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Shmendel EV, Puchkov PA, Maslov MA. Design of Folate-Containing Liposomal Nucleic Acid Delivery Systems for Antitumor Therapy. Pharmaceutics 2023; 15:pharmaceutics15051400. [PMID: 37242642 DOI: 10.3390/pharmaceutics15051400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/28/2023] [Accepted: 05/02/2023] [Indexed: 05/28/2023] Open
Abstract
The delivery of therapeutic nucleic acids is a prospective method for the treatment of both inherited and acquired diseases including cancer. To achieve maximal delivery efficiency and selectivity, nucleic acids should be targeted to the cells of interest. In the case of cancer, such targeting may be provided through folate receptors overexpressed in many tumor cells. For this purpose, folic acid and its lipoconjugates are used. Compared to other targeting ligands, folic acid provides low immunogenicity, rapid tumor penetration, high affinity to a wide range of tumors, chemical stability, and easy production. Different delivery systems can utilize targeting by folate ligand including liposomal forms of anticancer drugs, viruses, and lipid and polymer nanoparticles. This review focuses on the liposomal gene delivery systems that provide targeted nucleic acid transport into tumor cells due to folate lipoconjugates. Moreover, important development step, such as rational design of lipoconjugates, folic acid content, size, and ζ-potential of lipoplexes are discussed.
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Affiliation(s)
- Elena V Shmendel
- Lomonosov Institute of Fine Chemical Technologies, MIREA-Russian Technological University, Vernadsky Ave. 86, 119571 Moscow, Russia
| | - Pavel A Puchkov
- Lomonosov Institute of Fine Chemical Technologies, MIREA-Russian Technological University, Vernadsky Ave. 86, 119571 Moscow, Russia
| | - Michael A Maslov
- Lomonosov Institute of Fine Chemical Technologies, MIREA-Russian Technological University, Vernadsky Ave. 86, 119571 Moscow, Russia
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Ashique S, Sandhu NK, Chawla V, Chawla PA. Targeted Drug Delivery: Trends and Perspectives. Curr Drug Deliv 2021; 18:1435-1455. [PMID: 34151759 DOI: 10.2174/1567201818666210609161301] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 03/03/2021] [Accepted: 04/07/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Due to various limitations in conventional drug delivery system, it is important to focus on the target-specific drug delivery system where we can deliver the drug without any degradation. Among various challenges faced by a formulation scientist, delivering the drug to its right site, in its right dose, is also an important aim. A focused drug transport aims to extend, localize, target and have a safe drug interaction with the diseased tissue. OBJECTIVE The aim of targeted drug delivery is to make the required amount of the drug available at its desired site of action. Drug targeting can be accomplished in a number ways that include enzyme mediation, pH-dependent release, use of special vehicles, receptor targeting among other mechanisms. Intelligently designed targeted drug delivery systems also offer the advantages of a low dose of the drug along with reduced side effects which ultimately improves patient compliance. Incidences of dose dumping and dosage form failure are negligible. A focused drug transport aims to have a safe drug interaction with the diseased tissue. CONCLUSION This review focuses on the available targeting techniques for delivery to the colon, brain and other sites of interest. Overall, the article should make an excellent read for the researchers in this area. Newer drug targets may be identified and exploited for successful drug targeting.
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Affiliation(s)
- Sumel Ashique
- Department of Pharmaceutics, ISF College of Pharmacy, Moga-142001, Punjab, India
| | - Navjot Kaur Sandhu
- Department of Pharmaceutical Analysis, ISF College of Pharmacy, Moga-142001, Punjab, India
| | - Viney Chawla
- University Institute of Pharmaceutical Sciences and Research, Baba Farid University of Health Sciences, Faridkot, Punjab, India
| | - Pooja A Chawla
- Department of Pharmaceutical Analysis, ISF College of Pharmacy, Moga-142001, Punjab, India
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3
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Magnetic Resonance Imaging Agents. Mol Imaging 2021. [DOI: 10.1016/b978-0-12-816386-3.00037-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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4
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Tircsó G, Tircsóné Benyó E, Garda Z, Singh J, Trokowski R, Brücher E, Sherry AD, Tóth É, Kovács Z. Comparison of the equilibrium, kinetic and water exchange properties of some metal ion-DOTA and DOTA-bis(amide) complexes. J Inorg Biochem 2020; 206:111042. [PMID: 32146160 DOI: 10.1016/j.jinorgbio.2020.111042] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 02/17/2020] [Accepted: 02/17/2020] [Indexed: 12/18/2022]
Abstract
The 1,7-diacetate-4,10-diacetamide substituted 1,4,7,10-tetraazacyclododecane structural unit is common to several responsive Magnetic Resonance Imaging (MRI) contrast agents (CAs). While some of these complexes (agents capable of sensing fluctuations in Zn2+, Ca2+ etc. ions) have already been tested in vivo, the detailed physico-chemical characterization of such ligands have not been fully studied. To fill this gap, we synthesized a representative member of this ligand family possessing two acetate and two n-butylacetamide pendant side-arms (DO2A2MnBu = 1,4,7,10-tetraazacyclodoecane-1,7-di(acetic acid)-4,10-di(N-butylacetamide)), and studied its complexation properties with some essential metal and a few lanthanide(III) (Ln(III)) ions. Our studies revealed that the ligand basicity, the stability of metal ion complexes, the trend of stability constants along the Ln(III) series, the formation rates of the Ln(III) complexes and the exchange rate of the bound water molecule in the Gd(III) complex fell between those of Ln(DOTA)- and Ln(DOTA-tetra(amide))3+ complexes (DOTA = 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid, DOTAM = 1,4,7,10-tetrakis(carbamoylmethyl)-1,4,7,10-tetraazacyclododecane). The only exception is the stability of Cu(DO2A2MnBu) which was found to be only slightly lower than that of Cu(DOTA)2- (log KCuL = 19.85 vs. 21.98). This is likely reflects exclusive coordination of the negatively charged acetate donor atoms to the Cu2+ ion forming an octahedral complex with the amides remaining uncoordinated. The only anomaly observed during the study was the rates of acid assisted dissociation of the Ln(III) complexes, which occur at a rate similar to those observed for the Ln(DOTA)- complexes. These data indicate that even though the Ln(DO2A2MnBu)+ complexes have lower thermodynamic stabilities, their kinetic inertness should be sufficient for in vivo use.
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Affiliation(s)
- Gyula Tircsó
- University of Debrecen, Department of Physical Chemistry, Egyetem tér 1, Debrecen H-4032, Hungary.
| | - Enikő Tircsóné Benyó
- University of Debrecen, Department of Physical Chemistry, Egyetem tér 1, Debrecen H-4032, Hungary
| | - Zoltán Garda
- University of Debrecen, Department of Physical Chemistry, Egyetem tér 1, Debrecen H-4032, Hungary
| | - Jaspal Singh
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, United States of America
| | - Robert Trokowski
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, United States of America; Department of Chemistry, University of Texas at Dallas, P.O. Box 830660, Richardson, TX 75083, United States of America
| | - Ernő Brücher
- University of Debrecen, Department of Physical Chemistry, Egyetem tér 1, Debrecen H-4032, Hungary
| | - A Dean Sherry
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, United States of America; Department of Chemistry, University of Texas at Dallas, P.O. Box 830660, Richardson, TX 75083, United States of America
| | - Éva Tóth
- Centre de Biophysique Moléculaire, CNRS, rue Charles Sadron, 45071 Orléans, Cedex 2, France
| | - Zoltán Kovács
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, United States of America.
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Baranyai Z, Tircsó G, Rösch F. The Use of the Macrocyclic Chelator DOTA in Radiochemical Separations. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900706] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zsolt Baranyai
- Bracco Research Centre Bracco Imaging spa Via Ribes 5 10010 Colleretto Giacosa (TO) Italy
| | - Gyula Tircsó
- Department of Physical Chemistry Faculty of Science and Technology University of Debrecen Egyetem tér 1 Debrecen 4032 Hungary
| | - Frank Rösch
- Institute of Nuclear Chemistry Johannes Gutenberg‐University of Mainz Fritz‐Strassmann‐Weg 2 55128 Mainz Germany
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Wahsner J, Gale EM, Rodríguez-Rodríguez A, Caravan P. Chemistry of MRI Contrast Agents: Current Challenges and New Frontiers. Chem Rev 2019; 119:957-1057. [PMID: 30350585 PMCID: PMC6516866 DOI: 10.1021/acs.chemrev.8b00363] [Citation(s) in RCA: 832] [Impact Index Per Article: 166.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Tens of millions of contrast-enhanced magnetic resonance imaging (MRI) exams are performed annually around the world. The contrast agents, which improve diagnostic accuracy, are almost exclusively small, hydrophilic gadolinium(III) based chelates. In recent years concerns have arisen surrounding the long-term safety of these compounds, and this has spurred research into alternatives. There has also been a push to develop new molecularly targeted contrast agents or agents that can sense pathological changes in the local environment. This comprehensive review describes the state of the art of clinically approved contrast agents, their mechanism of action, and factors influencing their safety. From there we describe different mechanisms of generating MR image contrast such as relaxation, chemical exchange saturation transfer, and direct detection and the types of molecules that are effective for these purposes. Next we describe efforts to make safer contrast agents either by increasing relaxivity, increasing resistance to metal ion release, or by moving to gadolinium(III)-free alternatives. Finally we survey approaches to make contrast agents more specific for pathology either by direct biochemical targeting or by the design of responsive or activatable contrast agents.
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Affiliation(s)
- Jessica Wahsner
- Athinoula A. Martinos Center for Biomedical Imaging and the Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Eric M. Gale
- Athinoula A. Martinos Center for Biomedical Imaging and the Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Aurora Rodríguez-Rodríguez
- Athinoula A. Martinos Center for Biomedical Imaging and the Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Peter Caravan
- Athinoula A. Martinos Center for Biomedical Imaging and the Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
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7
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Mathieu E, Sipos A, Demeyere E, Phipps D, Sakaveli D, Borbas KE. Lanthanide-based tools for the investigation of cellular environments. Chem Commun (Camb) 2018; 54:10021-10035. [PMID: 30101249 DOI: 10.1039/c8cc05271a] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Biological probes constructed from lanthanides can provide a variety of readout signals, such as the luminescence of Eu(iii), Tb(iii), Yb(iii), Sm(iii) and Dy(iii), and the proton relaxation enhancement of Gd(iii) and Eu(ii). For numerous applications the intracellular delivery of the lanthanide probe is essential. Here, we review the methods for the intracellular delivery of non-targeted complexes (i.e. where the overall complex structure enhances cellular uptake), as well as complexes attached to a targeting unit (i.e. to a peptide or a small molecule) that facilitates delivery. The cellular applications of lanthanide-based supramolecules (dendrimers, metal organic frameworks) are covered briefly. Throughout, we emphasize the techniques that can confirm the intracellular localization of the lanthanides and those that enable the determination of the fate of the probes once inside the cell. Finally, we highlight methods that have not yet been applied in the context of lanthanide-based probes, but have been successful in the intracellular delivery of other metal-based probes.
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Affiliation(s)
- Emilie Mathieu
- Department of Chemistry, Ångström Laboratory, Uppsala University, Box 523, 75120, Uppsala, Sweden.
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8
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Abstract
Understanding and exploiting molecular mechanisms in biology is central to chemical biology. In 20 years, chemical biology research has advanced from simple mechanistic studies using isolated biological macromolecules to molecular-level and nanomolecular-level mechanistic studies involving whole organisms. This review documents the best of my personal and collaborative academic research work that has made use of a solid organic chemistry and chemical biology approach toward nanomedicine, in which my focus has been on the design, creation and use of synthetic, self-assembly lipid-based nanoparticle technologies for the functional delivery of active pharmaceutical ingredients to target cells in vivo. This research is now leading to precision therapeutics approaches (PTAs) for the treatment of diseases that may define the future of nanomedicine.
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Facile Synthesis of Folic Acid-Modified Iron Oxide Nanoparticles for Targeted MR Imaging in Pulmonary Tumor Xenografts. Mol Imaging Biol 2017; 18:569-78. [PMID: 26620721 DOI: 10.1007/s11307-015-0918-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
PURPOSE The purpose of this study was to develop folic acid (FA)-modified iron oxide (Fe3O4) nanoparticles (NPs) for targeted magnetic resonance imaging (MRI) of H460 lung carcinoma cells. PROCEDURES Water-dispersible Fe3O4 NPs synthesized via a mild reduction method were conjugated with FA to generate FA-targeted Fe3O4 NPs. The specificity of FA-targeted Fe3O4 NPs to bind FA receptor was investigated in vitro by cellular uptake and cell MRI and in vivo by MRI of H460 tumors. RESULTS The formed NPs displayed good biocompatibility and ultrahigh r 2 relaxivity (440.01/mM/s). The targeting effect of the NPs to H460 cells was confirmed by in vitro cellular uptake and cell MRI. H460 tumors showed a significant reduction in T2 signal intensity at 0.85 h, which then recovered and returned to control at 2.35 h. CONCLUSIONS The results indicate that the prepared FA-targeted Fe3O4 NPs have potential to be used as T2 negative contrast agents in targeted MRI.
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10
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Wang H, Sun D, Liao H, Wang Y, Zhao S, Zhang Y, Lv G, Ma X, Liu Y, Sun G. Synthesis and characterization of a bimodal nanoparticle based on the host-guest self-assembly for targeted cellular imaging. Talanta 2017; 171:8-15. [PMID: 28551157 DOI: 10.1016/j.talanta.2017.04.046] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 04/17/2017] [Accepted: 04/18/2017] [Indexed: 12/12/2022]
Abstract
Multimodal imaging provides distinct advantages over traditional single modal imaging. The combined modalities of magnetic resonance imaging (MRI) and near-infrared imaging (NIR), in particular, provide a powerful tool for tumor diagnosis. In this study, a bimodal MRI and NIR self-assembled supramolecular nanoparticle was developed via the self-assembly of host-guest interactions between hyaluronic acid-β-cyclodextrin (HA-CD) and amantadine (Ad)-modified imaging agents (Gd-DOTA and NIR cyanine dye Cy7). The supramolecular HA-CD-GC nanoparticles (NPs) were characterized by transmission electron microscopy (TEM), Zeta potential, and dynamic light-scattering (DLS) experiments. The relaxivity and fluorescent properties of the NPs were also determined. HA-CD-GC NPs exhibited an enhanced relaxivity of 11.4mM-1S-1, which was three-fold higher than that of clinical Gd3+-chelated complex, for MRI imaging. Moreover, HA-CD-GC NPs displayed excellent fluorescence. In addition, HA-CD-GC NPs were internalized into tumor cells via HA-receptor CD44-mediated endocytosis. Therefore, the self-assembled HA-CD-GC NPs are effective targeted tumor cell imaging systems and have potential applications in cancer diagnosis and treatment.
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Affiliation(s)
- Huihui Wang
- Stem Cell Group, Scientific Research Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, China; University of the Chinese Academy of Science, Beijing 100049, China
| | - Dongsheng Sun
- Stem Cell Group, Scientific Research Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, China; University of the Chinese Academy of Science, Beijing 100049, China
| | - Han Liao
- Stem Cell Group, Scientific Research Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, China; University of the Chinese Academy of Science, Beijing 100049, China
| | - Yanfang Wang
- Stem Cell Group, Scientific Research Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, China; University of the Chinese Academy of Science, Beijing 100049, China
| | - Shan Zhao
- Stem Cell Group, Scientific Research Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, China; University of the Chinese Academy of Science, Beijing 100049, China
| | - Ying Zhang
- Stem Cell Group, Scientific Research Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, China
| | - Guojun Lv
- Stem Cell Group, Scientific Research Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, China
| | - Xiaojun Ma
- Laboratory of Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, China
| | - Yang Liu
- Stem Cell Group, Scientific Research Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, China.
| | - Guangwei Sun
- Stem Cell Group, Scientific Research Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, China.
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11
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Vistain LF, Rotz MW, Rathore R, Preslar AT, Meade TJ. Targeted delivery of gold nanoparticle contrast agents for reporting gene detection by magnetic resonance imaging. Chem Commun (Camb) 2016; 52:160-3. [PMID: 26505558 DOI: 10.1039/c5cc06565h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Detection of protein expression by MRI requires a high payload of Gd(III) per protein binding event. Presented here is a targeted AuDNA nanoparticle capable of delivering several hundred Gd(III) chelates to the HaloTag reporter protein. Incubating this particle with HaloTag-expressing cells produced a 9.4 contrast-to-noise ratio compared to non-expressing cells.
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Affiliation(s)
- Luke F Vistain
- Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA.
| | - Matthew W Rotz
- Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA.
| | - Richa Rathore
- Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA.
| | - Adam T Preslar
- Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA.
| | - Thomas J Meade
- Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA.
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12
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Boonstra MC, de Geus SWL, Prevoo HAJM, Hawinkels LJAC, van de Velde CJH, Kuppen PJK, Vahrmeijer AL, Sier CFM. Selecting Targets for Tumor Imaging: An Overview of Cancer-Associated Membrane Proteins. BIOMARKERS IN CANCER 2016; 8:119-133. [PMID: 27721658 PMCID: PMC5040425 DOI: 10.4137/bic.s38542] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 09/05/2016] [Accepted: 09/06/2016] [Indexed: 12/30/2022]
Abstract
Tumor targeting is a booming business: The global therapeutic monoclonal antibody market accounted for more than $78 billion in 2012 and is expanding exponentially. Tumors can be targeted with an extensive arsenal of monoclonal antibodies, ligand proteins, peptides, RNAs, and small molecules. In addition to therapeutic targeting, some of these compounds can also be applied for tumor visualization before or during surgery, after conjugation with radionuclides and/or near-infrared fluorescent dyes. The majority of these tumor-targeting compounds are directed against cell membrane-bound proteins. Various categories of targetable membrane-bound proteins, such as anchoring proteins, receptors, enzymes, and transporter proteins, exist. The functions and biological characteristics of these proteins determine their location and distribution on the cell membrane, making them more, or less, accessible, and therefore, it is important to understand these features. In this review, we evaluate the characteristics of cancer-associated membrane proteins and discuss their overall usability for cancer targeting, especially focusing on imaging applications.
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Affiliation(s)
- Martin C Boonstra
- Department of Surgery, Leiden University Medical Center, Leiden, the Netherlands
| | - Susanna W L de Geus
- Department of Surgery, Leiden University Medical Center, Leiden, the Netherlands
| | | | - Lukas J A C Hawinkels
- Department of Gastroenterology, Leiden University Medical Center, Leiden, the Netherlands
| | | | - Peter J K Kuppen
- Department of Surgery, Leiden University Medical Center, Leiden, the Netherlands.; Antibodies for Research Applications BV, Gouda, the Netherlands
| | | | - Cornelis F M Sier
- Department of Surgery, Leiden University Medical Center, Leiden, the Netherlands.; Antibodies for Research Applications BV, Gouda, the Netherlands
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Reprogramming of hepatic fat accumulation and 'browning' of adipose tissue by the short-chain fatty acid acetate. Int J Obes (Lond) 2016; 40:955-63. [PMID: 26975441 DOI: 10.1038/ijo.2016.23] [Citation(s) in RCA: 143] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 11/30/2015] [Accepted: 12/28/2015] [Indexed: 12/17/2022]
Abstract
BACKGROUND/OBJECTIVES Short-chain fatty acids, produced by microbiome fermentation of carbohydrates, have been linked to a reduction in appetite, body weight and adiposity. However, determining the contribution of central and peripheral mechanisms to these effects has not been possible. SUBJECTS/METHODS C57BL/6 mice fed with either normal or high-fat diet were treated with nanoparticle-delivered acetate, and the effects on metabolism were investigated. RESULTS In the liver, acetate decreased lipid accumulation and improved hepatic function, as well as increasing mitochondrial efficiency. In white adipose tissue, it inhibited lipolysis and induced 'browning', increasing thermogenic capacity that led to a reduction in body adiposity. CONCLUSIONS This study provides novel insights into the peripheral mechanism of action of acetate, independent of central action, including 'browning' and enhancement of hepatic mitochondrial function.
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14
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Sim N, Parker D. Critical design issues in the targeted molecular imaging of cell surface receptors. Chem Soc Rev 2015; 44:2122-34. [DOI: 10.1039/c4cs00364k] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The molecular imaging of cell-surface receptors draws closer to reality.
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Affiliation(s)
- Neil Sim
- Department of Chemistry
- Durham University
- Durham DH1 3LE
- UK
| | - David Parker
- Department of Chemistry
- Durham University
- Durham DH1 3LE
- UK
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15
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Bai LX, Ding L, Jiang SW, Kang HJ, Gao CF, Chen C, Zhou Q, Wang JT. Down-regulation of FRα Inhibits Proliferation and Promotes Apoptosis of Cervical Cancer Cells in Vitro. Asian Pac J Cancer Prev 2014; 15:5667-72. [DOI: 10.7314/apjcp.2014.15.14.5667] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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16
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Gottschalk S, Engelmann J, Rolla GA, Botta M, Parker D, Mishra A. Comparative in vitro studies of MR imaging probes for metabotropic glutamate subtype-5 receptor targeting. Org Biomol Chem 2014; 11:6131-41. [PMID: 23925571 DOI: 10.1039/c3ob41297k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A series of magnetic resonance imaging probes has been evaluated to target selectively the metabotropic glutamate receptor subtype 5 (mGluR5). Eight imaging probes based on the contrast agent [Gd·DOTA], previously derived by linking it to a series of specific and selective mGluR5 antagonists, have been extensively tested for their functionality in vitro. The Nuclear Magnetic Relaxation Dispersion (NMRD) profiles of selected probes have been examined via field-cycling relaxometry in the presence and absence of a model protein. The properties of the targeted contrast agents were evaluated using a primary astrocyte model, as these cells mimic the in vivo situation effectively. The probes were non-toxic (up to 200 μM) to these mGluR5 expressing primary cells. Cellular proton longitudinal relaxation rate enhancements of up to 35% were observed by MRI at 200 μM of probe concentration. The antagonistic effect of all compounds was tested using an assay measuring changes of intracellular calcium levels. Furthermore, treatment at two different temperatures (4 °C vs. 37 °C) and of an mGluR5-negative cell line provided further insight into the selectivity and specificity of these probes towards cell surface mGluR5. Finally, two out of eight probes demonstrated an antagonistic effect as well as significant enhancement of receptor mediated cellular relaxation rates, strongly suggesting that they would be viable probes for the mapping of mGluR5 by MRI in vivo.
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Affiliation(s)
- Sven Gottschalk
- High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Spemannstrasse 41, Tuebingen, D-72076, Germany.
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Wu H, Zhao H, Song X, Li S, Ma X, Tan M. Self-assembly-induced near-infrared fluorescent nanoprobes for effective tumor molecular imaging. J Mater Chem B 2014; 2:5302-5308. [DOI: 10.1039/c4tb00761a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Self-assembly-induced near-infrared fluorescent nanoprobes exhibiting spontaneous lattices were prepared and evaluated for in vitro and in vivo tumor molecular imaging.
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Affiliation(s)
- Hao Wu
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023, China
- University of the Chinese Academy of Sciences
| | - Haidong Zhao
- The Second Affiliated Hospital of Dalian Medical University
- Dalian 116023, China
| | - Xiaojie Song
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023, China
- University of the Chinese Academy of Sciences
| | - Shen Li
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023, China
- University of the Chinese Academy of Sciences
| | - 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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Wu X, Lindner D, Yu GP, Brady-Kalnay S, Lu ZR. MR molecular imaging of prostate cancer with a small molecular CLT1 peptide targeted contrast agent. J Vis Exp 2013. [PMID: 24056726 DOI: 10.3791/50565] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Tumor extracellular matrix has abundance of cancer related proteins that can be used as biomarkers for cancer molecular imaging. In this work, we demonstrated effective MR cancer molecular imaging with a small molecular peptide targeted Gd-DOTA monoamide complex as a targeted MRI contrast agent specific to clotted plasma proteins in tumor stroma. We performed the experiment of evaluating the effectiveness of the agent for non-invasive detection of prostate tumor with MRI in a mouse orthotopic PC-3 prostate cancer model. The targeted contrast agent was effective to produce significant tumor contrast enhancement at a low dose of 0.03 mmol Gd/kg. The peptide targeted MRI contrast agent is promising for MR molecular imaging of prostate tumor.
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Affiliation(s)
- Xueming Wu
- Department of Biomedical Engineering, Case Western Reserve University
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19
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Vargas HA, Barrett T, Sala E. MRI of ovarian masses. J Magn Reson Imaging 2013; 37:265-81. [PMID: 23355430 DOI: 10.1002/jmri.23721] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Accepted: 05/02/2012] [Indexed: 11/10/2022] Open
Abstract
MRI provides exquisite views of the pelvic anatomy through its high spatial resolution and tissue contrast, and as such plays a key role in the work up of ovarian lesions, identifying features that distinguish benign and malignant lesions. In the case of primary tumors it enables local staging and detection of metastatic disease to help guide management options such as complex surgery or the consideration of neoadjuvant chemotherapy. Functional MRI techniques such as diffusion-weighted MRI (DW-MRI), dynamic contrast-enhanced MRI (DCE-MRI) and tumor-selective molecular imaging are currently being evaluated as possible predictive and prognostic biomarkers in the context of ovarian malignancy, and may play a larger role in routine clinical practice in the future. Herein we provide an overview of the conventional and advanced MRI techniques used to characterize ovarian masses and of the role that MR plays in the staging, treatment selection and follow up of patients with ovarian cancer.
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Affiliation(s)
- Hebert Alberto Vargas
- Department of Radiology, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA.
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20
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Pathway of cytotoxicity induced by folic acid modified selenium nanoparticles in MCF-7 cells. Appl Microbiol Biotechnol 2012; 97:1051-62. [PMID: 22945264 DOI: 10.1007/s00253-012-4359-7] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 08/07/2012] [Accepted: 08/09/2012] [Indexed: 12/14/2022]
Abstract
Selenium nanoparticles (Se NPs) have been recognized as promising materials for biomedical applications. To prepare Se NPs which contained cancer targeting methods and to clarify the cellular localization and cytotoxicity mechanisms of these Se NPs against cancer cells, folic acid protected/modified selenium nanoparticles (FA-Se NPs) were first prepared by a one-step method. Some morphologic and spectroscopic methods were obtained to prove the successfully formation of FA-Se NPs while free folate competitive inhibition assay, microscope, and several biological methods were used to determine the in vitro uptake, subcellular localization, and cytotoxicity mechanism of FA-Se NPs in MCF-7 cells. The results indicated that the 70-nm FA-Se NPs were internalized by MCF-7 cells through folate receptor-mediated endocytosis and targeted to mitochondria located regions through endocytic vesicles transporting. Then, the FA-Se NPs entered into mitochondria; triggered the mitochondria-dependent apoptosis of MCF-7 cells which involved oxidative stress, Ca(2)+ stress changes, and mitochondrial dysfunction; and finally caused the damage of mitochondria. FA-Se NPs released from broken mitochondria were transported into nucleus and further into nucleolus which then induced MCF-7 cell cycle arrest. In addition, FA-Se NPs could induce cytoskeleton disorganization and induce MCF-7 cell membrane morphology alterations. These results collectively suggested that FA-Se NPs could be served as potential therapeutic agents and organelle-targeted drug carriers in cancer therapy.
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21
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Vithanarachchi SM, Allen MJ. Strategies for Target-Specific Contrast Agents for Magnetic Resonance Imaging. ACTA ACUST UNITED AC 2012; 1:12-25. [PMID: 23316452 DOI: 10.2174/2211555211201010012] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review describes recent research efforts focused on increasing the specificity of contrast agents for proton magnetic resonance imaging (MRI). Contrast agents play an indispensable role in MRI by enhancing the inherent contrast of images; however, the non-specific nature of current clinical contrast agents limits their usefulness. This limitation can be addressed by conjugating contrast agents or contrast-agent-loaded carriers-including polymers, nanoparticles, dendrimers, and liposomes-to molecules that bind to biological sites of interest. An alternative approach to conjugation is synthetically mimicking biological structures with metal complexes that are also contrast agents. In this review, we describe the advantages and limitations of these two targeting strategies with respect to translation from in vitro to in vivo imaging while focusing on advances from the last ten years.
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22
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Amoozegar CB, Wang T, Bouchard MB, McCaslin AFH, Blaner WS, Levenson RM, Hillman EMC. Dynamic contrast-enhanced optical imaging of in vivo organ function. JOURNAL OF BIOMEDICAL OPTICS 2012; 17:96003-1. [PMID: 23085904 PMCID: PMC3434471 DOI: 10.1117/1.jbo.17.9.096003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Conventional approaches to optical small animal molecular imaging suffer from poor resolution, limited sensitivity, and unreliable quantitation, often reducing their utility in practice. We previously demonstrated that the in vivo dynamics of an injected contrast agent could be exploited to provide high-contrast anatomical registration, owing to the temporal differences in each organ's response to the circulating fluorophore. This study extends this approach to explore whether dynamic contrast-enhanced optical imaging (DyCE) can allow noninvasive, in vivo assessment of organ function by quantifying the differing cellular uptake or wash-out dynamics of an agent in healthy and damaged organs. Specifically, we used DyCE to visualize and measure the organ-specific uptake dynamics of indocyanine green before and after induction of transient liver damage. DyCE imaging was performed longitudinally over nine days, and blood samples collected at each imaging session were analyzed for alanine aminotransferase (ALT), a liver enzyme assessed clinically as a measure of liver damage. We show that changes in DyCE-derived dynamics of liver and kidney dye uptake caused by liver damage correlate linearly with ALT concentrations, with an r2 value of 0.91. Our results demonstrate that DyCE can provide quantitative, in vivo, longitudinal measures of organ function with inexpensive and simple data acquisition.
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Affiliation(s)
- Cyrus B Amoozegar
- Columbia University, Department of Biomedical Engineering and Radiology, Laboratory for Functional Optical Imaging, 351 Engineering Terrace, 1210 Amsterdam Avenue, New York, New York 10027, USA.
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Wu X, Burden-Gulley SM, Yu GP, Tan M, Lindner D, Brady-Kalnay SM, Lu ZR. Synthesis and evaluation of a peptide targeted small molecular Gd-DOTA monoamide conjugate for MR molecular imaging of prostate cancer. Bioconjug Chem 2012; 23:1548-56. [PMID: 22812444 DOI: 10.1021/bc300009t] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Tumor extracellular matrix has an abundance of cancer related proteins that can be used as biomarkers for cancer molecular imaging. Innovative design and development of safe and effective targeted contrast agents to these biomarkers would allow effective MR cancer molecular imaging with high spatial resolution. In this study, we synthesized a low molecular weight CLT1 peptide targeted Gd(III) chelate CLT1-dL-(Gd-DOTA)(4) specific to clotted plasma proteins in tumor stroma for cancer MR molecular imaging. CLT1-dL-(Gd-DOTA)(4) was synthesized by conjugating four Gd-DOTA monoamide chelates to a CLT1 peptide via generation 1 lysine dendrimer. The T(1) relaxivity of CLT1-dL-(Gd-DOTA)(4) was 40.4 mM(-1) s(-1) per molecule (10.1 mM(-1) s(-1) per Gd) at 37 °C and 1.5 T. Fluorescence imaging showed high binding specificity of CLT1 to orthotopic PC3 prostate tumor in mice. The contrast agent resulted in improved tumor contrast enhancement in male athymic nude mice bearing orthotopic PC3 prostate tumor xenograft at a dose of 0.03 mmol Gd/kg. The peptide targeted MRI contrast agent is promising for high-resolution MR molecular imaging of prostate tumor.
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Affiliation(s)
- Xueming Wu
- Department of Biomedical Engineering, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
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Elemental imaging of MRI contrast agents: benchmarking of LA-ICP-MS to MRI. Anal Bioanal Chem 2012; 403:1641-9. [PMID: 22526651 DOI: 10.1007/s00216-012-5973-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Revised: 03/20/2012] [Accepted: 03/26/2012] [Indexed: 10/28/2022]
Abstract
Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) has been used to map the spatial distribution of magnetic resonance imaging (MRI) contrast agents (Gd-based) in histological sections in order to explore synergies with in vivo MRI. Images from respective techniques are presented for two separate studies namely (1) convection enhanced delivery of a Gd nanocomplex (developmental therapeutic) into rat brain and (2) convection enhanced delivery, with co-infusion of Magnevist (commercial Gd contrast agent) and Carboplatin (chemotherapy drug), into pig brain. The LA technique was shown to be a powerful compliment to MRI not only in offering improved sensitivity, spatial resolution and signal quantitation but also in giving added value regarding the fate of administered agents (Gd and Pt agents). Furthermore simultaneous measurement of Fe enabled assignment of an anomalous contrast enhancement region in rat brain to haemorrhage at the infusion site.
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25
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Matusch A, Fenn LS, Depboylu C, Klietz M, Strohmer S, McLean JA, Becker JS. Combined elemental and biomolecular mass spectrometry imaging for probing the inventory of tissue at a micrometer scale. Anal Chem 2012; 84:3170-8. [PMID: 22413784 DOI: 10.1021/ac203112c] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Several complementary mass spectrometric imaging techniques allow mapping of various analytes within biological tissue sections. Laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) quantitatively detects elements and isotopes with very high sensitivity and a particularly high dynamical range. Matrix-assisted laser desorption/ionization ion mobility mass spectrometry (MALDI-IM-MS) allows a pixel-by-pixel classification and identification of biomolecules. In order to dispose of the healthy hemisphere as an internal calibrant in addition to routinely used external standards, adjacent brain sections of mice with a unilateral 6-OHDA lesion of the medial forebrain bundle were chosen as exemplary samples. We demonstrate a comprehensive way of data acquisition and analysis by coregistering mass spectrometric data on photomicrographs as common reference space and thus providing trimodal spatial information. Registering subsequent planar element maps yielded continuous 3-dimensional data sets. Furthermore, we introduce a correction of MSI data for variable slice thickness applicable to all MSI techniques. In the present case, we observed increased concentrations of iron, manganese, and copper in the lesioned substantia nigra while monounsaturated lipid levels were decreased in the identical region of interest. Our techniques provide new insights into the intricate spatial relationship of morphology and chemistry within tissue.
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Affiliation(s)
- Andreas Matusch
- Department of Neurology, Philipps University, Marburg, Germany
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