1
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Hu T, Kumar AR, Luo Y, Tay A. Automating CAR-T Transfection with Micro and Nano-Technologies. SMALL METHODS 2024; 8:e2301300. [PMID: 38054597 DOI: 10.1002/smtd.202301300] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 11/15/2023] [Indexed: 12/07/2023]
Abstract
Cancer poses a significant health challenge, with traditional treatments like surgery, radiotherapy, and chemotherapy often lacking in cell specificity and long-term curative potential. Chimeric antigen receptor T cell (CAR-T) therapy,utilizing genetically engineered T cells to target cancer cells, is a promising alternative. However, its high cost limits widespread application. CAR-T manufacturing process encompasses three stages: cell isolation and activation, transfection, and expansion.While the first and last stages have straightforward, commercially available automation technologies, the transfection stage lags behind. Current automated transfection relies on viral vectors or bulk electroporation, which have drawbacks such as limited cargo capacity and significant cell disturbance. Conversely, micro and nano-tool methods offer higher throughput and cargo flexibility, yet their automation remains underexplored.In this perspective, the progress in micro and nano-engineering tools for CAR-T transfection followed by a discussion to automate them is described. It is anticipated that this work can inspire the community working on micro and nano transfection techniques to examine how their protocols can be automated to align with the growing interest in automating CAR-T manufacturing.
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Affiliation(s)
- Tianmu Hu
- Engineering Science Programme, National University of Singapore, Singapore, 117575, Singapore
| | - Arun Rk Kumar
- Department of Biomedical Engineering, National University of Singapore, Singapore, 117583, Singapore
- Institute for Health Innovation & Technology, National University of Singapore, Singapore, 117599, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore
| | - Yikai Luo
- Department of Biomedical Engineering, National University of Singapore, Singapore, 117583, Singapore
- Institute for Health Innovation & Technology, National University of Singapore, Singapore, 117599, Singapore
| | - Andy Tay
- Department of Biomedical Engineering, National University of Singapore, Singapore, 117583, Singapore
- Institute for Health Innovation & Technology, National University of Singapore, Singapore, 117599, Singapore
- Tissue Engineering Programme, National University of Singapore, Singapore, 117510, Singapore
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2
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Sait R, Al-Jawhari H, Ganash A, Wustoni S, Chen L, Hedhili MN, Wehbe N, Hussein D, Alhowity A, Baeesa S, Bangash M, Abuzenadah A, Inal S, Cross R. Electrochemical Performance of Biocompatible TiC Films Deposited through Nonreactive RF Magnetron Sputtering for Neural Interfacing. ACS Biomater Sci Eng 2024; 10:391-404. [PMID: 38095213 DOI: 10.1021/acsbiomaterials.3c01371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
The efficacy of neural electrode stimulation and recording hinges significantly on the choice of a neural electrode interface material. Transition metal carbides (TMCs), particularly titanium carbide (TiC), have demonstrated exceptional chemical stability and high electrical conductivity. Yet, the fabrication of TiC thin films and their potential application as neural electrode interfaces remains relatively unexplored. Herein, we present a systematic examination of TiC thin films synthesized through nonreactive radio frequency (RF) magnetron sputtering. TiC films were optimized toward high areal capacitance, low impedance, and stable electrochemical cyclability. We varied the RF power and deposition pressure to pinpoint the optimal properties, focusing on the deposition rate, surface roughness, crystallinity, and elemental composition to achieve high areal capacitance and low impedance. The best-performing TiC film showed an areal capacitance of 475 μF/cm2 with a capacitance retention of 93% after 5000 cycles. In addition, the electrochemical performance of the optimum film under varying scanning rates demonstrated a stable electrochemical performance even under dynamic and fast-changing stimulation conditions. Furthermore, the in vitro cell culture for 3 weeks revealed excellent biocompatibility, promoting cell growth compared with a control substrate. This work presents a novel contribution, highlighting the potential of sputtered TiC thin films as robust neural electrode interface materials.
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Affiliation(s)
- Roaa Sait
- Faculty of Science, Department of Physics, King Abdulaziz University, Building 7, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Hala Al-Jawhari
- Faculty of Science, Department of Physics, King Abdulaziz University, Building 7, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Aisha Ganash
- Faculty of Science, Department of Physics, King Abdulaziz University, Building 7, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Shofarul Wustoni
- Organic Bioelectronics Laboratory, Biological Science and Engineering Division (BESE), King Abdullah University of Science and Engineering (KAUST), Building 2, Thuwal 23955-6900, Saudi Arabia
| | - Long Chen
- Imaging and Characterization Core Laboratories, King Abdullah University of Science and Engineering (KAUST), Building 3, Thuwal 23955-6900, Saudi Arabia
| | - Mohamed Nejib Hedhili
- Imaging and Characterization Core Laboratories, King Abdullah University of Science and Engineering (KAUST), Building 3, Thuwal 23955-6900, Saudi Arabia
| | - Nimer Wehbe
- Imaging and Characterization Core Laboratories, King Abdullah University of Science and Engineering (KAUST), Building 3, Thuwal 23955-6900, Saudi Arabia
| | - Deema Hussein
- King Fahd Medical Research Center, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia
| | - Alazouf Alhowity
- King Fahd Medical Research Center, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia
| | - Saleh Baeesa
- King Fahd Medical Research Center, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia
| | - Mohammed Bangash
- King Fahd Medical Research Center, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia
| | - Adel Abuzenadah
- King Fahd Medical Research Center, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia
| | - Sahika Inal
- Organic Bioelectronics Laboratory, Biological Science and Engineering Division (BESE), King Abdullah University of Science and Engineering (KAUST), Building 2, Thuwal 23955-6900, Saudi Arabia
| | - Richard Cross
- Emerging Technology Research Center, De Montfort University, The Gateway, Leicester LE1 9BH, United Kingdom
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3
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Mahaling B, Low SWY, Ch S, Addi UR, Ahmad B, Connor TB, Mohan RR, Biswas S, Chaurasia SS. Next-Generation Nanomedicine Approaches for the Management of Retinal Diseases. Pharmaceutics 2023; 15:2005. [PMID: 37514191 PMCID: PMC10383092 DOI: 10.3390/pharmaceutics15072005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/17/2023] [Accepted: 07/20/2023] [Indexed: 07/30/2023] Open
Abstract
Retinal diseases are one of the leading causes of blindness globally. The mainstay treatments for these blinding diseases are laser photocoagulation, vitrectomy, and repeated intravitreal injections of anti-vascular endothelial growth factor (VEGF) or steroids. Unfortunately, these therapies are associated with ocular complications like inflammation, elevated intraocular pressure, retinal detachment, endophthalmitis, and vitreous hemorrhage. Recent advances in nanomedicine seek to curtail these limitations, overcoming ocular barriers by developing non-invasive or minimally invasive delivery modalities. These modalities include delivering therapeutics to specific cellular targets in the retina, providing sustained delivery of drugs to avoid repeated intravitreal injections, and acting as a scaffold for neural tissue regeneration. These next-generation nanomedicine approaches could potentially revolutionize the treatment landscape of retinal diseases. This review describes the availability and limitations of current treatment strategies and highlights insights into the advancement of future approaches using next-generation nanomedicines to manage retinal diseases.
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Affiliation(s)
- Binapani Mahaling
- Ocular Immunology and Angiogenesis Lab, Department of Ophthalmology and Visual Sciences, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Shermaine W Y Low
- Ocular Immunology and Angiogenesis Lab, Department of Ophthalmology and Visual Sciences, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Sanjay Ch
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad 500078, India
| | - Utkarsh R Addi
- Ocular Immunology and Angiogenesis Lab, Department of Ophthalmology and Visual Sciences, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Baseer Ahmad
- Ocular Immunology and Angiogenesis Lab, Department of Ophthalmology and Visual Sciences, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Thomas B Connor
- Ocular Immunology and Angiogenesis Lab, Department of Ophthalmology and Visual Sciences, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Rajiv R Mohan
- One-Health One-Medicine Ophthalmology and Vision Research Program, University of Missouri, Columbia, MO 65211, USA
| | - Swati Biswas
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad 500078, India
| | - Shyam S Chaurasia
- Ocular Immunology and Angiogenesis Lab, Department of Ophthalmology and Visual Sciences, Medical College of Wisconsin, Milwaukee, WI 53226, USA
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI 53226, USA
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4
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Shyamasundar S, Ramya S, Kandilya D, Srinivasan DK, Bay BH, Ansari SA, Dheen ST. Maternal Diabetes Deregulates the Expression of Mecp2 via miR-26b-5p in Mouse Embryonic Neural Stem Cells. Cells 2023; 12:1516. [PMID: 37296636 PMCID: PMC10252249 DOI: 10.3390/cells12111516] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 05/22/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023] Open
Abstract
Maternal diabetes has been associated with a greater risk of neurodevelopmental disorders in offspring. It has been established that hyperglycemia alters the expression of genes and microRNAs (miRNAs) regulating the fate of neural stem cells (NSCs) during brain development. In this study, the expression of methyl-CpG-binding protein-2 (Mecp2), a global chromatin organizer and a crucial regulator of synaptic proteins, was analyzed in NSCs obtained from the forebrain of embryos of diabetic mice. Mecp2 was significantly downregulated in NSCs derived from embryos of diabetic mice when compared to controls. miRNA target prediction revealed that the miR-26 family could regulate the expression of Mecp2, and further validation confirmed that Mecp2 is a target of miR-26b-5p. Knockdown of Mecp2 or overexpression of miR-26b-5p altered the expression of tau protein and other synaptic proteins, suggesting that miR-26b-5p alters neurite outgrowth and synaptogenesis via Mecp2. This study revealed that maternal diabetes upregulates the expression of miR-26b-5p in NSCs, resulting in downregulation of its target, Mecp2, which in turn perturbs neurite outgrowth and expression of synaptic proteins. Overall, hyperglycemia dysregulates synaptogenesis that may manifest as neurodevelopmental disorders in offspring from diabetic pregnancy.
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Affiliation(s)
- Sukanya Shyamasundar
- Department of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117594, Singapore
| | - Seshadri Ramya
- Department of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117594, Singapore
| | - Deepika Kandilya
- Department of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117594, Singapore
| | - Dinesh Kumar Srinivasan
- Department of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117594, Singapore
| | - Boon Huat Bay
- Department of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117594, Singapore
| | - Suraiya Anjum Ansari
- Department of Biochemistry and Molecular Biology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - S Thameem Dheen
- Department of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117594, Singapore
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5
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Rowland C, Smith JH, Moslehi S, Harland B, Dalrymple-Alford J, Taylor RP. Neuron arbor geometry is sensitive to the limited-range fractal properties of their dendrites. FRONTIERS IN NETWORK PHYSIOLOGY 2023; 3:1072815. [PMID: 36926542 PMCID: PMC10013056 DOI: 10.3389/fnetp.2023.1072815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 01/10/2023] [Indexed: 01/26/2023]
Abstract
Fractal geometry is a well-known model for capturing the multi-scaled complexity of many natural objects. By analyzing three-dimensional images of pyramidal neurons in the rat hippocampus CA1 region, we examine how the individual dendrites within the neuron arbor relate to the fractal properties of the arbor as a whole. We find that the dendrites reveal unexpectedly mild fractal characteristics quantified by a low fractal dimension. This is confirmed by comparing two fractal methods-a traditional "coastline" method and a novel method that examines the dendrites' tortuosity across multiple scales. This comparison also allows the dendrites' fractal geometry to be related to more traditional measures of their complexity. In contrast, the arbor's fractal characteristics are quantified by a much higher fractal dimension. Employing distorted neuron models that modify the dendritic patterns, deviations from natural dendrite behavior are found to induce large systematic changes in the arbor's structure and its connectivity within a neural network. We discuss how this sensitivity to dendrite fractality impacts neuron functionality in terms of balancing neuron connectivity with its operating costs. We also consider implications for applications focusing on deviations from natural behavior, including pathological conditions and investigations of neuron interactions with artificial surfaces in human implants.
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Affiliation(s)
- Conor Rowland
- Physics Department, University of Oregon, Eugene, OR, United States
| | - Julian H Smith
- Physics Department, University of Oregon, Eugene, OR, United States
| | - Saba Moslehi
- Physics Department, University of Oregon, Eugene, OR, United States
| | - Bruce Harland
- School of Pharmacy, University of Auckland, Auckland, New Zealand
| | - John Dalrymple-Alford
- School of Psychology, Speech and Hearing, University of Canterbury, Christchurch, New Zealand.,New Zealand Brain Research Institute, Christchurch, New Zealand
| | - Richard P Taylor
- Physics Department, University of Oregon, Eugene, OR, United States
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6
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Moslehi S, Rowland C, Smith JH, Griffiths W, Watterson WJ, Niell CM, Alemán BJ, Perez MT, Taylor RP. Comparison of fractal and grid electrodes for studying the effects of spatial confinement on dissociated retinal neuronal and glial behavior. Sci Rep 2022; 12:17513. [PMID: 36266414 PMCID: PMC9584887 DOI: 10.1038/s41598-022-21742-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 09/30/2022] [Indexed: 01/12/2023] Open
Abstract
Understanding the impact of the geometry and material composition of electrodes on the survival and behavior of retinal cells is of importance for both fundamental cell studies and neuromodulation applications. We investigate how dissociated retinal cells from C57BL/6J mice interact with electrodes made of vertically-aligned carbon nanotubes grown on silicon dioxide substrates. We compare electrodes with different degrees of spatial confinement, specifically fractal and grid electrodes featuring connected and disconnected gaps between the electrodes, respectively. For both electrodes, we find that neuron processes predominantly accumulate on the electrode rather than the gap surfaces and that this behavior is strongest for the grid electrodes. However, the 'closed' character of the grid electrode gaps inhibits glia from covering the gap surfaces. This lack of glial coverage for the grids is expected to have long-term detrimental effects on neuronal survival and electrical activity. In contrast, the interconnected gaps within the fractal electrodes promote glial coverage. We describe the differing cell responses to the two electrodes and hypothesize that there is an optimal geometry that maximizes the positive response of both neurons and glia when interacting with electrodes.
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Affiliation(s)
- Saba Moslehi
- grid.170202.60000 0004 1936 8008Physics Department, 1371 University of Oregon, Eugene, OR 97403 USA ,grid.170202.60000 0004 1936 8008Materials Science Institute, 1252 University of Oregon, Eugene, OR 97403 USA
| | - Conor Rowland
- grid.170202.60000 0004 1936 8008Physics Department, 1371 University of Oregon, Eugene, OR 97403 USA ,grid.170202.60000 0004 1936 8008Materials Science Institute, 1252 University of Oregon, Eugene, OR 97403 USA
| | - Julian H. Smith
- grid.170202.60000 0004 1936 8008Physics Department, 1371 University of Oregon, Eugene, OR 97403 USA ,grid.170202.60000 0004 1936 8008Materials Science Institute, 1252 University of Oregon, Eugene, OR 97403 USA
| | - Willem Griffiths
- grid.170202.60000 0004 1936 8008Department of Biology, 1210 University of Oregon, Eugene, OR 97403 USA
| | - William J. Watterson
- grid.170202.60000 0004 1936 8008Physics Department, 1371 University of Oregon, Eugene, OR 97403 USA ,grid.170202.60000 0004 1936 8008Materials Science Institute, 1252 University of Oregon, Eugene, OR 97403 USA
| | - Cristopher M. Niell
- grid.170202.60000 0004 1936 8008Department of Biology, 1210 University of Oregon, Eugene, OR 97403 USA ,grid.170202.60000 0004 1936 8008Institute of Neuroscience, 1254 University of Oregon, Eugene, OR 97403 USA
| | - Benjamín J. Alemán
- grid.170202.60000 0004 1936 8008Physics Department, 1371 University of Oregon, Eugene, OR 97403 USA ,grid.170202.60000 0004 1936 8008Materials Science Institute, 1252 University of Oregon, Eugene, OR 97403 USA ,grid.170202.60000 0004 1936 8008Oregon Center for Optical, Molecular and Quantum Science, 1274 University of Oregon, Eugene, OR 97403 USA ,grid.170202.60000 0004 1936 8008Phil and Penny Knight Campus for Accelerating Scientific Impact, 1505 University of Oregon, Franklin Blvd., Eugene, OR 97403 USA
| | - Maria-Thereza Perez
- grid.4514.40000 0001 0930 2361Division of Ophthalmology, Department of Clinical Sciences Lund, Lund University, 221 84 Lund, Sweden ,grid.4514.40000 0001 0930 2361NanoLund, Lund University, 221 00 Lund, Sweden
| | - Richard P. Taylor
- grid.170202.60000 0004 1936 8008Physics Department, 1371 University of Oregon, Eugene, OR 97403 USA ,grid.170202.60000 0004 1936 8008Materials Science Institute, 1252 University of Oregon, Eugene, OR 97403 USA ,grid.170202.60000 0004 1936 8008Phil and Penny Knight Campus for Accelerating Scientific Impact, 1505 University of Oregon, Franklin Blvd., Eugene, OR 97403 USA
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7
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Valderas-Gutiérrez J, Davtyan R, Sivakumar S, Anttu N, Li Y, Flatt P, Shin JY, Prinz CN, Höök F, Fioretos T, Magnusson MH, Linke H. Enhanced Optical Biosensing by Aerotaxy Ga(As)P Nanowire Platforms Suitable for Scalable Production. ACS APPLIED NANO MATERIALS 2022; 5:9063-9071. [PMID: 35909504 PMCID: PMC9315950 DOI: 10.1021/acsanm.2c01372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Sensitive detection of low-abundance biomolecules is central for diagnostic applications. Semiconductor nanowires can be designed to enhance the fluorescence signal from surface-bound molecules, prospectively improving the limit of optical detection. However, to achieve the desired control of physical dimensions and material properties, one currently uses relatively expensive substrates and slow epitaxy techniques. An alternative approach is aerotaxy, a high-throughput and substrate-free production technique for high-quality semiconductor nanowires. Here, we compare the optical sensing performance of custom-grown aerotaxy-produced Ga(As)P nanowires vertically aligned on a polymer substrate to GaP nanowires batch-produced by epitaxy on GaP substrates. We find that signal enhancement by individual aerotaxy nanowires is comparable to that from epitaxy nanowires and present evidence of single-molecule detection. Platforms based on both types of nanowires show substantially higher normalized-to-blank signal intensity than planar glass surfaces, with the epitaxy platforms performing somewhat better, owing to a higher density of nanowires. With further optimization, aerotaxy nanowires thus offer a pathway to scalable, low-cost production of highly sensitive nanowire-based platforms for optical biosensing applications.
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Affiliation(s)
- Julia Valderas-Gutiérrez
- NanoLund, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
- Division
of Solid State Physics, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
| | - Rubina Davtyan
- NanoLund, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
- Division
of Solid State Physics, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
| | - Sudhakar Sivakumar
- NanoLund, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
- Division
of Solid State Physics, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
| | - Nicklas Anttu
- Physics,
Faculty of Science and Engineering, Åbo
Akademi University, Henrikinkatu
2, FI-20500 Turku, Finland
| | - Yuyu Li
- AlignedBio
AB, Medicon Village,
Scheeletorget 1, SE-22363, Lund 22100, Sweden
| | - Patrick Flatt
- AlignedBio
AB, Medicon Village,
Scheeletorget 1, SE-22363, Lund 22100, Sweden
| | - Jae Yen Shin
- NanoLund, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
- Division
of Solid State Physics, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
| | - Christelle N. Prinz
- NanoLund, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
- Division
of Solid State Physics, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
| | - Fredrik Höök
- NanoLund, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
- Department
of Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden
| | - Thoas Fioretos
- Division
of Clinical Genetics, Lund University, SE-22185 Lund, Sweden
| | - Martin H. Magnusson
- NanoLund, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
- Division
of Solid State Physics, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
| | - Heiner Linke
- NanoLund, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
- Division
of Solid State Physics, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
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8
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McNaughton R, Huo Y, Li G, Ioschpe ADV, Yan L, Man HY, Zhang X. Regulatory Effects of Gradient Microtopographies on Synapse Formation and Neurite Growth in Hippocampal Neurons. JOURNAL OF MICROMECHANICS AND MICROENGINEERING : STRUCTURES, DEVICES, AND SYSTEMS 2022; 32:075005. [PMID: 35814808 PMCID: PMC9262107 DOI: 10.1088/1361-6439/ac73d7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Among approaches aiming toward functional nervous system restoration, those implementing microfabrication techniques allow the manufacture of platforms with distinct geometry where neurons can develop and be guided to form patterned connections in vitro. The interplay between neuronal development and the microenvironment, shaped by the physical limitations, remains largely unknown. Therefore, it is crucial to have an efficient way to quantify neuronal morphological changes induced by physical or contact guidance of the microenvironment. In this study, we first devise and assess a method to prepare anisotropic, gradient poly(dimethylsiloxane) micro-ridge/groove arrays featuring variable local pattern width. We then demonstrate the ability of this single substrate to simultaneously profile the morphologcial and synaptic connectivity changes of primary cultured hippocampal neurons reacting to variable physical conditons, throughout neurodevelopment, in vitro. The gradient microtopography enhanced adhesion within microgrooves, increasing soma density with decreasing pattern width. Decreasing pattern width also reduced dendritic arborization and increased preferential axon growth. Finally, decreasing pattern geometry inhibited presynaptic puncta architecture. Collectively, a method to examine structural development and connectivity in response to physical stimuli is established, and potentially provides insight into microfabricated geometries which promote neural regeneration and repair.
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Affiliation(s)
- Ryan McNaughton
- Department of Mechanical Engineering, Boston University, Boston, MA, USA
| | - Yuda Huo
- Department of Biology, Boston University, Boston, MA, USA
| | - Guicai Li
- Department of Mechanical Engineering, Boston University, Boston, MA, USA
| | | | - Lei Yan
- Department of Mechanical Engineering, Boston University, Boston, MA, USA
| | - Heng-Ye Man
- Department of Biology, Boston University, Boston, MA, USA
- Center for Systems Neuroscience, Boston University, Boston, MA, USA
| | - Xin Zhang
- Department of Mechanical Engineering, Boston University, Boston, MA, USA
- Photonics Center, Boston University, Boston, MA, USA
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9
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Moslehi S, Rowland C, Smith JH, Watterson WJ, Miller D, Niell CM, Alemán BJ, Perez MT, Taylor RP. Controlled assembly of retinal cells on fractal and Euclidean electrodes. PLoS One 2022; 17:e0265685. [PMID: 35385490 PMCID: PMC8985931 DOI: 10.1371/journal.pone.0265685] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 03/04/2022] [Indexed: 11/25/2022] Open
Abstract
Controlled assembly of retinal cells on artificial surfaces is important for fundamental cell research and medical applications. We investigate fractal electrodes with branches of vertically-aligned carbon nanotubes and silicon dioxide gaps between the branches that form repeating patterns spanning from micro- to milli-meters, along with single-scaled Euclidean electrodes. Fluorescence and electron microscopy show neurons adhere in large numbers to branches while glial cells cover the gaps. This ensures neurons will be close to the electrodes’ stimulating electric fields in applications. Furthermore, glia won’t hinder neuron-branch interactions but will be sufficiently close for neurons to benefit from the glia’s life-supporting functions. This cell ‘herding’ is adjusted using the fractal electrode’s dimension and number of repeating levels. We explain how this tuning facilitates substantial glial coverage in the gaps which fuels neural networks with small-world structural characteristics. The large branch-gap interface then allows these networks to connect to the neuron-rich branches.
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Affiliation(s)
- Saba Moslehi
- Physics Department, University of Oregon, Eugene, Oregon, United States of America
- Materials Science Institute, University of Oregon, Eugene, Oregon, United States of America
| | - Conor Rowland
- Physics Department, University of Oregon, Eugene, Oregon, United States of America
- Materials Science Institute, University of Oregon, Eugene, Oregon, United States of America
| | - Julian H. Smith
- Physics Department, University of Oregon, Eugene, Oregon, United States of America
- Materials Science Institute, University of Oregon, Eugene, Oregon, United States of America
| | - William J. Watterson
- Physics Department, University of Oregon, Eugene, Oregon, United States of America
- Materials Science Institute, University of Oregon, Eugene, Oregon, United States of America
| | - David Miller
- Physics Department, University of Oregon, Eugene, Oregon, United States of America
- Materials Science Institute, University of Oregon, Eugene, Oregon, United States of America
- Oregon Center for Optical, Molecular and Quantum Science, University of Oregon, Eugene, Oregon, United States of America
| | - Cristopher M. Niell
- Institute of Neuroscience, University of Oregon, Eugene, Oregon, United States of America
- Department of Biology, University of Oregon, Eugene, Oregon, United States of America
| | - Benjamín J. Alemán
- Physics Department, University of Oregon, Eugene, Oregon, United States of America
- Materials Science Institute, University of Oregon, Eugene, Oregon, United States of America
- Oregon Center for Optical, Molecular and Quantum Science, University of Oregon, Eugene, Oregon, United States of America
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, Oregon, United States of America
| | - Maria-Thereza Perez
- Division of Ophthalmology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
- NanoLund, Lund University, Lund, Sweden
- * E-mail: (RPT); (MTP)
| | - Richard P. Taylor
- Physics Department, University of Oregon, Eugene, Oregon, United States of America
- Materials Science Institute, University of Oregon, Eugene, Oregon, United States of America
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, Oregon, United States of America
- * E-mail: (RPT); (MTP)
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10
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Liu R, Lee J, Tchoe Y, Pre D, Bourhis AM, D'Antonio-Chronowska A, Robin G, Lee SH, Ro YG, Vatsyayan R, Tonsfeldt KJ, Hossain LA, Phipps ML, Yoo J, Nogan J, Martinez JS, Frazer KA, Bang AG, Dayeh SA. Ultra-Sharp Nanowire Arrays Natively Permeate, Record, and Stimulate Intracellular Activity in Neuronal and Cardiac Networks. ADVANCED FUNCTIONAL MATERIALS 2022; 32:2108378. [PMID: 35603230 PMCID: PMC9122115 DOI: 10.1002/adfm.202108378] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Indexed: 05/25/2023]
Abstract
We report innovative scalable, vertical, ultra-sharp nanowire arrays that are individually addressable to enable long-term, native recordings of intracellular potentials. Stable amplitudes of intracellular potentials from 3D tissue-like networks of neurons and cardiomyocytes are obtained. Individual electrical addressability is necessary for high-fidelity intracellular electrophysiological recordings. This study paves the way toward predictive, high-throughput, and low-cost electrophysiological drug screening platforms.
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Affiliation(s)
- Ren Liu
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Jihwan Lee
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Youngbin Tchoe
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Deborah Pre
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Andrew M Bourhis
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | | | - Gaelle Robin
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Sang Heon Lee
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Yun Goo Ro
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Ritwik Vatsyayan
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Karen J Tonsfeldt
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA; Center for Reproductive Science and Medicine, Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Lorraine A Hossain
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - M Lisa Phipps
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Jinkyoung Yoo
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - John Nogan
- Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, NM 87185, USA
| | - Jennifer S Martinez
- Center for Materials Interfaces in Research and Applications and Department of Applied Physics and Materials Science, Northern Arizona University, 624 S. Knoles Dr. Flagstaff, AZ 86011
| | - Kelly A Frazer
- Department of Pediatrics, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Anne G Bang
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Shadi A Dayeh
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
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11
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Harberts J, Bours K, Siegmund M, Hedrich C, Glatza M, Schöler HR, Haferkamp U, Pless O, Zierold R, Blick RH. Culturing human iPSC-derived neural progenitor cells on nanowire arrays: mapping the impact of nanowire length and array pitch on proliferation, viability, and membrane deformation. NANOSCALE 2021; 13:20052-20066. [PMID: 34842880 DOI: 10.1039/d1nr04352h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Nanowire arrays used as cell culture substrates build a potent tool for advanced biological applications such as cargo delivery and biosensing. The unique topography of nanowire arrays, however, renders them a challenging growth environment for cells and explains why only basic cell lines have been employed in existing studies. Here, we present the culturing of human induced pluripotent stem cell-derived neural progenitor cells on rectangularly arranged nanowire arrays: In detail, we mapped the impact on proliferation, viability, and topography-induced membrane deformation across a multitude of array pitches (1, 3, 5, 10 μm) and nanowire lengths (1.5, 3, 5 μm). Against the intuitive expectation, a reduced proliferation was found on the arrays with the smallest array pitch of 1 μm and long NWs. Typically, cells settle in a fakir-like state on such densely-spaced nanowires and thus experience no substantial stress caused by nanowires indenting the cell membrane. However, imaging of F-actin showed a distinct reorganization of the cytoskeleton along the nanowire tips in the case of small array pitches interfering with regular proliferation. For larger pitches, the cell numbers depend on the NW lengths but proliferation generally continued although heavy deformations of the cell membrane were observed caused by the encapsulation of the nanowires. Moreover, we noticed a strong interaction of the nanowires with the nucleus in terms of squeezing and indenting. Remarkably, the cell viability is maintained at about 85% despite the massive deformation of the cells. Considering the enormous potential of human induced stem cells to study neurodegenerative diseases and the high cellular viability combined with a strong interaction with nanowire arrays, we believe that our results pave the way to apply nanowire arrays to human stem cells for future applications in stem cell research and regenerative medicine.
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Affiliation(s)
- Jann Harberts
- Center for Hybrid Nanostructures (CHyN), Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
| | - Katja Bours
- Center for Hybrid Nanostructures (CHyN), Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
| | - Malte Siegmund
- Center for Hybrid Nanostructures (CHyN), Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
| | - Carina Hedrich
- Center for Hybrid Nanostructures (CHyN), Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
| | - Michael Glatza
- Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Röntgenstraße 20, 48149 Münster, Germany
| | - Hans R Schöler
- Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Röntgenstraße 20, 48149 Münster, Germany
| | - Undine Haferkamp
- Fraunhofer Institute for Translational Medicine and Pharmacology (ITMP), ScreeningPort, Schnackenburgallee 114, 22525 Hamburg, Germany
| | - Ole Pless
- Fraunhofer Institute for Translational Medicine and Pharmacology (ITMP), ScreeningPort, Schnackenburgallee 114, 22525 Hamburg, Germany
| | - Robert Zierold
- Center for Hybrid Nanostructures (CHyN), Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
| | - Robert H Blick
- Center for Hybrid Nanostructures (CHyN), Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
- Material Science and Engineering, College of Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
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12
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Li C, Ke C, Su Y, Wan C. Exercise Intervention Promotes the Growth of Synapses and Regulates Neuroplasticity in Rats With Ischemic Stroke Through Exosomes. Front Neurol 2021; 12:752595. [PMID: 34777222 PMCID: PMC8581302 DOI: 10.3389/fneur.2021.752595] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 09/27/2021] [Indexed: 12/17/2022] Open
Abstract
Background: Stroke is the leading cause of death and disability. Exercise produces neuroprotection by improving neuroplasticity. Exercise can induce exosome production. According to several studies, exosomes are involved in repairing brain function, but the relationship and mechanism of exercise, exosomes, and neuroprotection have not been elucidated. This study intends to explore the relationship and potential mechanism by observing the changes in the exosome level, infarct volume, neurological function and behavioral scores, synapses, and corticospinal tract (CST). Methods: Rats were randomly divided into four groups: a sham operation (SHAM) group, middle cerebral artery occlusion (MCAO) with sedentary intervention (SED-MCAO) group, MCAO with exercise intervention (EX-MCAO) group, and MCAO with exercise intervention and exosome injection (EX-MCAO-EXO) group. The exercise intervention was started 1 day after MCAO and lasted for 4 weeks. All rats were assessed using the modified neurological severity score (mNSS). The levels of exosomes in serum and brain, gait analysis, and magnetic resonance scan were performed 1 and 4 weeks after the intervention. After 4 weeks of intervention, the number of synapses, synaptophysin (Syn), and postsynaptic density protein 95(PSD-95) expression was detected. Results: After 4 weeks of intervention, (1) the EX-MCAO and EX-MCAO-EXO groups showed higher serum exosome (pEX−MCAO = 0.000, pEX−MCAO−EXO = 0.000) and brain exosome (pEX−MCAO = 0.001, pEX−MCAO−EXO = 0.000) levels than the SED-MCAO group, of which the EX-MCAO group had the highest serum exosome (p = 0.000) and the EX-MCAO-EXO group had the highest brain exosome (p = 0.03) levels. (2) The number of synapses in the EX-MCAO (p = 0.032) and EX-MCAO-EXO groups (p = 0.000) was significantly higher than that in the SED-MCAO group. The EX-MCAO-EXO group exhibited a greater number of synapses than the EX-MCAO (p = 0.000) group. (3) The synaptic plasticity-associated proteins were expressed significantly higher in the EX-MCAO (pSyn = 0.010, pPSD−95 = 0.044) and EX-MCAO-EXO (pSyn = 0.000, pPSD−95 = 0.000) groups than in the SED-MCAO group, and the EX-MCAO-EXO group (pSyn = 0.000, pPSD−95 = 0.046) had the highest expression. (4) Compared with the SED-MCAO group, the EX-MCAO group had significantly improved infarct volume ratio (p = 0.000), rFA value (p = 0.000), and rADC (p = 0.000). Compared with the EX-MCAO group, the EX-MCAO-EXO group had a significantly improved infarct volume ratio (p = 0.000), rFA value (p = 0.000), and rADC value (p = 0.001). (5) Compared with the SED-MCAO group, the EX-MCAO group (p = 0.001) and EX-MCAO-EXO group (p = 0.000) had significantly lower mNSS scores and improved gait. (6) The brain exosome levels were negatively correlated with the mNSS score, infarct volume ratio, and rADC value and positively correlated with the rFA value, Syn, and PSD-95 expression. The serum and brain exosome levels showed a positive correlation. Conclusions: Exercise intervention increases the serum exosome level in MCAO rats, which are recruited into the brain, leading to improved synaptic growth and CST integrity, a reduced infarct volume, and improved neurological function and gait.
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Affiliation(s)
- Chen Li
- Department of Physical Medicine and Rehabilitation, Tianjin Medical University General Hospital, Tianjin, China
| | - Changkai Ke
- Department of Physical Medicine and Rehabilitation, Tianjin Medical University General Hospital, Tianjin, China
| | - Yue Su
- Department of Physical Medicine and Rehabilitation, Tianjin Medical University General Hospital, Tianjin, China
| | - Chunxiao Wan
- Department of Physical Medicine and Rehabilitation, Tianjin Medical University General Hospital, Tianjin, China
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13
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Chiappini C, Chen Y, Aslanoglou S, Mariano A, Mollo V, Mu H, De Rosa E, He G, Tasciotti E, Xie X, Santoro F, Zhao W, Voelcker NH, Elnathan R. Tutorial: using nanoneedles for intracellular delivery. Nat Protoc 2021; 16:4539-4563. [PMID: 34426708 DOI: 10.1038/s41596-021-00600-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 06/30/2021] [Indexed: 02/08/2023]
Abstract
Intracellular delivery of advanced therapeutics, including biologicals and supramolecular agents, is complex because of the natural biological barriers that have evolved to protect the cell. Efficient delivery of therapeutic nucleic acids, proteins, peptides and nanoparticles is crucial for clinical adoption of emerging technologies that can benefit disease treatment through gene and cell therapy. Nanoneedles are arrays of vertical high-aspect-ratio nanostructures that can precisely manipulate complex processes at the cell interface, enabling effective intracellular delivery. This emerging technology has already enabled the development of efficient and non-destructive routes for direct access to intracellular environments and delivery of cell-impermeant payloads. However, successful implementation of this technology requires knowledge of several scientific fields, making it complex to access and adopt by researchers who are not directly involved in developing nanoneedle platforms. This presents an obstacle to the widespread adoption of nanoneedle technologies for drug delivery. This tutorial aims to equip researchers with the knowledge required to develop a nanoinjection workflow. It discusses the selection of nanoneedle devices, approaches for cargo loading and strategies for interfacing to biological systems and summarises an array of bioassays that can be used to evaluate the efficacy of intracellular delivery.
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Affiliation(s)
- Ciro Chiappini
- Centre for Craniofacial and Regenerative Biology, King's College London, London, UK.
- London Centre for Nanotechnology, King's College London, London, UK.
| | - Yaping Chen
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Clayton, Victoria, Australia
| | - Stella Aslanoglou
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Clayton, Victoria, Australia
- CSIRO Manufacturing, Clayton, Victoria, Australia
| | - Anna Mariano
- Center for Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, Naples, Italy
| | - Valentina Mollo
- Center for Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, Naples, Italy
| | - Huanwen Mu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore
| | - Enrica De Rosa
- Center for Musculoskeletal Regeneration, Orthopedics & Sports Medicine, Houston Methodist Research Institute, Houston, TX, USA
| | - Gen He
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou, China
| | - Ennio Tasciotti
- IRCCS San Raffaele Pisana Hospital, Rome, Italy
- San Raffaele University, Rome, Italy
- Sclavo Pharma, Siena, Italy
| | - Xi Xie
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou, China.
| | - Francesca Santoro
- Center for Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, Naples, Italy.
| | - Wenting Zhao
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore.
| | - Nicolas H Voelcker
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia.
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Clayton, Victoria, Australia.
- CSIRO Manufacturing, Clayton, Victoria, Australia.
- Department of Materials Science and Engineering, Monash University, Clayton, Victoria, Australia.
| | - Roey Elnathan
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia.
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Clayton, Victoria, Australia.
- Department of Materials Science and Engineering, Monash University, Clayton, Victoria, Australia.
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14
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Harberts J, Siegmund M, Schnelle M, Zhang T, Lei Y, Yu L, Zierold R, Blick RH. Robust neuronal differentiation of human iPSC-derived neural progenitor cells cultured on densely-spaced spiky silicon nanowire arrays. Sci Rep 2021; 11:18819. [PMID: 34552130 PMCID: PMC8458299 DOI: 10.1038/s41598-021-97820-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Accepted: 08/29/2021] [Indexed: 11/12/2022] Open
Abstract
Nanostructured cell culture substrates featuring nanowire (NW) arrays have been applied to a variety of basic cell lines and rodent neurons to investigate cellular behavior or to stimulate cell responses. However, patient-derived human neurons-a prerequisite for studying e.g. neurodegenerative diseases efficiently-are rarely employed due to sensitive cell culture protocols and usually long culturing periods. Here, we present human patient induced pluripotent stem cell-derived neurons cultured on densely-spaced spiky silicon NW arrays (600 NWs/ 100 µm[Formula: see text] with NW lengths of 1 µm) which show mature electrophysiological characteristics after only 20 days of culturing. Exemplary neuronal growth and network formation on the NW arrays are demonstrated using scanning electron microscopy and immunofluorescence microscopy. The cells and neurites rest in a fakir-like settling state on the NWs only in contact with the very NW tips shown by cross-sectional imaging of the cell/NW interface using focused ion beam milling and confocal laser scanning microscopy. Furthermore, the NW arrays promote the cell culture by slightly increasing the share of differentiated neurons determined by the quantification of immunofluorescence microscopy images. The electrophysiological functionality of the neurons is confirmed with patch-clamp recordings showing the excellent capability to fire action potentials. We believe that the short culturing time to obtain functional human neurons generated from patient-derived neural progenitor cells and the robustness of this differentiation protocol to produce these neurons on densely-spaced spiky nanowire arrays open up new pathways for stem cell characterization and neurodegenerative disease studies.
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Affiliation(s)
- Jann Harberts
- Center for Hybrid Nanostructures, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany.
| | - Malte Siegmund
- Center for Hybrid Nanostructures, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Matteo Schnelle
- Center for Hybrid Nanostructures, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Ting Zhang
- School of Electronics Science and Engineering, Nanjing University, Nanjing, 210093, China
| | - Yakui Lei
- School of Electronics Science and Engineering, Nanjing University, Nanjing, 210093, China
| | - Linwei Yu
- School of Electronics Science and Engineering, Nanjing University, Nanjing, 210093, China
| | - Robert Zierold
- Center for Hybrid Nanostructures, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany.
| | - Robert H Blick
- Center for Hybrid Nanostructures, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
- Material Science and Engineering, College of Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
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15
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Nano-Biomaterials for Retinal Regeneration. NANOMATERIALS 2021; 11:nano11081880. [PMID: 34443710 PMCID: PMC8399153 DOI: 10.3390/nano11081880] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/14/2021] [Accepted: 07/19/2021] [Indexed: 12/22/2022]
Abstract
Nanoscience and nanotechnology have revolutionized key areas of environmental sciences, including biological and physical sciences. Nanoscience is useful in interconnecting these sciences to find new hybrid avenues targeted at improving daily life. Pharmaceuticals, regenerative medicine, and stem cell research are among the prominent segments of biological sciences that will be improved by nanostructure innovations. The present review was written to present a comprehensive insight into various emerging nanomaterials, such as nanoparticles, nanowires, hybrid nanostructures, and nanoscaffolds, that have been useful in mice for ocular tissue engineering and regeneration. Furthermore, the current status, future perspectives, and challenges of nanotechnology in tracking cells or nanostructures in the eye and their use in modified regenerative ophthalmology mechanisms have also been proposed and discussed in detail. In the present review, various research findings on the use of nano-biomaterials in retinal regeneration and retinal remediation are presented, and these findings might be useful for future clinical applications.
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16
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Abstract
Bioelectronics explores the use of electronic devices for applications in signal transduction at their interfaces with biological systems. The miniaturization of the bioelectronic systems has enabled seamless integration at these interfaces and is providing new scientific and technological opportunities. In particular, nanowire-based devices can yield smaller sized and unique geometry detectors that are difficult to access with standard techniques, and thereby can provide advantages in sensitivity with reduced invasiveness. In this review, we focus on nanowire-enabled bioelectronics. First, we provide an overview of synthetic studies for designed growth of semiconductor nanowires of which structure and composition are controlled to enable key elements for bioelectronic devices. Second, we review nanowire field-effect transistor sensors for highly sensitive detection of biomolecules, their applications in diagnosis and drug discovery, and methods for sensitivity enhancement. We then turn to recent progress in nanowire-enabled studies of electrogenic cells, including cardiomyocytes and neurons. Representative advances in electrical recording using nanowire electronic devices for single cell measurements, cell network mapping, and three-dimensional recordings of synthetic and natural tissues, and in vivo brain mapping are highlighted. Finally, we overview the key challenges and opportunities of nanowires for fundamental research and translational applications.
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Affiliation(s)
- Anqi Zhang
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
| | - Jae-Hyun Lee
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
- Center for Nanomedicine, Institute for Basic Science (IBS), Advanced Science Institute, Yonsei University, Seoul, 03722, Korea
| | - Charles M Lieber
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA
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17
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Lu MH, Zhao XY, Xu DE, Chen JB, Ji WL, Huang ZP, Pan TT, Xue LL, Wang F, Li QF, Zhang Y, Wang TH, Yanagawa Y, Liu CF, Xu RX, Xia YY, Li S, Ma QH. Transplantation of GABAergic Interneuron Progenitor Attenuates Cognitive Deficits of Alzheimer's Disease Model Mice. J Alzheimers Dis 2021; 75:245-260. [PMID: 32280096 DOI: 10.3233/jad-200010] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Excitatory (E) and inhibitory (I) balance of neural network activity is essential for normal brain function and of particular importance to memory. Disturbance of E/I balance contributes to various neurological disorders. The appearance of neural hyperexcitability in Alzheimer's disease (AD) is even suggested as one of predictors of accelerated cognitive decline. In this study, we found that GAD67+, Parvalbumin+, Calretinin+, and Neuropeptide Y+ interneurons were progressively lost in the brain of APP/PS1 mice. Transplanted embryonic medial ganglionic eminence derived interneuron progenitors (IPs) survived, migrated, and differentiated into GABAergic interneuron subtypes successfully at 2 months after transplantation. Transplantation of IPs hippocampally rescued impaired synaptic plasticity and cognitive deficits of APP/PS1 transgenic mice, concomitant with a suppression of neural hyperexcitability, whereas transplantation of IPs failed to attenuate amyloid-β accumulation, neuroinflammation, and synaptic loss of APP/PS1 transgenic mice. These observations indicate that transplantation of IPs improves learning and memory of APP/PS1 transgenic mice via suppressing neural hyperexcitability. This study highlights a causal contribution of GABAergic dysfunction to AD pathogenesis and the potentiality of IP transplantation in AD therapy.
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Affiliation(s)
- Mei-Hong Lu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, Institute of Neuroscience, Soochow University, Suzhou, China.,Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Xiu-Yun Zhao
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, Institute of Neuroscience, Soochow University, Suzhou, China.,Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - De-En Xu
- Department of Neurology, the Second People's Hospital of Wuxi, Wuxi, Jiangsu Province, China
| | - Ji-Bo Chen
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, Institute of Neuroscience, Soochow University, Suzhou, China.,Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Wen-Li Ji
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, Institute of Neuroscience, Soochow University, Suzhou, China.,Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Ze-Ping Huang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, Institute of Neuroscience, Soochow University, Suzhou, China.,Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Ting-Ting Pan
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, Institute of Neuroscience, Soochow University, Suzhou, China.,Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Lu-Lu Xue
- Institute of Neuroscience, Kunming Medical University, Kunming, China
| | - Fen Wang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, Institute of Neuroscience, Soochow University, Suzhou, China.,Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Qi-Fa Li
- Department of Physiology, National-Local Joint Engineering Research Center for Drug-Research and Development (R & D) of Neurodegenerative Diseases, Liaoning Provincial Key Laboratory of Cerebral Diseases, Dalian Medical University, Dalian, Liaoning, China
| | - Yue Zhang
- Department of Physiology, National-Local Joint Engineering Research Center for Drug-Research and Development (R & D) of Neurodegenerative Diseases, Liaoning Provincial Key Laboratory of Cerebral Diseases, Dalian Medical University, Dalian, Liaoning, China
| | - Ting-Hua Wang
- Institute of Neuroscience, Kunming Medical University, Kunming, China
| | - Yuchio Yanagawa
- Department of Genetic and Behavioral Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Chun-Feng Liu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, Institute of Neuroscience, Soochow University, Suzhou, China.,Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Ru-Xiang Xu
- Department of Neurosurgery, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Yi-Yuan Xia
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, Institute of Neuroscience, Soochow University, Suzhou, China.,Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Shao Li
- Department of Physiology, National-Local Joint Engineering Research Center for Drug-Research and Development (R & D) of Neurodegenerative Diseases, Liaoning Provincial Key Laboratory of Cerebral Diseases, Dalian Medical University, Dalian, Liaoning, China
| | - Quan-Hong Ma
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, Institute of Neuroscience, Soochow University, Suzhou, China.,Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou, China
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18
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Seo J, Lanara C, Choi JY, Kim J, Cho H, Chang Y, Kang K, Stratakis E, Choi IS. Neuronal Migration on Silicon Microcone Arrays with Different Pitches. Adv Healthc Mater 2021; 10:e2000583. [PMID: 32815647 DOI: 10.1002/adhm.202000583] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 06/22/2020] [Indexed: 11/10/2022]
Abstract
Neuronal migration is a complicated but fundamental process for proper construction and functioning of neural circuits in the brain. Many in vivo studies have suggested the involvement of environmental physical features of a neuron in its migration, but little effort has been made for the in vitro demonstration of topography-driven neuronal migration. This work investigates migratory behaviors of primary hippocampal neurons on a silicon microcone (SiMC) array that presents 14 different pitch domains (pitch: 2.5-7.3 µm). Neuronal migration becomes the maximum at the pitch of around 3 µm, with an upper migration threshold of about 4 µm. Immunocytochemical studies indicate that the speed and direction of migration, as well as its probability of occurrence, are correlated with the morphology of the neuron, which is dictated by the pitch and shape of underlying SiMC structures. In addition to the effects on neuronal migration, the real-time imaging of migrating neurons on the topographical substrate reveals new in vitro modes of neuronal migration, which have not been observed on the conventional flat culture plate, but been suggested by in vivo studies.
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Affiliation(s)
- Jeongyeon Seo
- Center for Cell‐Encapsulation Research Department of Chemistry KAIST Daejeon 34141 Korea
| | - Christina Lanara
- Institute of Electronic Structure and Laser Foundation for Research and Technology Hellas (FORTH) Nikolaou Plastira 100 Heraklion Crete GR‐70013 Greece
| | - Ji Yu Choi
- Center for Cell‐Encapsulation Research Department of Chemistry KAIST Daejeon 34141 Korea
| | - Jungnam Kim
- Center for Cell‐Encapsulation Research Department of Chemistry KAIST Daejeon 34141 Korea
| | - Hyeoncheol Cho
- Center for Cell‐Encapsulation Research Department of Chemistry KAIST Daejeon 34141 Korea
| | - Young‐Tae Chang
- Department of Chemistry POSTECH Center for Self‐Assembly and Complexity Institute for Basic Science (IBS) Pohang 37673 Korea
| | - Kyungtae Kang
- Department of Applied Chemistry Kyung Hee University Yongin Gyeonggi 17104 Korea
| | - Emmanuel Stratakis
- Institute of Electronic Structure and Laser Foundation for Research and Technology Hellas (FORTH) Nikolaou Plastira 100 Heraklion Crete GR‐70013 Greece
| | - Insung S. Choi
- Center for Cell‐Encapsulation Research Department of Chemistry KAIST Daejeon 34141 Korea
- Department of Bio and Brain Engineering KAIST Daejeon 34141 Korea
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19
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Kharaghani D, Tajbakhsh Z, Duy Nam P, Soo Kim I. Application of Nanowires for Retinal Regeneration. Regen Med 2020. [DOI: 10.5772/intechopen.90149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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20
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Abend A, Steele C, Schmidt S, Frank R, Jahnke HG, Zink M. Proliferation and Cluster Analysis of Neurons and Glial Cell Organization on Nanocolumnar TiN Sub-Strates. Int J Mol Sci 2020; 21:E6249. [PMID: 32872379 PMCID: PMC7503702 DOI: 10.3390/ijms21176249] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/25/2020] [Accepted: 08/26/2020] [Indexed: 12/13/2022] Open
Abstract
Biomaterials employed for neural stimulation, as well as brain/machine interfaces, offer great perspectives to combat neurodegenerative diseases, while application of lab-on-a-chip devices such as multielectrode arrays is a promising alternative to assess neural function in vitro. For bioelectronic monitoring, nanostructured microelectrodes are required, which exhibit an increased surface area where the detection sensitivity is not reduced by the self-impedance of the electrode. In our study, we investigated the interaction of neurons (SH-SY5Y) and glial cells (U-87 MG) with nanocolumnar titanium nitride (TiN) electrode materials in comparison to TiN with larger surface grains, gold, and indium tin oxide (ITO) substrates. Glial cells showed an enhanced proliferation on TiN materials; however, these cells spread evenly distributed over all the substrate surfaces. By contrast, neurons proliferated fastest on nanocolumnar TiN and formed large cell agglomerations. We implemented a radial autocorrelation function of cellular positions combined with various clustering algorithms. These combined analyses allowed us to quantify the largest cluster on nanocolumnar TiN; however, on ITO and gold, neurons spread more homogeneously across the substrates. As SH-SY5Y cells tend to grow in clusters under physiologic conditions, our study proves nanocolumnar TiN as a potential bioactive material candidate for the application of microelectrodes in contact with neurons. To this end, the employed K-means clustering algorithm together with radial autocorrelation analysis is a valuable tool to quantify cell-surface interaction and cell organization to evaluate biomaterials' performance in vitro.
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Affiliation(s)
- Alice Abend
- Soft Matter Physics Division and Biotechnology & Biomedical Group, Peter-Debye-Institute for Soft Matter Physics, Leipzig University, Linnéstr. 5, 04103 Leipzig, Germany; (A.A.); (C.S.)
| | - Chelsie Steele
- Soft Matter Physics Division and Biotechnology & Biomedical Group, Peter-Debye-Institute for Soft Matter Physics, Leipzig University, Linnéstr. 5, 04103 Leipzig, Germany; (A.A.); (C.S.)
| | - Sabine Schmidt
- Centre for Biotechnology and Biomedicine, Molecular Biological-Biochemical Processing Technology, Leipzig University, Deutscher Platz 5, 04103 Leipzig, Germany; (S.S.); (R.F.)
| | - Ronny Frank
- Centre for Biotechnology and Biomedicine, Molecular Biological-Biochemical Processing Technology, Leipzig University, Deutscher Platz 5, 04103 Leipzig, Germany; (S.S.); (R.F.)
| | - Heinz-Georg Jahnke
- Centre for Biotechnology and Biomedicine, Molecular Biological-Biochemical Processing Technology, Leipzig University, Deutscher Platz 5, 04103 Leipzig, Germany; (S.S.); (R.F.)
| | - Mareike Zink
- Soft Matter Physics Division and Biotechnology & Biomedical Group, Peter-Debye-Institute for Soft Matter Physics, Leipzig University, Linnéstr. 5, 04103 Leipzig, Germany; (A.A.); (C.S.)
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21
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Olsson TB, Abariute L, Hrachowina L, Barrigón E, Volpati D, Limpert S, Otnes G, Borgström MT, Prinz CN. Photovoltaic nanowires affect human lung cell proliferation under illumination conditions. NANOSCALE 2020; 12:14237-14244. [PMID: 32608415 DOI: 10.1039/c9nr07678f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Using light to interact with cells is a promising way to steer cell behavior with minimal perturbation. Besides optogenetics, photovoltaic nanostructures such as nanowires can be used to interact with cells using light as a switch. Photovoltaic nanowires have, for instance, been used to stimulate neurons. However, the effects of the photovoltaic activity on cells are still poorly understood and characterized. Here, we investigate the effects of the photovoltaic activity of p-i-n nanowire arrays on A549 human lung adenocarcinoma cells. We have cultured A549 cells on top of vertical arrays of indium phosphide p-i-n nanowires (photovoltaic nanowires), with and without illumination to assess the effects of the nanowire photovoltaic activity on cells. We show that there is a higher proportion of dormant cells when the p-i-n nanowire arrays are illuminated. However, there is no difference in the proportion of dormant cells when the p-i-n nanowires are coated with oxide, which suggests that carrier injection in the cell medium (in this case, the release of electrons from the tip of the nanowires) is an important factor for modulating cell proliferation on photovoltaic nanowires. The results open up for interesting applications of photovoltaic nanowires in biomedicine, such as using them as a dormancy switch.
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Affiliation(s)
- Therese B Olsson
- Division of Solid State Physics and NanoLund, Lund University, 221 00 Lund, Sweden.
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22
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The Roles of an Aluminum Underlayer in the Biocompatibility and Mechanical Integrity of Vertically Aligned Carbon Nanotubes for Interfacing with Retinal Neurons. MICROMACHINES 2020; 11:mi11060546. [PMID: 32481670 PMCID: PMC7345717 DOI: 10.3390/mi11060546] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/22/2020] [Accepted: 05/26/2020] [Indexed: 02/06/2023]
Abstract
Retinal implant devices are becoming an increasingly realizable way to improve the vision of patients blinded by photoreceptor degeneration. As an electrode material that can improve restored visual acuity, carbon nanotubes (CNTs) excel due to their nanoscale topography, flexibility, surface chemistry, and double-layer capacitance. If vertically aligned carbon nanotubes (VACNTs) are biocompatible with retinal neurons and mechanically robust, they can further improve visual acuity-most notably in subretinal implants-because they can be patterned into high-aspect-ratio, micrometer-size electrodes. We investigated the role of an aluminum (Al) underlayer beneath an iron (Fe) catalyst layer used in the growth of VACNTs by chemical vapor deposition (CVD). In particular, we cultured dissociated retinal cells for three days in vitro (DIV) on unfunctionalized and oxygen plasma functionalized VACNTs grown from a Fe catalyst (Fe and Fe + Pl preparations, where Pl signifies the plasma functionalization) and an Fe catalyst with an Al underlayer (Al/Fe and Al/Fe + Pl preparations). The addition of the Al layer increased the mechanical integrity of the VACNT interface and enhanced retinal neurite outgrowth over the Fe preparation. Unexpectedly, the extent of neurite outgrowth was significantly greater in the Al/Fe than in the Al/Fe+Pl preparation, suggesting plasma functionalization can negatively impact biocompatibility for some VACNT preparations. Additionally, we show our VACNT growth process for the Al/Fe preparation can support neurite outgrowth for up to 7 DIV. By demonstrating the retinal neuron biocompatibility, mechanical integrity, and pattern control of our VACNTs, this work offers VACNT electrodes as a solution for improving the restored visual acuity provided by modern retinal implants.
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23
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Harberts J, Haferkamp U, Haugg S, Fendler C, Lam D, Zierold R, Pless O, Blick RH. Interfacing human induced pluripotent stem cell-derived neurons with designed nanowire arrays as a future platform for medical applications. Biomater Sci 2020; 8:2434-2446. [DOI: 10.1039/d0bm00182a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Nanostructured substrates such as nanowire arrays form a powerful tool for building next-generation medical devices.
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Affiliation(s)
- Jann Harberts
- Center for Hybrid Nanostructures
- Universität Hamburg
- 22761 Hamburg
- Germany
| | | | - Stefanie Haugg
- Center for Hybrid Nanostructures
- Universität Hamburg
- 22761 Hamburg
- Germany
| | - Cornelius Fendler
- Center for Hybrid Nanostructures
- Universität Hamburg
- 22761 Hamburg
- Germany
| | - Dennis Lam
- Fraunhofer IME ScreeningPort
- 22525 Hamburg
- Germany
| | - Robert Zierold
- Center for Hybrid Nanostructures
- Universität Hamburg
- 22761 Hamburg
- Germany
| | - Ole Pless
- Fraunhofer IME ScreeningPort
- 22525 Hamburg
- Germany
| | - Robert H. Blick
- Center for Hybrid Nanostructures
- Universität Hamburg
- 22761 Hamburg
- Germany
- Material Science and Engineering
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24
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Moxon SR, Corbett NJ, Fisher K, Potjewyd G, Domingos M, Hooper NM. Blended alginate/collagen hydrogels promote neurogenesis and neuronal maturation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109904. [PMID: 31499954 PMCID: PMC6873778 DOI: 10.1016/j.msec.2019.109904] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 05/23/2019] [Accepted: 06/17/2019] [Indexed: 12/30/2022]
Abstract
Brain extracellular matrix (ECM) is complex, heterogeneous and often poorly replicated in traditional 2D cell culture systems. The development of more physiologically relevant 3D cell models capable of emulating the native ECM is of paramount importance for the study of human induced pluripotent stem cell (iPSC)-derived neurons. Due to its structural similarity with hyaluronic acid, a primary component of brain ECM, alginate is a potential biomaterial for 3D cell culture systems. However, a lack of cell adhesion motifs within the chemical structure of alginate has limited its application in neural culture systems. This study presents a simple and accessible method of incorporating collagen fibrils into an alginate hydrogel by physical mixing and controlled gelation under physiological conditions and tests the hypothesis that such a substrate could influence the behaviour of human neurons in 3D culture. Regulation of the gelation process enabled the penetration of collagen fibrils throughout the hydrogel structure as demonstrated by transmission electron microscopy. Encapsulated human iPSC-derived neurons adhered to the blended hydrogel as evidenced by the increased expression of α1, α2 and β1 integrins. Furthermore, immunofluorescence microscopy revealed that encapsulated neurons formed complex neural networks and matured into branched neurons expressing synaptophysin, a key protein involved in neurotransmission, along the neurites. Mechanical tuning of the hydrogel stiffness by modulation of the alginate ionic crosslinker concentration also influenced neuron-specific gene expression. In conclusion, we have shown that by tuning the physicochemical properties of the alginate/collagen blend it is possible to create different ECM-like microenvironments where complex mechanisms underpinning the growth and development of human neurons can be simulated and systematically investigated. Alginate and collagen are blended to create a bespoke hydrogel that mimics aspects of brain ECM. Encapsulated human pluripotent stem cell derived neurons adhere to the hydrogel matrix and form 3D neural networks. Neuronal differentiation and maturation is promoted within the hydrogel matrix. Mechanical properties of the hydrogel can be easily tuned to optimise neurogenesis. The hydrogel presents a platform for studying neuronal function and dysfunction in health and disease.
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Affiliation(s)
- Samuel R Moxon
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, UK
| | - Nicola J Corbett
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, UK
| | - Kate Fisher
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, UK
| | - Geoffrey Potjewyd
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, UK; School of Mechanical, Aerospace and Civil Engineering, Faculty of Science and Engineering, The University of Manchester, Manchester M13 9PL, UK
| | - Marco Domingos
- School of Mechanical, Aerospace and Civil Engineering, Faculty of Science and Engineering, The University of Manchester, Manchester M13 9PL, UK
| | - Nigel M Hooper
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, UK.
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25
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Liliom H, Lajer P, Bérces Z, Csernyus B, Szabó Á, Pinke D, Lőw P, Fekete Z, Pongrácz A, Schlett K. Comparing the effects of uncoated nanostructured surfaces on primary neurons and astrocytes. J Biomed Mater Res A 2019; 107:2350-2359. [PMID: 31161618 DOI: 10.1002/jbm.a.36743] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 05/27/2019] [Accepted: 05/30/2019] [Indexed: 12/15/2022]
Abstract
The long-term application of central nervous system implants is currently limited by the negative response of the brain tissue, affecting both the performance of the device and the survival of nearby cells. Topographical modification of implant surfaces mimicking the structure and dimensions of the extracellular matrix may provide a solution to this negative tissue response and has been shown to affect the attachment and behavior of both neurons and astrocytes. In our study, commonly used neural implant materials, silicon, and platinum were tested with or without nanoscale surface modifications. No biological coatings were used in order to only examine the effect of the nanostructuring. We seeded primary mouse astrocytes and hippocampal neurons onto four different surfaces: flat polysilicon, nanostructured polysilicon, and platinum-coated versions of these surfaces. Fluorescent wide-field, confocal, and scanning electron microscopy were used to characterize the attachment, spreading and proliferation of these cell types. In case of astrocytes, we found that both cell number and average cell spreading was significantly larger on platinum, compared to silicon surfaces, while silicon surfaces impeded glial proliferation. Nanostructuring did not have a significant effect on either parameter in astrocytes but influenced the orientation of actin filaments and glial fibrillary acidic protein fibers. Neuronal soma attachment was impaired on metal surfaces while nanostructuring seemed to influence neuronal growth cone morphology, regardless of surface material. Taken together, the type of metals tested had a profound influence on cellular responses, which was only slightly modified by nanopatterning.
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Affiliation(s)
- Hanna Liliom
- Neuronal Cell Biology Research Group, Department of Physiology and Neurobiology, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
| | - Panna Lajer
- Neuronal Cell Biology Research Group, Department of Physiology and Neurobiology, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
| | - Zsófia Bérces
- Faculty of Information Technology & Bionics, Pázmány Péter Catholic University, Budapest, Hungary.,Institute of Technical Physics and Materials Science, Centre for Energy Research, Hungarian Academy of Sciences, Budapest, Hungary
| | - Bence Csernyus
- Faculty of Information Technology & Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - Ágnes Szabó
- Research Group for Implantable Microsystems, Faculty of Information Technology & Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - Domonkos Pinke
- Lab. of 3D Functional Network and Dendritic Imaging, Institute of Experimental Medicine, Hungarian Academy of Sciences, Budapest, Hungary
| | - Péter Lőw
- Department of Anatomy, Cell and Developmental Biology, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
| | - Zoltán Fekete
- Research Group for Implantable Microsystems, Faculty of Information Technology & Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - Anita Pongrácz
- Institute of Technical Physics and Materials Science, Centre for Energy Research, Hungarian Academy of Sciences, Budapest, Hungary.,Research Group for Implantable Microsystems, Faculty of Information Technology & Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - Katalin Schlett
- Neuronal Cell Biology Research Group, Department of Physiology and Neurobiology, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
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26
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Lard M, Linke H, Prinz CN. Biosensing using arrays of vertical semiconductor nanowires: mechanosensing and biomarker detection. NANOTECHNOLOGY 2019; 30:214003. [PMID: 30699399 DOI: 10.1088/1361-6528/ab0326] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Due to their high aspect ratio and increased surface-to-foot-print area, arrays of vertical semiconductor nanowires are used in numerous biological applications, such as cell transfection and biosensing. Here we focus on two specific valuable biosensing approaches that, so far, have received relatively limited attention in terms of their potential capabilities: cellular mechanosensing and lightguiding-induced enhanced fluorescence detection. Although proposed a decade ago, these two applications for using vertical nanowire arrays have only very recently achieved significant breakthroughs, both in terms of understanding their fundamental phenomena, and in the ease of their implementation. We review the status of the field in these areas and describe significant findings and potential future directions.
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Affiliation(s)
- Mercy Lard
- Division of Solid State Physics and NanoLund, Lund University, Box 118, SE-221 00 Lund Sweden
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27
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Harberts J, Zierold R, Fendler C, Koitmäe A, Bayat P, Fernandez-Cuesta I, Loers G, Diercks BP, Fliegert R, Guse AH, Ronning C, Otnes G, Borgström M, Blick RH. Culturing and patch clamping of Jurkat T cells and neurons on Al 2O 3 coated nanowire arrays of altered morphology. RSC Adv 2019; 9:11194-11201. [PMID: 35520244 PMCID: PMC9063011 DOI: 10.1039/c8ra05320k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 05/02/2019] [Accepted: 03/30/2019] [Indexed: 01/19/2023] Open
Abstract
Nanowire substrates play an increasingly important role for cell cultures as an approach for hybrid bio-semiconductor junctions. We investigate Jurkat T cells and neurons from mice cultured on Al2O3 coated ordered and randomly distributed nanowires. Cell viability was examined by life/membrane staining reporting comparable viability on planar and nanowire substrates. Imaging the hybrid interface reveals a wrapping of the cell membrane around the very nanowire tip. Patch clamp recordings show similar electrophysiological responses on each type of nanowires compared to planar control substrates. We demonstrate that the morphological characteristic of the nanowire substrate plays a subordinate role which opens up the arena for a large range of nanowire substrates in a functionalized application such as stimulation or sensing.
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Affiliation(s)
- Jann Harberts
- Center for Hybrid Nanostructures, Universität Hamburg Luruper Chaussee 149 22761 Hamburg Germany +49 40 42838 1975
| | - Robert Zierold
- Center for Hybrid Nanostructures, Universität Hamburg Luruper Chaussee 149 22761 Hamburg Germany +49 40 42838 1975
| | - Cornelius Fendler
- Center for Hybrid Nanostructures, Universität Hamburg Luruper Chaussee 149 22761 Hamburg Germany +49 40 42838 1975
| | - Aune Koitmäe
- Center for Hybrid Nanostructures, Universität Hamburg Luruper Chaussee 149 22761 Hamburg Germany +49 40 42838 1975
| | - Parisa Bayat
- Center for Hybrid Nanostructures, Universität Hamburg Luruper Chaussee 149 22761 Hamburg Germany +49 40 42838 1975
| | - Irene Fernandez-Cuesta
- Center for Hybrid Nanostructures, Universität Hamburg Luruper Chaussee 149 22761 Hamburg Germany +49 40 42838 1975
| | - Gabriele Loers
- Center for Molecular Neurobiology Hamburg, University Medical Center Hamburg-Eppendorf Falkenried 94 20251 Hamburg Germany
| | - Björn-Philipp Diercks
- Department of Biochemistry and Molecular Cell Biology, The Calcium Signaling Group, University Medical Center Hamburg-Eppendorf Martinistraße 52 20251 Hamburg Germany
| | - Ralf Fliegert
- Department of Biochemistry and Molecular Cell Biology, The Calcium Signaling Group, University Medical Center Hamburg-Eppendorf Martinistraße 52 20251 Hamburg Germany
| | - Andreas H Guse
- Department of Biochemistry and Molecular Cell Biology, The Calcium Signaling Group, University Medical Center Hamburg-Eppendorf Martinistraße 52 20251 Hamburg Germany
| | - Carsten Ronning
- Institute for Solid State Physics, Friedrich-Schiller-University Jena Helmholtzweg 3-5 07743 Jena Germany
| | - Gaute Otnes
- NanoLund, Lund University Box 118 22100 Lund Sweden
- Solid State Physics, Lund University Box 118 22100 Lund Sweden
| | - Magnus Borgström
- NanoLund, Lund University Box 118 22100 Lund Sweden
- Solid State Physics, Lund University Box 118 22100 Lund Sweden
| | - Robert H Blick
- Center for Hybrid Nanostructures, Universität Hamburg Luruper Chaussee 149 22761 Hamburg Germany +49 40 42838 1975
- Material Science and Engineering, College of Engineering, University of Wisconsin-Madison Madison Wisconsin 53706 USA
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28
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Abstract
Biological systems respond to and communicate through biophysical cues, such as electrical, thermal, mechanical and topographical signals. However, precise tools for introducing localized physical stimuli and/or for sensing biological responses to biophysical signals with high spatiotemporal resolution are limited. Inorganic semiconductors display many relevant electrical and optical properties, and they can be fabricated into a broad spectrum of electronic and photonic devices. Inorganic semiconductor devices enable the formation of functional interfaces with biological material, ranging from proteins to whole organs. In this Review, we discuss fundamental semiconductor physics and operation principles, with a focus on their behaviour in physiological conditions, and highlight the advantages of inorganic semiconductors for the establishment of biointerfaces. We examine semiconductor device design and synthesis and discuss typical signal transduction mechanisms at bioelectronic and biophotonic interfaces for electronic and optoelectronic sensing, optoelectronic and photothermal stimulation and photoluminescent in vivo imaging of cells and tissues. Finally, we evaluate cytotoxicity and highlight possible new material components and biological targets of inorganic semiconductor devices.
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29
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Li Z, Kamlund S, Ryser T, Lard M, Oredsson S, Prinz CN. Single cell analysis of proliferation and movement of cancer and normal-like cells on nanowire array substrates. J Mater Chem B 2018; 6:7042-7049. [PMID: 32254587 DOI: 10.1039/c8tb02049c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nanowires are presently investigated in the context of various biological and medical applications. In general, these studies are population-based, which results in sub-populations being overlooked. Here, we present a single cell analysis of cell cycle and cell movement parameters of cells seeded on nanowires using digital holographic microscopy for time-lapse imaging. MCF10A normal-like human breast epithelial cells and JIMT-1 breast cancer cells were seeded on glass, flat gallium phosphide (GaP), and on vertical GaP nanowire arrays. The cells were monitored individually using digital holographic microscopy for 48 h. The data show that cell division is affected in cells seeded on flat GaP and nanowires compared to glass, with much fewer cells dividing on the former two substrates compared to the latter. However, MCF10 cells that are dividing on glass and flat GaP substrates have similar cell cycle time, suggesting that distinct cell subpopulations are affected differently by the substrates. Altogether, the data highlight the importance of performing single cell analysis to increase our understanding of the versatility of cell behavior on different substrates, which is relevant in the design of nanowire applications.
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Affiliation(s)
- Zhen Li
- Division of Solid State Physics, Lund University, 221 00 Lund, Sweden.
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30
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Lu MH, Ji WL, Xu DE, Yao PP, Zhao XY, Wang ZT, Fang LP, Huang R, Lan LJ, Chen JB, Wang TH, Cheng LH, Xu RX, Liu CF, Puglielli L, Ma QH. Inhibition of sphingomyelin synthase 1 ameliorates alzheimer-like pathology in APP/PS1 transgenic mice through promoting lysosomal degradation of BACE1. Exp Neurol 2018; 311:67-79. [PMID: 30243987 DOI: 10.1016/j.expneurol.2018.09.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 08/12/2018] [Accepted: 09/17/2018] [Indexed: 12/11/2022]
Abstract
Sphingolipids emerge as essential modulators in the etiology of Alzheimer's disease (AD) with unclear mechanisms. Elevated levels of SM synthase 1 (SMS1), which catalyzes the synthesis of SM from ceramide and phosphatidylcholine, have been observed in the brains of Alzheimer's disease (AD), where expression of β-site APP cleaving enzyme 1 (BACE1), a rate limiting enzyme in amyloid-β (Aβ) generation, are upregulated. In the present study, we show knockdown of SMS1 via andeno associated virus (serotype 8, AAV8) in the hippocampus of APP/PS1 transgenic mice, attenuates the densities of Aβ plaques, neuroinflammation, synaptic loss and thus rescuing cognitive deficits of these transgenic mice. We further describe that knockdown or inhibition of SMS1 decreases BACE1 stability, which is accompanied with decreased BACE1 levels in the Golgi, whereas enhanced BACE1 levels in the early endosomes and the lysosomes. The reduction of BACE1 levels induced by knockdown or inhibition of SMS1 is prevented by inhibition of lysosomes. Therefore, knockdown or inhibition of SMS1 promotes lysosomal degradation of BACE1 via modulating the intracellular trafficking of BACE1. Knockdown of SMS1 attenuates AD-like pathology through promoting lysosomal degradation of BACE1.
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Affiliation(s)
- Mei-Hong Lu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho- Diseases, Institute of Neuroscience, Soochow University, Suzhou 215004, China; Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Wen-Li Ji
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho- Diseases, Institute of Neuroscience, Soochow University, Suzhou 215004, China; Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - De-En Xu
- Department of Neurology, The Second People's Hospital of Wuxi, Wuxi 214002, China
| | - Pei-Pei Yao
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho- Diseases, Institute of Neuroscience, Soochow University, Suzhou 215004, China; Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Xiu-Yun Zhao
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho- Diseases, Institute of Neuroscience, Soochow University, Suzhou 215004, China; Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Zhao-Tao Wang
- Affiliated Bayi Brain Hospital, Military General Hospital of Beijing PLA, Southern Medical University, Beijing 100700, China
| | - Li-Pao Fang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho- Diseases, Institute of Neuroscience, Soochow University, Suzhou 215004, China; Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Rui Huang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho- Diseases, Institute of Neuroscience, Soochow University, Suzhou 215004, China; Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Li-Jun Lan
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho- Diseases, Institute of Neuroscience, Soochow University, Suzhou 215004, China; Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Ji-Bo Chen
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho- Diseases, Institute of Neuroscience, Soochow University, Suzhou 215004, China; Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Ting-Hua Wang
- Institute of Neuroscience, Kunming Medical University, Kunming 650500, China
| | - Li-Hua Cheng
- Affiliated Bayi Brain Hospital, Military General Hospital of Beijing PLA, Southern Medical University, Beijing 100700, China
| | - Ru-Xiang Xu
- Affiliated Bayi Brain Hospital, Military General Hospital of Beijing PLA, Southern Medical University, Beijing 100700, China
| | - Chun-Feng Liu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho- Diseases, Institute of Neuroscience, Soochow University, Suzhou 215004, China; Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Luigi Puglielli
- Department of Medicine and Wisconsin Alzheimer's Disease Research Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Quan-Hong Ma
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho- Diseases, Institute of Neuroscience, Soochow University, Suzhou 215004, China; Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China; Affiliated Bayi Brain Hospital, Military General Hospital of Beijing PLA, Southern Medical University, Beijing 100700, China.
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Kim BJ, Park M, Park JH, Joo S, Kim MH, Kang K, Choi IS. Pioneering Effects and Enhanced Neurite Complexity of Primary Hippocampal Neurons on Hierarchical Neurotemplated Scaffolds. Adv Healthc Mater 2018; 7:e1800289. [PMID: 30088694 DOI: 10.1002/adhm.201800289] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 05/27/2018] [Indexed: 12/14/2022]
Abstract
In this work, the use of scaffolds is reported, templated from live neurons as an advanced culture platform for primary neurons. Hippocampal neurons cultured on neurotemplated scaffolds exhibit an affinity for templated somas, revealing a preference for micrometric structures amidst nanotopographical features. It is also reported, for the first time, that neurite complexity can be topographically controlled by increasing the density of nanometric features on neurotemplated scaffolds. Neurotemplated scaffolds are versatile, hierarchical topographies that feature biologically relevant structures, in both form and scale, and capture the true complexity of an in vivo environment. The introduction and implementation of neurotemplated scaffolds is sure to advance research in the fields of neurodevelopment, network development, and neuroregeneration.
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Affiliation(s)
- Beom Jin Kim
- Center for Cell-Encapsulation Research; Department of Chemistry; KAIST; Daejeon 34141 Republic of Korea
| | - Matthew Park
- Center for Cell-Encapsulation Research; Department of Chemistry; KAIST; Daejeon 34141 Republic of Korea
| | - Ji Hun Park
- Department of Science Education; Ewha Womans University; Seoul 03760 Republic of Korea
| | - Sunghoon Joo
- Center for Cell-Encapsulation Research; Department of Chemistry; KAIST; Daejeon 34141 Republic of Korea
| | - Mi-Hee Kim
- Center for Cell-Encapsulation Research; Department of Chemistry; KAIST; Daejeon 34141 Republic of Korea
| | - Kyungtae Kang
- Department of Applied Chemistry; Kyung Hee University; Yongin Gyeonggi 17104 Republic of Korea
| | - Insung S. Choi
- Center for Cell-Encapsulation Research; Department of Chemistry; KAIST; Daejeon 34141 Republic of Korea
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Seo J, Kim J, Joo S, Choi JY, Kang K, Cho WK, Choi IS. Nanotopography-Promoted Formation of Axon Collateral Branches of Hippocampal Neurons. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1801763. [PMID: 30028572 DOI: 10.1002/smll.201801763] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 06/23/2018] [Indexed: 06/08/2023]
Abstract
Axon collateral branches, as a key structural motif of neurons, allow neurons to integrate information from highly interconnected, divergent networks by establishing terminal boutons. Although physical cues are generally known to have a comprehensive range of effects on neuronal development, their involvement in axonal branching remains elusive. Herein, it is demonstrated that the nanopillar arrays significantly increase the number of axon collateral branches and also promote their growth. Immunostaining and biochemical analyses indicate that the physical interactions between the nanopillars and the neurons give rise to lateral filopodia at the axon shaft via cytoskeletal changes, leading to the formation of axonal branches. This report, demonstrates that nanotopography regulates axonal branching, and provides a guideline for the design of sophisticated neuron-based devices and scaffolds for neuro-engineering.
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Affiliation(s)
- Jeongyeon Seo
- Department of Chemistry, Center for Cell-Encapsulation Research, KAIST, Daejeon, 34141, South Korea
| | - Juan Kim
- Department of Chemistry, Center for Cell-Encapsulation Research, KAIST, Daejeon, 34141, South Korea
| | - Sunghoon Joo
- Department of Chemistry, Center for Cell-Encapsulation Research, KAIST, Daejeon, 34141, South Korea
| | - Ji Yu Choi
- Department of Chemistry, Center for Cell-Encapsulation Research, KAIST, Daejeon, 34141, South Korea
| | - Kyungtae Kang
- Department of Applied Chemistry, Kyung Hee University, Yongin, Gyeonggi, 17104, South Korea
| | - Woo Kyung Cho
- Department of Chemistry, Chungnam National University, Daejeon, 34134, South Korea
| | - Insung S Choi
- Department of Chemistry, Center for Cell-Encapsulation Research, KAIST, Daejeon, 34141, South Korea
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Morphology of living cells cultured on nanowire arrays with varying nanowire densities and diameters. SCIENCE CHINA-LIFE SCIENCES 2018; 61:427-435. [PMID: 29656338 DOI: 10.1007/s11427-017-9264-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 12/25/2017] [Indexed: 10/17/2022]
Abstract
Vertical nanowire arrays are increasingly investigated for their applications in steering cell behavior. The geometry of the array is an important parameter, which influences the morphology and adhesion of cells. Here, we investigate the effects of array geometry on the morphology of MCF7 cancer cells and MCF10A normal-like epithelial cells. Different gallium phosphide nanowire array-geometries were produced by varying the nanowire density and diameter. Our results show that the cell size is smaller on nanowires compared to flat gallium phosphide. The cell area decreases with increasing the nanowire density on the substrate. We observed an effect of the nanowire diameter on MCF10A cells, with a decreased cell area on 40 nm diameter nanowires, compared to 60 and 80 nm diameter nanowires in high-density arrays. The focal adhesion morphology depends on the extent to which cells are contacting the substrate. For low nanowire densities and diameters, cells are lying on the substrate and we observed large focal adhesions at the cell edges. In contrast, for high nanowire densities and diameters, cells are lying on top of the nanowires and we observed point-like focal adhesions distributed over the whole cell. Our results constitute a step towards the ability to fine-tune cell behavior on nanowire arrays.
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Bencsik A, Lestaevel P, Guseva Canu I. Nano- and neurotoxicology: An emerging discipline. Prog Neurobiol 2018; 160:45-63. [DOI: 10.1016/j.pneurobio.2017.10.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 09/10/2017] [Accepted: 10/20/2017] [Indexed: 12/12/2022]
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35
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Kim E, Kim JY, Choi H. An SU-8-based microprobe with a nanostructured surface enhances neuronal cell attachment and growth. MICRO AND NANO SYSTEMS LETTERS 2017. [DOI: 10.1186/s40486-017-0062-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Wu L, Zhang Z, Gao H, Li Y, Hou L, Yao H, Wu S, Liu J, Wang L, Zhai Y, Ou H, Lin M, Wu X, Liu J, Lang G, Xin Q, Wu G, Luo L, Liu P, Shentu J, Wu N, Sheng J, Qiu Y, Chen W, Li L. Open-label phase I clinical trial of Ad5-EBOV in Africans in China. Hum Vaccin Immunother 2017; 13. [PMID: 28708962 DOI: 10.1002/smll.201701815] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/31/2017] [Indexed: 04/16/2023] Open
Abstract
BACKGROUND To determine the safety and immunogenicity of a novel recombinant adenovirus type 5 vector based Ebola virus disease vaccine (Ad5-EBOV) in Africans in China. METHODS A phase 1, dose-escalation, open-label trial was conducted. 61 healthy Africans were sequentially enrolled, with 31 participants receiving one shot intramuscular injection and 30 participants receiving a double-shot regimen. Primary and secondary end points related to safety and immunogenicity were assessed within 28 d after vaccination. This study was registered with ClinicalTrials.gov (NCT02401373). RESULTS Ad5-EBOV is well tolerated and no adverse reaction of grade 3 or above was observed. 53 (86.89%) participants reported at least one adverse reaction within 28 d of vaccination. The most common reaction was fever and the mild pain at injection site, and there were no significant difference between these 2 groups. Ebola glycoprotein-specific antibodies appeared in all 61 participants and antibodies titers peaked after 28 d of vaccination. The geometric mean titres (GMTs) were similar between these 2 groups (1919.01 vs 1684.70 P = 0.5562). The glycoprotein-specific T-cell responses rapidly peaked after 14 d of vaccination and then decreased, however, the percentage of subjects with responses were much higher in the high-dose group (60.00% vs 9.68%, P = 0.0014). Pre-existing Ad5 neutralizing antibodies could significantly dampen the specific humoral immune response and cellular response to the vaccine. CONCLUSION The application of Ad5-EBOV demonstrated safe in Africans in China and a specific GP antibody and T-cell response could occur 14 d after the first immunization. This acceptable safety profile provides a reliable basis to proceed with trials in Africa.
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MESH Headings
- Adult
- Africa/epidemiology
- Antibodies, Neutralizing/blood
- Antibodies, Viral/blood
- China
- Ebola Vaccines/administration & dosage
- Ebola Vaccines/adverse effects
- Ebola Vaccines/immunology
- Ebolavirus/immunology
- Female
- Fever/ethnology
- Healthy Volunteers
- Hemorrhagic Fever, Ebola/epidemiology
- Hemorrhagic Fever, Ebola/ethnology
- Hemorrhagic Fever, Ebola/immunology
- Hemorrhagic Fever, Ebola/prevention & control
- Humans
- Immunity, Cellular
- Immunity, Humoral
- Immunogenicity, Vaccine
- Injections, Intramuscular
- Male
- Membrane Glycoproteins/immunology
- Middle Aged
- T-Lymphocytes/immunology
- Vaccination
- Young Adult
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Affiliation(s)
- Lihua Wu
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Zhe Zhang
- c Beijing Institute of Biotechnology , Haidian District, Beijing , China
| | - Hainv Gao
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
- d Zhejiang University International Hospital , Xiacheng District, Hangzhou , Zhejiang , China
| | - Yuhua Li
- e National Institutes for Food and Drug Control , Chongwen District, Beijing , China
| | - Lihua Hou
- c Beijing Institute of Biotechnology , Haidian District, Beijing , China
| | - Hangping Yao
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Shipo Wu
- c Beijing Institute of Biotechnology , Haidian District, Beijing , China
| | - Jian Liu
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Ling Wang
- e National Institutes for Food and Drug Control , Chongwen District, Beijing , China
| | - You Zhai
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Huilin Ou
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Meihua Lin
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Xiaoxin Wu
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
- d Zhejiang University International Hospital , Xiacheng District, Hangzhou , Zhejiang , China
| | - Jingjing Liu
- e National Institutes for Food and Drug Control , Chongwen District, Beijing , China
| | - Guanjing Lang
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Qian Xin
- f The General Hospital of People's Liberation Army , Beijing , China
| | - Guolan Wu
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Li Luo
- g Department of Epidemiology and Biostatistics , School of Public Health, Southeast University , Nanjing , Jiangsu , China
| | - Pei Liu
- g Department of Epidemiology and Biostatistics , School of Public Health, Southeast University , Nanjing , Jiangsu , China
| | - Jianzhong Shentu
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Nanping Wu
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Jifang Sheng
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Yunqing Qiu
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
| | - Wei Chen
- c Beijing Institute of Biotechnology , Haidian District, Beijing , China
| | - Lanjuan Li
- a The First Affiliated Hospital, College of Medicine, Zhejiang University , Xiacheng District, Hangzhou , Zhejiang , China
- b The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , Xiacheng District, Hangzhou , Zhejiang , China
- d Zhejiang University International Hospital , Xiacheng District, Hangzhou , Zhejiang , China
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Gautam V, Naureen S, Shahid N, Gao Q, Wang Y, Nisbet D, Jagadish C, Daria VR. Engineering Highly Interconnected Neuronal Networks on Nanowire Scaffolds. NANO LETTERS 2017; 17:3369-3375. [PMID: 28437614 DOI: 10.1021/acs.nanolett.6b05288] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Identifying the specific role of physical guidance cues in the growth of neurons is crucial for understanding the fundamental biology of brain development and for designing scaffolds for tissue engineering. Here, we investigate the structural significance of nanoscale topographies as physical cues for neurite outgrowth and circuit formation by growing neurons on semiconductor nanowires. We monitored neurite growth using optical and scanning electron microscopy and evaluated the spontaneous neuronal network activity using functional calcium imaging. We show, for the first time, that an isotropic arrangement of indium phosphide (InP) nanowires can serve as physical cues for guiding neurite growth and aid in forming a network with neighboring neurons. Most importantly, we confirm that multiple neurons, with neurites guided by the topography of the InP nanowire scaffolds, exhibit synchronized calcium activity, implying intercellular communications via synaptic connections. Our study imparts new fundamental insights on the role of nanotopographical cues in the formation of functional neuronal circuits in the brain and will therefore advance the development of neuroprosthetic scaffolds.
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Affiliation(s)
- Vini Gautam
- Eccles Institute of Neuroscience, John Curtin School of Medical Research, ‡Department of Electronic Materials Engineering, Research School of Physics and Engineering, §Laboratory of Advanced Biomaterials, Research School of Engineering, ∥Australian National Fabrication Facility, Research School of Physics and Engineering, Australian National University , Canberra, ACT 2601, Australia
| | - Shagufta Naureen
- Eccles Institute of Neuroscience, John Curtin School of Medical Research, ‡Department of Electronic Materials Engineering, Research School of Physics and Engineering, §Laboratory of Advanced Biomaterials, Research School of Engineering, ∥Australian National Fabrication Facility, Research School of Physics and Engineering, Australian National University , Canberra, ACT 2601, Australia
| | - Naeem Shahid
- Eccles Institute of Neuroscience, John Curtin School of Medical Research, ‡Department of Electronic Materials Engineering, Research School of Physics and Engineering, §Laboratory of Advanced Biomaterials, Research School of Engineering, ∥Australian National Fabrication Facility, Research School of Physics and Engineering, Australian National University , Canberra, ACT 2601, Australia
| | - Qian Gao
- Eccles Institute of Neuroscience, John Curtin School of Medical Research, ‡Department of Electronic Materials Engineering, Research School of Physics and Engineering, §Laboratory of Advanced Biomaterials, Research School of Engineering, ∥Australian National Fabrication Facility, Research School of Physics and Engineering, Australian National University , Canberra, ACT 2601, Australia
| | - Yi Wang
- Eccles Institute of Neuroscience, John Curtin School of Medical Research, ‡Department of Electronic Materials Engineering, Research School of Physics and Engineering, §Laboratory of Advanced Biomaterials, Research School of Engineering, ∥Australian National Fabrication Facility, Research School of Physics and Engineering, Australian National University , Canberra, ACT 2601, Australia
| | - David Nisbet
- Eccles Institute of Neuroscience, John Curtin School of Medical Research, ‡Department of Electronic Materials Engineering, Research School of Physics and Engineering, §Laboratory of Advanced Biomaterials, Research School of Engineering, ∥Australian National Fabrication Facility, Research School of Physics and Engineering, Australian National University , Canberra, ACT 2601, Australia
| | - Chennupati Jagadish
- Eccles Institute of Neuroscience, John Curtin School of Medical Research, ‡Department of Electronic Materials Engineering, Research School of Physics and Engineering, §Laboratory of Advanced Biomaterials, Research School of Engineering, ∥Australian National Fabrication Facility, Research School of Physics and Engineering, Australian National University , Canberra, ACT 2601, Australia
| | - Vincent R Daria
- Eccles Institute of Neuroscience, John Curtin School of Medical Research, ‡Department of Electronic Materials Engineering, Research School of Physics and Engineering, §Laboratory of Advanced Biomaterials, Research School of Engineering, ∥Australian National Fabrication Facility, Research School of Physics and Engineering, Australian National University , Canberra, ACT 2601, Australia
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Liu R, Chen R, Elthakeb AT, Lee SH, Hinckley S, Khraiche ML, Scott J, Pre D, Hwang Y, Tanaka A, Ro YG, Matsushita AK, Dai X, Soci C, Biesmans S, James A, Nogan J, Jungjohann KL, Pete DV, Webb DB, Zou Y, Bang AG, Dayeh SA. High Density Individually Addressable Nanowire Arrays Record Intracellular Activity from Primary Rodent and Human Stem Cell Derived Neurons. NANO LETTERS 2017; 17:2757-2764. [PMID: 28384403 PMCID: PMC6045931 DOI: 10.1021/acs.nanolett.6b04752] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
We report a new hybrid integration scheme that offers for the first time a nanowire-on-lead approach, which enables independent electrical addressability, is scalable, and has superior spatial resolution in vertical nanowire arrays. The fabrication of these nanowire arrays is demonstrated to be scalable down to submicrometer site-to-site spacing and can be combined with standard integrated circuit fabrication technologies. We utilize these arrays to perform electrophysiological recordings from mouse and rat primary neurons and human induced pluripotent stem cell (hiPSC)-derived neurons, which revealed high signal-to-noise ratios and sensitivity to subthreshold postsynaptic potentials (PSPs). We measured electrical activity from rodent neurons from 8 days in vitro (DIV) to 14 DIV and from hiPSC-derived neurons at 6 weeks in vitro post culture with signal amplitudes up to 99 mV. Overall, our platform paves the way for longitudinal electrophysiological experiments on synaptic activity in human iPSC based disease models of neuronal networks, critical for understanding the mechanisms of neurological diseases and for developing drugs to treat them.
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Affiliation(s)
- Ren Liu
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Renjie Chen
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Ahmed T. Elthakeb
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Sang Heon Lee
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Sandy Hinckley
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Massoud L. Khraiche
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - John Scott
- Neurobiology Section, Biological Sciences Division, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Deborah Pre
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Yoontae Hwang
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Atsunori Tanaka
- Graduate Program of Materials Science and Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Yun Goo Ro
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Albert K. Matsushita
- Graduate Program of Materials Science and Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Xing Dai
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
- Division of Physics and Applied Physics, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Cesare Soci
- Division of Physics and Applied Physics, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Steven Biesmans
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Anthony James
- Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
| | - John Nogan
- Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
| | - Katherine L. Jungjohann
- Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
| | - Douglas V. Pete
- Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
| | - Denise B. Webb
- Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
| | - Yimin Zou
- Neurobiology Section, Biological Sciences Division, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Anne G. Bang
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Shadi A. Dayeh
- Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
- Graduate Program of Materials Science and Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
- Department of NanoEngineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
- Corresponding Author:
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Andolfi L, Murello A, Cassese D, Ban J, Dal Zilio S, Lazzarino M. High aspect ratio silicon nanowires control fibroblast adhesion and cytoskeleton organization. NANOTECHNOLOGY 2017; 28:155102. [PMID: 28177298 DOI: 10.1088/1361-6528/aa5f3a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Cell-cell and cell-matrix interactions are essential to the survival and proliferation of most cells, and are responsible for triggering a wide range of biochemical pathways. More recently, the biomechanical role of those interactions was highlighted, showing, for instance, that adhesion forces are essential for cytoskeleton organization. Silicon nanowires (Si NWs) with their small size, high aspect ratio and anisotropic mechanical response represent a useful model to investigate the forces involved in the adhesion processes and their role in cellular development. In this work we explored and quantified, by single cell force spectroscopy (SCFS), the interaction of mouse embryonic fibroblasts with a flexible forest of Si NWs. We observed that the cell adhesion forces are comparable to those found on collagen and bare glass coverslip, analogously the membrane tether extraction forces are similar to that on collagen but stronger than that on bare flat glass. Cell survival did not depend significantly on the substrate, although a reduced proliferation after 36 h was observed. On the contrary both cell morphology and cytoskeleton organization revealed striking differences. The cell morphology on Si-NW was characterized by a large number of filopodia and a significant decrease of the cell mobility. The cytoskeleton organization was characterized by the absence of actin fibers, which were instead dominant on collagen and flat glass support. Such findings suggest that the mechanical properties of disordered Si NWs, and in particular their strong asymmetry, play a major role in the adhesion, morphology and cytoskeleton organization processes. Indeed, while adhesion measurements by SCFS provide out-of-plane forces values consistent with those measured on conventional substrates, weaker in-plane forces hinder proper cytoskeleton organization and migration processes.
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Affiliation(s)
- Laura Andolfi
- Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche (IOM-CNR) Basovizza, Area Science Park, I-34149 Trieste, Italy
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Mahapatra C, Singh RK, Lee JH, Jung J, Hyun JK, Kim HW. Nano-shape varied cerium oxide nanomaterials rescue human dental stem cells from oxidative insult through intracellular or extracellular actions. Acta Biomater 2017; 50:142-153. [PMID: 27940193 DOI: 10.1016/j.actbio.2016.12.014] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 11/23/2016] [Accepted: 12/02/2016] [Indexed: 01/09/2023]
Abstract
Cerium oxide nanomaterials (CeNMs), due to their excellent scavenging properties of reactive oxygen species (ROS), have gained great promise for therapeutic applications. A high level of ROS often degrades the potential of stem cells in terms of survivability, maintenance and lineage differentiation. Here we hypothesize the CeNMs may play an important role in protecting the capacity of stem cells against the oxidative insult, and the suppression mechanism of ROS level may depend on the internalization of CeNMs. We synthesized CeNMs with different directional shapes (aspect ratios) by a pH-controlled hydrothermal method, and treated them to stem cells derived from human dental pulp at various doses. The short CeNMs (nanoparticles and nanorods) were internalized rapidly to cells whereas long CeNMs (nanowires) were slowly internalized, which led to different distributions of CeNMs and suppressed the ROS levels either intracellularly or extracellularly under the H2O2-exposed conditions. Resultantly, the stem cells, when dosed with the CeNMs, were rescued to have excellent cell survivability; the damages in intracellular components including DNA fragmentation, lipid rupture and protein degradation were significantly alleviated. The findings imply that the ROS-scavenging events of CeNMs need special consideration of aspect ratio-dependent cellular internalization, and also suggest the promising use of CeNMs to protect stem cells from the ROS-insult environments, which can ultimately improve the stem cell potential for tissue engineering and regenerative medicine uses. STATEMENT OF SIGNIFICANCE Oxidative stress governs many stem cell functions like self-renewal and lineage differentiation, and the biological conditions involving tissue repair and disease cure where stem cell therapy is often needed. Here we demonstrate the unique role of cerium oxide nanomaterials (CeNMs) in rescuing stem cell survivability, migration ability, and intracellular components from oxidative stress. In particular, we deliver a novel finding that nano-morphologically varied CeNMs show different mechanisms in their scavenging reactive oxygen species either intracellularly or extracellularly, and this is related with their different cellular internalizations. We used human dental pulp stem cells for the model study and proved the CeNMs were effective in controlling ROS level by means of scavenging intracellularly or extracellularly, which ultimately led to improving the intact therapeutic potential of stem cells. This work touches an important biological issue of nanomaterial interactions with stem cells under the conditions related with oxidative stress and the resultant damage. The correlation of shape factor in therapeutic nanomaterials with stem cell interaction and the oxidative stress-related functions will provide informative ideas in the design of CeNMs for cellular therapy.
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Kavaldzhiev M, Perez JE, Ivanov Y, Bertoncini A, Liberale C, Kosel J. Biocompatible 3D printed magnetic micro needles. Biomed Phys Eng Express 2017. [DOI: 10.1088/2057-1976/aa5ccb] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Zalis MC, Johansson S, Englund-Johansson U. Immunocytochemical Profiling of Cultured Mouse Primary Retinal Cells. J Histochem Cytochem 2017; 65:223-239. [PMID: 28151698 PMCID: PMC5407564 DOI: 10.1369/0022155416689675] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Primary retinal cell cultures and immunocytochemistry are important experimental platforms in ophthalmic research. Translation of retinal cells from their native environment to the in vitro milieu leads to cellular stress, jeopardizing their in vivo phenotype features. Moreover, the specificity and stability of many retinal immunochemical markers are poorly evaluated in retinal cell cultures. Hence, we here evaluated the expression profile of 17 retinal markers, that is, recoverin, rhodopsin, arrestin, Chx10, PKC, DCX, CRALBP, GS, vimentin, TPRV4, RBPMS, Brn3a, β-tubulin III, NeuN, MAP2, GFAP, and synaptophysin. At 7 and 18 days of culture, the marker expression profiles of mouse postnatal retinal cells were compared with their age-matched in vivo retinas. We demonstrate stable in vitro expression of all markers, except for arrestin and CRALBP. Differences in cellular expression and location of some markers were observed, both over time in culture and compared with the age-matched retina. We hypothesize that these differences are likely culture condition dependent. Taken together, we suggest a thorough evaluation of the antibodies in specific culture settings, before extrapolating the in vitro results to an in vivo setting. Moreover, the identification of specific cell types may require a combination of different genes expressed or markers with structural information.
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Affiliation(s)
- Marina C Zalis
- Division of Ophthalmology, Department of Clinical Sciences in Lund, Lund University, Lund, Sweden (MCZ, SJ, UEJ)
| | - Sebastian Johansson
- Division of Ophthalmology, Department of Clinical Sciences in Lund, Lund University, Lund, Sweden (MCZ, SJ, UEJ)
| | - Ulrica Englund-Johansson
- Division of Ophthalmology, Department of Clinical Sciences in Lund, Lund University, Lund, Sweden (MCZ, SJ, UEJ)
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Seyock S, Maybeck V, Scorsone E, Rousseau L, Hébert C, Lissorgues G, Bergonzo P, Offenhäusser A. Interfacing neurons on carbon nanotubes covered with diamond. RSC Adv 2017. [DOI: 10.1039/c6ra20207a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Investigation of the interface and needed adhesion surface for neuronal cells on carbon nanotubes covered with diamond.
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Affiliation(s)
- Silke Seyock
- Institute of Complex Systems (ICS-8/PGI-8)
- Forschungszentrum Jülich
- 52428 Jülich
- Germany
| | - Vanessa Maybeck
- Institute of Complex Systems (ICS-8/PGI-8)
- Forschungszentrum Jülich
- 52428 Jülich
- Germany
| | | | | | | | | | | | - Andreas Offenhäusser
- Institute of Complex Systems (ICS-8/PGI-8)
- Forschungszentrum Jülich
- 52428 Jülich
- Germany
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Neurobiochemical changes in the vicinity of a nanostructured neural implant. Sci Rep 2016; 6:35944. [PMID: 27775024 PMCID: PMC5075914 DOI: 10.1038/srep35944] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 10/07/2016] [Indexed: 01/22/2023] Open
Abstract
Neural interface technologies including recording and stimulation electrodes are currently in the early phase of clinical trials aiming to help patients with spinal cord injuries, degenerative disorders, strokes interrupting descending motor pathways, or limb amputations. Their lifetime is of key importance; however, it is limited by the foreign body response of the tissue causing the loss of neurons and a reactive astrogliosis around the implant surface. Improving the biocompatibility of implant surfaces, especially promoting neuronal attachment and regeneration is therefore essential. In our work, bioactive properties of implanted black polySi nanostructured surfaces (520–800 nm long nanopillars with a diameter of 150–200 nm) were investigated and compared to microstructured Si surfaces in eight-week-long in vivo experiments. Glial encapsulation and local neuronal cell loss were characterised using GFAP and NeuN immunostaining respectively, followed by systematic image analysis. Regarding the severity of gliosis, no significant difference was observed in the vicinity of the different implant surfaces, however, the number of surviving neurons close to the nanostructured surface was higher than that of the microstructured ones. Our results imply that the functionality of implanted microelectrodes covered by Si nanopillars may lead to improved long-term recordings.
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Nguyen DHK, Pham VTH, Al Kobaisi M, Bhadra C, Orlowska A, Ghanaati S, Manzi BM, Baulin VA, Joudkazis S, Kingshott P, Crawford RJ, Ivanova EP. Adsorption of Human Plasma Albumin and Fibronectin onto Nanostructured Black Silicon Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:10744-10751. [PMID: 27718587 DOI: 10.1021/acs.langmuir.6b02601] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The protein adsorption of two human plasma proteins-albumin (Alb) and fibronectin (Fn)-onto synthetic nanostructured bactericidal material-black silicon (bSi) surfaces (that contain an array of nanopillars) and silicon wafer (nonstructured) surfaces-was investigated. The adsorption behavior of Alb and Fn onto two types of substrata was studied using a combination of complementary analytical techniques. A two-step Alb adsorption mechanism onto the bSi surface has been proposed. At low bulk concentrations (below 40 μg/mL), the Alb preferentially adsorbed at the base of the nanopillars. At higher bulk concentrations, the Alb adsorbed on the top of the nanopillars. In the case of Fn, the protein preferentially adsorbed on the top of the nanopillars, irrespective of its bulk concentration.
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Affiliation(s)
- Duy H K Nguyen
- Department of Chemistry and Biotechnology, Faculty of Science, Engineering and Technology, Swinburne University of Technology , Hawthorn VIC 3122, Australia
| | - Vy T H Pham
- Department of Chemistry and Biotechnology, Faculty of Science, Engineering and Technology, Swinburne University of Technology , Hawthorn VIC 3122, Australia
| | - Mohammad Al Kobaisi
- Department of Chemistry and Biotechnology, Faculty of Science, Engineering and Technology, Swinburne University of Technology , Hawthorn VIC 3122, Australia
| | - Chris Bhadra
- Department of Chemistry and Biotechnology, Faculty of Science, Engineering and Technology, Swinburne University of Technology , Hawthorn VIC 3122, Australia
| | - Anna Orlowska
- Frankfurt Orofacial Regenerative Medicine, University Hospital Frankfurt , Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany
| | - Shahram Ghanaati
- Frankfurt Orofacial Regenerative Medicine, University Hospital Frankfurt , Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany
| | - Berardo Mario Manzi
- Department d'Enginyeria Quimica, Universitat Rovira i Virgili , 26 Av. dels Paisos Catalans, 43007 Tarragona, Spain
| | - Vladimir A Baulin
- Department d'Enginyeria Quimica, Universitat Rovira i Virgili , 26 Av. dels Paisos Catalans, 43007 Tarragona, Spain
| | - Saulius Joudkazis
- Department of Chemistry and Biotechnology, Faculty of Science, Engineering and Technology, Swinburne University of Technology , Hawthorn VIC 3122, Australia
| | - Peter Kingshott
- Department of Chemistry and Biotechnology, Faculty of Science, Engineering and Technology, Swinburne University of Technology , Hawthorn VIC 3122, Australia
| | - Russell J Crawford
- School of Science, College of Science, Engineering and Health, RMIT University , Melbourne VIC 3001, Australia
| | - Elena P Ivanova
- Department of Chemistry and Biotechnology, Faculty of Science, Engineering and Technology, Swinburne University of Technology , Hawthorn VIC 3122, Australia
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Zalis MC, Johansson S, Johansson F, Johansson UE. Exploration of physical and chemical cues on retinal cell fate. Mol Cell Neurosci 2016; 75:122-32. [DOI: 10.1016/j.mcn.2016.07.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 06/29/2016] [Accepted: 07/25/2016] [Indexed: 12/28/2022] Open
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Gällentoft L, Pettersson LME, Danielsen N, Schouenborg J, Prinz CN, Linsmeier CE. Impact of degradable nanowires on long-term brain tissue responses. J Nanobiotechnology 2016; 14:64. [PMID: 27507159 PMCID: PMC4979107 DOI: 10.1186/s12951-016-0216-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Accepted: 08/03/2016] [Indexed: 01/12/2023] Open
Abstract
Background A promising approach to improve the performance of neural implants consists of adding nanomaterials, such as nanowires, to the surface of the implant. Nanostructured interfaces could improve the integration and communication stability, partly through the reduction of the cell-to-electrode distance. However, the safety issues of implanted nanowires in the brain need to be evaluated and understood before nanowires can be used on the surface of implants for long periods of time. To this end we here investigate whether implanted degradable nanowires offer any advantage over non-degradable nanowires in a long-term in vivo study (1 year) with respect to brain tissue responses. Results The tissue response after injection of degradable silicon oxide (SiOx)-coated gallium phosphide nanowires and biostable hafnium oxide-coated GaP nanowires into the rat striatum was compared. One year after nanowire injection, no significant difference in microglial or astrocytic response, as measured by staining for ED1 and glial fibrillary acidic protein, respectively, or in neuronal density, as measured by staining for NeuN, was found between degradable and biostable nanowires. Of the cells investigated, only microglia cells had engulfed the nanowires. The SiOx-coated nanowire residues were primarily seen in aggregated hypertrophic ED1-positive cells, possibly microglial cells that have fused to create multinucleated giant cells. Occasionally, degradable nanowires with an apparently intact shape were found inside single, small ED1-positive cells. The biostable nanowires were found intact in microglia cells of both phenotypes described. Conclusion The present study shows that the degradable nanowires remain at least partly in the brain over long time periods, i.e. 1 year; however, no obvious bio-safety issues for this degradable nanomaterial could be detected. Electronic supplementary material The online version of this article (doi:10.1186/s12951-016-0216-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Lina Gällentoft
- Department of Experimental Medical Science, Medical Faculty, Neuronano Research Center (NRC), Lund University, Scheelevägen 2, 223 81, Lund, Sweden.
| | - Lina M E Pettersson
- Department of Experimental Medical Science, Medical Faculty, Neuronano Research Center (NRC), Lund University, Scheelevägen 2, 223 81, Lund, Sweden
| | - Nils Danielsen
- Department of Experimental Medical Science, Medical Faculty, Neuronano Research Center (NRC), Lund University, Scheelevägen 2, 223 81, Lund, Sweden
| | - Jens Schouenborg
- Department of Experimental Medical Science, Medical Faculty, Neuronano Research Center (NRC), Lund University, Scheelevägen 2, 223 81, Lund, Sweden
| | - Christelle N Prinz
- Department of Experimental Medical Science, Medical Faculty, Neuronano Research Center (NRC), Lund University, Scheelevägen 2, 223 81, Lund, Sweden. .,Division of Solid State Physics/NanoLund, Lund University, P.O. Box 118, 221 00, Lund, Sweden.
| | - Cecilia Eriksson Linsmeier
- Department of Experimental Medical Science, Medical Faculty, Neuronano Research Center (NRC), Lund University, Scheelevägen 2, 223 81, Lund, Sweden.
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Zhang Y, Qiu B, Wang J, Yao Y, Wang C, Liu J. RETRACTED ARTICLE: Effects of BDNF-Transfected BMSCs on Neural Functional Recovery and Synaptophysin Expression in Rats with Cerebral Infarction. Mol Neurobiol 2016; 54:3813-3824. [DOI: 10.1007/s12035-016-9946-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 05/26/2016] [Indexed: 01/18/2023]
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Piret G, Prinz CN. Could the use of nanowire structures overcome some of the current limitations of brain electrode implants? Nanomedicine (Lond) 2016; 11:745-7. [DOI: 10.2217/nnm.16.23] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Affiliation(s)
- Gaëlle Piret
- Clinatec laboratory, Biomedical Research Center Edmond J. Safra, INSERM/CEA-léti/UJF/CHU, 38054 Grenoble Cedex 09, France
| | - Christelle N Prinz
- Division of Solid State Physics and NanoLund, Lund University, 221 00 Lund, Sweden
- Neuronano Research Center, Lund University, 223 81 Lund, Sweden
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Hjort M, Bauer M, Gunnarsson S, Mårsell E, Zakharov AA, Karlsson G, Sanfins E, Prinz CN, Wallenberg R, Cedervall T, Mikkelsen A. Electron microscopy imaging of proteins on gallium phosphide semiconductor nanowires. NANOSCALE 2016; 8:3936-43. [PMID: 26838122 DOI: 10.1039/c5nr08888g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
We have imaged GaP nanowires (NWs) incubated with human laminin, serum albumin (HSA), and blood plasma using both cryo-transmission electron microscopy and synchrotron based X-ray photoemission electron microscopy. This extensive imaging methodology simultaneously reveals structural, chemical and morphological details of individual nanowires and the adsorbed proteins. We found that the proteins bind to NWs, forming coronas with thicknesses close to the proteins' hydrodynamic diameters. We could directly image how laminin is extending from the NWs, maximizing the number of proteins bound to the NWs. NWs incubated with both laminin and HSA show protein coronas with a similar appearance to NWs incubated with laminin alone, indicating that the presence of HSA does not affect the laminin conformation on the NWs. In blood plasma, an intermediate sized corona around the NWs indicates a corona with a mixture of plasma proteins. The ability to directly visualize proteins on nanostructures in situ holds great promise for assessing the conformation and thickness of the protein corona, which is key to understanding and predicting the properties of engineered nanomaterials in a biological environment.
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Affiliation(s)
- Martin Hjort
- Division of Synchrotron Radiation Research, Department of Physics, Lund University, P.O. Box 118, 221 00 Lund, Sweden.
| | - Mikael Bauer
- Center for Molecular Protein Science, Department of Biochemistry and Structural Biology, Lund University, P.O. Box 118, 221 00 Lund, Sweden
| | - Stefan Gunnarsson
- Center for Molecular Protein Science, Department of Biochemistry and Structural Biology, Lund University, P.O. Box 118, 221 00 Lund, Sweden
| | - Erik Mårsell
- Division of Synchrotron Radiation Research, Department of Physics, Lund University, P.O. Box 118, 221 00 Lund, Sweden.
| | - Alexei A Zakharov
- The MAX-IV Laboratory, Lund University, P.O. Box 118, 221 00 Lund, Sweden
| | - Gunnel Karlsson
- nCHREM/Centre for Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, 221 00 Lund, Sweden
| | - Elodie Sanfins
- Center for Molecular Protein Science, Department of Biochemistry and Structural Biology, Lund University, P.O. Box 118, 221 00 Lund, Sweden
| | - Christelle N Prinz
- Division of Solid State Physics, Department of Physics, Lund University, P.O. Box 118, 221 00 Lund, Sweden
| | - Reine Wallenberg
- nCHREM/Centre for Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, 221 00 Lund, Sweden
| | - Tommy Cedervall
- Center for Molecular Protein Science, Department of Biochemistry and Structural Biology, Lund University, P.O. Box 118, 221 00 Lund, Sweden
| | - Anders Mikkelsen
- Division of Synchrotron Radiation Research, Department of Physics, Lund University, P.O. Box 118, 221 00 Lund, Sweden.
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