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Ajaykumar AP, Nikhila K, Sabira O, Jayaraj KN, Varma SR, Rasheed VA, Binitha VS, Sreeja K, Ramakrishnan RM, Babu A. A bio-inspired approach for the synthesis of few-layer graphene using beetle defensive gland extract. RSC Adv 2024; 14:5729-5739. [PMID: 38370454 PMCID: PMC10870200 DOI: 10.1039/d3ra08733f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 02/06/2024] [Indexed: 02/20/2024] Open
Abstract
Graphene exhibits remarkable properties and holds substantial promise for diverse applications. Its unique combination of thermal, chemical, physical, and biological properties makes it an appealing material for a wide range of uses. But, the lack of an economical and environmentally friendly approach to synthesize good-quality graphene represents an immense challenge for the scientific community. What makes this research unique is the utilization of the defensive gland extract from the beetle species Luprops tristis (Order: Coleoptera, Family: Tenebrionidae) to synthesize a few layers of graphene (FLG). This innovative incorporation of natural resources and exploration of biologically inspired methods provides an eco-friendly and cost-effective alternative to conventional graphene production techniques. The exfoliated graphene displayed antimicrobial effects against both Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria, with particularly potent bactericidal activity. Additionally, the cytotoxicity assay demonstrated the anti-cancer properties of biosynthesized graphene against Daltons Lymphoma Acetic (DLA) cells.
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Affiliation(s)
- A P Ajaykumar
- Division of Biomaterial Sciences, Department of Zoology, Sree Neelakanta Government Sanskrit College Pattambi Palakkad Kerala India
| | - K Nikhila
- Division of Biomaterial Sciences, Department of Zoology, Sree Neelakanta Government Sanskrit College Pattambi Palakkad Kerala India
| | - Ovungal Sabira
- Division of Biomaterial Sciences, Department of Zoology, Sree Neelakanta Government Sanskrit College Pattambi Palakkad Kerala India
| | - Kodangattil Narayanan Jayaraj
- Basic Sciences Department, Centre for Medical and Bio-allied Health Sciences Research, Ajman University Ajman United Arab Emirates
| | - Sudhir Rama Varma
- Clinical Sciences Department, Centre for Medical and Bio-allied Health Sciences Research, Ajman University Ajman United Arab Emirates
| | - V A Rasheed
- Division of Biomaterial Sciences, Department of Zoology, Sree Neelakanta Government Sanskrit College Pattambi Palakkad Kerala India
| | - V S Binitha
- Department of Zoology, Sree Narayana College Nattika Thrissur Kerala India
| | - Kalapparambil Sreeja
- Department of Chemistry, Sree Neelakanta Government Sanskrit College Pattambi Palakkad Kerala India
| | - Resmi M Ramakrishnan
- Department of Chemistry, Sree Neelakanta Government Sanskrit College Pattambi Palakkad Kerala India
| | - Annet Babu
- Division of Biomaterial Sciences, Department of Zoology, Sree Neelakanta Government Sanskrit College Pattambi Palakkad Kerala India
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Ouedraogo LJ, Trznadel MJ, Kling M, Nasirian V, Borst AG, Shirsavar MA, Makowski A, McNamara MC, Montazami R, Hashemi NN. Hydrodynamic Assembly of Astrocyte Cells in Conductive Hollow Microfibers. Adv Biol (Weinh) 2024; 8:e2300455. [PMID: 37953458 DOI: 10.1002/adbi.202300455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/19/2023] [Indexed: 11/14/2023]
Abstract
The manufacturing of 3D cell scaffoldings provides advantages for modeling diseases and injuries as it enables the creation of physiologically relevant platforms. A triple-flow microfluidic device is developed to rapidly fabricate alginate/graphene hollow microfibers based on the gelation of alginate induced with CaCl2 . This five-channel microdevice actualizes continuous mild fabrication of hollow fibers under an optimized flow rate ratio of 300:200:100 µL min-1 . The polymer solution is 2.5% alginate in 0.1% graphene and a 30% polyethylene glycol solution is used as the sheath and core solutions. The biocompatibility of these conductive microfibers by encapsulating mouse astrocyte cells (C8D1A) within the scaffolds is investigated. The cells can successfully survive both the manufacturing process and prolonged encapsulation for up to 8 days, where there is between 18-53% of live cells on both the alginate microfibers and alginate/graphene microfibers. These unique 3D hollow scaffolds can significantly enhance the available surface area for nutrient transport to the cells. In addition, these conductive hollow scaffolds illustrate unique advantages such as 0.728 cm3 gr-1 porosity and two times more electrical conductivity in comparison to alginate scaffolds. The results confirm the potential of these scaffolds as a microenvironment that supports cell growth.
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Affiliation(s)
- Lionel J Ouedraogo
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Mychal J Trznadel
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
| | - McKayla Kling
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
- Neuroscience Graduate Program, Iowa State University, Ames, IA, 50011, USA
| | - Vahid Nasirian
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Alexandra G Borst
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
- Neuroscience Graduate Program, Iowa State University, Ames, IA, 50011, USA
| | | | - Andrew Makowski
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Marilyn C McNamara
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Reza Montazami
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Nicole N Hashemi
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
- Neuroscience Graduate Program, Iowa State University, Ames, IA, 50011, USA
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Alatzoglou C, Tzianni EI, Patila M, Trachioti MG, Prodromidis MI, Stamatis H. Structure-Function Studies of Glucose Oxidase in the Presence of Carbon Nanotubes and Bio-Graphene for the Development of Electrochemical Glucose Biosensors. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 14:85. [PMID: 38202540 PMCID: PMC10780548 DOI: 10.3390/nano14010085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 12/20/2023] [Accepted: 12/25/2023] [Indexed: 01/12/2024]
Abstract
In this work, we investigated the effect of multi-walled carbon nanotubes (MWCNTs) and bio-graphene (bG) on the structure and activity of glucose oxidase (GOx), as well as on the performance of the respective electrochemical glucose biosensors. Various spectroscopic techniques were applied to evaluate conformational changes in GOx molecules induced by the presence of MWCNTs and bG. The results showed that MWCNTs induced changes in the flavin adenine dinucleotide (FAD) prosthetic group of GOx, and the tryptophan residues were exposed to a more hydrophobic environment. Moreover, MWCNTs caused protein unfolding and conversion of α-helix to β-sheet structure, whereas bG did not affect the secondary and tertiary structure of GOx. The effect of the structural changes was mirrored by a decrease in the activity of GOx (7%) in the presence of MWCNTs, whereas the enzyme preserved its activity in the presence of bG. The beneficial properties of bG over MWCNTs on GOx activity were further supported by electrochemical data at two glucose biosensors based on GOx entrapped in chitosan gel in the presence of bG or MWCNTs. bG-based biosensors exhibited a 1.33-fold increased sensitivity and improved reproducibility for determining glucose over the sweat-relevant concentration range of glucose.
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Affiliation(s)
- Christina Alatzoglou
- Biotechnology Laboratory, Department of Biological Applications and Technologies, University of Ioannina, 45110 Ioannina, Greece; (C.A.); (M.P.)
| | - Eleni I. Tzianni
- Laboratory of Analytical Chemistry, University of Ioannina, 45110 Ioannina, Greece; (E.I.T.); (M.G.T.)
| | - Michaela Patila
- Biotechnology Laboratory, Department of Biological Applications and Technologies, University of Ioannina, 45110 Ioannina, Greece; (C.A.); (M.P.)
| | - Maria G. Trachioti
- Laboratory of Analytical Chemistry, University of Ioannina, 45110 Ioannina, Greece; (E.I.T.); (M.G.T.)
| | - Mamas I. Prodromidis
- Laboratory of Analytical Chemistry, University of Ioannina, 45110 Ioannina, Greece; (E.I.T.); (M.G.T.)
| | - Haralambos Stamatis
- Biotechnology Laboratory, Department of Biological Applications and Technologies, University of Ioannina, 45110 Ioannina, Greece; (C.A.); (M.P.)
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Zare AA, Naderi-Manesh H, Naghib SM, Shamsipur M, Molaabasi F. Label-free electrochemical cancer cell detection leveraging hemoglobin-encapsulated silver nanoclusters and Cu-MOF nanohybrids on a graphene-assisted dual-modal probe. Sci Rep 2023; 13:21980. [PMID: 38082024 PMCID: PMC10713537 DOI: 10.1038/s41598-023-49418-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 12/07/2023] [Indexed: 12/18/2023] Open
Abstract
Breast cancer detection at an early stage significantly increases the chances of successful treatment and survival. This study presents an electrochemical biosensor for detecting breast cancer cells, utilizing silver nanoclusters encapsulated by hemoglobin and Cu (II)-porphyrin-metal organic framework (BioMOF) in a graphene-incorporated nanohybrid probe. This Hb-AgNCs@MOF-G probe demonstrates high electrochemical activity, superior dispersity, porosity, and a large surface area for effective functionalization. Using a green ultrasonic-assisted stirring method, we fabricate ultra-small 5 nm particles that readily immobilize on a glassy carbon electrode, generating a detection signal when interacting with ferricyanide/ferrocyanide redox probes. The resulting immunosensor detects as few as 2 cells/mL using Electrochemical Impedance Spectroscopy (EIS) "signal on" and 16 cells/mL via Square Wave Voltammetry (SWV) "signal off", within a broad range of cell concentrations (102-5 × 104 cells/mL). Our designed sensor shows improved selectivity (5- to 16-fold) and robust detection in human blood with a recovery efficiency between 94.8-106% (EIS method) and 95.4-111% (SWV method). This sensor could streamline early cancer diagnosis and monitor patient treatment without requiring labelling or signal amplification. As a pioneering endeavor, we've utilized integrated porous MOFs with Hb-encapsulated silver nanoclusters in cancer detection, where these components collectively enhance the overall functionality.
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Affiliation(s)
- Ali-Akbar Zare
- Department of Nanobiotechnology, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Hossein Naderi-Manesh
- Department of Nanobiotechnology, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran.
- Department of Biophysics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran.
| | - Seyed Morteza Naghib
- Nanotechnology Department, School of Advanced Technologies, Iran University of Science and Technology (IUST), Tehran, Iran
| | | | - Fatemeh Molaabasi
- Biomaterials and Tissue Engineering Research Group, Department of Interdisciplinary Technologies, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran.
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Mashreghi M, Sabeti B, Chekin F. Magnetite graphene oxide-albumin conjugate: carrier for the imatinib anticancer drug. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2023; 34:32. [PMID: 37450082 PMCID: PMC10348929 DOI: 10.1007/s10856-023-06735-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 06/19/2023] [Indexed: 07/18/2023]
Abstract
Carbon nanomaterials are widely used in biomedical applications due to their versatile properties. These are the attractive candidates for the carrying of anticancer drugs, genes, and proteins for chemotherapy. Imatinib is an effective chemotherapy drug whose toxicity has created a significant limitation in treatment. In this research, a new biocompatible nanocarrier based on albumin-magnetite graphene oxide conjugates was reported for the loading and release of imatinib. The magnetite graphene oxide nanocomposite was investigated by ultra violet-visible spectroscopy (UV-Vis), field emission scanning electron microscope (FE-SEM), X-ray diffraction spectroscopy (XRD) and energy diepersive X-ray spectroscopy (EDX) methods. The crystallite size of Fe3O4 nanoparticles on graphene oxide obtained from XRD is about 14 nm which is in agreement well with the SEM results. We show that magnetite graphene oxide conjugated with albumin is an extremely efficient carrier. An efficient loading of IM, 81% at pH 7.0, time 2 h and initial concentration of 1 mg/mL was seen onto magnetite graphene oxide-albumin in comparison to graphene oxide and magnetite graphene oxide due to the presence of oxygen and nitrogen functional groups of albumin. Upon the pH 9.0 and 7.0, 7% and 16% imatinib could be released from the magnetite graphene oxide-albumin in a time span of 5 h but when exposed pH 4.0 the corresponding 31% was released in 5 h. After 20 h, 21, 42 and 68% of imatinib was released at pH 9.0, 7.0 and 4.0, respectively. This illustrates the major benefits of the developed approach for biomedical applications.
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Affiliation(s)
- Maral Mashreghi
- Department of Pharmacy, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
| | - Bahare Sabeti
- Department of Pharmacy, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
| | - Fereshteh Chekin
- Department of Chemistry, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran.
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Papanikolaou E, Simos YV, Spyrou K, Patila M, Alatzoglou C, Tsamis K, Vezyraki P, Stamatis H, Gournis DP, Peschos D, Dounousi E. Does Green Exfoliation of Graphene Produce More Biocompatible Structures? Pharmaceutics 2023; 15:pharmaceutics15030993. [PMID: 36986854 PMCID: PMC10051938 DOI: 10.3390/pharmaceutics15030993] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/10/2023] [Accepted: 03/16/2023] [Indexed: 03/30/2023] Open
Abstract
Graphene has been studied thoroughly for its use in biomedical applications over the last decades. A crucial factor for a material to be used in such applications is its biocompatibility. Various factors affect the biocompatibility and toxicity of graphene structures, including lateral size, number of layers, surface functionalization, and way of production. In this work, we tested that the green production of few-layer bio-graphene (bG) enhances its biocompatibility compared to chemical-graphene (cG). When tested against three different cell lines in terms of MTT assays, both materials proved to be well-tolerated at a wide range of doses. However, high doses of cG induce long-term toxicity and have a tendency for apoptosis. Neither bG nor cG induced ROS generation or cell cycle modifications. Finally, both materials affect the expression of inflammatory proteins such as Nrf2, NF-kB and HO-1 but further research is required for a safe result. In conclusion, although there is little to choose between bG and cG, bG's sustainable way of production makes it a much more attractive and promising candidate for biomedical applications.
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Affiliation(s)
- Eirini Papanikolaou
- Department of Physiology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
- Nanomedicine and Nanobiotechnology Research Group, University of Ioannina, 45110 Ioannina, Greece
- Department of Nephrology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
| | - Yannis V Simos
- Department of Physiology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
- Nanomedicine and Nanobiotechnology Research Group, University of Ioannina, 45110 Ioannina, Greece
| | - Konstantinos Spyrou
- Nanomedicine and Nanobiotechnology Research Group, University of Ioannina, 45110 Ioannina, Greece
- Department of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, Greece
| | - Michaela Patila
- Nanomedicine and Nanobiotechnology Research Group, University of Ioannina, 45110 Ioannina, Greece
- Biotechnology Laboratory, Department of Biological Applications and Technologies, University of Ioannina, 45110 Ioannina, Greece
| | - Christina Alatzoglou
- Biotechnology Laboratory, Department of Biological Applications and Technologies, University of Ioannina, 45110 Ioannina, Greece
| | - Konstantinos Tsamis
- Department of Physiology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
- Nanomedicine and Nanobiotechnology Research Group, University of Ioannina, 45110 Ioannina, Greece
| | - Patra Vezyraki
- Department of Physiology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
| | - Haralambos Stamatis
- Nanomedicine and Nanobiotechnology Research Group, University of Ioannina, 45110 Ioannina, Greece
- Biotechnology Laboratory, Department of Biological Applications and Technologies, University of Ioannina, 45110 Ioannina, Greece
| | - Dimitrios P Gournis
- Nanomedicine and Nanobiotechnology Research Group, University of Ioannina, 45110 Ioannina, Greece
- Department of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, Greece
| | - Dimitrios Peschos
- Department of Physiology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
- Nanomedicine and Nanobiotechnology Research Group, University of Ioannina, 45110 Ioannina, Greece
| | - Evangelia Dounousi
- Nanomedicine and Nanobiotechnology Research Group, University of Ioannina, 45110 Ioannina, Greece
- Department of Nephrology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
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Adenine derived reactive dispersant and the enhancement of graphene based composites. J Colloid Interface Sci 2023; 640:91-99. [PMID: 36842421 DOI: 10.1016/j.jcis.2023.02.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/11/2023] [Accepted: 02/12/2023] [Indexed: 02/17/2023]
Abstract
HYPOTHESIS Homogeneous dispersion of graphene is the precondition for constructing high performance graphene based composites. However, most of the current dispersants reported in literature still suffer excess usage to reach a desired graphene concentration. Residual of dispersant in composite may seriously affect its properties. Hence, it is expected to obtain effective dispersant with high reactivity to diminish its adverse impacts on graphene composites. EXPERIMENTS A highly reactive graphene dispersant (DSiA) was synthesized by grafting silanol groups (Si-OH) onto adenine. Molecular structure and the performance of the dispersant were systematically characterized. Composites were fabricated by direct writing of the graphene dispersion on various substrates, and their features were evaluated by resistance, solvent erosion and tensile testing. FINDINGS Graphene concentration can reach up to 6 mg mL-1 in the presents of DSiA at the weight ratio of 1:1 (DSiA: graphene). DSiA also exhibited good performance for stabilizing multi-walled carbon nanotubes (MWCNTs). Moreover, the dispersant is highly reactive. The graphene based composites showed good mechanical strength and excellent solvent resistance. Overall, the new dispersant provides an ideal choice to uniformly disperse graphene and suitable for fabricating high performance nanocarbon based composites.
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Li J, Lyu Y, Li C, Zhang F, Li K, Li X, Li J, Kim KH. Development of strong, tough and flame-retardant phenolic resins by using Acacia mangium tannin-functionalized graphene nanoplatelets. Int J Biol Macromol 2023; 227:1191-1202. [PMID: 36462593 DOI: 10.1016/j.ijbiomac.2022.11.305] [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] [Received: 09/14/2022] [Revised: 11/28/2022] [Accepted: 11/29/2022] [Indexed: 12/03/2022]
Abstract
Constructing an eco-friendly phenolic resin with high toughness, strength, and flame retardancy is of great significance and challengeable in the wood-based panels industry. Acacia mangium tannin (AMT), as a biological macromolecule, was decorated onto graphene through ball milling. The formed AMT-functionalized graphene nanoplatelets (AMT@GnPs) were used to replace 40 % phenol to greenly modify and reinforce phenolic resins. The fabricated phenolic resin (BGTPF) exhibited high wet bonding strength of 1.58 MPa, high tensile strength of 24.4 MPa, and large toughness of 0.35 MJ m-3, which were 38.6 %, 27.7 %, and 75.0 % increments compared with the 1.14 MPa, 19.1 MPa and 0.20 MJ m-3 of the neat AMT-modified phenolic resin (TPF). These improvements were attributable to the good compatibility and strong interfacial interactions between AMT@GnPs and the resin matrix, which promoted the transfer and dissipation of load energy. The prepared BGTPF resin showed good flame retardancy and high thermal stability. The peak HRR decreased from 15.5 for TPF to 6.9 W/g for BGTPF. This work presents a new, low-cost, and sustainable strategy to construct mechanically strong, tough, and flame-retardant tannin-based phenolic resins for many promising applications such as engineered wood-based products.
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Affiliation(s)
- Jiongjiong Li
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Longpan Road 159, Xuanwu District, Nanjing 210037, China
| | - Yan Lyu
- Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Jiangsu Province Key Laboratory of Biomass Energy and Materials, Nanjing 210042, China
| | - Cheng Li
- College of Forestry, Henan Agricultural University, Zhengzhou 450000, China
| | - Fudong Zhang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Longpan Road 159, Xuanwu District, Nanjing 210037, China
| | - Kuang Li
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Longpan Road 159, Xuanwu District, Nanjing 210037, China
| | - Xiaona Li
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Longpan Road 159, Xuanwu District, Nanjing 210037, China
| | - Jianzhang Li
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Longpan Road 159, Xuanwu District, Nanjing 210037, China; Key Laboratory of Wood Materials Science and Application (Beijing Forestry University), Ministry of Education, Beijing 100083, China.
| | - Ki-Hyun Kim
- Department of Civil & Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
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Alatzoglou C, Patila M, Giannakopoulou A, Spyrou K, Yan F, Li W, Chalmpes N, Polydera AC, Rudolf P, Gournis D, Stamatis H. Development of a Multi-Enzymatic Biocatalytic System through Immobilization on High Quality Few-Layer bio-Graphene. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 13:nano13010127. [PMID: 36616038 PMCID: PMC9824680 DOI: 10.3390/nano13010127] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 12/23/2022] [Accepted: 12/25/2022] [Indexed: 06/02/2023]
Abstract
In this work, we report the green production of few-layer bio-Graphene (bG) through liquid exfoliation of graphite in the presence of bovine serum albumin. Microscopic characterization evaluated the quality of the produced nanomaterial, showing the presence of 3-4-layer graphene. Moreover, spectroscopic techniques also confirmed the quality of the resulted bG, as well as the presence of bovine serum albumin on the graphene sheets. Next, for the first time, bG was used as support for the simultaneous covalent co-immobilization of three enzymes, namely β-glucosidase, glucose oxidase, and horseradish peroxidase. The three enzymes were efficiently co-immobilized on bG, demonstrating high immobilization yields and activity recoveries (up to 98.5 and 90%, respectively). Co-immobilization on bG led to an increase of apparent KM values and a decrease of apparent Vmax values, while the stability of the nanobiocatalysts prevailed compared to the free forms of the enzymes. Co-immobilized enzymes exhibited high reusability, preserving a significant part of their activity (up to 72%) after four successive catalytic cycles at 30 °C. Finally, the tri-enzymatic nanobiocatalytic system was applied in three-step cascade reactions, involving, as the first step, the hydrolysis of p-Nitrophenyl-β-D-Glucopyranoside and cellobiose.
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Affiliation(s)
- Christina Alatzoglou
- Laboratory of Biotechnology, Department of Biological Applications and Technology, University of Ioannina, 45110 Ioannina, Greece
| | - Michaela Patila
- Laboratory of Biotechnology, Department of Biological Applications and Technology, University of Ioannina, 45110 Ioannina, Greece
| | - Archontoula Giannakopoulou
- Laboratory of Biotechnology, Department of Biological Applications and Technology, University of Ioannina, 45110 Ioannina, Greece
| | - Konstantinos Spyrou
- Department of Materials Science & Engineering, University of Ioannina, 45110 Ioannina, Greece
| | - Feng Yan
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Wenjian Li
- Engineering and Technology Institute Groningen, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Nikolaos Chalmpes
- Department of Materials Science & Engineering, University of Ioannina, 45110 Ioannina, Greece
| | - Angeliki C. Polydera
- Laboratory of Biotechnology, Department of Biological Applications and Technology, University of Ioannina, 45110 Ioannina, Greece
| | - Petra Rudolf
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Dimitrios Gournis
- Department of Materials Science & Engineering, University of Ioannina, 45110 Ioannina, Greece
| | - Haralambos Stamatis
- Laboratory of Biotechnology, Department of Biological Applications and Technology, University of Ioannina, 45110 Ioannina, Greece
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Abbasi Shirsavar M, Taghavimehr M, Ouedraogo LJ, Javaheripi M, Hashemi NN, Koushanfar F, Montazami R. Machine learning-assisted E-jet printing for manufacturing of organic flexible electronics. Biosens Bioelectron 2022; 212:114418. [DOI: 10.1016/j.bios.2022.114418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 05/17/2022] [Accepted: 05/19/2022] [Indexed: 11/02/2022]
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11
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Minute-sensitive real-time monitoring of neural cells through printed graphene microelectrodes. Biosens Bioelectron 2022; 210:114284. [DOI: 10.1016/j.bios.2022.114284] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 04/05/2022] [Accepted: 04/10/2022] [Indexed: 12/11/2022]
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12
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Bovine serum albumin-functionalized graphene-decorated strontium as a potent complex nanoparticle for bone tissue engineering. Sci Rep 2022; 12:12336. [PMID: 35853926 PMCID: PMC9296456 DOI: 10.1038/s41598-022-16568-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 07/12/2022] [Indexed: 12/04/2022] Open
Abstract
Graphene and its family have a great potential in tissue engineering because of their super mechanical properties, electrical conductivity and antibacterial properties. Considering other properties of graphene such as high surface area and ready-to-use functionalization according to the high oxygen-containing groups in graphene oxide family, some needs could be addressed in bone tissue engineering. Herein, we synthesized and decorated strontium nanoparticles (SrNPs) during the reduction process of graphene oxide using green and novel method. Without using hydrazine or chemical linkers, strontium NPs were synthesized and decorated on the surface of rGO simultaneously using BSA. The results of the UV–Vis, FTIR and Raman spectroscopy demonstrated that BSA could successfully reduce graphene oxide and decorated SrNPs on the surface of rGO. FESEM and TEM exhibited that in situ synthesized SrNPs had 25–30 nm diameter. Interestingly, cell viability for MC3T3-E1 cells treated with SrNPs-rGO, were significantly higher than BSA-rGO and GO in constant concentration. Furthermore, we investigated the alkaline phosphatase activity (ALP) of these nanosheets that the results demonstrated Sr-BSA-rGO enhanced ALP activity more than GO and BSA-rGO. Remarkably, the relative expression of RUNX 2 and Col1 genes of MC3T3-E1 cells was boosted when treated with Sr-BSA-rGO nanosheets. This study revealed that using proteins and other biomolecules as green and facile agent for decoration of smart nanoparticles on the surface of nanosheets, would be promising and assist researcher to replace the harsh and toxic hydrazine like materials with bio-friendly method. These results demonstrated that Sr-BSA-rGO had the excellent capability for regenerating bone tissue and could be used as an osteogenesis booster in implants.
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14
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Omran B, Baek KH. Graphene-derived antibacterial nanocomposites for water disinfection: Current and future perspectives. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 298:118836. [PMID: 35032599 DOI: 10.1016/j.envpol.2022.118836] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/29/2021] [Accepted: 01/08/2022] [Indexed: 05/11/2023]
Abstract
Antimicrobial nanomaterials provide numerous opportunities for the synthesis of next-generation sustainable water disinfectants. Using the keywords graphene and water disinfection and graphene antibacterial activity, a detailed search of the Scopus database yielded 198 and 1433 studies on using graphene for water disinfection applications and graphene antibacterial activity in the last ten years, respectively. Graphene family nanomaterials (GFNs) have emerged as effective antibacterial agents. The current innovations in graphene-, graphene oxide (GO)-, reduced graphene oxide (rGO)-, and graphene quantum dot (GQD)-based nanocomposites for water disinfection, including their functionalization with semiconductor photocatalysts and metal and metal oxide nanoparticles, have been thoroughly discussed in this review. Furthermore, their novel application in the fabrication of 3D porous hydrogels, thin films, and membranes has been emphasized. The physicochemical and structural properties affecting their antibacterial efficiency, such as sheet size, layer number, shape, edges, smoothness/roughness, arrangement mode, aggregation, dispersibility, and surface functionalization have been highlighted. The various mechanisms involved in GFN antibacterial action have been reviewed, including the mechanisms of membrane stress, ROS-dependent and -independent oxidative stress, cell wrapping/trapping, charge transfer, and interaction with cellular components. For safe applications, the potential biosafety and biocompatibility of GFNs in aquatic environments are emphasized. Finally, the current limitations and future perspectives are discussed. This review may provide ideas for developing efficient and practical solutions using graphene-, GO-, rGO-, and GQD-based nanocomposites in water disinfection by rationally employing their unique properties.
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Affiliation(s)
- Basma Omran
- Department of Biotechnology, Yeungnam University, Gyeongbuk, Gyeongsan, 38541, Republic of Korea; Department of Processes Design & Development, Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo PO, 11727, Egypt
| | - Kwang-Hyun Baek
- Department of Biotechnology, Yeungnam University, Gyeongbuk, Gyeongsan, 38541, Republic of Korea.
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Seifi T, Kamali AR. The influence of mechanochemical treatment in hexane on dispersibility and floatability of graphite flakes with enhanced water evaporation performance. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128326] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Niaraki A, McNamara MC, Montazami R, Hashemi NN. Graphene Microelectrodes for Real-Time Impedance Spectroscopy of Neural Cells. ACS APPLIED BIO MATERIALS 2022; 5:113-122. [PMID: 35014836 DOI: 10.1021/acsabm.1c00913] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Understanding the changes in the electrochemical properties of neural cells upon exposure to stress factors imparts vital information about the conditions prior to their death. This study presents a graphene-based biosensor for real-time monitoring of N27 rat dopaminergic neural cells which characterizes cell adhesion and cytotoxicity factors through impedance spectroscopy. The aim was to monitor the growth of the entire cell network via a nonmetallic flexible electrode array. Therefore, a water-based graphene solution was formulized as a conductive ink, 3D-printed into a flexible substrate through an electrohydrodynamic approach, resulting in electrodes with a conductivity of 6750 s/m. The presented high-throughput method enabled microscale monitoring of the entire cell network via the design of PDMS-based growth channels. The electrical resistance of the cell network was measured continuously along with their network density, constituting a mean density of 1890 cell/mm2 at full cell confluency. The results demonstrate the applicability of the impedance-based sensing of the cell network for rapid screening of the cytotoxic elements, and the real-time effect of UV exposure on dopaminergic neural cells was reported as an immediate application of the device.
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Affiliation(s)
- Amir Niaraki
- Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Marilyn C McNamara
- Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Reza Montazami
- Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Nicole N Hashemi
- Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States.,Department of Mechanical Engineering, Stanford University, Stanford, California 94305, United States
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McNamara MC, Aykar SS, Alimoradi N, Niaraki Asli AE, Pemathilaka RL, Wrede AH, Montazami R, Hashemi NN. Behavior of Neural Cells Post Manufacturing and After Prolonged Encapsulation within Conductive Graphene-Laden Alginate Microfibers. Adv Biol (Weinh) 2021; 5:e2101026. [PMID: 34626101 DOI: 10.1002/adbi.202101026] [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: 06/11/2021] [Revised: 09/17/2021] [Indexed: 12/14/2022]
Abstract
Engineering conductive 3D cell scaffoldings offer advantages toward the creation of physiologically relevant platforms with integrated real-time sensing capabilities. Dopaminergic neural cells are encapsulated into graphene-laden alginate microfibers using a microfluidic approach, which is unmatched for creating highly-tunable microfibers. Incorporating graphene increases the conductivity of the alginate microfibers by 148%, creating a similar conductivity to native brain tissue. The cell encapsulation procedure has an efficiency of 50%, and of those cells, ≈30% remain for the entire 6-day observation period. To understand how the microfluidic encapsulation affects cell genetics, tyrosine hydroxylase, tubulin beta 3 class 3, interleukin 1 beta, and tumor necrosis factor alfa are analyzed primarily with real-time reverse transcription-quantitative polymerase chain reaction and secondarily with enzyme-linked immunosorbent assay, immediately after manufacturing, after encapsulation in polymer matrix for 6 days, and after encapsulation in the graphene-polymer composite for 6 days. Preliminary data shows that the manufacturing process and combination with alginate matrix affect the expression of the studied genes immediately after manufacturing. In addition, the introduction of graphene further changes gene expressions. Long-term encapsulation of neural cells in alginate and 6-day exposure to graphene also leads to changes in gene expressions.
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Affiliation(s)
- Marilyn C McNamara
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Saurabh S Aykar
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Nima Alimoradi
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
| | | | | | - Alex H Wrede
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Reza Montazami
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Nicole N Hashemi
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA.,Department of Mechanical Engineering, Stanford University, Stanford, CA, 94305, USA
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Sakr MA, Sakthivel K, Hossain T, Shin SR, Siddiqua S, Kim J, Kim K. Recent trends in gelatin methacryloyl nanocomposite hydrogels for tissue engineering. J Biomed Mater Res A 2021; 110:708-724. [PMID: 34558808 DOI: 10.1002/jbm.a.37310] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 07/21/2021] [Accepted: 09/01/2021] [Indexed: 12/17/2022]
Abstract
Gelatin methacryloyl (GelMA), a photocrosslinkable gelatin-based hydrogel, has been immensely used for diverse applications in tissue engineering and drug delivery. Apart from its excellent functionality and versatile mechanical properties, it is also suitable for a wide range of fabrication methodologies to generate tissue constructs of desired shapes and sizes. Despite its exceptional characteristics, it is predominantly limited by its weak mechanical strength, as some tissue types naturally possess high mechanical stiffness. The use of high GelMA concentrations yields high mechanical strength, but not without the compromise in its porosity, degradability, and three-dimensional (3D) cell attachment. Recently, GelMA has been blended with various natural and synthetic biomaterials to reinforce its physical properties to match with the tissue to be engineered. Among these, nanomaterials have been extensively used to form a composite with GelMA, as they increase its biological and physicochemical properties without affecting the unique characteristics of GelMA and also introduce electrical and magnetic properties. This review article presents the recent advances in the formation of hybrid GelMA nanocomposites using a variety of nanomaterials (carbon, metal, polymer, and mineral-based). We give an overview of each nanomaterial's characteristics followed by a discussion of the enhancement in GelMA's physical properties after its incorporation. Finally, we also highlight the use of each GelMA nanocomposite for different applications, such as cardiac, bone, and neural regeneration.
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Affiliation(s)
- Mahmoud A Sakr
- School of Engineering, The University of British Columbia, Kelowna, British Columbia, Canada
| | - Kabilan Sakthivel
- School of Engineering, The University of British Columbia, Kelowna, British Columbia, Canada
| | - Towsif Hossain
- School of Engineering, The University of British Columbia, Kelowna, British Columbia, Canada
| | - Su Ryon Shin
- Division of Engineering in Medicine, Department of Medicine, Harvard Medical School, Brigham Women's Hospital, Cambridge, Massachusetts, USA
| | - Sumi Siddiqua
- School of Engineering, The University of British Columbia, Kelowna, British Columbia, Canada
| | - Jaehwan Kim
- Advanced Geo-materials Research Department, Korea Institute of Geosciece and Mineral Resources, Pohang-si, South Korea
| | - Keekyoung Kim
- Department of Mechanical and Manufacturing Engineering, Schulich School of Engineering, University of Calgary, Calgary, Alberta, Canada.,Biomedical Engineering Graduate Program, Schulich School of Engineering, University of Calgary, Calgary, Alberta, Canada
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Gooneh-Farahani S, Naghib SM, Naimi-Jamal MR, Seyfoori A. A pH-sensitive nanocarrier based on BSA-stabilized graphene-chitosan nanocomposite for sustained and prolonged release of anticancer agents. Sci Rep 2021; 11:17404. [PMID: 34465842 PMCID: PMC8408197 DOI: 10.1038/s41598-021-97081-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Accepted: 08/11/2021] [Indexed: 02/02/2023] Open
Abstract
Smart nanomaterials with stimuli-responsive behavior are considered as promising platform for various drug delivery applications. Regarding their specific conditions, such as acidic pH, drug carriers to treatment of tumor microenvironment need some criteria to enhance drug delivery efficiency. In this study, for the first time, pH-sensitive BSA-stabilized graphene (BSG)/chitosan nanocomposites were synthesized through electrostatic interactions between the positively charged chitosan nanoparticles and negatively charged BSG and used for Doxorubicin (DOX) encapsulation as a general anticancer drug. Physicochemical characterization of the nanocomposites with different concentrations of BSG (0.5, 2, and 5wt%) showed effective decoration of chitosan nanoparticles on BSG. Comparing DOX release behavior from the nanocomposites and free BSG-chitosan nanoparticles were evaluated at two pHs of 7.4 and 4.5 in 28 days. It was shown that the presence of BSG significantly reduced the burst release observed in chitosan nanoparticles. The nanocomposite of 2wt% BSG was selected as the optimal nanocomposite with a release of 84% in 28 days and with the most uniform release in 24 h. Furthermore, the fitting of release data with four models including zero-order, first-order, Higuchi, and Korsmeyer-Peppas indicated that the addition of BSG changed the release mechanism of the drug, enabling uniform release for the optimal nanocomposite in first 24 h, compared to that for pure chitosan nanoparticles. This behavior was proved using metabolic activity assay of the SKBR-3 breast cancer cell spheroids exposed to DOX release supernatant at different time intervals. It was also demonstrated that DOX released from the nanocomposite had a significant effect on the suppression of cancer cell proliferation at acidic pH.
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Affiliation(s)
- Sahar Gooneh-Farahani
- Research Laboratory of Green Organic Synthesis and Polymers, Chemistry Department, Iran University of Science and Technology (IUST), Tehran, Iran
| | - Seyed Morteza Naghib
- Nanotechnology Department, School of New Technologies, Iran University of Science and Technology (IUST), Tehran, Iran.
| | - M Reza Naimi-Jamal
- Research Laboratory of Green Organic Synthesis and Polymers, Chemistry Department, Iran University of Science and Technology (IUST), Tehran, Iran
| | - Amir Seyfoori
- Biomaterials and Tissue Engineering Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran.
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Wazalwar R, Sahu M, Raichur AM. Mechanical properties of aerospace epoxy composites reinforced with 2D nano-fillers: current status and road to industrialization. NANOSCALE ADVANCES 2021; 3:2741-2776. [PMID: 36134191 PMCID: PMC9417658 DOI: 10.1039/d1na00050k] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 03/24/2021] [Indexed: 05/05/2023]
Abstract
High-performance epoxy composites find application in the aerospace industry. Although epoxy is a high-performance polymer, its fracture toughness is compromised due to its highly cross-linked nature. Nanomaterials such as carbon nanotubes (CNTs), graphene derivatives, and inorganic 2-dimensional (2D) nanomaterials are being explored to improve epoxy composites' mechanical properties. Graphene is one of the most popular 2D nano-reinforcing agents for epoxy composites. Following graphene discovery, the research community's attention was brought to various other few-atom thick 2D nanomaterials. Hence, apart from graphene, inorganic nanosheets such as transition metal dichalcogenides (TMDs), hexagonal boron nitride (hBN), etc., are also being studied as modifiers for enhancing the mechanical performance of epoxy composites. Graphene, TMDs and hBN are known to possess a high aspect ratio, high specific surface area and inherently high mechanical strength and stiffness, contributing to a stronger and tougher composite. Despite that, the challenges associated with these nanomaterials, such as dispersion issues, lack of standardization, underlying health hazards, etc., have hampered their commercialization. It has been long past a decade since the discovery of graphene, yet there are concerns regarding the lab to industry scale-up, and health and environmental hazards associated with nanomaterials for the fabrication of aerospace composites. This review offers a comprehensive literature survey and a perspective into the possible ways of bridging the gaps between the laboratory research and industrialization of 2D nanosheet-filled epoxy composites.
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Affiliation(s)
- Radhika Wazalwar
- Department of Materials Engineering, Indian Institute of Science Bengaluru India +91-80-22933238
| | - Megha Sahu
- Department of Materials Engineering, Indian Institute of Science Bengaluru India +91-80-22933238
| | - Ashok M Raichur
- Department of Materials Engineering, Indian Institute of Science Bengaluru India +91-80-22933238
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21
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Thomas DG, De-Alwis S, Gupta S, Pecharsky VK, Mendivelso-Perez D, Montazami R, Smith EA, Hashemi NN. Protein-assisted scalable mechanochemical exfoliation of few-layer biocompatible graphene nanosheets. ROYAL SOCIETY OPEN SCIENCE 2021; 8:200911. [PMID: 34035934 PMCID: PMC8101280 DOI: 10.1098/rsos.200911] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 03/01/2021] [Indexed: 05/04/2023]
Abstract
A facile method to produce few-layer graphene (FLG) nanosheets is developed using protein-assisted mechanical exfoliation. The predominant shear forces that are generated in a planetary ball mill facilitate the exfoliation of graphene layers from graphite flakes. The process employs a commonly known protein, bovine serum albumin (BSA), which not only acts as an effective exfoliation agent but also provides stability by preventing restacking of the graphene layers. The latter is demonstrated by the excellent long-term dispersibility of exfoliated graphene in an aqueous BSA solution, which exemplifies a common biological medium. The development of such potentially scalable and toxin-free methods is critical for producing cost-effective biocompatible graphene, enabling numerous possible biomedical and biological applications. A methodical study was performed to identify the effect of time and varying concentrations of BSA towards graphene exfoliation. The fabricated product has been characterized using Raman spectroscopy, powder X-ray diffraction, transmission electron microscopy and scanning electron microscopy. The BSA-FLG dispersion was then placed in media containing Astrocyte cells to check for cytotoxicity. It was found that lower concentrations of BSA-FLG dispersion had only minute cytotoxic effects on the Astrocyte cells.
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Affiliation(s)
- Deepak-George Thomas
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011-2030, USA
| | - Steven De-Alwis
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011-2030, USA
| | - Shalabh Gupta
- The Ames Laboratory, US Department of Energy, Ames, IA 50011-3020, USA
| | - Vitalij K. Pecharsky
- The Ames Laboratory, US Department of Energy, Ames, IA 50011-3020, USA
- Department of Material Science and Engineering, Iowa State University, Ames, IA, 50011-1096, USA
| | - Deyny Mendivelso-Perez
- The Ames Laboratory, US Department of Energy, Ames, IA 50011-3020, USA
- Department of Chemistry, Iowa State University, Ames, IA, 50011-1021, USA
| | - Reza Montazami
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011-2030, USA
| | - Emily A. Smith
- The Ames Laboratory, US Department of Energy, Ames, IA 50011-3020, USA
- Department of Chemistry, Iowa State University, Ames, IA, 50011-1021, USA
| | - Nicole N. Hashemi
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011-2030, USA
- Department of Biomedical Sciences, Iowa State University, Ames, IA 50011, USA
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22
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Singh AK, Yadav AN, Srivastav S, Jaiswal RK, Srivastava A, Mondal AC, Singh K. CdSe- Reduced graphene oxide nanocomposite toxicity alleviation via V 2O 5 shell formation over CdSe core: in vivo and in vitro studies. NANOTECHNOLOGY 2020; 31:415101. [PMID: 32311687 DOI: 10.1088/1361-6528/ab8b0f] [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
The present article demonstrates the synthesis of the nanocomposite of reduced graphene oxide (rGO) with CdSe and CdSe/V2O5 core/shell quantum dots by a two-step facile synthesis approach and subsequently studies their relative biocompatibility in different cells. Various characterization techniques have been applied including transmission electron microscopy (TEM), an x-ray diffractometer (XRD) and Raman spectroscopy to confirm the successful formation of CdSe-rGO and CdSe/V2O5-rGO nanocomposites. The average sizes of CdSe and CdSe/V2O5 QDs have found to be ∼3 and 5.5 nm, respectively with a good dispersion over the surface of rGO nanosheets. A crystal phase change has occurred during the formation of the V2O5 shell over the surface of CdSe QDs and confirmed through XRD. Raman spectroscopy has shown some useful insight of the surface state of CdSe and consequent changes in the surface with V2O5 shell growth. Further, MTT and cell growth assays have been performed to analyze their biocompatibility in A549 and Hela cells with various concentrations of as-synthesized materials. Our results demonstrate the toxicity of CdSe-rGO nanocomposite to be substantially reduced by the growth of the V2O5 shell. The in vivo studies in Drosophila show a remarkable decrease in the reactive oxygen species (ROS) and apoptosis levels for a CdSe/V2O5-rGO composite as compared to a CdSe-rGO nanocomposite, which paves a promising pathway for the CdSe/V2O5-rGO nanocomposite to be used as an efficient biocompatible material.
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Affiliation(s)
- Ashwani Kumar Singh
- Center for Semiconductor and Nanotechnology Components, State University of Campinas, UNICAMP, Sao Paulo, Brazil. School of Physical Sciences, Jawaharlal Nehru University, New Delhi, India
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23
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A dense graphene monolith with poloxamer prefunctionalization enabling aqueous redispersion to obtain solubilized graphene sheets. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.01.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Dual-modal label-free genosensor based on hemoglobin@gold nanocluster stabilized graphene nanosheets for the electrochemical detection of BCR/ABL fusion gene. Talanta 2020; 217:121093. [PMID: 32498906 DOI: 10.1016/j.talanta.2020.121093] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/23/2020] [Accepted: 04/25/2020] [Indexed: 12/11/2022]
Abstract
For the first time, we have successfully synthesized stable graphene nanosheets from graphite powder through sonication in the hemoglobin-capped gold nanoclusters (Hb@AuNCs) solution for biosensing application. This approach, as a simple method for the exfoliation and fragmentation of graphite in a nanocluster solution, enabled us to produce stable aqueous graphene dispersions at low cost and without the need for hazardous chemicals or tedious experimental procedures. In this method, Hb@AuNCs were used not only as stabilizing agent of graphene through non-covalent bonding, but also as dispersing agent of few-layer graphene nanosheets. The Hb@AuNCs stabilized graphene (Hb@AuNCs-G) was characterized by high resolution transmission electron microscopy (HRTEM), zeta-sizer and Raman spectroscopy. Then, the graphene nanosheets were applied as a novel versatile electrochemical platform for ultrasensitive biosensing of short DNA species of chronic myelogenous leukemia (CML) based on the "signal off" and "signal on" strategies. For this purpose, a single strand DNA (ssDNA) was immobilized on the Hb@AuNCs-G/AuNPs modified electrode surface and acted as the biorecognition element. Methylene blue (MB), as the signaling probe, was then intercalated into the ssDNA. The intercalated MB was liberated upon interaction with the synthetic complementary DNA (cDNA, target), thereby resulting in the apparent reduction of MB redox signal. This designed "signal off" sensing system enabled the voltammetric determination of the target cDNA over a dynamic linear range (DLR) of 0.1 fM to 10 pM with a limit of detection (LOD) of 0.037 fM. In the "signal on" strategy, the response to the cDNA was detected by monitoring the change in the electron transfer resistance (Rct) using the ferro/ferricyanide system as a redox probe. The charge transfer resistance of the probe was found to increase linearly with increasing concentration of target cDNA in the range of 0.1 fM-10 pM with a limit of detection of 0.030 fM. Finally, the selectivity and feasibility of genosensor was evaluated by the analysis of derived nucleotides from mismatched sequences and the clinical samples of patients with leukemia as real samples, respectively.
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Puglia MK, Malhotra M, Kumar CV. Engineering functional inorganic nanobiomaterials: controlling interactions between 2D-nanosheets and enzymes. Dalton Trans 2020; 49:3917-3933. [PMID: 31799574 DOI: 10.1039/c9dt03893k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A better understanding of the enzyme-nanosheet interface is imperative for the design of functional, robust inorganic nanobiomaterials and biodevices, now more than ever, for use in a broad spectrum of applications. This feature article discusses recent advances in controlling the enzyme-nanosheet interface with regards to α-zirconium(iv) phosphate (α-ZrP), graphene oxide (GO), graphene, and MoS2 nanosheets. Specific focus will be placed on understanding the mechanisms with which these materials interact with enzymes and elaborate on particular ways to engineer and control these interactions. Our main discoveries include: (1) upon adsorption to the nanosheet surface, a decrease in the entropy of the enzyme's denatured state enhances stability; (2) proteins are used to create biophilic landing pads for increased enzyme stability on many different types of nanosheets; (3) proteins and enzymes are used as exfoliants by shear force to produce biofunctionalized nanosheet suspensions; and (4) bionfunctionalized nanosheets exhibit no acute toxicity. Recognizing proper methods to engineer the interface between enzymes and 2D-nanosheets, therefore, is an important step towards making green, sustainable, and environmentally conscious inorganic bionanomaterials for sensing, catalysis and drug delivery applications, as well as towards the successful manipulation of enzymes for advanced applications.
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Affiliation(s)
- Megan K Puglia
- University of Connecticut, Department of Chemistry, Storrs, CT 06269, USA.
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Han L, Tan J, Li J, Meng T, Wang Y, Wang S. Structurally improved reduced graphene oxide nanocluster structured assembly with Naringin for the effective photothermal therapy of colon tumour patients and nursing care management. Mol Phys 2020. [DOI: 10.1080/00268976.2020.1736674] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Liwei Han
- Department of Pain, Second Affiliated Hospital of Harbin Medical University, Harbin, People’s Republic of China
| | - Juan Tan
- Department of Pain, Second Affiliated Hospital of Harbin Medical University, Harbin, People’s Republic of China
| | - Jing Li
- Department of Pain, Second Affiliated Hospital of Harbin Medical University, Harbin, People’s Republic of China
| | - Tianyu Meng
- Department of Pain, Second Affiliated Hospital of Harbin Medical University, Harbin, People’s Republic of China
| | - Yuhang Wang
- Department of Pain, Second Affiliated Hospital of Harbin Medical University, Harbin, People’s Republic of China
| | - Sisi Wang
- Department of traditional Chinese medicine, Second Affiliated Hospital of Harbin Medical University, Harbin, People’s Republic of China
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Puglia MK, Aziz S, Brady KM, O'Neill M, Kumar CV. Stirred Not Shaken: Facile Production of High-Quality, High-Concentration Graphene Aqueous Suspensions Assisted by a Protein. ACS APPLIED MATERIALS & INTERFACES 2020; 12:3815-3826. [PMID: 31880423 DOI: 10.1021/acsami.9b15121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A simple method to produce record concentrations (up to 10 mg mL-1) of high-quality aqueous graphene suspensions by using an ordinary benchtop magnetic stirrer is reported. The shear rates employed here are almost 10 times less than those in previous reports, and graphene is efficiently separated from unexfoliated graphite during the synthesis. Systematic optimization of synthesis parameters, such as pH, protein concentration, temperature, stirrer speed, and volume of solution, afforded efficient conversion (100%) of graphite to graphene-aqueous suspensions. The synthesis is readily scaled-up with a continuous flow reactor where the graphene is produced and separated 24/7, with little or no human intervention. Raman spectroscopy confirmed little to no sp3 or oxidative defects, and that the graphene nanosheets consisted of three to five layers. The graphene suspensions were coated on aluminum and tested for thermal conductivity applications. The thermal conductivity of our graphene sample was calculated to be 684 W m-1 K-1, a value greater than that of a commercial sample. The activation energy measured for shear exfoliation by stirring was found to be over 45 billion times smaller than the corresponding thermal activation energy, affording physical insight into the process. We hypothesize that stirring selectively populates translational states that are necessary for exfoliation and thus requires far less energy than conventional exfoliation methods, where the energy is uniformly distributed among all available modes. Therefore, an efficient, convenient, and inexpensive method for graphene production in limited-resource settings is reported here.
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Affiliation(s)
- Megan K Puglia
- Department of Chemistry , University of Connecticut , 55 North Eagleville Road , Storrs , Connecticut 06268 , United States
| | - Sohan Aziz
- Department of Molecular and Cell Biology , University of Connecticut , 91 North Eagleville Road , Storrs , Connecticut 06268 , United States
| | - Kevin M Brady
- Department of Chemistry , University of Connecticut , 55 North Eagleville Road , Storrs , Connecticut 06268 , United States
| | - Mark O'Neill
- Mark O'Neill, LLC , 9500 Ray White Road, Suite 200 , Fort Worth , Texas 76244 , United States
| | - Challa V Kumar
- Department of Chemistry , University of Connecticut , 55 North Eagleville Road , Storrs , Connecticut 06268 , United States
- Department of Molecular and Cell Biology , University of Connecticut , 91 North Eagleville Road , Storrs , Connecticut 06268 , United States
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Niaraki Asli AE, Guo J, Lai PL, Montazami R, Hashemi NN. High-Yield Production of Aqueous Graphene for Electrohydrodynamic Drop-on-Demand Printing of Biocompatible Conductive Patterns. BIOSENSORS-BASEL 2020; 10:bios10010006. [PMID: 31963492 PMCID: PMC7167870 DOI: 10.3390/bios10010006] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 01/08/2020] [Accepted: 01/15/2020] [Indexed: 11/16/2022]
Abstract
Presented here is a scalable and aqueous phase exfoliation of graphite to high yield and quality of few layer graphene (FLG) using Bovine Serum Albomine (BSA) and wet ball milling. The produced graphene ink is tailored for printable and flexible electronics, having shown promising results in terms of electrical conductivity and temporal stability. Shear force generated by steel balls which resulted in 2–3 layer defect-free graphene platelets with an average size of hundreds of nm, and with a concentration of about 5.1 mg/mL characterized by Raman spectroscopy, atomic force microscopy (AFM), transmittance electron microscopy (TEM) and UV-vis spectroscopy. Further, a conductive ink was prepared and printed on flexible substrate (Polyimide) with controlled resolution. Scanning electron microscopy (SEM) and Profilometry revealed the effect of thermal annealing on the prints to concede consistent morphological characteristics. The resulted sheet resistance was measured to be Rs = 36.75 Ω/sqr for prints as long as 100 mm. Printable inks were produced in volumes ranging from 20 mL to 1 L, with potential to facilitate large scale production of graphene for applications in biosensors, as well as flexible and printable electronics.
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Affiliation(s)
- Amir Ehsan Niaraki Asli
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA; (A.E.N.A.); (J.G.); (P.L.L.); (R.M.)
| | - Jingshuai Guo
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA; (A.E.N.A.); (J.G.); (P.L.L.); (R.M.)
| | - Pei Lun Lai
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA; (A.E.N.A.); (J.G.); (P.L.L.); (R.M.)
| | - Reza Montazami
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA; (A.E.N.A.); (J.G.); (P.L.L.); (R.M.)
| | - Nicole N. Hashemi
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA; (A.E.N.A.); (J.G.); (P.L.L.); (R.M.)
- Department of Biomedical Sciences, Iowa State University, Ames, IA 50011, USA
- Correspondence:
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Kaur M, Singh G, Damarla K, Singh G, Wang H, Wang J, Aswal VK, Kumar A, Kang TS. Aqueous systems of a surface active ionic liquid having an aromatic anion: phase behavior, exfoliation of graphene flakes and its hydrogelation. Phys Chem Chem Phys 2019; 22:169-178. [PMID: 31793955 DOI: 10.1039/c9cp04449c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Surface active ionic liquid (SAIL) induced hydrogelation, in the absence of additives, is important considering the properties of soft-hydrogels that can be utilized in different applications. The present study is concerned with the phase behavior and hydrogelation of a SAIL, 1-hexadecyl-3-methylimidazolium p-toluenesulfonate, [C16mim][PTS]. The obtained information about the phase behavior along with the surfactant like behavior of the SAIL was exploited for effective exfoliation of graphene-flakes from graphite in aqueous medium that remain stable for at least one month. Thus the obtained dispersion of graphene-flakes was subsequently hydrogelated exploiting the observations made from the phase behavior of the SAIL, via entanglement of long worm-like micelles of the SAIL formed at higher concentration. The obtained graphene-flake based hydrogels were found to be equally stable as compared to the blank hydrogel as well as against centrifugation. The low melting point of hydrogel facilitates the extraction of graphene-flakes from the hydrogel matrix by heating and diluting the gel and there is no sign of agglomeration in the extracted graphene-flakes even if the extraction is carried out after a period of three months. The present work is an exemplary study on exfoliation, hydrogelation and extraction of graphene-flakes from a hydrogel, when required, using a SAIL and is expected to provide a new platform for utilization of SAILs for efficient graphene exfoliation and subsequent preparation of functional materials.
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Affiliation(s)
- Manvir Kaur
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-II, Guru Nanak Dev University, Amritsar-143005, India.
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Wang X, Huang K, Zhang H, Zeng L, Zhou Y, Jing T. Preparation of molecularly imprinted polymers on hemin-graphene surface for recognition of high molecular weight protein. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 105:110141. [DOI: 10.1016/j.msec.2019.110141] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 08/08/2019] [Accepted: 08/26/2019] [Indexed: 01/21/2023]
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Askari E, Naghib SM, Seyfoori A, Maleki A, Rahmanian M. Ultrasonic-assisted synthesis and in vitro biological assessments of a novel herceptin-stabilized graphene using three dimensional cell spheroid. ULTRASONICS SONOCHEMISTRY 2019; 58:104615. [PMID: 31450294 DOI: 10.1016/j.ultsonch.2019.104615] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 05/28/2019] [Accepted: 05/28/2019] [Indexed: 06/10/2023]
Abstract
In vivo assays of graphene and its derivatives are big challenges in biological evaluations because they require simultaneous long-term stability in aqueous dispersion and controllable systemic toxicity. Bifunctional graphene nanosheets which have key function in biomedical area are expected to address this challenge. Here, novel bifunctional graphene nanosheets were successfully synthesized in the presence of Herceptin, a natural antibody, using a facile ultrasonic-assisted method. Graphite layers were successfully exfoliated which resulted excellent stability of separated layers in herceptin solution. In aqueous solution, graphene concentration was effectively controlled by varying the herceptin content and sonication time. Furthermore, the toxicity of graphene was tested in both 2D and 3D spheroid cultures. The results showed that graphene toxicity were considerably reduced in spheroid culture compared to the 2D culture data. Moreover, the toxicity behavior of graphene was dependent on the exposed concentration of graphene that the mortality rate was significantly decreased when the concentration of graphene was below 1 µg/mL. This bifunctional graphene which possessed long-term stability in aqueous solutions and induced slight toxicity offers a promising nanostructure in tumor-targeted drug delivery, regenerative medicine and tissue engineering. This proof-of-concept study demonstrates the feasibility of ultrasonic assisted method in one-step synthesis of bifunctional nanomaterials and biostructures for clinical applications.
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Affiliation(s)
- Esfandyar Askari
- Nanotechnology Department, School of Advanced Technologies, Iran University of Science and Technology, P.O. Box 16846-13114, Tehran, Iran
| | - Seyed Morteza Naghib
- Nanotechnology Department, School of Advanced Technologies, Iran University of Science and Technology, P.O. Box 16846-13114, Tehran, Iran.
| | - Amir Seyfoori
- Biomaterials and Tissue Engineering Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran.
| | - Mehdi Rahmanian
- Biomaterials and Tissue Engineering Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
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TAKAYANAGI T, MIZUTA Y, BECCHAKU Y, MIZUGUCHI H. Dispersion of Graphene in an Aqueous Solution with Poly(sodium 4-styrenesulfonate) Monitored by Capillary Electrophoresis. CHROMATOGRAPHY 2019. [DOI: 10.15583/jpchrom.2019.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Toshio TAKAYANAGI
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University
| | - Yuto MIZUTA
- Faculty of Engineering, Tokushima University
| | - Yuta BECCHAKU
- Graduate School of Advanced Technology and Science, Tokushima University
| | - Hitoshi MIZUGUCHI
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University
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Narmani A, Rezvani M, Farhood B, Darkhor P, Mohammadnejad J, Amini B, Refahi S, Abdi Goushbolagh N. Folic acid functionalized nanoparticles as pharmaceutical carriers in drug delivery systems. Drug Dev Res 2019; 80:404-424. [PMID: 31140629 DOI: 10.1002/ddr.21545] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 03/02/2019] [Accepted: 05/07/2019] [Indexed: 12/15/2022]
Abstract
Conventional chemotherapeutic approaches in cancer therapy such as surgery, chemotherapy, and radiotherapy have several disadvantages due to their nontargeted distributions in the whole body. On the other hand, nanoparticles (NPs) based therapies are remarkably progressing to solve several limitations of conventional drug delivery systems (DDSs) including nonspecific biodistribution and targeting, poor water solubility, weak bioavailability and biodegradability, low pharmacokinetic properties, and so forth. The enhanced permeability and retention effect escape from P-glycoprotein trap in cancer cells as a passive targeting mechanism, and active targeting strategies are also other most important advantages of NPs in cancer diagnosis and therapy. Folic acid (FA) is one of the biologic molecules which has been targeted overexpressed-folic acid receptor (FR) on the surface of cancer cells. Therefore, conjugation of FA to NPs most easily enhances the FR-mediated targeting delivery of therapeutic agents. Here, the recent works in FA which have been decorated NPs-based DDSs are discussed and cancer therapy potency of these NPs in clinical trials are presented.
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Affiliation(s)
- Asghar Narmani
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - Melina Rezvani
- Department of Biology, Faculty of Sciences, Payame Noor University, Tehran, Iran
| | - Bagher Farhood
- Department of Medical Physics and Radiology, Faculty of Paramedical Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Parvaneh Darkhor
- Department of Medical Physics, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Javad Mohammadnejad
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - Bahram Amini
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Soheila Refahi
- Department of Medical Physics, Faculty of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Nouraddin Abdi Goushbolagh
- Department of Medical Physics, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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Li B, Wang T, Wang X, Wu X, Wang C, Miao F, Qin M, Wang W, Cao Y. Engineered Recombinant Proteins for Aqueous Ultrasonic Exfoliation and Dispersion of Biofunctionalized 2D Materials. Chemistry 2019; 25:7991-7997. [DOI: 10.1002/chem.201900716] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Bing Li
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
| | - Tiankuo Wang
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
| | - Xin Wang
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
| | - Xin Wu
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
| | - Chenyu Wang
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
| | - Feng Miao
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
| | - Meng Qin
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
| | - Wei Wang
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
| | - Yi Cao
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
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Zhang L, Sheng Y, Zehtab Yazdi A, Sarikhani K, Wang F, Jiang Y, Liu J, Zheng T, Wang W, Ouyang P, Chen P. Surface-assisted assembly of a histidine-rich lipidated peptide for simultaneous exfoliation of graphite and functionalization of graphene nanosheets. NANOSCALE 2019; 11:2999-3012. [PMID: 30698183 DOI: 10.1039/c8nr08397e] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Biological molecules have promising potential to exfoliate graphite and produce biocompatible graphene nano-materials for biomedical applications. Here, a systematic design of a histidine-rich lipidated peptide sequence is presented that simultaneously exfoliates graphite flakes and functionalizes the resulting graphene nanosheets (∼150 nm lateral size) with long-term dispersion stability in aqueous solution (>8 months). The details of peptide/peptide and peptide/graphite interactions are probed using various microscopy, spectroscopy and molecular dynamics simulation methods. The results show that histidine and stearic acid interact with the graphite surface through π-π stacking and hydrophobic forces, respectively. Surface-assisted assembly of peptide molecules is then initiated via hydrogen bonds between deprotonated histidine segments, and a textured peptide nano-structure is formed. The work of adhesion between the peptide and graphite is found to be high enough to promote exfoliation of graphite flakes through layer-by-layer peeling of graphene nanosheets. The positively charged arginine in the peptide is exposed outward, and is responsible for the stable dispersion. The peptide molecules are sufficiently small, presenting the possibility to insert into and increase the spacing between the graphitic layers for enhanced exfoliation. The peptide-functionalized graphene nanosheets not only show great biocompatibility with cells in vitro, but also enhance cancer drug uptake by the cells.
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Affiliation(s)
- Lei Zhang
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, CanadaN2L 3G1.
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Ebrahim-Habibi MB, Ghobeh M, Mahyari FA, Rafii-Tabar H, Sasanpour P. An investigation into non-covalent functionalization of a single-walled carbon nanotube and a graphene sheet with protein G:A combined experimental and molecular dynamics study. Sci Rep 2019; 9:1273. [PMID: 30718580 PMCID: PMC6362288 DOI: 10.1038/s41598-018-37311-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 12/06/2018] [Indexed: 12/15/2022] Open
Abstract
Investigation of non-covalent interaction of hydrophobic surfaces with the protein G (PrG) is necessary due to their frequent utilization in immunosensors and ELISA. It has been confirmed that surfaces, including carbonous-nanostructures (CNS) could orient proteins for a better activation. Herein, PrG interaction with single-walled carbon nanotube (SWCNT) and graphene (Gra) nanostructures was studied by employing experimental and MD simulation techniques. It is confirmed that the PrG could adequately interact with both SWCNT and Gra and therefore fine dispersion for them was achieved in the media. Results indicated that even though SWCNT was loaded with more content of PrG in comparison with the Gra, the adsorption of the PrG on Gra did not induce significant changes in the IgG tendency. Several orientations of the PrG were adopted in the presence of SWCNT or Gra; however, SWCNT could block the PrG-FcR. Moreover, it was confirmed that SWCNT reduced the α-helical structure content in the PrG. Reduction of α-helical structure of the PrG and improper orientation of the PrG-SWCNT could remarkably decrease the PrG tendency to the Fc of the IgG. Importantly, the Gra could appropriately orient the PrG by both exposing the PrG-FcR and also by blocking the fragment of the PrG that had tendency to interact with Fab in IgG.
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Affiliation(s)
- Mohammad-Bagher Ebrahim-Habibi
- Department of Medical Physics and Biomedical Engineering, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Ghobeh
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | | | - Hashem Rafii-Tabar
- Department of Medical Physics and Biomedical Engineering, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Pezhman Sasanpour
- Department of Medical Physics and Biomedical Engineering, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Ma L, Zhou M, He C, Li S, Fan X, Nie C, Luo H, Qiu L, Cheng C. Graphene-based advanced nanoplatforms and biocomposites from environmentally friendly and biomimetic approaches. GREEN CHEMISTRY 2019. [DOI: 10.1039/c9gc02266j] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Environmentally friendly and biomimetic approaches to fabricate graphene-based advanced nanoplatforms and biocomposites for biomedical applications are summarized in this review.
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Affiliation(s)
- Lang Ma
- Department of Ultrasound
- West China Hospital
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
| | - Mi Zhou
- College of Biomass Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Chao He
- Department of Ultrasound
- West China Hospital
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
| | - Shuang Li
- Functional Materials
- Department of Chemistry
- Technische Universität Berlin
- 10623 Berlin
- Germany
| | - Xin Fan
- Department of Ultrasound
- West China Hospital
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
| | - Chuanxiong Nie
- Department of Chemistry and Biochemistry
- Freie Universitat Berlin
- Berlin 14195
- Germany
| | - Hongrong Luo
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610064
- China
| | - Li Qiu
- Department of Ultrasound
- West China Hospital
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
| | - Chong Cheng
- Department of Ultrasound
- West China Hospital
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
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Sui S, Zhu S, Su L, Ma L, He C, Liu E, He F, Shi C, Zhao N. Assembly Multifunctional Three-Dimensional Carbon Networks by Controlling Intermolecular Forces. ACS APPLIED MATERIALS & INTERFACES 2018; 10:36284-36289. [PMID: 30270619 DOI: 10.1021/acsami.8b12978] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Three-dimensional (3D) carbon networks (3DCNs) enjoy the merits of high surface area, effective mass-transfer ability, and mechanical stability. The physicochemical properties of such materials not only depend on their microstructures but also rely on the assembly forms. This work achieves different assembly forms of 3DCNs on the macroscale from powder, monolith, to clay and reveals the relations between intermolecular forces and these assembly forms. With the "weak" van der Waals forces, only 3DCN powders are obtained. The N-doping effect increases the part of "strong" van der Waals forces, which enables 3DCNs assembled as a monolith and supports 43 000 times its own weight. Furthermore, the introduction of aniline molecules and the corresponding hydrogen bond connections make carbon networks to transform into a clay with superior ductility and plasticity. Considering that 3DCNs can be engineered into functionalized materials by in situ incorporation of functional components such as Fe3O4, the composites with controllable forms are treated as promising candidate materials used in various fields.
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Affiliation(s)
- Simi Sui
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials , Tianjin University , Tianjin 300350 , China
- Key Laboratory of Advanced Ceramics and Machining Technology , Ministry of Education , Tianjin 300350 , China
| | - Shan Zhu
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials , Tianjin University , Tianjin 300350 , China
| | - Lina Su
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials , Tianjin University , Tianjin 300350 , China
| | - Liying Ma
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials , Tianjin University , Tianjin 300350 , China
| | - Chunnian He
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials , Tianjin University , Tianjin 300350 , China
- Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300350 , China
- Key Laboratory of Advanced Ceramics and Machining Technology , Ministry of Education , Tianjin 300350 , China
| | - Enzuo Liu
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials , Tianjin University , Tianjin 300350 , China
- Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300350 , China
| | - Fang He
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials , Tianjin University , Tianjin 300350 , China
| | - Chunsheng Shi
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials , Tianjin University , Tianjin 300350 , China
| | - Naiqin Zhao
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials , Tianjin University , Tianjin 300350 , China
- Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300350 , China
- Key Laboratory of Advanced Ceramics and Machining Technology , Ministry of Education , Tianjin 300350 , China
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A Simple Flow Reactor for Continuous Synthesis of Biographene for Enzymology Studies. Methods Enzymol 2018. [PMID: 30244794 DOI: 10.1016/bs.mie.2018.08.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
The unique properties of graphene make it an intriguing platform for the attachment and enhancement of biological molecules, but it has yet to achieve its full potential in terms of biological applications. Single-layer graphene is expensive, making alternatives to this material highly desired for applications that require high-quality graphene in large quantities. In this context, we report a simple, environmentally friendly, nonlabor-intensive method for the synthesis of colloidal graphene suspensions of 3-5 layers, stabilized by bovine serum albumin, in water. The method involves a flow reactor designed to continually yield high-quality graphene colloids, synthesized, purified, and optimized all in one setup. The flow reactor is able to produce colloidal graphene sheets on a multigram scale, and these colloids were characterized by Raman spectroscopy, electron microscopy, and zeta potential studies. The average size of the sheets is 0.16μm2, each consisting of 3-5 layers of graphene with little or no sp3 defects. These graphene colloids stabilized by the protein were successfully used in protein kinetic studies as well as in surface plasmon resonance protein binding studies. The ease of synthesis of these high-quality graphene colloidal suspensions in water provides an exciting opportunity for biographene to be used on an industrial scale for electronic, thermal, and enzymology applications.
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Lebre F, Hanlon D, Boland JB, Coleman J, Lavelle EC. Exfoliation in Endotoxin‐Free Albumin Generates Pristine Graphene with Reduced Inflammatory Properties. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/adbi.201800102] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Filipa Lebre
- Adjuvant Research GroupSchool of Biochemistry and ImmunologyTrinity Biomedical Sciences InstituteTrinity College Dublin Dublin 2 D02 PN40 Ireland
- Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN)Trinity College Dublin Dublin 2 D02 PN40 Ireland
- Advanced Materials Bio‐Engineering Research Centre (AMBER)Trinity College Dublin Dublin 2 D02 PN40 Ireland
| | - Damien Hanlon
- Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN)Trinity College Dublin Dublin 2 D02 PN40 Ireland
- Advanced Materials Bio‐Engineering Research Centre (AMBER)Trinity College Dublin Dublin 2 D02 PN40 Ireland
- School of PhysicsUniversity of DublinTrinity College Dublin 2 Ireland
| | - John B. Boland
- Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN)Trinity College Dublin Dublin 2 D02 PN40 Ireland
- Advanced Materials Bio‐Engineering Research Centre (AMBER)Trinity College Dublin Dublin 2 D02 PN40 Ireland
- School of PhysicsUniversity of DublinTrinity College Dublin 2 Ireland
| | - Jonathan Coleman
- Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN)Trinity College Dublin Dublin 2 D02 PN40 Ireland
- Advanced Materials Bio‐Engineering Research Centre (AMBER)Trinity College Dublin Dublin 2 D02 PN40 Ireland
- School of PhysicsUniversity of DublinTrinity College Dublin 2 Ireland
| | - Ed C. Lavelle
- Adjuvant Research GroupSchool of Biochemistry and ImmunologyTrinity Biomedical Sciences InstituteTrinity College Dublin Dublin 2 D02 PN40 Ireland
- Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN)Trinity College Dublin Dublin 2 D02 PN40 Ireland
- Advanced Materials Bio‐Engineering Research Centre (AMBER)Trinity College Dublin Dublin 2 D02 PN40 Ireland
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Affiliation(s)
- Samad Ahadian
- Department of Bioengineering, University of California, Los Angeles, CA 90095-1600, USA
- Center for Minimally Invasive Therapeutics (C-MIT), University of California, Los Angeles, CA 90095-1600, USA
- California NanoSystems Institute (CNSI), University of California, Los Angeles, CA 90095-1600, USA
| | - Ali Khademhosseini
- Department of Bioengineering, University of California, Los Angeles, CA 90095-1600, USA
- Center for Minimally Invasive Therapeutics (C-MIT), University of California, Los Angeles, CA 90095-1600, USA
- California NanoSystems Institute (CNSI), University of California, Los Angeles, CA 90095-1600, USA
- Department of Radiological Sciences, University of California, Los Angeles, CA 90095-1600, USA
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA 90095-1600, USA
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Tiwari P, Kaur N, Sharma V, Mobin SM. High-yield graphene produced from the synergistic effect of inflated temperature and gelatin offers high stability and cellular compatibility. Phys Chem Chem Phys 2018; 20:20096-20107. [PMID: 30024577 DOI: 10.1039/c8cp02263a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The direct exfoliation of graphite (Gr) is highly desirable and feasible compared to conventional processes owing to its non-oxidative, facile and controlled synthesis conditions. Herein, gelatin (gel), a hydrolysed form of collagen, was used as an exfoliant to directly exfoliate Gr. The main advantages of exploring gel as an exfoliant is its easy availability, low cost and high biocompatibility, which alleviate the drawbacks of previous exfoliation methods. The effect of the exfoliation parameters such as temperature, ratio of interacting species and pH of the solution offers a high yield of graphene (G) with the added advantages of good solubility, easy dispersibility and high stability. The temperature elevation caused by the dissipation of sonic waves facilitates a high exfoliation yield. Yield of 4.37 mg mL-1 of G was achieved under the conditions of 7 h sonication at 60 °C, pH 7 and Gr to gel ratio of 60 : 40, whereas yield of 1 mg mL-1 was achieved under sonication at 30 °C. Raman spectroscopy and transmission electron microscopy indicated the production of G sheets with 3-5 layers. The adsorption of gel on the surface of G via π-π interactions offers high stability and retains its inherent crystallinity. The as-synthesized G dispersion exhibits good cyto- and hemocompatibility. Unlike graphene oxide, the G dispersion does not affect RBCs at a relatively high concentration of 10 mg mL-1. These findings offer new avenues for the large-scale production of G and promote its biomedical applications, particularly in scaffold materials and intravenous drug delivery.
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Affiliation(s)
- Pranav Tiwari
- Discipline of Metallurgical Engineering and Material Science, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore 453552, India.
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Zhang X, Wang L, Lu Q, Kaplan DL. Mass Production of Biocompatible Graphene Using Silk Nanofibers. ACS APPLIED MATERIALS & INTERFACES 2018; 10:22924-22931. [PMID: 29913067 DOI: 10.1021/acsami.8b04777] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Mass production of high-quality graphene dispersions under mild conditions impacts the utility of the material for biomedical applications. Various proteins have been used to prepare graphene dispersions, rare sources, and expensive prices for these proteins restrict their large-scale utility for the production of graphene. Here, inexpensive silk proteins as an abundant resource in nature were used for graphene exfoliation. The silk proteins were assembled into hydrophobic nanofibers with negative charge, and then optimized for the production of graphene. Significantly higher concentrations (>8 mg mL-1) and yields (>30%) of graphene dispersions under ambient aqueous conditions were achieved compared with previous protein-assisted exfoliation systems. The exfoliated graphene exhibited excellent stability in water and fetal bovine serum solution, cytocompatibility, and conductivity, suggesting a promising future in biomedical and bioengineering applications.
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Affiliation(s)
| | - Ling Wang
- Biology Institute , Qilu University of Technology (Shandong Academy of Sciences) , Shandong 250000 , People's Republic of China
| | | | - David L Kaplan
- Department of Biomedical Engineering , Tufts University , Medford , Massachusetts 02155 , United States
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Kim T, Cho M, Yu KJ. Flexible and Stretchable Bio-Integrated Electronics Based on Carbon Nanotube and Graphene. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E1163. [PMID: 29986539 PMCID: PMC6073353 DOI: 10.3390/ma11071163] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 06/30/2018] [Accepted: 07/06/2018] [Indexed: 11/23/2022]
Abstract
Scientific and engineering progress associated with increased interest in healthcare monitoring, therapy, and human-machine interfaces has rapidly accelerated the development of bio-integrated multifunctional devices. Recently, compensation for the cons of existing materials on electronics for health care systems has been provided by carbon-based nanomaterials. Due to their excellent mechanical and electrical properties, these materials provide benefits such as improved flexibility and stretchability for conformal integration with the soft, curvilinear surfaces of human tissues or organs, while maintaining their own unique functions. This review summarizes the most recent advanced biomedical devices and technologies based on two most popular carbon based materials, carbon nanotubes (CNTs) and graphene. In the beginning, we discuss the biocompatibility of CNTs and graphene by examining their cytotoxicity and/or detrimental effects on the human body for application to bioelectronics. Then, we scrutinize the various types of flexible and/or stretchable substrates that are integrated with CNTs and graphene for the construction of high-quality active electrode arrays and sensors. The convergence of these carbon-based materials and bioelectronics ensures scalability and cooperativity in various fields. Finally, future works with challenges are presented in bio-integrated electronic applications with these carbon-based materials.
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Affiliation(s)
- Taemin Kim
- School of Electrical Engineering, Yonsei University, Seoul 03722, Korea.
| | - Myeongki Cho
- School of Electrical Engineering, Yonsei University, Seoul 03722, Korea.
| | - Ki Jun Yu
- School of Electrical Engineering, Yonsei University, Seoul 03722, Korea.
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Ahadian S, Khademhosseini A. Smart scaffolds in tissue regeneration. Regen Biomater 2018; 5:125-128. [PMID: 29977595 PMCID: PMC6007551 DOI: 10.1093/rb/rby007] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Revised: 03/23/2018] [Accepted: 03/29/2018] [Indexed: 12/12/2022] Open
Abstract
Recent advances in biofabrication technologies and chemical synthesis approaches have enabled the fabrication of smart scaffolds that aim to mimic the dynamic nature of the native extracellular matrix. These scaffolds have paved the way for tissue regeneration in a dynamic and controllable manner.
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Affiliation(s)
- Samad Ahadian
- Toronto General Research Institute, University Health Network, Toronto, ON M5G 2C4, Canada
| | - Ali Khademhosseini
- Department of Bioengineering
- Department of Radiology
- Department of Chemical and Biomolecular Engineering
- Center for Minimally Invasive Therapeutics (C-MIT)
- California NanoSystems Institute (CNSI), University of California, Los Angeles, CA 90095-1600, USA
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Abstract
The systematic study of nanoparticle-biological interactions requires particles to be reproducibly dispersed in relevant fluids along with further development in the identification of biologically relevant structural details at the materials-biology interface. Here, we develop a biocompatible long-term colloidally stable water dispersion of few-layered graphene nanoflakes in the biological exposure medium in which it will be studied. We also report the study of the orientation and functionality of key proteins of interest in the biolayer (corona) that are believed to mediate most of the early biological interactions. The evidence accumulated shows that graphene nanoflakes are rich in effective apolipoprotein A-I presentation, and we are able to map specific functional epitopes located in the C-terminal portion that are known to mediate the binding of high-density lipoprotein to binding sites in receptors that are abundant in the liver. This could suggest a way of connecting the materials' properties to the biological outcomes.
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Chen H, Liu T, Su Z, Shang L, Wei G. 2D transition metal dichalcogenide nanosheets for photo/thermo-based tumor imaging and therapy. NANOSCALE HORIZONS 2018; 3:74-89. [PMID: 32254070 DOI: 10.1039/c7nh00158d] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Two-dimensional (2D) graphene-like nanomaterials show wide applications in the fields of nanodevices, sensors, energy materials, catalysis, drug delivery, bioimaging, and tissue engineering. Recently, many studies have been focused on the synthesis and application of 2D transition metal dichalcogenide (TMD) nanosheets for various biomedical applications. In particular, 2D TMD nanosheets exhibit great advantages for tumor imaging and therapy compared to some traditional nanomaterials due to their high specific surface area, good biocompatibility, easy modification, and ultrahigh light and heat conversion efficiency. In this review, we summarize the recent advances in the synthesis, modification, and photo/thermo-based tumor imaging and therapy of 2D TMD nanosheets. The important studies on tumor bioimaging with TMD nanosheets, such as X-ray computed tomography, magnetic resonance imaging, and photoacoustic imaging, are demonstrated and discussed. In another section, the physical photothermal and photodynamic therapies as well as the pharmacological therapy of tumors with TMD nanosheet-based nanohybrids are introduced. It is expected that this work will be valuable for readers to understand the synthesis and modification of TMD nanosheets to design novel 2D functional nanomaterials for photo/thermo-based tumor imaging and therapy in one aspect, and in another aspect will extend the applications of TMD-based nanomaterials in materials science, analytical science, electrocatalysis, tissue engineering, and others.
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Affiliation(s)
- Hang Chen
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 100029 Beijing, China.
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Tao H, Zhang Y, Gao Y, Sun Z, Yan C, Texter J. Scalable exfoliation and dispersion of two-dimensional materials - an update. Phys Chem Chem Phys 2018; 19:921-960. [PMID: 27976772 DOI: 10.1039/c6cp06813h] [Citation(s) in RCA: 120] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The preparation of dispersions of single- and few-sheet 2D materials in various solvents, as well as the characterization methods applied to such dispersions, is critically reviewed. Motivating factors for producing single- and few-sheet dispersions of 2D materials in liquids are briefly discussed. Many practical applications are expected for such materials that do not require high purity formulations and tight control of donor and acceptor concentrations, as required in conventional Fab processing of semiconductor chips. Approaches and challenges encountered in exfoliating 2D materials in liquids are reviewed. Ultrasonication, mechanical shearing, and electrochemical processing approaches are discussed, and their respective limitations and promising features are critiqued. Supercritical and more conventional liquid and solvent processing are then discussed in detail. The effects of various types of stabilizers, including surfactants and other amphiphiles, as well as polymers, including homopolymeric electrolytes, nonionic polymers, and nanolatexes, are discussed. Consideration of apparent successes of stabilizer-free dispersions indicates that extensive exfoliation in the absence of dispersing aids results from processing-induced surface modifications that promote stabilization of 2D material/solvent interactions. Also apparent paradoxes in "pristineness" and optical extinctions in dispersions suggest that there is much we do not yet quantitatively understand about the surface chemistry of these materials. Another paradox, emanating from modeling dilute solvent-only exfoliation by sonication using polar components of solubility parameters and surface tension for pristine graphene with no polar structural component, is addressed. This apparent paradox appears to be resolved by realizing that the reactivity of graphene to addition reactions of solvent radicals produced by sonolysis is accompanied by unintended polar surface modifications that promote attractive interactions with solvent. This hypothesis serves to define important theoretical and experimental studies that are needed. We conclude that the greatest promise for high volume and high concentration processing lies in applying methods that have not yet been extensively reported, particularly wet comminution processing using small grinding media of various types.
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Affiliation(s)
- Hengcong Tao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Yuqin Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Yunnan Gao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Zhenyu Sun
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Chao Yan
- School of Material Science & Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - John Texter
- School of Engineering Technology, Eastern Michigan University, Ypsilanti, MI 48197, USA.
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Recent Developments Concerning the Dispersion Methods and Mechanisms of Graphene. COATINGS 2018. [DOI: 10.3390/coatings8010033] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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50
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Mamaghani KR, Naghib SM, Zahedi A, Rahmanian M, Mozafari M. GelMa/PEGDA containing graphene oxide as an IPN hydrogel with superior mechanical performance. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.matpr.2018.04.193] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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