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Gil HM, Booth Z, Price TW, Lee J, Naylor-Adamson L, Avery M, Muravitskaya A, Hondow N, Allsup D, Schneider JE, Naseem K, Adawi AM, Bouillard JSG, Chamberlain TW, Calaminus SDJ, Stasiuk GJ. Impact of Surface Ligand on the Biocompatibility of InP/ZnS Quantum Dots with Platelets. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304881. [PMID: 37946631 DOI: 10.1002/smll.202304881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 10/24/2023] [Indexed: 11/12/2023]
Abstract
InP/ZnS quantum dots (QDs) have received a large focus in recent years as a safer alternative to heavy metal-based QDs. Given their intrinsic fluorescent imaging capabilities, these QDs can be potentially relevant for in vivo platelet imaging. The InP/ZnS QDs are synthesized and their biocompatibility investigated through the use of different phase transfer agents. Analysis of platelet function indicates that platelet-QD interaction can occur at all concentrations and for all QD permutations tested. However, as the QD concentration increases, platelet aggregation is induced by QDs alone independent of natural platelet agonists. This study helps to define a range of concentrations and coatings (thioglycolic acid and penicillamine) that are biocompatible with platelet function. With this information, the platelet-QD interaction can be identified using multiple methods. Fluorescent lifetime imaging microscopy (FLIM) and confocal studies have shown QDs localize on the surface of the platelet toward the center while showing evidence of energy transfer within the QD population. It is believed that these findings are an important stepping point for the development of fluorescent probes for platelet imaging.
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Affiliation(s)
- Hélio M Gil
- Department of Imaging Chemistry and Biology, School of Biomedical Engineering and Imaging Sciences, King's College London, London, SE1 7EH, UK
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, HU6 7RX, UK
| | - Zoe Booth
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, HU6 7RX, UK
| | - Thomas W Price
- Department of Imaging Chemistry and Biology, School of Biomedical Engineering and Imaging Sciences, King's College London, London, SE1 7EH, UK
| | - Jessica Lee
- Centre for Biomedicine, University of Hull, Hull , HU6 7RX, UK
| | - Leigh Naylor-Adamson
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, HU6 7RX, UK
| | - Michelle Avery
- Centre for Biomedicine, University of Hull, Hull , HU6 7RX, UK
| | - Alina Muravitskaya
- Department of Physics and Mathematics, University of Hull, Hull , HU6 7RX, UK
| | - Nicole Hondow
- School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - David Allsup
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, HU6 7RX, UK
| | | | - Khalid Naseem
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Ali M Adawi
- Department of Physics and Mathematics, University of Hull, Hull , HU6 7RX, UK
| | | | - Thomas W Chamberlain
- Institute of Process Research and Development School of Chemistry, University of Leeds, Leeds, LS2 9JT, UK
| | - Simon D J Calaminus
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, HU6 7RX, UK
| | - Graeme J Stasiuk
- Department of Imaging Chemistry and Biology, School of Biomedical Engineering and Imaging Sciences, King's College London, London, SE1 7EH, UK
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2
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Das K, Meena R, Gaharwar US, Priyadarshini E, Rawat K, Paulraj R, Mohanta YK, Saravanan M, Bohidar HB. Bioaccumulation of CdSe Quantum Dots Show Biochemical and Oxidative Damage in Wistar Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2023; 2023:7707452. [PMID: 37064800 PMCID: PMC10101743 DOI: 10.1155/2023/7707452] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 11/24/2022] [Accepted: 01/19/2023] [Indexed: 04/09/2023]
Abstract
Cadmium selenium quantum dots (CdSe QDs) with modified surfaces exhibit superior dispersion stability and high fluorescence yield, making them desirable biological probes. The knowledge of cellular and biochemical toxicity has been lacking, and there is little information on the correlation between in vitro and in vivo data. The current study was carried out to assess the toxicity of CdSe QDs after intravenous injection in Wistar male rats (230 g). The rats were given a single dose of QDs of 10, 20, 40, and 80 mg/kg and were kept for 30 days. Following that, various biochemical assays, hematological parameters, and bioaccumulation studies were carried out. Functional as well as clinically significant changes were observed. There was a significant increase in WBC while the RBC decreased. This suggested that CdSe quantum dots had inflammatory effects on the treated rats. The various biochemical assays clearly showed that high dose induced hepatic injury. At a dose of 80 mg/kg, bioaccumulation studies revealed that the spleen (120 g/g), liver (78 g/g), and lungs (38 g/g) accumulated the most. In treated Wistar rats, the bioretention profile of QDs was in the following order: the spleen, liver, kidney, lungs, heart, brain, and testis. The accumulation of these QDs induced the generation of intracellular reactive oxygen species, resulting in an alteration in antioxidant activity. It is concluded that these QDs caused oxidative stress, which harmed cellular functions and, under certain conditions, caused partial brain, kidney, spleen, and liver dysfunction. This is one of the most comprehensive in vivo studies on the nanotoxicity of CdSe quantum dots.
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Affiliation(s)
- Kishan Das
- Shaheed Rajguru College of Applied Sciences for Women, University of Delhi, New Delhi, India
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Ramovatar Meena
- School of Environment Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Usha Singh Gaharwar
- School of Environment Sciences, Jawaharlal Nehru University, New Delhi, India
- Swami Shraddhanand College, University of Delhi, Delhi, India
| | | | - Kamla Rawat
- Department of Chemistry, School of Life and Chemical Sciences, Jamia Hamdard, New Delhi, India
| | - R. Paulraj
- School of Environment Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Yugal Kishore Mohanta
- Department of Applied Biology, School of Biological Sciences, University of Science and Technology Meghalaya (USTM), 9th Mile, Baridua-793101, Ri-Bhoi Dist., Meghalaya, India
| | - Muthupandian Saravanan
- Department of Medical Microbiology and Immunology, Division of Biomedical Sciences, School of Medicine, College of Health Sciences, Mekelle University, Tigray, Ethiopia
- AMR and Nanotherapeutics Laboratory, Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, 600 077 Chennai, India
| | - Himadri B. Bohidar
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi, India
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3
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Biosynthesis of Bixa orellana seed extract mediated silver nanoparticles with moderate antioxidant, antibacterial and antiproliferative activity. ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
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4
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Kuroi K, Yamada M, Kawamura I, Jung M, Pack CG, Fujii F. FTIR study of the surface-ligand exchange reaction with glutathione on biocompatible rod-shaped CdSe/CdS semiconductor nanocrystals. Phys Chem Chem Phys 2022; 24:13356-13364. [DOI: 10.1039/d2cp00574c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Semiconductor nanocrystals (SNCs) are an essential optical tool in the life sciences. Application of SNCs to living systems requires that their surfaces be covered with biocompatible molecules. The surface capping...
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5
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Tsuboi S, Jin T. BRET-Based Dual-Color (Visible/Near-Infrared) Molecular Imaging Using a Quantum Dot/EGFP-Luciferase Conjugate. Methods Mol Biol 2022; 2525:47-59. [PMID: 35836060 DOI: 10.1007/978-1-0716-2473-9_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
By virtue of its high sensitivity, bioluminescence imaging (BLI) is an important tool for biosensing and bioimaging in life sciences. Compared to fluorescence imaging (FLI), BLI has a superior advantage that the background signals resulting from autofluorescence are almost zero due to the unnecessity of external excitation. In addition, BLI can permit a long-term observation of living cells because BL results in very low photocytotoxicity toward the host cells. Although BLI has such superior properties over FLI, the available wavelengths in BLI are mostly limited to the visible region. Here we present bioluminescence resonance energy transfer (BRET)-based visible and near-infrared dual-color molecular imaging using a quantum dot (QD) and luciferase-protein conjugate.
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Affiliation(s)
- Setsuko Tsuboi
- RIKEN Center for Biosystems Dynamics Research, Suita, Osaka, Japan
| | - Takashi Jin
- RIKEN Center for Biosystems Dynamics Research, Suita, Osaka, Japan.
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6
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7
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Advances in luminescent metal-organic framework sensors based on post-synthetic modification. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.115939] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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8
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Cao F, Chen J, Yu D, Wang S, Xu X, Liu J, Han Z, Huang B, Gu Y, Choy KL, Zeng H. Bionic Detectors Based on Low-Bandgap Inorganic Perovskite for Selective NIR-I Photon Detection and Imaging. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1905362. [PMID: 31858634 DOI: 10.1002/adma.201905362] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 11/08/2019] [Indexed: 05/26/2023]
Abstract
Fluorescence imaging with photodetectors (PDs) toward near-infrared I (NIR-I) photons (700-900 nm), the so-called "optical window" in organisms, has provided an important path for tracing biological processes in vivo. With both excitation photons and fluorescence photons in this narrow range, a stringent requirement arises that the fluorescence signal should be efficiently differentiated for effective sensing, which cannot be fulfilled by common PDs with a broadband response such as Si-based PDs. In this work, delicate optical microcavities are designed to develop a series of bionic PDs with selective response to NIR-I photons, the merits of a narrowband response with a full width at half maximum (FWHM) of <50 nm, and tunability to cover the NIR-I range are highlighted. Inorganic halide perovskite CsPb0.5 Sn0.5 I3 is chosen as the photoactive layer with comprehensive bandgap and film engineering. As a result, these bionic PDs offer a signal/noise ratio of ≈106 , a large bandwidth of 543 kHz and an ultralow detection limit of 0.33 nW. Meanwhile, the peak responsivity (R) and detectivity (D*) reach up to 270 mA W-1 and 5.4 × 1014 Jones, respectively. Finally, proof-of-concept NIR-I imaging using the PDs is demonstrated to show great promise in real-life application.
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Affiliation(s)
- Fei Cao
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Jingde Chen
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, Jiangsu, P. R. China
| | - Dejian Yu
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Shu Wang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, Jiangsu, P. R. China
| | - Xiaobao Xu
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Jiaxin Liu
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Zeyao Han
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Bo Huang
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Yu Gu
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Kwang Leong Choy
- Institute for Materials Discovery, University College London, Roberts Building, Malet Place, London, WC1E 7JE, UK
| | - Haibo Zeng
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
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9
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Bioluminescence Resonance Energy Transfer (BRET) Coupled Near-Infrared Imaging of Apoptotic Cells. Methods Mol Biol 2020; 2081:15-27. [PMID: 31721115 DOI: 10.1007/978-1-4939-9940-8_2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Detection of apoptotic cells is crucial for understanding the mechanism of diseases and for therapy development. So far, visible-emitting fluorescent probes such as FITC-labeled Annexin V has been widely used for the detection of apoptotic cells. However, such probes cannot be applied to noninvasive imaging in the near-infrared (NIR) region. Compared with visible light, NIR light is highly permeable in turbid biological samples and tissues. In addition, NIR optical imaging has several advantages such as lower autofluorescence and scattering from biological samples, leading to clearer images with high signal to background ratios. Here, we describe the synthesis and application of bioluminescence resonance energy transfer (BRET)-coupled quantum dots (QDs) for the NIR optical imaging of apoptotic cells.
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10
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Tsuboi S, Jin T. BRET based dual-colour (visible/near-infrared) molecular imaging using a quantum dot/EGFP–luciferase conjugate. RSC Adv 2019; 9:34964-34971. [PMID: 35530680 PMCID: PMC9074158 DOI: 10.1039/c9ra07011g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 10/17/2019] [Indexed: 12/25/2022] Open
Abstract
Owing to its high sensitivity, bioluminescence imaging is an important tool for biosensing and bioimaging in life sciences. Compared to fluorescence imaging, bioluminescence imaging has a superior advantage that the background signals resulting from autofluorescence are almost zero. In addition, bioluminescence imaging can permit long-term observation of living cells because external excitation is not needed, leading to no photobleaching and photocytotoxicity. Although bioluminescence imaging has such superior properties over fluorescence imaging, observation wavelengths in bioluminescence imaging are mostly limited to the visible region. Here we present bioluminescence resonance energy transfer (BRET) based dual-colour (visible/near-infrared) molecular imaging using a quantum dot (QD) and luciferase protein conjugate. This bioluminescent probe is designed to emit green and near-infrared luminescence from enhanced green fluorescent protein (EGFP) and CdSeTe/CdS (core/shell) QDs, where EGFP–Renilla luciferase (RLuc) fused proteins are conjugated to the QDs. Since the EGFP–RLuc fused protein contains an immunoglobulin binding domain (GB1) of protein G, it is possible to prepare a variety of molecular imaging probes functionalized with antibodies (IgG). We show that the BRET-based QD probe can be used for highly sensitive dual-colour (visible/near-infrared) bioluminescence molecular imaging of membrane receptors in cancer cells. A bioluminescent dual-colour molecular-imaging probe was prepared to emit green and near-infrared luminescence from a conjugate between enhanced green fluorescent protein (EGFP), Renilla luciferase (RLuc) and CdSeTe/CdS quantum dot (QD).![]()
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Affiliation(s)
- Setsuko Tsuboi
- RIKEN Center for Biosystems Dynamics Research (BDR)
- Osaka 565-0874
- Japan
| | - Takashi Jin
- RIKEN Center for Biosystems Dynamics Research (BDR)
- Osaka 565-0874
- Japan
- Graduate School of Frontier Biosciences
- Osaka University
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11
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Tsuboi S, Jin T. Recombinant Protein (Luciferase-IgG Binding Domain) Conjugated Quantum Dots for BRET-Coupled Near-Infrared Imaging of Epidermal Growth Factor Receptors. Bioconjug Chem 2018. [DOI: 10.1021/acs.bioconjchem.8b00149] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Setsuko Tsuboi
- Quantitative Biology Center, RIKEN, Furuedai 6-2-3, Suita, Osaka 565-0874, Japan
| | - Takashi Jin
- Quantitative Biology Center, RIKEN, Furuedai 6-2-3, Suita, Osaka 565-0874, Japan
- Graduate School of Frontier Biosciences, Osaka University, Yamada-oka 2-1, Suita, Osaka 565-0871, Japan
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12
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Vijaya Bharathi M, Maiti S, Sarkar B, Ghosh K, Paira P. Water-mediated green synthesis of PbS quantum dot and its glutathione and biotin conjugates for non-invasive live cell imaging. ROYAL SOCIETY OPEN SCIENCE 2018; 5:171614. [PMID: 29657768 PMCID: PMC5882692 DOI: 10.1098/rsos.171614] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 02/09/2018] [Indexed: 05/14/2023]
Abstract
This study addresses the cellular uptake of nanomaterials in the field of bio-applications. In the present study, we have synthesized water-soluble lead sulfide quantum dot (PbS QD) with glutathione and 3-MPA (mercaptopropionic acid) as the stabilizing ligand using a green approach. 3-MPA-capped QDs were further modified with streptavidin and then bound to biotin because of its high conjugation efficiency. Labelling and bio-imaging of cells with these bio-conjugated QDs were evaluated. The bright red fluorescence from these types of QDs in HeLa cells makes these materials suitable for deep tissue imaging.
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Affiliation(s)
- M. Vijaya Bharathi
- Department of Chemistry, School of Advanced Sciences, VIT University, Vellore 632014, Tamilnadu, India
- School of Electronics Engineering (SENSE), VIT University, Chennai Campus, Chennai, Tamilnadu, India
| | - Santanu Maiti
- Department of Chemistry, School of Advanced Sciences, VIT University, Vellore 632014, Tamilnadu, India
| | - Bidisha Sarkar
- Department of Chemistry, School of Advanced Sciences, VIT University, Vellore 632014, Tamilnadu, India
| | - Kaustab Ghosh
- Department of Chemistry, School of Advanced Sciences, VIT University, Vellore 632014, Tamilnadu, India
- School of Electronics Engineering (SENSE), VIT University, Chennai Campus, Chennai, Tamilnadu, India
- Authors for correspondence: Kaustab Ghosh e-mail:
| | - Priyankar Paira
- Department of Chemistry, School of Advanced Sciences, VIT University, Vellore 632014, Tamilnadu, India
- Authors for correspondence: Priyankar Paira e-mail:
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13
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Tsuboi S, Jin T. Bioluminescence Resonance Energy Transfer (BRET)-coupled Annexin V-functionalized Quantum Dots for Near-Infrared Optical Detection of Apoptotic Cells. Chembiochem 2017; 18:2231-2235. [PMID: 28901721 DOI: 10.1002/cbic.201700486] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Indexed: 01/07/2023]
Abstract
Deregulation in apoptosis induces numerous diseases such as cancer, cardiovascular, and neurodegenerative diseases. Detection of apoptotic cells is crucial for understanding the mechanism of these diseases and for therapy development. Although optical imaging using visible-emitting fluorescent probes, such as FITC-labeled annexin V, is widely used for the detection of apoptotic cells, there are very limited probes that can be used in the near-infrared region (NIR) over 700 nm. Compared with visible light, NIR light is highly permeable in turbid biological samples and tissues. In addition, optical imaging in the NIR region shows low autofluorescence from biological samples, leading to clearer images with high signal to background ratios. Here, we report the synthesis of bioluminescence resonance energy transfer (BRET)-coupled annexin V-functionalized quantum dots (QDs) and their application to NIR optical detection of apoptotic cells.
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Affiliation(s)
- Setsuko Tsuboi
- Quantitative Biology Center (QBiC), RIKEN, Furuedai 6-2-3, Suita, Osaka, 565-0874, Japan
| | - Takashi Jin
- Quantitative Biology Center (QBiC), RIKEN, Furuedai 6-2-3, Suita, Osaka, 565-0874, Japan
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14
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Morishita Y, Hironaka KI, Lee SW, Jin T, Ohtsuka D. Reconstructing 3D deformation dynamics for curved epithelial sheet morphogenesis from positional data of sparsely-labeled cells. Nat Commun 2017; 8:15. [PMID: 28465614 PMCID: PMC5432036 DOI: 10.1038/s41467-017-00023-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 02/17/2017] [Indexed: 11/09/2022] Open
Abstract
Quantifying global tissue deformation patterns is essential for understanding how organ-specific morphology is generated during development and regeneration. However, due to imaging difficulties and complex morphology, little is known about deformation dynamics for most vertebrate organs such as the brain and heart. To better understand these dynamics, we propose a method to precisely reconstruct global deformation patterns for three-dimensional morphogenesis of curved epithelial sheets using positional data from labeled cells representing only 1–10% of the entire tissue with limited resolution. By combining differential-geometrical and Bayesian frameworks, the method is applicable to any morphology described with arbitrary coordinates, and ensures the feasibility of analyzing many vertebrate organs. Application to data from chick forebrain morphogenesis demonstrates that our method provides not only a quantitative description of tissue deformation dynamics but also predictions of the mechanisms that determine organ-specific morphology, which could form the basis for the multi-scale understanding of organ morphogenesis. Quantifying deformation patterns of curved epithelial sheets is challenging owing to imaging difficulties. Here the authors develop a method to obtain a quantitative description of 3D tissue deformation dynamics from a small set of cell positional data and applied it to chick forebrain morphogenesis.
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Affiliation(s)
- Yoshihiro Morishita
- Laboratory for Developmental Morphogeometry, RIKEN Quantitative Biology Center, Kobe, 650-0047, Japan.
| | - Ken-Ichi Hironaka
- Laboratory for Developmental Morphogeometry, RIKEN Quantitative Biology Center, Kobe, 650-0047, Japan.,Research Fellow of the Japan Society for the Promotion of Science, Tokyo, Japan
| | - Sang-Woo Lee
- Laboratory for Developmental Morphogeometry, RIKEN Quantitative Biology Center, Kobe, 650-0047, Japan
| | - Takashi Jin
- Laboratory for Nano-Bio Probes, RIKEN Quantitative Biology Center, Osaka, 565-0874, Japan
| | - Daisuke Ohtsuka
- Laboratory for Developmental Morphogeometry, RIKEN Quantitative Biology Center, Kobe, 650-0047, Japan
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15
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Thao CTB, Huy BT, Sharipov M, Kim JI, Dao VD, Moon JY, Lee YI. Yb 3+,Er 3+,Eu 3+-codoped YVO 4 material for bioimaging with dual mode excitation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:990-997. [PMID: 28415555 DOI: 10.1016/j.msec.2017.02.169] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/27/2016] [Accepted: 02/28/2017] [Indexed: 11/29/2022]
Abstract
We propose an efficient bioimaging strategy using Yb3+,Er3+,Eu3+-triplet doped YVO4 nanoparticles which were synthesized with polymer as a template. The obtained particles possess nanoscale, uniform, and flexible excitation. The effect of Eu3+ ions on the luminescence properties of YVO4:Yb3+,Er3+,Eu3+ was investigated. The upconversion mechanism of the prepared material was also discussed. The structure and optical properties of the prepared material were characterized by using X-ray diffraction (XRD), Fourier-transform IR spectroscopy (FTIR), scanning electron microscopy (SEM), Transmission electron microscopy (TEM) upconversion and photoluminescence spectra. The Commission International de I'Eclairage (CIE) chromaticity coordinates was investigated to confirm the performance of color luminescent emission. The prepared YVO4:Yb3+,Er3+,Eu3+ nanoparticles could be easily dispersed in water by surface modification with cysteine (Cys) and glutathione (GSH). The aqueous dispersion of the modified YVO4:Yb3+,Er3+,Eu3+ exhibits bright upconversion and downconversion luminescence and has been applied for bioimaging of HeLa cells. Our developed material with dual excitation offers a promising advance in bioimaging.
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Affiliation(s)
- Chu Thi Bich Thao
- Department of Chemistry, Changwon National University, Changwon 641-773, Republic of Korea
| | - Bui The Huy
- Department of Chemistry, Changwon National University, Changwon 641-773, Republic of Korea; Institute of Research and Development, Duy Tan University, K7/25 Quang Trung, Da Nang, Vietnam
| | - Mirkomil Sharipov
- Department of Chemistry, Changwon National University, Changwon 641-773, Republic of Korea
| | - Jin-Ik Kim
- Department of Biochemistry and Health Science, Changwon National University, Changwon 641-773, Republic of Korea
| | - Van-Duong Dao
- Department of Chemical Engineering & Applied Chemistry, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - Ja-Young Moon
- Department of Biochemistry and Health Science, Changwon National University, Changwon 641-773, Republic of Korea
| | - Yong-Ill Lee
- Department of Chemistry, Changwon National University, Changwon 641-773, Republic of Korea.
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16
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Tsuboi S, Sasaki A, Sakata T, Yasuda H, Jin T. Immunoglobulin binding (B1) domain mediated antibody conjugation to quantum dots for in vitro and in vivo molecular imaging. Chem Commun (Camb) 2017; 53:9450-9453. [DOI: 10.1039/c7cc04966h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A facile method for the preparation of antibody–quantum dot conjugates using the immunoglobulin binding (B1) domain of protein G is presented. The utility of antibody–quantum dot conjugates using the B1 domain is demonstrated for fluorescence imaging of breast tumor cellsin vitroandin vivo.
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Affiliation(s)
- Setsuko Tsuboi
- Laboratory for Nano-Bio Probes
- Quantitative Biology Center (QBiC)
- RIKEN
- Suita
- Japan
| | - Akira Sasaki
- Laboratory for Nano-Bio Probes
- Quantitative Biology Center (QBiC)
- RIKEN
- Suita
- Japan
| | - Takao Sakata
- Research Center for Ultra-High Voltage Electron Microscopy
- Osaka University
- Ibaraki
- Japan
| | - Hidehiro Yasuda
- Research Center for Ultra-High Voltage Electron Microscopy
- Osaka University
- Ibaraki
- Japan
| | - Takashi Jin
- Laboratory for Nano-Bio Probes
- Quantitative Biology Center (QBiC)
- RIKEN
- Suita
- Japan
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17
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Shroder DY, Lippert LG, Goldman YE. Single molecule optical measurements of orientation and rotations of biological macromolecules. Methods Appl Fluoresc 2016; 4:042004. [PMID: 28192292 PMCID: PMC5308470 DOI: 10.1088/2050-6120/4/4/042004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Subdomains of macromolecules often undergo large orientation changes during their catalytic cycles that are essential for their activity. Tracking these rearrangements in real time opens a powerful window into the link between protein structure and functional output. Site-specific labeling of individual molecules with polarized optical probes and measurement of their spatial orientation can give insight into the crucial conformational changes, dynamics, and fluctuations of macromolecules. Here we describe the range of single molecule optical technologies that can extract orientation information from these probes, review the relevant types of probes and labeling techniques, and highlight the advantages and disadvantages of these technologies for addressing specific inquiries.
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19
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Lai L, Sheng SY, Mei P, Liu Y, Guo QL. Hydrothermal synthesis for high-quality glutathione-capped CdxZn1 - xSe and CdxZn1 - xSe/ZnS alloyed quantum dots and its application in Hg(II) sensing. LUMINESCENCE 2016; 32:231-239. [DOI: 10.1002/bio.3174] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 05/20/2016] [Accepted: 05/23/2016] [Indexed: 01/12/2023]
Affiliation(s)
- Lu Lai
- College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou Hubei People's Republic of China
| | - Si-Yu Sheng
- College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou Hubei People's Republic of China
| | - Ping Mei
- College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou Hubei People's Republic of China
| | - Yi Liu
- State Key Laboratory of Virology and Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education); College of Chemistry and Molecule Sciences, Wuhan University; Wuhan Hubei People's Republic of China
| | - Qing-Lian Guo
- Zhongnan Hospital of Wuhan University; Wuhan Hubei People's Republic of China
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20
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Lippert LG, Hallock JT, Dadosh T, Diroll BT, Murray CB, Goldman YE. NeutrAvidin Functionalization of CdSe/CdS Quantum Nanorods and Quantification of Biotin Binding Sites using Biotin-4-Fluorescein Fluorescence Quenching. Bioconjug Chem 2016; 27:562-8. [PMID: 26722835 DOI: 10.1021/acs.bioconjchem.5b00577] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We developed methods to solubilize, coat, and functionalize with NeutrAvidin elongated semiconductor nanocrystals (quantum nanorods, QRs) for use in single molecule polarized fluorescence microscopy. Three different ligands were compared with regard to efficacy for attaching NeutrAvidin using the "zero-length cross-linker" 1-ethyl-3-[3-(dimethylamino)propyl]carbodiimide (EDC). Biotin-4-fluorescene (B4F), a fluorophore that is quenched when bound to avidin proteins, was used to quantify biotin binding activity of the NeutrAvidin coated QRs and biotin binding activity of commercially available streptavidin coated quantum dots (QDs). All three coating methods produced QRs with NeutrAvidin coating density comparable to the streptavidin coating density of the commercially available quantum dots (QDs) in the B4F assay. One type of QD available from the supplier (ITK QDs) exhibited ∼5-fold higher streptavidin surface density compared to our QRs, whereas the other type of QD (PEG QDs) had 5-fold lower density. The number of streptavidins per QD increased from ∼7 streptavidin tetramers for the smallest QDs emitting fluorescence at 525 nm (QD525) to ∼20 tetramers for larger, longer wavelength QDs (QD655, QD705, and QD800). QRs coated with NeutrAvidin using mercaptoundecanoicacid (MUA) and QDs coated with streptavidin bound to biotinylated cytoplasmic dynein in single molecule TIRF microscopy assays, whereas Poly(maleic anhydride-alt-1-ocatdecene) (PMAOD) or glutathione (GSH) QRs did not bind cytoplasmic dynein. The coating methods require optimization of conditions and concentrations to balance between substantial NeutrAvidin binding vs tendency of QRs to aggregate and degrade over time.
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Affiliation(s)
| | | | - Tali Dadosh
- Electron Microscopy Unit, Department of Chemical Research Support, Weizmann Institute of Science , Rehovot 7610001, Israel
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21
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Asik D, Yagci MB, Demir Duman F, Yagci Acar H. One step emission tunable synthesis of PEG coated Ag2S NIR quantum dots and the development of receptor targeted drug delivery vehicles thereof. J Mater Chem B 2016; 4:1941-1950. [DOI: 10.1039/c5tb02599k] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Emission tunable Ag2S–PEG–folic acid QDOTs synthesized in a single step in water are effective theranostic nanoparticles.
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Affiliation(s)
- D. Asik
- Koc University
- Graduate School of Materials Science and Engineering
- Istanbul
- Turkey
| | - M. B. Yagci
- Koc University, Surface Science and Technology Center (KUYTAM)
- Istanbul
- Turkey
| | - F. Demir Duman
- Koc University
- Graduate School of Materials Science and Engineering
- Istanbul
- Turkey
| | - H. Yagci Acar
- Koc University
- Graduate School of Materials Science and Engineering
- Istanbul
- Turkey
- Koc University, Surface Science and Technology Center (KUYTAM)
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22
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Komatsuzaki A, Ohyanagi T, Tsukasaki Y, Miyanaga Y, Ueda M, Jin T. Compact halo-ligand-conjugated quantum dots for multicolored single-molecule imaging of overcrowding GPCR proteins on cell membranes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:1396-1401. [PMID: 25504902 DOI: 10.1002/smll.201402508] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 09/19/2014] [Indexed: 06/04/2023]
Abstract
To detect single molecules within the optical diffraction limit (< ca. 200 nm), a multicolored imaging technique is developed using Halo-ligand conjugated quantum dots (Halo-QDs; <6 nm in diameter). Using three types of Halo-QDs, multicolored single-molecule fluorescence imaging of GPCR proteins in Dictyostelium cells is achieved.
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Affiliation(s)
- Akihito Komatsuzaki
- Laboratory for Nano-Bio Probes, Quantitative Biology Center, Riken, Suita, 565-0874, Osaka, Japan
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23
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Sasaki A, Tsukasaki Y, Komatsuzaki A, Sakata T, Yasuda H, Jin T. Recombinant protein (EGFP-Protein G)-coated PbS quantum dots for in vitro and in vivo dual fluorescence (visible and second-NIR) imaging of breast tumors. NANOSCALE 2015; 7:5115-9. [PMID: 25564367 DOI: 10.1039/c4nr06480a] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We report a one-step synthetic strategy for the preparation of recombinant protein (EGFP-Protein G)-coated PbS quantum dots for dual (visible and second-NIR) fluorescence imaging of breast tumors at the cellular and whole-body level.
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Affiliation(s)
- Akira Sasaki
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8566, Japan.
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24
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Surface functionalization of quantum dots for biological applications. Adv Colloid Interface Sci 2015; 215:28-45. [PMID: 25467038 DOI: 10.1016/j.cis.2014.11.004] [Citation(s) in RCA: 128] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 10/25/2014] [Accepted: 11/10/2014] [Indexed: 01/17/2023]
Abstract
Quantum dots are a group of inorganic nanomaterials exhibiting exceptional optical and electronic properties which impart distinct advantages over traditional fluorescent organic dyes in terms of tunable broad excitation and narrow emission spectra, signal brightness, high quantum yield and photo-stability. Aqueous solubility and surface functionalization are the most common problems for QDs employed in biological research. This review addresses the recent research progress made to improve aqueous solubility, functionalization of biomolecules to QD surface and the poorly understood chemistry involved in the steps of bio-functionalization of such nanoparticles.
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25
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Ichimura T, Jin T, Fujita H, Higuchi H, Watanabe TM. Nano-scale measurement of biomolecules by optical microscopy and semiconductor nanoparticles. Front Physiol 2014; 5:273. [PMID: 25120488 PMCID: PMC4114191 DOI: 10.3389/fphys.2014.00273] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Accepted: 07/05/2014] [Indexed: 12/14/2022] Open
Abstract
Over the past decade, great developments in optical microscopy have made this technology increasingly compatible with biological studies. Fluorescence microscopy has especially contributed to investigating the dynamic behaviors of live specimens and can now resolve objects with nanometer precision and resolution due to super-resolution imaging. Additionally, single particle tracking provides information on the dynamics of individual proteins at the nanometer scale both in vitro and in cells. Complementing advances in microscopy technologies has been the development of fluorescent probes. The quantum dot, a semi-conductor fluorescent nanoparticle, is particularly suitable for single particle tracking and super-resolution imaging. This article overviews the principles of single particle tracking and super resolution along with describing their application to the nanometer measurement/observation of biological systems when combined with quantum dot technologies.
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Affiliation(s)
- Taro Ichimura
- Laboratory for Comprehensive Bioimaging, RIKEN Quantitative Biology Center Suita, Osaka, Japan
| | - Takashi Jin
- Laboratory for Nano-Bio Probes, RIKEN Quantitative Biology Center Suita, Osaka, Japan ; Graduate School of Frontier Biosciences, Osaka University Suita, Osaka, Japan ; WPI, Immunology Frontier Research Center, Osaka University Suita, Osaka, Japan
| | - Hideaki Fujita
- Laboratory for Comprehensive Bioimaging, RIKEN Quantitative Biology Center Suita, Osaka, Japan ; WPI, Immunology Frontier Research Center, Osaka University Suita, Osaka, Japan
| | - Hideo Higuchi
- Department of Physics, School of Science, The University of Tokyo Bunkyo, Tokyo, Japan
| | - Tomonobu M Watanabe
- Laboratory for Comprehensive Bioimaging, RIKEN Quantitative Biology Center Suita, Osaka, Japan ; Graduate School of Frontier Biosciences, Osaka University Suita, Osaka, Japan ; WPI, Immunology Frontier Research Center, Osaka University Suita, Osaka, Japan
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26
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A Turn-on Fluorescent Probe Based on Quantum Dots for Detection of Trace Glutamate Dehydrogenase. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2014. [DOI: 10.1016/s1872-2040(13)60717-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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27
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Tan L, Wan A, Li H. Synthesis of near-infrared quantum dots in cultured cancer cells. ACS APPLIED MATERIALS & INTERFACES 2014; 6:18-23. [PMID: 24344828 DOI: 10.1021/am404534v] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Intracellular synthesis of near-infrared fluorescent silver sulfide quantum dots in HepG2 cancer cells is demonstrated. By delivering quantum dot precursors into cultured hepatoma carcinoma cells (HepG2 cells), silver sulfide quantum dots with emission efficiency qualified for in vivo imaging were successfully synthesized with the aid of endogenous glutathione in the cells.
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Affiliation(s)
- Lianjiang Tan
- School of Chemistry and Chemical Engineeringand ‡School of Pharmacy, Shanghai Jiao Tong University , Shanghai, 200240, China
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28
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Zhao X, Zhang W, Wu Y, Liu H, Hao X. Facile fabrication of OA-POSS modified near-infrared-emitting CdSeTe alloyed quantum dots and their bioapplications. NEW J CHEM 2014. [DOI: 10.1039/c4nj00322e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highly biocompatible near-infrared-emitting OA-POSS modified CdSeTe QDs were fabricated in aqueous medium and were successfully applied to SiHa cell imaging.
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Affiliation(s)
- Xue Zhao
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100, P. R. China
| | - Weijia Zhang
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100, P. R. China
| | - Yongzhong Wu
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100, P. R. China
| | - Hongzhi Liu
- Key Laboratory of Special Functional Aggregated Materials
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan, P. R. China
| | - Xiaopeng Hao
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100, P. R. China
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29
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Wu B, Ohno N, Saitoh Y, Bai Y, Huang Z, Terada N, Ohno S. Immuno- and Enzyme-histochemistry of HRP for Demonstration of Blood Vessel Permeability in Mouse Thymic Tissues by "In Vivo Cryotechnique". Acta Histochem Cytochem 2014; 47:273-88. [PMID: 25859061 PMCID: PMC4387264 DOI: 10.1267/ahc.14038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 09/29/2014] [Indexed: 11/22/2022] Open
Abstract
It is difficult to understand the in vivo permeability of thymic blood vessels, but “in vivo cryotechnique” (IVCT) is useful to capture dynamic blood flow conditions. We injected various concentrations of horseradish peroxidase (HRP) with or without quantum dots into anesthetized mice via left ventricles to examine architectures of thymic blood vessels and their permeability at different time intervals. At 30 sec after HRP (100 mg/ml) injection, enzyme reaction products were weakly detected in interstitium around some thick blood vessels of corticomedullary boundary areas, but within capillaries of cortical areas. At 1 and 3 min, they were more widely detected in interstitium around all thick blood vessels of the boundary areas. At 10 min, they were diffusely detected throughout interstitium of cortical areas, and more densely seen in medullary areas. At 15 min, however, they were uniformly detected throughout interstitium outside blood vessels. At 30 min, phagocytosis of HRP by macrophages was scattered throughout the interstitium, which was accompanied by decrease of HRP reaction intensity in interstitial matrices. Thus, time-dependent HRP distributions in living mice indicate that molecular permeability and diffusion depend on different areas of thymic tissues, resulting from topographic variations of local interstitial flow starting from corticomedullary areas.
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Affiliation(s)
- Bao Wu
- Department of Anatomy and Molecular Histology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
| | - Nobuhiko Ohno
- Department of Anatomy and Molecular Histology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
| | - Yurika Saitoh
- Department of Anatomy and Molecular Histology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
| | - Yuqin Bai
- Department of Anatomy and Molecular Histology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
| | - Zheng Huang
- Department of Anatomy and Molecular Histology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
| | - Nobuo Terada
- Department of Anatomy and Molecular Histology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
| | - Shinichi Ohno
- Department of Anatomy and Molecular Histology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
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30
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Tsukasaki Y, Morimatsu M, Nishimura G, Sakata T, Yasuda H, Komatsuzaki A, Watanabe TM, Jin T. Synthesis and optical properties of emission-tunable PbS/CdS core–shell quantum dots for in vivo fluorescence imaging in the second near-infrared window. RSC Adv 2014. [DOI: 10.1039/c4ra06098a] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
This paper describes the synthesis and optical properties of PbS/CdS quantum dots for in vivo fluorescence imaging.
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Affiliation(s)
| | | | - Goro Nishimura
- Research Institute for Electronic Science
- Hokkaido University
- Sapporo 001-0020, Japan
| | - Takao Sakata
- Research Center for Ultra-High Voltage Electron Microscopy
- Osaka University
- Ibaraki, Japan
| | - Hidehiro Yasuda
- Research Center for Ultra-High Voltage Electron Microscopy
- Osaka University
- Ibaraki, Japan
| | | | - Tomonobu M. Watanabe
- RIKEN Quantitative Biology Center
- Suita, Japan
- Graduate School of Frontier Biosciences
- Osaka University
- Suita, Japan
| | - Takashi Jin
- RIKEN Quantitative Biology Center
- Suita, Japan
- Graduate School of Frontier Biosciences
- Osaka University
- Suita, Japan
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31
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Saitoh Y, Terada N, Ohno N, Hamano A, Okumura N, Jin T, Saiki I, Ohno S. Imaging of thrombosis and microcirculation in mouse lungs of initial melanoma metastasis with in vivo cryotechnique. Microvasc Res 2013; 91:73-83. [PMID: 24316421 DOI: 10.1016/j.mvr.2013.11.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 11/22/2013] [Accepted: 11/23/2013] [Indexed: 01/30/2023]
Abstract
Microscopic bioimaging of blood flow and distribution of cancer cells in lungs is essential to analyze mechanism of lung metastasis. Such cancer metastasis has been well known to induce hypercoagulable states and thrombosis. In histopathological tissue sections, however, it has been difficult to capture rapid phenomenon of thrombus formation due to technical problems associated with much less retention of soluble serum components as well as dynamic histological features reflecting their living states. In this study, to achieve bioimaging of both hypercoagulable states and thrombosis induced by early metastasis of mouse B16-BL6 melanoma, "in vivo cryotechnique" (IVCT) was used, which retained soluble components at their original sites. Glutathione-coated quantum dots (QDs) were subsequently injected after melanoma cells via right ventricles to examine plasma flow with fluorescence emission. At 5s after the melanoma injection, melanoma cells were mostly stacked and intruded in alveolar capillaries with changing their shapes. Assembly of platelets initially appeared at 1min, and they aggregated around the stacked melanoma cells at 5min. Such aggregated platelets were immunopositive for both phospho-tyrosine 418 and 527 of Src, indicating their partial signal activation. Fibrin monomers were also immunolocalized around both melanoma cells and platelet aggregates, and massive immunoreaction deposits of fibrinogen were also detected near the same areas, but more strongly detected around the melanoma cells, indicating initial thrombus formation. In those areas, QDs were rarely detected, probably because of the lack of blood supply. Thus, IVCT revealed histopathological features of initial thrombosis under their circulatory conditions.
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Affiliation(s)
- Yurika Saitoh
- Department of Anatomy and Molecular Histology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo City, Yamanashi 409-3898, Japan.
| | - Nobuo Terada
- Department of Anatomy and Molecular Histology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo City, Yamanashi 409-3898, Japan; Department of Occupational Therapy, School of Health Sciences, Shinshu University School of Medicine, Matsumoto City, Nagano 390-8621, Japan.
| | - Nobuhiko Ohno
- Department of Anatomy and Molecular Histology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo City, Yamanashi 409-3898, Japan.
| | - Akiei Hamano
- Central Research Laboratory of Nissui Pharmaceutical Co. Ltd., Yuuki City, Ibaraki 307-0036, Japan.
| | - Nobuo Okumura
- Department of Biomedical Laboratory Sciences, Laboratory of Clinical Chemistry, School of Health Sciences, Shinshu University School of Medicine, Matsumoto City, Nagano 390-8621, Japan.
| | - Takashi Jin
- Laboratory for Nano-Bio Probes, RIKEN Quantitative Biology Center, Suita City, Osaka 565-0874, Japan.
| | - Ikuo Saiki
- Division of Pathogenic Biochemistry, Institute of Natural Medicine, University of Toyama, Toyama City, Toyama 930-0194, Japan.
| | - Shinichi Ohno
- Department of Anatomy and Molecular Histology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo City, Yamanashi 409-3898, Japan.
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Watanabe TM, Fujii F, Jin T, Umemoto E, Miyasaka M, Fujita H, Yanagida T. Four-dimensional spatial nanometry of single particles in living cells using polarized quantum rods. Biophys J 2013; 105:555-64. [PMID: 23931303 PMCID: PMC3736678 DOI: 10.1016/j.bpj.2013.07.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 06/28/2013] [Accepted: 07/01/2013] [Indexed: 11/29/2022] Open
Abstract
Single particle tracking is widely used to study protein movement with high spatiotemporal resolution both in vitro and in cells. Quantum dots, which are semiconductor nanoparticles, have recently been employed in single particle tracking because of their intense and stable fluorescence. Although single particles inside cells have been tracked in three spatial dimensions (X, Y, Z), measurement of the angular orientation of a molecule being tracked would significantly enhance our understanding of the molecule's function. In this study, we synthesized highly polarized, rod-shaped quantum dots (Qrods) and developed a coating method that optimizes the Qrods for biological imaging. We describe a Qrod-based single particle tracking technique that blends optical nanometry with nanomaterial science to simultaneously measure the three-dimensional and angular movements of molecules. Using Qrods, we spatially tracked a membrane receptor in living cells in four dimensions with precision close to the single-digit range in nanometers and degrees.
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33
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Chen J, Terada N, Saitoh Y, Huang Z, Ohno N, Ohno S. Detection of MAPK signal transduction proteins in an ischemia/reperfusion model of mouse intestine using in vivo cryotechnique. Histochem Cell Biol 2013; 140:491-505. [DOI: 10.1007/s00418-013-1113-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/08/2013] [Indexed: 12/24/2022]
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Fang M, Peng CW, Pang DW, Li Y. Quantum dots for cancer research: current status, remaining issues, and future perspectives. Cancer Biol Med 2013; 9:151-63. [PMID: 23691472 PMCID: PMC3643664 DOI: 10.7497/j.issn.2095-3941.2012.03.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Accepted: 08/19/2012] [Indexed: 12/31/2022] Open
Abstract
Cancer is a major threat to public health in the 21st century because it is one of the leading causes of death worldwide. The mechanisms of carcinogenesis, cancer invasion, and metastasis remain unclear. Thus, the development of a novel approach for cancer detection is urgent, and real-time monitoring is crucial in revealing its underlying biological mechanisms. With the optical and chemical advantages of quantum dots (QDs), QD-based nanotechnology is helpful in constructing a biomedical imaging platform for cancer behavior study. This review mainly focuses on the application of QD-based nanotechnology in cancer cell imaging and tumor microenvironment studies both in vivo and in vitro, as well as the remaining issues and future perspectives.
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Affiliation(s)
- Min Fang
- Department of Oncology, Zhongnan Hospital of Wuhan University, Hubei Key Laboratory of Tumor Biological Behaviors & Hubei Cancer Clinical Study Center, Wuhan 430071, China
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Algarra M, Radotić K, Kalauzi A, Alonso B, Casado C, Esteves da Silva J. Component analysis of fluorescence spectra of thiol DAB dendrimer/ZnSe-PEA nanoparticles. Talanta 2013; 105:267-71. [DOI: 10.1016/j.talanta.2012.09.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Revised: 08/30/2012] [Accepted: 09/10/2012] [Indexed: 10/27/2022]
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36
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Wu J, Xu F, Zhu K, Wang Z, Wang Y, Zhao K, Li X, Jiang H, Ding S. Rapid and Sensitive Fluoroimmunoassay Based on Quantum Dots for Detection of Melamine in Milk. ANAL LETT 2013. [DOI: 10.1080/00032719.2012.713066] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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37
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Nakane Y, Tsukasaki Y, Sakata T, Yasuda H, Jin T. Aqueous synthesis of glutathione-coated PbS quantum dots with tunable emission for non-invasive fluorescence imaging in the second near-infrared biological window (1000–1400 nm). Chem Commun (Camb) 2013; 49:7584-6. [DOI: 10.1039/c3cc44000a] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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38
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Hasegawa M, Tsukasaki Y, Ohyanagi T, Jin T. Bioluminescence resonance energy transfer coupled near-infrared quantum dots using GST-tagged luciferase for in vivo imaging. Chem Commun (Camb) 2013; 49:228-30. [DOI: 10.1039/c2cc36870f] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Quantum Dot-Loaded Liposomes to Evaluate the Behavior of Drug Carriers after Oral Administration. JOURNAL OF PHARMACEUTICS 2013; 2013:848275. [PMID: 26555997 PMCID: PMC4590795 DOI: 10.1155/2013/848275] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 07/02/2013] [Indexed: 11/17/2022]
Abstract
We have developed submicron-sized liposomes modified with a mucoadhesive polymer to enhance peptide drug absorption after oral administration. Liposomal behavior in the gastrointestinal tract is a critical factor for effective peptide drug delivery. The purpose of this study was to prepare quantum dot- (QD-) loaded submicron-sized liposomes and examine liposomal behavior in the body after oral administration using in vivo fluorescence imaging. Two types of CdSe/CdZnS QDs with different surface properties were used: hydrophobic (unmodified) QDs and hydrophilic QDs with glutathione (GSH) surface modifications. QD- and GSH-QD-loaded liposomes were prepared by a thin film hydration method. Transmission electron microscopy revealed that QDs were embedded in the liposomal lipid bilayer. Conversely, GSH-QDs were present in the inner aqueous phase. Some of the GSH-QDs were electrostatically associated with the lipid membrane of stearylamine-bearing cationic liposomes. QD-loaded liposomes were detected in Caco-2 cells after exposure to the liposomes, and these liposomes were not toxic to the Caco-2 cells. Furthermore, we evaluated the in vivo bioadhesion and intestinal penetration of orally administered QD-loaded liposomes by observing the intestinal segment using confocal laser scanning microscopy.
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Multilayered, core/shell nanoprobes based on magnetic ferric oxide particles and quantum dots for multimodality imaging of breast cancer tumors. Biomaterials 2012; 33:8486-94. [DOI: 10.1016/j.biomaterials.2012.07.051] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Accepted: 07/24/2012] [Indexed: 01/19/2023]
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Galeone A, Vecchio G, Malvindi MA, Brunetti V, Cingolani R, Pompa PP. In vivo assessment of CdSe-ZnS quantum dots: coating dependent bioaccumulation and genotoxicity. NANOSCALE 2012; 4:6401-6407. [PMID: 22951747 DOI: 10.1039/c2nr31826a] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Semiconductor nanocrystals, or Quantum Dots (QDs), have gained considerable attention due to their unique size-dependent optical and electronic properties that make them attractive for a wide range of applications, including biology and nanomedicine. Their widespread use, however, poses urgent questions about their potential toxicity, especially because of their heavy metal composition that could cause harmful effects to human health and environment. In this work, we evaluated in vivo the long-term toxicity of CdSe-ZnS QDs with different surface coatings, probing oral administration in the model system Drosophila melanogaster. In particular, we found that all the differently coated QDs significantly affect the lifespan of treated Drosophila populations and induce a marked increase in reactive oxygen species (ROS) levels. Furthermore, we observed that these QDs induce severe genotoxic effects and increased rate of apoptosis in Drosophila haemocytes. These toxic effects were found to be mainly related to the in vivo degradation of QDs with consequent release of Cd(2+) ions, while the coating of QDs can modulate their bioaccumulation in the organism, partly decreasing their overall toxicity.
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Affiliation(s)
- A Galeone
- Istituto Italiano di Tecnologia (IIT), Center for Bio-Molecular Nanotechnologies@UniLe, Via Barsanti - 73010, Arnesano, Lecce, Italy
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Xu J, Ruchala P, Ebenstain Y, Li JJ, Weiss S. Stable, compact, bright biofunctional quantum dots with improved peptide coating. J Phys Chem B 2012; 116:11370-8. [PMID: 22900542 PMCID: PMC3470653 DOI: 10.1021/jp306453y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We developed a new peptide, natural phytochelatin (PC), which tightly binds to CdSe/ZnS quantum dots' (QDs) surfaces and renders them water-soluble. Coating QDs with this flexible and all-hydrophilic peptide offers high colloidal stability, adds only 0.8-0.9 nm to the radius of the particles (as compared to their original inorganic radius), preserves very high quantum yield (QY) in water, and affords facile bioconjugation with various functional groups. We demonstrate specific targeting (with minimal nonspecific binding) of such fluorescein-conjugated QDs to ScFv-fused mouse prion protein expressed in live N2A cells. We also demonstrated homogeneous in vivo biodistribution with no significant toxicity in live zebrafish.
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Affiliation(s)
- Jianmin Xu
- Dept. of Chemistry & Biochemistry, University of California Los Angeles, Los Angeles CA 90095
| | - Piotr Ruchala
- David Geffen School of Medicine, University of California Los Angeles, Los Angeles CA 90095
| | - Yuval Ebenstain
- Dept. of Chemistry & Biochemistry, University of California Los Angeles, Los Angeles CA 90095
| | - Jack J. Li
- Dept. of Chemistry & Biochemistry, University of California Los Angeles, Los Angeles CA 90095
| | - Shimon Weiss
- Dept. of Chemistry & Biochemistry, University of California Los Angeles, Los Angeles CA 90095
- Dept. of Physiology, University of California Los Angeles, Los Angeles CA 90095
- California NanoSystems Institute, University of California Los Angeles, Los Angeles CA 90095
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Yang F, Xu Z, Wang J, Zan F, Dong C, Ren J. Microwave-assisted aqueous synthesis of new quaternary-alloyed CdSeTeS quantum dots; and their bioapplications in targeted imaging of cancer cells. LUMINESCENCE 2012; 28:392-400. [DOI: 10.1002/bio.2395] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Revised: 05/08/2012] [Accepted: 05/16/2012] [Indexed: 01/21/2023]
Affiliation(s)
- Fengzhao Yang
- College of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites; Shanghai Jiaotong University; Shanghai; 200240; People's Republic of China
| | - Zhancheng Xu
- College of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites; Shanghai Jiaotong University; Shanghai; 200240; People's Republic of China
| | - Jinjie Wang
- College of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites; Shanghai Jiaotong University; Shanghai; 200240; People's Republic of China
| | - Feng Zan
- College of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites; Shanghai Jiaotong University; Shanghai; 200240; People's Republic of China
| | - Chaoqing Dong
- College of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites; Shanghai Jiaotong University; Shanghai; 200240; People's Republic of China
| | - Jicun Ren
- College of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites; Shanghai Jiaotong University; Shanghai; 200240; People's Republic of China
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Zhang X, Bloch S, Akers W, Achilefu S. Near-infrared molecular probes for in vivo imaging. CURRENT PROTOCOLS IN CYTOMETRY 2012; Chapter 12:Unit12.27. [PMID: 22470154 PMCID: PMC3334312 DOI: 10.1002/0471142956.cy1227s60] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cellular and tissue imaging in the near-infrared (NIR) wavelengths between 700 and 900 nm is advantageous for in vivo imaging because of the low absorption of biological molecules in this region. This unit presents protocols for small animal imaging using planar and fluorescence lifetime imaging techniques. Included is an overview of NIR fluorescence imaging of cells and small animals using NIR organic fluorophores, nanoparticles, and multimodal imaging probes. The development, advantages, and application of NIR fluorescent probes that have been used for in vivo imaging are also summarized. The use of NIR agents in conjunction with visible dyes and considerations in selecting imaging agents are discussed. We conclude with practical considerations for the use of these dyes in cell and small animal imaging applications.
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Affiliation(s)
- Xuan Zhang
- Department of Radiology, Washington University School of Medicine, St. Louis, Missouri
| | - Sharon Bloch
- Department of Radiology, Washington University School of Medicine, St. Louis, Missouri
| | - Walter Akers
- Department of Radiology, Washington University School of Medicine, St. Louis, Missouri
| | - Samuel Achilefu
- Department of Radiology, Washington University School of Medicine, St. Louis, Missouri
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Phosphorylcholine Self-Assembled Monolayer-Coated Quantum Dots: Real-Time Imaging of Live Animals by Cell Surface Mimetic Glyco-Nanoparticles. Clin Lab Med 2012; 32:73-87. [DOI: 10.1016/j.cll.2011.12.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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47
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Histochemical analyses and quantum dot imaging of microvascular blood flow with pulmonary edema in living mouse lungs by "in vivo cryotechnique". Histochem Cell Biol 2011; 137:137-51. [PMID: 22124864 DOI: 10.1007/s00418-011-0892-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/15/2011] [Indexed: 10/15/2022]
Abstract
Light microscopic imaging of blood vessels and distribution of serum proteins is essential to analyze hemodynamics in living animal lungs under normal respiration or respiratory diseases. In this study, to demonstrate dynamically changing morphology and immunohistochemical images of their living states, "in vivo cryotechnique" (IVCT) combined with freeze-substitution fixation was applied to anesthetized mouse lungs. By hematoxylin-eosin staining, morphological features, such as shapes of alveolar septum and sizes of alveolar lumen, reflected their respiratory conditions in vivo, and alveolar capillaries were filled with variously shaped erythrocytes. Albumin was usually immunolocalized in the capillaries, which was confirmed by double-immunostaining for aquaporin-1 of endothelium. To capture accurate time-courses of blood flow in peripheral pulmonary alveoli, glutathione-coated quantum dots (QDs) were injected into right ventricles, and then IVCT was performed at different time-points after the QD injection. QDs were localized in most arterioles and some alveolar capillaries at 1 s, and later in venules at 2 s, reflecting a typical blood flow direction in vivo. Three-dimensional QD images of microvascular networks were reconstructed by confocal laser scanning microscopy. It was also applied to lungs of acute pulmonary hypertension mouse model. Erythrocytes were crammed in blood vessels, and some serum components leaked into alveolar lumens, as confirmed by mouse albumin immunostaining. Some separated collagen fibers and connecting elastic fibers were still detected in edematous tunica adventitia near terminal bronchioles. Thus, IVCT combined with histochemical approaches enabled us to capture native images of dynamically changing structures and microvascular hemodynamics of living mouse lungs.
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Ohyanagi T, Nagahori N, Shimawaki K, Hinou H, Yamashita T, Sasaki A, Jin T, Iwanaga T, Kinjo M, Nishimura SI. Importance of Sialic Acid Residues Illuminated by Live Animal Imaging Using Phosphorylcholine Self-Assembled Monolayer-Coated Quantum Dots. J Am Chem Soc 2011; 133:12507-17. [DOI: 10.1021/ja111201c] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Tatsuya Ohyanagi
- Field of Drug Discovery Research, Faculty of Advanced Life Science, Hokkaido University, Sapporo, 001-0021, Japan
| | - Noriko Nagahori
- Field of Drug Discovery Research, Faculty of Advanced Life Science, Hokkaido University, Sapporo, 001-0021, Japan
| | - Ken Shimawaki
- Field of Drug Discovery Research, Faculty of Advanced Life Science, Hokkaido University, Sapporo, 001-0021, Japan
| | - Hiroshi Hinou
- Field of Drug Discovery Research, Faculty of Advanced Life Science, Hokkaido University, Sapporo, 001-0021, Japan
| | - Tadashi Yamashita
- Field of Drug Discovery Research, Faculty of Advanced Life Science, Hokkaido University, Sapporo, 001-0021, Japan
| | - Akira Sasaki
- Field of Drug Discovery Research, Faculty of Advanced Life Science, Hokkaido University, Sapporo, 001-0021, Japan
| | - Takashi Jin
- WPI Immunology Frontier Research Center, Osaka University, Yamada-oka 1-3, Suita, Osaka 565-0871, Japan
| | - Toshihiko Iwanaga
- Department of Anatomy, Hokkaido University Graduate School of Medicine, Sapporo, 060-8638, Japan
| | - Masataka Kinjo
- Field of Drug Discovery Research, Faculty of Advanced Life Science, Hokkaido University, Sapporo, 001-0021, Japan
| | - Shin-Ichiro Nishimura
- Field of Drug Discovery Research, Faculty of Advanced Life Science, Hokkaido University, Sapporo, 001-0021, Japan
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Koktysh D, Bright V, Pham W. Fluorescent magnetic hybrid nanoprobe for multimodal bioimaging. NANOTECHNOLOGY 2011; 22:275606. [PMID: 21597146 PMCID: PMC3133788 DOI: 10.1088/0957-4484/22/27/275606] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A fluorescent magnetic hybrid imaging nanoprobe (HINP) was fabricated by the conjugation of superparamagnetic Fe3O4 nanoparticles and visible light emitting (∼600 nm) fluorescent CdTe/CdS quantum dots (QDs). The assembly strategy used the covalent linking of the oxidized dextran shell of magnetic particles to the glutathione ligands of QDs. The synthesized HINP formed stable water-soluble colloidal dispersions. The structure and properties of the particles were characterized by transmission electron and atomic force microscopy, energy dispersive x-ray analysis and inductively coupled plasma optical emission spectroscopy, dynamic light scattering analysis, optical absorption and photoluminescence spectroscopy, and fluorescent imaging. The luminescence imaging region of the nanoprobe was extended to the near-infrared (NIR) (∼800 nm) by conjugation of the superparamagnetic nanoparticles with synthesized CdHgTe/CdS QDs. Cadmium, mercury based QDs in HINP can be easily replaced by novel water-soluble glutathione stabilized AgInS2/ZnS QDs to present a new class of cadmium-free multimodal imaging agents. The observed NIR photoluminescence of fluorescent magnetic nanocomposites supports their use for bioimaging. The developed HINP provides dual-imaging channels for simultaneous optical and magnetic resonance imaging.
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Affiliation(s)
- Dmitry Koktysh
- Department of Chemistry, Vanderbilt University, Station B 351822, Nashville, TN 37235, USA
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50
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Tiwari DK, Jin T, Behari J. Bio-distribution and toxicity assessment of intravenously injected anti-HER2 antibody conjugated CdSe/ZnS quantum dots in Wistar rats. Int J Nanomedicine 2011; 6:463-75. [PMID: 21499435 PMCID: PMC3075911 DOI: 10.2147/ijn.s15124] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2011] [Indexed: 12/03/2022] Open
Abstract
Anti-HER2 antibody conjugated with quantum dots (anti-HER2ab-QDs) is a very recent fluorescent nanoprobe for HER2+ve breast cancer imaging. In this study we investigated in-vivo toxicity of anti-HER2ab conjugated CdSe/ZnS QDs in Wistar rats. For toxicity evaluation of injected QDs sample, body weight, organ coefficient, complete blood count (CBC), biochemistry panel assay (AST, ALT, ALP, and GGTP), comet assay, reactive oxygen species, histology, and apoptosis were determined. Wistar rat (8-10 weeks old) were randomly divided into 4 treatment groups (n = 6). CBC and biochemistry panel assay showed nonsignificant changes in the anti-HER2ab-QDs treated group but these changes were significant (P < 0.05) in QDs treated group. No tissue damage, inflammation, lesions, and QDs deposition were found in histology and TEM images of the anti-HER2ab-QDs treated group. Apoptosis in liver and kidney was not found in the anti-HER2ab-QDs treated group. Animals treated with nonconjugated QDs showed comet formation and apoptosis. Cadmium deposition was confirmed in the QDs treated group compared with the anti-HER2ab-QDs treated group. The QDs concentration (500 nM) used for this study is suitable for in-vivo imaging. The combine data of this study support the biocompatibility of anti-HER2ab-QDs for breast cancer imaging, suggesting that the antibody coating assists in controlling any possible adverse effect of quantum dots.
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Affiliation(s)
- Dhermendra K Tiwari
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Takashi Jin
- WPI-Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Jitendra Behari
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India
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