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Zhao T, Terracciano R, Becker J, Monaco A, Yilmaz G, Becer CR. Hierarchy of Complex Glycomacromolecules: From Controlled Topologies to Biomedical Applications. Biomacromolecules 2022; 23:543-575. [PMID: 34982551 DOI: 10.1021/acs.biomac.1c01294] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Carbohydrates bearing a distinct complexity use a special code (Glycocode) to communicate with carbohydrate-binding proteins at a high precision to manipulate biological activities in complex biological environments. The level of complexity in carbohydrate-containing macromolecules controls the amount and specificity of information that can be stored in biomacromolecules. Therefore, a better understanding of the glycocode is crucial to open new areas of biomedical applications by controlling or manipulating the interaction between immune cells and pathogens in terms of trafficking and signaling, which would become a powerful tool to prevent infectious diseases. Even though a certain level of progress has been achieved over the past decade, synthetic glycomacromolecules are still lagging far behind naturally existing glycans in terms of complexity and precision because of insufficient and inefficient synthetic techniques. Currently, specific targeting at a cellular level using synthetic glycomacromolecules is still challenging. It is obvious that multidisciplinary collaborations are essential between different specialized disciplines to enhance the carbohydrate receptor-targeting paradigm for new biomedical applications. In this Perspective, recent developments in the synthesis of sophisticated glycomacromolecules are highlighted, and their biological and biomedical applications are also discussed in detail.
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Affiliation(s)
- Tieshuai Zhao
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Roberto Terracciano
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Jonas Becker
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Alessandra Monaco
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Gokhan Yilmaz
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - C Remzi Becer
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
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2
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Lai TH, Keperscha B, Qiu X, Voit B, Appelhans D. Long-Term Retarded Release for the Proteasome Inhibitor Bortezomib through Temperature-Sensitive Dendritic Glycopolymers as Drug Delivery System from Calcium Phosphate Bone Cement. Macromol Rapid Commun 2021; 42:e2100083. [PMID: 34048124 DOI: 10.1002/marc.202100083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 02/24/2021] [Indexed: 12/22/2022]
Abstract
For the local treatment of bone defects, highly adaptable macromolecular architectures are still required as drug delivery system (DDS) in solid bone substitute materials. Novel DDS fabricated by host-guest interactions between β-cyclodextrin-modified dendritic glycopolymers and adamantane-modified temperature-sensitive polymers for the proteasome inhibitor bortezomib (BZM) is presented. These DDS induce a short- and long-term (up to two weeks) retarded release of BZM from calcium phosphate bone cement (CPC) in comparison to a burst release of the drug alone. Different release parameters of BZM/DDS/CPC are evaluated in phosphate buffer at 37 °C to further improve the long-term retarded release of BZM. This is achieved by increasing the amount of drug (50-100 µg) and/or DDS (100-400 µg) versus CPC (1 g), by adapting the complexes better to the porous bone cement environment, and by applying molar ratios of excess BZM toward DDS with 1:10, 1:25, and 1:100. The temperature-sensitive polymer shells of BZM/DDS complexes in CPC, which allow drug loading at room temperature but are collapsed at body temperature, support the retarding long-term release of BZM from DDS/CPC. Thus, the concept of temperature-sensitive DDS for BZM/DDS complexes in CPC works and matches key points for a local therapy of osteolytic bone lesions.
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Affiliation(s)
- Thu Hang Lai
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, Dresden, 01069, Germany.,Department of Research and Development, ROTOP Pharmaka Ltd., Bautzner Landstraße 400, Dresden, 01328, Germany
| | - Bettina Keperscha
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, Dresden, 01069, Germany.,Organic Chemistry of Polymers, Technische Universität, Dresden, 01062, Germany
| | - Xianping Qiu
- Hubei Institute of Aerospace Chemotechnology, 1 Chunyuan Road, Fancheng District, Xiangyang, 441003, P. R. China
| | - Brigitte Voit
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, Dresden, 01069, Germany.,Organic Chemistry of Polymers, Technische Universität, Dresden, 01062, Germany
| | - Dietmar Appelhans
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, Dresden, 01069, Germany
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Zhou Q, Zhang Y, Fang L, Guan H, Wen X, Wu Y, Ba X, Bai L. One-Pot Free Radical Polymerization/Hydroxyl-Isocyanate Reaction: A Facile Strategy to Synthesize Hyperbranched Glycopoly(MaM/IM) with Tunable Structures. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qian Zhou
- College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Yuangong Zhang
- College of Basic Medicine, Hebei University, Baoding 071002, China
| | - Liping Fang
- College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Hao Guan
- College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Xin Wen
- College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Yonggang Wu
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Xinwu Ba
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Libin Bai
- College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
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Allahyari S, Valizadeh H, Zakeri-Milani P. Polymeric Nanoparticles and Their Novel Modifications for Targeted Delivery of Bortezomib. PHARMACEUTICAL SCIENCES 2020. [DOI: 10.34172/ps.2020.21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Bortezomib (BTZ) as a specific proteasome inhibitor is used to inhibit proliferation and migration of tumor cell in variety of cancers. Targeted delivery of this drug not only would minimize its unwanted side effects but also might improve its efficacy. This purpose could be gotten through different pathways but using efficient carriers may be the best one without using any additional ingredients/ materials. Some polymer based nanoparticles with specific functional groups have the ability to interact with boronic acid moiety in BTZ. This reaction might play an important role not only in cancer targeting therapy but also in loading and release properties of this drug. Novel modification such as making multifunctional or pH-sensitive nanocarriers, may also improve anticancer effect of BTZ. This review might have remarkable effect on researchers’ consideration about other possible interactions between BTZ and polymeric nanocarriers that might have great effect on its remedy pathway. It has the ability to brought bright ideas to their minds for novel amendments about other drugs and delivery systems.
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Affiliation(s)
- Saeideh Allahyari
- Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, Iran
- Student Research Committee, Tabriz University of Medical Science, Tabriz, Iran
| | - Hadi Valizadeh
- Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, Iran
| | - Parvin Zakeri-Milani
- Liver and Gastrointestinal Diseases Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
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Grab AL, Seckinger A, Horn P, Hose D, Cavalcanti-Adam EA. Hyaluronan hydrogels delivering BMP-6 for local targeting of malignant plasma cells and osteogenic differentiation of mesenchymal stromal cells. Acta Biomater 2019; 96:258-270. [PMID: 31302300 DOI: 10.1016/j.actbio.2019.07.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 07/08/2019] [Accepted: 07/10/2019] [Indexed: 12/15/2022]
Abstract
Multiple myeloma is a malignant disease characterized by accumulation of clonal plasma cells in the bone marrow. Uncoupling of bone formation and resorption by myeloma cells leads to osteolytic lesions. These are prone to fracture and represent a possible survival space for myeloma cells under treatment causing disease relapse. Here we report on a novel approach suitable for local treatment of multiple myeloma based on hyaluronic acid (HA) hydrogels mimicking the physical properties of the bone marrow. The HA hydrogels are complexed with heparin to achieve sustained presentation and controlled release of bone morphogenetic protein 6 (BMP-6). Others and we have shown that BMP-6 induces myeloma cell apoptosis and bone formation. Using quartz crystal microbalance and enzyme-linked immunosorbent assay, we measured an initial surface density of 400 ng BMP6/cm2, corresponding to two BMP-6 per heparin molecule, with 50% release within two weeks. HA-hydrogels presenting BMP-6 enhanced the phosphorylation of Smad 1/5 while reducing the activity of BMP-6 antagonist sclerostin. These materials induced osteogenic differentiation of mesenchymal stromal cells and decreased the viability of myeloma cell lines and primary myeloma cells. BMP-6 functionalized HA-hydrogels represent a promising material for local treatment of myeloma-induced bone disease and residual myeloma cells within lesions to minimize disease relapse or fractures. STATEMENT OF SIGNIFICANCE: Multiple myeloma is a hematological cancer characterized by the accumulation of clonal plasma cells in the bone marrow and local suppression of bone formation, resulting in osteolytic lesions and fractures. Despite recent advances in systemic treatment of multiple myeloma, it is rare to achieve a targeted suppression of myeloma cells and healing of bone lesions. Here we present hydrogels which mimic the physico-chemical properties of the bone marrow, consisting of hyaluronic acid with crosslinked heparin for the controlled presentation of bioactive BMP-6. The hydrogels decrease the viability of myeloma cell lines and primary myeloma cells and induces osteogenic differentiation of mesenchymal stromal cells. The presentation of BMP-6 in the hyaluronan hydrogels enhances the phosphorylation of Smad1/5 while reducing the activity of the BMP-6 antagonist sclerostin. As such, BMP-6 functionalized hyaluronan hydrogels represent a promising material for the localized eradication of myeloma cells.
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Affiliation(s)
- Anna Luise Grab
- Labor für Myelomforschung, Medizinische Klinik V, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany; Institute of Physical Chemistry, Department of Biophysical Chemistry, Heidelberg University, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany; Max Planck Institute for Medical Research, Department of Cellular Biophysics and Central Scientific Facility "Cellular Biotechnology", Jahnstr. 29, 69120 Heidelberg, Germany
| | - Anja Seckinger
- Labor für Myelomforschung, Medizinische Klinik V, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany
| | - Patrick Horn
- Medizinische Klinik V, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 350, 69120 Heidelberg, Germany
| | - Dirk Hose
- Labor für Myelomforschung, Medizinische Klinik V, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany.
| | - Elisabetta Ada Cavalcanti-Adam
- Institute of Physical Chemistry, Department of Biophysical Chemistry, Heidelberg University, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany; Max Planck Institute for Medical Research, Department of Cellular Biophysics and Central Scientific Facility "Cellular Biotechnology", Jahnstr. 29, 69120 Heidelberg, Germany.
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6
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Zeng Y, Hoque J, Varghese S. Biomaterial-assisted local and systemic delivery of bioactive agents for bone repair. Acta Biomater 2019; 93:152-168. [PMID: 30711659 PMCID: PMC6615988 DOI: 10.1016/j.actbio.2019.01.060] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 01/25/2019] [Accepted: 01/29/2019] [Indexed: 01/05/2023]
Abstract
Although bone tissues possess an intrinsic capacity for repair, there are cases where bone healing is either impaired or insufficient, such as fracture non-union, osteoporosis, osteomyelitis, and cancers. In these cases, treatments like surgical interventions are used, either alone or in combination with bioactive agents, to promote tissue repair and manage associated clinical complications. Improving the efficacy of bioactive agents often requires carriers, with biomaterials being a pivotal player. In this review, we discuss the role of biomaterials in realizing the local and systemic delivery of biomolecules to the bone tissue. The versatility of biomaterials enables design of carriers with the desired loading efficiency, release profile, and on-demand delivery. Besides local administration, systemic administration of drugs is necessary to combat diseases like osteoporosis, warranting bone-targeting drug delivery systems. Thus, chemical moieties with the affinity towards bone extracellular matrix components like apatite minerals have been widely utilized to create bone-targeting carriers with better biodistribution, which cannot be achieved by the drugs alone. Bone-targeting carriers combined with the desired drugs or bioactive agents have been extensively investigated to enhance bone healing while minimizing off-target effects. Herein, these advancements in the field have been systematically reviewed. STATEMENT OF SIGNIFICANCE: Drug delivery is imperative when surgical interventions are not sufficient to address various bone diseases/defects. Biomaterial-assisted delivery systems have been designed to provide drugs with the desired loading efficiency, sustained release, and on-demand delivery to enhance bone healing. By surveying recent advances in the field, this review outlines the design of biomaterials as carriers for the local and systemic delivery of bioactive agents to the bone tissue. Particularly, biomaterials that bear chemical moieties with affinity to bone are attractive, as they can present the desired bioactive agents to the bone tissue efficiently and thus enhance the drug efficacy for bone repair.
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Affiliation(s)
- Yuze Zeng
- Department of Orthopaedic Surgery, Duke University School of Medicine, Durham, NC 27710, USA; Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27710, USA
| | - Jiaul Hoque
- Department of Orthopaedic Surgery, Duke University School of Medicine, Durham, NC 27710, USA
| | - Shyni Varghese
- Department of Orthopaedic Surgery, Duke University School of Medicine, Durham, NC 27710, USA; Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27710, USA; Department of Biomedical Engineering, Duke University, Durham, NC 27710, USA.
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Schulze F, Keperscha B, Appelhans D, Rösen-Wolff A. Immunomodulatory Effects of Dendritic Poly(ethyleneimine) Glycoarchitectures on Human Multiple Myeloma Cell Lines, Mesenchymal Stromal Cells, and in Vitro Differentiated Macrophages for an Ideal Drug Delivery System in the Local Treatment of Multiple Myeloma. Biomacromolecules 2019; 20:2713-2725. [DOI: 10.1021/acs.biomac.9b00475] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Felix Schulze
- Department of Pediatrics, University Hospital Carl Gustav Carus, TU Dresden, Fetscherstraße 74, 01307 Dresden, Germany
| | - Bettina Keperscha
- Leibniz Institute of Polymer Research Dresden, Hohe Str. 6, 01069 Dresden, Germany
| | - Dietmar Appelhans
- Leibniz Institute of Polymer Research Dresden, Hohe Str. 6, 01069 Dresden, Germany
| | - Angela Rösen-Wolff
- Department of Pediatrics, University Hospital Carl Gustav Carus, TU Dresden, Fetscherstraße 74, 01307 Dresden, Germany
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8
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Ma Z, Zhu XX. Copolymers containing carbohydrates and other biomolecules: design, synthesis and applications. J Mater Chem B 2019; 7:1361-1378. [DOI: 10.1039/c8tb03162b] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review highlights recent progress in random and block copolymers containing sugar and other biocompounds, including their design, synthesis, properties and selected applications.
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Affiliation(s)
- Zhiyuan Ma
- Département de Chimie
- Université de Montréal
- Montreal
- Canada
| | - X. X. Zhu
- Département de Chimie
- Université de Montréal
- Montreal
- Canada
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Pountos I, Giannoudis PV. Drug-eluting implants for the suppression of metastatic bone disease: current insights. Expert Rev Med Devices 2018; 15:301-311. [PMID: 29561689 DOI: 10.1080/17434440.2018.1456336] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
INTRODUCTION The fixation of impending or pathologic fractures is challenging and their successful management can have a favourable impact on the quality of life of the patient. The progression of the metastatic bone disease can cause significant pain and disability but also could result in the loosening and subsequent failure of the implants. To prevent the additional local growth, postoperative radiotherapy is often recommended, and many patients receive endocrine or chemotherapy. AREAS COVERED Several reports support the antineoplastic drugs to bone cement as an adjuvant to improve implant stability as well as to prevent local cancer progression and failure of reconstructive devices used to treat patients with pathologic fractures. The aim of the present review is to present our current understanding on the effect of local delivery of antineoplastic drugs at the bone site. EXPERT COMMENTARY Encouraging evidence support the application of bone cement loaded with antineoplastic drugs to fill defects and strengthen the fixation of orthopaedic implants. This is an inexpensive and safe method that can improve implant stability, prevent local cancer progression and failure of reconstructive devices. To fully evaluate its clinical effectiveness randomized clinical studies are needed.
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Affiliation(s)
- Ippokratis Pountos
- a Academic Department of Trauma & Orthopaedics, School of Medicine , University of Leeds , Leeds , UK
| | - Peter V Giannoudis
- a Academic Department of Trauma & Orthopaedics, School of Medicine , University of Leeds , Leeds , UK
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Kruppke B, Hose D, Schnettler R, Seckinger A, Rößler S, Hanke T, Heinemann S. Drug Release as a function of bioactivity, incubation regime, liquid, and initial load: Release of bortezomib from calcium phosphate-containing silica/collagen xerogels. J Biomed Mater Res B Appl Biomater 2017; 106:1165-1173. [PMID: 28556562 DOI: 10.1002/jbm.b.33931] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 04/10/2017] [Accepted: 05/12/2017] [Indexed: 01/14/2023]
Abstract
The ability of silica-/collagen-based composite xerogels to act as drug delivery systems was evaluated by taking into account the initial drug concentration, bioactivity of the xerogels, liquid, and incubation regime. The proteasome inhibitor bortezomib was chosen as a model drug, used for the systemic treatment of multiple myeloma. Incubation during 14 days in phosphate-buffered saline (PBS) or simulated body fluid (SBF) showed a weak initial burst and was identified to be of first order with subsequent release being independent from the initial load of 0.1 or 0.2 mg bortezomib per 60 mg monolithic sample. Faster drug release occurred during incubation in SBF compared to PBS, and during static incubation without changing the liquid, compared to dynamic incubation with daily liquid changes. Drug-loaded xerogels with hydroxyapatite as a third component exhibited enhanced bioactivity retarding drug release, explained by formation of a surface calcium phosphate layer. The fastest release of 50% of the total drug load was observed for biphasic xerogels after 7 days during dynamic incubation in SBF. As a result, the presented concept is suitable for the intended combination of the advantageous bone substitution properties of xerogels and local application of drugs exemplified by bortezomib. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 1165-1173, 2018.
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Affiliation(s)
- Benjamin Kruppke
- Max Bergmann Center of Biomaterials and Institute of Materials Science, Technische Universität Dresden, 01069, Dresden, Germany
| | - Dirk Hose
- Labor für Myelomforschung, Medizinische Klinik V, Universitätsklinikum Heidelberg, 69120, Heidelberg, Germany
| | - Reinhard Schnettler
- Laboratory for Experimental Trauma Surgery, University of Giessen, 35385, Giessen, Germany
| | - Anja Seckinger
- Labor für Myelomforschung, Medizinische Klinik V, Universitätsklinikum Heidelberg, 69120, Heidelberg, Germany
| | - Sina Rößler
- Max Bergmann Center of Biomaterials and Institute of Materials Science, Technische Universität Dresden, 01069, Dresden, Germany
| | - Thomas Hanke
- Max Bergmann Center of Biomaterials and Institute of Materials Science, Technische Universität Dresden, 01069, Dresden, Germany
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Xiao Y, Sun H, Du J. Sugar-Breathing Glycopolymersomes for Regulating Glucose Level. J Am Chem Soc 2017; 139:7640-7647. [DOI: 10.1021/jacs.7b03219] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yufen Xiao
- Department
of Polymeric Materials, School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
| | - Hui Sun
- Department
of Polymeric Materials, School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
| | - Jianzhong Du
- Department
of Polymeric Materials, School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
- Shanghai
Tenth People’s Hospital, Tongji University School of Medicine, Shanghai 200072, China
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Petzold R, Vehlow D, Urban B, Grab AL, Cavalcanti-Adam EA, Alt V, Müller M. Colloid, adhesive and release properties of nanoparticular ternary complexes between cationic and anionic polysaccharides and basic proteins like bone morphogenetic protein BMP-2. Colloids Surf B Biointerfaces 2016; 151:58-67. [PMID: 27984825 DOI: 10.1016/j.colsurfb.2016.11.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 10/19/2016] [Accepted: 11/23/2016] [Indexed: 10/20/2022]
Abstract
Herein we describe an interfacial local drug delivery system for bone morphogenetic protein 2 (BMP-2) based on coatings of polyelectrolyte complex (PEC) nanoparticles (NP). The application horizon is the functionalization of bone substituting materials (BSM) used for the therapy of systemic bone diseases. Nanoparticular ternary complexes of cationic and anionic polysaccharides and BMP-2 or two further model proteins, respectively, were prepared in dependence of the molar mixing ratio, pH value and of the cationic polysaccharide. As further proteins chymotrypsin (CHY) and papain (PAP) were selected, which served as model proteins for BMP-2 due to similar isoelectric points and molecular weights. As charged polysaccharides ethylenediamine modified cellulose (EDAC) and trimethylammonium modified cellulose (PQ10) were combined with cellulose sulphatesulfate (CS). Mixing diluted cationic and anionic polysaccharide and protein solutions according to a slight either anionic or cationic excess charge colloidal ternary dispersions formed, which were cast onto germanium model substrates by water evaporation. Dynamic light scattering (DLS) demonstrated, that these dispersions were colloidally stable for at least one week. Fourier Transform Infrared (FTIR) showed, that the cast protein loaded PEC NP coatings were irreversibly adhesive at the model substrate in contact to HEPES buffer and solely CHY, PAP and BMP-2 were released within long-term time scale. Advantageously, out of the three proteins BMP-2 showed the smallest initial burst and the slowest release kinetics and around 25% of the initial BMP-2 content were released within 14days. Released BMP-2 showed significant activity in the myoblast cells indicating the ability to regulate the formation of new bone. Therefore, BMP-2 loaded PEC NP are suggested as novel promising tool for the functionalization of BSM used for the therapy of systemic bone diseases.
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Affiliation(s)
- R Petzold
- Technische Universität Dresden, Fachrichtung Chemie und Lebensmittelchemie, 01062 Dresden, Germany
| | - D Vehlow
- Leibniz-Institut für Polymerforschung Dresden e.V., Abt. Polyelektrolyte und Dispersionen, Hohe Straße 6, 01069 Dresden, Germany; Technische Universität Dresden, Fachrichtung Chemie und Lebensmittelchemie, 01062 Dresden, Germany
| | - B Urban
- Leibniz-Institut für Polymerforschung Dresden e.V., Abt. Polyelektrolyte und Dispersionen, Hohe Straße 6, 01069 Dresden, Germany
| | - A L Grab
- Ruprecht-Karls-Universität Heidelberg, Institut für Physikalische Chemie, Abt. Biophysikalische Chemie, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany
| | - E A Cavalcanti-Adam
- Ruprecht-Karls-Universität Heidelberg, Institut für Physikalische Chemie, Abt. Biophysikalische Chemie, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany; Max-Planck-Institut für Medizinische Forschung, Abt. Zelluläre Biophysik, Jahnstr. 29, 69120 Heidelberg, Germany
| | - V Alt
- Klinik und Poliklinik für Unfallchirurgie, Justus-Liebig-Universität Giessen, Rudolf-Buchheim-Straße 7, 35385 Giessen, Germany
| | - M Müller
- Leibniz-Institut für Polymerforschung Dresden e.V., Abt. Polyelektrolyte und Dispersionen, Hohe Straße 6, 01069 Dresden, Germany; Technische Universität Dresden, Fachrichtung Chemie und Lebensmittelchemie, 01062 Dresden, Germany.
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13
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Polyelectrolyte Complex Based Interfacial Drug Delivery System with Controlled Loading and Improved Release Performance for Bone Therapeutics. NANOMATERIALS 2016; 6:nano6030053. [PMID: 28344311 PMCID: PMC5302517 DOI: 10.3390/nano6030053] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 02/26/2016] [Accepted: 03/14/2016] [Indexed: 11/17/2022]
Abstract
An improved interfacial drug delivery system (DDS) based on polyelectrolyte complex (PEC) coatings with controlled drug loading and improved release performance was elaborated. The cationic homopolypeptide poly(l-lysine) (PLL) was complexed with a mixture of two cellulose sulfates (CS) of low and high degree of substitution, so that the CS and PLL solution have around equal molar charged units. As drugs the antibiotic rifampicin (RIF) and the bisphosphonate risedronate (RIS) were integrated. As an important advantage over previous PEC systems this one can be centrifuged, the supernatant discarded, the dense pellet phase (coacervate) separated, and again redispersed in fresh water phase. This behavior has three benefits: (i) Access to the loading capacity of the drug, since the concentration of the free drug can be measured by spectroscopy; (ii) lower initial burst and higher residual amount of drug due to removal of unbound drug and (iii) complete adhesive stability due to the removal of polyelectrolytes (PEL) excess component. It was found that the pH value and ionic strength strongly affected drug content and release of RIS and RIF. At the clinically relevant implant material (Ti40Nb) similar PEC adhesive and drug release properties compared to the model substrate were found. Unloaded PEC coatings at Ti40Nb showed a similar number and morphology of above cultivated human mesenchymal stem cells (hMSC) compared to uncoated Ti40Nb and resulted in considerable production of bone mineral. RIS loaded PEC coatings showed similar effects after 24 h but resulted in reduced number and unhealthy appearance of hMSC after 48 h due to cell toxicity of RIS.
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