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Bai MY, Chen TH, Wang YC, Lai YJ. Transformation of theranostic alginate-based microbubbles from raspberry-like to core-shell-like microbubbles and in vitro studies. RSC Adv 2022; 12:31943-31949. [PMID: 36380958 PMCID: PMC9641574 DOI: 10.1039/d2ra06298d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 10/26/2022] [Indexed: 11/11/2022] Open
Abstract
In this study alginate-based microbubbles with a raspberry-like or core-shell-like morphology and with an average particle size of 553.6 ± 69.6 μm were synthesized; this was done through a novel procedure of transforming the structure with a 40 kHz ultrasonication which also stimulated the release of the components inside. Through the use of the electrospray technique in conjunction with agitation processes, components such as shikonin (SHK) and indocyanine green (ICG) were simultaneously encapsulated in alginate microbubbles to produce SHK-ICG alginate microbubbles; these microbubbles had half-maximal inhibitory concentrations of approximately 2.08 and 4.43 μM toward CP70 and SKOV3 ovarian cancer-cell lines, respectively, in an in vitro cell model. Moreover, these SHK-ICG alginate microbubbles enhanced brightness by 2.5 fold in ultrasound imaging relative to CaCl2 medium only. In conclusion, SHK-ICG alginate microbubbles have promise for use in theranostics.
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Affiliation(s)
- Meng-Yi Bai
- Graduate Institute of Biomedical Engineering, National Taiwan University of Science and Technology No. 43, Keelung Rd, Sec. 4, Da'an Dist. Taipei City 10607 Taiwan
- Adjunct Appointment to the Departmnet of Biomedical Engineering, National Defense Medical Centre Taipei 11490 Taiwan
| | - Tsai-Hsuan Chen
- Graduate Institute of Biomedical Engineering, National Taiwan University of Science and Technology No. 43, Keelung Rd, Sec. 4, Da'an Dist. Taipei City 10607 Taiwan
| | - Yu-Chi Wang
- Department of Obstetric and Gynecology, Tri-Service General Hospital, National Defense Medical Centre Taiwan
| | - Yu-Ju Lai
- Department of Obstetric and Gynecology, Tri-Service General Hospital, National Defense Medical Centre Taiwan
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2
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Wu G, Hui X, Hu L, Bai Y, Rahaman A, Yang XF, Chen C. Recent advancement of bioinspired nanomaterials and their applications: A review. Front Bioeng Biotechnol 2022; 10:952523. [PMID: 36159672 PMCID: PMC9494199 DOI: 10.3389/fbioe.2022.952523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/13/2022] [Indexed: 11/24/2022] Open
Abstract
With the advancement in the field of nanotechnology, different approaches for the synthesis of nanomaterials have been formulated, among which the bioinspired or biomimetic nanoplatforms have been utilized for different biomedical applications. In this context, bioinspired or biomimetic nanoparticles (NPs) have been synthesized in which the inspiration for synthesis is taken from nature or its components. Innovations in bioengineering tools and bio-conjugation chemistry have enabled scientists to develop novel types of such nanoplatforms. They have several advantages over normal synthesis protocols. In this review, we 1) summarized nanomaterial types and their advancements in bioinspired nanotechnology therapies; 2) discussed the major types, novel preparation methods, and synthesis progress of NPs in current biomedical fields; 3) gave a brief account of the need for synthesizing NPs via a bioinspired route rather than their common route; 4) highlighted the updated information on the biomimetic synthesis of different types of NPs; and 5) provided future perspectives in the synthesis of novel NPs for their potential applications in biomedical sciences.
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Affiliation(s)
- Gang Wu
- Department of Critical Care Medicine, Maoming People’s Hospital, Maoming, Guangdong Province, China
| | - Xiaodan Hui
- Department of Critical Care Medicine, Maoming People’s Hospital, Maoming, Guangdong Province, China
| | - Linhui Hu
- Department of Critical Care Medicine, Maoming People’s Hospital, Maoming, Guangdong Province, China
- Center of Scientific Research, Maoming People’s Hospital, Maoming, Guangdong Province, Guangdong Province, China
| | - Yunpeng Bai
- Department of Critical Care Medicine, Maoming People’s Hospital, Maoming, Guangdong Province, China
- Center of Scientific Research, Maoming People’s Hospital, Maoming, Guangdong Province, Guangdong Province, China
| | - Abdul Rahaman
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China
| | - Xing-Fen Yang
- School of Public Health, Southern Medical University, Guangzhou, China
| | - Chunbo Chen
- Department of Critical Care Medicine, Maoming People’s Hospital, Maoming, Guangdong Province, China
- Department of Intensive Care Unit of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Department of Critical Care Medicine, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
- *Correspondence: Chunbo Chen,
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Cesur S, Cam ME, Sayın FS, Su S, Harker A, Edirisinghe M, Gunduz O. Metformin-Loaded Polymer-Based Microbubbles/Nanoparticles Generated for the Treatment of Type 2 Diabetes Mellitus. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5040-5051. [PMID: 34096296 DOI: 10.1021/acs.langmuir.1c00587] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Type 2 diabetes mellitus (T2DM) is a chronic metabolic disease that is increasingly common all over the world with a high risk of progressive hyperglycemia and high microvascular and macrovascular complications. The currently used drugs in the treatment of T2DM have insufficient glucose control and can carry detrimental side effects. Several drug delivery systems have been investigated to decrease the side effects and frequency of dosage, and also to increase the effect of oral antidiabetic drugs. In recent years, the use of microbubbles in biomedical applications has greatly increased, and research into microactive carrier bubbles continues to generate more and more clinical interest. In this study, various monodisperse polymer nanoparticles at different concentrations were produced by bursting microbubbles generated using a T-junction microfluidic device. Morphological analysis by scanning electron microscopy, molecular interactions between the components by FTIR, drug release by UV spectroscopy, and physical analysis such as surface tension and viscosity measurement were carried out for the particles generated and solutions used. The microbubbles and nanoparticles had a smooth outer surface. When the microbubbles/nanoparticles were compared, it was observed that they were optimized with 0.3 wt % poly(vinyl alcohol) (PVA) solution, 40 kPa pressure, and a 110 μL/min flow rate, thus the diameters of the bubbles and particles were 100 ± 10 μm and 70 ± 5 nm, respectively. Metformin was successfully loaded into the nanoparticles in these optimized concentrations and characteristics, and no drug crystals and clusters were seen on the surface. Metformin was released in a controlled manner at pH 1.2 for 60 min and at pH 7.4 for 240 min. The process and structures generated offer great potential for the treatment of T2DM.
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Affiliation(s)
| | - Muhammet Emin Cam
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, U.K
| | | | | | - Anthony Harker
- London Centre for Nanotechnology and Department of Physics & Astronomy, University College London, London WC1E 6BT, U.K
| | - Mohan Edirisinghe
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, U.K
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4
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Cesur S, Cam ME, Sayin FS, Gunduz O. Electrically controlled drug release of donepezil and BiFeO3 magnetic nanoparticle-loaded PVA microbubbles/nanoparticles for the treatment of Alzheimer's disease. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.102977] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Chiu HI, Lim V. Wheat Germ Agglutinin-Conjugated Disulfide Cross-Linked Alginate Nanoparticles as a Docetaxel Carrier for Colon Cancer Therapy. Int J Nanomedicine 2021; 16:2995-3020. [PMID: 33911862 PMCID: PMC8075318 DOI: 10.2147/ijn.s302238] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 03/18/2021] [Indexed: 12/22/2022] Open
Abstract
PURPOSE In chemotherapy, oral administration of drug is limited due to lack of drug specificity for localized colon cancer cells. The inability of drugs to differentiate cancer cells from normal cells induces side effects. Colonic targeting with polymeric nanoparticulate drug delivery offers high potential strategies for delivering hydrophobic drugs and fewer side effects to the target site. Disulfide cross-linked polymers have recently acquired high significance due to their potential to degrade in reducing colon conditions while resisting the upper gastrointestinal tract's hostile environment. The goal of this project is, therefore, to develop pH-sensitive and redox-responsive fluorescein-labeled wheat germ agglutinin (fWGA)-mounted disulfide cross-linked alginate nanoparticles (fDTP2) directly targeting docetaxel (DTX) in colon cancer cells. METHODS fDTP2 was prepared by mounting fWGA on DTX-loaded nanoparticles (DTP2) using the two-step carbodiimide method. Morphology of fDTP2 was examined using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Dynamic light scattering (DLS) study was carried out to determine the mean diameter, polydispersity index (PDI) and zeta potential of fDTP2. Cellular uptake efficiency was examined using fluorescence microplate reader. Biocompatibility and active internalization of fDTP2 were conducted on HT-29. RESULTS fDTP2 was found to exhibit a DTX loading efficiency of 19.3%. SEM and TEM tests revealed spherical nanoparticles. The in vitro DTX release test showed a cumulative release of 54.7%. From the DLS study, fDTP2 reported a 277.7 nm mean diameter with PDI below 0.35 and -1.0 mV zeta potential. HT-29 which was fDTP2-treated demonstrated lower viability than L929 with a half maximal inhibitory concentration (IC50) of 34.7 µg/mL. HT-29 (33.4%) internalized fDTP2 efficiently at 2 h incubation. The study on HT-29 active internalization of nanoparticles through fluorescence and confocal imaging indicated such. CONCLUSION In short, fDTP2 demonstrated promise as a colonic drug delivery DTX transporter.
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Affiliation(s)
- Hock Ing Chiu
- Integrative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, Kepala Batas, Penang, Malaysia
| | - Vuanghao Lim
- Integrative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, Kepala Batas, Penang, Malaysia
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Han Y, Xu X, Liu F, Wei W, Liu Z. Study of the theory of microbubble bursting to obtain bio-inspired alginate nanoparticles. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124494] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Mutlu B, Farhan M, Kucuk I. T-Shaped Microfluidic Junction Processing of Porous Alginate-Based Films and Their Characteristics. Polymers (Basel) 2019; 11:E1386. [PMID: 31450763 PMCID: PMC6780642 DOI: 10.3390/polym11091386] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 08/15/2019] [Accepted: 08/20/2019] [Indexed: 02/07/2023] Open
Abstract
In this work, highly monodisperse porous alginate films from bubble bursting were formed on a glass substrate at ambient temperature, by a T-shaped microfluidic junction device method using polyethylene glycol (PEG) stearate and phospholipid as precursors in some cases. Various polymer solution concentrations and feeding liquid flow rates were applied for the generation of monodisperse microbubbles, followed by the conversion of the bubbles to porous film structures on glass substrates. In order to compare the physical properties of polymeric solutions, the effects of alginate, PEG stearate (surfactant), and phospholipid concentrations on the flowability of the liquid in a T-shaped microfluidic junction device were studied. To tailor microbubble diameter and size distribution, a method for controlling the thinning process of the bubbles' shell was also explored. In order to control pore size, shape, and surface as well as internal structure morphologies in the scalable forming of alginate polymeric films, the effect of the feeding liquid's flow rate and concentrations of PEG-stearate and phospholipid was also studied. Digital microscopy images revealed that the as-formed alginate films at the flow rate of 100 µL·min-1 and the N2 gas pressure of 0.8 bar have highly monodisperse microbubbles with a polydispersity index (PDI) of approximately 6.5%. SEM captures also revealed that the as-formed alginate films with high PDI value have similar monodisperse porous surface and internal structure morphologies, with the exception that the as-formed alginate films with the help of phospholipids were mainly formed under our experimental environment. From the Fourier-transform infrared spectroscopy (FTIR), Differential scanning calorimetry (DSC) and X-ray diffraction (XRD) measurements, we concluded that no chemical composition changes, thermal influence, and crystal structural modifications were observed due to the T-shaped microfluidic junction device technique. The method used in this work could expand and enhance the use of alginate porous films in a wide range of bioengineering applications, especially in tissue engineering and drug delivery, such as studying release behaviors to different internal and surface morphologies.
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Affiliation(s)
- Betul Mutlu
- Graduate School of Natural and Applied Sciences, Bursa Technical University, Bursa 16310, Turkey
| | - Muhammad Farhan
- Department of Pharmaceutics, Bahauddin Zakariya University, Multan 60800, Pakistan
| | - Israfil Kucuk
- Institute of Nanotechnology, Gebze Technical University, Gebze 41400, Turkey.
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Karimpoor M, Yebra-Fernandez E, Parhizkar M, Orlu M, Craig D, Khorashad JS, Edirisinghe M. Alginate foam-based three-dimensional culture to investigate drug sensitivity in primary leukaemia cells. J R Soc Interface 2018; 15:20170928. [PMID: 29695605 PMCID: PMC5938583 DOI: 10.1098/rsif.2017.0928] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Accepted: 03/28/2018] [Indexed: 01/14/2023] Open
Abstract
The development of assays for evaluating the sensitivity of leukaemia cells to anti-cancer agents is becoming an important aspect of personalized medicine. Conventional cell cultures lack the three-dimensional (3D) structure of the bone marrow (BM), the extracellular matrix and stromal components which are crucial for the growth and survival of leukaemia stem cells. To accurately predict the sensitivity of the leukaemia cells in an in vitro assay a culturing system containing the essential components of BM is required. In this study, we developed a porous calcium alginate foam-based scaffold to be used for 3D culture. The new 3D culture was shown to be cell compatible as it supported the proliferation of both normal haematopoietic and leukaemia cells. Our cell differential assay for myeloid markers showed that the porous foam-based 3D culture enhanced myeloid differentiation in both leukaemia and normal haematopoietic cells compared to two-dimensional culture. The foam-based scaffold reduced the sensitivity of the leukaemia cells to the tested antileukaemia agents in K562 and HL60 leukaemia cell line model and also primary myeloid leukaemia cells. This observation supports the application of calcium alginate foams as scaffold components of the 3D cultures for investigation of sensitivity to antileukaemia agents in primary myeloid cells.
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Affiliation(s)
- Mahroo Karimpoor
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK
- Centre for Haematology, Department of Medicine, Imperial College, Hammersmith Hospital, Du Cane Road, London W12 0NN, UK
- School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK
| | - Eva Yebra-Fernandez
- Molecular Pathology, North West London Pathology, Hammersmith Hospital, London, W12 0HS, UK
| | - Maryam Parhizkar
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK
| | - Mine Orlu
- School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK
| | - Duncan Craig
- School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK
| | - Jamshid S Khorashad
- Centre for Haematology, Department of Medicine, Imperial College, Hammersmith Hospital, Du Cane Road, London W12 0NN, UK
- Molecular Pathology, North West London Pathology, Hammersmith Hospital, London, W12 0HS, UK
| | - Mohan Edirisinghe
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK
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9
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Ran R, Sun Q, Baby T, Wibowo D, Middelberg AP, Zhao CX. Multiphase microfluidic synthesis of micro- and nanostructures for pharmaceutical applications. Chem Eng Sci 2017. [DOI: 10.1016/j.ces.2017.01.008] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Spadari CDC, Lopes LB, Ishida K. Potential Use of Alginate-Based Carriers As Antifungal Delivery System. Front Microbiol 2017; 8:97. [PMID: 28194145 PMCID: PMC5276814 DOI: 10.3389/fmicb.2017.00097] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 01/13/2017] [Indexed: 12/19/2022] Open
Abstract
Fungal infections have become a major public health problem, growing in number and severity in recent decades due to an increase of immunocompromised patients. The use of therapeutic agents available to treat these fungal infections is limited by their toxicity, low bioavailability, antifungal resistance, and high cost of treatment. Thus, it becomes extremely important to search for new therapeutic options. The use of polymeric systems as drug carriers has emerged as a promising alternative to conventional formulations for antifungals. Alginate is a natural polymer that has been explored in the last decade for development of drug delivery systems due to its non-toxicity, biodegradability, biocompatibility, low cost, mucoadhesive, and non-immunogenic properties. Several antifungal agents have been incorporated in alginate-based delivery systems, including micro and nanoparticles, with great success, displaying promising in vitro and in vivo results for antifungal activities, reduction in the toxicity and the total drug dose used in the treatment, and improved bioavailability. This review aims at discussing the potential use and benefits of alginate-based nanocarriers and other delivery systems containing antifungal agents in the therapy of fungal infections.
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Affiliation(s)
- Cristina de Castro Spadari
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo São Paulo, Brazil
| | - Luciana B Lopes
- Departamento de Farmacologia, Instituto de Ciências Biomédicas, Universidade de São Paulo São Paulo, Brazil
| | - Kelly Ishida
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo São Paulo, Brazil
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Wang B, Prinsen P, Wang H, Bai Z, Wang H, Luque R, Xuan J. Macroporous materials: microfluidic fabrication, functionalization and applications. Chem Soc Rev 2017; 46:855-914. [DOI: 10.1039/c5cs00065c] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This article provides an up-to-date highly comprehensive overview (594 references) on the state of the art of the synthesis and design of macroporous materials using microfluidics and their applications in different fields.
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Affiliation(s)
- Bingjie Wang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process
- School of Mechanical and Power Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Pepijn Prinsen
- Departamento de Quimica Organica
- Universidad de Cordoba
- Campus de Rabanales
- Cordoba
- Spain
| | - Huizhi Wang
- School of Engineering and Physical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Zhishan Bai
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process
- School of Mechanical and Power Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Hualin Wang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process
- School of Mechanical and Power Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Rafael Luque
- Departamento de Quimica Organica
- Universidad de Cordoba
- Campus de Rabanales
- Cordoba
- Spain
| | - Jin Xuan
- School of Engineering and Physical Sciences
- Heriot-Watt University
- Edinburgh
- UK
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Elsayed M, Kothandaraman A, Edirisinghe M, Huang J. Porous Polymeric Films from Microbubbles Generated Using a T-Junction Microfluidic Device. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:13377-13385. [PMID: 27993032 DOI: 10.1021/acs.langmuir.6b02890] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this work, a simple microfluidic junction with a T geometry and coarse (200 μm diameter) capillaries was used to generate monodisperse microbubbles with an alginate polymer shell. Subsequently, these bubbles were used to prepare porous alginate films with good control over the pore structure. The lack of pore size, shape, and surface control in scalable forming of polymeric films is a major application-limiting drawback at present. Controlling the thinning process of the shell of the bubbles to tune the surface of the resulting structures was also explored. Films were prepared with nanopatterned surfaces by controlling the thinning of the bubble shell, with the aid of surfactants, to induce efficient bursting (fragmentation) of bubbles to generate nanodroplets, which become embedded within the film surface. This novel feature greatly expands and enhances the use of hydrophilic polymers in a wide range of biomedical applications, particularly in drug delivery and tissue engineering, such as studying cellular responses to different morphological surfaces.
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Affiliation(s)
- M Elsayed
- Department of Mechanical Engineering, University College London , Torrington Place, London WC1E 7JE, United Kingdom
| | - A Kothandaraman
- Department of Mechanical Engineering, University College London , Torrington Place, London WC1E 7JE, United Kingdom
| | - M Edirisinghe
- Department of Mechanical Engineering, University College London , Torrington Place, London WC1E 7JE, United Kingdom
| | - J Huang
- Department of Mechanical Engineering, University College London , Torrington Place, London WC1E 7JE, United Kingdom
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Anil M, Ayyildiz-Tamis D, Tasdemir S, Sendemir-Urkmez A, Gulce-Iz S. Bioinspired Materials and Biocompatibility. EMERGING RESEARCH ON BIOINSPIRED MATERIALS ENGINEERING 2016. [DOI: 10.4018/978-1-4666-9811-6.ch011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
Material science and engineering are the sources of divergent emerging technologies, since all the modifications and developments are being made to reach a novel biomaterial to fulfill the requirements of biomedical applications, the first important feature is the biocompatibility of the new advanced material. In this chapter, the general biocompatibility concept, test systems to determine biocompatibility, examples of bioinspired materials and their altered biocompatibility and future expectations from these novel bioinspired materials will be discussed.
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14
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Kucuk I. Polymer nanospheres formed by a microfluidic technique with Evans blue dye. POLYM ADVAN TECHNOL 2015. [DOI: 10.1002/pat.3641] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Israfil Kucuk
- Department of Metallurgical and Materials Engineering, Faculty of Engineering; Firat University; Elazig 23279 Turkey
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15
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Rovers TAM, Sala G, van der Linden E, Meinders MBJ. Disintegration of protein microbubbles in presence of acid and surfactants: a multi-step process. SOFT MATTER 2015; 11:6403-6411. [PMID: 26171925 DOI: 10.1039/c5sm01296a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The stability of protein microbubbles against addition of acid or surfactants was investigated. When these compounds were added, the microbubbles first released the encapsulated air. Subsequently, the protein shell completely disintegrated into nanometer-sized particles. The decrease in the number of intact microbubbles could be well described with the Weibull distribution. This distribution is based on two parameters, which suggests that two phenomena are responsible for the fracture of the microbubble shell. The microbubble shell is first weakened. Subsequently, the weakened protein shell fractures randomly. The probability of fracture turned out to be exponentially proportional to the concentration of acid and surfactant. A higher decay rate and a lower average breaking time were observed at higher acid or surfactant concentrations. For different surfactants, different decay rates were observed. The fact that the microbubble shell was ultimately disintegrated into nanometer-sized particles upon addition of acid or surfactants indicates that the interactions in the shell are non-covalent and most probably hydrophobic. After acid addition, the time at which the complete disintegration of the shell was observed coincided with the time of complete microbubble decay (release of air), while in the case of surfactant addition, there was a significant time gap between complete microbubble decay and complete shell disintegration.
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Affiliation(s)
- Tijs A M Rovers
- Top Institute Food and Nutrition, P.O. Box 557, 6700AN, Wageningen, The Netherlands
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