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Hechenbichler M, Prause A, Gradzielski M, Laschewsky A. Thermoresponsive Self-Assembly of Twofold Fluorescently Labeled Block Copolymers in Aqueous Solution and Microemulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5166-5182. [PMID: 34734729 DOI: 10.1021/acs.langmuir.1c02318] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A nonionic double hydrophilic block copolymer with a long permanently hydrophilic and a small thermoresponsive block is synthesized by reversible addition-fragmentation chain-transfer polymerization (RAFT). By employing a specifically designed chain-transfer agent, the polymer is functionalized with complementary end groups which are suited for Förster resonance energy transfer (FRET). The end group attached to the permanently hydrophilic block of poly(N,N-dimethylacrylamide) pDMAm is designed as a permanently hydrophobic segment ("sticker") comprising a long alkyl chain and the 4-aminonaphthalimide fluorophore. The other end attached to the thermoresponsive block of poly(N-isopropylacrylamide) pNiPAm incorporates a coumarin fluorophore. The temperature-dependent self-assembly of the twofold fluorescently labeled copolymer is studied in pure aqueous solution as well as in an o/w microemulsion by several techniques including turbidimetry, dynamic light scattering (DLS), and fluorescence spectroscopy. It is compared to the behaviors of the analogous twofold-labeled pDMAm and pNiPAm homopolymer references. The findings indicate that the block copolymer behaves as a polymeric surfactant at low temperatures, with one relatively small hydrophobic end block and an extended hydrophilic chain forming "hairy micelles". At elevated temperatures above the LCST phase transition of the pNiPAm block, however, the copolymer behaves as an associative telechelic polymer with two nonsymmetrical hydrophobic end blocks, which do not mix. Thus, instead of a network of bridged "flower micelles", large dynamic aggregates are formed. These are connected alternatingly by the original micellar cores as well as by clusters of the collapsed pNiPAm blocks. This type of structure is even more favored in the o/w microemulsion than in pure aqueous solution, as the microemulsion droplets constitute an attractive anchoring point for the hydrophobic dodecyl sticker but not for the collapsed pNiPAm chains.
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Affiliation(s)
- Michelle Hechenbichler
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam-Golm, Germany
| | - Albert Prause
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, FG Physical Chemistry/Molecular Material Science Institute of Chemistry, Technische Universität Berlin, Straße des 17 Juni 124, 10623 Berlin, Germany
| | - Michael Gradzielski
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, FG Physical Chemistry/Molecular Material Science Institute of Chemistry, Technische Universität Berlin, Straße des 17 Juni 124, 10623 Berlin, Germany
| | - André Laschewsky
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam-Golm, Germany
- Fraunhofer Institute of Applied Polymer Research IAP, Fraunhofer Institute, Geiselbergstr. 69, 14476 Potsdam-Golm, Germany
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2
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Li Z, Cai B, Yang W, Chen CL. Hierarchical Nanomaterials Assembled from Peptoids and Other Sequence-Defined Synthetic Polymers. Chem Rev 2021; 121:14031-14087. [PMID: 34342989 DOI: 10.1021/acs.chemrev.1c00024] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In nature, the self-assembly of sequence-specific biopolymers into hierarchical structures plays an essential role in the construction of functional biomaterials. To develop synthetic materials that can mimic and surpass the function of these natural counterparts, various sequence-defined bio- and biomimetic polymers have been developed and exploited as building blocks for hierarchical self-assembly. This review summarizes the recent advances in the molecular self-assembly of hierarchical nanomaterials based on peptoids (or poly-N-substituted glycines) and other sequence-defined synthetic polymers. Modern techniques to monitor the assembly mechanisms and characterize the physicochemical properties of these self-assembly systems are highlighted. In addition, discussions about their potential applications in biomedical sciences and renewable energy are also included. This review aims to highlight essential features of sequence-defined synthetic polymers (e.g., high stability and protein-like high-information content) and how these unique features enable the construction of robust biomimetic functional materials with high programmability and predictability, with an emphasis on peptoids and their self-assembled nanomaterials.
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Affiliation(s)
- Zhiliang Li
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States.,Institute of Molecular Science and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, Shandong 266237, China
| | - Bin Cai
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States.,School of Chemistry and Chemical Engineering, Shandong University, Shandong 250100, China
| | - Wenchao Yang
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States.,School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Chun-Long Chen
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States.,Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States
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3
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Gruschwitz FV, Klein T, Catrouillet S, Brendel JC. Supramolecular polymer bottlebrushes. Chem Commun (Camb) 2020; 56:5079-5110. [PMID: 32347854 DOI: 10.1039/d0cc01202e] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The field of supramolecular chemistry has long been known to generate complex materials of different sizes and shapes via the self-assembly of single or multiple low molar mass building blocks. Matching the complexity found in natural assemblies, however, remains a long-term challenge considering its precision in organizing large macromolecules into well-defined nanostructures. Nevertheless, the increasing understanding of supramolecular chemistry has paved the way to several attempts in arranging synthetic macromolecules into larger ordered structures based on non-covalent forces. This review is a first attempt to summarize the developments in this field, which focus mainly on the formation of one-dimensional, linear, cylindrical aggregates in solution with pendant polymer chains - therefore coined supramolecular polymer bottlebrushes in accordance with their covalent equivalents. Distinguishing by the different supramolecular driving forces, we first describe systems based on π-π interactions, which comprise, among others, the well-known perylene motif, but also the early attempts using cyclophanes. However, the majority of reported supramolecular polymer bottlebrushes are formed by hydrogen bonds as they can for example be found in linear and cyclic peptides, as well as so called sticker molecules containing multiple urea groups. Besides this overview on the reported motifs and their impact on the resulting morphology of the polymer nanostructures, we finally highlight the potential benefits of such non-covalent interactions and refer to promising future directions of this still mostly unrecognized field of supramolecular research.
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Affiliation(s)
- Franka V Gruschwitz
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany.
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Klein T, Gruschwitz FV, Rogers S, Hoeppener S, Nischang I, Brendel JC. The influence of directed hydrogen bonds on the self-assembly of amphiphilic polymers in water. J Colloid Interface Sci 2019; 557:488-497. [PMID: 31541918 DOI: 10.1016/j.jcis.2019.09.046] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 09/11/2019] [Accepted: 09/12/2019] [Indexed: 12/16/2022]
Abstract
HYPOTHESIS Molecules forming directed intermolecular hydrogen bonds, such as the well-known benzene-1,3,5-tricarboxamides (BTA) motif, are known to self-assemble into long fibrous structures. However, only a few of these systems have so far demonstrated the ability to form such anisotropic nanostructures, if they are combined with hydrophilic polymers to create an amphiphilic material. Here, we designed BTA-polymer conjugates to investigate whether the directionality of the hydrogen bonds or the ratio of hydrophobic to hydrophilic parts of the molecule, and thus the packing parameter, is decisive for obtaining anisotropic supramolecular structures in water. EXPERIMENTS Poly(ethylene glycol) was conjugated to BTA moieties with varying lengths of hydrophobic alkyl spacers ranging from two to twelve methylene units. The resulting amphiphilic materials were characterized in aqueous solution by light and small-angle neutron scattering, analytical ultracentrifugation, and cryo-transmission electron microscopy. FINDINGS While spherical micelles were observed for C6 and C10 alkyl spacers, anisotropic structures were only present in case of the C12 spacer. The comparison to an analogous material, which lacks the directed hydrogen bonds, revealed that the BTA motif cannot provide a sufficient driving force to induce anisotropic structures, but increases the packing density in the hydrophobic part. Therefore, the packing parameter governs the appearance of anisotropic aggregates.
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Affiliation(s)
- Tobias Klein
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Franka V Gruschwitz
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Sarah Rogers
- ISIS Neutron Facility, Rutherford Appleton Laboratory, Harwell Oxford, Didcot OX11 0QX, United Kingdom
| | - Stephanie Hoeppener
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Ivo Nischang
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Johannes C Brendel
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany.
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Tuning the life-time of supramolecular hydrogels using ROS-responsive telechelic peptide-polymer conjugates. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2018.11.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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6
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Otter R, Besenius P. Supramolecular assembly of functional peptide–polymer conjugates. Org Biomol Chem 2019; 17:6719-6734. [DOI: 10.1039/c9ob01191a] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The following review gives an overview about synthetic peptide–polymer conjugates as macromolecular building blocks and their self-assembly into a variety of supramolecular architectures, from supramolecular polymer chains, to anisotropic 1D arrays, 2D layers, and more complex 3D networks.
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Affiliation(s)
- Ronja Otter
- Institute of Organic Chemistry
- Johannes Gutenberg-University Mainz
- 55128 Mainz
- Germany
| | - Pol Besenius
- Institute of Organic Chemistry
- Johannes Gutenberg-University Mainz
- 55128 Mainz
- Germany
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7
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Zhang Z, Hou Z, Qiao C, Zhu C, Zhou K, Xu X, Li T, Xu J. Electrostatic and hydrophobic controlled self-assembly of PDMS-E grafted gelatin for self-cleaning application. Colloids Surf B Biointerfaces 2018; 171:647-655. [DOI: 10.1016/j.colsurfb.2018.08.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 07/16/2018] [Accepted: 08/06/2018] [Indexed: 12/29/2022]
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8
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Otter R, Henke NA, Berac C, Bauer T, Barz M, Seiffert S, Besenius P. Secondary Structure-Driven Hydrogelation Using Foldable Telechelic Polymer-Peptide Conjugates. Macromol Rapid Commun 2018; 39:e1800459. [DOI: 10.1002/marc.201800459] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 06/28/2018] [Indexed: 12/17/2022]
Affiliation(s)
- Ronja Otter
- Institute of Organic Chemistry; Johannes Gutenberg University Mainz; Duesbergweg 10-14 D-55128 Mainz Germany
| | - Nina Alexandra Henke
- Institute of Organic Chemistry; Johannes Gutenberg University Mainz; Duesbergweg 10-14 D-55128 Mainz Germany
| | - Christian Berac
- Institute of Organic Chemistry; Johannes Gutenberg University Mainz; Duesbergweg 10-14 D-55128 Mainz Germany
| | - Tobias Bauer
- Institute of Organic Chemistry; Johannes Gutenberg University Mainz; Duesbergweg 10-14 D-55128 Mainz Germany
| | - Matthias Barz
- Institute of Organic Chemistry; Johannes Gutenberg University Mainz; Duesbergweg 10-14 D-55128 Mainz Germany
| | - Sebastian Seiffert
- Institute of Physical Chemistry; Johannes Gutenberg University Mainz; Duesbergweg 10-14 D-55128 Mainz Germany
| | - Pol Besenius
- Institute of Organic Chemistry; Johannes Gutenberg University Mainz; Duesbergweg 10-14 D-55128 Mainz Germany
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9
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Chen C, Thang SH. RAFT polymerization of a RGD peptide-based methacrylamide monomer for cell adhesion. Polym Chem 2018. [DOI: 10.1039/c7py01887h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The present study provides a robust method for the preparation of RGD peptide-based polymers that has important implications in the synthesized biomaterials that support cell adhesion.
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Affiliation(s)
- Chao Chen
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering; College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - San H. Thang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering; College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
- School of Chemistry
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10
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Otter R, Klinker K, Spitzer D, Schinnerer M, Barz M, Besenius P. Folding induced supramolecular assembly into pH-responsive nanorods with a protein repellent shell. Chem Commun (Camb) 2018; 54:401-404. [DOI: 10.1039/c7cc08127h] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
ABA′ triblock peptide–polysarcosine–peptide conjugates fold into antiparallel β-sheets, which promotes the self-assembly into polysarcosine-shielded core–shell nanorods with protein repellent properties.
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Affiliation(s)
- R. Otter
- Institute of Organic Chemistry
- Johannes Gutenberg-University Mainz
- D-55128 Mainz
- Germany
| | - K. Klinker
- Institute of Organic Chemistry
- Johannes Gutenberg-University Mainz
- D-55128 Mainz
- Germany
- Graduate School of Materials Science in Mainz
| | - D. Spitzer
- Institute of Organic Chemistry
- Johannes Gutenberg-University Mainz
- D-55128 Mainz
- Germany
| | - M. Schinnerer
- Institute of Physical Chemistry
- Johannes Gutenberg-University Mainz
- D-55128 Mainz
- Germany
| | - M. Barz
- Institute of Organic Chemistry
- Johannes Gutenberg-University Mainz
- D-55128 Mainz
- Germany
| | - P. Besenius
- Institute of Organic Chemistry
- Johannes Gutenberg-University Mainz
- D-55128 Mainz
- Germany
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11
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Celasun S, Du Prez FE, Börner HG. PEGylated Precision Segments Based on Sequence-Defined Thiolactone Oligomers. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201700688] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 10/16/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Sensu Celasun
- Laboratory for Organic Synthesis of Functional Systems; Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 D-12489 Berlin Germany
| | - Filip E. Du Prez
- Polymer Chemistry Research Group; Centre of Macromolecular Chemistry (CMaC); Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 S4 9000 Ghent Belgium
| | - Hans G. Börner
- Laboratory for Organic Synthesis of Functional Systems; Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 D-12489 Berlin Germany
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12
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ten Brummelhuis N, Wilke P, Börner HG. Identification of Functional Peptide Sequences to Lead the Design of Precision Polymers. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201700632] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 09/26/2017] [Indexed: 12/16/2022]
Affiliation(s)
- Niels ten Brummelhuis
- Laboratory for Organic Synthesis of Functional Systems; Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 D-12489 Berlin Germany
| | - Patrick Wilke
- Laboratory for Organic Synthesis of Functional Systems; Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 D-12489 Berlin Germany
| | - Hans G. Börner
- Laboratory for Organic Synthesis of Functional Systems; Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 D-12489 Berlin Germany
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13
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Hybrid gels by conjugation of hyaluronic acid with poly(itaconic anhydride-co-3,9-divinyl-2,4,8,10-tetraoxaspiro (5.5)undecane) copolymers. Int J Biol Macromol 2017; 98:407-418. [DOI: 10.1016/j.ijbiomac.2017.01.116] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/11/2017] [Accepted: 01/25/2017] [Indexed: 01/08/2023]
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14
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Besenius P. Controlling supramolecular polymerization through multicomponent self-assembly. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28385] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Pol Besenius
- Institute of Organic Chemistry, Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 Mainz 55128 Germany
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15
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Smolne S, Weber S, Buback M. Propagation and Termination Kinetics of Poly(Ethylene Glycol) Methyl Ether Methacrylate in Aqueous Solution. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600302] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sebastian Smolne
- Institute for Physical Chemistry; University of Göttingen; Tammannstr. 6 37077 Göttingen Germany
| | - Stella Weber
- Institute for Physical Chemistry; University of Göttingen; Tammannstr. 6 37077 Göttingen Germany
| | - Michael Buback
- Institute for Physical Chemistry; University of Göttingen; Tammannstr. 6 37077 Göttingen Germany
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16
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Boyer C, Corrigan NA, Jung K, Nguyen D, Nguyen TK, Adnan NNM, Oliver S, Shanmugam S, Yeow J. Copper-Mediated Living Radical Polymerization (Atom Transfer Radical Polymerization and Copper(0) Mediated Polymerization): From Fundamentals to Bioapplications. Chem Rev 2015; 116:1803-949. [DOI: 10.1021/acs.chemrev.5b00396] [Citation(s) in RCA: 356] [Impact Index Per Article: 39.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Cyrille Boyer
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Nathaniel Alan Corrigan
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Kenward Jung
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Diep Nguyen
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Thuy-Khanh Nguyen
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Nik Nik M. Adnan
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Susan Oliver
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Sivaprakash Shanmugam
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Jonathan Yeow
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
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Moatsou D, Li J, Ranji A, Pitto-Barry A, Ntai I, Jewett MC, O’Reilly RK. Self-Assembly of Temperature-Responsive Protein-Polymer Bioconjugates. Bioconjug Chem 2015; 26:1890-9. [PMID: 26083370 PMCID: PMC4577958 DOI: 10.1021/acs.bioconjchem.5b00264] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 06/12/2015] [Indexed: 12/13/2022]
Abstract
We report a simple temperature-responsive bioconjugate system comprising superfolder green fluorescent protein (sfGFP) decorated with poly[(oligo ethylene glycol) methyl ether methacrylate] (PEGMA) polymers. We used amber suppression to site-specifically incorporate the non-canonical azide-functional amino acid p-azidophenylalanine (pAzF) into sfGFP at different positions. The azide moiety on modified sfGFP was then coupled using copper-catalyzed "click" chemistry with the alkyne terminus of a PEGMA synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization. The protein in the resulting bioconjugate was found to remain functionally active (i.e., fluorescent) after conjugation. Turbidity measurements revealed that the point of attachment of the polymer onto the protein scaffold has an impact on the thermoresponsive behavior of the resultant bioconjugate. Furthermore, small-angle X-ray scattering analysis showed the wrapping of the polymer around the protein in a temperature-dependent fashion. Our work demonstrates that standard genetic manipulation combined with an expanded genetic code provides an easy way to construct functional hybrid biomaterials where the location of the conjugation site on the protein plays an important role in determining material properties. We anticipate that our approach could be generalized for the synthesis of complex functional materials with precisely defined domain orientation, connectivity, and composition.
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Affiliation(s)
- Dafni Moatsou
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Jian Li
- Department
of Chemical and Biological Engineering, Chemistry of Life Processes
Institute, Northwestern University, Evanston, Illinois 60208, United States
| | - Arnaz Ranji
- Department
of Chemical and Biological Engineering, Chemistry of Life Processes
Institute, Northwestern University, Evanston, Illinois 60208, United States
| | - Anaïs Pitto-Barry
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Ioanna Ntai
- Department
of Chemical and Biological Engineering, Chemistry of Life Processes
Institute, Northwestern University, Evanston, Illinois 60208, United States
| | - Michael C. Jewett
- Department
of Chemical and Biological Engineering, Chemistry of Life Processes
Institute, Northwestern University, Evanston, Illinois 60208, United States
| | - Rachel K. O’Reilly
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
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18
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Breucker L, Schöttler S, Landfester K, Taden A. Polyurethane Dispersions with Peptide Corona: Facile Synthesis of Stimuli-Responsive Dispersions and Films. Biomacromolecules 2015; 16:2418-26. [DOI: 10.1021/acs.biomac.5b00672] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Laura Breucker
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Henkel AG & Co. KGaA, Adhesive Research, Henkelstrasse 67, 40589 Düsseldorf, Germany
| | - Susanne Schöttler
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Katharina Landfester
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Andreas Taden
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Henkel AG & Co. KGaA, Adhesive Research, Henkelstrasse 67, 40589 Düsseldorf, Germany
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19
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Saha A, Paira TK, Biswas M, Jana S, Banerjee S, Mandal TK. Combined atom-transfer radical polymerization and ring-opening polymerization to design polymer-polypeptide copolymer conjugates toward self-aggregated hybrid micro/nanospheres for dye encapsulation. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27713] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Anupam Saha
- Polymer Science Unit; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700 032 India
| | - Tapas K. Paira
- Polymer Science Unit; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700 032 India
| | - Mrinmoy Biswas
- Polymer Science Unit; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700 032 India
| | - Somdeb Jana
- Polymer Science Unit; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700 032 India
| | - Sanjib Banerjee
- Polymer Science Unit; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700 032 India
| | - Tarun K. Mandal
- Polymer Science Unit; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700 032 India
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20
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Kedracki D, Filippov SK, Gour N, Schlaad H, Nardin C. Formation of DNA-Copolymer Fibrils Through an Amyloid-Like Nucleation Polymerization Mechanism. Macromol Rapid Commun 2015; 36:768-73. [DOI: 10.1002/marc.201400728] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 01/19/2015] [Indexed: 12/12/2022]
Affiliation(s)
- Dawid Kedracki
- Department of Inorganic and Analytical Chemistry; University of Geneva; Quai Ernest Ansermet 30, 1211, Geneva 4 Switzerland
| | - Sergey K. Filippov
- Institute of Macromolecular Chemistry; AS CR, Heyrovsky Sq. 2 Prague Prague 6 162 06 Czech Republic
| | - Nidhi Gour
- Department of Inorganic and Analytical Chemistry; University of Geneva; Quai Ernest Ansermet 30, 1211, Geneva 4 Switzerland
| | - Helmut Schlaad
- Institute of Chemistry; University of Potsdam; Karl-Liebknecht-Straße 24-25 14476 Potsdam Germany
- Max Planck Institute of Colloids and Interfaces; Department of Colloid Chemistry; Research Campus Golm; 14424 Potsdam Germany
| | - Corinne Nardin
- Department of Inorganic and Analytical Chemistry; University of Geneva; Quai Ernest Ansermet 30, 1211, Geneva 4 Switzerland
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21
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Wilke P, Börner HG. Revealing the impact of poly(ethylene oxide) blocks on enzyme activable coatings from peptide–polymer conjugates. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2014.08.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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22
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Frisch H, Besenius P. pH-switchable self-assembled materials. Macromol Rapid Commun 2014; 36:346-63. [PMID: 25534871 DOI: 10.1002/marc.201400623] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 11/20/2014] [Indexed: 01/21/2023]
Abstract
Self-assembled materials, which are able to respond to external stimuli, have been extensively studied over the last decades. A particularly exciting stimulus for a wide range of biomedical applications is the pH value of aqueous solutions, since deprotonation-protonation events are crucial for structural and functional properties of biopolymers. In living cells and tissues, intra- and extracellular pH values are stringently regulated, but can deviate from pH neutral as observed for example in tumorous, inflammatory sites, in endocytic pathways, and specific cellular compartments. By using a pH-switch as a stimulus, it is thereby possible to address specific targets in order to cause a programmed response of the supramolecular material. This strategy has not only been successfully applied in fundamental research but also in clinical studies. In this feature article, current strategies that have been used in order to design materials with pH-responsive properties are illustrated. This discussion only addresses selected examples from the last four years, the self-assembly of polymer-based building blocks, assemblies emerging from small molecules including surfactants or derived from biological macromolecules, and finally the controlled self-assembly of oligopeptides.
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Affiliation(s)
- Hendrik Frisch
- Organic Chemistry Institute and CeNTech, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, D-48149, Münster, Germany
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23
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Kahveci MU, Ciftci M, Evran S, Timur S, Yagci Y. Photoinducedin situformation of clickable PEG hydrogels and their antibody conjugation. Des Monomers Polym 2014. [DOI: 10.1080/15685551.2014.971392] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Affiliation(s)
- Muhammet U. Kahveci
- Faculty of Science and Letters, Department of Chemistry, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
- Faculty of Chemical and Metallurgical Engineering, Department of Bioengineering, Yildiz Technical University, Davutpasa Campus, Esenler, 34220 Istanbul, Turkey
| | - Mustafa Ciftci
- Faculty of Science and Letters, Department of Chemistry, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
| | - Serap Evran
- Faculty of Science, Department of Biochemistry, Ege University, Bornova, Izmir 35100, Turkey
| | - Suna Timur
- Faculty of Science, Department of Biochemistry, Ege University, Bornova, Izmir 35100, Turkey
| | - Yusuf Yagci
- Faculty of Science and Letters, Department of Chemistry, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
- Faculty of Science, Center of Excellence for Advanced Materials Research (CEAMR), Chemistry Department, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
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24
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Gao H, Li G, Hu Z, Xiao Z, Liang G, Wu Q. Synthesis of amphiphilic polyethylene-b-poly(l-glutamate) block copolymers with vastly different solubilities and their stimuli-responsive polymeric micelles in aqueous solution. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.07.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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25
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Woo SY, Lee H. Molecular dynamics studies of PEGylated α-helical coiled coils and their self-assembled micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:8848-8855. [PMID: 25000284 DOI: 10.1021/la501973w] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We performed coarse-grained (CG) molecular dynamics simulations of trimeric α-helical coiled coils grafted with poly(ethylene glycol) (PEG) of different sizes and conjugate positions and the self-assembled micelle of amphiphilic trimers. The CG model for the trimeric coiled coil is verified by comparing the α-helical structure and interhelical distance with those calculated from all-atom simulations. In CG simulations of PEGylated trimers, the end-to-end distances and radii of gyration of PEGs grafted to the sides of peptides become shorter than those of free PEGs in water, which agrees with experiments. This shorter size of the grafted PEGs is also confirmed by calculating the thickness of the PEG layer, which is less than the size of the mushroom. These indicate the adsorption of PEG chains onto coiled coils since hydrophobic residues in the exterior sites of coiled coils tend to be less exposed to water and thus interact with PEGs, leading to the compact conformation of adsorbed PEGs. Simulations of the self-assembly of amphiphilic trimers show that the randomly distributed trimers self-assemble to micelles. The outer radius and hydrodynamic radius of the micelle, which were calculated respectively from radial densities and diffusion coefficients, are ∼7 nm, in agreement with the experimental value of ∼7.5 nm, while the aggregation number of amphiphilic molecules per micelle is lower than the experimentally proposed value. These simulations predict the experimentally measured size of PEGs grafted to the trimeric coiled coils and their self-assembled amphiphilic micelles and suggest that the aggregation number of the micelle may be lower, which needs to be confirmed by experiments.
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Affiliation(s)
- Sun Young Woo
- Department of Chemical Engineering, Dankook University , Yongin 448-701, South Korea
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26
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Abstract
This article highlights the very recent advances in glycopolypeptide synthesis via NCA polymerization and first studies on stimuli-responsive solution behavior and self-assembling structures. Yet glycopolypeptides are almost exclusively considered as smart biofunctional materials for use in biomedical applications, for instance in targeted drug delivery, but also have high potential for usage as structural materials to fabricate bioinspired hierarchical structures.
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Affiliation(s)
- Kai-Steffen Krannig
- Max Planck Institute of Colloids and Interfaces, Department of Colloid Chemistry, Research Campus Golm, 14424 Potsdam, Germany.
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27
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Tritschler U, Zlotnikov I, Zaslansky P, Fratzl P, Schlaad H, Cölfen H. Hierarchically structured vanadium pentoxide-polymer hybrid materials. ACS NANO 2014; 8:5089-5104. [PMID: 24716494 DOI: 10.1021/nn501153u] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Biomimetic composite materials consisting of vanadium pentoxide (V2O5) and a liquid crystal (LC) "gluing" polymer were manufactured exhibiting six structural levels of hierarchy, formed through LC phases. The organic matrix was a polyoxazoline with pendant cholesteryl and carboxyl units, forming a lyotropic phase with the same structural orientation extending up to hundreds of micrometers upon shearing, and binding to V2O5 via hydrogen bridges. Composites consisting of V2O5-LC polymer hybrid fibers with a pronounced layered structuring were obtained. The V2O5-LC polymer hybrid fibers consist of aligned V2O5 ribbons, composed of self-assembled V2O5 sheets, encasing a chiral nematic polymer matrix. The structures of the V2O5-LC polymer composites strongly depend on the preparation method, i.e., the phase-transfer method from aqueous to organic medium, in which the polymer forms LC phases. Notably, highly defined micro- and nanostructures were obtained when initiating the synthesis using V2O5 tactoids with preoriented nanoparticle building units, even when using isotropic V2O5 dispersions. Shear-induced hierarchical structuring of the composites was observed, as characterized from the millimeter and micrometer down to the nanometer length scales using complementary optical and electron microscopy, SAXS, μCT, and mechanical nanoindentation.
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Affiliation(s)
- Ulrich Tritschler
- Physical Chemistry, University of Konstanz , Universitätsstraße 10, D-78457 Konstanz, Germany
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28
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Molev G, Lu Y, Kim KS, Majdalani IC, Guerin G, Petrov S, Walker G, Manners I, Winnik MA. Organometallic–Polypeptide Diblock Copolymers: Synthesis by Diels–Alder Coupling and Crystallization-Driven Self-Assembly to Uniform Truncated Elliptical Lamellae. Macromolecules 2014. [DOI: 10.1021/ma402441y] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Gregory Molev
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto M5S 3H6, Ontario, Canada
| | - Yijie Lu
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto M5S 3H6, Ontario, Canada
| | - Kris Sanghyun Kim
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto M5S 3H6, Ontario, Canada
| | - Ingrid Chab Majdalani
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto M5S 3H6, Ontario, Canada
| | - Gerald Guerin
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto M5S 3H6, Ontario, Canada
| | - Srebri Petrov
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto M5S 3H6, Ontario, Canada
| | - Gilbert Walker
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto M5S 3H6, Ontario, Canada
| | - Ian Manners
- School
of Chemistry, University of Bristol, Bristol, United Kingdom BS8 1TS
| | - Mitchell A. Winnik
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto M5S 3H6, Ontario, Canada
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29
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Paira TK, Saha A, Banerjee S, Das T, Das P, Jana NR, Mandal TK. Fluorescent amphiphilic PEG-peptide-PEG triblock conjugate micelles for cell imaging. Macromol Biosci 2014; 14:929-35. [PMID: 24687698 DOI: 10.1002/mabi.201400083] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Indexed: 12/18/2022]
Abstract
A fluorescent amphiphilic poly(ethylene glycol)-peptide-fluorophore-peptide-poly(ethylene glycol) (PEG-Pep-F-Pep-PEG) triblock conjugate with a hydrophobic fluorophore moiety at the centre of the chain is synthesized by "grafting to" technique based on Schiff-base coupling chemistry. The conjugate is characterized by nuclear magnetic resonance (NMR), circular dichroism (CD), and fluorescence spectroscopy techniques. The aqueous solution of the triblock conjugate emits blue light and exhibits a fluorescence emission band at 430 nm. The amphiphilic conjugate molecules undergo self-assembly into micelles (D ≈ 15-20 nm) in aqueous solution as confirmed from transmission electron microscopy (TEM) and dynamic light scattering (DLS). The critical aggregation concentration is determined by pyrene fluorescence assay and is found to be 0.051 mg mL(-1) . The highly stable and low toxic fluorescent PEG-Pep-F-Pep-PEG conjugate micelles are used for imaging of HeLa cells.
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Affiliation(s)
- Tapas K Paira
- Polymer Science Unit, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700 032, India
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30
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Averick SE, Dey SK, Grahacharya D, Matyjaszewski K, Das SR. Solid-Phase Incorporation of an ATRP Initiator for Polymer-DNA Biohybrids. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201308686] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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31
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Averick SE, Dey SK, Grahacharya D, Matyjaszewski K, Das SR. Solid-Phase Incorporation of an ATRP Initiator for Polymer-DNA Biohybrids. Angew Chem Int Ed Engl 2014; 53:2739-44. [DOI: 10.1002/anie.201308686] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Revised: 12/04/2013] [Indexed: 01/04/2023]
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32
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Börner HG, Sütterlin RI, Theato P, Wiss KT. Topology-Dependent Swichability of Peptide Secondary Structures in Bioconjugates with Complex Architectures. Macromol Rapid Commun 2013; 35:180-185. [DOI: 10.1002/marc.201300808] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 11/06/2013] [Indexed: 12/27/2022]
Affiliation(s)
- Hans G. Börner
- Humboldt-Universität zu Berlin; Department of Chemistry, Laboratory for Organic Synthesis of Functional Systems; D-12489 Berlin Germany
| | - Romina I. Sütterlin
- Humboldt-Universität zu Berlin; Department of Chemistry, Laboratory for Organic Synthesis of Functional Systems; D-12489 Berlin Germany
| | - Patrick Theato
- University of Mainz; Institute of Organic Chemistry; Duesbergweg 10-14 D-55099 Mainz Germany
- University of Hamburg; Institute for Technical and Macromolecular Chemistry, Bundesstr 45; D-20146 Hamburg Germany
| | - Kerstin T. Wiss
- University of Mainz; Institute of Organic Chemistry; Duesbergweg 10-14 D-55099 Mainz Germany
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33
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Hamed E, Xu T, Keten S. Poly(ethylene glycol) Conjugation Stabilizes the Secondary Structure of α-Helices by Reducing Peptide Solvent Accessible Surface Area. Biomacromolecules 2013; 14:4053-60. [DOI: 10.1021/bm401164t] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Elham Hamed
- Department of Civil
and Environmental Engineering and Department of Mechanical Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Ting Xu
- Department of Materials
Science and Engineering, University of California, Berkeley, California 94720, United States
| | - Sinan Keten
- Department of Civil
and Environmental Engineering and Department of Mechanical Engineering, Northwestern University, Evanston, Illinois 60208, United States
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34
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Tritschler U, Zlotnikov I, Zaslansky P, Aichmayer B, Fratzl P, Schlaad H, Cölfen H. Hierarchical structuring of liquid crystal polymer-Laponite hybrid materials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:11093-11101. [PMID: 23790152 DOI: 10.1021/la4007845] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Biomimetic organic-inorganic composite materials were fabricated via one-step self-organization on three hierarchical levels. The organic component was a polyoxazoline with pendent cholesteryl and carboxyl (N-Boc-protected amino acid) side chains that was able to form a chiral nematic lyotropic phase and bind to positively charged inorganic faces of Laponite. The Laponite particles formed a mesocrystalline arrangement within the liquid-crystal (LC) polymer phase upon shearing a viscous dispersion of Laponite nanoparticles and LC polymer in DMF. Complementary analytical and mechanical characterization techniques (AUC, POM, TEM, SEM, SAXS, μCT, and nanoindentation) covering the millimeter, micrometer, and nanometer length scales reveal the hierarchical structures and properties of the composite materials consisting of different ratios of Laponite nanoparticles and liquid-crystalline polymer.
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Affiliation(s)
- Ulrich Tritschler
- Physical Chemistry, University of Konstanz, Universitätsstrasse 10, D-78457 Konstanz, Germany
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35
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Frisch H, Unsleber JP, Lüdeker D, Peterlechner M, Brunklaus G, Waller M, Besenius P. pH-Schaltbare amphotere supramolekulare Copolymere. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303810] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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36
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Frisch H, Unsleber JP, Lüdeker D, Peterlechner M, Brunklaus G, Waller M, Besenius P. pH-Switchable ampholytic supramolecular copolymers. Angew Chem Int Ed Engl 2013; 52:10097-101. [PMID: 23929814 DOI: 10.1002/anie.201303810] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Indexed: 12/16/2022]
Abstract
β-sheet-encoded anionic and cationic dendritic peptide amphiphiles form supramolecular copolymers when self-assembled in a 1:1 feed ratio of the monomers. These ampholytic materials have been designed for on-off polymerization in response to pH triggers. The cooperative supramolecular self-assembly process is switched on at a physiologically relevant pH value and can be switched off by increasing or decreasing the pH value.
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Affiliation(s)
- Hendrik Frisch
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Münster (Germany) http://www.besenius-group.com; CeNTech, Münster (Germany)
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37
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Bonduelle C, Lecommandoux S. Synthetic Glycopolypeptides as Biomimetic Analogues of Natural Glycoproteins. Biomacromolecules 2013; 14:2973-83. [DOI: 10.1021/bm4008088] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Colin Bonduelle
- Université de Bordeaux/IPB, ENSCBP, 16 avenue Pey Berland, 33607
Pessac Cedex, France
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38
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Synthesis and thermoreversible gelation of coil-helical polyethylene-block-poly(γ-benzyl-l-glutamate) diblock copolymer. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.06.055] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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39
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Wang M, Timachova K, Olsen BD. Diffusion Mechanisms of Entangled Rod–Coil Diblock Copolymers. Macromolecules 2013. [DOI: 10.1021/ma400653g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Muzhou Wang
- Department
of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139,
United States
| | - Ksenia Timachova
- Department
of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139,
United States
| | - Bradley D. Olsen
- Department
of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139,
United States
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40
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Sun J, Zuckermann RN. Peptoid polymers: a highly designable bioinspired material. ACS NANO 2013; 7:4715-32. [PMID: 23721608 DOI: 10.1021/nn4015714] [Citation(s) in RCA: 307] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Bioinspired polymeric materials are attracting increasing attention due to significant advantages over their natural counterparts: the ability to precisely tune their structures over a broad range of chemical and physical properties, increased stability, and improved processability. Polypeptoids, a promising class of bioinspired polymer based on a N-substituted glycine backbone, have a number of unique properties that bridge the material gap between proteins and bulk polymers. Peptoids combine the sequence specificity of biopolymers with the simpler intra/intermolecular interactions and robustness of traditional synthetic polymers. They are highly designable because hundreds of chemically diverse side chains can be introduced from simple building blocks. Peptoid polymers can be prepared by two distinct synthetic techniques offering access to two material subclasses: (1) automated solid-phase synthesis which enables precision sequence control and near absolute monodispersity up to chain lengths of ~50 monomers, and (2) a classical polymerization approach which allows access to higher molecular weights and larger-scale yields, but with less control over length and sequence. This combination of facile synthetic approaches makes polypeptoids a highly tunable, rapid polymer prototyping platform to investigate new materials that are intermediate between proteins and bulk polymers, in both their structure and their properties. In this paper, we review the methods to synthesize peptoid polymers and their applications in biomedicine and nanoscience, as both sequence-specific materials and as bulk polymers.
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Affiliation(s)
- Jing Sun
- Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA
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41
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Shu JY, Panganiban B, Xu T. Peptide-Polymer Conjugates: From Fundamental Science to Application. Annu Rev Phys Chem 2013; 64:631-57. [DOI: 10.1146/annurev-physchem-040412-110108] [Citation(s) in RCA: 179] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | - Ting Xu
- Department of Materials Science and Engineering and
- Department of Chemistry, University of California, Berkeley, California 94720-1760;
- Material Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
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42
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Lund R, Shu J, Xu T. A Small-Angle X-ray Scattering Study of α-helical Bundle-Forming Peptide–Polymer Conjugates in Solution: Chain Conformations. Macromolecules 2013. [DOI: 10.1021/ma301310h] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Reidar Lund
- Department of Material Sciences & Engineering, University of California, 225 Hearst Memorial Mining Building, Berkeley, California 94720-1760, United States
- Material Science Division, Lawrence Berkeley
National Lab (LBNL), Berkeley, California 94720, United States
| | - Jessica Shu
- Department of Material Sciences & Engineering, University of California, 225 Hearst Memorial Mining Building, Berkeley, California 94720-1760, United States
| | - Ting Xu
- Department of Material Sciences & Engineering, University of California, 225 Hearst Memorial Mining Building, Berkeley, California 94720-1760, United States
- Material Science Division, Lawrence Berkeley
National Lab (LBNL), Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720-1760,
United States
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43
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Cranford SW, de Boer J, van Blitterswijk C, Buehler MJ. Materiomics: an -omics approach to biomaterials research. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:802-24. [PMID: 23297023 DOI: 10.1002/adma.201202553] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2012] [Revised: 10/13/2012] [Indexed: 05/20/2023]
Abstract
The past fifty years have seen a surge in the use of materials for clinical application, but in order to understand and exploit their full potential, the scientific complexity at both sides of the interface--the material on the one hand and the living organism on the other hand--needs to be considered. Technologies such as combinatorial chemistry, recombinant DNA as well as computational multi-scale methods can generate libraries with a very large number of material properties whereas on the other side, the body will respond to them depending on the biological context. Typically, biological systems are investigated using both holistic and reductionist approaches such as whole genome expression profiling, systems biology and high throughput genetic or compound screening, as already seen, for example, in pharmacology and genetics. The field of biomaterials research is only beginning to develop and adopt these approaches, an effort which we refer to as "materiomics". In this review, we describe the current status of the field, and its past and future impact on the biomedical sciences. We outline how materiomics sets the stage for a transformative change in the approach to biomaterials research to enable the design of tailored and functional materials for a variety of properties in fields as diverse as tissue engineering, disease diagnosis and de novo materials design, by combining powerful computational modelling and screening with advanced experimental techniques.
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Affiliation(s)
- Steven W Cranford
- Laboratory for Atomistic and Molecular Mechanics, Department of Civil and Environmental Engineering, Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
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44
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Hybrid Block Copolymers Constituted by Peptides and Synthetic Polymers: An Overview of Synthetic Approaches, Supramolecular Behavior and Potential Applications. Polymers (Basel) 2013. [DOI: 10.3390/polym5010188] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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45
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Grieshaber SE, Paik BA, Bai S, Kiick KL, Jia X. Nanoparticle Formation from Hybrid, Multiblock Copolymers of Poly(Acrylic Acid) and VPGVG Peptide. SOFT MATTER 2013; 9:1589-1599. [PMID: 23976897 PMCID: PMC3749889 DOI: 10.1039/c2sm27496e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Elastin-mimetic hybrid copolymers with an alternating molecular architecture were synthesized via the step growth polymerization of azide-functionalized, telechelic poly(tert-butyl acrylate) (PtBA) and an alkyne-terminated, valine and glycine-rich peptide with a sequence of (VPGVG)2 (VG2). The resultant hybrid copolymer, [PtBA-VG2]n, contains up to six constituent building blocks and has a polydispersity index (PDI) of ~1.9. Trifluoroacetic acid (TFA) treatment of [PtBA-VG2]n gave rise to an alternating copolymer of poly(acrylic acid) (PAA) and VG2 ([PAA-VG2]n). The modular design permits facile adjustment of the copolymer composition by varying the molecular weight of PAA (22 and 63 repeat units). Characterization by dynamic light scattering indicated that the multiblock copolymers formed discrete nanoparticles at room temperature in aqueous solution at pH 3.8, with an average diameter of 250-270 nm and a particle size distribution of 0.34 for multiblock copolymers containing PAA22 and 0.17 for those containing PAA63. Upon increasing the pH to 7.4, both types of particles were able to swell without being disintegrated, reaching an average diameter of 285-300 nm for [PAA22-VG2]n and 330-350 nm for [PAA63-VG2]n, respectively. The nanoparticles were not dissociated upon the addition of urea, further confirming their unusual stability. The nanoparticles were capable of sequestering a hydrophobic fluorescent dye (pyrene), and the critical aggregation concentration (CAC) was determined to be 1.09 × 10-2 or 1.05 × 10-2 mg/mL for [PAA22-VG2]n and [PAA63-VG2]n, respectively. We suggest that the multiblock copolymers form through collective H-bonding and hydrophobic interactions between the PAA and VG2 peptide units, and that the unusual stability of the multiblock nanoparticles is conferred by the multiblock architecture. These hybrid multiblock copolymers are potentially useful as pH-responsive drug delivery vehicles, with the possibility of drug loading through concerted H-bonds and hydrophobic interactions.
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Affiliation(s)
- Sarah E. Grieshaber
- Department of Materials Science and Engineering, Delaware Biotechnology Institute, University of Delaware, Newark, DE 19716, USA
| | - Bradford A. Paik
- Department of Materials Science and Engineering, Delaware Biotechnology Institute, University of Delaware, Newark, DE 19716, USA
| | - Shi Bai
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
| | - Kristi L. Kiick
- Department of Materials Science and Engineering, Delaware Biotechnology Institute, University of Delaware, Newark, DE 19716, USA
- Biomedical Engineering Program, University of Delaware, Newark, DE, 19716, USA
| | - Xinqiao Jia
- Department of Materials Science and Engineering, Delaware Biotechnology Institute, University of Delaware, Newark, DE 19716, USA
- Biomedical Engineering Program, University of Delaware, Newark, DE, 19716, USA
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Kuan SL, Stöckle B, Reichenwallner J, Ng DYW, Wu Y, Doroshenko M, Koynov K, Hinderberger D, Müllen K, Weil T. Dendronized albumin core-shell transporters with high drug loading capacity. Biomacromolecules 2013; 14:367-76. [PMID: 23210662 DOI: 10.1021/bm301531c] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
We describe the synthesis of a core-shell biohybrid consisting of a human serum albumin (HSA) core that serves as a reservoir for lipophilic molecules and a cationized shell region consisting of ethynyl-G2.0-PAMAM or ethynyl-G3.0-PAMAM dendrons. The binding capacity of lipophilic guests was quantified applying electron paramagnetic resonance (EPR) spectroscopy, and five to six out of seven pockets were still available compared with HSA. The attachment of ethynyl-G2.0-PAMAM dendrons to HSA yielded a nontoxic core-shell macromolecule that was clearly uptaken by A549 human epithelial cells due to the presence of the dendritic PAMAM shell. Significantly higher loading of doxorubicin was observed for dendronized G2-DHSA compared with the native protein due to the availability of binding pockets of the HSA core, and interaction with the dendritic shell. Dendronized G2-DHSA-doxorubicin displayed significant cytotoxicity resulting from high drug loading and high stability under different conditions, thus demonstrating its great potential as a transporter for drug molecules.
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Affiliation(s)
- Seah Ling Kuan
- Institute of Organic Chemistry III, University of Ulm, Albert-Einstein-Allee 11, Ulm, Germany
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Bonduelle C, Mazzaferro S, Huang J, Lambert O, Heise A, Lecommandoux S. Synthesis and self-assembly of branched glycopolypeptides: effect of topology and conformation. Faraday Discuss 2013; 166:137-50. [DOI: 10.1039/c3fd00082f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Lv A, Deng XX, Li L, Li ZL, Wang YZ, Du FS, Li ZC. Facile synthesis of multi-block copolymers containing poly(ester–amide) segments with an ordered side group sequence. Polym Chem 2013. [DOI: 10.1039/c3py00382e] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Haspel N, Laurent AD, Zanuy D, Nussinov R, Alemán C, Puiggalí J, Revilla-López G. Conformational exploration of two peptides and their hybrid polymer conjugates: potentialities as self-aggregating materials. J Phys Chem B 2012; 116:13941-52. [PMID: 23157485 PMCID: PMC7512015 DOI: 10.1021/jp3043363] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
In this work we elucidate the conformational preferences of two amyloid-forming peptides, Arginine-Vasopressin and Neuromedin-K, and two new biomacromolecular conjugates obtained by linking the two peptides to a polyester (poly(R-lactic acid)) chain. The conformational properties of the new hybrid conjugates have been assessed through molecular dynamics simulations and compared to those of their individual components. Our results suggest that the free unconjugated peptides tend to adopt backbone arrangements which resemble a β-hairpin shape, a conformation which has been reported to facilitate amyloid self-aggregation. The backbone conformational preferences of the unlinked peptides are maintained in the peptide-polymer hybrid. Yet significant differences in the side-chains nonbonding interactions patterns were detected between the two states. This suggests that the conformational profile of the peptides' backbones is preserved when linked to the polymer, maintaining the amyloid precursor-like structure. Additionally, several hydrodynamic parameters were computed for both the polylactic acid and for the conjugates: no significant differences were observed, which suggests that the peptide moiety of the hybrid does not significantly affect the conformational tendencies of the polymer chain. Combined, our results provide a conformational exploration of two amyloid-forming peptides and first steps toward the design of two feasible self-aggregating hybrid materials.
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Affiliation(s)
- Nurit Haspel
- UMass Boston, Department of Compuer Science, Boston, MA 02125 USA
| | - Adèle D. Laurent
- Departament d’Enginyeria Química, E. T. S. d’Enginyeria Industrial de Barcelona, Universitat Politecnica de Catalunya, Diagonal 647, Barcelona E-08028, Spain
| | - David Zanuy
- Departament d’Enginyeria Química, E. T. S. d’Enginyeria Industrial de Barcelona, Universitat Politecnica de Catalunya, Diagonal 647, Barcelona E-08028, Spain
| | - Ruth Nussinov
- Basic Research Program, SAIC-Frederick, Center for Cancer Research Nanobiology Program, NCI-Frederick, Frederick, Maryland 21702
- Department of Human Genetics and Molecular Medicine, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Carlos Alemán
- Departament d’Enginyeria Química, E. T. S. d’Enginyeria Industrial de Barcelona, Universitat Politecnica de Catalunya, Diagonal 647, Barcelona E-08028, Spain
- Center for Research in Nano-Engineering, Universitat Politècnica de Catalunya, Campus Sud, Edifici C’, C/Pasqual i Vila s/n, Barcelona E-08028, Spain
| | - Jordi Puiggalí
- Departament d’Enginyeria Química, E. T. S. d’Enginyeria Industrial de Barcelona, Universitat Politecnica de Catalunya, Diagonal 647, Barcelona E-08028, Spain
| | - Guillem Revilla-López
- Departament d’Enginyeria Química, E. T. S. d’Enginyeria Industrial de Barcelona, Universitat Politecnica de Catalunya, Diagonal 647, Barcelona E-08028, Spain
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Mayap Talom R, Fuks G, Mingotaud C, Gineste S, Gauffre F. Investigation of the reversibility of the unimer-to-aggregate transition in block copolymers by surface tension-measurements. J Colloid Interface Sci 2012; 387:180-6. [PMID: 22939528 DOI: 10.1016/j.jcis.2012.07.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Revised: 07/04/2012] [Accepted: 07/05/2012] [Indexed: 10/28/2022]
Abstract
Two DNA-block copolymers, poly(caprolactone)-DNA and poly(methyl metacrylate)-DNA, were synthesized by conjugation of a short single strand of DNA (12 or 22mer) to a single reactive group at one end of the synthetic polymer. These polymers self-assemble in water, without the need of any cosolvent, forming micelle-like aggregates that were imaged by TEM. The solution behavior of the bioconjugated polymers was investigated by surface tension measurements. In the direction of dilution, the surface tension was measured using a down-scaled Wilhelmy plate method. To proceed in the reverse direction (concentration), we measured the surface tension of a sessile drop during its evaporation. This latter method was firstly validated using ionic and non-ionic surfactants, including polymeric surfactants. It was then applied to investigate the unimer to micelles transition of the DNA-block copolymers. In all cases, a reversible transition was observed demonstrating the existence of a critical micellar concentration, close to 0.01 mmol L(-1) for all the conjugates. The CMC was only slightly influenced by the length of the hydrophilic DNA block.
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Affiliation(s)
- Renée Mayap Talom
- Université de Toulouse, Laboratoire des IMRCP, UMR5623 CNRS, 118 Route de Narbonne, F-31062 Toulouse Cedex 9, France
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