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Zhong J, Jia J, Lyu Q, Chen G, Fu S. Production of whey protein nanofiber as a carrier for copper entrapment. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2022.103035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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2
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Leclercq L, Vert M. Comparison between protein repulsions by diblock PLA-PEO and albumin nanocoatings using OWLS. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2016; 28:177-193. [DOI: 10.1080/09205063.2016.1262160] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Laurent Leclercq
- Faculty of Pharmacy, IBMM-UMR CNRS 5247, University of Montpellier – CNRS, Montpellier Cedex 5, France
| | - Michel Vert
- Faculty of Pharmacy, IBMM-UMR CNRS 5247, University of Montpellier – CNRS, Montpellier Cedex 5, France
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Samanta N, Luong TQ, Das Mahanta D, Mitra RK, Havenith M. Effect of Short Chain Poly(ethylene glycol)s on the Hydration Structure and Dynamics around Human Serum Albumin. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:831-837. [PMID: 26720549 DOI: 10.1021/acs.langmuir.5b03884] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We report the changes in the hydration dynamics around a globular protein, human serum albumin (HSA), in the presence of two short chain crowding agents, namely poly(ethylene glycol)s (PEG 200 and 400). The change in the network water structure is investigated using FTIR spectroscopy in the far-infrared (FIR) frequency range. Site specific changes are obtained by time-resolved fluorescence spectroscopic technique using the intrinsic fluorophore tryptophan (Trp214) of HSA. The collective hydration dynamics of HSA in the presence of PEG molecules are obtained using terahertz (THz) time domain spectroscopy (TTDS) and high intensity p-Ge THz measurements. Our study affirms a considerable perturbation of HSA hydration beyond a critical concentration of PEG.
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Affiliation(s)
- Nirnay Samanta
- Department of Chemical, Biological and Macromolecular Sciences, S.N. Bose National Centre for Basic Sciences , Block JD, Sector III, Salt Lake, Kolkata 700098, India
| | - Trung Quan Luong
- Department of Physical Chemistry II, Ruhr-University Bochum , 44780 Bochum, Germany
| | - Debasish Das Mahanta
- Department of Chemical, Biological and Macromolecular Sciences, S.N. Bose National Centre for Basic Sciences , Block JD, Sector III, Salt Lake, Kolkata 700098, India
| | - Rajib Kumar Mitra
- Department of Chemical, Biological and Macromolecular Sciences, S.N. Bose National Centre for Basic Sciences , Block JD, Sector III, Salt Lake, Kolkata 700098, India
| | - Martina Havenith
- Department of Physical Chemistry II, Ruhr-University Bochum , 44780 Bochum, Germany
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Samanta N, Mahanta DD, Hazra S, Kumar GS, Mitra RK. Short chain polyethylene glycols unusually assist thermal unfolding of human serum albumin. Biochimie 2014; 104:81-9. [DOI: 10.1016/j.biochi.2014.05.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 05/22/2014] [Indexed: 10/25/2022]
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Vega-Lugo AC, Lim LT. Effects of poly(ethylene oxide) and pH on the electrospinning of whey protein isolate. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/polb.23106] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Zielińska-Dawidziak M, Błaszak R, Piasecka-Kwiatkowska D. Influence of magnetic field on aqueous two-phase extraction of horse ferritin in the polyethylene glycol/hydroxyethyl starch system. Anal Chim Acta 2012; 716:11-5. [DOI: 10.1016/j.aca.2011.02.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 02/04/2011] [Accepted: 02/17/2011] [Indexed: 10/18/2022]
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Salmaso S, Caliceti P. Self assembling nanocomposites for protein delivery: supramolecular interactions of soluble polymers with protein drugs. Int J Pharm 2011; 440:111-23. [PMID: 22209998 DOI: 10.1016/j.ijpharm.2011.12.029] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2011] [Revised: 12/04/2011] [Accepted: 12/16/2011] [Indexed: 12/11/2022]
Abstract
Translation of therapeutic proteins to pharmaceutical products is often encumbered by their inadequate physicochemical and biopharmaceutical properties, namely low stability and poor bioavailability. Over the last decades, several academic and industrial research programs have been focused on development of biocompatible polymers to produce appropriate formulations that provide for enhanced therapeutic performance. According to their physicochemical properties, polymers have been exploited to obtain a variety of formulations including biodegradable microparticles, 3-dimensional hydrogels, bioconjugates and soluble nanocomposites. Several soluble polymers bearing charges or hydrophobic moieties along the macromolecular backbone have been found to physically associate with proteins to form soluble nanocomplexes. Physical complexation is deemed a valuable alternative tool to the chemical bioconjugation. Soluble protein/polymer nanocomplexes formed by physical specific or unspecific interactions have been found in fact to possess peculiar physicochemical, and biopharmaceutical properties. Accordingly, soluble polymeric systems have been developed to increase the protein stability, enhance the bioavailability, promote the absorption across the biological barriers, and prolong the protein residence in the bloodstream. Furthermore, a few polymers have been found to favour the protein internalisation into cells or boost their immunogenic potential by acting as immunoadjuvant in vaccination protocols.
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Affiliation(s)
- Stefano Salmaso
- Department of Pharmaceutical Sciences, University of Padua, Via F. Marzolo, 5, 35131 Padua, Italy
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8
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Iodinated blood pool contrast media for preclinical X-ray imaging applications – A review. Biomaterials 2010; 31:6249-68. [DOI: 10.1016/j.biomaterials.2010.04.066] [Citation(s) in RCA: 197] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2010] [Accepted: 04/29/2010] [Indexed: 11/23/2022]
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9
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Kim S, Shi Y, Kim JY, Park K, Cheng JX. Overcoming the barriers in micellar drug delivery: loading efficiency, in vivo stability, and micelle-cell interaction. Expert Opin Drug Deliv 2010; 7:49-62. [PMID: 20017660 DOI: 10.1517/17425240903380446] [Citation(s) in RCA: 403] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
IMPORTANCE OF THE FIELD Spontaneously constructed from block copolymers in aqueous media, the polymer micelle has been extensively studied as a potential carrier of poorly water-soluble drugs, but cellular uptake pathways and stability of micelles in blood have not yet been clearly understood. An in-depth insight into the physical and biological behaviors of polymer micelles is necessitated for designing next-generation micelles. AREAS COVERED IN THIS REVIEW This review suggests possible solutions to improve micellar drug loading capacity, scrutinizes the parameters influencing the micelle stability in blood, and also discusses the fate of micelles in cellular and in vivo environment, respectively. Direct and indirect evidences from the literatures mostly published after 90's were collected, analyzed and summarized. WHAT THE READER WILL GAIN A critical analysis of micelle's stability in vivo and micelle-cell interaction is provided to highlight the key issues to be addressed to affirm that micelle can properly work as a drug carrier in clinical settings. TAKE HOME MESSAGE With a clear understanding of its behaviors in biological environment, the polymer micelle is a promising nanocarrier for chemotherapy.
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Affiliation(s)
- Sungwon Kim
- Purdue University, Department of Industrial and Physical Pharmacy, West Lafayette, IN 47907, USA
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Kelarakis A, Castelletto V, Krysmann MJ, Havredaki V, Viras K, Hamley IW. Interactions of Bovine Serum Albumin with Ethylene Oxide/Butylene Oxide Copolymers in Aqueous Solution. Biomacromolecules 2008; 9:1366-71. [DOI: 10.1021/bm800046m] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Antonios Kelarakis
- National and Kapodistrian University of Athens, Department of Chemistry, Physical Chemistry Laboratory, Panepistimiopolis, 157 71 Athens, Greece, and School of Chemistry, The University of Reading, Post Office Box 224, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Valeria Castelletto
- National and Kapodistrian University of Athens, Department of Chemistry, Physical Chemistry Laboratory, Panepistimiopolis, 157 71 Athens, Greece, and School of Chemistry, The University of Reading, Post Office Box 224, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Marta J. Krysmann
- National and Kapodistrian University of Athens, Department of Chemistry, Physical Chemistry Laboratory, Panepistimiopolis, 157 71 Athens, Greece, and School of Chemistry, The University of Reading, Post Office Box 224, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Vasiliki Havredaki
- National and Kapodistrian University of Athens, Department of Chemistry, Physical Chemistry Laboratory, Panepistimiopolis, 157 71 Athens, Greece, and School of Chemistry, The University of Reading, Post Office Box 224, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Kyriakos Viras
- National and Kapodistrian University of Athens, Department of Chemistry, Physical Chemistry Laboratory, Panepistimiopolis, 157 71 Athens, Greece, and School of Chemistry, The University of Reading, Post Office Box 224, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Ian W. Hamley
- National and Kapodistrian University of Athens, Department of Chemistry, Physical Chemistry Laboratory, Panepistimiopolis, 157 71 Athens, Greece, and School of Chemistry, The University of Reading, Post Office Box 224, Whiteknights, Reading RG6 6AD, United Kingdom
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Panova IG, Topchieva IN. Rotaxanes and polyrotaxanes. Their synthesis and the supramolecular devices based on them. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc2001v070n01abeh000608] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Jiang YY, Liu C, Hong MH, Zhu SJ, Pei YY. Tumor cell targeting of transferrin-PEG-TNF-alpha conjugate via a receptor-mediated delivery system: design, synthesis, and biological evaluation. Bioconjug Chem 2007; 18:41-9. [PMID: 17226956 DOI: 10.1021/bc060135f] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
PEGylation is a procedure of growing interest for enhancing the therapeutic and biotechnological potential of peptides and proteins. Transferrin (Tf) has been proposed to be useful for targeting cancer cells. The aim of this study was to modify PEGylated recombinant human tumor necrosis factor alpha (PEG-TNF-alpha) with Tf to form Tf-PEG-TNF-alpha conjugates, which would maintain the advantages of PEGylation and also achieve the function of active targeting to tumor cells. In PEGylation reactions with 5-, 20-, 40-, and 60-fold molar excess of 3.4 kDa N-hydroxysuccinimide-PEG-maleimide (PT1, PT2, PT3, and PT4, respectively), PEG-TNF-alpha conjugates with different PEG chains were synthesized. A perfusion chromatography technique using a cation-exchange column was introduced to purify PEG-TNF-alpha conjugates. PT4 with about five PEG chains was selected as a lead candidate due to highest extent of PEGylation and maximum reaction yield. Thiolated Tf was conjugated to the maleimide group at the distal end of the PEG chains on the PEG-TNF-alpha conjugates, with the resulting Tf-PEG-TNF-alpha conjugates after purification containing approximately one Tf ligand on one TNF-alpha molecule. The conjugate of Tf and PT4 (TPT4) was selected to assess the specificity and affinity to transferrin receptor (TfR) on two kinds of tumor cells, K562 and KB. Both the receptor binding assays and the competition experiments were performed using radioligand binding analysis. The results demonstrated that TPT4 as well as Tf bound specifically to the TfR on the tumor cell surface and the affinity of the conjugate to TfR was similar to that of native Tf. In contrast, PEG-TNF-alpha demonstrated no specificity. The biodistribution and antitumor effects were investigated in S-180 tumor-bearing mice. It was found that TPT4 could markedly alter in vivo behavioral characteristics of TNF-alpha. Compared with TNF-alpha and PT4, extravasated TPT4 in tumor tissues exhibited a significantly delayed blood clearance and the highest intratumoral TNF-alpha levels. Furthermore, the inhibitory rate of tumor of TPT4 enhanced 5.3- and 1.8-fold over that of TNF-alpha and PT4, indicating that TPT4 exhibited the highest antitumor activity. These results suggested that Tf-PEG-TNF-alpha was a useful long circulating conjugate with the capabilities of specific receptor binding resulting in enhanced antitumor activity of TNF-alpha.
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Affiliation(s)
- Yan-Yan Jiang
- Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai, China, 200032
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Pemawansa KP, Khan IM. Water Soluble and Water Stable Non‐Covalent Adducts of Sodium Poly(α,L‐glutamate)/Poly(ethylene glycol). Method of Preparation and Characterization of Structure. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2007. [DOI: 10.1080/10601320500405885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | - Ishrat M. Khan
- a Department of Chemistry , Clark Atlanta University , Atlanta , GA
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Bikram M, Lee M, Chang CW, Janát-Amsbury MM, Kern SE, Kim SW. Long-circulating DNA-complexed biodegradable multiblock copolymers for gene delivery: degradation profiles and evidence of dysopsonization. J Control Release 2004; 103:221-33. [PMID: 15710513 DOI: 10.1016/j.jconrel.2004.11.011] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2004] [Revised: 11/02/2004] [Accepted: 11/02/2004] [Indexed: 11/23/2022]
Abstract
Biodegradable cationic polymers have become promising alternatives to traditional polycationic gene delivery systems in which the high charge densities of high molecular weight polymers contribute significantly to cellular toxicities. Previous research has shown that biodegradable, multiblock copolymers (MBC), PEG-PLL-g-16% His, are efficient gene carriers with negligible cellular toxicities. The present research was designed to characterize the polymer degradation as well as to determine the biodistribution of the MBC after systemic administration. Polymer degradation was performed in buffer as a function of pH, in serum and within polymer/pDNA complexes. The MBC exhibited exponential decay with a half-life (t1/2) of approximately 14 min at pH 9.0, approximately 5 h at pH 7.4 and approximately 2 h in serum. However, there was little or no degradation observed at pH 4.0 and the MBC within the complexes degraded between 4 and 8 h in serum. Biodistribution data performed with fluorescently labeled polymer and pDNA revealed that intact complexes remained in the blood up to 3 days, which was also reflected in the organs as a function of time. Therefore, the cumulative data suggest that PEG may be sterically stabilizing complexes in vivo via dysopsonization in which serum proteins mask the complexes from elements of the reticuloendothelial system (RES).
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Affiliation(s)
- Malavosklish Bikram
- Center for Controlled Chemical Delivery (CCCD), Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Biomedical Polymers Research Building, Room 205, Salt Lake City, UT 84112-5820, USA.
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Almeida NL, Oliveira CLP, Torriani IL, Loh W. Calorimetric and structural investigation of the interaction of lysozyme and bovine serum albumin with poly(ethylene oxide) and its copolymers. Colloids Surf B Biointerfaces 2004; 38:67-76. [PMID: 15465306 DOI: 10.1016/j.colsurfb.2004.08.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2004] [Revised: 08/17/2004] [Accepted: 08/17/2004] [Indexed: 10/26/2022]
Abstract
This work reports investigations aiming at verifying the occurrence of specific interactions between lysozyme or bovine serum albumin (BSA) and poly(ethylene oxide) and its copolymers with poly(propylene oxide). Thermal stability of these proteins, followed by means of high sensitivity DSC, was found to be mostly unaffected by the presence of these polymers. Chromatographic experiments (reverse-phase HPLC and size exclusion chromatrography) did not reveal any sign of specific interaction for these mixtures, either. Isothermal titration calorimetry revealed an increase in enthalpy for the mixtures, represented by a positive enthalpy of transfer for these proteins from buffer to polymer solutions. Moreover, SAXS analyses confirmed that at ambient temperatures these polymers do not affect lysozyme structure. In summary, no evidence is found to support earlier suggestions that some kind of complex could be formed between these proteins and poly(ethylene oxide) or its copolymers, but the present results suggest the occurrence of entropically driven hydrophobic effects.
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Affiliation(s)
- Nara L Almeida
- Instituto de Química, Universidade Estadual de Campinas, Caixa Postal 6154, 13083-970 Campinas, SP, Brazil
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Vert M, Domurado D. Poly(ethylene glycol): protein-repulsive or albumin-compatible? JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2001; 11:1307-17. [PMID: 11261873 DOI: 10.1163/156856200744345] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In the literature, many papers deal with the behavior of proteins in aqueous media in the presence of poly(ethylene glycol) (PEG) molecules or poly(ethylene oxide) (PEO) segments, physically adsorbed onto, or covalently attached to, macromolecules or to solid surfaces. In particular, it is well known that PEO segments make foreign materials stealthy, i.e. they are much less detected by the immune system either through humoral reactions or, at the cell level, through opsonins. Revisiting the literature led us to challenge the largely accepted opinion that the decreased recognition of PEO segment-bearing foreign macromolecules and particles by the mononuclear phagocyte system is primarily the consequence of the repulsion of all blood proteins by PEG segments through the excluded volume effect. This challenge is based on the finding that albumin and PEG are compatible in phosphate-buffered saline at room temperature and at concentrations comparable to those measured by others on the surface of PEO segment-bearing species, whereas fibrinogen and PEG phase-separated and were incompatible despite the much lower concentration of the latter protein. According to literature and to these observations, it is proposed that the stealth effect induced by PEO segments is primarily due to the compatibility between PEO segments of intermediate molar mass and albumin, thus rendering PEO-bearing macromolecules or surfaces to look like native albumin. Under such conditions, the hospitality offered by PEG macromolecules or PEO segments to albumin, the dominant plasma protein, results in a 'chameleon' effect that prevents the activation of other PEG-compatible or -incompatible plasma proteins or cells involved in foreign body recognition and elimination. PEG with molar masses > or = 8000 did not accommodate albumin in agreement with the excluded volume phenomenon.
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Affiliation(s)
- M Vert
- Centre de Recherche sur les Biopolymères Artificiels, UMR CNRS 5473, University Montpellier I, Faculty of Pharmacy, France.
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Tondi D, Powers RA, Caselli E, Negri MC, Blázquez J, Costi MP, Shoichet BK. Structure-based design and in-parallel synthesis of inhibitors of AmpC beta-lactamase. CHEMISTRY & BIOLOGY 2001; 8:593-611. [PMID: 11410378 DOI: 10.1016/s1074-5521(01)00034-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Group I beta-lactamases are a major cause of antibiotic resistance to beta-lactams such as penicillins and cephalosporins. These enzymes are only modestly affected by classic beta-lactam-based inhibitors, such as clavulanic acid. Conversely, small arylboronic acids inhibit these enzymes at sub-micromolar concentrations. Structural studies suggest these inhibitors bind to a well-defined cleft in the group I beta-lactamase AmpC; this cleft binds the ubiquitous R1 side chain of beta-lactams. Intriguingly, much of this cleft is left unoccupied by the small arylboronic acids. RESULTS To investigate if larger boronic acids might take advantage of this cleft, structure-guided in-parallel synthesis was used to explore new inhibitors of AmpC. Twenty-eight derivatives of the lead compound, 3-aminophenylboronic acid, led to an inhibitor with 80-fold better binding (2; K(i) 83 nM). Molecular docking suggested orientations for this compound in the R1 cleft. Based on the docking results, 12 derivatives of 2 were synthesized, leading to inhibitors with K(i) values of 60 nM and with improved solubility. Several of these inhibitors reversed the resistance of nosocomial Gram-positive bacteria, though they showed little activity against Gram-negative bacteria. The X-ray crystal structure of compound 2 in complex with AmpC was subsequently determined to 2.1 A resolution. The placement of the proximal two-thirds of the inhibitor in the experimental structure corresponds with the docked structure, but a bond rotation leads to a distinctly different placement of the distal part of the inhibitor. In the experimental structure, the inhibitor interacts with conserved residues in the R1 cleft whose role in recognition has not been previously explored. CONCLUSIONS Combining structure-based design with in-parallel synthesis allowed for the rapid exploration of inhibitor functionality in the R1 cleft of AmpC. The resulting inhibitors differ considerably from beta-lactams but nevertheless inhibit the enzyme well. The crystal structure of 2 (K(i) 83 nM) in complex with AmpC may guide exploration of a highly conserved, largely unexplored cleft, providing a template for further design against AmpC beta-lactamase.
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Affiliation(s)
- D Tondi
- Department of Molecular Pharmacology and Biological Chemistry, Northwestern University, Chicago, IL 60611, USA
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