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Yandrapalli N. Complex Emulsions as an Innovative Pharmaceutical Dosage form in Addressing the Issues of Multi-Drug Therapy and Polypharmacy Challenges. Pharmaceutics 2024; 16:707. [PMID: 38931830 PMCID: PMC11206808 DOI: 10.3390/pharmaceutics16060707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 05/20/2024] [Accepted: 05/21/2024] [Indexed: 06/28/2024] Open
Abstract
This review explores the intersection of microfluidic technology and complex emulsion development as a promising solution to the challenges of formulations in multi-drug therapy (MDT) and polypharmacy. The convergence of microfluidic technology and complex emulsion fabrication could herald a transformative era in multi-drug delivery systems, directly confronting the prevalent challenges of polypharmacy. Microfluidics, with its unparalleled precision in droplet formation, empowers the encapsulation of multiple drugs within singular emulsion particles. The ability to engineer emulsions with tailored properties-such as size, composition, and release kinetics-enables the creation of highly efficient drug delivery vehicles. Thus, this innovative approach not only simplifies medication regimens by significantly reducing the number of necessary doses but also minimizes the pill burden and associated treatment termination-issues associated with polypharmacy. It is important to bring forth the opportunities and challenges of this synergy between microfluidic-driven complex emulsions and multi-drug therapy poses. Together, they not only offer a sophisticated method for addressing the intricacies of delivering multiple drugs but also align with broader healthcare objectives of enhancing treatment outcomes, patient safety, and quality of life, underscoring the importance of dosage form innovations in tackling the multifaceted challenges of modern pharmacotherapy.
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Affiliation(s)
- Naresh Yandrapalli
- Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstrasse 108, 01307 Dresden, Germany
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2
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Shishida K, Matsubara H. Demulsification of Silica Stabilized Pickering Emulsions Using Surface Freezing Transition of CTAC Adsorbed Films at the Tetradecane-Water Interface. J Oleo Sci 2023; 72:1083-1089. [PMID: 37989305 DOI: 10.5650/jos.ess23102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023] Open
Abstract
The adsorbed film of cetyltrimethylammonium chloride (CTAC) at the tetradecane (C14) - water interface undergoes a first-order surface transition from two-dimensional liquid to solid states upon cooling. In this paper, we utilized this surface freezing transition to realize a spontaneous demulsification of Pickering emulsions stabilized by silica particles. In the temperature range above the surface freezing transition, the interfacial tension of silica laden oil-water interface was lower than CTAC adsorbed film, hence, stable Pickering emulsion was obtained by vortex mixing. However, the interfacial tension of CTAC adsorbed film decreased rapidly below the surface freezing temperature and became lower than the silica laden interface. The reversal of the interfacial tensions between silica laden and CTAC adsorbed films gave rise to Pickering emulsion demulsification by the desorption of silica particles from the oil-water interface. The exchange of silica particles and CTAC at the surface of emulsion droplets was also confirmed experimentally by using phase modulation ellipsometry at the oil-water interface.
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Affiliation(s)
- Kazuki Shishida
- Graduate School of Advanced Science and Engineering, Hiroshima University
| | - Hiroki Matsubara
- Graduate School of Advanced Science and Engineering, Hiroshima University
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3
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Attia L, Chen LH, Doyle PS. Orthogonal Gelations to Synthesize Core-Shell Hydrogels Loaded with Nanoemulsion-Templated Drug Nanoparticles for Versatile Oral Drug Delivery. Adv Healthc Mater 2023; 12:e2301667. [PMID: 37507108 DOI: 10.1002/adhm.202301667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/24/2023] [Indexed: 07/30/2023]
Abstract
Hydrophobic active pharmaceutical ingredients (APIs) are ubiquitous in the drug development pipeline, but their poor bioavailability often prevents their translation into drug products. Industrial processes to formulate hydrophobic APIs are expensive, difficult to optimize, and not flexible enough to incorporate customizable drug release profiles into drug products. Here, a novel, dual-responsive gelation process that exploits orthogonal thermo-responsive and ion-responsive gelations is introduced. This one-step "dual gelation" synthesizes core-shell (methylcellulose-alginate) hydrogel particles and encapsulates drug-laden nanoemulsions in the hydrogel matrices. In situ crystallization templates drug nanocrystals inside the polymeric core, while a kinetically stable amorphous solid dispersion is templated in the shell. Drug release is explored as a function of particle geometry, and programmable release is demonstrated for various therapeutic applications including delayed pulsatile release and sequential release of a model fixed-dose combination drug product of ibuprofen and fenofibrate. Independent control over drug loading between the shell and the core is demonstrated. This formulation approach is shown to be a flexible process to develop drug products with biocompatible materials, facile synthesis, and precise drug release performance. This work suggests and applies a novel method to leverage orthogonal gel chemistries to generate functional core-shell hydrogel particles.
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Affiliation(s)
- Lucas Attia
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - Liang-Hsun Chen
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - Patrick S Doyle
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
- Campus for Research Excellence and Technological Enterprise, Singapore, 138602, Singapore
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4
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Ashfaq A, An JC, Ulański P, Al-Sheikhly M. On the Mechanism and Kinetics of Synthesizing Polymer Nanogels by Ionizing Radiation-Induced Intramolecular Crosslinking of Macromolecules. Pharmaceutics 2021; 13:1765. [PMID: 34834180 PMCID: PMC8622303 DOI: 10.3390/pharmaceutics13111765] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/11/2021] [Accepted: 10/14/2021] [Indexed: 11/16/2022] Open
Abstract
Nanogels-internally crosslinked macromolecules-have a growing palette of potential applications, including as drug, gene or radioisotope nanocarriers and as in vivo signaling molecules in modern diagnostics and therapy. This has triggered considerable interest in developing new methods for their synthesis. The procedure based on intramolecular crosslinking of polymer radicals generated by pulses of ionizing radiation has many advantages. The substrates needed are usually simple biocompatible polymers and water. This eliminates the use of monomers, chemical crosslinking agents, initiators, surfactants, etc., thus limiting potential problems with the biocompatibility of products. This review summarizes the basics of this method, providing background information on relevant aspects of polymer solution thermodynamics, radiolysis of aqueous solutions, generation and reactions of polymer radicals, and the non-trivial kinetics and mechanism of crosslinking, focusing on the main factors influencing the outcomes of the radiation synthesis of nanogels: molecular weight of the starting polymer, its concentration, irradiation mode, absorbed dose of ionizing radiation and temperature. The most important techniques used to perform the synthesis, to study the kinetics and mechanism of the involved reactions, and to assess the physicochemical properties of the formed nanogels are presented. Two select important cases, the synthesis of nanogels based on polyvinylpyrrolidone (PVP) and/or poly(acrylic acid) (PAA), are discussed in more detail. Examples of recent application studies on radiation-synthesized PVP and PAA nanogels in transporting drugs across the blood-brain barrier and as targeted radioisotope carriers in nanoradiotherapy are briefly described.
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Affiliation(s)
- Aiysha Ashfaq
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA;
| | - Jung-Chul An
- Anode Materials Research Group, Research Institute of Industrial Science & Technology (RIST), Pohang 37673, Korea;
| | - Piotr Ulański
- Institute of Applied Radiation Chemistry, Faculty of Chemistry, Lodz University of Technology, Wroblewskiego 15, 93-590 Lodz, Poland
| | - Mohamad Al-Sheikhly
- Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA
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5
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Sakamoto H, Masunaga A, Takiue T, Tanida H, Uruga T, Nitta K, Prause A, Gradzielski M, Matsubara H. Surface Freezing of Cetyltrimethylammonium Chloride-Hexadecanol Mixed Adsorbed Film at Dodecane-Water Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:14811-14818. [PMID: 33222439 DOI: 10.1021/acs.langmuir.0c02807] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The surface freezing transition of a mixed adsorbed film containing cetyltrimethylammonium chloride (CTAC) and n-hexadecanol (C16OH) was utilized at the dodecane-water interface to control the stability of oil-in-water (O/W) emulsions. The corresponding surface frozen and surface liquid mixed adsorbed films were characterized using interfacial tensiometry and X-ray reflectometry. The emulsion samples prepared in the temperature range of the surface frozen and surface liquid phases showed a clear difference in their stability: the emulsion volume decreased continuously right after the emulsification in the surface liquid region, while it remained constant or decreased at a much slower rate in the surface frozen region. Compared to the previously examined CTAC-tetradecane mixed adsorbed film, the surface freezing temperature increased from 9.5 to 25.0 °C due to the better chain matching between CTAC and C16OH and higher surface activity of C16OH. This then renders such systems much more attractive for practical applications.
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Affiliation(s)
- Hiromu Sakamoto
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Akihiro Masunaga
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takanori Takiue
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Hajime Tanida
- Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan
| | - Tomoya Uruga
- Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan
| | - Kiyofumi Nitta
- Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan
| | - Albert Prause
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, 10623 Berlin, Germany
| | - Michael Gradzielski
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, 10623 Berlin, Germany
| | - Hiroki Matsubara
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
- Graduate School of Advanced Science and Engineering, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima 739-8526, Japan
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6
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Oral delivery of bacteria: Basic principles and biomedical applications. J Control Release 2020; 327:801-833. [DOI: 10.1016/j.jconrel.2020.09.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 09/05/2020] [Indexed: 12/18/2022]
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7
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Chen L, Cheng L, Doyle PS. Nanoemulsion-Loaded Capsules for Controlled Delivery of Lipophilic Active Ingredients. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2001677. [PMID: 33101868 PMCID: PMC7578884 DOI: 10.1002/advs.202001677] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/24/2020] [Indexed: 05/04/2023]
Abstract
Nanoemulsions have become ideal candidates for loading hydrophobic active ingredients and enhancing their bioavailability in the pharmaceutical, food, and cosmetic industries. However, the lack of versatile carrier platforms for nanoemulsions hinders advanced control over their release behavior. In this work, a method is developed to encapsulate nanoemulsions in alginate capsules for the controlled delivery of lipophilic active ingredients. Functional nanoemulsions loaded with active ingredients and calcium ions are first prepared, followed by encapsulation inside alginate shells. The intrinsically high viscosity of the nanoemulsions ensures the formation of spherical capsules and high encapsulation efficiency during the synthesis. Moreover, a facile approach is developed to measure the nanoemulsion release profile from capsules through UV-vis measurement without an additional extraction step. A quantitative analysis of the release profiles shows that the capsule systems possess a tunable, delayed-burst release. The encapsulation methodology is generalized to other active ingredients, oil phases, nanodroplet sizes, and chemically crosslinked inner hydrogel cores. Overall, the capsule systems provide promising platforms for various functional nanoemulsion formulations.
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Affiliation(s)
- Liang‐Hsun Chen
- Department of Chemical EngineeringMassachusetts Institute of Technology77 Massachusetts AvenueCambridgeMA02139USA
| | - Li‐Chiun Cheng
- Department of Chemical EngineeringMassachusetts Institute of Technology77 Massachusetts AvenueCambridgeMA02139USA
| | - Patrick S. Doyle
- Department of Chemical EngineeringMassachusetts Institute of Technology77 Massachusetts AvenueCambridgeMA02139USA
- Campus for Research Excellence and Technological EnterpriseSingapore138602Singapore
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8
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Badruddoza AZM, Gupta A, Myerson AS, Trout BL, Doyle PS. Low Energy Nanoemulsions as Templates for the Formulation of Hydrophobic Drugs. ADVANCED THERAPEUTICS 2018. [DOI: 10.1002/adtp.201700020] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Abu Zayed Md Badruddoza
- Department of Chemical Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Ankur Gupta
- Department of Mechanical and Aerospace Engineering; Princeton University; Princeton NJ 08540 USA
| | - Allan S. Myerson
- Department of Chemical Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Bernhardt L. Trout
- Department of Chemical Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Patrick S. Doyle
- Department of Chemical Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
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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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Microgels of silylated HPMC as a multimodal system for drug co-encapsulation. Int J Pharm 2017; 532:790-801. [PMID: 28755992 DOI: 10.1016/j.ijpharm.2017.07.074] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 07/21/2017] [Accepted: 07/25/2017] [Indexed: 01/22/2023]
Abstract
Combined therapy is a global strategy developed to prevent drug resistance in cancer and infectious diseases. In this field, there is a need of multifunctional drug delivery systems able to co-encapsulate small drug molecules, peptides, proteins, associated to targeting functions, nanoparticles. Silylated hydrogels are alkoxysilane hybrid polymers that can be engaged in a sol-gel process, providing chemical cross linking in physiological conditions, and functionalized biocompatible hybrid materials. In the present work, microgels were prepared with silylated (hydroxypropyl)methyl cellulose (Si-HPMC) that was chemically cross linked in soft conditions of pH and temperature. They were prepared by an emulsion templating process, water in oil (W/O), as microreactors where the condensation reaction took place. The ability to functionalize the microgels, so-called FMGs, in a one-pot process, was evaluated by grafting a silylated hydrophilic model drug, fluorescein (Si-Fluor), using the same reaction of condensation. Biphasic microgels (BPMGs) were prepared to evaluate their potential to encapsulate lipophilic model drug (Nile red). They were composed of two separate compartments, one oily phase (sesame oil) trapped in the cross linked Si-HPMC hydrophilic phase. The FMGs and BPMGs were characterized by different microscopic techniques (optic, epi-fluorescence, Confocal Laser Scanning Microscopy and scanning electronic microscopy), the mechanical properties were monitored using nano indentation by Atomic Force Microscopy (AFM), and different preliminary tests were performed to evaluate their chemical and physical stability. Finally, it was demonstrated that it is possible to co-encapsulate both hydrophilic and hydrophobic drugs, in silylated microgels, that were physically and chemically stable. They were obtained by chemical cross linking in soft conditions, and without surfactant addition during the emulsification process. The amount of drug loaded was in favor of further biological activity. Mechanical stimulations should be necessary to trigger drug release.
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11
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Liu D, Zhang H, Fontana F, Hirvonen JT, Santos HA. Microfluidic-assisted fabrication of carriers for controlled drug delivery. LAB ON A CHIP 2017; 17:1856-1883. [PMID: 28480462 DOI: 10.1039/c7lc00242d] [Citation(s) in RCA: 137] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The microfluidic technique has brought unique opportunities toward the full control over the production processes for drug delivery carriers, owing to the miniaturisation of the fluidic environment. In comparison to the conventional batch methods, the microfluidic setup provides a range of advantages, including the improved controllability of material characteristics, as well as the precisely controlled release profiles of payloads. This review gives an overview of different fluidic principles used in the literature to produce either polymeric microparticles or nanoparticles, focusing on the materials that could have an impact on drug delivery. We also discuss the relations between the particle size and size distribution of the obtained carriers, and the design and configuration of the microfluidic setups. Overall, the use of microfluidic technologies brings exciting opportunities to expand the body of knowledge in the field of controlled drug delivery and great potential to clinical translation of drug delivery systems.
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Affiliation(s)
- Dongfei Liu
- Division of Pharmaceutical Chemistry and Technology, Drug Research Program, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland.
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12
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Cong Y, Li Q, Chen M, Wu L. Synthesis of Dual‐Stimuli‐Responsive Microcontainers with Two Payloads in Different Storage Spaces for Preprogrammable Release. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201612291] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ying Cong
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers Fudan University Shanghai 200433 P.R. China
| | - Qiuju Li
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers Fudan University Shanghai 200433 P.R. China
| | - Min Chen
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers Fudan University Shanghai 200433 P.R. China
| | - Limin Wu
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers Fudan University Shanghai 200433 P.R. China
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13
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Cong Y, Li Q, Chen M, Wu L. Synthesis of Dual‐Stimuli‐Responsive Microcontainers with Two Payloads in Different Storage Spaces for Preprogrammable Release. Angew Chem Int Ed Engl 2017; 56:3552-3556. [DOI: 10.1002/anie.201612291] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Ying Cong
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers Fudan University Shanghai 200433 P.R. China
| | - Qiuju Li
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers Fudan University Shanghai 200433 P.R. China
| | - Min Chen
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers Fudan University Shanghai 200433 P.R. China
| | - Limin Wu
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers Fudan University Shanghai 200433 P.R. China
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14
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Busatto CA, Labie H, Lapeyre V, Auzely-Velty R, Perro A, Casis N, Luna J, Estenoz DA, Ravaine V. Oil-in-microgel strategy for enzymatic-triggered release of hydrophobic drugs. J Colloid Interface Sci 2017; 493:356-364. [PMID: 28126608 DOI: 10.1016/j.jcis.2017.01.029] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 01/06/2017] [Accepted: 01/09/2017] [Indexed: 01/28/2023]
Abstract
Polymer microgels have received considerable attention due to their great potential in the biomedical field as drug delivery systems. Hyaluronic acid (HA) is a naturally occurring glycosaminoglycan composed of N-acetyl-d-glucosamine and d-glucuronic acid. This polymer is biodegradable, nontoxic, and can be chemically modified. In this work, a co-flow microfluidic strategy for the preparation of biodegradable HA microgels encapsulating hydrophobic drugs is presented. The approach relies on: (i) generation of a primary oil-in-water (O/W) nanoemulsion by the ultrasonication method, (ii) formation of a double oil-in-water-in-oil emulsion (O/W/O) using microfluidics, and (iii) cross-linking of microgels by photopolymerization of HA precursors modified with methacrylate groups (HA-MA) present in the aqueous phase of the droplets. The procedure is used for the encapsulation and controlled release of progesterone. Degradability and encapsulation/release studies in PBS buffer at 37°C in presence of different concentrations of hyaluronidase are performed. It is demonstrated that enzymatic degradation can be used to trigger the release of progesterone from microgels. This method provides precise control of the release system and can be applied for the encapsulation and controlled release of different types of hydrophobic drugs.
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Affiliation(s)
- C A Busatto
- Instituto de Desarrollo Tecnológico para la Industria Química, INTEC (Universidad Nacional del Litoral and CONICET), Güemes 3450, 3000 Santa Fe, Argentina
| | - H Labie
- Université de Bordeaux, Bordeaux INP, ISM, UMR 5255, Site ENSCBP, 16 avenue Pey Berland, 33607 Pessac, France
| | - V Lapeyre
- Université de Bordeaux, Bordeaux INP, ISM, UMR 5255, Site ENSCBP, 16 avenue Pey Berland, 33607 Pessac, France
| | - R Auzely-Velty
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), affiliated with Université Joseph Fourier, 601 rue de la Chimie, 38041 Grenoble, France
| | - A Perro
- Université de Bordeaux, Bordeaux INP, ISM, UMR 5255, Site ENSCBP, 16 avenue Pey Berland, 33607 Pessac, France
| | - N Casis
- Instituto de Desarrollo Tecnológico para la Industria Química, INTEC (Universidad Nacional del Litoral and CONICET), Güemes 3450, 3000 Santa Fe, Argentina
| | - J Luna
- Instituto de Desarrollo Tecnológico para la Industria Química, INTEC (Universidad Nacional del Litoral and CONICET), Güemes 3450, 3000 Santa Fe, Argentina
| | - D A Estenoz
- Instituto de Desarrollo Tecnológico para la Industria Química, INTEC (Universidad Nacional del Litoral and CONICET), Güemes 3450, 3000 Santa Fe, Argentina
| | - V Ravaine
- Université de Bordeaux, Bordeaux INP, ISM, UMR 5255, Site ENSCBP, 16 avenue Pey Berland, 33607 Pessac, France.
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15
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Maher S, Santos A, Kumeria T, Kaur G, Lambert M, Forward P, Evdokiou A, Losic D. Multifunctional microspherical magnetic and pH responsive carriers for combination anticancer therapy engineered by droplet-based microfluidics. J Mater Chem B 2017; 5:4097-4109. [DOI: 10.1039/c7tb00588a] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Drug loaded luminescent porous silicon diatoms and magnetic bacterial nanowires were encapsulated within pH sensitive polymer forming biodegradable microcapsules using droplet-based microfluidics for targeting colorectal cancer.
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Affiliation(s)
- Shaheer Maher
- School of Chemical Engineering
- The University of Adelaide
- Adelaide
- Australia
- Faculty of Pharmacy
| | - Abel Santos
- School of Chemical Engineering
- The University of Adelaide
- Adelaide
- Australia
- Institute for Photonics and Advanced Sensing (IPAS)
| | - Tushar Kumeria
- School of Chemical Engineering
- The University of Adelaide
- Adelaide
- Australia
| | - Gagandeep Kaur
- Discipline of Surgery
- Basil Hetzel Institute
- The University of Adelaide
- Adelaide
- Australia
| | - Martin Lambert
- School of Civil
- Environmental and Mining Engineering
- The University of Adelaide
- Adelaide
- Australia
| | | | - Andreas Evdokiou
- Discipline of Surgery
- Basil Hetzel Institute
- The University of Adelaide
- Adelaide
- Australia
| | - Dusan Losic
- School of Chemical Engineering
- The University of Adelaide
- Adelaide
- Australia
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16
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Seiffert S. Microfluidics and Macromolecules: Top-Down Analytics and Bottom-Up Engineering of Soft Matter at Small Scales. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600280] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sebastian Seiffert
- Johannes Gutenberg-Universität Mainz; Institute of Physical Chemistry; Duesbergweg 10-14 55128 Mainz Germany
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17
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Badruddoza AZM, Godfrin PD, Myerson AS, Trout BL, Doyle PS. Core-Shell Composite Hydrogels for Controlled Nanocrystal Formation and Release of Hydrophobic Active Pharmaceutical Ingredients. Adv Healthc Mater 2016; 5:1960-8. [PMID: 27249402 DOI: 10.1002/adhm.201600266] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 04/19/2016] [Indexed: 01/13/2023]
Abstract
Although roughly 40% of pharmaceuticals being developed are poorly water soluble, this class of drugs lacks a formulation strategy capable of producing high loads, fast dissolution kinetics, and low energy input. In this work, a novel bottom-up approach is developed for producing and formulating nanocrystals of poorly water-soluble active pharmaceutical ingredients (APIs) using core-shell composite hydrogel beads. Organic phase nanoemulsion droplets stabilized by polyvinyl alcohol (PVA) and containing a model hydrophobic API (fenofibrate) are embedded in the alginate hydrogel matrix and subsequently act as crystallization reactors. Controlled evaporation of this composite material produces core-shell structured alginate-PVA hydrogels with drug nanocrystals (500-650 nm) embedded within the core. Adjustable loading of API nanocrystals up to 83% by weight is achieved with dissolution (of 80% of the drug) occurring in as little as 30 min. A quantitative model is also developed and experimentally validated that the drug release patterns of the fenofibrate nanocrystals can be modulated by controlling the thickness of the PVA shell and drug loading. Thus, these composite materials offer a "designer" drug delivery system. Overall, our approach enables a novel means of simultaneous controlled crystallization and formulation of hydrophobic drugs that circumvents energy intensive top-down processes in traditional manufacturing.
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Affiliation(s)
- Abu Zayed Md Badruddoza
- Department of Chemical Engineering; Massachusetts Institute of Technology; 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - P. Douglas Godfrin
- Department of Chemical Engineering; Massachusetts Institute of Technology; 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - Allan S. Myerson
- Department of Chemical Engineering; Massachusetts Institute of Technology; 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - Bernhardt L. Trout
- Department of Chemical Engineering; Massachusetts Institute of Technology; 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - Patrick S. Doyle
- Department of Chemical Engineering; Massachusetts Institute of Technology; 77 Massachusetts Avenue Cambridge MA 02139 USA
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18
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Sahiner N, Sagbas S, Aktas N. Single step natural poly(tannic acid) particle preparation as multitalented biomaterial. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 49:824-834. [DOI: 10.1016/j.msec.2015.01.076] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 12/14/2014] [Accepted: 01/23/2015] [Indexed: 12/26/2022]
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19
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Schulte B, Rahimi K, Keul H, Demco DE, Walther A, Möller M. Blending of reactive prepolymers to control the morphology and polarity of polyglycidol based microgels. SOFT MATTER 2015; 11:943-953. [PMID: 25515704 DOI: 10.1039/c4sm02116a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The compartmentalization of microgels is a challenging task for synthetic polymer chemistry. Although the complexation with low molecular weight compounds or the use of microfluidic techniques offer attractive possibilities for other length scales, it is difficult to implement compartments in the mesoscale range of 10-100 nm. Herein we show how simple blending of reactive prepolymers is suitable to design new microgel morphologies with tailored compartments. We use poly(EEGE)-block-poly(AGE) as crosslinkable, pro-hydrophilic prepolymer in blends with varying amounts of crosslinkable, yet hydrophobic poly(THF-stat-AllylEHO) or inert and hydrophobic polystyrene, and crosslink the allyl functional prepolymer(s) in a thiol-ene click-type reaction after miniemulsification. Our strategy shows how arrested versus free nanophase separation can be used to control easily the morphology and polarity of microgel particles.
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Affiliation(s)
- B Schulte
- DWI - Leibniz Institute for Interactive Materials and Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Forckenbeckstraße 50, D-52074 Aachen, Germany.
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20
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Riahi R, Tamayol A, Shaegh SAM, Ghaemmaghami A, Dokmeci MR, Khademshosseini A. Microfluidics for Advanced Drug Delivery Systems. Curr Opin Chem Eng 2015; 7:101-112. [PMID: 31692947 PMCID: PMC6830738 DOI: 10.1016/j.coche.2014.12.001] [Citation(s) in RCA: 122] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Considerable efforts have been devoted towards developing effective drug delivery methods. Microfluidic systems, with their capability for precise handling and transport of small liquid quantities, have emerged as a promising platform for designing advanced drug delivery systems. Thus, microfluidic systems have been increasingly used for fabrication of drug carriers or direct drug delivery to a targeted tissue. In this review, the recent advances in these areas are critically reviewed and the shortcomings and opportunities are discussed. In addition, we highlight the efforts towards developing smart drug delivery platforms with integrated sensing and drug delivery components.
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Affiliation(s)
- Reza Riahi
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Ali Tamayol
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Seyed Ali Mousavi Shaegh
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Amir Ghaemmaghami
- Division of Immunology, School of Life Sciences, Faculty of Medicine and Health Sciences, University of Nottingham, United Kingdom
| | - Mehmet R. Dokmeci
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Ali Khademshosseini
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, USA
- Department of Physics, King Abdulaziz University, Jeddah 21569, Saudi Arabia
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21
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Kieviet BD, Schön PM, Vancso GJ. Stimulus-responsive polymers and other functional polymer surfaces as components in glass microfluidic channels. LAB ON A CHIP 2014; 14:4159-70. [PMID: 25231342 DOI: 10.1039/c4lc00784k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The integration of smart stimulus-responsive polymers as functional elements within microfluidic devices has greatly improved the performance capabilities of controlled fluid delivery. For their use as actuators in microfluidic systems, reversible expansion and shrinking are unique mechanisms which can be utilized as both passive and active fluid control elements to establish gate and valve functions (passive) and pumping elements (active). Various constituents in microfluidic glass channels based on stimulus-responsive elements have been reported based on pH-responsive, thermoresponsive and photoresponsive coatings. Fluid control and robust performance have been demonstrated in microfluidic devices in a number of studies. Here we give a brief overview of selected examples from the literature reporting on the use of stimulus response polymers as active or passive elements for fluid control in microfluidic devices, with specific emphasis on glass-based devices. The remaining challenges include improving switching times and achieving local addressability of the responsive constituent. We envisage tackling these challenges by utilizing redox-responsive polymers which offer fast and reversible switching and local addressability in combination with nanofabricated electrodes.
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Affiliation(s)
- Bernard D Kieviet
- Materials Science and Technology of Polymers, MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands.
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22
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Microfluidic approach for encapsulation via double emulsions. Curr Opin Pharmacol 2014; 18:35-41. [DOI: 10.1016/j.coph.2014.08.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 08/05/2014] [Accepted: 08/22/2014] [Indexed: 11/23/2022]
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23
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Hövermann D, Rossow T, Gübeli RJ, Seiffert S, Weber W. Microfluidic Synthesis of Pharmacologically Responsive Supramolecular Biohybrid Microgels. Macromol Biosci 2014; 14:1730-4. [DOI: 10.1002/mabi.201400342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 08/08/2014] [Indexed: 11/12/2022]
Affiliation(s)
- Désirée Hövermann
- Faculty of Biology, Centre for Biological Signalling Studies (BIOSS); University of Freiburg; Schänzlestrasse 18 79104 Freiburg Germany
| | - Torsten Rossow
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Takustr. 3 14195 Berlin Germany
| | - Raphael J. Gübeli
- Faculty of Biology, Centre for Biological Signalling Studies (BIOSS); University of Freiburg; Schänzlestrasse 18 79104 Freiburg Germany
- Spemann Graduate School of Biology and Medicine (SGBM); University of Freiburg; Albertstrasse 19a 79104 Freiburg Germany
| | - Sebastian Seiffert
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Takustr. 3 14195 Berlin Germany
- F-ISFM Soft Matter and Functional Materials Helmholtz-Zentrum Berlin; Hahn-Meitner-Platz 1 14109 Berlin Germany
| | - Wilfried Weber
- Faculty of Biology, Centre for Biological Signalling Studies (BIOSS); University of Freiburg; Schänzlestrasse 18 79104 Freiburg Germany
- Spemann Graduate School of Biology and Medicine (SGBM); University of Freiburg; Albertstrasse 19a 79104 Freiburg Germany
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24
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Hofmeister I, Landfester K, Taden A. pH-Sensitive Nanocapsules with Barrier Properties: Fragrance Encapsulation and Controlled Release. Macromolecules 2014. [DOI: 10.1021/ma501388w] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ines Hofmeister
- Max Planck Institute
for Polymer Research, 55128 Mainz, Germany
- Henkel AG & Co. KGaA, Adhesive Research, 40191 Düsseldorf, Germany
| | | | - Andreas Taden
- Max Planck Institute
for Polymer Research, 55128 Mainz, Germany
- Henkel AG & Co. KGaA, Adhesive Research, 40191 Düsseldorf, Germany
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25
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Kim JH, Jeon TY, Choi TM, Shim TS, Kim SH, Yang SM. Droplet microfluidics for producing functional microparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:1473-88. [PMID: 24143936 DOI: 10.1021/la403220p] [Citation(s) in RCA: 141] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Isotropic microparticles prepared from a suspension that undergoes polymerization have long been used for a variety of applications. Bulk emulsification procedures produce polydisperse emulsion droplets that are transformed into spherical microparticles through chemical or physical consolidation. Recent advances in droplet microfluidics have enabled the production of monodisperse emulsions that yield highly uniform microparticles, albeit only on a drop-by-drop basis. In addition, microfluidic devices have provided a variety of means for particle functionalization through shaping, compartmentalizing, and microstructuring. These functionalized particles have significant potential for practical applications as a new class of colloidal materials. This feature article describes the current state of the art in the microfluidic-based synthesis of monodisperse functional microparticles. The three main sections of this feature article discuss the formation of isotropic microparticles, engineered microparticles, and hybrid microparticles. The complexities of the shape, compartment, and microstructure of these microparticles increase systematically from the isotropic to the hybrid types. Each section discusses the key idea underlying the design of the particles, their functionalities, and their applications. Finally, we outline the current limitations and future perspectives on microfluidic techniques used to produce microparticles.
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Affiliation(s)
- Ju Hyeon Kim
- Department of Chemical and Biomolecular Engineering and ‡National Creative Research Initiative Center for Integrated Optofluidic Systems, KAIST , Daejeon 305-701, South Korea
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26
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An HZ, Safai ER, Burak Eral H, Doyle PS. Synthesis of biomimetic oxygen-carrying compartmentalized microparticles using flow lithography. LAB ON A CHIP 2013; 13:4765-74. [PMID: 24141406 DOI: 10.1039/c3lc50610j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We report a microfluidic approach for lithographically photo-patterning compartmentalized microparticles with any 2D-extruded shape, down to the cellular length scale (~10 microns). The prepolymer solution consists of a UV crosslinkable perfluorodecalin-in-water nanoemulsion stabilized by Pluronic(®) F-68. The nanoemulsions are generated using high-pressure homogenization and are osmotically stabilized by the trapped species method. The presence of PFC droplets increases the solubility and diffusivity of oxygen in the prepolymer solution, thereby enhancing the rate of O2 inhibition during microparticle synthesis. We develop a simple model that successfully predicts the augmented O2 mass transport, which agrees well with experimental data. Informed by our analytical results, cell-sized composite microgels are generated by controlling the oxygen environment around the polydimethylsiloxane (PDMS) microfluidic synthesis device. These nanoemulsion composites are functionally similar to red blood cells as oxygen carriers. Such bio-inspired polymeric particles with controlled physical properties are promising vehicles for drug delivery and clinical diagnostics.
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Affiliation(s)
- Harry Z An
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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27
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Affiliation(s)
- Sebastian Seiffert
- Helmholtz-Zentrum Berlin, F-ISFM Soft Matter and Functional Materials; Hahn-Meitner-Platz 1 14109 Berlin Germany
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Takustr. 3 14195 Berlin Germany
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28
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Josef E, Barat K, Barsht I, Zilberman M, Bianco-Peled H. Composite hydrogels as a vehicle for releasing drugs with a wide range of hydrophobicities. Acta Biomater 2013; 9:8815-22. [PMID: 23816647 DOI: 10.1016/j.actbio.2013.06.028] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 05/24/2013] [Accepted: 06/19/2013] [Indexed: 10/26/2022]
Abstract
Many vitamins, bioactive lipids and over 40% of newly developed drugs are hydrophobic, and their poor water solubility limits their delivery using conventional formulations. In this work we investigated a composite gel system formulated from microemulsions embedded in alginate hydrogels, and showed that it is capable of loading several hydrophobic compounds with a wide range of aqueous solubility. All gels were clear, with no precipitations, indicating the solubility of the drugs in the gels. The release behavior was similar for different microemulsion formulations, various drugs and increasing concentrations of a drug. These findings indicate that our system could potentially act as a generic system, where the properties of the release do not depend on the drug but rather on the attributes of the gel. The structure of composite gels was investigated using small-angle scattering of X-rays and neutrons (SAXS and SANS, respectively). SANS showed more sensitivity to the structure of the microemulsion in the composite gel than SAXS did. SAXS and SANS plots of the composite gels show that both the droplets and the gel network preserve their structure when mixed together.
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29
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Multiphase flow microfluidics for the production of single or multiple emulsions for drug delivery. Adv Drug Deliv Rev 2013; 65:1420-46. [PMID: 23770061 DOI: 10.1016/j.addr.2013.05.009] [Citation(s) in RCA: 229] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Revised: 03/17/2013] [Accepted: 05/30/2013] [Indexed: 11/20/2022]
Abstract
Considerable effort has been directed towards developing novel drug delivery systems. Microfluidics, capable of generating monodisperse single and multiple emulsion droplets, executing precise control and operations on these droplets, is a powerful tool for fabricating complex systems (microparticles, microcapsules, microgels) with uniform size, narrow size distribution and desired properties, which have great potential in drug delivery applications. This review presents an overview of the state-of-the-art multiphase flow microfluidics for the production of single emulsions or multiple emulsions for drug delivery. The review starts with a brief introduction of the approaches for making single and multiple emulsions, followed by presentation of some potential drug delivery systems (microparticles, microcapsules and microgels) fabricated in microfluidic devices using single or multiple emulsions as templates. The design principles, manufacturing processes and properties of these drug delivery systems are also discussed and compared. Furthermore, drug encapsulation and drug release (including passive and active controlled release) are provided and compared highlighting some key findings and insights. Finally, site-targeting delivery using multiphase flow microfluidics is also briefly introduced.
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30
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Gañán-Calvo A, Montanero J, Martín-Banderas L, Flores-Mosquera M. Building functional materials for health care and pharmacy from microfluidic principles and Flow Focusing. Adv Drug Deliv Rev 2013; 65:1447-69. [PMID: 23954401 DOI: 10.1016/j.addr.2013.08.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Revised: 08/02/2013] [Accepted: 08/02/2013] [Indexed: 12/11/2022]
Abstract
In this review, we aim at establishing a relationship between the fundamentals of the microfluidics technologies used in the Pharmacy field, and the achievements accomplished by those technologies. We describe the main methods for manufacturing micrometer drops, bubbles, and capsules, as well as the corresponding underlying physical mechanisms. In this regard, the review is intended to show non-specialist readers the dynamical processes which determine the success of microfluidics techniques. Flow focusing (FF) is a droplet-based method widely used to produce different types of fluid entities on a continuous basis by applying an extensional co-flow. We take this technique as an example to illustrate how microfluidics technologies for drug delivery are progressing from a deep understanding of the physics of fluids involved. Specifically, we describe the limitations of FF, and review novel methods which enhance its stability and robustness. In the last part of this paper, we review some of the accomplishments of microfluidics when it comes to drug manufacturing and delivery. Special attention is paid to the production of the microencapsulated form because this fluidic structure gathers the main functionalities sought for in Pharmacy. We also show how FF has been adapted to satisfy an ample variety of pharmaceutical requirements to date.
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31
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32
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Seiffert S. Small but Smart: Sensitive Microgel Capsules. Angew Chem Int Ed Engl 2013; 52:11462-8. [DOI: 10.1002/anie.201303055] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 06/10/2013] [Indexed: 11/05/2022]
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33
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Gao Y, Hou C, Zhou L, Zhang D, Zhang C, Miao L, Wang L, Dong Z, Luo Q, Liu J. A dual enzyme microgel with high antioxidant ability based on engineered seleno-ferritin and artificial superoxide dismutase. Macromol Biosci 2013; 13:808-16. [PMID: 23606510 DOI: 10.1002/mabi.201300019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 02/28/2013] [Indexed: 11/09/2022]
Abstract
An antioxidant microgel with both glutathione peroxidase (GPx) and superoxide dismutase (SOD) activities is reported. Using computational design and genetic engineering methods, the main catalytic components of GPx are fabricated onto the surface of ferritin. The resulting seleno-ferritin (Se-Fn) monomers can self-assemble into nanocomposites that exhibit remarkable GPx activity due to the well organized multi-GPx catalytic centers. Subsequently, a porphyrin derivative is synthesized as an SOD mimic, and is employed to construct a synergistic dual enzyme system by crosslinking Se-Fn nanocomposites into a microgel. Significantly, this dual enzyme microgel is demonstrated to display better antioxidant ability than single GPx or SOD mimics in protecting cells from oxidative damage.
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Affiliation(s)
- Yuzhou Gao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China
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34
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Yashchenok A, Parakhonskiy B, Donatan S, Kohler D, Skirtach A, Möhwald H. Polyelectrolyte multilayer microcapsules templated on spherical, elliptical and square calcium carbonate particles. J Mater Chem B 2013; 1:1223-1228. [DOI: 10.1039/c2tb00416j] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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35
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Advanced materials and processing for drug delivery: the past and the future. Adv Drug Deliv Rev 2013; 65:104-20. [PMID: 23088863 DOI: 10.1016/j.addr.2012.10.003] [Citation(s) in RCA: 593] [Impact Index Per Article: 53.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Revised: 10/09/2012] [Accepted: 10/16/2012] [Indexed: 11/21/2022]
Abstract
Design and synthesis of efficient drug delivery systems are of vital importance for medicine and healthcare. Materials innovation and nanotechnology have synergistically fueled the advancement of drug delivery. Innovation in material chemistry allows the generation of biodegradable, biocompatible, environment-responsive, and targeted delivery systems. Nanotechnology enables control over size, shape and multi-functionality of particulate drug delivery systems. In this review, we focus on the materials innovation and processing of drug delivery systems and how these advances have shaped the past and may influence the future of drug delivery.
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36
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Seiffert S. Microgel capsules tailored by droplet-based microfluidics. Chemphyschem 2012; 14:295-304. [PMID: 23225762 DOI: 10.1002/cphc.201200749] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Indexed: 12/14/2022]
Abstract
Microgel capsules are micrometer-sized particles that consist of a cross-linked, solvent-swollen polymer network complexed with additives. These particles have various applications, such as drug delivery, catalysis, and analytics. To optimize the performance of microgel capsules, it is crucial to control their size, shape, and content of encapsulated additives with high precision. There are two classes of microgel-capsule structures. One class comprises bulk microcapsules that consist of a polymer network spanning the entire particle and entrapping the additive within its meshes. The other class comprises core-shell structures; in this case, the microgel polymer network just forms the shell of the particles, whereas their interior is hollow and hosts the encapsulated payload. Both types of structures can be produced with exquisite control by droplet-based microfluidic templating followed by subsequent droplet gelation. This article highlights some early and recent achievements in the use of this technique to tailor soft microgel capsules; it also discusses applications of these particles. A special focus is on the encapsulation of living cells, which are very sensitive and complex but also very useful additives for immobilization within microgel particles.
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Affiliation(s)
- Sebastian Seiffert
- F-I2 Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin, Germany.
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37
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Tonhauser C, Natalello A, Löwe H, Frey H. Microflow Technology in Polymer Synthesis. Macromolecules 2012. [DOI: 10.1021/ma301671x] [Citation(s) in RCA: 154] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Christoph Tonhauser
- Institute of Organic Chemistry,
Organic and Macromolecular Chemistry, Duesbergweg 10-14 Johannes Gutenberg-University (JGU), D-55099 Mainz,
Germany
| | - Adrian Natalello
- Institute of Organic Chemistry,
Organic and Macromolecular Chemistry, Duesbergweg 10-14 Johannes Gutenberg-University (JGU), D-55099 Mainz,
Germany
- Graduate School Materials Science in Mainz, Staudingerweg 9, D-55128
Mainz, Germany
| | - Holger Löwe
- Institute of Organic Chemistry,
Organic and Macromolecular Chemistry, Duesbergweg 10-14 Johannes Gutenberg-University (JGU), D-55099 Mainz,
Germany
- Institut für Mikrotechnik Mainz GmbH, Carl-Zeiss-Strasse 18-22, 55129
Mainz, Germany
| | - Holger Frey
- Institute of Organic Chemistry,
Organic and Macromolecular Chemistry, Duesbergweg 10-14 Johannes Gutenberg-University (JGU), D-55099 Mainz,
Germany
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38
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Marchenko I, Yashchenok A, Borodina T, Bukreeva T, Konrad M, Möhwald H, Skirtach A. Controlled enzyme-catalyzed degradation of polymeric capsules templated on CaCO₃: influence of the number of LbL layers, conditions of degradation, and disassembly of multicompartments. J Control Release 2012; 162:599-605. [PMID: 22902593 DOI: 10.1016/j.jconrel.2012.08.006] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 08/01/2012] [Accepted: 08/04/2012] [Indexed: 11/18/2022]
Abstract
Enzyme-catalyzed degradation of CaCO₃-templated capsules is presented. We investigate a) biodegradable, b) mixed biodegradable/synthetic, and c) multicompartment polyelectrolyte multilayer capsules with different numbers of polymer layers. Using confocal laser scanning microscopy we observed the kinetics of the non-specific protease Pronase-induced degradation of capsules is slowed down on the order of hours by either increasing the number of layers in the wall of biodegradable capsules, or by inserting synthetic polyelectrolyte multilayers into the shell comprised of biodegradable polymers. The degradation rate increases with the concentration of Pronase. Controlled detachment of subcompartments of multicompartment capsules, with potential for intracellular delivery or in-vivo applications, is also shown.
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Affiliation(s)
- Irina Marchenko
- Institute of Crystallography, Russian Academy of Sciences, Moscow 119333, Russia
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39
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An HZ, Helgeson ME, Doyle PS. Nanoemulsion composite microgels for orthogonal encapsulation and release. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:3838-3895. [PMID: 22451097 DOI: 10.1002/adma.201200214] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Indexed: 05/31/2023]
Affiliation(s)
- Harry Z An
- Massachusetts Institute of Technology, 77 Massachusetts Avenue, Room 66-270, Cambridge, MA 02139, USA
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