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Lou W, Xie L, Xu L, Xu M, Xu F, Zhao Q, Jiang T. Present and future of metal nanoparticles in tumor ablation therapy. NANOSCALE 2023; 15:17698-17726. [PMID: 37917010 DOI: 10.1039/d3nr04362b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Cancer is an important factor affecting the quality of human life as well as causing death. Tumor ablation therapy is a minimally invasive local treatment modality with unique advantages in treating tumors that are difficult to remove surgically. However, due to its physical and chemical characteristics and the limitation of equipment technology, ablation therapy cannot completely kill all tumor tissues and cells at one time; moreover, it inevitably damages some normal tissues in the surrounding area during the ablation process. Therefore, this technology cannot be the first-line treatment for tumors at present. Metal nanoparticles themselves have good thermal and electrical conductivity and unique optical and magnetic properties. The combination of metal nanoparticles with tumor ablation technology, on the one hand, can enhance the killing and inhibiting effect of ablation technology on tumors by expanding the ablation range; on the other hand, the ablation technology changes the physicochemical microenvironment such as temperature, electric field, optics, oxygen content and pH in tumor tissues. It helps to stimulate the degree of local drug release of nanoparticles and increase the local content of anti-tumor drugs, thus forming a synergistic therapeutic effect with tumor ablation. Recent studies have found that some specific ablation methods will stimulate the body's immune response while physically killing tumor tissues, generating a large number of immune cells to cause secondary killing of tumor tissues and cells, and with the assistance of metal nanoparticles loaded with immune drugs, the effect of this anti-tumor immunotherapy can be further enhanced. Therefore, the combination of metal nanoparticles and ablative therapy has broad research potential. This review covers common metallic nanoparticles used for ablative therapy and discusses in detail their characteristics, mechanisms of action, potential challenges, and prospects in the field of ablation.
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Affiliation(s)
- Wenjing Lou
- Department of Ultrasound Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 31000, P. R. China.
| | - Liting Xie
- Department of Ultrasound Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 31000, P. R. China.
| | - Lei Xu
- Department of Ultrasound Medicine, Affiliated Jinhua Hospital Zhejiang University School of Medicine, Jinhua, Zhejiang, 321000, China
| | - Min Xu
- Department of Ultrasound Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 31000, P. R. China.
| | - Fan Xu
- Department of Ultrasound Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 31000, P. R. China.
| | - Qiyu Zhao
- Department of Ultrasound Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 31000, P. R. China.
| | - Tianan Jiang
- Department of Ultrasound Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 31000, P. R. China.
- Zhejiang University Cancer Center, Zhejiang, Hangzhou, China
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Boltman T, Meyer M, Ekpo O. Diagnostic and Therapeutic Approaches for Glioblastoma and Neuroblastoma Cancers Using Chlorotoxin Nanoparticles. Cancers (Basel) 2023; 15:3388. [PMID: 37444498 DOI: 10.3390/cancers15133388] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 05/04/2023] [Accepted: 05/06/2023] [Indexed: 07/15/2023] Open
Abstract
Glioblastoma multiforme (GB) and high-risk neuroblastoma (NB) are known to have poor therapeutic outcomes. As for most cancers, chemotherapy and radiotherapy are the current mainstay treatments for GB and NB. However, the known limitations of systemic toxicity, drug resistance, poor targeted delivery, and inability to access the blood-brain barrier (BBB), make these treatments less satisfactory. Other treatment options have been investigated in many studies in the literature, especially nutraceutical and naturopathic products, most of which have also been reported to be poorly effective against these cancer types. This necessitates the development of treatment strategies with the potential to cross the BBB and specifically target cancer cells. Compounds that target the endopeptidase, matrix metalloproteinase 2 (MMP-2), have been reported to offer therapeutic insights for GB and NB since MMP-2 is known to be over-expressed in these cancers and plays significant roles in such physiological processes as angiogenesis, metastasis, and cellular invasion. Chlorotoxin (CTX) is a promising 36-amino acid peptide isolated from the venom of the deathstalker scorpion, Leiurus quinquestriatus, demonstrating high selectivity and binding affinity to a broad-spectrum of cancers, especially GB and NB through specific molecular targets, including MMP-2. The favorable characteristics of nanoparticles (NPs) such as their small sizes, large surface area for active targeting, BBB permeability, etc. make CTX-functionalized NPs (CTX-NPs) promising diagnostic and therapeutic applications for addressing the many challenges associated with these cancers. CTX-NPs may function by improving diffusion through the BBB, enabling increased localization of chemotherapeutic and genotherapeutic drugs to diseased cells specifically, enhancing imaging modalities such as magnetic resonance imaging (MRI), single-photon emission computed tomography (SPECT), optical imaging techniques, image-guided surgery, as well as improving the sensitization of radio-resistant cells to radiotherapy treatment. This review discusses the characteristics of GB and NB cancers, related treatment challenges as well as the potential of CTX and its functionalized NP formulations as targeting systems for diagnostic, therapeutic, and theranostic purposes. It also provides insights into the potential mechanisms through which CTX crosses the BBB to bind cancer cells and provides suggestions for the development and application of novel CTX-based formulations for the diagnosis and treatment of GB and NB in the future.
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Affiliation(s)
- Taahirah Boltman
- Department of Medical Biosciences, University of the Western Cape, Robert Sobukwe Road, Bellville, Cape Town 7535, South Africa
| | - Mervin Meyer
- Department of Science and Innovation/Mintek Nanotechnology Innovation Centre, Biolabels Node, Department of Biotechnology, University of the Western Cape, Robert Sobukwe Road, Bellville, Cape Town 7535, South Africa
| | - Okobi Ekpo
- Department of Anatomy and Cellular Biology, College of Medicine and Health Sciences, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab Emirates
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Zhang YF, Li GL, Gao X, Zhang H, Zhang TB, Jiao WB, Chen XY, Zhu WJ, Liu XL, Fan HM. Method for Ferrite Nanomaterials-Mediated Cellular Magnetic Hyperthermia. ACS Biomater Sci Eng 2020; 6:6652-6660. [PMID: 33320607 DOI: 10.1021/acsbiomaterials.0c01443] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Magnetic hyperthermia (MH) mediated by magnetic nanoparticles is one of the most promising antitumor modalities. The past several decades have witnessed great progress for MH antitumor therapy in scientific trials and clinic applications since it was initially advanced by Gilchrist et al. The ultimate object of MH in vivo is to efficiently kill cancer cells, and hence, it is of great importance to develop an optimized cellular MH method to evaluate the therapeutic efficiency in vitro. In this study, we systematically studied the considerable affecting factors of cancer cell-killing efficiency during the cellular MH process, including the region of cell vessel positioned inside the alternating magnetic field copper coil, the magnetic field amplitude, the types of cancer cells, etc. Taking all these into account, we introduced a method for standardizing the cellular MH process to evaluate the cell-killing efficiency.
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Affiliation(s)
- Yi Fan Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, China
| | - Ga Long Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education; The College of Life Sciences, School of Medicine, Northwest University, Xi'an 710069, China
| | - Xiao Gao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education; The College of Life Sciences, School of Medicine, Northwest University, Xi'an 710069, China
| | - Huan Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, China
| | - Ting Bin Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, China
| | - Wang Bo Jiao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, China
| | - Xiao Yong Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, China
| | - Wen Jing Zhu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education; The College of Life Sciences, School of Medicine, Northwest University, Xi'an 710069, China
| | - Xiao Li Liu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education; The College of Life Sciences, School of Medicine, Northwest University, Xi'an 710069, China
| | - Hai Ming Fan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, China.,Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education; The College of Life Sciences, School of Medicine, Northwest University, Xi'an 710069, China
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Sadrolhosseini AR, Habibiasr M, Shafie S, Solaimani H, Lim HN. Optical and Thermal Properties of Laser-Ablated Platinum Nanoparticles Graphene Oxide Composite. Int J Mol Sci 2019; 20:E6153. [PMID: 31817593 PMCID: PMC6941075 DOI: 10.3390/ijms20246153] [Citation(s) in RCA: 10] [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: 08/05/2019] [Revised: 09/15/2019] [Accepted: 09/20/2019] [Indexed: 12/20/2022] Open
Abstract
Platinum nanoparticles were synthesized in graphene oxide aqueous solution using a laser ablation technique to investigate the effect of optical linear, nonlinear and thermal properties of platinum-graphene oxide nanocomposite solution. The samples were prepared with different ablation times. The platinum nanoparticles that formed a spherical shape on the surface of graphene oxide solution were authenticated using UV-visible spectrum and transmission electron microscopy patterns. The particle size decreased with increasing ablation time, and the concentration and volume fraction of samples were increased. To obtain the optical linear, nonlinear and thermal properties of platinum-graphene oxide nanocomposite solution, UV-visible spectroscopy, Z-scan, thermal lens and photoacoustic techniques were used. Consequently, the linear and nonlinear refractive indices increased with an increase in the volume fraction of platinum nanoparticles. It was observed from the spatial self-phase modulation patterns that, the optical nonlinear property of the graphene oxide was enhanced in the presence of platinum nanoparticles, and the nonlinearity increased with an increase in the volume fraction of platinum nanoparticles inside the graphene oxide solution. The thermal diffusivity and thermal effusivity of platinum nanoparticles graphene oxide were measured using a thermal lens and photoacoustic methods, respectively. The thermal diffusivity and thermal effusivity of samples were in the range of 0.0341 × 10-5 m2/s to 0.1223 × 10-5 m2/s and 0.163 W s1/2 cm-2 K-1 to 0.3192 W s1/2 cm-2 K-1, respectively. Consequently, the platinum enhanced the optical and thermal properties of graphene oxide.
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Affiliation(s)
- Amir Reza Sadrolhosseini
- Functional Device Laboratory (FDL), Institute of Advanced Technology, Universiti Putra Malaysia, Serdang, Selangor 43400UPM, Malaysia;
| | - Mina Habibiasr
- Department of Process and Food Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Selangor 43400UPM, Malaysia;
| | - Suhaidi Shafie
- Functional Device Laboratory (FDL), Institute of Advanced Technology, Universiti Putra Malaysia, Serdang, Selangor 43400UPM, Malaysia;
| | - Hassan Solaimani
- Department of Fundamental and Applied Science, Universiti Teknologi PETRONAS, Seri Iskandar 3175, Malaysia;
| | - Hong Ngee Lim
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor 43400UPM, Malaysia;
- Material Synthesis and Characterization Laboratory (MSCL), Institute of Advanced Technology, Universiti Putra Malaysia, Serdang, Selangor 43400UPM, Malaysia
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Hernández-Bule ML, Medel E, Colastra C, Roldán R, Úbeda A. Response of neuroblastoma cells to RF currents as a function of the signal frequency. BMC Cancer 2019; 19:889. [PMID: 31488097 PMCID: PMC6728948 DOI: 10.1186/s12885-019-6090-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 08/26/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Capacitive-resistive electric transfer (CRET) is a non-invasive therapeutic strategy that applies radiofrequency electric currents within the 400-600 kHz range to tissue repair and regeneration. Previous studies by our group have shown that 48 h of intermittent exposure to a 570 kHz CRET signal at a subthermal density of 50 μA/mm2 causes significant changes in the expression and activation of cell cycle control proteins, leading to cycle arrest in human cancer cell cultures. The present study investigates the relevance of the signal frequency in the response of the human neuroblastoma cell line NB69 to subthermal electric treatment with four different signal frequency currents within the 350-650 kHz range. METHODS Trypan blue assay, flow cytometry, immunofluorescence and immunoblot were used to study the effects of subthermal CRET currents on cell viability, cell cycle progression and the expression of several marker proteins involved in NB69 cell death and proliferation. RESULTS The results reveal that among the frequencies tested, only a 448 kHz signal elicited both proapoptotic and antiproliferative, statistically significant responses. The apoptotic effect would be due, at least in part, to significant changes induced by the 448 kHz signal in the expression of p53, Bax and caspase-3. The cytostatic response was preceded by alterations in the kinetics of the cell cycle and in the expression of proteins p-ERK1/2, cyclin D1 and p27, which is consistent with a potential involvement of the EGF receptor in electrically induced changes in the ERK1/2 pathway. This receives additional support from results indicating that the proapototic and antiproliferative responses to CRET can be transiently blocked when the electric stimulus is applied in the presence of PD98059, a chemical inhibitor of the ERK1/2 pathway. CONCLUSION The understanding of the mechanisms underlying the ability of slowing down cancer cell growth through electrically-induced changes in the expression of proteins involved in the control of cell proliferation and apoptosis might afford new insights in the field of oncology.
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Affiliation(s)
- María Luisa Hernández-Bule
- BEM-Research Service, Ramón y Cajal University Hospital - IRYCIS, Ctra. Colmenar Viejo km 9-100, 28034, Madrid, Spain.
| | - Enrique Medel
- BEM-Research Service, Ramón y Cajal University Hospital - IRYCIS, Ctra. Colmenar Viejo km 9-100, 28034, Madrid, Spain
| | - Clara Colastra
- BEM-Research Service, Ramón y Cajal University Hospital - IRYCIS, Ctra. Colmenar Viejo km 9-100, 28034, Madrid, Spain
| | - Raquel Roldán
- BEM-Research Service, Ramón y Cajal University Hospital - IRYCIS, Ctra. Colmenar Viejo km 9-100, 28034, Madrid, Spain
| | - Alejandro Úbeda
- BEM-Research Service, Ramón y Cajal University Hospital - IRYCIS, Ctra. Colmenar Viejo km 9-100, 28034, Madrid, Spain
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Pandey P, Sui M, Kunwar S, Pandit S, Gu Z, Lee J. Modification of dewetting characteristics for the improved morphology and optical properties of platinum nanostructures using a sacrificial indium layer. PLoS One 2018; 13:e0209803. [PMID: 30596722 PMCID: PMC6312214 DOI: 10.1371/journal.pone.0209803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 12/11/2018] [Indexed: 12/04/2022] Open
Abstract
Metal nanoparticles (NPs) fabricated by means of the solid state dewetting (SSD) approach are applicable in many optoelectronic, biomedical and catalytical applications. However, the fabrication of metallic NPs with the low diffusivity elements such as platinum (Pt) has been challenging for the well-defined configuration and uniformity due to the low diffusivity of Pt atoms and thus the optical properties suffer. In this paper, the evolution of well-defined configuration and improved uniformity of Pt NPs are demonstrated by the altered solid state dewetting (ASSD) approach using a sacrificial indium (In) layer. Upon annealing, the high diffusivity In atoms can lead to the formation of In-Pt alloy due to the inter-mixing at the interface and the dewetting process advances along with the enhanced diffusion of In-Pt alloy atoms. Eventually, well-defined Pt NPs are formed by means of complete desorption of In atoms by sublimation. By the control of In and Pt ratio in the bilayers with the fixed total thickness such as In4.5 nm/Pt1.5 nm, In3 nm/Pt3 nm, In1.5 nm/Pt4.5 nm, the isolated dome shaped Pt NPs of various size are demonstrated, which reflects the significant impact of In component in the dewetting process. The optical characterization of Pt NPs exhibits the formation of quadrupolar resonance and strong dipolar resonance bands in the UV and VIS regions respectively, which are tunable based on the morphology of Pt NPs. In specific, the dipolar resonance peaks demonstrate a red shifting behavior with the increment of size of Pt NPs and gradually become narrower along with the improvement of uniformity of Pt NPs.
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Affiliation(s)
- Puran Pandey
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu Seoul, South Korea
| | - Mao Sui
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu Seoul, South Korea
| | - Sundar Kunwar
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu Seoul, South Korea
| | - Sanchaya Pandit
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu Seoul, South Korea
| | - Zenan Gu
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu Seoul, South Korea
| | - Jihoon Lee
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu Seoul, South Korea
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Chaurasia AK, Thorat ND, Tandon A, Kim JH, Park SH, Kim KK. Coupling of radiofrequency with magnetic nanoparticles treatment as an alternative physical antibacterial strategy against multiple drug resistant bacteria. Sci Rep 2016; 6:33662. [PMID: 27670157 PMCID: PMC5037373 DOI: 10.1038/srep33662] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 08/30/2016] [Indexed: 01/07/2023] Open
Abstract
Antibiotic resistant bacteria not only affect human health and but also threatens the safety in hospitals and among communities. However, the emergence of drug resistant bacteria is inevitable due to evolutionary selection as a consequence of indiscriminate antibiotic usage. Therefore, it is necessary to develop a novel strategy by which pathogenic bacteria can be eliminated without triggering resistance. We propose a novel magnetic nanoparticle-based physical treatment against pathogenic bacteria, which blocks biofilm formation and kills bacteria. In this approach, multiple drug resistant Staphylococcus aureus USA300 and uropathogenic Escherichia coli CFT073 are trapped to the positively charged magnetic core-shell nanoparticles (MCSNPs) by electrostatic interaction. All the trapped bacteria can be completely killed within 30 min owing to the loss of membrane potential and dysfunction of membrane-associated complexes when exposed to the radiofrequency current. These results indicate that MCSNP-based physical treatment can be an alternative antibacterial strategy without leading to antibiotic resistance, and can be used for many purposes including environmental and therapeutic applications.
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Affiliation(s)
- Akhilesh K Chaurasia
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon 16419, Korea
| | - Nanasaheb D Thorat
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon 16419, Korea
| | - Anshula Tandon
- Departments of Physics, Sungkyunkwan University, Suwon 16419, Korea.,Sungkyunkwan Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Korea
| | - Jin-Hahn Kim
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon 16419, Korea
| | - Sung Ha Park
- Departments of Physics, Sungkyunkwan University, Suwon 16419, Korea.,Sungkyunkwan Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Korea
| | - Kyeong Kyu Kim
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon 16419, Korea.,Sungkyunkwan Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Korea
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Beik J, Abed Z, Ghoreishi FS, Hosseini-Nami S, Mehrzadi S, Shakeri-Zadeh A, Kamrava SK. Nanotechnology in hyperthermia cancer therapy: From fundamental principles to advanced applications. J Control Release 2016; 235:205-221. [DOI: 10.1016/j.jconrel.2016.05.062] [Citation(s) in RCA: 333] [Impact Index Per Article: 41.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 05/28/2016] [Accepted: 05/30/2016] [Indexed: 01/05/2023]
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Postnikov A, Moldosanov K. Phonon-Assisted Radiofrequency Absorption by Gold Nanoparticles Resulting in Hyperthermia. NATO SCIENCE FOR PEACE AND SECURITY SERIES B: PHYSICS AND BIOPHYSICS 2016. [DOI: 10.1007/978-94-017-7478-9_9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Radio frequency responsive nano-biomaterials for cancer therapy. J Control Release 2015; 204:85-97. [DOI: 10.1016/j.jconrel.2015.02.036] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 02/27/2015] [Accepted: 02/28/2015] [Indexed: 12/25/2022]
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San BH, Kim JA, Kulkarni A, Moh SH, Dugasani SR, Subramani VK, Thorat ND, Lee HH, Park SH, Kim T, Kim KK. Combining protein-shelled platinum nanoparticles with graphene to build a bionanohybrid capacitor. ACS NANO 2014; 8:12120-12129. [PMID: 25426677 DOI: 10.1021/nn503178t] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The electronic properties of biomolecules and their hybrids with inorganic materials can be utilized for the fabrication of nanoelectronic devices. Here, we report the charge transport behavior of protein-shelled inorganic nanoparticles combined with graphene and demonstrate their possible application as a bionanohybrid capacitor. The conductivity of PepA, a bacterial aminopeptidase used as a protein shell (PS), and the platinum nanoparticles (PtNPs) encapsulated by PepA was measured using a field effect transistor (FET) and a graphene-based FET (GFET). Furthermore, we confirmed that the electronic properties of PepA-PtNPs were controlled by varying the size of the PtNPs. The use of two poly(methyl methacrylate) (PMMA)-coated graphene layers separated by PepA-PtNPs enabled us to build a bionanohybrid capacitor with tunable properties. The combination of bioinorganic nanohybrids with graphene is regarded as the cornerstone for developing flexible and biocompatible bionanoelectronic devices that can be integrated into bioelectric circuits for biomedical purposes.
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Affiliation(s)
- Boi Hoa San
- Sungkyunkwan Advanced Institute of Nanotechnology, Sungkyunkwan University , Suwon 440-746, Republic of Korea
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Anti-cancer, pharmacokinetics and tumor localization studies of pH-, RF- and thermo-responsive nanoparticles. Int J Biol Macromol 2014; 74:249-62. [PMID: 25526695 DOI: 10.1016/j.ijbiomac.2014.11.044] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 11/22/2014] [Accepted: 11/25/2014] [Indexed: 11/21/2022]
Abstract
The curcumin-encapsulated chitosan-graft-poly(N-vinyl caprolactam) nanoparticles containing gold nanoparticles (Au-CRC-TRC-NPs) were developed by ionic cross-linking method. After "optimum RF exposure" at 40 W for 5 min, Au-CRC-TRC-NPs dissipated heat energy in the range of ∼42°C, the lower critical solution temperature (LCST) of chitosan-graft-poly(N-vinyl caprolactam), causing controlled curcumin release and apoptosis to cancer cells. Further, in vivo PK/PD studies on swiss albino mice revealed that Au-CRC-TRC-NPs could be sustained in circulation for a week with no harm to internal organs. The colon tumor localization studies revealed that Au-CRC-TRC-NPs were retained in tumor for a week. These results throw light on their feasibility as multi-responsive nanomedicine for RF-assisted cancer treatment modalities.
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San BH, Ha EJ, Paik HJ, Kim KK. Radiofrequency treatment enhances the catalytic function of an immobilized nanobiohybrid catalyst. NANOSCALE 2014; 6:6009-6017. [PMID: 24777448 DOI: 10.1039/c4nr00407h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Biocatalysis, the use of enzymes in chemical transformation, has undergone intensive development for a wide range of applications. As such, maximizing the functionality of enzymes for biocatalysis is a major priority to enable industrial use. To date, many innovative technologies have been developed to address the future demand of enzymes for these purposes, but maximizing the catalytic activity of enzymes remains a challenge. In this study, we demonstrated that the functionality of a nanobiocatalyst could be enhanced by combining immobilization and radiofrequency (RF) treatment. Aminopeptidase PepA-encapsulating 2 nm platinum nanoparticles (PepA-PtNPs) with the catalytic activities of hydrolysis and hydrogenation were employed as multifunctional nanobiocatalysts. Immobilizing the nanobiocatalysts in a hydrogel using metal chelation significantly enhanced their functionalities, including catalytic power, thermal-stability, pH tolerance, organic solvent tolerance, and reusability. Most importantly, RF treatment of the hydrogel-immobilized PepA-PtNPs increased their catalytic power by 2.5 fold greater than the immobilized PepA. Our findings indicate that the catalytic activities and functionalities of PepA-PtNPs are greatly enhanced by the combination of hydrogel-immobilization and RF treatment. Based on our findings, we propose that RF treatment of nanobiohybrid catalysts immobilized on the bulk hydrogel represents a new strategy for achieving efficient biocatalysis.
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Affiliation(s)
- Boi Hoa San
- Sungkyunkwan Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 440-746, Korea
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15
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Multifaceted chitin/poly(lactic-co-glycolic) acid composite nanogels. Int J Biol Macromol 2014; 67:279-88. [DOI: 10.1016/j.ijbiomac.2014.03.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 03/05/2014] [Accepted: 03/15/2014] [Indexed: 11/23/2022]
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Molecular mechanisms underlying antiproliferative and differentiating responses of hepatocarcinoma cells to subthermal electric stimulation. PLoS One 2014; 9:e84636. [PMID: 24416255 PMCID: PMC3885594 DOI: 10.1371/journal.pone.0084636] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Accepted: 11/15/2013] [Indexed: 11/19/2022] Open
Abstract
Capacitive Resistive Electric Transfer (CRET) therapy applies currents of 0.4–0.6 MHz to treatment of inflammatory and musculoskeletal injuries. Previous studies have shown that intermittent exposure to CRET currents at subthermal doses exert cytotoxic or antiproliferative effects in human neuroblastoma or hepatocarcinoma cells, respectively. It has been proposed that such effects would be mediated by cell cycle arrest and by changes in the expression of cyclins and cyclin-dependent kinase inhibitors. The present work focuses on the study of the molecular mechanisms involved in CRET-induced cytostasis and investigates the possibility that the cellular response to the treatment extends to other phenomena, including induction of apoptosis and/or of changes in the differentiation stage of hepatocarcinoma cells. The obtained results show that the reported antiproliferative action of intermittent stimulation (5 m On/4 h Off) with 0.57 MHz, sine wave signal at a current density of 50 µA/mm2, could be mediated by significant increase of the apoptotic rate as well as significant changes in the expression of proteins p53 and Bcl-2. The results also revealed a significantly decreased expression of alpha-fetoprotein in the treated samples, which, together with an increased concentration of albumin released into the medium by the stimulated cells, can be interpreted as evidence of a transient cytodifferentiating response elicited by the current. The fact that this type of electrical stimulation is capable of promoting both, differentiation and cell cycle arrest in human cancer cells, is of potential interest for a possible extension of the applications of CRET therapy towards the field of oncology.
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Goya GF, Asín L, Ibarra MR. Cell death induced by AC magnetic fields and magnetic nanoparticles: Current state and perspectives. Int J Hyperthermia 2013; 29:810-8. [DOI: 10.3109/02656736.2013.838646] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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