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Li Y, Lv C, Li Z, Chen C, Cheng Y. Magnetic modulation of lysosomes for cancer therapy. Wiley Interdiscip Rev Nanomed Nanobiotechnol 2024; 16:e1947. [PMID: 38488191 DOI: 10.1002/wnan.1947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 02/06/2024] [Accepted: 02/07/2024] [Indexed: 03/19/2024]
Abstract
Lysosomes play a central role in biochemical signal transduction and oxidative stress in cells. Inducing lysosome membrane penetration (LMP) to cause lysosomal-dependent cell death (LCD) in tumor cells is an effective strategy for cancer therapy. Chemical drugs can destroy the stability of lysosomes by neutralizing protons within the lysosomes or enhancing the fragility of the lysosomal membranes. However, there remain several unsolved problems of traditional drugs in LMP induction due to insufficient lysosomal targeting, fast metabolism, and toxicity in normal cells. With the development of nanotechnology, magnetic nanoparticles have been demonstrated to target lysosomes naturally, providing a versatile tool for lysosomal modulation. Combined with excellent tissue penetration and spatiotemporal manipulability of magnetic fields, magnetic modulation of lysosomes progresses rapidly in inducing LMP and LCD for cancer therapy. This review comprehensively discussed the strategies of magnetic modulation of lysosomes for cancer therapy. The intrinsic mechanisms of LMP-induced LCD were first introduced. Then, the modulation of lysosomes by diverse physical outputs of magnetic fields was emphatically discussed. Looking forward, this review will shed the light on the prospect of magnetic modulation of lysosomes, inspiring future research of magnetic modulation strategy in cancer therapy. This article is categorized under: Therapeutic Approaches and Drug Discovery > Emerging Technologies Therapeutic Approaches and Drug Discovery > Nanomedicine for Oncologic Disease Nanotechnology Approaches to Biology > Nanoscale Systems in Biology.
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Affiliation(s)
- Yingze Li
- Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Clinical Research Center for Anesthesiology and Perioperative Medicine, School of Medicine, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital, Tongji University, Shanghai, China
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Cheng Lv
- Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Clinical Research Center for Anesthesiology and Perioperative Medicine, School of Medicine, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital, Tongji University, Shanghai, China
| | - Zhenguang Li
- Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Clinical Research Center for Anesthesiology and Perioperative Medicine, School of Medicine, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital, Tongji University, Shanghai, China
| | - Chang Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yu Cheng
- Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Clinical Research Center for Anesthesiology and Perioperative Medicine, School of Medicine, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital, Tongji University, Shanghai, China
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2
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Zhang F, Zhang Z, Zhao Y, Du C, Li Y, Gao J, Ren X, Ma T, Li B, Bu Y. Redox-Regulated Magnetic Conversions between Ferro- and Antiferromagnetism in Organic Nitroxide Diradicals. Molecules 2023; 28:6232. [PMID: 37687060 PMCID: PMC10488413 DOI: 10.3390/molecules28176232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/07/2023] [Accepted: 08/21/2023] [Indexed: 09/10/2023] Open
Abstract
Redox-induced magnetic transformation in organic diradicals is an appealing phenomenon. In this study, we theoretically designed twelve couples of diradicals in which two nitroxide (NO) radical groups are connected to the redox-active couplers including p-benzoquinonyl, 1,4-naphthoquinyl, 9,10-anthraquinonyl, naphthacene-5,12-dione, pentacene-6,13-dione, hexacene-6,15-dione, pyrazinyl, quinoxalinyl, phenazinyl, 5,12-diazanaphthacene, 6,13-diazapentacene, and 6,15-diazahexacene. As evidenced at both the B3LYP and M06-2X levels of theory, the calculations reveal that the magnetic reversal can take place from ferromagnetism to antiferromagnetism, or vice versa, by means of redox method in these designed organic magnetic molecules. It was observed that p-benzoquinonyl, 1,4-naphthoquinyl, 9,10-anthraquinonyl, naphthacene-5,12-dione, pentacene-6,13-dione, and hexacene-6,15-dione-bridged NO diradicals produce antiferromagnetism while their dihydrogenated counterparts exhibit ferromagnetism. Similarly, pyrazinyl, quinoxalinyl, phenazinyl, 5,12-diazanaphthacene, 6,13-diazapentacene, and 6,15-diazahexacene-bridged NO diradicals present ferromagnetism while their dihydrogenated counterparts show antiferromagnetism. The differences in the magnetic behaviors and magnetic magnitudes of each of the twelve couples of diradicals could be attributed to their distinctly different spin-interacting pathways. It was found that the nature of the coupler and the length of the coupling path are important factors in controlling the magnitude of the magnetic exchange coupling constant J. Specifically, smaller HOMO-LUMO (HOMO: highest occupied molecular orbital, LUMO: lowest unoccupied molecular orbital) gaps of the couplers and shorter coupler lengths, as well as shorter linking bond lengths, can attain stronger magnetic interactions. In addition, a diradical with an extensively π-conjugated structure is beneficial to spin transport and can effectively promote magnetic coupling, yielding a large |J| accordingly. That is, a larger spin polarization can give rise to a stronger magnetic interaction. The sign of J for these studied diradicals can be predicted from the spin alternation rule, the shape of the singly occupied molecular orbitals (SOMOs), and the SOMO-SOMO energy gaps of the triplet state. This study paves the way for the rational design of magnetic molecular switches.
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Affiliation(s)
- Fengying Zhang
- Department of Materials Science and Engineering, Jinzhong University, Jinzhong 030619, China; (C.D.); (Y.L.); (J.G.); (X.R.); (T.M.); (B.L.)
- Shanxi Province Collaborative Innovation Center for Light Materials Modification and Application, Jinzhong 030619, China
| | - Zijun Zhang
- Department of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, China;
| | - Yali Zhao
- Department of Materials Science and Engineering, Jinzhong University, Jinzhong 030619, China; (C.D.); (Y.L.); (J.G.); (X.R.); (T.M.); (B.L.)
- Shanxi Province Collaborative Innovation Center for Light Materials Modification and Application, Jinzhong 030619, China
| | - Chao Du
- Department of Materials Science and Engineering, Jinzhong University, Jinzhong 030619, China; (C.D.); (Y.L.); (J.G.); (X.R.); (T.M.); (B.L.)
- Shanxi Province Collaborative Innovation Center for Light Materials Modification and Application, Jinzhong 030619, China
| | - Yong Li
- Department of Materials Science and Engineering, Jinzhong University, Jinzhong 030619, China; (C.D.); (Y.L.); (J.G.); (X.R.); (T.M.); (B.L.)
- Shanxi Province Collaborative Innovation Center for Light Materials Modification and Application, Jinzhong 030619, China
| | - Jiaqi Gao
- Department of Materials Science and Engineering, Jinzhong University, Jinzhong 030619, China; (C.D.); (Y.L.); (J.G.); (X.R.); (T.M.); (B.L.)
- Shanxi Province Collaborative Innovation Center for Light Materials Modification and Application, Jinzhong 030619, China
| | - Xiaobo Ren
- Department of Materials Science and Engineering, Jinzhong University, Jinzhong 030619, China; (C.D.); (Y.L.); (J.G.); (X.R.); (T.M.); (B.L.)
- Shanxi Province Collaborative Innovation Center for Light Materials Modification and Application, Jinzhong 030619, China
| | - Teng Ma
- Department of Materials Science and Engineering, Jinzhong University, Jinzhong 030619, China; (C.D.); (Y.L.); (J.G.); (X.R.); (T.M.); (B.L.)
- Shanxi Province Collaborative Innovation Center for Light Materials Modification and Application, Jinzhong 030619, China
| | - Boqiong Li
- Department of Materials Science and Engineering, Jinzhong University, Jinzhong 030619, China; (C.D.); (Y.L.); (J.G.); (X.R.); (T.M.); (B.L.)
- Shanxi Province Collaborative Innovation Center for Light Materials Modification and Application, Jinzhong 030619, China
| | - Yuxiang Bu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China;
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Aman G, Lysevych M, Tan HH, Jagadish C, Schmitzer H, Fränzl M, Cahay M, Wagner HP. Lasing in Zn-doped GaAs nanowires on an iron film. Nanotechnology 2023; 34. [PMID: 37473744 DOI: 10.1088/1361-6528/ace914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 07/20/2023] [Indexed: 07/22/2023]
Abstract
In this work, we demonstrate optically pumped lasing in highly Zn-doped GaAs nanowires (NWs) lying on an iron film. The conically shaped NWs are first covered with an 8 nm thick Al2O3film to prevent atmospheric oxidation and mitigate band-bending effects. Multimode and single-mode lasing have been observed for NWs with a length greater or smaller than 2μm, respectively. Finite difference time domain calculations reveal a weak electric field enhancement in the Al2O3layer at the NW/iron film interface for the lasing modes. The high Zn acceptor concentration in the NWs provides enhanced radiative efficiency and enables lasing on the iron film despite plasmonic losses. Our results open avenues for integrating NW lasers on ferromagnetic substrates to achieve new functionalities, such as magnetic field-induced modulation.
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Affiliation(s)
- Gyanan Aman
- Department of Electrical and Computer Engineering, University of Cincinnati, Cincinnati, OH 45221, United States of America
| | - Mykhaylo Lysevych
- Department of Electronic Materials Engineering, ARC Center of Excellence for Transformative Meta-Optical Systems, Research School of Physics, The Australian National University, Canberra, ACT 2600, Australia
| | - Hark Hoe Tan
- Department of Electronic Materials Engineering, ARC Center of Excellence for Transformative Meta-Optical Systems, Research School of Physics, The Australian National University, Canberra, ACT 2600, Australia
| | - Chennupati Jagadish
- Department of Electronic Materials Engineering, ARC Center of Excellence for Transformative Meta-Optical Systems, Research School of Physics, The Australian National University, Canberra, ACT 2600, Australia
| | - Heidrun Schmitzer
- Department of Physics, Xavier University, Cincinnati, OH 45207, United States of America
| | - Martin Fränzl
- Department of Physics, University of Leipzig, D-04109, Germany
| | - Marc Cahay
- Department of Electrical and Computer Engineering, University of Cincinnati, Cincinnati, OH 45221, United States of America
| | - Hans Peter Wagner
- Department of Electrical and Computer Engineering, University of Cincinnati, Cincinnati, OH 45221, United States of America
- Department of Physics, University of Cincinnati, Cincinnati, OH 45221, United States of America
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Jones Z, Niemuth NJ, Zhang Y, Protter CR, Kinsley PC, Klaper RD, Hamers RJ. Use of Magnetic Modulation of Nitrogen-Vacancy Center Fluorescence in Nanodiamonds for Quantitative Analysis of Nanoparticles in Organisms. ACS Meas Sci Au 2022; 2:351-360. [PMID: 35996538 PMCID: PMC9390786 DOI: 10.1021/acsmeasuresciau.2c00006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The fluorescence intensity emitted by nitrogen-vacancy (NV) centers in diamond nanoparticles can be readily modulated by the application of a magnetic field using a small electromagnet. By acquiring interleaved images acquired in the presence and absence of the magnetic field and performing digital subtraction, the fluorescence intensity of the NV nanodiamond can be isolated from scattering and autofluorescence even when these backgrounds are changing monotonically during the experiments. This approach has the potential to enable the robust identification of nanodiamonds in organisms and other complex environments. Yet, the practical application of magnetic modulation imaging to realistic systems requires the use of quantitative analysis methods based on signal-to-noise considerations. Here, we describe the use of magnetic modulation to analyze the uptake of diamond nanoparticles from an aqueous environment into Caenorhabditis elegans, used here as a model system for identification and quantification of nanodiamonds in complex matrices. Based on the observed signal-to-noise ratio of sets of digitally subtracted images, we show that nanodiamonds can be identified on an individual pixel basis with a >99.95% confidence. To determine whether surface functionalization of the nanodiamond significantly impacted uptake, we used this approach to analyze the presence of nanodiamonds in C. elegans that had been exposed to these functionalized nanodiamonds in the water column, with uptake likely occurring by ingestion. In each case, the images show a significant nanoparticle uptake. However, differences in uptake between the three ligands were not outside of the experimental error, indicating that additional factors beyond the surface charge are important factors controlling uptake. Analysis of the number of pixels above the threshold in individual C. elegans organisms revealed distributions that deviate significantly from a Poisson distribution, suggesting that uptake of nanoparticles may not be a statistically independent event. The results presented here demonstrate that magnetic modulation combined with quantitative analysis of the resulting images can be used to robustly characterize nanoparticle uptake into organisms.
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Affiliation(s)
- Zachary
R. Jones
- Department
of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Nicholas J. Niemuth
- School
of Freshwater Sciences, University of Wisconsin−Milwaukee, 600 E. Greenfield Avenue, Milwaukee, Wisconsin 53204, United States
| | - Yongqian Zhang
- Department
of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Connor R. Protter
- Department
of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Paige C. Kinsley
- Department
of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Rebecca D. Klaper
- School
of Freshwater Sciences, University of Wisconsin−Milwaukee, 600 E. Greenfield Avenue, Milwaukee, Wisconsin 53204, United States
| | - Robert J. Hamers
- Department
of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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5
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Huang M, Wang L, Li X, Wu Z, Zhao B, Pei K, Liu X, Zhang X, Che R. Magnetic Interacted Interaction Effect in MXene Skeleton: Enhanced Thermal-Generation for Electromagnetic Interference Shielding. Small 2022; 18:e2201587. [PMID: 35676238 DOI: 10.1002/smll.202201587] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 05/04/2022] [Indexed: 06/15/2023]
Abstract
With the rapid advancements of portable and wearable equipment, high-efficiency electromagnetic interference (EMI) shielding materials are highly entailed to eliminate radiated electromagnetic pollution. Herein, by assembling hexagonal SrFe12 O19 flakes into a Ti3 C2 Tx MXene/MWCNT substrate, a magnetized Ti3 C2 Tx -based film is successfully fabricated by a facile filtration approach. Carbon nanotubes are used as isolation agents to realize the submicroscopic dispersion of MXene and SrFe12 O19 . The obtained MXene/MWCNTs/SrFe12 O19 film shows a high electrical conductivity of 438 S cm-1 and an excellent EMI shielding effectiveness of 62.9 dB in X-band at a thickness of only 40 µm. Benefiting from a strong magnetic response ability and an expanded magnetic coupling space, hexagonal SrFe12 O19 sheets can efficiently consume incident magnetic field energy by domain wall migration and the ferromagnetic resonance effect. Boosted EMI shielding performance can be achieved by improving the magnetic loss in the Ti3 C2 Tx MXene/MWCNTs/SrFe12 O19 film, preventing the secondary reflection of electromagnetic waves. Meanwhile, magnetized MXene-based films display the freestanding and flexible features and are suitable for installation in electric devices. It is anticipated that this strategy offers new ideas for designing EMI shielding films and in broadening potential utility of MXene-based materials.
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Affiliation(s)
- Mengqiu Huang
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Department of Materials Science, Fudan University, Shanghai, 200438, P. R. China
| | - Lei Wang
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Department of Materials Science, Fudan University, Shanghai, 200438, P. R. China
| | - Xiao Li
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Department of Materials Science, Fudan University, Shanghai, 200438, P. R. China
| | - Zhengchen Wu
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Department of Materials Science, Fudan University, Shanghai, 200438, P. R. China
| | - Biao Zhao
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Department of Materials Science, Fudan University, Shanghai, 200438, P. R. China
| | - Ke Pei
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Department of Materials Science, Fudan University, Shanghai, 200438, P. R. China
| | - Xianhu Liu
- Key Laboratory of Materials Processing and Mold, Zhengzhou University, Ministry of Education, Zhengzhou, 450002, P. R. China
| | - Xuefeng Zhang
- Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310012, P. R. China
| | - Renchao Che
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Department of Materials Science, Fudan University, Shanghai, 200438, P. R. China
- Joint-Research Center for Computational Materials, Zhejiang Laboratory, Hangzhou, 311100, P. R. China
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Yin B, Ho WKH, Zhang Q, Li C, Huang Y, Yan J, Yang H, Hao J, Wong SHD, Yang M. Magnetic-Responsive Surface-Enhanced Raman Scattering Platform with Tunable Hot Spot for Ultrasensitive Virus Nucleic Acid Detection. ACS Appl Mater Interfaces 2022; 14:4714-4724. [PMID: 35081679 DOI: 10.1021/acsami.1c21173] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Surface-enhanced Raman scattering (SERS)-based biosensors are promising tools for virus nucleic acid detection. However, it remains challenging for SERS-based biosensors using a sandwiching strategy to detect long-chain nucleic acids such as nucleocapsid (N) gene of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) because the extension of the coupling distance (CD) between the two tethered metallic nanostructures weakens electric field and SERS signals. Herein, we report a magnetic-responsive substrate consisting of heteoronanostructures that controls the CD for ultrasensitive and highly selective detection of the N gene of SARS-CoV-2. Significantly, our findings show that this platform reversibly shortens the CD and enhances SERS signals with a 10-fold increase in the detection limit from 1 fM to 100 aM, compared to those without magnetic modulation. The optical simulation that emulates the CD shortening process confirms the CD-dependent electric field strength and further supports the experimental results. Our study provides new insights into designing a stimuli-responsive SERS-based platform with tunable hot spots for long-chain nucleic acid detection.
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Affiliation(s)
- Bohan Yin
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China
| | - Willis Kwun Hei Ho
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China
| | - Qin Zhang
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China
| | - Chuanqi Li
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China
| | - Yingying Huang
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China
| | - Jiaxiang Yan
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China
| | - Hongrong Yang
- Department of Bioengineering, College of Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Jianhua Hao
- Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China
| | - Siu Hong Dexter Wong
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China
| | - Mo Yang
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China
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Avivi-Mintz S, Lustig Y, Indenbaum V, Schwartz E, Danielli A. Highly Sensitive and Specific SARS-CoV-2 Serological Assay Using a Magnetic Modulation Biosensing System. Biosensors (Basel) 2021; 12:7. [PMID: 35049635 PMCID: PMC8773989 DOI: 10.3390/bios12010007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/05/2021] [Accepted: 12/08/2021] [Indexed: 06/14/2023]
Abstract
Sensitive serological assays are needed to provide valuable information about acute and past viral infections. For example, detection of anti-severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) IgG antibodies could serve as the basis for an "immunity passport" that would enable individuals to travel internationally. Here, utilizing a novel Magnetic Modulation Biosensing (MMB) system and the receptor-binding domain of the SARS-CoV-2 spike protein, we demonstrate a highly sensitive and specific anti-SARS-CoV-2 IgG serological assay. Using anti-SARS-CoV-2 IgG antibodies, RT-qPCR SARS-CoV-2-positive and healthy patients' samples, and vaccinees' samples, we compare the MMB-based SARS-CoV-2 IgG assay's analytical and clinical sensitivities to those of the enzyme-linked immunosorbent assay (ELISA). Compared with ELISA, the MMB-based assay has an ~6-fold lower limit of detection (129 ng/L vs. 817 ng/L), and it detects an increase in the IgG concentration much earlier after vaccination. Using 85 RT-qPCR SARS-CoV-2-positive samples and 79 -negative samples, the MMB-based assay demonstrated similar clinical specificity (98% vs. 99%) and sensitivity (93% vs. 92%) to the ELISA test, but with a much faster turnaround time (45 min vs. 245 min). The high analytical and clinical sensitivity, short turnaround time, and simplicity of the MMB-based assay makes it a preferred method for antibody detection.
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Affiliation(s)
- Shira Avivi-Mintz
- Faculty of Engineering, The Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Max and Anna Webb Street, Ramat Gan 5290002, Israel;
| | - Yaniv Lustig
- Central Virology Laboratory, Israel Ministry of Health, Chaim Sheba Medical Center, Tel-HaShomer, Ramat Gan 5262000, Israel; (Y.L.); (V.I.)
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel;
| | - Victoria Indenbaum
- Central Virology Laboratory, Israel Ministry of Health, Chaim Sheba Medical Center, Tel-HaShomer, Ramat Gan 5262000, Israel; (Y.L.); (V.I.)
| | - Eli Schwartz
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel;
- The Center for Geographic Medicine, Chaim Sheba Medical Center, Tel-Hashomer, Ramat Gan 5262000, Israel
| | - Amos Danielli
- Faculty of Engineering, The Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Max and Anna Webb Street, Ramat Gan 5290002, Israel;
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Ley S, Sachs J, Faenger B, Hilger I, Helbig M. MNP-Enhanced Microwave Medical Imaging by Means of Pseudo-Noise Sensing. Sensors (Basel) 2021; 21:s21196613. [PMID: 34640933 PMCID: PMC8512575 DOI: 10.3390/s21196613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/16/2021] [Accepted: 09/25/2021] [Indexed: 12/16/2022]
Abstract
Magnetic nanoparticles have been investigated for microwave imaging over the last decade. The use of functionalized magnetic nanoparticles, which are able to accumulate selectively within tumorous tissue, can increase the diagnostic reliability. This paper deals with the detecting and imaging of magnetic nanoparticles by means of ultra-wideband microwave sensing via pseudo-noise technology. The investigations were based on phantom measurements. In the first experiment, we analyzed the detectability of magnetic nanoparticles depending on the magnetic field intensity of the polarizing magnetic field, as well as the viscosity of the target and the surrounding medium in which the particles were embedded, respectively. The results show a nonlinear behavior of the magnetic nanoparticle response depending on the magnetic field intensity for magnetic nanoparticles diluted in distilled water and for magnetic nanoparticles embedded in a solid medium. Furthermore, the maximum amplitude of the magnetic nanoparticles responses varies for the different surrounding materials of the magnetic nanoparticles. In the second experiment, we investigated the influence of the target position on the three-dimensional imaging of the magnetic nanoparticles in a realistic measurement setup for breast cancer imaging. The results show that the magnetic nanoparticles can be detected successfully. However, the intensity of the particles in the image depends on its position due to the path-dependent attenuation, the inhomogeneous microwave illumination of the breast, and the inhomogeneity of the magnetic field. Regarding the last point, we present an approach to compensate for the inhomogeneity of the magnetic field by computing a position-dependent correction factor based on the measured magnetic field intensity and the magnetic susceptibility of the magnetic particles. Moreover, the results indicate an influence of the polarizing magnetic field on the measured ultra-wideband signals even without magnetic nanoparticles. Such a disturbing influence of the polarizing magnetic field on the measurements should be reduced for a robust magnetic nanoparticles detection. Therefore, we analyzed the two-state (ON/OFF) and the sinusoidal modulation of the external magnetic field concerning the detectability of the magnetic nanoparticles with respect to these spurious effects, as well as their practical application.
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Affiliation(s)
- Sebastian Ley
- Biosignal Processing Group, Technische Universität Ilmenau, 98693 Ilmenau, Germany;
- Correspondence: ; Tel.: +49-3677-691308
| | - Jürgen Sachs
- Electronic Measurements and Signal Processing Group, Technische Universität Ilmenau, 98693 Ilmenau, Germany;
- ILMSENS GmbH, 98693 Ilmenau, Germany
| | - Bernd Faenger
- Institute of Diagnostic and Interventional Radiology, Jena University Hospital, Friedrich Schiller University Jena, 07747 Jena, Germany; (B.F.); (I.H.)
| | - Ingrid Hilger
- Institute of Diagnostic and Interventional Radiology, Jena University Hospital, Friedrich Schiller University Jena, 07747 Jena, Germany; (B.F.); (I.H.)
| | - Marko Helbig
- Biosignal Processing Group, Technische Universität Ilmenau, 98693 Ilmenau, Germany;
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9
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Son C, Ju H. Magnetic Control of Optical Reflectance from Metallic Thin Film Using Surface Plasmon Resonance and Faraday Rotation. Materials (Basel) 2021; 14:3354. [PMID: 34204399 PMCID: PMC8234373 DOI: 10.3390/ma14123354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/13/2021] [Accepted: 06/15/2021] [Indexed: 11/17/2022]
Abstract
We demonstrate magnetic control of optical reflectance with no ferromagnetic material via combining the Faraday rotation and the surface plasmon resonance (SPR) in a Kretschman configuration under magnetic fields < 0.5 T. The SPR produces the polarization sensitive reflectance from the Au or Ag thin film coated on a N-BK7 prism in which the Faraday rotation occurs. The gold (Au) or silver (Ag) metal film as a plasmonic film somewhat acts as an incident angle-dependent reflection polarizer that can sensitively sense the polarization change induced by the Faraday rotation that occurs in a prism. We find that combination of Faraday rotation and the surface plasmon can induce a significant magnetic modulation of reflectance normalized with respect to that obtained with no magnetic fields at a specific incident angle of light. The magnetic control of optical reflectance presented may find an application in polarizer-free photonic devices with no ferromagnetic material for magneto-optical modulation.
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Affiliation(s)
| | - Heongkyu Ju
- Department of Physics, Gachon University, Seongnam-si 13120, Gyeonggi-do, Korea;
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Hsieh FJ, Chen YW, Hui YY, Lin CH, Chang HC. Quantification and Imaging of Antigens on Cell Surface with Lipid-Encapsulated Fluorescent Nanodiamonds. Micromachines (Basel) 2019; 10:mi10050304. [PMID: 31064085 PMCID: PMC6562960 DOI: 10.3390/mi10050304] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 04/29/2019] [Accepted: 04/30/2019] [Indexed: 01/23/2023]
Abstract
Quantifying the density and locating the position of antigens on cell surface has been a challenge in molecular biology research. The challenge lies in the need for a chemically and photophysically stable fluorophore to achieve the required sensitivity and accuracy. Here, we present a method suitable for the purpose by using lipid-encapsulated fluorescent nanodiamonds (FNDs) of 35 nm in diameter as biolabels. The encapsulation of FNDs in biotinylated phospholipids not only facilitates good dispersion of the particles in biological buffers, but also endows them with high specific targeting ability. We demonstrated a viable application of the technique for biotin-mediated immunostaining of antigens on fixed human cells, identifying their positions by two-color confocal fluorescence imaging, and determining their densities by magnetically modulated fluorescence detection. A binding capacity of 6 ± 1 × 104 antigens/cell was measured specifically for CD44 on HeLa cell surface. The result agreed well with the assay of R-phycoerythrin-conjugated antibodies by flow cytometry, supporting the reliability of this new nanoparticle-based method.
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Affiliation(s)
- Feng-Jen Hsieh
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan.
- Taiwan International Graduate Program-Chemical Biology and Molecular Biophysics, Academia Sinica, Taipei 115, Taiwan.
- Institute of Biochemical Sciences, National Taiwan University, Taipei 106, Taiwan.
| | - Yen-Wei Chen
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan.
| | - Yuen Yung Hui
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan.
| | - Chun-Hung Lin
- Taiwan International Graduate Program-Chemical Biology and Molecular Biophysics, Academia Sinica, Taipei 115, Taiwan.
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan.
| | - Huan-Cheng Chang
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan.
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
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