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Park S, Nguyen DV, Kang L. Immobilized nanoneedle-like structures for intracellular delivery, biosensing and cellular surgery. Nanomedicine (Lond) 2021; 16:335-349. [PMID: 33533658 DOI: 10.2217/nnm-2020-0337] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The rapid advancements of nanotechnology over the recent years have reformed the methods used for treating human diseases. Nanostructures including nanoneedles, nanorods, nanowires, nanofibers and nanotubes have exhibited their potential roles in drug delivery, biosensing, cancer therapy, regenerative medicine and intracellular surgery. These high aspect ratio structures enhance targeted drug delivery with spatiotemporal control while also demonstrating their role as an efficient intracellular biosensor with minimal invasiveness. This review discusses the history and emergence of these nanostructures and their fabrication methods. This review also provides an overview of the different applications of nanoneedle systems, further highlighting the importance of greater investigation into these nanostructures for future medicine.
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Affiliation(s)
- Sol Park
- School of Pharmacy, Faculty of Medicine & Health, University of Sydney, NSW 2006, Australia
| | - Duc-Viet Nguyen
- Nusmetics Pte. Ltd, i4 building, 3 Research Link, Singapore 117602, Republic of Singapore
| | - Lifeng Kang
- School of Pharmacy, Faculty of Medicine & Health, University of Sydney, NSW 2006, Australia
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De Martino S, Zhang W, Klausen L, Lou HY, Li X, Alfonso FS, Cavalli S, Netti PA, Santoro F, Cui B. Dynamic Manipulation of Cell Membrane Curvature by Light-Driven Reshaping of Azopolymer. NANO LETTERS 2020; 20:577-584. [PMID: 31846332 PMCID: PMC7207080 DOI: 10.1021/acs.nanolett.9b04307] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Local curvatures on the cell membrane serve as signaling hubs that promote curvature-dependent protein interactions and modulate a variety of cellular processes including endocytosis, exocytosis, and the actin cytoskeleton. However, precisely controlling the location and the degree of membrane curvature in live cells has not been possible until recently, where studies show that nanofabricated vertical structures on a substrate can imprint their shapes on the cell membrane to induce well-defined curvatures in adherent cells. Nevertheless, the intrinsic static nature of these engineered nanostructures prevents dynamic modulation of membrane curvatures. In this work, we engineer light-responsive polymer structures whose shape can be dynamically modulated by light and thus change the induced-membrane curvatures on-demand. Specifically, we fabricate three-dimensional azobenzene-based polymer structures that change from a vertical pillar to an elongated vertical bar shape upon green light illumination. We observe that U2OS cells cultured on azopolymer nanostructures rapidly respond to the topographical change of the substrate underneath. The dynamically induced high membrane curvatures at bar ends promote local accumulation of actin fibers and actin nucleator Arp2/3 complex. The ability to dynamically manipulate the membrane curvature and analyze protein response in real-time provides a new way to study curvature-dependent processes in live cells.
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Affiliation(s)
- Selene De Martino
- Center for Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, Largo Barsanti e Matteucci, 53, 80125 Napoli, Italy
- Dipartimento di Ingegneria Chimica dei Materiali e della Produzione Industriale, DICMAPI, Università degli Studi di Napoli Federico II, Piazzale Tecchio, 80, 80125 Napoli, Italy
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, United States
| | - Wei Zhang
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, United States
| | - Lasse Klausen
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, United States
| | - Hsin-Ya Lou
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, United States
| | - Xiao Li
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, United States
| | - Felix S. Alfonso
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, United States
| | - Silvia Cavalli
- Center for Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, Largo Barsanti e Matteucci, 53, 80125 Napoli, Italy
| | - Paolo A. Netti
- Center for Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, Largo Barsanti e Matteucci, 53, 80125 Napoli, Italy
- Dipartimento di Ingegneria Chimica dei Materiali e della Produzione Industriale, DICMAPI, Università degli Studi di Napoli Federico II, Piazzale Tecchio, 80, 80125 Napoli, Italy
| | - Francesca Santoro
- Center for Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, Largo Barsanti e Matteucci, 53, 80125 Napoli, Italy
- Corresponding Authors:.
| | - Bianxiao Cui
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, United States
- Corresponding Authors:.
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