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Everson HR, Neyra K, Scarton DV, Chandrasekhar S, Green CM, Schmidt TL, Medintz IL, Veneziano R, Mathur D. Purification of DNA Nanoparticles Using Photocleavable Biotin Tethers. ACS Appl Mater Interfaces 2024; 16:22334-22343. [PMID: 38635042 DOI: 10.1021/acsami.3c18955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
The number of applications of self-assembled deoxyribonucleic acid (DNA) origami nanoparticles (DNA NPs) has increased drastically, following the development of a variety of single-stranded template DNA (ssDNA) that can serve as the scaffold strand. In addition to viral genomes, such as M13 bacteriophage and lambda DNAs, enzymatically produced ssDNA from various template sources is rapidly gaining traction and being applied as the scaffold for DNA NP preparation. However, separating fully formed DNA NPs that have custom scaffolds from crude assembly mixes is often a multistep process of first separating the ssDNA scaffold from its enzymatic amplification process and then isolating the assembled DNA NPs from excess precursor strands. Only then is the DNA NP sample ready for downstream characterization and application. In this work, we highlight a single-step purification of custom sequence- or M13-derived scaffold-based DNA NPs using photocleavable biotin tethers. The process only requires an inexpensive ultraviolet (UV) lamp, and DNA NPs with up to 90% yield and high purity are obtained. We show the versatility of the process in separating two multihelix bundle structures and a wireframe polyhedral architecture.
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Affiliation(s)
- Heather R Everson
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Kayla Neyra
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Dylan V Scarton
- College of Science, Interdisciplinary Program in Neuroscience, George Mason University, Fairfax, Virginia 22030, United States
- Institute for Advanced Biomedical Research, George Mason University, Manassas, Virginia 20110, United States
| | | | - Christopher M Green
- Center for Bio/Molecular Science and Engineering, US Naval Research Laboratory, Washington, District of Columbia 20375, United States
| | | | - Igor L Medintz
- Center for Bio/Molecular Science and Engineering, US Naval Research Laboratory, Washington, District of Columbia 20375, United States
| | - Remi Veneziano
- Institute for Advanced Biomedical Research, George Mason University, Manassas, Virginia 20110, United States
- College of Engineering and Computing, Department of Bioengineering, George Mason University, Manassas, Virginia 20110, United States
| | - Divita Mathur
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106, United States
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Neyra K, Everson HR, Mathur D. Dominant Analytical Techniques in DNA Nanotechnology for Various Applications. Anal Chem 2024; 96:3687-3697. [PMID: 38353660 DOI: 10.1021/acs.analchem.3c04176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
DNA nanotechnology is rapidly gaining traction in numerous applications, each bearing varying degrees of tolerance to the quality and quantity necessary for viable nanostructure function. Despite the distinct objectives of each application, they are united in their reliance on essential analytical techniques, such as purification and characterization. This tutorial aims to guide the reader through the current state of DNA nanotechnology analytical chemistry, outlining important factors to consider when designing, assembling, purifying, and characterizing a DNA nanostructure for downstream applications.
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Affiliation(s)
- Kayla Neyra
- Department of Chemistry, Case Western Reserve University, Cleveland Ohio 44106, United States
| | - Heather R Everson
- Department of Chemistry, Case Western Reserve University, Cleveland Ohio 44106, United States
| | - Divita Mathur
- Department of Chemistry, Case Western Reserve University, Cleveland Ohio 44106, United States
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Oktay E, Bush J, Vargas M, Scarton DV, O'Shea B, Hartman A, Green CM, Neyra K, Gomes CM, Medintz IL, Mathur D, Veneziano R. Customized Scaffolds for Direct Assembly of Functionalized DNA Origami. ACS Appl Mater Interfaces 2023. [PMID: 37267624 DOI: 10.1021/acsami.3c05690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Functional DNA origami nanoparticles (DNA-NPs) are used as nanocarriers in a variety of biomedical applications including targeted drug delivery and vaccine development. DNA-NPs can be designed into a broad range of nanoarchitectures in one, two, and three dimensions with high structural fidelity. Moreover, the addressability of the DNA-NPs enables the precise organization of functional moieties, which improves targeting, actuation, and stability. DNA-NPs are usually functionalized via chemically modified staple strands, which can be further conjugated with additional polymers and proteins for the intended application. Although this method of functionalization is extremely efficient to control the stoichiometry and organization of functional moieties, fewer than half of the permissible sites are accessible through staple modifications. In addition, DNA-NP functionalization rapidly becomes expensive when a high number of functionalizations such as fluorophores for tracking and chemical modifications for stability that do not require spatially precise organization are used. To facilitate the synthesis of functional DNA-NPs, we propose a simple and robust strategy based on an asymmetric polymerase chain reaction (aPCR) protocol that allows direct synthesis of custom-length scaffolds that can be randomly modified and/or precisely modified via sequence design. We demonstrated the potential of our strategy by producing and characterizing heavily modified scaffold strands with amine groups for dye functionalization, phosphorothioate bonds for stability, and biotin for surface immobilization. We further validated our sequence design approach for precise conjugation of biomolecules by synthetizing scaffolds including binding loops and aptamer sequences that can be used for direct hybridization of nucleic acid tagged biomolecules or binding of protein targets.
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Affiliation(s)
- Esra Oktay
- College of Engineering and Computing, Department of Bioengineering, George Mason University, Manassas, Virginia 20110-2201, United States
- Institute for Advanced Biomedical Research, Manassas, Virginia 20110-2201, United States
| | - Joshua Bush
- College of Engineering and Computing, Department of Bioengineering, George Mason University, Manassas, Virginia 20110-2201, United States
- Institute for Advanced Biomedical Research, Manassas, Virginia 20110-2201, United States
| | - Merlyn Vargas
- College of Engineering and Computing, Department of Bioengineering, George Mason University, Manassas, Virginia 20110-2201, United States
| | - Dylan Valerio Scarton
- College of Science, Interdisciplinary Program in Neuroscience, George Mason University, Fairfax, Virginia 22030-4444, United States
- Institute for Advanced Biomedical Research, Manassas, Virginia 20110-2201, United States
| | - Bailey O'Shea
- College of Engineering and Computing, Department of Bioengineering, George Mason University, Manassas, Virginia 20110-2201, United States
| | - Amber Hartman
- College of Engineering and Computing, Department of Bioengineering, George Mason University, Manassas, Virginia 20110-2201, United States
| | - Christopher M Green
- Center for Bio/Molecular Science and Engineering Code 6900, U.S. Naval Research Laboratory, Washington DC 20375-0001, United States
| | - Kayla Neyra
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106-7078, United States
| | - Carolina M Gomes
- College of Engineering and Computing, Department of Bioengineering, George Mason University, Manassas, Virginia 20110-2201, United States
- Institute for Advanced Biomedical Research, Manassas, Virginia 20110-2201, United States
| | - Igor L Medintz
- Center for Bio/Molecular Science and Engineering Code 6900, U.S. Naval Research Laboratory, Washington DC 20375-0001, United States
| | - Divita Mathur
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106-7078, United States
| | - Remi Veneziano
- College of Engineering and Computing, Department of Bioengineering, George Mason University, Manassas, Virginia 20110-2201, United States
- Institute for Advanced Biomedical Research, Manassas, Virginia 20110-2201, United States
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