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Wu Z, Dai L, Tang K, Ma Y, Song B, Zhang Y, Li J, Lui S, Gong Q, Wu M. Advances in magnetic resonance imaging contrast agents for glioblastoma-targeting theranostics. Regen Biomater 2021; 8:rbab062. [PMID: 34868634 PMCID: PMC8634494 DOI: 10.1093/rb/rbab062] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 10/20/2021] [Accepted: 11/02/2021] [Indexed: 02/07/2023] Open
Abstract
Glioblastoma (GBM) is the most aggressive malignant brain tumour, with a median survival of 3 months without treatment and 15 months with treatment. Early GBM diagnosis can significantly improve patient survival due to early treatment and management procedures. Magnetic resonance imaging (MRI) using contrast agents is the preferred method for the preoperative detection of GBM tumours. However, commercially available clinical contrast agents do not accurately distinguish between GBM, surrounding normal tissue and other cancer types due to their limited ability to cross the blood–brain barrier, their low relaxivity and their potential toxicity. New GBM-specific contrast agents are urgently needed to overcome the limitations of current contrast agents. Recent advances in nanotechnology have produced alternative GBM-targeting contrast agents. The surfaces of nanoparticles (NPs) can be modified with multimodal contrast imaging agents and ligands that can specifically enhance the accumulation of NPs at GBM sites. Using advanced imaging technology, multimodal NP-based contrast agents have been used to obtain accurate GBM diagnoses in addition to an increased amount of clinical diagnostic information. NPs can also serve as drug delivery systems for GBM treatments. This review focuses on the research progress for GBM-targeting MRI contrast agents as well as MRI-guided GBM therapy.
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Affiliation(s)
- Zijun Wu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Lixiong Dai
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325000, China
| | - Ke Tang
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yiqi Ma
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Bin Song
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yanrong Zhang
- Department of Radiology, School of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Jinxing Li
- Department of Radiology, School of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Su Lui
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Min Wu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, China
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Varvaro G, Laureti S, Peddis D, Hassan M, Barucca G, Mengucci P, Gerardino A, Giovine E, Lik O, Nissen D, Albrecht M. Co/Pd-Based synthetic antiferromagnetic thin films on Au/resist underlayers: towards biomedical applications. NANOSCALE 2019; 11:21891-21899. [PMID: 31701115 DOI: 10.1039/c9nr06866j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Thin film stacks consisting of multiple repeats M of synthetic antiferromagnetic (SAF) [Co/Pd]N/Ru/[Co/Pd]N units with perpendicular magnetic anisotropy were explored as potential starting materials to fabricate free-standing micro/nanodisks, which represent a promising candidate system for theranostic applications. The films were directly grown on a sacrificial resist layer spin-coated on SiOx/Si(100) substrates, required for the preparation of free-standing disks after its dissolution. Furthermore, the film stack was sandwiched between two Au layers to allow further bio-functionalization. For M ≤ 5, the samples fulfill all the key criteria mandatory for biomedical applications, i.e., zero remanence, zero field susceptibility at small fields and sharp switching to saturation, together with the ability to vary the total magnetic moment at saturation by changing the number of repetitions of the multi-stack. Moreover, the samples show strong perpendicular magnetic anisotropy, which is required for applications relying on the transduction of a mechanical force through the micro/nano-disks under a magnetic field, such as the mechanical cell disruption, which is nowadays considered a promising alternative to the more investigated magnetic hyperthermia approach for cancer treatment. In a further step, SAF microdisks were prepared from the continuous multi-stacks by combining electron beam lithography and Ar ion milling, revealing similar magnetic properties as compared to the continuous films.
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Affiliation(s)
- G Varvaro
- Istituto di Struttura della Materia, CNR, Via Salaria km 29.300, Monterotondo Scalo, Roma, 00015, Italy.
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Lai J, Wang T, Wang H, Shi F, Gu W, Ye L. MnO nanoparticles with unique excitation-dependent fluorescence for multicolor cellular imaging and MR imaging of brain glioma. Mikrochim Acta 2018; 185:244. [PMID: 29610993 DOI: 10.1007/s00604-018-2779-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 03/19/2018] [Indexed: 12/19/2022]
Abstract
The authors describe MnO nanoparticles (NPs) with unique excitation-dependent fluorescence across the entire visible spectrum. These NPs are shown to be efficient optical nanoprobe for multicolor cellular imaging. Synthesis of the NPs is accomplished by a thermal decomposition method. The MnO NPs exhibit a high r1 relaxivity of 4.68 mM-1 s-1 and therefore give an enhanced contrast effect in magnetic resonance (MR) studies of brain glioma. The cytotoxicity assay, hemolysis analysis, and hematoxylin and eosin (H&E) staining tests verify that the MnO NPs are biocompatible. In the authors' perception, the simultaneous attributes of multicolor fluorescence and excellent MR functionality make this material a promising dual-modal nanoprobe for use in bio-imaging. Graphical abstract A direct method to synthesize fluorescent MnO NPs is reported. The NPs are biocompatible and have been successfully applied for multicolor cellular imaging and MR detection of brain glioma.
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Affiliation(s)
- Junxin Lai
- School of Pharmaceutical Sciences, Capital Medical University, Beijing, 100069, People's Republic of China
| | - Tingjian Wang
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing, 100093, People's Republic of China
| | - Hao Wang
- Department of Anatomy, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, People's Republic of China
| | - Fengqiang Shi
- School of Pharmaceutical Sciences, Capital Medical University, Beijing, 100069, People's Republic of China
| | - Wei Gu
- School of Pharmaceutical Sciences, Capital Medical University, Beijing, 100069, People's Republic of China.
| | - Ling Ye
- School of Pharmaceutical Sciences, Capital Medical University, Beijing, 100069, People's Republic of China.
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4
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Hao XM, Zhao S, Wang H, Wu YB, Yang D, Zhang XF, Xu ZL. In vitro release of theophylline and cytotoxicity of two new metal–drug complexes. Polyhedron 2018. [DOI: 10.1016/j.poly.2017.12.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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5
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Liu K, Shi X, Wang T, Ai P, Gu W, Ye L. Terbium-doped manganese carbonate nanoparticles with intrinsic photoluminescence and magnetic resonance imaging capacity. J Colloid Interface Sci 2017; 485:25-31. [DOI: 10.1016/j.jcis.2016.09.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Revised: 09/05/2016] [Accepted: 09/06/2016] [Indexed: 10/21/2022]
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6
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Davis K, Cole B, Ghelardini M, Powell BA, Mefford OT. Quantitative Measurement of Ligand Exchange with Small-Molecule Ligands on Iron Oxide Nanoparticles via Radioanalytical Techniques. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:13716-13727. [PMID: 27966977 DOI: 10.1021/acs.langmuir.6b03644] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Ligand exchange on the surface of hydrophobic iron oxide nanoparticles is a common method for controlling surface chemistry for a desired application. Furthermore, ligand exchange with small-molecule ligands may be necessary to obtain particles with a specific size or functionality. Understanding to what extent ligand exchange occurs and what factors affect it is important for the optimization of this critical procedure. However, quantifying the amount of exchange may be difficult because of the limitations of commonly used characterization techniques. Therefore, we utilized a radiotracer technique to track the exchange of a radiolabeled 14C-oleic acid ligand with hydrophilic small-molecule ligands on the surface of iron oxide nanoparticles. Iron oxide nanoparticles functionalized with 14C-oleic acid were modified with small-molecule ligands with terminal functional groups including catechols, phosphonates, sulfonates, thiols, carboxylic acids, and silanes. These moieties were selected because they represent the most commonly used ligands for this procedure. The effectiveness of these molecules was compared using both procedures widely found in the literature and using a standardized procedure. After ligand exchange, the nanoparticles were analyzed using liquid scintillation counting (LSC) and inductively coupled plasma-mass spectrometry. The labeled and unlabeled particles were further characterized by transmission electron microscopy (TEM) and dynamic light scattering (DLS) to determine the particle size, hydrodynamic diameter, and zeta potential. The unlabeled particles were characterized via attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) and vibrating sample magnetometry (VSM) to confirm the presence of the small molecules on the particles and verify the magnetic properties, respectively. Radioanalytical determination of 14C-oleic acid was used to calculate the total amount of oleic acid remaining on the surface of the particles after ligand exchange. The results revealed that the ligand-exchange reactions performed using widely cited procedures did not go to completion. Residual oleic acid remained on the particles after these reactions and the reactions using a standardized protocol. A comparison of the ligand-exchange procedures indicated that the binding moiety, multidenticity, reaction time, temperature, and presence of a catalyst impacted the extent of exchange. Quantification of the oleic acid remaining after ligand exchange revealed a binding hierarchy in which catechol-derived anchor groups displace the most oleic acid on the surface of the nanoparticles and the thiol group displaces the least amount of oleic acid. Thorough characterization of ligand exchange is required to develop nanoparticles suitable for their intended application.
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Affiliation(s)
| | - Brian Cole
- Department of Chemistry, Henderson State University , Arkadelphia, Arkansas 71999, United States
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7
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Zhang J, Chen N, Wang H, Gu W, Liu K, Ai P, Yan C, Ye L. Dual-targeting superparamagnetic iron oxide nanoprobes with high and low target density for brain glioma imaging. J Colloid Interface Sci 2016; 469:86-92. [PMID: 26874270 DOI: 10.1016/j.jcis.2016.02.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 01/30/2016] [Accepted: 02/02/2016] [Indexed: 01/08/2023]
Abstract
A major limit of superparamagnetic iron oxide nanoparticles (SPIONs) as a magnetic resonance (MR) imaging nanoprobe in clinical applications is that the SPIONs are unable to reach sufficient concentrations at the tumor site by passive targeting to produce an obvious contrast effect for tumor imaging. Single-targeting SPIONs systems have been applied to improve the contrast effect. However, they still suffer from a lack of efficiency and specificity of the SPIONs to tumors. Herein, we developed folic acid (FA) and cyclic Arg-Gly-Asp-D-Tyr-Lys (c(RGDyK)) dual-targeting nanoprobes based on Cy5.5 labeled Fe3O4 nanoparticles (NPs). The synergistic targeting ability of the dual-targeting Fe3O4 NPs and the effect of the dual-target density on targeting specificity were investigated in brain glioma-bearing mice. In vivo T2-weighted MR imaging of brain glioma-bearing mice and ex vivo near-infrared imaging of brains harboring gliomas suggested that the combination of dual-target increased the uptake of NPs by glioma, consequently, enhanced the contrast effect. Moreover, it was revealed that the density of dual-target plays an important role in targeting specificity.
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Affiliation(s)
- Juan Zhang
- School of Chemical Biology and Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China
| | - Ning Chen
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, PR China
| | - Hao Wang
- Department of Anatomy, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, PR China
| | - Wei Gu
- School of Chemical Biology and Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China
| | - Kang Liu
- School of Chemical Biology and Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China
| | - Penghui Ai
- Department of Neurosurgery, Beijing Sanbo Brain Hospital, Capital Medical University, Beijing 100093, PR China
| | - Changxiang Yan
- Department of Neurosurgery, Beijing Sanbo Brain Hospital, Capital Medical University, Beijing 100093, PR China.
| | - Ling Ye
- School of Chemical Biology and Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China.
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8
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Chen N, Shao C, Li S, Wang Z, Qu Y, Gu W, Yu C, Ye L. Cy5.5 conjugated MnO nanoparticles for magnetic resonance/near-infrared fluorescence dual-modal imaging of brain gliomas. J Colloid Interface Sci 2015; 457:27-34. [DOI: 10.1016/j.jcis.2015.06.046] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 06/28/2015] [Accepted: 06/29/2015] [Indexed: 10/23/2022]
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9
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Shao C, Li S, Gu W, Gong N, Zhang J, Chen N, Shi X, Ye L. Multifunctional Gadolinium-Doped Manganese Carbonate Nanoparticles for Targeted MR/Fluorescence Imaging of Tiny Brain Gliomas. Anal Chem 2015; 87:6251-7. [DOI: 10.1021/acs.analchem.5b01639] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chen Shao
- School
of Chemical Biology and Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P. R. China
| | - Shuai Li
- School
of Chemical Biology and Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P. R. China
| | - Wei Gu
- School
of Chemical Biology and Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P. R. China
| | - Ningqiang Gong
- School
of Traditional Chinese Medicine, Capital Medical University, Beijing 100069, P. R. China
| | - Juan Zhang
- School
of Chemical Biology and Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P. R. China
| | - Ning Chen
- Department
of Neurosurgery, Beijing Sanbo Brain Hospital, Capital Medical University, Beijing 100093, P. R. China
| | - Xiangyang Shi
- College
of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 210620, P. R. China
| | - Ling Ye
- School
of Chemical Biology and Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P. R. China
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10
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Li S, Shao C, Gu W, Wang R, Zhang J, Lai J, Li H, Ye L. Targeted imaging of brain gliomas using multifunctional Fe3O4/MnO nanoparticles. RSC Adv 2015. [DOI: 10.1039/c5ra01069a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The CTX-conjugated Fe3O4/MnO hybrid nanoparticles were synthesized and their feasibility for targeted dual-modality T1–T2 MR imaging of brain gliomas was demonstrated.
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Affiliation(s)
- Shuai Li
- School of Chemical Biology and Pharmaceutical Sciences
- Capital Medical University
- Beijing
- P. R. China
| | - Chen Shao
- School of Chemical Biology and Pharmaceutical Sciences
- Capital Medical University
- Beijing
- P. R. China
| | - Wei Gu
- School of Chemical Biology and Pharmaceutical Sciences
- Capital Medical University
- Beijing
- P. R. China
| | - Rui Wang
- School of Traditional Chinese Medicine
- Capital Medical University
- Beijing
- P. R. China
| | - Juan Zhang
- School of Chemical Biology and Pharmaceutical Sciences
- Capital Medical University
- Beijing
- P. R. China
| | - Junxin Lai
- School of Chemical Biology and Pharmaceutical Sciences
- Capital Medical University
- Beijing
- P. R. China
| | - Hansheng Li
- School of Chemical Engineering and the Environment
- Beijing Institute of Technology
- Beijing
- P. R. China
| | - Ling Ye
- School of Chemical Biology and Pharmaceutical Sciences
- Capital Medical University
- Beijing
- P. R. China
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11
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Kumar S, Daverey A, Khalilzad-Sharghi V, Sahu NK, Kidambi S, Othman SF, Bahadur D. Theranostic fluorescent silica encapsulated magnetic nanoassemblies for in vitro MRI imaging and hyperthermia. RSC Adv 2015. [DOI: 10.1039/c5ra07632c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This article reports the synthesis of manganese ferrite nano-assemblies (MNAs) encapsulated with fluorescent silica and demonstrates their applicability for magnetic hyperthermia, optical and T2 contrast MRI imaging with HeLa cancer cells.
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Affiliation(s)
- Sunil Kumar
- Department of Chemical Engineering
- Indian Institute of Technology
- Mumbai-400076
- India
| | - Amita Daverey
- Department of Metallurgical Engineering and Materials Science
- Indian Institute of Technology
- Mumbai-400076
- India
- Department of Chemical and Bimolecular Engineering
| | | | - Niroj K. Sahu
- Department of Metallurgical Engineering and Materials Science
- Indian Institute of Technology
- Mumbai-400076
- India
| | - Srivatsan Kidambi
- Department of Chemical and Bimolecular Engineering
- University of Nebraska
- Lincoln
- USA
| | - Shadi F. Othman
- Department of Biological Systems Engineering
- University of Nebraska
- Lincoln
- USA
| | - Dhirendra Bahadur
- Department of Metallurgical Engineering and Materials Science
- Indian Institute of Technology
- Mumbai-400076
- India
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12
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Vamvakidis K, Katsikini M, Vourlias G, Angelakeris M, Paloura EC, Dendrinou-Samara C. Composition and hydrophilicity control of Mn-doped ferrite (MnxFe3−xO4) nanoparticles induced by polyol differentiation. Dalton Trans 2015; 44:5396-406. [DOI: 10.1039/c5dt00212e] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrophilic Mn-doped ferrite nanoparticles (MnxFe3−xO4, x = 0.29–0.77) stabilized by PEG8000, PG and TEG & PG.
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Affiliation(s)
- Kosmas Vamvakidis
- Department of Chemistry
- Aristotle University of Thessaloniki
- 54124 Thessaloniki
- Greece
| | - Maria Katsikini
- Department of Physics
- Aristotle University of Thessaloniki
- 54124 Thessaloniki
- Greece
| | - George Vourlias
- Department of Physics
- Aristotle University of Thessaloniki
- 54124 Thessaloniki
- Greece
| | | | - Eleni C. Paloura
- Department of Physics
- Aristotle University of Thessaloniki
- 54124 Thessaloniki
- Greece
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13
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Chen N, Shao C, Qu Y, Li S, Gu W, Zheng T, Ye L, Yu C. Folic acid-conjugated MnO nanoparticles as a T1 contrast agent for magnetic resonance imaging of tiny brain gliomas. ACS APPLIED MATERIALS & INTERFACES 2014; 6:19850-7. [PMID: 25335117 DOI: 10.1021/am505223t] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Detection of brain gliomas at the earliest stage is of great importance to improve outcomes, but it remains a most challenging task. In this study, oleic acid capped manganese oxide (MnO) nanoparticles (NPs) were prepared by the thermal decomposition of manganese oleate precursors and then transformed to water-dispersible MnO NPs by replacing oleic acid with N-(trimethoxysilylpropyl) ethylene diamine triacetic acid (TETT) silane. The covalently bonded TETT silane offers MnO NPs colloidal stability and abundant carboxylic functional groups allowing the further conjugation of the glioma-specific moiety, folic acid (FA). Moreover, the thin layer of TETT silane ensures a short distance between external Mn ion and water proton, which endows the FA-conjugated, TETT modified MnO (MnO-TETT-FA) NPs a longitudinal relaxivity as high as 4.83 mM(-1) s(-1). Accordingly, the in vivo magnetic resonance (MR) images demonstrated that MnO-TETT-FA NPs could efficiently enhance the MRI contrast for tiny brain gliomas. More importantly, due to the specificity of FA, MnO-TETT-FA NPs led to a clearer margin of the tiny glioma. This together with the good biocompatibility discloses the great potential of MnO-TETT-FA NPs as effective MRI contrast agents for the early diagnosis of brain gliomas.
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Affiliation(s)
- Ning Chen
- Department of Neurosurgery, Beijing Sanbo Brain Hospital, Capital Medical University , Beijing 100093, P. R. China
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14
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Gu W, Song G, Li S, Shao C, Yan C, Ye L. Chlorotoxin-conjugated, PEGylated Gd2O3nanoparticles as a glioma-specific magnetic resonance imaging contrast agent. RSC Adv 2014. [DOI: 10.1039/c4ra10934a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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15
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Van Roosbroeck R, Van Roy W, Stakenborg T, Trekker J, D'Hollander A, Dresselaers T, Himmelreich U, Lammertyn J, Lagae L. Synthetic antiferromagnetic nanoparticles as potential contrast agents in MRI. ACS NANO 2014; 8:2269-2278. [PMID: 24483137 DOI: 10.1021/nn406158h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We present the top-down synthesis of a novel type of MRI T2 contrast agent with great control over size and shape using a colloidal lithography technique. The resulting synthetic antiferromagnetic nanoparticles (SAF-NPs) yield improved relaxivities compared to superparamagnetic iron oxide alternatives (SPIONs). For T2 weighted imaging, the outer sphere relaxation theory has shown that the sensitivity of a T2 contrast agent is dependent on the particle size with an optimal size that exceeds the superparamagnetic limit of SPIONs. With the use of the interlayer exchange coupling effect, the SAF-NPs presented here do not suffer from this limit. Adjusting the outer sphere relaxation theory for spherical particles to SAF-NPs, we show both theoretically and experimentally that the SAF-NP size can be optimized to reach the r2 maximum. With measured r2 values up to 355 s(-1) mM(-1), our SAF-NPs show better performance than commercial alternatives and are competitive with the state-of-the-art. This performance is confirmed in an in vitro MRI study on SKOV3 cells.
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16
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Deng Y, Wang H, Gu W, Li S, Xiao N, Shao C, Xu Q, Ye L. Ho3+ doped NaGdF4 nanoparticles as MRI/optical probes for brain glioma imaging. J Mater Chem B 2014; 2:1521-1529. [DOI: 10.1039/c3tb21613f] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
CTX-conjugated doped NaGdF4 (CTX-NaGdF4:Ho3+) NPs were prepared by a thermal decomposition method followed by ligand-exchange with TETT silane and CTX conjugation. The potential of these NPs as dual-modal nanoprobes in tiny glioma imaging was demonstrated.
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Affiliation(s)
- Yunlong Deng
- School of Chemical Biology and Pharmaceutical Sciences
- Capital Medical University
- Beijing, P. R. China
| | - Hao Wang
- Regeneration and Repair
- Key Laboratory for Neurodegenerative Disease of The Ministry of Education
- Capital Medical University
- Beijing, P. R. China
| | - Wei Gu
- School of Chemical Biology and Pharmaceutical Sciences
- Capital Medical University
- Beijing, P. R. China
| | - Shuai Li
- School of Chemical Biology and Pharmaceutical Sciences
- Capital Medical University
- Beijing, P. R. China
| | - Ning Xiao
- School of Chemical Biology and Pharmaceutical Sciences
- Capital Medical University
- Beijing, P. R. China
| | - Chen Shao
- School of Chemical Biology and Pharmaceutical Sciences
- Capital Medical University
- Beijing, P. R. China
| | - Qunyuan Xu
- Regeneration and Repair
- Key Laboratory for Neurodegenerative Disease of The Ministry of Education
- Capital Medical University
- Beijing, P. R. China
| | - Ling Ye
- School of Chemical Biology and Pharmaceutical Sciences
- Capital Medical University
- Beijing, P. R. China
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17
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Xiao N, Gu W, Wang H, Deng Y, Shi X, Ye L. T1-T2 dual-modal MRI of brain gliomas using PEGylated Gd-doped iron oxide nanoparticles. J Colloid Interface Sci 2013; 417:159-65. [PMID: 24407672 DOI: 10.1016/j.jcis.2013.11.020] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 11/08/2013] [Accepted: 11/09/2013] [Indexed: 12/13/2022]
Abstract
To overcome the negative contrast limitations of iron oxide-based contrast agents and to improve the biocompatibility of Gd-chelate contrast agents, PEGylated Gd-doped iron oxide (PEG-GdIO) NPs as a T1-T2 dual-modal contrast agent were synthesized by the polyol method. The transverse relaxivity (r2) and longitudinal relaxivity (r1) of PEG-GdIO were determined to be 66.9 and 65.9 mM(-1) s(-1), respectively. The high r1 value and low r2/r1 ratio make PEG-GdIO NPs suitable as a T1-T2 dual-modal contrast agent. The in vivo MRI demonstrated a brighter contrast enhancement in T1-weighted image and a simultaneous darken effect in T2-weighted MR image compared to the pre-contrast image in the region of glioma. Furthermore, the biocompatibility of PEG-GdIO NPs was confirmed by the in vitro MTT cytotoxicity and in vivo histological analyses (H&E). Therefore, PEG-GdIO NPs hold great potential in T1-T2 dual-modal imaging for the diagnosis of brain glioma.
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Affiliation(s)
- Ning Xiao
- School of Chemical Biology and Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China
| | - Wei Gu
- School of Chemical Biology and Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China
| | - Hao Wang
- Regeneration and Repair, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Capital Medical University, Beijing 100069, PR China
| | - Yunlong Deng
- School of Chemical Biology and Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China
| | - Xin Shi
- School of Traditional Chinese Medicine, Capital Medical University, Beijing 100069, PR China
| | - Ling Ye
- School of Chemical Biology and Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China.
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Wang H, Hu TL, Wen RM, Wang Q, Bu XH. In vitro controlled release of theophylline from metal–drug complexes. J Mater Chem B 2013; 1:3879-3882. [DOI: 10.1039/c3tb20633e] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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