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Kumar V, Poonia N, Kumar P, Kumar Verma P, Alshammari A, Albekairi NA, Kabra A, Yadav N. Amphiphilic, lauric acid-coupled pluronic-based nano-micellar system for efficient glipizide delivery. Saudi Pharm J 2024; 32:102046. [PMID: 38577487 PMCID: PMC10992704 DOI: 10.1016/j.jsps.2024.102046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Accepted: 03/20/2024] [Indexed: 04/06/2024] Open
Abstract
Glipizide; an insulin secretagogue belonging to the sulfonylurea class, is a widely used antidiabetic drug for managing type 2 diabetes. However, the need for life-long administration and repeated doses poses challenges in maintaining optimal blood glucose levels. In this regard, orally active sustained-release nano-formulations can be a better alternative to traditional antidiabetic formulations. The present study explored an innovative approach by formulating orally active sustained-release nano-micelles using the amphiphilic lauric acid-conjugated-F127 (LAF127) block copolymer. LAF127 block copolymer was synthesized through esterification and thoroughly characterized before being employed to develop glipizide-loaded nano-micelles (GNM) via the thin-film hydration technique. The optimized formulation exhibited mean particle size of 341.40 ± 3.21 nm and depicted homogeneous particle size distribution with a polydispersity index (PDI) < 0.2. The formulation revealed a surface charge of -17.11 ± 6.23 mV. The in vitro release studies of glipizide from developed formulation depicted a sustained release profile. Drug loaded micelles exhibited a substantial reduction in blood glucose levels in diabetic rats for a duration of up to 24 h. Notably, neither the blank nano-micelles of LAF127 nor the drug loaded micelles manifested any indications of toxicity in healthy rats. This study provides an insight on suitability of synthesized LAF127 block copolymer for development of effective oral drug delivery systems for anti-diabetic activity without any significant adverse effects.
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Affiliation(s)
- Vipan Kumar
- Department of Pharmaceutical Chemistry, JCDM College of Pharmacy, Sirsa 125055, India
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak 124001, India
| | - Neelam Poonia
- University Institute of Pharma Sciences, Chandigarh University, Gharuan, Mohali, Punjab, India
| | - Pradeep Kumar
- Wits Advanced Drug Delivery Platform (WADDP) Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
| | - Prabhakar Kumar Verma
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak 124001, India
| | - Abdulrahman Alshammari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Post Box 2455, Riyadh 11451, Saudi Arabia
| | - Norah A. Albekairi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Post Box 2455, Riyadh 11451, Saudi Arabia
| | - Atul Kabra
- University Institute of Pharma Sciences, Chandigarh University, Gharuan, Mohali, Punjab, India
| | - Neera Yadav
- School of Medicine, Kyung Hee University, Dongdaemun-gu, Seoul 02447, Republic of Korea
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2
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Hua W, Zhang C, Raymond L, Mitchell K, Wen L, Yang Y, Zhao D, Liu S, Jin Y. 3D printing-based full-scale human brain for diverse applications. BRAIN-X 2023; 1:e5. [PMID: 37818250 PMCID: PMC10564551 DOI: 10.1002/brx2.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/12/2023]
Abstract
Surgery is the most frequent treatment for patients with brain tumors. The construction of full-scale human brain models, which is still challenging to realize via current manufacturing techniques, can effectively train surgeons before brain tumor surgeries. This paper aims to develop a set of three-dimensional (3D) printing approaches to fabricate customized full-scale human brain models for surgery training as well as specialized brain patches for wound healing after surgery. First, a brain patch designed to fit a wound's shape and size can be easily printed in and collected from a stimuli-responsive yield-stress support bath. Then, an inverse 3D printing strategy, called "peeling-boiled-eggs," is proposed to fabricate full-scale human brain models. In this strategy, the contour layer of a brain model is printed using a sacrificial ink to envelop the target brain core within a photocurable yield-stress support bath. After crosslinking the contour layer, the as-printed model can be harvested from the bath to photo crosslink the brain core, which can be eventually released by liquefying the contour layer. Both the brain patch and full-scale human brain model are successfully printed to mimic the scenario of wound healing after removing a brain tumor, validating the effectiveness of the proposed 3D printing approaches.
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Affiliation(s)
- Weijian Hua
- Department of Mechanical Engineering, University of Nevada Reno, Reno, Nevada, USA
| | - Cheng Zhang
- Department of Mechanical Engineering, University of Nevada Reno, Reno, Nevada, USA
- School of Mechanical Engineering, Dalian University of Technology, Dalian, Liaoning, China
| | - Lily Raymond
- Department of Mechanical Engineering, University of Nevada Reno, Reno, Nevada, USA
| | - Kellen Mitchell
- Department of Mechanical Engineering, University of Nevada Reno, Reno, Nevada, USA
| | - Lai Wen
- Department of Pharmacology, Center for Molecular and Cellular Signaling in the Cardiovascular System, School of Medicine, University of Nevada, Reno, Nevada, USA
| | - Ying Yang
- Department of Chemistry, University of Nevada Reno, Reno, Nevada, USA
| | - Danyang Zhao
- School of Mechanical Engineering, Dalian University of Technology, Dalian, Liaoning, China
| | - Shu Liu
- Department of Gerontology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yifei Jin
- Department of Mechanical Engineering, University of Nevada Reno, Reno, Nevada, USA
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Hua W, Mitchell K, Kariyawasam LS, Do C, Chen J, Raymond L, Valentin N, Coulter R, Yang Y, Jin Y. Three-Dimensional Printing in Stimuli-Responsive Yield-Stress Fluid with an Interactive Dual Microstructure. ACS APPLIED MATERIALS & INTERFACES 2022; 14:39420-39431. [PMID: 35973232 DOI: 10.1021/acsami.2c12465] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Yield-stress support bath-enabled three-dimensional (3D) printing has been widely used in recent years for diverse applications. However, current yield-stress fluids usually possess single microstructures and still face the challenges of on-demand adding and/or removing support bath materials during printing, constraining their application scope. This study aims to propose a concept of stimuli-responsive yield-stress fluids with an interactive dual microstructure as support bath materials. The microstructure from a yield-stress additive allows the fluids to present switchable states at different stresses, facilitating an embedded 3D printing process. The microstructure from stimuli-responsive polymers enables the fluids to have regulable rheological properties upon external stimuli, making it feasible to perfuse additional yield-stress fluids during printing and easily remove residual fluids after printing. A nanoclay-Pluronic F127 nanocomposite is studied as a thermosensitive yield-stress fluid. The key material properties are characterized to unveil the interactions in the formed dual microstructure and microstructure evolutions at different stresses and temperatures. Core scientific issues, including the filament formation principle, surface roughness control, and thermal effects of the newly added nanocomposite, are comprehensively investigated. Finally, three representative 3D structures, the Hall of Prayer, capsule, and tube with changing diameter, are successfully printed to validate the printing capability of stimuli-responsive yield-stress fluids for fabricating arbitrary architectures.
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Affiliation(s)
- Weijian Hua
- Department of Mechanical Engineering, University of Nevada Reno, Reno, Nevada 89557, United States
| | - Kellen Mitchell
- Department of Mechanical Engineering, University of Nevada Reno, Reno, Nevada 89557, United States
| | - Lasith S Kariyawasam
- Department of Chemistry, University of Nevada Reno, Reno, Nevada 89557, United States
| | - Changwoo Do
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Jihua Chen
- Center for Nanophase Materials Sciences, Oak Ridge National Lab, Oak Ridge, Tennessee 37830, United States
| | - Lily Raymond
- Department of Mechanical Engineering, University of Nevada Reno, Reno, Nevada 89557, United States
| | - Naima Valentin
- Department of Mechanical Engineering, University of Nevada Reno, Reno, Nevada 89557, United States
| | - Ryan Coulter
- Department of Mechanical Engineering, University of Nevada Reno, Reno, Nevada 89557, United States
| | - Ying Yang
- Department of Chemistry, University of Nevada Reno, Reno, Nevada 89557, United States
| | - Yifei Jin
- Department of Mechanical Engineering, University of Nevada Reno, Reno, Nevada 89557, United States
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4
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Li L, Zhang C, Xu L, Ye C, Chen S, Wang X, Song Y. Luminescence Ratiometric Nanothermometry Regulated by Tailoring Annihilators of Triplet–Triplet Annihilation Upconversion Nanomicelles. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Lin Li
- School of Materials Science and Engineering Suzhou University of Science and Technology Suzhou 215009 P. R. China
| | - Chun Zhang
- School of Materials Science and Engineering Suzhou University of Science and Technology Suzhou 215009 P. R. China
| | - Lei Xu
- School of Materials Science and Engineering Suzhou University of Science and Technology Suzhou 215009 P. R. China
| | - Changqing Ye
- School of Materials Science and Engineering Suzhou University of Science and Technology Suzhou 215009 P. R. China
| | - Shuoran Chen
- School of Materials Science and Engineering Suzhou University of Science and Technology Suzhou 215009 P. R. China
| | - Xiaomei Wang
- School of Materials Science and Engineering Suzhou University of Science and Technology Suzhou 215009 P. R. China
| | - Yanlin Song
- Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
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5
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Li L, Zhang C, Xu L, Ye C, Chen S, Wang X, Song Y. Luminescence Ratiometric Nanothermometry Regulated by Tailoring Annihilators of Triplet-Triplet Annihilation Upconversion Nanomicelles. Angew Chem Int Ed Engl 2021; 60:26725-26733. [PMID: 34623016 DOI: 10.1002/anie.202110830] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Indexed: 11/07/2022]
Abstract
Triplet-triplet annihilation (TTA) upconversion is a special non-linear photophysical process that converts low-energy photons into high-energy photons based on sensitizer/annihilator pairs. Here, we constructed a novel luminescence ratiometric nanothermometer based on TTA upconversion nanomicelles by encapsulating sensitizer/annihilator molecules into a temperature-sensitive amphiphilic triblock polymer and obtained good linear relationships between the luminescence ratio (integrated intensity ratio of upconverted luminescence peak to the downshifted phosphorescence peak) and the temperature. We also found chemical modification of annihilators would rule out the interference of the polymer concentration and stereochemical engineering of annihilators would readily regulate the thermal sensitivity.
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Affiliation(s)
- Lin Li
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China
| | - Chun Zhang
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China
| | - Lei Xu
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China
| | - Changqing Ye
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China
| | - Shuoran Chen
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China
| | - Xiaomei Wang
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China
| | - Yanlin Song
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
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Shaikh S, Patel H, Ray D, Aswal VK, Sharma RK. Mixed Poloxamer Nanomicelles for the Anticonvulsant Lamotrigine Drug: Solubility, Micellar Characterization, and In-Vitro Release Studies. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2021; 21:5723-5735. [PMID: 33980386 DOI: 10.1166/jnn.2021.19490] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Recently the applications of Poloxamers in drug development is promising as it facilitated the drug molecule for delivering to the correct place, at the correct time and in the correct amount. Poloxamers can form nanomicelles to encapsulate hydrophobic drugs in order to increase solubility, stability and facilitate delivery at target. In this context, the solubilization of anticonvulsant lamotrigine (LMN) drug in a chain of Poloxamers containing different polyethylene oxide and polypropylene oxide noieties were examined. The results showed better solubilization of LMN in Poloxamers contain low CMTs while poor with Poloxamers having high CMTs. Systematic investigation of two mixed Poloxamer nanomicelles (P407:P403 and P407:P105) for LMN bioavailability at body temperature (37 °C) were investigated. The solubility of LMN was enhanced in mixed P407:P403 nanomicelles with the amount of P403 and reduced in mixed P407:P105 nanomicelles with the amount of P105. LMN encapsulated mixed Poloxamer nanomicelles were found spherical in shape with ~25 nm Dh sizes. The In-Vitro release profiles of mixed Poloxamer nanomicelles demonstrated the biphasic model with initial burst release and then slowly release of LMN. Better biocompatibility of LMN in the mixed P407:P403 nanomicelles was confirmed with stability data. The results of this work were proven the mixed P407:P403 nanomicelles as efficient nanocarriers for LMN.
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Affiliation(s)
- Sofiya Shaikh
- Applied Chemistry Department, Faculty of Technology and Engineering, The Maharaja Sayajirao University of Baroda, Vadodara 390001, Gujarat, India
| | - Hemil Patel
- Applied Chemistry Department, Faculty of Technology and Engineering, The Maharaja Sayajirao University of Baroda, Vadodara 390001, Gujarat, India
| | - Debes Ray
- State Physics Division, Bhabha Atomic Research Centre (BARC), Mumbai 400085, Maharashtra, India
| | - Vinod K Aswal
- State Physics Division, Bhabha Atomic Research Centre (BARC), Mumbai 400085, Maharashtra, India
| | - Rakesh K Sharma
- Applied Chemistry Department, Faculty of Technology and Engineering, The Maharaja Sayajirao University of Baroda, Vadodara 390001, Gujarat, India
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Shaikh SJ, Patel HS, Ray D, Aswal VK, Singh S, Vijayvargia R, Sheth U, Sharma RK. Enhanced Solubility and Oral Bioavailability of Hydrophobic Drugs Using Pluronic Nanomicelles: An In‐Vitro Evaluation. ChemistrySelect 2021. [DOI: 10.1002/slct.202102123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sofiya J. Shaikh
- Applied Chemistry Department Faculty of Technology and Engineering The Maharaja Sayajirao University of Baroda Vadodara 390001 Gujarat India
| | - Hemil S. Patel
- Applied Chemistry Department Faculty of Technology and Engineering The Maharaja Sayajirao University of Baroda Vadodara 390001 Gujarat India
| | - Debes Ray
- Solid State Physics Division Bhabha Atomic Research Centre Mumbai Maharashtra India
| | - Vinod K. Aswal
- Solid State Physics Division Bhabha Atomic Research Centre Mumbai Maharashtra India
| | - Sushmita Singh
- Department of Biochemistry Faculty of Science The Maharaja Sayajirao University of Baroda Vadodara 390001 Gujarat India
| | - Ravi Vijayvargia
- Department of Biochemistry Faculty of Science The Maharaja Sayajirao University of Baroda Vadodara 390001 Gujarat India
| | - Urjita Sheth
- C. G. Bhakta Institute of Biotechnology UkaTarsadia University Bardoli Gujarat India
| | - Rakesh K. Sharma
- Applied Chemistry Department Faculty of Technology and Engineering The Maharaja Sayajirao University of Baroda Vadodara 390001 Gujarat India
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8
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Solis-Gonzalez OA, Avendaño-Gómez JR, Rojas-Aguilar A. A thermodynamic study of F108 and F127 block copolymer interactions with liposomes at physiological temperature. J Liposome Res 2021; 32:32-44. [PMID: 33322974 DOI: 10.1080/08982104.2020.1865401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The interactions of egg yolk phosphatidylcholine liposomes with F108 and F127 triblock copolymers, in the monomer state, were analyzed by isothermal titration calorimetry (ITC) at 37 °C. According to the results, the critical micelle concentration was determined to be 0.4 and 0.04 wt.% for F108 and F127, respectively, by surface tension at 37 °C. According to the results, liposomes/poloxamers were not favoured energetically, since endothermic interactions were observed. However, positive changes in entropy promoted a spontaneous process. F127 had a greater partition coefficient (51.97 ± 1.77 × 104), stronger affinity, than F108 (8.19 ± 0.37 × 104) towards the vesicle lipid bilayer due to its larger hydrophobic block. After the ITC experiments, an increased vesicle size (within about 1-3 nm average) by dynamic light scattering and the formation of bilayer discs by electron microscopy (EM) was observed at low copolymer concentrations (0.57 mol% of F108 and 1.01 mol% of F127). The EM and ITC results confirmed the intimate association of the copolymers with the membrane instead of being simply absorbed onto the bilayer surface. Our results indicate that the temperature of the system (37 °C), the copolymer concentration and hydrophobic chain length are important factors for the interaction of poloxamers with lipid bilayers and the stability of liposomes.
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Affiliation(s)
- Obed Andres Solis-Gonzalez
- Sección de Estudios de Posgrado e Investigación, Escuela Superior de Ingeniería Química e Industrias Extractivas, Instituto Politécnico Nacional, Ciudad de México, México
| | - Juan Ramon Avendaño-Gómez
- Sección de Estudios de Posgrado e Investigación, Escuela Superior de Ingeniería Química e Industrias Extractivas, Instituto Politécnico Nacional, Ciudad de México, México
| | - Aarón Rojas-Aguilar
- Departamento de Química, Centro de Investigación y Estudios Avanzados del IPN, Ciudad de México, México
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da Silva JB, Dos Santos RS, da Silva MB, Braga G, Cook MT, Bruschi ML. Interaction between mucoadhesive cellulose derivatives and Pluronic F127: Investigation on the micelle structure and mucoadhesive performance. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 119:111643. [PMID: 33321681 DOI: 10.1016/j.msec.2020.111643] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/15/2020] [Accepted: 10/15/2020] [Indexed: 01/10/2023]
Abstract
Systems composed of bioadhesive and thermoresponsive polymers can combine in situ gelation with bio/mucoadhesion, enhancing retention of topically applied drugs. The effect of bioadhesive sodium carboxymethylcellulose (NaCMC) and hydroxypropyl methylcellulose cellulose (HPMC) on the properties of thermoresponsive Pluronic® F127 (F127) was explored, including micellization and the mucoadhesion. A computational analysis between these polymers and their molecular interactions were also studied, rationalising the design of improved binary polymeric systems for pharmaceutical and biomedical applications. The morphological characterization of polymeric systems was conducted by SEM. DSC analysis was used to investigate the crystallization and micellization enthalpy of F127 and the mixed systems. Micelle size measurements and TEM micrographs allowed for investigation into the interference of cellulose derivatives on F127 micellization. Both cellulose derivatives reduced the critical micellar concentration and enthalpy of micellization of F127, altering hydrodynamic diameters of the aggregates. Mucoadhesion performance was useful to select the best systems for mucosal application. The systems composed of 17.5% (w/w) F127 and 3% (w/w) HPMC or 1% (w/w) NaCMC are promising as topical drug delivery systems, mainly on mucosal surfaces. They were biocompatible when tested against Artemia salina, and also able to release a model of hydrophilic drug in a controlled manner.
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Affiliation(s)
- Jéssica Bassi da Silva
- Postgraduate Program in Pharmaceutical Sciences, Laboratory of Research and Development of Drug Delivery Systems, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil
| | - Rafaela Said Dos Santos
- Postgraduate Program in Pharmaceutical Sciences, Laboratory of Research and Development of Drug Delivery Systems, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil
| | | | - Gustavo Braga
- Department of Chemistry, State University of Maringa, Maringa, Brazil
| | - Michael Thomas Cook
- Research Centre in Topical Drug Delivery and Toxicology, School of Life and Medical Sciences, University of Hertfordshire, Hatfield AL10 9AB, United Kingdom
| | - Marcos Luciano Bruschi
- Postgraduate Program in Pharmaceutical Sciences, Laboratory of Research and Development of Drug Delivery Systems, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil.
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10
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Patel A, Lima MRN, Cho HY, Lee KB, Murthy NS, Kohn J. Disassembly of Nanospheres with a PEG Shell upon Adsorption onto PEGylated Substrates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:232-241. [PMID: 31825622 DOI: 10.1021/acs.langmuir.9b03042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Polymeric nanospheres have the ability to encapsulate drugs and are therefore widely used in drug delivery applications. Structural transformations that affect drug release from nanospheres are governed by the surrounding environment. To understand these effects, we investigated the adsorption behavior of three types of nanospheres onto model surfaces using quartz crystal microbalance with dissipation (QCM-D) and by atomic force microscopy (AFM). Substrates were prepared from polymers with different degrees of PEGylation (0, 1, and 15%). Nanospheres were prepared via self-assembly of block copolymers. Tyrosine-derived nanospheres are A-B-A triblock copolymers with methoxy poly(ethylene glycol) (PEG) as the A-blocks and an alternating copolymer of desaminotyrosyl-tyrosine octyl ester and suberic acid oligo(DTO-SA) as the B-block. On non-PEGylated substrates, these nanospheres assembled into a close-packed structure; on PEGylated substrates, the adsorbed nanospheres formed a continuous film, thinner than the size of the nanospheres suggesting unraveling of the PEG corona and disassembly of the nanospheres. Also, the adsorption was concentration-dependent, the final thickness being attained at exponentially longer times at lower concentrations. Such substrate- and concentration-dependent behavior was not observed with Pluronic F-127 and PEG-poly(caprolactone) (PCL) nanospheres. Since the essential difference among the three nanospheres is the composition of the core, we conclude that the core influences the adsorption characteristics of the nanospheres as a consequence of their disassembly upon adsorption. These results are expected to be useful in designing nanospheres for their efficient transport across vascular barriers and for delivering drugs to their targets.
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Almeida TC, Seibert JB, Almeida SHDS, Amparo TR, Teixeira LFDM, Barichello JM, Postacchini BB, Santos ODHD, Silva GND. Polymeric micelles containing resveratrol: development, characterization, cytotoxicity on tumor cells and antimicrobial activity. BRAZ J PHARM SCI 2020. [DOI: 10.1590/s2175-97902019000418401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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13
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Shi H, Chi H, Luo Z, Jiang L, Loh XJ, He C, Li Z. Self-Healable, Fast Responsive Poly(ω-Pentadecalactone) Thermogelling System for Effective Liver Cancer Therapy. Front Chem 2019; 7:683. [PMID: 31681733 PMCID: PMC6813430 DOI: 10.3389/fchem.2019.00683] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Accepted: 10/01/2019] [Indexed: 12/30/2022] Open
Abstract
A polyurethane based thermogelling system comprising poly(ω-pentadecalactone) (PPDL), poly(ethylene glycol) (PEG), and poly(propylene glycol) (PPG), termed as PDEP, was synthesized. The incorporation of PPDL lowers critical micelle concentration (CMC) as well as critical gelation concentration (CGC) of the novel copolymers compared to commercial Pluronic® F127. The thermogels showed excellent thermal stability at high temperature up to 80°C, fast response to temperature change in a time frame of less than second, as well as remarkable self-healing properties after being broken at high strain. In vitro drug release studies using docetaxel (DTX) and cell uptake studies using doxorubicin (DOX) show high potential of the hydrogel as drug reservoir for sustainable release profile of payloads, while the in vivo anti-tumor evaluation using mice model of hepatocellular carcinoma further demonstrated the significant inhibition on the growth of tumor. Together with its excellent biocompatibility in different organs, the novel PDPE thermogelling copolymers reported in this work could potentially be utilized as in situ-forming hydrogels for liver cancer therapy.
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Affiliation(s)
- Huihui Shi
- Department of Materials Science and Engineering, National University of Singapore, Singapore, Singapore
| | - Hong Chi
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Zheng Luo
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, China
| | - Lu Jiang
- Institute of Materials Research and Engineering, ASTAR (Agency for Science, Technology and Research), Singapore, Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering, ASTAR (Agency for Science, Technology and Research), Singapore, Singapore
| | - Chaobin He
- Department of Materials Science and Engineering, National University of Singapore, Singapore, Singapore
| | - Zibiao Li
- Institute of Materials Research and Engineering, ASTAR (Agency for Science, Technology and Research), Singapore, Singapore
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Shih KC, Shen Z, Li Y, Kröger M, Chang SY, Liu Y, Nieh MP, Lai HM. What causes the anomalous aggregation in pluronic aqueous solutions? SOFT MATTER 2018; 14:7653-7663. [PMID: 30175836 DOI: 10.1039/c8sm01096j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Pluronic (PL) block copolymers have been widely used as delivery carriers, molecular templates for porous media, and process additives for affecting rheological behavior. Unlike most surfactant systems, where unimer transforms into micelle with increased surfactant concentration, anomalous large PL aggregates below the critical micelle concentration (CMC) were found throughout four types of PL (F108, F127, F88 and P84). We characterized their structures using dynamic light scattering and small-angle X-ray/neutron scattering. Molecular dynamics simulations suggest that the PPO segments, though weakly hydrophobic interaction (insufficient to form micelles), promote the formation of large aggregates. Addition of acid or base (e.g. citric acid, acetic acid, HCl and NaOH) in F108 solution significantly suppresses the aggregate formation for up to 20 days due to the repulsion force from the attached H3O+ molecules on the EO segment in both PEO and PL and the reduction of CMC through the salting out effect, respectively.
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Affiliation(s)
- Kuo-Chih Shih
- Department of Agricultural Chemistry, National Taiwan University, Taipei, 10617, Taiwan.
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Cao W, Hu N, Yuan Y, Cheng J, Guo X, Wang Y, Wang X, Hu P. Effects of Tilianin on Proliferation, Migration and TGF-β/Smad Signaling in Rat Vascular Smooth Muscle Cells Induced with Angiotensin II. Phytother Res 2017. [PMID: 28620995 DOI: 10.1002/ptr.5846] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Wenjiang Cao
- First Affiliated Hospital of the Medical College; Shihezi University; Xinjiang 832008 China
| | - Na Hu
- College of Medicine; Shihezi University; Xinjiang 832002 China
| | - Yong Yuan
- First Affiliated Hospital of the Medical College; Shihezi University; Xinjiang 832008 China
| | - Jiang Cheng
- First Affiliated Hospital of the Medical College; Shihezi University; Xinjiang 832008 China
| | - Xinhong Guo
- First Affiliated Hospital of the Medical College; Shihezi University; Xinjiang 832008 China
| | - Yanfang Wang
- First Affiliated Hospital of the Medical College; Shihezi University; Xinjiang 832008 China
- College of Medicine; Shihezi University; Xinjiang 832002 China
| | - Xinchun Wang
- First Affiliated Hospital of the Medical College; Shihezi University; Xinjiang 832008 China
- College of Medicine; Shihezi University; Xinjiang 832002 China
| | - Ping Hu
- College of Pharmaceutical Sciences and Innovative Drug Research Centre; Chongqing University; 55 South Daxuecheng Road Chongqing 401331 China
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16
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Micro- and nano-carrier systems: The non-invasive and painless local administration strategies for disease therapy in mucosal tissues. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:153-171. [DOI: 10.1016/j.nano.2016.08.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 08/05/2016] [Accepted: 08/17/2016] [Indexed: 12/12/2022]
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17
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Valero M, Castiglione F, Mele A, da Silva MA, Grillo I, González-Gaitano G, Dreiss CA. Competitive and Synergistic Interactions between Polymer Micelles, Drugs, and Cyclodextrins: The Importance of Drug Solubilization Locus. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:13174-13186. [PMID: 27951706 DOI: 10.1021/acs.langmuir.6b03367] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Polymeric micelles, in particular PEO-PPO-based Pluronic, have emerged as promising drug carriers, while cyclodextrins (CD), cyclic oligosaccharides with an apolar cavity, have long been used for their capacity to form inclusion complexes with drugs. Dimethylated β-cyclodextrin (DIMEB) has the capacity to fully breakup F127 Pluronic micelles, while this effect is substantially hindered if drugs are loaded within the micellar aggregates. Four drugs were studied at physiological temperature: lidocaine (LD), pentobarbital sodium salt (PB), sodium naproxen (NP), and sodium salicylate (SAL); higher temperatures shift the equilibrium toward higher drug partitioning and lower drug/CD binding compared to 25 °C ( Valero, M.; Dreiss, C. A. Growth, Shrinking, and Breaking of Pluronic Micelles in the Presence of Drugs and/or β-Cyclodextrin, a Study by Small-Angle Neutron Scattering and Fluorescence Spectroscopy . Langmuir 2010 , 26 , 10561 - 10571 ). The impact of drugs on micellar structure was characterized by small-angle neutron scattering (SANS), while their solubilization locus was revealed by 2D NOESY NMR. UV and fluorescence spectroscopy, Dynamic and Static Light Scattering were employed to measure a range of micellar properties and drug:CD interactions: binding constant, drug partitioning within the micelles, critical micellar concentration of the loaded micelles, aggregation number (Nagg). Critically, time-resolved SANS (TR-SANS) reveal that micellar breakup in the presence of drugs is substantially slower (100s of seconds) than for the free micelles (<100 ms) ( Valero, M.; Grillo, I.; Dreiss, C. A. Rupture of Pluronic Micelles by Di-Methylated β-Cyclodextrin Is Not Due to Polypseudorotaxane Formation . J. Phys. Chem. B 2012 , 116 , 1273 - 1281 ). These results combined together give new insights into the mechanisms of protection of the drugs against CD-induced micellar breakup. The outcomes are practical guidelines to improve the design of drug delivery systems as well as a better understanding of competitive assembly mechanisms leading to shape and function modulation.
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Affiliation(s)
- Margarita Valero
- Dpto. Química Física, Facultad de Farmacia, Universidad de Salamanca , Campus Miguel de Unamuno, s/n, 37007 Salamanca, Spain
| | - Franca Castiglione
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano , Piazza L. Da Vinci 32, I-20133 Milano, Italy
| | - Andrea Mele
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano , Piazza L. Da Vinci 32, I-20133 Milano, Italy
| | - Marcelo A da Silva
- Institute of Pharmaceutical Science, King's College London , Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - Isabelle Grillo
- Institut Laue Langevin , 71 avenue des martyrs, B.P. 156, 38042 Grenoble Cedex 9, France
| | | | - Cécile A Dreiss
- Institute of Pharmaceutical Science, King's College London , Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, United Kingdom
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18
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Bahadur A, Cabana-Montenegro S, Aswal VK, Lage EV, Sandez-Macho I, Concheiro A, Alvarez-Lorenzo C, Bahadur P. NaCl-triggered self-assembly of hydrophilic poloxamine block copolymers. Int J Pharm 2015; 494:453-62. [PMID: 26315124 DOI: 10.1016/j.ijpharm.2015.08.058] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 08/18/2015] [Accepted: 08/20/2015] [Indexed: 12/22/2022]
Abstract
Tetronic 1307 (T1307) is a hydrophilic poloxamine (HLB>24) with a high molecular mass owing to its long PEO and PPO blocks. In spite of good biocompatibility, its use as a component of drug delivery systems is limited by its high critical micelle concentration (CMC) and temperature (CMT). The aim of this work was to elucidate whether the addition of NaCl or the combination of salts and temperature may bring T1307 micellization and gelling features into more practically useful values. Increasing NaCl concentration in the 0.154 M (isotonic) to 2M (hypertonic) range made the copolymer more hydrophobic and more prone to self-assemble into unimodal micelles, as observed by means of π-A isotherms, (1)H NMR, dynamic light scattering (DLS), small-angle neutron scattering (SANS), and pyrene fluorescence. The decrease in CMC and CMT observed for T1307 in 0.5 M NaCl medium (tolerable hypertonic solution), compared to water, notably favored the solubility of hydrophobic drugs such as curcumin and quercetin. Moreover, phase diagram, intrinsic viscosity and sol-to-gel transition were markedly affected by NaCl concentration. Overall, the strong dependence of T1307 self-assembly features on NaCl opens interesting possibilities for tuning the performance of T1307 as a component of nanocarriers and in situ gelling systems.
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Affiliation(s)
- Anita Bahadur
- Department of Zoology, PT Sarvajanik College of Science, Surat 395001 India
| | - Sonia Cabana-Montenegro
- Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Vinod Kumar Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Emilio V Lage
- Departamento de Química Física, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Isabel Sandez-Macho
- Departamento de Química Física, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Angel Concheiro
- Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Carmen Alvarez-Lorenzo
- Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Pratap Bahadur
- Chemistry Department, Veer Narmad South Gujarat University, Surat 395001 India.
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Han Y, Ahn SK, Zhang Z, Smith GS, Do C. Tunable Encapsulation Structure of Block Copolymer Coated Single-Walled Carbon Nanotubes in Aqueous Solution. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00456] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
| | | | - Zhe Zhang
- Jülich
Center for Neutron Science, Forschungszentrum Jülich, Jülich, NRW 52425, Germany
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20
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Nguyen DH, Bae JW, Choi JH, Lee JS, Park KD. Bioreducible cross-linked Pluronic micelles: pH-triggered release of doxorubicin and folate-mediated cellular uptake. J BIOACT COMPAT POL 2013. [DOI: 10.1177/0883911513491642] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Bioreducible are described here, cross-linked Pluronic micelles carrying doxorubicin (DOX) for folate-mediated cancer targeting. The amine-terminated Pluronic® F-127 was functionalized by grafting acrylic acid (AA) to the hydrophobic block (AA-Pluronic-NH2). Folic acid (FA), hydrazine (H), and cystamine (C) were sequentially conjugated to AA-Pluronic-NH2, followed by DOX conjugation via an acid-labile hydrazone bond (FA-Pluronic-C/H-DOX). The DOX content was approximately 143 µg/mg of polymer. We prepared bioreducible cross-linked micelles using FA-Pluronic-C/H-DOX, which had a diameter of 156.1 nm. After incubation for 24 h with 10 mM of dithiothreitol, the micelle size decreased dramatically to 87.6 nm with a broad distribution, indicating that disulfide bonds in the micelle core were reductively cleaved. In vitro release data showed that the conjugated DOX was released slowly from the FA-Pluronic C/H-DOX micelles at pH 7.4, whereas there was a rapid DOX release at pH 5.2. Confocal images of HeLa cells showed enhanced cellular uptake of FA-Pluronic-C/H-DOX micelles as compared to nontargeted Pluronic-C/H-DOX micelles. The FA-Pluronic-C/H-DOX micelles killed more cells than the nontargeted micelles, but the cytotoxic effect was not as significant as free DOX. Additionally, micelles without DOX were not cytotoxic. On the basis of these results, pH- and redox potential–responsive FA-Pluronic-C/H-DOX micelles could potentially function as cancer-targeted and controlled DOX delivery systems.
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Affiliation(s)
- Dai Hai Nguyen
- Department of Molecular Science and Technology, Ajou University, Suwon, Republic of Korea
| | - Jin Woo Bae
- Department of Molecular Science and Technology, Ajou University, Suwon, Republic of Korea
| | - Jong Hoon Choi
- Department of Molecular Science and Technology, Ajou University, Suwon, Republic of Korea
| | - Jung Seok Lee
- Department of Molecular Science and Technology, Ajou University, Suwon, Republic of Korea
| | - Ki Dong Park
- Department of Molecular Science and Technology, Ajou University, Suwon, Republic of Korea
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21
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Sabir TS, Rowland L, Milligan JR, Yan D, Aruni AW, Chen Q, Boskovic DS, Kurti RS, Perry CC. Mechanistic investigation of seeded growth in triblock copolymer stabilized gold nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:3903-3911. [PMID: 23473268 PMCID: PMC4440571 DOI: 10.1021/la400387h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We report the seeded synthesis of gold nanoparticles (GNPs) via the reduction of HAuCl4 by (L31 and F68) triblock copolymer (TBP) mixtures. In the present study, we focused on [TBP]/[Au(III)] ratios of 1-5 (≈1 mM HAuCl4) and seed sizes ~20 nm. Under these conditions, the GNP growth rate is dominated by both the TBP and seed concentrations. With seeding, the final GNP size distributions are bimodal. Increasing the seed concentration (up to ~0.1 nM) decreases the mean particle sizes 10-fold, from ~1000 to 100 nm. The particles in the bimodal distribution are formed by the competitive direct growth in solution and the aggregative growth on the seeds. By monitoring kinetics of GNP growth, we propose that (1) the surface of the GNP seeds embedded in the TBP cavities form catalytic centers for GNP growth and (2) large GNPs are formed by the aggregation of GNP seeds in an autocatalytic growth process.
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Affiliation(s)
- Theodore S. Sabir
- Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92350
| | - Leah Rowland
- Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92350
| | - Jamie R. Milligan
- Department of Radiology, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093
| | - Dong Yan
- Center for Nanoscale Science and Engineering, University of California, Riverside, 900 University Avenue, Riverside, CA 92521
| | - A. Wilson Aruni
- Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92350
| | - Qiao Chen
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, United Kingdom
| | - Danilo S. Boskovic
- Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92350
| | - R. Steven Kurti
- School of Dentistry, Loma Linda University, Loma Linda, CA 92350
| | - Christopher C. Perry
- Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92350
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Experimental Study of CMC Evaluation in Single and Mixed Surfactant Systems, Using the UV–Vis Spectroscopic Method. J SURFACTANTS DETERG 2012. [DOI: 10.1007/s11743-012-1403-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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23
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Gao Q, Liang Q, Yu F, Xu J, Zhao Q, Sun B. Synthesis and characterization of novel amphiphilic copolymer stearic acid-coupled F127 nanoparticles for nano-technology based drug delivery system. Colloids Surf B Biointerfaces 2011; 88:741-8. [PMID: 21906917 DOI: 10.1016/j.colsurfb.2011.08.010] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Revised: 06/30/2011] [Accepted: 08/10/2011] [Indexed: 11/30/2022]
Abstract
Pluronic, F127, amphiphilic block copolymers, are used for several applications, including drug delivery systems. The critical micelle concentration (CMC) of F127 is about 0.26-0.8 wt% so that the utility of F127 in nano-technology based drug delivery system is limited since the nano-sized micelles could dissociate upon dilution. Herein, stearic acid (SA) was simply coupled to F127 between the carboxyl group of SA and the hydroxyl group of F127, which formed a novel copolymer named as SA-coupled F127, with significantly lower CMC. Above the CMC 6.9 × 10(-5)wt%, SA-coupled F127 self-assembled stable nanoparticles with Zeta potential -36 mV. Doxorubicin (DOX)-loaded nanoparticles were made, with drug loading (DL) 5.7 wt% and Zeta potential -36 to -39 mV, and the nanoparticles exhibited distinct shape with the size distribution from 20 to 50 nm. DOX-loaded nanoparticles were relatively stable and exhibited DOX dependant cytotoxicity toward MCF-7 cells in vitro. These results suggest that SA-coupled F127 potentially could be applied as a nano-technology based drug delivery method.
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Affiliation(s)
- Qihe Gao
- Southeast University, School of Chemistry and Chemical Engineering, Nanjing 210000, China
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