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de Ávila Gonçalves S, da Fonsêca JHL, d'Ávila MA, Vieira RP. Synthesis of thermally and pH-responsive poly(2-(dimethylamino)ethyl methacrylate)-based hydrogel reinforced with cellulose nanocrystals for sustained drug release. Int J Biol Macromol 2024; 277:134168. [PMID: 39067729 DOI: 10.1016/j.ijbiomac.2024.134168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Revised: 07/15/2024] [Accepted: 07/24/2024] [Indexed: 07/30/2024]
Abstract
Hydrogels are widely employed in biomedical applications due to their high swelling potential, tailored mechanical properties, biocompatibility, and ability to incorporate drugs to modify their release behavior. This study explored the synthesis of dual stimuli-responsive composite hydrogels by combining poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) with 4, 8, and 12 % (w/w) of cellulose nanocrystals (CNC) through in-situ free-radical polymerization, modifying their properties for topical anti-inflammatory release. Although PDMAEMA-based hydrogels have been known for their responsiveness to pH and temperature stimuli, which are useful for modulating the release profile of drugs, their use as a matrix for anti-inflammatory topical applications remains unexplored. Thus, a comprehensive analysis of CNC concentration's impact on PDMAEMA-based hydrogel structure and physicochemical properties is provided. The incorporation of ibuprofen as an anti-inflammatory model was assessed, providing insights into the potential of these composite hydrogels for sustained drug delivery applications. Overall, the hydrogels exhibited homogenous CNC dispersion, with gel fraction higher than 70 % and ibuprofen load higher than 90 %. The rise in CNC concentration led to an increase hydrogel stiffness. Finally, the CNC incorporation also modified the ibuprofen release to a more sustained profile, following the Peppas-Sahlin model, which may be attractive for developing pharmaceutical devices for different therapeutical scenarios.
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Affiliation(s)
- Sayeny de Ávila Gonçalves
- Department of Bioprocess and Materials Engineering, School of Chemical Engineering, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil.
| | - Jéssica Heline Lopes da Fonsêca
- Department of Manufacturing and Materials Engineering, School of Mechanical Engineering, University of Campinas (UNICAMP), Campinas, Brazil
| | - Marcos Akira d'Ávila
- Department of Manufacturing and Materials Engineering, School of Mechanical Engineering, University of Campinas (UNICAMP), Campinas, Brazil
| | - Roniérik Pioli Vieira
- Department of Bioprocess and Materials Engineering, School of Chemical Engineering, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil.
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2
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Yilmaz RB, Chaabane Y, Mansard V. Development of a Soft Actuator from Fast Swelling Macroporous PNIPAM Gels for Smart Braille Device Applications in Haptic Technology. ACS APPLIED MATERIALS & INTERFACES 2023; 15:7340-7352. [PMID: 36706224 DOI: 10.1021/acsami.2c17835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The development of a cost-efficient braille device is a crucial challenge in haptic technology to improve the integration of visually impaired people. Exclusion of any group threatens the proper functioning of society. Commercially available braille devices still utilize piezoelectric actuators, which are expensive and bulky. The challenge of a more adapted braille device lies in the integration of a high number of actuators─on a millimeter scale─in order to independently move a matrix of pins acting as tactile cues. Unfortunately, no actuation strategy has been adapted to tackle this challenge. In this study, we develop a soft actuator based on a thermosensitive poly(N-isopropylacrylamide) (PNIPAM) gel. We introduce macroporosity to the gel (pores of 10 to 100 μm). It overcomes the diffusion─which is the limiting kinetic factor─and accelerates the gel response time from hours for the bulk gel to seconds for the macroporous gel. We study the properties of porous gels with various porosities. We also compare a mechanically reinforced nanocomposite gel (made of PNIPAM and Laponite clay) to a "classic" gel. As a result, we develop a fast-actuating gel with high cyclic performance. We then develop a single-pin braille setup, where actuation is controlled thanks to a swift temperature control of a macroporous gel cylinder. This new strategy offers a very promising actuation technology. It offers a simple and cost-efficient alternative to the current braille devices.
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Affiliation(s)
- Refik Baris Yilmaz
- CNRS, LAAS-CNRS, 7, avenue du Colonel Roche, BP 54200 31031 Toulouse Cedex 4, France
| | - Yosr Chaabane
- CNRS, LAAS-CNRS, 7, avenue du Colonel Roche, BP 54200 31031 Toulouse Cedex 4, France
| | - Vincent Mansard
- CNRS, LAAS-CNRS, 7, avenue du Colonel Roche, BP 54200 31031 Toulouse Cedex 4, France
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3
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Wu K, He X, Wang J, Pan T, He R, Kong F, Cao Z, Ju F, Huang Z, Nie L. Recent progress of microfluidic chips in immunoassay. Front Bioeng Biotechnol 2022; 10:1112327. [PMID: 36619380 PMCID: PMC9816574 DOI: 10.3389/fbioe.2022.1112327] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022] Open
Abstract
Microfluidic chip technology is a technology platform that integrates basic operation units such as processing, separation, reaction and detection into microchannel chip to realize low consumption, fast and efficient analysis of samples. It has the characteristics of small volume need of samples and reagents, fast analysis, low cost, automation, portability, high throughout, and good compatibility with other techniques. In this review, the concept, preparation materials and fabrication technology of microfluidic chip are described. The applications of microfluidic chip in immunoassay, including fluorescent, chemiluminescent, surface-enhanced Raman spectroscopy (SERS), and electrochemical immunoassay are reviewed. Look into the future, the development of microfluidic chips lies in point-of-care testing and high throughput equipment, and there are still some challenges in the design and the integration of microfluidic chips, as well as the analysis of actual sample by microfluidic chips.
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Affiliation(s)
- Kaimin Wu
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, China
| | - Xuliang He
- Zhuzhou People’s Hospital, Zhuzhou, China
| | - Jinglei Wang
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, China
| | - Ting Pan
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, China
| | - Ran He
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, China
| | - Feizhi Kong
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, China
| | - Zhenmin Cao
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, China
| | - Feiye Ju
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, China
| | - Zhao Huang
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, China
| | - Libo Nie
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, China,*Correspondence: Libo Nie,
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Salminen L, Karjalainen E, Aseyev V, Tenhu H. Phase Separation of Aqueous Poly(diisopropylaminoethyl methacrylate) upon Heating. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5135-5148. [PMID: 34752116 PMCID: PMC9069861 DOI: 10.1021/acs.langmuir.1c02224] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 10/18/2021] [Indexed: 06/13/2023]
Abstract
Poly(diisopropylaminoethyl methacrylate) (PDPA) is a pH- and thermally responsive water-soluble polymer. This study deepens the understanding of its phase separation behavior upon heating. Phase separation upon heating was investigated in salt solutions of varying pH and ionic strength. The effect of the counterion on the phase transition upon heating is clearly demonstrated for chloride-, phosphate-, and citrate-anions. Phase separation did not occur in pure water. The buffer solutions exhibited similar cloud points, but phase separation occurred in different pH ranges and with different mechanisms. The solution behavior of a block copolymer comprising poly(dimethylaminoethyl methacrylate) (PDMAEMA) and PDPA was investigated. Since the PDMAEMA and PDPA blocks phase separate within different pH- and temperature ranges, the block copolymer forms micelle-like structures at high temperature or pH.
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Affiliation(s)
- Linda Salminen
- Department
of Chemistry, University of Helsinki, P.O. Box 55, A.I. Virtasen aukio
1, FIN-00014 HY Helsinki, Finland
| | - Erno Karjalainen
- VTT
Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 VTT Espoo, Finland
| | - Vladimir Aseyev
- Department
of Chemistry, University of Helsinki, P.O. Box 55, A.I. Virtasen aukio
1, FIN-00014 HY Helsinki, Finland
| | - Heikki Tenhu
- Department
of Chemistry, University of Helsinki, P.O. Box 55, A.I. Virtasen aukio
1, FIN-00014 HY Helsinki, Finland
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Du W, Zhao Z, Zhang M, Jiang X, Zhang X. Preparation and characterization of mechanically robust and thermo-responsive hydrogel inspired by spring-like structure. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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6
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Wang X, Gou C, Gao C, Song Y, Zhang J, Huang J, Hui M. Synthesis of casein-γ-polyglutamic acid hydrogels by microbial transglutaminase-mediated gelation for controlled release of drugs. J Biomater Appl 2021; 36:237-245. [PMID: 34293946 DOI: 10.1177/08853282211011724] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Casein-based hydrogels were reported as biodegradability, biocompatibility, and non-toxic materials that had potential in drug delivery. At present, we prepared two kinds of casein/γ-PGA hybrid hydrogels, 1/5 and 1/9, based on the ratio of γ-PGA to casein. The hydrogels were crosslinked by microbial transglutaminase (MTG), the physicochemical properties of the casein/γ-PGA hydrogels were investigated by scanning electron microscopy (SEM) observation, differential scanning calorimetry (DSC) analysis, texture analysis, swelling ratio test, and stability test. The hydrogels showed a well-interconnected sparse and porous structure. The 1/5 casein/γ-PGA hydrogel was much stable, hard, and cohesive than the 1/9 casein/γ-PGA hydrogel, and the 1/5 casein/γ-PGA hydrogel showed a higher swelling ratio and lower degradation rate. To investigate in vitro release behavior, we chose the hydrophilic vitamin B12 and hydrophobic aspirin as the model drugs incorporated into the casein/γ-PGA hydrogels. The 1/5 casein/γ-PGA hydrogel exhibited a good drug release behavior.
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Affiliation(s)
- Xin Wang
- College of Bioengineering, Henan University of Technology, Zhengzhou, Henan, China
| | - Chenchen Gou
- College of Bioengineering, Henan University of Technology, Zhengzhou, Henan, China
| | - Chunyuan Gao
- College of Bioengineering, Henan University of Technology, Zhengzhou, Henan, China
| | - Yazhen Song
- College of Bioengineering, Henan University of Technology, Zhengzhou, Henan, China
| | - Jinming Zhang
- College of Bioengineering, Henan University of Technology, Zhengzhou, Henan, China
| | - Jihong Huang
- College of Bioengineering, Henan University of Technology, Zhengzhou, Henan, China
| | - Ming Hui
- College of Bioengineering, Henan University of Technology, Zhengzhou, Henan, China
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Shi K, Yang X, Xu J, Sha D, Wang B, Liu X, Liu Z, Ji X. Preparation of polyvinyl alcohol formaldehyde-g-poly(2-(dimethylamino)ethyl methacrylate) macroporous hydrogels and their dual thermo/pH-responsive behavior and antibacterial performance. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.104916] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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8
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Abedi F, Davaran S, Hekmati M, Akbarzadeh A, Baradaran B, Moghaddam SV. An improved method in fabrication of smart dual-responsive nanogels for controlled release of doxorubicin and curcumin in HT-29 colon cancer cells. J Nanobiotechnology 2021; 19:18. [PMID: 33422062 PMCID: PMC7797119 DOI: 10.1186/s12951-020-00764-6] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 12/26/2020] [Indexed: 02/06/2023] Open
Abstract
The combination therapy which has been proposed as the strategy for the cancer treatment could achieve a synergistic effect for cancer therapies and reduce the dosage of the applied drugs. On account of the the unique properties as the high absorbed water content, biocompatibility, and flexibility, the targeting nanogels have been considred as a suitable platform. Herein, a non-toxic pH/thermo-responsive hydrogel P(NIPAAm-co-DMAEMA) was synthesized and characterized through the free-radical polymerization and expanded upon an easy process for the preparation of the smart responsive nanogels; that is, the nanogels were used for the efficient and controlled delivery of the anti-cancer drug doxorubicin (DOX) and chemosensitizer curcumin (CUR) simultaneously like a promising strategy for the cancer treatment. The size of the nanogels, which were made, was about 70 nm which is relatively optimal for the enhanced permeability and retention (EPR) effects. The DOX and CUR co-loaded nanocarriers were prepared by the high encapsulation efficiency (EE). It is important to mention that the controlled drug release behavior of the nanocarriers was also investigated. An enhanced ability of DOX and CUR-loaded nanoformulation to induce the cell apoptosis in the HT-29 colon cancer cells which represented the greater antitumor efficacy than the single-drug formulations or free drugs was resulted through the In vitro cytotoxicity. Overall, according to the data, the simultaneous delivery of the dual drugs through the fabricated nanogels could synergistically potentiate the antitumor effects on the colon cancer (CC). ![]()
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Affiliation(s)
- Fatemeh Abedi
- Department of Organic Chemistry, Faculty of Pharmaceutical Chemistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.,Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Soodabeh Davaran
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. .,Department of Medicinal Chemistry, Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, Iran.
| | - Malak Hekmati
- Department of Organic Chemistry, Faculty of Pharmaceutical Chemistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Abolfazl Akbarzadeh
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.,Universal Scientific Education and Research Network (USERN), Tabriz, Iran
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Thermoresponsive Poly( N-Isopropylacrylamide- co-Dimethylaminoethyl Methacrylate) Microgel Aqueous Dispersions with Potential Antimicrobial Properties. Polymers (Basel) 2019; 11:polym11040606. [PMID: 30960590 PMCID: PMC6523738 DOI: 10.3390/polym11040606] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 03/25/2019] [Accepted: 03/29/2019] [Indexed: 02/06/2023] Open
Abstract
The work herein describes the preparation of thermoresponsive microgels with potential antimicrobial properties. Most of the work performed so far regarding microgels with antimicrobial activity, deals with the ability of microgels to carry and release antibiotics or antimicrobial agents (antimicrobial peptides). The originality of this work lies in the possibility of developing intrinsic antimicrobial microgels by copolymerization of the well-known thermoresponsive monomer, N-isopropylacrylamide (NIPAM) with dimethylaminoethyl methacrylate (DMAEMA), a water-soluble monomer, to form microgels via precipitation polymerization (radical polymerization). Due to the presence of a tertiary amine in the DMAEMA comonomer, microgels can be modified by N-alkylation reaction with methyl and butyl iodide. This quaternization confers positive charges to the microgel surfaces and thus the potential antimicrobial activity. The effect of DMAEMA content and its quaternization with both, methyl and butyl iodide is evaluated in terms of thermal and surface charge properties, as well as in the microgel size and viscoelastic behavior. Finally, a preliminary study of the antimicrobial activity against different microorganisms is also performed in terms of minimum inhibitory concentration (MIC). From this study we determined that in contrast with butylated microgels, methylated ones show potential antimicrobial activity and good physical properties besides of maintaining microgel thermo-responsiveness.
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10
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Preparation of the chitosan/poly(glutamic acid)/alginate polyelectrolyte complexing hydrogel and study on its drug releasing property. Carbohydr Polym 2018; 191:8-16. [DOI: 10.1016/j.carbpol.2018.02.065] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 02/20/2018] [Accepted: 02/21/2018] [Indexed: 01/26/2023]
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11
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Hu X, Wang Y, Zhang L, Xu M, Zhang J, Dong W. Dual-pH/Magnetic-Field-Controlled Drug Delivery Systems Based on Fe 3 O 4 @SiO 2 -Incorporated Salecan Graft Copolymer Composite Hydrogels. ChemMedChem 2017; 12:1600-1609. [PMID: 28857472 DOI: 10.1002/cmdc.201700428] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 08/20/2017] [Indexed: 01/02/2023]
Abstract
Salecan is a water-soluble extracellular β-glucan and has excellent physicochemical and biological properties for hydrogel preparation. In this study, a new pH/magnetic field dual-responsive hydrogel was prepared by the graft copolymerization of salecan with 4-pentenoic acid (PA) and N-hydroxyethylacrylamide (HEAA) in the presence of Fe3 O4 @SiO2 nanoparticles for doxorubicin hydrochloride (DOX) release. Integration of Fe3 O4 @SiO2 nanoparticles in salecan-g-poly(PA-co-HEAA) copolymers afforded magnetic sensitivity to the original material. DOX-loaded hydrogels exhibited a clear capacity for pH/magnetic field dual-responsive controlled drug release. Lowering the pH to acidic conditions or introducing an external magnetic field caused an enhancement in DOX release. This salecan-g-poly(PA-co-HEAA)/Fe3 O4 @SiO2 composite hydrogel is a promising drug carrier for magnetically targeted drug delivery with enhanced DOX cytotoxicity against A549 cells.
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Affiliation(s)
- Xinyu Hu
- Institute of Chemical Industry of Forestry Products, CAF, Nanjing, 210042, China
| | - Yongmei Wang
- Institute of Chemical Industry of Forestry Products, CAF, Nanjing, 210042, China
| | - Liangliang Zhang
- Institute of Chemical Industry of Forestry Products, CAF, Nanjing, 210042, China
| | - Man Xu
- Institute of Chemical Industry of Forestry Products, CAF, Nanjing, 210042, China
| | - Jianfa Zhang
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Wei Dong
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, 210094, China
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