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Abbadessa A, Nuñez Bernal P, Buttitta G, Ronca A, D'Amora U, Zihlmann C, Stiefel N, Ambrosio L, Malda J, Levato R, Crecente-Campo J, Alonso MJ. Biofunctionalization of 3D printed collagen with bevacizumab-loaded microparticles targeting pathological angiogenesis. J Control Release 2023; 360:747-758. [PMID: 37451546 DOI: 10.1016/j.jconrel.2023.07.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 06/05/2023] [Accepted: 07/08/2023] [Indexed: 07/18/2023]
Abstract
Pathological angiogenesis is a crucial attribute of several chronic diseases such as cancer, age-related macular degeneration, and osteoarthritis (OA). In the case of OA, pathological angiogenesis mediated by the vascular endothelial growth factor (VEGF), among other factors, contributes to cartilage degeneration and to implants rejection. In line with this, the use of the anti-VEGF bevacizumab (BVZ) has been shown to prevent OA progression and support cartilage regeneration. The aim of this work was to functionalize a medical grade collagen with poly (lactic-co-glycolic acid) (PLGA) microparticles containing BVZ via three-dimensional (3D) printing to target pathological angiogenesis. First, the effect of several formulation parameters on the encapsulation and release of BVZ from PLGA microparticles was studied. Then, the anti-angiogenic activity of released BVZ was tested in a 3D cell model. The 3D printability of the microparticle-loaded collagen ink was tested by evaluating the shape fidelity of 3D printed structures. Results showed that the release and the encapsulation efficiency of BVZ could be tuned as a function of several formulation parameters. In addition, the released BVZ was observed to reduce vascularization by human umbilical vein endothelial cells. Finally, the collagen ink with embedded BVZ microparticles was successfully printed, leading to shape-stable meniscus-, nose- and auricle-like structures. Taken altogether, we defined the conditions for the successful combination of BVZ-loaded microparticles with the 3D printing of a medical grade collagen to target pathological angiogenesis.
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Affiliation(s)
- Anna Abbadessa
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), IDIS Research Institute, Universidade de Santiago de Compostela, Santiago de Compostela, Spain; Department of Pharmacology, Pharmacy and Pharmaceutical Technology, School of Pharmacy, Campus Vida, Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
| | - Paulina Nuñez Bernal
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, the Netherlands.
| | - Giorgio Buttitta
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), IDIS Research Institute, Universidade de Santiago de Compostela, Santiago de Compostela, Spain; Department of Pharmacology, Pharmacy and Pharmaceutical Technology, School of Pharmacy, Campus Vida, Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
| | - Alfredo Ronca
- Institute of Polymers, Composites and Biomaterials, National Research Council (IPCB-CNR), Naples, Italy.
| | - Ugo D'Amora
- Institute of Polymers, Composites and Biomaterials, National Research Council (IPCB-CNR), Naples, Italy.
| | | | | | - Luigi Ambrosio
- Institute of Polymers, Composites and Biomaterials, National Research Council (IPCB-CNR), Naples, Italy.
| | - Jos Malda
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, the Netherlands; Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands.
| | - Riccardo Levato
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, the Netherlands; Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands.
| | - José Crecente-Campo
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), IDIS Research Institute, Universidade de Santiago de Compostela, Santiago de Compostela, Spain; Department of Pharmacology, Pharmacy and Pharmaceutical Technology, School of Pharmacy, Campus Vida, Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
| | - María José Alonso
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), IDIS Research Institute, Universidade de Santiago de Compostela, Santiago de Compostela, Spain; Department of Pharmacology, Pharmacy and Pharmaceutical Technology, School of Pharmacy, Campus Vida, Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
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2
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Jose G, Shalumon K, Chen JP. Natural Polymers Based Hydrogels for Cell Culture Applications. Curr Med Chem 2020; 27:2734-2776. [DOI: 10.2174/0929867326666190903113004] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 08/15/2019] [Accepted: 08/20/2019] [Indexed: 02/06/2023]
Abstract
It is well known that the extracellular matrix (ECM) plays a vital role in the growth, survival
and differentiation of cells. Though two-dimensional (2D) materials are generally used as substrates for
the standard in vitro experiments, their mechanical, structural, and compositional characteristics can
alter cell functions drastically. Many scientists reported that cells behave more natively when cultured
in three-dimensional (3D) environments than on 2D substrates, due to the more in vivo-like 3D cell
culture environment that can better mimic the biochemical and mechanical properties of the ECM. In
this regard, water-swollen network polymer-based materials called hydrogels are highly attractive for
developing 3D ECM analogs due to their biocompatibility and hydrophilicity. Since hydrogels can be
tuned and altered systematically, these materials can function actively in a defined culture medium to
support long-term self-renewal of various cells. The physico-chemical and biological properties of the
materials used for developing hydrogel should be tunable in accordance with culture needs. Various
types of hydrogels derived either from natural or synthetic origins are currently being used for cell culture
applications. In this review, we present an overview of various hydrogels based on natural polymers
that can be used for cell culture, irrespective of types of applications. We also explain how each
hydrogel is made, its source, pros and cons in biological applications with a special focus on regenerative
engineering.
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Affiliation(s)
- Gils Jose
- Department of Chemical and Materials Engineering, Chang Gung University, Kwei-San, Taoyuan 33302, Taiwan
| | - K.T. Shalumon
- Department of Chemical and Materials Engineering, Chang Gung University, Kwei-San, Taoyuan 33302, Taiwan
| | - Jyh-Ping Chen
- Department of Chemical and Materials Engineering, Chang Gung University, Kwei-San, Taoyuan 33302, Taiwan
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Fang A, Hao Z, Wang L, Li D, He J, Gao L, Mao X, Paz R. In vitro model of the glial scar. Int J Bioprint 2019; 5:235. [PMID: 32596540 PMCID: PMC7294684 DOI: 10.18063/ijb.v5i2.235] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 07/18/2019] [Indexed: 02/04/2023] Open
Abstract
The trauma of central nervous system (CNS) can lead to glial scar, and it can limit the regeneration of neurons at the injured area, which is considered to be a major factor affecting the functional recovery of patients with CNS injury. At present, the study of the glial scar model in vitro is still limited to two-dimensional culture, and the state of the scar in vivo cannot be well mimicked. Therefore, we use a collagen gel and astrocytes to construct a three-dimensional (3D) model in vitro to mimic natural glial scar tissue. The effects of concentration changes of astrocytes on cell morphology, proliferation, and tissue performance were investigated. After 8 days of culture in vitro, the results showed that the tissue model contracted, with a measured shrinkage rate of 4.5%, and the compressive elastic modulus increased to nearly 4 times. Moreover, the astrocytes of the 3D tissue model have the ability of proliferation, hyperplasia, and formation of scar clusters. It indicates that the model we constructed has the characteristics of glial scar tissue to some extent and can provide an in vitro model for the research of glial scar and brain diseases.
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Affiliation(s)
- Ao Fang
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, ShaanXi 710054, China.,State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, ShaanXi 710054, China
| | - Zhiyan Hao
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, ShaanXi 710054, China.,State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, ShaanXi 710054, China
| | - Ling Wang
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, ShaanXi 710054, China.,State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, ShaanXi 710054, China
| | - Dichen Li
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, ShaanXi 710054, China.,State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, ShaanXi 710054, China
| | - Jiankang He
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, ShaanXi 710054, China.,State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, ShaanXi 710054, China
| | - Lin Gao
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, ShaanXi 710054, China.,State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, ShaanXi 710054, China
| | - Xinggang Mao
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province 710032, China
| | - Rubén Paz
- Departamento de Ingeniería Mecánica, Universidad de Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain
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4
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Fang A, Li D, Hao Z, Wang L, Pan B, Gao L, Qu X, He J. Effects of astrocyte on neuronal outgrowth in a layered 3D structure. Biomed Eng Online 2019; 18:74. [PMID: 31215491 PMCID: PMC6582480 DOI: 10.1186/s12938-019-0694-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 06/10/2019] [Indexed: 12/15/2022] Open
Abstract
Background Human brain models and pharmacological models of brain diseases are in high demand for drug screening because animal models have been found to be less than ideal for fully representing the human brain and are likely to fail during drug screening and testing; therefore, the construction of brain-like tissues is necessary. Due to the complexity of cortical tissue, the in vitro construction of brain-like tissue models has been restricted to mostly two-dimensional (2D) models and, on a limited scale, three-dimensional (3D) models. Methods In this study, 3D tissue blocks encapsulating neurons and astrocytes were constructed and cultured in vitro to mimic the cortex of the brain and to investigate the effects of astrocytes on the growth of neurons in a 3D culture. Results The results indicated that such methodology can provide a 3D culture environment suitable for neurons and astrocytes to live and function. When both cells were evenly mixed and cultured in a 3D manner, the astrocytes, which showed better outgrowth and a higher proliferation rate, benefited more than the neurons. On the other hand, the neurons benefited, showing longer axons and a denser network of dendrites, when they were accompanied by astrocytes at a certain distance. Conclusion In conclusion, astrocytes stimulated the outgrowth of neurons in a 3D culture environment in vitro. Regardless, the spatial relationship between both types of cells should be controlled. Thus, culturing cells in a 3D manner is necessary to investigate the correlations between them. This study provides a foundation for biofabricating 3D neurons’ cultures to allow for a deeper insight into the relationship between astrocytes or other glial cells and neurons in a 3D culture that is similar to the natural environment of the brain.
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Affiliation(s)
- Ao Fang
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, Shaanxi, China.,State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Dichen Li
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, Shaanxi, China.,State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Zhiyan Hao
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, Shaanxi, China.,State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Ling Wang
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, Shaanxi, China. .,State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, China.
| | - Binglei Pan
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, Shaanxi, China.,State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Lin Gao
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, Shaanxi, China.,State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Xiaoli Qu
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, Shaanxi, China.,State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Jiankang He
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, Shaanxi, China.,State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
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5
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Ma L, Huang J, Zhu X, Zhu B, Wang L, Zhao W, Qiu L, Song B, Zhao C, Yan F. In vitro and in vivo anticoagulant activity of heparin-like biomacromolecules and the mechanism analysis for heparin-mimicking activity. Int J Biol Macromol 2019; 122:784-792. [PMID: 30399381 DOI: 10.1016/j.ijbiomac.2018.11.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 11/01/2018] [Accepted: 11/02/2018] [Indexed: 02/05/2023]
Abstract
Heparin-like biomacromolecules (HepLBm), exhibiting similar chemical structure and biological properties to heparin, can be obtained by modifying either synthetic biopolymers or natural biomacromolecules with physical or chemical methods. In this work, a low-cost and biocompatible sodium alginate was chosen as a model biomacromolecule to design anticoagulant HepLBm with a similar sulfation degree to heparin. FTIR, 1H NMR, and element analysis data were used to confirm the chemical structure of HepLBm. Hemolysis tests, clotting time, complement activation, and contact activation tests were carried out to determine the in vitro anticoagulant activity of HepLBm. In addition, systematic studies of blood cell count, coagulation function, and histopathology were performed to demonstrate the in vivo anticoagulant activity and toxicity of HepLBm with SD rat experiments. Furthermore, a series of linear molecules containing carboxyl groups, sulfonic groups, and hydroxyl groups were selected and their clotting time was tested to provide a mechanism analysis for the excellent anticoagulant activity of HepLBm. With the excellent in vitro/in vivo anticoagulant activity, good biocompatibility, and low cost, the HepLBm synthesized in this work would have great potential for substitution of heparin in many application fields, such as the surface modification of biomedical devices, extracorporeal anticoagulants, and other clinical fields.
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Affiliation(s)
- Lang Ma
- Laboratory of Ultrasound Imaging Drug, Department of Ultrasound, West China School of Medicine/West China Hospital, Sichuan University, Chengdu 610041, China; College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Jianbo Huang
- Laboratory of Ultrasound Imaging Drug, Department of Ultrasound, West China School of Medicine/West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xiaoxia Zhu
- Laboratory of Ultrasound Imaging Drug, Department of Ultrasound, West China School of Medicine/West China Hospital, Sichuan University, Chengdu 610041, China
| | - Bihui Zhu
- Laboratory of Ultrasound Imaging Drug, Department of Ultrasound, West China School of Medicine/West China Hospital, Sichuan University, Chengdu 610041, China
| | - Liyun Wang
- Laboratory of Ultrasound Imaging Drug, Department of Ultrasound, West China School of Medicine/West China Hospital, Sichuan University, Chengdu 610041, China
| | - Weifeng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Li Qiu
- Laboratory of Ultrasound Imaging Drug, Department of Ultrasound, West China School of Medicine/West China Hospital, Sichuan University, Chengdu 610041, China
| | - Bin Song
- Department of Radiology, West China School of Medicine/West China Hospital, Sichuan University, Chengdu 610041, China
| | - Changsheng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Feng Yan
- Laboratory of Ultrasound Imaging Drug, Department of Ultrasound, West China School of Medicine/West China Hospital, Sichuan University, Chengdu 610041, China.
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6
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Bray C, Gurnani P, Mansfield EDH, Peltier R, Perrier S. Sulfonated Copolymers as Heparin-Mimicking Stabilizer of Fibroblast Growth Factor: Size, Architecture, and Monomer Distribution Effects. Biomacromolecules 2019; 20:285-293. [PMID: 30543415 DOI: 10.1021/acs.biomac.8b01451] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Fibroblast growth factors (FGF) are involved in a wide range of biological processes such as cell proliferation and differentiation. In living organisms, the binding of FGF to its receptors are mediated through electrostatic interactions between FGF and naturally occurring heparin. Despite its prevalent use in medicine, heparin carries notable limitations; namely, its extraction from natural sources (expensive, low yield and extensive purification), viral contamination, and batch-to-batch heterogeneity. In this work a range of synthetic homopolymers and copolymers of sodium 2-acrylamido-2-methylpropanesulfonate were evaluated as potential FGF stabilizers. This was studied by measuring the proliferation of BaF3-FR1c cells, as a model assay, and the results will be compared with the natural stabilization and activation of FGF by heparin. This study explores the structure-activity relationship of these polysulfonated polymers with a focus on the effect of molecular weight, comonomer type, charge dispersion, and polymer architecture on protein stabilization.
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Affiliation(s)
- Caroline Bray
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry CV4 7AL , United Kingdom
| | - Pratik Gurnani
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry CV4 7AL , United Kingdom
| | - Edward D H Mansfield
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry CV4 7AL , United Kingdom
| | - Raoul Peltier
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry CV4 7AL , United Kingdom
| | - Sébastien Perrier
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry CV4 7AL , United Kingdom
- Warwick Medical School , University of Warwick , Gibbet Hill Road , Coventry CV4 7AL , United Kingdom
- Faculty of Pharmacy and Pharmaceutical Sciences , Monash University , 381 Royal Parade , Parkville , Victoria 3052 , Australia
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Ma L, Zhou M, He C, Li S, Fan X, Nie C, Luo H, Qiu L, Cheng C. Graphene-based advanced nanoplatforms and biocomposites from environmentally friendly and biomimetic approaches. GREEN CHEMISTRY 2019. [DOI: 10.1039/c9gc02266j] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Environmentally friendly and biomimetic approaches to fabricate graphene-based advanced nanoplatforms and biocomposites for biomedical applications are summarized in this review.
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Affiliation(s)
- Lang Ma
- Department of Ultrasound
- West China Hospital
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
| | - Mi Zhou
- College of Biomass Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Chao He
- Department of Ultrasound
- West China Hospital
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
| | - Shuang Li
- Functional Materials
- Department of Chemistry
- Technische Universität Berlin
- 10623 Berlin
- Germany
| | - Xin Fan
- Department of Ultrasound
- West China Hospital
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
| | - Chuanxiong Nie
- Department of Chemistry and Biochemistry
- Freie Universitat Berlin
- Berlin 14195
- Germany
| | - Hongrong Luo
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610064
- China
| | - Li Qiu
- Department of Ultrasound
- West China Hospital
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
| | - Chong Cheng
- Department of Ultrasound
- West China Hospital
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
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8
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Jiang S, Wu J, Hang Y, Liu Q, Li D, Chen H, Brash JL. Sustained release of a synthetic structurally-tailored glycopolymer modulates endothelial cells for enhanced endothelialization of materials. J Mater Chem B 2019. [DOI: 10.1039/c9tb00714h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
GAG-mimicking polymers were prepared by a novel method allowing close control of structure and can be used as potent synthetic bioactive modifiers to promote endothelialization of materials.
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Affiliation(s)
- Shuaibing Jiang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Jingxian Wu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Yingjie Hang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Qi Liu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Dan Li
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Hong Chen
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - John L. Brash
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
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Kamon Y, Takeuchi T. Molecularly Imprinted Nanocavities Capable of Ligand-Binding Domain and Size/Shape Recognition for Selective Discrimination of Vascular Endothelial Growth Factor Isoforms. ACS Sens 2018; 3:580-586. [PMID: 29441779 DOI: 10.1021/acssensors.7b00622] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Vascular endothelial growth factor 165 (VEGF165) is known to be predominantly expressed in the first stage of vascularization; therefore, the detection of VEGF165 is important in the stage diagnosis of cancers. Molecularly imprinted nanocavities, capable of the selective discrimination of VEGF165 from other VEGF isoforms, were prepared by surface-initiated atom transfer radical polymerization. VEGF165 was immobilized on a gold-coated glass substrate by anchored heparin moieties, where the immobilized heparin was able to capture VEGF165 by binding with the heparin-binding domain (HBD) on VEGF165. Molecular imprinting was conducted on the immobilized VEGF165 by using methacrylic acid (MAA) as a functional monomer to interact with basic amino acids outside of the HBD of VEGF165 by electrostatic interaction. After the removal of VEGF165 from the obtained polymer thin layer (ca. 7 nm), VEGF165-imprinted nanocavities remained, in which the heparin moiety and MAA residues were located in suitable positions for VEGF165 recognition. The molecularly imprinted polymer (MIP) thin layer showed a binding affinity for VEGF165 (dissociation constant: 3.4 nM) that was ten times higher than that of the substrate before polymerization (heparin-immobilized substrate). A much lower binding affinity for VEGF121, which contains no heparin-binding domain, was observed. Moreover, the MIP thin layer distinguished VEGF165 from VEGF189, which possesses a larger molecular size than VEGF165, an amino acid sequence homology of 87%, and contains HBDs, whereas the heparin-immobilized substrate showed almost no selectivity. These results suggested that the heparin moiety within the nanocavity provided HBD selectivity and the polymer matrix composed of the molecularly imprinted nanocavity provided size/shape selectivity, which resulted in the highly selective discrimination of VEGF isoforms.
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Affiliation(s)
- Yuri Kamon
- Graduate School of Engineering, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Toshifumi Takeuchi
- Graduate School of Engineering, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
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10
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Osteochondral Angiogenesis and Promoted Vascularization: New Therapeutic Target. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1059:315-330. [DOI: 10.1007/978-3-319-76735-2_14] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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11
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Self-Setting Calcium Orthophosphate (CaPO4) Formulations. SPRINGER SERIES IN BIOMATERIALS SCIENCE AND ENGINEERING 2018. [DOI: 10.1007/978-981-10-5975-9_2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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12
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Martín-Saldaña S, Palao-Suay R, Aguilar MR, García-Fernández L, Arévalo H, Trinidad A, Ramírez-Camacho R, San Román J. pH-sensitive polymeric nanoparticles with antioxidant and anti-inflammatory properties against cisplatin-induced hearing loss. J Control Release 2017; 270:53-64. [PMID: 29197586 DOI: 10.1016/j.jconrel.2017.11.032] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 11/17/2017] [Accepted: 11/20/2017] [Indexed: 11/28/2022]
Abstract
Polymeric nanoparticles (NPs) based on smart synthetic amphiphilic copolymers are used to transport and controlled release dexamethasone in the inner ear to protect against the ototoxic effect of cisplatin. The NPs were based on a mixture of two pseudo-block polymer drugs obtained by free radical polymerization: poly(VI-co-HEI) and poly(VP-co-MVE) or poly(VP-co-MTOS), being VI 1-vinylimidazole, VP N-vinylpyrrolidone, and HEI, MVE and MTOS the methacrylic derivatives of ibuprofen, α-tocopherol and α-tocopheryl succinate, respectively. The NPs were obtained by nanoprecipitation with appropriate hydrodynamic properties, and isoelectric points that matched the pH of inflamed tissue. The NPs were tested both in vitro (using HEI-OC1 cells) and in vivo (using a murine model) with good results. Although the concentration of dexamethasone administered in the NPs is around two orders of magnitude lower that the conventional treatment for intratympanic administration, the NPs protected from the cytotoxic effect of cisplatin when the combination of the appropriate properties in terms of size, zeta potential, encapsulation efficiency and isoelectric point were achieved. To the best of our knowledge this is the first time that pH sensitive NPs are used to protect from cisplatin-induced hearing loss by intratympanic administration.
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Affiliation(s)
- Sergio Martín-Saldaña
- Grupo de Biomateriales, Departamento de Nanomateriales Poliméricos y Biomateriales, Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, C/Juan de la Cierva, 3, 28006 Madrid, Spain; Ear Research Group, Hospital UniversitarioPuerta de Hierro Majadahonda, Health Research Institute Puerta de Hierro, Madrid, Spain
| | - Raquel Palao-Suay
- Grupo de Biomateriales, Departamento de Nanomateriales Poliméricos y Biomateriales, Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, C/Juan de la Cierva, 3, 28006 Madrid, Spain; Networking Biomedical Research Centre in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Spain
| | - María Rosa Aguilar
- Grupo de Biomateriales, Departamento de Nanomateriales Poliméricos y Biomateriales, Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, C/Juan de la Cierva, 3, 28006 Madrid, Spain; Networking Biomedical Research Centre in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Spain.
| | - Luis García-Fernández
- Grupo de Biomateriales, Departamento de Nanomateriales Poliméricos y Biomateriales, Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, C/Juan de la Cierva, 3, 28006 Madrid, Spain; Networking Biomedical Research Centre in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Spain
| | - Humberto Arévalo
- Grupo de Biomateriales, Departamento de Nanomateriales Poliméricos y Biomateriales, Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, C/Juan de la Cierva, 3, 28006 Madrid, Spain
| | - Almudena Trinidad
- Ear Research Group, Hospital UniversitarioPuerta de Hierro Majadahonda, Health Research Institute Puerta de Hierro, Madrid, Spain
| | - Rafael Ramírez-Camacho
- Ear Research Group, Hospital UniversitarioPuerta de Hierro Majadahonda, Health Research Institute Puerta de Hierro, Madrid, Spain
| | - Julio San Román
- Grupo de Biomateriales, Departamento de Nanomateriales Poliméricos y Biomateriales, Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, C/Juan de la Cierva, 3, 28006 Madrid, Spain; Networking Biomedical Research Centre in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Spain
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Role of heparin and non heparin binding serpins in coagulation and angiogenesis: A complex interplay. Arch Biochem Biophys 2016; 604:128-42. [PMID: 27372899 DOI: 10.1016/j.abb.2016.06.018] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 05/23/2016] [Accepted: 06/27/2016] [Indexed: 12/21/2022]
Abstract
Pro-coagulant, anti-coagulant and fibrinolytic pathways are responsible for maintaining hemostatic balance under physiological conditions. Any deviation from these pathways would result in hypercoagulability leading to life threatening diseases like myocardial infarction, stroke, portal vein thrombosis, deep vein thrombosis (DVT) and pulmonary embolism (PE). Angiogenesis is the process of sprouting of new blood vessels from pre-existing ones and plays a critical role in vascular repair, diabetic retinopathy, chronic inflammation and cancer progression. Serpins; a superfamily of protease inhibitors, play a key role in regulating both angiogenesis and coagulation. They are characterized by the presence of highly conserved secondary structure comprising of 3 β-sheets and 7-9 α-helices. Inhibitory role of serpins is modulated by binding to cofactors, specially heparin and heparan sulfate proteoglycans (HSPGs) present on cell surfaces and extracellular matrix. Heparin and HSPGs are the mainstay of anti-coagulant therapy and also have therapeutic potential as anti-angiogenic inhibitors. Many of the heparin binding serpins that regulate coagulation cascade are also potent inhibitors of angiogenesis. Understanding the molecular mechanism of the switch between their specific anti-coagulant and anti-angiogenic role during inflammation, stress and regular hemostasis is important. In this review, we have tried to integrate the role of different serpins, their interaction with cofactors and their interplay in regulating coagulation and angiogenesis.
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Palao-Suay R, Gómez-Mascaraque L, Aguilar M, Vázquez-Lasa B, Román JS. Self-assembling polymer systems for advanced treatment of cancer and inflammation. Prog Polym Sci 2016. [DOI: 10.1016/j.progpolymsci.2015.07.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Palao-Suay R, Aguilar MR, Parra-Ruiz FJ, Maji S, Hoogenboom R, Rohner N, Thomas SN, Román JS. α-Tocopheryl succinate-based amphiphilic block copolymers obtained by RAFT and their nanoparticles for the treatment of cancer. Polym Chem 2016; 7:838-850. [PMID: 27004068 PMCID: PMC4797642 DOI: 10.1039/c5py01811k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
α-Tocopheryl succinate (α-TOS) is a well-known mitochondrially targeted anticancer compound. However, the major factor limiting the use of α-TOS is its low solubility in physiological media. To overcome this problem, the aim of this work is the preparation of new polymeric and active α-TOS-based nanovehicle with a precise control over its macromolecular architecture. Reversible addition-fragmentation chain transfer polymerization (RAFT) is used to synthesize an α-TOS amphiphilic block copolymer with highly homogeneous molecular weight and relatively narrow dispersity. Macro-chain transfer agents (macro-CTA) based on poly(ethylene glycol) (PEG) of different molecular weights (MW, ranging from 4.6 to 20 kDa) are used to obtain block copolymers with different hydrophilic/hydrophobic ratios with PEG being the hydrophilic block and a methacrylic derivative of α-tocopheryl succinate (MTOS) being the monomer that formed the hydrophobic block. PEG-b-poly(MTOS) form spherical nanoparticles (NPs) by self-organized precipitation (SORP) or solvent exchange in aqueous media enabling to encapsulate and deliver hydrophobic molecules in their core. The resulting NPs are rapidly endocytosed by cancer cells. The biological activity of the synthesized NPs are found to depend on the MW of PEG, with NP comprised of the higher MW copolymer resulting in the lower bioactivity due to PEG shielding inhibiting cellular uptake by endocytosis. Moreover, the biological activity also depends on the MTOS content, as the biological activity increases as a function of MTOS concentration.
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Affiliation(s)
- Raquel Palao-Suay
- Group of Biomaterials, Department of Polymeric Nanomaterials and Biomaterials, Institute of Polymer Science and Technology, CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
- Networking Biomedical Research Centre in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Spain
| | - María Rosa Aguilar
- Group of Biomaterials, Department of Polymeric Nanomaterials and Biomaterials, Institute of Polymer Science and Technology, CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
- Networking Biomedical Research Centre in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Spain
| | - Francisco J. Parra-Ruiz
- Group of Biomaterials, Department of Polymeric Nanomaterials and Biomaterials, Institute of Polymer Science and Technology, CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
| | - Samarendra Maji
- Supramolecular Chemistry Group. Department of Organic and Macromolecular Chemistry. Ghent University. Krijgslaan 281-S4, 9000 Ghent, Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry Group. Department of Organic and Macromolecular Chemistry. Ghent University. Krijgslaan 281-S4, 9000 Ghent, Belgium
| | - N.A. Rohner
- George W. Woodruff School of Mechanical Engineering and Parker H. Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Dr NW, Atlanta, 30332 Georgia, USA
| | - Susan N. Thomas
- George W. Woodruff School of Mechanical Engineering and Parker H. Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Dr NW, Atlanta, 30332 Georgia, USA
| | - Julio San Román
- Group of Biomaterials, Department of Polymeric Nanomaterials and Biomaterials, Institute of Polymer Science and Technology, CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
- Networking Biomedical Research Centre in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Spain
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Li B, Yan W, Zhang C, Zhang Y, Liang M, Chu F, Gong Y, Xu B, Wang P, Lei H. New synthesis method for sultone derivatives: synthesis, crystal structure and biological evaluation of S-CA. Molecules 2015; 20:4307-18. [PMID: 25808146 PMCID: PMC6272555 DOI: 10.3390/molecules20034307] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Revised: 02/26/2015] [Accepted: 02/27/2015] [Indexed: 11/28/2022] Open
Abstract
There has been no remarkable progress in the synthesis of sultones in recent years. To facilitate more detailed studies of this functional group, we found a new method to synthesize the sulfonic acid lactone derivatives and finish its ring-closing reaction. A new sultone derivative, (E)-ethyl 4-oxo-6-styryl-3,4-dihydro-1,2-oxathiine-5-carboxylate 2,2-dioxide (S-CA), was synthesized and structurally identified by 1H-NMR, 13C-NMR, HMQC and X-ray single crystal diffraction analysis. The new rapid synthesis extended the method of ring-closing reaction of sulfonic acid lactone derivatives. The angiogenesis activities of S-CA were evaluated by the chick chorioallantoic membrane (CAM) model. It could selectively suppress small angiogenesis in CAM, without influencing either middle and large angiogenesis. In addition, anticancer efficacy of S-CA was evaluated in vivo using a murine sarcoma S180 model. Reduction of the tumor weight and tumor HE staining regions demonstrated that S-CA (10 mg/kg, intraperitoneal injection) had potent inhibition effects and a 44.71% inhibitory rate in S180 mice. Moreover, an acute toxicity test showed that the LD50 value of S-CA via intraperitoneal injection was 25.624 mg/kg.
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Affiliation(s)
- Bi Li
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Wenqiang Yan
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Chenze Zhang
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Yuzhong Zhang
- School of Basic Medicine, Beijing University of Chinese Medicine, Beijing 100029, China.
| | - Miao Liang
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Fuhao Chu
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Yan Gong
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Bing Xu
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Penglong Wang
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Haimin Lei
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
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Liang Y, Kiick KL. Heparin-functionalized polymeric biomaterials in tissue engineering and drug delivery applications. Acta Biomater 2014; 10:1588-600. [PMID: 23911941 PMCID: PMC3937301 DOI: 10.1016/j.actbio.2013.07.031] [Citation(s) in RCA: 231] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 07/15/2013] [Accepted: 07/24/2013] [Indexed: 11/26/2022]
Abstract
Heparin plays an important role in many biological processes via its interaction with various proteins, and hydrogels and nanoparticles comprising heparin exhibit attractive properties, such as anticoagulant activity, growth factor binding, and antiangiogenic and apoptotic effects, making them great candidates for emerging applications. Accordingly, this review summarizes recent efforts in the preparation of heparin-based hydrogels and formation of nanoparticles, as well as the characterization of their properties and applications. The challenges and future perspectives for heparin-based materials are also discussed. Prospects are promising for heparin-containing polymeric biomaterials in diverse applications ranging from cell carriers for promoting cell differentiation to nanoparticle therapeutics for cancer treatment.
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Affiliation(s)
- Yingkai Liang
- Department of Materials Science and Engineering, 201 DuPont Hall, University of Delaware, Newark, DE 19716, USA
| | - Kristi L Kiick
- Department of Materials Science and Engineering, 201 DuPont Hall, University of Delaware, Newark, DE 19716, USA; Biomedical Engineering, University of Delaware, Newark, DE 19716, USA; Delaware Biotechnology Institute, 15 Innovation Way, University of Delaware, Newark, DE 19711, USA.
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Dorozhkin SV. Self-setting calcium orthophosphate formulations. J Funct Biomater 2013; 4:209-311. [PMID: 24956191 PMCID: PMC4030932 DOI: 10.3390/jfb4040209] [Citation(s) in RCA: 125] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 10/18/2013] [Accepted: 10/21/2013] [Indexed: 01/08/2023] Open
Abstract
In early 1980s, researchers discovered self-setting calcium orthophosphate cements, which are bioactive and biodegradable grafting bioceramics in the form of a powder and a liquid. After mixing, both phases form pastes, which set and harden forming either a non-stoichiometric calcium deficient hydroxyapatite or brushite. Since both of them are remarkably biocompartible, bioresorbable and osteoconductive, self-setting calcium orthophosphate formulations appear to be promising bioceramics for bone grafting. Furthermore, such formulations possess excellent molding capabilities, easy manipulation and nearly perfect adaptation to the complex shapes of bone defects, followed by gradual bioresorption and new bone formation. In addition, reinforced formulations have been introduced, which might be described as calcium orthophosphate concretes. The discovery of self-setting properties opened up a new era in the medical application of calcium orthophosphates and many commercial trademarks have been introduced as a result. Currently such formulations are widely used as synthetic bone grafts, with several advantages, such as pourability and injectability. Moreover, their low-temperature setting reactions and intrinsic porosity allow loading by drugs, biomolecules and even cells for tissue engineering purposes. In this review, an insight into the self-setting calcium orthophosphate formulations, as excellent bioceramics suitable for both dental and bone grafting applications, has been provided.
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Tardajos MG, García-Fernández L, Reinecke H, Aguilar MR, Gallardo A, Román JS. Microstructure and biological activity of sulfonated N-vinylpyrrolidone copolymers. J BIOACT COMPAT POL 2012. [DOI: 10.1177/0883911512457761] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This article deals with the preparation, characterization, and in vitro evaluation of new copolymers based on functionalized N-vinylpyrrolidone bearing pendant sulfonic acid groups statistically or alternately distributed in the macromolecular chains. Statistical copolymers were obtained by free radical polymerization of N-vinylpyrrolidone and sulfonated N-vinylpyrrolidone ( r VP = 1.61; r VPSulf = 0.90) in water, and alternating copolymers were synthesized by free radical polymerization of N-vinylpyrrolidone or sulfonated N-vinylpyrrolidone with methyl maleate in N,N-dimethylformamide followed by hydrolysis of the resulting copolymers. The influence of these new materials on acidic fibroblast growth factor–mediated mitogenesis of fibroblasts demonstrated that sequence distribution (copolymer microstructure) plays a key role in the biological performance of these polymers. Alternating copolymers did not present biological activity, whereas statistical copolymers inhibited acidic fibroblast growth factor activity in a sulfonated N-vinylpyrrolidone dose-dependent manner.
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Affiliation(s)
- Myriam G Tardajos
- Polymer Functionalization Group, Polymer Physics, Elastomers and Energy Department, Polymer Science and Technology Institute (ICTP-CSIC), Madrid, Spain
| | - Luis García-Fernández
- Biomaterials Group, Polymeric Nanomaterials and Biomaterials Department, Polymer Science and Technology Institute (ICTP-CSIC), Madrid, Spain
- Networking Biomedical Research Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza, Spain
| | - Helmut Reinecke
- Polymer Functionalization Group, Polymer Physics, Elastomers and Energy Department, Polymer Science and Technology Institute (ICTP-CSIC), Madrid, Spain
| | - María R Aguilar
- Biomaterials Group, Polymeric Nanomaterials and Biomaterials Department, Polymer Science and Technology Institute (ICTP-CSIC), Madrid, Spain
- Networking Biomedical Research Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza, Spain
| | - Alberto Gallardo
- Polymer Functionalization Group, Polymer Physics, Elastomers and Energy Department, Polymer Science and Technology Institute (ICTP-CSIC), Madrid, Spain
| | - Julio S Román
- Biomaterials Group, Polymeric Nanomaterials and Biomaterials Department, Polymer Science and Technology Institute (ICTP-CSIC), Madrid, Spain
- Networking Biomedical Research Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza, Spain
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Tardajos MG, Nash M, Rochev Y, Reinecke H, Elvira C, Gallardo A. Homologous Copolymerization Route to Functional and Biocompatible Polyvinylpyrrolidone. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201100564] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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García-Fernández L, Aguilar MR, Ochoa-Callejero L, Abradelo C, Martínez A, San Román J. bFGF interaction and in vivo angiogenesis inhibition by self-assembling sulfonic acid-based copolymers. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:129-135. [PMID: 22116660 DOI: 10.1007/s10856-011-4497-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 11/09/2011] [Indexed: 05/31/2023]
Abstract
The antiangiogenic activity of different families of biocompatible and non-toxic polymer drugs based on 2-acrylamido-2-methylpropane sulfonic acid (AMPS) or polymethacrylic derivatives of 5-aminonaphthalen sulfonic acid (MANSA) is analyzed using directed in vivo angiogenesis assay and correlated with in vitro results. These active compounds were copolymerized with butylacrylate (BA) and N-vinylpyrrolidone in order to obtain two families of copolymers with different properties in aqueous media. The most hydrophobic copolymers poly(BA-co-MANSA) and poly(BA-co-AMPS) formed amphiphilic copolymers and presented micellar morphology in aqueous media. This supramolecular organization of the copolymers had a clear effect on bioactivity. Poly(BA-co-MANSA) copolymers showed the best antiangiogenic activity and very low toxicity at relatively low dose, with the possibility to be injected directly in the solid tumors alone or in combination with other therapeutic agents such as anti-VEGF drugs. The obtained results demonstrate that not only the chemical structure but also the supramolecular organization of the macromolecules plays a key role in the anti-angiogenic activity of these active polymers.
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Affiliation(s)
- L García-Fernández
- Department of Biomaterials, Institute of Polymer Science and Technology, Madrid, Spain.
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