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Soltani Dehnavi S, Eivazi Zadeh Z, Harvey AR, Voelcker NH, Parish CL, Williams RJ, Elnathan R, Nisbet DR. Changing Fate: Reprogramming Cells via Engineered Nanoscale Delivery Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2108757. [PMID: 35396884 DOI: 10.1002/adma.202108757] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 04/02/2022] [Indexed: 06/14/2023]
Abstract
The incorporation of nanotechnology in regenerative medicine is at the nexus of fundamental innovations and early-stage breakthroughs, enabling exciting biomedical advances. One of the most exciting recent developments is the use of nanoscale constructs to influence the fate of cells, which are the basic building blocks of healthy function. Appropriate cell types can be effectively manipulated by direct cell reprogramming; a robust technique to manipulate cellular function and fate, underpinning burgeoning advances in drug delivery systems, regenerative medicine, and disease remodeling. Individual transcription factors, or combinations thereof, can be introduced into cells using both viral and nonviral delivery systems. Existing approaches have inherent limitations. Viral-based tools include issues of viral integration into the genome of the cells, the propensity for uncontrollable silencing, reduced copy potential and cell specificity, and neutralization via the immune response. Current nonviral cell reprogramming tools generally suffer from inferior expression efficiency. Nanomaterials are increasingly being explored to address these challenges and improve the efficacy of both viral and nonviral delivery because of their unique properties such as small size and high surface area. This review presents the state-of-the-art research in cell reprogramming, focused on recent breakthroughs in the deployment of nanomaterials as cell reprogramming delivery tools.
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Affiliation(s)
- Shiva Soltani Dehnavi
- ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, ANU College of Health & Medicine, Canberra, ACT, 2601, Australia
- Research School of Chemistry, ANU College of Science, Canberra, ACT, 2601, Australia
- ANU College of Engineering & Computer Science, Canberra, ACT, 2601, Australia
| | - Zahra Eivazi Zadeh
- Biomedical Engineering Department, Amirkabir University of Technology, Tehran, 15875-4413, Iran
- The Graeme Clark Institute, The University of Melbourne, Melbourne, VIC, 3010, Australia
- Department of Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Alan R Harvey
- School of Human Sciences, The University of Western Australia, and Perron Institute for Neurological and Translational Science, Perth, WA, 6009, Australia
| | - Nicolas H Voelcker
- Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, 151 Wellington Road, Clayton, VIC, 3168, Australia
- CSIRO Manufacturing, Bayview Avenue, Clayton, VIC, 3168, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Melbourne, VIC, 3010, Australia
| | - Richard J Williams
- iMPACT, School of Medicine, Deakin University, Waurn Ponds, VIC, 3216, Australia
| | - Roey Elnathan
- Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, 151 Wellington Road, Clayton, VIC, 3168, Australia
- CSIRO Manufacturing, Bayview Avenue, Clayton, VIC, 3168, Australia
- iMPACT, School of Medicine, Deakin University, Waurn Ponds, VIC, 3216, Australia
| | - David R Nisbet
- ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, ANU College of Health & Medicine, Canberra, ACT, 2601, Australia
- Research School of Chemistry, ANU College of Science, Canberra, ACT, 2601, Australia
- The Graeme Clark Institute, The University of Melbourne, Melbourne, VIC, 3010, Australia
- Department of Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Melbourne, VIC, 3010, Australia
- Melbourne Medical School, Faculty of Medicine, Dentistry and Health Science, The University of Melbourne, Melbourne, VIC, 3010, Australia
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Kasala D, Hong J, Yun CO. Overcoming the barriers to optimization of adenovirus delivery using biomaterials: Current status and future perspective. J Control Release 2021; 332:285-300. [PMID: 33626335 DOI: 10.1016/j.jconrel.2021.02.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 01/28/2021] [Accepted: 02/16/2021] [Indexed: 12/31/2022]
Abstract
Adenovirus (Ad) is emerging as a promising modality for cancer gene therapy due to its ability to induce high level of therapeutic transgene expression with no risk of insertional mutagenesis, ability to be facilely produced at a high titer, and capacity to induce robust antitumor immune response. Despite these excellent attributes of human serotype 5 Ad, poor systemic administration capability, coxsackie and adenovirus receptor (CAR)-dependent endocytic mechanism limiting potentially targetable cell types, nonspecific shedding to normal organs, and poor viral persistence in tumor tissues are major hindrances toward maximizing the therapeutic benefit of Ad in clinical setting. To address the abovementioned shortcomings, various non-immunogenic nanomaterials have been explored to modify Ad surface via physical or chemical interactions. In this review, we summarize the recent developments of different types of nanomaterials that had been utilized for modification of Ad and how tumor-targeted local and system delivery can be achieved with these nanocomplexes. Finally, we conclude by highlighting the key features of various nanomaterials-coated Ads and their prospects to optimize the delivery of virus.
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Affiliation(s)
- Dayananda Kasala
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - JinWoo Hong
- GeneMedicine Co., Ltd, Seoul 04763, Republic of Korea
| | - Chae-Ok Yun
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea; Institute of Nano Science and Technology (INST), Hanyang University, Seoul 04763, Republic of Korea; GeneMedicine Co., Ltd, Seoul 04763, Republic of Korea.
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Wang Y, Bruggeman KF, Franks S, Gautam V, Hodgetts SI, Harvey AR, Williams RJ, Nisbet DR. Is Viral Vector Gene Delivery More Effective Using Biomaterials? Adv Healthc Mater 2021; 10:e2001238. [PMID: 33191667 DOI: 10.1002/adhm.202001238] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 10/03/2020] [Indexed: 12/16/2022]
Abstract
Gene delivery has been extensively investigated for introducing foreign genetic material into cells to promote expression of therapeutic proteins or to silence relevant genes. This approach can regulate genetic or epigenetic disorders, offering an attractive alternative to pharmacological therapy or invasive protein delivery options. However, the exciting potential of viral gene therapy has yet to be fully realized, with a number of clinical trials failing to deliver optimal therapeutic outcomes. Reasons for this include difficulty in achieving localized delivery, and subsequently lower efficacy at the target site, as well as poor or inconsistent transduction efficiency. Thus, ongoing efforts are focused on improving local viral delivery and enhancing its efficiency. Recently, biomaterials have been exploited as an option for more controlled, targeted and programmable gene delivery. There is a growing body of literature demonstrating the efficacy of biomaterials and their potential advantages over other delivery strategies. This review explores current limitations of gene delivery and the progress of biomaterial-mediated gene delivery. The combination of biomaterials and gene vectors holds the potential to surmount major challenges, including the uncontrolled release of viral vectors with random delivery duration, poorly localized viral delivery with associated off-target effects, limited viral tropism, and immune safety concerns.
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Affiliation(s)
- Yi Wang
- Laboratory of Advanced Biomaterials Research School of Engineering The Australian National University Canberra ACT 2601 Australia
| | - Kiara F. Bruggeman
- Laboratory of Advanced Biomaterials Research School of Engineering The Australian National University Canberra ACT 2601 Australia
| | - Stephanie Franks
- Laboratory of Advanced Biomaterials Research School of Engineering The Australian National University Canberra ACT 2601 Australia
| | - Vini Gautam
- Department of Biomedical Engineering The University of Melbourne Melbourne Victoria 3010 Australia
| | - Stuart I. Hodgetts
- School of Human Sciences The University of Western Australia Perth WA 6009 Australia
- Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
| | - Alan R. Harvey
- School of Human Sciences The University of Western Australia Perth WA 6009 Australia
- Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
| | - Richard J. Williams
- The Institute for Mental and Physical Health and Clinical Translation (IMPACT) School of Medicine Deakin University Waurn Ponds VIC 3216 Australia
- Biofab3D St. Vincent's Hospital Fitzroy 3065 Australia
| | - David R. Nisbet
- Laboratory of Advanced Biomaterials Research School of Engineering The Australian National University Canberra ACT 2601 Australia
- Biofab3D St. Vincent's Hospital Fitzroy 3065 Australia
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Sun Y, Lv X, Ding P, Wang L, Sun Y, Li S, Zhang H, Gao Z. Exploring the functions of polymers in adenovirus-mediated gene delivery: Evading immune response and redirecting tropism. Acta Biomater 2019; 97:93-104. [PMID: 31386928 DOI: 10.1016/j.actbio.2019.06.059] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/31/2019] [Accepted: 06/24/2019] [Indexed: 02/06/2023]
Abstract
Adenovirus (Ad) is a promising viral carrier in gene therapy because of its unique attribution. However, clinical applications of Ad vectors are currently restricted by their immunogenicity and broad native tropism. To address these obstacles, a variety of nonimmunogenic polymers are utilized to modify Ad vectors chemically or physically. In this review, we systemically discuss the functions of polymers in Ad-mediated gene delivery from two aspects: evading the host immune responses to Ads and redirecting Ad tropism. With polyethylene glycol (PEG) first in order, a variety of polymers have been developed to shield the surface of Ad vectors and well accomplished to evade the host immune response, block CAR-dependant cellular uptake, and reduce accumulation in the liver. In addition, shielding Ad vectors with targeted polymers (including targeting ligand-conjugated polymers and bio-responsive polymers) can also efficiently retarget Ad vectors to tumor tissues and reduce their distribution in nontargeted tissues. With its potential to evade the immune response and retarget Ad vectors, modification with polymers has been generally regarded as a promising strategy to facilitate the clinical applications of Ad vectors for virotherapy. STATEMENT OF SIGNIFICANCE: There is no doubt that Adenovirus (Ads) are attractive vectors for gene therapy, with high sophistication and effectiveness in overcoming both extra- and intracellular barriers, which cannot be exceeded by any other nonviral gene vectors. Unfortunately, their clinical applications are still restricted by some critical hurdles, including immunogenicity and native broad tropism. Therefore, a variety of elegant strategies have been developed from various angles to address these hurdles. Among these various strategies, coating Ads with nonimmunogenic polymers has attracted much attention. In this review, we systemically discuss the functions of polymers in Ad-mediated gene delivery from two aspects: evading the host immune responses to Ads and redirecting Ad tropism. In addition, the key factors in Ad modification with polymers have been highlighted and summarized to provide guiding theory for the design of more effective and safer polymer-Ad hybrid gene vectors.
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Affiliation(s)
- Yanping Sun
- Department of Pharmacy, Hebei University of Science and Technology, Shijiazhuang 050018, China; State Key Laboratory Breeding Base - Hebei Province Key Laboratory of Molecular Chemistry for Drugs, Hebei University of Science and Technology, Shijiazhuang 050018, China; Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Xiaoqian Lv
- Department of Pharmacy, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Pingtian Ding
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Long Wang
- State Key Laboratory Breeding Base - Hebei Province Key Laboratory of Molecular Chemistry for Drugs, Hebei University of Science and Technology, Shijiazhuang 050018, China; Department of Family and Consumer Sciences, California State University, Long Beach, CA 90840, USA
| | - Yongjun Sun
- Department of Pharmacy, Hebei University of Science and Technology, Shijiazhuang 050018, China; Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Shuo Li
- State Key Laboratory Breeding Base - Hebei Province Key Laboratory of Molecular Chemistry for Drugs, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Huimin Zhang
- State Key Laboratory Breeding Base - Hebei Province Key Laboratory of Molecular Chemistry for Drugs, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Zibin Gao
- Department of Pharmacy, Hebei University of Science and Technology, Shijiazhuang 050018, China; State Key Laboratory Breeding Base - Hebei Province Key Laboratory of Molecular Chemistry for Drugs, Hebei University of Science and Technology, Shijiazhuang 050018, China; Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China.
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Rey-Rico A, Cucchiarini M. Supramolecular Cyclodextrin-Based Hydrogels for Controlled Gene Delivery. Polymers (Basel) 2019; 11:polym11030514. [PMID: 30960498 PMCID: PMC6473339 DOI: 10.3390/polym11030514] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 03/15/2019] [Accepted: 03/17/2019] [Indexed: 12/27/2022] Open
Abstract
Controlled delivery of gene transfer vectors is a powerful strategy to enhance the temporal and spatial presentation of therapeutic agents in a defined target. Hydrogels are adapted biomaterials for gene delivery capable of acting as a localized depot of genes while maintaining the long term local availability of DNA vectors at a specific location. Supramolecular hydrogels based on cyclodextrins (CDs) have attracted considerable attention as potential biomaterials in a broad range of drug delivery applications. Their unique characteristics of thixotropicity and low cytotoxicity due to their production under mild conditions make them potential candidates to form injectable delivery systems. This work aims to provide an overview of the use of CD-based polypseudorotaxane hydrogels as controlled gene delivery systems for different applications in regenerative medicine.
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Affiliation(s)
- Ana Rey-Rico
- Cell Therapy and Regenerative Medicine Unit, Centro de Investigacións Científicas Avanzadas (CICA), Universidade da Coruña, Campus de A Coruña, 15071 A Coruña, Spain.
| | - Magali Cucchiarini
- Center of Experimental Orthopaedics, Saarland University Medical Center, D-66421 Homburg/Saar, Germany.
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Abstract
Polymeric matrices inherently protect viral vectors from pre-existing immune conditions, limit dissemination to off-target sites, and can sustain vector release. Advancing methodologies in development of particulate based vehicles have led to improved encapsulation of viral vectors. Polymeric delivery systems have contributed to increasing cellular transduction, responsive release mechanisms, cellular infiltration, and cellular signaling. Synthetic polymers are easily customizable, and are capable of balancing matrix retention with cellular infiltration. Natural polymers contain inherent biorecognizable motifs adding therapeutic efficacy to the incorporated viral vector. Recombinant polymers use highly conserved motifs to carefully engineer matrices, allowing for precise design including elements of vector retention and responsive release mechanisms. Composite polymer systems provide opportunities to create matrices with unique properties. Carefully designed matrices can control spatiotemporal release patterns that synergize with approaches in regenerative medicine and antitumor therapies.
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Affiliation(s)
- Douglas Steinhauff
- Utah Center for Nanomedicine , Nano Institute of Utah , 36 South Wasatch Drive , Salt Lake City , Utah 84112 , United States
| | - Hamidreza Ghandehari
- Utah Center for Nanomedicine , Nano Institute of Utah , 36 South Wasatch Drive , Salt Lake City , Utah 84112 , United States
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Salehi A, Larson RG. A transport model and constitutive equation for oppositely charged polyelectrolyte mixtures with application to layer-by-layer assembly. J Chem Phys 2018; 149:194901. [PMID: 30466268 DOI: 10.1063/1.5051770] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
We develop a general framework for transport of polyions, solvent and salt, with intended application to Layer-by-Layer (LbL) assembly of polyelectrolyte monolayers (PEMs). The formulation for the first time includes electrostatics, chemical potential gradients, and mechanical stress gradients as driving forces for mass transport. The general model allows all species to be mobile throughout the process and avoids the assumptions of stepwise instantaneous equilibrium and/or immobilized structures typical of previous approaches, while reducing to these models in appropriate limits. A simple constitutive equation is derived for a mixture of oppositely charged polyelectrolytes that accounts for network strand dilution and cross-chain ion pairing by appending reactive terms to the Smoluchowski probability diffusion equation for network strand end-to-end vectors. The resulting general framework encompasses the Poisson equation describing the electrostatic potential distribution, an osmotic pressure balance, a stress constitutive equation, and a generalized flux law of polymer transport. The computational domain is split into a PEM phase and an external solution phase with an appropriate boundary condition derived for the interface between the two. The mobile species (water and small salt ions) are taken to be in a state of dynamic equilibrium with their distributions enslaved to the perturbations in the two polyion compositions. The proposed model captures the swelling response of PEM films to external solutions. For the first time, we studied the effects of the temporal evolution of electrostatic and stress distribution on the rate of chain loss and absorption during rinsing and dipping of an idealized and arbitrarily selected and rigid brush layer into external solutions. The temporal evolution provides a kinetic basis for the ability of LbL films to grow under conditions that thermodynamics alone suggests would cause them to be washed away and to account for partial desorption during washing. The proposed transport framework constitutes a solid basis for eventual quantitative modeling of LbL assembly and transport in polyion networks more generally.
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Affiliation(s)
- Ali Salehi
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Ronald G Larson
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
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Rey-Rico A, Babicz H, Madry H, Concheiro A, Alvarez-Lorenzo C, Cucchiarini M. Supramolecular polypseudorotaxane gels for controlled delivery of rAAV vectors in human mesenchymal stem cells for regenerative medicine. Int J Pharm 2017; 531:492-503. [PMID: 28552768 DOI: 10.1016/j.ijpharm.2017.05.050] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 05/17/2017] [Accepted: 05/22/2017] [Indexed: 12/12/2022]
Abstract
The aim of this work was to investigate, for the first time, the possibility of using supramolecular polypseudorotaxane gels as scaffolds that can durably deliver rAAV vectors for applications in cartilage regeneration. Dispersions of Pluronic® F68 (PF68) or Tetronic® 908 (T908) containing either hyaluronic acid (HA) or chondroitin sulfate (CS) were prepared in PBS. Then, alpha-cyclodextrin (αCD) was added to some dispersions to form polypseudorotaxane gels. Polysaccharides and αCD reinforced the viscoelasticity of the gels, which could withstand autoclaving without changes. In vitro release of rAAV vectors and subsequent transduction of human mesenchymal stem cells (hMSCs) by rAAV vectors from the release medium and from gels in direct contact with the cells were investigated. Compared with free vectors, the gels provided higher levels of transgene expression. CS (or HA)/PF68/αCD gels rapidly released rAAV vectors while CS (or HA)/T908/αCD gels provided sustained release probably due to different interactions with the viral vectors. Incorporation of αCD into CS (or HA)/PF68 gels resulted on higher rAAV concentrations and sustained levels of transgene expression over time. HA increased the bioactivity and cytocompatibility of the gels, especially those based on T908. Overall, combining rAAV gene transfer with polypseudorotaxane gels may provide new, promising tools for human tissue engineering and regenerative medicine strategies.
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Affiliation(s)
- Ana Rey-Rico
- Center of Experimental Orthopaedics, Saarland University Medical Center, Homburg, Germany.
| | - Heiko Babicz
- Center of Experimental Orthopaedics, Saarland University Medical Center, Homburg, Germany
| | - Henning Madry
- Center of Experimental Orthopaedics, Saarland University Medical Center, Homburg, Germany; Department of Orthopaedics and Orthopaedic Surgery, Saarland University Medical Center, Homburg, Germany
| | - Angel Concheiro
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, R+DPharma Group (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15872 Santiago de Compostela, Spain
| | - Carmen Alvarez-Lorenzo
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, R+DPharma Group (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15872 Santiago de Compostela, Spain.
| | - Magali Cucchiarini
- Center of Experimental Orthopaedics, Saarland University Medical Center, Homburg, Germany
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Salehi A, Larson RG. A Molecular Thermodynamic Model of Complexation in Mixtures of Oppositely Charged Polyelectrolytes with Explicit Account of Charge Association/Dissociation. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01464] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Ali Salehi
- Department of Chemical
Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Ronald G. Larson
- Department of Chemical
Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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Rey-Rico A, Frisch J, Venkatesan JK, Schmitt G, Rial-Hermida I, Taboada P, Concheiro A, Madry H, Alvarez-Lorenzo C, Cucchiarini M. PEO-PPO-PEO Carriers for rAAV-Mediated Transduction of Human Articular Chondrocytes in Vitro and in a Human Osteochondral Defect Model. ACS APPLIED MATERIALS & INTERFACES 2016; 8:20600-20613. [PMID: 27404480 DOI: 10.1021/acsami.6b06509] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Gene therapy is an attractive strategy for the durable treatment of human osteoarthritis (OA), a gradual, irreversible joint disease. Gene carriers based on the small human adeno-associated virus (AAV) exhibit major efficacy in modifying damaged human articular cartilage in situ over extended periods of time. Yet, clinical application of recombinant AAV (rAAV) vectors remains complicated by the presence of neutralizing antibodies against viral capsid elements in a majority of patients. The goal of this study was to evaluate the feasibility of delivering rAAV vectors to human OA chondrocytes in vitro and in an experimental model of osteochondral defect via polymeric micelles to protect gene transfer from experimental neutralization. Interaction of rAAV with micelles of linear (poloxamer PF68) or X-shaped (poloxamine T908) poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO) copolymers (PEO-PPO-PEO micelles) was characterized by means of isothermal titration calorimetry. Micelle encapsulation allowed an increase in both the stability and bioactivity of rAAV vectors and promoted higher levels of safe transgene (lacZ) expression both in vitro and in experimental osteochondral defects compared with that of free vector treatment without detrimental effects on the biological activity of the cells or their phenotype. Remarkably, protection against antibody neutralization was also afforded when delivering rAAV via PEO-PPO-PEO micelles in all systems evaluated, especially when using T908. Altogether, these findings show the potential of PEO-PPO-PEO micelles as effective tools to improve current gene-based treatments for human OA.
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Affiliation(s)
- Ana Rey-Rico
- Center of Experimental Orthopaedics, Saarland University Medical Center , Homburg, Germany
| | - Janina Frisch
- Center of Experimental Orthopaedics, Saarland University Medical Center , Homburg, Germany
| | | | - Gertrud Schmitt
- Center of Experimental Orthopaedics, Saarland University Medical Center , Homburg, Germany
| | - Isabel Rial-Hermida
- Departamento de Farmacia y Tecnología Farmacéutica, R+DPharma Group (GI-1645), Facultad de Farmacia, Universidade de Santiago de Compostela , Santiago de Compostela, Spain
| | - Pablo Taboada
- Departamento de Física de la Materia Condensada, Facultad de Física, Universidade de Santiago de Compostela , Santiago de Compostela, Spain
| | - Angel Concheiro
- Departamento de Farmacia y Tecnología Farmacéutica, R+DPharma Group (GI-1645), Facultad de Farmacia, Universidade de Santiago de Compostela , Santiago de Compostela, Spain
| | - Henning Madry
- Center of Experimental Orthopaedics, Saarland University Medical Center , Homburg, Germany
- Department of Orthopaedics and Orthopaedic Surgery, Saarland University Medical Center , Homburg, Germany
| | - Carmen Alvarez-Lorenzo
- Departamento de Farmacia y Tecnología Farmacéutica, R+DPharma Group (GI-1645), Facultad de Farmacia, Universidade de Santiago de Compostela , Santiago de Compostela, Spain
| | - Magali Cucchiarini
- Center of Experimental Orthopaedics, Saarland University Medical Center , Homburg, Germany
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11
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Kasala D, Yoon AR, Hong J, Kim SW, Yun CO. Evolving lessons on nanomaterial-coated viral vectors for local and systemic gene therapy. Nanomedicine (Lond) 2016; 11:1689-713. [PMID: 27348247 DOI: 10.2217/nnm-2016-0060] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Viral vectors are promising gene carriers for cancer therapy. However, virus-mediated gene therapies have demonstrated insufficient therapeutic efficacy in clinical trials due to rapid dissemination to nontarget tissues and to the immunogenicity of viral vectors, resulting in poor retention at the disease locus and induction of adverse inflammatory responses in patients. Further, the limited tropism of viral vectors prevents efficient gene delivery to target tissues. In this regard, modification of the viral surface with nanomaterials is a promising strategy to augment vector accumulation at the target tissue, circumvent the host immune response, and avoid nonspecific interactions with the reticuloendothelial system or serum complement. In the present review, we discuss various chemical modification strategies to enhance the therapeutic efficacy of viral vectors delivered either locally or systemically. We conclude by highlighting the salient features of various nanomaterial-coated viral vectors and their prospects and directions for future research.
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Affiliation(s)
- Dayananda Kasala
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - A-Rum Yoon
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - Jinwoo Hong
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - Sung Wan Kim
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea.,Department of Pharmaceutics & Pharmaceutical Chemistry, Center for Controlled Chemical Delivery, University of Utah, Salt Lake City, UT 84112, USA
| | - Chae-Ok Yun
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
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12
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Guan Q, Sun S, Li X, Lv S, Xu T, Sun J, Feng W, Zhang L, Li Y. Preparation, in vitro and in vivo evaluation of mPEG-PLGA nanoparticles co-loaded with syringopicroside and hydroxytyrosol. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:24. [PMID: 26704541 DOI: 10.1007/s10856-015-5641-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 11/27/2015] [Indexed: 06/05/2023]
Abstract
This study investigated the therapeutic efficiency of monomethoxy polyethylene glycol-poly(lactic-co-glycolic acid) (mPEG-PLGA) co-loaded with syringopicroside and hydroxytyrosol as a drug with effective targeting and loading capacity as well as persistent circulation in vivo. The nanoparticles were prepared using a nanoprecipitation method with mPEG-PLGA as nano-carrier co-loaded with syringopicroside and hydroxytyrosol (SH-NPs). The parameters like in vivo pharmacokinetics, biodistribution in vivo, fluorescence in vivo endomicroscopy, and cellular uptake of SH-NPs were investigated. Results showed that the total encapsulation efficiency was 32.38 ± 2.76 %. Total drug loading was 12.01 ± 0.42 %, particle size was 91.70 ± 2.11 nm, polydispersity index was 0.22 ± 0.01, and zeta potential was -24.5 ± 1.16 mV for the optimized SH-NPs. The nanoparticle morphology was characterized using transmission electron microscopy, which indicated that the particles of SH-NPs were in uniformity within the nanosize range and of spherical core shell morphology. Drug release followed Higuchi kinetics. Compared with syringopicroside and hydroxytyrosol mixture (SH), SH-NPs produced drug concentrations that persisted for a significantly longer time in plasma following second-order kinetics. The nanoparticles moved gradually into the cell, thereby increasing the quantity. ALT, AST, and MDA levels were significantly lower on exposure to SH-NPs than in controls. SH-NPs could inhibit the proliferation of HepG2.2.15 cells and could be taken up by HepG2.2.15 cells. The results confirmed that syringopicroside and hydroxytyrosol can be loaded simultaneously into mPEG-PLGA nanoparticles. Using mPEG-PLGA as nano-carrier, sustained release, high distribution in the liver, and protective effects against hepatic injury were observed in comparison to SH.
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Affiliation(s)
- Qingxia Guan
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, 150000, China
| | - Shuang Sun
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, 150000, China
| | - Xiuyan Li
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, 150000, China
| | - Shaowa Lv
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, 150000, China
| | - Ting Xu
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, 150000, China
| | - Jialin Sun
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, 150000, China
| | - Wenjing Feng
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, 150000, China
| | - Liang Zhang
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, 150000, China
| | - Yongji Li
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, 150000, China.
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Díaz-Rodríguez P, Rey-Rico A, Madry H, Landin M, Cucchiarini M. Effective genetic modification and differentiation of hMSCs upon controlled release of rAAV vectors using alginate/poloxamer composite systems. Int J Pharm 2015; 496:614-26. [PMID: 26556623 DOI: 10.1016/j.ijpharm.2015.11.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 11/03/2015] [Accepted: 11/04/2015] [Indexed: 02/02/2023]
Abstract
Viral vectors are common tools in gene therapy to deliver foreign therapeutic sequences in a specific target population via their natural cellular entry mechanisms. Incorporating such vectors in implantable systems may provide strong alternatives to conventional gene transfer procedures. The goal of the present study was to generate different hydrogel structures based on alginate (AlgPH155) and poloxamer PF127 as new systems to encapsulate and release recombinant adeno-associated viral (rAAV) vectors. Inclusion of rAAV in such polymeric capsules revealed an influence of the hydrogel composition and crosslinking temperature upon the vector release profiles, with alginate (AlgPH155) structures showing the fastest release profiles early on while over time vector release was more effective from AlgPH155+PF127 [H] capsules crosslinked at a high temperature (50°C). Systems prepared at room temperature (AlgPH155+PF127 [C]) allowed instead to achieve a more controlled release profile. When tested for their ability to target human mesenchymal stem cells, the different systems led to high transduction efficiencies over time and to gene expression levels in the range of those achieved upon direct vector application, especially when using AlgPH155+PF127 [H]. No detrimental effects were reported on either cell viability or on the potential for chondrogenic differentiation. Inclusion of PF127 in the capsules was also capable of delaying undesirable hypertrophic cell differentiation. These findings are of promising value for the further development of viral vector controlled release strategies.
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Affiliation(s)
- P Díaz-Rodríguez
- Center of Experimental Orthopaedics, Saarland University Medical Center, Homburg/Saar, Germany; Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Santiago de Compostela, Spain
| | - A Rey-Rico
- Center of Experimental Orthopaedics, Saarland University Medical Center, Homburg/Saar, Germany
| | - H Madry
- Center of Experimental Orthopaedics, Saarland University Medical Center, Homburg/Saar, Germany; Department of Orthopaedic Surgery, Saarland University Medical Center, Homburg/Saar, Germany
| | - M Landin
- Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Santiago de Compostela, Spain
| | - M Cucchiarini
- Center of Experimental Orthopaedics, Saarland University Medical Center, Homburg/Saar, Germany.
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Rey-Rico A, Venkatesan JK, Frisch J, Schmitt G, Monge-Marcet A, Lopez-Chicon P, Mata A, Semino C, Madry H, Cucchiarini M. Effective and durable genetic modification of human mesenchymal stem cells via controlled release of rAAV vectors from self-assembling peptide hydrogels with a maintained differentiation potency. Acta Biomater 2015; 18:118-27. [PMID: 25712390 DOI: 10.1016/j.actbio.2015.02.013] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 02/09/2015] [Accepted: 02/13/2015] [Indexed: 10/24/2022]
Abstract
Controlling the release of recombinant adeno-associated virus (rAAV) vectors from biocompatible materials is a novel, attractive approach to increase the residence time and effectiveness of a gene carrier at a defined target site. Self-assembling peptides have an ability to form stable hydrogels and encapsulate cells upon exposure to physiological pH and ionic strength. Here, we examined the capacity of the peptide hydrogel RAD16-I in a pure (RAD) form or combined with hyaluronic acid (RAD-HA) to release rAAV vectors as a means to genetically modify primary human bone marrow-derived mesenchymal stem cells (hMSCs), a potent source of cells for regenerative medicine. Specifically, we demonstrate the ability of the systems to efficiently encapsulate and release rAAV vectors in a sustained, controlled manner for the effective transduction of hMSCs (up to 80%) without deleterious effects on cell viability (up to 100%) or on their potential for chondrogenic differentiation over time (up to 21days). The present study demonstrates that RAD16-I is an advantageous material with tunable properties to control the release of rAAV vectors as a promising tool to develop new, improved therapeutic approaches for tissue engineering in vivo.
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Moon CY, Choi JW, Kasala D, Jung SJ, Kim SW, Yun CO. Dual tumor targeting with pH-sensitive and bioreducible polymer-complexed oncolytic adenovirus. Biomaterials 2014; 41:53-68. [PMID: 25522965 DOI: 10.1016/j.biomaterials.2014.11.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 10/31/2014] [Accepted: 11/08/2014] [Indexed: 12/18/2022]
Abstract
Oncolytic adenoviruses (Ads) have shown great promise in cancer gene therapy but their efficacy has been compromised by potent immunological, biochemical, and specific tumor-targeting limitations. To take full advantage of the innate cancer-specific killing potency of oncolytic Ads but also exploit the subtleties of the tumor microenvironment, we have generated a pH-sensitive and bio-reducible polymer (PPCBA)-coated oncolytic Ad. Ad-PPCBA complexes showed higher cellular uptake at pH 6.0 than pH 7.4 in both high and low coxsackie and adenovirus receptor-(CAR)-expressing cells, thereby demonstrating Ad-PPCBA's ability to target the low pH hypoxic tumor microenvironment and overcome CAR dependence for target cell uptake. Endocytic mechanism studies indicated that Ad-PPCBA internalization is mediated by macropinocytosis instead of the CAR-dependent endocytic pathway that internalizes naked Ad. VEGF-specific shRNA-expressing oncolytic Ad complexed with PPCBA (RdB/shVEGF-PPCBA) elicited much more potent suppression of U87 human brain cancer cell VEGF gene expression in vitro, and human breast cancer MCF7 cell/Matrigel plug vascularization in a mouse model, when cancer cells had been previously infected at pH 6.0 versus pH 7.4. Moreover, intratumorally and intravenously injected RdB/shVEGF-PPCBA nanocomplexes elicited significantly higher therapeutic efficacy than naked virus in U87-tumor mouse xenograft models, reducing IL-6, ALT, and AST serum levels. These data demonstrated PPCBA's biocompatibility and capability to shield the Ad surface to prevent innate immune response against Ad after both intratumoral and systemic administration. Taken together, these results demonstrate that smart, tumor-specific, oncolytic Ad-PPCBA complexes can be exploited to treat both primary and metastatic tumors.
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Affiliation(s)
- Chang Yoon Moon
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - Joung-Woo Choi
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - Dayananda Kasala
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - Soo-Jung Jung
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - Sung Wan Kim
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea; Center for Controlled Chemical Delivery, Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT 84112, USA
| | - Chae-Ok Yun
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea.
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Kasala D, Choi JW, Kim SW, Yun CO. Utilizing adenovirus vectors for gene delivery in cancer. Expert Opin Drug Deliv 2014; 11:379-92. [PMID: 24392755 DOI: 10.1517/17425247.2014.874414] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Adenovirus (Ad) is a promising candidate vector for cancer gene therapy because of its unique characteristics, which include efficient infection, high loading capacity and lack of insertional mutagenesis. However, systemic administration of Ad is hampered by the host's immune response, hepatocytoxicity, short half-life of the vector and low accumulation at the target site. For these reasons, clinical applications of Ad are currently restricted. AREAS COVERED In this review, we focus on recent developments in Ad nanocomplex systems that improve the transduction and targeting efficacy of Ad vectors in cancer gene therapy. We discuss the development of different Ad delivery systems, including surface modification of Ad, smart Ad/nanohybrid systems and hydrogels for sustained release of Ad. EXPERT OPINION The fusion of bioengineering and biopharmaceutical technologies can provide solutions to the obstacles encountered during systemic delivery of Ads. The in vivo transgene expression efficiency of Ad nanocomplex systems is typically high, and animal tumor models demonstrate that systemic administration of these Ad complexes can arrest tumor growth. However, further optimization of these smart Ad nanocomplex systems is needed to increase their effectiveness and safety for clinical application in cancer gene therapy.
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Affiliation(s)
- Dayananda Kasala
- Hanyang University, College of Engineering, Department of Bioengineering , 17 Haengdang-dong, Seongdong-gu, Seoul , Republic of Korea +82 2 2220 0491 ; +82 2 2220 4850 ;
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Miralles M, Segura MM, Puig M, Bosch A, Chillon M. Efficient amplification of chimeric adenovirus 5/40S vectors carrying the short fiber protein of Ad40 in suspension cell cultures. PLoS One 2012; 7:e42073. [PMID: 22860056 PMCID: PMC3409147 DOI: 10.1371/journal.pone.0042073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Accepted: 07/02/2012] [Indexed: 01/20/2023] Open
Abstract
The human adenovirus 40 (Ad40) is a promising tool for gene therapy of intestinal diseases. Since the production of Ad40 in vitro is extremely inefficient, chimeric Adenovirus 5/40S vectors carrying the Ad40 short fiber on the Ad5 capsid have been developed. However, Ad5/40S productivity is low. We hypothesized that low productivity was a result of inefficient viral entry into producer cells during amplification. To this end, we have developed a production strategy based on using 211B cells (expressing Ad5 fiber) during amplification steps, while Ad5/40S infectivity is further improved by adding polybrene during infections. In addition, the optimal harvesting time was determined by evaluating the Ad5/40S viral cycle. The developed production strategy significantly reduces the number of amplification cycles and duration of the process. Finally, to further facilitate Ad5/40S production, 211B cells were adapted to suspension thus allowing to easily upscale the production process in bioreactors.
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Affiliation(s)
- Marta Miralles
- Center of Animal Biotechnology and Gene Therapy (CBATEG), and Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - María Mercedes Segura
- Center of Animal Biotechnology and Gene Therapy (CBATEG), and Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Meritxell Puig
- Center of Animal Biotechnology and Gene Therapy (CBATEG), and Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Assumpció Bosch
- Center of Animal Biotechnology and Gene Therapy (CBATEG), and Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Miguel Chillon
- Center of Animal Biotechnology and Gene Therapy (CBATEG), and Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Barcelona, Spain
- Institut Català de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
- * E-mail:
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Abstract
Endostar, a novel recombinant human endostatin, which was approved by the Chinese State Food and Drug Administration in 2005, has a broad spectrum of activity against solid tumors. In this study, we aimed to determine whether the anticancer effect of Endostar is increased by using a nanocarrier system. It is expected that the prolonged circulation of endostar will improve its anticancer activity. Endostar-loaded nanoparticles were prepared to improve controlled release of the drug in mice and rabbits, as well as its anticancer effects in mice with colon cancer. A protein release system could be exploited to act as a drug carrier. Nanoparticles were formulated from poly (ethylene glycol) modified poly (DL-lactide-co-glycolide) (PEG-PLGA) by a double emulsion technique. Physical and release characteristics of endostar-loaded nanoparticles in vitro were evaluated by transmission electron microscopy (TEM), photon correlation spectroscopy (PCS), and micro bicinchoninic acid protein assay. The pharmacokinetic parameters of endostar nanoparticles in rabbit and mice plasma were measured by enzyme-linked immunosorbent assay. Western blot was used to detect endostatin in different tissues. To study the effects of endostar-loaded nanoparticles in vivo, nude mice in which tumor cells HT-29 were implanted, were subsequently treated with endostar or endostar-loaded PEG-PLGA nanoparticles. Using TEM and PCS, endostar-loaded PEG-PLGA nanoparticles were found to have a spherical core-shell structure with a diameter of 169.56 ± 35.03 nm. Drug-loading capacity was 8.22% ± 2.35% and drug encapsulation was 80.17% ± 7.83%. Compared with endostar, endostar-loaded PEG-PLGA nanoparticles had a longer elimination half-life and lower peak concentration, caused slower growth of tumor cell xenografts, and prolonged tumor doubling times. The nanoparticles changed the pharmacokinetic characteristics of endostar in mice and rabbits, thereby reinforcing anticancer activity. In conclusion, PEG-PLGA nanoparticles are a feasible carrier for endostar. Endostar-loaded PEG-PLGA nanoparticles seem to have a better anticancer effect than conventional endostar. We believe that PEG-PLGA nanoparticles are an effective carrier for protein medicines.
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Affiliation(s)
- Sanyuan Hu
- Xiangya School of Medicine, Central South University, Changsha, Hunan Province, People's Republic of China
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Soininen P, Hanzlíková M, Paukkunen M, Lecklin A, Männistö PT, Raasmaja A. Sample purification improves the analysis of nonviral in vivo gene transfection. Plasmid 2010; 63:27-30. [DOI: 10.1016/j.plasmid.2009.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2009] [Revised: 09/14/2009] [Accepted: 09/15/2009] [Indexed: 10/20/2022]
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Preparation, characterization, in vivo and in vitro studies of arsenic trioxide Mg-Fe ferrite magnetic nanoparticles. Acta Pharmacol Sin 2009; 30:1688-93. [PMID: 19960013 DOI: 10.1038/aps.2009.158] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
AIM MgFe(2)O(4) magnetic nanoparticle composed of As(2)O(3) (As(2)O(3)-MNPs) were prepared and their in vitro and in vivo characteristics were studied. METHODS The solvent-displacement method was applied for preparation of the nanoparticle using Poly-D,L-lactic-co-glycolic acid(PLGA). The characteristics studies of the products included magnetic response, morphology (transmission electron microscopy and scanning electron microscopy), entrapment efficiency, drug loading, particle sizes, zeta potential, in vitro drug release and tissue magnetic targeting. Nanoparticle cytotoxicity to Saos-2 cells was investigated using the MTT assay. To guide the external magnetic field in the liver, the concentration of As(2)O(3) in the liver and kidney was measured using an atomic fluorescence spectrometer after injecting As(2)O(3)-MNPs into the caudal veins of mice. RESULTS The As(2)O(3)-MNPs were approximately spherical. The average diameter, drug loading, entrapment efficiency and zeta potential of As(2)O(3)-MNPs were 109.9 nm, 10.08%, 82.16%, and -14.33 mV, respectively. The specific saturation magnetism was 8.65 emu/g. In vivo, the concentration of As(2)O(3) in the liver was significantly higher than that in the non-magnetic group. While the concentration of As(2)O(3) in the kidney was lower than that in the non-magnetic group. The C(max) in liver tissue in the magnetic group was 30.65 microg/g, which was 4.17 times the drug concentration in the same group in kidney tissue (7.35 microg/g) and 2.88 times the concentration of drug (10.66 microg/g) in the liver tissue of the non-magnetic group. CONCLUSION The PLGA polymer-loaded magnetic nanoparticle composed of arsenic trioxide can be magnetically targeted well and applied in biomedicine.
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Mukherjee B, Santra K, Pattnaik G, Ghosh S. Preparation, characterization and in-vitro evaluation of sustained release protein-loaded nanoparticles based on biodegradable polymers. Int J Nanomedicine 2009; 3:487-96. [PMID: 19337417 PMCID: PMC2636584 DOI: 10.2147/ijn.s3938] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Controlled drug delivery technology of proteins/peptides from biodegradable nanoparticles has emerged as one of the eminent areas to overcome formulation associated problems of the macromolecules. The purpose of the present investigation was to develop protein-loaded nanoparticles using biodegradable polymer poly l-lactide-co-glycolidic acid (PLGA) with bovine serum albumin (BSA) as a model protein. Despite many studies available with PLGA-based protein-loaded nanoparticles, production know-how, process parameters, protein loading, duration of protein release, narrowing polydispersity of particles have not been investigated enough to scale up manufacturing of protein-loaded nanoparticles in formulations. Different process parameters such as protein/polymer ratio, homogenizing speed during emulsifications, particle surface morphology and surface charges, particle size analysis and in-vitro protein release were investigated. The in-vitro protein release study suggests that release profile of BSA from nanoparticles could be modulated by changing protein-polymer ratios and/or by varying homogenizing speed during multiple-emulsion preparation technique. The formulation prepared with protein-polymer ratio of 1:60 at 17,500 rpm gave maximum protein-loading, minimum polydispersion with maximally sustained protein release pattern, among the prepared formulations. Decreased (10,000 rpm) or enhanced (24,000 rpm) homogenizing speeds resulted in increased polydispersion with larger particles having no better protein-loading and -release profiles in the present study.
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Affiliation(s)
- Biswajit Mukherjee
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata, West Bengal, India.
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Immune barriers to successful gene therapy. Trends Mol Med 2009; 15:32-9. [DOI: 10.1016/j.molmed.2008.11.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2008] [Revised: 11/04/2008] [Accepted: 11/04/2008] [Indexed: 12/15/2022]
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