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Fu S, Cai Z, Liu L, Fu X, Xia C, Lui S, Gong Q, Song B, Ai H. PEGylated Amphiphilic Gd-DOTA Backboned-Bound Branched Polymers as Magnetic Resonance Imaging Contrast Agents. Biomacromolecules 2023; 24:5998-6008. [PMID: 37945532 DOI: 10.1021/acs.biomac.3c00987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
MRI contrast agents with high kinetic stability and relaxivity are the key objectives in the field. We previously reported that Gd-DOTA backboned-bound branched polymers possess high kinetic stability and significantly increased T1 relaxivity than traditional branched polymer contrast agents. In this work, non-PEGylated and PEGylated amphiphilic Gd-DOTA backboned-bound branched polymers [P(GdDOTA-C6), P(GdDOTA-C10), mPEG-P(GdDOTA-C6), and mPEG-P(GdDOTA-C10)] were obtained by sequential introduction of rigid carbon chains (1,6-hexamethylenediamine or 1,10-diaminodecane) and mPEG into the structure of Gd-DOTA backboned-bound branched polymers. It is found that the introduction of both rigid carbon chains, especially the longer one, and mPEG can increase the kinetic stability and T1 relaxivity of Gd-DOTA backboned-bound branched polymers. Among them, mPEG-P(GdDOTA-C10) possesses the highest kinetic stability (significantly higher than those of linear Gd-DTPA and cyclic Gd-DOTA-butrol) and T1 relaxivity (42.9 mM-1 s-1, 1.5 T), 11 times that of Gd-DOTA and 1.4 times that of previously reported Gd-DOTA backboned-bound branched polymers. In addition, mPEG-P(GdDOTA-C10) showed excellent MRA effect in cardiovascular and hepatic vessels at a dose (0.025 or 0.05 mmol Gd/kg BW) far below the clinical range (0.1-0.3 mmol Gd/kg BW). Overall, effective branched-polymer-based contrast agents can be obtained by a strategy in which rigid carbon chains and PEG were introduced into the structure of Gd-DOTA backbone-bound branched polymers, resulting in excellent kinetic stability and enhanced T1 relaxivity.
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Affiliation(s)
- Shengxiang Fu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610065, China
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu 610041, China
| | - Zhongyuan Cai
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610065, China
| | - Li Liu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610065, China
| | - Xiaomin Fu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610065, China
| | - Chunchao Xia
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Su Lui
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu 610041, China
- Psychoradiology Research Unit of Chinese Academy of Medical Sciences, Sichuan University, Chengdu 610041, China
| | - Bin Song
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Hua Ai
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610065, China
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
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Fu S, Cai Z, Liu L, Fu X, Wu C, Du L, Xia C, Lui S, Gong Q, Song B, Ai H. Gadolinium(III) Complex-Backboned Branched Polymers as Imaging Probes for Contrast-Enhanced Magnetic Resonance Angiography. ACS APPLIED MATERIALS & INTERFACES 2023; 15:18311-18322. [PMID: 37000117 DOI: 10.1021/acsami.3c00610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Compared to traditional branched polymers with Gd(III) chelates conjugated on their surface, branched polymers with Gd(III) chelates as the internal skeleton are considered to be a reasonable strategy for preparing efficient magnetic resonance imaging contrast agents. Herein, the Gd(III) ligand DOTA was chosen as the internal skeleton; four different molecular weights (3.5, 5.3, 8.6, and 13.1 kDa) and degrees of branching poly-DOTA branched polymers (P1, P2, P3, and P4) were synthesized by a simple "A2 + B4"-type one-pot polymerization. The Gd(III) chelates of these poly-DOTA branched polymers (P1-Gd, P2-Gd, P3-Gd, and P4-Gd) display excellent kinetic stability, which is significantly higher than those of linear Gd-DTPA and cyclic Gd-DOTA-butrol and slightly lower than that of cyclic Gd-DOTA. The T1 relaxivities of P1-Gd, P2-Gd, P3-Gd, and P4-Gd are 29.4, 38.7, 44.0, and 47.9 Gd mM-1 s-1, respectively, at 0.5 T, which are about 6-11 times higher than that of Gd-DOTA (4.4 Gd mM-1 s-1). P4-Gd was selected for in vivo magnetic resonance angiography (MRA) because of its high kinetic stability, T1 relaxivity, and good biosafety. The results showed excellent MRA effect, sensitive detection of vascular stenosis, and prolonged observation window as compared to Gd-DOTA. Overall, Gd(III) chelates of poly-DOTA branched polymers are good candidates of MRI probes, providing a unique design strategy in which Gd chelation can occur at both the interior and surface of the poly-DOTA branched polymers, resulting in excellent relaxivity enhancement. In vivo animal MRA studies of the probe provide possibilities in discovering small vascular pathologies.
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Affiliation(s)
- Shengxiang Fu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610065, China
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu 610041, China
| | - Zhongyuan Cai
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610065, China
| | - Li Liu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610065, China
| | - Xiaomin Fu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610065, China
| | - Changqiang Wu
- Medical Imaging Key Laboratory of Sichuan Province and School of Medical Imaging, North Sichuan Medical College, Nanchong, 637000, China
| | - Liang Du
- Medical Imaging Key Laboratory of Sichuan Province and School of Medical Imaging, North Sichuan Medical College, Nanchong, 637000, China
| | - Chunchao Xia
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Su Lui
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu 610041, China
- Psychoradiology Research Unit of Chinese Academy of Medical Sciences, Sichuan University, Chengdu 610041, China
| | - Bin Song
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Hua Ai
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610065, China
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
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Baby A, Julietraja K, Xavier DA. On Molecular Structural Characterization of Cyclen Cored Dendrimers. Polycycl Aromat Compd 2023. [DOI: 10.1080/10406638.2023.2179641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Affiliation(s)
- Annmaria Baby
- Department of Mathematics, Loyola College, University of Madras, Chennai, India
| | - K. Julietraja
- Department of Mathematics, St. Joseph’s College of Engineering, Chennai, India
| | - D. Antony Xavier
- Department of Mathematics, Loyola College, University of Madras, Chennai, India
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Rastogi V, Yadav P, Porwal M, Sur S, Verma A. Dendrimer as nanocarrier for drug delivery and drug targeting therapeutics: a fundamental to advanced systematic review. INT J POLYM MATER PO 2022. [DOI: 10.1080/00914037.2022.2158334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Vaibhav Rastogi
- Teerthanker Mahaveer College of Pharmacy, Teerthanker Mahaveer University, Moradabad, India
| | - Pragya Yadav
- Department of Pharmaceutics, Amity Institute of Pharmacy, Amity University, Noida, India
| | - Mayur Porwal
- Teerthanker Mahaveer College of Pharmacy, Teerthanker Mahaveer University, Moradabad, India
| | - Souvik Sur
- Research and Development Center, Teerthanker Mahaveer University, Moradabad, India
| | - Anurag Verma
- Teerthanker Mahaveer College of Pharmacy, Teerthanker Mahaveer University, Moradabad, India
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Singla P, Garg S, McClements J, Jamieson O, Peeters M, Mahajan RK. Advances in the therapeutic delivery and applications of functionalized Pluronics: A critical review. Adv Colloid Interface Sci 2022; 299:102563. [PMID: 34826745 DOI: 10.1016/j.cis.2021.102563] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/15/2021] [Accepted: 11/13/2021] [Indexed: 12/22/2022]
Abstract
Pluronic (PEO-PPO-PEO) block copolymers can form nano-sized micelles with a structure composed of a hydrophobic PPO core and hydrophilic PEO shell layer. Pluronics are U.S. Food and Drug Administration approved polymers, which are widely used for solubilization of drugs and their delivery, gene/therapeutic delivery, diagnostics, and tissue engineering applications due to their non-ionic properties, non-toxicity, micelle forming ability, excellent biocompatibility and biodegradability. Although Pluronics have been employed as drug carrier systems for several decades, numerous issues such as rapid dissolution, shorter residence time in biological media, fast clearance and weak mechanical strength have hindered their efficacy. Pluronics have been functionalized with pH-sensitive, biological-responsive moieties, antibodies, aptamers, folic acid, drugs, different nanoparticles, and photo/thermo-responsive hydrogels. These functionalization strategies enable Pluronics to act as stimuli responsive and targeted drug delivery vehicles. Moreover, Pluronics have emerged in nano-emulsion formulations and have been utilized to improve the properties of cubosomes, dendrimers and nano-sheets, including their biocompatibility and aqueous solubility. Functionalization of Pluronics results in the significant improvement of target specificity, loading capacity, biocompatibility of nanoparticles and stimuli responsive hydrogels for the promising delivery of a range of drugs. Therefore, this review presents an overview of all advancements (from the last 15 years) in functionalized Pluronics, providing a valuable tool for industry and academia in order to optimize their use in drug or therapeutic delivery, in addition to several other biomedical applications.
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Affiliation(s)
- Pankaj Singla
- School of Engineering, Merz Court, Claremont Road, Newcastle University, Newcastle Upon Tyne NE1 7RU, United Kingdom
| | - Saweta Garg
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar 143005, India
| | - Jake McClements
- School of Engineering, Merz Court, Claremont Road, Newcastle University, Newcastle Upon Tyne NE1 7RU, United Kingdom
| | - Oliver Jamieson
- School of Engineering, Merz Court, Claremont Road, Newcastle University, Newcastle Upon Tyne NE1 7RU, United Kingdom
| | - Marloes Peeters
- School of Engineering, Merz Court, Claremont Road, Newcastle University, Newcastle Upon Tyne NE1 7RU, United Kingdom.
| | - Rakesh Kumar Mahajan
- Department of Chemistry, UGC-Centre for Advanced Studies-I, Guru Nanak Dev University, Amritsar 143005, India.
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Saadati A, Hasanzadeh M, Seidi F. Biomedical application of hyperbranched polymers: Recent Advances and challenges. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116308] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Raju R, Rajasekar S, Raghunathan R, Arumugam N, Almansour AI, Suresh Kumar R. Regioselective synthesis and antioxidant activity of a novel class of mono and C-symmetric bis-1,2,3-triazole and acridinedione grafted macromolecules. JOURNAL OF SAUDI CHEMICAL SOCIETY 2020. [DOI: 10.1016/j.jscs.2020.10.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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8
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Molloy JK, Nonat AM, O’Brien JE, Brougham DF, Gunnlaugsson T. Self-assembled Ln(III) cyclen-based micelles and AuNPs conjugates as candidates for luminescent and magnetic resonance imaging (MRI) agents. Supramol Chem 2020. [DOI: 10.1080/10610278.2020.1742912] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jennifer K. Molloy
- Département de Chimie Moléculaire, Université Grenoble Alpes, Grenoble, France
- School of Chemistry and Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, Dublin, Ireland
| | - Aline M. Nonat
- School of Chemistry and Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, Dublin, Ireland
- SynPA, IPHC, Université de Strasbourg, ECPM, Strasbourg, France
| | - John E. O’Brien
- School of Chemistry and Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, Dublin, Ireland
| | - Dermot F. Brougham
- School of Chemistry, University College Dublin, Belfield, Dublin, Ireland
| | - Thorfinnur Gunnlaugsson
- School of Chemistry and Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, Dublin, Ireland
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Fox LJ, Matthews L, Stockdale H, Pichai S, Snow T, Richardson RM, Briscoe WH. Structural changes in lipid mesophases due to intercalation of dendritic polymer nanoparticles: Swollen lamellae, suppressed curvature, and augmented structural disorder. Acta Biomater 2020; 104:198-209. [PMID: 31904557 DOI: 10.1016/j.actbio.2019.12.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 12/21/2019] [Accepted: 12/30/2019] [Indexed: 12/19/2022]
Abstract
Understanding interactions between nanoparticles and model membranes is relevant to functional nano-composites and the fundamentals of nanotoxicity. In this study, the effect of polyamidoamine (PAMAM) dendrimers as model nanoparticles (NP) on the mesophase behaviour of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoethanolamine (POPE) has been investigated using high-pressure small-angle X-ray scattering (HP-SAXS). The pressure-temperature (p-T) diagrams for POPE mesophases in excess water were obtained in the absence and presence of G2 and G4 polyamidoamine (PAMAM) dendrimers (29 Å and 45 Å in diameter, respectively) at varying NP-lipid number ratio (ν = 0.0002-0.02) over the pressure range p = 1-3000 bar and temperature range T = 20-80 °C. The p-T phase diagram of POPE exhibited the Lβ, Lα and HII phases. Complete analysis of the phase diagrams, including the relative area pervaded by different phases, phase transition temperatures (Tt) and pressures (pt), the lattice parameters (d-spacing), the pressure-dependence of d-spacing (Δd/Δp), and the structural ordering in the mesophase as gauged by the Scherrer coherence length (L) permitted insights into the size- and concentration-dependent interactions between the dendrimers and the model membrane system. The addition of dendrimers changed the phase transition pressure and temperature and resulted in the emergence of highly swollen lamellar phases, dubbed Lβ-den and Lα-den. G4 PAMAM dendrimers at the highest concentration ν = 0.02 suppressed the formation of the HII phase within the temperature range studied, whereas the addition of G2 PAMAM dendrimers at the same concentration promoted an extended mixed lamellar region in which Lα and Lβ phases coexisted. STATEMENT OF SIGNIFICANCE: Using high pressure small angle X-ray scattering in the pressure range 1-3000 bar and temperature range 20-60 °C, we have studied interactions between PAMAM dendrimers (as model nanoparticles) and POPE lipid mesophases (as model membranes). We report the pressure-temperature phase diagrams for the dendrimer-lipid mesophases for the first time. We find that the dendrimers alter the phase transition temperatures (Tt) and pressures (pt), the lattice parameters (d-spacing), and the structural order in the mesophase. We interpret these unprecedented results in terms of the fluidity of the lipid membranes and the interactions between the dendrimers and the membranes. Our findings are of fundamental relevance to the field of nanotoxicity and functional nanomaterials that integrate nanoparticles and organized lipid structures.
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Jafari M, Abolmaali SS, Najafi H, Tamaddon AM. Hyperbranched polyglycerol nanostructures for anti-biofouling, multifunctional drug delivery, bioimaging and theranostic applications. Int J Pharm 2020; 576:118959. [DOI: 10.1016/j.ijpharm.2019.118959] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/09/2019] [Accepted: 12/12/2019] [Indexed: 12/22/2022]
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11
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Fatemi SM, Fatemi SJ, Abbasi Z. PAMAM dendrimer-based macromolecules and their potential applications: recent advances in theoretical studies. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-019-03076-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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12
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Garello F, Gündüz S, Vibhute S, Angelovski G, Terreno E. Dendrimeric calcium-sensitive MRI probes: the first low-field relaxometric study. J Mater Chem B 2020; 8:969-979. [DOI: 10.1039/c9tb02600b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the present work the first investigation ever of calcium sensitive dendrimer relaxation mechanisms at low fields is reported.
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Affiliation(s)
- Francesca Garello
- Molecular and Preclinical Imaging Centers
- Department of Molecular Biotechnology and Health Sciences
- University of Torino
- 10126 Torino
- Italy
| | - Serhat Gündüz
- MR Neuroimaging Agents
- Max Planck Institute for Biological Cybernetics
- Max-Planck-Ring 11
- 72076 Tuebingen
- Germany
| | - Sandip Vibhute
- Physiology of Cognitive Processes
- Max Planck Institute for Biological Cybernetics
- Max-Planck-Ring 8
- 72076 Tuebingen
- Germany
| | - Goran Angelovski
- MR Neuroimaging Agents
- Max Planck Institute for Biological Cybernetics
- Max-Planck-Ring 11
- 72076 Tuebingen
- Germany
| | - Enzo Terreno
- Molecular and Preclinical Imaging Centers
- Department of Molecular Biotechnology and Health Sciences
- University of Torino
- 10126 Torino
- Italy
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Li J, Li Q, He M, Ding F, Cai L, Zhao M, Dong L, Wang Q, Xu K. AS1411 aptamer-modified theranostic liposomes co-encapsulating manganese oxide nano-contrast agent and paclitaxel for MRI and therapy of cancer. RSC Adv 2019; 9:34837-34846. [PMID: 35530716 PMCID: PMC9074166 DOI: 10.1039/c9ra06878c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 10/14/2019] [Indexed: 01/03/2023] Open
Abstract
With the advantages and development of MRI nano-contrast agents (CAs), increasing number of MRI-based theranostic nanoparticles have emerged. Liposome, as a biosafe nanocarrier has been used phase III trial for cancer treatment. In this study, liposome was employed as a nanocarrier to co-encapsulate MRI nano-contrast agent poly(ethylene glycol)-grafted manganese oxide (PEG-MnO) and anticancer drug paclitaxel (PTX) for the fabrication of a novel theranostic nanocomplex. After being further modified with AS1411 aptamer, the obtained nanoprobe AS1411-liposome-PEG-MnO-PTX displayed the potential of simultaneous MRI diagnosis and therapy of renal carcinoma in vitro and in vivo. It was found that compared with PEG-MnO nano-CA, liposome-PEG-MnO and AS1411-liposome-PEG-MnO presented a stronger MR contrast enhancement effect in the tumor and longer retention time in the tumor region. More importantly, the introduction of AS1411 aptamer further enhanced the MRI effect and the tumor growth inhibition effect, showing its potential use as a theranostic nanoprobe for renal carcinoma. AS1411 aptamer modified theranostic liposomes co-encapsulating manganese oxide nano-contrast agent and paclitaxel for MRI and therapy of cancer was realized.![]()
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Affiliation(s)
- Jingjing Li
- Department of Radiology
- Affiliated Hospital of Xuzhou Medical University
- Xuzhou 221006
- China
- School of Medical Imaging
| | - Qing Li
- School of Medical Imaging
- Xuzhou Medical University
- Xuzhou 221004
- China
| | - Meijuan He
- School of Medical Imaging
- Xuzhou Medical University
- Xuzhou 221004
- China
| | - Fan Ding
- School of Medical Imaging
- Xuzhou Medical University
- Xuzhou 221004
- China
| | - Lulu Cai
- School of Medical Imaging
- Xuzhou Medical University
- Xuzhou 221004
- China
| | - Mingming Zhao
- School of Medical Imaging
- Xuzhou Medical University
- Xuzhou 221004
- China
| | - Lina Dong
- School of Medical Imaging
- Xuzhou Medical University
- Xuzhou 221004
- China
| | - Qi Wang
- School of Medical Imaging
- Xuzhou Medical University
- Xuzhou 221004
- China
| | - Kai Xu
- Department of Radiology
- Affiliated Hospital of Xuzhou Medical University
- Xuzhou 221006
- China
- School of Medical Imaging
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14
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PAMAM dendrimer - cell membrane interactions. Adv Colloid Interface Sci 2018; 257:1-18. [PMID: 30008347 DOI: 10.1016/j.cis.2018.06.005] [Citation(s) in RCA: 140] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 06/20/2018] [Accepted: 06/21/2018] [Indexed: 12/16/2022]
Abstract
PAMAM dendrimers have been conjectured for a wide range of biomedical applications due to their tuneable physicochemical properties. However, their application has been hindered by uncertainties in their cytotoxicity, which is influenced by dendrimer generation (i.e. size and surface group density), surface chemistry, and dosage, as well as cell specificity. In this review, biomedical applications of polyamidoamine (PAMAM) dendrimers and some related cytotoxicity studies are first outlined. Alongside these in vitro experiments, lipid membranes such as supported lipid bilayers (SLBs), liposomes, and Langmuir monolayers have been used as cell membrane models to study PAMAM dendrimer-membrane interactions. Related experimental and theoretical studies are summarized, and the physical insights from these studies are discussed to shed light on the fundamental understanding of PAMAM dendrimer-cell membrane interactions. We conclude with a summary of some questions that call for further investigations.
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Narmani A, Farhood B, Haghi-Aminjan H, Mortezazadeh T, Aliasgharzadeh A, Mohseni M, Najafi M, Abbasi H. Gadolinium nanoparticles as diagnostic and therapeutic agents: Their delivery systems in magnetic resonance imaging and neutron capture therapy. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.01.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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16
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Malaza S, Govender P, Schutte‐Smith M, Visser HG, Smith GS. Synthesis and Substitution Kinetics of Tricarbonylrhenium(I) Dendritic Complexes. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700661] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Siphelele Malaza
- Department of Chemistry University of Cape Town Rondebosch 7701 Cape Town South Africa
| | - Preshendren Govender
- Department of Chemistry University of Cape Town Rondebosch 7701 Cape Town South Africa
| | - Marietjie Schutte‐Smith
- Department of Chemistry University of the Free State P. O. Box 339 9300 Bloemfontein South Africa
| | - Hendrik G. Visser
- Department of Chemistry University of the Free State P. O. Box 339 9300 Bloemfontein South Africa
| | - Gregory S. Smith
- Department of Chemistry University of Cape Town Rondebosch 7701 Cape Town South Africa
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Tei L, Gugliotta G, Gambino G, Fekete M, Botta M. Developing High Field MRI Contrast Agents by Tuning the Rotational Dynamics: Bisaqua GdAAZTA-based Dendrimers. Isr J Chem 2017. [DOI: 10.1002/ijch.201700041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Lorenzo Tei
- Dipartimento di Scienze e Innovazione Tecnologica; Università del Piemonte Orientale “A. Avogadro”; Viale Teresa Michel 11 15121 Alessandria Italy
| | - Giuseppe Gugliotta
- Dipartimento di Scienze e Innovazione Tecnologica; Università del Piemonte Orientale “A. Avogadro”; Viale Teresa Michel 11 15121 Alessandria Italy
| | - Giuseppe Gambino
- Dipartimento di Scienze e Innovazione Tecnologica; Università del Piemonte Orientale “A. Avogadro”; Viale Teresa Michel 11 15121 Alessandria Italy
| | - Marianna Fekete
- Dipartimento di Scienze e Innovazione Tecnologica; Università del Piemonte Orientale “A. Avogadro”; Viale Teresa Michel 11 15121 Alessandria Italy
| | - Mauro Botta
- Dipartimento di Scienze e Innovazione Tecnologica; Università del Piemonte Orientale “A. Avogadro”; Viale Teresa Michel 11 15121 Alessandria Italy
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Perspectives on dendritic architectures and their biological applications: From core to cell. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 173:61-83. [PMID: 28564631 DOI: 10.1016/j.jphotobiol.2017.05.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 05/15/2017] [Accepted: 05/18/2017] [Indexed: 12/24/2022]
Abstract
The challenges of medicine today include the increasing stipulation for sensitive and effective systems that can improve the pathological responses with a simultaneous reduction in accumulation and drug side effects. The demand can be fulfilled through the advancements in nanomedicine that includes nanostructures and nanodevices for diagnosing, treating, and prevention of various diseases. In this respect, the nanoscience provides various novel techniques with carriers such as micelles, dendrimers, particles and vesicles for the transportation of active moieties. Further, an efficient way to improve these systems is through stimuli a responsive system that utilizes supramolecular hyperbranched structures to meet the above criteria. The stimuli-responsive dendritic architectures exhibit spatial, temporal, convenient, effective, safety and controlled drug release in response to specific trigger through electrostatic interactions plus π stacking. The stimuli-responsive systems are capable of sequestering the drug molecules underneath a predefined set of conditions and discharge them in a different environment through either exogenous or endogenous stimulus. The incorporation of photoresponsive moieties at various components of dendrimer such as core, branches or at the peripheral end exaggerates its significance in various allied fields of nanotechnology which includes sensors, photoswitch, electronic widgets and in drug delivery systems. This is due to the light instigated geometrical modifications at the core or at the surface molecules which generates huge conformational changes throughout the hyperbranched structure. Further, numerous synthetic methodologies have been investigated for utilization of dendrimers in therapeutic drug delivery and its applicability towards stimuli responsive systems such as photo-instigated, thermal-instigated, and pH-instigated hyperbranched structures and their advancement in the field of nanomedicine. This paper highlights the fascinating theoretical advances and principal mechanisms of dendrimer synthesis and their ability to capture light that strengthens its applicability from radiant energy to medical photonics.
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19
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Kondo T, Kimura Y, Yamada H, Aoyama Y. Polymeric 1 H MRI Probes for Visualizing Tumor In Vivo. CHEM REC 2017; 17:555-568. [PMID: 28387472 DOI: 10.1002/tcr.201600144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Indexed: 11/09/2022]
Abstract
Magnetic resonance imaging (MRI) has become a prominent non- or low-invasive imaging technique, providing high-resolution, three-dimensional images as well as physiological information about tissues. Low-molecular-weight Gd-MRI contrast agents (CAs), such as Gd-DTPA (DTPA: diethylenetriaminepentaacetic acid), are commonly used in the clinical diagnosis, while macromolecular Gd-MRI CAs have several advantages over low-molecular-weight Gd-MRI CAs, which help minimize the dose of CAs and the risk of side effects. Accordingly, we developed chiral dendrimer Gd-MRI CAs, which showed high r1 values. The association constant values (Ka ) of S-isomeric dendrimer CAs to bovine serum albumin (BSA) were higher than those of R-isomeric dendrimer CAs. Besides, based on a totally new concept, we developed 13 C/15 N-enriched multiple-resonance NMR/MRI probes, which realized highly selective observation of the probes and analysis of metabolic reactions of interest. This account summarizes our recent study on developing both chiral dendrimer Gd-MRI CAs, and self-traceable 13 C/15 N-enriched phosphorylcholine polymer probes for early detection of tumors.
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Affiliation(s)
- Teruyuki Kondo
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 6158510, JAPAN
| | - Yu Kimura
- Research and Educational Unit of Leaders for Integrated Medical Systems, Center for the Promotion of Interdisciplinary Education and Research, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 6158510, JAPAN
| | - Hisatsugu Yamada
- Field of Bioresource Chemistry and Technology, Graduate School of Bioscience and Bioindustry, Tokushima University, 2-1, Minamijosanjima-cho, Tokushima, 7708506, JAPAN
| | - Yasuhiro Aoyama
- Professor emeritus, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 6158510, JAPAN
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20
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Ding L, Hu Y, Luo Y, Zhu J, Wu Y, Yu Z, Cao X, Peng C, Shi X, Guo R. LAPONITE®-stabilized iron oxide nanoparticles for in vivo MR imaging of tumors. Biomater Sci 2017; 4:474-82. [PMID: 26730414 DOI: 10.1039/c5bm00508f] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report the synthesis, characterization and utilization of LAPONITE®-stabilized magnetic iron oxide nanoparticles (LAP-Fe3O4 NPs) as a high performance contrast agent for in vivo magnetic resonance (MR) detection of tumors. In this study, Fe3O4 NPs were synthesized by a facile controlled coprecipitation route in LAP solution, and the formed LAP-Fe3O4 NPs have great colloidal stability and about 2-fold increase of T2 relaxivity than Fe3O4 NPs (from 247.6 mM(-1) s(-1) to 475.9 mM(-1) s(-1)). Moreover, cytotoxicity assay and cell morphology observation demonstrate that LAP-Fe3O4 NPs display good biocompatibility in the given Fe concentration range, and in vivo biodistribution results prove that NPs can be metabolized and cleared out of the body. Most importantly, LAP-Fe3O4 NPs can not only be used as a contrast agent for MR imaging of cancer cells in vitro due to the effective uptake by tumor cells, but also significantly enhance the contrast of a xenografted tumor model. Therefore, the developed LAP-based Fe3O4 NPs with good colloidal stability and exceptionally high transverse relaxivity may have tremendous potential in MR imaging applications.
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Affiliation(s)
- Ling Ding
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China.
| | - Yong Hu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China.
| | - Yu Luo
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China.
| | - Jianzhi Zhu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China.
| | - Yilun Wu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China.
| | - Zhibo Yu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China.
| | - Xueyan Cao
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China.
| | - Chen Peng
- Department of Radiology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, People's Republic of China.
| | - Xiangyang Shi
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China. and State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai, 201620, People's Republic of China
| | - Rui Guo
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China.
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21
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Namazi H, Hashemipour SS, Toomari Y. Synthesis of citric-acid-based dendrimers decorated with ferrocenyl groups and investigation of their electroactivity. Polym Bull (Berl) 2017. [DOI: 10.1007/s00289-017-1930-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Meloni MM, Barton S, Xu L, Kaski JC, Song W, He T. Contrast agents for cardiovascular magnetic resonance imaging: an overview. J Mater Chem B 2017; 5:5714-5725. [DOI: 10.1039/c7tb01241a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Contrast agents for Cardiovascular Magnetic Resonance (CMR) play a major role in research and clinical cardiology.
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Affiliation(s)
- Marco M. Meloni
- Molecular and Clinical Sciences Research Institute
- St George's, University of London
- London
- UK
- School of Pharmacy and Chemistry
| | - Stephen Barton
- School of Pharmacy and Chemistry
- Kingston University
- London
- UK
| | - Lei Xu
- Department of Radiology
- Beijing Anzhen Hospital
- Beijing
- China
| | - Juan C. Kaski
- Molecular and Clinical Sciences Research Institute
- St George's, University of London
- London
- UK
| | - Wenhui Song
- UCL Centre for Biomaterials
- Division of surgery & Interventional Science
- University College of London
- London
- UK
| | - Taigang He
- Molecular and Clinical Sciences Research Institute
- St George's, University of London
- London
- UK
- Royal Brompton Hospital
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23
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Zhang H, Zhang Q, Hong C, Zou G. Asymmetric Michael addition in an aqueous environment with the assistance of optically active hyperbranched polymers. Polym Chem 2017. [DOI: 10.1039/c7py00036g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel optically active hyperbranched polymer can serve as the chiral scaffolds to promote asymmetric Michael addition reaction in an aqueous environment with a high product yield and enantioselectivity.
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Affiliation(s)
- Hongli Zhang
- Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- iChEM
- University of Science and Technology of China
- Hefei
| | - Qijin Zhang
- Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- iChEM
- University of Science and Technology of China
- Hefei
| | - Chunyan Hong
- Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- iChEM
- University of Science and Technology of China
- Hefei
| | - Gang Zou
- Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- iChEM
- University of Science and Technology of China
- Hefei
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24
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Sun W, Mignani S, Shen M, Shi X. Dendrimer-based magnetic iron oxide nanoparticles: their synthesis and biomedical applications. Drug Discov Today 2016; 21:1873-1885. [DOI: 10.1016/j.drudis.2016.06.028] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 05/26/2016] [Accepted: 06/28/2016] [Indexed: 01/10/2023]
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25
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Tomalia DA, Khanna SN. A Systematic Framework and Nanoperiodic Concept for Unifying Nanoscience: Hard/Soft Nanoelements, Superatoms, Meta-Atoms, New Emerging Properties, Periodic Property Patterns, and Predictive Mendeleev-like Nanoperiodic Tables. Chem Rev 2016; 116:2705-74. [DOI: 10.1021/acs.chemrev.5b00367] [Citation(s) in RCA: 166] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Donald A. Tomalia
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284, United States
- National Dendrimer & Nanotechnology Center, NanoSynthons LLC, 1200 North Fancher Avenue, Mt. Pleasant, Michigan 48858, United States
| | - Shiv N. Khanna
- Department
of Physics, Virginia Commonwealth University, Richmond, Virginia 23284, United States
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26
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Dendrimer-Based Nanodevices as Contrast Agents for MR Imaging Applications. SPRINGER SERIES IN BIOMATERIALS SCIENCE AND ENGINEERING 2016. [DOI: 10.1007/978-3-662-48544-6_8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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27
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Pharmacokinetics of Chiral Dendrimer-Triamine-Coordinated Gd-MRI Contrast Agents Evaluated by in Vivo MRI and Estimated by in Vitro QCM. SENSORS 2015; 15:31973-86. [PMID: 26694418 PMCID: PMC4721819 DOI: 10.3390/s151229900] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 12/08/2015] [Accepted: 12/11/2015] [Indexed: 12/28/2022]
Abstract
Recently, we developed novel chiral dendrimer-triamine-coordinated Gd-MRI contrast agents (Gd-MRI CAs), which showed longitudinal relaxivity (r1) values about four times higher than that of clinically used Gd-DTPA (Magnevist®, Bayer). In our continuing study of pharmacokinetic differences derived from both the chirality and generation of Gd-MRI CAs, we found that the ability of chiral dendrimer Gd-MRI CAs to circulate within the body can be directly evaluated by in vitro MRI (7 T). In this study, the association constants (Ka) of chiral dendrimer Gd-MRI CAs to bovine serum albumin (BSA), measured and calculated with a quartz crystal microbalance (QCM) in vitro, were found to be an extremely easy means for evaluating the body-circulation ability of chiral dendrimer Gd-MRI CAs. The Ka values of S-isomeric dendrimer Gd-MRI CAs were generally greater than those of R-isomeric dendrimer Gd-MRI CAs, which is consistent with the results of our previous MRI study in vivo.
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28
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Cai H, Li K, Li J, Wen S, Chen Q, Shen M, Zheng L, Zhang G, Shi X. Dendrimer-Assisted Formation of Fe3O4/Au Nanocomposite Particles for Targeted Dual Mode CT/MR Imaging of Tumors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:4584-4593. [PMID: 26061810 DOI: 10.1002/smll.201500856] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2015] [Revised: 05/01/2015] [Indexed: 06/04/2023]
Abstract
A unique dendrimer-assisted approach is reported to create Fe3O4/Au nanocomposite particles (NCPs) for targeted dual mode computed tomography/magnetic resonance (CT/MR) imaging of tumors. In this approach, preformed Fe3O4 nanoparticles (NPs) are assembled with multilayers of poly(γ-glutamic acid) (PGA)/poly(L-lysine)/PGA/folic acid (FA)-modified dendrimer-entrapped gold nanoparticles via a layer-by-layer self-assembly technique. The interlayers are crosslinked via 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide chemistry, the assembled Au core NPs are then used as seed particles for subsequent seed-mediated growth of Au shells via iterative Au salt reduction process, and subsequent acetylation of the remaining amines of dendrimers leads to the formation of Fe3O4/Au(n.)Ac-FA NCPs with a tunable molar ratio of Au/Fe3O4. It is shown that the Fe3O4/Au(n.)Ac-FA NCPs at an optimized Au/Fe3O4 molar ratio of 2.02 display a relatively high R2 relaxivity (92.67 × 10(-3) M(-1) s(-1)) and good X-ray attenuation property, and are cytocompatible and hemocompatible in the given concentration range. Importantly, with the FA-mediated targeting, the Fe3O4/Au(n.)Ac-FA NCPs are able to be specifically uptaken by cancer cells overexpressing FA receptors, and be used as an efficient nanoprobe for targeted dual mode CT/MR imaging of a xenografted tumor model. With the versatile dendrimer chemistry, the developed Fe3O4/Au NCPs may be differently functionalized, thereby providing a unique platform for diagnosis and therapy of different biological systems.
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Affiliation(s)
- Hongdong Cai
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Kangan Li
- Department of Radiology, Shanghai General Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200080, P. R. China
| | - Jingchao Li
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P. R. China
| | - Shihui Wen
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P. R. China
| | - Qian Chen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Mingwu Shen
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P. R. China
| | - Linfeng Zheng
- Department of Radiology, Shanghai General Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200080, P. R. China
| | - Guixiang Zhang
- Department of Radiology, Shanghai General Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200080, P. R. China
| | - Xiangyang Shi
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P. R. China
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29
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Fontes A, Karimi S, Helm L, Ferreira PM, André JP. PEGylated DOTA‐AHA‐Based Gd
III
Chelates: A Relaxometric Study. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500688] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- André Fontes
- Centro de Química, Campus de Gualtar, Universidade do Minho, 4710‐057 Braga, Portugal http://www.quimica.uminho.pt/
| | - Shima Karimi
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland http://www.gcib.epfl.ch/helm
| | - Lothar Helm
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland http://www.gcib.epfl.ch/helm
| | - Paula M. Ferreira
- Centro de Química, Campus de Gualtar, Universidade do Minho, 4710‐057 Braga, Portugal http://www.quimica.uminho.pt/
| | - João P. André
- Centro de Química, Campus de Gualtar, Universidade do Minho, 4710‐057 Braga, Portugal http://www.quimica.uminho.pt/
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30
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Miyake Y, Kimura Y, Orito N, Imai H, Matsuda T, Toshimitsu A, Kondo T. Synthesis and functional evaluation of chiral dendrimer-triamine-coordinated Gd complexes with polyaminoalcohol end groups as highly sensitive MRI contrast agents. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.04.050] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Leiro V, Garcia JP, Tomás H, Pêgo AP. The Present and the Future of Degradable Dendrimers and Derivatives in Theranostics. Bioconjug Chem 2015; 26:1182-97. [PMID: 25826129 DOI: 10.1021/bc5006224] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Interest in dendrimer-based nanomedicines has been growing recently, as it is possible to precisely manipulate the molecular weight, chemical composition, and surface functionality of dendrimers, tuning their properties according to the desired biomedical application. However, one important concern about dendrimer-based therapeutics remains-the nondegradability under physiological conditions of the most commonly used dendrimers. Therefore, biodegradable dendrimers represent an attractive class of nanomaterials, since they present advantages over conventional nondegradable dendrimers regarding the release of the loaded molecules and the prevention of bioaccumulation of synthetic materials and subsequent cytotoxicity. Here, we present an overview of the state-of-the-art of the design of biodegradable dendritic structures, with particular focus on the hurdles regarding the use of these as vectors of drugs and nucleic acids, as well as macromolecular contrast agents.
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Affiliation(s)
| | | | - Helena Tomás
- ⊥CQM - Centro de Química da Madeira, MMRG, Universidade da Madeira, Campus Universitário da Penteada, 9000-390 Funchal, Portugal
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Kumar A, Zhang S, Hao G, Hassan G, Ramezani S, Sagiyama K, Lo ST, Takahashi M, Sherry AD, Öz OK, Kovacs Z, Sun X. Molecular platform for design and synthesis of targeted dual-modality imaging probes. Bioconjug Chem 2015; 26:549-58. [PMID: 25615011 PMCID: PMC4428032 DOI: 10.1021/acs.bioconjchem.5b00028] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
We report a versatile dendritic structure
based platform for construction
of targeted dual-modality imaging probes. The platform contains multiple
copies of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid
(DOTA) branching out from a 1,4,7-triazacyclononane-N,N′,N″-triacetic
acid (NOTA) core. The specific coordination chemistries of the NOTA
and DOTA moieties offer specific loading of 68/67Ga3+ and Gd3+, respectively, into a common molecular
scaffold. The platform also contains three amino groups which can
potentiate targeted dual-modality imaging of PET/MRI or SPECT/MRI
(PET: positron emission tomography; SPECT: single photon emission
computed tomography; MRI: magnetic resonance imaging) when further
functionalized by targeting vectors of interest. To validate this
design concept, a bimetallic complex was synthesized with six peripheral
Gd-DOTA units and one Ga-NOTA core at the center, whose ion T1 relaxivity per gadolinium atom was measured
to be 15.99 mM–1 s–1 at 20 MHz.
Further, the bimetallic agent demonstrated its anticipated in vivo
stability, tissue distribution, and pharmacokinetic profile when labeled
with 67Ga. When conjugated with a model targeting peptide
sequence, the trivalent construct was able to visualize tumors in
a mouse xenograft model by both PET and MRI via a single dose injection.
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Affiliation(s)
- Amit Kumar
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Shanrong Zhang
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Guiyang Hao
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Gedaa Hassan
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Saleh Ramezani
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Koji Sagiyama
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Su-Tang Lo
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Masaya Takahashi
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - A Dean Sherry
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Orhan K Öz
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Zoltan Kovacs
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Xiankai Sun
- †Department of Radiology, ‡Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
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Fontes A, Karimi S, Helm L, Yulikov M, Ferreira PM, André JP. Dinuclear DOTA-Based GdIIIChelates - Revisiting a Straightforward Strategy for Relaxivity Improvement. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201403159] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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34
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Dong R, Zhou Y, Huang X, Zhu X, Lu Y, Shen J. Functional supramolecular polymers for biomedical applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:498-526. [PMID: 25393728 DOI: 10.1002/adma.201402975] [Citation(s) in RCA: 341] [Impact Index Per Article: 37.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 08/17/2014] [Indexed: 05/08/2023]
Abstract
As a novel class of dynamic and non-covalent polymers, supramolecular polymers not only display specific structural and physicochemical properties, but also have the ability to undergo reversible changes of structure, shape, and function in response to diverse external stimuli, making them promising candidates for widespread applications ranging from academic research to industrial fields. By an elegant combination of dynamic/reversible structures with exceptional functions, functional supramolecular polymers are attracting increasing attention in various fields. In particular, functional supramolecular polymers offer several unique advantages, including inherent degradable polymer backbones, smart responsiveness to various biological stimuli, and the ease for the incorporation of multiple biofunctionalities (e.g., targeting and bioactivity), thereby showing great potential for a wide range of applications in the biomedical field. In this Review, the trends and representative achievements in the design and synthesis of supramolecular polymers with specific functions are summarized, as well as their wide-ranging biomedical applications such as drug delivery, gene transfection, protein delivery, bio-imaging and diagnosis, tissue engineering, and biomimetic chemistry. These achievements further inspire persistent efforts in an emerging interdisciplin-ary research area of supramolecular chemistry, polymer science, material science, biomedical engineering, and nanotechnology.
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Affiliation(s)
- Ruijiao Dong
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, PR China
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35
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Dai Y, Zhang A, You J, Li J, Xu H, Xu K. Fabrication of AS1411 aptamer functionalized Gd2O3-based molecular magnetic resonance imaging (mMRI) nanoprobe for renal carcinoma cell imaging. RSC Adv 2015. [DOI: 10.1039/c5ra17211j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A molecular MRI nanoprobe for the sensitive and specific MRI of renal carcinoma cells with BSA-Gd2O3nanoparticles as MRI contrast agents, mesoporous silica nanoparticles as nanocarriers and AS1411 aptamer as targeting molecule was developed.
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Affiliation(s)
- Yue Dai
- Department of Radiology
- Affiliated Hospital of Xuzhou Medical College
- Xuzhou 221006
- China
- School of Medical Imaging
| | - Aiping Zhang
- School of Medical Imaging
- Xuzhou Medical College
- Xuzhou 221004
- China
| | - Jia You
- School of Medical Imaging
- Xuzhou Medical College
- Xuzhou 221004
- China
| | - Jingjing Li
- Department of Radiology
- Affiliated Hospital of Xuzhou Medical College
- Xuzhou 221006
- China
- School of Medical Imaging
| | - Huiting Xu
- Department of Radiology
- Affiliated Hospital of Xuzhou Medical College
- Xuzhou 221006
- China
- School of Medical Imaging
| | - Kai Xu
- School of Medical Imaging
- Xuzhou Medical College
- Xuzhou 221004
- China
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36
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Parat A, Kryza D, Degoul F, Taleb J, Viallard C, Janier M, Garofalo A, Bonazza P, Heinrich-Balard L, Cohen R, Miot-Noirault E, Chezal JM, Billotey C, Felder-Flesch D. Radiolabeled dendritic probes as tools for high in vivo tumor targeting: application to melanoma. J Mater Chem B 2015; 3:2560-2571. [DOI: 10.1039/c5tb00235d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A small-sized and bifunctional111In-radiolabeled dendron shows highin vivotargeting efficiency towards an intracellular target in a murine melanoma model.
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37
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Abstract
The recent research progress in biological and biomedical applications of hyperbranched polymers has been summarized in this review.
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Affiliation(s)
- Dali Wang
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- 200240 Shanghai
- P. R. China
| | - Tianyu Zhao
- Charles Institute of Dermatology
- School of Medicine and Medical Science
- University College Dublin
- Dublin 4
- Ireland
| | - Xinyuan Zhu
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- 200240 Shanghai
- P. R. China
| | - Deyue Yan
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- 200240 Shanghai
- P. R. China
| | - Wenxin Wang
- Charles Institute of Dermatology
- School of Medicine and Medical Science
- University College Dublin
- Dublin 4
- Ireland
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38
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Gündüz S, Power A, Maier ME, Logothetis NK, Angelovski G. Synthesis and Characterization of a Biotinylated Multivalent Targeted Contrast Agent. Chempluschem 2014; 80:612-622. [DOI: 10.1002/cplu.201402329] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Indexed: 12/29/2022]
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39
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Ameen MA. Designing New Scaffolds Consisting of Hepta-annulated Heterocycles. JOURNAL OF CHEMICAL RESEARCH 2014. [DOI: 10.3184/174751914x14146032272199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The syntheses of hexa and tetra-propargylated pyrido[4′,3′:4,5]thieno[2,3- d]-pyrido[4″’,3″’:4″,5″]thieno[2″,3″:4′,5′] pyrimido[1′,2′:4,5]pyrazino[1,2- a]pyrimidines, are described by the reaction of hepta-annulated heterocyclic systems with propargyl bromide. Multiple alkyne-azide click reaction of these alkyne cores established them as a scaffold for six and four functionalised 1,2,3-triazoles and attached biomolecules.
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Affiliation(s)
- Mohamed A. Ameen
- Chemistry Department, Faculty of Science, Minia University, El-Minia 61519, Egypt
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40
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Tirotta I, Dichiarante V, Pigliacelli C, Cavallo G, Terraneo G, Bombelli FB, Metrangolo P, Resnati G. (19)F magnetic resonance imaging (MRI): from design of materials to clinical applications. Chem Rev 2014; 115:1106-29. [PMID: 25329814 DOI: 10.1021/cr500286d] [Citation(s) in RCA: 340] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ilaria Tirotta
- Laboratory of Nanostructured Fluorinated Materials (NFMLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta" and ‡Fondazione Centro Europeo Nanomedicina, Politecnico di Milano , Milan 20131, Italy
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41
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Aydın Tekdaş D, Garifullin R, Şentürk B, Zorlu Y, Gundogdu U, Atalar E, Tekinay AB, Chernonosov AA, Yerli Y, Dumoulin F, Guler MO, Ahsen V, Gürek AG. Design of a Gd-DOTA-Phthalocyanine Conjugate Combining MRI Contrast Imaging and Photosensitization Properties as a Potential Molecular Theranostic. Photochem Photobiol 2014; 90:1376-86. [DOI: 10.1111/php.12332] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 08/06/2014] [Indexed: 12/28/2022]
Affiliation(s)
| | - Ruslan Garifullin
- Institute of Materials Science and Nanotechnology; National Nanotechnology Research Center (UNAM); Bilkent University; Ankara Turkey
| | - Berna Şentürk
- Institute of Materials Science and Nanotechnology; National Nanotechnology Research Center (UNAM); Bilkent University; Ankara Turkey
| | - Yunus Zorlu
- Department of Chemistry; Gebze Institute of Technology; Kocaeli Turkey
| | - Umut Gundogdu
- National Magnetic Resonance Research Center (UMRAM); Bilkent University; Ankara Turkey
| | - Ergin Atalar
- National Magnetic Resonance Research Center (UMRAM); Bilkent University; Ankara Turkey
- Department of Electrical and Electronics Engineering; Bilkent University; Ankara Turkey
| | - Ayse B. Tekinay
- Institute of Materials Science and Nanotechnology; National Nanotechnology Research Center (UNAM); Bilkent University; Ankara Turkey
| | | | - Yusuf Yerli
- Physics Department; Arts and Science Faculty; Yildiz Technical University; Istanbul Turkey
| | - Fabienne Dumoulin
- Department of Chemistry; Gebze Institute of Technology; Kocaeli Turkey
| | - Mustafa O. Guler
- Institute of Materials Science and Nanotechnology; National Nanotechnology Research Center (UNAM); Bilkent University; Ankara Turkey
| | - Vefa Ahsen
- Department of Chemistry; Gebze Institute of Technology; Kocaeli Turkey
| | - Ayşe Gül Gürek
- Department of Chemistry; Gebze Institute of Technology; Kocaeli Turkey
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42
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Martinelli J, Thangavel K, Tei L, Botta M. Dendrimeric β-Cyclodextrin/GdIIIChelate Supramolecular Host-Guest Adducts as High-Relaxivity MRI Probes. Chemistry 2014; 20:10944-52. [DOI: 10.1002/chem.201402418] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Indexed: 11/11/2022]
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43
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Teresa Albelda M, Garcia-España E, Frias JC. Visualizing the atherosclerotic plaque: a chemical perspective. Chem Soc Rev 2014; 43:2858-76. [PMID: 24526041 DOI: 10.1039/c3cs60410a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Atherosclerosis is the major underlying pathologic cause of coronary artery disease. An early detection of the disease can prevent clinical sequellae such as angina, myocardial infarction, and stroke. The different imaging techniques employed to visualize the atherosclerotic plaque provide information of diagnostic and prognostic value. Furthermore, the use of contrast agents helps to improve signal-to-noise ratio providing better images. For nuclear imaging techniques and optical imaging these agents are absolutely necessary. We report on the different contrast agents that have been used, are used or may be used in future in animals, humans, or excised tissues for the distinct imaging modalities for atherosclerotic plaque imaging.
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Affiliation(s)
- Ma Teresa Albelda
- Universidad de Valencia, Instituto de Ciencia Molecular, Edificio de Institutos de Paterna, c/ Catedrático José Beltrán 2, 46071 Valencia, Spain
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44
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Design, synthesis, and in vitro evaluation of a binary targeting MRI contrast agent for imaging tumor cells. Amino Acids 2014; 46:449-57. [PMID: 24414219 DOI: 10.1007/s00726-013-1638-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Accepted: 12/07/2013] [Indexed: 01/31/2023]
Abstract
A binary targeting vector that consists of peptide sequences of Arg-Gly-Asp (RGD) and Asn-Gly-Arg (NGR) motifs has been designed and synthesized using solid-phase peptide synthesis procedure. The vector is then coupled with Gd-DOTA to work as a targeting contrast agent (CA1) for magnetic resonance imaging of human lung adenocarcinoma cells A549. Its longitudinal relaxivity is measured to be 7.55 mM(-1) s(-1) in aqueous solution at a magnetic field of 11.7 T, which is higher than that of Magnevist (4.25 mM(-1) s(-1)) in the same conditions. The cell experiment shows, at the same concentration, uptake quantity of CA1 by A549 is much more than Magnevist and also superior over CA2 (a single targeting contrast agent contains only RGD). The uptake can be blocked by the targetable peptide containing RGD or NGR without coupling Gd. To summarize, CA1 has very good ability to target A549 and higher relaxivity than that of Magnevist. So CA1 is promising MRI contrast agent for high-resolution MR molecular imaging of human lung adenocarcinoma A549 cells.
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45
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Wang D, Tong G, Dong R, Zhou Y, Shen J, Zhu X. Self-assembly of supramolecularly engineered polymers and their biomedical applications. Chem Commun (Camb) 2014; 50:11994-2017. [DOI: 10.1039/c4cc03155e] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Self-assembly behavior of supramolecularly engineered polymers and their biomedical applications have been summarized.
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Affiliation(s)
- Dali Wang
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- 200240 Shanghai, P. R. China
| | - Gangsheng Tong
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- 200240 Shanghai, P. R. China
- Instrumental Analysis Center
| | - Ruijiao Dong
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- 200240 Shanghai, P. R. China
| | - Yongfeng Zhou
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- 200240 Shanghai, P. R. China
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
| | - Jian Shen
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
- Jiangsu Key Laboratory of Biomedical Materials
- College of Chemistry and Materials Science
- Nanjing Normal University
- 210046 Nanjing, P. R. China
| | - Xinyuan Zhu
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- 200240 Shanghai, P. R. China
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
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46
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Li Y, Laurent S, Esser L, Elst LV, Muller RN, Lowe AB, Boyer C, Davis TP. The precise molecular location of gadolinium atoms has a significant influence on the efficacy of nanoparticulate MRI positive contrast agents. Polym Chem 2014. [DOI: 10.1039/c3py01676e] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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47
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Cheng W, Rajendran R, Ren W, Gu L, Zhang Y, Chuang KH, Liu Y. A facile synthetic approach to a biodegradable polydisulfide MRI contrast agent. J Mater Chem B 2014; 2:5295-5301. [DOI: 10.1039/c4tb00413b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A biodegradable novel polydisulfide MRI contrast agent forming self-assembly in aqueous solution with a low cytotoxicity and a higherr1is promising for producing better MRI imaging with fewer side effects.
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Affiliation(s)
- Weiren Cheng
- Institute of Materials Research and Engineering
- A*STAR (Agency for Science, Technology and Research)
- , Singapore
- Department of Biomedical Engineering
- National University of Singapore
| | - Reshmi Rajendran
- Singapore Bioimaging Consortium
- A*STAR (Agency for Science, Technology and Research)
- , Singapore
| | - Wei Ren
- Institute of Materials Research and Engineering
- A*STAR (Agency for Science, Technology and Research)
- , Singapore
| | - Liuqun Gu
- Institute of Materials Research and Engineering
- A*STAR (Agency for Science, Technology and Research)
- , Singapore
| | - Yong Zhang
- Department of Biomedical Engineering
- National University of Singapore
- , Singapore
| | - Kai-Hsiang Chuang
- Singapore Bioimaging Consortium
- A*STAR (Agency for Science, Technology and Research)
- , Singapore
| | - Ye Liu
- Institute of Materials Research and Engineering
- A*STAR (Agency for Science, Technology and Research)
- , Singapore
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48
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Liu Y, Chiu GNC. Dual-Functionalized PAMAM Dendrimers with Improved P-Glycoprotein Inhibition and Tight Junction Modulating Effect. Biomacromolecules 2013; 14:4226-35. [DOI: 10.1021/bm401057c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yuanjie Liu
- Department
of Pharmacy, Faculty
of Science, National University of Singapore, Block S4, 18 Science Drive 4, Singapore 117543
| | - Gigi N. C. Chiu
- Department
of Pharmacy, Faculty
of Science, National University of Singapore, Block S4, 18 Science Drive 4, Singapore 117543
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49
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Kotková Z, Helm L, Kotek J, Hermann P, Lukeš I. Gadolinium complexes of monophosphinic acid DOTA derivatives conjugated to cyclodextrin scaffolds: efficient MRI contrast agents for higher magnetic fields. Dalton Trans 2013; 41:13509-19. [PMID: 23018269 DOI: 10.1039/c2dt30858d] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Middle-molecular-weight MRI contrast agents based on conjugates of a phosphinic acid DOTA analogue, 1,4,7,10-tetraazacyclododecane-4,7,10-triacetic-1-{methyl[(4-aminophenyl)methyl]phosphinic acid} (DO3AP(ABn)), with amino-substituted cyclodextrins were prepared and studied by a variety of physico-chemical methods. The conjugates were formed by reaction of the corresponding isothiocyanate with per-6-amino-α/β-cyclodextrin and were complexed with the Ln(III) ion to get the final complexes, (LnL)(6)-α-CD and (LnL)(7)-β-CD. Solution structure of the complexes was estimated by investigation of the Eu(III) complexes. The Gd(III) conjugate complexes are endowed with a short water residence time (τ(M) ∼ 10-15 ns at 298 K) and a high abundance of the twisted-square antiprismatic diastereoisomer. They show a high (1)H relaxivity at high fields due to a convenient combination of the fast water exchange rate and the slow rate of the molecular tumbling given by their macromolecular nature. The (1)H relaxation enhancements per molecule of a contrast agent (CA) are very high reaching for a larger (GdL)(7)-β-CD conjugate ∼140 s(-1) mM(-1) and ∼100 s(-1) mM(-1) at 25 °C and magnetic fields 1.5 T and 3 T, respectively, which is the highest reported longitudinal relaxivity for kinetically stable contrast agents of an intermediate molecular mass (<10 kDa) with one water molecule in the first coordination sphere.
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Affiliation(s)
- Zuzana Kotková
- Department of Inorganic Chemistry, Charles University in Prague, Hlavova 2030, 128 40 Prague 2, Czech Republic
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50
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Langereis S, Geelen T, Grüll H, Strijkers GJ, Nicolay K. Paramagnetic liposomes for molecular MRI and MRI-guided drug delivery. NMR IN BIOMEDICINE 2013; 26:728-44. [PMID: 23703874 DOI: 10.1002/nbm.2971] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 04/04/2013] [Accepted: 04/05/2013] [Indexed: 05/07/2023]
Abstract
Liposomes are a versatile class of nanoparticles with tunable properties, and multiple liposomal drug formulations have been clinically approved for cancer treatment. In recent years, an extensive library of gadolinium (Gd)-containing liposomal MRI contrast agents has been developed for molecular and cellular imaging of disease-specific markers and for image-guided drug delivery. This review discusses the advances in the development and novel applications of paramagnetic liposomes in molecular and cellular imaging, and in image-guided drug delivery. A high targeting specificity has been achieved in vitro using ligand-conjugated paramagnetic liposomes. On targeting of internalizing cell receptors, the effective longitudinal relaxivity r1 of paramagnetic liposomes is modulated by compartmentalization effects. This provides unique opportunities to monitor the biological fate of liposomes. In vivo contrast-enhanced MRI studies with nontargeted liposomes have shown the extravasation of liposomes in diseases associated with endothelial dysfunction, such as tumors and myocardial infarction. The in vivo use of targeted paramagnetic liposomes has facilitated the specific imaging of pathophysiological processes, such as angiogenesis and inflammation. Paramagnetic liposomes loaded with drugs have been utilized for therapeutic interventions. MR image-guided drug delivery using such liposomes allows the visualization and quantification of local drug delivery.
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Affiliation(s)
- Sander Langereis
- Department of Minimally Invasive Healthcare, Philips Research Eindhoven, Eindhoven, the Netherlands
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