1
|
Ganguly S, Margel S. Bioimaging Probes Based on Magneto-Fluorescent Nanoparticles. Pharmaceutics 2023; 15:pharmaceutics15020686. [PMID: 36840008 PMCID: PMC9967590 DOI: 10.3390/pharmaceutics15020686] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 02/14/2023] [Accepted: 02/16/2023] [Indexed: 02/19/2023] Open
Abstract
Novel nanomaterials are of interest in biology, medicine, and imaging applications. Multimodal fluorescent-magnetic nanoparticles demand special attention because they have the potential to be employed as diagnostic and medication-delivery tools, which, in turn, might make it easier to diagnose and treat cancer, as well as a wide variety of other disorders. The most recent advancements in the development of magneto-fluorescent nanocomposites and their applications in the biomedical field are the primary focus of this review. We describe the most current developments in synthetic methodologies and methods for the fabrication of magneto-fluorescent nanocomposites. The primary applications of multimodal magneto-fluorescent nanoparticles in biomedicine, including biological imaging, cancer treatment, and drug administration, are covered in this article, and an overview of the future possibilities for these technologies is provided.
Collapse
|
2
|
Das P, Ganguly S, Margel S, Gedanken A. Tailor made magnetic nanolights: fabrication to cancer theranostics applications. NANOSCALE ADVANCES 2021; 3:6762-6796. [PMID: 36132370 PMCID: PMC9419279 DOI: 10.1039/d1na00447f] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 10/12/2021] [Indexed: 05/14/2023]
Abstract
Nanoparticles having magnetic and fluorescent properties could be considered as a gift to materials scientists due to their unique magneto-optical qualities. Multiple component particles can overcome challenges related with a single component and unveil bifunctional/multifunctional features that can enlarge their applications in diagnostic imaging agents and therapeutic delivery vehicles. Bifunctional nanoparticles that have both luminescent and magnetic features are termed as magnetic nanolights. Herein, we present recent progress of magneto-fluorescent nanoparticles (quantum dots based magnetic nanoparticles, Janus particles, and heterocrystalline fluorescent magnetic materials), comprehensively describing fabrication strategies, types, and biomedical applications. In this review, our aim is not only to encompass the preparation strategies of these special types of magneto-fluorescent nanomaterials but also their extensive applications in bioimaging techniques, cancer therapy (targeted and hyperthermic), and sustained release of active agents (drugs, proteins, antibodies, hormones, enzymes, growth factors).
Collapse
Affiliation(s)
- Poushali Das
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University Ramat-Gan 5290002 Israel
- Departments of Chemistry, Bar-Ilan University Ramat-Gan 5290002 Israel
| | - Sayan Ganguly
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University Ramat-Gan 5290002 Israel
- Departments of Chemistry, Bar-Ilan University Ramat-Gan 5290002 Israel
| | - Shlomo Margel
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University Ramat-Gan 5290002 Israel
- Departments of Chemistry, Bar-Ilan University Ramat-Gan 5290002 Israel
| | - Aharon Gedanken
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University Ramat-Gan 5290002 Israel
- Departments of Chemistry, Bar-Ilan University Ramat-Gan 5290002 Israel
| |
Collapse
|
3
|
Alphandéry E. Light-Interacting iron-based nanomaterials for localized cancer detection and treatment. Acta Biomater 2021; 124:50-71. [PMID: 33540060 DOI: 10.1016/j.actbio.2021.01.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/18/2021] [Accepted: 01/19/2021] [Indexed: 12/12/2022]
Abstract
To improve the prognosis of cancer patients, methods of local cancer detection and treatment could be implemented. For that, iron-based nanomaterials (IBN) are particularly well-suited due to their biocompatibility and the various ways in which they can specifically target a tumor, i.e. through passive, active or magnetic targeting. Furthermore, when it is needed, IBN can be associated with well-known fluorescent compounds, such as dyes, clinically approved ICG, fluorescent proteins, or quantum dots. They may also be excited and detected using well-established optical methods, relying on scattering or fluorescent mechanisms, depending on whether IBN are associated with a fluorescent compound or not. Systems combining IBN with optical methods are diverse, thus enabling tumor detection in various ways. In addition, these systems provide a wealth of information, which is inaccessible with more standard diagnostic tools, such as single tumor cell detection, in particular by combining IBN with near-field scanning optical microscopy, dark-field microscopy, confocal microscopy or super-resolution microscopy, or the highlighting of certain dynamic phenomena such as the diffusion of a fluorescent compound in an organism, e.g. using fluorescence lifetime imaging, fluorescence resonance energy transfer, fluorescence anisotropy, or fluorescence tomography. Furthermore, they can in some cases be complemented by a therapeutic approach to destroy tumors, e.g. when the fluorescent compound is a drug, or when a technique such as photo-thermal or photodynamic therapy is employed. This review brings forward the idea that iron-based nanomaterials may be associated with various optical techniques to form a commercially available toolbox, which can serve to locally detect or treat cancer with a better efficacy than more standard medical approaches. STATEMENT OF SIGNIFICANCE: New tools should be developed to improve cancer treatment outcome. For that, two closely-related aspects deserve to be considered, i.e. early tumor detection and local tumor treatment. Here, I present various types of iron-based nanomaterials, which can achieve this double objective when they interact with a beam of light under specific and accurately chosen conditions. Indeed, these materials are biocompatible and can be used/combined with most standard microscopic/optical methods. Thus, these systems enable on the one hand tumor cell detection with a high sensitivity, i.e. down to single tumor cell level, and on the other hand tumor destruction through various mechanisms in a controlled and localized manner by deciding whether or not to apply a beam of light and by having these nanomaterials specifically target tumor cells.
Collapse
|
4
|
Tufani A, Qureshi A, Niazi JH. Iron oxide nanoparticles based magnetic luminescent quantum dots (MQDs) synthesis and biomedical/biological applications: A review. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 118:111545. [DOI: 10.1016/j.msec.2020.111545] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/11/2020] [Accepted: 09/20/2020] [Indexed: 12/20/2022]
|
5
|
Koktysh DS, Pham W. A Combinatorial Approach for the Fabrication of Magneto-Optical Hybrid Nanoparticles. Int J Nanomedicine 2019; 14:9855-9863. [PMID: 31849473 PMCID: PMC6913303 DOI: 10.2147/ijn.s228962] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 10/25/2019] [Indexed: 11/30/2022] Open
Abstract
Introduction The increasing demands for better resolution combined with anatomical information in biomedical imaging necessitate the development of multimodal contrast agents. In this respect, the multivalency of nanotechnology enables the integration of nanomaterials with distinct biophysical properties into a unique probe, capable to exert superior imaging characterstics through synergistic enhancement unmatched by any single modality. Materials and methods Novel magneto-optical hybrid nanoparticles (MOHNPs), comprise semiconductor quantum dots (QDs) tethered on the surface of superparamagnetic iron oxide (SPIO) NPs, were synthesized using a combinatorial approach. The semiconductor components utilized for the synthesis of the hybrid NPs contained cadmium-free QDs, which were stabilized by a variety of functional ligands including thiols, polyethyleneimine (PEI) and amphiphilic polymers. While SPIO NPs were further modified with silica or PEI on the outermost layer. The main mechanism to assemble semiconductor QDs onto the SPIO NPs employed a core-shell approach, in which covalent bonding and electrostatic interaction held the components together. Results The versatility of the NP assembling mechanism described in this work offered a robust and flexible fabrication of MOHNPs. A proof-of-concept study demonstrated desterous coating of folic acid onto the surface of MOHNPs to create a targeted imaging probe. The emission of the resulted hybrid NPs extended in the near-infrared region, suitable for in vivo applications. Conclusion This novel assembling technology offers far-reaching capabilities to generate complex multimodal nanoiamging probes.
Collapse
Affiliation(s)
- Dmitry S Koktysh
- Department of Chemistry, Vanderbilt University, Nashville, TN 37235, USA.,Vanderbilt Institute for Nanoscale Science and Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Wellington Pham
- Institute of Imaging Science, Vanderbilt University, Nashville, TN 37232, USA.,Department of Radiology and Radiological Sciences, Vanderbilt University, Nashville, TN 37232, USA.,Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA
| |
Collapse
|
6
|
Banerjee A, Bertolesi GE, Ling CC, Blasiak B, Purchase A, Calderon O, Tomanek B, Trudel S. Bifunctional Pyrrolidin-2-one Terminated Manganese Oxide Nanoparticles for Combined Magnetic Resonance and Fluorescence Imaging. ACS APPLIED MATERIALS & INTERFACES 2019; 11:13069-13078. [PMID: 30883086 DOI: 10.1021/acsami.8b21762] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Multimodal probes are an asset for simplified, improved medical imaging. In particular, fluorescence and magnetic resonance imaging (MRI) are sought-after combined capabilities. Here, we show that pyrrolidin-2-one-capped manganese oxide nanoparticles (MnOpyrr NPs) combine MRI with fluorescence microscopy to function as efficient bifunctional bio-nanoprobes. We employ a one-pot synthesis for ca. 10 nm MnO NPs, wherein manganese(II) 2,4-pentadionate is thermally decomposed using pyrrolidin-2-one as a solvent and capping ligand. The MnOpyrr NPs are soluble in water without any further postsynthetic modifications. The r1 relaxivity and r2 /r1 ratio indicate that these NPs are potential T1 MRI contrast agents at clinical (3 T) and ultrahigh (9.4 T) magnetic fields. Serendipitously, the as-prepared NPs are photoluminescent. The unexpected luminescence is ascribed to the modification of the pyrrolidin-2-one during the thermal treatment. MnOpyrr NPs are successfully used to enable fluorescence microscopy of HeLa cells, demonstrating bifunctional imaging capabilities. A low cytotoxic response in two distinct cell types (HeLa, HepG2) supports the suitability of MnOpyrr NPs for biological imaging applications.
Collapse
Affiliation(s)
- Abhinandan Banerjee
- Department of Chemistry , University of Calgary , 2500 University Drive NW , Calgary , Alberta , Canada T2N 1N4
| | - Gabriel E Bertolesi
- Hotchkiss Brain Institute, Alberta Children's Hospital Research Institute, Department of Cell Biology and Anatomy , University of Calgary , 3330 Hospital Drive NW , Calgary , Alberta , Canada T2N 4N1
| | - Chang-Chun Ling
- Department of Chemistry , University of Calgary , 2500 University Drive NW , Calgary , Alberta , Canada T2N 1N4
| | - Barbara Blasiak
- Department of Clinical Neurosciences , University of Calgary , 3330 Hospital Drive NW , Calgary , Alberta , Canada T2N 4N1
- Institute of Nuclear Physics , Polish Academy of Sciences , 152 Radzikowskiego , Krakow 31-342 , Poland
| | - Aaron Purchase
- Department of Oncology, Cross Cancer Institute , University of Alberta , 11560 University Avenue , Edmonton , Alberta , Canada T6G 1Z2
| | - Oliver Calderon
- Department of Chemistry , University of Calgary , 2500 University Drive NW , Calgary , Alberta , Canada T2N 1N4
| | - Boguslaw Tomanek
- Department of Clinical Neurosciences , University of Calgary , 3330 Hospital Drive NW , Calgary , Alberta , Canada T2N 4N1
- Institute of Nuclear Physics , Polish Academy of Sciences , 152 Radzikowskiego , Krakow 31-342 , Poland
- Department of Oncology, Cross Cancer Institute , University of Alberta , 11560 University Avenue , Edmonton , Alberta , Canada T6G 1Z2
| | - Simon Trudel
- Department of Chemistry , University of Calgary , 2500 University Drive NW , Calgary , Alberta , Canada T2N 1N4
| |
Collapse
|
7
|
Recent Progress in Synthesis and Functionalization of Multimodal Fluorescent-Magnetic Nanoparticles for Biological Applications. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8020172] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
There is a great interest in the development of new nanomaterials for multimodal imaging applications in biology and medicine. Multimodal fluorescent-magnetic based nanomaterials deserve particular attention as they can be used as diagnostic and drug delivery tools, which could facilitate the diagnosis and treatment of cancer and many other diseases. This review focuses on the recent developments of magnetic-fluorescent nanocomposites and their biomedical applications. The recent advances in synthetic strategies and approaches for the preparation of fluorescent-magnetic nanocomposites are presented. The main biomedical uses of multimodal fluorescent-magnetic nanomaterials, including biological imaging, cancer therapy and drug delivery, are discussed, and prospects of this field are outlined.
Collapse
|
8
|
Khosroshahi HT, Abedi B, Daneshvar S, Sarbaz Y, Shakeri Bavil A. Future of the Renal Biopsy: Time to Change the Conventional Modality Using Nanotechnology. Int J Biomed Imaging 2017; 2017:6141734. [PMID: 28316612 PMCID: PMC5337808 DOI: 10.1155/2017/6141734] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 12/20/2016] [Accepted: 01/05/2017] [Indexed: 12/19/2022] Open
Abstract
At the present time, imaging guided renal biopsy is used to provide diagnoses in most types of primary and secondary renal diseases. It has been claimed that renal biopsy can provide a link between diagnosis of renal disease and its pathological conditions. However, sometimes there is a considerable mismatch between patient renal outcome and pathological findings in renal biopsy. This is the time to address some new diagnostic methods to resolve the insufficiency of conventional percutaneous guided renal biopsy. Nanotechnology is still in its infancy in renal imaging; however, it seems that it is the next step in renal biopsy, providing solutions to the limitations of conventional modalities.
Collapse
Affiliation(s)
| | - Behzad Abedi
- Medical Bioengineering Department, School of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sabalan Daneshvar
- Medical Bioengineering Department, School of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
- Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran
| | - Yashar Sarbaz
- School of Engineering-Emerging Technologies, University of Tabriz, Tabriz, Iran
| | | |
Collapse
|
9
|
Lam T, Avti PK, Pouliot P, Tardif JC, Rhéaume É, Lesage F, Kakkar A. Magnetic resonance imaging/fluorescence dual modality protocol using designed phosphonate ligands coupled to superparamagnetic iron oxide nanoparticles. J Mater Chem B 2016; 4:3969-3981. [PMID: 32263096 DOI: 10.1039/c6tb00821f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A simple and versatile methodology to tailor the surface of superparamagnetic iron oxide nanoparticles (SPIONs), and render additional fluorescence capability to these contrast agents, is reported. The dual modality imaging protocol was developed by designing multi-functional scaffolds with a combination of orthogonal moieties for aqueous dispersion and stealth, to covalently link them to SPIONs, and carry out post-functionalization of nanoparticles. SPIONs stabilized with ligands incorporating surface-anchoring phosphonate groups, ethylene glycol backbone for aqueous dispersion, and free surface exposed OH moieties were coupled to near-infrared dye Cy5.5A. Our results demonstrate that design of multi-tasking ligands with desired combination and spatial distribution of functions provides an ideal platform to construct highly efficient dual imaging probes with balanced magnetic, optical and cell viability properties.
Collapse
Affiliation(s)
- Tina Lam
- Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, Quebec H3A 0B8, Canada.
| | | | | | | | | | | | | |
Collapse
|
10
|
Wu Q, Cheng Q, Yuan S, Qian J, Zhong K, Qian Y, Liu Y. A cell-penetrating protein designed for bimodal fluorescence and magnetic resonance imaging. Chem Sci 2015; 6:6607-6613. [PMID: 28757964 PMCID: PMC5506616 DOI: 10.1039/c5sc01925g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 08/11/2015] [Indexed: 01/17/2023] Open
Abstract
Multimodal imaging is a highly desirable biomedical application since it can provide complementary information from each imaging modality. We propose a protein engineering-based strategy for the construction of a bimodal probe for fluorescence and magnetic resonance imaging. A recombinant protein was generated by the fusion of a supercharged green fluorescence protein (GFP36+) with a lanthanide-binding tag (dLBT) that can stably bind two Gd3+ ions. The GFP36+-dLBT fusion protein showed strong fluorescence and exhibited efficient contrast enhancement in magnetic resonance imaging. This protein probe improves the MR relaxation more efficiently than Gd-DTPA (gadopentetate dimeglumine). The superior cell-penetrating activity of GFP36+ allows the efficient cellular uptake of this fusion protein and it can thus be used as a cellular imaging probe. Dual imaging was conducted in vitro and in mice. This result indicates that the fusion of different functional domains is a feasible approach for making multi-modal imaging agents.
Collapse
Affiliation(s)
- Qin Wu
- CAS Key Laboratory of Soft Matter Chemistry , CAS , High Magnetic Field Laboratory , Department of Chemistry , University of Science and Technology of China , Hefei , 230026 , Anhui , China .
| | - Qinqin Cheng
- CAS Key Laboratory of Soft Matter Chemistry , CAS , High Magnetic Field Laboratory , Department of Chemistry , University of Science and Technology of China , Hefei , 230026 , Anhui , China .
| | - Siming Yuan
- CAS Key Laboratory of Soft Matter Chemistry , CAS , High Magnetic Field Laboratory , Department of Chemistry , University of Science and Technology of China , Hefei , 230026 , Anhui , China .
| | - Junchao Qian
- High Magnetic Field Laboratory , Chinese Academy of Sciences , Hefei , 230031 , China
| | - Kai Zhong
- High Magnetic Field Laboratory , Chinese Academy of Sciences , Hefei , 230031 , China
| | - Yinfeng Qian
- Radiology Department , the First Affiliated Hospital of Anhui Medical University , Hefei , 230022 , China
| | - Yangzhong Liu
- CAS Key Laboratory of Soft Matter Chemistry , CAS , High Magnetic Field Laboratory , Department of Chemistry , University of Science and Technology of China , Hefei , 230026 , Anhui , China .
| |
Collapse
|
11
|
Domey J, Bergemann C, Bremer-Streck S, Krumbein I, Reichenbach JR, Teichgräber U, Hilger I. Long-term prevalence of NIRF-labeled magnetic nanoparticles for the diagnostic and intraoperative imaging of inflammation. Nanotoxicology 2015; 10:20-31. [PMID: 25686713 PMCID: PMC4819594 DOI: 10.3109/17435390.2014.1000413] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Inflammation is a very common disease worldwide. In severe cases, surgery is often the method of choice. Today, there is a general need for the implementation of image-based guidance methodologies for reliable target resection. We investigated new near infrared fluorescence (NIRF)-nanoparticles (NPs) as a simple but effective bimodal magnetic resonance imaging (MRI) and optical contrast agent for diagnosis and intraoperative imaging of inflammation. Physicochemical analysis revealed that these NPs were highly fluorescent with similar characteristics like unlabeled NPs (hydrodynamic diameter about 130 nm and zeta potential about −10 mV). NP-uptake and NIR-dye labeling was biocompatible to macrophages (no impact on cellular ATP and reactive oxygen species production). These cells could successfully be tracked with MRI and NIRF-optical imaging. I.v. injection of fluorescent NPs into mice led to highly specific T2-weighted signal of edema due to uptake by phagocytic cells and subsequent migration to the site of inflammation. NIRF signals of the edema region were well detectable for up to 4 weeks, underlining the potential of the NPs for systematic planning and flexible time scheduling in intraoperative applications. NPs were degraded over a time period of 12 weeks, which was not altered due to inflammation. Redistribution of iron might be primarily due to inflammation and not to the presence of NPs per se in a concentration suitable for imaging. Our findings highlight the potential of the NPs to be used as a suitable tool for pre- and intraoperative imaging of inflammation.
Collapse
Affiliation(s)
- Jenny Domey
- a Department of Experimental Radiology , Institute of Diagnostic and Interventional Radiology, Jena University Hospital - Friedrich Schiller University Jena , Jena , Germany
| | | | - Sibylle Bremer-Streck
- c Institute of Clinical Chemistry and Laboratory Diagnostics, Jena University Hospital - Friedrich Schiller University Jena , Jena , Germany , and
| | - Ines Krumbein
- d Medical Physics Group, Institute of Diagnostic and Interventional Radiology, Jena University Hospital - Friedrich Schiller University Jena , Jena , Germany
| | - Jürgen R Reichenbach
- d Medical Physics Group, Institute of Diagnostic and Interventional Radiology, Jena University Hospital - Friedrich Schiller University Jena , Jena , Germany
| | - Ulf Teichgräber
- a Department of Experimental Radiology , Institute of Diagnostic and Interventional Radiology, Jena University Hospital - Friedrich Schiller University Jena , Jena , Germany
| | - Ingrid Hilger
- a Department of Experimental Radiology , Institute of Diagnostic and Interventional Radiology, Jena University Hospital - Friedrich Schiller University Jena , Jena , Germany
| |
Collapse
|
12
|
Sharma VK, Gokyar S, Kelestemur Y, Erdem T, Unal E, Demir HV. Manganese doped fluorescent paramagnetic nanocrystals for dual-modal imaging. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:4961-4966. [PMID: 25111198 DOI: 10.1002/smll.201401143] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 06/13/2014] [Indexed: 06/03/2023]
Abstract
In this work, dual-modal (fluorescence and magnetic resonance) imaging capabilities of water-soluble, low-toxicity, monodisperse Mn-doped ZnSe nanocrystals (NCs) with a size (6.5 nm) below the optimum kidney cutoff limit (10 nm) are reported. Synthesizing Mn-doped ZnSe NCs with varying Mn(2+) concentrations, a systematic investigation of the optical properties of these NCs by using photoluminescence (PL) and time resolved fluorescence are demonstrated. The elemental properties of these NCs using X-ray photoelectron spectroscopy and inductive coupled plasma-mass spectroscopy confirming Mn(2+) doping is confined to the core of these NCs are also presented. It is observed that with increasing Mn(2+) concentration the PL intensity first increases, reaching a maximum at Mn(2+) concentration of 3.2 at% (achieving a PL quantum yield (QY) of 37%), after which it starts to decrease. Here, this high-efficiency sample is demonstrated for applications in dual-modal imaging. These NCs are further made water-soluble by ligand exchange using 3-mercaptopropionic acid, preserving their PL QY as high as 18%. At the same time, these NCs exhibit high relaxivity (≈2.95 mM(-1) s(-1)) to obtain MR contrast at 25 °C, 3 T. Therefore, the Mn(2+) doping in these water-soluble Cd-free NCs are sufficient to produce contrast for both fluorescence and magnetic resonance imaging techniques.
Collapse
Affiliation(s)
- Vijay Kumar Sharma
- UNAM-Institute of Materials Science and Nanotechnology, Department of Electrical and Electronics Engineering, Department of Physics, Bilkent University, Ankara, 06800, Turkey
| | | | | | | | | | | |
Collapse
|
13
|
Shang L, Nienhaus GU. Gold nanoclusters as novel optical probes for in vitro and in vivo fluorescence imaging. Biophys Rev 2012; 4:313-322. [PMID: 28510207 DOI: 10.1007/s12551-012-0076-9] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Accepted: 03/21/2012] [Indexed: 12/22/2022] Open
Abstract
Fluorescent probes play an important role in the development of fluorescence-based imaging techniques for life sciences research. Gold nanoclusters (AuNCs) are a novel type of fluorescent nanomaterials which have attracted great interest in recent years. Composed of only a few atoms, these ultrasmall AuNCs exhibit quantum confinement effects and molecule-like properties. Fluorescent AuNCs have an attractive set of features including ultrasmall size, good biocompatibility and photostability, and tunable emission in the red to near-infrared spectral region, which make them promising as fluorescent labels for biological imaging. Examples of their application include live cell labeling, cancer cell targeting, cellular apoptosis monitoring, and in vivo tumor imaging. Here, we present a brief overview of recent advances in utilizing these emissive ultrasmall AuNCs as optical probes for in vitro and in vivo fluorescence imaging.
Collapse
Affiliation(s)
- Li Shang
- Institute of Applied Physics and Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), Wolfgang Gaede Strasse 1, 76131, Karlsruhe, Germany
| | - G Ulrich Nienhaus
- Institute of Applied Physics and Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), Wolfgang Gaede Strasse 1, 76131, Karlsruhe, Germany. .,Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, IL, 61801, USA.
| |
Collapse
|
14
|
Colombo M, Carregal-Romero S, Casula MF, Gutiérrez L, Morales MP, Böhm IB, Heverhagen JT, Prosperi D, Parak WJ. Biological applications of magnetic nanoparticles. Chem Soc Rev 2012; 41:4306-34. [PMID: 22481569 DOI: 10.1039/c2cs15337h] [Citation(s) in RCA: 689] [Impact Index Per Article: 57.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this review an overview about biological applications of magnetic colloidal nanoparticles will be given, which comprises their synthesis, characterization, and in vitro and in vivo applications. The potential future role of magnetic nanoparticles compared to other functional nanoparticles will be discussed by highlighting the possibility of integration with other nanostructures and with existing biotechnology as well as by pointing out the specific properties of magnetic colloids. Current limitations in the fabrication process and issues related with the outcome of the particles in the body will be also pointed out in order to address the remaining challenges for an extended application of magnetic nanoparticles in medicine.
Collapse
Affiliation(s)
- Miriam Colombo
- Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Milan, Italy
| | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Liu H, Wang T, Zhang L, Li L, Wang YA, Wang C, Su Z. Selected-Control Fabrication of Multifunctional Fluorescent-Magnetic Core-Shell and Yolk-Shell Hybrid Nanostructures. Chemistry 2012; 18:3745-52. [DOI: 10.1002/chem.201103066] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Indexed: 11/09/2022]
|
16
|
Wang X, He F, Tang F, Ma N, Li L. Preparation of hybrid fluorescent–magnetic nanoparticles for application to cellular imaging by self-assembly. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2011.09.040] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|