1
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Proença PL, Carvalho LB, Campos EV, Fraceto LF. Fluorescent labeling as a strategy to evaluate uptake and transport of polymeric nanoparticles in plants. Adv Colloid Interface Sci 2022; 305:102695. [PMID: 35598536 DOI: 10.1016/j.cis.2022.102695] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 05/05/2022] [Accepted: 05/08/2022] [Indexed: 11/01/2022]
Abstract
The use of biodegradable nanopolymers in agriculture offers an excellent alternative for the efficient delivery of agrochemicals that promote plant protection and development. However, tracking of these systems inside plants requires complex probe tagging strategies. In addition to providing a basis for better understanding such nanostructures to optimize delivery system design, these probes allow monitoring the migration of nanoparticles through plant tissues, and determine accumulation sites. Thus, these probes are powerful tools that can be used to quantify and visualize nanoparticle accumulation in plant cells and tissues. This review is an overview of the methods involved in labeling nanocarriers, mainly based on polymeric matrices, for the delivery of nanoagrochemicals and the recent advances in this field.
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2
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Gao D, Cheng F, Wang X, Yang H, Liu C, Li C, Yang EM, Cheng G, He W. Developing G value as an indicator for assessing the molecular status of immobilized antibody. Colloids Surf B Biointerfaces 2022; 217:112593. [PMID: 35665639 DOI: 10.1016/j.colsurfb.2022.112593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 05/08/2022] [Accepted: 05/21/2022] [Indexed: 10/18/2022]
Abstract
Antibody-functionalized nanoparticles (Ab-NPs) are widely used in bioassays due to their excellent affinity, specificity toward antigen, and ease of operation. However, the uncontrollable molecular status of antibodies on NPs severely limits their applications. This work aims at developing a simple method to evaluate the antigen-binding activity of Ab-NPs using two parameters, i.e., antibody adsorption amount and antigen-binding strength. Herein, we proposed a mathematical expression, G, to quantitively describe the amount and strength of Ab-NPs. G value could be used to assess the antigen-binding performance of NPs influenced by surface and solution factors. Seven types of polymers with different surface properties, including four positively and three negatively charged polymer brushes, were grown from silica NPs via surface-initiated atom transfer radical polymerization (SI-ATRP). A pair of antigen and antibody, human chorionic gonadotropin (hCG) and anti-hCG, were selected to screen the antibody immobilization property of polymer brushes. Among them, the G values of 2 polymer-NPs with opposite charges reached maximum, resulting in low detection limits for hCG, where pDMAEA-NP and pMMA-NP represent Poly[N,N-(dimethylamino)ethyl acrylate]-NP and poly(methyl methacrylate)-NP, respectively. The G value of Ab-NPs makes it feasible to estimate the molecular status of the adsorbed antibodies on surfaces, thus showing great potential for in vitro biosensing and bioseparation.
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Affiliation(s)
- Dongdong Gao
- Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, Dalian 116023, China; State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China; Department of Polymer Science & Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116023, China
| | - Fang Cheng
- Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, Dalian 116023, China; State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China; Department of Polymer Science & Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116023, China; Ningbo Institute of Dalian University of Technology, Ningbo 315211, China.
| | - Xinglong Wang
- Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, Dalian 116023, China; State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
| | - Heqing Yang
- Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, Dalian 116023, China; State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
| | - Chong Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China; Department of Polymer Science & Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116023, China
| | - Chunmei Li
- Tsinglan School, Songshan Lake, Dongguan 523000, China
| | | | - Gang Cheng
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Wei He
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China; Department of Polymer Science & Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116023, China
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3
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Li Z, Guo J, Zhang M, Li G, Hao L. Gadolinium-Coated Mesoporous Silica Nanoparticle for Magnetic Resonance Imaging. Front Chem 2022; 10:837032. [PMID: 35242742 PMCID: PMC8885602 DOI: 10.3389/fchem.2022.837032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 01/24/2022] [Indexed: 11/13/2022] Open
Abstract
Magnetic resonance molecular imaging can provide anatomic, functional and molecular information. However, because of the intrinsically low sensitivity of magnetic resonance imaging (MRI), high-performance MRI contrast agents are required to generate powerful image information for image diagnosis. Herein, we describe a novel T1 contrast agent with magnetic-imaging properties facilitated by the gadolinium oxide (Gd2O3) doping of mesoporous silica nanoparticles (MSN). The size, morphology, composition, MRI relaxivity (r1), surface area and pore size of these nanoparticles were evaluated following their conjugation with Gd2O3 to produce Gd2O3@MSN. This unique structure led to a significant enhancement in T1 contrast with longitudinal relaxivity (r1) as high as 51.85 ± 1.38 mM−1s−1. Gd2O3@MSN has a larger T1 relaxivity than commercial gadolinium diethylene triamine pentaacetate (Gd-DTPA), likely due to the geometrical confinement effect of silica nanoparticles. These results suggest that we could successfully prepare a novel high-performance T1 contrast agent, which may be a potential candidate for in-vivo MRI.
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Affiliation(s)
- Zhongtao Li
- Department of Molecular Imaging, School of Medical Technology, Qiqihar Medical University, Qiqihar, China
| | - Jing Guo
- Department of Molecular Imaging, School of Medical Technology, Qiqihar Medical University, Qiqihar, China
| | - Mengmeng Zhang
- Department of Molecular Imaging, School of Medical Technology, Qiqihar Medical University, Qiqihar, China
| | - Guohua Li
- Department of Radiology, The First Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
- *Correspondence: Liguo Hao, ; Guohua Li,
| | - Liguo Hao
- Department of Molecular Imaging, School of Medical Technology, Qiqihar Medical University, Qiqihar, China
- Department of Molecular Imaging, The First Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
- *Correspondence: Liguo Hao, ; Guohua Li,
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4
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Kim CW, Hwang BH, Moon H, Kang J, Park EH, Ihm SH, Chang K, Hong KS. In vivo MRI detection of intraplaque macrophages with biocompatible silica-coated iron oxide nanoparticles in murine atherosclerosis. J Appl Biomater Funct Mater 2021; 19:22808000211014751. [PMID: 34520279 DOI: 10.1177/22808000211014751] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Identification of a vulnerable atherosclerotic plaque before rupture is an unmet clinical need. Integrating nanomedicine with multimodal imaging has the potential to precisely detect biological processes in atherosclerosis. We synthesized silica-coated iron oxide nanoparticles (SIONs) coated with rhodamine B isothiocyanate and polyethylene glycol and investigated their feasibility in the detection of macrophages in inflamed atherosclerotic plaques of apolipoprotein E-deficient (ApoE-/-) mice via magnetic resonance (MR) and fluorescence reflectance (FR) imaging. In vitro cellular uptake of SIONs was assessed in macrophages using confocal laser scanning microscopy (CLSM). In vivo MR imaging was performed 24 h after SION injection via the tail vein in 26-week-old ApoE-/- mice fed a high-cholesterol diet (HCD). We also performed FR imaging of the extracted aortas from four different mice: two normal-diet-fed C57BL/6 mice injected with saline or 10 mg/kg SIONs and two HCD-fed ApoE-/- mice injected with 5 or 10 mg/kg SIONs. The harvested aortas were cryosectioned and stained with immunohistochemical staining. The CLSM images at 24 h after incubation showed efficient uptake of SIONs by macrophages, with no evidence of cytotoxicity. The in vivo and ex vivo MR and FR images demonstrated SION deposition in the atheroma. Upon immunohistochemical staining of the aorta, CLSM images revealed colocalization of macrophages and SIONs in the atherosclerotic plaque. These results demonstrate that polyethylene glycosylated SIONs could be a highly effective method to identify macrophage activity in atherosclerotic plaques as a multimodal imaging agent.
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Affiliation(s)
- Chan Woo Kim
- Catholic Research Institute for Intractable Cardiovascular Disease, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Division of Cardiology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Byung-Hee Hwang
- Catholic Research Institute for Intractable Cardiovascular Disease, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Division of Cardiology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyeyoung Moon
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju, Republic of Korea
| | - Jongeun Kang
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju, Republic of Korea.,Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon, Republic of Korea
| | - Eun-Hye Park
- Catholic Research Institute for Intractable Cardiovascular Disease, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Division of Cardiology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sang-Hyun Ihm
- Catholic Research Institute for Intractable Cardiovascular Disease, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Division of Cardiology, Department of Internal Medicine, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Kiyuk Chang
- Catholic Research Institute for Intractable Cardiovascular Disease, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Division of Cardiology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Kwan Soo Hong
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju, Republic of Korea.,Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon, Republic of Korea
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Raza A, Sime FB, Cabot PJ, Roberts JA, Falconer JR, Kumeria T, Popat A. Liquid CO2 Formulated Mesoporous Silica Nanoparticles for pH-Responsive Oral Delivery of Meropenem. ACS Biomater Sci Eng 2021; 7:1836-1853. [DOI: 10.1021/acsbiomaterials.0c01284] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Aun Raza
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD 4102, Australia
- Centre for Translational Anti-infective Pharmacodynamics, School of Pharmacy, The University of Queensland, Brisbane, QLD 4102, Australia
| | - Fekade Bruck Sime
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD 4102, Australia
- Centre for Translational Anti-infective Pharmacodynamics, School of Pharmacy, The University of Queensland, Brisbane, QLD 4102, Australia
| | - Peter J. Cabot
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD 4102, Australia
| | - Jason A. Roberts
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD 4102, Australia
- Centre for Translational Anti-infective Pharmacodynamics, School of Pharmacy, The University of Queensland, Brisbane, QLD 4102, Australia
- Department of Intensive Care Medicine, Royal Brisbane and Women’s Hospital, Brisbane, QLD 4029, Australia
- Department of Pharmacy, Royal Brisbane and Women’s Hospital, Brisbane, QLD 4029, Australia
| | - James R. Falconer
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD 4102, Australia
| | - Tushar Kumeria
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD 4102, Australia
- School of Materials Science and Engineering, The University of New South Wales, Sydney NSW 2052, Australia
| | - Amirali Popat
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD 4102, Australia
- Mater Research Institute, The University of Queensland Translational Research Institute, 37 Kent Street, Woolloongabba, QLD 4102, Australia
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6
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Adeniyi OK, Ngqinambi A, Mashazi PN. Ultrasensitive detection of anti-p53 autoantibodies based on nanomagnetic capture and separation with fluorescent sensing nanobioprobe for signal amplification. Biosens Bioelectron 2020; 170:112640. [DOI: 10.1016/j.bios.2020.112640] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 09/11/2020] [Accepted: 09/17/2020] [Indexed: 12/28/2022]
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7
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Gubala V, Giovannini G, Kunc F, Monopoli MP, Moore CJ. Dye-doped silica nanoparticles: synthesis, surface chemistry and bioapplications. Cancer Nanotechnol 2020. [DOI: 10.1186/s12645-019-0056-x] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Abstract
Background
Fluorescent silica nanoparticles have been extensively utilised in a broad range of biological applications and are facilitated by their predictable, well-understood, flexible chemistry and apparent biocompatibility. The ability to couple various siloxane precursors with fluorescent dyes and to be subsequently incorporated into silica nanoparticles has made it possible to engineer these fluorophores-doped nanomaterials to specific optical requirements in biological experimentation. Consequently, this class of nanomaterial has been used in applications across immunodiagnostics, drug delivery and human-trial bioimaging in cancer research.
Main body
This review summarises the state-of-the-art of the use of dye-doped silica nanoparticles in bioapplications and firstly accounts for the common nanoparticle synthesis methods, surface modification approaches and different bioconjugation strategies employed to generate biomolecule-coated nanoparticles. The use of dye-doped silica nanoparticles in immunoassays/biosensing, bioimaging and drug delivery is then provided and possible future directions in the field are highlighted. Other non-cancer-related applications involving silica nanoparticles are also briefly discussed. Importantly, the impact of how the protein corona has changed our understanding of NP interactions with biological systems is described, as well as demonstrations of its capacity to be favourably manipulated.
Conclusions
Dye-doped silica nanoparticles have found success in the immunodiagnostics domain and have also shown promise as bioimaging agents in human clinical trials. Their use in cancer delivery has been restricted to murine models, as has been the case for the vast majority of nanomaterials intended for cancer therapy. This is hampered by the need for more human-like disease models and the lack of standardisation towards assessing nanoparticle toxicity. However, developments in the manipulation of the protein corona have improved the understanding of fundamental bio–nano interactions, and will undoubtedly assist in the translation of silica nanoparticles for disease treatment to the clinic.
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8
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Jiang W, Fang H, Liu F, Zhou X, Zhao H, He X, Guo D. PEG-coated and Gd-loaded fluorescent silica nanoparticles for targeted prostate cancer magnetic resonance imaging and fluorescence imaging. Int J Nanomedicine 2019; 14:5611-5622. [PMID: 31413566 PMCID: PMC6662520 DOI: 10.2147/ijn.s207098] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 06/17/2019] [Indexed: 01/01/2023] Open
Abstract
Background: Multimodal imaging probes have become a powerful tool for improving detection sensitivity and accuracy, which are important in disease diagnosis and treatment. Methods: In this study, novel bifunctional magnetic resonance imaging (MRI)/fluorescence probes were prepared by loading gadodiamide into fluorescent silica nanoparticles (NPs) (Gd@Cy5.5@SiO2-PEG-Ab NPs) for targeting of prostate cancer (PCa). The physicochemical characteristics, biosafety and PCa cell targeting ability of the Gd@Cy5.5@SiO2-PEG-Ab NPs were studied in vitro and in vivo. Results: The Gd@Cy5.5@SiO2-PEG-Ab NPs had a spherical morphology with a relatively uniform size distribution and demonstrated high efficiency for Gd loading. In vitro and in vivo cell-targeting experiments demonstrated a high potential for the synthesized NPs to target prostate-specific membrane antigen (PSMA) receptor-positive PCa cells, enabling MRI and fluorescence imaging. In vitro cytotoxicity assays and in vivo hematological and pathological assays showed that the prepared NPs exhibited good biological safety. Conclusion: Our study demonstrates that the synthesized Gd@Cy5.5@SiO2-PEG-Ab NPs have great potential as MRI/fluorescence contrast agents for specific identification of PSMA receptor-positive PCa cells.
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Affiliation(s)
- Wei Jiang
- Department of Radiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, People's Republic of China
| | - Huiying Fang
- Department of Breast Diseases, Chongqing University Cancer Hospital, Chongqing Cancer Institute and Chongqing Cancer Hospital, Chongqing 400030, People's Republic of China
| | - Fengqiu Liu
- Institute of Ultrasound Imaging, Department of Ultrasound, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, People's Republic of China
| | - Xue Zhou
- Department of Radiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, People's Republic of China
| | - Hongyun Zhao
- Department of Gastroenterology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, People's Republic of China
| | - Xiaojing He
- Department of Radiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, People's Republic of China
| | - Dajing Guo
- Department of Radiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, People's Republic of China
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9
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Kunc F, Moore CJ, Sully RE, Hall AJ, Gubala V. Polycarboxylated Dextran as a Multivalent Linker: Synthesis and Target Recognition of the Antibody-Nanoparticle Bioconjugates in PBS and Serum. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:4909-4917. [PMID: 30817890 DOI: 10.1021/acs.langmuir.8b03833] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Nanoparticles (NPs) functionalized with antibodies on their surface are used in a wide range of research applications. However, the bioconjugation chemistry between the antibodies and the surface of nanoparticles can be very challenging, often accompanied by several undesired effects such as nanoparticle aggregation, antibody denaturation, or poor target recognition of the surface-bound antibodies. Here, we report on a synthesis of fluorescent silica nanoparticle-antibody (NP-Ab) conjugates, in which polycarboxylated dextran is used as the multivalent linker. First, we present a synthetic methodology to prepare polycarboxylated dextrans with molecular weights of 6, 40, and 70 kDa. Second, we used water-soluble, polycarboxylated dextrans as a multivalent spacers/linkers to immobilize antibodies onto fluorescent silica nanoparticles. The prepared NP-Ab conjugates were tested in a direct binding assay format in both phosphate-buffered saline buffer and whole serum to investigate the role of the spacer/linker in the capacity of the NP-Ab to specifically recognize their target in "clean" and also in complex media. We have compared the dextran conjugates with two standards: (a) NP-Ab with antibodies attached on the surface of nanoparticles through the classical physical adsorption method and (b) NP-Ab where an established poly(amidoamine) (PAMAM) dendrimer was used as the linker. Our results showed that the polycarboxylated 6 kDa dextran facilitates antibody immobilization efficiency of nearly 92%. This was directly translated into the improved molecular recognition of the NP-Ab, which was measured by a direct binding assay. The signal-to-noise ratio in buffered solution for the 6 kDa dextran NP-Ab conjugates was 81, nearly 3 times higher than that of PAMAM G4.5 conjugates and 9 times higher than the physically adsorbed NP-Ab sample. In whole serum, the effect of 6 kDa dextran was more hindered due to the formation of protein corona but the signal-to-noise ratio was at least double that of the physically adsorbed NP-Ab conjugates.
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Affiliation(s)
- Filip Kunc
- National Research Council Canada , 100 Sussex Drive , Ottawa , Ontario K1N 0R6 , Canada
| | - Colin J Moore
- Italian Institute of Technology , 30 Via Morego , Genoa 16163 , Italy
| | - Rachel E Sully
- Medway School of Pharmacy , Universities of Greenwich and Kent , Anson Building, Central Avenue , Chatham ME4 4TB , U.K
| | - Andrew J Hall
- Medway School of Pharmacy , Universities of Greenwich and Kent , Anson Building, Central Avenue , Chatham ME4 4TB , U.K
| | - Vladimir Gubala
- Medway School of Pharmacy , Universities of Greenwich and Kent , Anson Building, Central Avenue , Chatham ME4 4TB , U.K
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Shandilya R, Bhargava A, Bunkar N, Tiwari R, Goryacheva IY, Mishra PK. Nanobiosensors: Point-of-care approaches for cancer diagnostics. Biosens Bioelectron 2019; 130:147-165. [PMID: 30735948 DOI: 10.1016/j.bios.2019.01.034] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 12/21/2018] [Accepted: 01/12/2019] [Indexed: 12/24/2022]
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11
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A novel magnetic fluorescent biosensor based on graphene quantum dots for rapid, efficient, and sensitive separation and detection of circulating tumor cells. Anal Bioanal Chem 2019; 411:985-995. [PMID: 30612176 DOI: 10.1007/s00216-018-1501-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 11/08/2018] [Accepted: 11/16/2018] [Indexed: 01/17/2023]
Abstract
We describe a "turn-on" magnetic fluorescent biosensor based on graphene quantum dots (GQDs), Fe3O4, and molybdenum disulfide (MoS2) nanosheets. It is used for rapid, efficient, and sensitive separation and detection of circulating tumor cells (CTCs). A facile approach (electrochemical synthesis method) for the preparation of photoluminescent GQDs functionalized with an aptamer [epithelial cell adhesion molecule (EpCAM) receptors] and a magnetic agent for one-step bioimaging and enrichment of CTCs is described. MoS2 nanosheets, as a fluorescence quencher, and the aforementioned aptamer@Fe3O4@GQD complex were assembled to construct "turn-on" biosensing magnetic fluorescent nanocomposites (MFNs). This system exhibits low cytotoxicity and an average capture efficiency of 90%, which is higher than that of other magnetic nanoparticles on account of the one-step CTC separation method. In addition, the MFNs could quickly identify and label CTCs within 15 min, surpassing other one-step and two-step marker detection methods. Furthermore, because of the presence of aptamers, the MFNs have specific capability to capture CTCs (both low- and high-EpCAM-expressing cells). In addition, high-sensitivity detection of up to ten tumor cells in whole blood was achieved. Therefore, the MFNs have great potential to be used as universal biosensing nanocomposites for fluorescence-guided tumor cell enrichment and bioimaging. Graphical abstract ᅟ.
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12
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Zhang YJ, Zeng QY, Li LF, Qi MN, Qi QC, Li SX, Xu JF. Label-free rapid identification of tumor cells and blood cells with silver film SERS substrate. OPTICS EXPRESS 2018; 26:33044-33056. [PMID: 30645462 DOI: 10.1364/oe.26.033044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The detection of circulating tumor cells (CTCs) from peripheral blood is considered as great significance for the diagnosis and prognosis of cancer patients. Raman spectroscopy is a highly sensitive optical detection technique that can provide fingerprint molecular identification information. In this paper, the silver film substrate surface-enhanced Raman scattering (SERS) was used to research several tumor cells, immortalized cells, clinical cancer cells isolated from cancer patient's tissue and blood cells. The results display that there is great difference for the nucleic acid characteristic peaks of those cells. The red blood cells have almost none nucleic acid characteristic peak and the SERS signals of white blood cells are only a slight increase. Except for immortalized cells and few tumor cells, the nucleic acid characteristic peaks of some tumor cells have huge enhancement. Nucleic acid characteristic peaks of clinical cancer cells also have greater enhancement. The discriminant model established by the intensity ratio of the nucleic acid characteristic peak 730 cm-1 to the substrate background peak 900 cm-1 shows that some tumor cells and clinical sample cells can be separated from white blood cells, but tumor cells with relatively low-DNA index cannot be differentiated from white blood cells. This study demonstrates that thin-film SERS technology can distinguish between blood cells and some types of tumor cells. This study opens up a new possible method for the detection of CTCs with label-free SERS spectra.
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Shim G, Kim D, Lee S, Chang RS, Byun J, Oh YK. Staphylococcus aureus-mimetic control of antibody orientation on nanoparticles. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2018; 16:267-277. [PMID: 30368001 DOI: 10.1016/j.nano.2018.09.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 09/12/2018] [Accepted: 09/18/2018] [Indexed: 10/28/2022]
Abstract
We designed a bacterio-mimetic nanoparticle that can noncovalently control the orientation of attached antibodies. Liposomes with Fc-binding peptide (FcBP), formulated using FcBP-conjugated PEGylated lipid, were used as model nanoparticles. Compared with control nanoparticles surface-modified with antibody covalently attached via maleimide functional groups (Mal-NPs), FcBP-capped nanoparticles (FcBP-NPs) exhibited greater binding affinity to the target protein. Human epidermal growth factor receptor 2 (HER2)-specific antibody-modified FcBP-NPs (HER2/FcBP-NPs) showed 5.3-fold higher binding affinity to HER2 than isotype IgG antibody-modified NPs, and 2.6-fold higher affinity compared with anti-HER2 antibody-conjugated Mal-NPs. Cellular uptake of HER2/FcBP-NPs in HER2-positive cells was significantly higher than that of other formulations. The biodistribution of HER2/FcBP-NPs was higher than that of antibody-conjugated NPs in HER2-positive tumor tissues, but not in HER2-negative tumors. Our findings suggest the potential of bacteriomimetic nanoparticles for controlling the orientation of antibody attachment. These nanoparticles may have diverse applications in nanomedicine, including drug delivery, molecular imaging, and diagnosis.
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Affiliation(s)
- Gayong Shim
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
| | - Dongyoon Kim
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
| | - Sangbin Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
| | - Rae Sung Chang
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
| | - Junho Byun
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
| | - Yu-Kyoung Oh
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea.
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14
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Kim B, Oh S, Shin S, Yim SG, Yang SY, Hahn YK, Choi S. Pumpless Microflow Cytometry Enabled by Viscosity Modulation and Immunobead Labeling. Anal Chem 2018; 90:8254-8260. [PMID: 29874050 DOI: 10.1021/acs.analchem.8b01804] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Major challenges of miniaturizing flow cytometry include obviating the need for bulky, expensive, and complex pump-based fluidic and laser-based optical systems while retaining the ability to detect target cells based on their unique surface receptors. We addressed these critical challenges by (i) using a viscous liquid additive to control flow rate passively, without external pumping equipment, and (ii) adopting an immunobead assay that can be quantified with a portable fluorescence cell counter based on a blue light-emitting diode. Such novel features enable pumpless microflow cytometry (pFC) analysis by simply dropping a sample solution onto the inlet reservoir of a disposable cell-counting chamber. With our pFC platform, we achieved reliable cell counting over a dynamic range of 9-298 cells/μL. We demonstrated the practical utility of the platform by identifying a type of cancer cell based on CD326, the epithelial cell adhesion molecule. This portable microflow cytometry platform can be applied generally to a range of cell types using immunobeads labeled with specific antibodies, thus making it valuable for cell-based and point-of-care diagnostics.
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Affiliation(s)
- Byeongyeon Kim
- Department of Biomedical Engineering , Kyung Hee University , Yongin-si , Gyeonggi-do 17104 , Republic of Korea
| | - Sein Oh
- Department of Biomedical Engineering , Kyung Hee University , Yongin-si , Gyeonggi-do 17104 , Republic of Korea
| | - Suyeon Shin
- Department of Biomedical Engineering , Kyung Hee University , Yongin-si , Gyeonggi-do 17104 , Republic of Korea
| | - Sang-Gu Yim
- Department of Biomaterials Science, Life and Industry Convergence Institute , Pusan National University , 1268-50 Samrangjin-ro , Miryang 50463 , Republic of Korea
| | - Seung Yun Yang
- Department of Biomaterials Science, Life and Industry Convergence Institute , Pusan National University , 1268-50 Samrangjin-ro , Miryang 50463 , Republic of Korea
| | - Young Ki Hahn
- Department of New Biology , Daegu Gyeongbuk Institute of Science & Technology (DGIST) , Daegu 42988 , Republic of Korea
| | - Sungyoung Choi
- Department of Biomedical Engineering , Kyung Hee University , Yongin-si , Gyeonggi-do 17104 , Republic of Korea
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15
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Giovannini G, Warncke P, Fischer D, Stranik O, Hall AJ, Gubala V. Improving colloidal stability of silica nanoparticles when stored in responsive gel: application and toxicity study. Nanotoxicology 2018; 12:407-422. [DOI: 10.1080/17435390.2018.1457729] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | - Paul Warncke
- Department of Pharmaceutical Technology, Friedrich-Schiller-University Jena, Institute of Pharmacy, Jena, Germany
| | - Dagmar Fischer
- Department of Pharmaceutical Technology, Friedrich-Schiller-University Jena, Institute of Pharmacy, Jena, Germany
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16
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Jenkins SV, Nima ZA, Vang KB, Kannarpady G, Nedosekin DA, Zharov VP, Griffin RJ, Biris AS, Dings RPM. Triple-negative breast cancer targeting and killing by EpCAM-directed, plasmonically active nanodrug systems. NPJ Precis Oncol 2017; 1:27. [PMID: 29872709 PMCID: PMC5871908 DOI: 10.1038/s41698-017-0030-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 06/29/2017] [Accepted: 07/19/2017] [Indexed: 11/16/2022] Open
Abstract
An ongoing need for new cancer therapeutics exists, especially ones that specifically home and target triple-negative breast cancer. Because triple-negative breast cancer express low or are devoid of estrogen, progesterone, or Her2/Neu receptors, another target must be used for advanced drug delivery strategies. Here, we engineered a nanodrug delivery system consisting of silver-coated gold nanorods (AuNR/Ag) targeting epithelial cell adhesion/activating molecule (EpCAM) and loaded with doxorubicin. This nanodrug system, AuNR/Ag/Dox-EpCAM, was found to specifically target EpCAM-expressing tumors compared to low EpCAM-expressing tumors. Namely, the nanodrug had an effective dose (ED50) of 3 μM in inhibiting 4T1 cell viability and an ED50 of 110 μM for MDA-MD-231 cells. Flow cytometry data indicated that 4T1 cells, on average, express two orders of magnitude more EpCAM than MDA-MD-231 cells, which correlates with our ED50 findings. Moreover, due to the silver coating, the AuNR/Ag can be detected simultaneously by surface-enhanced Raman spectroscopy and photoacoustic microscopy. Analysis by these imaging detection techniques as well as by inductively coupled plasma mass spectrometry showed that the targeted nanodrug system was taken up by EpCAM-expressing cells and tumors at significantly higher rates than untargeted nanoparticles (p < 0.05). Thus, this approach establishes a plasmonically active nanodrug theranostic for triple-negative breast cancer and, potentially, a delivery platform with improved multimodal imaging capability for other clinically relevant chemotherapeutics with dose-limiting toxicities, such as platinum-based or taxane-based therapies. Silver-coated gold nanorods deliver drugs to a difficult-to-treat breast cancer by targeting an over-expressed antigen on its surface. Ruud Dings and colleagues at the University of Arkansas in the USA loaded the chemotherapeutic drug doxorubicin onto silver-coated gold nanorods that were conjugated with an antibody that specifically targets an over-expressed antigen on many types of ‘triple-negative breast cancers’ (TNBCs). Unlike other breast cancers, TNBCs lack certain receptors, making them difficult to target with cancer therapies. The team found that one of the two TNBC cell lines studied over-expressed the epithelial antigen EpCAM 100 times more than the other. Their drug-loaded silver-coated gold nanorods specifically targeted the EpCAM over-expressing cells over the low-expressing ones. The nanorods’ coatings also allowed them to be easily detected by two different imaging techniques: surfaced-enhanced Raman spectroscopy and photoacoustic microscopy.
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Affiliation(s)
- Samir V Jenkins
- 1Department of Radiation Oncology, University of Arkansas for Medical Sciences, Little Rock, AR USA
| | - Zeid A Nima
- 2Center for Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, Little Rock, AR USA
| | - Kieng B Vang
- 2Center for Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, Little Rock, AR USA
| | - Ganesh Kannarpady
- 2Center for Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, Little Rock, AR USA
| | - Dmitry A Nedosekin
- 3The Phillips Classic Laser and Nanomedicine Laboratories, University of Arkansas for Medical Sciences, Little Rock, AR USA
| | - Vladimir P Zharov
- 3The Phillips Classic Laser and Nanomedicine Laboratories, University of Arkansas for Medical Sciences, Little Rock, AR USA
| | - Robert J Griffin
- 1Department of Radiation Oncology, University of Arkansas for Medical Sciences, Little Rock, AR USA
| | - Alexandru S Biris
- 2Center for Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, Little Rock, AR USA
| | - Ruud P M Dings
- 1Department of Radiation Oncology, University of Arkansas for Medical Sciences, Little Rock, AR USA
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17
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Chen D, Wu IC, Liu Z, Tang Y, Chen H, Yu J, Wu C, Chiu DT. Semiconducting polymer dots with bright narrow-band emission at 800 nm for biological applications. Chem Sci 2017; 8:3390-3398. [PMID: 28507710 PMCID: PMC5416912 DOI: 10.1039/c7sc00441a] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Accepted: 03/01/2017] [Indexed: 12/21/2022] Open
Abstract
The development of near-infrared (NIR) fluorescent probes is critical for in vivo exploration of the fundamental and complex processes in living systems by noninvasive fluorescence imaging techniques. Semiconducting polymer dots (Pdots) are emerging as important probes that exhibit several advantages, such as high brightness and biocompatibility. However, NIR-emitting Pdots are very rare, particularly at the center (∼800 nm) of the first optical window of biological tissues (between 650 nm and 950 nm). In this paper, we describe the synthesis of a semiconducting polymer with bright and narrow-band emission at 800 nm. The polymer was designed by incorporating a NIR porphyrin unit into a conjugated backbone; the polymer used a cascade energy transfer to produce the signal. The resulting Pdots possessed a narrow emission bandwidth (FWHM ∼ 23 nm) and good fluorescence quantum yield (QY = 8%), which is high for a near-IR emitter. The Pdots were bioconjugated with streptavidin for specific labeling of cellular targets, yielding higher staining index when compared with commercial NIR probes, such as PE-Cy7. Moreover, the NIR polymer was combined with a long-wavelength absorbing polymer to make bright Pdots (QY = 15%) for in vivo noninvasive imaging. These NIR Pdots with surface PEGylation led to high-contrast imaging of lymph nodes and tumors in a mouse model. This work highlights the great potential of the NIR Pdots for cellular and in vivo imaging applications.
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Affiliation(s)
- Dandan Chen
- Department of Biomedical Engineering , Southern University of Science and Technology , Shenzhen , Guangdong 510855 , China .
- State Key Laboratory on Integrated Optoelectronics , College of Electronic Science and Engineering , Jilin University , Changchun , Jilin 130012 , China
| | - I-Che Wu
- Department of Chemistry and Bioengineering , University of Washington , Seattle , Washington 98195 , USA .
| | - Zhihe Liu
- State Key Laboratory on Integrated Optoelectronics , College of Electronic Science and Engineering , Jilin University , Changchun , Jilin 130012 , China
| | - Ying Tang
- State Key Laboratory on Integrated Optoelectronics , College of Electronic Science and Engineering , Jilin University , Changchun , Jilin 130012 , China
| | - Haobin Chen
- State Key Laboratory on Integrated Optoelectronics , College of Electronic Science and Engineering , Jilin University , Changchun , Jilin 130012 , China
| | - Jiangbo Yu
- Department of Chemistry and Bioengineering , University of Washington , Seattle , Washington 98195 , USA .
| | - Changfeng Wu
- Department of Biomedical Engineering , Southern University of Science and Technology , Shenzhen , Guangdong 510855 , China .
| | - Daniel T Chiu
- Department of Chemistry and Bioengineering , University of Washington , Seattle , Washington 98195 , USA .
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18
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Moore CJ, Giovannini G, Kunc F, Hall AJ, Gubala V. ‘Overloading’ fluorescent silica nanoparticles with dyes to improve biosensor performance. J Mater Chem B 2017. [DOI: 10.1039/c7tb01284e] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Using dye-doped silica nanoparticles (DSNP) as reporter probes, we describe a simple method of enhancing fluorescent signal and the extension of the detectable target concentration range in a proof-of-concept ‘dissolution immunoassay’.
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Affiliation(s)
- Colin J. Moore
- Medway School of Pharmacy
- University of Kent
- Chatham Maritime
- Kent
- UK
| | | | - Filip Kunc
- Medway School of Pharmacy
- University of Kent
- Chatham Maritime
- Kent
- UK
| | - Andrew J. Hall
- Medway School of Pharmacy
- University of Kent
- Chatham Maritime
- Kent
- UK
| | - Vladimir Gubala
- Medway School of Pharmacy
- University of Kent
- Chatham Maritime
- Kent
- UK
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