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Synthesis and Characterization of a pH- and Temperature-Sensitive Fe 3O 4-SiO 2-Poly(NVCL-co-MAA) Nanocomposite for Controlled Delivery of Doxorubicin Anticancer Drug. Polymers (Basel) 2023; 15:polym15040968. [PMID: 36850252 PMCID: PMC9963235 DOI: 10.3390/polym15040968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/07/2023] [Accepted: 02/09/2023] [Indexed: 02/18/2023] Open
Abstract
This work reports the synthesis, characterization, and in vitro release studies of pH- and temperature-sensitive Fe3O4-SiO2-poly(NVCL-co-MAA) nanocomposite. Fe3O4 nanoparticles were prepared by chemical coprecipitation, coated with SiO2 by the Stöber method, and functionalized with vinyl groups. The copolymer poly(N-vinylcaprolactam-co-methacrylic acid) (poly(NVCL-co-MAA)) was grafted onto the functionalized Fe3O4-SiO2 nanoparticles by free radical polymerization. XRD, FTIR, TGA, VSM, and TEM techniques were performed to characterize the nanocomposite. The release behavior of Doxorubicin (DOX) loaded in the nanocomposite at pH 5.8 and 7.4, and two temperatures, 25 and 37 °C, was studied. According to the release studies, approximately 55% of DOX is released in 72 h at pH 7.4, regardless of temperature. At pH 5.8, 78% of DOX was released in 48 h at 25 °C, and when increasing the temperature to 37 °C, more than 95 % of DOX was released in 24 h. The DOX release data treated with Zero-order, first-order, Higuchi, and Korsmeyer-Peppas models showed that Higuchi's model best fits the data, indicating that the DOX is released by diffusion. The findings suggest that the synthesized nanocomposite may be useful as a DOX carrier in biomedical applications.
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Gautam B, Huang MR, Ali SA, Yan AL, Yu HH, Chen JT. Smart Thermoresponsive Electrospun Nanofibers with On-Demand Release of Carbon Quantum Dots for Cellular Uptake. ACS APPLIED MATERIALS & INTERFACES 2022; 14:40322-40330. [PMID: 35994422 DOI: 10.1021/acsami.2c10810] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Developing a smart responsive surface for on-demand delivery of organic, inorganic, and biological cargo in vitro cellular uptake is always in constant demand. Herein, we present carbon quantum dot (CQD)-loaded (poly(N-isopropylacrylamide) (PNIPAAm)/poly(methyl methacrylate (PMMA)) blend nanofiber sheets having a thermoresponsive nature. As a model cargo, fluorescent CQDs are used for the demonstration of the on-demand delivery mechanism. In addition, a thermoresponsive nature is produced by the PNIPAAm polymer in the nanofiber matrix while the PMMA polymer provides extra stability and firmness to the nanofibers against the sudden dissolution of the nanofibers in aqueous media. The synthesis of CQDs and their loading into a blend nanofiber matrix are confirmed using fluorescence spectrophotometry, transmission electron microscopy, and fluorescence microscopy. The morphologies and diameters of the nanofibers are analyzed by scanning electron microscopy. Burst effect analysis proves that 30% (w/w) PNIPAAm-containing nanofibers possess the highest stability with the least dissolution in aqueous media. Thermoresponsiveness of the nanofibers is further confirmed through water contact angle measurements. Quantitative fluorescence results show that more than 80% of loaded CQDs can be released upon thermal stimulation. The fluorescence micrographs reveal that the blend nanofiber sheets can effectively improve the cellular uptake of CQDs by simply increasing the local concentrations via applying thermal stimulation as the released mechanism.
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Affiliation(s)
- Bhaskarchand Gautam
- Department of Applied Chemistry and Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Meng-Ru Huang
- Department of Applied Chemistry and Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Syed Atif Ali
- Department of Applied Chemistry and Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
- Smart Organic Material Laboratory, Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
- Taiwan International Graduate Program (TIGP), Sustainable Chemical Science and Technology (SCST), Academia Sinica, Taipei 115, Taiwan
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Ai-Ling Yan
- Department of Applied Chemistry and Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Hsiao-Hua Yu
- Smart Organic Material Laboratory, Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
- Taiwan International Graduate Program (TIGP), Sustainable Chemical Science and Technology (SCST), Academia Sinica, Taipei 115, Taiwan
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Jiun-Tai Chen
- Department of Applied Chemistry and Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
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Liguori A, Pandini S, Rinoldi C, Zaccheroni N, Pierini F, Focarete ML, Gualandi C. Thermo-active Smart Electrospun Nanofibers. Macromol Rapid Commun 2021; 43:e2100694. [PMID: 34962002 DOI: 10.1002/marc.202100694] [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: 10/16/2021] [Revised: 12/15/2021] [Indexed: 11/10/2022]
Abstract
The recent burst of research on smart materials is a clear evidence of the growing interest of the scientific community, industry, and society in the field. The exploitation of the great potential of stimuli-responsive materials for sensing, actuation, logic, and control applications is favored and supported by new manufacturing technologies, such as electrospinning, that allows to endow smart materials with micro- and nano-structuration, thus opening up additional and unprecedented prospects. In this wide and lively scenario, this article systematically reviews the current advances in the development of thermo-active electrospun fibers and textiles, sorting them, according to their response to the thermal stimulus. Hence, several platforms including thermo-responsive systems, shape memory polymers, thermo-optically responsive systems, phase change materials, thermoelectric materials, and pyroelectric materials, have been described and critically discussed. The difference in active species and outputs of the aforementioned categories has been highlighted, evidencing the transversal nature of temperature stimulus. Moreover, the potential of novel thermo-active materials has been pointed out, revealing how their development could take to utmost interesting achievements. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Anna Liguori
- Department of Chemistry "G. Ciamician" and INSTM UdR of Bologna, University of Bologna, via Selmi 2, Bologna, 40126, Italy
| | - Stefano Pandini
- Department of Chemistry "G. Ciamician" and INSTM UdR of Bologna, University of Bologna, via Selmi 2, Bologna, 40126, Italy
| | - Chiara Rinoldi
- Department of Chemistry "G. Ciamician" and INSTM UdR of Bologna, University of Bologna, via Selmi 2, Bologna, 40126, Italy
| | - Nelsi Zaccheroni
- Department of Chemistry "G. Ciamician" and INSTM UdR of Bologna, University of Bologna, via Selmi 2, Bologna, 40126, Italy
| | - Filippo Pierini
- Department of Chemistry "G. Ciamician" and INSTM UdR of Bologna, University of Bologna, via Selmi 2, Bologna, 40126, Italy
| | - Maria Letizia Focarete
- Department of Chemistry "G. Ciamician" and INSTM UdR of Bologna, University of Bologna, via Selmi 2, Bologna, 40126, Italy
| | - Chiara Gualandi
- Department of Chemistry "G. Ciamician" and INSTM UdR of Bologna, University of Bologna, via Selmi 2, Bologna, 40126, Italy
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Parvathy PA, Ayobami AV, Raichur AM, Sahoo SK. Methacrylated alkali lignin grafted P(Nipam-Co-AAc) copolymeric hydrogels: Tuning the mechanical and stimuli-responsive properties. Int J Biol Macromol 2021; 192:180-196. [PMID: 34619273 DOI: 10.1016/j.ijbiomac.2021.09.183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/17/2021] [Accepted: 09/26/2021] [Indexed: 01/06/2023]
Abstract
The current study reports the preparation of lignin grafted temperature and pH responsive hydrogels through copolymerization of N-isopropylacrylamide, acrylic acid and varying amount of lignin methacrylate (LMA = 50, 100, 150 and 200 mg) as crosslinker adopting radical polymerization technique. Functional group and structural characterizations were carried out to confirm hydrogels synthesis and their network structure. The variation in pore size on addition of lignin revealed the tuning of pores as well as swelling capacity of the hydrogels by suitable amount of LMA. All LMA grafted hydrogels showed temperature responsive behavior and pH dependent sensitivity in swelling, with reduced equilibrium swelling capacity values compared to sample without lignin. In alkali medium at room temperature, the maximum swelling capacity with 48% higher retention was noticed, while a significant reduction in swelling was observed at 40 °C in all media. The addition of lignin still preserved the tensile strength up to 100 kPa and compressive load bearing ability up to 30 kPa in freeze dried state with adequate interfacial stress transfer. An increase in lignin concentration showed enhanced storage modulus (~two-fold increase), adequate loss modulus values and improved cell viability, which paves the way for possible biomedical applications.
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Affiliation(s)
- P A Parvathy
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India; Academy of Scientific and Innovative Research (ACSIR), Ghaziabad 201002, India
| | - Ajisafe V Ayobami
- Biomaterials and Nanobiotechnology lab, Department of Materials Engineering, Indian Institute of Science (IISc), Bangalore, India
| | - Ashok M Raichur
- Biomaterials and Nanobiotechnology lab, Department of Materials Engineering, Indian Institute of Science (IISc), Bangalore, India
| | - Sushanta K Sahoo
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India; Academy of Scientific and Innovative Research (ACSIR), Ghaziabad 201002, India.
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5
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Pan F, Amarjargal A, Altenried S, Liu M, Zuber F, Zeng Z, Rossi RM, Maniura-Weber K, Ren Q. Bioresponsive Hybrid Nanofibers Enable Controlled Drug Delivery through Glass Transition Switching at Physiological Temperature. ACS APPLIED BIO MATERIALS 2021; 4:4271-4279. [PMID: 35006839 DOI: 10.1021/acsabm.1c00099] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
To avoid excessive usage of antibiotics and antimicrobial agents, smart wound dressings permitting controlled drug release for treatment of bacterial infections are highly desired. In search of a sensitive stimulus to activate drug release under physiological conditions, we found that the glass transition temperature (Tg) of a polymer or polymer blend can be an ideal parameter because a thermal stimulus can regulate drug release at the physiological temperature of 37 °C. A well-tuned Tg for a controlled drug release from fibers at 37 °C was achieved by varying the blending ratio of Eudragit® RS 100 and poly(methyl methacrylate). Octenidine, an antimicrobial agent often used in wound treatment, was encapsulated into the polymer blend during the electrospinning process and evaluated for its controlled release based on modulation of temperature. The thermal switch of the nanofibrous membranes can be turned "on" at physiological temperature (37 °C) and "off" at room temperature (25 °C), conferring a controlled release of octenidine. It was found that octenidine can be released in an amount at least 8.5 times higher (25 mg·L-1) during the "on" stage compared to the "off" stage after 24 h, which was regulated by the wet Tg (34.8-36.5 °C). The "on"/"off" switch for controlled drug release can moreover be repeated at least 5 times. Furthermore, the fabricated nanofibrous membranes displayed a distinctive antibacterial activity, causing a log3 reduction of the viable cells for both Gram negative and positive pathogens at 37 °C, when the thermal switch was "on". This study forms the groundwork for a treatment concept where no external stimulus is needed for the release of antimicrobials at physiological conditions, and will help reduce the overuse of antibiotics by allowing controlled drug release.
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Affiliation(s)
- Fei Pan
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biointerfaces, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Altangerel Amarjargal
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland.,Power Engineering School, Mongolian University of Science and Technology, Baga Toiruu 34, 14191 Ulaanbaatar, Mongolia
| | - Stefanie Altenried
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biointerfaces, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Mengdi Liu
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biointerfaces, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland.,Department of Earth- and Environmental Sciences, Ludwig Maximilian University of Munich, Theresienstrasse 41, 80333 Munich, Germany
| | - Flavia Zuber
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biointerfaces, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Zhihui Zeng
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Cellulose & Wood Materials, Ueberlandstrasse 129, 8600 Duebendorf, Switzerland
| | - René M Rossi
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Katharina Maniura-Weber
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biointerfaces, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Qun Ren
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biointerfaces, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
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Rostamitabar M, Abdelgawad AM, Jockenhoevel S, Ghazanfari S. Drug-Eluting Medical Textiles: From Fiber Production and Textile Fabrication to Drug Loading and Delivery. Macromol Biosci 2021; 21:e2100021. [PMID: 33951278 DOI: 10.1002/mabi.202100021] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/30/2021] [Indexed: 12/16/2022]
Abstract
Drug-eluting medical textiles have recently gained great attention to be used in different applications due to their cost effectiveness and unique physical and chemical properties. Using various fiber production and textile fabrication technologies, fibrous constructs with the required properties for the target drug delivery systems can be designed and fabricated. This review summarizes the current advances in the fabrication of drug-eluting medical textiles. Different fiber production methods such as melt-, wet-, and electro-spinning, and textile fabrication techniques such as knitting and weaving are explained. Moreover, various loading processes of bioactive agents to obtain drug-loaded fibrous structures with required physicochemical and morphological properties, drug delivery mechanisms, and drug release kinetics are discussed. Finally, the current applications of drug-eluting fibrous systems in wound care, tissue engineering, and transdermal drug delivery are highlighted.
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Affiliation(s)
- Matin Rostamitabar
- Aachen-Maastricht Institute for Biobased Materials (AMIBM), Faculty of Science and Engineering, Maastricht University, Geleen, 6167 RD, The Netherlands.,Department of Biohybrid and Medical Textiles (BioTex), AME-Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, 52074, Germany
| | - Abdelrahman M Abdelgawad
- Aachen-Maastricht Institute for Biobased Materials (AMIBM), Faculty of Science and Engineering, Maastricht University, Geleen, 6167 RD, The Netherlands
| | - Stefan Jockenhoevel
- Aachen-Maastricht Institute for Biobased Materials (AMIBM), Faculty of Science and Engineering, Maastricht University, Geleen, 6167 RD, The Netherlands.,Department of Biohybrid and Medical Textiles (BioTex), AME-Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, 52074, Germany
| | - Samaneh Ghazanfari
- Aachen-Maastricht Institute for Biobased Materials (AMIBM), Faculty of Science and Engineering, Maastricht University, Geleen, 6167 RD, The Netherlands.,Department of Biohybrid and Medical Textiles (BioTex), AME-Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, 52074, Germany
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Amirsadeghi A, Khorram M, Hashemi SS. Preparation of multilayer electrospun nanofibrous scaffolds containing soluble eggshell membrane as potential dermal substitute. J Biomed Mater Res A 2021; 109:1812-1827. [PMID: 33763964 DOI: 10.1002/jbm.a.37174] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 12/24/2020] [Accepted: 03/12/2021] [Indexed: 12/31/2022]
Abstract
Electrospinning of natural and synthetic polymers has shown to be a great candidate for the fabrication of tissue engineering scaffolds due to their similarity to the nanofibrous structure of natural extracellular matrix (ECM). Moreover, the addition of ECM-like proteins could enhance the biocompatibility of these scaffolds. In this study, soluble eggshell protein (SEP) was first extracted and synthesized from the raw eggshell membrane. The characteristics and biocompatibility of the extracted SEP were evaluated using attenuated total reflectance-Fourier transform infrared (ATR-FTIR) analysis and 3-(4,5- dimethylthiazol-2-yl-2,5-diphenyltetrazolium bromide) (MTT) assay. For scaffolds fabrication, a three-layer nanofibrous composite structure was produced using the electrospinning technique. The outer layers composed of polyvinyl alcohol, chitosan, and extracted SEP while the middle layer composed of polyethylene oxide, gelatin, and zinc oxide nanoparticles (ZnO-NPs). For each layer, the electrospinning parameters were adjusted to form bead-free fibers. To improve fibers' stability against body fluids, the produced fibers were crosslinked using glutaraldehyde vapor. Several techniques such as scanning electron microscopy (SEM), energy dispersive X-ray, ATR-FTIR, swelling, tensile test, in vitro biodegradation, and MTT assay were implemented to evaluate the physical, chemical, and biological characterization of the fabricated fibers. The results showed that crosslinked fibers have adequate stability in water, suitable mechanical properties, and promising water uptake capacity. The MTT results also revealed that SEP and ZnO-NPs could increase scaffolds biocompatibility. Moreover, SEM photographs of cultured fibroblasts cells on the scaffolds showed that cells were well attached on the scaffolds and preserve their natural spindle shapes. Altogether, our findings demonstrated that the produced three-layer composite scaffolds are potential candidates for skin tissue engineering.
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Affiliation(s)
- Armin Amirsadeghi
- School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran
| | - Mohammad Khorram
- School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran
| | - Seyeddeh-Sara Hashemi
- Burn and Wound Healing Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Current Nanocarrier Strategies Improve Vitamin B12 Pharmacokinetics, Ameliorate Patients' Lives, and Reduce Costs. NANOMATERIALS 2021; 11:nano11030743. [PMID: 33809596 PMCID: PMC8001893 DOI: 10.3390/nano11030743] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 12/17/2022]
Abstract
Vitamin B12 (VitB12) is a naturally occurring compound produced by microorganisms and an essential nutrient for humans. Several papers highlight the role of VitB12 deficiency in bone and heart health, depression, memory performance, fertility, embryo development, and cancer, while VitB12 treatment is crucial for survival in inborn errors of VitB12 metabolism. VitB12 is administrated through intramuscular injection, thus impacting the patients’ lifestyle, although it is known that oral administration may meet the specific requirement even in the case of malabsorption. Furthermore, the high-dose injection of VitB12 does not ensure a constant dosage, while the oral route allows only 1.2% of the vitamin to be absorbed in human beings. Nanocarriers are promising nanotechnology that can enable therapies to be improved, reducing side effects. Today, nanocarrier strategies applied at VitB12 delivery are at the initial phase and aim to simplify administration, reduce costs, improve pharmacokinetics, and ameliorate the quality of patients’ lives. The safety of nanotechnologies is still under investigation and few treatments involving nanocarriers have been approved, so far. Here, we highlight the role of VitB12 in human metabolism and diseases, and the issues linked to its molecule properties, and discuss how nanocarriers can improve the therapy and supplementation of the vitamin and reduce possible side effects and limits.
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Castillo-Henríquez L, Castro-Alpízar J, Lopretti-Correa M, Vega-Baudrit J. Exploration of Bioengineered Scaffolds Composed of Thermo-Responsive Polymers for Drug Delivery in Wound Healing. Int J Mol Sci 2021; 22:1408. [PMID: 33573351 PMCID: PMC7866792 DOI: 10.3390/ijms22031408] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/13/2021] [Accepted: 01/27/2021] [Indexed: 02/06/2023] Open
Abstract
Innate and adaptive immune responses lead to wound healing by regulating a complex series of events promoting cellular cross-talk. An inflammatory response is presented with its characteristic clinical symptoms: heat, pain, redness, and swelling. Some smart thermo-responsive polymers like chitosan, polyvinylpyrrolidone, alginate, and poly(ε-caprolactone) can be used to create biocompatible and biodegradable scaffolds. These processed thermo-responsive biomaterials possess 3D architectures similar to human structures, providing physical support for cell growth and tissue regeneration. Furthermore, these structures are used as novel drug delivery systems. Locally heated tumors above the polymer lower the critical solution temperature and can induce its conversion into a hydrophobic form by an entropy-driven process, enhancing drug release. When the thermal stimulus is gone, drug release is reduced due to the swelling of the material. As a result, these systems can contribute to the wound healing process in accelerating tissue healing, avoiding large scar tissue, regulating the inflammatory response, and protecting from bacterial infections. This paper integrates the relevant reported contributions of bioengineered scaffolds composed of smart thermo-responsive polymers for drug delivery applications in wound healing. Therefore, we present a comprehensive review that aims to demonstrate these systems' capacity to provide spatially and temporally controlled release strategies for one or more drugs used in wound healing. In this sense, the novel manufacturing techniques of 3D printing and electrospinning are explored for the tuning of their physicochemical properties to adjust therapies according to patient convenience and reduce drug toxicity and side effects.
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Affiliation(s)
- Luis Castillo-Henríquez
- National Laboratory of Nanotechnology (LANOTEC), National Center for High Technology (CeNAT), 1174-1200 San José, Costa Rica;
- Physical Chemistry Laboratory, Faculty of Pharmacy, University of Costa Rica, 11501-2060 San José, Costa Rica
| | - Jose Castro-Alpízar
- Laboratory of Pharmaceutical Technology, Faculty of Pharmacy, University of Costa Rica, 11501-2060 San José, Costa Rica;
| | - Mary Lopretti-Correa
- Nuclear Research Center, Faculty of Science, Universidad de la República (UdelaR), 11300 Montevideo, Uruguay;
| | - José Vega-Baudrit
- National Laboratory of Nanotechnology (LANOTEC), National Center for High Technology (CeNAT), 1174-1200 San José, Costa Rica;
- Laboratory of Polymers (POLIUNA), Chemistry School, National University of Costa Rica, 86-3000 Heredia, Costa Rica
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Mahdieh Z, Holian A. Electrospun fibers loaded with ball‐milled poly(n‐isopropylacrylamide) microgel particles for smart delivery applications. J Appl Polym Sci 2020. [DOI: 10.1002/app.49786] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Zahra Mahdieh
- Materials Science Program, Department of Biomedical and Pharmaceutical SciencesUniversity of Montana Missoula Montana USA
| | - Andrij Holian
- Center for Environmental Health Sciences, Department of Biomedical and Pharmaceutical SciencesUniversity of Montana Missoula Montana USA
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Li J, Zhu J, Jia L, Ma Y, Wu H. Aqueous-based electrospun P(NIPAAm- co-AAc)/RSF medicated fibrous mats for dual temperature- and pH-responsive drug controlled release. RSC Adv 2019; 10:323-331. [PMID: 35492552 PMCID: PMC9047333 DOI: 10.1039/c9ra08832f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 12/17/2019] [Indexed: 12/27/2022] Open
Abstract
This paper presents a green method for fabricating dual temperature- and pH-responsive electrospun fibrous mats from an aqueous-based blend poly(N-isopropylacrylamide-co-acrylic acid) (P(NIPAAm-co-AAc)) and regenerated silk fibroin (RSF) by employing electrospinning technique. P(NIPAAm-co-AAc) was synthesized by free radical solution polymerization and its low critical solution temperature (LCST) was in the physiological range (38.8 °C). The P(NIPAAm-co-AAc)/RSF fibers were prepared by electrospinning technology in the presence of the crosslinking agents (EDC·HCl and NHS) with water as solvent. After in situ crosslinking and water-annealing process, the water-stable composite fibrous mats were obtained. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) were used to analyze the crosslinking process. Temperature and pH dual stimuli-responsive swelling-shrinking behavior of the fibrous mats were observed when the temperature was below and above the LCST of the copolymer at different pHs. In addition, rhodamine B-loaded the fibrous mats also showed dual temperature and pH controlled release behavior, demonstrating the potential use of the fibrous mats for "smart" controlled drug delivery applications.
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Affiliation(s)
- Juan Li
- College of Materials Science and Engineering, Taiyuan University of Technology Taiyuan 030024 China
| | - Jingxin Zhu
- College of Materials Science and Engineering, Taiyuan University of Technology Taiyuan 030024 China
| | - Lan Jia
- College of Materials Science and Engineering, Taiyuan University of Technology Taiyuan 030024 China
| | - Yanlong Ma
- College of Materials Science and Engineering, Taiyuan University of Technology Taiyuan 030024 China
| | - Haijuan Wu
- College of Materials Science and Engineering, Taiyuan University of Technology Taiyuan 030024 China
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12
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Chen W, Wang C, Gao Y, Wu Y, Wu G, Shi X, Du Y, Deng H. Incorporating chitin derived glucosamine sulfate into nanofibers via coaxial electrospinning for cartilage regeneration. Carbohydr Polym 2019; 229:115544. [PMID: 31826435 DOI: 10.1016/j.carbpol.2019.115544] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 10/23/2019] [Accepted: 10/26/2019] [Indexed: 12/30/2022]
Abstract
Chitin is the second abundant natural polysaccharide, and the development of chitin and its derivatives have received more and more attention. Glucosamine sulfate (GAS) obtained by the hydrolysis of chitin can promote the growth of chondrocytes. The coaxial electrospinning technology had been utilized to encapsulated GAS into the core of polycaprolactone (PCL) nanofibers. It could protect the GAS from the environment and allow it to release sustainably over time. From the results of scanning electron microscopy (SEM), PCL/GAS nanofibers performed a typical fiber scaffold surface. Transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX) results confirmed the feasibility to use coaxial electrospinning to load GAS. Tensile tests exhibited that PCL/GAS mats could be stretched more than twice its own length. Besides, the cell experiments illustrated that PCL/GAS had a significant effect on the proliferation and growth of rat articular chondrocytes, attesting its prospect for cartilage regeneration.
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Affiliation(s)
- Wei Chen
- Wuhan Sports University, Wuhan, Hubei 430079, China; Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass Resource Chemistry and Environmental Biotechnology, Hubei Engineering Center of Natural Polymers-based Medical Materials, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China
| | - Chi Wang
- Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass Resource Chemistry and Environmental Biotechnology, Hubei Engineering Center of Natural Polymers-based Medical Materials, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China
| | - Yuying Gao
- Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass Resource Chemistry and Environmental Biotechnology, Hubei Engineering Center of Natural Polymers-based Medical Materials, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China
| | - Yang Wu
- Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass Resource Chemistry and Environmental Biotechnology, Hubei Engineering Center of Natural Polymers-based Medical Materials, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China.
| | - Guomin Wu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China.
| | - Xiaowen Shi
- Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass Resource Chemistry and Environmental Biotechnology, Hubei Engineering Center of Natural Polymers-based Medical Materials, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China
| | - Yumin Du
- Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass Resource Chemistry and Environmental Biotechnology, Hubei Engineering Center of Natural Polymers-based Medical Materials, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China
| | - Hongbing Deng
- Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass Resource Chemistry and Environmental Biotechnology, Hubei Engineering Center of Natural Polymers-based Medical Materials, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China.
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13
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Xu Y, Ajji A, Heuzey MC. Response behaviors and mechanical strength of thermal responsive hydrogels fabricated by electrospinning. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121880] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Banihashem S, Nikpour Nezhati M, Panahi HA, Shakeri-Zadeh A. Synthesis of novel chitosan-g-PNVCL nanofibers coated with gold-gold sulfide nanoparticles for controlled release of cisplatin and treatment of MCF-7 breast cancer. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2019.1683557] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Solmaz Banihashem
- Department of Chemistry, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | | | - Homayon Ahmad Panahi
- Department of Chemistry, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Ali Shakeri-Zadeh
- Medical Physics Department, School of Medicine Iran, University of Medical Sciences (IUMS), Tehran, Iran
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15
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Shah M, Shah LA, Khan MS, Nasar MQ, Rasheed S. Synthesis, fabrication and characterization of polymer microgel/photochromic dye-based sandwiched sensors. IRANIAN POLYMER JOURNAL 2019. [DOI: 10.1007/s13726-019-00719-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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16
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Pan N, Qin J, Fan Y, Li Z, Song B. Long time release of water soluble drug from hydrophilic nanofibrous material. J Appl Polym Sci 2019. [DOI: 10.1002/app.47922] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Nan Pan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of EducationCollege of Chemistry and Materials Science, Northwest University Xi'an 710069 Shaanxi People's Republic of China
| | - Juanrong Qin
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of EducationCollege of Chemistry and Materials Science, Northwest University Xi'an 710069 Shaanxi People's Republic of China
| | - Yuwei Fan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of EducationCollege of Chemistry and Materials Science, Northwest University Xi'an 710069 Shaanxi People's Republic of China
| | - Zeke Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of EducationCollege of Chemistry and Materials Science, Northwest University Xi'an 710069 Shaanxi People's Republic of China
| | - Botao Song
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of EducationCollege of Chemistry and Materials Science, Northwest University Xi'an 710069 Shaanxi People's Republic of China
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17
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Ghasemkhah F, Latifi M, Hadjizadeh A, Shokrgozar MA. Potential core-shell designed scaffolds with a gelatin-based shell in achieving controllable release rates of proteins for tissue engineering approaches. J Biomed Mater Res A 2019; 107:1393-1405. [PMID: 30724475 DOI: 10.1002/jbm.a.36653] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 01/18/2019] [Accepted: 02/04/2019] [Indexed: 11/12/2022]
Abstract
The biomaterials design as core-shell structures opens a new door to the release of susceptible biomolecules in a controllable manner and enables to place natural biomaterials as shell layers to impart the effective biofunctional features at surfaces. In this study, core-shell designed scaffolds were prepared using coaxial electrospinning with hybrid of gelatin (GT)/polycaprolactone (PCL) at different weight ratios as their shell and protein solution as their core, followed by cross-linking to impart controllable release rates, tunable mechanical properties, and enhanced cytocompatibility. SEM, FM, and TEM confirmed the successful production of uniform core-shell nanofibers and homogeneous protein distribution. Results showed that an increase in GT proportion in the shell resulted in a decrease in fiber diameter, an increase of Young's modulus, and an intense burst release of BSA 0.2% which could be controlled through cross-linking. The mechanical tests revealed that the GT/PCL combining and cross-linking improved mechanical properties which correlated with an increase in spreading and proliferation of HUVECs. A slight burst release was also detected from BSA 0.05% and EGF encapsulated GT73P-cross-linked scaffold which demonstrated their applicability for a controlled release of dilute proteins. We were able to successfully incorporate two types of protein with different concentrations without supporting polymer into the GT shell to provide scaffolds possessing tunable mechanical properties and controllable release rates through blending with PCL at different ratios and/or cross-linking. These findings are promising to promote delivery systems of angiogenic growth factors that are needed a sustained release with different rates at each angiogenesis stage. © 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part A, 2019.
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Affiliation(s)
- Farzaneh Ghasemkhah
- Nanotechnology institute, Amirkabir University of Technology, Tehran, Iran.,Textile Engineering Department, Textile Excellence & Research Centers, Amirkabir University of Technology, Tehran, Iran
| | - Masoud Latifi
- Textile Engineering Department, Textile Excellence & Research Centers, Amirkabir University of Technology, Tehran, Iran
| | - Afra Hadjizadeh
- Biomedical Engineering Department, Amirkabir University of Technology, Tehran, Iran
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18
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Li H, Liu K, Williams GR, Wu J, Wu J, Wang H, Niu S, Zhu LM. Dual temperature and pH responsive nanofiber formulations prepared by electrospinning. Colloids Surf B Biointerfaces 2018; 171:142-149. [PMID: 30025376 DOI: 10.1016/j.colsurfb.2018.07.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 06/21/2018] [Accepted: 07/10/2018] [Indexed: 10/28/2022]
Abstract
We report a dual-responsive drug delivery system prepared by electrospinning. Blend fibers of poly(N-vinylcaprolactam) (PNVCL) and ethyl cellulose (EC) were first prepared, with the aim of developing thermoresponsive sustained release formulations. Eudragit L100-based fibers were then generated to yield pH-sensitive materials. Attempts to produce three-polymer fibers of EC, PNVCL and Eudragit were unsuccessful, and therefore hybrid mats containing two fiber populations (one made of PNVCL/EC, one comprising Eudragit) were instead fabricated by twin-jet electrospinning. Analogous drug-loaded versions of all the formulations were also prepared containing ketoprofen (KET). The fibers were largely smooth and homogeneous, and the addition of KET did not affect their morphology. The PNVCL-containing fiber mats changed from being hydrophilic to hydrophobic when the temperature was increased through the lower critical solution temperature of 33 °C. In vitro drug release profiles showed that the hybrid fiber mats were able to combine the properties of the three polymers, exhibiting both pH-sensitive and thermosensitive properties with sustained release. In addition, they were found to be nontoxic and suitable for cell growth. This study therefore demonstrates that PNVCL/EC/KET-Eudragit/KET multicomponent fiber mats comprise effective and biocompatible materials for targeted drug delivery.
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Affiliation(s)
- Heyu Li
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
| | - Kailin Liu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
| | - Gareth R Williams
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.
| | - Junzi Wu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
| | - Jianrong Wu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
| | - Haijun Wang
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
| | - Shiwei Niu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
| | - Li-Min Zhu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China; Key Lab of Science & Technology of Eco-Textiles, Ministry of Education, Donghua University, China.
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19
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Mu C, Wu Q. Electrospun Poly(ε-caprolactone) Composite Nanofibers with Controlled Release of Cis-Diamminediiodoplatinum for a Higher Anticancer Activity. NANOSCALE RESEARCH LETTERS 2017; 12:318. [PMID: 28460490 PMCID: PMC5408359 DOI: 10.1186/s11671-017-2092-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 04/20/2017] [Indexed: 06/07/2023]
Abstract
Poly(ε-caprolactone) (PCL) nanofibers were prepared by electrospun, on which the cis-diamminediiodoplatinum (cis-DIDP) was loaded, cis-DIDP@PCL, which effectively overcame cis-DIDP from dissociation or premature interaction with other bimolecular groups. Meanwhile, the toxicity and cross-resistance of cis-DIDP were reduced greatly. In vitro, cis-DIDP released from the PCL nanofibers eradicated the tumor cells around twice times more than free cis-DIDP, even better than cisplatin. Furthermore, cis-DIDP@PCL could controllably release cis-DIDP in different sustained-release solution based on our experiment.
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Affiliation(s)
- Chaojing Mu
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, Shanghai, 200092, China
| | - Qingsheng Wu
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, Shanghai, 200092, China.
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20
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Temperature-responsive PLLA/PNIPAM nanofibers for switchable release. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 72:293-300. [DOI: 10.1016/j.msec.2016.11.028] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 11/07/2016] [Indexed: 12/13/2022]
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21
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Liu M, Du H, Zhang W, Zhai G. Internal stimuli-responsive nanocarriers for drug delivery: Design strategies and applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:1267-1280. [DOI: 10.1016/j.msec.2016.11.030] [Citation(s) in RCA: 130] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 10/26/2016] [Accepted: 11/08/2016] [Indexed: 11/29/2022]
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22
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Rychter M, Baranowska-Korczyc A, Lulek J. Progress and perspectives in bioactive agent delivery via electrospun vascular grafts. RSC Adv 2017. [DOI: 10.1039/c7ra04735e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The review discusses the progress in the design and synthesis of bioactive agents incorporated into vascular grafts obtained by the electrospinning process.
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Affiliation(s)
- Marek Rychter
- Department of Pharmaceutical Technology
- Faculty of Pharmacy
- Poznan University of Medical Sciences
- 60-780 Poznan
- Poland
| | | | - Janina Lulek
- Department of Pharmaceutical Technology
- Faculty of Pharmacy
- Poznan University of Medical Sciences
- 60-780 Poznan
- Poland
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23
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Ranganath AS, Ganesh VA, Sopiha K, Sahay R, Baji A. Thermoresponsive electrospun membrane with enhanced wettability. RSC Adv 2017. [DOI: 10.1039/c6ra27848e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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24
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Liu L, Bai S, Yang H, Li S, Quan J, Zhu L, Nie H. Controlled release from thermo-sensitive PNVCL-co-MAA electrospun nanofibers: The effects of hydrophilicity/hydrophobicity of a drug. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 67:581-589. [PMID: 27287157 DOI: 10.1016/j.msec.2016.05.083] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 05/13/2016] [Accepted: 05/18/2016] [Indexed: 12/13/2022]
Abstract
The thermo-sensitive copolymer poly(N-vinylcaprolactam-co-methacrylic acid) (PNVCL-co-MAA) was synthesized by free radical polymerization and the resulting nanofibers were fabricated using an electrospinning process. The molecular weight of the copolymer was adjusted by varying the content of methacrylic acid (MAA) while keeping that of N-vinylcaprolactam (NVCL) constant. Hydrophilic captopril and hydrophobic ketoprofen were used as model drugs, and PNVCL-co-MAA nanofibers were used as the drug carrier to investigate the effects of drug on its release properties from nanofibers at different temperatures. The results showed that slow release over several hours was observed at 40°C (above the lower critical solution temperature (LCST) of PNVCL-co-MAA), while the drugs exhibited a burst release of several seconds at 20°C (below the LCST). Drug release slowed with increasing content of the hydrophobic monomer NVCL. The hydrophilic captopril was released at a higher rate than the hydrophobic ketoprofen. The drug release characteristics were dependent on the temperature, the portion of hydrophilic groups and hydrophobic groups in the copolymer and hydrophilicity/hydrophobicity of drug. Study on the mechanism of release showed that Korsmeyer-Peppas model as a major drug release mechanism. Given these results, the PNVCL-co-MAA copolymers are proposed to have useful applications in intellectual drug delivery systems.
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Affiliation(s)
- Lin Liu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China
| | - Shaoqing Bai
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Huiqin Yang
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Shubai Li
- Changzhou Institute of Engineering Technology, Changzhou 213164, China
| | - Jing Quan
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Limin Zhu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Huali Nie
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China.
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25
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Baskakova A, Awwad S, Jiménez JQ, Gill H, Novikov O, Khaw PT, Brocchini S, Zhilyakova E, Williams GR. Electrospun formulations of acyclovir, ciprofloxacin and cyanocobalamin for ocular drug delivery. Int J Pharm 2016; 502:208-18. [DOI: 10.1016/j.ijpharm.2016.02.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 02/10/2016] [Accepted: 02/11/2016] [Indexed: 12/20/2022]
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26
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Hu J, Li HY, Williams GR, Yang HH, Tao L, Zhu LM. Electrospun Poly(N-isopropylacrylamide)/Ethyl Cellulose Nanofibers as Thermoresponsive Drug Delivery Systems. J Pharm Sci 2016; 105:1104-12. [DOI: 10.1016/s0022-3549(15)00191-4] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 11/05/2015] [Accepted: 11/23/2015] [Indexed: 10/22/2022]
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27
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Guarino V, Cirillo V, Ambrosio L. Bicomponent electrospun scaffolds to design extracellular matrix tissue analogs. Expert Rev Med Devices 2015; 13:83-102. [PMID: 26619260 DOI: 10.1586/17434440.2016.1126505] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
In the last decade, bicomponent fibers have been proposed to fabricate bio-inspired systems for tissue repair, regenerative medicine, medical healthcare and clinical applications. In comparison with monocomponent fibers, key advantage concerns their ability of self-adapting to the physiological conditions through an extended pattern of signals--morphological, chemical and physical ones--confined at the single fiber level. Hydrophobic/hydrophilic phases may be variously organized by tuneable processing modes (i.e., blending, core/shell, interweaving) thus offering different benefits in terms of biological activity, fluid sorption and molecular transport properties (first generation). The possibility to efficiently graft cell-adhesive proteins and peptide sequences onto the fiber surface mediated by spacers or impregnating hydrogels allows to trigger cell late activities by a controlled and sustained release in vitro of specific biomolecules (i.e., morphogens, growth factors). Here, we introduce an overview of current approaches based on bicomponent fiber use as extra cellular matrix analogs with cell-instructive functions and hierarchal organization of living tissues.
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Affiliation(s)
- Vincenzo Guarino
- a Institute for Polymers, Composites and Biomaterials, Department of Chemical Sciences & Materials Technology , National Research Council of Italy , 80125 Naples , Italy
| | - Valentina Cirillo
- a Institute for Polymers, Composites and Biomaterials, Department of Chemical Sciences & Materials Technology , National Research Council of Italy , 80125 Naples , Italy
| | - Luigi Ambrosio
- a Institute for Polymers, Composites and Biomaterials, Department of Chemical Sciences & Materials Technology , National Research Council of Italy , 80125 Naples , Italy
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28
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Jiang S, Liu F, Lerch A, Ionov L, Agarwal S. Unusual and Superfast Temperature-Triggered Actuators. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:4865-4870. [PMID: 26186175 DOI: 10.1002/adma.201502133] [Citation(s) in RCA: 143] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 06/05/2015] [Indexed: 06/04/2023]
Abstract
A superfast actuator based on a bilayer fibrous mat shows folding/unfolding and the formation of 3D structures in a fraction of a second. The actuation is reversible for many cycles without losing its form and size, with unfolding at room temperature and folding above 35 °C. The system is promising for making 3D bioscaffolds, electrodes, and micro-/macroactuators.
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Affiliation(s)
- Shaohua Jiang
- Macromolecular Chemistry II and Bayreuth Center for Colloids and Interfaces, Universität Bayreuth, Universitätsstraße 30, 95440, Bayreuth, Germany
| | - Fangyao Liu
- Macromolecular Chemistry II and Bayreuth Center for Colloids and Interfaces, Universität Bayreuth, Universitätsstraße 30, 95440, Bayreuth, Germany
| | - Arne Lerch
- Macromolecular Chemistry II and Bayreuth Center for Colloids and Interfaces, Universität Bayreuth, Universitätsstraße 30, 95440, Bayreuth, Germany
| | - Leonid Ionov
- Leibniz Institute of Polymer Research Dresden, Hohe Str. 6, D-01069, Dresden, Germany
| | - Seema Agarwal
- Macromolecular Chemistry II and Bayreuth Center for Colloids and Interfaces, Universität Bayreuth, Universitätsstraße 30, 95440, Bayreuth, Germany
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29
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Tenório-Neto ET, Guilherme MR, Lima-Tenório MK, Scariot DB, Nakamura CV, Rubira AF, Kunita MH. Synthesis and characterization of a pH-responsive poly(ethylene glycol)-based hydrogel: acid degradation, equilibrium swelling, and absorption kinetic characteristics. Colloid Polym Sci 2015. [DOI: 10.1007/s00396-015-3744-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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30
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31
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Echeverría MG, Pardini OR, Debandi MV, François NJ, Daraio ME, Amalvy JI. Polyurethane/Poly(2-(Diethyl Amino)Ethyl Methacrylate) blend for drug delivery applications. POLIMEROS 2015. [DOI: 10.1590/0104-1428.1716] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
| | - Oscar Ricardo Pardini
- Universidad Nacional de La Plata, Argentina; Comisión de investigaciones Científicas de la Provincia de Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
| | | | | | | | - Javier Ignacio Amalvy
- Universidad Nacional de La Plata, Argentina; Comisión de investigaciones Científicas de la Provincia de Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina; Universidad Nacional de La Plata, Argentina; Universidad Tecnológica Nacional, Argentina
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32
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Guo JH, Liu Y, Lv ZJ, Wei WJ, Guan X, Guan QL, Leng ZQ, Zhao JY, Miao H, Liu J. Potential Neurogenesis of Human Adipose-Derived Stem Cells on Electrospun Catalpol-Loaded Composite Nanofibrous Scaffolds. Ann Biomed Eng 2015; 43:2597-608. [PMID: 25824369 DOI: 10.1007/s10439-015-1311-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Accepted: 03/23/2015] [Indexed: 12/19/2022]
Abstract
Catalpol, a natural active ingredient extracted from the traditional Chinese medicine, was verified exhibiting beneficial effects on neural differentiation compared with commonly used chemical inducers by our previous studies. The aim of this study was to evaluate the effects of catalpol-loaded scaffold on guiding neuronal differentiation of human adipose tissue-derived stem cells (hASCs). Fabrication technique of catalpol loading into the electrospun poly(lactic-co-glycolic acid)/multi-walled carbon nanotubes/silk fibroin nanofibrous scaffolds was successfully established. The topographical and mechanical properties of the nanofibers scaffolds were characterized by scanning electron microscopy and tensile instrument, respectively. In vitro catalpol release was studied in phosphate-buffered solution at 37 °C. Immunnocytochemistry, RT-PCR, and western blot assays were performed to estimate hASCs neuronal differentiation, and it was shown that catalpol has significantly upregulated the expressions of βIII-tubulin and Nissl. Our experiments demonstrated that catalpol, as a traditional Chinese medicine extract, could be encapsulated into composite nanofibers and induce differentiation of hASCs into neural-like cells, which might offer new avenues in nerve regeneration.
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Affiliation(s)
- Jian-Hui Guo
- Regenerative Medicine Center, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, People's Republic of China.,Institute of Integrative Medicine, Dalian Medical University, Dalian, 116044, People's Republic of China
| | - Yang Liu
- Regenerative Medicine Center, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, People's Republic of China.,Institute of Integrative Medicine, Dalian Medical University, Dalian, 116044, People's Republic of China
| | - Zheng-Jun Lv
- Queen Mary University of London, London, E1 4NS, UK
| | - Wen-Juan Wei
- Regenerative Medicine Center, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, People's Republic of China
| | - Xin Guan
- Regenerative Medicine Center, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, People's Republic of China
| | - Qing-Lin Guan
- Center Laboratory, Affiliated Zhongshan Hospital of Dalian University, Dalian, 116001, People's Republic of China
| | - Zhi-Qian Leng
- Regenerative Medicine Center, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, People's Republic of China
| | - Jing-Yuan Zhao
- Regenerative Medicine Center, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, People's Republic of China
| | - Hui Miao
- Regenerative Medicine Center, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, People's Republic of China
| | - Jing Liu
- Regenerative Medicine Center, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, People's Republic of China. .,Institute of Integrative Medicine, Dalian Medical University, Dalian, 116044, People's Republic of China.
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33
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Muntimadugu E, Jain A, Khan W. Stimuli Responsive Carriers: Magnetically, Thermally and pH Assisted Drug Delivery. ADVANCES IN DELIVERY SCIENCE AND TECHNOLOGY 2015. [DOI: 10.1007/978-3-319-11355-5_10] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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34
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Li X, Zhong H, Li X, Jia F, Cheng Z, Zhang L, Yin J, An L, Guo L. Synthesis of attapulgite/N-isopropylacrylamide and its use in drug release. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 45:170-5. [DOI: 10.1016/j.msec.2014.08.056] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 07/23/2014] [Accepted: 08/29/2014] [Indexed: 01/22/2023]
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35
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Chen M, Li YF, Besenbacher F. Electrospun nanofibers-mediated on-demand drug release. Adv Healthc Mater 2014; 3:1721-32. [PMID: 24891134 DOI: 10.1002/adhm.201400166] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 05/06/2014] [Indexed: 12/21/2022]
Abstract
A living system has a complex and accurate regulation system with intelligent sensor-processor-effector components to enable the release of vital bioactive substances on demand at a specific site and time. Stimuli-responsive polymers mimic biological systems in a crude way where an external stimulus results in a change in conformation, solubility, or alternation of the hydrophilic/hydrophobic balance, and consequently release of a bioactive substance. Electrospinning is a straightforward and robust method to produce nanofibers with the potential to incorporate drugs in a simple, rapid, and reproducible process. This feature article emphasizes an emerging area using an electrospinning technique to generate biomimetic nanofibers as drug delivery devices that are responsive to different stimuli, such as temperature, pH, light, and electric/magnetic field for controlled release of therapeutic substances. Although at its infancy, the mimicry of these stimuli-responsive nanofibers to the function of the living systems includes both the fibrous structural feature and bio-regulation function as an on demand drug release depot. The electrospun nanofibers with extracellular matrix morphology intrinsically guide cellular drug uptake, which will be highly desired to translate the promise of drug delivery for the clinical success.
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Affiliation(s)
- Menglin Chen
- Interdisciplinary Nanoscience Center; Aarhus University; DK-8000 Aarhus Denmark
| | - Yan-Fang Li
- Interdisciplinary Nanoscience Center; Aarhus University; DK-8000 Aarhus Denmark
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Yuan H, Li B, Liang K, Lou X, Zhang Y. Regulating drug release from pH- and temperature-responsive electrospun CTS-g-PNIPAAm/poly(ethylene oxide) hydrogel nanofibers. Biomed Mater 2014; 9:055001. [DOI: 10.1088/1748-6041/9/5/055001] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Yu H, Jia Y, Yao C, Lu Y. PCL/PEG core/sheath fibers with controlled drug release rate fabricated on the basis of a novel combined technique. Int J Pharm 2014; 469:17-22. [DOI: 10.1016/j.ijpharm.2014.04.045] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 04/13/2014] [Accepted: 04/17/2014] [Indexed: 11/17/2022]
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Li YF, Rubert M, Aslan H, Yu Y, Howard KA, Dong M, Besenbacher F, Chen M. Ultraporous interweaving electrospun microfibers from PCL-PEO binary blends and their inflammatory responses. NANOSCALE 2014; 6:3392-3402. [PMID: 24531205 DOI: 10.1039/c3nr06197c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Production of one dimensional nanomaterials with secondary morphology exhibiting unique functions is challenging. Here we report for the first time that a nanoscale immiscible polymer blend solution electrojet can assemble into ultraporous interweaving microfibers. This intriguingly novel morphology originated from a blend of polycaprolactone (PCL) and polyethylene oxide (PEO) in a DCM-DMF mixed solution when the ratio between each component reached a threshold and when the electrospinning parameters were delicately controlled. The morphology, crystallinity, surface chemistry and wettabilities were characterized to understand the mechanism of formation. The interplay of the two semi-crystalline polymers and the pair of solvents/non-solvents with the electrospinning processing parameters was found to be critical for the formation of the unique structure. Furthermore, the interesting combination of biocompatible, biodegradable PCL with protein-resistant PEO motivated us to assess its inflammation responses on the RAW 264.7 macrophage cell line. All fibers were found to be biocompatible with low inflammation potential upon incubation, while compared with pure PCL nanofibers; the unique interweaving microfibers induced a slightly higher inflammatory reaction.
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Affiliation(s)
- Yan-Fang Li
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C, Denmark.
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Hong MC, Ahn H, Choi MC, Lee Y, Kim J, Rhee H. Pd nanoparticles immobilized on PNIPAM-halloysite: highly active and reusable catalyst for Suzuki-Miyaura coupling reactions in water. Appl Organomet Chem 2014. [DOI: 10.1002/aoc.3103] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Myeng Chan Hong
- Department of Chemistry and Applied Chemistry; Hanyang University; 1271 Sa-3-Dong, Sangrok-gu Ansan Kyunggi-do 426-791 Korea
| | - Hyunseok Ahn
- Department of Bionanotechnology; Hanyang University; 1271 Sa-3-Dong, Sangrok-gu Ansan Kyunggi-do 426-791 Korea
| | - Myung Chan Choi
- Department of Chemical Engineering; Hanyang University; 1271 Sa-3-Dong, Sangrok-gu Ansan Kyunggi-do 426-791 Korea
| | - Yongwoo Lee
- Department of Chemistry and Applied Chemistry; Hanyang University; 1271 Sa-3-Dong, Sangrok-gu Ansan Kyunggi-do 426-791 Korea
| | - Jongsik Kim
- Department of Chemistry; Dong-A University; 550 Hadan-Dong, Saha-gu Busan 604-714 Korea
| | - Hakjune Rhee
- Department of Chemistry and Applied Chemistry; Hanyang University; 1271 Sa-3-Dong, Sangrok-gu Ansan Kyunggi-do 426-791 Korea
- Department of Bionanotechnology; Hanyang University; 1271 Sa-3-Dong, Sangrok-gu Ansan Kyunggi-do 426-791 Korea
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Song F, Shi WT, Dong XT, Han X, Wang XL, Chen SC, Wang YZ. Fennel-like nanoaggregates based on polysaccharide derivatives and their application in drug delivery. Colloids Surf B Biointerfaces 2014; 113:501-4. [DOI: 10.1016/j.colsurfb.2013.09.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 09/12/2013] [Accepted: 09/13/2013] [Indexed: 11/16/2022]
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Chan A, Orme RP, Fricker RA, Roach P. Remote and local control of stimuli responsive materials for therapeutic applications. Adv Drug Deliv Rev 2013; 65:497-514. [PMID: 22820529 DOI: 10.1016/j.addr.2012.07.007] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Revised: 06/28/2012] [Accepted: 07/06/2012] [Indexed: 12/25/2022]
Abstract
Materials offering the ability to change their characteristics in response to presented stimuli have demonstrated application in the biomedical arena, allowing control over drug delivery, protein adsorption and cell attachment to materials. Many of these smart systems are reversible, giving rise to finer control over material properties and biological interaction, useful for various therapeutic treatment strategies. Many smart materials intended for biological interaction are based around pH or thermo-responsive materials, although the use of magnetic materials, particularly in neural regeneration, has increased over the past decade. This review draws together a background of literature describing the design principles and mechanisms of smart materials. Discussion centres on recent literature regarding pH-, thermo-, magnetic and dual responsive materials, and their current applications for the treatment of neural tissue.
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Naturally and synthetic smart composite biomaterials for tissue regeneration. Adv Drug Deliv Rev 2013; 65:471-96. [PMID: 22465488 DOI: 10.1016/j.addr.2012.03.009] [Citation(s) in RCA: 210] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Revised: 03/01/2012] [Accepted: 03/07/2012] [Indexed: 11/23/2022]
Abstract
The development of smart biomaterials for tissue regeneration has become the focus of intense research interest. More opportunities are available by the composite approach of combining the biomaterials in the form of biopolymers and/or bioceramics either synthetic or natural. Strategies to provide smart capabilities to the composite biomaterials primarily seek to achieve matrices that are instructive/inductive to cells, or that stimulate/trigger target cell responses that are crucial in the tissue regeneration processes. Here, we review in-depth, recent developments concerning smart composite biomaterials available for delivery systems of biofactors and cells and scaffolding matrices in tissue engineering. Smart composite designs are possible by modulating the bulk and surface properties that mimic the native tissues, either in chemical (extracellular matrix molecules) or in physical properties (e.g. stiffness), or by introducing external therapeutic molecules (drugs, proteins and genes) within the structure in a way that allows sustainable and controllable delivery, even time-dependent and sequential delivery of multiple biofactors. Responsiveness to internal or external stimuli, including pH, temperature, ionic strength, and magnetism, is another promising means to improve the multifunctionality in smart scaffolds with on-demand delivery potential. These approaches will provide the next-generation platforms for designing three-dimensional matrices and delivery systems for tissue regenerative applications.
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Wang Y, Qin J, Wei Y, Li C, Ma G. Preparation strategies of thermo-sensitive P(NIPAM-co-AA) microspheres with narrow size distribution. POWDER TECHNOL 2013. [DOI: 10.1016/j.powtec.2012.04.060] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Lv C, Wang Z, Wang P, Tang X. Photodegradable polyesters for triggered release. Int J Mol Sci 2012; 13:16387-99. [PMID: 23208376 PMCID: PMC3546696 DOI: 10.3390/ijms131216387] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Revised: 11/14/2012] [Accepted: 11/16/2012] [Indexed: 11/16/2022] Open
Abstract
Photodegradable polyesters were synthesized with a photolabile monomer 2-nitrophenylethylene glycol and dioyl chlorides with different lengths. These polymers can be assembled to form polymeric particles with encapsulation of target substances. Light activation can degrade these particles and release payloads in both aqueous solutions and RAW 264.7 cells.
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Affiliation(s)
- Cong Lv
- State Key Laboratory of Natural and Biomimetic Drugs, the School of Pharmaceutical Sciences, Peking University, No. 38, Xueyuan Road, Beijing 100191, China; E-Mails: (C.L.); (Z.W.); (P.W.)
| | - Zhen Wang
- State Key Laboratory of Natural and Biomimetic Drugs, the School of Pharmaceutical Sciences, Peking University, No. 38, Xueyuan Road, Beijing 100191, China; E-Mails: (C.L.); (Z.W.); (P.W.)
| | - Peng Wang
- State Key Laboratory of Natural and Biomimetic Drugs, the School of Pharmaceutical Sciences, Peking University, No. 38, Xueyuan Road, Beijing 100191, China; E-Mails: (C.L.); (Z.W.); (P.W.)
| | - Xinjing Tang
- State Key Laboratory of Natural and Biomimetic Drugs, the School of Pharmaceutical Sciences, Peking University, No. 38, Xueyuan Road, Beijing 100191, China; E-Mails: (C.L.); (Z.W.); (P.W.)
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Lv C, Wang Z, Wang P, Tang X. Photodegradable polyurethane self-assembled nanoparticles for photocontrollable release. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:9387-9394. [PMID: 22646923 DOI: 10.1021/la301534h] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Light-responsive drug delivery systems are particularly appealing that are capable of releasing active molecules at the appropriate site and rate. We synthesized a series of photodegradable polymers that can form nanoparticles for drug encapsulation. These particles in aqueous solutions are stable in buffers with different pHs or at evaluated temperatures, while light can trigger the crash of particles and the release of encapsulated substances. The release efficiency can reach up to 90% based on Nile red fluorescence intensity upon 15 min light irradiation. Nanoparticle uptake by phagocytic cells and light-triggered release in cells were observed by fluorescence emission of the hydrolyzed fluorescein diacetate upon photoinduced degradation of these nanoparticles. No significant toxicity of these nanoparticles was found at the concentrations up to 1000 μg/mL before or after light irradiation. Further encapsulation and triggered release of a bioactive model drug (Tagalsin G) was evaluated for RAW 264.7 cells. Tagalsin G encapsulated in nanoparticles did not show cytotoxity to cells, while light triggered the release of Tagalsin G increasing cell death dramatically from 9% to 67%. Our model studies show a new promising strategy to trigger drug release in cells.
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Affiliation(s)
- Cong Lv
- State Key Laboratory of Natural and Biomimetic Drugs, the School of Pharmaceutical Sciences, Peking University, No. 38, Xueyuan Rd., Beijing 100191, China
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Yang N, Chen L, Yang MK, Bi SX, He XL, Zhu ZY, Yu ML. In vitro study of the interactions of galactosylated thermo-responsive hydrogels with cells. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2011.12.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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