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Abstract
Scanning ion conductance microscopy (SICM) has emerged as a versatile tool for studies of interfaces in biology and materials science with notable utility in biophysical and electrochemical measurements. The heart of the SICM is a nanometer-scale electrolyte filled glass pipette that serves as a scanning probe. In the initial conception, manipulations of ion currents through the tip of the pipette and appropriate positioning hardware provided a route to recording micro- and nanoscopic mapping of the topography of surfaces. Subsequent advances in instrumentation, probe design, and methods significantly increased opportunities for SICM beyond recording topography. Hybridization of SICM with coincident characterization techniques such as optical microscopy and faradaic electrodes have brought SICM to the forefront as a tool for nanoscale chemical measurement for a wide range of applications. Modern approaches to SICM realize an important tool in analytical, bioanalytical, biophysical, and materials measurements, where significant opportunities remain for further exploration. In this review, we chronicle the development of SICM from the perspective of both the development of instrumentation and methods and the breadth of measurements performed.
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Affiliation(s)
- Cheng Zhu
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Kaixiang Huang
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Natasha P Siepser
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Lane A Baker
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, Indiana 47405, United States
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Gopal S, Chiappini C, Penders J, Leonardo V, Seong H, Rothery S, Korchev Y, Shevchuk A, Stevens MM. Porous Silicon Nanoneedles Modulate Endocytosis to Deliver Biological Payloads. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1806788. [PMID: 30680803 PMCID: PMC6606440 DOI: 10.1002/adma.201806788] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 01/09/2019] [Indexed: 05/18/2023]
Abstract
Owing to their ability to efficiently deliver biological cargo and sense the intracellular milieu, vertical arrays of high aspect ratio nanostructures, known as nanoneedles, are being developed as minimally invasive tools for cell manipulation. However, little is known of the mechanisms of cargo transfer across the cell membrane-nanoneedle interface. In particular, the contributions of membrane piercing, modulation of membrane permeability and endocytosis to cargo transfer remain largely unexplored. Here, combining state-of-the-art electron and scanning ion conductance microscopy with molecular biology techniques, it is shown that porous silicon nanoneedle arrays concurrently stimulate independent endocytic pathways which contribute to enhanced biomolecule delivery into human mesenchymal stem cells. Electron microscopy of the cell membrane at nanoneedle sites shows an intact lipid bilayer, accompanied by an accumulation of clathrin-coated pits and caveolae. Nanoneedles enhance the internalization of biomolecular markers of endocytosis, highlighting the concurrent activation of caveolae- and clathrin-mediated endocytosis, alongside macropinocytosis. These events contribute to the nanoneedle-mediated delivery (nanoinjection) of nucleic acids into human stem cells, which distribute across the cytosol and the endolysosomal system. This data extends the understanding of how nanoneedles modulate biological processes to mediate interaction with the intracellular space, providing indications for the rational design of improved cell-manipulation technologies.
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Affiliation(s)
- Sahana Gopal
- Department of Medicine, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
- Department of Materials, Royal School of Mines, Prince Consort Road, London, SW7 2AZ, UK
| | - Ciro Chiappini
- Department of Materials, Royal School of Mines, Prince Consort Road, London, SW7 2AZ, UK
| | - Jelle Penders
- Department of Materials, Royal School of Mines, Prince Consort Road, London, SW7 2AZ, UK
| | - Vincent Leonardo
- Department of Materials, Royal School of Mines, Prince Consort Road, London, SW7 2AZ, UK
| | - Hyejeong Seong
- Department of Materials, Royal School of Mines, Prince Consort Road, London, SW7 2AZ, UK
| | - Stephen Rothery
- Facility for Imaging by Light Microscopy, Imperial College London, Sir Alexander Fleming Building, Exhibition Road, London, SW7 2BB, UK
| | - Yuri Korchev
- Department of Medicine, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
| | - Andrew Shevchuk
- Department of Medicine, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
| | - Molly M Stevens
- Department of Materials, Royal School of Mines, Prince Consort Road, London, SW7 2AZ, UK
- Department of Bioengineering, Royal School of Mines, Prince Consort Road, London, SW7 2AZ, UK
- Institute of Biomedical Engineering, Imperial College London, Royal School of Mines, Prince Consort Road, London, SW7 2AZ, UK
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Ikeuchi T, Espulgar W, Shimizu E, Saito M, Lee JK, Dou X, Yamaguchi Y, Tamiya E. Optical microscopy imaging for the diagnosis of the pharmacological reaction of mouse embryonic stem cell-derived cardiomyocytes (mESC-CMs). Analyst 2015; 140:6500-7. [DOI: 10.1039/c5an01144b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Quantitative diagnosis of pharmacological chronotropic reactions on mouse embryonic stem cell-derived cardiomyocytes (mESC-CMs) was successfully performed by utilizing derivative imaging analysis on recorded videos.
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Affiliation(s)
- Tomohiko Ikeuchi
- Department of Applied Physics
- Graduate School of Engineering
- Osaka University
- Suita
- Japan
| | - Wilfred Espulgar
- Department of Applied Physics
- Graduate School of Engineering
- Osaka University
- Suita
- Japan
| | - Eiichi Shimizu
- Department of Applied Physics
- Graduate School of Engineering
- Osaka University
- Suita
- Japan
| | - Masato Saito
- Department of Applied Physics
- Graduate School of Engineering
- Osaka University
- Suita
- Japan
| | - Jong-Kook Lee
- Department of Cardiovascular Regenerative Medicine
- Osaka University
- Suita
- Japan
| | - Xiaoming Dou
- Photonics and Bio-medical Research Institute
- Department of Physics
- Faculty of Science
- East China University of Science and Technology (ECUST)
- Shanghai
| | - Yoshinori Yamaguchi
- Department of Applied Physics
- Graduate School of Engineering
- Osaka University
- Suita
- Japan
| | - Eiichi Tamiya
- Department of Applied Physics
- Graduate School of Engineering
- Osaka University
- Suita
- Japan
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Lab MJ, Bhargava A, Wright PT, Gorelik J. The scanning ion conductance microscope for cellular physiology. Am J Physiol Heart Circ Physiol 2013; 304:H1-11. [DOI: 10.1152/ajpheart.00499.2012] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The quest for nonoptical imaging methods that can surmount light diffraction limits resulted in the development of scanning probe microscopes. However, most of the existing methods are not quite suitable for studying biological samples. The scanning ion conductance microscope (SICM) bridges the gap between the resolution capabilities of atomic force microscope and scanning electron microscope and functional capabilities of conventional light microscope. A nanopipette mounted on a three-axis piezo-actuator, scans a sample of interest and ion current is measured between the pipette tip and the sample. The feedback control system always keeps a certain distance between the sample and the pipette so the pipette never touches the sample. At the same time pipette movement is recorded and this generates a three-dimensional topographical image of the sample surface. SICM represents an alternative to conventional high-resolution microscopy, especially in imaging topography of live biological samples. In addition, the nanopipette probe provides a host of added modalities, for example using the same pipette and feedback control for efficient approach and seal with the cell membrane for ion channel recording. SICM can be combined in one instrument with optical and fluorescent methods and allows drawing structure-function correlations. It can also be used for precise mechanical force measurements as well as vehicle to apply pressure with precision. This can be done on living cells and tissues for prolonged periods of time without them loosing viability. The SICM is a multifunctional instrument, and it is maturing rapidly and will open even more possibilities in the near future.
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Affiliation(s)
- Max J. Lab
- Imperial College London, National Heart and Lung Institute, Imperial Centre for Experimental and Translational Medicine, London, United Kingdom
| | - Anamika Bhargava
- Imperial College London, National Heart and Lung Institute, Imperial Centre for Experimental and Translational Medicine, London, United Kingdom
| | - Peter T. Wright
- Imperial College London, National Heart and Lung Institute, Imperial Centre for Experimental and Translational Medicine, London, United Kingdom
| | - Julia Gorelik
- Imperial College London, National Heart and Lung Institute, Imperial Centre for Experimental and Translational Medicine, London, United Kingdom
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The application of nanopipettes to conducting polymer fabrication, imaging and electrochemical characterization. Prog Polym Sci 2012. [DOI: 10.1016/j.progpolymsci.2012.01.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Chen CC, Zhou Y, Baker LA. Scanning ion conductance microscopy. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2012; 5:207-228. [PMID: 22524219 DOI: 10.1146/annurev-anchem-062011-143203] [Citation(s) in RCA: 142] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Scanning ion conductance microscopy (SICM) is a versatile type of scanning probe microscopy for studies in molecular biology and materials science. Recent advances in feedback and probe fabrication have greatly increased the resolution, stability, and speed of imaging. Noncontact imaging and the ability to deliver materials to localized areas have made SICM especially fruitful for studies of molecular biology, and many examples of such use have been reported. In this review, we highlight new developments in the operation of SICM and describe some of the most exciting recent studies from this growing field.
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Affiliation(s)
- Chiao-Chen Chen
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, USA
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Morris CA, Chen CC, Baker LA. Transport of redox probes through single pores measured by scanning electrochemical-scanning ion conductance microscopy (SECM-SICM). Analyst 2012; 137:2933-8. [PMID: 22278118 DOI: 10.1039/c2an16178h] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We report scanning electrochemical microscopy-scanning ion conductance microscopy (SECM-SICM) experiments that describe transport of redox active molecules which emanate from single pores of a track-etch membrane. Experiments are performed with electrodes which consist of a thin gold layer deposited on one side of a nanopipet. Subsequent insulation of the electrode with parylene results in a hybrid electrode for SECM-SICM measurements. Electrode fabrication is straightforward and highly parallel. For image collection, ionic current measured at the nanopipet both controls the position of the electrode with respect to the membrane surface and reports the local conductance in the vicinity of the nanopipet, while faradaic current measured at the Au electrode reports the presence of redox-active molecules. Application of a transmembrane potential difference affords additional control over migration of charged species across the membrane.
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Affiliation(s)
- Celeste A Morris
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, USA
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Shevchuk AI, Novak P, Takahashi Y, Clarke R, Miragoli M, Babakinejad B, Gorelik J, Korchev YE, Klenerman D. Realizing the biological and biomedical potential of nanoscale imaging using a pipette probe. Nanomedicine (Lond) 2011; 6:565-75. [DOI: 10.2217/nnm.10.154] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Cells naturally operate on the nanoscale level, with molecules combining together to form complex molecular machines, which can work together to enable normal cell function or go wrong as in the case of many diseases. Visualizing these key processes on the nanoscale has been difficult and two main approaches have been used to date; nanometer resolution imaging of fixed cells using electron microscopy, or imaging live cells using optical or fluorescence microscopy, with a resolution of a few hundred nanometers. Scanning probe microscopy has the potential to allow live cells to be imaged at nanoscale resolution and a noncontact method based on the use of a nanopipette probe has been developed over the last 10 years that allows both topographic and functional imaging. The rapid progress in this area of research over the last 4 years is reviewed in this article, which shows that imaging of complex cellular structures and tissues is now possible and that these methods are now sufficiently mature to provide new insights into important diseases.
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Affiliation(s)
| | - Pavel Novak
- Division of Medicine, Imperial College London, London W12 0NN, UK
- National Heart & Lung Institute, Department of Cardiac Medicine, Imperial College London, London SW3 6LY, UK
| | | | - Richard Clarke
- Department of Chemistry, Cambridge University, Cambridge CB2 1EW, UK
| | - Michele Miragoli
- National Heart & Lung Institute, Department of Cardiac Medicine, Imperial College London, London SW3 6LY, UK
| | | | - Julia Gorelik
- National Heart & Lung Institute, Department of Cardiac Medicine, Imperial College London, London SW3 6LY, UK
| | - Yuri E Korchev
- Division of Medicine, Imperial College London, London W12 0NN, UK
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Miragoli M, Moshkov A, Novak P, Shevchuk A, Nikolaev VO, El-Hamamsy I, Potter CMF, Wright P, Kadir SHSA, Lyon AR, Mitchell JA, Chester AH, Klenerman D, Lab MJ, Korchev YE, Harding SE, Gorelik J. Scanning ion conductance microscopy: a convergent high-resolution technology for multi-parametric analysis of living cardiovascular cells. J R Soc Interface 2011; 8:913-25. [PMID: 21325316 PMCID: PMC3104336 DOI: 10.1098/rsif.2010.0597] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Cardiovascular diseases are complex pathologies that include alterations of various cell functions at the levels of intact tissue, single cells and subcellular signalling compartments. Conventional techniques to study these processes are extremely divergent and rely on a combination of individual methods, which usually provide spatially and temporally limited information on single parameters of interest. This review describes scanning ion conductance microscopy (SICM) as a novel versatile technique capable of simultaneously reporting various structural and functional parameters at nanometre resolution in living cardiovascular cells at the level of the whole tissue, single cells and at the subcellular level, to investigate the mechanisms of cardiovascular disease. SICM is a multimodal imaging technology that allows concurrent and dynamic analysis of membrane morphology and various functional parameters (cell volume, membrane potentials, cellular contraction, single ion-channel currents and some parameters of intracellular signalling) in intact living cardiovascular cells and tissues with nanometre resolution at different levels of organization (tissue, cellular and subcellular levels). Using this technique, we showed that at the tissue level, cell orientation in the inner and outer aortic arch distinguishes atheroprone and atheroprotected regions. At the cellular level, heart failure leads to a pronounced loss of T-tubules in cardiac myocytes accompanied by a reduction in Z-groove ratio. We also demonstrated the capability of SICM to measure the entire cell volume as an index of cellular hypertrophy. This method can be further combined with fluorescence to simultaneously measure cardiomyocyte contraction and intracellular calcium transients or to map subcellular localization of membrane receptors coupled to cyclic adenosine monophosphate production. The SICM pipette can be used for patch-clamp recordings of membrane potential and single channel currents. In conclusion, SICM provides a highly informative multimodal imaging platform for functional analysis of the mechanisms of cardiovascular diseases, which should facilitate identification of novel therapeutic strategies.
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Affiliation(s)
- Michele Miragoli
- Cardiovascular Science, National Heart and Lung Institute, Imperial College London, , Dovehouse Street, London SW36LY, UK
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Sun T, Donoghue PS, Higginson JR, Gadegaard N, Barnett SC, Riehle MO. The interactions of astrocytes and fibroblasts with defined pore structures in static and perfusion cultures. Biomaterials 2010; 32:2021-31. [PMID: 21163522 PMCID: PMC3440599 DOI: 10.1016/j.biomaterials.2010.11.046] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2010] [Accepted: 11/14/2010] [Indexed: 11/25/2022]
Abstract
Open pores to maintain nutrient diffusion and waste removal after cell colonization are crucial for the successful application of constructs based on assembled membranes, in our case tubular scaffolds made of ɛ-polycaprolactone (PCL), for use in tissue engineering. Due to the complex three-dimensional structure and large size of such scaffolds needed for transplantable tissues, it is difficult to investigate the cell–pore interactions in situ. Therefore miniaturized bioreactors inside Petri dishes (30 mm in diameter), containing porous PCL or poly-dimethylsiloxane (PDMS) membranes, were developed to allow the interactions of different cells with defined pores to be investigated in situ during both static and perfusion cultures. Investigation of two different cell types (fibroblasts and cortical astrocytes) and how they interact with a range of pores (100–350 μm in diameter) for up to 50 days indicated that the cells either ‘covered’ or ‘bridged’ the pores. Three distinct behaviors were observed in the way cortical astrocytes interacted with pores, while fibroblasts were able to quickly bridge the pores based on consistent “joint efforts”. Our studies demonstrate that the distinct pore sealing behaviors of both cell types were influenced by pore size, initial cell density and culture period, but not by medium perfusion within the range of shear forces investigated. These findings form important basic data about the usability of pores within scaffolds that could inform the design and fabrication of suitable scaffolds for various applications in tissue engineering.
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Affiliation(s)
- Tao Sun
- Centre for Cell Engineering, Institute of Molecular, Cellular and Systems Biology, College of Medical, Veterinary and Life Sciences, Joseph Black Building, University of Glasgow, Glasgow G12 8QQ, UK.
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Tantra R, Knight A. Cellular uptake and intracellular fate of engineered nanoparticles: a review on the application of imaging techniques. Nanotoxicology 2010; 5:381-92. [PMID: 20846020 DOI: 10.3109/17435390.2010.512987] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The use of imaging tools to probe nanoparticle-cell interactions will be crucial to elucidating the mechanisms of nanoparticle-induced toxicity. Of particular interest are mechanisms associated with cell penetration, translocation and subsequent accumulation inside the cell, or in cellular compartments. The objective of the present paper is to review imaging techniques that have been previously used in order to assess such interactions, and new techniques with the potential to be useful in this area. In order to identify the most suitable techniques, they were evaluated and matched against a list of evaluation criteria. We conclude that limitations exist with all of the techniques and the ultimate choice will thus depend on the needs of end users, and their particular application. The state-of-the-art techniques appear to have the least limitations, despite the fact that they are not so well established and still far from being routine. For example, super-resolution microscopy techniques appear to have many advantages for understanding the details of the interactions between nanoparticles and cells. Future research should concentrate on further developing or improving such novel techniques, to include the development of standardized methods and appropriate reference materials.
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Affiliation(s)
- Ratna Tantra
- National Physical Laboratory, Teddington, Middlesex , UK.
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Morris CA, Friedman AK, Baker LA. Applications of nanopipettes in the analytical sciences. Analyst 2010; 135:2190-202. [DOI: 10.1039/c0an00156b] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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