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Büber E, Schröder T, Scheckenbach M, Dass M, Franquelim HG, Tinnefeld P. DNA Origami Curvature Sensors for Nanoparticle and Vesicle Size Determination with Single-Molecule FRET Readout. ACS NANO 2023; 17:3088-3097. [PMID: 36735241 DOI: 10.1021/acsnano.2c11981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Particle size is an important characteristic of materials with a direct effect on their physicochemical features. Besides nanoparticles, particle size and surface curvature are particularly important in the world of lipids and cellular membranes as the cell membrane undergoes conformational changes in many biological processes which leads to diverging local curvature values. On account of that, it is important to develop cost-effective, rapid and sufficiently precise systems that can measure the surface curvature on the nanoscale that can be translated to size for spherical particles. As an alternative approach for particle characterization, we present flexible DNA nanodevices that can adapt to the curvature of the structure they are bound to. The curvature sensors use Fluorescence Resonance Energy Transfer (FRET) as the transduction mechanism on the single-molecule level. The curvature sensors consist of segmented DNA origami structures connected via flexible DNA linkers incorporating a FRET pair. The activity of the sensors was first demonstrated with defined binding to different DNA origami geometries used as templates. Then the DNA origami curvature sensors were applied to measure spherical silica beads having different size, and subsequently on lipid vesicles. With the designed sensors, we could reliably distinguish different sized nanoparticles within a size range of 50-300 nm as well as the bending angle range of 50-180°. This study helps with the development of more advanced modular-curvature sensing devices that are capable of determining the sizes of nanoparticles and biological complexes.
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Affiliation(s)
- Ece Büber
- Department of Chemistry and Center for NanoScience, Ludwig-Maximilians-University, Butenandtstraße 5-13, 81377Munich, Germany
| | - Tim Schröder
- Department of Chemistry and Center for NanoScience, Ludwig-Maximilians-University, Butenandtstraße 5-13, 81377Munich, Germany
| | - Michael Scheckenbach
- Department of Chemistry and Center for NanoScience, Ludwig-Maximilians-University, Butenandtstraße 5-13, 81377Munich, Germany
| | - Mihir Dass
- Faculty of Physics and Center for NanoScience, Ludwig-Maximilians-University, 80539Munich, Germany
| | - Henri G Franquelim
- Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152Martinsried, Germany
- Interfaculty Centre for Bioactive Matter, Leipzig University, c/o Deutscher Platz 5 (BBZ), 04109Leipzig, Germany
| | - Philip Tinnefeld
- Department of Chemistry and Center for NanoScience, Ludwig-Maximilians-University, Butenandtstraße 5-13, 81377Munich, Germany
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2
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Single antibody detection in a DNA origami nanoantenna. iScience 2021; 24:103072. [PMID: 34568793 PMCID: PMC8449233 DOI: 10.1016/j.isci.2021.103072] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 07/26/2021] [Accepted: 08/27/2021] [Indexed: 12/24/2022] Open
Abstract
DNA nanotechnology offers new biosensing approaches by templating different sensor and transducer components. Here, we combine DNA origami nanoantennas with label-free antibody detection by incorporating a nanoswitch in the plasmonic hotspot of the nanoantenna. The nanoswitch contains two antigens that are displaced by antibody binding, thereby eliciting a fluorescent signal. Single-antibody detection is demonstrated with a DNA origami integrated anti-digoxigenin antibody nanoswitch. In combination with the nanoantenna, the signal generated by the antibody is additionally amplified. This allows the detection of single antibodies on a portable smartphone microscope. Overall, fluorescence-enhanced antibody detection in DNA origami nanoantennas shows that fluorescence-enhanced biosensing can be expanded beyond the scope of the nucleic acids realm. Single-antibody detection with nanoswitch sensor incorporated in DNA origami structures Fluorescence-enhanced single antibody detection in DNA origami nanoantennas Detection of single antibodies on a portable smartphone microscope
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3
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Kimna C, Lutz TM, Yan H, Song J, Crouzier T, Lieleg O. DNA Strands Trigger the Intracellular Release of Drugs from Mucin-Based Nanocarriers. ACS NANO 2021; 15:2350-2362. [PMID: 32806031 DOI: 10.1021/acsnano.0c04035] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Gaining control over the delivery of therapeutics to a specific disease site is still very challenging. However, especially when cytotoxic drugs such as chemotherapeutics are used, the importance of a control mechanism that can differentiate "sick" target cells from the surrounding healthy tissue is pivotal. Here, we designed a nanoparticle-based drug delivery process, which releases an active agent only in the presence of a specific trigger DNA sequence. With this strategy, we are able to initiate the release of therapeutics into the cytosol with high efficiency. Furthermore, we demonstrate how an endogenous marker (e.g., a specific miRNA sequence) that is overexpressed in the initial phases of certain cancer types can be used as a stimulus to autonomously initiate intracellular drug release-and only in cells where this pathophysiological marker is present. We expect that this precisely controlled delivery mechanism can facilitate the design of site-specific treatments for such diseases, where an overexpression of signature oligonucleotide sequences has been identified.
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Affiliation(s)
- Ceren Kimna
- Department of Mechanical Engineering and Munich School of Bioengineering, Technical University of Munich, Boltzmannstraße 11, 85748 Garching, Germany
| | - Theresa Monika Lutz
- Department of Mechanical Engineering and Munich School of Bioengineering, Technical University of Munich, Boltzmannstraße 11, 85748 Garching, Germany
| | - Hongji Yan
- Division of Glycoscience, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, AlbaNova University Center, 106 91 Stockholm, Sweden
| | - Jian Song
- Department of Mechanical Engineering and Munich School of Bioengineering, Technical University of Munich, Boltzmannstraße 11, 85748 Garching, Germany
| | - Thomas Crouzier
- Division of Glycoscience, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, AlbaNova University Center, 106 91 Stockholm, Sweden
| | - Oliver Lieleg
- Department of Mechanical Engineering and Munich School of Bioengineering, Technical University of Munich, Boltzmannstraße 11, 85748 Garching, Germany
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4
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Sun J, Sun X. Recent advances in the construction of DNA nanostructure with signal amplification and ratiometric response for miRNA sensing and imaging. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.115900] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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5
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Loretan M, Domljanovic I, Lakatos M, Rüegg C, Acuna GP. DNA Origami as Emerging Technology for the Engineering of Fluorescent and Plasmonic-Based Biosensors. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E2185. [PMID: 32397498 PMCID: PMC7254321 DOI: 10.3390/ma13092185] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 04/30/2020] [Accepted: 05/05/2020] [Indexed: 12/23/2022]
Abstract
DNA nanotechnology is a powerful and promising tool for the development of nanoscale devices for numerous and diverse applications. One of the greatest potential fields of application for DNA nanotechnology is in biomedicine, in particular biosensing. Thanks to the control over their size, shape, and fabrication, DNA origami represents a unique opportunity to assemble dynamic and complex devices with precise and predictable structural characteristics. Combined with the addressability and flexibility of the chemistry for DNA functionalization, DNA origami allows the precise design of sensors capable of detecting a large range of different targets, encompassing RNA, DNA, proteins, small molecules, or changes in physico-chemical parameters, that could serve as diagnostic tools. Here, we review some recent, salient developments in DNA origami-based sensors centered on optical detection methods (readout) with a special emphasis on the sensitivity, the selectivity, and response time. We also discuss challenges that still need to be addressed before this approach can be translated into robust diagnostic devices for bio-medical applications.
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Affiliation(s)
- Morgane Loretan
- Photonic Nanosystems, Department of Physics, Faculty of Science and Medicine, University of Fribourg, Chemin du Musée 3, PER08, 1700 Fribourg, Switzerland; (M.L.); (G.P.A.)
| | - Ivana Domljanovic
- Laboratory of Experimental and Translational Oncology, Department of Oncology, Microbiology and Immunology, Faculty of Science and Medicine, University of Fribourg, Chemin du Musée 18, PER17, 1700 Fribourg, Switzerland;
| | - Mathias Lakatos
- Photonic Nanosystems, Department of Physics, Faculty of Science and Medicine, University of Fribourg, Chemin du Musée 3, PER08, 1700 Fribourg, Switzerland; (M.L.); (G.P.A.)
| | - Curzio Rüegg
- Laboratory of Experimental and Translational Oncology, Department of Oncology, Microbiology and Immunology, Faculty of Science and Medicine, University of Fribourg, Chemin du Musée 18, PER17, 1700 Fribourg, Switzerland;
| | - Guillermo P. Acuna
- Photonic Nanosystems, Department of Physics, Faculty of Science and Medicine, University of Fribourg, Chemin du Musée 3, PER08, 1700 Fribourg, Switzerland; (M.L.); (G.P.A.)
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6
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Khatri S, Hansen J, Astakhova K. Antibodies to synthetic citrullinated peptide epitope correlate with disease activity and flares in rheumatoid arthritis. PLoS One 2020; 15:e0232010. [PMID: 32324839 PMCID: PMC7179858 DOI: 10.1371/journal.pone.0232010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 04/05/2020] [Indexed: 01/13/2023] Open
Abstract
Rheumatoid arthritis (RA), caused by the abnormal recognition of human joint cells by autoimmune antibodies, remains the world’s most prevalent autoimmune disease, with over five million people affected and as much as 4% of the population at risk of RA. To prevent rapid disease development, hormonal and anti-inflammatory therapies require fast and reliable RA diagnosis. However, difficulty in detecting early specific biomarkers for RA means that it is unclear when treatment needs to begin. Here, we combined synthesis of citrullinated peptide epitopes with molecular diagnostics to verify a new specific biomarker for early RA diagnosis and flare prediction. A fibrinogen-derived 21-amino-acid-long citrullinated peptide showed high reactivity toward autoantibodies in RA samples. Additionally, the level of antibodies to this epitope was elevated prior to flares. In contrast, other citrullinated protein variants had lower reactivity and poorer sensitivity to disease activity. In conclusion, fibrinogen-derived epitope E2 subjected to citrullination facilitated a reliable RA diagnosis with a strong correlation to disease activity. This is of a high value for the diagnosis and management of RA patients who respond poorly to treatment.
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Affiliation(s)
- Sangita Khatri
- Department of Chemistry, Technical University of Denmark, Kgs Lyngby, Denmark
| | - Jonas Hansen
- Department of Chemistry, Technical University of Denmark, Kgs Lyngby, Denmark
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Kira Astakhova
- Department of Chemistry, Technical University of Denmark, Kgs Lyngby, Denmark
- * E-mail:
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7
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Srivastava I, Misra SK, Bangru S, Boateng KA, Soares JANT, Schwartz-Duval AS, Kalsotra A, Pan D. Complementary Oligonucleotide Conjugated Multicolor Carbon Dots for Intracellular Recognition of Biological Events. ACS APPLIED MATERIALS & INTERFACES 2020; 12:16137-16149. [PMID: 32182420 PMCID: PMC7982005 DOI: 10.1021/acsami.0c02463] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
By using complementary DNA sequences as surface ligands, we selectively allow two individual diffusing "dual-color" carbon dots to interact in situ and in vitro. Spontaneous nanoscale oxidation of surface-abundant nitroso-/nitro-functionalities leads to two distinctly colored carbon dots (CD) which are isolated by polarity driven chromatographic separation. Green- and red-emitting carbon dots (gCD and rCD) were decorated by complementary single-stranded DNAs which produce a marked increase in the fluorescence emission of the respective carbon dots. Mutual colloidal interactions are achieved through hybridization of complementary DNA base pairs attached to the respective particles, resulting in quenching of their photoluminescence. The observed post-hybridization quenching is presumably due to a combined effect from an aggregation of CDs post duplex DNA formation and close proximity of multicolored CDs, having overlapped spectral regions leading to a nonradiative energy transfer process possibly released as heat. This strategy may contribute to the rational design of mutually interacting carbon dots for a better control over the resulting assembly structure for studying different biological phenomenon including molecular cytogenetics. One of the newly synthesized CDs was successfully used to image intracellular location of GAPDH mRNA using an event of change in fluorescence intensity (FI) of CDs. This selectivity was introduced by conjugating an oligonucleotide harboring complementary sequence to GAPDH mRNA. FI of this conjugated carbon dot, rCD-GAPDH, was also found to decrease in the presence of Ca2+, varied in relation to H+ concentrations, and could serve as a tool to quantify the intracellular concentrations of Ca2+ and pH value (H+) which can give important information about cell survival. Therefore, CD-oligonucleotide conjugates could serve as efficient probes for cellular events and interventions.
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Affiliation(s)
- Indrajit Srivastava
- Departments of Bioengineering, Materials Science and Engineering and Beckman Institute, University of Illinois at Urbana-Champaign, Mills Breast Cancer Institute, and Carle Foundation Hospital, Urbana, IL, 61801, USA
| | - Santosh K. Misra
- Departments of Bioengineering, Materials Science and Engineering and Beckman Institute, University of Illinois at Urbana-Champaign, Mills Breast Cancer Institute, and Carle Foundation Hospital, Urbana, IL, 61801, USA
| | - Sushant Bangru
- Department of Biochemistry, University of Illinois, Urbana-Champaign, Urbana, IL, 61801, USA
- Cancer Center @ Illinois, University of Illinois, Urbana-Champaign, Urbana, IL, 61801, USA
| | - Kingsley A. Boateng
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Julio A. N. T. Soares
- Frederick Seitz Materials Research Laboratories Central Facilities, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Aaron S. Schwartz-Duval
- Departments of Bioengineering, Materials Science and Engineering and Beckman Institute, University of Illinois at Urbana-Champaign, Mills Breast Cancer Institute, and Carle Foundation Hospital, Urbana, IL, 61801, USA
| | - Auinash Kalsotra
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Biochemistry, University of Illinois, Urbana-Champaign, Urbana, IL, 61801, USA
- Cancer Center @ Illinois, University of Illinois, Urbana-Champaign, Urbana, IL, 61801, USA
| | - Dipanjan Pan
- Departments of Bioengineering, Materials Science and Engineering and Beckman Institute, University of Illinois at Urbana-Champaign, Mills Breast Cancer Institute, and Carle Foundation Hospital, Urbana, IL, 61801, USA
- Departments of Diagnostic Radiology and Nuclear Medicine and Pediatrics, University of Maryland Baltimore, Health Sciences Facility III, 670 W Baltimore St., Baltimore, Maryland, 21201, United States
- Department of Chemical, Biochemical and Environmental Engineering, University of Maryland Baltimore County, Interdisciplinary Health Sciences Facility, 1000 Hilltop Circle Baltimore, Maryland, 21250, United States
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8
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Pramanik S, Nandy A, Chakraborty S, Pramanik U, Nandi S, Mukherjee S. Preferential Binding of Thioflavin T to AT-Rich DNA: White Light Emission through Intramolecular Förster Resonance Energy Transfer. J Phys Chem Lett 2020; 11:2436-2442. [PMID: 32141760 DOI: 10.1021/acs.jpclett.0c00237] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Herein we report the effect of different nucleobase pair compositions on the association-induced fluorescence enhancement property of Thioflavin T (ThT), upon binding with 20 base pair long double-stranded DNA (dsDNA). Analysis of binding and decay constants along with the association (Kass) and dissociation (Kdiss) rate constants obtained from the fluctuation in the fluorescence intensity of ThT after binding with different DNA revealed selective affinity of ThT toward AT-rich dsDNA. Molecular docking also substantiates the experimental results. We also observed that addition of orange-emitting ethidium bromide (EtBr) to cyan-emitting ThT-DNA complexes leads to bright white light emission (WLE) through Förster resonance energy transfer. Additionally, the emission of white light is far greater in the case of intra-DNA strands. Besides endorsing the binding insights of ThT to AT-rich dsDNA, the present investigations open a new perspective for realizing promising WLE from two biomarkers without labeling the DNA.
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Affiliation(s)
- Srikrishna Pramanik
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal 462066, Madhya Pradesh, India
| | - Atanu Nandy
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal 462066, Madhya Pradesh, India
| | - Subhajit Chakraborty
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal 462066, Madhya Pradesh, India
| | - Ushasi Pramanik
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal 462066, Madhya Pradesh, India
| | - Somen Nandi
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal 462066, Madhya Pradesh, India
| | - Saptarshi Mukherjee
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal 462066, Madhya Pradesh, India
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9
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Alia JD, Flack JA. Unspecified verticality of Franck–Condon transitions, absorption and emission spectra of cyanine dyes, and a classically inspired approximation. RSC Adv 2020; 10:43153-43167. [PMID: 35514896 PMCID: PMC9058138 DOI: 10.1039/d0ra06774a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 11/18/2020] [Indexed: 12/19/2022] Open
Abstract
The computed vertical energy, Ev,a/f, from the equilibrium geometry of the initial electronic state is frequently considered as representative of the experimental excitation/emission energy, Eabs/fl = hc/λmax. Application of the quantum mechanical version of the Franck–Condon principle does not involve precise specification of nuclear positions before, after, or during an electronic transition. Moreover, the duration of an electronic transition is not experimentally accessible in spectra with resolved vibrational structure. It is shown that computed vibronic spectra based on TDDFT methods and application of quantum mechanical FC analysis predict Eabs = hc/λmax with a 10-fold improvement in accuracy compared to Ev,a for nine cyanine dyes. It is argued that part of the reason for accuracy when this FC analysis is compared to experiment as opposed to Ev,a/f is the unspecified verticality of transitions in the context of the quantum version of the FC principle. Classical FC transitions that preserve nuclear kinetic energy before and after an electronic transition were previously found to occur at a weighted average of final and initial electronic state molecular geometries known as the r-centroid. Inspired by this approach a qualitative method using computed vertical and adiabatic energies and the harmonic approximation is developed and applied yielding a 5-fold improvement in accuracy compared to Ev,a. This improvement results from the dominance of low frequency vibronic transitions in the cyanine dye major band. The model gives insight into the nature of the redshift when qPCR dye EvaGreen is complexed to λDNA and is applicable to the low frequency band of similar non cyanine dyes such as curcumin. It is found that the computed vibronic cyanine dye spectra from time-dependent FC analysis at 0 K and 298 K show decreased intensity at higher temperature suggestive of increased intensity with restricted motion shown when cyanine dyes are used in biomedical imaging. A 2-layer ONIOM model of the DNA minor groove indicates restricted motion of the TC-1 dye excited state in this setting indicative of enhanced fluorescence. Insight into cyanine dye λmax from quantum and classical FC principle; high accuracy with classically inspired approach.![]()
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Affiliation(s)
- Joseph D. Alia
- Division of Science and Mathematics
- University of Minnesota Morris
- USA
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10
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Mathur D, Medintz IL. The Growing Development of DNA Nanostructures for Potential Healthcare-Related Applications. Adv Healthc Mater 2019; 8:e1801546. [PMID: 30843670 PMCID: PMC9285959 DOI: 10.1002/adhm.201801546] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/17/2019] [Indexed: 12/21/2022]
Abstract
DNA self-assembly has proven to be a highly versatile tool for engineering complex and dynamic biocompatible nanostructures from the bottom up with a wide range of potential bioapplications currently being pursued. Primary among these is healthcare, with the goal of developing diagnostic, imaging, and drug delivery devices along with combinatorial theranostic devices. The path to understanding a role for DNA nanotechnology in biomedical sciences is being approached carefully and systematically, starting from analyzing the stability and immune-stimulatory properties of DNA nanostructures in physiological conditions, to estimating their accessibility and application inside cellular and model animal systems. Much remains to be uncovered but the field continues to show promising results toward developing useful biomedical devices. This review discusses some aspects of DNA nanotechnology that makes it a favorable ingredient for creating nanoscale research and biomedical devices and looks at experiments undertaken to determine its stability in vivo. This is presented in conjugation with examples of state-of-the-art developments in biomolecular sensing, imaging, and drug delivery. Finally, some of the major challenges that warrant the attention of the scientific community are highlighted, in order to advance the field into clinically relevant applications.
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Affiliation(s)
- Divita Mathur
- Center for Bio/Molecular Science and Engineering U.S. Naval Research Laboratory Code 6910 Washington DC 20375 USA
- College of Science George Mason University Fairfax VA 22030 USA
| | - Igor L. Medintz
- Center for Bio/Molecular Science and Engineering U.S. Naval Research Laboratory Code 6907 Washington DC 20375 USA
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11
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Domljanovic I, Rexen Ulven E, Ulven T, Thomsen RP, Okholm AH, Kjems J, Voss A, Taskova M, Astakhova K. Dihydropyridine Fluorophores Allow for Specific Detection of Human Antibodies in Serum. ACS OMEGA 2018; 3:7580-7586. [PMID: 30087918 PMCID: PMC6068599 DOI: 10.1021/acsomega.8b00424] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 06/26/2018] [Indexed: 05/14/2023]
Abstract
Antigen recognition by antibodies plays an important role in human biology and in the development of diseases. This interaction provides a basis for multiple diagnostic assays and is a guide for treatments. We have developed dihydropyridine-based fluorophores that form stable complexes with double-stranded DNA and upon recognition of the antibodies to DNA (anti-DNA) provide an optical response. The fluorophores described herein have advantageous optical properties compared to those of the currently available dyes making them valuable for research and clinical diagnostics. By studying a series of novel fluorophores, crucial parameters for the design were established, providing the required sensitivity and specificity in the detection of antibodies. Using these DNA-fluorophore complexes in a direct immunofluorescence assay, antibodies to DNA are specifically detected in 80 patients diagnosed with an autoimmune disease, systemic lupus erythematosus. Positivity indicated by emission change of α-(4'-O-methoxyphenyl)-2-furyl dihydropyridine strongly correlates with other disease biomarkers and autoimmune arthritis.
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Affiliation(s)
- Ivana Domljanovic
- Department
of Chemistry, Technical University of Denmark, Kemitorvet 206, 2800 Kongens Lyngby, Denmark
- Department
of Physics, Chemistry and Pharmacy, University
of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Elisabeth Rexen Ulven
- Department
of Physics, Chemistry and Pharmacy, University
of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Trond Ulven
- Department
of Drug Design and Pharmacology, University
of Copenhagen, Universitetsparken
2, 2100 Copenhagen, Denmark
| | - Rasmus P. Thomsen
- Interdisciplinary
Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Anders H. Okholm
- Interdisciplinary
Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Jørgen Kjems
- Interdisciplinary
Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
- Department
of Molecular Biology and Genetics, Aarhus
University, C.F. Møllers
Allé 3, 8000 Aarhus C, Denmark
| | - Anne Voss
- Department
of Rheumatology, Odense University Hospital, J. B. Winsløws Vej 19, 2, 5000 Odense C, Denmark
| | - Maria Taskova
- Department
of Chemistry, Technical University of Denmark, Kemitorvet 206, 2800 Kongens Lyngby, Denmark
| | - Kira Astakhova
- Department
of Chemistry, Technical University of Denmark, Kemitorvet 206, 2800 Kongens Lyngby, Denmark
- E-mail:
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12
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Nummelin S, Kommeri J, Kostiainen MA, Linko V. Evolution of Structural DNA Nanotechnology. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1703721. [PMID: 29363798 DOI: 10.1002/adma.201703721] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 09/17/2017] [Indexed: 05/24/2023]
Abstract
The research field entitled structural DNA nanotechnology emerged in the beginning of the 1980s as the first immobile synthetic nucleic acid junctions were postulated and demonstrated. Since then, the field has taken huge leaps toward advanced applications, especially during the past decade. This Progress Report summarizes how the controllable, custom, and accurate nanostructures have recently evolved together with powerful design and simulation software. Simultaneously they have provided a significant expansion of the shape space of the nanostructures. Today, researchers can select the most suitable fabrication methods, and design paradigms and software from a variety of options when creating unique DNA nanoobjects and shapes for a plethora of implementations in materials science, optics, plasmonics, molecular patterning, and nanomedicine.
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Affiliation(s)
- Sami Nummelin
- Biohybrid Materials, Department of Bioproducts and Biosystems, Aalto University, 00076, Aalto, Finland
| | - Juhana Kommeri
- Biohybrid Materials, Department of Bioproducts and Biosystems, Aalto University, 00076, Aalto, Finland
| | - Mauri A Kostiainen
- Biohybrid Materials, Department of Bioproducts and Biosystems, Aalto University, 00076, Aalto, Finland
| | - Veikko Linko
- Biohybrid Materials, Department of Bioproducts and Biosystems, Aalto University, 00076, Aalto, Finland
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13
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Huang R, He N, Li Z. Recent progresses in DNA nanostructure-based biosensors for detection of tumor markers. Biosens Bioelectron 2018. [DOI: 10.1016/j.bios.2018.02.053] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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