1
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Brás AR, Arizaga A, Sokolova D, Agirre U, Viciosa MT, Radulescu A, Prévost SF, Kruteva M, Pyckhout-Hintzen W, Schmidt AM. Influence of Polymer Polarity and Association Strength on the Properties of Poly(alkyl ether)-Based Supramolecular Melts. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Ana Rita Brás
- Institute of Physical Chemistry, University of Cologne, 50939Cologne, Germany
| | - Ana Arizaga
- Institute of Physical Chemistry, University of Cologne, 50939Cologne, Germany
| | - Daria Sokolova
- Institute of Physical Chemistry, University of Cologne, 50939Cologne, Germany
- Chemistry Department, University of Basel, BPR 1096/4058Basel, Schweiz
| | - Uxue Agirre
- Institute of Physical Chemistry, University of Cologne, 50939Cologne, Germany
| | - Maria Teresa Viciosa
- IN − Institute of Nanoscience and Nanotechnology, Instituto Superior Técnico, University of Lisbon, Avenida Rovisco Pais, 1049-001Lisbon, Portugal
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, University of Lisbon, Avenida Rovisco Pais, 1049-001, Lisbon, Portugal
| | - Aurel Radulescu
- Jülich Centre for Neutron Science (JCNS-1), Forschungszentrum Jülich GmbH, 52428Jülich, Germany
| | | | - Margarita Kruteva
- Jülich Centre for Neutron Science (JCNS-1), Forschungszentrum Jülich GmbH, 52428Jülich, Germany
| | - Wim Pyckhout-Hintzen
- Jülich Centre for Neutron Science (JCNS-1), Forschungszentrum Jülich GmbH, 52428Jülich, Germany
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2
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Effect of electrolytes on the sol-gel phase transitions in a Pluronic F127/carboxymethyl cellulose aqueous system: phase map, rheology and NMR self-diffusion study. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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3
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Luo H, Jiang K, Wang X, Yao H, Liang X, Li Y, Liu H. How multiple noncovalent interactions regulate the aggregation behavior of amphiphilic triblock copolymer/surface-active ionic liquid mixtures. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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4
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The in vivo fate of polymeric micelles. Adv Drug Deliv Rev 2022; 188:114463. [PMID: 35905947 DOI: 10.1016/j.addr.2022.114463] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 06/10/2022] [Accepted: 07/15/2022] [Indexed: 12/12/2022]
Abstract
This review aims to provide a systemic analysis of the in vivo, as well as subcellular, fate of polymeric micelles (PMs), starting from the entry of PMs into the body. Few PMs are able to cross the biological barriers intact and reach the circulation. In the blood, PMs demonstrate fairly good stability mainly owing to formation of protein corona despite controversial results reported by different groups. Although the exterior hydrophilic shells render PMs "long-circulating", the biodistribution of PMs into the mononuclear phagocyte systems (MPS) is dominant as compared with non-MPS organs and tissues. Evidence emerges to support that the copolymer poly(ethylene glycol)-poly(lactic acid) (PEG-PLA) is first broken down into pieces of PEG and PLA and then remnants to be eliminated from the body finally. At the cellular level, PMs tend to be internalized via endocytosis due to their particulate nature and disassembled and degraded within the cell. Recent findings on the effect of particle size, surface characteristics and shape are also reviewed. It is envisaged that unraveling the in vivo and subcellular fate sheds light on the performing mechanisms and gears up the clinical translation of PMs.
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5
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Cao C, Zhang L, Kent B, Wong S, Garvey CJ, Stenzel MH. The Protein Corona Leads to Deformation of Spherical Micelles. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Cheng Cao
- Centre for Advanced Macromolecular Design School of Chemistry The University of New South Wales Sydney 2052 Australia
| | - Lin Zhang
- Centre for Advanced Macromolecular Design School of Chemistry The University of New South Wales Sydney 2052 Australia
| | - Ben Kent
- Centre for Advanced Macromolecular Design School of Chemistry The University of New South Wales Sydney 2052 Australia
| | - Sandy Wong
- Centre for Advanced Macromolecular Design School of Chemistry The University of New South Wales Sydney 2052 Australia
| | - Christopher J. Garvey
- Australian Centre for Neutron Scattering Australia Nuclear Science and Technology Organisation Lucas Heights 2234 Australia
- Lund Institute for Advanced Neutron and X-ray Science 22100 Lund Sweden
- Biofilm-Research Center for Biointerfaces and Biomedical Science Department Faculty of Health and Society Malmö University 20506 Malmö Sweden
| | - Martina H. Stenzel
- Centre for Advanced Macromolecular Design School of Chemistry The University of New South Wales Sydney 2052 Australia
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6
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Cao C, Zhang L, Kent B, Wong S, Garvey CJ, Stenzel MH. The Protein Corona Leads to Deformation of Spherical Micelles. Angew Chem Int Ed Engl 2021; 60:10342-10349. [PMID: 33543582 DOI: 10.1002/anie.202101129] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Indexed: 02/01/2023]
Abstract
The formation of a non-specific protein corona around nanoparticles (NPs) has been identified as one of the culprits for failed nanomedicine. The amount and type of adsorbed protein from the blood plasma are known to determine the fate of NPs and the accessibility of targeting ligands. Herein, we show that the adsorbed protein may not only enlarge the NPs and change their surface properties but also, in the case of soft NPs such as polymer micelles, lead to deformation. Poly(1-O-methacryloyl -β-D-fructopyranose)-b-poly(methylmethacrylate) (P(1-O-MAFru)-b-PMMA) block co-polymers were self-assembled into NPs with a spherical core-shell morphology as determined by small angle neutron scattering (SANS). Upon incubation with albumin, TEM, SANS, and small angle X-ray scattering (SAXS) revealed the adsorption of albumin and deformation of the NPs with a spheroid geometry. Removal of the protein led to the reversal of the morphology back to the spherical core-shell structure. Structural studies and cell studies of uptake of the NPs imply that the observed deformation may influence blood circulation time and cell uptake.
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Affiliation(s)
- Cheng Cao
- Centre for Advanced Macromolecular Design, School of Chemistry, The University of New South Wales, Sydney, 2052, Australia
| | - Lin Zhang
- Centre for Advanced Macromolecular Design, School of Chemistry, The University of New South Wales, Sydney, 2052, Australia
| | - Ben Kent
- Centre for Advanced Macromolecular Design, School of Chemistry, The University of New South Wales, Sydney, 2052, Australia
| | - Sandy Wong
- Centre for Advanced Macromolecular Design, School of Chemistry, The University of New South Wales, Sydney, 2052, Australia
| | - Christopher J Garvey
- Australian Centre for Neutron Scattering, Australia Nuclear Science and Technology Organisation, Lucas Heights, 2234, Australia.,Lund Institute for Advanced Neutron and X-ray Science, 22100, Lund, Sweden.,Biofilm-Research Center for Biointerfaces and Biomedical Science Department, Faculty of Health and Society, Malmö University, 20506, Malmö, Sweden
| | - Martina H Stenzel
- Centre for Advanced Macromolecular Design, School of Chemistry, The University of New South Wales, Sydney, 2052, Australia
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7
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Myhre S, Amann M, Willner L, Knudsen KD, Lund R. How Detergents Dissolve Polymeric Micelles: Kinetic Pathways of Hybrid Micelle Formation in SDS and Block Copolymer Mixtures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:12887-12899. [PMID: 32960616 PMCID: PMC7660944 DOI: 10.1021/acs.langmuir.0c02123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 09/22/2020] [Indexed: 06/11/2023]
Abstract
Mixtures of amphiphilic polymers and surfactants are used in a wide range of applications, e.g., pharmaceuticals, detergents, cosmetics, and drug delivery systems. Still, many questions remain on how the structure and, in particular, the kinetics of block copolymer micelles are affected in the presence of surfactants and what controls the solubilization kinetics. In this work, we have studied the stability and solubilization kinetics of block copolymer micelles upon the addition of the surfactant sodium dodecyl sulfate (SDS) using small-angle X-ray/neutron scattering. The ability of the surfactant to dissolve polymer micelles or form mixed micelles has been investigated using two types of amphiphilic polymers, poly(ethylene-alt-propylene)-poly(ethylene oxide) (PEP1-PEO20) and n-alkyl-functionalized PEO (C28-PEO5). The exchange kinetics of C28-PEO5 micelles are in the order of hours, while PEP1-PEO20 micelles are known to be frozen on a practical timescale. In this work, we show that the addition of SDS to PEP1-PEO20 provides virtually no solubilization, even after an extended period of time. However, upon adding SDS to C28-PEO5 micelles, we observe micellar dissolution and formation of mixed micelles occurring on the timescale of hours. Using a coexistence model of mixed and neat micelles, the SAXS data were analyzed to provide detailed structural parameters over time. First, we observe a fast fragmentation/fission step followed by a slow reorganization process. The latter process is essentially independent of concentration at low volume fraction but is greatly accelerated at larger concentrations. This might indicate a crossover from a predominance of molecular exchange to fusion/fission processes.
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Affiliation(s)
- Synne Myhre
- Department
of Chemistry, University of Oslo, Oslo 0315, Norway
| | - Matthias Amann
- Department
of Chemistry, University of Oslo, Oslo 0315, Norway
| | - Lutz Willner
- Jülich
Centre for Neutron Science (JCNS-1) and Institute of Biological Information
Processing (IBI-8) Forschungszentrum Jülich GmbH, Jülich 52425, Germany
| | - Kenneth D. Knudsen
- IFE, Institute
for Energy Technology, Instituttveien 18, Kjeller 2007, Norway
| | - Reidar Lund
- Department
of Chemistry, University of Oslo, Oslo 0315, Norway
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8
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He H, Wang L, Ma Y, Yang Y, Lv Y, Zhang Z, Qi J, Dong X, Zhao W, Lu Y, Wu W. The biological fate of orally administered mPEG-PDLLA polymeric micelles. J Control Release 2020; 327:725-736. [DOI: 10.1016/j.jconrel.2020.09.024] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 09/08/2020] [Accepted: 09/11/2020] [Indexed: 01/09/2023]
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9
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Brinkkötter M, Geisler R, Großkopf S, Hellweg T, Schönhoff M. Influence of Li-Salt on the Mesophases of Pluronic Block Copolymers in Ionic Liquid. J Phys Chem B 2020; 124:9464-9474. [PMID: 33048549 DOI: 10.1021/acs.jpcb.0c06664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We study the complex mixture of a polyethylene oxide-b-polypropylene oxide-b-polyethylene oxide triblock copolymer (Pluronic F127) with ionic liquid (IL) and Li-salt, which is potentially interesting as an electrolyte system with decoupled mechanical and ion-transport properties. Small-angle X-ray scattering (SAXS) and differential scanning calorimetry (DSC) are employed to scrutinize the phase structures and elucidate the ternary phase diagram. These data are combined with the ion diffusivities obtained by pulsed field gradient (PFG) nuclear magnetic resonance (NMR). Analyzing the partial ternary phase diagram of F127/LiTFSI/Pyr14TFSI, hexagonal, lamellar, and micellar mesophases are identified, including two-phase coexistence regions. While the PPO block is immiscible with the liquid, and forms the backbone of the mesostructured aggregates, the PEO blocks are not well miscible with the IL. Poorly solvated, the latter may still crystallize. At a higher IL content, PEO is further solvated, but a major solvation effect occurs due to addition of Li-salt. Li ions promote solubilization of the PEO chains in the IL, since they coordinate to the PEO chains. This was identified as the mechanism of a transition of the mesostructures, with increasing Li-salt content changing from a hexagonal to a lamellar and further to a micellar phase. In summary, both, the amount of IL and its compatibility with the PEO block, the latter being controlled by the Li-salt amount, influence the compositions of the formed mesophases and the ion diffusion in their liquid regions.
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Affiliation(s)
- Marc Brinkkötter
- Institute of Physical Chemistry, University of Münster, Corrensstraße 28/30, 48149 Münster, Germany
| | - Ramsia Geisler
- Physical and Biophysical Chemistry, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany
| | - Sören Großkopf
- Physical and Biophysical Chemistry, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany
| | - Thomas Hellweg
- Physical and Biophysical Chemistry, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany
| | - Monika Schönhoff
- Institute of Physical Chemistry, University of Münster, Corrensstraße 28/30, 48149 Münster, Germany
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10
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Kancharla S, Zoyhofski NA, Bufalini L, Chatelais BF, Alexandridis P. Association between Nonionic Amphiphilic Polymer and Ionic Surfactant in Aqueous Solutions: Effect of Polymer Hydrophobicity and Micellization. Polymers (Basel) 2020; 12:polym12081831. [PMID: 32824165 PMCID: PMC7464887 DOI: 10.3390/polym12081831] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 02/02/2023] Open
Abstract
The interaction in aqueous solutions of surfactants with amphiphilic polymers can be more complex than the surfactant interactions with homopolymers. Interactions between the common ionic surfactant sodium dodecyl sulfate (SDS) and nonionic amphiphilic polymers of the poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) type have been probed utilizing a variety of experimental techniques. The polymer amphiphiles studied here are Pluronic F127 (EO100PO65EO100) and Pluronic P123 (EO19PO69EO19), having the same length PPO block but different length PEO blocks and, accordingly, very different critical micellization concentrations (CMC). With increasing surfactant concentration in aqueous solutions of fixed polymer content, SDS interacts with unassociated PEO-PPO-PEO molecules to first form SDS-rich SDS/Pluronic assemblies and then free SDS micelles. SDS interacts with micellized PEO-PPO-PEO to form Pluronic-rich SDS/Pluronic assemblies, which upon further increase in surfactant concentration, break down and transition into SDS-rich SDS/Pluronic assemblies, followed by free SDS micelle formation. The SDS-rich SDS/Pluronic assemblies exhibit polyelectrolyte characteristics. The interactions and mode of association between nonionic macromolecular amphiphiles and short-chain ionic amphiphiles are affected by the polymer hydrophobicity and its concentration in the aqueous solution. For example, SDS binds to Pluronic F127 micelles at much lower concentrations (~0.01 mM) when compared to Pluronic P123 micelles (~1 mM). The critical association concentration (CAC) values of SDS in aqueous PEO-PPO-PEO solutions are much lower than CAC in aqueous PEO homopolymer solutions.
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11
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Jibin K, Prasad JS, Saranya G, Shenoy SJ, Maiti KK, Jayasree RS. Optically controlled hybrid metamaterial of plasmonic spiky gold inbuilt graphene sheets for bimodal imaging guided multimodal therapy. Biomater Sci 2020; 8:3381-3391. [PMID: 32377650 DOI: 10.1039/d0bm00312c] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of multifunctional molecular diagnostic platforms for the concordant visualization and treatment of diseases with high sensitivity and resolution has recently become a crucial strategy in cancer management. Thus, engineering functional metamaterials with high therapeutic and imaging capabilities to elucidate diseases from their morphological behaviors to physiological mechanisms is an unmet need in the current scenario. Here, we report the design of a unique hybrid plasmonic nanoarchitecture for targeted multiple phototherapies of breast cancer by simultaneous real-time monitoring through fluorescence and surface-enhanced Raman scattering (SERS) techniques. The nanoframework consisted of plasmonic gold-graphene hybrids tethered with folic acid-ligated chitosan-modified photosensitizer (PpIX) to afford target-specific localized photothermal and photodynamic therapy. The hybrid vehicle also served as an excellent nanocarrier for the efficient loading and stimuli-responsive release of the chemotherapeutic drug doxorubicin (DOX) to enhance the therapeutic efficacy, thereby forming a trimodal nanomedicine against cancer. The cytotoxic effects induced by the cumulative action of the triplet therapeutic tools were visualized through both fluorescence and SERS imaging channels. Moreover, it also generated synchronized therapeutic effects resulting in the effective regression of tumor volume without propagating any toxic effects to other organs of the animals. Taken together, by virtue of strong light-matter interactions, the nanoprobe showed enhanced photoadsorption, which facilitated amplified light-reactive therapeutic and imaging efficacies along with targeted and enhanced chemotherapy, both in vitro and in vivo, which may offer promising outcomes in clinical research.
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Affiliation(s)
- Kunnumpurathu Jibin
- Division of Biophotonics and Imaging, Department of Biomaterial Sciences and Technology, Sree Chitra Tirunal Institute for Medical Sciences and Technology (SCTIMST), Thiruvananthapuram 695 019, India
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12
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Samanta P, Dutta Choudhury S, Pal H. Kinetics and Energetics of Ultrafast Bimolecular Photoinduced Electron Transfer Reactions in Pluronic-Surfactant Supramolecular Assemblies. J Phys Chem B 2019; 123:5942-5953. [PMID: 31246469 DOI: 10.1021/acs.jpcb.9b04223] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Understanding the kinetics and energetics of photoinduced electron transfer (PET) reactions in constrained media has attracted considerable research interest, as constrained media provide a handle to tune the microenvironments and consequently the mechanisms of PET reactions. In this study, PET reactions between excited 7-aminocoumarin acceptors and ground-state N,N-dimethylaniline (DMAN) donor have been investigated in mixed micellar media composed of triblock copolymer, P123, and anionic surfactant, sodium dodecyl sulfate (SDS), with varying SDS-to-P123 molar ratios (n values). The objective is to elucidate the role of the n values in the rates and energetics of PET reactions over the entire time range from the subpicosecond to the subnanosecond domain, especially in regard to the applicability of the two-dimensional ET (2DET) mechanism. It is observed that by changing the n values, there is a significant change in the hydration characteristics of the SDS-P123 mixed micelles, which in turn changes the kinetics to energetic correlations for the PET reactions. Fluorescence from the excited coumarin acceptors undergoes substantial quenching due to PET from DMAN donor in all of the studied micelles as evidenced from steady-state, subnanosecond time-resolved (TR) and ultrafast (subpicosecond/femtosecond) fluorescence up-conversion measurements. The quenching rate constants (kq), estimated from subnanosecond TR fluorescence studies, and the individual component-wise decay rates (τi-1), estimated from up-conversion measurements, increase gradually with increasing n value, corroborating well with the sequentially increased micropolarity of the mixed micelles. Interestingly, it is observed that the correlations of either kq (from subnanosecond studies) or τi-1 (from femtosecond studies) with the reaction exergonicity (-ΔG°) show the noteworthy Marcus inversion (MI) behavior in a very consistent and similar manner for the entire time window, from subpicoseconds to subnanoseconds. The onset of MI always appears at an exergonicity (-ΔG°MI) much lower than solvent reorganization energy (λs), suggesting the involvement of 2DET mechanism throughout the subpicosecond to subnanosecond time domains. The present results thus provide a comprehensive picture of the kinetics and energetics of the PET reactions in constrained media for the whole time span and unequivocally establish the applicability of 2DET mechanism for the PET reactions in constrained media, eliminating any apprehensions about the effect of time resolution of the subnanosecond setup on the observed Marcus inversion behavior. This is indeed an important finding, providing valuable insights for PET reactions in constrained media, which has not been explored explicitly in any of the previous studies. Observation of MI behavior and the modulations in the PET reactions by simply changing the composition of SDS in the SDS-P123 mixed micelles are noteworthy findings of the present study and are expected to find suitable applications for better utilization and outcome of the PET reactions.
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Affiliation(s)
- Papu Samanta
- Homi Bhabha National Institute , Training School Complex , Anushaktinagar, Mumbai 400094 , India
| | | | - Haridas Pal
- Homi Bhabha National Institute , Training School Complex , Anushaktinagar, Mumbai 400094 , India
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13
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Schilcher I, Ledinski G, Radulović S, Hallström S, Eichmann T, Madl T, Zhang F, Leitinger G, Kolb-Lenz D, Darnhofer B, Birner-Gruenberger R, Wadsack C, Kratky D, Marsche G, Frank S, Cvirn G. Endothelial lipase increases antioxidative capacity of high-density lipoprotein. Biochim Biophys Acta Mol Cell Biol Lipids 2019; 1864:1363-1374. [PMID: 31220617 PMCID: PMC6699986 DOI: 10.1016/j.bbalip.2019.06.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 05/31/2019] [Accepted: 06/14/2019] [Indexed: 12/20/2022]
Abstract
Endothelial lipase (EL) is a strong determinant of structural and functional properties of high-density lipoprotein (HDL). We examined whether the antioxidative capacity of HDL is affected by EL. EL-modified HDL (EL-HDL) and control EV-HDL were generated by incubation of HDL with EL- overexpressing or control HepG2 cells. As determined by native gradient gel electrophoresis, electron microscopy, and small-angle X-ray scattering EL-HDL is smaller than EV-HDL. Mass spectrometry revealed an enrichment of EL-HDL with lipolytic products and depletion of phospholipids and triacylglycerol. Kinetics of conjugated diene formation and HPLC-based malondialdehyde quantification revealed that EL-HDL exhibited a significantly higher resistance to copper ion-induced oxidation and a significantly higher capacity to protect low-density lipoprotein (LDL) from copper ion-induced oxidation when compared to EV-HDL. Depletion of the lipolytic products from EL-HDL abolished the capacity of EL-HDL to protect LDL from copper ion-induced oxidation, which could be partially restored by lysophosphatidylcholine enrichment. Proteomics of HDL incubated with oxidized LDL revealed significantly higher levels of methionine 136 sulfoxide in EL-HDL compared to EV-HDL. Chloramine T (oxidizes methionines and modifies free thiols), diminished the difference between EL-HDL and EV-HDL regarding the capacity to protect LDL from oxidation. In absence of LDL small EV-HDL and EL-HDL exhibited higher resistance to copper ion-induced oxidation when compared to respective large particles. In conclusion, the augmented antioxidative capacity of EL-HDL is primarily determined by the enrichment of HDL with EL-generated lipolytic products and to a lesser extent by the decreased HDL particle size and the increased activity of chloramine T-sensitive mechanisms.
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Affiliation(s)
- Irene Schilcher
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria
| | - Gerhard Ledinski
- Otto Loewi Research Center, Division of Physiological Chemistry, Medical University of Graz, Neue Stiftingtalstraße 6/3, 8010 Graz, Austria
| | - Snježana Radulović
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria
| | - Seth Hallström
- Otto Loewi Research Center, Division of Physiological Chemistry, Medical University of Graz, Neue Stiftingtalstraße 6/3, 8010 Graz, Austria
| | - Thomas Eichmann
- Institute of Molecular Biosciences, University of Graz, Heinrichstrasse 31, 8010 Graz, Austria; Center for Explorative Lipidomics, BioTechMed-Graz, Heinrichstrasse 31, 8010 Graz, Austria
| | - Tobias Madl
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria; Omics Center Graz, BioTechMed-Graz, Stiftingtalstrasse 24, 8010 Graz, Austria
| | - Fangrong Zhang
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria
| | - Gerd Leitinger
- Gottfried Schatz Research Center, Department of Cell Biology, Histology and Embryology. Center for Medical Research, Medical University of Graz, Neue Stiftingtalstraße 6/3, 8010 Graz, Austria
| | - Dagmar Kolb-Lenz
- Gottfried Schatz Research Center, Department of Cell Biology, Histology and Embryology. Center for Medical Research, Medical University of Graz, Neue Stiftingtalstraße 6/3, 8010 Graz, Austria
| | - Barbara Darnhofer
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria; Omics Center Graz, BioTechMed-Graz, Stiftingtalstrasse 24, 8010 Graz, Austria; Austrian Center of Industrial Biotechnology, Petersgasse 14, A-8010 Graz, Austria
| | - Ruth Birner-Gruenberger
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria; Omics Center Graz, BioTechMed-Graz, Stiftingtalstrasse 24, 8010 Graz, Austria; Austrian Center of Industrial Biotechnology, Petersgasse 14, A-8010 Graz, Austria
| | - Christian Wadsack
- BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria; Department of Obstetrics and Gynecology, Medical University of Graz, Auenbruggerplatz 14, 8036 Graz, Austria
| | - Dagmar Kratky
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria
| | - Gunther Marsche
- BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria; Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria
| | - Saša Frank
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria.
| | - Gerhard Cvirn
- Otto Loewi Research Center, Division of Physiological Chemistry, Medical University of Graz, Neue Stiftingtalstraße 6/3, 8010 Graz, Austria
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14
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Mora AK, Basu A, Kalel R, Nath S. Polymer-assisted drug sequestration from plasma protein by a surfactant with curtailed denaturing capacity. Phys Chem Chem Phys 2019; 21:7127-7136. [PMID: 30887975 DOI: 10.1039/c8cp03576h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The capability of a surfactant to sequester a drug bound to plasma protein was investigated using steady-state and time-resolved spectroscopic techniques. Surfactants are known to denature protein, and hence are not suitable for the sequestration of a drug from protein. Herein, we show that the denaturing capacity of a surfactant is curtailed completely and its drug sequestration power is enhanced in the presence of biocompatible Pluronic micelles due to the formation of unique supramolecular assemblies. Further, our detailed studies indicate that the concentration of surfactant required for the sequestration of a drug is less than its critical micellar concentration (CMC). The extent of sequestration of drug by polymer-surfactant supramolecular assemblies can be tuned finely by controlling the concentration of surfactant. Detailed analysis showed that up to ∼85% sequestration of a drug from plasma protein could be achieved using a sub-CMC concentration of surfactant. Our results clearly show that controlled sequestration of a drug from plasma protein can be achieved with a reduction in the protein denaturing properties of surfactants.
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Affiliation(s)
- Aruna K Mora
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.
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15
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Cao C, Zhao J, Lu M, Garvey CJ, Stenzel MH. Correlation between Drug Loading Content and Biological Activity: The Complexity Demonstrated in Paclitaxel-Loaded Glycopolymer Micelle System. Biomacromolecules 2019; 20:1545-1554. [DOI: 10.1021/acs.biomac.8b01707] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Cheng Cao
- Centre for Advanced Macromolecular Design, School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia
- Australia Nuclear Science and Technology Organisation, Lucas Heights, New South Wales 2234, Australia
| | - Jiacheng Zhao
- Centre for Advanced Macromolecular Design, School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Mingxia Lu
- Centre for Advanced Macromolecular Design, School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Christopher J. Garvey
- Australia Nuclear Science and Technology Organisation, Lucas Heights, New South Wales 2234, Australia
| | - Martina H. Stenzel
- Centre for Advanced Macromolecular Design, School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia
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16
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Tasca E, Giudice AD, Galantini L, Schillén K, Giuliani AM, Giustini M. A fluorescence study of the loading and time stability of doxorubicin in sodium cholate/PEO-PPO-PEO triblock copolymer mixed micelles. J Colloid Interface Sci 2019; 540:593-601. [PMID: 30677613 DOI: 10.1016/j.jcis.2019.01.075] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 01/14/2019] [Accepted: 01/16/2019] [Indexed: 11/25/2022]
Abstract
HYPOTHESIS Doxorubicin hydrochloride (DX) is one of the most powerful anticancer agents though its clinical use is impaired by severe undesired side effects. DX encapsulation in nanocarrier systems has been introduced as a mean to reduce its toxicity. Micelles of the nonionic triblock copolymers of poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO) (PEO-PPO-PEO), are very promising carrier systems. The positive charge of DX confines the drug to the hydrophilic corona region of the micelles. The use of mixed micelles of PEO-PPO-PEO copolymers and a negatively charged bile salt should favour the solubilization of DX in the apolar core region of the micelles. EXPERIMENTS We studied the DX uptake in the micellar systems formed by sodium cholate (NaC) and the PEO100PPO65PEO100 (F127) copolymer, prepared with different mole ratios (MR = nNaC/nF127) in the range 0 ÷ 1. The systems were characterized by small angle X-ray scattering (SAXS) and dynamic light scattering (DLS); DX encapsulation was followed by steady-state and time-resolved fluorescence spectroscopy. FINDINGS The successful solubilization of DX in the host micellar systems did not affect their structure, as evidenced by both SAXS and DLS data. In the presence of NaC, DX experiences a more apolar environment as indicated by its characteristic fluorescent behaviour. The almost complete uptake of the drug occurred shortly after the sample preparation; however, time resolved fluorescence revealed a slow partition of DX between corona and core regions of the micelles. DX degradation in the mixed micellar systems was markedly reduced relative to aqueous DX solutions.
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Affiliation(s)
- Elisamaria Tasca
- Chemistry Department, University "La Sapienza", P.le Aldo Moro 5, 00185 Rome, Italy
| | | | - Luciano Galantini
- Chemistry Department, University "La Sapienza", P.le Aldo Moro 5, 00185 Rome, Italy; Centre for Colloid and Surface Science - C.S.G.I. Operative Unit of Bari, c/o Chemistry Department, University "Aldo Moro", Bari, Italy
| | - Karin Schillén
- Division of Physical Chemistry, Department of Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | | | - Mauro Giustini
- Chemistry Department, University "La Sapienza", P.le Aldo Moro 5, 00185 Rome, Italy; Centre for Colloid and Surface Science - C.S.G.I. Operative Unit of Bari, c/o Chemistry Department, University "Aldo Moro", Bari, Italy.
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17
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Roucher A, Emo M, Vibert F, Stébé MJ, Schmitt V, Jonas F, Backov R, Blin JL. Investigation of mixed ionic/nonionic building blocks for the dual templating of macro-mesoporous silica. J Colloid Interface Sci 2019; 533:385-400. [DOI: 10.1016/j.jcis.2018.08.068] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 08/21/2018] [Accepted: 08/22/2018] [Indexed: 10/28/2022]
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18
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Samanta P, Halder P, Bahadur P, Dutta Choudhury S, Pal H. Effect of Ionic Liquids as Cosurfactants on Photoinduced Electron Transfer in Tetronic Micelles. J Phys Chem B 2018; 122:10190-10201. [PMID: 30351120 DOI: 10.1021/acs.jpcb.8b08766] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This study investigates the role of varying alkyl chain lengths of a series of surface-active 1-alkyl-3-methylimidazolium tetrafluoroborate ([C nMIm][BF4], n = 4, 6, and 10) ionic liquids (ILs) as cosurfactants in modifying the micellar characteristics of a tetronic star-block copolymer, T1304, and the consequent effects on bimolecular photoinduced electron transfer (PET) reactions carried out in these T1304-IL mixed micellar systems. Using coumarin 153 as the probe dye and following ground-state absorption, steady-state fluorescence, and time-resolved emission measurements, the micropolarity, microviscosity, and solvent relaxation dynamics in the micellar palisade layer have been revealed both in pure T1304 and in T1304-IL systems. With increasing alkyl chain length of the ILs, the palisade layer of the micelles gradually becomes more polar and less viscous, suggesting better incorporation of the longer alkyl chain length ILs as cosurfactants into the T1304 micelles. The bimolecular PET reactions, involving 7-aminocoumarins as acceptors and N, N-dimethylaniline as the donor, are considerably modulated in T1304 micelles by the presence of the ILs, the effect being more prominent for ILs with longer alkyl chain lengths. In all of the micellar systems, correlations of the electron transfer (ET) kinetics with the reaction exergonicity (-Δ G0) show clear Marcus inversion (MI) behavior where onsets of MI invariably appear at significantly lower exergonicities, suggesting the involvement of a two-dimensional ET mechanism. Interestingly, the Marcus correlations display significant variations, namely, enhanced reaction rates and gradual shift in the onset of MI toward higher exergonicity, as longer alkyl chain length ILs are sequentially introduced as cosurfactants. From the observed results, it is convincingly realized that 1-alkyl-3-methylimidazolium-based ILs can be used satisfactorily as cosurfactants in tetronic star-block copolymer solutions to modulate PET reactions very significantly for their better utilizations in suitable applied areas.
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Affiliation(s)
- Papu Samanta
- Homi Bhabha National Institute , Training School Complex , Anushaktinagar, Mumbai 400094 , India
| | | | - Pratap Bahadur
- Department of Chemistry , Veer Narmad South Gujarat University , Surat 395007 , India
| | | | - Haridas Pal
- Homi Bhabha National Institute , Training School Complex , Anushaktinagar, Mumbai 400094 , India
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19
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Kalel R, Mora AK, Patro BS, Palit DK, Nath S. Synergistic enhancement in the drug sequestration power and reduction in the cytotoxicity of surfactants. Phys Chem Chem Phys 2017; 19:25446-25455. [DOI: 10.1039/c7cp05042a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Surfactants in supramolecular assemblies show a significant increase in their drug sequestration power with a remarkably reduced cytotoxicity.
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Affiliation(s)
- Rahul Kalel
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - Aruna K. Mora
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
- Homi Bhabha National Institute
| | - Birija S. Patro
- Homi Bhabha National Institute
- Training School Complex
- Anushaktinagar
- Mumbai 400094
- India
| | - Dipak K. Palit
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
- Homi Bhabha National Institute
| | - Sukhendu Nath
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
- Homi Bhabha National Institute
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20
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Mariani G, Schweins R, Gröhn F. Electrostatic Self-Assembly of Dendrimer Macroions and Multivalent Dye Counterions: The Role of Solution Ionic Strength. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00565] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Giacomo Mariani
- Department
of Chemistry and Pharmacy and Interdisciplinary Center for Molecular
Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, D-91058 Erlangen, Germany
- Institut Laue-Langevin
DS/LSS, 71 Avenue des Martyrs, F-38000 Grenoble, France
| | - Ralf Schweins
- Institut Laue-Langevin
DS/LSS, 71 Avenue des Martyrs, F-38000 Grenoble, France
| | - Franziska Gröhn
- Department
of Chemistry and Pharmacy and Interdisciplinary Center for Molecular
Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, D-91058 Erlangen, Germany
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21
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Bayati S, Galantini L, Knudsen KD, Schillén K. Complexes of PEO-PPO-PEO triblock copolymer P123 and bile salt sodium glycodeoxycholate in aqueous solution: A small angle X-ray and neutron scattering investigation. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.05.096] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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23
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Mora AK, Singh PK, Nath S. Controlled Sequestration of DNA Intercalated Drug by Polymer–Surfactant Supramolecular Assemblies. J Phys Chem B 2016; 120:4143-51. [DOI: 10.1021/acs.jpcb.5b12689] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Aruna K. Mora
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Prabhat K. Singh
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Sukhendu Nath
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
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24
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Bayati S, Anderberg Haglund C, Pavel NV, Galantini L, Schillén K. Interaction between bile salt sodium glycodeoxycholate and PEO–PPO–PEO triblock copolymers in aqueous solution. RSC Adv 2016. [DOI: 10.1039/c6ra12514j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Bile salts can associate to PEO–PPO–PEO block copolymer micelles and disintegrate them depending on the relative block length and molecular weight of the copolymers and bile salt/copolymer molar ratio.
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Affiliation(s)
- S. Bayati
- Division of Physical Chemistry
- Department of Chemistry
- Lund University
- SE-221 00 Lund
- Sweden
| | - C. Anderberg Haglund
- Division of Physical Chemistry
- Department of Chemistry
- Lund University
- SE-221 00 Lund
- Sweden
| | - N. V. Pavel
- Department of Chemistry
- “Sapienza” University of Rome
- 00185 Rome
- Italy
| | - L. Galantini
- Department of Chemistry
- “Sapienza” University of Rome
- 00185 Rome
- Italy
| | - K. Schillén
- Division of Physical Chemistry
- Department of Chemistry
- Lund University
- SE-221 00 Lund
- Sweden
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25
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Bayati S, Galantini L, Knudsen KD, Schillén K. Effects of Bile Salt Sodium Glycodeoxycholate on the Self-Assembly of PEO-PPO-PEO Triblock Copolymer P123 in Aqueous Solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:13519-13527. [PMID: 26616587 DOI: 10.1021/acs.langmuir.5b03828] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A comprehensive experimental study on the interaction between the PEO-PPO-PEO block copolymer P123 (EO20PO68EO20) and the anionic bile salt sodium glycodeoxycholate (NaGDC) in water has been performed. The work was aimed at investigating the suitability of using P123 as bile salt sequestrant beside the fundamental aspects of PEO-PPO-PEO block copolymer-bile salt interactions. Various experimental techniques including dynamic and static light scattering, small-angle X-ray scattering, and differential scanning calorimetry (DSC) were employed in combination with electrophoretic mobility measurements. The system was investigated at a constant P123 concentration of 1.74 mM and with varying bile salt concentrations up to approximately 250 mM NaGDC (or a molar ratio n(NaGDC)/n(P123) = 144). In the mixed P123-NaGDC solutions, the endothermic process related to the self-assembly of P123 was observed to gradually decrease in enthalpy and shift to higher temperatures upon progressive addition of NaGDC. To explain this effect, the formation of NaGDC micelles carrying partly dehydrated P123 unimers was proposed and translated into a stoichiometric model, which was able to fit the experimental DSC data. In the mixtures at low molar ratios, NaGDC monomers associated with the P123 micelle forming a charged "P123 micelle-NaGDC" complex with a dehydrated PPO core. These complexes disintegrated upon increasing NaGDC concentration to form small "NaGDC-P123" complexes visualized as bile salt micelles including one or a few P123 copolymer chains.
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Affiliation(s)
- Solmaz Bayati
- Division of Physical Chemistry, Department of Chemistry, Lund University , P.O. Box 124, SE-221 00 Lund, Sweden
| | - Luciano Galantini
- Department of Chemistry, Sapienza University of Rome , P. le A. Moro 5, 00185 Rome, Italy
| | - Kenneth D Knudsen
- Institute for Energy Technology, P.O. Box 40, NO-2027 Kjeller, Norway
| | - Karin Schillén
- Division of Physical Chemistry, Department of Chemistry, Lund University , P.O. Box 124, SE-221 00 Lund, Sweden
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26
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Mansour OT, Cattoz B, Heenan RK, King SM, Griffiths PC. Probing competitive interactions in quaternary formulations. J Colloid Interface Sci 2015; 454:35-43. [DOI: 10.1016/j.jcis.2015.04.068] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 04/29/2015] [Accepted: 04/30/2015] [Indexed: 11/16/2022]
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27
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Ray D, Pramanik A, Guchhait N. Modulation of Excited State Proton Transfer Dynamics of a Lactim-Lactam Tautomeric System in Different Block Copolymer-Surfactant Aggregates. J Phys Chem B 2015; 119:10114-23. [PMID: 26147185 DOI: 10.1021/acs.jpcb.5b02363] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The proton transfer (PT) process in 1-(2-hydroxy-5-chloro-phenyl)-3,5-dioxo-1H-imidazo-[3,4-b]isoindole (ADCL) has been studied in three different copolymer-surfactant supramolecular assemblies prepared in aqueous 1% P123 triblock copolymer micellar solution with varying concentrations of surfactants (sodium dodecyl sulfate (SDS), cetyltrimethylammonium bromide (CTAB), and triton-X-100 (TX 100)). The aim of the present study is to monitor the modulation of the PT process by changing the degree of micellar hydration inside the P123 micelle with the addition of the three different surfactants (two ionic and one non ionic), that is, in P123-surfactant aggregates. Besides, a comparative study has been done with these results with those in water, pure P123 micellar medium and three different surfactants medium. The micropolarity measurement and time-resolved fluorescence anisotropic measurements have been performed to evaluate the binding location of the probe (ADCL) in the three different copolymer-surfactant supramolecular assemblies. It is found that the micropolarity at the binding site of the molecule in the various environments largely influences the PT rate of ADCL. The PT rate is found to be the slowest in the P123 medium and in P123-surfactant aggregates the rate becomes faster as the micropolarity around the binding locations of the molecule in these aggregates is higher in comparison to that in P123 micelle.
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Affiliation(s)
- Debarati Ray
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata-700009, India
| | - Animesh Pramanik
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata-700009, India
| | - Nikhil Guchhait
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata-700009, India
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28
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Rakshit S, Moulik SP, Bhattacharya SC. Deciphering the Role of the Length of the Corona in Controlled NSET within Triblock Copolymers. J Phys Chem B 2015; 119:8457-67. [DOI: 10.1021/acs.jpcb.5b04001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Soumyadipta Rakshit
- Department
of Chemistry, Jadavpur University, Kolkata 700 032, India
- Centre
for Surface Science, Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Satya Priya Moulik
- Department
of Chemistry, Jadavpur University, Kolkata 700 032, India
- Centre
for Surface Science, Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Subhash Chandra Bhattacharya
- Department
of Chemistry, Jadavpur University, Kolkata 700 032, India
- Centre
for Surface Science, Department of Chemistry, Jadavpur University, Kolkata 700 032, India
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29
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Verma P, Pal H. Tuning of electron transfer reactions in pluronic-surfactant supramolecular assemblies. Phys Chem Chem Phys 2015; 17:15400-11. [PMID: 26006183 DOI: 10.1039/c5cp01480h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photoinduced electron transfer (ET) reaction between an anionic acceptor, coumarin-343 (C343), and a neutral donor, N,N-dimethylaniline (DMAN), has been investigated in composite supramolecular assemblies (mixed micelles) comprised of a pluronic copolymer (P123: EO20-PO70-EO20 or F88: EO103-PO39-EO103 where EO: ethylene oxide and PO: propylene oxide) and a cationic surfactant (CTAC: cetyltrimethylammonium chloride), following fluorescence quenching studies. Systematic increase in the quenching rates for the studied donor-acceptor system with the increasing CTAC to pluronic molar ratio in the mixed micelles demonstrates a large modulation in the ET rates. The mixed micellar systems in the present cases are formed through the incorporation of the hydrocarbon chains of CTAC into the poly-PO core of the pluronic micelles whereby the cationic head groups of CTAC are placed at the periphery of the micellar core, protruded into the hydrated poly-EO corona region, leading to the formation of a positively charged layer deep inside these mixed micelles. Thus, the anionic C343 dye, initially dissolved at the micelle-water interface, experiences a gradually increasing electrostatic attraction and is therefore systematically dragged deeper inside the micellar corona, as the CTAC composition is increased in the mixed micellar systems. Consequently, the ET rate of the C343-DMAN pair undergoes a large enhancement in the studied mixed micellar systems with the increasing CTAC to pluronic molar ratio. The present strategy of modulating ET reactions using such composite supramolecular assemblies can find applications in areas where bimolecular ET is an integral reaction step.
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Affiliation(s)
- Poonam Verma
- Radioanalytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.
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30
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Ruso JM, Pardo V, Sartuqui J, Gravina N, D'Elía NL, Pieroni OI, Messina PV. Photoluminescent SBA-16 Rhombic Dodecahedral Particles: Assembly, Characterization, and ab Initio Modeling. ACS APPLIED MATERIALS & INTERFACES 2015; 7:12740-12750. [PMID: 26013476 DOI: 10.1021/acsami.5b01637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Nowadays, the use of polyhedral instead of spherical particles as building blocks of engineering new materials has become an area of particular effort in the scientific community. Therefore, fabricating in a reproducible manner large amounts of uniform crystal-like particles is a huge challenge. In this work we report a low reagent-consuming binary surfactant templated method mediated by a hydrothermal treatment as a facile and controllable route for the synthesis of crystal-like rombdodecahedral particles exhibiting SBA-16 mesoporosity. It was determined that the hydrothermal treatment conditions were a key point upon the final material morphology, surface area, microporosity, wall thickness, and mesopore width. As a consequence of their internal mesoporosity order, rhombic dodecahedral synthesized particles exhibited highly efficient ultraviolet absorptions and photoluminescence emissions at room temperature. Conducting experimental and theoretical comparative studies allowed us to infer that the presence of intrinsic defects confined into an ordered mesoporous structure plays a very important role in semiconductor materials. The information presented here is expected to be useful, giving new, accurate information, for the construction of novel technological devices.
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Affiliation(s)
- Juan M Ruso
- †Department of Applied Physics, University of Santiago de Compostela, Santiago de Compostela 15701,Spain
| | - Victor Pardo
- †Department of Applied Physics, University of Santiago de Compostela, Santiago de Compostela 15701,Spain
- ‡Technological Research Institute, University of Santiago de Compostela, Santiago de Compostela 15701, Spain
| | - Javier Sartuqui
- §Department of Chemistry, INQUISUR-CONICET, Universidad Nacional del Sur, Av. Alem 1253, Bahía Blanca 8000, Argentina
| | - Noel Gravina
- §Department of Chemistry, INQUISUR-CONICET, Universidad Nacional del Sur, Av. Alem 1253, Bahía Blanca 8000, Argentina
| | - Noelia L D'Elía
- §Department of Chemistry, INQUISUR-CONICET, Universidad Nacional del Sur, Av. Alem 1253, Bahía Blanca 8000, Argentina
| | - Olga I Pieroni
- §Department of Chemistry, INQUISUR-CONICET, Universidad Nacional del Sur, Av. Alem 1253, Bahía Blanca 8000, Argentina
| | - Paula V Messina
- §Department of Chemistry, INQUISUR-CONICET, Universidad Nacional del Sur, Av. Alem 1253, Bahía Blanca 8000, Argentina
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31
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Fox CH, Engler AC, Toney MF, Hedrick JL, Frank CW. Tunable mesoscale-structured self-assembled hydrogels synthesized by organocatalytic ring-opening polymerization. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.03.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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32
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Roy A, Kundu N, Banik D, Kuchlyan J, Sarkar N. How does bile salt penetration affect the self-assembled architecture of pluronic P123 micelles? – light scattering and spectroscopic investigations. Phys Chem Chem Phys 2015; 17:19977-90. [DOI: 10.1039/c5cp02296g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The triblock copolymer of the type (PEO)20–(PPO)70–(PEO)20 (P123) forms a mixed supramolecular aggregate with different bile salts, sodium deoxycholate (NaDC) and sodium taurocholate (NaTC), having different hydrophobicity.
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Affiliation(s)
- Arpita Roy
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Niloy Kundu
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Debasis Banik
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Jagannath Kuchlyan
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Nilmoni Sarkar
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
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33
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Prabhu SR, Dutt GB. Solute dynamics in block-copolymer reverse micelles: do water content and copolymer concentration alter the microenvironment? J Chem Phys 2014; 140:234905. [PMID: 24952566 DOI: 10.1063/1.4882905] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Solute dynamics has been explored in reverse micelles formed with the triblock copolymer (EO)13-(PO)30-(EO)13 (L64), where EO and PO represent ethylene oxide and propylene oxide units, respectively, with small amounts of water in p-xylene. To this effect, nonradiative rate constants (knr) and reorientation times (τr) of two carbocyanine derivatives, 3,3'-diethyloxadicarbocyanine iodide (DODCI) and merocyanine 540 (MC 540) have been measured at different mole ratios of water to copolymer (W) and also at three copolymer concentrations. By examining the nonradiative rate constants and the reorientation times of the two solutes, the microenvironment offered by L64/water/p-xylene reverse micellar system has been investigated. It has been observed that there is no variation in the nonradiative rate constants as well as in the reorientation times of both DODCI and MC 540 with an increase in W and [L64]. Since knr represents activated twist motion about the double bonds for these solutes, it is sensitive to the local friction and likewise, τr also provides information about the microenvironment. Thus, the results of this study indicate that DODCI and MC 540 are located in the cores of the L64 reverse micelles that are made up of hydrated ethylene oxide blocks and the hydration levels are not altered despite an increase in the water content and copolymer concentration. In other words, there is no variation in the microenvironment offered by L64/water/p-xylene reverse micellar system upon increasing W and [L64].
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Affiliation(s)
- Sugosh R Prabhu
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - G B Dutt
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
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Wang R, Tang Y, Wang Y. Effects of cationic ammonium gemini surfactant on micellization of PEO-PPO-PEO triblock copolymers in aqueous solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:1957-1968. [PMID: 24528103 DOI: 10.1021/la500025k] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Effects of cationic ammonium gemini surfactant hexamethylene-1,6-bis(dodecyldimethylammonium bromide) (12-6-12) on the micellization of two triblock copolymers of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide), F127 (EO97PO69EO97) and P123 (EO20PO70EO20), have been studied in aqueous solution by differential scanning calorimetry (DSC), dynamic light scattering (DLS), isothermal titration calorimetry (ITC), and NMR techniques. Compared with traditional single-chain ionic surfactants, 12-6-12 has a stronger ability of lowering the CMT of the copolymers, which should be attributed to the stronger aggregation ability and lower critical micelle concentration of 12-6-12. The critical micelle temperature (CMT) of the two copolymers decreases as the 12-6-12 concentration increases and the ability of 12-6-12 in lowering the CMT of F127 is slightly stronger than that of P123. Moreover, a combination of ITC and DLS has shown that 12-6-12 binds to the copolymers at the temperatures from 16 to 40 °C. At the temperatures below the CMT of the copolymers, 12-6-12 micelles bind on single copolymer chains and induce the copolymers to initiate aggregation at very low 12-6-12 concentration. At the temperatures above the CMT of the copolymers, the interaction of 12-6-12 with both monomeric and micellar copolymers leads to the formation of the mixed copolymer/12-6-12 micelles, then the mixed micelles break into smaller mixed micelles, and finally free 12-6-12 micelles form with the increase of the 12-6-12 concentration.
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Affiliation(s)
- Ruijuan Wang
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
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Prabhu SR, Dutt GB. Can Critical Packing Parameter Depict Probe Rotation in Block-Copolymer Reverse Micelles? J Phys Chem B 2013; 117:5868-74. [DOI: 10.1021/jp4022807] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Sugosh R. Prabhu
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - G. B. Dutt
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
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Decondensation of cationic gemini surfactant-induced DNA aggregates using triblock copolymer (PEO)20–(PPO)70–(PEO)20. Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-2954-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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37
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Prameela GKS, Phani Kumar BVN, Aswal VK, Mandal AB. Influence of water-insoluble nonionic copolymer E6P39E6 on the microstructure and self-aggregation dynamics of aqueous SDS solution—NMR and SANS investigations. Phys Chem Chem Phys 2013; 15:17577-86. [DOI: 10.1039/c3cp52265b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Bhattacharjee J, Verma G, Aswal VK, Patravale V, Hassan PA. Microstructure, drug binding and cytotoxicity of Pluronic P123–aerosol OT mixed micelles. RSC Adv 2013. [DOI: 10.1039/c3ra44983a] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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Yaremko ZM, Burka OA, Fedushinskaya LB, Soltys MN. Intermolecular interactions of polymethacrylic acid with nonylphenoxypoly(ethoxy)ethanol in water solutions. RUSS J GEN CHEM+ 2012. [DOI: 10.1134/s1070363212090174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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40
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Yaremko ZM, Burka OA, Fedushinskaya LB, Soltys MN. Intermolecular interactions of polymethacrylic acid with N-alkyl-1,3-propanediamine. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2012. [DOI: 10.1134/s003602441202032x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Nambam JS, Philip J. Effects of Interaction of Ionic and Nonionic Surfactants on Self-Assembly of PEO–PPO–PEO Triblock Copolymer in Aqueous Solution. J Phys Chem B 2012; 116:1499-507. [DOI: 10.1021/jp208902a] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J. S. Nambam
- SMARTS, NDED, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam
603 102, Tamilnadu, India
| | - John Philip
- SMARTS, NDED, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam
603 102, Tamilnadu, India
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Manet S, Lecchi A, Impéror-Clerc M, Zholobenko V, Durand D, Oliveira CLP, Pedersen JS, Grillo I, Meneau F, Rochas C. Structure of Micelles of a Nonionic Block Copolymer Determined by SANS and SAXS. J Phys Chem B 2011; 115:11318-29. [DOI: 10.1021/jp200212g] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sabine Manet
- Laboratoire de Physique de Solides, UMR 8502, Bât. 510, Université Paris-Sud, F-91405 Orsay, France
| | - Amélie Lecchi
- Laboratoire de Physique de Solides, UMR 8502, Bât. 510, Université Paris-Sud, F-91405 Orsay, France
| | - Marianne Impéror-Clerc
- Laboratoire de Physique de Solides, UMR 8502, Bât. 510, Université Paris-Sud, F-91405 Orsay, France
| | - Vladimir Zholobenko
- Chemistry Department, Keele University, Staffordshire, ST5 5BG, United Kingdom
| | - Dominique Durand
- Institut de Biochimie et de Biophysique Moléculaire et Cellulaire, Bât. 430, Université Paris-Sud, F-91405 Orsay, France
| | - Cristiano L. P. Oliveira
- Department of Chemistry and iNANO Interdisciplinary Nanoscience Center, Århus University, DK-8000 Århus, Denmark
| | - Jan Skov Pedersen
- Department of Chemistry and iNANO Interdisciplinary Nanoscience Center, Århus University, DK-8000 Århus, Denmark
| | | | - Florian Meneau
- SWING, Synchrotron Soleil, BP 48, F-91192 Gif-sur-Yvette, France
| | - Cyrille Rochas
- D2AM, ESRF, 6 rue Jules Horowitz, F-38000 Grenoble, France
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44
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Phani Kumar B, Umayal Priyadharsini S, Prameela G, Mandal AB. NMR investigations of self-aggregation characteristics of SDS in a model assembled tri-block copolymer solution. J Colloid Interface Sci 2011; 360:154-62. [DOI: 10.1016/j.jcis.2011.04.008] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2010] [Revised: 03/29/2011] [Accepted: 04/07/2011] [Indexed: 11/25/2022]
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Lee SJ, Koo H, Lee DE, Min S, Lee S, Chen X, Choi Y, Leary JF, Park K, Jeong SY, Kwon IC, Kim K, Choi K. Tumor-homing photosensitizer-conjugated glycol chitosan nanoparticles for synchronous photodynamic imaging and therapy based on cellular on/off system. Biomaterials 2011; 32:4021-9. [PMID: 21376388 DOI: 10.1016/j.biomaterials.2011.02.009] [Citation(s) in RCA: 121] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Accepted: 02/04/2011] [Indexed: 10/18/2022]
Abstract
Herein, we developed the photosensitizer, protoporphyrin IX (PpIX), conjugated glycol chitosan (GC) nanoparticles (PpIX-GC-NPs) as tumor-homing drug carriers with cellular on/off system for photodynamic imaging and therapy, simultaneously. In order to prepare PpIX-GC-NPs, hydrophobic PpIXs were chemically conjugated to GC polymer and the amphiphilic PpIX-GC conjugates formed a stable nanoparticle structure in aqueous condition, wherein conjugated PpIX molecules formed hydrophobic inner-cores and they were covered by the hydrophilic GC polymer shell. Based on the nanoparticle structure, PpIX-GC-NPs showed the self-quenching effect that is 'off' state with no fluorescence signal and phototoxicity with light exposure. It is due to the compact crystallized PpIX molecules in the nanoparticles as confirmed by dynamic light scattering and X-ray diffraction methods. However, after cellular uptake, compact nanoparticle structure gradually decreased to generate strong fluorescence signal and singlet oxygen generation when irradiated. Importantly, PpIX-GC-NPs-treated mice presented prolonged blood circulation, enhanced tumor targeting ability, and improved in vivo therapeutic efficiency in tumor-bearing mice, compared to that of free PpIX-treated mice. These results proved that this tumor-homing cellular 'on/off' nanoparticle system of PpIX-GC-NPs has a great potential for synchronous photodynamic imaging and therapy in cancer treatment.
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Affiliation(s)
- So Jin Lee
- Biomedical Research Center, Korea Institute of Science and Technology, 39-1 Hawolgok-dong, Seongbuk-gu, Seoul 136-791, South Korea
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Kumbhakar M, Dey S, Singh PK, Nath S, Satpati AK, Gangully R, Aswal VK, Pal H. Tuning of Intermolecular Electron Transfer Reaction by Modulating the Microenvironment Inside Copolymer−Surfactant Supramolecular Assemblies. J Phys Chem B 2011; 115:1638-51. [DOI: 10.1021/jp109217v] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
| | - Swayandipta Dey
- Chemistry Department, Pondicherry University, Kalapet, Pondicherry 605014, India
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Portnaya I, Khalfin R, Kesselman E, Ramon O, Cogan U, Danino D. Mixed micellization between natural and synthetic block copolymers: β-casein and Lutrol F-127. Phys Chem Chem Phys 2011; 13:3153-60. [DOI: 10.1039/c0cp01321h] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Li F, de Wolf FA, Marcelis ATM, Sudhölter EJR, Cohen Stuart MA, Leermakers FAM. Triggered Templated Assembly of Protein Polymersomes. Angew Chem Int Ed Engl 2010; 49:9947-50. [DOI: 10.1002/anie.201004003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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49
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Li F, de Wolf FA, Marcelis ATM, Sudhölter EJR, Cohen Stuart MA, Leermakers FAM. Triggered Templated Assembly of Protein Polymersomes. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201004003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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50
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Kadam Y, Bharatiya B, Hassan P, Verma G, Aswal V, Bahadur P. Effect of an amphiphilic diol (Surfynol®) on the micellar characteristics of PEO–PPO–PEO block copolymers in aqueous solutions. Colloids Surf A Physicochem Eng Asp 2010. [DOI: 10.1016/j.colsurfa.2010.04.025] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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