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Jahan S, Doyle C, Ghimire A, Combita D, Rainey JK, Wagner BD, Ahmed M. Elucidating the Role of Optical Activity of Polymers in Protein-Polymer Interactions. Polymers (Basel) 2023; 16:65. [PMID: 38201730 PMCID: PMC10781056 DOI: 10.3390/polym16010065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 12/22/2023] [Accepted: 12/22/2023] [Indexed: 01/12/2024] Open
Abstract
Proteins are biomolecules with potential applications in agriculture, food sciences, pharmaceutics, biotechnology, and drug delivery. Interactions of hydrophilic and biocompatible polymers with proteins may impart proteolytic stability, improving the therapeutic effects of biomolecules and also acting as excipients for the prolonged storage of proteins under harsh conditions. The interactions of hydrophilic and stealth polymers such as poly(ethylene glycol), poly(trehalose), and zwitterionic polymers with various proteins are well studied. This study evaluates the molecular interactions of hydrophilic and optically active poly(vitamin B5 analogous methacrylamide) (poly(B5AMA)) with model proteins by fluorescence spectroscopy, nuclear magnetic resonance (NMR) spectroscopy, and circular dichroism (CD) spectroscopy analysis. The optically active hydrophilic polymers prepared using chiral monomers of R-(+)- and S-(-)-B5AMA by the photo-iniferter reversible addition fragmentation chain transfer (RAFT) polymerization showed concentration-dependent weak interactions of the polymers with bovine serum albumin and lysozyme proteins. Poly(B5AMA) also exhibited a concentration-dependent protein stabilizing effect at elevated temperatures, and no effect of the stereoisomers of polymers on protein thermal stability was observed. NMR analysis, however, showed poly(B5AMA) stereoisomer-dependent changes in the secondary structure of proteins.
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Affiliation(s)
- Samin Jahan
- Department of Chemistry, University of Prince Edward Island, Charlottetown, PE C1A 4P3, Canada; (S.J.); (C.D.); (D.C.); (B.D.W.)
| | - Catherine Doyle
- Department of Chemistry, University of Prince Edward Island, Charlottetown, PE C1A 4P3, Canada; (S.J.); (C.D.); (D.C.); (B.D.W.)
| | - Anupama Ghimire
- Department of Biochemistry & Molecular Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada; (A.G.); (J.K.R.)
| | - Diego Combita
- Department of Chemistry, University of Prince Edward Island, Charlottetown, PE C1A 4P3, Canada; (S.J.); (C.D.); (D.C.); (B.D.W.)
| | - Jan K. Rainey
- Department of Biochemistry & Molecular Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada; (A.G.); (J.K.R.)
- Department of Chemistry, Dalhousie University, Halifax, NS B3H 4R2, Canada
- School of Biomedical Engineering, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Brian D. Wagner
- Department of Chemistry, University of Prince Edward Island, Charlottetown, PE C1A 4P3, Canada; (S.J.); (C.D.); (D.C.); (B.D.W.)
| | - Marya Ahmed
- Department of Chemistry, University of Prince Edward Island, Charlottetown, PE C1A 4P3, Canada; (S.J.); (C.D.); (D.C.); (B.D.W.)
- Faculty of Sustainable Design Engineering, University of Prince Edward Island, Charlottetown, PE C1A 4P3, Canada
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2
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Progress of albumin-polymer conjugates as efficient drug carriers. PURE APPL CHEM 2022. [DOI: 10.1515/pac-2021-2006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Albumin is a protein that has garnered wide attention in nanoparticle-based drug delivery of cancer therapeutics due to its natural abundance and unique cancer-targeting ability. The propensity of albumin to naturally accumulate in tumours, further augmented by the incorporation of targeting ligands, has made the field of albumin-polymer conjugate development a much pursued one. Polymerization techniques such as RAFT and ATRP have paved the path to incorporate various polymers in the design of albumin-polymer hybrids, indicating the advancement of the field since the first instance of PEGylated albumin in 1977. The synergistic combination of albumin and polymer endows manifold features to these macromolecular hybrids to evolve as next generation therapeutics. The current review is successive to our previously published review on drug delivery vehicles based on albumin-polymer conjugates and aims to provide an update on the progress of albumin-polymer conjugates. This review also highlights the alternative of exploring albumin-polymer conjugates formed via supramolecular, non-covalent interactions. Albumin-based supramolecular polymer systems provide a versatile platform for functionalization, thereby, holding great potential in enhancing cytotoxicity and controlled delivery of therapeutic agents.
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Vlassi E, Papagiannopoulos A, Pispas S. Self-assembly of poly(ethylene glycol-b-phenyl oxazoline) diblock copolymers in aqueous media and their interactions with proteins. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4076-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Chin J, Mustafi D, Poellmann MJ, Lee RC. Amphiphilic copolymers reduce aggregation of unfolded lysozyme more effectively than polyethylene glycol. Phys Biol 2017; 14:016003. [PMID: 28061483 DOI: 10.1088/1478-3975/aa5788] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Certain amphiphilic block copolymers are known to prevent aggregation of unfolded proteins. To better understand the mechanism of this effect, the optical properties of heat-denatured and dithiothreitol reduced lysozyme were evaluated with respect to controls using UV-Vis spectroscopy, transmission electron microscopy (TEM) and circular dichroism (CD) measurements. Then, the effects of adding Polyethylene Glycol (8000 Da), the triblock surfactant Poloxamer 188 (P188), and the tetrablock copolymer Tetronic 1107 (T1107) to the lysozyme solution were compared. Overall, T1107 was found to be more effective than P188 in inhibiting aggregation, while PEG exhibited no efficacy. TEM imaging of heat-denatured and reduced lysozymes revealed spherical aggregates with on average 250-450 nm diameter. Using CD, more soluble lysozyme was recovered with T1107 than P188 with β-sheet secondary structure. The greater effectiveness of the larger T1107 in preventing aggregation of unfolded lysozyme than the smaller P188 and PEG points to steric hindrance at play; signifying the importance of size match between the hydrophobic region of denatured protein and that of amphiphilic copolymers. Thus, our results corroborate that certain multi-block copolymers are effective in preventing heat-induced aggregation of reduced lysozymes and future studies warrant more detailed focus on specific applications of these copolymers.
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Affiliation(s)
- Jaemin Chin
- Departments of Surgery, The University of Chicago, Chicago, IL 60637, United States of America
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De Santis S, Chiaraluce R, Consalvi V, Novelli F, Petrosino M, Punzi P, Sciubba F, Giordano C, Masci G, Scipioni A. PEGylated β-Sheet Breaker Peptides as Inhibitors of β-Amyloid Fibrillization. Chempluschem 2017; 82:241-250. [PMID: 31961555 DOI: 10.1002/cplu.201600550] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Indexed: 11/06/2022]
Abstract
Three PEGylated β-sheet breaker peptides are designed as new inhibitors of β-amyloid fibrillization. The peptide Ac-Leu-Pro-Phe-Phe-Asp-NH2 , considered the lead compound, and hexamers in which taurine and β-alanine substitute the acetyl group, are conjugated to poly(ethylene glycol); this conjugates self-assemble into nanoparticles. The activity of the PEGylated peptides as inhibitors of amyloid fibrillization are tested in vitro using circular dichroism spectroscopy and scanning electron microscopy. The experimental results indicate that PEGylation does not impair the ability of the β-sheet breaker peptides to inhibit fibrillogenesis in vitro. Moreover, microscopy images of β-amyloid incubated for 6 days with the taurine-containing peptide, suggest that this conjugate has major anti-fibrillogenesis activity and demonstrate the important role of the sulfonamide function against the amyloid aggregation.
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Affiliation(s)
- Serena De Santis
- Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro, 5, 00185, Rome, Italy
| | - Roberta Chiaraluce
- Dipartimento di Scienze Biochimiche, Sapienza Università di Roma, P.le A. Moro, 5, 00185, Rome, Italy
| | - Valerio Consalvi
- Dipartimento di Scienze Biochimiche, Sapienza Università di Roma, P.le A. Moro, 5, 00185, Rome, Italy
| | - Federica Novelli
- Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro, 5, 00185, Rome, Italy
| | - Maria Petrosino
- Dipartimento di Scienze Biochimiche, Sapienza Università di Roma, P.le A. Moro, 5, 00185, Rome, Italy
| | - Pasqualina Punzi
- Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro, 5, 00185, Rome, Italy
| | - Fabio Sciubba
- Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro, 5, 00185, Rome, Italy
| | - Cesare Giordano
- Istituto di Biologia e Patologia Molecolari, CNR, Dipartimento di Chimica Sapienza Università di Roma, P.le A. Moro, 5, 00185, Rome, Italy
| | - Giancarlo Masci
- Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro, 5, 00185, Rome, Italy
| | - Anita Scipioni
- Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro, 5, 00185, Rome, Italy
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Aguilar-Castillo BA, Santos JL, Luo H, Aguirre-Chagala YE, Palacios-Hernández T, Herrera-Alonso M. Nanoparticle stability in biologically relevant media: influence of polymer architecture. SOFT MATTER 2015; 11:7296-7307. [PMID: 26274373 DOI: 10.1039/c5sm01455g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We have contrasted the behavior of nanoparticles formed by the self-assembly of polymers based on poly(ethylene glycol) (PEG) and poly(D,L-lactide), with linear, linear-dendritic and bottle-brush architectures in biologically relevant media. Polymer PEG content ranged between 14% and 46% w/w, and self-assembly was triggered by a rapid and large change in solvent quality inside a four-stream vortex mixer. We examined nanoparticle interaction with human serum albumin (HSA), and solute release in the presence of fetal bovine serum. Dynamic light scattering data showed that PEG surface brushes of all nanoparticles provided effective steric stabilization, thus limiting their interaction with human serum albumin. Calorimetric experiments revealed that nanoparticle-HSA interaction was relatively weak and enthalpically driven, whereas dynamic light scattering results of incubated nanoparticles showed the absence of larger aggregates for most of the polymers examined. Solute core partitioning was examined by the loss of Forster resonance energy transfer (FRET) from a core-loaded donor-acceptor pair. The rate and magnitude of FRET efficiency loss was strongly dependent on the polymer architecture, and was found to be lowest for the bottle-brush, attributed to its covalent nature. Collectively, these findings are expected to impact the molecular design of increasingly stable polymeric carriers for drug delivery applications.
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8
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Hemmelmann M, Mohr K, Fischer K, Zentel R, Schmidt M. Interaction of pHPMA–pLMA Copolymers with Human Blood Serum and Its Components. Mol Pharm 2013; 10:3769-75. [DOI: 10.1021/mp400254b] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Mirjam Hemmelmann
- Institute of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55099 Mainz, Germany
| | - Kristin Mohr
- Institute for Physical Chemistry, University of Mainz, Welder Weg
11, D-55099 Mainz, Germany
| | - Karl Fischer
- Institute for Physical Chemistry, University of Mainz, Welder Weg
11, D-55099 Mainz, Germany
| | - Rudolf Zentel
- Institute of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55099 Mainz, Germany
| | - Manfred Schmidt
- Institute for Physical Chemistry, University of Mainz, Welder Weg
11, D-55099 Mainz, Germany
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Hou J, Szaflarski DM, Simon JD. Quantifying the Association Constant and Stoichiometry of the Complexation between Colloidal Polyacrylate-Coated Gold Nanoparticles and Chymotrypsin. J Phys Chem B 2013; 117:4587-93. [DOI: 10.1021/jp3087489] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jie Hou
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United
States
| | - Diane M. Szaflarski
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904,
United States
| | - John D. Simon
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United
States
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904,
United States
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Manna A, Chakravorti S. Role of block copolymer-micelle nanocomposites in dye–bovine serum albumin binding: a combined experimental and molecular docking study. ACTA ACUST UNITED AC 2013; 9:246-57. [DOI: 10.1039/c2mb25368b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Interactions between solubilized polymer molecules and blood components. J Control Release 2012; 160:14-24. [DOI: 10.1016/j.jconrel.2012.02.005] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Accepted: 02/01/2012] [Indexed: 12/19/2022]
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Li L, Xiong S, Wang Y, Song G, Wu S, Chu PK, Xu Z. Interaction Between Fluorinated Amphiphilic Copolymer P(HFMA)-g-P(SPEG) and BSA. J DISPER SCI TECHNOL 2011. [DOI: 10.1080/01932691.2010.498270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Biedermann F, Rauwald U, Zayed JM, Scherman OA. A supramolecular route for reversible protein-polymer conjugation. Chem Sci 2011. [DOI: 10.1039/c0sc00435a] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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Qiao Y, Zhao J, Li P, Wang J, Feng J, Wang W, Sun H, Ma Y, Yuan Z. Adsorbents with high selectivity for uremic middle molecular peptides containing the Asp-Phe-Leu-Ala-Glu sequence. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:7181-7187. [PMID: 20201581 DOI: 10.1021/la904272e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Asp-Phe-Leu-Ala-Glu (DE5) is a frequent sequence of many toxic middle molecular peptides that accumulate in uremic patients. To eliminate these peptides by hemoperfusion, three adsorbents (CP1-Zn(2+), CP2-Zn(2+), and CP3-Zn(2+)) were designed on the basis of coordination and hydrophobic interactions. Adsorption experiments indicated that CP2-Zn(2+) had the highest affinity for DE5 among these three adsorbents. Also, the adsorption capacity of CP2-Zn(2+) in DE5 and DE5-containing peptides was about 2-6 times higher than that of peptides without the DE5 sequence. Linear polymers bearing the same functional groups of the adsorbents were used as models to study the adsorption mechanism via isothermal titration calorimetry (ITC) and computer-aided analyses. The results indicated that coordination and hydrophobic interactions played the most important roles in their affinity. When two carboxyl moieties on Asp and Glu residues coordinated to CP2-Zn(2+), the hydrophobic interaction took place by the aggregation of the hydrophobic amino acid residues with phenyl group on CP2-Zn(2+). The optimal collaboration of these interactions led to the tight binding and selective adsorption of DE5-containing peptides onto CP2-Zn(2+). These results may provide new insight into the design of affinity adsorbents for peptides containing DE5-like sequences.
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Affiliation(s)
- Yitao Qiao
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Nankai University, Tianjin 300071, PR China
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Survey of the year 2008: applications of isothermal titration calorimetry. J Mol Recognit 2010; 23:395-413. [DOI: 10.1002/jmr.1025] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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SYNTHESIS OF AMPHIPHILIC GRAFT FLUORO-COPOLYMERS AND THEIR INTERACTION WITH BOVINE SERUM ALBUMIN. ACTA POLYM SIN 2010. [DOI: 10.3724/sp.j.1105.2010.00149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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El-Sherif H, El-Masry M, Taleb MFA. pH-sensitive hydrogels based on bovine serum albumin for anticancer drug delivery. J Appl Polym Sci 2010. [DOI: 10.1002/app.31301] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Xiong SD, Li L, Wu SL, Xu ZS, Chu PK. Synthesis and properties of fluorine-containing amphiphilic graft copolymer P(HFMA)-g-P(SPEG). ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23541] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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