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Trinh TKH, Cabezas AJ, Joshi S, Catalano C, Siddique AB, Qiu W, Deshmukh S, des Georges A, Guo Y. pH-tunable membrane-active polymers, NCMNP2a- x, and their potential membrane protein applications. Chem Sci 2023; 14:7310-7326. [PMID: 37416719 PMCID: PMC10321531 DOI: 10.1039/d3sc01890c] [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: 04/11/2023] [Accepted: 05/30/2023] [Indexed: 07/08/2023] Open
Abstract
Accurate 3D structures of membrane proteins are essential for comprehending their mechanisms of action and designing specific ligands to modulate their activities. However, these structures are still uncommon due to the involvement of detergents in the sample preparation. Recently, membrane-active polymers have emerged as an alternative to detergents, but their incompatibility with low pH and divalent cations has hindered their efficacy. Herein, we describe the design, synthesis, characterization, and application of a new class of pH-tunable membrane-active polymers, NCMNP2a-x. The results demonstrated that NCMNP2a-x could be used for high-resolution single-particle cryo-EM structural analysis of AcrB in various pH conditions and can effectively solubilize BcTSPO with the function preserved. Molecular dynamic simulation is consistent with experimental data that shed great insights into the working mechanism of this class of polymers. These results demonstrated that NCMNP2a-x might have broad applications in membrane protein research.
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Affiliation(s)
- Thi Kim Hoang Trinh
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University Richmond VA 23298 USA
- Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy, Virginia Commonwealth University Richmond VA 23219 USA
| | - Andres Jorge Cabezas
- Structural Biology Initiative, CUNY Advanced Science Research Center, City University of New York New York New York 10017 USA
- PhD Program in Biochemistry, The Graduate Center of the City University of New York New York New York 10017 USA
| | - Soumil Joshi
- Department of Chemical Engineering, Virginia Tech Blacksburg VA2 4060 USA
| | - Claudio Catalano
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University Richmond VA 23298 USA
- Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy, Virginia Commonwealth University Richmond VA 23219 USA
| | - Abu Bakkar Siddique
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University Richmond VA 23298 USA
- Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy, Virginia Commonwealth University Richmond VA 23219 USA
| | - Weihua Qiu
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University Richmond VA 23298 USA
- Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy, Virginia Commonwealth University Richmond VA 23219 USA
| | - Sanket Deshmukh
- Department of Chemical Engineering, Virginia Tech Blacksburg VA2 4060 USA
| | - Amedee des Georges
- Structural Biology Initiative, CUNY Advanced Science Research Center, City University of New York New York New York 10017 USA
- PhD Program in Biochemistry, The Graduate Center of the City University of New York New York New York 10017 USA
- Department of Chemistry & Biochemistry, City College of New York New York New York 10017 USA
| | - Youzhong Guo
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University Richmond VA 23298 USA
- Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy, Virginia Commonwealth University Richmond VA 23219 USA
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Chen H, Zhang Y, Zhang Y, Liu D, Li M, Cao Y. Surface encapsulating UV filters based on self-assembly of an amphiphilic random copolymer by miniemulsion polymerization. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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Kräuter M, Tazreiter M, Perrotta A, Coclite AM. Deposition of Ion-Conductive Membranes from Ionic Liquids via Initiated Chemical Vapor Deposition. Macromolecules 2020; 53:7962-7969. [PMID: 32981970 PMCID: PMC7513469 DOI: 10.1021/acs.macromol.0c01258] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 08/21/2020] [Indexed: 11/30/2022]
Abstract
In this study, liquid droplets of 1-allyl-3-methylimidazolium dicyanamide have been processed by initiated chemical vapor deposition (iCVD) with a cross-linked polymer film consisting of (hydroxyethyl)methacrylate and ethylene glycol dimethacrylate to develop free-standing, ion-conductive membranes. We found that the obtained films are solids and have a conductivity of up to 18 ± 6 mS/cm, associated with the negatively charged counterion, indicating no loss of conductivity, compared to the ionic liquid in the liquid state. The membranes were conductive within a large process window and in air, thanks to the fact that the iCVD process does not affect the mobility of the anion in the ionic liquid. Furthermore, we demonstrate that varying the deposition conditions can influence the homogeneity and conductivity of the resulting membranes. The promising results of this study represent an important stepping stone on the way to novel ion-conductive membranes.
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Affiliation(s)
- Marianne Kräuter
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
| | - Martin Tazreiter
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
| | - Alberto Perrotta
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
| | - Anna Maria Coclite
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
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Decandia G, Palumbo F, Treglia A, Armenise V, Favia P, Baruzzi F, Unger K, Perrotta A, Coclite AM. Initiated Chemical Vapor Deposition of Crosslinked Organic Coatings for Controlling Gentamicin Delivery. Pharmaceutics 2020; 12:E213. [PMID: 32121608 PMCID: PMC7150873 DOI: 10.3390/pharmaceutics12030213] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 02/22/2020] [Accepted: 02/25/2020] [Indexed: 01/14/2023] Open
Abstract
A coating consisting of a copolymer of methacrylic acid and ethylene glycol dimethacrylate was deposited over a gentamicin film by initiated chemical vapor deposition with the aim of controlling the drug release. Gentamicin release in water was monitored by means of conductance measurements and of UV-vis Fluorescence Spectroscopy. The influence of the polymer chemical composition, specifically of its crosslinking density, has been investigated as a tool to control the swelling behavior of the initiated chemical vapor deposition (iCVD) coating in water, and therefore its ability to release the drug. Agar diffusion test and microbroth dilution assays against Staphylococcus aureus and Pseudomonas aeruginosa on cellulose coated substrates confirmed that the antibacterial activity of the drug released by the coating was retained, though the release of gentamicin was not complete.
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Affiliation(s)
- Gianfranco Decandia
- Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy; (G.D.); (A.T.); (V.A.); (P.F.)
| | - Fabio Palumbo
- Institute of Nanotechnology, National Research Council of Italy, c/o Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy
| | - Annalisa Treglia
- Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy; (G.D.); (A.T.); (V.A.); (P.F.)
| | - Vincenza Armenise
- Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy; (G.D.); (A.T.); (V.A.); (P.F.)
| | - Pietro Favia
- Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy; (G.D.); (A.T.); (V.A.); (P.F.)
- Institute of Nanotechnology, National Research Council of Italy, c/o Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy
| | - Federico Baruzzi
- Institute of Sciences of Food Production, National Research Council of Italy, Via G. Amendola 122/O, 70126 Bari, Italy;
| | - Katrin Unger
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria; (K.U.); (A.P.); (A.M.C.)
| | - Alberto Perrotta
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria; (K.U.); (A.P.); (A.M.C.)
| | - Anna Maria Coclite
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria; (K.U.); (A.P.); (A.M.C.)
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Perrotta A, Christian P, Jones AOF, Muralter F, Coclite AM. Growth Regimes of Poly(perfluorodecyl acrylate) Thin Films by Initiated Chemical Vapor Deposition. Macromolecules 2018; 51:5694-5703. [PMID: 30135610 PMCID: PMC6096450 DOI: 10.1021/acs.macromol.8b00904] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 06/11/2018] [Indexed: 11/28/2022]
Abstract
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Control over thin film growth (e.g.,
crystallographic orientation
and morphology) is of high technological interest as it affects several
physicochemical material properties, such as chemical affinity, mechanical
stability, and surface morphology. The effect of process parameters
on the molecular organization of perfluorinated polymers deposited
via initiated chemical vapor deposition (iCVD) has been previously
reported. We showed that the tendency of poly(1H,1H,2H,2H-perfluorodecyl
acrylate) (pPFDA) to organize in an ordered lamellar structure is
a function of the filament and substrate temperatures adopted during
the iCVD process. In this contribution, a more thorough investigation
of the effect of such parameters is presented, using synchrotron radiation
grazing incidence and specular X-ray diffraction (GIXD and XRD) and
atomic force microscopy (AFM). The parameters influencing the amorphization,
mosaicity, and preferential orientation are addressed. Different growth
regimes were witnessed, characterized by a different surface structuring
and by the presence of particular crystallographic textures. The combination
of morphological and crystallographic analyses allowed the identification
of pPFDA growth possibilities between island or columnar growth.
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Affiliation(s)
- Alberto Perrotta
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
| | - Paul Christian
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
| | - Andrew O F Jones
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
| | - Fabian Muralter
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
| | - Anna Maria Coclite
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
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