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Patel D, Tripathi N, Vaswani P, Pérez-Sánchez G, Bhatia D, Kuperkar K, Coutinho JAP, Bahadur P. Role of Unimers to Polymersomes Transition in Pluronic Blends for Controlled and Designated Drug Conveyance. J Phys Chem B 2024; 128:6151-6166. [PMID: 38845485 DOI: 10.1021/acs.jpcb.4c00561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
This study investigates the nanoscale self-assembly from mixtures of two symmetrical poly(ethylene oxide)-poly(propylene oxide)-pol(ethylene oxide) (PEO-PPO-PEO) block copolymers (BCPs) with different lengths of PEO blocks and similar PPO blocks. The blended BCPs (commercially known as Pluronic F88 and L81, with 80 and 10% PEO, respectively) exhibited rich phase behavior in an aqueous solution. The relative viscosity (ηrel) indicated significant variations in the flow behavior, ranging from fluidic to viscous, thereby suggesting a possible micellar growth or morphological transition. The tensiometric experiments provided insight into the intermolecular hydrophobic interactions at the liquid-air interface favoring the surface activity of mixed-system micellization. Dynamic light scattering (DLS) and small-angle neutron scattering (SANS) revealed the varied structural morphologies of these core-shell mixed micelles and polymersomes formed under different conditions. At a concentration of ≤5% w/v, Pluronic F88 exists as molecularly dissolved unimers or Gaussian chains. However, the addition of the very hydrophobic Pluronic L81, even at a much lower (<0.2%) concentration, induced micellization and promoted micellar growth/transition. These results were further substantiated through molecular dynamics (MD) simulations, employing a readily transferable coarse-grained (CG) molecular model grounded in the MARTINI force field with density and solvent-accessible surface area (SASA) profiles. These findings proved that F88 underwent micellar growth/transition in the presence of L81. Furthermore, the potential use of these Pluronic mixed micelles as nanocarriers for the anticancer drug quercetin (QCT) was explored. The spectral analysis provided insight into the enhanced solubility of QCT through the assessment of the standard free energy of solubilization (ΔG°), drug-loading efficiency (DL%), encapsulation efficiency (EE%), and partition coefficient (P). A detailed optimization of the drug release kinetics was presented by employing various kinetic models. The [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] MTT assay, a frequently used technique for assessing cytotoxicity in anticancer research, was used to gauge the effectiveness of these QCT-loaded mixed nanoaggregates.
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Affiliation(s)
- Divya Patel
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat 395 007, Gujarat, India
| | - Nitumani Tripathi
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat 395 007, Gujarat, India
| | - Payal Vaswani
- Biomedical Engineering, Indian Institute of Technology Gandhinagar (IITGn), Palaj, Gandhinagar 382 355, Gujarat, India
| | - Germán Pérez-Sánchez
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Aveiro 3810-1933, Portugal
| | - Dhiraj Bhatia
- Biomedical Engineering, Indian Institute of Technology Gandhinagar (IITGn), Palaj, Gandhinagar 382 355, Gujarat, India
| | - Ketan Kuperkar
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat 395 007, Gujarat, India
| | - João A P Coutinho
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Aveiro 3810-1933, Portugal
| | - Pratap Bahadur
- Department of Chemistry, Veer Narmad South Gujarat University (VNSGU), Udhana-Magdalla Road, Surat 395 007, Gujarat, India
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Zheng C, Chen Y, Chen F. Acrylamide-induced enhanced solubilization of poly(propylene glycol) in aqueous solution. SOFT MATTER 2023; 19:9092-9100. [PMID: 37987245 DOI: 10.1039/d3sm01362f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Acrylamide (AM)-induced enhanced solubilization of poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) (PEO-PPO-PEO) has been phenomenologically reported in a previous study. However, little is known about its mechanism. In this study, poly(propylene glycol) (PPG) serves as a model system to clarify this enhanced solubilization phenomenon, driven by two specific reasons. First, it helps eliminate any interference from PEO segments. Second, the liquid state of low molecular weight PPG proves advantageous for characterizing molecular interactions. The phenomenon of AM-induced enhanced solubilization has been conclusively demonstrated in the PPG system for the first time. Addition of AM consistently raises the cloud point of PPG aqueous solution. Subsequently, the structure and molecular interactions within the PPG/AM aqueous solution were investigated. Notably, there is no robust association or hydrogen bond between PPG and AM molecules; instead, only van der Waals forces are found to be at play. A model has been constructed, grounded in the contacts between PPG and the solvent during the coil-to-globule transition, to better understand the observed impact of AM on the clouding behavior of PPG aqueous solutions. The mechanism behind the enhanced solubilization has been ascribed to AM's ability to contact with PPG during the temperature-induced dehydration process, thereby assisting in sustaining the PPG's dissolved state.
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Affiliation(s)
- Chao Zheng
- Department of Applied Chemistry, College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, P. R. China.
| | - Yanlin Chen
- Department of Applied Chemistry, College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, P. R. China.
| | - Feng Chen
- Department of Applied Chemistry, College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, P. R. China.
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Bhalani D, Kakkad H, Modh J, Ray D, Aswal VK, Pillai SA. Molecular insights into the aggregation and solubilizing behavior of biocompatible amphiphiles Gelucire® 48/16 and Tetronics® 1304 in aqueous media. RSC Adv 2023; 13:28590-28601. [PMID: 37780735 PMCID: PMC10540152 DOI: 10.1039/d3ra04844f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 09/21/2023] [Indexed: 10/03/2023] Open
Abstract
A comparative analysis of the micellar and solubilizing properties of two polyethylene glycol (PEG)-based amphiphilic biocompatible excipients: Gelucire® 48/16 (Ge 48/16) and Tetronics® 1304 (T1304), in the presence and absence of salt, was conducted. As there is a dearth of research in this area, the study aims to shed light on the behavior of these two nonionic surfactants and their potential as nanocarriers for solubilizing pharmaceuticals. Various techniques such as cloud point (CP), dynamic light scattering (DLS), small-angle neutron scattering (SANS), Fourier transform infrared spectroscopy (FT-IR), UV spectrophotometry, and high-performance liquid chromatography (HPLC) were employed. The solubility of quercetin (QCT), a flavonoid with anti-inflammatory, antioxidant, and anti-cancer properties, was evaluated and the interaction between QCT and the micellar system was examined. The analysis revealed the occurrence of strong interactions between QCT and surfactant molecules, resulting in enhanced solubility. It was observed that the micellar size and solubilizing ability were significantly improved in the presence of salt, while the CP decreased. Ge 48/16 exhibited superior performance, with a remarkable increase in the solubility of QCT in the presence of salt, suggesting its potential as an effective nanocarrier for a range of pharmaceutics, and yielding better therapeutic outcomes.
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Affiliation(s)
- Deep Bhalani
- School of Sciences, P. P. Savani University NH-8, GETCO, Near Biltech, Kosamba Surat 394125 Gujarat India
| | - Hiral Kakkad
- School of Sciences, P. P. Savani University NH-8, GETCO, Near Biltech, Kosamba Surat 394125 Gujarat India
| | - Jignasa Modh
- School of Sciences, P. P. Savani University NH-8, GETCO, Near Biltech, Kosamba Surat 394125 Gujarat India
| | - Debes Ray
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC) Mumbai 400085 Maharashtra India
- Biomacromolecular Systems and Processes, Institute of Biological Information Processing, Forschungszentrum Jülich Jülich 52428 Germany
| | - Vinod K Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC) Mumbai 400085 Maharashtra India
| | - Sadafara A Pillai
- School of Sciences, P. P. Savani University NH-8, GETCO, Near Biltech, Kosamba Surat 394125 Gujarat India
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Self-assembly and drug release mechanisms of mechano-responsive and antibacterial F127-Rif hydrogels. Macromol Res 2023. [DOI: 10.1007/s13233-023-00126-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Patel D, Pérez-Sánchez G, Jorge M, Ray D, Aswal VK, Kuperkar K, Coutinho JAP, Bahadur P. Rationalizing the Design of Pluronics-Surfactant Mixed Micelles through Molecular Simulations and Experiments. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:2692-2709. [PMID: 36763753 DOI: 10.1021/acs.langmuir.2c03176] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Aqueous systems comprising polymers and surfactants are technologically important complex fluids with tunable features dependent on the chemical nature of each constituent, overall composition in mixed systems, and solution conditions. The phase behavior and self-assembly of amphiphilic polymers can be changed drastically in the presence of conventional ionic surfactants and need to be clearly understood. Here, the self-aggregation dynamics of a triblock copolymer (Pluronics L81, EO3PO43EO3) in the presence of three cationic surfactants (with a 12C long alkyl chain but with different structural features), viz., dodecyltrimethylammonium bromide (DTAB), didodecyldimethylammonium bromide (DDAB), and ethanediyl-1,2-bis(dimethyldodecylammonium bromide) (12-2-12), were investigated in an aqueous solution environment. The nanoscale micellar size expressed as hydrodynamic diameter (Dh) of copolymer-surfactant mixed aggregates was evaluated using dynamic light scattering, while the presence of a varied micellar geometry of L81-cationic surfactant mixed micelles were probed using small-angle neutron scattering. The obtained findings were further validated from molecular dynamics (MD) simulations, employing a simple and transferable coarse-grained molecular model based on the MARTINI force field. L81 remained molecularly dissolved up to ∼20 °C but phase separated, forming turbid/translucent dispersion, close to its cloud point (CP) and existed as unstable vesicles. However, it exhibited interesting solution behavior expressed in terms of the blue point (BP) and the double CP in the presence of different surfactants, leading to mixed micellar systems with a triggered morphology transition from unstable vesicles to polymer-rich micelles and cationic surfactant-rich micelles. Such an amendment in the morphology of copolymer nanoaggregates in the presence of cationic surfactants has been well observed from scattering data. This is further rationalized employing the MD approach, which validated the effective interactions between Pluronics-cationic surfactant mixed micelles. Thus, our experimental results integrated with MD yield a deep insight into the nanoscale interactions controlling the micellar aggregation (Pluronics-rich micelles and surfactant-rich micelles) in the investigated mixed system.
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Affiliation(s)
- Divya Patel
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat, Gujarat 395 007, India
| | - Germán Pérez-Sánchez
- CICECO─Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Aveiro 3810-1933, Portugal
| | - Miguel Jorge
- Department of Chemical and Process Engineering, University of Strathclyde, 75 Montrose Street, Glassgow G1 1XJ, U.K
| | - Debes Ray
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC), Trombay, Mumbai, Maharashtra 400 085, India
- Biomacromolecular Systems and Processes, Institute of Biological Information Processing, Forschungszentrum Julich, Julich 52428, Germany
| | - Vinod K Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC), Trombay, Mumbai, Maharashtra 400 085, India
| | - Ketan Kuperkar
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat, Gujarat 395 007, India
| | - João A P Coutinho
- CICECO─Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Aveiro 3810-1933, Portugal
| | - Pratap Bahadur
- Department of Chemistry, Veer Narmad South Gujarat University (VNSGU), Udhana-Magdalla Road, Surat, Gujarat 395 007, India
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Surfactant and Block Copolymer Nanostructures: From Design and Development to Nanomedicine Preclinical Studies. Pharmaceutics 2023; 15:pharmaceutics15020501. [PMID: 36839826 PMCID: PMC9963006 DOI: 10.3390/pharmaceutics15020501] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/21/2022] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
The medical application of nanotechnology in the field of drug delivery has so far exhibited many efforts in treating simple to extremely complicated and life-threatening human conditions, with multiple products already existing in the market. A plethora of innovative drug delivery carriers, using polymers, surfactants and the combination of the above, have been developed and tested pre-clinically, offering great advantages in terms of targeted drug delivery, low toxicity and immune system activation, cellular biomimicry and enhanced pharmacokinetic properties. Furthermore, such artificial systems can be tailor-made with respect to each therapeutic protocol and disease type falling under the scope of personalized medicine. The simultaneous delivery of multiple therapeutic entities of different nature, such as genes and drugs, can be achieved, while novel technologies can offer systems with multiple modalities often combining therapy with diagnosis. In this review, we present prominent, innovative and state-of-the-art scientific efforts on the applications of surfactant-based, polymer-based, and mixed surfactant-polymer nanoparticle drug formulations intended for use in the medical field and in drug delivery. The materials used, formulation steps, nature, properties, physicochemical characteristics, characterization techniques and pharmacokinetic behavior of those systems, are presented extensively in the length of this work. The material presented is focused on research projects that are currently in the developmental, pre-clinical stage.
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Physicochemical properties of piroxicam in ionic-mixed micellar medium: effect of charge on the micellization behaviour. Colloid Polym Sci 2022. [DOI: 10.1007/s00396-022-05027-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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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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Pal T, Sahu K. Comparison of interaction patterns of a triblock copolymer micelle with zwitterionic vs. cationic surfactant: An excited-state proton transfer dynamics investigation. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Patel D, Rathod S, Tiwari S, Ray D, Kuperkar K, Aswal VK, Bahadur P. Self-Association in EO-BO-EO Triblock Copolymers as a Nanocarrier Template for Sustainable Release of Anticancer Drugs. J Phys Chem B 2020; 124:11750-11761. [PMID: 33305575 DOI: 10.1021/acs.jpcb.0c09386] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Ethylene oxide (EO)-butylene oxide (BO)-ethylene oxide (EO)-based triblock copolymers with varying hydrophilic-hydrophobic ratios in arrangement, generally referred to as EBE, were scrutinized in an aqueous environment. Various self-associative (micellization) physicochemical properties of these EBEs were examined at different temperatures unified with a quantum chemical study. The salting-out effect on 5%w/v EBE was examined by observing their aqueous solution behavior where the clear transparent solution/turbidity suggested the probable presence of spherical or ellipsoidal micelles, which was confirmed from the scattering outline. The hydrodynamic radius (Dh) of the formed micellar geometry as a function of temperature and electrolyte (2 M NaCl) was inspected from dynamic light scattering and further supported by small-angle neutron scattering, where the Q-range prototype and scattering parameters were evaluated by the best fitting of the structure factor. Furthermore, these micelles were employed as potential nanocarriers for anticancer (curcumin and quercetin) drugs, where its release profile at a particular time interval was estimated using UV-vis spectroscopy. Different kinetic models were employed to fit the release profile data that enabled this study to act as an ideal platform for drug delivery. Also, the plausible interactions between EO-BO-EO blocks and the anticancer drugs were inferred from the evaluated computational descriptors.
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Affiliation(s)
- Dhruvi Patel
- Applied Chemistry Department, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat 395 007, Gujarat, India
| | - Sachin Rathod
- Maliba Pharmacy College, UKA Tarsadia University (UTU), Gopal-Vidyanagar Campus, Surat 394 350, Gujarat, India
| | - Sanjay Tiwari
- Maliba Pharmacy College, UKA Tarsadia University (UTU), Gopal-Vidyanagar Campus, Surat 394 350, Gujarat, India
| | - Debes Ray
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC), Trombay, Mumbai 400 085, Maharashtra, India
| | - Ketan Kuperkar
- Applied Chemistry Department, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat 395 007, Gujarat, India
| | - Vinod K Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC), Trombay, Mumbai 400 085, Maharashtra, India
| | - Pratap Bahadur
- Department of Chemistry, Veer Narmad South Gujarat University (VNSGU), Udhana-Magdalla Road, Surat 395 007, Gujarat, India
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