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Wang G, Han S, Lu Y. From Structure to Application: The Evolutionary Trajectory of Spherical Nucleic Acids. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2310026. [PMID: 38860348 DOI: 10.1002/smll.202310026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 05/09/2024] [Indexed: 06/12/2024]
Abstract
Since the proposal of the concept of spherical nucleic acids (SNAs) in 1996, numerous studies have focused on this topic and have achieved great advances. As a new delivery system for nucleic acids, SNAs have advantages over conventional deoxyribonucleic acid (DNA) nanostructures, including independence from transfection reagents, tolerance to nucleases, and lower immune reactions. The flexible structure of SNAs proves that various inorganic or organic materials can be used as the core, and different types of nucleic acids can be conjugated to realize diverse functions and achieve surprising and exciting outcomes. The special DNA nanostructures have been employed for immunomodulation, gene regulation, drug delivery, biosensing, and bioimaging. Despite the lack of rational design strategies, potential cytotoxicity, and structural defects of this technology, various successful examples demonstrate the bright and convincing future of SNAs in fields such as new materials, clinical practice, and pharmacy.
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Affiliation(s)
- Guijia Wang
- Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China
- Key Laboratory of Industrial Biocatalysis, Ministry of Education, Tsinghua University, Beijing, 100084, China
| | - Sanyang Han
- Institute of Biopharmaceutical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | - Yuan Lu
- Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China
- Key Laboratory of Industrial Biocatalysis, Ministry of Education, Tsinghua University, Beijing, 100084, China
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2
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Haidar LL, Bilek M, Akhavan B. Surface Bio-engineered Polymeric Nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310876. [PMID: 38396265 DOI: 10.1002/smll.202310876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 02/05/2024] [Indexed: 02/25/2024]
Abstract
Surface bio-engineering of polymeric nanoparticles (PNPs) has emerged as a cornerstone in contemporary biomedical research, presenting a transformative avenue that can revolutionize diagnostics, therapies, and drug delivery systems. The approach involves integrating bioactive elements on the surfaces of PNPs, aiming to provide them with functionalities to enable precise, targeted, and favorable interactions with biological components within cellular environments. However, the full potential of surface bio-engineered PNPs in biomedicine is hampered by obstacles, including precise control over surface modifications, stability in biological environments, and lasting targeted interactions with cells or tissues. Concerns like scalability, reproducibility, and long-term safety also impede translation to clinical practice. In this review, these challenges in the context of recent breakthroughs in developing surface-biofunctionalized PNPs for various applications, from biosensing and bioimaging to targeted delivery of therapeutics are discussed. Particular attention is given to bonding mechanisms that underlie the attachment of bioactive moieties to PNP surfaces. The stability and efficacy of surface-bioengineered PNPs are critically reviewed in disease detection, diagnostics, and treatment, both in vitro and in vivo settings. Insights into existing challenges and limitations impeding progress are provided, and a forward-looking discussion on the field's future is presented. The paper concludes with recommendations to accelerate the clinical translation of surface bio-engineered PNPs.
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Affiliation(s)
- Laura Libnan Haidar
- School of Physics, University of Sydney, Sydney, NSW, 2006, Australia
- The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Marcela Bilek
- School of Physics, University of Sydney, Sydney, NSW, 2006, Australia
- The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW, 2006, Australia
- School of Biomedical Engineering, University of Sydney, Sydney, NSW, 2006, Australia
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Behnam Akhavan
- School of Physics, University of Sydney, Sydney, NSW, 2006, Australia
- The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW, 2006, Australia
- School of Biomedical Engineering, University of Sydney, Sydney, NSW, 2006, Australia
- School of Engineering, University of Newcastle, Callaghan, NSW, 2308, Australia
- Hunter Medical Research Institute (HMRI), Precision Medicine Program, New Lambton Heights, NSW, 2305, Australia
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3
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Schiffmann N, Liang Y, Nemcovsky CE, Almogy M, Halperin-Sternfeld M, Gianneschi NC, Adler-Abramovich L, Rosen E. Enzyme-Responsive Nanoparticles for Dexamethasone Targeted Delivery to Treat Inflammation in Diabetes. Adv Healthc Mater 2023; 12:e2301053. [PMID: 37498238 DOI: 10.1002/adhm.202301053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 07/25/2023] [Indexed: 07/28/2023]
Abstract
Diabetes is a global epidemic accompanied by impaired wound healing and increased risk of persistent infections and resistance to standard treatments. Therefore, there is an immense need to develop novel methods to specifically target therapeutics to affected tissues and improve treatment efficacy. This study aims to use enzyme-responsive nanoparticles for the targeted delivery of an anti-inflammatory drug, dexamethasone, to treat inflammation in diabetes. These nanoparticles are assembled from fluorescently-labeled, dexamethasone-loaded peptide-polymer amphiphiles. The nanoparticles are injected in vivo, adjacent to labeled collagen membranes sub-periosteally implanted on the calvaria of diabetic rats. Following their implantation, collagen membrane resorption is linked to inflammation, especially in hyperglycemic individuals. The nanoparticles show strong and prolonged accumulation in inflamed tissue after undergoing a morphological switch into microscale aggregates. Significantly higher remaining collagen membrane area and less inflammatory cell infiltration are observed in responsive nanoparticles-treated rats, compared to control groups injected with free dexamethasone and non-responsive nanoparticles. These factors indicate improved therapeutic efficacy in inflammation reduction. These results demonstrate the potential use of enzyme-responsive nanoparticles as targeted delivery vehicles for the treatment of diabetic and other inflammatory wounds.
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Affiliation(s)
- Nathan Schiffmann
- Department of Oral Biology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Faculty of Medicine, and The Center for Nanoscience and Nanotechnology, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Yifei Liang
- Department of Chemistry, International Institute for Nanotechnology, Simpson-Querrey Institute, Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, 60208, USA
| | - Carlos E Nemcovsky
- Department of Periodontology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Michal Almogy
- Department of Periodontology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Michal Halperin-Sternfeld
- Department of Oral Biology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Faculty of Medicine, and The Center for Nanoscience and Nanotechnology, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Nathan C Gianneschi
- Department of Chemistry, International Institute for Nanotechnology, Simpson-Querrey Institute, Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, 60208, USA
- Department of Materials Science & Engineering, Department of Biomedical Engineering, Department of Pharmacology, Northwestern University, Evanston, IL, 60208, USA
| | - Lihi Adler-Abramovich
- Department of Oral Biology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Faculty of Medicine, and The Center for Nanoscience and Nanotechnology, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Eyal Rosen
- Department of Endodontology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel
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Sousa A, Borøy V, Bæverud A, Julin K, Bayer A, Strøm M, Johannessen M, Škalko-Basnet N, Obuobi S. Polymyxin B stabilized DNA micelles for sustained antibacterial and antibiofilm activity against P. aeruginosa. J Mater Chem B 2023; 11:7972-7985. [PMID: 37505112 DOI: 10.1039/d3tb00704a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Nucleic acid-based materials showcase an increasing potential for antimicrobial drug delivery. Although numerous reports on drug-loaded DNA nanoparticles outline their pivotal antibacterial activities, their potential as drug delivery systems against bacterial biofilms awaits further studies. Among different oligonucleotide structures, micellar nanocarriers derived from amphiphilic DNA strands are of particular interest due to their spontaneous self-assembly and high biocompatibility. However, their clinical use is hampered by structural instability upon cation depletion. In this work, we used a cationic amphiphilic antibiotic (polymyxin B) to stabilize DNA micelles destined to penetrate P. aeruginosa biofilms and exhibit antibacterial/antibiofilm properties. Our study highlights how the strong affinity of this antibiotic enhances the stability of the micelles and confirms that antibacterial activity of the novel micelles remains intact. Additionally, we show that PMB micelles can penetrate P. aeruginosa biofilms and impact their metabolic activity. Finally, PMB micelles were highly safe and biocompatible, highlighting their possible application against P. aeruginosa biofilm-colonized skin wounds.
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Affiliation(s)
- Alexandra Sousa
- Drug Transport and Delivery Research Group, Department of Pharmacy, UIT The Arctic University of Norway, Tromsø, Norway.
| | - Vegard Borøy
- Drug Transport and Delivery Research Group, Department of Pharmacy, UIT The Arctic University of Norway, Tromsø, Norway.
| | - Agnethe Bæverud
- Drug Transport and Delivery Research Group, Department of Pharmacy, UIT The Arctic University of Norway, Tromsø, Norway.
| | - Kjersti Julin
- Host Microbe Interaction Research Group, Department of Medical Biology, UIT The Arctic University of Norway, Tromsø, Norway
| | - Annette Bayer
- Department of Chemistry, University of Tromsø The Arctic University of Norway, Universitetsvegen 57, N-9037 Tromsø, Norway
| | - Morten Strøm
- Natural Products and Medicinal Chemistry Research Group, Department of Pharmacy, University of Tromsø The Arctic University of Norway, Universitetsvegen 57, N-9037 Tromsø, Norway
| | - Mona Johannessen
- Host Microbe Interaction Research Group, Department of Medical Biology, UIT The Arctic University of Norway, Tromsø, Norway
| | - Nataša Škalko-Basnet
- Drug Transport and Delivery Research Group, Department of Pharmacy, UIT The Arctic University of Norway, Tromsø, Norway.
| | - Sybil Obuobi
- Drug Transport and Delivery Research Group, Department of Pharmacy, UIT The Arctic University of Norway, Tromsø, Norway.
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Garcia-Guerra A, Ellerington R, Gaitzsch J, Bath J, Kye M, Varela MA, Battaglia G, Wood MJA, Manzano R, Rinaldi C, Turberfield AJ. A modular RNA delivery system comprising spherical nucleic acids built on endosome-escaping polymeric nanoparticles. NANOSCALE ADVANCES 2023; 5:2941-2949. [PMID: 37260495 PMCID: PMC10228346 DOI: 10.1039/d2na00846g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 04/04/2023] [Indexed: 06/02/2023]
Abstract
Nucleic acid therapeutics require delivery systems to reach their targets. Key challenges to be overcome include avoidance of accumulation in cells of the mononuclear phagocyte system and escape from the endosomal pathway. Spherical nucleic acids (SNAs), in which a gold nanoparticle supports a corona of oligonucleotides, are promising carriers for nucleic acids with valuable properties including nuclease resistance, sequence-specific loading and control of receptor-mediated endocytosis. However, SNAs accumulate in the endosomal pathway and are thus vulnerable to lysosomal degradation or recycling exocytosis. Here, an alternative SNA core based on diblock copolymer PMPC25-PDPA72 is investigated. This pH-sensitive polymer self-assembles into vesicles with an intrinsic ability to escape endosomes via osmotic shock triggered by acidification-induced disassembly. DNA oligos conjugated to PMPC25-PDPA72 molecules form vesicles, or polymersomes, with DNA coronae on luminal and external surfaces. Nucleic acid cargoes or nucleic acid-tagged targeting moieties can be attached by hybridization to the coronal DNA. These polymeric SNAs are used to deliver siRNA duplexes against C9orf72, a genetic target with therapeutic potential for amyotrophic lateral sclerosis, to motor neuron-like cells. By attaching a neuron-specific targeting peptide to the PSNA corona, effective knock-down is achieved at doses of 2 particles per cell.
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Affiliation(s)
- Antonio Garcia-Guerra
- Department of Physics, Clarendon Laboratory, University of Oxford Parks Road Oxford OX1 3PU UK
- Department of Paediatrics, University of Oxford Le Gros Clark Building, South Parks Road Oxford OX1 3QX UK
- Kavli Institute for Nanoscience Discovery, University of Oxford Dorothy Crowfoot Hodgkin Building, South Parks Road Oxford OX1 3QU UK +44-1865-272359
- Institute of Developmental and Regenerative Medicine (IDRM) IMS-Tetsuya Nakamura Building, Old Road Campus, Roosevelt Dr, Headington Oxford OX3 7TY UK +44-1865-272166
| | - Ruth Ellerington
- Department of Paediatrics, University of Oxford Le Gros Clark Building, South Parks Road Oxford OX1 3QX UK
- Institute of Developmental and Regenerative Medicine (IDRM) IMS-Tetsuya Nakamura Building, Old Road Campus, Roosevelt Dr, Headington Oxford OX3 7TY UK +44-1865-272166
| | - Jens Gaitzsch
- Department of Chemistry, University College London London WC1H 0AJ UK
- Leibniz Institute for Polymer Research Dresden Hohe Str. 6 01069 Dresden Germany
| | - Jonathan Bath
- Department of Physics, Clarendon Laboratory, University of Oxford Parks Road Oxford OX1 3PU UK
- Kavli Institute for Nanoscience Discovery, University of Oxford Dorothy Crowfoot Hodgkin Building, South Parks Road Oxford OX1 3QU UK +44-1865-272359
| | - Mahnseok Kye
- Department of Paediatrics, University of Oxford Le Gros Clark Building, South Parks Road Oxford OX1 3QX UK
- Institute of Developmental and Regenerative Medicine (IDRM) IMS-Tetsuya Nakamura Building, Old Road Campus, Roosevelt Dr, Headington Oxford OX3 7TY UK +44-1865-272166
| | - Miguel A Varela
- Department of Paediatrics, University of Oxford Le Gros Clark Building, South Parks Road Oxford OX1 3QX UK
- Institute of Developmental and Regenerative Medicine (IDRM) IMS-Tetsuya Nakamura Building, Old Road Campus, Roosevelt Dr, Headington Oxford OX3 7TY UK +44-1865-272166
| | - Giuseppe Battaglia
- Department of Chemistry, University College London London WC1H 0AJ UK
- Institute for Bioengineering of Catalonia, Barcelona Institute of Science and Technology Baldiri Reixac, 10-12 08028 Barcelona Spain
- Catalan Institution for Research and Advanced Studies Passeig de Lluís Companys, 23 08010 Barcelona Spain
| | - Matthew J A Wood
- Department of Paediatrics, University of Oxford Le Gros Clark Building, South Parks Road Oxford OX1 3QX UK
- Institute of Developmental and Regenerative Medicine (IDRM) IMS-Tetsuya Nakamura Building, Old Road Campus, Roosevelt Dr, Headington Oxford OX3 7TY UK +44-1865-272166
| | - Raquel Manzano
- Department of Paediatrics, University of Oxford Le Gros Clark Building, South Parks Road Oxford OX1 3QX UK
- Department of Anatomy, Embryology and Animal Genetics, University of Zaragoza Zaragoza 50013 Spain
| | - Carlo Rinaldi
- Department of Paediatrics, University of Oxford Le Gros Clark Building, South Parks Road Oxford OX1 3QX UK
- Institute of Developmental and Regenerative Medicine (IDRM) IMS-Tetsuya Nakamura Building, Old Road Campus, Roosevelt Dr, Headington Oxford OX3 7TY UK +44-1865-272166
| | - Andrew J Turberfield
- Department of Physics, Clarendon Laboratory, University of Oxford Parks Road Oxford OX1 3PU UK
- Kavli Institute for Nanoscience Discovery, University of Oxford Dorothy Crowfoot Hodgkin Building, South Parks Road Oxford OX1 3QU UK +44-1865-272359
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6
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Dimitrov E, Toncheva-Moncheva N, Doumanov JA, Mladenova K, Petrova S, Pispas S, Rangelov S. Three-Dimensional Nucleic Acid Nanostructures Based on Self-Assembled Polymer-Oligonucleotide Conjugates of Comblike and Coil-Comb Chain Architectures. Biomacromolecules 2023; 24:2213-2224. [PMID: 37014992 DOI: 10.1021/acs.biomac.3c00126] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2023]
Abstract
Spherical nucleic acids have emerged as a class of nanostructures, exhibiting a wide variety of properties, distinctly different from those of linear nucleic acids, and a plethora of applications in therapeutics and diagnostics. Herein, we report on preparation of 3D nucleic acid nanostructures, prepared by self-assembly of polymer-oligonucleotide conjugates. The latter are obtained by grafting multiple alkyne-functionalized oligonucleotide strands onto azide-modified homo-, block, and random (co)polymers of chloromethylstyrene via initiator-free click coupling chemistry to form conjugates of comblike and coil-comb chain architectures. The resulting conjugates are amphiphilic and form stable nanosized supramolecular structures in aqueous solution. The nanoconstructs are thoroughly investigated and a number of physical characteristics, in particular, molar mass, size, aggregation number, zeta potential, material density, number of oligonucleotide strands per particle, grafting density, and their relation to hallmark properties of spherical nucleic acids - biocompatibility, resistance against DNase I, cellular uptake without the need for transfection agents - are determined.
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Affiliation(s)
- Erik Dimitrov
- Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev St. 103A, 1113 Sofia, Bulgaria
| | - Natalia Toncheva-Moncheva
- Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev St. 103A, 1113 Sofia, Bulgaria
| | - Jordan A Doumanov
- Department of Biochemistry, Faculty of Biology, Sofia University ″St. Kliment Ohridski″ 8, Dragan Tsankov Blvd., 1164 Sofia, Bulgaria
| | - Kirilka Mladenova
- Department of Biochemistry, Faculty of Biology, Sofia University ″St. Kliment Ohridski″ 8, Dragan Tsankov Blvd., 1164 Sofia, Bulgaria
| | - Svetla Petrova
- Department of Biochemistry, Faculty of Biology, Sofia University ″St. Kliment Ohridski″ 8, Dragan Tsankov Blvd., 1164 Sofia, Bulgaria
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vass. Constantinou Ave., 116 35 Athens, Greece
| | - Stanislav Rangelov
- Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev St. 103A, 1113 Sofia, Bulgaria
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Development of highly-reproducible hydrogel based bioink for regeneration of skin-tissues via 3-D bioprinting technology. Int J Biol Macromol 2023; 230:123131. [PMID: 36610570 DOI: 10.1016/j.ijbiomac.2022.123131] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 12/28/2022] [Accepted: 12/31/2022] [Indexed: 01/06/2023]
Abstract
3-D Bioprinting is employed as a novel approach in biofabrication to promote skin regeneration following chronic-wounds and injury. A novel bioink composed of carbohydrazide crosslinked {polyethylene oxide-co- Chitosan-co- poly(methylmethacrylic-acid)} (PEO-CS-PMMA) laden with Nicotinamide and human dermal fibroblast was successfully synthesized via Free radical-copolymerization at 73 °C. The developed bioink was characterized in term of swelling, structural-confirmation by solid state 13C-Nuclear Magnetic Resonance (NMR), morphology, thermal, 3-D Bioprinting via extrusion, rheological and interaction with DNA respectively. The predominant rate of gelation was attributed to the electrostatic interactions between cationic CS and anionic PMMA pendant groups. The morphology of developed bioink presented a porous architecture satisfying the cell and growth-factor viability across the barrier. The thermal analysis revealed two-step degradation with 85 % weight loss in term of decomposition and molecular changes in the bioink moieties By applying low pressure in the range of 25-50 kPa, the optimum reproducibility and printability were determined at 37 °C in the viscosity range of 500-550 Pa. s. A higher survival rate of 92 % was observed for (PEO-CS-PMMA) in comparison to 67 % for pure chitosan built bioink. A binding constant of K ≈ 1.8 × 106 M-1 recognized a thermodynamically stable interaction of (PEO-CS-PMMA) with the Salmon-DNA. Further, the addition of PEO (5.0 %) was addressed with better self-healing and printability to produce skin-tissue constructs to replace the infected skin in human.
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8
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Dimitrov E, Toncheva-Moncheva N, Bakardzhiev P, Forys A, Doumanov J, Mladenova K, Petrova S, Trzebicka B, Rangelov S. Original Synthesis of a Nucleolipid for Preparation of Vesicular Spherical Nucleic Acids. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3645. [PMID: 36296836 PMCID: PMC9609631 DOI: 10.3390/nano12203645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/08/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
Spherical nucleic acids (SNAs)-nanostructures, consisting of a nanoparticle core densely functionalized with a shell of short oligonucleotide strands-are a rapidly emerging class of nanoparticle-based therapeutics with unique properties and specific applications as drug and nucleic acid delivery and gene regulation materials. In this contribution, we report on the preparation of hollow SNA nanoconstructs by co-assembly of an originally synthesized nucleolipid-a hybrid biomacromolecule, composed of a lipidic residue, covalently linked to a DNA oligonucleotide strand-with other lipids. The nucleolipid was synthesized via a click chemistry approach employing initiator-free, UV light-induced thiol-ene coupling of appropriately functionalized intermediates, performed in mild conditions using a custom-made UV light-emitting device. The SNA nanoconstructs were of a vesicular structure consisting of a self-closed bilayer membrane in which the nucleolipid was intercalated via its lipid-mimetic residue. They were in the lower nanometer size range, moderately negatively charged, and were found to carry thousands of oligonucleotide strands per particle, corresponding to a grafting density comparable to that of other SNA structures. The surface density of the strands on the bilayer implied that they adopted an unextended conformation. We demonstrated that preformed vesicular structures could be successfully loaded with either hydrophilic or hydrophobic dyes.
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Affiliation(s)
- Erik Dimitrov
- Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev St. 103A, 1113 Sofia, Bulgaria
| | - Natalia Toncheva-Moncheva
- Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev St. 103A, 1113 Sofia, Bulgaria
| | - Pavel Bakardzhiev
- Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev St. 103A, 1113 Sofia, Bulgaria
| | - Aleksander Forys
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Jordan Doumanov
- Department of Biochemistry, Faculty of Biology, Sofia University St. Kliment Ohridski, Dragan Tsankov Blvd. 8, 1164 Sofia, Bulgaria
| | - Kirilka Mladenova
- Department of Biochemistry, Faculty of Biology, Sofia University St. Kliment Ohridski, Dragan Tsankov Blvd. 8, 1164 Sofia, Bulgaria
| | - Svetla Petrova
- Department of Biochemistry, Faculty of Biology, Sofia University St. Kliment Ohridski, Dragan Tsankov Blvd. 8, 1164 Sofia, Bulgaria
| | - Barbara Trzebicka
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Stanislav Rangelov
- Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev St. 103A, 1113 Sofia, Bulgaria
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9
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Dimitrov E, Toncheva-Moncheva N, Bakardzhiev P, Forys A, Doumanov J, Mladenova K, Petrova S, Trzebicka B, Rangelov S. Nucleic acid-based supramolecular structures: vesicular spherical nucleic acids from a non-phospholipid nucleolipid. NANOSCALE ADVANCES 2022; 4:3793-3803. [PMID: 36133345 PMCID: PMC9470030 DOI: 10.1039/d2na00527a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 08/08/2022] [Indexed: 06/16/2023]
Abstract
Vesicular spherical nucleic acids are dynamic nucleic acid-based supramolecular structures that are held together via non-covalent bonds. They have promising applications as drug and nucleic acid delivery materials, diagnostic and imaging tools and platforms for development of various therapeutic schemes. In this contribution, we report on vesicular spherical nucleic acids, constructed from a non-phospholipid nucleolipid - an original hybrid biomacromolecule, composed of a hydrophobic residue, resembling that of the naturally occurring phospholipids, and a DNA oligonucleotide strand. The nucleolipid was synthesized by coupling of dibenzocyclooctyne-functionalized oligonucleotide and azidated 1,3-dihexadecyloxy-propane-2-ol via an azide-alkyne click reaction. In aqueous solution it spontaneously self-associated into nanosized supramolecular structures, identified as unilamellar vesicles composed of a self-closed interdigitated bilayer. Vesicular structures were also formed upon intercalation of the nucleolipid via its lipid-mimetic residue in the phospholipid bilayer membrane of liposomes prepared from readily available and FDA-approved lipids (1,2-dipalmitoyl-rac-glycero-3-phosphocholine and cholesterol). The vesicular structures are thoroughly investigated by light scattering (dynamic, static, and electrophoretic) and cryogenic TEM and the physical characteristics, in particular, number of strands per particle, grafting density, and conformation of the strands, were compared to those of reference spherical nucleic acids. Finally, the vesicular structures were shown to exhibit cellular internalization with no need of transfection agents and enhanced colloidal and nuclease stability.
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Affiliation(s)
- Erik Dimitrov
- Institute of Polymers, Bulgarian Academy of Sciences Akad. G. Bonchev St. 103A 1113 Sofia Bulgaria
| | | | - Pavel Bakardzhiev
- Institute of Polymers, Bulgarian Academy of Sciences Akad. G. Bonchev St. 103A 1113 Sofia Bulgaria
| | - Aleksander Forys
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences M. Curie-Sklodowskiej 34 Zabrze Poland
| | - Jordan Doumanov
- Department of Biochemistry, Faculty of Biology, Sofia University St. Kliment Ohridski Dragan Tsankov Blvd. 8 1164 Sofia Bulgaria
| | - Kirilka Mladenova
- Department of Biochemistry, Faculty of Biology, Sofia University St. Kliment Ohridski Dragan Tsankov Blvd. 8 1164 Sofia Bulgaria
| | - Svetla Petrova
- Department of Biochemistry, Faculty of Biology, Sofia University St. Kliment Ohridski Dragan Tsankov Blvd. 8 1164 Sofia Bulgaria
| | - Barbara Trzebicka
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences M. Curie-Sklodowskiej 34 Zabrze Poland
| | - Stanislav Rangelov
- Institute of Polymers, Bulgarian Academy of Sciences Akad. G. Bonchev St. 103A 1113 Sofia Bulgaria
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10
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Chen Y, Li W, Xing H. Chemistries and applications of DNA-natural product conjugate. Front Chem 2022; 10:984916. [PMID: 36147254 PMCID: PMC9489112 DOI: 10.3389/fchem.2022.984916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 08/04/2022] [Indexed: 11/22/2022] Open
Abstract
Natural products and their derivatives have made great contributions to chemotherapy, especially for the treatment of tumors and infections. Despite the achievements, natural product-based small molecule drugs usually suffer from side effects, short circulation time, and solubility issue. To overcome these drawbacks, a common approach is to integrate another bio-functional motif into a natural product compound, enabling targeted or synergistic therapy. One of the most promising strategies is to form a DNA-natural product conjugate to improve therapeutic purposes. The incorporated DNA molecules can serve as an aptamer, a nucleic-acid-based congener of antibody, to specifically bind to the disease target of interest, or function as a gene therapy agent, such as immuno-adjuvant or antisense, to enable synergistic chemo-gene therapy. DNA-natural product conjugate can also be incorporated into other DNA nanostructures to improve the administration and delivery of drugs. This minireview aims to provide the chemistry community with a brief overview on this emerging topic of DNA-natural product conjugates for advanced therapeutics. The basic concepts to use the conjugation, the commonly used robust conjugation chemistries, as well as applications in targeted therapy and synergistic therapy of using DNA-natural product conjugates, are highlighted in this minireview. Future perspectives and challenges of this field are also discussed in the discussion and perspective section.
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11
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Haladjova E, Petrova M, Ugrinova I, Forys A, Trzebicka B, Rangelov S. Hollow spherical nucleic acid structures based on polymer-coated phospholipid vesicles. SOFT MATTER 2022; 18:5426-5434. [PMID: 35819021 DOI: 10.1039/d2sm00355d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A feasible one pot synthesis of hollow spherical nucleic acids (SNAs) using phospholipid liposomes is reported. These constructs are synthesized in a chemically straightforward process involving formation of unilamellar liposomes, coating the liposomes with a thin cross-linked polymeric layer, and grafting the latter with short (about 20 bases) DNA oligonucleotide strands. They consist of vesicular cores, composed of readily available phospholipid (1,2-dipalmitoyl-sn-glycero-phosphocholine), whereas the strands are deliberately arranged on the surface of the vesicular entities. The initial vesicular structure and morphology are preserved during the coating and grafting reactions. The novel hollow/vesicular SNAs are characterized with a hydrodynamic radius and radius of gyration of 78.3 and 88.5 nm, respectively, and moderately negative (-14.2 mV) ζ potential. They carry thousands (5868) of oligonucleotide strands per vesicle, which are not strongly radially oriented and adopt an unextended conformation as anticipated from the smaller value of the grafting density compared to the critical grafting density at the transition to brush conformation. The constructs are practically devoid of toxicity and exhibit high binding affinity to complementary nucleic acids. Unlike any other nucleic acid structural motif, they cross the cell membrane and enter cells without the need of transfection agents.
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Affiliation(s)
- Emi Haladjova
- Institute of Polymers, Bulgarian Academy of Sciences, "Akad. G. Bonchev" St., Bl. 103-A, 1113 Sofia, Bulgaria.
| | - Maria Petrova
- Institute of Molecular Biology, Bulgarian Academy of Sciences, "Akad. G. Bonchev" St., Bl. 21, 1113 Sofia, Bulgaria
| | - Iva Ugrinova
- Institute of Molecular Biology, Bulgarian Academy of Sciences, "Akad. G. Bonchev" St., Bl. 21, 1113 Sofia, Bulgaria
| | - Aleksander Forys
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Marie Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Barbara Trzebicka
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Marie Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Stanislav Rangelov
- Institute of Polymers, Bulgarian Academy of Sciences, "Akad. G. Bonchev" St., Bl. 103-A, 1113 Sofia, Bulgaria.
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12
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Lu H, Cai J, Fang Y, Ren M, Tan X, Jia F, Wang D, Zhang K. Exploring the Structural Diversity of DNA Bottlebrush Polymers Using an Oligonucleotide Macromonomer Approach. Macromolecules 2022; 55:2235-2242. [PMID: 36187461 PMCID: PMC9521811 DOI: 10.1021/acs.macromol.1c02624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein, we demonstrate that macromonomers consisting of organics-soluble, chemically protected oligonucleotides (protDNA) and poly(ethylene glycol) (PEG) chains can be converted into bottlebrush polymers of distinct architectures via ring-opening metathesis polymerization (ROMP). Using a custom norbornene-containing phosphoramidite, two types of macromonomers were obtained: a linear norbornene-protDNA-PEG structure and a Y-shaped structure where the polymerizable norbornene group is situated at the junction where protDNA and PEG meet. With this strategy, the PEG chains can be placed either near the backbone of the bottlebrush or on its periphery, and in principle anywhere between these two extremes by adjusting the norbornene location, which makes this strategy attractive for constructing architecturally sophisticated oligonucleotide-containing copolymers.
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Affiliation(s)
- Hao Lu
- Departments of Chemistry and Chemical Biology, Bioengineering, and Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Jiansong Cai
- Departments of Chemistry and Chemical Biology, Bioengineering, and Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Yang Fang
- Departments of Chemistry and Chemical Biology, Bioengineering, and Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Mengqi Ren
- Departments of Chemistry and Chemical Biology, Bioengineering, and Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Xuyu Tan
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Fei Jia
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Dali Wang
- Departments of Chemistry and Chemical Biology, Bioengineering, and Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Ke Zhang
- Departments of Chemistry and Chemical Biology, Bioengineering, and Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
- Corresponding Author:
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13
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Fan Q, He Z, Xiong J, Chao J. Smart Drug Delivery Systems Based on DNA Nanotechnology. Chempluschem 2022; 87:e202100548. [PMID: 35233992 DOI: 10.1002/cplu.202100548] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 02/13/2022] [Indexed: 11/12/2022]
Abstract
The development of DNA nanotechnology has attracted tremendous attention in biotechnological and biomedical fields involving biosensing, bioimaging and disease therapy. In particular, precise control over size and shape, easy modification, excellent programmability and inherent homology make the sophisticated DNA nanostructures vital for constructing intelligent drug carriers. Recent advances in the design of multifunctional DNA-based drug delivery systems (DDSs) have demonstrated the effectiveness and advantages of DNA nanostructures, showing the unique benefits and great potential in enhancing the delivery of pharmaceutical compounds and reducing systemic toxicity. This Review aims to overview the latest researches on DNA nanotechnology-enabled nanomedicine and give a perspective on their future opportunities.
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Affiliation(s)
- Qin Fan
- Key Laboratory for Organic Electronics & Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) and School of Materials Science and Engineering, Nanjing University of Posts & Telecommunications, Nanjing, 210000, P. R. China
| | - Zhimei He
- Smart Health Big Data Analysis and Location Services Engineering Research Center of Jiangsu Province, School of Geographic and Biologic Information, Nanjing University of Posts & Telecommunications, Nanjing, 210000, P. R. China
| | - Jinxin Xiong
- Key Laboratory for Organic Electronics & Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) and School of Materials Science and Engineering, Nanjing University of Posts & Telecommunications, Nanjing, 210000, P. R. China
| | - Jie Chao
- Key Laboratory for Organic Electronics & Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) and School of Materials Science and Engineering, Nanjing University of Posts & Telecommunications, Nanjing, 210000, P. R. China
- Smart Health Big Data Analysis and Location Services Engineering Research Center of Jiangsu Province, School of Geographic and Biologic Information, Nanjing University of Posts & Telecommunications, Nanjing, 210000, P. R. China
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14
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Song Y, Song W, Lan X, Cai W, Jiang D. Spherical nucleic acids: Organized nucleotide aggregates as versatile nanomedicine. AGGREGATE (HOBOKEN, N.J.) 2022; 3:e120. [PMID: 35386748 PMCID: PMC8982904 DOI: 10.1002/agt2.120] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Spherical nucleic acids (SNAs) are composed of a nanoparticle core and a layer of densely arranged oligonucleotide shells. After the first report of SNA by Mirkin and coworkers in 1996, it has created a significant interest by offering new possibilities in the field of gene and drug delivery. The controlled aggregation of oligonucleotides on the surface of organic/inorganic nanoparticles improves the delivery of genes and nucleic acid-based drugs and alters and regulates the biological profiles of the nanoparticle core within living organisms. Here in this review, we present an overview of the recent progress of SNAs that has speeded up their biomedical application and their potential transition to clinical use. We start with introducing the concept and characteristics of SNAs as drug/gene delivery systems and highlight recent efforts of bioengineering SNA by imaging and treatmenting various diseases. Finally, we discuss potential challenges and opportunities of SNAs, their ongoing clinical trials, and future translation, and how they may affect the current landscape of clinical practices. We hope that this review will update our current understanding of SNA, organized oligonucleotide aggregates, for disease diagnosis and treatment.
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Affiliation(s)
- Yangmeihui Song
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Molecular Imaging, Wuhan, China
| | - Wenyu Song
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Molecular Imaging, Wuhan, China
| | - Xiaoli Lan
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Molecular Imaging, Wuhan, China
| | - Weibo Cai
- Departments of Radiology and Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Dawei Jiang
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Molecular Imaging, Wuhan, China
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15
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Whitfield C, Zhang M, Winterwerber P, Wu Y, Ng DYW, Weil T. Functional DNA-Polymer Conjugates. Chem Rev 2021; 121:11030-11084. [PMID: 33739829 PMCID: PMC8461608 DOI: 10.1021/acs.chemrev.0c01074] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Indexed: 02/07/2023]
Abstract
DNA nanotechnology has seen large developments over the last 30 years through the combination of solid phase synthesis and the discovery of DNA nanostructures. Solid phase synthesis has facilitated the availability of short DNA sequences and the expansion of the DNA toolbox to increase the chemical functionalities afforded on DNA, which in turn enabled the conception and synthesis of sophisticated and complex 2D and 3D nanostructures. In parallel, polymer science has developed several polymerization approaches to build di- and triblock copolymers bearing hydrophilic, hydrophobic, and amphiphilic properties. By bringing together these two emerging technologies, complementary properties of both materials have been explored; for example, the synthesis of amphiphilic DNA-polymer conjugates has enabled the production of several nanostructures, such as spherical and rod-like micelles. Through both the DNA and polymer parts, stimuli-responsiveness can be instilled. Nanostructures have consequently been developed with responsive structural changes to physical properties, such as pH and temperature, as well as short DNA through competitive complementary binding. These responsive changes have enabled the application of DNA-polymer conjugates in biomedical applications including drug delivery. This review discusses the progress of DNA-polymer conjugates, exploring the synthetic routes and state-of-the-art applications afforded through the combination of nucleic acids and synthetic polymers.
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Affiliation(s)
- Colette
J. Whitfield
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Meizhou Zhang
- Hubei
Key Laboratory of Bioinorganic Chemistry and Materia Medica, School
of Chemistry and Chemical Engineering, Huazhong
University of Science and Technology, Luoyu Road 1037, Hongshan, Wuhan 430074, People’s Republic of China
| | - Pia Winterwerber
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Yuzhou Wu
- Hubei
Key Laboratory of Bioinorganic Chemistry and Materia Medica, School
of Chemistry and Chemical Engineering, Huazhong
University of Science and Technology, Luoyu Road 1037, Hongshan, Wuhan 430074, People’s Republic of China
| | - David Y. W. Ng
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Tanja Weil
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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16
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Huang X, Blum NT, Lin J, Shi J, Zhang C, Huang P. Chemotherapeutic drug-DNA hybrid nanostructures for anti-tumor therapy. MATERIALS HORIZONS 2021; 8:78-101. [PMID: 34821291 DOI: 10.1039/d0mh00715c] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Compared to traditional drug delivery systems, DNA nanostructure-based drug delivery systems have several advantages including programmable sequences, precise size and shape, high drug payloads, excellent biocompatibility and biodegradability. To date, a wide range of chemotherapeutic drug-DNA hybrid nanostructures have been developed for anti-tumor therapy. In this review, the constructions of various DNA nanostructures for anticancer drug delivery are firstly summarized. Next, the anticancer drug loading methods for DNA nanostructures are presented. Then, the recent applications of chemotherapeutic drug-DNA hybrid nanostructures for drug delivery are highlighted. In the end, the challenges and opportunities of the chemotherapeutic drug-DNA hybrid nanostructure-based delivery system are discussed. The designs of drug-DNA hybrid systems, including the constructions of nanostructures and the strategies for drug loading, largely influence the efficiency of drug delivery. Recent studies have focused on the development of novel drug-DNA hybrid systems to acquire more precise and efficient therapy for various diseases. A systematic review of the design strategies of chemotherapeutic drug-DNA hybrid nanostructures will benefit the innovation and development of the chemotherapeutic drug-based chemotherapy in clinics.
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Affiliation(s)
- Xiangang Huang
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, 518060, China.
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17
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Yang L, Liang M, Cui C, Li X, Li L, Pan X, Yazd HS, Hong M, Lu J, Cao YC, Tan W. Enhancing the Nucleolytic Resistance and Bioactivity of Functional Nucleic Acids by Diverse Nanostructures through in Situ Polymerization-Induced Self-assembly. Chembiochem 2020; 22:754-759. [PMID: 33051959 DOI: 10.1002/cbic.202000712] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Indexed: 01/02/2023]
Abstract
Functional nucleic acids (FNAs) are garnering tremendous interest owing to their high modularity and unique bioactivity. Three-dimensional FNAs have been developed to overcome the issues of nuclease degradation and limited cell uptake. We have developed a new facile approach to the synthesis of multiple three-dimensional FNA nanostructures by harnessing photo-polymerization-induced self-assembly. Sgc8 aptamer and CpG oligonucleotide were modified as macro chain-transfer reagents to mediate in situ polymerization and self-assembly. Diverse structures, including micelles, rods, and short worms, afford these two FNAs afford these two FNAs with higher nuclease resistance in serum serum, greater cellular uptake efficiency, and increased bioactivity.
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Affiliation(s)
- Lu Yang
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, UF Health Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, FL 32611-7200, USA
| | - Mingwei Liang
- Department of Biochemistry and Molecular Biology, UF Health Cancer Center, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Cheng Cui
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Life Sciences, Collaborative Innovation Center for Chemistry and Molecular Medicine, Hunan University, Changsha, 410082, P. R. China
| | - Xiaowei Li
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, UF Health Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, FL 32611-7200, USA
| | - Long Li
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, UF Health Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, FL 32611-7200, USA
| | - Xiaoshu Pan
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, UF Health Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, FL 32611-7200, USA
| | - Hoda Safari Yazd
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, UF Health Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, FL 32611-7200, USA
| | - Min Hong
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, UF Health Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, FL 32611-7200, USA
| | - Jianrong Lu
- Department of Biochemistry and Molecular Biology, UF Health Cancer Center, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Y Charles Cao
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, UF Health Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, FL 32611-7200, USA
| | - Weihong Tan
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Life Sciences, Collaborative Innovation Center for Chemistry and Molecular Medicine, Hunan University, Changsha, 410082, P. R. China.,The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Tumor Hospital), Institute of Cancer and Basic Medicine (IBMC), Chinese Academy of Sciences, Hangzhou, Zhejiang, 310022, P. R. China
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18
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Self-assembled nanostructures from amphiphilic block copolymers prepared via ring-opening metathesis polymerization (ROMP). Prog Polym Sci 2020. [DOI: 10.1016/j.progpolymsci.2020.101278] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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19
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Bakardzhiev P, Toncheva-Moncheva N, Mladenova K, Petrova S, Videv P, Moskova-Doumanova V, Topouzova-Hristova T, Doumanov J, Rangelov S. Assembly of amphiphilic nucleic acid-polymer conjugates into complex superaggregates: Preparation, properties, and in vitro performance. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109692] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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20
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Callmann CE, Thompson MP, Gianneschi NC. Poly(peptide): Synthesis, Structure, and Function of Peptide-Polymer Amphiphiles and Protein-like Polymers. Acc Chem Res 2020; 53:400-413. [PMID: 31967781 PMCID: PMC11042489 DOI: 10.1021/acs.accounts.9b00518] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In this Account, we describe the organization of functional peptides as densely arrayed side chains on polymer scaffolds which we introduce as a new class of material called poly(peptide). We describe two general classes of poly(peptide): (1) Peptide-Polymer Amphiphiles (PPAs), which consist of block copolymers with a dense grouping of peptides arrayed as the side chains of the hydrophilic block and connected to a hydrophobic block that drives micelle assembly, and (2) Protein-like Polymers (PLPs), wherein peptide-brush polymers are composed from monomers, each containing a peptide side chain. Peptides organized in this manner imbue polymers or polymeric nanoparticles with a range of functional qualities inherent to their specific sequence. Therefore, polymers or nanoparticles otherwise lacking bioactivity or responsiveness to stimuli, once linked to a peptide of choice, can now bind proteins, enter cells and tissues, have controlled and switchable biodistribution patterns, and be enzyme substrates (e.g., for kinases, phosphatases, proteases). Indeed, where peptide substrates are incorporated, kinetically or thermodynamically driven morphological transitions can be enzymatically induced in the polymeric material. Synergistically, the polymer enforces changes in peptide activity and function by virtue of packing and constraining the peptide. The scaffold can protect peptides from proteolysis, change the pharmacokinetic profile of an intravenously injected peptide, increase the cellular uptake of an otherwise cell impermeable therapeutic peptide, or change peptide substrate activity entirely. Moreover, in addition to the sequence-controlled peptides (generated by solid phase synthesis), the polymer can carry its own sequence-dependent information, especially through living polymerization strategies allowing well-defined blocks and terminal labels (e.g., dyes, contrast agents, charged moieties). Hence, the two elements, peptide and polymer, cooperate to yield materials with unique function and properties quite apart from each alone. Herein, we describe the development of synthetic strategies for accessing these classes of biomolecule polymer conjugates. We discuss the utility of poly(peptide)-based materials in a range of biomedical applications, including imaging of diseased tissues (myocardial infarction and cancer), delivering small molecule drugs to tumors with high specificity, imparting cell permeability to otherwise impermeable peptides, protecting bioactive peptides from proteolysis in harsh conditions (e.g., stomach acid and whole blood), and transporting proteins into traditionally difficult-to-transfect cell types, including stem cells. Poly(peptide) materials offer new properties to both the constituent peptides and to the polymers, which can be tuned by the design of the oligopeptide sequence, degree of polymerization, peptide arrangement on the polymer backbone, and polymer backbone chemistry. These properties establish this approach as valuable for the development of peptides as medicines and materials in a range of settings.
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Affiliation(s)
- Cassandra E. Callmann
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
- Departments of Chemistry, Materials Science & Engineering, Biomedical Engineering, and Pharmacology, International Institute of Nanotechnology, Simpson Querrey Institute, Chemistry of Life Processes Institute, Lurie Cancer Center, Northwestern University, Evanston, Illinois 60208, United States
| | - Matthew P. Thompson
- Departments of Chemistry, Materials Science & Engineering, Biomedical Engineering, and Pharmacology, International Institute of Nanotechnology, Simpson Querrey Institute, Chemistry of Life Processes Institute, Lurie Cancer Center, Northwestern University, Evanston, Illinois 60208, United States
| | - Nathan C. Gianneschi
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
- Departments of Chemistry, Materials Science & Engineering, Biomedical Engineering, and Pharmacology, International Institute of Nanotechnology, Simpson Querrey Institute, Chemistry of Life Processes Institute, Lurie Cancer Center, Northwestern University, Evanston, Illinois 60208, United States
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21
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Haladjova E, Ugrinova I, Rangelov S. One-pot synthesis of oligonucleotide-grafted polymeric nanoparticles. SOFT MATTER 2020; 16:191-199. [PMID: 31774098 DOI: 10.1039/c9sm01796h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A feasible one-pot approach for constructing oligonucleotide-grafted polymeric nanoparticles is reported. The approach involves formation of mesoglobules from a thermoresponsive polymer, coating of the mesoglobules with a cross-linked polymeric shell, and grafting the latter with oligonucleotide strands. Dynamic and static light scattering are used to parameterize the novel constructs. They are relatively large structures with hydrodynamic radii and molar masses reaching 200 nm and 150.0 × 106 g mol-1, respectively. The oligonucleotide-grafted polymeric nanoparticles are of spherical morphology and moderately negative (-12.4 to -19.1 mV) ζ potential as revealed by AFM, TEM, and electrophoretic light scattering. In accordance with their large size, they are found to carry thousands of oligonucleotide strands per particle. The novel constructs are thermoresponsive. They undergo reversible collapse upon heating and swelling upon cooling, which is associated with changes in the grafting density and, hence, the conformation of the oligonucleotide strands from unextended at room temperature to a more extended one at elevated temperatures. The versatility of the approach is demonstrated by varying the type of the cross-linked shell and content of the oligonucleotide strands and, hence, the grafting density. Appropriate diversification and modifications are suggested as well.
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Affiliation(s)
- Emi Haladjova
- Institute of Polymers, Bulgarian Academy of Sciences, "Akad. G. Bonchev" St., Bl. 103-A, 1113 Sofia, Bulgaria.
| | - Iva Ugrinova
- Institute of Molecular Biology, Bulgarian Academy of Sciences, "Akad. G. Bonchev" St., Bl. 21, 1113 Sofia, Bulgaria
| | - Stanislav Rangelov
- Institute of Polymers, Bulgarian Academy of Sciences, "Akad. G. Bonchev" St., Bl. 103-A, 1113 Sofia, Bulgaria.
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22
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Sahle FF, Lowe TL. Design strategies for programmable oligonucleotide nanotherapeutics. Drug Discov Today 2020; 25:73-88. [PMID: 31525462 PMCID: PMC6980509 DOI: 10.1016/j.drudis.2019.09.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 08/02/2019] [Accepted: 09/09/2019] [Indexed: 01/08/2023]
Abstract
A systematic review on how to design different programmable nanotherapeutics using oligonucleotides as building blocks or as surface and matrix modifiers for controlled and targeted delivery of various therapeutic agents in presented.
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Affiliation(s)
- Fitsum Feleke Sahle
- Department of Pharmaceutical Sciences, University of Tennessee Health Sciences Center, Memphis, TN 38163, USA
| | - Tao L Lowe
- Department of Pharmaceutical Sciences, University of Tennessee Health Sciences Center, Memphis, TN 38163, USA.
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23
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Applications of Spherical Nucleic Acid Nanoparticles as Delivery Systems. Trends Mol Med 2019; 25:1066-1079. [DOI: 10.1016/j.molmed.2019.08.012] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 08/26/2019] [Accepted: 08/28/2019] [Indexed: 12/13/2022]
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24
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Pérez-Lemus GR, Armas-Pérez JC, Mendoza A, Quintana-H J, Ramírez-Hernández A. Hierarchical complex self-assembly in binary nanoparticle mixtures. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2019; 31:475102. [PMID: 31398718 DOI: 10.1088/1361-648x/ab39fd] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Hierarchical self-assembly of soft matter provides a powerful route to create complex materials with enhanced physical properties. The understanding of the fundamental processes leading to such organization can provide design rules to create new functional materials. In this work, we use a simple model of polymer-grafted nanoparticles to explore the self-assembly of binary mixtures. By using Monte Carlo simulations we study the interplay of composition, density and particle sizes on the self-organization of such nanoparticle systems. It is found that complex hierarchical organization can take place for conditions where one-component systems form simple lattices. In particular, a mixture where one component forms a structure with 18-fold symmetry in a sea of an apparent disordered phase of the second component is observed to emerge for certain parameter combinations.
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Affiliation(s)
- Gustavo R Pérez-Lemus
- Instituto de Química, Universidad Nacional Autónoma de México, Apdo. Postal 70213, 04510 México D.F., Mexico
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25
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Zhang J, Guo Y, Ding F, Pan G, Zhu X, Zhang C. A Camptothecin‐Grafted DNA Tetrahedron as a Precise Nanomedicine to Inhibit Tumor Growth. Angew Chem Int Ed Engl 2019; 58:13794-13798. [DOI: 10.1002/anie.201907380] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Indexed: 11/05/2022]
Affiliation(s)
- Jiao Zhang
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Yuanyuan Guo
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Fei Ding
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Gaifang Pan
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Xinyuan Zhu
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Chuan Zhang
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
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26
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Guan CM, Chinen AB, Ferrer JR, Ko CH, Mirkin CA. Impact of Sequence Specificity of Spherical Nucleic Acids on Macrophage Activation in Vitro and in Vivo. Mol Pharm 2019; 16:4223-4229. [PMID: 31536368 DOI: 10.1021/acs.molpharmaceut.9b00561] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The effects of spherical nucleic acid (SNA) gold nanoparticle conjugates on the activation of macrophages in vitro and release of cytokines in vivo were explored. Herein, we show that G-quadruplexes, the formation of which is enhanced on gold nanoparticle surfaces, elicit an increase in cytokine release from mouse and human macrophages and induce the upregulation of activation receptors as well as NO2 production in vitro. Moreover, these G-rich SNAs can induce cytokine release when injected intravenously, though there were no severe, long-term effects observed. These results further reinforce the notion that nucleic acid sequence and structure play an important role in how SNAs interact in biological milieu and highlight a key design parameter.
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Affiliation(s)
- Chenxia M Guan
- International Institute for Nanotechnology , Evanston , Illinois 60208 , United States
| | - Alyssa B Chinen
- International Institute for Nanotechnology , Evanston , Illinois 60208 , United States
| | - Jennifer R Ferrer
- Department of Surgery , Northwestern Feinberg School of Medicine , Chicago , Illinois 60611 , United States.,International Institute for Nanotechnology , Evanston , Illinois 60208 , United States
| | - Caroline H Ko
- International Institute for Nanotechnology , Evanston , Illinois 60208 , United States
| | - Chad A Mirkin
- International Institute for Nanotechnology , Evanston , Illinois 60208 , United States
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27
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Zhang J, Guo Y, Ding F, Pan G, Zhu X, Zhang C. A Camptothecin‐Grafted DNA Tetrahedron as a Precise Nanomedicine to Inhibit Tumor Growth. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907380] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jiao Zhang
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Yuanyuan Guo
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Fei Ding
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Gaifang Pan
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Xinyuan Zhu
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Chuan Zhang
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
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28
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Jiang T, Zhou L, Liu H, Zhang P, Liu G, Gong P, Li C, Tan W, Chen J, Cai L. Monitorable Mitochondria-Targeting DNAtrain for Image-Guided Synergistic Cancer Therapy. Anal Chem 2019; 91:6996-7000. [DOI: 10.1021/acs.analchem.9b01777] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Tao Jiang
- Department of Pharmaceutical Sciences, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou, Guangdong 510515, P. R. China
- Guangdong Key Laboratory of Nanomedicine, CAS Key Laboratory of Health Informatics, Shenzhen Bioactive Materials Engineering Lab for Medicine, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, P. R. China
| | - Lihua Zhou
- Guangdong Key Laboratory of Nanomedicine, CAS Key Laboratory of Health Informatics, Shenzhen Bioactive Materials Engineering Lab for Medicine, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, P. R. China
| | - Haixiang Liu
- Guangdong Key Laboratory of Nanomedicine, CAS Key Laboratory of Health Informatics, Shenzhen Bioactive Materials Engineering Lab for Medicine, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, P. R. China
- Department of Chemical and Biological Engineering, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water
Bay, Kowloon, China
| | - Pengfei Zhang
- Guangdong Key Laboratory of Nanomedicine, CAS Key Laboratory of Health Informatics, Shenzhen Bioactive Materials Engineering Lab for Medicine, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, P. R. China
- Department of Chemical and Biological Engineering, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water
Bay, Kowloon, China
| | - Guozhen Liu
- Graduate School of Biomedical Engineering, ARC Centre of Excellence in Nanoscale Biophotonics, Faculty of Engineering, Australian Centre for NanoMedicine, University of New South Wales (UNSW), Sydney, New South Wales 2052, Australia
| | - Ping Gong
- Guangdong Key Laboratory of Nanomedicine, CAS Key Laboratory of Health Informatics, Shenzhen Bioactive Materials Engineering Lab for Medicine, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, P. R. China
- Dongguan Key Laboratory of Drug Design and Formulation Technology, Key Laboratory for Nanomedicine, Guangdong Medical University, Dongguan, Guangdong 523808, China
| | - Chunbin Li
- Guangdong Key Laboratory of Nanomedicine, CAS Key Laboratory of Health Informatics, Shenzhen Bioactive Materials Engineering Lab for Medicine, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, P. R. China
| | - Weihong Tan
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Health Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida 32611, United States
| | - Jianhai Chen
- Department of Pharmaceutical Sciences, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou, Guangdong 510515, P. R. China
| | - Lintao Cai
- Guangdong Key Laboratory of Nanomedicine, CAS Key Laboratory of Health Informatics, Shenzhen Bioactive Materials Engineering Lab for Medicine, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, P. R. China
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29
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Tan X, Lu H, Sun Y, Chen X, Wang D, Jia F, Zhang K. Expanding the materials space of DNA via organic-phase ring-opening metathesis polymerization. Chem 2019; 5:1584-1596. [PMID: 31903440 DOI: 10.1016/j.chempr.2019.03.023] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Herein, we develop a facile route to bring DNA to the organic phase, which greatly expands the types of structures accessible using DNA macromonomers. Phosphotriester- and exocyclic amine-protected DNA was synthesized and further modified with a norbornene moiety, which enables homopolymerization via ring-opening metathesis to produce brush-type DNA graft polymers in high yields. Subsequent deprotection cleanly reveals the natural phosphodiester DNA. The method not only achieves high molecular weight DNA graft polymers but when carried out at low monomer:catalyst ratios, yields oligomers that can be further fractionated to molecularly pure, monodisperse entities with one through ten DNA strands per molecule. In addition, we demonstrate substantial simplification in the preparation of traditionally difficult DNA-containing structures, such as DNA/poly(ethylene glycol) diblock graft copolymers and DNA amphiphiles. We envision that the marriage of oligonucleotides with the vast range of organic-phase polymerizations will result in many new classes of materials with yet unknown properties.
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Affiliation(s)
- Xuyu Tan
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, United States
| | - Hao Lu
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, United States
| | - Yehui Sun
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, United States
| | - Xiaoying Chen
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, United States
| | - Dali Wang
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, United States
| | - Fei Jia
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, United States
| | - Ke Zhang
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, United States
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30
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Guo Y, Zhang J, Ding F, Pan G, Li J, Feng J, Zhu X, Zhang C. Stressing the Role of DNA as a Drug Carrier: Synthesis of DNA-Drug Conjugates through Grafting Chemotherapeutics onto Phosphorothioate Oligonucleotides. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1807533. [PMID: 30847970 DOI: 10.1002/adma.201807533] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 01/22/2019] [Indexed: 05/24/2023]
Abstract
To stress the role of deoxyribonucleic acid (DNA) as a drug carrier, an efficient conjugation strategy in which chemotherapeutics can be grafted onto a phosphorothiolated DNA backbone through the reaction between the phosphorothioate group (PS) and a benzyl bromide group is proposed. As a proof of concept, benzyl-bromide-modified paclitaxel (PTX) is employed to graft onto the DNA backbone at the PS modification sites. Due to the easy preparation of phosphorothiolated DNA at any desired position during its solid-phase synthesis, diblock DNA strands containing both normal phosphodiester segment (PO DNA) and phosphorothiolate segment (PS DNA) are directly grafted with a multitude of PTXs without using complicated and exogenous linkers. Then, the resulting amphiphilic PO DNA-blocked-(PS DNA-grafted PTX) conjugates (PO DNA-b-(PS DNA-g-PTX)) assemble into PTX-loaded spherical nucleic acid (SNA)-like micellar nanoparticles (PTX-SNAs) with a high drug loading ratio up to ≈53%. Importantly, the PO DNA segment maintains its molecular recognition property and biological functions, which allows the as-prepared PTX-SNAs to be further functionalized with tumor-targeting aptamers, fluorescent probe strands, or antisense sequences. These multifunctional PTX-SNAs demonstrate active tumor-targeting delivery, efficient inhibition of tumor growth, and the reversal of drug resistance both in vitro and in vivo for comprehensive antitumor therapy.
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Affiliation(s)
- Yuanyuan Guo
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Jiao Zhang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Fei Ding
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Gaifang Pan
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Jing Li
- Shanghai University of Medicine and Health Sciences Affiliated Sixth People's Hospital South Campus, 6600 Nanfeng Road, Shanghai, 201400, China
| | - Jing Feng
- Shanghai University of Medicine and Health Sciences Affiliated Sixth People's Hospital South Campus, 6600 Nanfeng Road, Shanghai, 201400, China
| | - Xinyuan Zhu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Chuan Zhang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
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31
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Affiliation(s)
- Fei Jia
- Department of Chemistry and Chemical Biology, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
| | - Hui Li
- Institute of Chemical Biology and Nanomedicine, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Runhua Chen
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410007, China
| | - Ke Zhang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410007, China
- Department of Chemistry and Chemical Biology, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
- Institute of Chemical Biology and Nanomedicine, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
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32
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Ozmaian M, Freitas BA, Coalson RD. Controlling the Surface Properties of Binary Polymer Brush-Coated Colloids via Targeted Nanoparticles. J Phys Chem B 2019; 123:258-265. [PMID: 30495948 DOI: 10.1021/acs.jpcb.8b05520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This paper explores a novel mechanism for controlling the surface properties of polymer-coated colloids using targeted ("sticky") nanoparticles which attract monomers of certain polymer species. In our study, colloids are coated by two types of tethered polymer chains having different chemical properties. Attraction of nanoparticles to the monomers of one polymer type causes these polymer chains to contract toward the grafting surface, rendering the other type more exposed to the environment. Thus, the effective surface properties of the colloid are dominated by the intended polymer type. We use coarse-grained molecular dynamics (CGMD) simulation to demonstrate that introducing nanoparticles which interact preferentially with certain types of polymers makes it possible to switch between different surface properties of the colloid. This mechanism can in principle be exploited in drug delivery systems and self-assembly applications.
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Affiliation(s)
- Masoumeh Ozmaian
- Department of Chemistry , University of Pittsburgh , Pittsburgh , Pennsylvania 15260 , United States
| | - Brayden A Freitas
- Department of Physics and Astronomy , University of Pittsburgh , Pittsburgh , Pennsylvania 15260 , United States
| | - Rob D Coalson
- Department of Chemistry , University of Pittsburgh , Pittsburgh , Pennsylvania 15260 , United States
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33
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Hoang J, Park CS, Lee HJ, Marquez MD, Zenasni O, Gunaratne PH, Lee TR. Quaternary Ammonium-Terminated Films Formed from Mixed Bidentate Adsorbates Provide a High-Capacity Platform for Oligonucleotide Delivery. ACS APPLIED MATERIALS & INTERFACES 2018; 10:40890-40900. [PMID: 30335936 DOI: 10.1021/acsami.8b12244] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The exposure of quaternary ammonium groups on surfaces allows self-assembled monolayers (SAMs) to serve as architectural platforms for immobilizing oligonucleotides. The current study describes the preparation of SAMs derived from four unique bidentate adsorbates containing two different ammonium termini (i.e., trimethyl- and triethyl-) and comparison to their monodentate analogs. Our studies found that SAMs derived from the bidentate adsorbates offered considerable enhancements in oligonucleotide binding when compared to SAMs derived from their monodentate analogs. The generated SAMs were analyzed using ellipsometry, X-ray photoelectron spectroscopy, contact angle goniometry, polarization modulation infrared reflection-absorption spectroscopy, and electrochemical quartz crystal microbalance. These analyses showed that the immobilization of oligonucleotides was affected by changes in the terminal functionalities and the relative packing densities of the monolayers. In efforts to enhance further the immobilization of oligonucleotides on these SAM surfaces, we explored the use of adsorbates having aliphatic linkers with systematically varying chain lengths to form binary SAMs on gold. Mixed monolayers with 50:50 ratios of adsorbates showed the greatest oligonucleotide binding. These studies lay the groundwork for oligonucleotide delivery using gold-based nanoparticles and nanoshells.
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Affiliation(s)
- Johnson Hoang
- Department of Biology and Biochemistry , University of Houston , Houston , Texas 77204-5001 , United States
| | - Chul Soon Park
- Departments of Chemistry and Chemical Engineering and the Texas Center for Superconductivity , University of Houston , Houston , Texas 77204-5003 , United States
| | - Han Ju Lee
- Departments of Chemistry and Chemical Engineering and the Texas Center for Superconductivity , University of Houston , Houston , Texas 77204-5003 , United States
| | - Maria D Marquez
- Departments of Chemistry and Chemical Engineering and the Texas Center for Superconductivity , University of Houston , Houston , Texas 77204-5003 , United States
| | - Oussama Zenasni
- Departments of Chemistry and Chemical Engineering and the Texas Center for Superconductivity , University of Houston , Houston , Texas 77204-5003 , United States
| | - Preethi H Gunaratne
- Department of Biology and Biochemistry , University of Houston , Houston , Texas 77204-5001 , United States
| | - T Randall Lee
- Departments of Chemistry and Chemical Engineering and the Texas Center for Superconductivity , University of Houston , Houston , Texas 77204-5003 , United States
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34
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Hu X, Kim CJ, Albert SK, Park SJ. DNA-Grafted Poly(acrylic acid) for One-Step DNA Functionalization of Iron Oxide Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:14342-14346. [PMID: 30392363 DOI: 10.1021/acs.langmuir.8b03119] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Here, we report one-step DNA functionalization of hydrophobic iron oxide nanoparticles (IONPs) using DNA-grafted poly(acrylic acid) (PAA- g-DNA). PAA- g-DNA was synthesized by coupling PAA to amine-modified oligonucleotides via solid-phase amide chemistry, which yielded PAA grafted with multiple DNA strands with high graft efficiencies. Synthesized PAA- g-DNA was utilized as a phase-transfer and DNA functionalization agent for hydrophobic IONPs, taking advantage of unreacted carboxylic acid groups. The resulting DNA-modified IONPs were well dispersed in aqueous solutions and possessed DNA binding properties characteristic of polyvalent DNA nanostructures, showing that this approach provides a simple one-step method for DNA functionalization of hydrophobic IONPs.
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Affiliation(s)
- Xiaole Hu
- Department of Chemistry and Nanoscience , Ewha Womans University , 52 Ewhayeodae-gil , Seodaemun-gu, Seoul 03760 , Korea
| | - Chan-Jin Kim
- Department of Chemistry and Nanoscience , Ewha Womans University , 52 Ewhayeodae-gil , Seodaemun-gu, Seoul 03760 , Korea
| | - Shine K Albert
- Department of Chemistry and Nanoscience , Ewha Womans University , 52 Ewhayeodae-gil , Seodaemun-gu, Seoul 03760 , Korea
| | - So-Jung Park
- Department of Chemistry and Nanoscience , Ewha Womans University , 52 Ewhayeodae-gil , Seodaemun-gu, Seoul 03760 , Korea
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35
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Lueckerath T, Strauch T, Koynov K, Barner-Kowollik C, Ng DYW, Weil T. DNA–Polymer Conjugates by Photoinduced RAFT Polymerization. Biomacromolecules 2018; 20:212-221. [DOI: 10.1021/acs.biomac.8b01328] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thorsten Lueckerath
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Tina Strauch
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Kaloian Koynov
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Christopher Barner-Kowollik
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology (QUT), George Street, Brisbane, Queensland 4000, Australia
- Macromolecular Architectures, Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstraße 18, 76131 Karlsruhe, Germany
| | - David Y. W. Ng
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Tanja Weil
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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36
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Melnychuk N, Klymchenko AS. DNA-Functionalized Dye-Loaded Polymeric Nanoparticles: Ultrabright FRET Platform for Amplified Detection of Nucleic Acids. J Am Chem Soc 2018; 140:10856-10865. [PMID: 30067022 DOI: 10.1021/jacs.8b05840] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Going beyond the limits of optical biosensing motivates exploration of signal amplification strategies that convert a single molecular recognition event into a response equivalent to hundreds of fluorescent dyes. In this respect, Førster Resonance Energy Transfer (FRET) with bright fluorescent nanoparticles (NPs) is an attractive direction, but it is limited by poor efficiency of NPs as FRET donors, because their size is typically much larger than the Førster radius (∼5 nm). Here, we established FRET-based nanoparticle probes that overcome this fundamental limitation by exploiting a phenomenon of giant light harvesting with thousands of strongly coupled dyes in a polymer matrix. These nanoprobes are based on 40 nm dye-loaded poly(methyl methacrylate- co-methacrylic acid) (PMMA-MA) NPs, so-called light-harvesting nanoantennas, which are functionalized at their surface with oligonucleotides. To achieve this functionalization, we developed an original methodology: PMMA-MA was modified with azide/carboxylate bifunctional group that enabled assembly of small polymeric NPs and their further Cu-free click coupling with oligonucleotides. The obtained functionalized nanoantenna behaves as giant energy donor, where hybridization of target nucleic acid (encoding survivin cancer marker) with ∼23 grafted oligonucleotides/Cy5-acceptors switches on/off FRET from ∼3200 rhodamine-donors of the nanoantenna, leading to 75-fold signal amplification. In solution and on surfaces at single-particle level, the nanoprobe provides sequence-specific two-color ratiometric response to nucleic acids with limit of detection reaching 0.25 pM. It displays unprecedented brightness for a FRET biosensor: it outperforms analogous FRET-based molecular probe by >2000-fold and QDot-605 by ∼100-fold. The developed concept of amplified sensing will increase orders of magnitude sensitivity of fluorescent probes for biomolecular targets.
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Affiliation(s)
- Nina Melnychuk
- Laboratoire de Bioimagerie et Pathologies, UMR 7021 CNRS, Faculté de Pharmacie , Université de Strasbourg , Strasbourg CS 60024 , France
| | - Andrey S Klymchenko
- Laboratoire de Bioimagerie et Pathologies, UMR 7021 CNRS, Faculté de Pharmacie , Université de Strasbourg , Strasbourg CS 60024 , France
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37
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Abstract
Spherical nucleic acids (SNAs) are highly oriented, well organized, polyvalent structures of nucleic acids conjugated to hollow or solid core nanoparticles. Because they can transfect many tissue and cell types without toxicity, induce minimum immune response, and penetrate various biological barriers (such as the skin, blood-brain barrier, and blood-tumor barrier), they have become versatile tools for the delivery of nucleic acids, drugs, and proteins for various therapeutic purposes. This article describes the unique structures and properties of SNAs and discusses how these properties enable their application in gene regulation, immunomodulation, and drug and protein delivery. It also summarizes current efforts towards clinical translation of SNAs and provides an expert opinion on remaining challenges to be addressed in the path forward to the clinic.
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Affiliation(s)
- Chintan H Kapadia
- Biomedical Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Jilian R Melamed
- Biomedical Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Emily S Day
- Biomedical Engineering, University of Delaware, Newark, DE, 19716, USA.
- Materials Science and Engineering, University of Delaware, Newark, DE, 19716, USA.
- Helen F. Graham Cancer Center and Research Institute, Newark, DE, 19713, USA.
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38
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Sahle FF, Gulfam M, Lowe TL. Design strategies for physical-stimuli-responsive programmable nanotherapeutics. Drug Discov Today 2018; 23:992-1006. [PMID: 29653291 PMCID: PMC6195679 DOI: 10.1016/j.drudis.2018.04.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 03/31/2018] [Accepted: 04/04/2018] [Indexed: 12/22/2022]
Abstract
Nanomaterials that respond to externally applied physical stimuli such as temperature, light, ultrasound, magnetic field and electric field have shown great potential for controlled and targeted delivery of therapeutic agents. However, the body of literature on programming these stimuli-responsive nanomaterials to attain the desired level of pharmacologic responses is still fragmented and has not been systematically reviewed. The purpose of this review is to summarize and synthesize the literature on various design strategies for simple and sophisticated programmable physical-stimuli-responsive nanotherapeutics.
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Affiliation(s)
- Fitsum Feleke Sahle
- Department of Pharmaceutical Sciences, University of Tennessee Health Sciences Center, Memphis, TN 38163, USA
| | - Muhammad Gulfam
- Department of Pharmaceutical Sciences, University of Tennessee Health Sciences Center, Memphis, TN 38163, USA
| | - Tao L Lowe
- Department of Pharmaceutical Sciences, University of Tennessee Health Sciences Center, Memphis, TN 38163, USA.
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39
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Ruan W, Zheng M, An Y, Liu Y, Lovejoy DB, Hao M, Zou Y, Lee A, Yang S, Lu Y, Morsch M, Chung R, Shi B. DNA nanoclew templated spherical nucleic acids for siRNA delivery. Chem Commun (Camb) 2018; 54:3609-3612. [DOI: 10.1039/c7cc09257a] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A superior biocompatible spherical nucleic acid (SNA) conjugate was fabricated by grafting siRNA onto the surface of a core composed of a spherical DNA nanostructure that we have termed DNA nanoclew (DC).
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Affiliation(s)
- Weimin Ruan
- International Joint Center for Biomedical Innovation
- School of Life Sciences
- Henan University
- Kaifeng
- P. R. China
| | - Meng Zheng
- International Joint Center for Biomedical Innovation
- School of Life Sciences
- Henan University
- Kaifeng
- P. R. China
| | - Yang An
- School of Basic Medical Sciences
- Henan University
- Kaifeng
- P. R. China
| | - Yuanyuan Liu
- International Joint Center for Biomedical Innovation
- School of Life Sciences
- Henan University
- Kaifeng
- P. R. China
| | - David B. Lovejoy
- Motor Neuron Disease Research Centre, Department of Biomedical Sciences, Faculty of Medicine and Health Science, Macquarie University
- Australia
| | - Mingcong Hao
- International Joint Center for Biomedical Innovation
- School of Life Sciences
- Henan University
- Kaifeng
- P. R. China
| | - Yan Zou
- International Joint Center for Biomedical Innovation
- School of Life Sciences
- Henan University
- Kaifeng
- P. R. China
| | - Albert Lee
- Motor Neuron Disease Research Centre, Department of Biomedical Sciences, Faculty of Medicine and Health Science, Macquarie University
- Australia
| | - Shu Yang
- Motor Neuron Disease Research Centre, Department of Biomedical Sciences, Faculty of Medicine and Health Science, Macquarie University
- Australia
| | - Yiqing Lu
- International Joint Center for Biomedical Innovation
- School of Life Sciences
- Henan University
- Kaifeng
- P. R. China
| | - Marco Morsch
- Motor Neuron Disease Research Centre, Department of Biomedical Sciences, Faculty of Medicine and Health Science, Macquarie University
- Australia
| | - Roger Chung
- Motor Neuron Disease Research Centre, Department of Biomedical Sciences, Faculty of Medicine and Health Science, Macquarie University
- Australia
| | - Bingyang Shi
- International Joint Center for Biomedical Innovation
- School of Life Sciences
- Henan University
- Kaifeng
- P. R. China
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40
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Xie N, Feng K, Shao J, Chen B, Tung CH, Wu LZ. A simple, modular synthesis of bifunctional peptide-polynorbornenes for apoptosis induction and fluorescence imaging of cancer cells. Polym Chem 2018. [DOI: 10.1039/c7py01730h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Bifunctional peptide-polynorbornenes were designed and fabricated via modular ROMP for mitochondrial-dependent apoptosis induction and fluorescence imaging of cancer cells.
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Affiliation(s)
- Nan Xie
- School of Pharmaceutical Sciences
- Capital Medical University
- Beijing 100069
- P. R. China
| | - Ke Feng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & School of Future Technology
- University of CAS
- the Chinese Academy of Sciences
- Beijing 100190
| | - Jianqun Shao
- School of Pharmaceutical Sciences
- Capital Medical University
- Beijing 100069
- P. R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & School of Future Technology
- University of CAS
- the Chinese Academy of Sciences
- Beijing 100190
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & School of Future Technology
- University of CAS
- the Chinese Academy of Sciences
- Beijing 100190
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & School of Future Technology
- University of CAS
- the Chinese Academy of Sciences
- Beijing 100190
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Condon JE, Jayaraman A. Effect of oligonucleic acid (ONA) backbone features on assembly of ONA-star polymer conjugates: a coarse-grained molecular simulation study. SOFT MATTER 2017; 13:6770-6783. [PMID: 28825068 DOI: 10.1039/c7sm01534h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Understanding the impact of incorporating new physical and chemical features in oligomeric DNA mimics, termed generally as "oligonucleic acids" (ONAs), on their structure and thermodynamics will be beneficial in designing novel materials for a variety of applications. In this work, we conduct coarse-grained molecular simulations of ONA-star polymer conjugates with varying ONA backbone flexibility, ONA backbone charge, and number of arms in the star polymer at a constant ONA strand volume fraction to elucidate the effect of these design parameters on the thermodynamics and assembly of multi-arm ONA-star polymer conjugates. We quantify the thermo-reversible behavior of the ONA-star polymer conjugates by quantifying the hybridization of the ONA strands in the system as a function of temperature (i.e. melting curve). Additionally, we characterize the assembly of the ONA-star polymer conjugates by tracking cluster formation and percolation as a function of temperature, as well as cluster size distribution at temperatures near the assembly transition region. The key results are as follows. The melting temperature (Tm) of the ONA strands decreases upon going from a neutral to a charged ONA backbone and upon increasing flexibility of the ONA backbone. Similar behavior is seen for the assembly transition temperature (Ta) with varying ONA backbone charge and flexibility. While the number of arms in the ONA-star polymer conjugate has a negligible effect on the ONA Tm in these systems, as the number of ONA-star polymer arms increase, the assembly temperature Ta increases and local ordering in the assembled state improves. By understanding how factors like ONA backbone charge, backbone flexibility, and ONA-star polymer conjugate architecture impact the behavior of ONA-star polymer conjugate systems, we can better inform how the selection of ONA chemistry will influence resulting ONA-star polymer assembly.
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Affiliation(s)
- Joshua E Condon
- Department of Chemical and Biomolecular Engineering, Colburn Laboratory, University of Delaware, 150 Academy Street, Newark, DE 19716, USA.
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Li J, Zou S, Gao J, Liang J, Zhou H, Liang L, Wu W. Block copolymer conjugated Au-coated Fe 3O 4 nanoparticles as vectors for enhancing colloidal stability and cellular uptake. J Nanobiotechnology 2017; 15:56. [PMID: 28743275 PMCID: PMC5526242 DOI: 10.1186/s12951-017-0290-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 07/20/2017] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Polymer surface-modified inorganic nanoparticles (NPs) provide a multifunctional platform for assisting gene delivery. Rational structure design for enhancing colloidal stability and cellular uptake is an important strategy in the development of safe and highly efficient gene vectors. RESULTS Heterogeneous Au-coated Fe3O4 (Fe3O4@Au) NPs capped by polyethylene glycol-b-poly1-(3-aminopropyl)-3-(2-methacryloyloxy propylimidazolium bromine) (PEG-b-PAMPImB-Fe3O4@Au) were prepared for DNA loading and magnetofection assays. The Au outer shell of the NPs is an effective platform for maintaining the superparamagnetism of Fe3O4 and for PEG-b-PAMPImB binding via Au-S covalent bonds. By forming an electrostatic complex with DNA at the inner PAMPImB shell, the magnetic nanoplexes offer steric protection from the outer corona PEG, thereby promoting high colloidal stability. Transfection efficiency assays in human esophageal cancer cells (EC109) show that the nanoplexes have high transfection efficiency at a short incubation time in the presence of an external magnetic field, due to increased cellular internalization via magnetic acceleration. Finally, after transfection with the magnetic nanoplexes EC109 cells acquire magnetic properties, thus allowing for selective separation of transfected cells. CONCLUSION Precisely engineered architectures based on neutral-cationic block copolymer-conjugated heterogeneous NPs provide a valuable strategy for improving the applicability and efficacy of synthesized vectors.
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Affiliation(s)
- Junbo Li
- School of Chemical Engineering & Pharmaceutics, Henan University of Science & Technology, Luo Yang, 471023 China
| | - Sheng Zou
- School of Chemical Engineering & Pharmaceutics, Henan University of Science & Technology, Luo Yang, 471023 China
| | - Jiayu Gao
- School of Chemical Engineering & Pharmaceutics, Henan University of Science & Technology, Luo Yang, 471023 China
| | - Ju Liang
- School of Chemical Engineering & Pharmaceutics, Henan University of Science & Technology, Luo Yang, 471023 China
| | - Huiyun Zhou
- School of Chemical Engineering & Pharmaceutics, Henan University of Science & Technology, Luo Yang, 471023 China
| | - Lijuan Liang
- School of Chemical Engineering & Pharmaceutics, Henan University of Science & Technology, Luo Yang, 471023 China
| | - Wenlan Wu
- School of Medicine, Henan University of Science & Technology, Luo Yang, 471023 China
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