. The resulting SAM displayed anisotropic magnetic properties, and angle-resolved EPR spectra of the monocrystal allowed a rough determination of the orientation of the molecules in the SAM.
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Affiliation(s)
- Vega Lloveras
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB s/n, 08193, Cerdanyola del Vallès, Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN), Barcelona, Spain), Fax
| | - Elena Badetti
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB s/n, 08193, Cerdanyola del Vallès, Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN), Barcelona, Spain), Fax
| | - Klaus Wurst
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Center for Chemistry and Biomedicine, Innrain 80-82, 6020, Innsbruck, Austria
| | - Victor Chechik
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| | - Jaume Veciana
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB s/n, 08193, Cerdanyola del Vallès, Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN), Barcelona, Spain), Fax
| | - José Vidal-Gancedo
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB s/n, 08193, Cerdanyola del Vallès, Spain. .,CIBER de Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN), Barcelona, Spain), Fax.
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48
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Newcomb CJ, Sur S, Ortony JH, Lee OS, Matson JB, Boekhoven J, Yu JM, Schatz GC, Stupp SI. Cell death versus cell survival instructed by supramolecular cohesion of nanostructures. Nat Commun 2015; 5:3321. [PMID: 24531236 PMCID: PMC3982852 DOI: 10.1038/ncomms4321] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Accepted: 01/27/2014] [Indexed: 12/14/2022] Open
Abstract
Many naturally occurring peptides containing cationic and hydrophobic domains have evolved to interact with mammalian cell membranes and have been incorporated into materials for non-viral gene delivery, cancer therapy, or treatment of microbial infections. Their electrostatic attraction to the negatively charged cell surface and hydrophobic interactions with the membrane lipids enable intracellular delivery or cell lysis. While the effects of hydrophobicity and cationic charge of soluble molecules on the cell membrane are well known, the interactions between materials with these molecular features and cells remain poorly understood. Here we report that varying the cohesive forces within nanofibres of supramolecular materials with nearly identical cationic and hydrophobic structure instruct cell death or cell survival. Weak intermolecular bonds promote cell death through disruption of lipid membranes, while materials reinforced by hydrogen bonds support cell viability. These findings provide new strategies to design biomaterials that interact with the cell membrane.
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Affiliation(s)
- Christina J Newcomb
- 1] Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA [2]
| | - Shantanu Sur
- 1] The Institute for BioNanotechnology in Medicine, Northwestern University, Chicago, Illinois 60611, USA [2]
| | - Julia H Ortony
- The Institute for BioNanotechnology in Medicine, Northwestern University, Chicago, Illinois 60611, USA
| | - One-Sun Lee
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA
| | - John B Matson
- The Institute for BioNanotechnology in Medicine, Northwestern University, Chicago, Illinois 60611, USA
| | - Job Boekhoven
- The Institute for BioNanotechnology in Medicine, Northwestern University, Chicago, Illinois 60611, USA
| | - Jeong Min Yu
- The Institute for BioNanotechnology in Medicine, Northwestern University, Chicago, Illinois 60611, USA
| | - George C Schatz
- 1] Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA [2] Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, USA
| | - Samuel I Stupp
- 1] Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA [2] The Institute for BioNanotechnology in Medicine, Northwestern University, Chicago, Illinois 60611, USA [3] Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA [4] Department of Medicine, Northwestern University, Chicago, Illinois 60611, USA
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Teo YC, Xia Y. Importance of Macromonomer Quality in the Ring-Opening Metathesis Polymerization of Macromonomers. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01176] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yew Chin Teo
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Yan Xia
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
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Verduzco R, Li X, Pesek SL, Stein GE. Structure, function, self-assembly, and applications of bottlebrush copolymers. Chem Soc Rev 2015; 44:2405-20. [PMID: 25688538 DOI: 10.1039/c4cs00329b] [Citation(s) in RCA: 430] [Impact Index Per Article: 47.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Bottlebrush polymers are a type of branched or graft polymer with polymeric side-chains attached to a linear backbone, and the unusual architectures of bottlebrushes provide a number of unique and potentially useful properties. These include a high entanglement molecular weight, enabling rapid self-assembly of bottlebrush block copolymers into large domain structures, the self-assembly of bottlebrush block copolymer micelles in a selective solvent even at very low dilutions, and the functionalization of bottlebrush side-chains for recognition, imaging, or drug delivery in aqueous environments. This review article focuses on recent developments in the field of bottlebrush polymers with an emphasis on applications of bottlebrush copolymers. Bottlebrush copolymers contain two (or more) different types of polymeric side-chains. Recent work has explored the diverse properties and functions of bottlebrush polymers and copolymers in solutions, films, and melts, and applications explored include photonic materials, bottlebrush films for lithographic patterning, drug delivery, and tumor detection and imaging. We provide a brief introduction to bottlebrush synthesis and physical properties and then discuss work related to: (i) bottlebrush self-assembly in melts and bulk thin films, (ii) bottlebrushes for photonics and lithography, (iii) bottlebrushes for small molecule encapsulation and delivery in solution, and (iv) bottlebrush micelles and assemblies in solution. We briefly discuss three potential areas for future research, including developing a more quantitative model of bottlebrush self-assembly in the bulk, studying the properties of bottlebrushes at interfaces, and investigating the solution assembly of bottlebrush copolymers.
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Affiliation(s)
- Rafael Verduzco
- Department of Chemical and Biomolecular Engineering, William Marsh Rice University, 6100 Main Street, MS-362, Houston, TX 77005, USA.
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