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Gupta A, Kulkarni S, Soman S, Saha M, Kulkarni J, Rana K, Dhas N, Ayesha Farhana S, Kumar Tiyyagura P, Pandey A, Moorkoth S, Mutalik S. Breaking barriers in cancer management: The promising role of microsphere conjugates in cancer diagnosis and therapy. Int J Pharm 2024; 665:124687. [PMID: 39265846 DOI: 10.1016/j.ijpharm.2024.124687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 08/29/2024] [Accepted: 09/07/2024] [Indexed: 09/14/2024]
Abstract
Cancer is a significant worldwide health concern, and there is a demand for ongoing breakthroughs in treatment techniques. Microspheres are among the most studied drug delivery platforms for delivering cargo to a specified location over an extended period of time. They are biocompatible, biodegradable, and capable of surface modifications. Microspheres and their conjugates have emerged as potential cancer therapeutic options throughout the years. This review provides an in-depth look at the current advancements and applications of microspheres and their conjugates in cancer treatment. The review encompasses a wide array of conjugates, ranging from polymers such as ethyl cellulose and Eudragit to stimuli-responsive polymers, proteins, peptides, polysaccharides such as HA and chitosan, inorganic metals, aptamers, quantum dots (QDs), biomimetic conjugates, and radio conjugates designed for radioembolization. Conjugated microspheres precisely deliver chemotherapeutics to the intended target while achieving controlled drug release to prevent side effects. It offers a means of integrating several distinct therapeutic modalities (chemotherapy, photothermal therapy, photodynamic therapy, radiotherapy, immunotherapy, etc.) to provide synergistic effects during cancer treatment. This review offers insights into the prospects and evolving role of microspheres and their conjugates in the dynamic landscape of cancer therapy. This review provides a comprehensive resource for researchers and clinicians working towards advancements in cancer treatment through innovative applications in therapy and translational research.
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Affiliation(s)
- Ashutosh Gupta
- Department of Pharmaceutical Quality Assurance, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Sanjay Kulkarni
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Soji Soman
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Moumita Saha
- Department of Pharmaceutical Quality Assurance, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Jahnavi Kulkarni
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Komal Rana
- Manipal - Government of Karnataka Bioincubator, 3rd Floor, Advanced Research Centre, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Namdev Dhas
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Syeda Ayesha Farhana
- Department of Pharmaceutics, College of Pharmacy, Qassim University, Buraidah, Qassim 51452, Saudi Arabia
| | - Pavan Kumar Tiyyagura
- Department of Chemical Engineering, Manipal Institute of Technology Manipal, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Abhijeet Pandey
- Global Drug Development/ Technical Research and Development, Novartis Healthcare Private Limited, Genome Valley, Hyderabad 500081, Telangana, India
| | - Sudheer Moorkoth
- Department of Pharmaceutical Quality Assurance, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Srinivas Mutalik
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India.
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Komarova GA, Gumerov RA, Rudyak VY, Kozhunova EY, Potemkin II, Nasimova IR. Peculiarities of Emulsions Stabilized by Stimuli-Responsive Interpenetrating Polymeric Network Microgels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:9414-9425. [PMID: 38651693 DOI: 10.1021/acs.langmuir.3c03649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Emulsions have become a crucial product form in various industries in modern times. Expanding the class of substances used to stabilize emulsions can improve their stability or introduce new properties. Particularly, the use of stimuli-responsive microgels makes it possible to create "smart" emulsions whose stability can be controlled by changing any of the specified stimuli. Thus, finding new ways to stabilize emulsions may broaden their application. In this work, for the first time, we applied microgels based on interpenetrating polymeric networks (IPNs) of poly(N-isopropylacrylamide) (PNIPAM) and poly(acrylic acid) (PAA) as stabilizing agents for "oil-in-water" emulsions. We have demonstrated that emulsions stabilized by such soft particles can remain colloidally stable for an extended period, even after being heated up to 40 °C, which is above the lower critical solution temperature (LCST) of PNIPAM. On the contrary, the emulsions stabilized by PNIPAM homopolymer microgels were broken upon heating. To understand the stabilization mechanism of the emulsions, mesoscopic computer simulations were performed to study the IPN microgels at the liquid-liquid interface. The simulations demonstrated that when the first subnetwork (PNIPAM) collapses, the particle adopts a flattened core-shell morphology with a highly swollen PAA-rich shell and a collapsed PNIPAM-rich core. Unlike its PNIPAM homopolymer counterpart, the IPN microgel maintains its three-dimensional shape, which provides stability to the microgel-based emulsions over a wide range of temperatures. Our combined findings could be useful in developing new approaches to emulsions' storage, biphasic catalysis, and lubrication of mechanisms in various operating and climatic conditions.
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Affiliation(s)
- Galina A Komarova
- Physics Department, Lomonosov Moscow State University, Leninskie gory 1-2, 119991 Moscow, Russian Federation
| | - Rustam A Gumerov
- Physics Department, Lomonosov Moscow State University, Leninskie gory 1-2, 119991 Moscow, Russian Federation
| | - Vladimir Yu Rudyak
- Department of Condensed Matter, School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel
| | - Elena Yu Kozhunova
- Physics Department, Lomonosov Moscow State University, Leninskie gory 1-2, 119991 Moscow, Russian Federation
| | - Igor I Potemkin
- Physics Department, Lomonosov Moscow State University, Leninskie gory 1-2, 119991 Moscow, Russian Federation
| | - Irina R Nasimova
- Physics Department, Lomonosov Moscow State University, Leninskie gory 1-2, 119991 Moscow, Russian Federation
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Weng MT, Elsyed AFN, Yang PC, Mohamed MG, Kuo SW, Lin KS. Fluorescent and thermoresponsive tetraphenylethene-based cross-linked poly(N-isopropylacrylamide)s: Synthesis, thermal/AIE properties, and cell viability. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Işıkver Y, Saraydın D. Smart Hydrogels: Preparation, Characterization, and Determination of Transition Points of Crosslinked N-Isopropyl Acrylamide/Acrylamide/Carboxylic Acids Polymers. Gels 2021; 7:113. [PMID: 34449617 PMCID: PMC8395758 DOI: 10.3390/gels7030113] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/28/2021] [Accepted: 08/04/2021] [Indexed: 12/20/2022] Open
Abstract
Smart hydrogels (SH) were prepared by thermal free radical polymerization of N-isopropyl acrylamide (NIPAAm), acrylamide (AAm) with acrylic acid (A) or maleic acid (M), and N,N'-methylene bisacrylamide. Spectroscopic and thermal characterizations of SHs were performed using FTIR, TGA, and DSC. To determine the effects of SHs on swelling characteristics, swelling studies were performed in different solvents, solutions, temperatures, pHs, and ionic strengths. In addition, cycle equilibrium swelling studies were carried out at different temperatures and pHs. The temperature and pH transition points of SHs are calculated using a sigmoidal equation. The pH transition points were calculated as 5.2 and 4.2 for SH-M and SH-A, respectively. The NIPAAm/AAm hydrogel exhibits a critical solution temperature (LCST) of 28.35 °C, while the SH-A and SH-M hydrogels exhibit the LCST of 34.215 °C and 28.798 °C, respectively, and the LCST of SH-A is close to the body. temperature. Commercial (CHSA) and blood human serum albumin (BHSA) were used to find the adsorption properties of biopolymers on SHs. SH-M was the most efficient SH, adsorbing 49% of CHSA while absorbing 16% of BHSA. In conclusion, the sigmoidal equation or Gaussian approach can be a useful tool for chemists, chemical engineers, polymer and plastics scientists to find the transition points of smart hydrogels.
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Affiliation(s)
| | - Dursun Saraydın
- Chemistry Department, Science Faculty, Sivas Cumhuriyet University, Sivas 58140, Turkey;
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Droplet breakup mechanisms in premix membrane emulsification and related microfluidic channels. Adv Colloid Interface Sci 2021; 290:102393. [PMID: 33770649 DOI: 10.1016/j.cis.2021.102393] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 02/22/2021] [Accepted: 02/25/2021] [Indexed: 12/13/2022]
Abstract
Premix membrane emulsification (PME) is a pressure driven process of droplet breakup, caused by their motion through membrane pores. The process is widely used for high-throughput production of sized-controlled emulsion droplets and microparticles using low energy inputs. The resultant droplet size depends on numerous process, membrane, and formulation factors such as flow velocity in pores, number of extrusions, initial droplet size, internal membrane geometry, wettability of pore walls, and physical properties of emulsion. This paper provides a comprehensive review of different mechanisms of droplet deformation and breakup in membranes with versatile pore morphologies including sintered glass and ceramic filters, SPG and polymeric membranes with sponge-like structures, micro-engineered metallic membranes with ordered straight-through pore arrays, and dynamic membranes composed of unconsolidated particles. Fundamental aspects of droplet motion and breakup in idealized pore networks have also been covered including droplet disruption in T-junctions, channel constrictions, and obstructed channels. The breakup mechanisms due to shear interactions with pore walls and localized shear (direct breaking) or due to interfacial tension effects and Rayleigh-Plateau instability (indirect breaking) are systematically discussed based on recent experimental and numerical studies. Non-dimensional droplet size correlations based on capillary, Weber, and Ohnesorge numbers are also presented.
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Abstract
Abstract
Stimuli-responsive hydrogels (SRH) were prepared by using monomers (i.e. N-isopropyl acrylamide; NIPAM and acrylamide; AAm), co-monomers (i.e. methacrylic acid; MPA or mesaconic acid; MFA) and a crosslinker (N, N’-methylene bisacrylamide; N-Bis). SRH have been prepared by thermal free radical polymerization reaction in aqueous solution. Spectroscopic and thermal analyses such as Fourier Transform Infrared Spectroscopy, thermogravimetric analysis and differential scanning calorimetry analysis were performed for SRH characterization. The equilibrium swelling studies by gravimetrically were carried out in different solvents, at the solutions, temperature, pH, and ionic strengths to determine their effect on swelling characteristic of the hydrogels. In addition, cycles equilibrium swelling studies were made with the solutions at different temperatures and at different pH. NIPAM/AAm hydrogel exhibits a lover critical solution temperature (LCST) at 28 oC, whereas NIPAM/AAm-MPA and NIPAM/AAm-MFA hydrogels exhibit a LCST at 31 C and 35 oC, respectively, and the LCST of NIPAM/AAm-MFA hydrogel is close to the body temperature.
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“Smart” IPN microgels with different network structures: Self-crosslinked vs conventionally crosslinked. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.05.037] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Zhang Z, Cheng M, Gabriel MS, Teixeira Neto ÂA, da Silva Bernardes J, Berry R, Tam KC. Polymeric hollow microcapsules (PHM) via cellulose nanocrystal stabilized Pickering emulsion polymerization. J Colloid Interface Sci 2019; 555:489-497. [PMID: 31401481 DOI: 10.1016/j.jcis.2019.07.107] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 07/16/2019] [Accepted: 07/31/2019] [Indexed: 02/03/2023]
Abstract
A practical and sustainable method to prepare polymeric hollow microcapsules (PHMs) using cellulose nanocrystal (CNC) stabilized Pickering emulsion polymerization was developed. Pristine CNCs hydrolyzed from wood pulp are hydrophilic and could be employed as emulsifiers to prepare oil-in-water (O/W) Pickering emulsions. The O/W Pickering emulsions were used as templates for the Pickering emulsion polymerization of hydrophobic monomers inside the emulsion droplets. The crosslinked hydrophobic polymers phase separated and partitioned to the interface of the Pickering emulsion, leading to the formation of hydrophobic PHMs. Correspondingly, cinnamate modified CNCs with less surface hydrophilicity were employed as emulsifiers to obtain water-in-oil (W/O) inverse Pickering emulsions, which were then used as templates for inverse Pickering emulsion polymerization of hydrophilic monomers to prepare hydrophilic PHMs. Therefore, both hydrophobic and hydrophilic PHMs could be obtained via this approach. Herein, polystyrene, poly(4-vinylpyridine), and poly(N-isopropyl acrylamide) hollow microcapsules were prepared as models, where the size, crosslinking density, shell structure and stimuli-responsive properties of PHMs could be tuned by varying the synthesis parameters.
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Affiliation(s)
- Zhen Zhang
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, PR China; Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L3G1, Canada; SCNU-TUE Joint Lab of Device Integrated Responsive Materials (DIRM), National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou Higher Education Mega Center, Guangzhou 510006, PR China; Shenzhen Guohua Optoelectronics Tech. Co. Ltd, Shenzhen 518110, PR China
| | - Maria Cheng
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L3G1, Canada
| | - Mia San Gabriel
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L3G1, Canada
| | - Ângela Albuquerque Teixeira Neto
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Sao Paulo 13083-970, Brazil
| | - Juliana da Silva Bernardes
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Sao Paulo 13083-970, Brazil
| | - Richard Berry
- CelluForce Inc., 625, Président-Kennedy Ave, Montreal, Quebec H3A 1K2, Canada
| | - Kam C Tam
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L3G1, Canada.
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Guo P, Liang J, Li Y, Lu X, Fu H, Jing H, Guan S, Han D, Niu L. High-strength and pH-responsive self-healing polyvinyl alcohol/poly 6-acrylamidohexanoic acid hydrogel based on dual physically cross-linked network. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.03.027] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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10
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Xinxin Sang, Zhang M, Wen Q, Shi G, Zhang L, Ni C. Preparation of Drug-Eluting Microspheres Based on Semi-Interpenetrating Polymer Network of Modified Chitosan and Poly(2-acrylamide-2-methylpropanesulfonic acid). POLYMER SCIENCE SERIES A 2019. [DOI: 10.1134/s0965545x19010061] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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11
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de Lima BLB, Marques NDN, Villetti MA, Balaban RDC. HPAM-g
-PEOPPO: Rheological modifiers in aqueous media of high temperature and high ionic strength. J Appl Polym Sci 2019. [DOI: 10.1002/app.47453] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Bruna Luiza Batista de Lima
- Laboratório de Pesquisa em Petróleo - LAPET; Universidade Federal do Rio Grande do Norte; 59078970 Natal Rio Grande do Norte Brazil
| | - Nívia do Nascimento Marques
- Laboratório de Pesquisa em Petróleo - LAPET; Universidade Federal do Rio Grande do Norte; 59078970 Natal Rio Grande do Norte Brazil
| | - Marcos Antônio Villetti
- Laboratório de Espectroscopia de Polímeros - LEPOL; Universidade Federal de Santa Maria; 97105-900 Santa Maria Rio Grande do Sul Brazil
| | - Rosangela de Carvalho Balaban
- Laboratório de Pesquisa em Petróleo - LAPET; Universidade Federal do Rio Grande do Norte; 59078970 Natal Rio Grande do Norte Brazil
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Hsu MN, Wei SC, Guo S, Phan DT, Zhang Y, Chen CH. Smart Hydrogel Microfluidics for Single-Cell Multiplexed Secretomic Analysis with High Sensitivity. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1802918. [PMID: 30334375 DOI: 10.1002/smll.201802918] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 10/02/2018] [Indexed: 05/22/2023]
Abstract
Secreted proteins determine a range of cellular functionalities correlated with human health and disease progression. Because of cell heterogeneity, it is essential to measure low abundant protein secretions from individual cells to determine single-cell activities. In this study, an integrated platform consisting of smart hydrogel immunosensors for the sensitive detection of single-cell secretions is developed. A single cell and smart hydrogel microparticles are encapsulated within a droplet. After incubation, target secreted proteins from the cell are captured in the smart hydrogel particle for immunoassay. The temperature-induced volume phase transition of the hydrogel biosensor allows the concentration of analytes within the gel matrix to increase, enabling high-sensitivity measurements. Distinct heterogeneity for live cell secretions is determined from 6000 cells within 1 h. This method is tested for low abundant essential secretions, such as interleukin-6, interleukin-8, and monocyte chemoattractant protein-1 secretions of both suspended cells (HL60) and adherent cells (MCF7 and MDA-MB-231). This platform is highly flexible and can be used to simultaneously measure a wide range of clinically relevant cellular secretions; it thus represents a novel tool for precise biological assays.
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Affiliation(s)
- Myat Noe Hsu
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore, 117456, Singapore
- Department of Biomedical Engineering, National University of Singapore, Singapore, 117574, Singapore
- Biomedical Institute for Global Health Research and Technology (BIGHEART), Singapore, 117599, Singapore
| | - Shih-Chung Wei
- Department of Biomedical Engineering, National University of Singapore, Singapore, 117574, Singapore
- Biomedical Institute for Global Health Research and Technology (BIGHEART), Singapore, 117599, Singapore
| | - Song Guo
- Department of Biomedical Engineering, National University of Singapore, Singapore, 117574, Singapore
| | - Dinh-Tuan Phan
- Department of Biomedical Engineering, National University of Singapore, Singapore, 117574, Singapore
| | - Yong Zhang
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore, 117456, Singapore
- Department of Biomedical Engineering, National University of Singapore, Singapore, 117574, Singapore
| | - Chia-Hung Chen
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore, 117456, Singapore
- Department of Biomedical Engineering, National University of Singapore, Singapore, 117574, Singapore
- Biomedical Institute for Global Health Research and Technology (BIGHEART), Singapore, 117599, Singapore
- Singapore Institute for Neurotechnology (SINAPSE), Singapore, 117456, Singapore
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13
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Micali N, Bertoldo M, Buratti E, Nigro V, Angelini R, Villari V. Interpenetrating Polymer Network Microgels in Water: Effect of Composition on the Structural Properties and Electrosteric Interactions. Chemphyschem 2018; 19:2894-2901. [PMID: 30074305 DOI: 10.1002/cphc.201800707] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Indexed: 12/11/2022]
Abstract
Microgels of cross-linked interpenetrating polymer networks (IPNs) are very versatile systems combining the properties of colloids and polymers. Herein we study IPN microgels composed of poly(N-isopropylacrylamide) and poly(acrylic acid) to understand how weight composition and reactant concentrations affect their structural, conformational and electrosteric properties in water. The results show that it is possible to drive the formation of microgels with the desired properties by adjusting IPN composition and preparation method during the synthesis. During synthesis, the polymerization of acrylic acid triggers the merging among IPNs via covalent linking, giving rise to microgels with larger mass and size, the effect being larger for higher concentration of the reactants. In addition, a close relation between the microgel internal conformation and the colloidal stability is observed, due to the presence of screened groups inside the microgel.
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Affiliation(s)
- Norberto Micali
- CNR-IPCF Istituto per i Processi Chimico-Fisici, Consiglio Nazionale delle Ricerche, Viale F. Stagno d'Alcontres 37, I-98158, Messina, Italy
| | - Monica Bertoldo
- CNR-IPCF Istituto per i Processi Chimico-Fisici, Consiglio Nazionale delle Ricerche, Area della Ricerca, Via G. Moruzzi 1, I-56124, Pisa, Italy
| | - Elena Buratti
- CNR-IPCF Istituto per i Processi Chimico-Fisici, Consiglio Nazionale delle Ricerche, Area della Ricerca, Via G. Moruzzi 1, I-56124, Pisa, Italy
| | - Valentina Nigro
- CNR-ISC Istituto dei Sistemi Complessi, sede Sapienza, Consiglio Nazionale delle Ricerche, P.le Aldo Moro 5, I-00185, Roma, Italy.,Dipartimento di Fisica, Sapienza Università di Roma, P.le Aldo Moro 5, 00185, Roma, Italy
| | - Roberta Angelini
- CNR-ISC Istituto dei Sistemi Complessi, sede Sapienza, Consiglio Nazionale delle Ricerche, P.le Aldo Moro 5, I-00185, Roma, Italy.,Dipartimento di Fisica, Sapienza Università di Roma, P.le Aldo Moro 5, 00185, Roma, Italy
| | - Valentina Villari
- CNR-IPCF Istituto per i Processi Chimico-Fisici, Consiglio Nazionale delle Ricerche, Viale F. Stagno d'Alcontres 37, I-98158, Messina, Italy
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Tan M, Horvàth L, Brunetto PS, Fromm KM. Trithiocarbonate-Functionalized PNiPAAm-Based Nanocomposites for Antimicrobial Properties. Polymers (Basel) 2018; 10:E665. [PMID: 30966699 PMCID: PMC6404129 DOI: 10.3390/polym10060665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 06/08/2018] [Accepted: 06/12/2018] [Indexed: 12/22/2022] Open
Abstract
In this study, four trithiocarbonate-functionalized PNiPAAms with different molecular weights were synthesized and used as a matrix to form composites with silver nanoparticles. Nanocomposites with several polymer-to-silver ratios P:Ag⁺ were prepared in order to evaluate the influence of silver loading. UV studies showed a thermoresponsive behavior of the nanocomposites with a thermo-reversibility according to cooling-heating cycles. Release kinetics demonstrated that the release of silver ions is mainly influenced by the size of the silver nanoparticles (AgNPs), which themselves depend on the polymer length. Antimicrobial tests against E. coli and S. aureus showed that some of the nanocomposites are antimicrobial and even full killing could be induced.
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Affiliation(s)
- Milène Tan
- Department of Chemistry, University of Fribourg, Chemin du Musée, 9, 1700 Fribourg, Switzerland.
| | - Lenke Horvàth
- Department of Chemistry, University of Fribourg, Chemin du Musée, 9, 1700 Fribourg, Switzerland.
| | - Priscilla S Brunetto
- Department of Chemistry, University of Fribourg, Chemin du Musée, 9, 1700 Fribourg, Switzerland.
| | - Katharina M Fromm
- Department of Chemistry, University of Fribourg, Chemin du Musée, 9, 1700 Fribourg, Switzerland.
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15
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Mancer D, Allemann E, Daoud K. Metformin hydrochloride microencapsulation by complex coacervation: Study of size distribution and encapsulation yield using response surface methodology. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.03.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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16
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Li J, Yang L, Fan X, Wang F, Zhang J, Wang Z. Multi-Responsive Behaviors of Copolymers Bearing N-Isopropylacrylamide with or without Phenylboronic Acid in Aqueous Solution. Polymers (Basel) 2018; 10:E293. [PMID: 30966328 PMCID: PMC6415023 DOI: 10.3390/polym10030293] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 02/27/2018] [Accepted: 03/06/2018] [Indexed: 11/16/2022] Open
Abstract
Continuing efforts to develop novel smart materials are anticipated to upgrade the quality of life of humans. Thermo-responsive poly(N-isopropylacrylamide) and glucose-responsive phenylboronic acid-typical representatives-are often integrated as multi-stimuli-sensitive materials, but few are available for side-by-side comparisons with their properties. In this study, both copolymers bearing N-isopropylacrylamide (NIPAAm), with or without 3-acrylamidophenylboronic acid (AAPBA), were synthesized by free radical polymerization, and characterized by Fourier transform infrared spectrometry, nuclear magnetic resonance hydrogen spectroscopy and gel permeation chromatography. Dynamic light scattering was used to analyze and compare the responsive behaviors of the copolymers in different aqueous solutions. Atomic force microscopy was also employed to investigate the apparent morphology changes with particle sizes. The results demonstrated that the introduction of NIPAAm endowed the composite materials with thermosensitivity, whereas the addition of AAPBA lowered the molecular weight of the copolymers, intensified the intermolecular aggregation of the nanoparticles, reduced the lower critical solution temperature (LCST) of the composites, and accordingly allowed the copolymers to respond to glucose. It was also concluded that the responding of smart copolymers to operating parameters can be activated only under special conditions, and copolymer dimension and conformation were affected by inter/intramolecular interactions.
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Affiliation(s)
- Jiaxing Li
- School of Environmental and Biological Engineering, Liaoning Shihua University, Fushun 113001, China.
| | - Lei Yang
- School of Environmental and Biological Engineering, Liaoning Shihua University, Fushun 113001, China.
| | - Xiaoguang Fan
- College of Engineering, Shenyang Agricultural University, Shenyang 110866, China.
| | - Fei Wang
- School of Environmental and Biological Engineering, Liaoning Shihua University, Fushun 113001, China.
| | - Jing Zhang
- School of Environmental and Biological Engineering, Liaoning Shihua University, Fushun 113001, China.
| | - Zhanyong Wang
- School of Environmental and Biological Engineering, Liaoning Shihua University, Fushun 113001, China.
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17
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Morphology and drug release behavior of N-isopropylacrylamide/acrylic acid copolymer as stimuli-responsive nanogels. IRANIAN POLYMER JOURNAL 2017. [DOI: 10.1007/s13726-017-0571-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Vancaeyzeele C, Olivier F, Petroffe G, Peralta S, Vidal F. Nanostructured Thermal Responsive Materials Synthesized by Soft Templating. ACS APPLIED MATERIALS & INTERFACES 2017; 9:12706-12718. [PMID: 28304154 DOI: 10.1021/acsami.7b00028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We capitalized herein the inherent tortuosity of bicontinuous microemulsion to conceive nanostructured drug-delivery devices. First, we show that it is possible to synthesize bicontinuous materials with continuous hydrophilic domains of the poly(N-isopropylacrylamide) (PNIPAM) network entangled with continuous hydrophobic polymer domains, with dual-phase continuity being imposed by the bicontinuous microemulsions used as a soft template. Particular attention is paid to the microemulsion formulations using a surfmer to preserve the one-to-one replication of the bicontinuous nanostructure after polymerization. These materials keep a volume phase transition with temperature that allows considering them as drug carriers for controlled release. PNIPAM, which plays the role of the active ingredient reservoir, is confined in the bicontinuous structure. As expected, the PNIPAM enclosure limits the surface area in contact with the releasing aqueous solution and thus slows down the desorption of aspirin, which is used as a model drug. The hydrophobic polymers play the role of in situ-created transport barriers without hindering it as all the loaded aspirin in this bicontinuous structure still remains available.
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Affiliation(s)
- Cedric Vancaeyzeele
- Laboratoire de Physicochimie des Polymères et des Interfaces (LPPI - EA 2528), I-Mat, Université de Cergy-Pontoise , 5 mail Gay-Lussac, 95031 Cergy-Pontoise, France
| | - Florian Olivier
- Laboratoire de Physicochimie des Polymères et des Interfaces (LPPI - EA 2528), I-Mat, Université de Cergy-Pontoise , 5 mail Gay-Lussac, 95031 Cergy-Pontoise, France
| | - Gwendoline Petroffe
- Laboratoire de Physicochimie des Polymères et des Interfaces (LPPI - EA 2528), I-Mat, Université de Cergy-Pontoise , 5 mail Gay-Lussac, 95031 Cergy-Pontoise, France
| | - Sebastien Peralta
- Laboratoire de Physicochimie des Polymères et des Interfaces (LPPI - EA 2528), I-Mat, Université de Cergy-Pontoise , 5 mail Gay-Lussac, 95031 Cergy-Pontoise, France
| | - Frederic Vidal
- Laboratoire de Physicochimie des Polymères et des Interfaces (LPPI - EA 2528), I-Mat, Université de Cergy-Pontoise , 5 mail Gay-Lussac, 95031 Cergy-Pontoise, France
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Lai E, Wang Y, Wei Y, Li G, Ma G. Effects of Cross-Link Density on Structures and Properties of Dual-Sensitive Semi-Interpenetrating Polymer Networks Hydrogel Microspheres. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201600596] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Enping Lai
- State Key Laboratory of Biochemical Engineering; Institute of Process Engineering; Chinese Academy of Sciences; Beijing 100190 P. R. China
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; College of Materials Science and Engineering; Donghua University; Shanghai 201620 P. R. China
| | - Yuxia Wang
- State Key Laboratory of Biochemical Engineering; Institute of Process Engineering; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Yi Wei
- State Key Laboratory of Biochemical Engineering; Institute of Process Engineering; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Guang Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; College of Materials Science and Engineering; Donghua University; Shanghai 201620 P. R. China
| | - Guanghui Ma
- State Key Laboratory of Biochemical Engineering; Institute of Process Engineering; Chinese Academy of Sciences; Beijing 100190 P. R. China
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Composition Distribution, Damping and Thermal Properties of the Thickness-Continuous Gradient Epoxy/Polyurethane Interpenetrating Polymer Networks. APPLIED SCIENCES-BASEL 2017. [DOI: 10.3390/app7020135] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Preparation and characterization of chitosan microparticles for immunoaffinity extraction and determination of enrofloxacin. Int J Biol Macromol 2016; 93:783-788. [PMID: 27640092 DOI: 10.1016/j.ijbiomac.2016.09.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 09/12/2016] [Accepted: 09/13/2016] [Indexed: 11/21/2022]
Abstract
The use of chitosan microparticles as chromatographic support has received much attention. In this study, the effects of process parameters, namely, chitosan molecular weight, chitosan concentration, molar ratio of amino group to aldehyde group, volume ratio of water to oil phase and stirring speed on the size and size distribution of chitosan microparticles and their application for immunoaffinity extraction were extensively investigated. Size distribution analysis indicated that the average diameter of the microparticles was 124μm with Span value of 1.1. The obtained microparticles exhibited low non-specific adsorption and kept stable in the pH range 4.0-10.0. Immunoaffinity chromatography (IAC) column was prepared by coupling antibody against enrofloxacin (ENR) with chitosan microparticles. Further characterization indicated that the binding capacity of the column was 4392ng ENR/mL gel and the variation of ENR extraction efficiency among columns was less than 5.2%. When challenged with ENR-fortified bovine milk samples, recoveries of ENR by immunoaffinity extraction were found to be in the range of 85.9% to 101.9%, demonstrated the feasibility of the prepared IAC columns for sample clean-up in ENR residue determination.
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Lv X, Huang Z, Shi M, Fan Y, Gao G. Self-gradient mechanism, morphology and damping analysis of a thickness continuous gradient epoxy–polyurethane interpenetrating polymer network. RSC Adv 2016. [DOI: 10.1039/c6ra13093c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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