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Zhou M, Li L, Xie W, He Z, Li J. Synthesis of a Thermal-Responsive Dual-Modal Supramolecular Probe for Magnetic Resonance Imaging and Fluorescence Imaging. Macromol Rapid Commun 2021; 42:e2100248. [PMID: 34272782 DOI: 10.1002/marc.202100248] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/06/2021] [Indexed: 11/05/2022]
Abstract
Dual-modal imaging can integrate the advantages of different imaging technologies, which could improve the accuracy and efficiency of clinical diagnosis. Herein, a novel amphiphilic thermal-responsive copolymer obtained from three types of monomers, N-isopropyl acrylamide, 2-(acetoacetoxy) ethyl methacrylate, and propargyl methacrylate, by RAFT copolymerization, is reported. It can be grafted with β-cyclodextrin and aggregation-induced emission (AIE) luminogens tetraphenylethylene by click chemistry and Biginelli reaction. The multifunctional supramolecular polymer (P4) can be constructed by host-guest inclusion between the copolymer and the Gd-based contrast agent (CA) modified by adamantane [Ad-(DOTA-Gd)]. And it can form vesicles with a bilayer structure in aqueous which will enhance the AIE and magnetic resonance imaging effects. As fluorescent thermometer, P4 can enter HeLa cells for intracellular fluorescence imaging (FI) and is sensitive to temperature with detection limit value of 1.5 °C. As magnetic resonance CA, P4 exhibits higher relaxation compared to Magnevist, which can prolong the circulation time in vivo. In addition, Gd3+ in the polymer can be quickly released from the body by disassembly that reduced the biological toxicity. This work introduces new synthetic ideas for dual-modal probe, which has great potential for clinical diagnostic applications in bioimaging.
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Affiliation(s)
- Mi Zhou
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, 310014, China
| | - Li Li
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, 310014, China
| | - Wensheng Xie
- The Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Zejian He
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, 310014, China
| | - Jie Li
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, 310014, China
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2
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Yang CT, Hattiholi A, Selvan ST, Yan SX, Fang WW, Chandrasekharan P, Koteswaraiah P, Herold CJ, Gulyás B, Aw SE, He T, Ng DCE, Padmanabhan P. Gadolinium-based bimodal probes to enhance T1-Weighted magnetic resonance/optical imaging. Acta Biomater 2020; 110:15-36. [PMID: 32335310 DOI: 10.1016/j.actbio.2020.03.047] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 03/30/2020] [Accepted: 03/31/2020] [Indexed: 12/29/2022]
Abstract
Gd3+-based contrast agents have been extensively used for signal enhancement of T1-weighted magnetic resonance imaging (MRI) due to the large magnetic moment and long electron spin relaxation time of the paramagnetic Gd3+ ion. The key requisites for the development of Gd3+-based contrast agents are their relaxivities and stabilities which can be achieved by chemical modifications. These modifications include coordinating Gd3+ with a chelator such as diethylenetriamine pentaacetic acid (DTPA) or 1,4,7,10-Tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA), encapsulating Gd3+ in nanoparticles, conjugation to biomacromolecules such as polymer micelles and liposomes, or non-covalent binding to plasma proteins. In order to have a coherent diagnostic and therapeutic approach and to understand diseases better, the combination of MRI and optical imaging (OI) techniques into one technique entity has been developed to overcome the conventional boundaries of either imaging modality used alone through bringing the excellent spatial resolution of MRI and high sensitivity of OI into full play. Novel MRI and OI bimodal probes have been extensively studied in this regard. This review is an attempt to shed some light on the bimodal imaging probes by summarizing all recent noteworthy publications involving Gd3+ containing MR-optical imaging probes. The several key elements such as novel synthetic strategy, high sensitivity, biocompatibility, and targeting of the probes are highlighted in the review. STATEMENT OF SIGNIFICANCE: The present article aims at giving an overview of the existing bimodal MRI and OI imaging probes. The review structured as a series of examples of paramagnetic Gd3+ ions, either as ions in the crystalline structure of inorganic materials or chelates for contrast enhancement in MRI, while they are used as optical imaging probes in different modes. The comprehensive review focusing on the synthetic strategies, characterizations and properties of these bimodal imaging probes will be helpful in a way to prepare related work.
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Affiliation(s)
- Chang-Tong Yang
- Department of Nuclear Medicine and Molecular Imaging, Radiological Sciences Division, Singapore General Hospital, Outram Road, 169608, Singapore; Duke-NUS Medical School, 8 College Road, 169857, Singapore.
| | - Aishwarya Hattiholi
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, 59 Nanyang Drive, 636921, Singapore; School of Biological Sciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
| | - Subramanian Tamil Selvan
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, 59 Nanyang Drive, 636921, Singapore
| | - Sean Xuexian Yan
- Department of Nuclear Medicine and Molecular Imaging, Radiological Sciences Division, Singapore General Hospital, Outram Road, 169608, Singapore; Duke-NUS Medical School, 8 College Road, 169857, Singapore
| | - Wei-Wei Fang
- School of Chemistry and Chemical Engineering, HeFei University of Technology, HeFei, AnHui 230009, PR China
| | | | - Podili Koteswaraiah
- School of Biological Sciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
| | - Christian J Herold
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna General Hospital, Austria
| | - Balázs Gulyás
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, 59 Nanyang Drive, 636921, Singapore; Karolinska Institutet, Department of Clinical Neuroscience, S-171 76, Stockholm, Sweden
| | - Swee Eng Aw
- Department of Nuclear Medicine and Molecular Imaging, Radiological Sciences Division, Singapore General Hospital, Outram Road, 169608, Singapore
| | - Tao He
- School of Chemistry and Chemical Engineering, HeFei University of Technology, HeFei, AnHui 230009, PR China
| | - David Chee Eng Ng
- Department of Nuclear Medicine and Molecular Imaging, Radiological Sciences Division, Singapore General Hospital, Outram Road, 169608, Singapore; Duke-NUS Medical School, 8 College Road, 169857, Singapore
| | - Parasuraman Padmanabhan
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, 59 Nanyang Drive, 636921, Singapore
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Kavand A, Anton N, Vandamme T, Serra CA, Chan-Seng D. Synthesis and functionalization of hyperbranched polymers for targeted drug delivery. J Control Release 2020; 321:285-311. [DOI: 10.1016/j.jconrel.2020.02.019] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/10/2020] [Accepted: 02/10/2020] [Indexed: 02/07/2023]
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4
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Svechkarev D, Kyrychenko A, Payne WM, Mohs AM. Development of colloidally stable carbazole-based fluorescent nanoaggregates. J Photochem Photobiol A Chem 2018; 352:55-64. [PMID: 29430162 PMCID: PMC5802425 DOI: 10.1016/j.jphotochem.2017.10.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Fluorescent nanomaterials require high colloidal stability for effective use in imaging and sensing applications. We herein report the synthesis of carbazole-based organic fluorescent nanoaggregates, and demonstrate the superior colloidal stability of alkyl-substituted dye aggregates over their non-alkylated analogs. The role of alkyl chains in self-assembly and stability of such nanoaggregates is discussed based on both experimental and molecular dynamics simulation data, and spectral characteristics of the precursor dyes and their aggregates are described. The obtained results provide new insights on development of colloidally stable organic fluorescent nanomaterials with low polydispersity.
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Affiliation(s)
- Denis Svechkarev
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, 986858 Nebraska Medical Center, Omaha, NE 68198-6858, United States
| | - Alexander Kyrychenko
- Institute for Chemistry, V. N. Karazin Kharkiv National University, 4 Svobody Square, 61022 Kharkiv, Ukraine
| | - William M. Payne
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, 986858 Nebraska Medical Center, Omaha, NE 68198-6858, United States
| | - Aaron M. Mohs
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, 986858 Nebraska Medical Center, Omaha, NE 68198-6858, United States
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, 986858 Nebraska Medical Center, Omaha, NE 68198-6858, United States
- Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, 986858 Nebraska Medical Center, Omaha, NE 68198-6858, United States
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5
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Lei L, Ma H, Qin Y, Yang M, Ma Y, Wang T, Yang Y, Lei Z, Lu D, Guan X. AIE-active florescent polymers: The design, synthesis and the cell imaging application. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.11.030] [Citation(s) in RCA: 9] [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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6
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Zhang P, Zhang Z, Jiang X, Rui L, Gao Y, Zhang W. Unimolecular micelles from POSS-based star-shaped block copolymers for photodynamic therapy. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.04.063] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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7
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Zhang L, Liu R, Peng H, Li P, Xu Z, Whittaker AK. The evolution of gadolinium based contrast agents: from single-modality to multi-modality. NANOSCALE 2016; 8:10491-10510. [PMID: 27159645 DOI: 10.1039/c6nr00267f] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Gadolinium-based contrast agents are extensively used as magnetic resonance imaging (MRI) contrast agents due to their outstanding signal enhancement and ease of chemical modification. However, it is increasingly recognized that information obtained from single modal molecular imaging cannot satisfy the higher requirements on the efficiency and accuracy for clinical diagnosis and medical research, due to its limitation and default rooted in single molecular imaging technique itself. To compensate for the deficiencies of single function magnetic resonance imaging contrast agents, the combination of multi-modality imaging has turned to be the research hotpot in recent years. This review presents an overview on the recent developments of the functionalization of gadolinium-based contrast agents, and their application in biomedicine applications.
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Affiliation(s)
- Li Zhang
- Hubei Collaborative Innovation Center for Advance Organic Chemical Materials, Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, Hubei 430062, China.
| | - Ruiqing Liu
- Hubei Collaborative Innovation Center for Advance Organic Chemical Materials, Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, Hubei 430062, China.
| | - Hui Peng
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia 4072, Australia.
| | - Penghui Li
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Zushun Xu
- Hubei Collaborative Innovation Center for Advance Organic Chemical Materials, Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, Hubei 430062, China.
| | - Andrew K Whittaker
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia 4072, Australia.
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8
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Zu G, Liu M, Zhang K, Hong S, Dong J, Cao Y, Jiang B, Luo L, Pei R. Functional Hyperbranched Polylysine as Potential Contrast Agent Probes for Magnetic Resonance Imaging. Biomacromolecules 2016; 17:2302-8. [PMID: 27187578 DOI: 10.1021/acs.biomac.6b00605] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Researchers have never stopped questing contrast agents with high resolution and safety to overcome the drawbacks of small-molecule contrast agents in clinic. Herein, we reported the synthesis of gadolinium-based hyperbranched polylysine (HBPLL-DTPA-Gd), which was prepared by thermal polymerization of l-lysine via one-step polycondensation. After conjugating with folic acid, its potential application as MRI contrast agent was then evaluated. This contrast agent had no obvious cytotoxicity as verified by WST assay and H&E analysis. Compared to Gd(III)-diethylenetriaminepentaacetic acid (Gd-DTPA) (r1 = 4.3 mM(-1) s(-1)), the FA-HBPLL-DTPA-Gd exhibited much higher longitudinal relaxivity value (r1 = 13.44 mM(-1) s(-1)), up to 3 times higher than Gd-DTPA. The FA-HBPLL-DTPA-Gd showed significant signal intensity enhancement in the tumor region at various time points and provided a long time window for MR examination. The results illustrate that FA-HBPLL-DTPA-Gd will be a potential candidate for tumor-targeted MRI.
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Affiliation(s)
- Guangyue Zu
- Department of Chemistry, College of Sciences, Shanghai University , Shanghai 200444, China.,Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Min Liu
- Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Kunchi Zhang
- Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Shanni Hong
- Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Jingjin Dong
- Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Yi Cao
- Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Bin Jiang
- Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Liqiang Luo
- Department of Chemistry, College of Sciences, Shanghai University , Shanghai 200444, China
| | - Renjun Pei
- Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
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9
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Wang K, Peng H, Thurecht KJ, Whittaker AK. Fluorinated POSS‐Star Polymers for
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F MRI. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600084] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Kewei Wang
- Australian Institute for Bioengineering and Nanotechnology and Centre for Advanced Imaging The University of Queensland St. Lucia Queensland 4072 Australia
| | - Hui Peng
- Australian Institute for Bioengineering and Nanotechnology and Centre for Advanced Imaging The University of Queensland St. Lucia Queensland 4072 Australia
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology The University of Queensland St. Lucia Queensland 4072 Australia
| | - Kristofer J. Thurecht
- Australian Institute for Bioengineering and Nanotechnology and Centre for Advanced Imaging The University of Queensland St. Lucia Queensland 4072 Australia
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology The University of Queensland St. Lucia Queensland 4072 Australia
| | - Andrew K. Whittaker
- Australian Institute for Bioengineering and Nanotechnology and Centre for Advanced Imaging The University of Queensland St. Lucia Queensland 4072 Australia
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology The University of Queensland St. Lucia Queensland 4072 Australia
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10
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Yang CT, Padmanabhan P, Gulyás BZ. Gadolinium(iii) based nanoparticles for T1-weighted magnetic resonance imaging probes. RSC Adv 2016. [DOI: 10.1039/c6ra07782j] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This review summarized the recent progress on Gd(iii)-based nanoparticles asT1-weighted MRI contrast agents and multimodal contrast agents.
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Affiliation(s)
- Chang-Tong Yang
- Lee Kong Chian School of Medicine
- Nanyang Technological University
- Singapore 636921
| | | | - Balázs Z. Gulyás
- Lee Kong Chian School of Medicine
- Nanyang Technological University
- Singapore 636921
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11
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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.
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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 .
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12
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Ge X, Dong L, Sun L, Song Z, Wei R, Shi L, Chen H. New nanoplatforms based on UCNPs linking with polyhedral oligomeric silsesquioxane (POSS) for multimodal bioimaging. NANOSCALE 2015; 7:7206-7215. [PMID: 25811398 DOI: 10.1039/c5nr00950b] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A new and facile method was used to transfer upconversion luminescent nanoparticles from hydrophobic to hydrophilic using polyhedral oligomeric silsesquioxane (POSS) linking on the surface of upconversion nanoparticles. In comparison with the unmodified upconversion nanoparticles, the POSS modified upconversion nanoplatforms [POSS-UCNPs(Er), POSS-UCNPs(Tm)] displayed good monodispersion in water and exhibited good water-solubility, while their particle size did not change substantially. Due to the low cytotoxicity and good biocompatibility as determined by methyl thiazolyl tetrazolium (MTT) assay and histology and hematology analysis, the POSS modified upconversion nanoplatforms were successfully applied to upconversion luminescence imaging of living cells in vitro and nude mouse in vivo (upon excitation at 980 nm). In addition, the doped Gd(3+) ion endows the POSS-UCNPs with effective T1 signal enhancement and the POSS-UCNPs were successfully applied to in vivo magnetic resonance imaging (MRI) for a Kunming mouse, which makes them potential MRI positive-contrast agents. More importantly, the corner organic groups of POSS can be easily modified, resulting in kinds of POSS-UCNPs with many potential applications. Therefore, the method and results may provide more exciting opportunities for multimodal bioimaging and multifunctional applications.
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Affiliation(s)
- Xiaoqian Ge
- Research Center of Nano Science and Technology, Shanghai University, Shanghai 200444, P. R. China.
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13
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Geng J, Sun C, Liu J, Liao LD, Yuan Y, Thakor N, Wang J, Liu B. Biocompatible conjugated polymer nanoparticles for efficient photothermal tumor therapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:1603-1610. [PMID: 25367500 DOI: 10.1002/smll.201402092] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Indexed: 05/29/2023]
Abstract
Conjugated polymers (CPs) with strong near-infrared (NIR) absorption and high heat conversion efficiency have emerged as a new generation of photothermal therapy (PTT) agents for cancer therapy. An efficient strategy to design NIR absorbing CPs with good water dispersibility is essential to achieve excellent therapeutic effect. In this work, poly[9,9-bis(4-(2-ethylhexyl)phenyl)fluorene-alt-co-6,7-bis(4-(hexyloxy)phenyl)-4,9-di(thiophen-2-yl)-thiadiazoloquinoxaline] (PFTTQ) is synthesized through the combination of donor-acceptor moieties by Suzuki polymerization. PFTTQ nanoparticles (NPs) are fabricated through a precipitation approach using 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[methoxy(polyethylene glycol)-2000] (DSPE-PEG2000 ) as the encapsulation matrix. Due to the large NIR absorption coefficient (3.6 L g(-1) cm(-1) ), the temperature of PFTTQ NP suspension (0.5 mg/mL) could be rapidly increased to more than 50 °C upon continuous 808 nm laser irradiation (0.75 W/cm(2) ) for 5 min. The PFTTQ NPs show good biocompatibility to both MDA-MB-231 cells and Hela cells at 400 μg/mL of NPs, while upon laser irradiation, effective cancer cell killing is observed at a NP concentration of 50 μg/mL. Moreover, PFTTQ NPs could efficiently ablate tumor in in vivo study using a Hela tumor mouse model. Considering the large amount of NIR absorbing CPs available, the general encapsulation strategy will enable the development of more efficient PTT agents for cancer or tumor therapy.
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Affiliation(s)
- Junlong Geng
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585
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14
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Synthesis of Water-Soluble Iridium (III)-Containing Nanoparticles for Biological Applications. J CHEM-NY 2015. [DOI: 10.1155/2015/475602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Water-soluble nanoparticles (Ir/PGlc-NP, Ir/β-1,3-glucan-NP) based on water-soluble glycopolymers (PGlc),β-1,3-glucan polysaccharide, and conjugated phosphorescent Ir (III) complexes were successfully synthesized by self-assembly. The obtained nanoparticles have good spherical morphological characterization with a mean diameter of 50 nm measured by TEM. Ir/PGlc-NP and Ir/β-1,3-glucan-NP showed the same emission maxima at 565 nm in aqueous solution and both caused effective apoptosis and death of HepG2 and Hela cells after being irradiated at 445 nm for 30 min in vitro. Fluorescence cellular imaging was conducted by confocal laser scanning microscopy (CLSM) using HepG2 cells as the model cell in which the nanoparticles had successfully entered into the cytoplasm with high brightness. Furthermore, after injecting the nanoparticles into live mice in vivo, the real-time fluorescence imaging as well as the nanoparticles distribution in organs at 24 hours after administration indicated that these nanoparticles can serve as fluorescent imaging contrast for further biological applications.
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15
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Liao H, Wang Z, Chen S, Wu H, Ma X, Tan M. One-pot synthesis of gadolinium(iii) doped carbon dots for fluorescence/magnetic resonance bimodal imaging. RSC Adv 2015. [DOI: 10.1039/c5ra09948j] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
One-pot synthesis of gadolinium(iii) doped carbon dots using a facile hydrothermal approach was conducted for fluorescence/magnetic resonance bimodal imaging.
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Affiliation(s)
- Han Liao
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Ziyi Wang
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Song Chen
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Hao Wu
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Xiaojun Ma
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Mingqian Tan
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
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16
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Li Y, Qian Y, Liu T, Zhang G, Hu J, Liu S. Asymmetrically functionalized β-cyclodextrin-based star copolymers for integrated gene delivery and magnetic resonance imaging contrast enhancement. Polym Chem 2014. [DOI: 10.1039/c3py01278f] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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17
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Gröger D, Paulus F, Licha K, Welker P, Weinhart M, Holzhausen C, Mundhenk L, Gruber AD, Abram U, Haag R. Synthesis and Biological Evaluation of Radio and Dye Labeled Amino Functionalized Dendritic Polyglycerol Sulfates as Multivalent Anti-Inflammatory Compounds. Bioconjug Chem 2013; 24:1507-14. [DOI: 10.1021/bc400047f] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Dominic Gröger
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr.
3 and Fabeckstr. 34-36, 14195 Berlin, Germany
| | - Florian Paulus
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr.
3 and Fabeckstr. 34-36, 14195 Berlin, Germany
| | - Kai Licha
- mivenion GmbH,
Robert-Koch-Platz 4, 10115 Berlin, Germany
| | - Pia Welker
- mivenion GmbH,
Robert-Koch-Platz 4, 10115 Berlin, Germany
| | - Marie Weinhart
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr.
3 and Fabeckstr. 34-36, 14195 Berlin, Germany
| | - Cornelia Holzhausen
- Department of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertag-Str.
15, 14163 Berlin, Germany
| | - Lars Mundhenk
- Department of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertag-Str.
15, 14163 Berlin, Germany
| | - Achim D. Gruber
- Department of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertag-Str.
15, 14163 Berlin, Germany
| | - Ulrich Abram
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr.
3 and Fabeckstr. 34-36, 14195 Berlin, Germany
| | - Rainer Haag
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr.
3 and Fabeckstr. 34-36, 14195 Berlin, Germany
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