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Wong SH, Kopf SN, Caroprese V, Zosso Y, Morzy D, Bastings MMC. Modulating the DNA/Lipid Interface through Multivalent Hydrophobicity. NANO LETTERS 2024; 24:11210-11216. [PMID: 39054892 DOI: 10.1021/acs.nanolett.4c02564] [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: 07/27/2024]
Abstract
Lipids and nucleic acids are two of the most abundant components of our cells, and both molecules are widely used as engineering materials for nanoparticles. Here, we present a systematic study of how hydrophobic modifications can be employed to modulate the DNA/lipid interface. Using a series of DNA anchors with increasing hydrophobicity, we quantified the capacity to immobilize double-stranded (ds) DNA to lipid membranes in the liquid phase. Contrary to electrostatic effects, hydrophobic anchors are shown to be phase-independent if sufficiently hydrophobic. For weak anchors, the overall hydrophobicity can be enhanced following the concept of multivalency. Finally, we demonstrate that structural flexibility and anchor orientation overrule the effect of multivalency, emphasizing the need for careful scaffold design if strong interfaces are desired. Together, our findings guide the design of tailored DNA/membrane interfaces, laying the groundwork for advancements in biomaterials, drug delivery vehicles, and synthetic membrane mimics for biomedical research and nanomedicine.
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Affiliation(s)
- Siu Ho Wong
- Programmable Biomaterials Laboratory, Institute of Materials, School of Engineering, Ecole Polytechnique Fédérale Lausanne, Lausanne 1015, Switzerland
| | - Sarina Nicole Kopf
- Programmable Biomaterials Laboratory, Institute of Materials, School of Engineering, Ecole Polytechnique Fédérale Lausanne, Lausanne 1015, Switzerland
| | - Vincenzo Caroprese
- Programmable Biomaterials Laboratory, Institute of Materials, School of Engineering, Ecole Polytechnique Fédérale Lausanne, Lausanne 1015, Switzerland
| | - Yann Zosso
- Programmable Biomaterials Laboratory, Institute of Materials, School of Engineering, Ecole Polytechnique Fédérale Lausanne, Lausanne 1015, Switzerland
| | - Diana Morzy
- Programmable Biomaterials Laboratory, Institute of Materials, School of Engineering, Ecole Polytechnique Fédérale Lausanne, Lausanne 1015, Switzerland
| | - Maartje M C Bastings
- Programmable Biomaterials Laboratory, Institute of Materials, School of Engineering, Ecole Polytechnique Fédérale Lausanne, Lausanne 1015, Switzerland
- Interfaculty Bioengineering Institute, School of Engineering, Ecole Polytechnique Fédérale Lausanne, Lausanne 1015, Switzerland
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Peng Z, Kanno S, Shimba K, Miyamoto Y, Yagi T. Synthetic DNA nanopores for direct molecular transmission between lipid vesicles. NANOSCALE 2024; 16:12174-12183. [PMID: 38842009 DOI: 10.1039/d4nr01344a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Lipid vesicles hold potential as artificial cells in bottom-up synthetic biology, and as tools in drug delivery and biosensing. Transmitting molecular signals is a key function for vesicle-based systems. One strategy to achieve this function is by releasing molecular signals from vesicles through nanopores. Nevertheless, in this strategy, an excess of molecular signals may be required to reach the targets, due to the dispersion of the signals during diffusion. The key to achieving the efficient utilization of signals is to shorten the distance between the sender vesicle and the target. Here, we present a pair of DNA nanopores that can connect and form a direct molecular pathway between vesicles. The nanopores are self-assembled from nine single DNA strands, including six 14-nucleotide single-stranded overhangs as sticky-end segments, enabling them to bind with each other. Incorporating nanopores shortens the distance between different populations of vesicles, allowing less diffusion of molecules into bulk solution. To further reduce the loss of molecules, a DNA nanocap is added to one of the nanopore's openings. The nanocap can be removed through the toehold-mediated DNA strand displacement when the nanopore meets its counterpart. Our DNA nanopores provide a novel molecular transmission tool to lipid vesicles-based systems.
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Affiliation(s)
- Zugui Peng
- School of Engineering, Tokyo Institute of Technology, 403, Ishikawadai Bldg. 3, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
| | - Shoichiro Kanno
- School of Engineering, Tokyo Institute of Technology, 403, Ishikawadai Bldg. 3, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
| | - Kenta Shimba
- Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8563, Japan
| | - Yoshitaka Miyamoto
- School of Engineering, Tokyo Institute of Technology, 403, Ishikawadai Bldg. 3, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
- Department of Maternal-Fetal Biology, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo 157-8535, Japan
| | - Tohru Yagi
- School of Engineering, Tokyo Institute of Technology, 403, Ishikawadai Bldg. 3, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
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Rodríguez-Franco HJ, Weiden J, Bastings MMC. Stabilizing Polymer Coatings Alter the Protein Corona of DNA Origami and Can Be Engineered to Bias the Cellular Uptake. ACS POLYMERS AU 2023; 3:344-353. [PMID: 37576710 PMCID: PMC10416322 DOI: 10.1021/acspolymersau.3c00009] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 05/18/2023] [Accepted: 05/22/2023] [Indexed: 08/15/2023]
Abstract
With DNA-based nanomaterials being designed for applications in cellular environments, the need arises to accurately understand their surface interactions toward biological targets. As for any material exposed to protein-rich cell culture conditions, a protein corona will establish around DNA nanoparticles, potentially altering the a-priori designed particle function. Here, we first set out to identify the protein corona around DNA origami nanomaterials, taking into account the application of stabilizing block co-polymer coatings (oligolysine-1kPEG or oligolysine-5kPEG) widely used to ensure particle integrity. By implementing a label-free methodology, the distinct polymer coating conditions show unique protein profiles, predominantly defined by differences in the molecular weight and isoelectric point of the adsorbed proteins. Interestingly, none of the applied coatings reduced the diversity of the proteins detected within the specific coronae. We then biased the protein corona through pre-incubation with selected proteins and show significant changes in the cell uptake. Our study contributes to a deeper understanding of the complex interplay between DNA nanomaterials, proteins, and cells at the bio-interface.
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Affiliation(s)
- Hugo J. Rodríguez-Franco
- Programmable Biomaterials Laboratory,
Institute of Materials, Interfaculty Bioengineering Institute, School
of Engineering, Ecole Polytechnique Fédérale
Lausanne, Lausanne 1015, Switzerland
| | - Jorieke Weiden
- Programmable Biomaterials Laboratory,
Institute of Materials, Interfaculty Bioengineering Institute, School
of Engineering, Ecole Polytechnique Fédérale
Lausanne, Lausanne 1015, Switzerland
| | - Maartje M. C. Bastings
- Programmable Biomaterials Laboratory,
Institute of Materials, Interfaculty Bioengineering Institute, School
of Engineering, Ecole Polytechnique Fédérale
Lausanne, Lausanne 1015, Switzerland
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Cervantes-Salguero K, Gutiérrez Fosado YA, Megone W, Gautrot JE, Palma M. Programmed Self-Assembly of DNA Nanosheets with Discrete Single-Molecule Thickness and Interfacial Mechanics: Design, Simulation, and Characterization. Molecules 2023; 28:molecules28093686. [PMID: 37175096 PMCID: PMC10180480 DOI: 10.3390/molecules28093686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/05/2023] [Accepted: 04/17/2023] [Indexed: 05/15/2023] Open
Abstract
DNA is programmed to hierarchically self-assemble into superstructures spanning from nanometer to micrometer scales. Here, we demonstrate DNA nanosheets assembled out of a rationally designed flexible DNA unit (F-unit), whose shape resembles a Feynman diagram. F-units were designed to self-assemble in two dimensions and to display a high DNA density of hydrophobic moieties. oxDNA simulations confirmed the planarity of the F-unit. DNA nanosheets with a thickness of a single DNA duplex layer and with large coverage (at least 30 μm × 30 μm) were assembled from the liquid phase at the solid/liquid interface, as unambiguously evidenced by atomic force microscopy imaging. Interestingly, single-layer nanodiscs formed in solution at low DNA concentrations. DNA nanosheet superstructures were further assembled at liquid/liquid interfaces, as demonstrated by the fluorescence of a double-stranded DNA intercalator. Moreover, the interfacial mechanical properties of the nanosheet superstructures were measured as a response to temperature changes, demonstrating the control of interfacial shear mechanics based on DNA nanostructure engineering. The rational design of the F-unit, along with the presented results, provide an avenue toward the controlled assembly of reconfigurable/responsive nanosheets and membranes at liquid/liquid interfaces, to be potentially used in the characterization of biomechanical processes and materials transport.
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Affiliation(s)
- Keitel Cervantes-Salguero
- Department of Chemistry, School of Physical and Chemical Sciences, Queen Mary University of London, London E1 4NS, UK
| | | | - William Megone
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Julien E Gautrot
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Matteo Palma
- Department of Chemistry, School of Physical and Chemical Sciences, Queen Mary University of London, London E1 4NS, UK
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