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Placci M, Giannotti MI, Muro S. Polymer-based drug delivery systems under investigation for enzyme replacement and other therapies of lysosomal storage disorders. Adv Drug Deliv Rev 2023; 197:114683. [PMID: 36657645 PMCID: PMC10629597 DOI: 10.1016/j.addr.2022.114683] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 11/30/2022] [Accepted: 12/25/2022] [Indexed: 01/18/2023]
Abstract
Lysosomes play a central role in cellular homeostasis and alterations in this compartment associate with many diseases. The most studied example is that of lysosomal storage disorders (LSDs), a group of 60 + maladies due to genetic mutations affecting lysosomal components, mostly enzymes. This leads to aberrant intracellular storage of macromolecules, altering normal cell function and causing multiorgan syndromes, often fatal within the first years of life. Several treatment modalities are available for a dozen LSDs, mostly consisting of enzyme replacement therapy (ERT) strategies. Yet, poor biodistribution to main targets such as the central nervous system, musculoskeletal tissue, and others, as well as generation of blocking antibodies and adverse effects hinder effective LSD treatment. Drug delivery systems are being studied to surmount these obstacles, including polymeric constructs and nanoparticles that constitute the focus of this article. We provide an overview of the formulations being tested, the diseases they aim to treat, and the results observed from respective in vitro and in vivo studies. We also discuss the advantages and disadvantages of these strategies, the remaining gaps of knowledge regarding their performance, and important items to consider for their clinical translation. Overall, polymeric nanoconstructs hold considerable promise to advance treatment for LSDs.
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Affiliation(s)
- Marina Placci
- Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute for Science and Technology (BIST), Barcelona 08028, Spain
| | - Marina I Giannotti
- Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute for Science and Technology (BIST), Barcelona 08028, Spain; CIBER-BBN, ISCIII, Barcelona, Spain; Department of Materials Science and Physical Chemistry, University of Barcelona, Barcelona 08028, Spain
| | - Silvia Muro
- Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute for Science and Technology (BIST), Barcelona 08028, Spain; Institute of Catalonia for Research and Advanced Studies (ICREA), Barcelona 08010, Spain; Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, USA; Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, USA.
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2
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Jeong CH, Kim J, Kim HS, Lim SY, Han D, Huser AJ, Lee SB, Gim Y, Ji JH, Kim D, Aldosari AM, Yun K, Kwak YH. Acceleration of bone formation by octacalcium phosphate composite in a rat tibia critical-sized defect. J Orthop Translat 2022; 37:100-112. [PMID: 36262961 PMCID: PMC9574596 DOI: 10.1016/j.jot.2022.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 11/17/2022] Open
Abstract
Background The osteogenic capabilities and biodegradability of octacalcium phosphate (OCP) composites make them unique. Despite the excellent characteristics of OCP, their use is limited due to handling difficulties. In this study, we aimed to evaluate and compare three types of OCPs (cemented OCP (C-OCP), C-OCP with collagen (OCP/Col), and synthetic OCP (S-OCP) with alginate (OCP/Alg)) versus commercially available β-tricalcium phosphate (β-TCP) regarding their potential to accelerate bone formation in defective rat tibias. Methods The specimens with OCP composite were manufactured into 5 mm cubes and inserted into the segmental defects of rat tibias fixed with an external fixator. In addition, 3 mm-hole defects in rat tibias were evaluated to compare the graft material properties in different clinical situations. Serial X-ray studies were evaluated weekly and the tibias were harvested at postoperative 6 weeks or 8 weeks for radiologic evaluation. Histological and histomorphometric analyses were performed to evaluate the acceleration of bone formation. Results In the critical-defect model, OCP/Alg showed bone bridges between segmentally resected bone ends that were comparable to those of β-TCP. However, differences were observed in the residual graft materials. Most β-TCP was maintained until 8 weeks postoperatively; however, OCP/Alg was more biodegradable. In addition calcification in the β-TCP occurred at the directly contacted area between graft particles and bony ingrowth was observed in the region adjacent resected surface of tibia. In contrast, no direct bony ingrowth was observed in OCP-based materials, but osteogenesis induced from resected surface of tibia was more active. In the hole-defect model, OCP/Col accelerated bone formation. β-TCP and OCP/Alg showed similar patterns with relatively higher biodegradability. In histology, among the OCP-based materials, directly contacted new bone was formed only in OCP/Alg group. The new bone formation in the periphery area of graft materials was much more active in the OCP-based materials, and the newly formed bone showed a thicker trabecular and more mature appearance than the β-TCP group. Conclusions In this study, OCP/Alg was equivalent to β-TCP in the acceleration of bone formation with better biodegradability appropriate for clinical situations in different circumstances. Our OCP/Col composite showed fast degradation, which makes it unsuitable for use in mechanical stress conditions in clinical orthopedic settings. The Translational Potential of this Article In our research, we compared our various manufactured OCP composites to commercially available β-TCP in critical-defect rat tibia model. OCP/Col showed acceleration in hole-defect model as previous studies in dental field but in our critical-sized defect model it resorbed fast without acceleration of bony union. OCP/Alg showed matched results compared to β-TCP and relatively fast resorption so we showed market value in special clinical indication depending on treatment strategy. This is the first OCP composite study in orthopaedics with animal critical-sized tibia bone study and further study should be considered for clinical application based on this study.
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Affiliation(s)
- Cheol-Hee Jeong
- Department of Oral Pathology, Yonsei University College of Dentistry, Seoul, South Korea
| | - Jooseong Kim
- Department of Biomedical Engineering, Yeungnam University, Daegu, Republic of Korea.,HudensBio Co., Ltd., Gwangju, Republic of Korea
| | - Hyun Sil Kim
- Department of Oral Pathology, Yonsei University College of Dentistry, Seoul, South Korea
| | - Song-Yi Lim
- Department of Orthopedic Surgery, Asan Medical Center, Ulsan University College of Medicine, Seoul, South Korea
| | - Dawool Han
- Department of Oral Pathology, Yonsei University College of Dentistry, Seoul, South Korea
| | - Aaron J Huser
- Paley Advanced Limb Lengthening Institutute, St. Mary's Hospital, West Palm Beach, FL, USA
| | - Sang Bae Lee
- Center for Testing and Evaluation of Dental Biomaterials, Ministry of Food and Drug Safety Recognition Laboratory, Yonsei University College of Dentistry, Seoul, South Korea
| | - Yeonji Gim
- Department of Orthopedic Surgery, Asan Medical Center, Ulsan University College of Medicine, Seoul, South Korea
| | - Jeong Hyun Ji
- Department of Laboratory Animal Resources, Yonsei Biomedical Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Dohun Kim
- Department of Orthopedic Surgery, Asan Medical Center, Ulsan University College of Medicine, Seoul, South Korea
| | - Amaal M Aldosari
- Department of Orthopedic Surgery, Asan Medical Center, Ulsan University College of Medicine, Seoul, South Korea.,Department of Orthopedic Surgery, Al Noor Specialist Hospital, Makkah, Saudi Arabia
| | - Kyelim Yun
- HudensBio Co., Ltd., Gwangju, Republic of Korea
| | - Yoon Hae Kwak
- Department of Orthopedic Surgery, Asan Medical Center, Ulsan University College of Medicine, Seoul, South Korea
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Venkatesan J, Murugan SS, Ad P, Dgv Y, Seong GH. Alginate-based Composites Microspheres: Preparations and Applications for Bone Tissue Engineering. Curr Pharm Des 2022; 28:1067-1081. [PMID: 35593346 DOI: 10.2174/1381612828666220518142911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 01/19/2022] [Indexed: 11/22/2022]
Abstract
Alginate-based biomaterials have been extensively studied for bone tissue engineering. Scaffolds, microspheres, and hydrogels can be developed using alginate, which is biocompatible, biodegradable, and able to deliver growth factors and drugs. Alginate microspheres can be produced using crosslinking, microfluidic, three-dimensional printing, extrusion, and emulsion methods. The sizes of the alginate microspheres range from 10 µm to 4 mm. This review describes the chemical characterization and mechanical assessment of alginate-based microspheres. Combinations of alginate with hydroxyapatite, chitosan, collagen, polylactic acid, polycaprolactone, and bioglass were discussed for bone tissue repair and regeneration. In addition, alginate combinations with bone morphogenetic proteins, vascular endothelial growth factor, transforming growth factor beta-3, other growth factors, cells, proteins, drugs, and osteoinductive drugs were analyzed for tissue engineering applications. Furthermore, the biocompatibility of developed alginate microspheres was discussed for different cell lines. Finally, alginate microsphere-based composites with stem cell interaction for bone tissue regeneration were presented. In the present review, we have assessed the preclinical research on in vivo models of alginate-based microspheres for bone tissue repair and regeneration. Overall, alginate-based microspheres are potential candidates for graft substitutes and the treatment of various bone-related diseases.
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Affiliation(s)
- Jayachandran Venkatesan
- Department of Bionano Engineering, Center for Bionano Intelligence Education and Research, Hanyang University, ERICA, Ansan 426-791, South Korea.,Biomaterials Research Laboratory, Yenepoya Research Centre, Yenepoya (Deemed to be University), Deralakatte, Mangaluru, 575018, India
| | - Sesha Subramanian Murugan
- Department of Bionano Engineering, Center for Bionano Intelligence Education and Research, Hanyang University, ERICA, Ansan 426-791, South Korea
| | - Pandurang Ad
- Department of Bionano Engineering, Center for Bionano Intelligence Education and Research, Hanyang University, ERICA, Ansan 426-791, South Korea
| | - Yashaswini Dgv
- Department of Bionano Engineering, Center for Bionano Intelligence Education and Research, Hanyang University, ERICA, Ansan 426-791, South Korea
| | - Gi Hun Seong
- Biomaterials Research Laboratory, Yenepoya Research Centre, Yenepoya (Deemed to be University), Deralakatte, Mangaluru, 575018, India
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Zhu CY, Li FL, Zhang YW, Gupta RK, Patel SKS, Lee JK. Recent Strategies for the Immobilization of Therapeutic Enzymes. Polymers (Basel) 2022; 14:polym14071409. [PMID: 35406282 PMCID: PMC9003532 DOI: 10.3390/polym14071409] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/18/2022] [Accepted: 03/23/2022] [Indexed: 02/04/2023] Open
Abstract
Therapeutic enzymes play important roles in modern medicine due to their high affinity and specificity. However, it is very expensive to use them in clinical medicine because of their low stability and bioavailability. To improve the stability and effectiveness of therapeutic enzymes, immobilization techniques have been employed to enhance the applications of therapeutic enzymes in the past few years. Reported immobilization techniques include entrapment, adsorption, and covalent attachment. In addition, protein engineering is often used to improve enzyme properties; however, all methods present certain advantages and limitations. For carrier-bound immobilization, the delivery and release of the immobilized enzyme depend on the properties of the carrier and enzyme. In this review, we summarize the advantages and challenges of the current strategies developed to deliver therapeutic enzymes and provide a future perspective on the immobilization technologies used for therapeutic enzyme delivery.
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Affiliation(s)
- Chen-Yuan Zhu
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, China; (C.-Y.Z.); (F.-L.L.)
| | - Fei-Long Li
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, China; (C.-Y.Z.); (F.-L.L.)
| | - Ye-Wang Zhang
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, China; (C.-Y.Z.); (F.-L.L.)
- Correspondence: (Y.-W.Z.); (S.K.S.P.); (J.-K.L.); Tel.: +82-2-450-3505 (J.-K.L.)
| | - Rahul K. Gupta
- Department of Chemical Engineering, Konkuk University, Seoul 05029, Korea;
| | - Sanjay K. S. Patel
- Department of Chemical Engineering, Konkuk University, Seoul 05029, Korea;
- Correspondence: (Y.-W.Z.); (S.K.S.P.); (J.-K.L.); Tel.: +82-2-450-3505 (J.-K.L.)
| | - Jung-Kul Lee
- Department of Chemical Engineering, Konkuk University, Seoul 05029, Korea;
- Correspondence: (Y.-W.Z.); (S.K.S.P.); (J.-K.L.); Tel.: +82-2-450-3505 (J.-K.L.)
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5
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Novel strategies of third level (Organelle-specific) drug targeting: An innovative approach of modern therapeutics. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2020.102315] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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6
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Lourenço AH, Torres AL, Vasconcelos DP, Ribeiro-Machado C, Barbosa JN, Barbosa MA, Barrias CC, Ribeiro CC. Osteogenic, anti-osteoclastogenic and immunomodulatory properties of a strontium-releasing hybrid scaffold for bone repair. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 99:1289-1303. [PMID: 30889663 DOI: 10.1016/j.msec.2019.02.053] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 02/04/2019] [Accepted: 02/15/2019] [Indexed: 01/08/2023]
Abstract
Strontium (Sr) is known to stimulate osteogenesis, while inhibiting osteoclastogenesis, thus encouraging research on its application as a therapeutic agent for bone repair/regeneration. It has been suggested that it may possess immunomodulatory properties, which might act synergistically in bone repair/regeneration processes. To further explore this hypothesis we have designed a Sr-hybrid system composed of an in situ forming Sr-crosslinked RGD-alginate hydrogel reinforced with Sr-doped hydroxyapatite (HAp) microspheres and studied its in vitro osteoinductive behaviour and in vivo inflammatory response. The Sr-hybrid scaffold acts as a dual Sr2+ delivery system, showing a cumulative Sr2+ release of ca. 0.3 mM after 15 days. In vitro studies using Sr2+concentrations within this range (0 to 3 mM Sr2+) confirmed its ability to induce osteogenic differentiation of mesenchymal stem/stromal cells (MSC), as well as to reduce osteoclastogenesis and osteoclasts (OC) functionality. In comparison with a similar Sr-free system, the Sr-hybrid system stimulated osteogenic differentiation of MSC, while inhibiting the formation of OC. Implantation in an in vivo model of inflammation, revealed an increase in F4/80+/CD206+ cells, highlighting its ability to modulate the inflammatory response as a pro-resolution mediator, through M2 macrophage polarization. Therefore, the Sr-hybrid system is potentially an appealing biomaterial for future clinical applications.
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Affiliation(s)
- Ana Henriques Lourenço
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal; Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal
| | - Ana Luísa Torres
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal; ICBAS - Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira n. 228, 4050-313 Porto, Portugal
| | - Daniela P Vasconcelos
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal; ICBAS - Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira n. 228, 4050-313 Porto, Portugal
| | - Cláudia Ribeiro-Machado
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal
| | - Judite N Barbosa
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal; ICBAS - Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira n. 228, 4050-313 Porto, Portugal
| | - Mário A Barbosa
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal; ICBAS - Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira n. 228, 4050-313 Porto, Portugal
| | - Cristina C Barrias
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal; ICBAS - Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira n. 228, 4050-313 Porto, Portugal
| | - Cristina C Ribeiro
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal; ISEP - Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015, Porto, Portugal.
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Sharma A, Vaghasiya K, Ray E, Verma RK. Lysosomal targeting strategies for design and delivery of bioactive for therapeutic interventions. J Drug Target 2017; 26:208-221. [DOI: 10.1080/1061186x.2017.1374390] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Ankur Sharma
- Institute of Nano Science and Technology (INST), Phase 10, Mohali, India
| | - Kalpesh Vaghasiya
- Institute of Nano Science and Technology (INST), Phase 10, Mohali, India
| | - Eupa Ray
- Institute of Nano Science and Technology (INST), Phase 10, Mohali, India
| | - Rahul Kumar Verma
- Institute of Nano Science and Technology (INST), Phase 10, Mohali, India
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8
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Solomon M, Muro S. Lysosomal enzyme replacement therapies: Historical development, clinical outcomes, and future perspectives. Adv Drug Deliv Rev 2017; 118:109-134. [PMID: 28502768 PMCID: PMC5828774 DOI: 10.1016/j.addr.2017.05.004] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 04/26/2017] [Accepted: 05/08/2017] [Indexed: 01/06/2023]
Abstract
Lysosomes and lysosomal enzymes play a central role in numerous cellular processes, including cellular nutrition, recycling, signaling, defense, and cell death. Genetic deficiencies of lysosomal components, most commonly enzymes, are known as "lysosomal storage disorders" or "lysosomal diseases" (LDs) and lead to lysosomal dysfunction. LDs broadly affect peripheral organs and the central nervous system (CNS), debilitating patients and frequently causing fatality. Among other approaches, enzyme replacement therapy (ERT) has advanced to the clinic and represents a beneficial strategy for 8 out of the 50-60 known LDs. However, despite its value, current ERT suffers from several shortcomings, including various side effects, development of "resistance", and suboptimal delivery throughout the body, particularly to the CNS, lowering the therapeutic outcome and precluding the use of this strategy for a majority of LDs. This review offers an overview of the biomedical causes of LDs, their socio-medical relevance, treatment modalities and caveats, experimental alternatives, and future treatment perspectives.
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Affiliation(s)
- Melani Solomon
- Institute for Bioscience and Biotechnology Research, University Maryland, College Park, MD 20742, USA
| | - Silvia Muro
- Institute for Bioscience and Biotechnology Research, University Maryland, College Park, MD 20742, USA; Fischell Department of Bioengineering, University Maryland, College Park, MD 20742, USA.
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9
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Henriques Lourenço A, Neves N, Ribeiro-Machado C, Sousa SR, Lamghari M, Barrias CC, Trigo Cabral A, Barbosa MA, Ribeiro CC. Injectable hybrid system for strontium local delivery promotes bone regeneration in a rat critical-sized defect model. Sci Rep 2017; 7:5098. [PMID: 28698571 PMCID: PMC5506032 DOI: 10.1038/s41598-017-04866-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 05/22/2017] [Indexed: 12/11/2022] Open
Abstract
Strontium (Sr) has been described as having beneficial influence in bone strength and architecture. However, negative systemic effects have been reported on oral administration of Sr ranelate, leading to strict restrictions in clinical application. We hypothesized that local delivery of Sr improves osteogenesis without eliciting detrimental side effects. Therefore, the in vivo response to an injectable Sr-hybrid system composed of RGD-alginate hydrogel cross-linked in situ with Sr and reinforced with Sr-doped hydroxyapatite microspheres, was investigated. The system was injected in a critical-sized bone defect model and compared to a similar Sr-free material. Micro-CT results show a trend towards higher new bone formed in Sr-hybrid group and major histological differences were observed between groups. Higher cell invasion was detected at the center of the defect of Sr-hybrid group after 15 days with earlier bone formation. Higher material degradation with increase of collagen fibers and bone formation in the center of the defect after 60 days was observed as opposed to bone formation restricted to the periphery of the defect in the control. These histological findings support the evidence of an improved response with the Sr enriched material. Importantly, no alterations were observed in the Sr levels in systemic organs or serum.
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Affiliation(s)
- Ana Henriques Lourenço
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135, Porto, Portugal.,Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, s/n, 4200-465, Porto, Portugal
| | - Nuno Neves
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135, Porto, Portugal.,Faculdade de Medicina, Universidade do Porto, Serviço de Ortopedia, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal
| | - Cláudia Ribeiro-Machado
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135, Porto, Portugal
| | - Susana R Sousa
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135, Porto, Portugal.,ISEP - Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015, Porto, Portugal
| | - Meriem Lamghari
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135, Porto, Portugal
| | - Cristina C Barrias
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135, Porto, Portugal
| | - Abel Trigo Cabral
- Faculdade de Medicina, Universidade do Porto, Serviço de Ortopedia, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal
| | - Mário A Barbosa
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135, Porto, Portugal.,ICBAS - Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira n. 228, 4050-313, Porto, Portugal
| | - Cristina C Ribeiro
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135, Porto, Portugal. .,INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135, Porto, Portugal. .,ISEP - Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015, Porto, Portugal.
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10
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Gamella M, Privman M, Bakshi S, Melman A, Katz E. DNA Release from Fe
3+
‐Cross‐Linked Alginate Films Triggered by Logically Processed Biomolecular Signals: Integration of Biomolecular Computing and Actuation. Chemphyschem 2017; 18:1811-1821. [DOI: 10.1002/cphc.201700301] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 04/29/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Maria Gamella
- Department of Chemistry and Biomolecular Science Clarkson University Potsdam NY 13699-5810 USA
| | - Marina Privman
- Empire State College State University of New York (SUNY) P.O. Box 908 Fort Drum NY 13602 USA
| | - Saira Bakshi
- Department of Chemistry and Biomolecular Science Clarkson University Potsdam NY 13699-5810 USA
| | - Artem Melman
- Department of Chemistry and Biomolecular Science Clarkson University Potsdam NY 13699-5810 USA
| | - Evgeny Katz
- Department of Chemistry and Biomolecular Science Clarkson University Potsdam NY 13699-5810 USA
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11
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Scheja S, Domanskyi S, Gamella M, Wormwood KL, Darie CC, Poghossian A, Schöning MJ, Melman A, Privman V, Katz E. Glucose‐Triggered Insulin Release from Fe
3+
‐Cross‐linked Alginate Hydrogel: Experimental Study and Theoretical Modeling. Chemphyschem 2017; 18:1541-1551. [DOI: 10.1002/cphc.201700195] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Sabrina Scheja
- Department of Chemistry and Biomolecular Science Clarkson University Potsdam NY 13699-5810 USA
- Institute of Nano- and Biotechnologies, FH Aachen Aachen University of Applied Sciences, Campus Jülich Heinrich-Mußmann-Str. 1 52428 Jülich Germany
| | - Sergii Domanskyi
- Department of Physics Clarkson University Potsdam NY 13699-5820 USA
| | - Maria Gamella
- Department of Chemistry and Biomolecular Science Clarkson University Potsdam NY 13699-5810 USA
| | - Kelly L. Wormwood
- Department of Chemistry and Biomolecular Science Clarkson University Potsdam NY 13699-5810 USA
| | - Costel C. Darie
- Department of Chemistry and Biomolecular Science Clarkson University Potsdam NY 13699-5810 USA
| | - Arshak Poghossian
- Institute of Nano- and Biotechnologies, FH Aachen Aachen University of Applied Sciences, Campus Jülich Heinrich-Mußmann-Str. 1 52428 Jülich Germany
- Peter Grünberg Institute (PGI-8), Research Centre Jülich GmbH 52425 Jülich Germany
| | - Michael J. Schöning
- Institute of Nano- and Biotechnologies, FH Aachen Aachen University of Applied Sciences, Campus Jülich Heinrich-Mußmann-Str. 1 52428 Jülich Germany
- Peter Grünberg Institute (PGI-8), Research Centre Jülich GmbH 52425 Jülich Germany
| | - Artem Melman
- Department of Chemistry and Biomolecular Science Clarkson University Potsdam NY 13699-5810 USA
| | - Vladimir Privman
- Department of Physics Clarkson University Potsdam NY 13699-5820 USA
| | - Evgeny Katz
- Department of Chemistry and Biomolecular Science Clarkson University Potsdam NY 13699-5810 USA
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Privman V, Domanskyi S, Luz RAS, Guz N, Glasser ML, Katz E. Diffusion of Oligonucleotides from within Iron-Cross-Linked, Polyelectrolyte-Modified Alginate Beads: A Model System for Drug Release. Chemphyschem 2016; 17:976-84. [PMID: 26762598 DOI: 10.1002/cphc.201501186] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Indexed: 12/24/2022]
Abstract
An analytical model to describe diffusion of oligonucleotides from stable hydrogel beads is developed and experimentally verified. The synthesized alginate beads are Fe(3+) -cross-linked and polyelectrolyte-doped for uniformity and stability at physiological pH. Data on diffusion of oligonucleotides from inside the beads provide physical insights into the volume nature of the immobilization of a fraction of oligonucleotides due to polyelectrolyte cross-linking, that is, the absence of a surface-layer barrier in this case. Furthermore, the results suggest a new simple approach to measuring the diffusion coefficient of mobile oligonucleotide molecules inside hydrogels. The considered alginate beads provide a model for a well-defined component in drug-release systems and for the oligonucleotide-release transduction steps in drug-delivering and biocomputing applications. This is illustrated by destabilizing the beads with citrate, which induces full oligonucleotide release with nondiffusional kinetics.
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Affiliation(s)
- Vladimir Privman
- Department of Physics, Clarkson University, Potsdam, NY, 13676, USA.
| | - Sergii Domanskyi
- Department of Physics, Clarkson University, Potsdam, NY, 13676, USA
| | - Roberto A S Luz
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY, 13676, USA.,Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos, SP, 13560-970, Brazil
| | - Nataliia Guz
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY, 13676, USA
| | | | - Evgeny Katz
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY, 13676, USA.
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Neves N, Campos BB, Almeida IF, Costa PC, Cabral AT, Barbosa MA, Ribeiro CC. Strontium-rich injectable hybrid system for bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 59:818-827. [DOI: 10.1016/j.msec.2015.10.038] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 09/10/2015] [Accepted: 10/12/2015] [Indexed: 12/21/2022]
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Endo K, Anada T, Yamada M, Seki M, Sasaki K, Suzuki O. Enhancement of osteoblastic differentiation in alginate gel beads with bioactive octacalcium phosphate particles. Biomed Mater 2015; 10:065019. [DOI: 10.1088/1748-6041/10/6/065019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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15
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Muro S. Strategies for delivery of therapeutics into the central nervous system for treatment of lysosomal storage disorders. Drug Deliv Transl Res 2015; 2:169-86. [PMID: 24688886 DOI: 10.1007/s13346-012-0072-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Lysosomal storage disorders (LSDs) are a group of about fifty life-threatening conditions caused by genetic defects affecting lysosomal components. The underscoring molecular deficiency leads to widespread cellular dysfunction through most tissues in the body, including peripheral organs and the central nervous system (CNS). Efforts during the last few decades have rendered a remarkable advance regarding our knowledge, medical awareness, and early detection of these genetic defects, as well as development of several treatment modalities. Clinical and experimental strategies encompassing enzyme replacement, gene and cell therapies, substrate reduction, and chemical chaperones are showing considerable potential in attenuating the peripheral pathology. However, a major drawback has been encountered regarding the suboptimal impact of these approaches on the CNS pathology. Particular anatomical and biochemical constraints of this tissue pose a major obstacle to the delivery of therapeutics into the CNS. Approaches to overcome these obstacles include modalities of local administration, strategies to enhance the blood-CNS permeability, intranasal delivery, use of exosomes, and those exploiting targeting of transporters and transcytosis pathways in the endothelial lining. The later two approaches are being pursued at the time by coupling therapeutic agents to affinity moieties and drug delivery systems capable of targeting these natural transport routes. This approach is particularly promising, as using paths naturally active at this interface may render safe and effective delivery of LSD therapies into the CNS.
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Affiliation(s)
- Silvia Muro
- Institute for Bioscience and Biotechnology Research University of Maryland, College Park, MD, 20742, USA ; Fischell Dept. of Bioengineering, University of Maryland, College Park, MD, 20742, USA
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Development and optimization of polymeric self-emulsifying nanocapsules for localized drug delivery: design of experiment approach. ScientificWorldJournal 2014; 2014:516069. [PMID: 25525620 PMCID: PMC4265377 DOI: 10.1155/2014/516069] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 09/22/2014] [Indexed: 12/02/2022] Open
Abstract
The purpose of the present study was to formulate polymeric self-emulsifying curcumin nanocapsules with high encapsulation efficiency, good emulsification ability, and optimal globule size for localized targeting in the colon. Formulations were prepared using modified quasiemulsion solvent diffusion method. Concentration of formulation variables, namely, X1 (oil), X2 (polymeric emulsifier), and X3 (adsorbent), was optimized by design of experiments using Box-Behnken design, for its impact on mean globule size (Y1) and encapsulation efficiency (Y2) of the formulation. Polymeric nanocapsules with an average diameter of 100–180 nm and an encapsulation efficiency of 64.85 ± 0.12% were obtained. In vitro studies revealed that formulations released the drug after 5 h lag time corresponding to the time to reach the colonic region. Pronounced localized action was inferred from the plasma concentration profile (Cmax 200 ng/mL) that depicts limited systemic absorption. Roentgenography study confirms the localized presence of carrier (0–2 h in upper GIT; 2–4 h in small intestine; and 4–24 h in the lower intestine). Optimized formulation showed significantly higher cytotoxicity (IC50 value 20.32 μM) in HT 29 colonic cancer cell line. The present study demonstrates systematic development of polymeric self-emulsifying nanocapsule formulation of curcumin for localized targeting in colon.
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Bidarra SJ, Barrias CC, Granja PL. Injectable alginate hydrogels for cell delivery in tissue engineering. Acta Biomater 2014; 10:1646-62. [PMID: 24334143 DOI: 10.1016/j.actbio.2013.12.006] [Citation(s) in RCA: 329] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 11/28/2013] [Accepted: 12/05/2013] [Indexed: 12/16/2022]
Abstract
Alginate hydrogels are extremely versatile and adaptable biomaterials, with great potential for use in biomedical applications. Their extracellular matrix-like features have been key factors for their choice as vehicles for cell delivery strategies aimed at tissue regeneration. A variety of strategies to decorate them with biofunctional moieties and to modulate their biophysical properties have been developed recently, which further allow their tailoring to the desired application. Additionally, their potential use as injectable materials offers several advantages over preformed scaffold-based approaches, namely: easy incorporation of therapeutic agents, such as cells, under mild conditions; minimally invasive local delivery; and high contourability, which is essential for filling in irregular defects. Alginate hydrogels have already been explored as cell delivery systems to enhance regeneration in different tissues and organs. Here, the in vitro and in vivo potential of injectable alginate hydrogels to deliver cells in a targeted fashion is reviewed. In each example, the selected crosslinking approach, the cell type, the target tissue and the main findings of the study are highlighted.
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Affiliation(s)
- Sílvia J Bidarra
- INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal.
| | - Cristina C Barrias
- INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal.
| | - Pedro L Granja
- INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal; FEUP - Faculdade de Engenharia da Universidade do Porto, Departamento de Engenharia Metalúrgica e de Materiais, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal; ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
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Abstract
AbstractThe focus of this review paper is on the design and implementation of smart ‘Sense-and-Treat’ systems using enzyme-biocatalytic systems. These systems were used to perform biomolecular computing and they were functionally integrated with signal responsive materials aiming towards their biomedical use. Electrode interfaces, functionalized with signal-responsive materials, find applications in biocomputing, biosensing, and, specifically, triggered release of bioactive substances. ‘Sense-and-Treat’ systems require multiple components working together, including biosensors, actuators, and filters, in order to achieve closed-loop and autonomous operation. In general, biochemical logic networks were developed to process single biochemical or chemical inputs as well as multiple inputs, responding to nonphysiological (for concept demonstration purposes) and physiological signals (for injury detection or diagnosis). Actuation of drug-mimicking release was performed using the responsive material iron-cross-linked alginate with entrapped biomolecular species, responding to physical, chemical or biochemical signals.
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Poojari R, Srivastava R. Composite alginate microspheres as the next-generation egg-box carriers for biomacromolecules delivery. Expert Opin Drug Deliv 2013; 10:1061-76. [DOI: 10.1517/17425247.2013.796361] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Suzuki O, Anada T. Synthetic octacalcium phosphate: a possible carrier for mesenchymal stem cells in bone regeneration. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2013; 2013:397-400. [PMID: 24109707 DOI: 10.1109/embc.2013.6609520] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The present paper reviews biomaterial studies of synthetic octacalcium phosphate (OCP) as a scaffold of osteoblastic cells. OCP crystals have been suggested to be one of precursor phases in hydroxyapatite (HA) crystal formation in bone and tooth. The recent intensive biomaterials and tissue engineering studies using synthetic OCP disclosed the potential function of OCP as a bioactive material as well as synthetic HA materials due to its highly osteoconductive and biodegradable properties. In vitro studies showed that OCP crystals exhibit a positive effect on osteoblastic cell differentiation. In vivo studies confirmed that the materials of OCP in a granule forms and OCP-based composite materials with natural polymers, such as gelatin and collagen, enhance bone regeneration if implanted in various model bone defects with critical-sized diameters, defined as a defect which does not heal spontaneously throughout the lifetime of the animals. One of particular characteristics of OCP, found as a mechanism to enhance bone regeneration in vivo, is a process of progressive conversion from OCP to HA at physiological conditions. The OCP-HA conversion is accompanied by progressive physicochemical changes of the material properties, which affects the tissue reaction around the crystals where osteoblastic cells are encountered. Mesenchymal stem cells (MSCs) seeded in an OCP-based material enhanced bone regeneration in the rat critical-sized calvaria defect more than that by the material alone. The overall results reveal that OCP crystals have an effect on osteoblastic cell differentiation including the differentiation of MSCs in vivo. The evidence collected experimentally in the laboratory was presented.
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Alginate microencapsulation technology for the percutaneous delivery of adipose-derived stem cells. Ann Plast Surg 2012; 68:229; author reply 229-30. [PMID: 22270571 DOI: 10.1097/sap.0b013e3182384068] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Jin Z, Harvey AM, Mailloux S, Halámek J, Bocharova V, Twiss MR, Katz E. Electrochemically stimulated release of lysozyme from an alginate matrix cross-linked with iron cations. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm32008h] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Jin Z, Güven G, Bocharova V, Halámek J, Tokarev I, Minko S, Melman A, Mandler D, Katz E. Electrochemically controlled drug-mimicking protein release from iron-alginate thin-films associated with an electrode. ACS APPLIED MATERIALS & INTERFACES 2012; 4:466-75. [PMID: 22200073 DOI: 10.1021/am201578m] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Novel biocompatible hybrid-material composed of iron-ion-cross-linked alginate with embedded protein molecules has been designed for the signal-triggered drug release. Electrochemically controlled oxidation of Fe(2+) ions in the presence of soluble natural alginate polymer and drug-mimicking protein (bovine serum albumin, BSA) results in the formation of an alginate-based thin-film cross-linked by Fe(3+) ions at the electrode interface with the entrapped protein. The electrochemically generated composite thin-film was characterized by electrochemistry and atomic force microscopy (AFM). Preliminary experiments demonstrated that the electrochemically controlled deposition of the protein-containing thin-film can be performed at microscale using scanning electrochemical microscopy (SECM) as the deposition tool producing polymer-patterned spots potentially containing various entrapped drugs. Application of reductive potentials on the modified electrode produced Fe(2+) cations which do not keep complexation with alginate, thus resulting in the electrochemically triggered thin-film dissolution and the protein release. Different experimental parameters, such as the film-deposition time, concentrations of compounds and applied potentials, were varied in order to demonstrate that the electrodepositon and electrodissolution of the alginate composite film can be tuned to the optimum performance. A statistical modeling technique was applied to find optimal conditions for the formation of the composite thin-film for the maximal encapsulation and release of the drug-mimicking protein at the lowest possible potential.
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Affiliation(s)
- Zhiyuan Jin
- Department of Chemistry and Biomolecular Science, and NanoBio Laboratory (NABLAB), Clarkson University, Potsdam, New York 13699-5810, USA
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24
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Muro S. New biotechnological and nanomedicine strategies for treatment of lysosomal storage disorders. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2010; 2:189-204. [PMID: 20112244 PMCID: PMC4002210 DOI: 10.1002/wnan.73] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This review discusses the multiple bio- and nanotechnological strategies developed in the last few decades for treatment of a group of fatal genetic diseases termed lysosomal storage disorders. Some basic foundation on the biomedical causes and social and clinical relevance of these diseases is provided. Several treatment modalities, from those currently available to novel therapeutic approaches under development, are also discussed; these include gene and cell therapies, substrate reduction therapy, chemical chaperones, enzyme replacement therapy, multifunctional chimeras, targeting strategies, and drug carrier approaches.
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Affiliation(s)
- Silvia Muro
- Center for Biosystems Research, University of Maryland Biotechnology Institute, College Park, MD 20742, USA.
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Tan H, Huang D, Lao L, Gao C. RGD modified PLGA/gelatin microspheres as microcarriers for chondrocyte delivery. J Biomed Mater Res B Appl Biomater 2009; 91:228-38. [PMID: 19388090 DOI: 10.1002/jbm.b.31394] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Poly(lactide-co-glycotide) (PLGA)/gelatin composite microspheres were prepared by an emulsion solvent evaporation technique. RGDS peptides were further immobilized under the catalyzation of water soluble carbodiimide (EDAC). Confocal laser scanning microscopy and transmission electron microscopy revealed that the gelatin was entrapped in the PLGA/gelatin microspheres with a manner of separated domains. The contents of the entrapped gelatin and immobilized RGDS peptides were quantified as 0.9 mg/20 mg and approximately 2.1 microg/20 mg microspheres by hydroxyproline analysis and bicinchoninic acid protein assay, respectively. Moreover, difference in morphology of PLGA, PLGA/gelatin and RGDS modified PLGA/gelatin (PLGA/gelatin-RGDS) microspheres was observed by scanning electron microscopy. The PLGA/gelatin and PLGA/gelatin-RGDS microspheres lost their weight rapidly in PBS, but slowly in DMEM/fetal bovine serum. Rabbit auricular chondrocytes were seeded onto the microspheres in vitro to assess their biological performance and applicability as cell carriers. Results show that amongst the PLGA, PLGA/gelatin and PLGA/gelatin-RGDS microspheres, the latter ones have the best performance in terms of chondrocyte attachment, proliferation, viability and sulfated glycosaminoglycans secretion.
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Affiliation(s)
- Huaping Tan
- Key Laboratory of Macromolecular Synthesis and Functionalization, Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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Fuji T, Anada T, Honda Y, Shiwaku Y, Koike H, Kamakura S, Sasaki K, Suzuki O. Octacalcium Phosphate–Precipitated Alginate Scaffold for Bone Regeneration. Tissue Eng Part A 2009; 15:3525-35. [DOI: 10.1089/ten.tea.2009.0048] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Takeshi Fuji
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Takahisa Anada
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Yoshitomo Honda
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Yukari Shiwaku
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Hiroko Koike
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
- Division of Orthodontics and Dentofacial Orthopedics, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Shinji Kamakura
- Division of Bone Regenerative Engineering, Department of Regenerative Biomedical Engineering, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan
| | - Keiichi Sasaki
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Osamu Suzuki
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
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Zielhuis SW, Seppenwoolde JH, Bakker CJG, Jahnz U, Zonnenberg BA, van het Schip AD, Hennink WE, Nijsen JFW. Characterization of holmium loaded alginate microspheres for multimodality imaging and therapeutic applications. J Biomed Mater Res A 2007; 82:892-8. [PMID: 17335019 DOI: 10.1002/jbm.a.31183] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
In this paper the preparation and characterization of holmium-loaded alginate microspheres is described. The rapid development of medical imaging techniques offers new opportunities for the visualisation of (drug-loaded) microparticles. Therefore, suitable imaging agents have to be incorporated into these particles. For this reason, the element holmium was used in this study in order to utilize its unique imaging characteristics. The paramagnetic behaviour of this element allows visualisation with MRI and holmium can also be neutron-activated resulting in the emission of gamma-radiation, allowing visualisation with gamma cameras, and beta-radiation, suitable for therapeutic applications. Almost monodisperse alginate microspheres were obtained by JetCutter technology where alginate droplets of a uniform size were hardened in an aqueous holmium chloride solution. Ho(3+) binds via electrostatic interactions to the carboxylate groups of the alginate polymer and as a result alginate microspheres loaded with holmium were obtained. The microspheres had a mean size of 159 microm and a holmium loading of 1.3 +/- 0.1% (w/w) (corresponding with a holmium content based on dry alginate of 18.3 +/- 0.3% (w/w)). The binding capacity of the alginate polymer for Ho(3+) (expressed in molar amounts) is equal to that for Ca(2+), which is commonly used for the hardening of alginate. This indicates that Ho(3+) has the same binding affinity as Ca(2+). In line herewith, dynamic mechanical analyses demonstrated that alginate gels hardened with Ca(2+) or Ho(3+) had similar viscoelastic properties. The MRI relaxation properties of the microspheres were determined by a MRI phantom experiment, demonstrating a strong R(2)* effect of the particles. Alginate microspheres could also be labelled with radioactive holmium by adding holmium-166 to alginate microspheres, previously hardened with calcium (labelling efficiency 96%). The labelled microspheres had a high radiochemical stability (94% after 48 h incubation in human serum), allowing therapeutic applications for treatment of cancer. The potential in vivo application of the microspheres for a MR-guided renal embolization procedure was illustrated by selective administration of microspheres to the left kidney of a pig. Anatomic MR-imaging showed the presence of holmium-loaded microspheres in the kidney. In conclusion, this study demonstrates that the incorporation of holmium into alginate microspheres allows their visualisation with a gamma camera and MRI. Holmium-loaded alginate microspheres can be used therapeutically for embolization and, when radioactive, for local radiotherapy of tumours.
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Affiliation(s)
- S W Zielhuis
- Department of Nuclear Medicine, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
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Green DW, Mann S, Oreffo ROC. Mineralized polysaccharide capsules as biomimetic microenvironments for cell, gene and growth factor delivery in tissue engineering. SOFT MATTER 2006; 2:732-737. [PMID: 32680213 DOI: 10.1039/b604786f] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This paper presents an overview of our recent studies on mineralized polysaccharide capsules and their potential as multifunctional scaffolds for the organisation and delivery of human cell types, DNA and growth factors. Microcapsules containing these encapsulates are readily produced at room temperature in the form of alginate beads that are stabilized by an outer shell consisting of an ultra thin chitosan-calcium phosphate membrane. Modulation of the shell thickness and composition influences the rates of release and diffusion of encapsulated cells, growth factors and genes to produce microcapsules with tailored spatial and temporal properties that offer significant potential as novel biomimetic delivery systems in tissue engineering applications such as skeletal tissue repair and regeneration. We demonstrate the use of mineralized microcapsules to enable regeneration from encapsulated human mesenchymal populations, functional quantities of growth factor capture, and gene transfection. Significantly, we highlight the ability to fabricate integrated capsules consisting of spatially separated multiple components in nested combination that may provide phased temporal release of appropriate growth factors, analogous to the natural regeneration process.
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Affiliation(s)
- David W Green
- Bone & Joint Group, Developmental Origins of Health & Disease, University of Southampton, UK.
| | - Stephen Mann
- School of Chemistry, University of Bristol, Bristol BS8 1TS, UK.
| | - Richard O C Oreffo
- Bone & Joint Group, Developmental Origins of Health & Disease, University of Southampton, UK.
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Lamghari M, Barrias CC, Sá Miranda C, Barbosa MA. Recombinant glucocerebrosidase uptake by Gaucher disease human osteoblast culture model. Blood Cells Mol Dis 2005; 35:348-54. [PMID: 16125984 DOI: 10.1016/j.bcmd.2005.07.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2005] [Revised: 07/13/2005] [Accepted: 07/13/2005] [Indexed: 11/18/2022]
Abstract
Bone lesions are a major cause of morbidity in Gaucher disease (GD) type I. Enzyme replacement therapy (ERT) has been successful in treating many symptoms of type I GD but skeletal response lags behind. Local exogenous glucocerebrosidase supplementation in bone lesions via a drug delivery system may overcome this limitation. Although local enzyme supplementation aims to target lipid-engorged macrophages (Gaucher Cells) in bone compartment, enzyme uptake by osteoblasts is not excluded. To investigate the ability of human osteoblasts to internalize recombinant glucocerebrosidase (rGCR), we have used an artificial GD human osteoblasts cell culture system. MG63 human osteoblasts were treated with conduritol B epoxide (CBE) to induce complete and prolonged inhibition of endogenous glucocerebrosidase activity of cells. rGCR uptake by glucocerebrosidase-inactivated osteoblasts was examined using (125)I-radiolabelling, Western blot analysis and measurement of glucocerebrosidase activity. Analysis of radiolabeled enzyme uptake by CBE treated osteoblasts showed 67.9% of internalized protein in cell extract. Enzyme internalization was also observed by Western blot analysis where the amount of mature form of glucocerebrosidase protein recognized by the glucocerebrosidase antibody was increased following the administrations of rGCR. Moreover, enzymatic activity measurement showed 23.9% of glucocerebrosidase activity of control cells. The rGCR internalization by MG63 osteoblast seems to be partially mediated by mannose receptors. These data provide evidence that MG63 human osteoblasts are able to internalize rGCR.
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Affiliation(s)
- M Lamghari
- INEB-Instituto de Engenharia Biomédica, Laboratório de Biomateriais, R. Campo Alegre 823, 4150-180 Porto, Portugal.
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Barbosa M, Granja P, Barrias C, Amaral I. Polysaccharides as scaffolds for bone regeneration. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.rbmret.2005.04.006] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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