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Mezzasalma SA, Grassi L, Grassi M. Physical and chemical properties of carbon nanotubes in view of mechanistic neuroscience investigations. Some outlook from condensed matter, materials science and physical chemistry. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 131:112480. [PMID: 34857266 DOI: 10.1016/j.msec.2021.112480] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 09/08/2021] [Accepted: 10/07/2021] [Indexed: 01/17/2023]
Abstract
The open border between non-living and living matter, suggested by increasingly emerging fields of nanoscience interfaced to biological systems, requires a detailed knowledge of nanomaterials properties. An account of the wide spectrum of phenomena, belonging to physical chemistry of interfaces, materials science, solid state physics at the nanoscale and bioelectrochemistry, thus is acquainted for a comprehensive application of carbon nanotubes interphased with neuron cells. This review points out a number of conceptual tools to further address the ongoing advances in coupling neuronal networks with (carbon) nanotube meshworks, and to deepen the basic issues that govern a biological cell or tissue interacting with a nanomaterial. Emphasis is given here to the properties and roles of carbon nanotube systems at relevant spatiotemporal scales of individual molecules, junctions and molecular layers, as well as to the point of view of a condensed matter or materials scientist. Carbon nanotube interactions with blood-brain barrier, drug delivery, biocompatibility and functionalization issues are also regarded.
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Affiliation(s)
- Stefano A Mezzasalma
- Ruder Bošković Institute, Materials Physics Division, Bijeniška cesta 54, 10000 Zagreb, Croatia; Lund Institute for advanced Neutron and X-ray Science (LINXS), Lund University, IDEON Building, Delta 5, Scheelevägen 19, 223 70 Lund, Sweden.
| | - Lucia Grassi
- Department of Engineering and Architecture, Trieste University, via Valerio 6, I-34127 Trieste, Italy
| | - Mario Grassi
- Department of Engineering and Architecture, Trieste University, via Valerio 6, I-34127 Trieste, Italy.
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2
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Montana V, Flint D, Waagepetersen HS, Schousboe A, Parpura V. Two Metabolic Fuels, Glucose and Lactate, Differentially Modulate Exocytotic Glutamate Release from Cultured Astrocytes. Neurochem Res 2021; 46:2551-2579. [PMID: 34057673 PMCID: PMC9015689 DOI: 10.1007/s11064-021-03340-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/06/2021] [Accepted: 05/10/2021] [Indexed: 12/26/2022]
Abstract
Astrocytes have a prominent role in metabolic homeostasis of the brain and can signal to adjacent neurons by releasing glutamate via a process of regulated exocytosis. Astrocytes synthesize glutamate de novo owing to the pyruvate entry to the citric/tricarboxylic acid cycle via pyruvate carboxylase, an astrocyte specific enzyme. Pyruvate can be sourced from two metabolic fuels, glucose and lactate. Thus, we investigated the role of these energy/carbon sources in exocytotic glutamate release from astrocytes. Purified astrocyte cultures were acutely incubated (1 h) in glucose and/or lactate-containing media. Astrocytes were mechanically stimulated, a procedure known to increase intracellular Ca2+ levels and cause exocytotic glutamate release, the dynamics of which were monitored using single cell fluorescence microscopy. Our data indicate that glucose, either taken-up from the extracellular space or mobilized from the intracellular glycogen storage, sustained glutamate release, while the availability of lactate significantly reduced the release of glutamate from astrocytes. Based on further pharmacological manipulation during imaging along with tandem mass spectrometry (proteomics) analysis, lactate alone, but not in the hybrid fuel, caused metabolic changes consistent with an increased synthesis of fatty acids. Proteomics analysis further unveiled complex changes in protein profiles, which were condition-dependent and generally included changes in levels of cytoskeletal proteins, proteins of secretory organelle/vesicle traffic and recycling at the plasma membrane in aglycemic, lactate or hybrid-fueled astrocytes. These findings support the notion that the availability of energy sources and metabolic milieu play a significant role in gliotransmission.
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Affiliation(s)
- Vedrana Montana
- Department of Neurobiology, The University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
| | - Daniel Flint
- Luxumbra Strategic Research, LLC, Arlington, VA, USA
| | - Helle S Waagepetersen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Arne Schousboe
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Vladimir Parpura
- Department of Neurobiology, The University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
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Murugesan R, Raman S. Recent trends in carbon nanotubes based prostate cancer therapy: A biomedical hybrid for diagnosis and treatment. Curr Drug Deliv 2021; 19:229-237. [PMID: 33655834 DOI: 10.2174/1567201818666210224101456] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/08/2021] [Accepted: 01/27/2021] [Indexed: 12/31/2022]
Abstract
At present treatment methods for cancer are limited, partially due to the solubility, poor cellular distribution of drug molecules and, the incapability of drugs to annoy the cellular barriers. Carbon nanotubes (CNTs) generally have excellent physio-chemical properties, which include high-level penetration into the cell membrane, high surface area and high capacity of drug loading by in circulating modification with bio-molecules, project them as an appropriate candidate to diagnose and deliver drugs to prostate cancer (PCa). Additionally, the chemically modified CNTs which have excellent 'Biosensing' properties therefore makes it easy for detecting PCa without fluorescent agent and thus targets the particular site of PCa and also, Drug delivery can accomplish a high efficacy, enhanced permeability with less toxic effects. While CNTs have been mainly engaged in cancer treatment, a few studies are focussed on the diagnosis and treatment of PCa. Here, we detailly reviewed the current progress of the CNTs based diagnosis and targeted drug delivery system for managing and curing PCa.
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Affiliation(s)
- Raja Murugesan
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty. India
| | - Sureshkumar Raman
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty. India
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Chemically Functionalized Water-Soluble Single-Walled Carbon Nanotubes Obstruct Vesicular/Plasmalemmal Recycling in Astrocytes Down-Stream of Calcium Ions. Cells 2020; 9:cells9071597. [PMID: 32630262 PMCID: PMC7408470 DOI: 10.3390/cells9071597] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 06/24/2020] [Accepted: 06/27/2020] [Indexed: 01/24/2023] Open
Abstract
We used single-walled carbon nanotubes chemically functionalized with polyethylene glycol (SWCNT-PEG) to assess the effects of this nanomaterial on astrocytic endocytosis and exocytosis. We observed that the SWCNT-PEG do not affect the adenosine triphosphate (ATP)-evoked Ca2+ elevations in astrocytes but significantly reduce the Ca2+-dependent glutamate release. There was a significant decrease in the endocytic load of the recycling dye during constitutive and ATP-evoked recycling. Furthermore, SWCNT-PEG hampered ATP-evoked exocytotic release of the loaded recycling dye. Thus, by functionally obstructing evoked vesicular recycling, SWCNT-PEG reduced glutamate release from astrocytes via regulated exocytosis. These effects implicate SWCNT-PEG as a modulator of Ca2+-dependent exocytosis in astrocytes downstream of Ca2+, likely at the level of vesicle fusion with/pinching off the plasma membrane.
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Xiang C, Zhang Y, Guo W, Liang XJ. Biomimetic carbon nanotubes for neurological disease therapeutics as inherent medication. Acta Pharm Sin B 2020; 10:239-248. [PMID: 32082970 PMCID: PMC7016289 DOI: 10.1016/j.apsb.2019.11.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 08/26/2019] [Accepted: 08/29/2019] [Indexed: 01/01/2023] Open
Abstract
Nowadays, nanotechnology is revolutionizing the approaches to different fields from manufacture to health. Carbon nanotubes (CNTs) as promising candidates in nanomedicine have great potentials in developing novel entities for central nervous system pathologies, due to their excellent physicochemical properties and ability to interface with neurons and neuronal circuits. However, most of the studies mainly focused on the drug delivery and bioimaging applications of CNTs, while neglect their application prospects as therapeutic drugs themselves. At present, the relevant reviews are not available yet. Herein we summarized the latest advances on the biomedical and therapeutic applications of CNTs in vitro and in vivo for neurological diseases treatments as inherent therapeutic drugs. The biological mechanisms of CNTs-mediated bio-medical effects and potential toxicity of CNTs were also intensely discussed. It is expected that CNTs will exploit further neurological applications on disease therapy in the near future.
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Key Words
- AD, Alzheimer's disease
- ALS, amyotrophic lateral sclerosis
- BBB, blood–brain barrier
- CNS, central nervous system
- CNT-N, nitrogen-doped carbon nanotubes
- CNTs, carbon nanotubes
- Carbon nanotubes
- CpG, oligodeoxynucleotides
- DTPA, diethylentriaminepentaacetic
- Drug delivery
- EBs, embryoid bodies
- EDC·HCl, 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride
- GO, graphene oxide
- HD, Huntington's disease
- Inherent medication
- MCAO, middle cerebral artery occlusion
- METH, methamphetamine
- MPO, myeloperoxidase
- MWCNTTs, multi-walled nanotube towers
- MWCNTs, multi-walled carbon nanotubes
- ND, nanodiamond
- NHS, N-hydroxysuccinimide
- NR, nanorod
- NSCs, neural stem cells
- Nervous system diseases
- PBEC, porcine brain endothelial cells
- PCL, polycaprolactone
- PD, Parkinson's disease
- PEG, polyethylene-glycol
- PET, position emission tomography
- PMo11V, tetrabutylammonium salt of phosphovanadomolybdate
- POCs, polycyclic organic compounds
- PPy/SWCNT, polypyrrole/single-walled carbon nanotube
- RES, reticuloendothelial system
- SWCNTP, single-walled nanotube paper
- SWCNTs, single-walled carbon nanotubes
- TLR9, the toll-like receptor-9
- TMZ, temozolomide
- Therapeutic drug
- Toxicity
- aSWCNTs, aggregated SWCNTs
- f-CNTs, functionalized carbon nanotubes
- hNSCs, human neural stem cells
- siRNA, small interfering RNA
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Affiliation(s)
- Chenyang Xiang
- Translational Medicine Center, Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Second Affiliated Hospital, Guangzhou Medical University, Guangzhou 510260, China
| | - Yuxuan Zhang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Weisheng Guo
- Translational Medicine Center, Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Second Affiliated Hospital, Guangzhou Medical University, Guangzhou 510260, China
| | - Xing-Jie Liang
- Translational Medicine Center, Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Second Affiliated Hospital, Guangzhou Medical University, Guangzhou 510260, China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, China
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Gonzalez-Carter D, Goode AE, Kiryushko D, Masuda S, Hu S, Lopes-Rodrigues R, Dexter DT, Shaffer MSP, Porter AE. Quantification of blood-brain barrier transport and neuronal toxicity of unlabelled multiwalled carbon nanotubes as a function of surface charge. NANOSCALE 2019; 11:22054-22069. [PMID: 31720664 DOI: 10.1039/c9nr02866h] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nanoparticles capable of penetrating the blood-brain barrier (BBB) will greatly advance the delivery of therapies against brain disorders. Carbon nanotubes hold great potential as delivery vehicles due to their high aspect-ratio and cell-penetrating ability. Studies have shown multiwalled carbon nanotubes (MWCNT) cross the BBB, however they have largely relied on labelling methods to track and quantify transport, or on individual electron microscopy images to qualitatively assess transcytosis. Therefore, new direct and quantitative methods, using well-defined and unlabelled MWCNT, are needed to compare BBB translocation of different MWCNT types. Using highly controlled anionic (-), cationic (+) and non-ionic (0) functionalized MWCNT (fMWCNT), we correlate UV-visible spectroscopy with quantitative transmission electron microscopy, quantified from c. 270 endothelial cells, to examine cellular uptake, BBB transport and neurotoxicity of unlabelled fMWCNT. Our results demonstrate that: (i) a large fraction of cationic and non-ionic, but not anionic fMWCNT become trapped at the luminal brain endothelial cell membrane; (ii) despite high cell association, fMWCNT uptake by brain endothelial cells is low (<1.5% ID) and does not correlate with BBB translocation, (iii) anionic fMWCNT have highest transport levels across an in vitro model of the human BBB compared to non-ionic or cationic nanotubes; and (iv) fMWCNT are not toxic to hippocampal neurons at relevant abluminal concentrations; however, fMWCNT charge has an effect on carbon nanotube neurotoxicity at higher fMWCNT concentrations. This quantitative combination of microscopy and spectroscopy, with cellular assays, provides a crucial strategy to predict brain penetration efficiency and neurotoxicity of unlabelled MWCNT and other nanoparticle technologies relevant to human health.
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Raphey VR, Henna TK, Nivitha KP, Mufeedha P, Sabu C, Pramod K. Advanced biomedical applications of carbon nanotube. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 100:616-630. [PMID: 30948098 DOI: 10.1016/j.msec.2019.03.043] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 02/26/2019] [Accepted: 03/11/2019] [Indexed: 01/13/2023]
Abstract
With advances in nanotechnology, the applications of nanomaterial are developing widely and greatly. The characteristic properties of carbon nanotubes (CNTs) make them the most selective candidate for various multi-functional applications. The greater surface area of the CNTs in addition to the capability to manipulate the surfaces and dimensions has provided greater potential for this nanomaterial. The CNTs possess greater potential for applications in biomedicine due to their vital electrical, chemical, thermal, and mechanical properties. The unique properties of CNT are exploited for numerous applications in the biomedical field. They are useful in both therapeutic and diagnostic applications. They form novel carrier systems which are also capable of site-specific delivery of therapeutic agents. In addition, CNTs are of potential application in biosensing. Many recently reported advanced systems of CNT could be exploited for their immense potential in biomedicine in the future.
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Affiliation(s)
- V R Raphey
- College of Pharmaceutical Sciences, Govt. Medical College, Kozhikode, Kerala, India
| | - T K Henna
- College of Pharmaceutical Sciences, Govt. Medical College, Kozhikode, Kerala, India
| | - K P Nivitha
- College of Pharmaceutical Sciences, Govt. Medical College, Kozhikode, Kerala, India
| | - P Mufeedha
- College of Pharmaceutical Sciences, Govt. Medical College, Kozhikode, Kerala, India
| | - Chinnu Sabu
- College of Pharmaceutical Sciences, Govt. Medical College, Kozhikode, Kerala, India
| | - K Pramod
- College of Pharmaceutical Sciences, Govt. Medical College, Kozhikode, Kerala, India.
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Pirbhai M, Chandrasekar S, Zheng M, Ignatova T, Rotkin SV, Jedlicka SS. Augmentation of C17.2 Neural Stem Cell Differentiation via Uptake of Low Concentrations of ssDNA‐Wrapped Single‐Walled Carbon Nanotubes. ACTA ACUST UNITED AC 2019; 3:e1800321. [DOI: 10.1002/adbi.201800321] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Massooma Pirbhai
- Department of Physics Susquehanna University 514 University Ave. Selinsgrove PA 17870 USA
| | - Swetha Chandrasekar
- Department of Bioengineering Lehigh University 111 Research Drive Bethlehem PA 18015 USA
| | - Ming Zheng
- National Institute of Standards and Technology 1000 Bureau Drive, M/S 8542 Gaithersburg MD 20899 USA
| | - Tetyana Ignatova
- Department of Nanoscience Joint School of Nanoscience and Nanoengineering University of North Carolina at Greensboro 2907 East Gate City Blvd. Greensboro NC 27401 USA
| | - Slava V. Rotkin
- Department of Engineering Science and Mechanics Materials Research Institute The Pennsylvania State University N‐332 Millennium Science Complex University Park PA 16802 USA
| | - Sabrina S. Jedlicka
- Department of Materials Science and Engineering Department of Bioengineering Lehigh University 5 E. Packer Ave. Bethlehem PA 18015 USA
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9
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Holdynski M, Dolinska J, Opallo M. Electrochemical behaviour of suspended redox-tagged carbon nanotubes at a rotating disc electrode. Electrochem commun 2019. [DOI: 10.1016/j.elecom.2018.12.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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10
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Sculpting neurotransmission during synaptic development by 2D nanostructured interfaces. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2018; 14:2521-2532. [DOI: 10.1016/j.nano.2017.01.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 12/08/2016] [Accepted: 01/04/2017] [Indexed: 11/23/2022]
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11
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Yeh YT, Tang Y, Lin Z, Fujisawa K, Lei Y, Zhou Y, Rotella C, Elías AL, Zheng SY, Mao Y, Liu Z, Lu H, Terrones M. Light-Emitting Transition Metal Dichalcogenide Monolayers under Cellular Digestion. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:1703321. [PMID: 29315867 DOI: 10.1002/adma.201703321] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 10/26/2017] [Indexed: 06/07/2023]
Abstract
2D materials cover a wide spectrum of electronic properties. Their applications are extended from electronic, optical, and chemical to biological. In terms of biomedical uses of 2D materials, the interactions between living cells and 2D materials are of paramount importance. However, biointerfacial studies are still in their infancy. This work studies how living organisms interact with transition metal dichalcogenide monolayers. For the first time, cellular digestion of tungsten disulfide (WS2 ) monolayers is observed. After digestion, cells intake WS2 and become fluorescent. In addition, these light-emitting cells are not only viable, but also able to pass fluorescent signals to their progeny cells after cell division. By combining synthesis of 2D materials and a cell culturing technique, a procedure for monitoring the interactions between WS2 monolayers and cells is developed. These observations open up new avenues for developing novel cellular labeling and imaging approaches, thus triggering further studies on interactions between 2D materials and living organisms.
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Affiliation(s)
- Yin-Ting Yeh
- Department of Physics and Center for 2-Dimensional and Layered Materials, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Yi Tang
- Department of Veterinary and Biomedical Science, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Zhong Lin
- Department of Physics and Center for 2-Dimensional and Layered Materials, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Kazunori Fujisawa
- Department of Physics and Center for 2-Dimensional and Layered Materials, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Yu Lei
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Yijing Zhou
- Department of Biology, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Christopher Rotella
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Ana Laura Elías
- Department of Physics and Center for 2-Dimensional and Layered Materials, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Si-Yang Zheng
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Yingwei Mao
- Department of Biology, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Zhiwen Liu
- Department of Electrical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Huaguang Lu
- Department of Veterinary and Biomedical Science, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Mauricio Terrones
- Department of Physics and Center for 2-Dimensional and Layered Materials, The Pennsylvania State University, University Park, PA, 16802, USA
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
- Department of Chemistry, The Pennsylvania State University, University Park, PA, 16802, USA
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Ignatova T, Chandrasekar S, Pirbhai M, Jedlicka SS, Rotkin SV. Micro-Raman spectroscopy as an enabling tool for long-term intracellular studies of nanomaterials at nanomolar concentration levels. J Mater Chem B 2017; 5:6536-6545. [DOI: 10.1039/c7tb00766c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Imaging of individual SWCNTs inside neural stem cells has been demonstrated using confocal scanning Raman microscopy. Hyperspectral Raman imaging allowed detection of nanomaterials applied to the cell in ultra-low doses in long-term studies.
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Affiliation(s)
- T. Ignatova
- Department of Materials Science and Engineering
- Lehigh University
- USA
| | - S. Chandrasekar
- Department of Materials Science and Engineering
- Lehigh University
- USA
| | - M. Pirbhai
- Department of Physics
- Susquehanna University
- Selinsgrove
- USA
| | - S. S. Jedlicka
- Department of Materials Science and Engineering
- Lehigh University
- USA
- Bioengineering Program
- Lehigh University
| | - S. V. Rotkin
- Department of Materials Science and Engineering
- Lehigh University
- USA
- Center for Advanced Materials & Nanotechnology
- Lehigh University
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Oprych KM, Whitby RLD, Mikhalovsky SV, Tomlins P, Adu J. Repairing Peripheral Nerves: Is there a Role for Carbon Nanotubes? Adv Healthc Mater 2016; 5:1253-71. [PMID: 27027923 DOI: 10.1002/adhm.201500864] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 01/10/2016] [Indexed: 12/16/2022]
Abstract
Peripheral nerve injury continues to be a major global health problem that can result in debilitating neurological deficits and neuropathic pain. Current state-of-the-art treatment involves reforming the damaged nerve pathway using a nerve autograft. Engineered nerve repair conduits can provide an alternative to the nerve autograft avoiding the inevitable tissue damage caused at the graft donor site. Commercially available nerve repair conduits are currently only considered suitable for repairing small nerve lesions; the design and performance of engineered conduits requires significant improvements to enable their use for repairing larger nerve defects. Carbon nanotubes (CNTs) are an emerging novel material for biomedical applications currently being developed for a range of therapeutic technologies including scaffolds for engineering and interfacing with neurological tissues. CNTs possess a unique set of physicochemical properties that could be useful within nerve repair conduits. This progress report aims to evaluate and consolidate the current literature pertinent to CNTs as a biomaterial for supporting peripheral nerve regeneration. The report is presented in the context of the state-of-the-art in nerve repair conduit design; outlining how CNTs may enhance the performance of next generation peripheral nerve repair conduits.
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Affiliation(s)
- Karen M. Oprych
- Department of Brain, Repair and Rehabilitation; Institute of Neurology; University College London; Queen Square London WC1N 3BG UK
| | | | - Sergey V. Mikhalovsky
- School of Engineering; Nazarbayev University; Astana 010000 Kazakhstan
- School of Pharmacy and Biomolecular Sciences; University of Brighton; Brighton BN2 4GJ UK
| | | | - Jimi Adu
- School of Pharmacy and Biomolecular Science; University of Brighton; Brighton BN2 4GJ UK
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14
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Rauti R, Lozano N, León V, Scaini D, Musto M, Rago I, Ulloa Severino FP, Fabbro A, Casalis L, Vázquez E, Kostarelos K, Prato M, Ballerini L. Graphene Oxide Nanosheets Reshape Synaptic Function in Cultured Brain Networks. ACS NANO 2016; 10:4459-71. [PMID: 27030936 DOI: 10.1021/acsnano.6b00130] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Graphene offers promising advantages for biomedical applications. However, adoption of graphene technology in biomedicine also poses important challenges in terms of understanding cell responses, cellular uptake, or the intracellular fate of soluble graphene derivatives. In the biological microenvironment, graphene nanosheets might interact with exposed cellular and subcellular structures, resulting in unexpected regulation of sophisticated biological signaling. More broadly, biomedical devices based on the design of these 2D planar nanostructures for interventions in the central nervous system require an accurate understanding of their interactions with the neuronal milieu. Here, we describe the ability of graphene oxide nanosheets to down-regulate neuronal signaling without affecting cell viability.
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Affiliation(s)
- Rossana Rauti
- Life Science Department, University of Trieste , 34127 Trieste, Italy
| | - Neus Lozano
- Nanomedicine Lab, School of Medicine and National Graphene Institute, Faculty of Medical & Human Sciences, University of Manchester , M13 9PL Manchester, United Kingdom
| | - Veronica León
- Departamento de Química Orgánica, Facultad de Ciencias y Tecnologías Químicas-IRICA, Universidad de Castilla La Mancha , 13071 Ciudad Real, Spain
| | - Denis Scaini
- Life Science Department, University of Trieste , 34127 Trieste, Italy
- ELETTRA Synchrotron Light Source , 34149 Trieste, Italy
| | - Mattia Musto
- International School for Advanced Studies (SISSA) , 34136 Trieste, Italy
| | - Ilaria Rago
- ELETTRA Synchrotron Light Source , 34149 Trieste, Italy
| | | | - Alessandra Fabbro
- Department of Chemical and Pharmaceutical Sciences, University of Trieste , 34127 Trieste, Italy
| | | | - Ester Vázquez
- Departamento de Química Orgánica, Facultad de Ciencias y Tecnologías Químicas-IRICA, Universidad de Castilla La Mancha , 13071 Ciudad Real, Spain
| | - Kostas Kostarelos
- Nanomedicine Lab, School of Medicine and National Graphene Institute, Faculty of Medical & Human Sciences, University of Manchester , M13 9PL Manchester, United Kingdom
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical Sciences, University of Trieste , 34127 Trieste, Italy
- CIC BiomaGUNE, Parque Tecnológico de San Sebastián, Paseo Miramón, 182, 20009 San Sebastián, Guipúzcoa, Spain
- Basque Foundation for Science , Ikerbasque, Bilbao 48013, Spain
| | - Laura Ballerini
- Life Science Department, University of Trieste , 34127 Trieste, Italy
- International School for Advanced Studies (SISSA) , 34136 Trieste, Italy
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15
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Franca E, Jao PF, Fang SP, Alagapan S, Pan L, Yoon JH, Yoon YK, Wheeler BC. Scale of Carbon Nanomaterials Affects Neural Outgrowth and Adhesion. IEEE Trans Nanobioscience 2016; 15:11-8. [PMID: 26829799 PMCID: PMC4791169 DOI: 10.1109/tnb.2016.2519505] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Carbon nanomaterials have become increasingly popular microelectrode materials for neuroscience applications. Here we study how the scale of carbon nanotubes and carbon nanofibers affect neural viability, outgrowth, and adhesion. Carbon nanotubes were deposited on glass coverslips via a layer-by-layer method with polyethylenimine (PEI). Carbonized nanofibers were fabricated by electrospinning SU-8 and pyrolyzing the nanofiber depositions. Additional substrates tested were carbonized and SU-8 thin films and SU-8 nanofibers. Surfaces were O2-plasma treated, coated with varying concentrations of PEI, seeded with E18 rat cortical cells, and examined at 3, 4, and 7 days in vitro (DIV). Neural adhesion was examined at 4 DIV utilizing a parallel plate flow chamber. At 3 DIV, neural viability was lower on the nanofiber and thin film depositions treated with higher PEI concentrations which corresponded with significantly higher zeta potentials (surface charge); this significance was drastically higher on the nanofibers suggesting that the nanostructure may collect more PEI molecules, causing increased toxicity. At 7 DIV, significantly higher neurite outgrowth was observed on SU-8 nanofiber substrates with nanofibers a significant fraction of a neuron's size. No differences were detected for carbonized nanofibers or carbon nanotubes. Both carbonized and SU-8 nanofibers had significantly higher cellular adhesion post-flow in comparison to controls whereas the carbon nanotubes were statistically similar to control substrates. These data suggest a neural cell preference for larger-scale nanomaterials with specific surface treatments. These characteristics could be taken advantage of in the future design and fabrication of neural microelectrodes.
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Gottipati MK, Verkhratsky A, Parpura V. Probing astroglia with carbon nanotubes: modulation of form and function. Philos Trans R Soc Lond B Biol Sci 2015; 369:20130598. [PMID: 25225092 DOI: 10.1098/rstb.2013.0598] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Carbon nanotubes (CNTs) have shown much promise in neurobiology and biomedicine. Their structural stability and ease of chemical modification make them compatible for biological applications. In this review, we discuss the effects that chemically functionalized CNTs, applied as colloidal solutes or used as strata, have on the morpho-functional properties of astrocytes, the most abundant cells present in the brain, with an insight into the potential use of CNTs in neural prostheses.
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Affiliation(s)
- Manoj K Gottipati
- Department of Neurobiology, University of Alabama, Birmingham, AL 35294, USA Department of Biomedical Engineering, University of Alabama, Birmingham, AL 35294, USA
| | - Alexei Verkhratsky
- Faculty of Life Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK Achucarro Center for Neuroscience, IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain Department of Neurosciences, University of the Basque Country UPV/EHU, 48940 Leioa, Spain
| | - Vladimir Parpura
- Department of Neurobiology, University of Alabama, Birmingham, AL 35294, USA Department of Biomedical Engineering, University of Alabama, Birmingham, AL 35294, USA Department of Biotechnology, University of Rijeka, 51000 Rijeka, Croatia
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Ahn HS, Hwang JY, Kim MS, Lee JY, Kim JW, Kim HS, Shin US, Knowles JC, Kim HW, Hyun JK. Carbon-nanotube-interfaced glass fiber scaffold for regeneration of transected sciatic nerve. Acta Biomater 2015; 13:324-34. [PMID: 25463487 DOI: 10.1016/j.actbio.2014.11.026] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 11/05/2014] [Accepted: 11/13/2014] [Indexed: 12/26/2022]
Abstract
Carbon nanotubes (CNTs), with their unique and unprecedented properties, have become very popular for the repair of tissues, particularly for those requiring electrical stimuli. Whilst most reports have demonstrated in vitro neural cell responses of the CNTs, few studies have been performed on the in vivo efficacy of CNT-interfaced biomaterials in the repair and regeneration of neural tissues. Thus, we report here for the first time the in vivo functions of CNT-interfaced nerve conduits in the regeneration of transected rat sciatic nerve. Aminated CNTs were chemically tethered onto the surface of aligned phosphate glass microfibers (PGFs) and CNT-interfaced PGFs (CNT-PGFs) were successfully placed into three-dimensional poly(L/D-lactic acid) (PLDLA) tubes. An in vitro study confirmed that neurites of dorsal root ganglion outgrew actively along the aligned CNT-PGFs and that the CNT interfacing significantly increased the maximal neurite length. Sixteen weeks after implantation of a CNT-PGF nerve conduit into the 10 mm gap of a transected rat sciatic nerve, the number of regenerating axons crossing the scaffold, the cross-sectional area of the re-innervated muscles and the electrophysiological findings were all significantly improved by the interfacing with CNTs. This first in vivo effect of using a CNT-interfaced scaffold in the regeneration process of a transected rat sciatic nerve strongly supports the potential use of CNT-interfaced PGFs at the interface between the nerve conduit and peripheral neural tissues.
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Moradi O, Sadegh H, Shahryari-Ghoshekandi R, Norouzi M. Application of Carbon Nanotubes in Nanomedicine. HANDBOOK OF RESEARCH ON DIVERSE APPLICATIONS OF NANOTECHNOLOGY IN BIOMEDICINE, CHEMISTRY, AND ENGINEERING 2015. [DOI: 10.4018/978-1-4666-6363-3.ch006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Carbon Nanotubes (CNTs) have become a technological field with great potential since they can be applied in almost every aspect of modern life. One of the sectors where CNTs are expected to play a vital role is the field of medical science. This chapter focuses on the latest developments in applications of CNTs for nanomedicine. A brief history of CNTs and a general introduction to the field are presented. Then, the preparation of CNTs that makes them ideal for use in medical applications is highlighted. Examples of common applications, including cell penetration, drug delivery, and gene delivery and imaging are given. Finally, the toxicity of carbon nanotubes is discussed.
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Fattahi P, Yang G, Kim G, Abidian MR. A review of organic and inorganic biomaterials for neural interfaces. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:1846-85. [PMID: 24677434 PMCID: PMC4373558 DOI: 10.1002/adma.201304496] [Citation(s) in RCA: 300] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 10/08/2013] [Indexed: 05/18/2023]
Abstract
Recent advances in nanotechnology have generated wide interest in applying nanomaterials for neural prostheses. An ideal neural interface should create seamless integration into the nervous system and performs reliably for long periods of time. As a result, many nanoscale materials not originally developed for neural interfaces become attractive candidates to detect neural signals and stimulate neurons. In this comprehensive review, an overview of state-of-the-art microelectrode technologies provided fi rst, with focus on the material properties of these microdevices. The advancements in electro active nanomaterials are then reviewed, including conducting polymers, carbon nanotubes, graphene, silicon nanowires, and hybrid organic-inorganic nanomaterials, for neural recording, stimulation, and growth. Finally, technical and scientific challenges are discussed regarding biocompatibility, mechanical mismatch, and electrical properties faced by these nanomaterials for the development of long-lasting functional neural interfaces.
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Affiliation(s)
- Pouria Fattahi
- Biomedical Engineering Department and Chemical Engineering Departments, Pennsylvania State University, University Park, PA, 16802, USA
| | - Guang Yang
- Biomedical Engineering Department, Pennsylvania State University, University Park, PA, 16802, USA
| | - Gloria Kim
- Biomedical Engineering Department, Pennsylvania State University, University Park, PA, 16802, USA
| | - Mohammad Reza Abidian
- Biomedical Engineering Department, Materials Science & Engineering Department, Chemical Engineering Department, Materials Research Institute, Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, 16802, USA
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20
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Fabbro A, Prato M, Ballerini L. Carbon nanotubes in neuroregeneration and repair. Adv Drug Deliv Rev 2013; 65:2034-44. [PMID: 23856411 DOI: 10.1016/j.addr.2013.07.002] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 04/29/2013] [Accepted: 07/05/2013] [Indexed: 01/16/2023]
Abstract
In the last decade, we have experienced an increasing interest and an improved understanding of the application of nanotechnology to the nervous system. The aim of such studies is that of developing future strategies for tissue repair to promote functional recovery after brain damage. In this framework, carbon nanotube based technologies are emerging as particularly innovative tools due to the outstanding physical properties of these nanomaterials together with their recently documented ability to interface neuronal circuits, synapses and membranes. This review will discuss the state of the art in carbon nanotube technology applied to the development of devices able to drive nerve tissue repair; we will highlight the most exciting findings addressing the impact of carbon nanotubes in nerve tissue engineering, focusing in particular on neuronal differentiation, growth and network reconstruction.
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21
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Meng L, Jiang A, Chen R, Li CZ, Wang L, Qu Y, Wang P, Zhao Y, Chen C. Inhibitory effects of multiwall carbon nanotubes with high iron impurity on viability and neuronal differentiation in cultured PC12 cells. Toxicology 2013; 313:49-58. [DOI: 10.1016/j.tox.2012.11.011] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2012] [Revised: 11/23/2012] [Accepted: 11/25/2012] [Indexed: 01/29/2023]
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22
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Gottipati MK, Samuelson JJ, Kalinina I, Bekyarova E, Haddon RC, Parpura V. Chemically functionalized single-walled carbon nanotube films modulate the morpho-functional and proliferative characteristics of astrocytes. NANO LETTERS 2013; 13:4387-4392. [PMID: 23937522 DOI: 10.1021/nl402226z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We used single-walled carbon nanotube (CNT) films to modulate the morpho-functional and proliferative characteristics of astrocytes. When plated on the CNT films of various thicknesses, astrocytes grow bigger and rounder in shape with a decrease in the immunoreactivity of glial fibrillary acidic protein along with an increase in their proliferation, changes associated with the dedifferentiation of astrocytes in culture. Thus, CNT films, as a coating material for electrodes used in brain machine interface, could reduce astrogliosis around the site of implantation.
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Affiliation(s)
- Manoj K Gottipati
- Departments of Neurobiology and Biomedical Engineering, University of Alabama , Birmingham, Alabama 35294, United States
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23
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Inhibition of catecholamine secretion by iron-rich and iron-deprived multiwalled carbon nanotubes in chromaffin cells. Neurotoxicology 2013; 39:84-94. [PMID: 23999117 DOI: 10.1016/j.neuro.2013.08.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Revised: 07/23/2013] [Accepted: 08/21/2013] [Indexed: 01/26/2023]
Abstract
The assay of the toxic effects of carbon nanotubes (CNTs) on human health is a stringent need in view of their expected increasing exploitation in industrial and biomedical applications. Most studies so far have been focused on lung toxicity, as the respiratory tract is the main entry of airborne particulate, but there is also recent evidence on the existence of toxic effects of multiwalled carbon nanotubes (MWCNTs) on neuronal and neuroendocrine cells (Belyanskaya et al., 2009; Xu et al., 2009; Gavello et al., 2012). Commercial MWCNTs often contain large amounts of metals deriving from the catalyst used during their synthesis. Since metals, particularly iron, may contribute to the toxicity of MWCNTs, we compared here the effects of two short MWCNTs samples (<5μm length), differing only in their iron content (0.5 versus 0.05% w/w) on the secretory responses of neurotransmitters in mouse chromaffin cells. We found that both iron-rich (MWCNT+Fe) and iron-deprived (MWCNT-Fe) samples enter chromaffin cells after 24h exposure, even though incorporation was attenuated in the latter case (40% versus 78% of cells). As a consequence of MWCNT+Fe or MWCNT-Fe exposure (50-263μg/ml, 24h), catecholamine secretion of chromaffin cells is drastically impaired because of the decreased Ca(2+)-dependence of exocytosis, reduced size of ready-releasable pool and lowered rate of vesicle release. On the contrary, both MWCNTs were ineffective in changing the kinetics of neurotransmitter release of single chromaffin granules and their quantal content. Overall, our data indicate that both MWCNT samples dramatically impair secretion in chromaffin cells, thus uncovering a true depressive action of CNTs mainly associated to their structure and degree of aggregation. This cellular "loss-of-function" is only partially attenuated in iron-deprived samples, suggesting a minor role of iron impurities on MWCNTs toxicity in chromaffin cells exocytosis.
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24
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Bassyouni F, ElHalwany N, Abdel Rehim M, Neyfeh M. Advances and new technologies applied in controlled drug delivery system. RESEARCH ON CHEMICAL INTERMEDIATES 2013. [DOI: 10.1007/s11164-013-1338-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Meng L, Chen R, Jiang A, Wang L, Wang P, Li CZ, Bai R, Zhao Y, Autrup H, Chen C. Short multiwall carbon nanotubes promote neuronal differentiation of PC12 cells via up-regulation of the neurotrophin signaling pathway. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 9:1786-1798. [PMID: 23135796 DOI: 10.1002/smll.201201388] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Revised: 08/28/2012] [Indexed: 06/01/2023]
Abstract
Numerous unique properties of carbon nanotubes make them attractive for applications in neurobiology such as drug delivery, tissue regeneration, and as scaffolds for neuronal growth. In this study, the critical roles of the length of multiwall carbon nanotubes (MWCNTs) on a neuronal-like model cell line PC12 cells are investiaged. Incubation of PC12 cells with carboxylated MWCNTs did not significantly affect cellular morphology and viability at lower concentrations. Short MWCNTs show higher cellular uptake and more obvious removal compared to longer ones, which can result in higher ability to promote PC12 cell differentiation. Pre-incubation of short MWCNTs can up-regulate the expression of neurotrophin signaling pathway-associated TrkA/p75 receptors and Pincher/Gap43/TH proteins, which might be the underlying mechanism for the improved differentiation in PC12 cells. The current results provide insight for future applications of MWCNTs in neuron drug delivery and neurodegenerative disease treatment.
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Affiliation(s)
- Li Meng
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, National Center for Nanoscience and Technology of China, Beijing 100190, China
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26
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Blanco M, Álvarez P, Blanco C, Jiménez MV, Fernández-Tornos J, Pérez-Torrente JJ, Oro LA, Menéndez R. Enhanced Hydrogen-Transfer Catalytic Activity of Iridium N-Heterocyclic Carbenes by Covalent Attachment on Carbon Nanotubes. ACS Catal 2013. [DOI: 10.1021/cs4000798] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matías Blanco
- Instituto Nacional del Carbón-INCAR, C.S.I.C., 33011-Oviedo, Spain
| | - Patricia Álvarez
- Instituto Nacional del Carbón-INCAR, C.S.I.C., 33011-Oviedo, Spain
| | - Clara Blanco
- Instituto Nacional del Carbón-INCAR, C.S.I.C., 33011-Oviedo, Spain
| | - M. Victoria Jiménez
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009-Zaragoza,
Spain
| | - Javier Fernández-Tornos
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009-Zaragoza,
Spain
| | - Jesús J. Pérez-Torrente
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009-Zaragoza,
Spain
| | - Luis A. Oro
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009-Zaragoza,
Spain
| | - Rosa Menéndez
- Instituto Nacional del Carbón-INCAR, C.S.I.C., 33011-Oviedo, Spain
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Chen PH, Hsiao KM, Chou CC. Molecular characterization of toxicity mechanism of single-walled carbon nanotubes. Biomaterials 2013; 34:5661-9. [PMID: 23623425 DOI: 10.1016/j.biomaterials.2013.03.093] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 03/29/2013] [Indexed: 11/30/2022]
Abstract
Carbon nanotubes (CNTs) are one of widely used nanomaterials in industry and biomedicine. The potential impact of single-walled carbon nanotubes (SWCNTs) was evaluated using Caenorhabditis elegans (C. elegans) as a toxicological animal model. SWCNTs are extremely hydrophobic to form large agglomerates in aqueous solutions. Highly soluble amide-modified SWCNTs (a-SWCNTs) were therefore used in the present study so that the exact impact of SWCNTs could be studied. No significant toxicity was observed in C. elegans due to the amide modification. a-SWCNTs were efficiently taken up by worms and caused acute toxicity, including retarded growth, shortened lifespan and defective embryogenesis. The resulting toxicity was reversible since C. elegans could recover from a-SWCNT-induced toxicity once the exposure terminates. Chronic exposure to low doses of a-SWCNTs during all development stages could also cause a toxic accumulation in C. elegans. Genome-wide gene expression analysis was performed to investigate the toxic molecular mechanisms. Functional genomic analysis and molecular biology validation suggest that defective endocytosis, the decreased activity of the citrate cycle and the reduced nuclear translocation of DAF-16 transcription factor play key roles in inducing the observed a-SWCNT toxicity in worms. The present study presents an integrated approach to evaluating the toxicity of nanomaterials at the organism and molecular level for human and environmental health and demonstrates that traditional toxicological endpoints associated with functional genomic analysis can provide global and thorough insight into toxicity.
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Affiliation(s)
- Po-Hsuan Chen
- Department of Life Science and Institute of Molecular Biology, National Chung Cheng University, Min-Hsiung, Chia-Yi 62102, Taiwan.
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28
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Hwang JY, Shin US, Jang WC, Hyun JK, Wall IB, Kim HW. Biofunctionalized carbon nanotubes in neural regeneration: a mini-review. NANOSCALE 2013; 5:487-97. [PMID: 23223857 DOI: 10.1039/c2nr31581e] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Carbon nanotubes (CNTs) have become an intriguing and promising biomaterial platform for the regeneration and functional recovery of damaged nerve tissues. The unique electrical, structural and mechanical properties, diversity of available surface chemistry and cell-penetrating ability of CNTs have made them useful implantable matrices or carriers for the delivery of therapeutic molecules. Although there are still challenges being faced in the clinical applications of CNTs mainly due to their toxicity, many studies to overcome this issue have been published. Modification of CNTs with chemical groups to ensure their dissolution in aqueous media is one possible solution. Functionalization of CNTs with biologically relevant and effective molecules (biofunctionalization) is also a promising strategy to provide better biocompatibility and selectivity for neural regeneration. Here, we review recent advances in the use of CNTs to promote neural regeneration.
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Affiliation(s)
- Ji-Young Hwang
- Institute of Tissue Regeneration and Engineering, Dankook University, Cheonan 330-714, Republic of Korea
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29
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Parpura V, Silva GA, Tass PA, Bennet KE, Meyyappan M, Koehne J, Lee KH, Andrews RJ. Neuromodulation: selected approaches and challenges. J Neurochem 2012. [PMID: 23190025 DOI: 10.1111/jnc.12105] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The brain operates through complex interactions in the flow of information and signal processing within neural networks. The 'wiring' of such networks, being neuronal or glial, can physically and/or functionally go rogue in various pathological states. Neuromodulation, as a multidisciplinary venture, attempts to correct such faulty nets. In this review, selected approaches and challenges in neuromodulation are discussed. The use of water-dispersible carbon nanotubes has been proven effective in the modulation of neurite outgrowth in culture and in aiding regeneration after spinal cord injury in vivo. Studying neural circuits using computational biology and analytical engineering approaches brings to light geometrical mapping of dynamics within neural networks, much needed information for stimulation interventions in medical practice. Indeed, sophisticated desynchronization approaches used for brain stimulation have been successful in coaxing 'misfiring' neuronal circuits to resume productive firing patterns in various human disorders. Devices have been developed for the real-time measurement of various neurotransmitters as well as electrical activity in the human brain during electrical deep brain stimulation. Such devices can establish the dynamics of electrochemical changes in the brain during stimulation. With increasing application of nanomaterials in devices for electrical and chemical recording and stimulating in the brain, the era of cellular, and even intracellular, precision neuromodulation will soon be upon us.
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Affiliation(s)
- Vladimir Parpura
- Department of Neurobiology, Center for Glial Biology in Medicine, Atomic Force Microscopy and Nanotechnology Laboratories, Civitan International Research Center, Evelyn F. McKnight Brain Institute, University of Alabama, Birmingham, AL 35294, USA.
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30
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Parpura V, Verkhratsky A. Astrogliopathology: could nanotechnology restore aberrant calcium signalling and pathological astroglial remodelling? BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2012; 1833:1625-31. [PMID: 23219860 DOI: 10.1016/j.bbamcr.2012.11.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Revised: 11/23/2012] [Accepted: 11/24/2012] [Indexed: 12/19/2022]
Abstract
Pathology of the brain is caused by the deficiency in tissue homeostasis. As the main homeostatic element of the mammalian nervous system is represented by astrocytes, these glial cells are involved in many, if not all, brain disorders. Diseased astrocytes undergo a variety of morphological and functional changes, including deregulation of calcium dynamics. To rectify undesirable changes in astrocytes and/or neurones that occur in disease, we postulate the future use of nanotechnology-based therapeutics. Carbon nanotubes emerged as one of the most promising advanced nanomaterials for use in neuroprosthesis. Recently, they have been used to affect morpho-functional characteristics of astrocytes. This article is part of a Special Issue entitled: 12th European Symposium on Calcium.
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Affiliation(s)
- Vladimir Parpura
- Department of Neurobiology, University of Alabama, Birmingham, AL 35294, USA.
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31
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Gottipati MK, Kalinina I, Bekyarova E, Haddon RC, Parpura V. Chemically functionalized water-soluble single-walled carbon nanotubes modulate morpho-functional characteristics of astrocytes. NANO LETTERS 2012; 12:4742-4747. [PMID: 22924813 DOI: 10.1021/nl302178s] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We report the use of chemically functionalized water-soluble single-walled carbon nanotubes (ws-SWCNTs) for the modulation of morpho-functional characteristics of astrocytes. When added to the culturing medium, ws-SWCNTs were able to make astrocytes larger and stellate/mature, changes associated with the increase in glial fibrillary acidic protein immunoreactivity. Thus, ws-SWCNTs could have more beneficial effects at the injury site than previously thought; by affecting astrocytes, they could provide for a more comprehensive re-establishment of the brain computational power.
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Affiliation(s)
- Manoj K Gottipati
- Department of Neurobiology, University of Alabama, Birmingham, Alabama 35294, United States
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32
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Tonelli FMP, Santos AK, Gomes KN, Lorençon E, Guatimosim S, Ladeira LO, Resende RR. Carbon nanotube interaction with extracellular matrix proteins producing scaffolds for tissue engineering. Int J Nanomedicine 2012; 7:4511-29. [PMID: 22923989 PMCID: PMC3423153 DOI: 10.2147/ijn.s33612] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
In recent years, significant progress has been made in organ transplantation, surgical reconstruction, and the use of artificial prostheses to treat the loss or failure of an organ or bone tissue. In recent years, considerable attention has been given to carbon nanotubes and collagen composite materials and their applications in the field of tissue engineering due to their minimal foreign-body reactions, an intrinsic antibacterial nature, biocompatibility, biodegradability, and the ability to be molded into various geometries and forms such as porous structures, suitable for cell ingrowth, proliferation, and differentiation. Recently, grafted collagen and some other natural and synthetic polymers with carbon nanotubes have been incorporated to increase the mechanical strength of these composites. Carbon nanotube composites are thus emerging as potential materials for artificial bone and bone regeneration in tissue engineering.
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Affiliation(s)
- Fernanda M P Tonelli
- Cell Signaling and Nanobiotechnology Laboratory, Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Brazil
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33
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Bai Y, Ho S, Kotov NA. Direct-write maskless lithography of LBL nanocomposite films and its prospects for MEMS technologies. NANOSCALE 2012; 4:4393-8. [PMID: 22740054 PMCID: PMC3427742 DOI: 10.1039/c2nr30197k] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Application of nanocomposites in MEMS, flexible electronics, and biomedical devices is likely to demonstrate new performance standards and resolve a number of difficult technical problems enabled by the unique combinations of electrical, optical, and mechanical properties. This study explores the possibility of making microscale nanocomposite patterns using the fusion of two highly versatile techniques: direct-write maskless UV patterning and layer-by-layer assembly (LBL). Together they can be applied to the production of a wide variety of nanostructured coatings with complex patterns. Single-walled carbon nanotube (SWNT) and gold nanoparticle LBL nanocomposites assembled with chitosan (CH) were made into prototypical patterns such as concentric helices and bus-line-and-stimulation-pads (BLASPs) used in flexible antennas and neuroprosthetic devices. The spatial resolution of the technique was established with the standard line grids to be at least 1 μm. Gold nanoparticle films revealed better accuracy and higher resolution in direct-write patterning than SWNT composites, possibly due to the granular rather than fibrous nature of the composites. The conductivity of the patterned composites was 6.45 × 10(-5)Ω m and 3.80 × 10(-6)Ω m at 20 °C for nanotube and nanoparticle composites, respectively; in both cases it exceeds electrical parameters of similar composites. Fundamental and technological prospects of nanocomposite MEMS devices in different areas including implantable biomedical, sensing, and optical devices are discussed.
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Affiliation(s)
- Yongxiao Bai
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109–2136, USA
- Department of Materials Science and Engineering, Key Laboratory of Magnetism and Magnetic Materials, Lanzhou University, Lanzhou, 730000, China
| | - Szushen Ho
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109–2136, USA
| | - Nicholas A. Kotov
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109–2136, USA
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109–2136, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109–2136, USA
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Abstract
Cell culture has emerged as an important research method for studying the effects of carbon nanotubes (CNTs) on primary neurons. We describe the procedure for preparation of dissociated mixed cell culture from postnatal rat hippocampi. Based on morphological criteria and specific neuronal cell markers, neurons can be selected within this mixed cell culture and studied. We present the procedure for the assessment of neuronal cell morphology based on intracellular fluorescence of the vital dye calcein that accumulates in live neurons. This procedure encompasses fluorescence imaging and measurement of the following parameters: neurite number, total neurite length, mean neurite length, number of growth cones, number of branches, and number of branches per neurite. These combined cell culture and fluorescence microscopy approaches can be successfully used for assessment of the effects that CNTs, as water-soluble agents, have on neuronal cell growth and neurite outgrowth.
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Application of carbon nanotubes in neurology: clinical perspectives and toxicological risks. Arch Toxicol 2012; 86:1009-20. [DOI: 10.1007/s00204-012-0860-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Accepted: 04/12/2012] [Indexed: 01/20/2023]
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Prakash S, Malhotra M, Shao W, Tomaro-Duchesneau C, Abbasi S. Polymeric nanohybrids and functionalized carbon nanotubes as drug delivery carriers for cancer therapy. Adv Drug Deliv Rev 2011; 63:1340-51. [PMID: 21756952 DOI: 10.1016/j.addr.2011.06.013] [Citation(s) in RCA: 145] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2010] [Revised: 06/21/2011] [Accepted: 06/27/2011] [Indexed: 12/25/2022]
Abstract
The scope of nanotechnology to develop target specific carriers to achieve higher therapeutic efficacy is gaining importance in the pharmaceutical and other industries. Specifically, the emergence of nanohybrid materials is posed to edge over chemotherapy and radiation therapy as cancer therapeutics. This is primarily because nanohybrid materials engage controlled production parameters in the making of engineered particles with specific size, shape, and other essential properties. It is widely expressed that these materials will significantly contribute to the next generation of medical care technology and pharmaceuticals in areas of disease diagnosis, disease prevention and many other treatment procedures. This review focuses on the currently used nanohybrid materials, polymeric nanoparticles and nanotubes, which show great potential as effective drug delivery systems for cancer therapy, as they can be grafted with cell-specific receptors and intracellular targeting molecules for the targeted delivery of therapeutics. Specifically, this article focuses on the current status, recent advancements, potentials and limitations of polymeric nanohybrids and functionalized carbon nanotubes as drug delivery carriers.
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Bottini M, Rosato N, Bottini N. PEG-Modified Carbon Nanotubes in Biomedicine: Current Status and Challenges Ahead. Biomacromolecules 2011; 12:3381-93. [PMID: 21916410 DOI: 10.1021/bm201020h] [Citation(s) in RCA: 166] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Massimo Bottini
- Sanford Burnham Medical Research Institute, 10901 North Torrey Pines
Road, La Jolla, California 92037, United States
- Department of Experimental Medicine
and Biochemical Sciences, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
| | - Nicola Rosato
- Department of Experimental Medicine
and Biochemical Sciences, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
- IRCCS-Neuromed Institute, Via Atinense 18, 86077 Pozzilli, Isernia, Italy
| | - Nunzio Bottini
- La Jolla Institute for Allergy and Immunology, 9420 Athena Circle, La Jolla,
California 92037, United States
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Roman JA, Niedzielko TL, Haddon RC, Parpura V, Floyd CL. Single-walled carbon nanotubes chemically functionalized with polyethylene glycol promote tissue repair in a rat model of spinal cord injury. J Neurotrauma 2011; 28:2349-62. [PMID: 21303267 DOI: 10.1089/neu.2010.1409] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Traumatic spinal cord injury (SCI) induces tissue damage and results in the formation of a cavity that inhibits axonal regrowth. Filling this cavity with a growth-permissive substrate would likely promote regeneration and repair. Single-walled carbon nanotubes functionalized with polyethylene glycol (SWNT-PEG) have been shown to increase the length of selected neurites in vitro. We hypothesized that administration of SWNT-PEG after experimental SCI will promote regeneration of axons into the lesion cavity and functional recovery of the hindlimbs. To evaluate this hypothesis, complete transection SCI was induced at the T9 vertebral level in adult female rats. One week after transection, the epicenter of the lesion was injected with 25??L of either vehicle (saline), or 1??g/mL, 10??g/mL, or 100??g/mL of SWNT-PEG. Behavioral analysis was conducted before injury, before treatment, and once every 7 days for 28 days after treatment. At 28 days post-injection the rats were euthanized and spinal cord tissue was extracted. Immunohistochemistry was used to detect the area of the cyst, the extent of the glial scar, and axonal morphology. We found that post-SCI administration of SWNT-PEG decreased lesion volume, increased neurofilament-positive fibers and corticospinal tract fibers in the lesion, and did not increase reactive gliosis. Additionally, post-SCI administration of SWNT-PEG induced a modest improvement in hindlimb locomotor recovery without inducing hyperalgesia. These data suggest that SWNT-PEG may be an effective material to promote axonal repair and regeneration after SCI.
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Affiliation(s)
- Jose A Roman
- Department of Physical Medicine and Rehabilitation, University of Alabama-Birmingham, Birmingham, Alabama 35249, USA
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39
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Abstract
Carbon nanotubes (CNT) are remarkable materials with a simple and inert molecular structure that gives rise to a range of potentially valuable physical and electronic properties, including high aspect ratio, high mechanical strength and excellent electrical conductivity. This review summarizes recent research on the application of CNT-based materials to study and control cells of the nervous system. It includes the use of CNT as cell culture substrates, to create patterned surfaces and to study cell-matrix interactions. It also summarizes recent investigations of CNT toxicity, particularly as related to neural cells. The application of CNT-based materials to directing the differentiation of progenitor and stem cells toward neural lineages is also discussed. The emphasis is on how CNT surface chemistry and nanotopography can be altered, and how such changes can affect neural cell function. This knowledge can be applied to creating improved neural interfaces and devices, as well as providing new approaches to neural tissue engineering and regeneration.
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Affiliation(s)
- Christopher M Voge
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
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40
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Cellot G, Ballerini L, Prato M, Bianco A. Neurons are able to internalize soluble carbon nanotubes: new opportunities or old risks? SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2010; 6:2630-2633. [PMID: 20859949 DOI: 10.1002/smll.201000906] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Affiliation(s)
- Giada Cellot
- Life Science Department, BRAIN, University of Trieste, Via Giorgeri 1, 34127 Trieste, Italy
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41
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Karousis N, Tagmatarchis N, Tasis D. Current Progress on the Chemical Modification of Carbon Nanotubes. Chem Rev 2010; 110:5366-97. [DOI: 10.1021/cr100018g] [Citation(s) in RCA: 1038] [Impact Index Per Article: 74.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Nikolaos Karousis
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 116 35 Athens, Greece
| | - Nikos Tagmatarchis
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 116 35 Athens, Greece
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42
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Sharma HS, Sharma A. Conference Scene: Nanoneuroprotection and nanoneurotoxicity: recent progress and future perspectives. Nanomedicine (Lond) 2010; 5:533-7. [DOI: 10.2217/nnm.10.25] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Recent developments in research related to nanoparticles in neuroscience necessitated the establishment of a new discipline known as ‘nanoneuroscience’. In order to understand the possible role of nanoparticles in the development of neurotoxicity or their potential use in neuroprotection, nine top experts across the world in this newly developing discipline were invited to present their cutting edge research in the 7th annual meeting of the Global College of Neuroprotection & Neuroregeneration in Stockholm, Sweden. The new developments suggest that more research is needed to understand the potential use of nanoparticles in nanomedicine. Highlights of these presentations are summarized in this article.
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Affiliation(s)
- Hari Shanker Sharma
- Cerebrovascular Research Laboratory, Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, University Hospital, Uppsala University, SE-75185, Uppsala, Sweden
| | - Aruna Sharma
- Cerebrovascular Research Laboratory, Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, University Hospital, Uppsala University, SE-75185, Uppsala, Sweden
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43
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Jeon HJ, Youk JH, Yu WR. Synthesis of water-soluble poly(vinyl alcohol)-grafted multi-walled carbon nanotubes. Macromol Res 2010. [DOI: 10.1007/s13233-010-0504-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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44
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Nho Y, Kim JY, Khang D, Webster TJ, Lee JE. Adsorption of mesenchymal stem cells and cortical neural stem cells on carbon nanotube/polycarbonate urethane. Nanomedicine (Lond) 2010; 5:409-17. [DOI: 10.2217/nnm.10.16] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Background & aim: Carbon nanotubes (CNTs) are a promising material for implantation due to the fact that CNTs are conductive and have nanostructured dimensions that mimic the 3D structure of proteins found in extracellular matrices. We have investigated whether the CNTs interact with various types of stem cells and either selectively enhance survival of stem cells or not. Materials & methods: CNTs used in the experiments are aligned with polycarbonate urethane. Experiments were carried out using mesenchymal stem cells (MSCs) and cortical derived neurospheres. Immunocytochemistry and scanning electron microscopic analysis were performed for determining the favorable surface material (either CNT or polycarbonate urethane array) for cell survival. Results: It was demonstrated that the MSCs and the neurosphere of cortex-derived neural stem cells (NSCs) grew on the CNT array and both MSCs and NSCs interacted with the aligned CNTs. The results suggest that CNTs assist in the proliferation of MSCs and aid differentiation of cortex-derived NSCs. Conclusion: CNTs may be a novel biocompatible nanophase material with the potential for aiding neuron differentiation.
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Affiliation(s)
- Yoonmi Nho
- Brain Korea 21 Project for Medical Science, Department of Anatomy, College of Medicine, Yonsei University, 134, shinchon-dong, seodaemun-gu, Seoul, 120–752, South Korea
| | - Jong Youl Kim
- Brain Korea 21 Project for Medical Science, Department of Anatomy, College of Medicine, Yonsei University, 134, shinchon-dong, seodaemun-gu, Seoul, 120–752, South Korea
| | - Dongwoo Khang
- Division of Engineering & Department of Orthopedic Surgery, Brown University, Providence, Rhode Island 02912, USA
| | - Thomas J Webster
- Division of Engineering & Department of Orthopedic Surgery, Brown University, Providence, Rhode Island 02912, USA
| | - Jong Eun Lee
- Brain Korea 21 Project for Medical Science, Department of Anatomy, College of Medicine, Yonsei University, 134, shinchon-dong, seodaemun-gu, Seoul, 120–752, South Korea
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45
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Jakubek LM, Marangoudakis S, Raingo J, Liu X, Lipscombe D, Hurt RH. The inhibition of neuronal calcium ion channels by trace levels of yttrium released from carbon nanotubes. Biomaterials 2009; 30:6351-7. [PMID: 19698989 DOI: 10.1016/j.biomaterials.2009.08.009] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2009] [Accepted: 08/05/2009] [Indexed: 11/28/2022]
Abstract
Carbon nanotubes (CNTs) are used with increasing frequency in neuroengineering applications. CNT scaffolds are used to transmit electrical stimulation to cultured neurons and to control outgrowth and branching patterns of neurites. CNTs have been reported to disrupt normal neuronal function including alterations in endocytotic capability and inhibition of ion channels. Calcium ion channels regulate numerous neuronal and cellular functions including endo and exocytosis, neurite outgrowth, and gene expression. Strong CNT interactions with neuronal calcium ion channels would have profound biological implications. Here we show that physiological solutions containing CNTs inhibit neuronal voltage-gated calcium ion channels in a dose-dependent and CNT sample-dependent manner with IC50 as low as 1.2 microg/ml. Importantly, we demonstrate that the inhibitory activity does not involve tubular graphene as previously reported, but rather very low concentrations of soluble yttrium released from the nanotube growth catalyst. Cationic yttrium potently inhibits calcium ion channel function with an inhibitory efficacy, IC50, of 0.07 ppm w/w. Because of this potency, unpurified and even some reportedly "purified" CNT samples contain sufficient bioavailable yttrium to inhibit channel function. Our results have important implications for emerging nano-neurotechnology and highlight the critical role that trace components can play in the biological response to complex nanomaterials.
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Affiliation(s)
- Lorin M Jakubek
- Division of Engineering, Brown University, Providence, RI 02912, USA
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46
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Abstract
New insights are emerging about the interactions between brain cells and carbon nanotubes, which could eventually lead to the development of nanoengineered neural devices.
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Affiliation(s)
- Gabriel A. Silva
- Departments of Bioengineering and Ophthalmology, University of California, San Diego, California 92037, USA. e-mail:
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47
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48
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Malarkey EB, Fisher KA, Bekyarova E, Liu W, Haddon RC, Parpura V. Conductive single-walled carbon nanotube substrates modulate neuronal growth. NANO LETTERS 2009; 9:264-8. [PMID: 19143503 PMCID: PMC2713032 DOI: 10.1021/nl802855c] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We used conductive nanotube films as substrates with which we could systematically vary the conductance to see how this property affects neuronal growth. Here we show that nanotube substrates in a narrow range of conductivity promote the outgrowth of neurites with a decrease in the number of growth cones as well as an increase in cell body area, while at higher conductance these effects disappear.
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Affiliation(s)
- Erik B. Malarkey
- Department of Neurobiology, Center for Glial Biology in Medicine, Atomic Force Microscopy & Nanotechnology Laboratories, Civitan International Research Center, Evelyn F. McKnight Brain Institute, University of Alabama, Birmingham, AL 35294
| | - Kirk A. Fisher
- Mailman School of Public Health, Columbia University, NY 10032
| | - Elena Bekyarova
- Departments of Chemistry and Chemical Engineering and Center for Nanoscale Science and Engineering, University of California, Riverside, CA 92521
| | - Wei Liu
- Department of Neurobiology, Center for Glial Biology in Medicine, Atomic Force Microscopy & Nanotechnology Laboratories, Civitan International Research Center, Evelyn F. McKnight Brain Institute, University of Alabama, Birmingham, AL 35294
| | - Robert C. Haddon
- Departments of Chemistry and Chemical Engineering and Center for Nanoscale Science and Engineering, University of California, Riverside, CA 92521
- corresponding authors e-mail: or , Correspondence during submission to:
| | - Vladimir Parpura
- Department of Neurobiology, Center for Glial Biology in Medicine, Atomic Force Microscopy & Nanotechnology Laboratories, Civitan International Research Center, Evelyn F. McKnight Brain Institute, University of Alabama, Birmingham, AL 35294
- corresponding authors e-mail: or , Correspondence during submission to:
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49
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Lee W, Parpura V. Carbon nanotubes as substrates/scaffolds for neural cell growth. PROGRESS IN BRAIN RESEARCH 2009; 180:110-25. [DOI: 10.1016/s0079-6123(08)80006-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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