1
|
Berikbol N, Klivenko A, Markin V, Orazzhanova L, Yelemessova G, Kassymova Z. Development of Interpolyelectrolyte Complex Based on Chitosan and Carboxymethylcellulose for Stabilizing Sandy Soil and Stimulating Vegetation of Scots Pine ( Pinus sylvestris L.). Polymers (Basel) 2024; 16:2373. [PMID: 39204592 PMCID: PMC11359870 DOI: 10.3390/polym16162373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2024] [Revised: 08/13/2024] [Accepted: 08/18/2024] [Indexed: 09/04/2024] Open
Abstract
The issue of water and wind erosion of soil remains critically important. Polymeric materials offer a promising solution to this problem. In this study, we prepared and applied an interpolyelectrolyte complex (IPEC) composed of the biopolymers chitosan and sodium carboxymethyl cellulose (Na-CMC) for the structuring of forest sandy soils and the enhancement of the pre-sowing treatment of Scots pine (Pinus sylvestris L.) seeds. A nonstoichiometric IPEC [Chitosan]:[Na-CMC] = [3:7] was synthesized, and its composition was determined using gravimetry, turbidimetry, and rheoviscosimetry methods. Soil surface treatment with IPEC involved the sequential application of a chitosan polycation (0.006% w/w) and Na-CMC polyanion (0.02% w/w) relative to the air-dry soil weight. The prepared IPEC increased soil moisture by 77%, extended water retention time by sixfold, doubled the content of agronomically valuable soil fractions > 0.25 mm, enhanced soil resistance to water erosion by 64% and wind erosion by 81%, and improved the mechanical strength of the soil-polymer crust by 17.5 times. Additionally, IPEC application resulted in slight increases in the content of humus, mobile potassium, mobile phosphorus, ammonium nitrogen, and mineral salts in the soil while maintaining soil solution pH stability and significantly increasing nitrate nitrogen levels. The novel application technologies of biopolymers and IPEC led to a 16-25% improvement in Scots pine seed germination and seedling growth metrics.
Collapse
Affiliation(s)
- Nazira Berikbol
- Department of Chemistry and Ecology, Research School of Physical and Chemical Sciences, Shakarim University of Semey, Semey 071412, Kazakhstan; (N.B.); (A.K.); (L.O.); (G.Y.)
| | - Alexey Klivenko
- Department of Chemistry and Ecology, Research School of Physical and Chemical Sciences, Shakarim University of Semey, Semey 071412, Kazakhstan; (N.B.); (A.K.); (L.O.); (G.Y.)
| | - Vadim Markin
- Department of Organic Chemistry, Institute of Chemistry and Pharmaceutical Technologies, Altai State University, Barnaul 656049, Russia;
| | - Lazzyat Orazzhanova
- Department of Chemistry and Ecology, Research School of Physical and Chemical Sciences, Shakarim University of Semey, Semey 071412, Kazakhstan; (N.B.); (A.K.); (L.O.); (G.Y.)
| | - Gulnur Yelemessova
- Department of Chemistry and Ecology, Research School of Physical and Chemical Sciences, Shakarim University of Semey, Semey 071412, Kazakhstan; (N.B.); (A.K.); (L.O.); (G.Y.)
| | - Zhanar Kassymova
- Department of Chemistry and Ecology, Research School of Physical and Chemical Sciences, Shakarim University of Semey, Semey 071412, Kazakhstan; (N.B.); (A.K.); (L.O.); (G.Y.)
| |
Collapse
|
2
|
Ghosh R, Singh B, Basu S, Mondal A, Maiti PK, De M. Reversing the Trend: Deciphering Self-Assembly of Unconventional Amphiphiles Having Both Alkyl-Chain and PEG. Chempluschem 2024; 89:e202400147. [PMID: 38623044 DOI: 10.1002/cplu.202400147] [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: 02/22/2024] [Revised: 04/15/2024] [Accepted: 04/15/2024] [Indexed: 04/17/2024]
Abstract
In the field of molecular self-assembly, the core of an assembly is always made up of hydrophobic moiety like a long alkyl chain, whereas the outer part has always been a hydrophilic moiety such as poly(ethylene glycol) (PEG), or charged species. Hence, reversing the trend to manifest self-assembled structures with a PEG core and a surface consisting of alkyl chains in aqueous system is incredibly challenging. Herein, we architected a unique class of cationic bolaamphiphiles containing low molecular weight PEG and alkyl chains of different lengths. The bolaamphiphiles spontaneously form vesicles without external stimuli. These vesicles are unprecedented because PEG makes up the vesicle core, while the alkyl chains appear on the vesicles' exterior. Hence, this particular design reverses the usual trend of self-assembly formation. The vesicle size increases with the increase in alkyl chain-length. To our great surprise, we obtained large micelles for longest alkyl-chain amphiphile, which in turn act as a gemini amphiphile. The shift from a particular bolaamphiphile to gemini amphiphile with the variation of alkyl chain is also unexplored. Therefore, this specific class of self-assembled structure would compound a new paradigm in molecular self-assembly and supramolecular chemistry.
Collapse
Affiliation(s)
- Rita Ghosh
- Department of Organic Chemistry, Indian Institute of Science, Bengaluru, 560012, India
| | - Bharat Singh
- Department of Physics, Indian Institute of Science, Bengaluru, 560012, India
| | - Subhadip Basu
- Department of Physics, Indian Institute of Science, Bengaluru, 560012, India
| | - Avijit Mondal
- Department of Organic Chemistry, Indian Institute of Science, Bengaluru, 560012, India
| | - Prabal Kumar Maiti
- Department of Physics, Indian Institute of Science, Bengaluru, 560012, India
| | - Mrinmoy De
- Department of Organic Chemistry, Indian Institute of Science, Bengaluru, 560012, India
| |
Collapse
|
3
|
Popova TO, Borisov OV, Zhulina EB. Polyelectrolyte Brushes with Protein-Like Nanocolloids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:1232-1246. [PMID: 38176061 DOI: 10.1021/acs.langmuir.3c02556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Electrostatic interaction of ampholytic nanocolloidal particles (NPs), which mimic globular proteins, with polyelectrolyte brushes is analyzed within mean-field Poisson-Boltzmann approximation. In accordance with experimental findings, the theory predicts that an electrostatic driving force for the particle uptake by the brush may emerge when the net charge of the particle in the buffer and the charge of the brush are of the same sign. The origin of this driving force is change in the ionization state of weak cationic and anionic groups on the NP surface provoked by interaction with the brush. In experimental systems, the ionic interactions are complemented by excluded-volume, hydrophobic, and other types of interactions that all together control NP uptake by or expulsion from the brush. Here, we focus on the NP-brush ionic interactions. It is demonstrated that deviation between the buffer pH and the NP isoelectric point, considered usually as the key control parameter, does not uniquely determine the insertion free energy patterns. The latter depends also on the proportion of cationic and anionic groups in the NPs and their specific ionization constants as well as on salt concentration in the buffer. The analysis of the free energy landscape proves that a local minimum in the free energy inside the brush appears, provided the NP charge reversal occurs upon insertion into the brush. This minimum corresponds either to a thermodynamically stable or to a metastable state, depending on the pH offset from the IEP and salt concentration, and is separated from the bulk of the solution by a free energy barrier. The latter, being fairly independent of salt concentration in height, may strongly impede the NP absorption kinetically even when it is thermodynamically favorable. Hence, change reversal is a necessary but insufficient condition for the uptake of the NPs by similarly charged polyelectrolyte brushes.
Collapse
Affiliation(s)
- Tatiana O Popova
- ITMO University, 197101 St. Petersburg, Russia
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, 199004 St. Petersburg, Russia
| | - Oleg V Borisov
- ITMO University, 197101 St. Petersburg, Russia
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, 199004 St. Petersburg, Russia
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux, CNRS, Université de Pau et des Pays de l'Adour UMR 5254, Pau 64053, France
| | - Ekaterina B Zhulina
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, 199004 St. Petersburg, Russia
| |
Collapse
|
4
|
Jain A, Bhardwaj K, Bansal M. Polymeric Micelles as Drug Delivery System: Recent Advances, Approaches, Applications and Patents. Curr Drug Saf 2024; 19:163-171. [PMID: 37282644 DOI: 10.2174/1574886318666230605120433] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 10/18/2022] [Accepted: 11/29/2022] [Indexed: 06/08/2023]
Abstract
Administering therapeutics through the oral route is a pervasive and widely approved medication administration approach. However, it has been found that many drugs show low systemic absorption when delivered through this route. Such limitations of oral drug delivery can be overcome by polymeric micelles acting as vehicles. As a result, they improve drug absorption by protecting loaded drug substances from the gastrointestinal system's hostile conditions, allowing controlled drug release at a specific site, extending the time spent in the gut through mucoadhesion, and inhibiting the efflux pump from reducing therapeutic agent accumulation. To promote good oral absorption of a weakly water-soluble medicinal drug, the loaded medicine should be protected from the hostile atmosphere of the GI tract. Polymeric micelles can be stacked with a broad assortment of ineffectively dissolvable medications, improving bioavailability. This review discusses the major mechanism, various types, advantages, and limitations for developing the polymeric micelle system and certain micellar drug delivery system applications. The primary goal of this review is to illustrate how polymeric micelles can be used to deliver poorly water-soluble medications.
Collapse
Affiliation(s)
- Anushka Jain
- Department of Pharmacy, Raj Kumar Goel Institute of Technology (Pharmacy), 5-Km. Stone, Delhi-Meerut Road, Ghaziabad, Uttar Pradesh, 201003, India
| | - Kamini Bhardwaj
- Department of Pharmacy, Raj Kumar Goel Institute of Technology (Pharmacy), 5-Km. Stone, Delhi-Meerut Road, Ghaziabad, Uttar Pradesh, 201003, India
| | - Mukesh Bansal
- Department of Pharmacy, Raj Kumar Goel Institute of Technology (Pharmacy), 5-Km. Stone, Delhi-Meerut Road, Ghaziabad, Uttar Pradesh, 201003, India
| |
Collapse
|
5
|
Rumyantsev AM, Zhulina EB, Borisov OV. Surface-Immobilized Interpolyelectrolyte Complexes Formed by Polyelectrolyte Brushes. ACS Macro Lett 2023; 12:1727-1732. [PMID: 38061050 DOI: 10.1021/acsmacrolett.3c00548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
A scaling theory of interaction and complex formation between planar polyelectrolyte (PE) brush and oppositely charged mobile linear PEs is developed. Counterion release is found to be the main driving force for the complexation. An interpolyelectrolyte coacervate complex (IPEC) between the brush and oppositely charged mobile PEs is formed at moderate grafting density and low salt concentration. At higher grafting density mobile chains penetrate the brush, but the brush structure is controlled by the balance between entropic elasticity and nonelectrostatic short-range interactions, as happens in a neutral brush. An increase in salt concentration beyond the theoretically predicted threshold leads to the release of the guest polyions from the brush. For brushes with moderate grafting density, complexation with oppositely charged guest polyions is predicted to trigger lateral microphase separation and formation of the finite-size surface IPEC clusters. Power law dependencies for the cluster dimensions on the brush grafting density, PE length, and salt concentration are provided.
Collapse
Affiliation(s)
- Artem M Rumyantsev
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Ekaterina B Zhulina
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, 199004 St. Petersburg, Russia
| | - Oleg V Borisov
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, 199004 St. Petersburg, Russia
- CNRS, Université de Pau et des Pays de l'Adour UMR 5254, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux, 64053 Pau, France
| |
Collapse
|
6
|
Popova TO, Zhulina EB, Borisov OV. Interaction of Polyanionic and Polycationic Brushes with Globular Proteins and Protein-like Nanocolloids. Biomimetics (Basel) 2023; 8:597. [PMID: 38132536 PMCID: PMC10741738 DOI: 10.3390/biomimetics8080597] [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: 11/07/2023] [Revised: 11/25/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023] Open
Abstract
A large number of experimental studies have demonstrated that globular proteins can be absorbed from the solution by both polycationic and polyanionic brushes when the net charge of protein globules is of the same or of the opposite sign with respect to that of brush-forming polyelectrolyte chains. Here, we overview the results of experimental studies on interactions between globular proteins and polycationic or polyanionic brushes, and present a self-consistent field theoretical model that allows us to account for the asymmetry of interactions of protein-like nanocolloid particles comprising weak (pH-sensitive) cationic and anionic groups with a positively or negatively charged polyelectrolyte brush. The position-dependent insertion free energy and the net charge of the particle are calculated. The theoretical model predicts that if the numbers of cationic and anionic ionizable groups of the protein are approximately equal, then the interaction patterns for both cationic and anionic brushes at equal offset on the "wrong side" from the isoelectric point (IEP), i.e., when the particle and the brush charge are of the same sign, are similar. An essential asymmetry in interactions of particles with polycationic and polyanionic brushes is predicted when fractions of cationic and anionic groups differ significantly. That is, at a pH above IEP, the anionic brush better absorbs negatively charged particles with a larger fraction of ionizable cationic groups and vice versa.
Collapse
Affiliation(s)
- Tatiana O. Popova
- Chemical Engineering Center, National Research University ITMO, 199004 St. Petersburg, Russia;
- Institute of Macromolecular Compoundsof the Russian Academy of Sciences, 199004 St. Petersburg, Russia;
| | - Ekaterina B. Zhulina
- Institute of Macromolecular Compoundsof the Russian Academy of Sciences, 199004 St. Petersburg, Russia;
| | - Oleg V. Borisov
- Chemical Engineering Center, National Research University ITMO, 199004 St. Petersburg, Russia;
- Institute of Macromolecular Compoundsof the Russian Academy of Sciences, 199004 St. Petersburg, Russia;
- CNRS, Université de Pau et des Pays de l’Adour UMR 5254, Institut des Sciences Analytiques et de Physico-Chimie Pour l’Environnement et les Matériaux, 64053 Pau, France
| |
Collapse
|
7
|
Elancheliyan R, Chauveau E, Truzzolillo D. Impact of polyelectrolyte adsorption on the rheology of concentrated poly( N-isopropylacrylamide) microgel suspensions. SOFT MATTER 2023. [PMID: 37318318 DOI: 10.1039/d3sm00317e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
We explore the impact of three water-soluble polyelectrolytes (PEs) on the flow of concentrated suspensions of poly(N-isopropylacrylamide) (PNIPAm) microgels with thermoresponsive anionic charge density. By progressively adding the PEs to a jammed suspension of swollen microgels, we show that the rheology of the mixtures is remarkably influenced by the sign of the PE charge, PE concentration and hydrophobicity only when the temperature is increased above the microgel volume phase transition temperature Tc, namely when microgels collapse, they are partially hydrophobic and form a volume-spanning colloidal gel. We find that the original gel is strengthened close to the isoelectric point, attained when microgels are mixed with cationic PEs, while PE hydrophobicity rules the gel strengthening at very high PE concentrations. Surprisingly, we find that polyelectrolyte adsorption or partial embedding of PE chains inside the microgel periphery occurs also when anionic polymers of polystyrene sulfonate with a high degree of sulfonation are added. This gives rise to colloidal stabilization and to the melting of the original gel network above Tc. Contrastingly, the presence of polyelectrolytes in suspensions of swollen, jammed microgels results in a weak softening of the original repulsive glass, even when an apparent isoelectric condition is met. Our study puts forward the crucial role of electrostatics in thermosensitive microgels, unveiling an exciting new way to tailor the flow of these soft colloids and highlighting a largely unexplored path to engineer soft colloidal mixtures.
Collapse
Affiliation(s)
- Rajam Elancheliyan
- Laboratoire Charles Coulomb, UMR 5221, CNRS-Université de Montpellier, F-34095 Montpellier, France.
| | - Edouard Chauveau
- Laboratoire Charles Coulomb, UMR 5221, CNRS-Université de Montpellier, F-34095 Montpellier, France.
| | - Domenico Truzzolillo
- Laboratoire Charles Coulomb, UMR 5221, CNRS-Université de Montpellier, F-34095 Montpellier, France.
| |
Collapse
|
8
|
Salamatova TO, Zhulina EB, Borisov OV. Bovine Serum Albumin Interaction with Polyanionic and Polycationic Brushes: The Case Theoretical Study. Int J Mol Sci 2023; 24:ijms24043395. [PMID: 36834807 PMCID: PMC9961975 DOI: 10.3390/ijms24043395] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/23/2023] [Accepted: 02/02/2023] [Indexed: 02/11/2023] Open
Abstract
We apply a coarse-grained self-consistent field Poisson-Boltzmann framework to study interaction between Bovine Serum Albumin (BSA) and a planar polyelectropyte brush. Both cases of negatively (polyanionic) and positively (polycationic) charged brushes are considered. Our theoretical model accounts for (1) re-ionization free energy of the amino acid residues upon protein insertion into the brush; (2) osmotic force repelling the protein globule from the brush; (3) hydrophobic interactions between non-polar areas on the globule surface and the brush-forming chains. We demonstrate that calculated position-dependent insertion free energy exhibits different patterns, corresponding to either thermodynamically favourable BSA absorption in the brush or thermodynamically or kinetically hindered absorption (expulsion) depending on the pH and ionic strength of the solution. The theory predicts that due to the re-ionization of BSA within the brush, a polyanionic brush can efficiently absorb BSA over a wider pH range on the "wrong side" of the isoelectric point (IEP) compared to a polycationic brush. The results of our theoretical analysis correlate with available experimental data and thus validate the developed model for prediction of the interaction patterns for various globular proteins with polyelectrolyte brushes.
Collapse
Affiliation(s)
| | - Ekaterina B. Zhulina
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, 199004 St. Petersburg, Russia
| | - Oleg V. Borisov
- Chemical Engineering Center, ITMO University, 197101 St. Petersburg, Russia
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, 199004 St. Petersburg, Russia
- CNRS, Université de Pau et des Pays de l’Adour UMR 5254, Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Matériaux, 64053 Pau, France
- Correspondence:
| |
Collapse
|
9
|
Zhao Y, Deng X, Tan S, Zhang J, Han J, Wang X, Pei J, Li H, Deng X, Yin C, Yin D, Tian Y, Qian A. Co-Polymer Carrier with Dual Advantages of Cartilage-Penetrating and Targeting Improves Delivery and Efficacy of MicroRNA Treatment of Osteoarthritis. Adv Healthc Mater 2023; 12:e2202143. [PMID: 36511367 DOI: 10.1002/adhm.202202143] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 11/12/2022] [Indexed: 12/14/2022]
Abstract
Osteoarthritis (OA) is a debilitating joint disease affecting nearly 400 million people with no efficient etiological therapies. OA is primarily identified by cartilage destruction, and gradual degeneration of the whole joint would happen when the OA progresses. Hence, cartilage has been identified as the primary therapeutic target of OA. Unfortunately, numerous barriers block the delivery of therapeutic agents into cartilage, including avascular traits and high hardness of the extracellular matrix. Herein, a cartilage-targeting peptide (CAP) modified polyvinylamine (PVAm)- poly (lactic-co-glycolic acid) (PLGA) copolymer (CAP-PVAm-PLGA) is designed, which can form spherical nanoparticles with the r-miR-140 (CPP-NPs). CPP-NPs possessed enhanced mechanical properties due to the introduction of PLGA to vehicles. Meanwhile, CAP endowed the cartilage targeting which facilitated CPP-NPs localization in cartilage. With such dual advantages, CPP-NPs exhibited outstanding penetrability and accumulation in cartilage even subchondral bone, and can penetrate to a depth of 1000 µm into human cartilage. The degeneration area of cartilage is reduced by 65% and synovial inflammation score by 80% in OA mice, and the microarchitecture of subchondral bone is also ameliorated. These studies established a promising platform for therapeutic RNA delivery in OA therapy that overcame the cartilage barriers.
Collapse
Affiliation(s)
- Yipu Zhao
- Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Xudong Deng
- Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Shenxing Tan
- Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Jie Zhang
- Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Jiangfan Han
- Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Xue Wang
- Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Jiawei Pei
- Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Hui Li
- Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi, P. R. China
| | - Xiaoni Deng
- Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Chong Yin
- Department of Clinical Laboratory, Academician (expert) workstation, Lab of epigenetics and RNA therapy, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000, P. R. China
| | - Dachuan Yin
- Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Ye Tian
- Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Airong Qian
- Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| |
Collapse
|
10
|
Pereira PA, Serra MES, Serra AC, Coelho JFJ. Application of vinyl polymer-based materials as nucleic acids carriers in cancer therapy. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2022; 14:e1820. [PMID: 35637638 DOI: 10.1002/wnan.1820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 04/13/2022] [Accepted: 05/08/2022] [Indexed: 06/15/2023]
Abstract
Nucleic acid-based therapies have changed the paradigm of cancer treatment, where conventional treatment modalities still have several limitations in terms of efficacy and severe side effects. However, these biomolecules have a short half-life in vivo, requiring multiple administrations, resulting in severe suffering, discomfort, and poor patient compliance. In the early days of (nano)biotechnology, these problems caused concern in the medical community, but recently it has been recognized that these challenges can be overcome by developing innovative formulations. This review focuses on the use of vinyl polymer-based materials for the protection and delivery of nucleic acids in cancer. First, an overview of the properties of nucleic acids and their versatility as drugs is provided. Then, key information on the achievements to date, the most effective delivery methods, and the evaluation of functionalization approaches (stimulatory strategies) are critically discussed to highlight the importance of vinyl polymers in the new cancer treatment approaches. This article is categorized under: Nanotechnology Approaches to Biology > Nanoscale Systems in Biology Therapeutic Approaches and Drug Discovery > Nanomedicine for Oncologic Disease Biology-Inspired Nanomaterials > Nucleic Acid-Based Structures.
Collapse
Affiliation(s)
- Patrícia Alexandra Pereira
- Department of Chemical Engineering, CEMMPRE, University of Coimbra, Rua Sílvio Lima-Pólo II, Coimbra, Portugal
- IPN, Instituto Pedro Nunes, Associação para a Inovação e Desenvolvimento em Ciência e Tecnologia, Rua Pedro Nunes, Coimbra, Portugal
| | | | - Arménio C Serra
- Department of Chemical Engineering, CEMMPRE, University of Coimbra, Rua Sílvio Lima-Pólo II, Coimbra, Portugal
| | - Jorge F J Coelho
- Department of Chemical Engineering, CEMMPRE, University of Coimbra, Rua Sílvio Lima-Pólo II, Coimbra, Portugal
| |
Collapse
|
11
|
Servis MJ, Sadhu B, Soderholm L, Clark AE. Amphiphile conformation impacts aggregate morphology and solution structure across multiple lengthscales. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117743] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
12
|
Hastings DE, Bozelli JC, Epand RM, Stöver HDH. Investigating the Effects of Charge Arrangement in Stimuli-Responsive Polyelectrolytes. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01882] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Derrick E. Hastings
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton L8S 4M1, Ontario, Canada
| | - José C. Bozelli
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton L8S 4M1, Ontario, Canada
| | - Richard M. Epand
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton L8S 4M1, Ontario, Canada
| | - Harald D. H. Stöver
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton L8S 4M1, Ontario, Canada
| |
Collapse
|
13
|
Whitfield C, Zhang M, Winterwerber P, Wu Y, Ng DYW, Weil T. Functional DNA-Polymer Conjugates. Chem Rev 2021; 121:11030-11084. [PMID: 33739829 PMCID: PMC8461608 DOI: 10.1021/acs.chemrev.0c01074] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Indexed: 02/07/2023]
Abstract
DNA nanotechnology has seen large developments over the last 30 years through the combination of solid phase synthesis and the discovery of DNA nanostructures. Solid phase synthesis has facilitated the availability of short DNA sequences and the expansion of the DNA toolbox to increase the chemical functionalities afforded on DNA, which in turn enabled the conception and synthesis of sophisticated and complex 2D and 3D nanostructures. In parallel, polymer science has developed several polymerization approaches to build di- and triblock copolymers bearing hydrophilic, hydrophobic, and amphiphilic properties. By bringing together these two emerging technologies, complementary properties of both materials have been explored; for example, the synthesis of amphiphilic DNA-polymer conjugates has enabled the production of several nanostructures, such as spherical and rod-like micelles. Through both the DNA and polymer parts, stimuli-responsiveness can be instilled. Nanostructures have consequently been developed with responsive structural changes to physical properties, such as pH and temperature, as well as short DNA through competitive complementary binding. These responsive changes have enabled the application of DNA-polymer conjugates in biomedical applications including drug delivery. This review discusses the progress of DNA-polymer conjugates, exploring the synthetic routes and state-of-the-art applications afforded through the combination of nucleic acids and synthetic polymers.
Collapse
Affiliation(s)
- Colette
J. Whitfield
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Meizhou Zhang
- Hubei
Key Laboratory of Bioinorganic Chemistry and Materia Medica, School
of Chemistry and Chemical Engineering, Huazhong
University of Science and Technology, Luoyu Road 1037, Hongshan, Wuhan 430074, People’s Republic of China
| | - Pia Winterwerber
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Yuzhou Wu
- Hubei
Key Laboratory of Bioinorganic Chemistry and Materia Medica, School
of Chemistry and Chemical Engineering, Huazhong
University of Science and Technology, Luoyu Road 1037, Hongshan, Wuhan 430074, People’s Republic of China
| | - David Y. W. Ng
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Tanja Weil
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| |
Collapse
|
14
|
Laktionov MY, Zhulina EB, Borisov OV. Proteins and Polyampholytes Interacting with Polyelectrolyte Brushes and Microgels: The Charge Reversal Concept Revised. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:2865-2873. [PMID: 33625232 DOI: 10.1021/acs.langmuir.0c02837] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Weak polyampholytes and globular proteins among them can be efficiently absorbed from solutions by polyelectrolyte brushes or microgels even if the net charge of the polyampholyte is of the same sign as that of the brush/microgel. We use a mean-field approach for calculating the free energy of insertion of a probe polyampholyte molecule into a polyelectrolyte brush/microgel. We anticipate that the insertion of the polyampholyte into similarly charged brush/microgel may be thermodynamically favorable due to the gain in the cumulative re-ionization free energy of the pH-sensitive acidic and basic residues. Importantly, we demonstrate that the polyampholyte (protein) charge sign inversion upon transfer from the bulk of the solution to the brush/microgel does not provide sufficient conditions to assure negative re-ionization free energy balance. Thus (in the absence of other driving or stopping mechanisms), charge sign inversion does not necessarily provoke spontaneous absorption of the polyampholyte into the brush/microgel.
Collapse
Affiliation(s)
- Mikhail Y Laktionov
- St. Petersburg National Research University of Information Technologies, Mechanics and Optics, St. Petersburg 197101, Russia
| | - Ekaterina B Zhulina
- St. Petersburg National Research University of Information Technologies, Mechanics and Optics, St. Petersburg 197101, Russia
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, St. Petersburg 199004, Russia
| | - Oleg V Borisov
- St. Petersburg National Research University of Information Technologies, Mechanics and Optics, St. Petersburg 197101, Russia
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, St. Petersburg 199004, Russia
- CNRS, Université de Pau et des Pays de l'Adour UMR 5254, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux, Pau 64000, France
| |
Collapse
|
15
|
Krishna, Parshad B, Achazi K, Böttcher C, Haag R, Sharma SK. Newer Non-ionic A 2 B 2 -Type Enzyme-Responsive Amphiphiles for Drug Delivery. ChemMedChem 2021; 16:1457-1466. [PMID: 33559331 DOI: 10.1002/cmdc.202100031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 02/05/2021] [Indexed: 12/29/2022]
Abstract
A new series of nonionic gemini amphiphiles have been synthesized in a multi-step chemoenzymatic approach by using a novel A2 B2 -type central core consisting of conjugating glycerol and propargyl bromide on 5-hydroxy isophthalic acid. A pair of hydrophilic monomethoxy poly(ethylene glycol) (mPEG) and hydrophobic linear alkyl chains (C12 /C15 ) were then added to the core to obtain amphiphilic architectures. The aggregation tendency in aqueous media was studied by dynamic light scattering, fluorescence spectroscopy and cryogenic transmission electron microscopy. The nanotransport potential of the amphiphiles was studied for model hydrophobic guests, that is, the dye Nile Red and the drug Nimodipine by using UV/Vis and fluorescence spectroscopy. Evaluation of the viability of amphiphile-treated A549 cells showed them to be well tolerated up to the concentrations studied. Being ester based, these amphiphiles exhibit stimuli-responsive sensitivity towards esterases, and a rupture of amphiphilic architecture was observed in the presence of immobilized Candida antarctica lipase (Novozym 435), thus facilitating release of the encapsulated guest from the aggregate.
Collapse
Affiliation(s)
- Krishna
- Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Badri Parshad
- Department of Chemistry, University of Delhi, Delhi, 110007, India.,Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
| | - Katharina Achazi
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Christoph Böttcher
- Forschungszentrum für Elektronenmikroskopie, Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 36a, 14195, Berlin, Germany
| | - Rainer Haag
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Sunil K Sharma
- Department of Chemistry, University of Delhi, Delhi, 110007, India
| |
Collapse
|
16
|
Hwang D, Ramsey JD, Kabanov AV. Polymeric micelles for the delivery of poorly soluble drugs: From nanoformulation to clinical approval. Adv Drug Deliv Rev 2020; 156:80-118. [PMID: 32980449 DOI: 10.1016/j.addr.2020.09.009] [Citation(s) in RCA: 257] [Impact Index Per Article: 64.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 09/18/2020] [Accepted: 09/21/2020] [Indexed: 01/04/2023]
Abstract
Over the last three decades, polymeric micelles have emerged as a highly promising drug delivery platform for therapeutic compounds. Particularly, poorly soluble small molecules with high potency and significant toxicity were encapsulated in polymeric micelles. Polymeric micelles have shown improved pharmacokinetic profiles in preclinical animal models and enhanced efficacy with a superior safety profile for therapeutic drugs. Several polymeric micelle formulations have reached the clinical stage and are either in clinical trials or are approved for human use. This furthers interest in this field and underscores the need for additional learning of how to best design and apply these micellar carriers to improve the clinical outcomes of many drugs. In this review, we provide detailed information on polymeric micelles for the solubilization of poorly soluble small molecules in topics such as the design of block copolymers, experimental and theoretical analysis of drug encapsulation in polymeric micelles, pharmacokinetics of drugs in polymeric micelles, regulatory approval pathways of nanomedicines, and current outcomes from micelle formulations in clinical trials. We aim to describe the latest information on advanced analytical approaches for elucidating molecular interactions within the core of polymeric micelles for effective solubilization as well as for analyzing nanomedicine's pharmacokinetic profiles. Taking into account the considerations described within, academic and industrial researchers can continue to elucidate novel interactions in polymeric micelles and capitalize on their potential as drug delivery vehicles to help improve therapeutic outcomes in systemic delivery.
Collapse
Affiliation(s)
- Duhyeong Hwang
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, USA
| | - Jacob D Ramsey
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, USA
| | - Alexander V Kabanov
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, USA; Laboratory of Chemical Design of Bionanomaterials, Faculty of Chemistry, M. V. Lomonosov Moscow State University, Moscow 119992, Russia.
| |
Collapse
|
17
|
Osada K. Structural Polymorphism of Single pDNA Condensates Elicited by Cationic Block Polyelectrolytes. Polymers (Basel) 2020; 12:polym12071603. [PMID: 32707655 PMCID: PMC7408586 DOI: 10.3390/polym12071603] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/15/2020] [Accepted: 07/16/2020] [Indexed: 12/17/2022] Open
Abstract
DNA folding is a core phenomenon in genome packaging within a nucleus. Such a phenomenon is induced by polyelectrolyte complexation between anionic DNA and cationic proteins of histones. In this regard, complexes formed between DNA and cationic polyelectrolytes have been investigated as models to gain insight into genome packaging. Upon complexation, DNA undergoes folding to reduce its occupied volume, which often results in multi-complex associated aggregates. However, when cationic copolymers comprising a polycation block and a neutral hydrophilic polymer block are used instead, DNA undergoes folding as a single molecule within a spontaneously formed polyplex micelle (PM), thereby allowing the observation of the higher-order structures that DNA forms. The DNA complex forms polymorphic structures, including globular, rod-shaped, and ring-shaped (toroidal) structures. This review focuses on the polymorphism of DNA, particularly, to elucidate when, how, and why DNA organizes into these structures with cationic copolymers. The interactions between DNA and the copolymers, and the specific nature of DNA in rigidity; i.e., rigid but foldable, play significant roles in the observed polymorphism. Moreover, PMs serve as potential gene vectors for systemic application. The significance of the controlled DNA folding for such an application is addressed briefly in the last part.
Collapse
Affiliation(s)
- Kensuke Osada
- Quantum Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology (QST), Anagawa, Inage-ku, Chiba-shi, Chiba 263-8555, Japan
| |
Collapse
|
18
|
Wu H, Ting JM, Tirrell MV. Mechanism of Dissociation Kinetics in Polyelectrolyte Complex Micelles. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b01814] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Hao Wu
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
| | - Jeffrey M. Ting
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
- Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Matthew V. Tirrell
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
- Argonne National Laboratory, Lemont, Illinois 60439, United States
| |
Collapse
|
19
|
Tockary TA, Foo W, Dirisala A, Chen Q, Uchida S, Osawa S, Mochida Y, Liu X, Kinoh H, Cabral H, Osada K, Kataoka K. Single-Stranded DNA-Packaged Polyplex Micelle as Adeno-Associated-Virus-Inspired Compact Vector to Systemically Target Stroma-Rich Pancreatic Cancer. ACS NANO 2019; 13:12732-12742. [PMID: 31647640 DOI: 10.1021/acsnano.9b04676] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Despite the rigidity of double-stranded DNA (dsDNA), its packaging is used to construct nonviral gene carriers due to its availability and the importance of its double-helix to elicit transcription. However, there is an increasing demand for more compact-sized carriers to facilitate tissue penetration, which may be easily fulfilled by using the more flexible single-stranded DNA (ssDNA) as an alternative template. Inspired by the adeno-associated virus (AAV) as a prime example of a transcriptionally active ssDNA system, we considered a methodology that can capture unpaired ssDNA within the polyplex micelle system (PM), an assembly of DNA and poly(ethylene glycol)-b-poly(l-lysine) (PEG-PLys). A micellar assembly retaining unpaired ssDNA was prepared by unpairing linearized pDNA with heat and performing polyion complexation on site with PEG-PLys. The PM thus formed had a compact and spherical shape, which was distinguishable from the rod-shaped PM formed from dsDNA, and still retained its ability to activate gene expression. Furthermore, we demonstrated that its capacity to encapsulate DNA was much higher than AAV, thereby potentially allowing the delivery of a larger variety of protein-encoding DNA. These features permit the ssDNA-loaded PM to easily penetrate the size-restricting stromal barrier after systemic application. Further, they can elicit gene expression in tumor cell nests of an intractable pancreatic cancer mouse model to achieve antitumor effects through suicide gene therapy. Thus, single-stranded DNA-packaged PM is appealing as a potential gene vector to tackle intractable diseases, particularly those with target delivery issues due to size-restriction barriers.
Collapse
Affiliation(s)
- Theofilus A Tockary
- Innovation Center of NanoMedicine (iCONM) , Kawasaki Institute of Industrial Promotion , Tonomachi 3-25-14 , Kawasaki 210-0821 , Japan
| | - Wanling Foo
- Department of Bioengineering, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-8656 , Japan
| | - Anjaneyulu Dirisala
- Innovation Center of NanoMedicine (iCONM) , Kawasaki Institute of Industrial Promotion , Tonomachi 3-25-14 , Kawasaki 210-0821 , Japan
| | - Qixian Chen
- School of Life Science and Biotechnology , Dalian University of Technology , 2 Linggong Road , Dalian , Liaoning 116023 , China
| | - Satoshi Uchida
- Innovation Center of NanoMedicine (iCONM) , Kawasaki Institute of Industrial Promotion , Tonomachi 3-25-14 , Kawasaki 210-0821 , Japan
- Department of Bioengineering, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-8656 , Japan
| | - Shigehito Osawa
- Department of Applied Chemistry, Faculty of Science , Tokyo University of Science , 1-3 Kagurazaka , Shinjuku-ku, Tokyo 162-8601 , Japan
| | - Yuki Mochida
- Innovation Center of NanoMedicine (iCONM) , Kawasaki Institute of Industrial Promotion , Tonomachi 3-25-14 , Kawasaki 210-0821 , Japan
| | - Xueying Liu
- Innovation Center of NanoMedicine (iCONM) , Kawasaki Institute of Industrial Promotion , Tonomachi 3-25-14 , Kawasaki 210-0821 , Japan
| | - Hiroaki Kinoh
- Innovation Center of NanoMedicine (iCONM) , Kawasaki Institute of Industrial Promotion , Tonomachi 3-25-14 , Kawasaki 210-0821 , Japan
| | - Horacio Cabral
- Department of Bioengineering, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-8656 , Japan
| | - Kensuke Osada
- Department of Bioengineering, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-8656 , Japan
- National Institutes for Quantum and Radiology Science and Technology , 4-9-1 Anagawa , Inage-ku, Chiba 263-8555 , Japan
| | - Kazunori Kataoka
- Innovation Center of NanoMedicine (iCONM) , Kawasaki Institute of Industrial Promotion , Tonomachi 3-25-14 , Kawasaki 210-0821 , Japan
- Institute for Future Initiatives , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-0033 , Japan
| |
Collapse
|
20
|
Wang D, Zhang X, Li H, Luan Y, Wei G, Wang J. Anticancer Properties of Lipidated Peptide Drug Supramolecular Self-Assemblies with Enhanced Stability. ACS APPLIED BIO MATERIALS 2019; 2:5995-6003. [PMID: 35021520 DOI: 10.1021/acsabm.9b00913] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Dong Wang
- State Key Laboratory of Heavy Oil Processing & Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, 266580, China
| | - Xuecheng Zhang
- State Key Laboratory of Heavy Oil Processing & Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, 266580, China
| | - Hui Li
- State Key Laboratory of Heavy Oil Processing & Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, 266580, China
| | - Yuxia Luan
- School of Pharmaceutical Science, Key Laboratory of Chemical Biology (Ministry of Education), Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, China
| | - Guangcheng Wei
- Department of Pharmacy Science, Binzhou Medical University, Yantai 264000, China
| | - Jiqian Wang
- State Key Laboratory of Heavy Oil Processing & Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, 266580, China
| |
Collapse
|
21
|
Fehér B, Zhu K, Nyström B, Varga I, Pedersen JS. Effect of Temperature and Ionic Strength on Micellar Aggregates of Oppositely Charged Thermoresponsive Block Copolymer Polyelectrolytes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:13614-13623. [PMID: 31577150 DOI: 10.1021/acs.langmuir.9b01896] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The self-assembly of two oppositely charged diblock copolymers that have a common thermosensitive nonionic block of poly(N-isopropylacrylamide) (pNIPAAM) has been investigated. The effect of the mixing ratio and total polymer concentrations on the self-assembly of the components and on the phase stability of the mixtures was studied by dynamic light scattering, electrophoretic mobility, and turbidimetry measurements in water at 20 °C. The effect of the competing electrostatic and hydrophobic interactions on the nanostructure of negatively charged electrostatically self-assembled micelles bearing a pNIPAAM corona was investigated by small-angle X-ray scattering (SAXS). The electrostatic and hydrophobic interactions were controlled independently by tuning the ionic strength (from pure water to 50 mM NaCl) and the temperature (20-50 °C) of the investigated mixtures. The SAXS data could be fitted by a spherical micelle model, which has a smoothly decaying radial profile and a Gaussian star term that describes the internal structure of the micellar structures and possible attractive interactions between the polymer chains. At high temperature, a cluster structure factor was included for describing the formation of bulky clusters of the formed micelles. At low temperature and ionic strength, the formation of micelles with a coacervate core and hydrated pNIPAAM shell was observed. The structural evolution of the self-assembled micelles with increasing ionic strength and temperature could be followed, and finally at high ionic strength and temperature, the formation of inverted micelles with a hydrophobic core and polyelectrolyte shell could be identified.
Collapse
Affiliation(s)
- Bence Fehér
- Institute of Chemistry , ELTE , Pázmány Péter sétány 1/A , Budapest 1117 , Hungary
- Department of Chemistry and Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus C , Denmark
| | - Kaizheng Zhu
- Department of Chemistry , University of Oslo , P.O. Box 1033, Blindern , N-0315 Oslo , Norway
| | - Bo Nyström
- Department of Chemistry , University of Oslo , P.O. Box 1033, Blindern , N-0315 Oslo , Norway
| | - Imre Varga
- Institute of Chemistry , ELTE , Pázmány Péter sétány 1/A , Budapest 1117 , Hungary
| | - Jan Skov Pedersen
- Department of Chemistry and Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus C , Denmark
| |
Collapse
|
22
|
Encapsulation of tissue plasminogen activator in pH-sensitive self-assembled antioxidant nanoparticles for ischemic stroke treatment – Synergistic effect of thrombolysis and antioxidant –. Biomaterials 2019; 215:119209. [DOI: 10.1016/j.biomaterials.2019.05.020] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 05/07/2019] [Accepted: 05/10/2019] [Indexed: 12/18/2022]
|
23
|
Werten MWT, Eggink G, Cohen Stuart MA, de Wolf FA. Production of protein-based polymers in Pichia pastoris. Biotechnol Adv 2019; 37:642-666. [PMID: 30902728 PMCID: PMC6624476 DOI: 10.1016/j.biotechadv.2019.03.012] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 02/03/2019] [Accepted: 03/17/2019] [Indexed: 01/09/2023]
Abstract
Materials science and genetic engineering have joined forces over the last three decades in the development of so-called protein-based polymers. These are proteins, typically with repetitive amino acid sequences, that have such physical properties that they can be used as functional materials. Well-known natural examples are collagen, silk, and elastin, but also artificial sequences have been devised. These proteins can be produced in a suitable host via recombinant DNA technology, and it is this inherent control over monomer sequence and molecular size that renders this class of polymers of particular interest to the fields of nanomaterials and biomedical research. Traditionally, Escherichia coli has been the main workhorse for the production of these polymers, but the methylotrophic yeast Pichia pastoris is finding increased use in view of the often high yields and potential bioprocessing benefits. We here provide an overview of protein-based polymers produced in P. pastoris. We summarize their physicochemical properties, briefly note possible applications, and detail their biosynthesis. Some challenges that may be faced when using P. pastoris for polymer production are identified: (i) low yields and poor process control in shake flask cultures; i.e., the need for bioreactors, (ii) proteolytic degradation, and (iii) self-assembly in vivo. Strategies to overcome these challenges are discussed, which we anticipate will be of interest also to readers involved in protein expression in P. pastoris in general.
Collapse
Affiliation(s)
- Marc W T Werten
- Wageningen Food & Biobased Research, NL-6708 WG Wageningen, The Netherlands.
| | - Gerrit Eggink
- Wageningen Food & Biobased Research, NL-6708 WG Wageningen, The Netherlands; Bioprocess Engineering, Wageningen University & Research, NL-6708 PB Wageningen, The Netherlands
| | - Martien A Cohen Stuart
- Physical Chemistry and Soft Matter, Wageningen University & Research, NL-6708 WE Wageningen, The Netherlands
| | - Frits A de Wolf
- Wageningen Food & Biobased Research, NL-6708 WG Wageningen, The Netherlands
| |
Collapse
|
24
|
Sethuraman V, McGovern M, Morse DC, Dorfman KD. Influence of charge sequence on the adsorption of polyelectrolytes to oppositely-charged polyelectrolyte brushes. SOFT MATTER 2019; 15:5431-5442. [PMID: 31209453 DOI: 10.1039/c9sm00581a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
When a solution of polyanionic chains is placed in contact with a polycationic brush, the polyanions adsorb into the brush. We investigate the influence of the charge sequences of the free and bound species on the thermodynamics of polyelectrolyte adsorption. As model systems, we consider free and brush polyelectrolytes with either block or alternating charge sequences, and study the adsorption process using coarse-grained Langevin dynamics with implicit solvent, explicit counterions, and excess salt. Free energy, internal energy, and entropy of adsorption are computed using umbrella sampling methods. When the number of polyanions exceed the number of polycations, the brush becomes overcharged. Free chains adsorb most strongly when both free and tethered chains have a block charge sequence, and most weakly when both species have an alternating sequence. Adsorption is stronger when the free polyanion has a block sequence and the tethered polycation is alternating than in the reverse case of an alternating free polymer and a tethered block copolymer. Sequence-dependent effects are shown to be largely energetic, rather than entropic, in origin.
Collapse
Affiliation(s)
- Vaidyanathan Sethuraman
- Department of Chemical Engineering and Materials Science, University of Minnesota - Twin Cities, 421 Washington Ave. SE, Minneapolis, MN 55455, USA.
| | - Michael McGovern
- Department of Chemical Engineering and Materials Science, University of Minnesota - Twin Cities, 421 Washington Ave. SE, Minneapolis, MN 55455, USA.
| | - David C Morse
- Department of Chemical Engineering and Materials Science, University of Minnesota - Twin Cities, 421 Washington Ave. SE, Minneapolis, MN 55455, USA.
| | - Kevin D Dorfman
- Department of Chemical Engineering and Materials Science, University of Minnesota - Twin Cities, 421 Washington Ave. SE, Minneapolis, MN 55455, USA.
| |
Collapse
|
25
|
The Impact of Nylon-3 Copolymer Composition on the Efficiency of siRNA Delivery to Glioblastoma Cells. NANOMATERIALS 2019; 9:nano9070986. [PMID: 31288448 PMCID: PMC6669510 DOI: 10.3390/nano9070986] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 06/28/2019] [Accepted: 07/01/2019] [Indexed: 02/06/2023]
Abstract
Glioblastoma multiforme is a devastating disease that has attracted enormous attention due to poor prognosis and high recurrence. Small interfering RNA (siRNA) in principle offers a promising therapeutic approach by the downregulation of disease-related genes via RNA interference. For efficient siRNA delivery to target sites, cationic polymers are often used in preclinical studies for the protection of siRNA and complex formation based on electrostatic interactions. In an effort to develop biocompatible and efficient nanocarriers with a translational outlook for optimal gene silencing at reduced toxicity, we synthesized two sets of nylon-3 copolymers with variable cationic content (DM or NM monomer) and hydrophobic subunits (CP monomer) and evaluated their suitability for in vitro siRNA delivery into glioblastoma cells. DM0.4/CP0.6 and NM0.4/CP0.6 polymers with similar subunit ratios were synthesized to compare the effect of different cationic subunits. Additionally, we utilized NM0.2/CP0.8 polymers to evaluate the impact of the different hydrophobic content in the polymer chain. The siRNA condensation ability and polymer–siRNA complex stability was evaluated by unmodified and modified SYBR gold assays, respectively. Further physicochemical characteristics, e.g., particle size and surface charge, were evaluated by dynamic light scattering and laser Doppler anemometry, whereas a relatively new method for polyplex size distribution analysis—tunable resistive pulse sensing—was additionally developed and compared to DLS measurements. Transfection efficiencies, the route of cell internalization, and protein knockdown abilities in glioblastoma cells were investigated by flow cytometry. Furthermore, cellular tolerability was evaluated by MTT and LDH assays. All the polymers efficiently condensed siRNA at N/P ratios of three, whereas polymers with NM cationic subunits demonstrated smaller particle size and lower polyplex stability. Furthermore, NM0.2/CP0.8 polyplexes with the highest hydrophobic content displayed significantly higher cellular internalization in comparison to more cationic formulations and successful knockdown capabilities. Detailed investigations of the cellular uptake route demonstrated that these polyplexes mainly follow clathrin-mediated endocytotic uptake mechanisms, implying high interaction capacity with cellular membranes. Taken together with conducive toxicity profiles, highly hydrophobic nylon-3 polymers provide an appropriate siRNA delivery agent for the potential treatment of glioblastoma.
Collapse
|
26
|
Shah S, Leon L. Structural transitions and encapsulation selectivity of thermoresponsive polyelectrolyte complex micelles. J Mater Chem B 2019; 7:6438-6448. [DOI: 10.1039/c9tb01194c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Polyelectrolyte complex micelles containing thermoresponsive coronas can exhibit varying morphologies and encapsulate multivalently charged therapeutics for drug delivery applications.
Collapse
Affiliation(s)
- Sachit Shah
- Department of Materials Science and Engineering
- University of Central Florida
- Orlando
- USA
| | - Lorraine Leon
- Department of Materials Science and Engineering
- University of Central Florida
- Orlando
- USA
- NanoScience Technology Center
| |
Collapse
|
27
|
Murmiliuk A, Matějíček P, Filippov SK, Janata M, Šlouf M, Pispas S, Štěpánek M. Formation of core/corona nanoparticles with interpolyelectrolyte complex cores in aqueous solution: insight into chain dynamics in the complex from fluorescence quenching. SOFT MATTER 2018; 14:7578-7585. [PMID: 30140809 DOI: 10.1039/c8sm01174e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Formation of interpolyelectrolyte complexes (IPECs) of poly(methacrylic acid) (PMAA) bearing a fluorescent label (umbelliferone) at the chain end and poly[3,5-bis(trimethyl ammoniummethyl)-4-hydroxystyrene iodide]-block-poly(ethylene oxide) (QNPHOS-PEO) acting as a fluorescence quencher, was followed using a combination of scattering, calorimetry, microscopy and fluorescence spectroscopy techniques. While scattering and microscopy measurements indicated formation of spherical core/corona nanoparticles with the core of the QNPHOS/PMAA complex and the PEO corona, fluorescence measurements showed that both static and dynamic quenching efficiency were increased in the nanoparticle stability region. As the dynamic quenching rate constant remained unchanged, the quenching enhancement was caused by the increase in the local concentration of QNPHOS segments in the microenvironment of the label. This finding implies that the local dynamics of PMAA end chains affecting the interaction of the label with QNPHOS segments was independent of both PMAA and QNPHOS chain conformations.
Collapse
Affiliation(s)
- Anastasiia Murmiliuk
- Department of Physical and Macromolecular Chemistry, Charles University, Hlavova 8, 128 00 Prague 2, Czech Republic Prague, Czech Republic.
| | | | | | | | | | | | | |
Collapse
|
28
|
Wang L, Li Z, Huang P, He Z, Ding W. Synthesis of a double-hydrophilic star-block copolymer by aqueous SET-LRP and its dual-stimuli responses. Colloid Polym Sci 2018. [DOI: 10.1007/s00396-018-4398-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
29
|
Wang L, Li Q. Photochromism into nanosystems: towards lighting up the future nanoworld. Chem Soc Rev 2018; 47:1044-1097. [PMID: 29251304 DOI: 10.1039/c7cs00630f] [Citation(s) in RCA: 331] [Impact Index Per Article: 55.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The ability to manipulate the structure and function of promising nanosystems via energy input and external stimuli is emerging as an attractive paradigm for developing reconfigurable and programmable nanomaterials and multifunctional devices. Light stimulus manifestly represents a preferred external physical and chemical tool for in situ remote command of the functional attributes of nanomaterials and nanosystems due to its unique advantages of high spatial and temporal resolution and digital controllability. Photochromic moieties are known to undergo reversible photochemical transformations between different states with distinct properties, which have been extensively introduced into various functional nanosystems such as nanomachines, nanoparticles, nanoelectronics, supramolecular nanoassemblies, and biological nanosystems. The integration of photochromism into these nanosystems has endowed the resultant nanostructures or advanced materials with intriguing photoresponsive behaviors and more sophisticated functions. In this Review, we provide an account of the recent advancements in reversible photocontrol of the structures and functions of photochromic nanosystems and their applications. The important design concepts of such truly advanced materials are discussed, their fabrication methods are emphasized, and their applications are highlighted. The Review is concluded by briefly outlining the challenges that need to be addressed and the opportunities that can be tapped into. We hope that the review of the flourishing and vibrant topic with myriad possibilities would shine light on exploring the future nanoworld by encouraging and opening the windows to meaningful multidisciplinary cooperation of engineers from different backgrounds and scientists from the fields such as chemistry, physics, engineering, biology, nanotechnology and materials science.
Collapse
Affiliation(s)
- Ling Wang
- Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, Kent, Ohio 44242, USA.
| | | |
Collapse
|
30
|
Parsons KH, Mondal MH, McCormick CL, Flynt AS. Guanidinium-Functionalized Interpolyelectrolyte Complexes Enabling RNAi in Resistant Insect Pests. Biomacromolecules 2018; 19:1111-1117. [PMID: 29446934 PMCID: PMC5894059 DOI: 10.1021/acs.biomac.7b01717] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
RNAi-based technologies are ideal for pest control as they can provide species specificity and spare nontarget organisms. However, in some pests biological barriers prevent use of RNAi, and therefore broad application. In this study we tested the ability of a synthetic cationic polymer, poly-[ N-(3-guanidinopropyl)methacrylamide] (pGPMA), that mimics arginine-rich cell penetrating peptides to trigger RNAi in an insensitive animal- Spodoptera frugiperda. Polymer-dsRNA interpolyelectrolyte complexes (IPECs) were found to be efficiently taken up by cells, and to drive highly efficient gene knockdown. These IPECs could also trigger target gene knockdown and moderate larval mortality when fed to S. frugiperda larvae. This effect was sequence specific, which is consistent with the low toxicity we found to be associated with this polymer. A method for oral delivery of dsRNA is critical to development of RNAi-based insecticides. Thus, this technology has the potential to make RNAi-based pest control useful for targeting numerous species and facilitate use of RNAi in pest management practices.
Collapse
Affiliation(s)
- Keith H Parsons
- Department of Polymer Science and Engineering , The University of Southern Mississippi , Hattiesburg , Mississippi 39406 , United States
| | - Mosharrof H Mondal
- Department of Biological Sciences , The University of Southern Mississippi , Hattiesburg , Mississippi 39406 , United States
| | - Charles L McCormick
- Department of Polymer Science and Engineering , The University of Southern Mississippi , Hattiesburg , Mississippi 39406 , United States.,Department of Chemistry and Biochemistry , The University of Southern Mississippi , Hattiesburg , Mississippi 39406 , United States
| | - Alex S Flynt
- Department of Biological Sciences , The University of Southern Mississippi , Hattiesburg , Mississippi 39406 , United States
| |
Collapse
|
31
|
Yoshinaga N, Ishii T, Naito M, Endo T, Uchida S, Cabral H, Osada K, Kataoka K. Polyplex Micelles with Phenylboronate/Gluconamide Cross-Linking in the Core Exerting Promoted Gene Transfection through Spatiotemporal Responsivity to Intracellular pH and ATP Concentration. J Am Chem Soc 2017; 139:18567-18575. [PMID: 29188718 DOI: 10.1021/jacs.7b08816] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Polyplexes as gene delivery carriers require integrated functionalities to modulate intracellular trafficking for efficient gene transfection. Herein, we developed plasmid DNA (pDNA)-loaded polyplex micelles (PMs) from poly(ethylene glycol)-based block catiomers derivatized with 4-carboxy-3-fluorophenylboronic acid (FPBA) and d-gluconamide to form pH- and ATP-responsive cross-linking in the core. These PMs exhibited robustness in the extracellular milieu and smooth endosomal escape after cellular uptake, and they facilitated pDNA decondensation triggered by increased ATP concentration inside of the cell. Laser confocal microscopic observation revealed that FPBA installation enhanced the endosomal escapability of the PMs; presumably, this effect resulted from the facilitated endo-/lysosomal membrane disruption triggered by the released block catiomers with hydrophobic FPBA moieties in the side chain from the PM at lower pH condition of endo-/lysosomes. Furthermore, the profile of intracellular pDNA decondensation from the PMs was monitored using Förster resonance energy transfer measurement by flow cytometry; these observations confirmed that PMs optimized for ATP-responsivity exerted effective intracellular decondensation of loaded pDNA to attain promoted gene transfection.
Collapse
Affiliation(s)
- Naoto Yoshinaga
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takehiko Ishii
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Mitsuru Naito
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Taisuke Endo
- Department of Material Engineering, Graduate School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Satoshi Uchida
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Horacio Cabral
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kensuke Osada
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kazunori Kataoka
- Innovation Center of NanoMedicine (iCONM), Kawasaki Institute of Industrial Promotion , 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki, 210-0821, Japan.,Policy Alternatives Research Institute, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| |
Collapse
|
32
|
Wong SY, Putnam D. The stochastic effect of polydispersity on polymeric DNA delivery vectors. J Appl Polym Sci 2017. [DOI: 10.1002/app.45965] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sharon Y. Wong
- Meinig School of Biomedical EngineeringCornell UniversityIthaca New York 14853
| | - David Putnam
- Meinig School of Biomedical EngineeringCornell UniversityIthaca New York 14853
- Smith School of Chemical and Biomolecular EngineeringCornell UniversityIthaca New York 14853
| |
Collapse
|
33
|
Kaczmarek D, Diget JS, Nyström B, Gyulai G, Mészáros R, Gilányi T, Varga I. Response of block copolyelectrolyte complexes to addition of ionic surfactants. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.04.078] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
34
|
Salmanpour M, Tamaddon A, Yousefi G, Mohammadi-Samani S. "Grafting-from" synthesis and characterization of poly (2-ethyl-2-oxazoline)- b-poly (benzyl L-glutamate) micellar nanoparticles for potential biomedical applications. BIOIMPACTS : BI 2017; 7:155-166. [PMID: 29159143 PMCID: PMC5684507 DOI: 10.15171/bi.2017.19] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 08/26/2017] [Accepted: 08/28/2017] [Indexed: 12/20/2022]
Abstract
Introduction: Recent advances in the field of poly (2-oxazolines) as bio-inspired synthetic pseudopeptides have proven their potential biomedical applications such as drug delivery and tissue engineering. Methods: In order to fabricate a biodegradable micellar nanoparticle of poly (2-ethyl 2-oxazoline)-b-poly (benzyl L-glutamate) or pEOx-b-pBLG, "grafting-from" synthesis approach was used involving consecutive steps of cationic ring-opening polymerization of 2-ethyl-2-oxazoline, amine functionalization of pEOx using 1-Boc-piperazine and N-carboxyanhydride polymerization of γ-benzyl- L-glutamate. Following hydrolysis of the copolymer, the protecting γ-benzyl groups were removed yielding a double-hydrophilic block ionomer of pEOx-b-poly (L-glutamic acid). The polymers were characterized by FTIR, 1H-NMR, size exclusion chromatography and differential scanning calorimetry (DSC). Aqueous assembly of the polymers was investigated by pyrene assay, dynamic light scattering, and transmission electron microscopy. MTT cytotoxicity assay was also performed to determine the cytocompatibility in various tumor cell lines. Results: The polymeric micelles presented a uni-modal size distribution with mean hydrodynamic diameter of 149.8 ± 10.6 nm and critical aggregation concentration of 60 µg/mL. The average molecular weight of pEOx increased from ~ 14 to 20 kDa for pEOx-b-poly (L-glutamic acid) as determined by light scattering (Debye plot), indicating a successful copolymerization. MTT assay showed little to no practical cytotoxicity at concentrations below 1 mg/mL. Conclusion: Multi-step synthesis of pEOx-b-pBLG and subsequent alkaline hydrolysis were performed to obtain the block ionomer pEOx-b-poly (L-glutamic acid). Both pEOx-based copolymers can be considered for various potential applications such as loading and delivery of drugs, genes, and contrast agents either by chemical conjugation or physical loading.
Collapse
Affiliation(s)
- Mohsen Salmanpour
- Department of Pharmaceutics, Shiraz School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Tamaddon
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Gholamhossein Yousefi
- Department of Pharmaceutics, Shiraz School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Soliman Mohammadi-Samani
- Department of Pharmaceutics, Shiraz School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz, Iran
| |
Collapse
|
35
|
Lysenko EA, Bilan RS, Chelushkin PS. Block-copolymer micelles with a interpolyelectrolyte crown. POLYMER SCIENCE SERIES C 2017. [DOI: 10.1134/s1811238217010076] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
36
|
Bayati S, Bergquist KE, Zhu K, Nyström B, Skov Pedersen J, Galantini L, Schillén K. Mixed micelles of oppositely charged poly(N-isopropylacrylamide) diblock copolymers. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/polb.24403] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Solmaz Bayati
- Division of Physical Chemistry, Department of Chemistry; Lund University; P.O. Box 124 SE-221 00 Lund Sweden
| | - Karl-Erik Bergquist
- Center for Analysis and Synthesis; Department of Chemistry, Lund University; P.O. Box 124 SE-221 00 Lund Sweden
| | - Kaizheng Zhu
- Department of Chemistry; University of Oslo; Postboks 1033 0315 Blindern Oslo Norway
| | - Bo Nyström
- Department of Chemistry; University of Oslo; Postboks 1033 0315 Blindern Oslo Norway
| | - Jan Skov Pedersen
- Department of Chemistry and Interdisciplinary Nanoscience Center (iNANO); Aarhus University; Gustav Wieds Vej 14 8000 Aarhus C Denmark
| | - Luciano Galantini
- Department of Chemistry; “La Sapienza” University of Rome; P. le A. Moro 5 00185 Rome Italy
| | - Karin Schillén
- Division of Physical Chemistry, Department of Chemistry; Lund University; P.O. Box 124 SE-221 00 Lund Sweden
| |
Collapse
|
37
|
Walta S, Pergushov DV, Oppermann A, Steinschulte AA, Geisel K, Sigolaeva LV, Plamper FA, Wöll D, Richtering W. Microgels enable capacious uptake and controlled release of architecturally complex macromolecular species. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.05.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
38
|
Takeda KM, Osada K, Tockary TA, Dirisala A, Chen Q, Kataoka K. Poly(ethylene glycol) Crowding as Critical Factor To Determine pDNA Packaging Scheme into Polyplex Micelles for Enhanced Gene Expression. Biomacromolecules 2016; 18:36-43. [DOI: 10.1021/acs.biomac.6b01247] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
| | - Kensuke Osada
- Japan
Science and Technology Agency, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
- Innovation
Center of NanoMedicine, Institute of Industrial Promotion - KAWASAKI, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki 210-0821, Japan
| | - Theofilus A. Tockary
- Innovation
Center of NanoMedicine, Institute of Industrial Promotion - KAWASAKI, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki 210-0821, Japan
| | - Anjaneyulu Dirisala
- Innovation
Center of NanoMedicine, Institute of Industrial Promotion - KAWASAKI, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki 210-0821, Japan
| | | | - Kazunori Kataoka
- Innovation
Center of NanoMedicine, Institute of Industrial Promotion - KAWASAKI, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki 210-0821, Japan
| |
Collapse
|
39
|
Rimer JD, Kolbach-Mandel AM, Ward MD, Wesson JA. The role of macromolecules in the formation of kidney stones. Urolithiasis 2016; 45:57-74. [PMID: 27913854 DOI: 10.1007/s00240-016-0948-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 11/22/2016] [Indexed: 10/20/2022]
Abstract
The formation of crystal aggregates, one of the critical processes in kidney stone pathogenesis, involves interactions between crystals (predominantly calcium oxalate monohydrate, COM) and urinary constituents (e.g., proteins), which serve as an adhesive "glue" between crystals in stones. To develop a better understanding of the protein-crystal interactions that lead to crystal aggregation, we have measured the effect of model proteins on bulk COM crystal properties as well as their adsorption on crystal surfaces using three synthetic polyanions: poly(aspartic acid) (polyD), poly(glutamic acid) (polyE), and poly(acrylic acid) (polyAA). These anionic macromolecules reduced the amount of COM crystal aggregation in bulk solution to an extent similar to that observed for mixture of proteins from normal urine, with little difference between the polymers. In contrast, the polymers exhibited differences in measures of COM crystal growth. Polycations such as poly(arginine) (polyR) and poly(lysine) (polyK) reduced aggregation weakly and exerted negligible effects on crystal growth. All polyions were found to associate with COM crystal surfaces, as evidenced by changes in the zeta potential of COM crystals in electrophoretic mobility measurements. On the other hand, COM aggregation and possibly growth can be promoted by many binary mixtures of polycations and polyanions, which appeared to be mediated by polymer aggregate formation rather than loss of crystal charge stabilization. Similarly, crystal aggregation promotion behavior can be driven by forming aggregates of weakly charged polyanions, like Tamm-Horsfall protein, suggesting that polymer (protein) aggregation may play a critical role in stone formation. Sensitivity of polyanion-COM crystal surface interactions to the chemical composition of polymer side groups were demonstrated by large differences in crystal aggregation behavior between polyD and polyE, which correlated with atomic force microscopy (AFM) measurements of growth inhibition on various COM surfaces and chemical force microscopy (CFM) measurements of unbinding forces between COM crystal surfaces and AFM tips decorated with either carboxylate or amidinium moieties (mimicking polyanion and polyR side chains, respectively). The lack of strong interaction for polyE at the COM (100) surface compared to polyD appeared to be the critical difference. Finally, the simultaneous presence of polyanions and polycations appeared to alter the ability of polycations to mediate unbinding forces in CFM and promote crystal growth. In summary, polyanions strongly associated with COM surfaces and influenced crystallization, while polycations did not, though important differences were observed based on the physicochemical properties of polyanions. Observations suggest that COM aggregation with both polyanion-polycation mixtures and weakly charged polyanions is promoted by polymer aggregate formation, which plays a critical role in bridging crystal surfaces.
Collapse
Affiliation(s)
- Jeffrey D Rimer
- Department of Chemical and Biomolecular Engineering, University of Houston, 4726 Calhoun Rd, Houston, TX, 77204-4004, USA
| | - Ann M Kolbach-Mandel
- Department of Medicine/Nephrology Division, The Medical College of Wisconsin, 9200 West Wisconsin Avenue, Milwaukee, WI, 53226, USA
| | - Michael D Ward
- Department of Chemistry and the Molecular Design Institute, New York University, 100 Washington Square East, New York, NY, 10003-6688, USA
| | - Jeffrey A Wesson
- Department of Medicine/Nephrology Division, Department of Veterans Affairs Medical Center, The Medical College of Wisconsin, 5000 West National Avenue, Milwaukee, WI, 53295, USA.
| |
Collapse
|
40
|
Procházka K, Šindelka K, Wang X, Limpouchová Z, Lísal M. Self-assembly and co-assembly of block polyelectrolytes in aqueous solutions. Dissipative particle dynamics with explicit electrostatics. Mol Phys 2016. [DOI: 10.1080/00268976.2016.1225130] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Karel Procházka
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Prague, Czech Republic
| | - Karel Šindelka
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Prague, Czech Republic
| | - Xiu Wang
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Prague, Czech Republic
| | - Zuzana Limpouchová
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Prague, Czech Republic
| | - Martin Lísal
- Laboratory of Chemistry and Physics of Aerosols, Institute of Chemical Process Fundamentals of the CAS, Prague, Czech Republic
- Department of Physics, Faculty of Science, J. E. Purkinje University, Ústí n.L., Czech Republic
| |
Collapse
|
41
|
Arif M, Raja MA, Zeenat S, Chi Z, Liu C. Preparation and characterization of polyelectrolyte complex nanoparticles based on poly (malic acid), chitosan. A pH-dependent delivery system. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2016; 28:50-62. [PMID: 27691398 DOI: 10.1080/09205063.2016.1242460] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The main objective of this work was to develop polyelectrolyte complex (PEC) nanoparticles based on poly (malic acid), chitosan (PMLA/CS) as pH-dependent delivery systems. The results indicated that the PMLA/CS Nps were successfully prepared. The prepared PMLA/CS Nps showed spherical morphology with a mean diameter of 212.81 nm and negative surface charge of -24.60 mV, and revealing significant pH-sensitive properties as the mass ratio of PMLA to CS was 5:5. The prepared PMLA/CS Nps were characterized by FT-IR, TEM and DLS. The prepared PMLA/CS Nps remained stable over a temperature range of 4-53 °C. Doxorubicin (Dox) as a model drug was loaded on the nanoparticles through the physical adsorption method. The high drug loading efficiency (16.9%) and the sustained release patterns in acidic media were observed, and the release accelerated in alkaline solutions. MTT based cytotoxic analysis also depicted the non-toxic nature of PMLA/CS Nps, while Dox-PMLA/CS Nps showed dose-dependent cytotoxicity towards MDA-MB-231 cells. Hence, the nanoparticles could be potentially applied as pH sensitive drug vehicles for controlled release.
Collapse
Affiliation(s)
- Muhammad Arif
- a College of Marine Life Science, Ocean University of China , Qingdao , P.R. China
| | - Mazhar Ali Raja
- a College of Marine Life Science, Ocean University of China , Qingdao , P.R. China
| | - Shah Zeenat
- a College of Marine Life Science, Ocean University of China , Qingdao , P.R. China
| | - Zhe Chi
- a College of Marine Life Science, Ocean University of China , Qingdao , P.R. China
| | - Chenguang Liu
- a College of Marine Life Science, Ocean University of China , Qingdao , P.R. China
| |
Collapse
|
42
|
Wang G, Zhang L. Synthesis, self-assembly and pH sensitivity of PDEAEMA–PEG–PDEAEMA triblock copolymer micelles for drug delivery. REACT FUNCT POLYM 2016. [DOI: 10.1016/j.reactfunctpolym.2016.08.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
43
|
Parsons KH, Holley AC, Munn GA, Flynt AS, McCormick CL. Block ionomer complexes consisting of siRNA and aRAFT-synthesized hydrophilic- block-cationic copolymers II: The influence of cationic block charge density on gene suppression. Polym Chem 2016; 7:6044-6054. [PMID: 28239425 DOI: 10.1039/c6py01048b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Block ionomer complex (BIC)-siRNA interactions and effectiveness in cell transfection are reported. Aqueous RAFT polymerization was used to prepare a series of hydrophilic-block-cationic copolymers in which the cationic block statistically incorporates increasing amounts of neutral, hydrophilic monomer such that the number of cationic groups remains unchanged but the cationic charge density is diluted along the polymer backbone. Reduced charge density decreases the electrostatic binding strength between copolymers and siRNA with the goal of improving siRNA release after targeted cellular delivery. However, lower binding strength resulted in decreased transfection and RNA interference pathway activation, leading to reduced gene knockdown. Enzymatic siRNA degradation studies with BICs indicated lowered binding strength increases susceptibility to RNases, which is the likely cause for poor gene knockdown.
Collapse
Affiliation(s)
- Keith H Parsons
- Department of Polymer Science and Engineering, The University of Southern, Mississippi, Hattiesburg, MS 39406, USA
| | - Andrew C Holley
- Department of Polymer Science and Engineering, The University of Southern, Mississippi, Hattiesburg, MS 39406, USA
| | - Gabrielle A Munn
- Department of Polymer Science and Engineering, The University of Southern, Mississippi, Hattiesburg, MS 39406, USA
| | - Alex S Flynt
- Department of Biological Sciences, The University of Southern Mississippi, Hattiesburg, MS 39406, USA
| | - Charles L McCormick
- Department of Polymer Science and Engineering, The University of Southern, Mississippi, Hattiesburg, MS 39406, USA; Department of Chemistry and Biochemistry, The University of Southern Mississippi, Hattiesburg, MS 39406, USA
| |
Collapse
|
44
|
Abstract
Research in the field of nonviral gene delivery is in the initial stages relative to the more commonly known viral systems. However, nonviral systems may, in the near future overcome some of the problems inherent to currently employed viral gene delivery systems. These problems range from limited payload capacity and general production issues to immune and toxic reactions, as well as the potential for catastrophic viral recombination. Self-assembling complexes of nucleic acids and synthetic polymers, commonly referred to as `polyplexes', are formed as the result of electrostatic interactions between the negatively charged phosphate groups of the DNA and the positively charged groups of the polycation. A wide array of polycations are available for such studies, including those with linear, branched, dendritic and block or graft copolymer architectures. These polycations vary greatly in chemical composition as well as the number of repeating units, providing for a wide range of different polyplexes that can be easily assembled. Some of the current gene delivery systems are described which serve as potential reagents in the field of polymer-based gene delivery.
Collapse
Affiliation(s)
- Catherine L. Gebhart
- Department of Pharmaceutical Sciences College of Pharmacy University of Nebraska Medical Center 986025, Nebraska Medical Center Omaha, NE 68198-6025, USA
| | - Alexander V. Kabanov
- Department of Pharmaceutical Sciences College of Pharmacy University of Nebraska Medical Center 986025, Nebraska Medical Center Omaha, NE 68198-6025, USA
| |
Collapse
|
45
|
Curcumin and Osteosarcoma: Can Invertible Polymeric Micelles Help? MATERIALS 2016; 9:ma9070520. [PMID: 28773642 PMCID: PMC5456898 DOI: 10.3390/ma9070520] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 06/21/2016] [Accepted: 06/23/2016] [Indexed: 12/16/2022]
Abstract
Systematic review of experimental and clinical data on the use of curcumin in the treatment of osteosarcoma is presented. The current status of curcumin's therapeutic potential against bone cancer is analyzed in regard to using polymeric micelles (including recently developed invertible, responsive, micelles) as a platform for curcumin delivery to treat osteosarcoma. The potential of micellar assemblies from responsive macromolecules in a controlled delivery of curcumin to osteosarcoma cells, and the release using a new inversion mechanism is revealed.
Collapse
|
46
|
Schmid AJ, Dubbert J, Rudov AA, Pedersen JS, Lindner P, Karg M, Potemkin II, Richtering W. Multi-Shell Hollow Nanogels with Responsive Shell Permeability. Sci Rep 2016; 6:22736. [PMID: 26984478 PMCID: PMC4794761 DOI: 10.1038/srep22736] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 02/18/2016] [Indexed: 12/23/2022] Open
Abstract
We report on hollow shell-shell nanogels with two polymer shells that have different volume phase transition temperatures. By means of small angle neutron scattering (SANS) employing contrast variation and molecular dynamics (MD) simulations we show that hollow shell-shell nanocontainers are ideal systems for controlled drug delivery: The temperature responsive swelling of the inner shell controls the uptake and release, while the thermoresponsive swelling of the outer shell controls the size of the void and the colloidal stability. At temperatures between 32 °C < T < 42 °C, the hollow nanocontainers provide a significant void, which is even larger than the initial core size of the template, and they possess a high colloidal stability due to the steric stabilization of the swollen outer shell. Computer simulations showed, that temperature induced switching of the permeability of the inner shell allows for the encapsulation in and release of molecules from the cavity.
Collapse
Affiliation(s)
- Andreas J Schmid
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
| | - Janine Dubbert
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
| | - Andrey A Rudov
- Physics Department, Lomonosov Moscow State University, 119991 Moscow, Russian Federation.,DWI-Leibnitz Institute for Interactive Materials e.V., 52056 Aachen, Germany
| | - Jan Skov Pedersen
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, 8000 Aarhus, Denmark
| | - Peter Lindner
- Institut Laue Langevin (ILL), 71 avenue des Martyrs, 38000 Grenoble, France
| | - Matthias Karg
- Physical Chemistry I, University of Bayreuth, 85440 Bayreuth, Germany
| | - Igor I Potemkin
- Physics Department, Lomonosov Moscow State University, 119991 Moscow, Russian Federation.,DWI-Leibnitz Institute for Interactive Materials e.V., 52056 Aachen, Germany
| | - Walter Richtering
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
| |
Collapse
|
47
|
Tockary TA, Osada K, Motoda Y, Hiki S, Chen Q, Takeda KM, Dirisala A, Osawa S, Kataoka K. Rod-to-Globule Transition of pDNA/PEG-Poly(l-Lysine) Polyplex Micelles Induced by a Collapsed Balance Between DNA Rigidity and PEG Crowdedness. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:1193-1200. [PMID: 26426541 DOI: 10.1002/smll.201501815] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 08/07/2015] [Indexed: 06/05/2023]
Abstract
The role of poly(ethylene-glycol) (PEG) in rod-shaped polyplex micelle structures, having a characteristic core of folded plasmid DNA (pDNA) and a shell of tethered PEG chains, is investigated using PEG-detachable polyplex micelles. Rod shapes undergo change to compacted globule shapes by removal of PEG from polyplex micelles prepared from block copolymer with acid-labile linkage between PEG and poly(l-lysine) (PLys) through exposure to acidic milieu. This structural change supports the previous investigation on the rod shapes that PEG shell prevents the DNA structure from being globule shaped as the most favored structure in minimizing surface area. Noteworthy, despite the PEG is continuously depleted, the structural change does not occur in gradual shortening manner but the rod shapes keep their length unchanged and abruptly transform into globule shapes. Analysis of PEG density reveals the transition occurred when tethered PEG of rod shapes has decreased to a critical crowdedness, i.e., discontacted with neighboring PEG, which eventually illuminates another contribution, rigidity of DNA packaged as bundle in the rod shapes, in addition to the steric repulsion of PEG, in sustaining rod shapes. This investigation affirms significant role of PEG and also DNA rigidity as bundle in the formation of rod-shaped structures enduring the quest of compaction of charge-neutralized DNA in the polyplex micelles.
Collapse
Affiliation(s)
- Theofilus A Tockary
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8656, Japan
| | - Kensuke Osada
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8656, Japan
- Japan Science and Technology Agency, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - Yusuke Motoda
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8656, Japan
| | - Shigehiro Hiki
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8656, Japan
| | - Qixian Chen
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8656, Japan
| | - Kaori M Takeda
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8656, Japan
| | - Anjaneyulu Dirisala
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8656, Japan
| | - Shigehito Osawa
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8656, Japan
| | - Kazunori Kataoka
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8656, Japan
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8656, Japan
- Division of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8656, Japan
| |
Collapse
|
48
|
Šindelka K, Limpouchová Z, Lísal M, Procházka K. The electrostatic co-assembly in non-stoichiometric aqueous mixtures of copolymers composed of one neutral water-soluble and one polyelectrolyte (either positively or negatively charged) block: a dissipative particle dynamics study. Phys Chem Chem Phys 2016; 18:16137-51. [DOI: 10.1039/c6cp01047d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electrostatic co-assembly in non-stoichiometric aqueous mixtures of diblock copolymers.
Collapse
Affiliation(s)
- Karel Šindelka
- Department of Physical and Macromolecular Chemistry
- Faculty of Science
- Charles University in Prague
- 128 40 Prague 2
- Czech Republic
| | - Zuzana Limpouchová
- Department of Physical and Macromolecular Chemistry
- Faculty of Science
- Charles University in Prague
- 128 40 Prague 2
- Czech Republic
| | - Martin Lísal
- Laboratory of Aerosols Chemistry and Physics
- Institute of Chemical Process Fundamentals of the CAS
- 165 02 Prague 6-Suchdol
- Czech Republic
- Department of Physics
| | - Karel Procházka
- Department of Physical and Macromolecular Chemistry
- Faculty of Science
- Charles University in Prague
- 128 40 Prague 2
- Czech Republic
| |
Collapse
|
49
|
Ogawa K. Effects of salt on intermolecular polyelectrolyte complexes formation between cationic microgel and polyanion. Adv Colloid Interface Sci 2015; 226:115-21. [PMID: 26472211 DOI: 10.1016/j.cis.2015.09.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Revised: 09/14/2015] [Accepted: 09/14/2015] [Indexed: 11/18/2022]
Abstract
The study of interpolyelectrolyte complex (IPEC) formation between cationic microgel and polyanion was presented. The size and molecular weight of cationic microgel are much larger than those of linear anionic polyelectrolyte. The resulting IPEC was divided by dynamic light scattering (DLS), static light scattering (SLS), and turbidity or spectrometry; (i) water-soluble intra-particle complexes consisting of one microgel to which linear polyelectrolytes bind; (ii) complex coacervates (inter-particle complexes composed of aggregated intra-particle complexes); and (iii) insoluble amorphous precipitates. These types depended on not only the mixing ratio of polyanion to cationic microgel but also salt concentration. This trend was discussed from IPEC's composition, thermodynamics of IPEC formation and the salt effect on intermolecular interactions which were expected in IPEC formation. The results obtained from the use of microgel in IPEC's study suggested that not only electrostatic interaction but also hydrophobic interaction play an important role in the aggregation or association of IPEC.
Collapse
Affiliation(s)
- Kazuyoshi Ogawa
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki 305-8572, Japan.
| |
Collapse
|
50
|
Abstract
During the last decades increasing attention has been paid to peptides as potential therapeutics. However, clinical applications of peptide drugs suffer from susceptibility to degradation, rather short circulation half-life, limited ability to cross physiological barriers and potential immunogenicity. These challenges can be addressed by using polymeric materials as peptide delivery systems, owing to their versatile structures and properties. A number of polymer-based vehicles have been developed to stabilize the peptides and to control their release rates. Unfortunately, no single polymer or formulation strategy has been considered ideal for all types of peptide drugs. In this review, currently used and potential polymer-based systems for the peptide delivery will be discussed.
Collapse
|