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Liu F, Kuai L, Lin C, Chen M, Chen X, Zhong F, Wang T. Respiration-Triggered Release of Cinnamaldehyde from a Biomolecular Schiff Base Composite for Preservation of Perishable Food. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2306056. [PMID: 38126663 PMCID: PMC10916653 DOI: 10.1002/advs.202306056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 12/09/2023] [Indexed: 12/23/2023]
Abstract
One-third of the food produced worldwide is wasted annually and never consumed, of which ≈ 40-50% are perishable vegetables and fruits (VFs). Although various methods are proposed to reduce this loss, high manufacturing costs and food safety concerns pose significant challenges for the preservation of VFs. Herein, a respiration-triggered, self-saving strategy for the preservation of perishable products based on a biomolecular Schiff base composite fabricated by imidization of chitosan and cinnamaldehyde (CS-Cin) is reported. Ripening of VFs produces acid moisture and triggers a Schiff base reaction in CS-Cin, permitting the release of volatile Cin into the storage space. This enables versatile preservation by placing CS-Cin on the side without the need to touch the food, like the desiccant packet in a food packaging bag, while the rotting of VFs is retarded in a self-saving manner. As a result, the lifetimes of broccoli and strawberries are extended from 2 to 8 days. Furthermore, CS-Cin with restored preservative properties can be repeatedly recycled from used CS via imidization with Cin. Compared with conventional techniques, the preservatives are easy to use, versatile, and cost-effective, and the respiration-responsive release of Cin empowers a self-saving approach toward the smart preservation of perishable food.
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Affiliation(s)
- Fei Liu
- School of Food Science and TechnologyJiangnan UniversityWuxi214122China
- National Engineering Research Center for Cereal Fermentation and Food BiomanufacturingJiangnan UniversityWuxi214122China
- International Joint Laboratory on Food SafetyJiangnan UniversityWuxi214122China
- Jiaxing Institute of Future FoodJiaxing314050China
- Science Center for Future FoodsJiangnan UniversityWuxi214122China
| | - Lingyun Kuai
- School of Food Science and TechnologyJiangnan UniversityWuxi214122China
- National Engineering Research Center for Cereal Fermentation and Food BiomanufacturingJiangnan UniversityWuxi214122China
- International Joint Laboratory on Food SafetyJiangnan UniversityWuxi214122China
| | - Chen Lin
- School of Food Science and TechnologyJiangnan UniversityWuxi214122China
- National Engineering Research Center for Cereal Fermentation and Food BiomanufacturingJiangnan UniversityWuxi214122China
| | - Maoshen Chen
- School of Food Science and TechnologyJiangnan UniversityWuxi214122China
- National Engineering Research Center for Cereal Fermentation and Food BiomanufacturingJiangnan UniversityWuxi214122China
- International Joint Laboratory on Food SafetyJiangnan UniversityWuxi214122China
| | - Xing Chen
- School of Food Science and TechnologyJiangnan UniversityWuxi214122China
| | - Fang Zhong
- School of Food Science and TechnologyJiangnan UniversityWuxi214122China
- International Joint Laboratory on Food SafetyJiangnan UniversityWuxi214122China
- Jiaxing Institute of Future FoodJiaxing314050China
- Science Center for Future FoodsJiangnan UniversityWuxi214122China
| | - Tao Wang
- School of Food Science and TechnologyJiangnan UniversityWuxi214122China
- National Engineering Research Center for Cereal Fermentation and Food BiomanufacturingJiangnan UniversityWuxi214122China
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Lopez-Mendez TB, Santos-Vizcaino E, Pedraz JL, Orive G, Hernandez RM. Cell microencapsulation technologies for sustained drug delivery: Latest advances in efficacy and biosafety. J Control Release 2021; 335:619-636. [PMID: 34116135 DOI: 10.1016/j.jconrel.2021.06.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 06/04/2021] [Accepted: 06/06/2021] [Indexed: 10/21/2022]
Abstract
The development of cell microencapsulation systems began several decades ago. However, today few systems have been tested in clinical trials. For this reason, in the last years, researchers have directed efforts towards trying to solve some of the key aspects that still limit efficacy and biosafety, the two major criteria that must be satisfied to reach the clinical practice. Regarding the efficacy, which is closely related to biocompatibility, substantial improvements have been made, such as the purification or chemical modification of the alginates that normally form the microspheres. Each of the components that make up the microcapsules has been carefully selected to avoid toxicities that can damage the encapsulated cells or generate an immune response leading to pericapsular fibrosis. As for the biosafety, researchers have developed biological circuits capable of actively responding to the needs of the patients to precisely and accurately release the demanded drug dose. Furthermore, the structure of the devices has been subject of study to adequately protect the encapsulated cells and prevent their spread in the body. The objective of this review is to describe the latest advances made by scientist to improve the efficacy and biosafety of cell microencapsulation systems for sustained drug delivery, also highlighting those points that still need to be optimized.
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Affiliation(s)
- Tania B Lopez-Mendez
- NanoBioCel Research Group, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad, 7, 01006 Vitoria-Gasteiz, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, 28029 Madrid, Spain
| | - Edorta Santos-Vizcaino
- NanoBioCel Research Group, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad, 7, 01006 Vitoria-Gasteiz, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, 28029 Madrid, Spain; Bioaraba, NanoBioCel Research Group, Vitoria-Gasteiz, Spain
| | - Jose Luis Pedraz
- NanoBioCel Research Group, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad, 7, 01006 Vitoria-Gasteiz, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, 28029 Madrid, Spain; Bioaraba, NanoBioCel Research Group, Vitoria-Gasteiz, Spain
| | - Gorka Orive
- NanoBioCel Research Group, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad, 7, 01006 Vitoria-Gasteiz, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, 28029 Madrid, Spain; Bioaraba, NanoBioCel Research Group, Vitoria-Gasteiz, Spain; University Institute for Regenerative Medicine and Oral Implantology - UIRMI (UPV/EHU-Fundación Eduardo Anitua), BTI Biotechnology Institute, Vitoria-Gasteiz, Spain; Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, Singapore.
| | - Rosa Maria Hernandez
- NanoBioCel Research Group, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad, 7, 01006 Vitoria-Gasteiz, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, 28029 Madrid, Spain; Bioaraba, NanoBioCel Research Group, Vitoria-Gasteiz, Spain.
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Amine Functionalized Wheat Bran Husk as Bio-Based Organic Adsorbent for Low-Density Polyethylene Composite of Carbon Dioxide Capture. Macromol Res 2021. [DOI: 10.1007/s13233-020-8172-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Mu XT, Li Y, Ju XJ, Yang XL, Xie R, Wang W, Liu Z, Chu LY. Microfluidic Fabrication of Structure-Controlled Chitosan Microcapsules via Interfacial Cross-Linking of Droplet Templates. ACS APPLIED MATERIALS & INTERFACES 2020; 12:57514-57525. [PMID: 33301686 DOI: 10.1021/acsami.0c14656] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this work, a simple and flexible method for the fabrication of chitosan microcapsules with controllable structures and functions via the interfacial cross-linking reaction of the water-in-oil (W/O) emulsion templates is developed. The interfacial cross-linking reactions of chitosan and terephthalaldehyde (TPA) in W/O emulsion templates are comprehensively studied. The interfacial cross-linking reactions of the droplet templates in both batchwise and continuous conditions are studied. A poly(dimethylsiloxane) (PDMS) droplet-capture microfluidic chip is fabricated to investigate the interfacial reaction in continuous conditions online. In this study, the size and shell thickness of the microcapsules are affected by the preparation condition, such as the template size, emulsifier concentration, TPA concentration, and cross-linking time. Moreover, the size and shell thickness changes of chitosan microcapsules prepared in continuous conditions are much faster than those prepared in batchwise conditions. By regulating the preparation parameters, the microcapsules with controllable structures are fabricated in both batchwise and continuous conditions. The drug release behaviors of the microcapsules with controllable structures are studied. Furthermore, by adding magnetic nanoparticles to the aqueous solution, magnetic-responsive microcapsules are fabricated easily. This work provides valuable guidance for the controllable fabrication of chitosan microcapsules with designed structures and functions via single emulsion templates.
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Affiliation(s)
- Xiao-Ting Mu
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Yao Li
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Xiao-Jie Ju
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Xiu-Lan Yang
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Rui Xie
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Wei Wang
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Zhuang Liu
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Liang-Yin Chu
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
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Bielski R, Witczak ZJ, Newport JFL. Carbohydrate-Based Micro/Nanocapsules With Controlled External Surface for Medical Applications. Front Chem 2020; 8:545. [PMID: 32676496 PMCID: PMC7333594 DOI: 10.3389/fchem.2020.00545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 05/27/2020] [Indexed: 11/26/2022] Open
Abstract
Micro/nanocapsules would have many more applications if we were able to controllably populate their surface with various chemical moieties. The present review introduces a novel variant of interfacial polymerization (IP) as a very robust method of manufacturing reservoir micro/nanocapsules equipped with several different functionalities on the capsules' surface. We call the method—IPCESCO (Interfacial Polymerization for Capsules' External Surface Control). As always in IP, the capsules' forming reaction is between monomers dissolved in opposite phases (oil or water) and takes place at the interface. Each monomer carries two or more functionalities reacting with functional groups of the monomer dissolved in the other phase. IPCESCO requires that one or both monomers are additionally equipped with (protected) functional groups interfering neither with the payload nor with the polymer formation. These additional groups end up everywhere in the polymeric shell but most importantly they are present on the external surface of capsules. These “handles” allow for the introduction of various moieties onto the capsules' surface. Since carbohydrate chemists developed a plurality of protecting and deprotecting methods for various functional groups such as aldehyde and hydroxyl, modified mono, and oligosaccharides are particularly well-suited to act as monomers in IPCESCO. The article discusses possible monomers and their synthesis, the transformation of protected reactive groups on the external capsules' surface into the desired functionalities, the control of the number of moieties on the surface and the capsules surface's architecture. The most important application of the novel encapsulation technology is in drug delivery. Possible surface units facilitating capsules' transport in the body, delivery to specific locations and mechanisms of capsules rupture are also addressed. Other applications of novel capsules include an ultra-sensitive quantitation and removal of pathogens, transport of nutrients in plants, detection of various antigens and other parameters in single cells.
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Affiliation(s)
- Roman Bielski
- Department of Pharmaceutical Sciences, Wilkes University, Wilkes Barre, PA, United States
| | - Zbigniew J Witczak
- Department of Pharmaceutical Sciences, Wilkes University, Wilkes Barre, PA, United States
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Zeeshan F, Madheswaran T, Pandey M, Gorain B. Three-Dimensional (3-D) Printing Technology Exploited for the Fabrication of Drug Delivery Systems. Curr Pharm Des 2019; 24:5019-5028. [PMID: 30621558 DOI: 10.2174/1381612825666190101111525] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 12/18/2018] [Accepted: 12/26/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND The conventional dosage forms cannot be administered to all patients because of interindividual variability found among people of different race coupled with different metabolism and cultural necessities. Therefore, to address this global issue there is a growing focus on the fabrication of new drug delivery systems customised to individual needs. Medicinal products printed using 3-D technology are transforming the current medicine business to a plausible alternative of conventional medicines. METHODS The PubMed database and Google scholar were browsed by keywords of 3-D printing, drug delivery, and personalised medicine. The data about techniques employed in the manufacturing of 3-D printed medicines and the application of 3-D printing technology in the fabrication of individualised medicine were collected, analysed and discussed. RESULTS Numerous techniques can fabricate 3-D printed medicines however, printing-based inkjet, nozzle-based deposition and laser-based writing systems are the most popular 3-D printing methods which have been employed successfully in the development of tablets, polypills, implants, solutions, nanoparticles, targeted and topical dug delivery. In addition, the approval of Spritam® containing levetiracetam by FDA as the primary 3-D printed drug product has boosted its importance. However, some drawbacks such as suitability of manufacturing techniques and the available excipients for 3-D printing need to be addressed to ensure simple, feasible, reliable and reproducible 3-D printed fabrication. CONCLUSION 3-D printing is a revolutionary in pharmaceutical technology to cater the present and future needs of individualised medicines. Nonetheless, more investigations are required on its manufacturing aspects in terms cost effectiveness, reproducibility and bio-equivalence.
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Affiliation(s)
- Farrukh Zeeshan
- Department of Pharmaceutical Technology, School of Pharmacy, International Medical University (IMU), Kuala Lumpur-57000, Malaysia
| | - Thiagarajan Madheswaran
- Department of Pharmaceutical Technology, School of Pharmacy, International Medical University (IMU), Kuala Lumpur-57000, Malaysia
| | - Manisha Pandey
- Department of Pharmaceutical Technology, School of Pharmacy, International Medical University (IMU), Kuala Lumpur-57000, Malaysia
| | - Bapi Gorain
- School of Pharmacy, Faculty of Health and Medical Science, Taylor's University, Selangor-47500, Malaysia
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Zheng G, Liu X, Hu M, Zhao D, Yu W. Two types of polyelectrolyte multilayers hydrogel membrane based on chitosan and alginate with different self-assembled process for control L929 cell behavior. Int J Biol Macromol 2019; 140:1134-1146. [DOI: 10.1016/j.ijbiomac.2019.08.175] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 07/25/2019] [Accepted: 08/20/2019] [Indexed: 01/25/2023]
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He N, Chen X, Wang L, Wen J, Li Y, Cao Q, Liu Z, Li B. Fabrication of Composite Hydrogels Based on Soy Protein Isolate and their Controlled Globular Protein Delivery. GLOBAL CHALLENGES (HOBOKEN, NJ) 2019; 3:1900030. [PMID: 31565399 PMCID: PMC6733490 DOI: 10.1002/gch2.201900030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/14/2019] [Indexed: 05/14/2023]
Abstract
Soy protein isolate (SPI) protein/polymer composite hydrogels (PPCGs) are fabricated in a urea solution of SPI using acrylic acid as monomer, ammonium persulphate (APS) as initiator, and N,N-methylenebisacrylamide (BIS) and glutaraldehyde (GA) as cross-linking agents. The scanning electron microscope (SEM) results show that SPI/polyacrylic (PAA) composite hydrogels formed network structure. In particular, in the absence of cross-linking agent (GA), the network structure of composite hydrogels is also formed by BIS cross-linking chains of PAA and the hydrophobic interactions between peptides from SPI and chain of PAA. In addition, composite hydrogels have good water absorption and present excellent pH sensitivity. Composite hydrogels adsorb bovine serum albumin (BSA) with higher adsorption capacity. BSA is the control released in pH 7.4 buffers and the accumulative release ratio achieved is 90%. It will be expected that these protein/polymer composite hydrogels could be applied for drug sustained release materials.
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Affiliation(s)
- Naipu He
- School of Chemical and Biological EngineeringLanzhou Jiaotong UniversityLanzhou730070China
| | - Xiunan Chen
- School of Chemical and Biological EngineeringLanzhou Jiaotong UniversityLanzhou730070China
| | - Li Wang
- School of Chemical and Biological EngineeringLanzhou Jiaotong UniversityLanzhou730070China
| | - Jing Wen
- School of Chemical and Biological EngineeringLanzhou Jiaotong UniversityLanzhou730070China
| | - Yuhong Li
- School of Chemical and Biological EngineeringLanzhou Jiaotong UniversityLanzhou730070China
| | - Qi Cao
- School of Chemical and Biological EngineeringLanzhou Jiaotong UniversityLanzhou730070China
| | - Zaiman Liu
- School of Chemical and Biological EngineeringLanzhou Jiaotong UniversityLanzhou730070China
| | - Baiyu Li
- School of Chemical and Biological EngineeringLanzhou Jiaotong UniversityLanzhou730070China
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Li J, Zou J, Xiao H, He B, Hou X, Qian L. Preparation of Novel Nano-Sized Hydrogel Microcapsules via Layer-By-Layer Assembly as Delivery Vehicles for Drugs onto Hygiene Paper. Polymers (Basel) 2018; 10:E335. [PMID: 30966370 PMCID: PMC6414901 DOI: 10.3390/polym10030335] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 02/27/2018] [Accepted: 03/15/2018] [Indexed: 01/07/2023] Open
Abstract
Hydrogel microcapsules are improved transplantation delivery vehicles for pharmaceuticals by effectively segregating the active ingredients from the surroundings and delivering them to a certain target site. Layer-by-layer (LbL) assembly is an attractive process to fabricate the nano-sized hydrogel microcapsules. In this study, nano-sized hydrogel microcapsules were prepared through LbL assembly using calcium carbonate nanoparticles (CaCO₃ NPs) as the sacrificial inorganic template, sodium alginate (SA) and polyethyleneimine (PEI) as the shell materials. Ciprofloxacin was used to study the encapsulation and release properties of the hydrogel microcapsules. The hydrogel microcapsules were further adsorbed onto the paper to render antimicrobial properties. The results showed that the mean size of the CaCO₃ template was reduced after dispersing into sodium n-dodecyl sulfate (SDS) solution under sonication. Transmission electron microscope (TEM) and atomic force microscope (AFM) revealed that some hydrogel microcapsules had a diameter under 200 nm, typical creases and collapses were found on the surface. The nano-sized PEI/SA hydrogel microcapsules showed high loading capacity of ciprofloxacin and a sustained release. PEI/SA hydrogel microcapsules rendered good antimicrobial properties onto the paper by the adsorption of hydrogel microcapsules, however, the mechanical properties of the hygiene paper were decreased.
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Affiliation(s)
- Junrong Li
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Jing Zou
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
- Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada.
| | - Huining Xiao
- Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada.
| | - Beihai He
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Xiaobang Hou
- Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada.
- Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China.
| | - Liying Qian
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
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Osouli-Bostanabad K, Adibkia K. Made-on-demand, complex and personalized 3D-printed drug products. BIOIMPACTS : BI 2018; 8:77-79. [PMID: 29977828 PMCID: PMC6026524 DOI: 10.15171/bi.2018.09] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 03/01/2018] [Indexed: 02/06/2023]
Abstract
Layer-by-layer fabrication of three dimensional (3D) objects from digital models is called 3D printing. This technology established just about three decades ago at the confluence of materials science, chemistry, robotics, and optics researches to ease the fabrication of UV-cured resin prototypes. The 3D technology was rapidly considered as a standard instrument in the aerospace, automotive, and consumer goods production factories. Nowadays, research interests in the 3D printed products have been raised and achieved ever-increasing traction in the pharmaceutical industry; so that, the first 3D printed drug product was approved by FDA in August 2015. This editorial summarizes the competitive advantages of the 3D printing for the made-on-demand, personalized and complex products, manufacturing of which establish opportunities for enhancing the accessibility, effectiveness, and safety of drugs.
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Affiliation(s)
- Karim Osouli-Bostanabad
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
- Students Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Khosro Adibkia
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
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Yang W, Zhang R, Wu Y, Pei X, Liu Y, Zhou F. Enhancement of graft density and chain length of hydrophilic polymer brush for effective marine antifouling. J Appl Polym Sci 2018. [DOI: 10.1002/app.46232] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Wufang Yang
- State Key Laboratory of Solid Lubrication; Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Tianshui middle Rd; Lanzhou 730000 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Ran Zhang
- State Key Laboratory of Solid Lubrication; Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Tianshui middle Rd; Lanzhou 730000 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Yang Wu
- State Key Laboratory of Solid Lubrication; Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Tianshui middle Rd; Lanzhou 730000 China
| | - Xiaowei Pei
- State Key Laboratory of Solid Lubrication; Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Tianshui middle Rd; Lanzhou 730000 China
| | - Yupeng Liu
- State Key Laboratory of Solid Lubrication; Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Tianshui middle Rd; Lanzhou 730000 China
| | - Feng Zhou
- State Key Laboratory of Solid Lubrication; Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Tianshui middle Rd; Lanzhou 730000 China
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Nanda HS, Shah AH, Wicaksono G, Pokholenko O, Gao F, Djordjevic I, Steele TWJ. Nonthrombogenic Hydrogel Coatings with Carbene-Cross-Linking Bioadhesives. Biomacromolecules 2018; 19:1425-1434. [DOI: 10.1021/acs.biomac.8b00074] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Himansu Sekhar Nanda
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
- Department of Mechanical Engineering, PDPM-Indian Institute of Information Technology, Design and Manufacturing (IIITDM)-Jabalpur, Dumna Airport Road, Jabalpur-482005, Madhya Pradesh, India
| | - Ankur Harish Shah
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
| | - Gautama Wicaksono
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
| | - Oleksandr Pokholenko
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
| | - Feng Gao
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
| | - Ivan Djordjevic
- School of Engineering and Sciences, Tecnologico de Monterrey, Monterrey, Nuevo León 64849, Mexico
| | - Terry W. J. Steele
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
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Vaithilingam V, Steinkjer B, Ryan L, Larsson R, Tuch BE, Oberholzer J, Rokstad AM. In Vitro and In Vivo Biocompatibility Evaluation of Polyallylamine and Macromolecular Heparin Conjugates Modified Alginate Microbeads. Sci Rep 2017; 7:11695. [PMID: 28916826 PMCID: PMC5600981 DOI: 10.1038/s41598-017-11989-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 08/29/2017] [Indexed: 11/09/2022] Open
Abstract
Host reactivity to biocompatible immunoisolation devices is a major challenge for cellular therapies, and a human screening model would be of great value. We designed new types of surface modified barium alginate microspheres, and evaluated their inflammatory properties using human whole blood, and the intraperitoneal response after three weeks in Wistar rats. Microspheres were modified using proprietary polyallylamine (PAV) and coupled with macromolecular heparin conjugates (Corline Heparin Conjugate, CHC). The PAV-CHC strategy resulted in uniform and stable coatings with increased anti-clot activity and low cytotoxicity. In human whole blood, PAV coating at high dose (100 µg/ml) induced elevated complement, leukocyte CD11b and inflammatory mediators, and in Wistar rats increased fibrotic overgrowth. Coating of high dose PAV with CHC significantly reduced these responses. Low dose PAV (10 µg/ml) ± CHC and unmodified alginate microbeads showed low responses. That the human whole blood inflammatory reactions paralleled the host response shows a link between inflammatory potential and initial fibrotic response. CHC possessed anti-inflammatory activity, but failed to improve overall biocompatibility. We conclude that the human whole blood assay is an efficient first-phase screening model for inflammation, and a guiding tool in development of new generation microspheres for cell encapsulation therapy.
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Affiliation(s)
- Vijayaganapathy Vaithilingam
- Materials Science and Engineering, Commonwealth Scientific and Industrial Research Organization (CSIRO), North Ryde, New South Wales, Australia
| | - Bjørg Steinkjer
- Centre of Molecular Inflammation Research and Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Liv Ryan
- Centre of Molecular Inflammation Research and Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Rolf Larsson
- Corline System AB, Uppsala, Sweden.,Department of Immunology, Genetics and Pathology, University of Uppsala, Uppsala, Sweden
| | - Bernard Edward Tuch
- Materials Science and Engineering, Commonwealth Scientific and Industrial Research Organization (CSIRO), North Ryde, New South Wales, Australia. .,School of Medical Sciences, University of Sydney, Sydney, New South Wales, Australia.
| | - Jose Oberholzer
- Department of Surgery, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Anne Mari Rokstad
- Centre of Molecular Inflammation Research and Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.,The Central Norway Regional Health Authority (RHA), Trondheim, Norway
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14
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Liew KH, Rocha M, Pereira C, Pires AL, Pereira AM, Yarmo MA, Juan JC, Yusop RM, Peixoto AF, Freire C. Highly Active Ruthenium Supported on Magnetically Recyclable Chitosan-Based Nanocatalyst for Nitroarenes Reduction. ChemCatChem 2017. [DOI: 10.1002/cctc.201700649] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Kin Hong Liew
- REQUIMTE-LAQV, Department of Chemistry and Biochemistry, Faculty of Sciences; University of Porto; 4169-007 Porto Portugal
- School of Chemical Sciences and Food Technology; Faculty of Science and Technology; Universiti Kebangsaan Malaysia; 43600 UKM Bangi Selangor Darul Ehsan Malaysia
| | - Mariana Rocha
- REQUIMTE-LAQV, Department of Chemistry and Biochemistry, Faculty of Sciences; University of Porto; 4169-007 Porto Portugal
| | - Clara Pereira
- REQUIMTE-LAQV, Department of Chemistry and Biochemistry, Faculty of Sciences; University of Porto; 4169-007 Porto Portugal
| | - Ana L. Pires
- IFIMUP-IN, Department of Physics and Astronomy, Faculty of Sciences; University of Porto; 4169-007 Porto Portugal
| | - André M. Pereira
- IFIMUP-IN, Department of Physics and Astronomy, Faculty of Sciences; University of Porto; 4169-007 Porto Portugal
| | - Mohd Ambar Yarmo
- School of Chemical Sciences and Food Technology; Faculty of Science and Technology; Universiti Kebangsaan Malaysia; 43600 UKM Bangi Selangor Darul Ehsan Malaysia
| | - Joon Ching Juan
- Nanotechnology & Catalysis Research Centre, NANOCAT; University of Malaya; 50603 Kuala Lumpur Malaysia
| | - Rahimi M. Yusop
- School of Chemical Sciences and Food Technology; Faculty of Science and Technology; Universiti Kebangsaan Malaysia; 43600 UKM Bangi Selangor Darul Ehsan Malaysia
| | - Andreia F. Peixoto
- REQUIMTE-LAQV, Department of Chemistry and Biochemistry, Faculty of Sciences; University of Porto; 4169-007 Porto Portugal
| | - Cristina Freire
- REQUIMTE-LAQV, Department of Chemistry and Biochemistry, Faculty of Sciences; University of Porto; 4169-007 Porto Portugal
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15
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Vaithilingam V, Evans MDM, Lewy DM, Bean PA, Bal S, Tuch BE. Co-encapsulation and co-transplantation of mesenchymal stem cells reduces pericapsular fibrosis and improves encapsulated islet survival and function when allografted. Sci Rep 2017; 7:10059. [PMID: 28855611 PMCID: PMC5577272 DOI: 10.1038/s41598-017-10359-1] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 08/09/2017] [Indexed: 12/22/2022] Open
Abstract
Pericapsular fibrotic overgrowth (PFO) is associated with poor survival of encapsulated islets. A strategy to combat PFO is the use of mesenchymal stem cells (MSC). MSC have anti-inflammatory properties and their potential can be enhanced by stimulation with proinflammatory cytokines. This study investigated whether co-encapsulation or co-transplantation of MSC with encapsulated islets would reduce PFO and improve graft survival. Stimulating MSC with a cytokine cocktail of IFN-γ and TNF-α enhanced their immunosuppressive potential by increasing nitric oxide production and secreting higher levels of immunomodulatory cytokines. In vitro, co-encapsulation with MSC did not affect islet viability but significantly enhanced glucose-induced insulin secretion. In vivo, normoglycemia was achieved in 100% mice receiving islets co-encapsulated with stimulated MSC as opposed to 71.4% receiving unstimulated MSC and only 9.1% receiving encapsulated islets alone. Microcapsules retrieved from both unstimulated and stimulated MSC groups had significantly less PFO with improved islet viability and function compared to encapsulated islets alone. Levels of peritoneal immunomodulatory cytokines IL-4, IL-6, IL-10 and G-CSF were significantly higher in MSC co-encapsulated groups. Similar results were obtained when encapsulated islets and MSC were co-transplanted. In summary, co-encapsulation or co-transplantation of MSC with encapsulated islets reduced PFO and improved the functional outcome of allotransplants.
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Affiliation(s)
- Vijayaganapathy Vaithilingam
- Biomedical Manufacturing Research Program, Commonwealth Scientific and Industrial Research Organization (CSIRO), Manufacturing Flagship, North Ryde, New South Wales, Australia.
| | - Margaret D M Evans
- Biomedical Manufacturing Research Program, Commonwealth Scientific and Industrial Research Organization (CSIRO), Manufacturing Flagship, North Ryde, New South Wales, Australia
| | - Denise M Lewy
- Biomedical Manufacturing Research Program, Commonwealth Scientific and Industrial Research Organization (CSIRO), Manufacturing Flagship, North Ryde, New South Wales, Australia
| | - Penelope A Bean
- Biomedical Manufacturing Research Program, Commonwealth Scientific and Industrial Research Organization (CSIRO), Manufacturing Flagship, North Ryde, New South Wales, Australia
| | - Sumeet Bal
- Biomedical Manufacturing Research Program, Commonwealth Scientific and Industrial Research Organization (CSIRO), Manufacturing Flagship, North Ryde, New South Wales, Australia
| | - Bernard E Tuch
- Biomedical Manufacturing Research Program, Commonwealth Scientific and Industrial Research Organization (CSIRO), Manufacturing Flagship, North Ryde, New South Wales, Australia
- Australian Foundation for Diabetes Research, Sydney, New South Wales, Australia, previously at CSIRO Manufacturing Flagship, North Ryde, New South Wales, Australia
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16
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Abstract
Transplantation of pancreatic islets encapsulated within immuno-protective microcapsules is a strategy that has the potential to overcome graft rejection without the need for toxic immunosuppressive medication. However, despite promising preclinical studies, clinical trials using encapsulated islets have lacked long-term efficacy, and although generally considered clinically safe, have not been encouraging overall. One of the major factors limiting the long-term function of encapsulated islets is the host's immunological reaction to the transplanted graft which is often manifested as pericapsular fibrotic overgrowth (PFO). PFO forms a barrier on the capsule surface that prevents the ingress of oxygen and nutrients leading to islet cell starvation, hypoxia and death. The mechanism of PFO formation is still not elucidated fully and studies using a pig model have tried to understand the host immune response to empty alginate microcapsules. In this review, the varied strategies to overcome or reduce PFO are discussed, including alginate purification, altering microcapsule geometry, modifying alginate chemical composition, co-encapsulation with immunomodulatory cells, administration of pharmacological agents, and alternative transplantation sites. Nanoencapsulation technologies, such as conformal and layer-by-layer coating technologies, as well as nanofiber, thin-film nanoporous devices, and silicone based NanoGland devices are also addressed. Finally, this review outlines recent progress in imaging technologies to track encapsulated cells, as well as promising perspectives concerning the production of insulin-producing cells from stem cells for encapsulation.
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Affiliation(s)
- Vijayaganapathy Vaithilingam
- Materials Science and Engineering, Commonwealth Scientific and Industrial Research Organization (CSIRO), North Ryde, New South Wales, Australia
| | - Sumeet Bal
- Materials Science and Engineering, Commonwealth Scientific and Industrial Research Organization (CSIRO), North Ryde, New South Wales, Australia
| | - Bernard E Tuch
- School of Medical Sciences, The University of Sydney, Sydney, New South Wales, Australia
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17
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He G, Zhu C, Ye S, Cai W, Yin Y, Zheng H, Yi Y. Preparation and properties of novel hydrogel based on chitosan modified by poly(amidoamine) dendrimer. Int J Biol Macromol 2016; 91:828-37. [DOI: 10.1016/j.ijbiomac.2016.05.091] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 05/24/2016] [Accepted: 05/25/2016] [Indexed: 12/17/2022]
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18
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Zheng H, Gao M, Ren Y, Lou R, Xie H, Yu W, Liu X, Ma X. Controlling Gel Structure to Modulate Cell Adhesion and Spreading on the Surface of Microcapsules. ACS APPLIED MATERIALS & INTERFACES 2016; 8:19333-19342. [PMID: 27404911 DOI: 10.1021/acsami.6b05778] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The surface properties of implanted materials or devices play critical roles in modulating cell behavior. However, the surface properties usually affect cell behaviors synergetically so that it is still difficult to separately investigate the influence of a single property on cell behavior in practical applications. In this study, alginate-chitosan (AC) microcapsules with a dense or loose gel structure were fabricated to understand the effect of gel structure on cell behavior. Cells preferentially adhered and spread on the loose gel structure microcapsules rather than on the dense ones. The two types of microcapsules exhibited nearly identical surface positive charges, roughness, stiffness, and hydrophilicity; thus, the result suggested that the gel structure was the principal factor affecting cell behavior. X-ray photoelectron spectroscopy analyses demonstrated that the overall percentage of positively charged amino groups was similar on both microcapsules. The different gel structures led to different states and distributions of the positively charged amino groups of chitosan, so we conclude that the loose gel structure facilitated greater cell adhesion and spreading mainly because more protonated amino groups remained unbound and exposed on the surface of these microcapsules.
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Affiliation(s)
- Huizhen Zheng
- Laboratory of Biomedical Materials Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , 457 Zhongshan Road, Dalian 116023, PR China
- University of the Chinese Academy of Sciences , Beijing 100049, PR China
| | - Meng Gao
- Laboratory of Biomedical Materials Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , 457 Zhongshan Road, Dalian 116023, PR China
- University of the Chinese Academy of Sciences , Beijing 100049, PR China
| | - Ying Ren
- Laboratory of Biomedical Materials Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , 457 Zhongshan Road, Dalian 116023, PR China
- University of the Chinese Academy of Sciences , Beijing 100049, PR China
| | - Ruyun Lou
- Laboratory of Biomedical Materials Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , 457 Zhongshan Road, Dalian 116023, PR China
- University of the Chinese Academy of Sciences , Beijing 100049, PR China
| | - Hongguo Xie
- Laboratory of Biomedical Materials Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , 457 Zhongshan Road, Dalian 116023, PR China
| | - Weiting Yu
- Laboratory of Biomedical Materials Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , 457 Zhongshan Road, Dalian 116023, PR China
| | - Xiudong Liu
- College of Environment and Chemical Engineering, Dalian University , Dalian Economic Technological Development Zone, Dalian 116622, PR China
| | - Xiaojun Ma
- Laboratory of Biomedical Materials Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , 457 Zhongshan Road, Dalian 116023, PR China
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19
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Mahou R, Passemard S, Carvello M, Petrelli A, Noverraz F, Gerber-Lemaire S, Wandrey C. Contribution of polymeric materials to progress in xenotransplantation of microencapsulated cells: a review. Xenotransplantation 2016; 23:179-201. [PMID: 27250036 DOI: 10.1111/xen.12240] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 05/09/2016] [Indexed: 12/13/2022]
Abstract
Cell microencapsulation and subsequent transplantation of the microencapsulated cells require multidisciplinary approaches. Physical, chemical, biological, engineering, and medical expertise has to be combined. Several natural and synthetic polymeric materials and different technologies have been reported for the preparation of hydrogels, which are suitable to protect cells by microencapsulation. However, owing to the frequent lack of adequate characterization of the hydrogels and their components as well as incomplete description of the technology, many results of in vitro and in vivo studies appear contradictory or cannot reliably be reproduced. This review addresses the state of the art in cell microencapsulation with special focus on microencapsulated cells intended for xenotransplantation cell therapies. The choice of materials, the design and fabrication of the microspheres, as well as the conditions to be met during the cell microencapsulation process, are summarized and discussed prior to presenting research results of in vitro and in vivo studies. Overall, this review will serve to sensitize medically educated specialists for materials and technological aspects of cell microencapsulation.
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Affiliation(s)
- Redouan Mahou
- Interfaculty Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Institute for Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada
| | - Solène Passemard
- Interfaculty Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Michele Carvello
- Department of Surgery, San Raffaele Scientific Institute, Milan, Italy
| | | | - François Noverraz
- Interfaculty Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Sandrine Gerber-Lemaire
- Interfaculty Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Christine Wandrey
- Interfaculty Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
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20
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Song Y, Zheng G, Zhang D, Lv Y, Li N, Wang X, Yu W, Ma X. Fabrication of a tunable hydrogel membrane for constructing indirect cell coculture system. J Appl Polym Sci 2016. [DOI: 10.1002/app.43100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yizhe Song
- Laboratory of Biomedical Material Engineering; Dalian Institute of Chemical Physics, Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 People's Republic of China
- University of the Chinese Academy of Sciences; 19 Yuquan Road Beijing 100049 People's Republic of China
| | - Guoshuang Zheng
- Laboratory of Biomedical Material Engineering; Dalian Institute of Chemical Physics, Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 People's Republic of China
- University of the Chinese Academy of Sciences; 19 Yuquan Road Beijing 100049 People's Republic of China
| | - Demeng Zhang
- Laboratory of Biomedical Material Engineering; Dalian Institute of Chemical Physics, Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 People's Republic of China
- University of the Chinese Academy of Sciences; 19 Yuquan Road Beijing 100049 People's Republic of China
| | - Yan Lv
- Laboratory of Biomedical Material Engineering; Dalian Institute of Chemical Physics, Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 People's Republic of China
- University of the Chinese Academy of Sciences; 19 Yuquan Road Beijing 100049 People's Republic of China
| | - Na Li
- Laboratory of Biomedical Material Engineering; Dalian Institute of Chemical Physics, Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 People's Republic of China
- University of the Chinese Academy of Sciences; 19 Yuquan Road Beijing 100049 People's Republic of China
| | - Xiuli Wang
- Department of Histology and Embryology, College of Basic Medical Science; Dalian Medical University; Dalian 116044 People's Republic of China
| | - Weiting Yu
- Laboratory of Biomedical Material Engineering; Dalian Institute of Chemical Physics, Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 People's Republic of China
| | - Xiaojun Ma
- Laboratory of Biomedical Material Engineering; Dalian Institute of Chemical Physics, Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 People's Republic of China
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21
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Liu X, Xie H, Zheng H, Ren Y, Wang S, Tan M, Sun G, Wang B, Yu W, Ma X. In situgrafting MPEG on the surface of cell-loaded microcapsules for protein repellency. INT J POLYM MATER PO 2016. [DOI: 10.1080/00914037.2015.1074905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Choonara YE, du Toit LC, Kumar P, Kondiah PPD, Pillay V. 3D-printing and the effect on medical costs: a new era? Expert Rev Pharmacoecon Outcomes Res 2016; 16:23-32. [PMID: 26817398 DOI: 10.1586/14737167.2016.1138860] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
3D-printing (3DP) is the art and science of printing in a new dimension using 3D printers to transform 3D computer aided designs (CAD) into life-changing products. This includes the design of more effective and patient-friendly pharmaceutical products as well as bio-inspired medical devices. It is poised as the next technology revolution for the pharmaceutical and medical-device industries. After decorous implementation scientists in collaboration with CAD designers have produced innovative medical devices ranging from pharmaceutical tablets to surgical transplants of the human face and skull, spinal implants, prosthetics, human organs and other biomaterials. While 3DP may be cost-efficient, a limitation exists in the availability of 3D printable biomaterials for most applications. In addition, the loss of skilled labor in producing medical devices such as prosthetics and other devices may affect developing economies. This review objectively explores the potential growth and impact of 3DP costs in the medical industry.
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Affiliation(s)
- Yahya E Choonara
- a Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences , University of the Witwatersrand, Johannesburg , 7 York Road, Parktown 2193 , South Africa
| | - Lisa C du Toit
- a Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences , University of the Witwatersrand, Johannesburg , 7 York Road, Parktown 2193 , South Africa
| | - Pradeep Kumar
- a Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences , University of the Witwatersrand, Johannesburg , 7 York Road, Parktown 2193 , South Africa
| | - Pierre P D Kondiah
- a Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences , University of the Witwatersrand, Johannesburg , 7 York Road, Parktown 2193 , South Africa
| | - Viness Pillay
- a Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences , University of the Witwatersrand, Johannesburg , 7 York Road, Parktown 2193 , South Africa
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23
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Mo Y, Lin S, Tu Y, Liu G, Hu J, Liu F, Song J. Unimolecular micelles from graft copolymer with binary side chains. RSC Adv 2016. [DOI: 10.1039/c6ra10822a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel amphiphilic binary graft copolymer was synthesized and used to prepare unimolecular micelles by intramolecular association.
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Affiliation(s)
- Yangmiao Mo
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou
- P. R. China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry
| | - Shudong Lin
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou
- P. R. China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry
| | - Yuanyuan Tu
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou
- P. R. China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry
| | - Guojun Liu
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou
- P. R. China
- The University of the Chinese Academy of Science
| | - Jiwen Hu
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou
- P. R. China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry
| | - Feng Liu
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou
- P. R. China
- The University of the Chinese Academy of Science
| | - Jun Song
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou
- P. R. China
- Key Laboratory of Cellulose and Lignocellulosics Chemistry
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24
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Zheng H, Li S, Gao M, Ren Y, Zheng G, Xie H, Yu W, Wang X, Ma X. An improved model for exploring the effect of physicochemical properties of alginate-based microcapsules on their fibrosis formation in vivo. RSC Adv 2016. [DOI: 10.1039/c6ra19294g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An effectivein vitromodel established forexploring the effect ofthephysicochemical properties of alginate-based microcapsules on their fibrosis formation.
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Affiliation(s)
- Huizhen Zheng
- Laboratory of Biomedical Materials Engineering
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Shen Li
- Department of Endocrinology and Metabolism
- Dalian Municipal Central Hospital Affiliated of Dalian Medical University
- Dalian 116033
- P. R. China
| | - Meng Gao
- Laboratory of Biomedical Materials Engineering
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Ying Ren
- Laboratory of Biomedical Materials Engineering
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Guoshuang Zheng
- Laboratory of Biomedical Materials Engineering
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Hongguo Xie
- Laboratory of Biomedical Materials Engineering
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Weiting Yu
- Laboratory of Biomedical Materials Engineering
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Xiuli Wang
- Department of Histology and Embryology
- College of Basic Medical Science
- Dalian Medical University
- Dalian
- P. R. China
| | - Xiaojun Ma
- Laboratory of Biomedical Materials Engineering
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
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25
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Wen H, Dong H, Liu J, Shen A, Li Y, Shi D. Redox-mediated dissociation of PEG–polypeptide-based micelles for on-demand release of anticancer drugs. J Mater Chem B 2016; 4:7859-7869. [PMID: 32263776 DOI: 10.1039/c6tb02364a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The biocompatible polypeptide-based micelles that can rapidly disassemble for on-demand release of DOX under a redox environment are reported.
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Affiliation(s)
- Huiyun Wen
- School of Chemical Engineering
- Northwest University
- Xi'an
- P. R. China
| | - Haiqing Dong
- The Institute for Translational Nanomedicine
- Shanghai East Hospital
- The Institute for Biomedical Engineering & Nano Science (iNANO) Tongji University School of Medicine
- Shanghai
- P. R. China
| | - Jie Liu
- School of Chemical Engineering
- Northwest University
- Xi'an
- P. R. China
| | - Aijun Shen
- Department of Medical Imaging
- Nantong Tumor Hospital
- Nantong University
- Nantong
- P. R. China
| | - Yongyong Li
- The Institute for Translational Nanomedicine
- Shanghai East Hospital
- The Institute for Biomedical Engineering & Nano Science (iNANO) Tongji University School of Medicine
- Shanghai
- P. R. China
| | - Donglu Shi
- The Institute for Translational Nanomedicine
- Shanghai East Hospital
- The Institute for Biomedical Engineering & Nano Science (iNANO) Tongji University School of Medicine
- Shanghai
- P. R. China
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26
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Kolesnyk I, Konovalova V, Burban A. Alginate/κ-Carrageenan Microspheres and their Application for Protein Drugs Controlled Release. CHEMISTRY & CHEMICAL TECHNOLOGY 2015. [DOI: 10.23939/chcht09.04.485] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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27
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Zheng G, Zheng H, Xie H, Liu X, Yu W, Ma X. The cause and influence of sequentially assembling higher and lower deacetylated chitosans on the membrane formation of microcapsule. J Biomed Mater Res A 2015; 104:257-63. [DOI: 10.1002/jbm.a.35562] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 08/26/2015] [Accepted: 09/09/2015] [Indexed: 12/21/2022]
Affiliation(s)
- Guoshuang Zheng
- Laboratory of Biomedical Material Engineering; Dalian Institute of Chemical Physics, Chinese Academy of Sciences; Dalian 116023 China
- Laboratory of Biomedical Material Engineering, University of the Chinese Academy of Sciences; Beijing 100049 China
| | - Huizhen Zheng
- Laboratory of Biomedical Material Engineering; Dalian Institute of Chemical Physics, Chinese Academy of Sciences; Dalian 116023 China
- Laboratory of Biomedical Material Engineering, University of the Chinese Academy of Sciences; Beijing 100049 China
| | - Hongguo Xie
- Laboratory of Biomedical Material Engineering; Dalian Institute of Chemical Physics, Chinese Academy of Sciences; Dalian 116023 China
| | - Xiudong Liu
- College of Environment and Chemical Engineering; Dalian University, Dalian Economic Technological Development Zone; Dalian 116622 China
| | - Weiting Yu
- Laboratory of Biomedical Material Engineering; Dalian Institute of Chemical Physics, Chinese Academy of Sciences; Dalian 116023 China
| | - Xiaojun Ma
- Laboratory of Biomedical Material Engineering; Dalian Institute of Chemical Physics, Chinese Academy of Sciences; Dalian 116023 China
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28
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Wan W, Li Q, Gao H, Ge L, Liu Y, Zhong W, Ouyang J, Xing M. BMSCs laden injectable amino-diethoxypropane modified alginate-chitosan hydrogel for hyaline cartilage reconstruction. J Mater Chem B 2015; 3:1990-2005. [DOI: 10.1039/c4tb01394h] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We developed an injectable hydrogel composed of amino-diethoxypropane modified alginate and chitosan, and also investigated bone marrow mesenchy + mal stromal cells (BMSCs) laden hydrogel for cartilage reconstruction in vitro and in vivo.
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Affiliation(s)
- Wenbing Wan
- Department of Anatomy
- Guangdong Provincial Medical Biomechanical Key Laboratory
- Southern Medical University
- Guangzhou
- China
| | - Qingtao Li
- Department of Anatomy
- Guangdong Provincial Medical Biomechanical Key Laboratory
- Southern Medical University
- Guangzhou
- China
| | - Haiyun Gao
- Department of Mechanical Engineering
- University of Manitoba
- Winnipeg MB
- Canada
- Manitoba Institute of Child Health
| | - Liangpeng Ge
- Department of Mechanical Engineering
- University of Manitoba
- Winnipeg MB
- Canada
- Manitoba Institute of Child Health
| | - Yuqing Liu
- Department of Mechanical Engineering
- University of Manitoba
- Winnipeg MB
- Canada
| | - Wen Zhong
- Department of Textile Sciences
- University of Manitoba
- Canada
| | - Jun Ouyang
- Department of Anatomy
- Guangdong Provincial Medical Biomechanical Key Laboratory
- Southern Medical University
- Guangzhou
- China
| | - Malcolm Xing
- Department of Anatomy
- Guangdong Provincial Medical Biomechanical Key Laboratory
- Southern Medical University
- Guangzhou
- China
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29
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Jia Y, Li J. Molecular assembly of Schiff Base interactions: construction and application. Chem Rev 2014; 115:1597-621. [PMID: 25543900 DOI: 10.1021/cr400559g] [Citation(s) in RCA: 294] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Yi Jia
- Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences , Beijing, 100190, China
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30
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Li S, Zhang Y, Chen L, Li N, Xie H, Guo X, Zhao S, Yu W, Lv Y, Lv G, Wu H, Ma X. The relationship between the inflammatory response and cell adhesion on alginate-chitosan-alginate microcapsules after transplantation. J Biomed Mater Res A 2014; 103:2333-43. [PMID: 25394561 DOI: 10.1002/jbm.a.35369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 10/20/2014] [Accepted: 11/12/2014] [Indexed: 11/06/2022]
Abstract
Cell microencapsulation technology is a potential alternative therapy, but cell overgrowth and adhesion on the microcapsules after transplantation shortens their time of therapeutic efficacy. Inflammatory cells were the main cells that adhered to the microcapsules, so understanding the body's inflammatory processes would help to better identify the mechanisms of cell adhesion to the outer surface of the microcapsules. Our study measured the inflammatory cells and the cytokines and characterized the associated changes in the alginate-chitosan-alginate (ACA) microcapsules 1, 7, 14, and 28 days after implantation in the peritoneal cavity. Then the relationship between the inflammatory response and cell adhesion on the microcapsules was evaluated by multiple regression analysis. The results showed that the microcapsules did not evoke a systemic inflammatory response, but initiated a local inflammatory response in the peritoneal cavity. Furthermore, the correlation analysis showed that the level of cell adhesion on the microcapsules was related to the number of lymphocytes and macrophages, and the amount of IL-6, IL-10, and MCP-1 in the peritoneal cavity. Our results may provide a foundation for reducing the immune response to these microcapsules, prolonging graft survival and improving the efficacy of these treatments.
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Affiliation(s)
- Shen Li
- School of Life Science and Biotechnology, Dalian University of Technology, 2 Ling Gong Road, Dalian, 116044, China.,Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Ying Zhang
- Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Li Chen
- Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing, 100049, China
| | - Na Li
- Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing, 100049, China
| | - Hongguo Xie
- Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Xin Guo
- Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Shan Zhao
- Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Weiting Yu
- Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Yan Lv
- Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Guojun Lv
- Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Huijian Wu
- School of Life Science and Biotechnology, Dalian University of Technology, 2 Ling Gong Road, Dalian, 116044, China.,School of Life Science and Medicine, Dalian University of Technology, Panjin, China
| | - Xiaojun Ma
- Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
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31
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Novel biocompatible pH-stimuli responsive superparamagnetic hybrid hollow microspheres as tumor-specific drug delivery system. Colloids Surf B Biointerfaces 2014; 122:99-106. [DOI: 10.1016/j.colsurfb.2014.06.054] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 06/22/2014] [Accepted: 06/24/2014] [Indexed: 01/01/2023]
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32
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Moulton SE, Wallace GG. 3-dimensional (3D) fabricated polymer based drug delivery systems. J Control Release 2014; 193:27-34. [PMID: 25020039 DOI: 10.1016/j.jconrel.2014.07.005] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 06/26/2014] [Accepted: 07/05/2014] [Indexed: 11/19/2022]
Abstract
Drug delivery from 3-dimensional (3D) structures is a rapidly growing area of research. It is essential to achieve structures wherein drug stability is ensured, the drug loading capacity is appropriate and the desired controlled release profile can be attained. Attention must also be paid to the development of appropriate fabrication machinery that allows 3D drug delivery systems (DDS) to be produced in a simple, reliable and reproducible manner. The range of fabrication methods currently being used to form 3D DDSs include electrospinning (solution and melt), wet-spinning and printing (3-dimensional). The use of these techniques enables production of DDSs from the macro-scale down to the nano-scale. This article reviews progress in these fabrication techniques to form DDSs that possess desirable drug delivery kinetics for a wide range of applications.
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Affiliation(s)
- Simon E Moulton
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Australia; University of Wollongong, Wollongong, NSW 2522, Australia.
| | - Gordon G Wallace
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Australia; University of Wollongong, Wollongong, NSW 2522, Australia.
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33
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Rabanel JM, Hildgen P, Banquy X. Assessment of PEG on polymeric particles surface, a key step in drug carrier translation. J Control Release 2014; 185:71-87. [DOI: 10.1016/j.jconrel.2014.04.017] [Citation(s) in RCA: 177] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 04/10/2014] [Accepted: 04/11/2014] [Indexed: 12/15/2022]
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34
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Liu P. Stabilization of layer-by-layer engineered multilayered hollow microspheres. Adv Colloid Interface Sci 2014; 207:178-88. [PMID: 24321861 DOI: 10.1016/j.cis.2013.11.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Revised: 10/30/2013] [Accepted: 11/18/2013] [Indexed: 01/01/2023]
Abstract
Polymer multilayered hollow microspheres prepared by layer-by-layer (LbL) self-assembly attract more and more interest due to their unique application, especially as drug delivery system (DDS). Unfortunately, the multilayered hollow microspheres assembled via weak linkages could fuse and/or aggregate in high ionic strength media or strong acidic or basic media. This severely restricts the practical applications of the multilayered hollow microspheres as DDS in human physiological medium. In the present work, the progress in stabilization of the multilayered hollow microspheres is reviewed, with emphasis on the assembling process and their crosslinking mechanism.
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35
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Zhao X, Liu P. pH-Sensitive Fluorescent Hepatocyte-Targeting Multilayer Polyelectrolyte Hollow Microspheres as a Smart Drug Delivery System. Mol Pharm 2014; 11:1599-610. [DOI: 10.1021/mp400774v] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Xubo Zhao
- State Key Laboratory
of Applied
Organic Chemistry and Institute of Polymer Science and Engineering,
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Peng Liu
- State Key Laboratory
of Applied
Organic Chemistry and Institute of Polymer Science and Engineering,
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
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36
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Li C, Zhao S, Zhao Y, Qian Y, Li J, Yin Y. Chemically crosslinked alginate porous microcarriers modified with bioactive molecule for expansion of human hepatocellular carcinoma cells. J Biomed Mater Res B Appl Biomater 2014; 102:1648-58. [PMID: 24652712 DOI: 10.1002/jbm.b.33150] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2013] [Revised: 01/25/2014] [Accepted: 03/06/2014] [Indexed: 11/09/2022]
Abstract
Microcarrier is an essential matrix for the large-scale culture of anchorage-dependent cells. In this study, chemical cross-linked alginate porous microcarriers (AMC) were prepared using microemulsion and freeze-drying technology. Moreover, chitosan was coated on the surface of microcarriers (AMC-CS) via electrostatic interactions to improve the mechanical strength. The size of AMC can be modulated through adjusting the concentration of alginate, amount of dispersant and stirring rate. The surface chemical characteristics and morphology of AMC-CS were evaluated by Fourier transformed infrared, X-ray photoelectron spectroscopy, and scanning electron microscope. Fibronectin (Fn) or heparin/basic fibroblast growth factor (bFGF) was then immobilized on the surface of microcarriers via layer-by-layer technology to improve the cytocompatibility. Our data suggested that the size of AMC can be accurately modulated from 90 μm to 900 μm with a narrow size distribution. Micropore structures of AMC-CS were relatively disordered and the pore size ranged between 20 μm and 100 μm. Using AMC after modified with Fn or bFGF as the cell expansion microcarriers, we showed that the proliferation rates of HepG2 cells increased significantly, reaching to more than 30-fold of cell expansion after 10 days of culture, with minor cellular damage caused by the microcarriers. Moreover, the AMC microcarriers modified with Fn or bFGF can increase albumin secretion of HepG2. We suggest that our new modified AMC-based microcarriers will be an attractive candidate for the large-scale cell culture of therapeutic cells.
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Affiliation(s)
- Chunge Li
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China
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37
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Guo SZ, Heuzey MC, Therriault D. Properties of polylactide inks for solvent-cast printing of three-dimensional freeform microstructures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:1142-1150. [PMID: 24410099 DOI: 10.1021/la4036425] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Solvent-cast printing is a highly versatile microfabrication technique that can be used to construct various geometries such as filaments, towers, scaffolds, and freeform circular spirals by the robotic deposition of a polymer solution ink onto a moving stage. In this work, we have performed a comprehensive characterization of the solvent-cast printing process using polylactide (PLA) solutions by analyzing the flow behavior of the solutions, the solvent evaporation kinetics, and the effect of process-related parameters on the crystallization of the extruded filaments. Rotational rheometry at low to moderate shear rates showed a nearly Newtonian behavior of the PLA solutions, while capillary flow analysis based on process-related data indicated shear thinning at high shear rates. Solvent vaporization tests suggested that the internal diffusion of the solvent through the filaments controlled the solvent removal of the extrudates. Different kinds of three-dimensional (3D) structures including a layer-by-layer tower, nine-layer scaffold, and freeform spiral were fabricated, and a processing map was given to show the proper ranges of process-related parameters (i.e., polymer content, applied pressure, nozzle diameter, and robot velocity) for the different geometries. The results of differential scanning calorimetry revealed that slow solvent evaporation could increase the ability of PLA to complete its crystallization process during the filament drying stage. The method developed here offers a new perspective for manufacturing complex structures from polymer solutions and provides guidelines to optimize the various parameters for 3D geometry fabrication.
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Affiliation(s)
- Shuang-Zhuang Guo
- Laboratory of Multiscale Mechanics, Mechanical Engineering Department Center for Applied Research on Polymers and composites (CREPEC), École Polytechnique de Montréal , C.P. 6079, succ. Centre-Ville, Montreal, QC H3C 3A7, Canada
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38
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Zheng G, Liu X, Wang X, Chen L, Xie H, Wang F, Zheng H, Yu W, Ma X. Improving stability and biocompatibility of alginate/chitosan microcapsule by fabricating bi-functional membrane. Macromol Biosci 2014; 14:655-66. [PMID: 24436207 DOI: 10.1002/mabi.201300474] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 12/02/2013] [Indexed: 01/22/2023]
Abstract
Cell encapsulation technology holds promise for the cell-based therapy. But poor mechanical strength and biocompatibility of microcapsule membrane are still obstacles for the clinical applications. A novel strategy is presented to prepare AC₁ C₂ A microcapsules with bi-functional membrane (that is, both desirable biocompatibility and membrane stability) by sequentially complexing chitosans with higher deacetylation degree (C₁) and lower deacetylation degree (C₂) on alginate (A) gel beads. Both in vitro and in vivo evaluation of AC₁C₂ A microcapsules demonstrate higher membrane stability and less cell adhesion, because the introduction of C₂ increases membrane strength and decreases surface roughness. Moreover, diffusion test of AC₁C₂ A microcapsules displays no inward permeation of IgG protein suggesting good immunoisolation function. The results demonstrate that AC₁C₂ A microcapsules with bi-functional membrane could be a promising candidate for microencapsulated cell implantation with cost effective usage of naturally biocompatible polysaccharides.
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Affiliation(s)
- Guoshuang Zheng
- Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China; University of the Chinese Academy of Sciences, Beijing, 100049, P. R. China
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39
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Therapeutic cell encapsulation: Ten steps towards clinical translation. J Control Release 2013; 170:1-14. [DOI: 10.1016/j.jconrel.2013.04.015] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 04/05/2013] [Accepted: 04/22/2013] [Indexed: 12/23/2022]
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