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Babai D, Pinkas I, Naveh D, Tenne R. Polyetherimide (PEI) nanocomposite with WS 2 nanotubes. NANOSCALE 2024; 16:9917-9934. [PMID: 38686740 DOI: 10.1039/d4nr00818a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Nanocomposite materials, integrating nanoscale additives into a polymer matrix, hold immense promise for their exceptional property amalgamation. This study delves into the fabrication and characterization of polyetherimide (PEI) nanocomposite strings fortified with multiwall WS2 nanotubes. The manufacturing process capitalizes on the preferential alignment of WS2 nanotubes along the string axis, corroborated by scanning electron microscopy (SEM). Mechanical measurements unveil a remarkable acceleration of strain hardening in the nanocomposite strings, chiefly attributed to the WS2 nanotubes. Structural analyses via X-ray diffraction (XRD) and wide-angle X-ray scattering (WAXS) reveal intriguing structural alterations during tensile deformation. Notably a semi-crystalline framework ∼100 nm in diameter surrounding the WS2 nanotubes emerges, which is stabilized by the π-π interactions between the PEI chains. The amorphous majority phase (97% by volume) undergoes also major structural changes upon strain becoming more compact and closing-up of the distance beweeetn the PEI chains. Dynamic mechanical analysis (DMA) demonstrates improved thermal stability of the evolved semi-crystalline π-π oriented PEI molecules, characterized by delayed thermal "structural melting", underscoring the pivotal role of the WS2 nanotubes in reinforcing the nanocomposite. The insight gained in this study of WS2 nanotube-reinforced PEI nanocomposite strings, could offer diverse applications for such tailor-made polymeric materials.
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Affiliation(s)
- Dotan Babai
- Faculty of Engineering, Bar-Ilan University, Ramat-Gan 5290002, Israel.
- Department of Molecular Chemistry and Materials Science, Weizmann Institute, Rehovot 7600001, Israel.
| | - Iddo Pinkas
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 7600001, Israel
| | - Doron Naveh
- Faculty of Engineering, Bar-Ilan University, Ramat-Gan 5290002, Israel.
| | - Reshef Tenne
- Department of Molecular Chemistry and Materials Science, Weizmann Institute, Rehovot 7600001, Israel.
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Ansari MA, Tripathi T, Venkidasamy B, Monziani A, Rajakumar G, Alomary MN, Alyahya SA, Onimus O, D'souza N, Barkat MA, Al-Suhaimi EA, Samynathan R, Thiruvengadam M. Multifunctional Nanocarriers for Alzheimer's Disease: Befriending the Barriers. Mol Neurobiol 2024; 61:3042-3089. [PMID: 37966683 DOI: 10.1007/s12035-023-03730-z] [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: 04/19/2023] [Accepted: 10/12/2023] [Indexed: 11/16/2023]
Abstract
Neurodegenerative diseases (NDDs) have been increasing in incidence in recent years and are now widespread worldwide. Neuronal death is defined as the progressive loss of neuronal structure or function which is closely associated with NDDs and represents the intrinsic features of such disorders. Amyotrophic lateral sclerosis, frontotemporal dementia, Alzheimer's, Parkinson's, and Huntington's diseases (AD, PD, and HD, respectively) are considered neurodegenerative diseases that affect a large number of people worldwide. Despite the testing of various drugs, there is currently no available therapy that can remedy or effectively slow the progression of these diseases. Nanomedicine has the potential to revolutionize drug delivery for the management of NDDs. The use of nanoparticles (NPs) has recently been developed to improve drug delivery efficiency and is currently subjected to extensive studies. Nanoengineered particles, known as nanodrugs, can cross the blood-brain barrier while also being less invasive compared to the most treatment strategies in use. Polymeric, magnetic, carbonic, and inorganic NPs are examples of NPs that have been developed to improve drug delivery efficiency. Primary research studies using NPs to cure AD are promising, but thorough research is needed to introduce these approaches to clinical use. In the present review, we discussed the role of metal-based NPs, polymeric nanogels, nanocarrier systems such as liposomes, solid lipid NPs, polymeric NPs, exosomes, quantum dots, dendrimers, polymersomes, carbon nanotubes, and nanofibers and surfactant-based systems for the therapy of neurodegenerative diseases. In addition, we highlighted nanoformulations such as N-butyl cyanoacrylate, poly(butyl cyanoacrylate), D-penicillamine, citrate-coated peptide, magnetic iron oxide, chitosan (CS), lipoprotein, ceria, silica, metallic nanoparticles, cholinesterase inhibitors, an acetylcholinesterase inhibitors, metal chelators, anti-amyloid, protein, and peptide-loaded NPs for the treatment of AD.
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Affiliation(s)
- Mohammad Azam Ansari
- Department of Epidemic Disease Research, Institute for Research & Medical Consultations, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, 31441, Dammam, Saudi Arabia
| | - Takshashila Tripathi
- Department of Neuroscience, Physiology & Pharmacology, University College London, London, UK
| | - Baskar Venkidasamy
- Department of Oral and Maxillofacial Surgery, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 600077, Tamil Nadu, India
| | - Alan Monziani
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI, USA
| | - Govindasamy Rajakumar
- Department of Orthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 600077, Tamil Nadu, India
| | - Mohammad N Alomary
- Advanced Diagnostic and Therapeutic Institute, King Abdulaziz City for Science and Technology, 11442, Riyadh, Saudi Arabia
| | - Sami A Alyahya
- Wellness and Preventive Medicine Institute, King Abdulaziz City for Science and Technology, 11442, Riyadh, Saudi Arabia
| | - Oriane Onimus
- Faculty of Basic and Biomedical Sciences, University of Paris, Paris, France
| | - Naomi D'souza
- UCL Institute of Ophthalmology, 11-43 Bath Street, London, EC1V 9EL, UK
| | - Md Abul Barkat
- Department of Pharmaceutics, College of Pharmacy, University of Hafr Al-Batin, Hafr Al-Batin, Saudi Arabia
| | - Ebtesam A Al-Suhaimi
- Research Consultation Department, Vice Presidency for Scientific Research and Innovation, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, 31441, Dammam, Saudi Arabia
| | - Ramkumar Samynathan
- Department of Oral and Maxillofacial Surgery, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 600077, Tamil Nadu, India
| | - Muthu Thiruvengadam
- Department of Crop Science, College of Sanghuh Life Science, Konkuk University, Seoul, 05029, Republic of Korea.
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3
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Bahri M, Yu D, Zhang CY, Chen Z, Yang C, Douadji L, Qin P. Unleashing the potential of tungsten disulfide: Current trends in biosensing and nanomedicine applications. Heliyon 2024; 10:e24427. [PMID: 38293340 PMCID: PMC10826743 DOI: 10.1016/j.heliyon.2024.e24427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 12/18/2023] [Accepted: 01/09/2024] [Indexed: 02/01/2024] Open
Abstract
The discovery of graphene ignites a great deal of interest in the research and advancement of two-dimensional (2D) layered materials. Within it, semiconducting transition metal dichalcogenides (TMDCs) are highly regarded due to their exceptional electrical and optoelectronic properties. Tungsten disulfide (WS2) is a TMDC with intriguing properties, such as biocompatibility, tunable bandgap, and outstanding photoelectric characteristics. These features make it a potential candidate for chemical sensing, biosensing, and tumor therapy. Despite the numerous reviews on the synthesis and application of TMDCs in the biomedical field, no comprehensive study still summarizes and unifies the research trends of WS2 from synthesis to biomedical applications. Therefore, this review aims to present a complete and thorough analysis of the current research trends in WS2 across several biomedical domains, including biosensing and nanomedicine, covering antibacterial applications, tissue engineering, drug delivery, and anticancer treatments. Finally, this review also discusses the potential opportunities and obstacles associated with WS2 to deliver a new outlook for advancing its progress in biomedical research.
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Affiliation(s)
- Mohamed Bahri
- Center of Precision Medicine and Healthcare, Tsinghua-Berkeley Shenzhen Institute, Shenzhen, Guangdong Province, 518055, China
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Dongmei Yu
- School of Mechanical, Electrical & Information Engineering, Shandong University, Weihai, Shandong 264209, China
| | - Can Yang Zhang
- Center of Precision Medicine and Healthcare, Tsinghua-Berkeley Shenzhen Institute, Shenzhen, Guangdong Province, 518055, China
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Zhenglin Chen
- Center of Precision Medicine and Healthcare, Tsinghua-Berkeley Shenzhen Institute, Shenzhen, Guangdong Province, 518055, China
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Chengming Yang
- University of Science and Technology Hospital, Shenzhen, Guangdong Province, China
| | - Lyes Douadji
- Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences, Chongqing City, China
| | - Peiwu Qin
- Center of Precision Medicine and Healthcare, Tsinghua-Berkeley Shenzhen Institute, Shenzhen, Guangdong Province, 518055, China
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
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He Y, Shi F, Hu J, Li H, Chen X, Yuan L, Lu Y, Du W, Li R, Wu J, Deng F, Yu D. Magnetic graphene oxide nanocomposites induce cytotoxicity in ADSCs via GPX4 regulating ferroptosis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 269:115745. [PMID: 38029583 DOI: 10.1016/j.ecoenv.2023.115745] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 10/30/2023] [Accepted: 11/24/2023] [Indexed: 12/01/2023]
Abstract
Magnetic graphene oxide nanocomposites (MGO NPs) have been widely studied in biomedical applications. However, their cytotoxicity and underlying mechanisms remain unclear. In this study, the biosafety of MGO NPs was investigated, and the mechanism involved in ferroptosis was further explored. MGO can produce cytotoxicity in ADSCs, which is dependent on their concentration. Ferroptosis was involved in MGO NP-induced ADSC survival inhibition by increasing total ROS and lipid ROS accumulation as well as regulating the expression levels of ferroptosis-related genes and proteins. GPX4 played a critical role in the MGO NP-induced ADSC ferroptosis process, and overexpressing GPX4 suppressed ferroptosis to increase cell survival. This study provides a theoretical basis for the biosafety management of MGO NPs used in the field of biomedical treatment.
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Affiliation(s)
- Yi He
- Hospital of Stomatology, Guanghua School of Stomatology, Institute of Stomatological Research, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Fangyang Shi
- Hospital of Stomatology, Guanghua School of Stomatology, Institute of Stomatological Research, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Jiajun Hu
- Hospital of Stomatology, Guanghua School of Stomatology, Institute of Stomatological Research, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Hongyu Li
- Hospital of Stomatology, Guanghua School of Stomatology, Institute of Stomatological Research, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Xun Chen
- Hospital of Stomatology, Guanghua School of Stomatology, Institute of Stomatological Research, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Lingyu Yuan
- Hospital of Stomatology, Guanghua School of Stomatology, Institute of Stomatological Research, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Yunyang Lu
- Hospital of Stomatology, Guanghua School of Stomatology, Institute of Stomatological Research, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Weidong Du
- Hospital of Stomatology, Guanghua School of Stomatology, Institute of Stomatological Research, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Runze Li
- Hospital of Stomatology, Guanghua School of Stomatology, Institute of Stomatological Research, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Jie Wu
- Hospital of Stomatology, Guanghua School of Stomatology, Institute of Stomatological Research, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Feilong Deng
- Hospital of Stomatology, Guanghua School of Stomatology, Institute of Stomatological Research, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China.
| | - Dongsheng Yu
- Hospital of Stomatology, Guanghua School of Stomatology, Institute of Stomatological Research, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China.
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5
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Magee E, Tang F, Walker M, Zak A, Tenne R, McNally T. Silane functionalization of WS 2 nanotubes for interaction with poly(lactic acid). NANOSCALE 2023; 15:7577-7590. [PMID: 37039126 DOI: 10.1039/d3nr00583f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Functionalisation of nanofillers is required for the promotion of strong interfacial interactions with polymers and is essential as a route for the preparation of (nano)composites with superior mechanical properties. Tungsten disulphide nanotubes (WS2 NTs) were functionalized using (3-aminopropyl) triethoxysilane (APTES) for preparation of composites with poly(lactic acid) (PLA). The WS2 NTs : APTES ratios used were 1 : 1, 1 : 2 and 1 : 4 WS2 NTs : APTES. The APTES formed siloxane networks bound to the NTs via surface oxygen and carbon moieties adsorbed on the WS2 NTs surface, detected by X-ray photoelectron spectroscopy (XPS) studies and chemical mapping using energy dispersive X-ray spectroscopy in the scanning transmission electron microscope (STEM-EDS). The successful silane modification of the WS2 NTs was clearly evident with both significant peak shifting by as much as 60 cm-1 for Si-O-Si vibrations (FTIR) and peak broadening of the A1g band in the Raman spectra of the WS2 NTs. The evolution of new bands was also observed and are associated with Si-CH2-CH2 and, symmetric and assymetric -NH3+ deformation modes (FTIR). Further evidence for functionalization was obtained from zeta potential measurements as there was a change in surface charge from negative for pure WS2 NTs to positive for APTES modified WS2 NTs. Additionally, the thermal stability of APTES was shifted to much higher temperatures as it was bound to the WS2 NTs. The APTES modified WS2 NTs were organophilic and readily dispersed in PLA, while presence of the pendant amine and hydroxyl groups resulted in strong interfacial interactions with the polymer matrix. The inclusion of as little as 0.5 wt% WS2 NTs modified with 2.0 wt% APTES resulted in an increase of 600% in both the elongation at break (a measure of ductility) and the tensile toughness relative to neat PLA, without impacting the stiffness or strength of the polymer.
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Affiliation(s)
- Eimear Magee
- International Institute for Nanocomposites Manufacturing (IINM), University of Warwick, CV4 7AL, UK.
| | | | - Marc Walker
- Department of Physics, University of Warwick, Coventry CV4 7AL, UK
| | - Alla Zak
- Physics Department, Faculty of Sciences, Holon Institute of Technology - HIT, Holon 5810201, Israel
| | - Reshef Tenne
- Molecular Chemistry and Material Science, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Tony McNally
- International Institute for Nanocomposites Manufacturing (IINM), University of Warwick, CV4 7AL, UK.
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Gu C, Wang Z, Pan Y, Zhu S, Gu Z. Tungsten-based Nanomaterials in the Biomedical Field: A Bibliometric Analysis of Research Progress and Prospects. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2204397. [PMID: 35906814 DOI: 10.1002/adma.202204397] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 07/17/2022] [Indexed: 06/15/2023]
Abstract
Tungsten-based nanomaterials (TNMs) with diverse nanostructures and unique physicochemical properties have been widely applied in the biomedical field. Although various reviews have described the application of TNMs in specific biomedical fields, there are still no comprehensive studies that summarize and analyze research trends of the field as a whole. To identify and further promote the development of biomedical TNMs, a bibliometric analysis method is used to analyze all relevant literature on this topic. First, general bibliometric distributions of the dataset by year, country, institute, referenced source, and research hotspots are recognized. Next, a comprehensive review of the subjectively recognized research hotspots in various biomedical fields, including biological sensing, anticancer treatments, antibacterials, and toxicity evaluation, is provided. Finally, the prospects and challenges of TNMs are discussed to provide a new perspective for further promoting their development in biomedical research.
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Affiliation(s)
- Chenglu Gu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Beijing, 100049, China
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhiqiang Wang
- School of Science, China University of Geosciences, Beijing, 100049, China
| | - Yawen Pan
- School of Science, China University of Geosciences, Beijing, 100049, China
| | - Shuang Zhu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Beijing, 100049, China
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhanjun Gu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Beijing, 100049, China
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
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7
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Shi N, Yan X, Adeleye AS, Zhang X, Zhou D, Zhao L. Effects of WS 2 Nanosheets on N 2-fixing Cyanobacteria: ROS overproduction, cell membrane damage, and cell metabolic reprogramming. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 849:157706. [PMID: 35908696 DOI: 10.1016/j.scitotenv.2022.157706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 07/23/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
The ecotoxicity of tungsten disulfide (WS2) nanomaterials remains unclear so far. Here, the toxicity of WS2 nanosheets on N2-fixing cyanobacteria (Nostoc sphaeroides) was evaluated. Specifically, Nostoc were cultivated in media spiked with different concentrations of WS2 nanosheets (0, 0.05, 0.1 and 0.5 mg/L) for 96 h. Relative to unexposed cells, WS2 nanosheets at 0.5 mg/L significantly decreased cell density, content of total sugar and protein by 10.9 %, 0.43 %, and 6.1 %, respectively. Gas chromatography-mass spectrometry (GC-MS)-based metabolomics revealed that WS2 nanosheets exposure altered the metabolite profile of Nostoc in a dose-dependent manner. Energy metabolism related pathways, including the Calvin-Benson-Bassham (CBB) cycle and tricarboxylic acid (TCA) cycle, were significantly inhibited. In addition, WS2 nanosheets exposure resulted in downregulation (20-40 %) of S-containing amino acids (cystine, methionine, and cysteine) and sulfuric acid. Additionally, fatty acids and antioxidant-related compounds (formononetin, catechin, epigallocatechin, dehydroascorbic acid, and alpha-tocopherol) in Nostoc were drastically decreased by 4-50 % upon exposure to WS2 nanosheets, which implies oxidative stress induced by the nanomaterials. Biochemical assays for reactive oxygen species (ROS) and malondialdehyde (MDA) confirmed that WS2 nanosheets triggered ROS overproduction and induced lipid peroxidation. Taken together, WS2 exposure perturbed carbon (C), nitrogen (N), and sulfate (S) metabolism of Nostoc, which may influence C, N, and S cycling, given the important roles of cyanobacteria in these processes. These results highlight the need for caution in the application and environmental release of WS2 nanomaterials to prevent unintended environmental impacts due to their potential ecotoxicity.
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Affiliation(s)
- Nibin Shi
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Xin Yan
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Adeyemi S Adeleye
- Department of Civil and Environmental Engineering, University of California, Irvine, CA 92697-2175, USA
| | - Xuxiang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Dongmei Zhou
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Lijuan Zhao
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China.
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Investigation of the Crystallization Kinetics and Melting Behaviour of Polymer Blend Nanocomposites Based on Poly(L-Lactic Acid), Nylon 11 and TMDCs WS2. Polymers (Basel) 2022; 14:polym14132692. [PMID: 35808736 PMCID: PMC9269272 DOI: 10.3390/polym14132692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/21/2022] [Accepted: 06/28/2022] [Indexed: 12/04/2022] Open
Abstract
The aim of this work was to study the crystallization kinetics and melting behaviour of polymer blend nanocomposites based on poly (L-lactic acid) (PLLA), nylon 11 and tungsten disulfide nanotubes (INT-WS2), which are layered transition metal dichalcogenides (TMDCs), using non-isothermal differential scanning calorimetry (DSC). Blends containing different nylon 11 contents ranging from 20 to 80 wt.% with or without INT-WS2 were prepared by melt mixing. Evaluation of their morphology with high-resolution SEM imaging proved that the incorporation of inorganic nanotubes into the immiscible PLLA/nylon 11 mixtures led to an improvement in the dispersibility of the nylon 11 phase, a reduction in its average domain size and, consequently, an increase in its interfacial area. The crystallization temperatures of these PLLA/nylon 11-INT blends were influenced by the cooling rate and composition. In particular, the DSC results appear to demonstrate that the 1D-TMDCs WS2 within the PLLA/nylon 11-INT blend nanocomposites initiated nucleation in both polymeric components, with the effect being more pronounced for PLLA. Moreover, the nucleation activity and activation energy were calculated to support these findings. The nucleation effect of INT-WS2, which influences the melting behaviour of PLLA, is highly important, particularly when evaluating polymer crystallinity. This study opens up new perspectives for the development of advanced PLA-based nanomaterials that show great potential for ecological and biomedical applications.
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Tungsten disulfide nanotubes enhance flow-induced crystallization and radio-opacity of polylactide without adversely affecting in vitro toxicity. Acta Biomater 2022; 138:313-326. [PMID: 34798318 PMCID: PMC9505057 DOI: 10.1016/j.actbio.2021.11.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 10/17/2021] [Accepted: 11/04/2021] [Indexed: 01/17/2023]
Abstract
Treatment of vascular disease, from peripheral ischemia to coronary heart disease (CHD), is poised for transformation with the introduction of transient implants designed to "scaffold" regeneration of blood vessels and ultimately leave nothing behind. Improved materials could expand the use of these devices. Here, we examine one of the leading polymers for bioresorbable scaffolds (BRS), polylactide (PLA), as the matrix of nanocomposites with tungsten disulfide (WS2) nanotubes (WSNT), which may provide mechanical reinforcement and enhance radio-opacity. We evaluate in vitro cytotoxicity using vascular cells, flow-induced crystallization and radio-opacity of PLA-WSNT nanocomposites at low WSNT concentration. A small amount of WSNT (0.1 wt%) can effectively promote oriented crystallization of PLA without compromising molecular weight. And radio-opacity improves significantly: as little as 0.5 to 1 wt% WSNT doubles the radio-opacity of PLA-WSNT relative to PLA at 17 keV. The results suggest that a single component, WSNT, has the potential to increase the strength of BRS to enable thinner devices and increase radio-opacity to improve intraoperative visualization. The in vitro toxicity results indicate that PLA-WSNT nanocomposites are worthy of investigation in vivo. Although substantial further preclinical studies are needed, PLA-WSNT nanocomposites may provide a complement of material properties that may improve BRS and expand the range of lesions that can be treated using transient implants. STATEMENT OF SIGNIFICANCE: Bioresorbable Scaffolds (BRSs) support regeneration of arteries without permanent mechanical constraint. Poly-L-lactide (PLLA) is the structural material of the first approved BRS for coronary heart disease (ABSORB BVS), withdrawn due to adverse events in years 1-3. Here, we examine tungsten disulfide (WS2) nanotubes (WSNT) in PLA to address two contributors to early complications: (1) reinforce PLLA (enable thinner BRS), and (2) increase radiopacity (provide intraoperative visibility). For BRS, it is significant that WSNT disperse, remain dispersed, reduce friction and improve mechanical properties without additional chemicals or surface modifications. Like WS2 nanospheres, bare WSNT and PLA-WSNT nanocomposites show low cytotoxicity in vitro. PLA-WSNT show enhanced flow-induced crystallization relative to PLA, motivating future study of the processing behavior and strength of these materials.
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Golan O, Shalom H, Kaplan-Ashiri I, Cohen SR, Feldman Y, Pinkas I, Ofek Almog R, Zak A, Tenne R. Poly(L-lactic acid) Reinforced with Hydroxyapatite and Tungsten Disulfide Nanotubes. Polymers (Basel) 2021; 13:3851. [PMID: 34771407 PMCID: PMC8587543 DOI: 10.3390/polym13213851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/02/2021] [Accepted: 11/04/2021] [Indexed: 11/17/2022] Open
Abstract
Poly(L-lactic acid) (PLLA) is a biocompatible, biodegradable, and semi-crystalline polymer with numerous applications including food packaging, medical implants, stents, tissue engineering scaffolds, etc. Hydroxyapatite (HA) is the major component of natural bone. Conceptually, combining PLLA and HA could produce a bioceramic suitable for implants and bone repair. However, this nanocomposite suffers from poor mechanical behavior under tensile strain. In this study, films of PLLA and HA were prepared with small amounts of nontoxic WS2 nanotubes (INT-WS2). The structural aspects of the films were investigated via electron microscopy, X-ray diffraction, Raman microscopy, and infrared absorption spectroscopy. The mechanical properties were evaluated via tensile measurements, micro-hardness tests, and nanoindentation. The thermal properties were investigated via differential scanning calorimetry. The composite films exhibited improved mechanical and thermal properties compared to the films prepared from the PLLA and HA alone, which is advantageous for medical applications.
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Affiliation(s)
- Ofek Golan
- Department of Materials Engineering, Azrieli College of Engineering, Jerusalem 9103501, Israel; (O.G.); (R.O.A.)
- Department of Molecular Chemistry and Materials Science, Weizmann Institute, Rehovot 76100, Israel;
| | - Hila Shalom
- Department of Molecular Chemistry and Materials Science, Weizmann Institute, Rehovot 76100, Israel;
| | - Ifat Kaplan-Ashiri
- Chemical Research Support Department, Weizmann Institute, Rehovot 76100, Israel; (I.K.-A.); (S.R.C.); (Y.F.); (I.P.)
| | - Sidney R. Cohen
- Chemical Research Support Department, Weizmann Institute, Rehovot 76100, Israel; (I.K.-A.); (S.R.C.); (Y.F.); (I.P.)
| | - Yishay Feldman
- Chemical Research Support Department, Weizmann Institute, Rehovot 76100, Israel; (I.K.-A.); (S.R.C.); (Y.F.); (I.P.)
| | - Iddo Pinkas
- Chemical Research Support Department, Weizmann Institute, Rehovot 76100, Israel; (I.K.-A.); (S.R.C.); (Y.F.); (I.P.)
| | - Rakefet Ofek Almog
- Department of Materials Engineering, Azrieli College of Engineering, Jerusalem 9103501, Israel; (O.G.); (R.O.A.)
| | - Alla Zak
- Department of Sciences, Holon Institute of Technology, Holon 58102, Israel;
| | - Reshef Tenne
- Department of Molecular Chemistry and Materials Science, Weizmann Institute, Rehovot 76100, Israel;
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11
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Levin T, Lampel Y, Savyon G, Levy E, Harel Y, Elias Y, Sinvani M, Nachman I, Lellouche JP. Innovative functional polymerization of pyrrole-N-propionic acid onto WS 2 nanotubes using cerium-doped maghemite nanoparticles for photothermal therapy. Sci Rep 2021; 11:18883. [PMID: 34556680 PMCID: PMC8460730 DOI: 10.1038/s41598-021-97052-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 07/30/2021] [Indexed: 11/15/2022] Open
Abstract
Tungsten disulfide nanotubes (WS2-NTs) were found to be very active for photothermal therapy. However, their lack of stability in aqueous solutions inhibits their use in many applications, especially in biomedicine. Few attempts were made to chemically functionalize the surface of the NTs to improve their dispersability. Here, we present a new polymerization method using cerium-doped maghemite nanoparticles (CM-NPs) as magnetic nanosized linkers between the WS2-NT surface and pyrrole-N-propionic acid monomers, which allow in situ polymerization onto the composite surface. This unique composite is magnetic, and contains two active entities for photothermal therapy—WS2 and the polypyrrole. The photothermal activity of the composite was tested at a wavelength of 808 nm, and significant thermal activity was observed. Moreover, the polycarboxylated polymeric coating of the NTs enables effective linkage of additional molecules or drugs via covalent bonding. In addition, a new method was established for large-scale synthesis of CM-NPs and WS2-NT-CM composites.
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Affiliation(s)
- Tzuriel Levin
- Institute of Nanotechnology and Advanced Materials and Department of Chemistry, Faculty of Exact Sciences, Bar-Ilan University, 5290002, Ramat Gan, Israel
| | - Yakir Lampel
- Institute of Nanotechnology and Advanced Materials and Department of Chemistry, Faculty of Exact Sciences, Bar-Ilan University, 5290002, Ramat Gan, Israel
| | - Gaya Savyon
- School of Neurobiology, Biochemistry and Biophysics, George S. Wise Faculty of Life Sciences, Tel Aviv University, 6997801, Tel Aviv, Israel
| | - Esthy Levy
- Institute of Nanotechnology and Advanced Materials and Department of Chemistry, Faculty of Exact Sciences, Bar-Ilan University, 5290002, Ramat Gan, Israel
| | - Yifat Harel
- Institute of Nanotechnology and Advanced Materials and Department of Chemistry, Faculty of Exact Sciences, Bar-Ilan University, 5290002, Ramat Gan, Israel
| | - Yuval Elias
- Institute of Nanotechnology and Advanced Materials and Department of Chemistry, Faculty of Exact Sciences, Bar-Ilan University, 5290002, Ramat Gan, Israel
| | - Moshe Sinvani
- Faculty of Engineering and the Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, 5290002, Ramat Gan, Israel
| | - Iftach Nachman
- School of Neurobiology, Biochemistry and Biophysics, George S. Wise Faculty of Life Sciences, Tel Aviv University, 6997801, Tel Aviv, Israel
| | - Jean-Paul Lellouche
- Institute of Nanotechnology and Advanced Materials and Department of Chemistry, Faculty of Exact Sciences, Bar-Ilan University, 5290002, Ramat Gan, Israel.
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12
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Wu G, Wei P, Chen X, Zhang Z, Jin Z, Liu J, Liu L. Less is more: biological effects of NiSe 2/rGO nanocomposites with low dose provide new insight for risk assessment. JOURNAL OF HAZARDOUS MATERIALS 2021; 415:125605. [PMID: 33735765 DOI: 10.1016/j.jhazmat.2021.125605] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 02/24/2021] [Accepted: 03/04/2021] [Indexed: 06/12/2023]
Abstract
Nickel selenide nanomaterials (NiSe2 NMs) with different vacancies demonstrated high catalytic activity as electrocatalyst in oxygen evolution reaction. As the growing needs of the industrial applications in electrocatalyst, the increased occupational exposure and environmental releasing of NMs would be unavoidable. While, much efforts have been made to evaluate the ecological safety of such engineered NMs at unrealistically high concentrations, failed to provide the comprehensively guideline for exposure thresholds. To supplement the current knowledge gap, we testified the cytotoxicity of NiSe2/rGO nanocomposites with different surface defects under more realistic exposure mode. Compared with the short-term exposure and repetitive exposure, rat lung macrophages exhibited the augmented oxidative stress, dysfunction of mitochondria, damage of DNA and disorder of calcium homeostasis under the long-term NiSe2/rGO exposure. Noteworthily, no significant differences could be found between the NiSe2/rGO with different surface defects, indicated that the defect type of NMs were not the accurate predictor for real risk assessment. Collectively, the study provided the real potential toxic effects and exposure thresholds of NMs that might be highly possible industrial produced, and appealed the new insight for risk assessments of engineered NMs under the long-term exposure, which exhibited difference from the traditional evaluation of short-term and repetitive exposure.
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Affiliation(s)
- Guizhu Wu
- College of Environmental Science and Engineering, Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Rd., Tianjin 300350, PR China; Institute of Environment and Ecology, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Pengkun Wei
- College of Environmental Science and Engineering, Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Rd., Tianjin 300350, PR China
| | - Xue Chen
- College of Environmental Science and Engineering, Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Rd., Tianjin 300350, PR China
| | - Ze Zhang
- College of Environmental Science and Engineering, Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Rd., Tianjin 300350, PR China
| | - Zhengguo Jin
- College of Environmental Science and Engineering, Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Rd., Tianjin 300350, PR China
| | - Jiandang Liu
- State Key Laboratory of Particle Detection and Electronics, University of Science & Technology of China, Hefei, Anhui 230026, PR China.
| | - Lu Liu
- College of Environmental Science and Engineering, Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Rd., Tianjin 300350, PR China.
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13
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Li Y, Tang H, Zhu H, Kakinen A, Wang D, Andrikopoulos N, Sun Y, Nandakumar A, Kwak E, Davis TP, Leong DT, Ding F, Ke PC. Ultrasmall Molybdenum Disulfide Quantum Dots Cage Alzheimer's Amyloid Beta to Restore Membrane Fluidity. ACS APPLIED MATERIALS & INTERFACES 2021; 13:29936-29948. [PMID: 34143617 PMCID: PMC8251662 DOI: 10.1021/acsami.1c06478] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Alzheimer's disease (AD) is a major cause of dementia characterized by the overexpression of transmembrane amyloid precursor protein and its neurotoxic byproduct amyloid beta (Aβ). A small peptide of considerable hydrophobicity, Aβ is aggregation prone catalyzed by the presence of cell membranes, among other environmental factors. Accordingly, current AD mitigation strategies often aim at breaking down the Aβ-membrane communication, yet no data is available concerning the cohesive interplay of the three key entities of the cell membrane, Aβ, and its inhibitor. Using a lipophilic Laurdan dye and confocal fluorescence microscopy, we observed cell membrane perturbation and actin reorganization induced by Aβ oligomers but not by Aβ monomers or amyloid fibrils. We further revealed recovery of membrane fluidity by ultrasmall MoS2 quantum dots, also shown in this study as a potent inhibitor of Aβ amyloid aggregation. Using discrete molecular dynamics simulations, we uncovered the binding of MoS2 and Aβ monomers as mediated by hydrophilic interactions between the quantum dots and the peptide N-terminus. In contrast, Aβ oligomers and fibrils were surface-coated by the ultrasmall quantum dots in distinct testudo-like, reverse protein-corona formations to prevent their further association with the cell membrane and adverse effects downstream. This study offers a crucial new insight and a viable strategy for regulating the amyloid aggregation and membrane-axis of AD pathology with multifunctional nanomedicine.
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Affiliation(s)
- Yuhuan Li
- Liver Cancer Institute, Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Fudan University, Shanghai, 200032, China
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Huayuan Tang
- Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, United States
| | - Houjuan Zhu
- National University of Singapore, Department of Chemical and Biomolecular Engineering, 4 Engineering Drive 4, Singapore 117585, Singapore
| | - Aleksandr Kakinen
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane Qld 4072, Australia
| | - Di Wang
- School of Life Sciences, Jilin University, Changchun 130012, China
| | - Nicholas Andrikopoulos
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Yunxiang Sun
- School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Aparna Nandakumar
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Eunbi Kwak
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Thomas P. Davis
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane Qld 4072, Australia
| | - David Tai Leong
- National University of Singapore, Department of Chemical and Biomolecular Engineering, 4 Engineering Drive 4, Singapore 117585, Singapore
| | - Feng Ding
- Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, United States
| | - Pu Chun Ke
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane Qld 4072, Australia
- The GBA National Institute for Nanotechnology Innovation, 136 Kaiyuan Avenue, Guangzhou, 510700, China
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14
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Nanocomposite Materials Based on TMDCs WS 2 Modified Poly(l-Lactic Acid)/Poly(Vinylidene Fluoride) Polymer Blends. Polymers (Basel) 2021; 13:polym13132179. [PMID: 34209153 PMCID: PMC8272141 DOI: 10.3390/polym13132179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 06/27/2021] [Accepted: 06/28/2021] [Indexed: 11/16/2022] Open
Abstract
Novel multifunctional biopolymer blend nanocomposites composed of poly(vinylidene fluoride)(PVDF) and tungsten disulfide nanotubes (INT-WS2) that are layered transition metal dichalcogenides (TMDCs) were easily prepared by applying an economical, scalable, and versatile melt processing route. Furthermore, their synergistic effect to enhance the properties of poly(L-lactic acid) (PLLA) matrix was investigated. From morphological analysis, it was shown that the incorporation of 1D (INT)-WS2 into the immiscible PLLA/PVDF mixtures (weight ratios: 80/20, 60/40, 40/60, and 20/80) led to an improvement in the dispersibility of the PVDF phase, a reduction in its average domain size, and consequently a larger interfacial area. In addition, the nanoparticles INT-WS2 can act as effective nucleating agents and reinforcing fillers in PLLA/PVDF blends, and as such, greatly improve their thermal and dynamic-mechanical properties. The improvements are more pronounced in the ternary blend nanocomposites with the lowest PVDF content, likely due to a synergistic effect of both highly crystalline PVDF and 1D-TMDCs nano-additives on the matrix performance. Considering the promising properties of the developed materials, the inexpensive synthetic process, and the extraordinary properties of environmentally friendly and biocompatibe 1D-TMDCs WS2, this work may open up opportunities to produce new PLLA/PVDF hybrid nanocomposites that show great potential for biomedical applications.
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15
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Shaw ZL, Kuriakose S, Cheeseman S, Dickey MD, Genzer J, Christofferson AJ, Crawford RJ, McConville CF, Chapman J, Truong VK, Elbourne A, Walia S. Antipathogenic properties and applications of low-dimensional materials. Nat Commun 2021; 12:3897. [PMID: 34162835 PMCID: PMC8222221 DOI: 10.1038/s41467-021-23278-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 04/14/2021] [Indexed: 01/31/2023] Open
Abstract
A major health concern of the 21st century is the rise of multi-drug resistant pathogenic microbial species. Recent technological advancements have led to considerable opportunities for low-dimensional materials (LDMs) as potential next-generation antimicrobials. LDMs have demonstrated antimicrobial behaviour towards a variety of pathogenic bacterial and fungal cells, due to their unique physicochemical properties. This review provides a critical assessment of current LDMs that have exhibited antimicrobial behaviour and their mechanism of action. Future design considerations and constraints in deploying LDMs for antimicrobial applications are discussed. It is envisioned that this review will guide future design parameters for LDM-based antimicrobial applications.
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Affiliation(s)
- Z L Shaw
- School of Engineering, RMIT University, Melbourne, Australia
| | - Sruthi Kuriakose
- School of Engineering, RMIT University, Melbourne, Australia
- Functional Materials and Microsystems Research Group, MicroNano Research Facility, RMIT University, Melbourne, Australia
| | | | - Michael D Dickey
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, USA
| | - Jan Genzer
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, USA
| | | | | | - Chris F McConville
- Institute for Frontier Materials, Deakin University, Geelong, Victoria, 3220, Australia
| | - James Chapman
- School of Science, RMIT University, Melbourne, VIC, Australia
| | - Vi Khanh Truong
- School of Science, RMIT University, Melbourne, VIC, Australia
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, USA
| | - Aaron Elbourne
- School of Science, RMIT University, Melbourne, VIC, Australia.
| | - Sumeet Walia
- School of Engineering, RMIT University, Melbourne, Australia.
- Functional Materials and Microsystems Research Group, MicroNano Research Facility, RMIT University, Melbourne, Australia.
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16
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Domi B, Bhorkar K, Rumbo C, Sygellou L, Martin SM, Quesada R, Yannopoulos SN, Tamayo-Ramos JA. Toxicological assessment of commercial monolayer tungsten disulfide nanomaterials aqueous suspensions using human A549 cells and the model fungus Saccharomyces cerevisiae. CHEMOSPHERE 2021; 272:129603. [PMID: 33485043 DOI: 10.1016/j.chemosphere.2021.129603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/23/2020] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
The utilization of tungsten disulfide (WS2) nanomaterials in distinct applications is raising due to their unique physico-chemical properties, such as low friction coefficient and high strength, which highlights the necessity to study their potential toxicological effects, due to the potential increase of environmental and human exposure. The aim of this work was to analyze commercially available aqueous dispersions of monolayer tungsten disulfide (2D WS2) nanomaterials with distinct lateral size employing a portfolio of physico-chemical and toxicological evaluations. The structure and stoichiometry of monolayer tungsten disulfide (WS2-ACS-M) and nano size monolayer tungsten disulfide (WS2-ACS-N) was analyzed by Raman spectroscopy, whereas a more quantitative approach to study the nature of formed oxidized species was undertaken employing X-ray photoelectron spectroscopy. Adenocarcinomic human alveolar basal epithelial cells (A549 cells) and the ecotoxicology model Saccharomyces cerevisiae were selected as unicellular eukaryotic systems to assess the cytotoxicity of the nanomaterials. Cell viability and reactive oxygen species (ROS) determinations demonstrated different toxicity levels depending on the cellular model used. While both 2D WS2 suspensions showed very low toxicity towards the A549 cells, a comparable concentration (160 mg L-1) reduced the viability of yeast cells. The toxicity of a nano size 2D WS2 commercialized in dry form from the same provider was also assessed, showing ability to reduce yeast cells viability as well. Overall, the presented data reveal the physico-chemical properties and the potential toxicity of commercial 2D WS2 aqueous suspensions when interacting with distinct eukaryotic organisms, showing differences in function of the biological system exposed.
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Affiliation(s)
- Brixhilda Domi
- International Research Centre in Critical Raw Materials-ICCRAM, Universidad de Burgos, Plaza Misael Banuelos S/n, 09001, Burgos, Spain
| | - Kapil Bhorkar
- Foundation for Research and Technology Hellas, Institute of Chemical Engineering Sciences (FORTH/ICE-HT), P.O. Box 1414, GR-26504, Rio-Patras, Greece; Univ Rennes, CNRS, ISCR, UMR 6226, F-35000, Rennes, France
| | - Carlos Rumbo
- International Research Centre in Critical Raw Materials-ICCRAM, Universidad de Burgos, Plaza Misael Banuelos S/n, 09001, Burgos, Spain
| | - Labrini Sygellou
- Foundation for Research and Technology Hellas, Institute of Chemical Engineering Sciences (FORTH/ICE-HT), P.O. Box 1414, GR-26504, Rio-Patras, Greece
| | - Sonia Martel Martin
- International Research Centre in Critical Raw Materials-ICCRAM, Universidad de Burgos, Plaza Misael Banuelos S/n, 09001, Burgos, Spain
| | - Roberto Quesada
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, 09001, Burgos, Spain
| | - Spyros N Yannopoulos
- Foundation for Research and Technology Hellas, Institute of Chemical Engineering Sciences (FORTH/ICE-HT), P.O. Box 1414, GR-26504, Rio-Patras, Greece
| | - Juan Antonio Tamayo-Ramos
- International Research Centre in Critical Raw Materials-ICCRAM, Universidad de Burgos, Plaza Misael Banuelos S/n, 09001, Burgos, Spain.
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17
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Interaction of Poly L-Lactide and Tungsten Disulfide Nanotubes Studied by in Situ X-ray Scattering during Expansion of PLLA/WS 2NT Nanocomposite Tubes. Polymers (Basel) 2021; 13:polym13111764. [PMID: 34072208 PMCID: PMC8198810 DOI: 10.3390/polym13111764] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/19/2021] [Accepted: 05/24/2021] [Indexed: 11/27/2022] Open
Abstract
In situ synchrotron X-ray scattering was used to reveal the transient microstructure of poly(L-lactide) (PLLA)/tungsten disulfide inorganic nanotubes (WS2NTs) nanocomposites. This microstructure is formed during the blow molding process (“tube expansion”) of an extruded polymer tube, an important step in the manufacturing of PLLA-based bioresorbable vascular scaffolds (BVS). A fundamental understanding of how such a microstructure develops during processing is relevant to two unmet needs in PLLA-based BVS: increasing strength to enable thinner devices and improving radiopacity to enable imaging during implantation. Here, we focus on how the flow generated during tube expansion affects the orientation of the WS2NTs and the formation of polymer crystals by comparing neat PLLA and nanocomposite tubes under different expansion conditions. Surprisingly, the WS2NTs remain oriented along the extrusion direction despite significant strain in the transverse direction while the PLLA crystals (c-axis) form along the circumferential direction of the tube. Although WS2NTs promote the nucleation of PLLA crystals in nanocomposite tubes, crystallization proceeds with largely the same orientation as in neat PLLA tubes. We suggest that the reason for the unusual independence of the orientations of the nanotubes and polymer crystals stems from the favorable interaction between PLLA and WS2NTs. This favorable interaction leads WS2NTs to disperse well in PLLA and strongly orient along the axis of the PLLA tube during extrusion. As a consequence, the nanotubes are aligned orthogonally to the circumferential stretching direction, which appears to decouple the orientations of PLLA crystals and WS2NTs.
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18
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Bhardwaj A, Sharma A, Suryanarayana P. Torsional moduli of transition metal dichalcogenide nanotubes from first principles. NANOTECHNOLOGY 2021; 32:28LT02. [PMID: 33827066 DOI: 10.1088/1361-6528/abf59c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 04/07/2021] [Indexed: 06/12/2023]
Abstract
We calculate the torsional moduli of single-walled transition metal dichalcogenide (TMD) nanotubes usingab initiodensity functional theory (DFT). Specifically, considering forty-five select TMD nanotubes, we perform symmetry-adapted DFT calculations to calculate the torsional moduli for the armchair and zigzag variants of these materials in the low-twist regime and at practically relevant diameters. We find that the torsional moduli follow the trend: MS2> MSe2> MTe2. In addition, the moduli display a power law dependence on diameter, with the scaling generally close to cubic, as predicted by the isotropic elastic continuum model. In particular, the shear moduli so computed are in good agreement with those predicted by the isotropic relation in terms of the Young's modulus and Poisson's ratio, both of which are also calculated using symmetry-adapted DFT. Finally, we develop a linear regression model for the torsional moduli of TMD nanotubes based on the nature/characteristics of the metal-chalcogen bond, and show that it is capable of making reasonably accurate predictions.
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Affiliation(s)
- Arpit Bhardwaj
- College of Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States of America
| | - Abhiraj Sharma
- College of Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States of America
| | - Phanish Suryanarayana
- College of Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States of America
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19
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Zhang Y, Zhang G, Wang G, Wu L, Monteiro-Riviere NA, Li Y. The synergistic strategies for the immuno-oncotherapy with photothermal nanoagents. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2021; 13:e1717. [PMID: 33825343 DOI: 10.1002/wnan.1717] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 01/12/2021] [Accepted: 03/09/2021] [Indexed: 12/13/2022]
Abstract
Immuno-oncotherapy has shown great promise for the cure of late-stage and metastatic cancer. Great efforts have tried to improve the overall response rate (ORR) and to reduce the immune-related adverse events (irAEs). Antigen presentation, T cell activation and killing are interlocking and distinct steps to initiate effective anti-tumor immune responses. Aiming to overcome the tumor immune evasion whose mechanisms include limited release of neoantigen, suppressed infiltration of antigen-presenting cells (APCs) and T cells, and the expression of immune checkpoints (ICPs), combinational therapeutic strategies have shown great potential by activating the anti-tumor immune responses together with deactivating immunosuppressive conditions simultaneously. In this direction, photothermal therapy (PTT) has attracted attention due to the efficient ablation of tumor cells, of which the released immunogenic tumor debris can activate host immune responses. The combination of immunoadjuvants and/or ICP inhibitors can boost the anti-tumor immune responses, realizing PTT-synergized immuno-oncotherapy. In this regard, numerous multifunctional nanomaterials have been designed with integration of photothermal and immuno-oncotherapeutic agents into one package via well-designed surface modification and functionalization. This review summarizes the recent studies on the synergistic strategies for the immuno-oncotherapy based on photothermal nanoagents and the mechanisms that trigger the systemic anti-tumor immune responses and PTT-synergized immuno-oncotherapy. This article is categorized under: Therapeutic Approaches and Drug Discovery > Nanomedicine for Oncologic Disease.
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Affiliation(s)
- Yuqian Zhang
- Laboratory of Immunology and Nanomedicine, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Guofang Zhang
- Laboratory of Immunology and Nanomedicine, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Guocheng Wang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Lidong Wu
- Key Laboratory of Control of Quality and Safety for Aquatic Products, Chinese Academy of Fishery Sciences, Beijing, China
| | - Nancy A Monteiro-Riviere
- Nanotechnology Innovation Center of Kansas State, Kansas State University, Manhattan, Kansas, USA
| | - Yang Li
- Laboratory of Immunology and Nanomedicine, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
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20
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Sobańska Z, Domeradzka-Gajda K, Szparaga M, Grobelny J, Tomaszewska E, Ranoszek-Soliwoda K, Celichowski G, Zapór L, Kowalczyk K, Stępnik M. Comparative analysis of biological effects of molybdenum(IV) sulfide in the form of nano- and microparticles on human hepatoma HepG2 cells grown in 2D and 3D models. Toxicol In Vitro 2020; 68:104931. [PMID: 32640262 DOI: 10.1016/j.tiv.2020.104931] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 06/18/2020] [Accepted: 07/01/2020] [Indexed: 10/23/2022]
Abstract
Significance of MoS2 nanoparticles as a lubricant or drug carriers indicates the need to assess their safety. In the study we analyzed the effects of MoS2 nano- and microparticles and their internalization in vitro, using 2D and 3D culture models of human hepatoma HepG2 cell line. MoS2 micro- and nanoparticles were characterized with high resolution electron microscopy (HR-SEM), X-ray diffraction (XRD) and Energy Dispersive X-Ray Spectroscopy (EDS). The cells were exposed to a range of concentrations of the nano-and microparticles suspensions (maximum of 250 μg/mL) for 72 h. Cell viability was assessed using WST-1 reduction test and LDH release assay. Particle internalization was analyzed using scanning transmission electron microscopy (STEM). The nanoparticles were internalized into the 2D and 3D cultured cells, in spheroids more efficiently into the outer layer. For microparticles mainly particles of less than 1 μm in diameter underwent internalization. This process, however, did not affect cell viability as measured with the WST-1 and LDH assays. STEM observation showed well preserved integrity of the cell membrane and no apparent cytotoxic effect. Although the particles seemed to be safely sequestered in vacuoles or the cytoplasm, their fate and eventual biological effects are not certain and deserve further studies.
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Affiliation(s)
- Z Sobańska
- Toxicology and Carcinogenesis Dept., Nofer Institute of Occupational Medicine, Sw. Teresy 8 St, Łódź, Poland
| | - K Domeradzka-Gajda
- Toxicology and Carcinogenesis Dept., Nofer Institute of Occupational Medicine, Sw. Teresy 8 St, Łódź, Poland
| | - M Szparaga
- Toxicology and Carcinogenesis Dept., Nofer Institute of Occupational Medicine, Sw. Teresy 8 St, Łódź, Poland
| | - J Grobelny
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Łódź, 163 Pomorska St, Łódź 90-236, Poland
| | - E Tomaszewska
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Łódź, 163 Pomorska St, Łódź 90-236, Poland
| | - K Ranoszek-Soliwoda
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Łódź, 163 Pomorska St, Łódź 90-236, Poland
| | - G Celichowski
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Łódź, 163 Pomorska St, Łódź 90-236, Poland
| | - L Zapór
- Central Institute for Labour Protection-National Research Institute, Czerniakowska 16 St, Warsaw, Poland
| | - K Kowalczyk
- Toxicology and Carcinogenesis Dept., Nofer Institute of Occupational Medicine, Sw. Teresy 8 St, Łódź, Poland
| | - M Stępnik
- Toxicology and Carcinogenesis Dept., Nofer Institute of Occupational Medicine, Sw. Teresy 8 St, Łódź, Poland.
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21
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Shalom H, Kapishnikov S, Brumfeld V, Naveh N, Tenne R, Lachman N. Strong, tough and bio-degradable polymer-based 3D-ink for fused filament fabrication (FFF) using WS 2 nanotubes. Sci Rep 2020; 10:8892. [PMID: 32483268 PMCID: PMC7264276 DOI: 10.1038/s41598-020-65861-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 04/17/2020] [Indexed: 11/17/2022] Open
Abstract
WS2 inorganic nanotubes (WS2-NT) have been incorporated into Polylactic Acid (PLA) by melt mixing to create a bio-degradable, mechanically reinforced nanocomposite filament. The filament was then processed by Fused Filament Fabrication (FFF) 3D-printer, and the morphology and characteristics before and after printing were compared. We found that addition of WS2-NT to PLA by extrusion mixing increases the elastic modulus, yield strength and strain-at-failure by 20%, 23% and 35%, respectively. Moreover, we found that the printing process itself improves the dispersion of WS2-NT within the PLA filament, and does not require changing of the printing parameters compared to pure PLA. The results demonstrate the advantage of WS2-NT as reinforcement specifically in 3D-printable polymers, over more traditional nano-reinforcements such as graphene and carbon nanotubes. WS2-NT based 3D-printable nanocomposites can be used for variety of applications from custom-made biodegradable scaffold of soft implants such as cartilage-based organs and biodegradable soft stents to the more general easy-to-apply nano-reinforced polymers.
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Affiliation(s)
- Hila Shalom
- Department of Materials Science and Engineering, Faculty of Engineering, Tel-Aviv University, Ramat Aviv, Tel Aviv, 6997801, Israel
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Sergey Kapishnikov
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Vlad Brumfeld
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Naum Naveh
- Polymers and Plastics Engineering Department, Shenkar College of Engineering, Design and Art, Ramat-Gan, Israel
| | - Reshef Tenne
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Noa Lachman
- Department of Materials Science and Engineering, Faculty of Engineering, Tel-Aviv University, Ramat Aviv, Tel Aviv, 6997801, Israel.
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22
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Deng L, Pan X, Zhang Y, Sun S, Lv L, Gao L, Ma P, Ai H, Zhou Q, Wang X, Zhan L. Immunostimulatory Potential of MoS 2 Nanosheets: Enhancing Dendritic Cell Maturation, Migration and T Cell Elicitation. Int J Nanomedicine 2020; 15:2971-2986. [PMID: 32431496 PMCID: PMC7197944 DOI: 10.2147/ijn.s243537] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 04/10/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Due to their extraordinary physical and chemical properties, MoS2 nanosheets (MSNs) are becoming more widely used in nanomedicine. However, their influence on immune systems remains unclear. MATERIALS AND METHODS Two few-layered MSNs at sizes of 100-250 nm (S-MSNs) and 400-500 nm (L-MSNs) were used in this study. Bone marrow-derived dendritic cells (DCs) were exposed to both MSNs at different doses (0, 8, 16, 32, 64, 128 µg/mL) for 48 h and subjected to analyses of surface marker expression, cytokine secretion, lymphoid homing and in vivo T cell priming. RESULTS Different-sized MSNs of all doses did not affect the viability of DCs. The expression of CD40, CD80, CD86 and CCR7 was significantly higher on both S-MSN- and L-MSN-treated DCs at a dose of 128 μg/mL. As the dose of MSN increased, the secretion of IL-12p70 remained unchanged, the secretion of IL-1β decreased, and the production of TNF-α increased. A significant increase in IL-6 was observed in the 128 µg/mL L-MSN-treated DCs. In particular, MSN treatment dramatically improved the ex vivo movement and in vivo homing ability of both the local resident and blood circulating DCs. Furthermore, the cytoskeleton rearrangement regulated by ROS elevation was responsible for the enhanced homing ability of the MSNs. More robust CD4+ and CD8+ T cell proliferation and activation (characterized by high expression of CD107a, CD69 and ICOS) was observed in mice vaccinated with MSN-treated DCs. Importantly, exposure to MSNs did not interrupt LPS-induced DC activation, homing and T cell priming. CONCLUSION Few-layered MSNs ranging from 100 to 500 nm in size could play an immunostimulatory role in enhancing DC maturation, migration and T cell elicitation, making them a good candidate for vaccine adjuvants. Investigation of this study will not only expand the applications of MSNs and other new transition metal dichalcogenides (TMDCs) but also shed light on the in vivo immune-risk evaluation of MSN-based nanomaterials.
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Affiliation(s)
- Lei Deng
- Department of Emerging Transfusion Technology, Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Beijing, People’s Republic of China
- Department of Hematology, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, People’s Republic of China
| | - Xiaoli Pan
- Department of Emerging Transfusion Technology, Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Beijing, People’s Republic of China
| | - Yulong Zhang
- Department of Emerging Transfusion Technology, Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Beijing, People’s Republic of China
| | - Sujing Sun
- Department of Emerging Transfusion Technology, Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Beijing, People’s Republic of China
| | - Liping Lv
- Department of Emerging Transfusion Technology, Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Beijing, People’s Republic of China
| | - Lei Gao
- Department of Emerging Transfusion Technology, Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Beijing, People’s Republic of China
| | - Ping Ma
- Department of Emerging Transfusion Technology, Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Beijing, People’s Republic of China
| | - Huisheng Ai
- Department of Hematology, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, People’s Republic of China
| | - Qianqian Zhou
- Department of Emerging Transfusion Technology, Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Beijing, People’s Republic of China
| | - Xiaohui Wang
- Department of Emerging Transfusion Technology, Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Beijing, People’s Republic of China
| | - Linsheng Zhan
- Department of Emerging Transfusion Technology, Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Beijing, People’s Republic of China
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23
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An Z, Yan J, Zhang Y, Pei R. Applications of nanomaterials for scavenging reactive oxygen species in the treatment of central nervous system diseases. J Mater Chem B 2020; 8:8748-8767. [DOI: 10.1039/d0tb01380c] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Nanomaterials with excellent ROS-scavenging ability and biodistribution are considered as promising candidates in alleviating oxidative stress and restoring redox balance in CNS diseases, further facilitating the function recovery of the CNS.
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Affiliation(s)
- Zhen An
- CAS Key Laboratory for Nano-Bio Interface
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou
- China
| | - Jincong Yan
- CAS Key Laboratory for Nano-Bio Interface
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou
- China
| | - Ye Zhang
- CAS Key Laboratory for Nano-Bio Interface
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou
- China
| | - Renjun Pei
- CAS Key Laboratory for Nano-Bio Interface
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou
- China
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24
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Sinha SS, Zak A, Rosentsveig R, Pinkas I, Tenne R, Yadgarov L. Size-Dependent Control of Exciton-Polariton Interactions in WS 2 Nanotubes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1904390. [PMID: 31833214 DOI: 10.1002/smll.201904390] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 11/09/2019] [Indexed: 06/10/2023]
Abstract
Multiwall WS2 nanotubes (and fullerene-like nanoparticles thereof) are currently synthesized in large amounts, reproducibly. Other than showing interesting mechanical and tribological properties, which offer them a myriad of applications, they are recently shown to exhibit remarkable optical and electrical properties, including quasi-1D superconductivity, electroluminescence, and a strong bulk photovoltaic effect. Here, it is shown that, using a simple dispersion-fractionation technique, one can control the diameter of the nanotubes and move from pure excitonic to polaritonic features. While nanotubes of an average diameter >80 nm can support cavity modes and scatter light effectively via a strong coupling mechanism, the extinction of nanotubes with smaller diameter consists of pure absorption. The experimental work is complemented by finite-difference time-domain simulations, which shed new light on the cavity mode-exciton interaction in 2D materials. Furthermore, transient absorption experiments of the size-fractionated nanotubes fully confirm the steady-state observations. Moreover, it is shown that the tools developed here are useful for size control of the nanotubes, e.g., in manufacturing environment. The tunability of the light-matter interaction of such nanotubes offers them intriguing applications such as polaritonic devices, in photocatalysis, and for multispectral sensors.
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Affiliation(s)
- Sudarson S Sinha
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Alla Zak
- Faculty of Sciences, Holon Institute of Technology, Holon, 5810201, Israel
| | - Rita Rosentsveig
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Iddo Pinkas
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Reshef Tenne
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Lena Yadgarov
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 7610001, Israel
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25
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Zhang Q, Pardo M, Rudich Y, Kaplan-Ashiri I, Wong JPS, Davis AY, Black MS, Weber RJ. Chemical Composition and Toxicity of Particles Emitted from a Consumer-Level 3D Printer Using Various Materials. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:12054-12061. [PMID: 31513393 DOI: 10.1021/acs.est.9b04168] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Consumer-level 3D printers emit ultrafine and fine particles, though little is known about their chemical composition or potential toxicity. We report chemical characteristics of the particles in comparison to raw filaments and assessments of particle toxicity. Particles emitted from polylactic acid (PLA) appeared to be largely composed of the bulk filament material with mass spectra similar to the PLA monomer spectra. Acrylonitrile butadiene styrene (ABS), extruded at a higher temperature than PLA, emitted vastly more particles and their composition differed from that of the bulk filament, suggesting that trace additives may control particle formation. In vitro cellular assays and in vivo mice exposure all showed toxic responses when exposed to PLA and ABS-emitted particles, where PLA-emitted particles elicited higher response levels than ABS-emitted particles at comparable mass doses. A chemical assay widely used in ambient air-quality studies showed that particles from various filament materials had comparable particle oxidative potentials, slightly lower than those of ambient particulate matter (PM2.5). However, particle emissions from ABS filaments are likely more detrimental when considering overall exposure due to much higher emissions. Our results suggest that 3D printer particle emissions are not benign and exposures should be minimized.
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Affiliation(s)
- Qian Zhang
- Chemical Safety and Human Health , Underwriters Laboratories Inc. , Marietta , Georgia 30067 , United States
| | | | | | | | - Jenny P S Wong
- School of Earth and Atmospheric Sciences , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Aika Y Davis
- Chemical Safety and Human Health , Underwriters Laboratories Inc. , Marietta , Georgia 30067 , United States
| | - Marilyn S Black
- Chemical Safety and Human Health , Underwriters Laboratories Inc. , Marietta , Georgia 30067 , United States
| | - Rodney J Weber
- School of Earth and Atmospheric Sciences , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
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26
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Serra M, Arenal R, Tenne R. An overview of the recent advances in inorganic nanotubes. NANOSCALE 2019; 11:8073-8090. [PMID: 30994692 DOI: 10.1039/c9nr01880h] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Advanced nanomaterials play a prominent role in nanoscience and nanotechnology developments, opening new frontiers in these areas. Among these nanomaterials, due to their unique characteristics and enhanced chemical and physical properties, inorganic nanotubes have been considered one of the most interesting nanostructures. In recent years, important progress has been achieved in the production and study of these nanomaterials, including boron nitride, transition metal dichalcogenide nanotubular structures, misfit-based nanotubes and other hybrid/doped nanotubular objects. This review is devoted to the in-depth analysis of recent studies on the synthesis, atomic structures, properties and applications of inorganic nanotubes and related nanostructures. Particular attention is paid to the growth mechanism of these nanomaterials. This is a crucial point for the challenges ahead related to the mass production of high-quality defect-free nanotubes for a variety of applications.
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Affiliation(s)
- Marco Serra
- Department of Materials and Interfaces, Weizmann Institute, Herzl Street 234, 76100, Rehovot, Israel.
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27
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Abstract
Composites of poly(l-lactic acid) (PLLA) reinforced by adding inorganic nanotubes of tungsten disulfide (INT–WS2) were prepared by solvent casting. In addition to the pristine nanotubes, PLLA nanocomposites containing surface modified nanotubes were studied as well. Several surface-active agents, including polyethylene imine (PEI), were studied in this context. In addition, other biocompatible polymers, like poly d,l-lactic acid (PDLLA) and others were considered in combination with the INT–WS2. The nanotubes were added to the polymer in different proportions up to 3 wt %. The dispersion of the nanotubes in the nanocomposites were analyzed by several techniques, including X-ray tomography microscopy (Micro-XCT). Moreover, high-temperature rheological measurements of the molten polymer were conducted. In contrast to other nanoparticles, which lead to a considerable increase of the viscosity of the molten polymer, the WS2 nanotubes did not affect the viscosity significantly. They did not affect the complex viscosity of the molten PLLA phase, either. The mechanical and tribological properties of the nanocomposites were found to improve considerably by adding the nanotubes. A direct correlation was observed between the dispersion of the nanotubes in the polymer matrix and its mechanical properties.
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28
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Laloy J, Haguet H, Alpan L, Raichman D, Dogné JM, Lellouche JP. Impact of functional inorganic nanotubes f-INTs-WS 2 on hemolysis, platelet function and coagulation. NANO CONVERGENCE 2018; 5:31. [PMID: 30467733 PMCID: PMC6206311 DOI: 10.1186/s40580-018-0162-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 10/07/2018] [Indexed: 06/09/2023]
Abstract
Inorganic transition metal dichalcogenide nanostructures are interesting for several biomedical applications such as coating for medical devices (e.g. endodontic files, catheter stents) and reinforcement of scaffolds for tissue engineering. However, their impact on human blood is unknown. A unique nanomaterial surface-engineering chemical methodology was used to fabricate functional polyacidic polyCOOH inorganic nanotubes of tungsten disulfide towards covalent binding of any desired molecule/organic species via chemical activation/reactivity of this former polyCOOH shell. The impact of these nanotubes on hemolysis, platelet aggregation and blood coagulation has been assessed using spectrophotometric measurement, light transmission aggregometry and thrombin generation assays. The functionalized nanotubes do not induce hemolysis but decrease platelet aggregation and induce coagulation through intrinsic pathway activation. The functional nanotubes were found to be more thrombogenic than the non-functional ones, suggesting lower hemocompatibility and increased thrombotic risk with functionalized tungsten disulfide nanotubes. These functionalized nanotubes should be used with caution in blood-contacting devices.
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Affiliation(s)
- Julie Laloy
- Namur Nanosafety Centre, University of Namur, Rue de Bruxelles 61, 5000 Namur, Belgium
- Department of Pharmacy, NARILIS, University of Namur, Namur, Belgium
| | - Hélène Haguet
- Department of Pharmacy, NARILIS, University of Namur, Namur, Belgium
- Department of Haematology Laboratory, Université catholique de Louvain, CHU UCL Namur, NARILIS, Yvoir, Belgium
| | - Lutfiye Alpan
- Namur Nanosafety Centre, University of Namur, Rue de Bruxelles 61, 5000 Namur, Belgium
- Department of Pharmacy, NARILIS, University of Namur, Namur, Belgium
| | - Daniel Raichman
- Department of Chemistry & Institute of Nanotechnology & Advanced Materials (BINA), Bar-Ilan University, Max & Anna Web Street, 5290002 Ramat-Gan, Israel
| | - Jean-Michel Dogné
- Namur Nanosafety Centre, University of Namur, Rue de Bruxelles 61, 5000 Namur, Belgium
- Department of Pharmacy, NARILIS, University of Namur, Namur, Belgium
| | - Jean-Paul Lellouche
- Department of Chemistry & Institute of Nanotechnology & Advanced Materials (BINA), Bar-Ilan University, Max & Anna Web Street, 5290002 Ramat-Gan, Israel
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29
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Sade H, Lellouche JP. Preparation and Characterization of WS₂@SiO₂ and WS₂@PANI Core-Shell Nanocomposites. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E156. [PMID: 29534426 PMCID: PMC5869647 DOI: 10.3390/nano8030156] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 03/07/2018] [Accepted: 03/08/2018] [Indexed: 11/30/2022]
Abstract
Two tungsten disulfide (WS₂)-based core-shell nanocomposites were fabricated using readily available reagents and simple procedures. The surface was pre-treated with a surfactant couple in a layer-by-layer approach, enabling good dispersion of the WS₂ nanostructures in aqueous media and providing a template for the polymerization of a silica (SiO₂) shell. After a Stöber-like reaction, a conformal silica coating was achieved. Inspired by the resulting nanocomposite, a second one was prepared by reacting the surfactant-modified WS₂ nanostructures with aniline and an oxidizing agent in an aqueous medium. Here too, a conformal coating of polyaniline (PANI) was obtained, giving a WS₂@PANI nanocomposite. Both nanocomposites were analyzed by electron microscopy, energy dispersive X-ray spectroscopy (EDS) and FTIR, verifying the core-shell structure and the character of shells. The silica shell was amorphous and mesoporous and the surface area of the composite increases with shell thickness. Polyaniline shells slightly differ in their morphologies dependent on the acid used in the polymerization process and are amorphous like the silica shell. Electron paramagnetic resonance (EPR) spectroscopy of the WS₂@PANI nanocomposite showed variation between bulk PANI and the PANI shell. These two nanocomposites have great potential to expand the use of transition metals dichalcogenides (TMDCs) for new applications in different fields.
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Affiliation(s)
- Hagit Sade
- Institute of Nanotechnology and Advanced Materials & Department of Chemistry, Faculty of Exact Sciences, Bar-Ilan University, Ramat Gan 5290002, Israel.
| | - Jean-Paul Lellouche
- Institute of Nanotechnology and Advanced Materials & Department of Chemistry, Faculty of Exact Sciences, Bar-Ilan University, Ramat Gan 5290002, Israel.
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30
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Yu Polyakov A, Zak A, Tenne R, Goodilin EA, Solntsev KA. Nanocomposites based on tubular and onion nanostructures of molybdenum and tungsten disulfides: inorganic design, functional properties and applications. RUSSIAN CHEMICAL REVIEWS 2018. [DOI: 10.1070/rcr4798] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The review concerns the development and the state-of-the-art in studies on the surface modification methods aimed at fabricating promising nanocomposites based on multilayer inorganic tubular and onion (fullerene-like) MoS2 and WS2 nanostructures. The synthetic details and structural features of these materials are considered. Considerable attention is paid to targeted functionalization of molybdenum and tungsten disulfide nanostructures and to fundamental principles that underlie their ability to chemical interactions. The functional properties and applications of the obtained materials are described.
The bibliography includes 183 references.
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31
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Shalom H, Feldman Y, Rosentsveig R, Pinkas I, Kaplan-Ashiri I, Moshkovich A, Perfilyev V, Rapoport L, Tenne R. Electrophoretic Deposition of Hydroxyapatite Film Containing Re-Doped MoS₂ Nanoparticles. Int J Mol Sci 2018; 19:E657. [PMID: 29495394 PMCID: PMC5877518 DOI: 10.3390/ijms19030657] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 01/11/2018] [Accepted: 01/12/2018] [Indexed: 11/30/2022] Open
Abstract
Films combining hydroxyapatite (HA) with minute amounts (ca. 1 weight %) of (rhenium doped) fullerene-like MoS₂ (IF) nanoparticles were deposited onto porous titanium substrate through electrophoretic process (EPD). The films were analyzed by scanning electron microscopy (SEM), X-ray diffraction and Raman spectroscopy. The SEM analysis showed relatively uniform coatings of the HA + IF on the titanium substrate. Chemical composition analysis using energy dispersive X-ray spectroscopy (EDS) of the coatings revealed the presence of calcium phosphate minerals like hydroxyapatite, as a majority phase. Tribological tests were undertaken showing that the IF nanoparticles endow the HA film very low friction and wear characteristics. Such films could be of interest for various medical technologies. Means for improving the adhesion of the film to the underlying substrate and its fracture toughness, without compromising its biocompatibility are discussed at the end.
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Affiliation(s)
- Hila Shalom
- Department of Materials and Interfaces, Weizmann Institute, Rehovot 76100, Israel.
| | - Yishay Feldman
- Department of Chemical Research Support, Weizmann Institute, Rehovot 76100, Israel.
| | - Rita Rosentsveig
- Department of Materials and Interfaces, Weizmann Institute, Rehovot 76100, Israel.
| | - Iddo Pinkas
- Department of Chemical Research Support, Weizmann Institute, Rehovot 76100, Israel.
| | - Ifat Kaplan-Ashiri
- Department of Chemical Research Support, Weizmann Institute, Rehovot 76100, Israel.
| | - Alexey Moshkovich
- Department of Science, Holon Institute of Technology, P.O. Box 305, 52 Golomb St., Holon 58102, Israel.
| | - Vladislav Perfilyev
- Department of Science, Holon Institute of Technology, P.O. Box 305, 52 Golomb St., Holon 58102, Israel.
| | - Lev Rapoport
- Department of Science, Holon Institute of Technology, P.O. Box 305, 52 Golomb St., Holon 58102, Israel.
| | - Reshef Tenne
- Department of Materials and Interfaces, Weizmann Institute, Rehovot 76100, Israel.
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32
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Silverman T, Naffakh M, Marco C, Ellis G. Effect of WS₂ Inorganic Nanotubes on Isothermal Crystallization Behavior and Kinetics of Poly(3-Hydroxybutyrate-co-3-hydroxyvalerate). Polymers (Basel) 2018; 10:E166. [PMID: 30966202 PMCID: PMC6414936 DOI: 10.3390/polym10020166] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 02/05/2018] [Accepted: 02/06/2018] [Indexed: 11/16/2022] Open
Abstract
Nanocomposites of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and tungsten disulfide inorganic nanotubes (INT-WS₂) were prepared by blending in solution, and the effects of INT-WS₂ on the isothermal crystallization behavior and kinetics of PHBV were investigated for the first time. The isothermal crystallization process was studied in detail using various techniques, with emphasis on the role of INT-WS₂ concentration. Differential scanning calorimetry (DSC) and polarized optical microscopy (POM) showed that, in the nucleation-controlled regime, crystallization rates of PHBV in the nanocomposites are influenced by the INT-WS₂ loading. Our results demonstrated that low loadings of INT-WS₂ (0.1⁻1.0 wt %) increased the crystallization rates of PHBV, reducing the fold surface free energy by up to 24%. This is ascribed to the high nucleation efficiency of INT-WS₂ on the crystallization of PHBV. These observations facilitate a deeper understanding of the structure-property relationships in PHBV biopolymer nanocomposites and are useful for their practical applications.
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Affiliation(s)
- Tyler Silverman
- Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid (ETSII-UPM), José Gutiérrez Abascal 2, 28006 Madrid, Spain.
| | - Mohammed Naffakh
- Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid (ETSII-UPM), José Gutiérrez Abascal 2, 28006 Madrid, Spain.
| | - Carlos Marco
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain.
| | - Gary Ellis
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain.
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33
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Ke S, Lai Y, Zhou T, Li L, Wang Y, Ren L, Ye S. Molybdenum Disulfide Nanoparticles Resist Oxidative Stress-Mediated Impairment of Autophagic Flux and Mitigate Endothelial Cell Senescence and Angiogenic Dysfunctions. ACS Biomater Sci Eng 2018; 4:663-674. [PMID: 33418754 DOI: 10.1021/acsbiomaterials.7b00714] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The impairment of autophagy involves oxidative stress-induced cellular senescence, leading to endothelial dysfunctions and the onset of cardiovascular diseases. As molybdenum disulfide nanoparticles (MoS2 NPs), representative transition metal dichacogenide materials, have great potential as a multifunctional therapeutic agent against various disorders, the present study aimed to investigate whether MoS2 NPs prevents hydrogen peroxide (H2O2)-induced endothelial senescence by modulating autophagic process. Our results showed that pretreatment with MoS2 NPs inhibited H2O2-induced endothelial senescence and improved endothelial functions. Exposure of H2O2 increased p62 level and blocked the fusion of autophagosomes with lysosomes, indicating of impaired autophagic flux in senescent endothelial cells. However, MoS2 NPs pretreatment efficiently suppressed cellular senescence through triggering autophagy and resisting impaired autophagic flux. Furthermore, the genetic inhibition of autophagy by siRNA against Beclin 1 or ATG-5 directly abrogated the protective action of MoS2 NPs on endothelial cells against H2O2-induced senescence.Thus, these results suggested that MoS2 NPs rescue endothelial cells from H2O2-induced senescence by improving autophagic flux, and provide valuable information for the rational design of MoS2-based nanomaterials for therapeutic use in senescence-related diseases.
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Affiliation(s)
- Sunkui Ke
- Department of Thoracic Surgery, Zhongshan Hospital of Xiamen University, Xiamen 361004, P. R. China
| | - Youlin Lai
- Department of Obstetrics, Xiamen Maternity and Care Hospital, Xiamen 361000, P. R. China
| | - Tong Zhou
- Department of Biomaterials, College of Materials, Xiamen University, Xiamen 361005, P. R. China
| | - Lihuang Li
- Department of Biomaterials, College of Materials, Xiamen University, Xiamen 361005, P. R. China
| | - Yange Wang
- Department of Biomaterials, College of Materials, Xiamen University, Xiamen 361005, P. R. China
| | - Lei Ren
- Department of Biomaterials, College of Materials, Xiamen University, Xiamen 361005, P. R. China
| | - Shefang Ye
- Department of Biomaterials, College of Materials, Xiamen University, Xiamen 361005, P. R. China
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Liu S, Shen Z, Wu B, Yu Y, Hou H, Zhang XX, Ren HQ. Cytotoxicity and Efflux Pump Inhibition Induced by Molybdenum Disulfide and Boron Nitride Nanomaterials with Sheetlike Structure. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:10834-10842. [PMID: 28841301 DOI: 10.1021/acs.est.7b02463] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Sheetlike molybdenum disulfide (MoS2) and boron nitride (BN) nanomaterials have attracted attention in the past few years due to their unique material properties. However, information on adverse effects and their underlying mechanisms for sheetlike MoS2 and BN nanomaterials is rare. In this study, cytotoxicities of sheetlike MoS2 and BN nanomaterials on human hepatoma HepG2 cells were systematically investigated at different toxic end points. Results showed that MoS2 and BN nanomaterials decreased cell viability at 30 μg/mL and induced adverse effects on intracellular ROS generation (≥2 μg/mL), mitochondrial depolarization (≥4 μg/mL), and membrane integrity (≥8 μg/mL for MoS2 and ≥2 μg/mL for BN). Furthermore, this study first found that low exposure concentrations (0.2-2 μg/mL) of MoS2 and BN nanomaterials could increase plasma membrane fluidity and inhibit transmembrane ATP binding cassette (ABC) efflux transporter activity, which make both nanomaterials act as a chemosensitizer (increasing arsenic toxicity). Damage to plasma membrane and release of soluble Mo or B species might be two reasons that both nanomaterials inhibit efflux pump activities. This study provides a systematic understanding of the cytotoxicity of sheetlike MoS2 and BN nanomaterials at different exposure levels, which is important for their safe use.
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Affiliation(s)
- Su Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , Nanjing, 210023, P. R. China
| | - Zhuoyan Shen
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , Nanjing, 210023, P. R. China
| | - Bing Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , Nanjing, 210023, P. R. China
| | - Yue Yu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , Nanjing, 210023, P. R. China
| | - Hui Hou
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , Nanjing, 210023, P. R. China
| | - Xu-Xiang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , Nanjing, 210023, P. R. China
| | - Hong-Qiang Ren
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , Nanjing, 210023, P. R. China
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35
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Višić B, Panchakarla LS, Tenne R. Inorganic Nanotubes and Fullerene-like Nanoparticles at the Crossroads between Solid-State Chemistry and Nanotechnology. J Am Chem Soc 2017; 139:12865-12878. [DOI: 10.1021/jacs.7b01652] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Bojana Višić
- Department
of Materials and Interfaces, Weizmann Institute, Rehovot 76100, Israel
| | | | - Reshef Tenne
- Department
of Materials and Interfaces, Weizmann Institute, Rehovot 76100, Israel
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36
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Savva K, Višić B, Popovitz-Biro R, Stratakis E, Tenne R. Short Pulse Laser Synthesis of Transition-Metal Dichalcogenide Nanostructures under Ambient Conditions. ACS OMEGA 2017; 2:2649-2656. [PMID: 31457606 PMCID: PMC6641615 DOI: 10.1021/acsomega.7b00409] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 06/01/2017] [Indexed: 05/11/2023]
Abstract
The study of inorganic nanometer-scale materials with hollow closed-cage structures, such as inorganic fullerene-like (IF) nanostructures and inorganic nanotubes (INTs), is a rapidly growing field. Numerous kinds of IF nanostructures and INTs were synthesized for a variety of applications, particularly for lubrication, functional coatings, and reinforcement of polymer matrices. To date, such nanostructures have been synthesized mostly by heating a transition metal or oxide thereof in the presence of precursor gases, which are however toxic and hazardous. In this context, one frontier of research in this field is the development of new avenues for the green synthesis of IF structures and INTs, directly from the bulk of layered compounds. In the present work, we demonstrate a simple room-temperature and environmentally friendly approach for the synthesis of IF nanostructures and INTs via ultrashort-pulse laser ablation of a mixture of transition-metal dichalcogenides in bulk form mixed with Pb/PbO, in ambient air. The method can be considered as a synergy of photothermally and photochemically induced chemical transformations. The ultrafast-laser-induced excitation of the material, complemented with the formation of extended hot annealing regions in the presence of the metal catalyst, facilitates the formation of different nanostructures. Being fast, easy, and material-independent, our method offers new opportunities for the synthesis of IF nanostructures and INTs from different bulk metal chalcogenide compounds. On the basis of the capabilities of laser technology as well, this method could advantageously be further developed into a versatile tool for the simultaneous growth and patterning of such nanostructures in preselected positions for a variety of applications.
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Affiliation(s)
- Kyriaki Savva
- Institute
of Electronic Structure and Laser Foundation for Research and Technology
- Hellas, Heraklion, 71110 Crete, Greece
- Physics
Department, University of Crete, Heraklion, 71004 Crete, Greece
| | - Bojana Višić
- Weizmann
Institute of Science, 7610001 Rehovot, Israel
| | | | - Emmanuel Stratakis
- Institute
of Electronic Structure and Laser Foundation for Research and Technology
- Hellas, Heraklion, 71110 Crete, Greece
- Physics
Department, University of Crete, Heraklion, 71004 Crete, Greece
| | - Reshef Tenne
- Weizmann
Institute of Science, 7610001 Rehovot, Israel
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37
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Han Q, Cai S, Yang L, Wang X, Qi C, Yang R, Wang C. Molybdenum Disulfide Nanoparticles as Multifunctional Inhibitors against Alzheimer's Disease. ACS APPLIED MATERIALS & INTERFACES 2017; 9:21116-21123. [PMID: 28613069 DOI: 10.1021/acsami.7b03816] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The complex pathogenic mechanisms of Alzheimer's disease (AD) include the aggregation of β-amyloid peptides (Aβ) into oligomers or fibrils as well as Aβ-mediated oxidative stress, which require comprehensive treatment. Therefore, the inhibition of Aβ aggregation and free-radical scavenging are essential for the treatment of AD. Nanoparticles (NPs) have been found to influence Aβ aggregation process in vitro. Herein, we report the inhibition effects of molybdenum disulfide (MoS2) NPs on Aβ aggregation. Polyvinylpyrrolidone-functionalized MoS2 NPs were fabricated by a pulsed laser ablation method. We find that MoS2 NPs exhibit multifunctional effects on Aβ peptides: inhibiting Aβ aggregation, destabilizing Aβ fibrils, alleviating Aβ-induced oxidative stress, as well as Aβ-mediated cell toxicity. Moreover, we show that MoS2 NPs can block the formation of the Ca2+ channel induced by Aβ fibrils in the cell membrane for the first time. Thus, these observations suggest that MoS2 NPs have great potential for a multifunctional therapeutic agent against amyloid-related diseases.
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Affiliation(s)
- Qiusen Han
- CAS Center of Excellence for Nanoscience, National Center for Nanoscience and Technology, UCAS , Beijing 100190, P. R. China
- Sino-Danish College, Sino-Danish Center for Education and Research, UCAS , Beijing 100190, P. R. China
| | - Shuangfei Cai
- CAS Center of Excellence for Nanoscience, National Center for Nanoscience and Technology, UCAS , Beijing 100190, P. R. China
| | - Lin Yang
- CAS Center of Excellence for Nanoscience, National Center for Nanoscience and Technology, UCAS , Beijing 100190, P. R. China
| | - Xinhuan Wang
- CAS Center of Excellence for Nanoscience, National Center for Nanoscience and Technology, UCAS , Beijing 100190, P. R. China
| | - Cui Qi
- CAS Center of Excellence for Nanoscience, National Center for Nanoscience and Technology, UCAS , Beijing 100190, P. R. China
| | - Rong Yang
- CAS Center of Excellence for Nanoscience, National Center for Nanoscience and Technology, UCAS , Beijing 100190, P. R. China
- Sino-Danish College, Sino-Danish Center for Education and Research, UCAS , Beijing 100190, P. R. China
| | - Chen Wang
- CAS Center of Excellence for Nanoscience, National Center for Nanoscience and Technology, UCAS , Beijing 100190, P. R. China
- Sino-Danish College, Sino-Danish Center for Education and Research, UCAS , Beijing 100190, P. R. China
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38
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Han Q, Wang X, Jia X, Cai S, Liang W, Qin Y, Yang R, Wang C. CpG loaded MoS 2 nanosheets as multifunctional agents for photothermal enhanced cancer immunotherapy. NANOSCALE 2017; 9:5927-5934. [PMID: 28436514 DOI: 10.1039/c7nr01460k] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Single or few-layered MoS2 nanosheets, as a novel class of 2D nanomaterials, have received tremendous attention due to their fantastic physical and chemical properties. Here, we fabricated MoS2-PEG-CpG with a small and uniform size as a multifunctional platform for photothermal enhanced immunotherapy. MoS2 nanosheets were fabricated by chemical exfoliation and further probe sonication. To realize MoS2-based adjuvant delivery, MoS2 nanosheets were functionalized with cytosine-phosphate-guanine (CpG) and polyethylene glycol (PEG) to form MoS2-PEG-CpG nanoconjugates. As an efficient nanocarrier with excellent near infrared-light (NIR) absorbing performance, MoS2-PEG-CpG significantly promotes CpG intracellular accumulation and the effect can be further enhanced by photothermal treatment. In addition, the enhanced uptake can stimulate the production of proinflammatory cytokines and remarkably elevate the immune response level. Finally, we found that MoS2-PEG-CpG could reduce the proliferative activity of cancer cells when co-cultured with a macrophage-like cell upon NIR irradiation, implying a novel strategy for multifunctional therapeutics against cancers.
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Affiliation(s)
- Qiusen Han
- CAS Center of Excellence for Nanoscience, National Center for Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100190, P. R. China.
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39
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Pardo M, Katra I, Schaeur JJ, Rudich Y. Mitochondria-mediated oxidative stress induced by desert dust in rat alveolar macrophages. GEOHEALTH 2017; 1:4-16. [PMID: 32158977 PMCID: PMC7007135 DOI: 10.1002/2016gh000017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 12/25/2016] [Accepted: 01/18/2017] [Indexed: 05/10/2023]
Abstract
Exposure to ambient particulate matter (PM), including PM from resuspension of soils and dusts, increases the risk for respiratory diseases. However, the exact mechanism of PM-mediated damage to the lungs remains unclear. Due to recent increases in the frequency of dust storms in many areas, we examined the cytotoxic effects of soil-dust samples collected in an arid zone in Israel on rat lung macrophages. The desert soil contains soil crusts and low levels of toxic metal content. Exposure of cells to water extracts from the dust samples caused significant reduction in the concentration of live cells and overall cell viability. The dust samples induced cell death through apoptosis, mitochondrial dysfunction, and increased mitochondrial lipid peroxidation. The dust samples generated more reactive oxygen species (ROS) compared to control-treated samples and National Institute of Standards and Technology San Joaquin Valley standard reference material. To assess whether the oxidative imbalance induced by dust extract also interferes with the antioxidant defense, we evaluated phase II detoxifying and antioxidant enzymes, which are Nrf2 classical targets. The Nrf2 transcription factor is a master regulator of cellular adaptation to stress. The dust extracts produced a significant increase in phase II detoxifying genes. This work suggests that the health-related injury observed in rat lung cells exposed to dust extracts is associated with ROS generation, mitochondrial dysfunction, mitochondrial lipid peroxidation, and cellular antioxidant imbalance. Damage to lung mitochondria may be an important mechanism by which dust-containing bacterial material induces lung injury upon inhalation.
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Affiliation(s)
- Michal Pardo
- Department of Earth and Planetary SciencesWeizmann Institute of ScienceRehovotIsrael
| | - Itzhak Katra
- Department of Geography and Environmental DevelopmentBen‐Gurion University of the NegevBeershebaIsrael
| | - James J. Schaeur
- Environmental Chemistry and Technology ProgramUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - Yinon Rudich
- Department of Earth and Planetary SciencesWeizmann Institute of ScienceRehovotIsrael
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40
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Rashkow JT, Talukdar Y, Lalwani G, Sitharaman B. Interactions of 1D- and 2D-layered inorganic nanoparticles with fibroblasts and human mesenchymal stem cells. Nanomedicine (Lond) 2016; 10:1693-706. [PMID: 26080694 DOI: 10.2217/nnm.15.35] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
AIM This study investigates the effects of tungsten disulfide nanotubes (WSNTs) and molybdenum disulfide nanoplatelets (MSNPs) on fibroblasts (NIH-3T3) and mesenchymal stem cells (MSCs) to determine safe dosages for potential biomedical applications. MATERIALS & METHODS Cytotoxicity of MSNPs and WSNTs (5-300 μg/ml) on NIH-3T3 and MSCs was assessed at 6, 12 or 24 h. MSC differentiation to adipocytes and osteoblasts was assessed following treatment for 24 h. RESULTS Only NIH-3T3 cells treated with MSNPs showed dose or time dependent increase in cytotoxicity. Differentiation markers of MSCs in treated groups were unaffected compared with untreated controls. CONCLUSION MSNPs and WSNTs at concentrations less than 50 µg/ml are potentially safe for treatment of fibroblasts or MSCs for up to 24 h.
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Affiliation(s)
- Jason Thomas Rashkow
- Department of Biomedical Engineering, Stony Brook University, Bioengineering Building, Rm 115, Stony Brook, NY 11794-5281, USA
| | - Yahfi Talukdar
- Department of Biomedical Engineering, Stony Brook University, Bioengineering Building, Rm 115, Stony Brook, NY 11794-5281, USA
| | - Gaurav Lalwani
- Department of Biomedical Engineering, Stony Brook University, Bioengineering Building, Rm 115, Stony Brook, NY 11794-5281, USA
| | - Balaji Sitharaman
- Department of Biomedical Engineering, Stony Brook University, Bioengineering Building, Rm 115, Stony Brook, NY 11794-5281, USA
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41
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Pardo M, Porat Z, Rudich A, Schauer JJ, Rudich Y. Repeated exposures to roadside particulate matter extracts suppresses pulmonary defense mechanisms, resulting in lipid and protein oxidative damage. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 210:227-37. [PMID: 26735168 DOI: 10.1016/j.envpol.2015.12.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 12/02/2015] [Accepted: 12/05/2015] [Indexed: 05/25/2023]
Abstract
Exposure to particulate matter (PM) pollution in cities and urban canyons can be harmful to the exposed population. However, the underlying mechanisms that lead to health effects are not yet elucidated. It is postulated that exposure to repeated, small, environmentally relevant concentrations can affect lung homeostasis. This study examines the impact of repeated exposures to urban PM on mouse lungs with focus on inflammatory and oxidative stress parameters. Aqueous extracts from collected urban PM were administered to mice by 5 repeated intra-tracheal instillations (IT). Multiple exposures, led to an increase in cytokine levels in both bronchoalveolar lavage fluid and in the blood serum, indicating a systemic reaction. Lung mRNA levels of antioxidant/phase II detoxifying enzymes decreased by exposure to the PM extract, but not when metals were removed by chelation. Finally, disruption of lung tissue oxidant-inflammatory/defense balance was evidenced by increased levels of lipid and protein oxidation. Unlike response to a single IT exposure to the same dose and source of extract, multiple exposures result in lung oxidative damage and a systemic inflammatory reaction. These could be attributed to compromised capacity to activate the protective Nrf2 tissue defense system. It is suggested that water-soluble metals present in urban PM, potentially from break and tire wear, may constitute major drivers of the pulmonary and systemic responses to multiple exposure to urban PM.
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Affiliation(s)
- Michal Pardo
- Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Ziv Porat
- Flow Cytometry Unit, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Assaf Rudich
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, and the National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - James J Schauer
- Environmental Chemistry and Technology Program, University of Wisconsin-Madison, Madison, WI, USA
| | - Yinon Rudich
- Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot, 76100, Israel.
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42
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Naffakh M, Díez-Pascual AM, Marco C. Polymer blend nanocomposites based on poly(l-lactic acid), polypropylene and WS2 inorganic nanotubes. RSC Adv 2016. [DOI: 10.1039/c6ra05803e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The overall thermal and mechanical properties of PLLA/PPPP-g-MAH/INT-WS2 confirm the high-performance of these novel biopolymer blend nanocomposites, which opens new possibilities for use in biomedical applications.
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Affiliation(s)
- Mohammed Naffakh
- Escuela Técnica Superior de Ingenieros Industriales
- Universidad Politécnica de Madrid (ETSII-UPM)
- 28006 Madrid
- Spain
| | - Ana M. Díez-Pascual
- Departamento de Química Analítica
- Química Física e Ingeniería Química
- Facultad de Biología
- Ciencias Ambientales y Química
- Universidad de Alcalá
| | - Carlos Marco
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC)
- 28006 Madrid
- Spain
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43
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Ben Ishay R, Harel Y, Lavi R, Lellouche JP. Multiple functionalization of tungsten disulfide inorganic nanotubes by covalently grafted conductive polythiophenes. RSC Adv 2016. [DOI: 10.1039/c6ra19628d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Covalently grafted nanometric polythiophene adlayers have been generated towards morphologically well-defined core–shell WS2 INTs/polymer composites achieving high charge conductivity.
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Affiliation(s)
- Rivka Ben Ishay
- Department of Chemistry
- Nanomaterials Research Center
- Institute of Nanotechnology & Advanced Materials
- Bar-Ilan University
- Ramat-Gan 5290002
| | - Yifat Harel
- Department of Chemistry
- Nanomaterials Research Center
- Institute of Nanotechnology & Advanced Materials
- Bar-Ilan University
- Ramat-Gan 5290002
| | - Ronit Lavi
- Department of Chemistry
- Nanomaterials Research Center
- Institute of Nanotechnology & Advanced Materials
- Bar-Ilan University
- Ramat-Gan 5290002
| | - Jean-Paul Lellouche
- Department of Chemistry
- Nanomaterials Research Center
- Institute of Nanotechnology & Advanced Materials
- Bar-Ilan University
- Ramat-Gan 5290002
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44
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Non-Isothermal Cold-Crystallization Behavior and Kinetics of Poly(l-Lactic Acid)/WS2 Inorganic Nanotube Nanocomposites. Polymers (Basel) 2015. [DOI: 10.3390/polym7111507] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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45
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Pardo M, Shafer MM, Rudich A, Schauer JJ, Rudich Y. Single Exposure to near Roadway Particulate Matter Leads to Confined Inflammatory and Defense Responses: Possible Role of Metals. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:8777-8785. [PMID: 26121492 DOI: 10.1021/acs.est.5b01449] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Inhalation of traffic-associated atmospheric particulate matter (PM2.5) is recognized as a significant health risk. In this study, we focused on a single ("subclinical response") exposure to water-soluble extracts from PM collected at a roadside site in a major European city to elucidate potential components that drive pulmonary inflammatory, oxidative, and defense mechanisms and their systemic impacts. Intratracheal instillation (IT) of the aqueous extracts induced a 24 h inflammatory response characterized by increased broncho-alveolar lavage fluid (BALF) cells and cytokines (IL-6 and TNF-α), increased reactive oxygen species production, but insignificant lipids and proteins oxidation adducts in mouse lungs. This local response was largely self-resolved by 48 h, suggesting that it could represent a subclinical response to everyday-level exposure. Removal of soluble metals by chelation markedly diminished the pulmonary PM-mediated response. An artificial metal solution (MS) recapitulated the PM extract response. The self-resolving nature of the response is associated with activating defense mechanisms (increased levels of catalase and glutathione peroxidase expression), observed with both PM extract and MS. In conclusion, metals present in PM collected near roadways are largely responsible for the observed transient local pulmonary inflammation and oxidative stress. Simultaneous activation of the antioxidant defense response may protect against oxidative damage.
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Affiliation(s)
- Michal Pardo
- †Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Martin M Shafer
- ‡Environmental Chemistry and Technology Program, University of Wisconsin-Madison, Madison, Wisconsin, United States
| | - Assaf Rudich
- §Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, and the National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - James J Schauer
- ‡Environmental Chemistry and Technology Program, University of Wisconsin-Madison, Madison, Wisconsin, United States
| | - Yinon Rudich
- †Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
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46
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Sedova A, Ron R, Goldbart O, Elianov O, Yadgarov L, Kampf N, Rosentsveig R, Shumalinsky D, Lobik L, Shay B, Moshonov J, Wagner HD, Tenne R. Re-doped fullerene-like MoS2nanoparticles in relationship with soft lubrication. ACTA ACUST UNITED AC 2015. [DOI: 10.1680/nme.14.00020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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47
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Lemus R, Venezia CF. An update to the toxicological profile for water-soluble and sparingly soluble tungsten substances. Crit Rev Toxicol 2015; 45:388-411. [PMID: 25695728 PMCID: PMC4732414 DOI: 10.3109/10408444.2014.1003422] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 12/28/2014] [Indexed: 12/08/2022]
Abstract
Tungsten is a relatively rare metal with numerous applications, most notably in machine tools, catalysts, and superalloys. In 2003, tungsten was nominated for study under the National Toxicology Program, and in 2011, it was nominated for human health assessment under the US Environmental Protection Agency's (EPA) Integrated Risk Information System. In 2005, the Agency for Toxic Substances and Disease Registry (ATSDR) issued a toxicological profile for tungsten, identifying several data gaps in the hazard assessment of tungsten. By filling the data gaps identified by the ATSDR, this review serves as an update to the toxicological profile for tungsten and tungsten substances. A PubMed literature search was conducted to identify reports published during the period 2004-2014, in order to gather relevant information related to tungsten toxicity. Additional information was also obtained directly from unpublished studies from within the tungsten industry. A systematic approach to evaluate the quality of data was conducted according to published criteria. This comprehensive review has gathered new toxicokinetic information and summarizes the details of acute and repeated-exposure studies that include reproductive, developmental, neurotoxicological, and immunotoxicological endpoints. Such new evidence involves several relevant studies that must be considered when regulators estimate and propose a tungsten reference or concentration dose.
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Affiliation(s)
- Ranulfo Lemus
- International Tungsten Industry Association (ITIA), London, UK
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48
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Naffakh M, Díez-Pascual AM. WS2 inorganic nanotubes reinforced poly(l-lactic acid)/hydroxyapatite hybrid composite biomaterials. RSC Adv 2015. [DOI: 10.1039/c5ra10707e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study confirms the potential use of WS2 inorganic nanotubes to prepare a novel PLLA/HA hybrid nanocomposite for biomedical applications.
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Affiliation(s)
- Mohammed Naffakh
- Escuela Técnica Superior de Ingenieros Industriales
- Universidad Politécnica de Madrid (ETSII-UPM)
- 28006 Madrid
- Spain
| | - Ana M. Díez-Pascual
- Departamento de Química Analítica
- Química Física e Ingeniería Química
- Facultad de Biología
- Ciencias Ambientales y Química
- Universidad de Alcalá
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49
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Naffakh M, Shuttleworth PS, Ellis G. Bio-based polymer nanocomposites based on nylon 11 and WS2 inorganic nanotubes. RSC Adv 2015. [DOI: 10.1039/c4ra17210h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study confirms the potential use of novel bio-nylon 11/INT-WS2 for many eco-friendly and biomedical applications.
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Affiliation(s)
- Mohammed Naffakh
- Escuela Técnica Superior de Ingenieros Industriales
- Universidad Politécnica de Madrid (ETSII-UPM)
- 28006 Madrid
- Spain
| | | | - Gary Ellis
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC)
- 28006 Madrid
- Spain
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50
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Goldman EB, Zak A, Tenne R, Kartvelishvily E, Levin-Zaidman S, Neumann Y, Stiubea-Cohen R, Palmon A, Hovav AH, Aframian DJ. Biocompatibility of tungsten disulfide inorganic nanotubes and fullerene-like nanoparticles with salivary gland cells. Tissue Eng Part A 2014; 21:1013-23. [PMID: 25366879 DOI: 10.1089/ten.tea.2014.0163] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Impaired salivary gland (SG) function leading to oral diseases is relatively common with no adequate solution. Previously, tissue engineering of SG had been proposed to overcome this morbidity, however, not yet clinically available. Multiwall inorganic (tungsten disulfide [WS2]) nanotubes (INT-WS2) and fullerene-like nanoparticles (IF-WS2) have many potential medical applications. A yet unexplored venue application is their interaction with SG, and therefore, our aim was to test the biocompatibility of INT/IF-WS2 with the A5 and rat submandibular cells (RSC) SG cells. The cells were cultured and subjected after 1 day to different concentrations of INT-WS2 and were compared to control groups. Growth curves, trypan blue viability test, and carboxyfluorescein succinimidyl ester (CFSE) proliferation assay were obtained. Furthermore, cells morphology and interaction with the nanoparticles were observed by light microscopy, scanning electron microscopy and transmission electron microscopy (TEM), and energy dispersive X-ray spectroscopy. The results showed no significant differences in growth curves, proliferation kinetics, and viability between the groups compared. Moreover, no alterations were observed in the cell morphology. Interestingly, TEM images indicated that the nanoparticles are uptaken by the cells and accumulate in cytoplasmic vesicles. These results suggest promising future medical applications for these nanoparticles.
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Affiliation(s)
- Elisheva B Goldman
- 1 Faculty of Dental Medicine, The Hebrew University of Jerusalem , Jerusalem, Israel
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