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López-Iglesias C, Markovina A, Nirmalananthan-Budau N, Resch-Genger U, Klinger D. Optically monitoring the microenvironment of a hydrophobic cargo in amphiphilic nanogels: influence of network composition on loading and release. NANOSCALE 2024. [PMID: 38656329 DOI: 10.1039/d4nr00051j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Amphiphilic nanogels (ANGs) are promising carriers for hydrophobic cargos such as drugs, dyes, and catalysts. Loading content and release kinetics of these compounds are controlled by type and number of hydrophobic groups in the amphiphilic copolymer network. Thus, understanding the interactions between cargo and colloidal carrier is mandatory for a tailor-made and cargo-specific ANG design. To systematically explore the influence of the network composition on these interactions, we prepared a set of ANGs of different amphiphilicity and loaded these ANGs with varying concentrations of the solvatochromic dye Nile Red (NR). Here, NR acts as a hydrophobic model cargo to optically probe the polarity of its microenvironment. Analysis of the NR emission spectra as well as measurements of the fluorescence quantum yields and decay kinetics revealed a decrease in the polarity of the NR microenvironment with increasing hydrophobicity of the hydrophobic groups in the ANG network and dye-dye interactions at higher loading concentrations. At low NR concentrations, the hydrophobic cargo NR is encapsulated in the hydrophobic domains. Increasing NR concentrations resulted in probe molecules located in a more hydrophilic environment, i.e., at the nanodomain border, and favored dye-dye interactions and NR aggregation. These results correlate well with release experiments, indicating first NR release from more hydrophilic network locations. Overall, our findings demonstrate the importance to understand carrier-drug interactions for efficient loading and controlled release profiles in amphiphilic nanogels.
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Affiliation(s)
- Clara López-Iglesias
- Institute of Pharmacy, Freie Universität Berlin, Königin-Luise Straße 2-4, 14195 Berlin, Germany.
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, I+D Farma group (GI-1645), Faculty of Pharmacy, Instituto de Materiales (iMATUS) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, Campus Vida s/n, 15782 Santiago de Compostela, Spain
| | - Ante Markovina
- Institute of Pharmacy, Freie Universität Berlin, Königin-Luise Straße 2-4, 14195 Berlin, Germany.
| | - Nithiya Nirmalananthan-Budau
- Division Biophotonics, Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter Str. 11, 12489 Berlin, Germany.
| | - Ute Resch-Genger
- Division Biophotonics, Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter Str. 11, 12489 Berlin, Germany.
| | - Daniel Klinger
- Institute of Pharmacy, Freie Universität Berlin, Königin-Luise Straße 2-4, 14195 Berlin, Germany.
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2
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Michel L, Auvray M, Askenatzis L, Badet-Denisot MA, Bignon J, Durand P, Mahuteau-Betzer F, Chevalier A. Visualization of an Endogenous Mitochondrial Azoreductase Activity under Normoxic Conditions Using a Naphthalimide Azo-Based Fluorogenic Probe. Anal Chem 2024; 96:1774-1780. [PMID: 38230524 DOI: 10.1021/acs.analchem.3c05030] [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: 01/18/2024]
Abstract
In this paper, we demonstrate the existence of an endogenous mitochondrial azoreductase (AzoR) activity that can induce the cleavage of N═N double bonds of azobenzene compounds under normoxic conditions. To this end, 100% OFF-ON azo-based fluorogenic probes derived from 4-amino-1,8-naphthalimide fluorophores were synthesized and evaluated. The in vitro study conducted with other endogenous reducing agents of the cell, including reductases, demonstrated both the efficacy and the selectivity of the probe for AzoR. Confocal experiments with the probe revealed an AzoR activity in the mitochondria of living cells under normal oxygenation conditions, and we were able to demonstrate that this endogenous AzoR activity appears to be expressed at different levels across different cell lines. This discovery provides crucial information for our understanding of the biochemical processes occurring within the mitochondria. It thus contributes to a better understanding of its function, which is implicated in numerous pathologies.
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Affiliation(s)
- Laurane Michel
- CNRS, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Marie Auvray
- CNRS UMR 9187, Inserm U1196 Chemistry and Modeling for the Biology of Cancer Institut Curie,Université PSL, 91400 Orsay, France
- CNRS UMR 9187, Inserm U1196 Chemistry and Modeling for the Biology of Cancer, Université Paris-Saclay, 91400 Orsay, France
| | - Laurie Askenatzis
- CNRS, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Marie-Ange Badet-Denisot
- CNRS, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Jérôme Bignon
- CNRS, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Philippe Durand
- CNRS, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Florence Mahuteau-Betzer
- CNRS UMR 9187, Inserm U1196 Chemistry and Modeling for the Biology of Cancer Institut Curie,Université PSL, 91400 Orsay, France
- CNRS UMR 9187, Inserm U1196 Chemistry and Modeling for the Biology of Cancer, Université Paris-Saclay, 91400 Orsay, France
| | - Arnaud Chevalier
- CNRS, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, UPR 2301, 91198 Gif-sur-Yvette, France
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3
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Zhang Y, Luo Z, Guo L, Zhang H, Su T, Tan Z, Ren Q, Zhang C, Fu Y, Xing R, Guo R, Shi X, Guo H, Liu Y, Wang L. Discovery of novel tumor-targeted near-infrared probes with 6-substituted pyrrolo[2,3-d]pyrimidines as targeting ligands. Eur J Med Chem 2023; 262:115914. [PMID: 37925763 DOI: 10.1016/j.ejmech.2023.115914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/19/2023] [Accepted: 10/24/2023] [Indexed: 11/07/2023]
Abstract
Since the overexpression of folate receptors (FRs) in certain types of cancers, a variety of FR-targeted fluorescent probes for tumor detection have been developed. However, the reported probes almost all have the same targeting ligand of folic acid with various fluorophores and/or linkers. In the present study, a series of novel tumor-targeted near-infrared (NIR) molecular fluorescent probes were designed and synthesized based on previously reported 6-substituted pyrrolo[2,3-d]pyrimidine antifolates. All newly synthesized probes showed specific FR binding in vitro, whereas GT-NIR-4 and GT-NIR-5 with a benzene and a thiophene ring, respectively, on the side chain of pyrrolo[2,3-d]pyrimidine exhibited better FR binding affinity than that of GT-NIR-6 with folic acid as targeting ligand. GT-NIR-4 also showed high tumor uptake in KB tumor-bearing mice with good pharmacokinetic properties and biological safety. This work demonstrates the first attempt to replace folic acid with antifolates as targeting ligands for tumor-targeted NIR probes.
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Affiliation(s)
- Yining Zhang
- Department of Medicinal Chemistry, School of Pharmacy, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, 050017, PR China
| | - Zijun Luo
- Department of Medicinal Chemistry, School of Pharmacy, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, 050017, PR China
| | - Lixiao Guo
- Department of Medicinal Chemistry, School of Pharmacy, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, 050017, PR China
| | - Haofeng Zhang
- Department of Medicinal Chemistry, School of Pharmacy, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, 050017, PR China
| | - Tongdan Su
- Department of Medicinal Chemistry, School of Pharmacy, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, 050017, PR China
| | - Zhenzhen Tan
- Department of Toxicology, School of Public Health, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, 050017, PR China
| | - Qian Ren
- Department of Toxicology, School of Public Health, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, 050017, PR China
| | - Can Zhang
- Department of Toxicology, School of Public Health, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, 050017, PR China
| | - Yan Fu
- Core Facilities and Centers, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, 050017, PR China
| | - Ruijuan Xing
- Department of Medicinal Chemistry, School of Pharmacy, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, 050017, PR China
| | - Ran Guo
- Department of Medicinal Chemistry, School of Pharmacy, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, 050017, PR China
| | - Xiaowei Shi
- Department of Medicinal Chemistry, School of Pharmacy, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, 050017, PR China
| | - Huicai Guo
- Department of Toxicology, School of Public Health, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, 050017, PR China
| | - Yi Liu
- Department of Toxicology, School of Public Health, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, 050017, PR China; Hebei Key Laboratory of Environment and Human Health, Shijiazhuang, 050017, PR China.
| | - Lei Wang
- Department of Medicinal Chemistry, School of Pharmacy, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, 050017, PR China; Hebei Key Laboratory of Innovative Drug Research and Evaluation, Shijiazhuang, 050017, PR China.
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4
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Rethi L, Rethi L, Liu CH, Hyun TV, Chen CH, Chuang EY. Fortification of Iron Oxide as Sustainable Nanoparticles: An Amalgamation with Magnetic/Photo Responsive Cancer Therapies. Int J Nanomedicine 2023; 18:5607-5623. [PMID: 37814664 PMCID: PMC10560484 DOI: 10.2147/ijn.s404394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 05/10/2023] [Indexed: 10/11/2023] Open
Abstract
Due to their non-toxic function in biological systems, Iron oxide NPs (IO-NPs) are very attractive in biomedical applications. The magnetic properties of IO-NPs enable a variety of biomedical applications. We evaluated the usage of IO-NPs for anticancer effects. This paper lists the applications of IO-NPs in general and the clinical targeting of IO-NPs. The application of IONPs along with photothermal therapy (PTT), photodynamic therapy (PDT), and magnetic hyperthermia therapy (MHT) is highlighted in this review's explanation for cancer treatment strategies. The review's study shows that IO-NPs play a beneficial role in biological activity because of their biocompatibility, biodegradability, simplicity of production, and hybrid NPs forms with IO-NPs. In this review, we have briefly discussed cancer therapy and hyperthermia and NPs used in PTT, PDT, and MHT. IO-NPs have a particular effect on cancer therapy when combined with PTT, PDT, and MHT were the key topics of the review and were covered in depth. The IO-NPs formulations may be uniquely specialized in cancer treatments with PTT, PDT, and MHT, according to this review investigation.
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Affiliation(s)
- Lekha Rethi
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
- International PhD Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
| | - Lekshmi Rethi
- International PhD Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
| | - Chia-Hung Liu
- Department of Urology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
| | - Tin Van Hyun
- International PhD Program in Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
- Department of Interventional Cardiology, Thong Nhat Hospital, Ho Chi Minh City, 700000, Vietnam
| | - Chih-Hwa Chen
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
- International PhD Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
- Department of Orthopedics, Taipei Medical University – Shuang Ho Hospital, New Taipei City, Taiwan
| | - Er-Yuan Chuang
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
- International PhD Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
- Cell Physiology and Molecular Image Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
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5
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Shin JS, Li S. DNA-Immobilized Fluorescent Polystyrene Nanoparticles as Probes with Tunable Detection Limits. ACS OMEGA 2022; 7:48310-48319. [PMID: 36591202 PMCID: PMC9798753 DOI: 10.1021/acsomega.2c06498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
DNA-immobilized nanoparticle probes show high target specificity; thus, they are employed in various bioengineering and biomedicine applications. When the nanoparticles employed are dye-loaded polymer particles, the resulting probes have the additional benefit of biocompatibility and versatile surface properties. In this study, we construct DNA-immobilized fluorescent polystyrene (PS) nanoparticles through controlled surface reactions. PS nanoparticles with surface carboxyl groups are utilized, and amine-functionalized dye molecules and capture DNAs are covalently immobilized via a one-pot reaction. We show that the surface chemistry employed allows for quantitative control over the number of fluorescent dyes and DNA strands immobilized on the PS nanoparticle surfaces. The nanoparticles thus prepared are then used for DNA detection. The off state of the nanoprobe is achieved by hybridizing quencher-functionalized DNAs (Q-DNAs) to the capture DNAs immobilized on nanoparticle surfaces. Target-DNAs (T-DNAs) are detected by the displacement of the prehybridized Q-DNAs. The nanoprobes show successful detection of T-DNAs with high sequence specificity and long-term stability. They also show excellent detection sensitivity, and the detection limit can be tuned by adjusting the capture DNA-to-dye ratio.
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6
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Kurutos A, Citterio D. Synthesis and spectral properties of near-infrared cyanine dyes showing enhanced Stokes shift: A paradigm of ICT dipolar state polymethine chromophoric systems. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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Exner RM, Cortezon‐Tamarit F, Pascu SI. Explorations into the Effect of meso-Substituents in Tricarbocyanine Dyes: A Path to Diverse Biomolecular Probes and Materials. Angew Chem Int Ed Engl 2021; 60:6230-6241. [PMID: 32959963 PMCID: PMC7985877 DOI: 10.1002/anie.202008075] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 07/22/2020] [Indexed: 12/13/2022]
Abstract
Polymethine cyanine dyes have been widely recognized as promising chemical tools for a range of life science and biomedical applications, such as fluorescent staining of DNA and proteins in gel electrophoresis, fluorescence guided surgery, or as ratiometric probes for probing biochemical pathways. The photophysical properties of such dyes can be tuned through the synthetic modification of the conjugated backbone, for example, by altering aromatic cores or by varying the length of the conjugated polymethine chain. Alternative routes to shaping the absorption, emission, and photostability of dyes of this family are centered around the chemical modifications on the polymethine chain. This Minireview aims to discuss strategies for the introduction of substituents in the meso-position, their effect on the photophysical properties of these dyes and some structure-activity correlations which could help overcome common limitations in the state of the art in the synthesis.
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Affiliation(s)
- Rüdiger M. Exner
- Department of ChemistryUniversity of BathClaverton DownBathBA2 7AYUK
| | | | - Sofia I. Pascu
- Department of ChemistryUniversity of BathClaverton DownBathBA2 7AYUK
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8
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Achterberg FB, Deken MM, Meijer RPJ, Mieog JSD, Burggraaf J, van de Velde CJH, Swijnenburg RJ, Vahrmeijer AL. Clinical translation and implementation of optical imaging agents for precision image-guided cancer surgery. Eur J Nucl Med Mol Imaging 2021; 48:332-339. [PMID: 32783112 PMCID: PMC7835299 DOI: 10.1007/s00259-020-04970-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 07/22/2020] [Indexed: 02/07/2023]
Abstract
INTRODUCTION The field of tumor-specific fluorescence-guided surgery has seen a significant increase in the development of novel tumor-targeted imaging agents. Studying patient benefit using intraoperative fluorescence-guided imaging for cancer surgery is the final step needed for implementation in standard treatment protocols. Translation into phase III clinical trials can be challenging and time consuming. Recent studies have helped to identify certain waypoints in this transition phase between studying imaging agent efficacy (phase I-II) and proving patient benefit (phase III). TRIAL INITIATION Performing these trials outside centers of expertise, thus involving motivated clinicians, training them, and providing feedback on data quality, increases the translatability of imaging agents and the surgical technique. Furthermore, timely formation of a trial team which oversees the translational process is vital. They are responsible for establishing an imaging framework (camera system, imaging protocol, surgical workflow) and clinical framework (disease stage, procedure type, clinical research question) in which the trial is executed. Providing participating clinicians with well-defined protocols with the aim to answer clinically relevant research questions within the context of care is the pinnacle in gathering reliable trial data. OUTLOOK If all these aspects are taken into consideration, tumor-specific fluorescence-guided surgery is expected be of significant value when integrated into the diagnostic work-up, surgical procedure, and follow-up of cancer patients. It is only by involving and collaborating with all stakeholders involved in this process that successful clinical translation can occur. AIM Here, we discuss the challenges faced during this important translational phase and present potential solutions to enable final clinical translation and implementation of imaging agents for image-guided cancer surgery.
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Affiliation(s)
- F B Achterberg
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - M M Deken
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - R P J Meijer
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - J S D Mieog
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - J Burggraaf
- Centre for Human Drug Research (CHDR), Leiden, The Netherlands
| | - C J H van de Velde
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - R J Swijnenburg
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - A L Vahrmeijer
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands.
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10
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Exner RM, Cortezon‐Tamarit F, Pascu SI. Explorations into the Effect of
meso
‐Substituents in Tricarbocyanine Dyes: A Path to Diverse Biomolecular Probes and Materials. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008075] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Rüdiger M. Exner
- Department of Chemistry University of Bath Claverton Down Bath BA2 7AY UK
| | | | - Sofia I. Pascu
- Department of Chemistry University of Bath Claverton Down Bath BA2 7AY UK
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11
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Aristova D, Volynets G, Chernii S, Losytskyy M, Balanda A, Slominskii Y, Mokhir A, Yarmoluk S, Kovalska V. Far-red pentamethine cyanine dyes as fluorescent probes for the detection of serum albumins. ROYAL SOCIETY OPEN SCIENCE 2020; 7:200453. [PMID: 32874638 PMCID: PMC7428273 DOI: 10.1098/rsos.200453] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 05/21/2020] [Indexed: 06/11/2023]
Abstract
Benzothiazole based cyanine dyes with bridged groups in the pentamethine chain were studied as potential far-red fluorescent probes for protein detection. Spectral-luminescent properties were characterized for unbound dyes and in the presence of serum albumins (bovine (BSA), human (HSA), equine (ESA)), and globular proteins (β-lactoglobulin, ovalbumin). We have observed that the addition of albumins leads to a significant increase in dyes fluorescence intensity. However, the fluorescent response of dyes in the presence of other globular proteins was notably lower. The value of fluorescence quantum yield for dye bearing a sulfonate group complexed with HSA amounted to 42% compared with 0.2% for the free dye. The detection limit of HSA by this dye was greater than 0.004 mg ml-1 which indicates the high sensitivity of dye to low HSA concentrations. Modelling of structure of the dyes complexes with albumin molecules was performed by molecular docking. According to these data, dyes could bind to up to five sites on the HSA molecule; the most preferable are the haemin-binding site in subdomain IB and the dye-binding site in the pocket between subdomains IA, IIA and IIIA. This work confirms that pentamethine cyanine dyes could be proposed as powerful far-red fluorescent probes applicable for highly sensitive detection of albumins.
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Affiliation(s)
- D. Aristova
- Institute of Molecular Biology and Genetics NASU, 150 Zabolotnogo Street, 03143 Kyiv, Ukraine
| | - G. Volynets
- Institute of Molecular Biology and Genetics NASU, 150 Zabolotnogo Street, 03143 Kyiv, Ukraine
| | - S. Chernii
- Institute of Molecular Biology and Genetics NASU, 150 Zabolotnogo Street, 03143 Kyiv, Ukraine
| | - M. Losytskyy
- Institute of Molecular Biology and Genetics NASU, 150 Zabolotnogo Street, 03143 Kyiv, Ukraine
| | - A. Balanda
- Institute of Molecular Biology and Genetics NASU, 150 Zabolotnogo Street, 03143 Kyiv, Ukraine
| | - Yu. Slominskii
- Institute of Organic Chemistry NASU, 5 Murmans'ka Street, 02094 Kyiv, Ukraine
| | - A. Mokhir
- Organic Chemistry II, Friedrich-Alexander-University of Erlangen-Nuremberg, Nikolaus-Fiebiger-Strasse 10, 91058 Erlangen, Germany
| | - S. Yarmoluk
- Institute of Molecular Biology and Genetics NASU, 150 Zabolotnogo Street, 03143 Kyiv, Ukraine
| | - V. Kovalska
- Institute of Molecular Biology and Genetics NASU, 150 Zabolotnogo Street, 03143 Kyiv, Ukraine
- Scientific Services Company Otava Ltd, 150 Zabolotnogo Street, 03143 Kyiv, Ukraine
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12
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Ali LMA, Mathlouthi E, Cahu M, Sene S, Daurat M, Long J, Guari Y, Salles F, Chopineau J, Devoisselle JM, Larionova J, Gary-Bobo M. Synergic effect of doxorubicin release and two-photon irradiation of Mn2+-doped Prussian blue nanoparticles on cancer therapy. RSC Adv 2020; 10:2646-2649. [PMID: 35496092 PMCID: PMC9048416 DOI: 10.1039/c9ra09133e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 01/02/2020] [Indexed: 12/14/2022] Open
Abstract
We demonstrate here that Mn2+-doped Prussian blue nanoparticles of ca. 55 nm loaded with doxorubicin may be used as efficient therapeutic agents for combined photothermal and chemo-therapy of cancer cells with a synergic effect under two photon irradiation. Mn2+-doped Prussian blue nanoparticles loaded with doxorubicin present high efficiency for combined photothermal and chemotherapy of cancer cells with a synergic effect under two-photon irradiation.![]()
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Affiliation(s)
- Leonid Patsenker
- Department of Natural SciencesAriel University Ariel 40700 Israel
| | - Gary Gellerman
- Department of Natural SciencesAriel University Ariel 40700 Israel
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14
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Borg RE, Rochford J. Molecular Photoacoustic Contrast Agents: Design Principles & Applications. Photochem Photobiol 2018; 94:1175-1209. [PMID: 29953628 PMCID: PMC6252265 DOI: 10.1111/php.12967] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 06/10/2018] [Indexed: 12/24/2022]
Abstract
Photoacoustic imaging (PAI) is a rapidly growing field which offers high spatial resolution and high contrast for deep-tissue imaging in vivo. PAI is nonionizing and noninvasive and combines the optical resolution of fluorescence imaging with the spatial resolution of ultrasound imaging. In particular, the development of exogenous PA contrast agents has gained significant momentum of late with a vastly expanding complexity of dye materials under investigation ranging from small molecules to macromolecular proteins, polymeric and inorganic nanoparticles. The goal of this review is to survey the current state of the art in molecular photoacoustic contrast agents (MPACs) for applications in biomedical imaging. The fundamental design principles of MPACs are presented and a review of prior reports spanning from early-to-current literature is put forth.
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Affiliation(s)
| | - Jonathan Rochford
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, MA 02125
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Chan LY, Teo JDW, Tan KSW, Sou K, Kwan WL, Lee CLK. Near Infrared Fluorophore-Tagged Chloroquine in Plasmodium falciparum Diagnostic Imaging. Molecules 2018; 23:molecules23102635. [PMID: 30322183 PMCID: PMC6222297 DOI: 10.3390/molecules23102635] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 10/11/2018] [Accepted: 10/12/2018] [Indexed: 12/16/2022] Open
Abstract
Chloroquine was among the first of several effective drug treatments against malaria until the onset of chloroquine resistance. In light of diminished clinical efficacy of chloroquine as an antimalarial therapeutic, there is potential in efforts to adapt chloroquine for other clinical applications, such as in combination therapies and in diagnostics. In this context, we designed and synthesized a novel asymmetrical squaraine dye coupled with chloroquine (SQR1-CQ). In this study, SQR1-CQ was used to label live Plasmodium falciparum (P. falciparum) parasite cultures of varying sensitivities towards chloroquine. SQR1-CQ positively stained ring, mature trophozoite and schizont stages of both chloroquine⁻sensitive and chloroquine⁻resistant P. falciparum strains. In addition, SQR1-CQ exhibited significantly higher fluorescence, when compared to the commercial chloroquine-BODIPY (borondipyrromethene) conjugate CQ-BODIPY. We also achieved successful SQR1-CQ labelling of P. falciparum directly on thin blood smear preparations. Drug efficacy experiments measuring half-maximal inhibitory concentration (IC50) showed lower concentration of effective inhibition against resistant strain K1 by SQR1-CQ compared to conventional chloroquine. Taken together, the versatile and highly fluorescent labelling capability of SQR1-CQ and promising preliminary IC50 findings makes it a great candidate for further development as diagnostic tool with drug efficacy against chloroquine-resistant P. falciparum.
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Affiliation(s)
- Li Yan Chan
- Department of Technology, Innovation and Enterprise (TIE), Singapore Polytechnic, 500 Dover Road, Singapore 139651, Singapore.
| | - Joshua Ding Wei Teo
- Department of Technology, Innovation and Enterprise (TIE), Singapore Polytechnic, 500 Dover Road, Singapore 139651, Singapore.
| | - Kevin Shyong-Wei Tan
- Laboratory of Molecular and Cellular Parasitology, Department of Microbiology and Immunology, National University of Singapore, 5 Science Drive 2 Block MD4, Level 3, Singapore 117545, Singapore.
| | - Keitaro Sou
- Research Institute for Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan.
| | - Wei Lek Kwan
- Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372, Singapore.
| | - Chi-Lik Ken Lee
- Department of Technology, Innovation and Enterprise (TIE), Singapore Polytechnic, 500 Dover Road, Singapore 139651, Singapore.
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16
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Capozza M, Blasi F, Valbusa G, Oliva P, Cabella C, Buonsanti F, Cordaro A, Pizzuto L, Maiocchi A, Poggi L. Photoacoustic imaging of integrin-overexpressing tumors using a novel ICG-based contrast agent in mice. PHOTOACOUSTICS 2018; 11:36-45. [PMID: 30105205 PMCID: PMC6086215 DOI: 10.1016/j.pacs.2018.07.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 07/27/2018] [Accepted: 07/27/2018] [Indexed: 05/20/2023]
Abstract
PhotoAcoustic Imaging (PAI) is a biomedical imaging modality currently under evaluation in preclinical and clinical settings. In this work, ICG is coupled to an integrin binding vector (ICG-RGD) to combine the good photoacoustic properties of ICG and the favourable αvβ3-binding capabilities of a small RGD cyclic peptidomimetic. ICG-RGD is characterized in terms of physicochemical properties, biodistribution and imaging performance. Tumor uptake was assessed in subcutaneous xenograft mouse models of human glioblastoma (U-87MG, high αvβ3 expression) and epidermoid carcinoma (A431, low αvβ3 expression). ICG and ICG-RGD showed high PA signal in tumors already after 15 min post-injection. At later time points the signal of ICG rapidly decreased, while ICG-RGD showed sustained uptake in U-87MG but not in A431 tumors, likely due to the integrin-mediated retention of the probe. In conclusion, ICG-RGD is a novel targeted contrast agents for PAI with superior biodistribution, tumor uptake properties and diagnostic value compared to ICG.
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Affiliation(s)
- Martina Capozza
- Università degli Studi di Torino, Dipartimento di Biotecnologie Molecolari e Scienze per la Salute, Via Nizza 52, 10126, Torino, Italy
- Bracco Imaging SpA, Centro Ricerche Bracco, Via Ribes 5, 10010, Colleretto Giacosa, Torino, Italy
| | - Francesco Blasi
- Ephoran – Multi-Imaging Solutions, Via Ribes 5, 10010, Colleretto Giacosa, Torino, Italy
| | - Giovanni Valbusa
- Ephoran – Multi-Imaging Solutions, Via Ribes 5, 10010, Colleretto Giacosa, Torino, Italy
| | - Paolo Oliva
- Bracco Imaging SpA, Centro Ricerche Bracco, Via Ribes 5, 10010, Colleretto Giacosa, Torino, Italy
| | - Claudia Cabella
- Bracco Imaging SpA, Centro Ricerche Bracco, Via Ribes 5, 10010, Colleretto Giacosa, Torino, Italy
| | - Federica Buonsanti
- Bracco Imaging SpA, Centro Ricerche Bracco, Via Ribes 5, 10010, Colleretto Giacosa, Torino, Italy
| | - Alessia Cordaro
- Bracco Imaging SpA, Centro Ricerche Bracco, Via Ribes 5, 10010, Colleretto Giacosa, Torino, Italy
| | - Lorena Pizzuto
- Bracco Imaging SpA, Centro Ricerche Bracco, Via Ribes 5, 10010, Colleretto Giacosa, Torino, Italy
| | - Alessandro Maiocchi
- Bracco Imaging SpA, Centro Ricerche Bracco, Via Ribes 5, 10010, Colleretto Giacosa, Torino, Italy
| | - Luisa Poggi
- Bracco Imaging SpA, Centro Ricerche Bracco, Via Ribes 5, 10010, Colleretto Giacosa, Torino, Italy
- Corresponding author.
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17
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Estelrich J, Busquets MA. Iron Oxide Nanoparticles in Photothermal Therapy. Molecules 2018; 23:E1567. [PMID: 29958427 PMCID: PMC6100614 DOI: 10.3390/molecules23071567] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 06/24/2018] [Accepted: 06/26/2018] [Indexed: 12/22/2022] Open
Abstract
Photothermal therapy is a kind of therapy based on increasing the temperature of tumoral cells above 42 °C. To this aim, cells must be illuminated with a laser, and the energy of the radiation is transformed in heat. Usually, the employed radiation belongs to the near-infrared radiation range. At this range, the absorption and scattering of the radiation by the body is minimal. Thus, tissues are almost transparent. To improve the efficacy and selectivity of the energy-to-heat transduction, a light-absorbing material, the photothermal agent, must be introduced into the tumor. At present, a vast array of compounds are available as photothermal agents. Among the substances used as photothermal agents, gold-based compounds are one of the most employed. However, the undefined toxicity of this metal hinders their clinical investigations in the long run. Magnetic nanoparticles are a good alternative for use as a photothermal agent in the treatment of tumors. Such nanoparticles, especially those formed by iron oxides, can be used in combination with other substances or used themselves as photothermal agents. The combination of magnetic nanoparticles with other photothermal agents adds more capabilities to the therapeutic system: the nanoparticles can be directed magnetically to the site of interest (the tumor) and their distribution in tumors and other organs can be imaged. When used alone, magnetic nanoparticles present, in theory, an important limitation: their molar absorption coefficient in the near infrared region is low. The controlled clustering of the nanoparticles can solve this drawback. In such conditions, the absorption of the indicated radiation is higher and the conversion of energy in heat is more efficient than in individual nanoparticles. On the other hand, it can be designed as a therapeutic system, in which the heat generated by magnetic nanoparticles after irradiation with infrared light can release a drug attached to the nanoparticles in a controlled manner. This form of targeted drug delivery seems to be a promising tool of chemo-phototherapy. Finally, the heating efficiency of iron oxide nanoparticles can be increased if the infrared radiation is combined with an alternating magnetic field.
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Affiliation(s)
- Joan Estelrich
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Avda., Joan XXIII, 27⁻31, 08028 Barcelona, Catalonia, Spain.
- Nstitut de Nanociència i Nanotecnologia, IN2UB, Facultat de Química, Diagonal 645, 08028 Barcelona, Catalonia, Spain.
| | - Maria Antònia Busquets
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Avda., Joan XXIII, 27⁻31, 08028 Barcelona, Catalonia, Spain.
- Nstitut de Nanociència i Nanotecnologia, IN2UB, Facultat de Química, Diagonal 645, 08028 Barcelona, Catalonia, Spain.
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18
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Mendoza G, Ortiz de Solorzano I, Pintre I, Garcia-Salinas S, Sebastian V, Andreu V, Gimeno M, Arruebo M. Near infrared dye-labelled polymeric micro- and nanomaterials: in vivo imaging and evaluation of their local persistence. NANOSCALE 2018; 10:2970-2982. [PMID: 29372230 DOI: 10.1039/c7nr07345c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The use of micro- and nanomaterials as carriers of therapeutic molecules can enhance the efficiency of treatments while avoiding side effects thanks to the development of controlled drug delivery systems. The binding of a dye to a drug or to a drug carrier has opened up a wide range of possibilities for an effective in vivo optical tracing of drug biodistribution by using non-invasive real-time technologies prior to their potential use as therapeutic vectors. Here, we describe the fluorescent tagging of polymeric micro- and nanomaterials based on poly(lactic-co-glycolic) acid and on the thermoresponsive poly(N-isopropylacrylamide) with the fluorescent probe IR-820 which was chemically modified for its covalent coupling to the materials. The chemical modification of the dye and the polymers yielded micro- and nanoparticulated labelled materials to be potentially used as drug depots of different therapeutic molecules. In vitro biological studies revealed their reduced cytotoxicity. A spatiotemporal in vivo micro- and nanoparticle tracking allowed the evaluation of the biodistribution of materials showing their local persistence and high biocompatibility after pathological studies. These results underline the suitability of these materials for the local, sustained, not harmful and/or on-demand drug delivery and the remarkable importance of evaluating the biodistribution of materials and tissue persistence for their use as local drug depots.
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Affiliation(s)
- Gracia Mendoza
- Department of Chemical Engineering. Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/Poeta Mariano Esquillor S/N, 50018-Zaragoza, Spain.
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19
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Stock P, Weber K. Deep Digging: Far Red Imaging for the Monitoring of Transplanted Hepatocytes in Rats. Methods Mol Biol 2017; 1506:215-228. [PMID: 27830556 DOI: 10.1007/978-1-4939-6506-9_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Technologies for in vivo imaging of the distribution and integration of cell transplants gain significance for the use of novel cell therapy approaches in regenerative medicine. Applied to adequate animal models, they provide information on the spatio-temporal engraftment and functional performance of the cells transplanted. This chapter includes a detailed description of the in vivo tracking of transplanted hepatocytes in rat liver including the conjugation of antibodies to fluorochromes for far red imaging using a multispectral optical imager.
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Affiliation(s)
- Peggy Stock
- Clinics and Policlinics of Visceral-, Transplantation-, Thoracic- and Vascular Surgery, Applied Molecular Hepatology, University of Leipzig, Liebigstraße 21, 04103, Leipzig, Germany.
| | - Kristin Weber
- Department of Surgery, University of Leipzig, Leipzig, Germany
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20
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Wang R, Jin RX, Qin ZY, Bian KJ, Wang XS. Novel and facile synthesis of 1-benzazepines via copper-catalyzed oxidative C(sp3)–H/C(sp2)–H cross-coupling. Chem Commun (Camb) 2017; 53:12229-12232. [DOI: 10.1039/c7cc07027f] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A novel synthetic strategy for the facile construction of 1-benzazepines has been developedviacopper-catalyzed oxidative C(sp3)–H/C(sp2)–H cross-coupling.
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Affiliation(s)
- Rui Wang
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Ruo-Xing Jin
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Zi-Yang Qin
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Kang-Jie Bian
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Xi-Sheng Wang
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
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21
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Vus K, Tarabara U, Kurutos A, Ryzhova O, Gorbenko G, Trusova V, Gadjev N, Deligeorgiev T. Aggregation behavior of novel heptamethine cyanine dyes upon their binding to native and fibrillar lysozyme. MOLECULAR BIOSYSTEMS 2017; 13:970-980. [DOI: 10.1039/c7mb00185a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Novel cyanine dyes can be used for amyloid fibril detection.
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Affiliation(s)
- Kateryna Vus
- Department of Nuclear and Medical Physics
- V.N. Karazin Kharkiv National University
- Kharkiv
- Ukraine
| | - Ulyana Tarabara
- Department of Nuclear and Medical Physics
- V.N. Karazin Kharkiv National University
- Kharkiv
- Ukraine
| | - Atanas Kurutos
- Faculty of Chemistry and Pharmacy
- Sofia University
- Sofia
- Bulgaria
| | - Olga Ryzhova
- Department of Nuclear and Medical Physics
- V.N. Karazin Kharkiv National University
- Kharkiv
- Ukraine
| | - Galyna Gorbenko
- Department of Nuclear and Medical Physics
- V.N. Karazin Kharkiv National University
- Kharkiv
- Ukraine
| | - Valeriya Trusova
- Department of Nuclear and Medical Physics
- V.N. Karazin Kharkiv National University
- Kharkiv
- Ukraine
| | - Nikolai Gadjev
- Faculty of Chemistry and Pharmacy
- Sofia University
- Sofia
- Bulgaria
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22
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Liu X, Wu M, Hu Q, Bai H, Zhang S, Shen Y, Tang G, Ping Y. Redox-Activated Light-Up Nanomicelle for Precise Imaging-Guided Cancer Therapy and Real-Time Pharmacokinetic Monitoring. ACS NANO 2016; 10:11385-11396. [PMID: 28024380 DOI: 10.1021/acsnano.6b06688] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Simultaneous tumor imaging, therapy, and pharmacokinetic monitoring can offer a safe and effective strategy for cancer therapy. This work describes the design of a fluorescence light-up nanomicelle that can afford precise imaging-guided drug delivery and pharmacokinetic monitoring in a real-time fashion for cancer chemotherapy. The nanomicelle, which contains a boron dipyrromethene based fluorescent probe as the hydrophobic core and a redox-triggered detachable poly(ethylene glycol) (PEG) shell, can accumulate at the tumor site via enhanced permeation and retention effect. The PEG detachment induced by tumoral and intracellular glutathione can destabilize the nanomicelle, leading to fluorescence light up and simultaneous drug release. Importantly, the fluorescence intensities generated by the nanomicelles in different organs are well-correlated with released drug concentrations in both temporal and spatial manners, suggesting its precise role for imaging-guided drug delivery and pharmacokinetic monitoring in vivo. The tumor growth can be effectively inhibited by the docetaxel-loaded nanomicelle formulation, and the nanomicelles are monitored to be excreted via hepatobiliary routes. This nanomicelle for precise imaging-guided chemotherapy provides a safe and robust theranostic strategy for the evaluation of cancer nanomedicine.
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Affiliation(s)
- Xingang Liu
- Department of Chemistry, Zhejiang University , Hangzhou 310028, China
| | - Min Wu
- Department of Chemistry, Zhejiang University , Hangzhou 310028, China
| | - Qinglian Hu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology , Hangzhou 310032, China
| | - Hongzhen Bai
- State Key Laboratory of Industrial Control Technology, College of Control Science and Engineering, Zhejiang University , Hangzhou 310028, China
| | - Shuoqing Zhang
- Department of Chemistry, Zhejiang University , Hangzhou 310028, China
| | - Youqing Shen
- Center for Bionanoengineering and State Key Laboratory for Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University , Hangzhou 310027, China
| | - Guping Tang
- Department of Chemistry, Zhejiang University , Hangzhou 310028, China
| | - Yuan Ping
- School of Materials Science and Engineering, Nanyang Technological University , Singapore 639798
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23
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Pauli J, Pochstein M, Haase A, Napp J, Luch A, Resch-Genger U. Influence of Label and Charge Density on the Association of the Therapeutic Monoclonal Antibodies Trastuzumab and Cetuximab Conjugated to Anionic Fluorophores. Chembiochem 2016; 18:101-110. [DOI: 10.1002/cbic.201600299] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 10/28/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Jutta Pauli
- Federal Institute for Materials Research and Testing (BAM); Division 1.10 Biophotonics; Richard-Willstaetter-Strasse 11 12489 Berlin Germany
| | - Marieke Pochstein
- Federal Institute for Materials Research and Testing (BAM); Division 1.10 Biophotonics; Richard-Willstaetter-Strasse 11 12489 Berlin Germany
| | - Andrea Haase
- German Federal Institute for Risk Assessment (BfR); Department of Chemical and Product Safety; Max-Dohrn-Strasse 8-10 10589 Berlin Germany
| | - Joanna Napp
- Institute of Interventional and Diagnostic Radiology; University Medical Center Göttingen; Robert-Koch-Strasse 40 37075 Göttingen Germany
- Department of Haematology and Medical Oncology; University Medical Center Göttingen; Robert-Koch-Strasse 40,
- Department of Molecular Biology of Neuronal Signal; Max-Planck-Institute of Experimental Medicine; Hermann-Rein-Strasse 3 37075 Göttingen Germany
| | - Andreas Luch
- German Federal Institute for Risk Assessment (BfR); Department of Chemical and Product Safety; Max-Dohrn-Strasse 8-10 10589 Berlin Germany
| | - Ute Resch-Genger
- Federal Institute for Materials Research and Testing (BAM); Division 1.10 Biophotonics; Richard-Willstaetter-Strasse 11 12489 Berlin Germany
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24
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Weber J, Beard PC, Bohndiek SE. Contrast agents for molecular photoacoustic imaging. Nat Methods 2016; 13:639-50. [PMID: 27467727 DOI: 10.1038/nmeth.3929] [Citation(s) in RCA: 771] [Impact Index Per Article: 96.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 06/25/2016] [Indexed: 02/07/2023]
Abstract
Photoacoustic imaging (PAI) is an emerging tool that bridges the traditional depth limits of ballistic optical imaging and the resolution limits of diffuse optical imaging. Using the acoustic waves generated in response to the absorption of pulsed laser light, it provides noninvasive images of absorbed optical energy density at depths of several centimeters with a resolution of ∼100 μm. This versatile and scalable imaging modality has now shown potential for molecular imaging, which enables visualization of biological processes with systemically introduced contrast agents. Understanding the relative merits of the vast range of contrast agents available, from small-molecule dyes to gold and carbon nanostructures to liposome encapsulations, is a considerable challenge. Here we critically review the physical, chemical and biochemical characteristics of the existing photoacoustic contrast agents, highlighting key applications and present challenges for molecular PAI.
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Affiliation(s)
- Judith Weber
- Department of Physics, University of Cambridge, Cambridge, UK
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - Paul C Beard
- Department of Medical Physics and Biomedical Engineering, University College London, London, UK
| | - Sarah E Bohndiek
- Department of Physics, University of Cambridge, Cambridge, UK
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
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25
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Lobo ACS, Silva AD, Tomé VA, Pinto SMA, Silva EFF, Calvete MJF, Gomes CMF, Pereira MM, Arnaut LG. Phthalocyanine Labels for Near-Infrared Fluorescence Imaging of Solid Tumors. J Med Chem 2016; 59:4688-96. [DOI: 10.1021/acs.jmedchem.6b00054] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Ana C. S. Lobo
- CQC, Chemistry Department, University of Coimbra, 3004 - 535 Coimbra, Portugal
| | - Alexandre D. Silva
- CQC, Chemistry Department, University of Coimbra, 3004 - 535 Coimbra, Portugal
| | - Vanessa A. Tomé
- CQC, Chemistry Department, University of Coimbra, 3004 - 535 Coimbra, Portugal
| | - Sara M. A. Pinto
- CQC, Chemistry Department, University of Coimbra, 3004 - 535 Coimbra, Portugal
| | - Elsa F. F. Silva
- CQC, Chemistry Department, University of Coimbra, 3004 - 535 Coimbra, Portugal
| | - Mário J. F. Calvete
- CQC, Chemistry Department, University of Coimbra, 3004 - 535 Coimbra, Portugal
| | - Célia M. F. Gomes
- Laboratory
of Pharmacology and Experimental Therapeutics, IBILI, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Mariette M. Pereira
- CQC, Chemistry Department, University of Coimbra, 3004 - 535 Coimbra, Portugal
| | - Luis G. Arnaut
- CQC, Chemistry Department, University of Coimbra, 3004 - 535 Coimbra, Portugal
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26
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Romieu A, Richard JA. An expedient synthesis of N,N-dialkylamino-dihydroxanthene-pyrylium conjugated near-infrared fluorescent dyes. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2015.12.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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27
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Symmetric Meso-Chloro-Substituted Pentamethine Cyanine Dyes Containing Benzothiazolyl/Benzoselenazolyl Chromophores Novel Synthetic Approach and Studies on Photophysical Properties upon Interaction with bio-Objects. J Fluoresc 2015; 26:177-87. [DOI: 10.1007/s10895-015-1700-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 10/20/2015] [Indexed: 12/22/2022]
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28
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Tansi FL, Rüger R, Rabenhold M, Steiniger F, Fahr A, Hilger I. Fluorescence-quenching of a liposomal-encapsulated near-infrared fluorophore as a tool for in vivo optical imaging. J Vis Exp 2015:e52136. [PMID: 25591069 DOI: 10.3791/52136] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Optical imaging offers a wide range of diagnostic modalities and has attracted a lot of interest as a tool for biomedical imaging. Despite the enormous number of imaging techniques currently available and the progress in instrumentation, there is still a need for highly sensitive probes that are suitable for in vivo imaging. One typical problem of available preclinical fluorescent probes is their rapid clearance in vivo, which reduces their imaging sensitivity. To circumvent rapid clearance, increase number of dye molecules at the target site, and thereby reduce background autofluorescence, encapsulation of the near-infrared fluorescent dye, DY-676-COOH in liposomes and verification of its potential for in vivo imaging of inflammation was done. DY-676 is known for its ability to self-quench at high concentrations. We first determined the concentration suitable for self-quenching, and then encapsulated this quenching concentration into the aqueous interior of PEGylated liposomes. To substantiate the quenching and activation potential of the liposomes we use a harsh freezing method which leads to damage of liposomal membranes without affecting the encapsulated dye. The liposomes characterized by a high level of fluorescence quenching were termed Lip-Q. We show by experiments with different cell lines that uptake of Lip-Q is predominantly by phagocytosis which in turn enabled the characterization of its potential as a tool for in vivo imaging of inflammation in mice models. Furthermore, we use a zymosan-induced edema model in mice to substantiate the potential of Lip-Q in optical imaging of inflammation in vivo. Considering possible uptake due to inflammation-induced enhanced permeability and retention (EPR) effect, an always-on liposome formulation with low, non-quenched concentration of DY-676-COOH (termed Lip-dQ) and the free DY-676-COOH were compared with Lip-Q in animal trials.
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Affiliation(s)
- Felista L Tansi
- Experimental Radiology, Institute of Diagnostic and Interventional Radiology I, Jena University Hospital;
| | - Ronny Rüger
- Department of Pharmaceutical Technology, Friedrich-Schiller-University Jena;
| | - Markus Rabenhold
- Department of Pharmaceutical Technology, Friedrich-Schiller-University Jena
| | | | - Alfred Fahr
- Department of Pharmaceutical Technology, Friedrich-Schiller-University Jena
| | - Ingrid Hilger
- Experimental Radiology, Institute of Diagnostic and Interventional Radiology I, Jena University Hospital;
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29
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Abd El-Aal HAK, Khalaf AA, El-Khawaga AMA. Friedel–Crafts Chemistry. Part 43. A Convergent Construction of Some New Bridged Aza-Bicyclic Analogues of Azocine, Azonine, and Azecine via Friedel–Crafts Ring Closures. Aust J Chem 2015; 68:404. [DOI: 10.1071/ch14284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Our present study provides an expedient general approach for the synthesis of some novel bridged dibenzo-azocinone, -azoninone, -azecinone, -azocine, -azonine, and -azecine derivatives via Friedel–Crafts intramolecular ring-closure reactions. The methodology is realized by a four-step protocol involving first preparation of 7-methyl-3,3-diphenylindoline through the reduction of 7-methyl-3,3-diphenylindolin-2-one followed by N-alkylations with different haloesters (α-, β- or γ-). The resulting indoline ester derivatives were allowed to react both by addition of Grignard reagents to afford alcohols and by hydrolysis to afford acids. Particular attention has been given to the novel structures especially in regard to the promising pharmaceutical and therapeutic values associated with their skeletons.
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30
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Assessment of rat antigen-induced arthritis and its suppression during glucocorticoid therapy by use of hemicyanine dye probes with different molecular weight in near-infrared fluorescence optical imaging. Invest Radiol 2014; 48:729-37. [PMID: 23835596 DOI: 10.1097/rli.0b013e3182954046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
PURPOSE Arthritic joints are ideal disease entities to be assessed via optical imaging. Here, we investigated the selective accumulation behavior of two differently sized hemicyanine optical probes in arthritic joints and its modification during glucocorticoid therapy in the course of inflammation. MATERIALS AND METHODS The well-standardized preclinical antigen-induced arthritis (AIA) model in rats was used. The animals were divided into 3 groups: arthritic, arthritic and dexamethasone-treated, and immunized only. After intravenous coinjection of DY-752 (size, 800 Da) and DY-682-(rat) IgG (size, 150 kDa) probes, spectrally unmixed near-infrared fluorescence images were acquired and analyzed semiquantitatively. Probe organ distribution, joint swelling, blood cell counts, joint vessel density, and histological scoring of arthritis were determined. RESULTS The local joint accumulation kinetics of the DY-752 probe differed from the DY-682-IgG one. In the course of AIA, probe signaling in arthritic joints was similar between each other. Joint swelling and histological scoring were in accordance with signaling. Dexamethasone treatment of rats with AIA significantly reduced both the near-infrared fluorescence signals and severity of arthritis but did not change the joint vascular density or the uptake of the probes by phagocytes. A differential biodistribution of both probes was encountered, but such an accumulation was prevented by dexamethasone treatment. CONCLUSIONS Near-infrared fluorescence signaling in the course of AIA closely reflects the pathophysiological events of the arthritic joint and the effects of therapy independently of the molecular size of the probe. The results show the suitability of our hemicyanine probes for imaging of arthritis.
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31
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Tansi FL, Rüger R, Rabenhold M, Steiniger F, Fahr A, Kaiser WA, Hilger I. Liposomal encapsulation of a near-infrared fluorophore enhances fluorescence quenching and reliable whole body optical imaging upon activation in vivo. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 9:3659-3669. [PMID: 23650267 DOI: 10.1002/smll.201203211] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 02/18/2013] [Indexed: 06/02/2023]
Abstract
In the past decade, there has been significant progress in the development of water soluble near-infrared fluorochromes for use in a wide range of imaging applications. Fluorochromes with high photo and thermal stability, sensitivity, adequate pharmacological properties and absorption/emission maxima within the near infrared window (650-900 nm) are highly desired for in vivo imaging, since biological tissues show very low absorption and auto-fluorescence at this spectrum window. Taking these properties into consideration, a myriad of promising near infrared fluorescent probes has been developed recently. However, a hallmark of most of these probes is a rapid clearance in vivo, which hampers their application. It is hypothesized that encapsulation of the near infrared fluorescent dye DY-676-COOH, which undergoes fluorescence quenching at high concentrations, in the aqueous interior of liposomes will result in protection and fluorescence quenching, which upon degradation by phagocytes in vivo will lead to fluorescence activation and enable imaging of inflammation. Liposomes prepared with high concentrations of DY-676-COOH reveal strong fluorescence quenching. It is demonstrated that the non-targeted PEGylated fluorescence-activatable liposomes are taken up predominantly by phagocytosis and degraded in lysosomes. Furthermore, in zymosan-induced edema models in mice, the liposomes are taken up by monocytes and macrophages which migrate to the sites of inflammation. Opposed to free DY-676-COOH, prolonged stability and retention of liposomal-DY-676-COOH is reflected in a significant increase in fluorescence intensity of edema. Thus, protected delivery and fluorescence quenching make the DY-676-COOH-loaded liposomes a highly promising contrast agent for in vivo optical imaging of inflammatory diseases.
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Affiliation(s)
- Felista L Tansi
- Department of Experimental Radiology, Institute of Diagnostic and Interventional Radiology I, Jena University Hospital - Friedrich, Schiller University Jena, Erlanger Allee 101, 07747 Jena, Germany.
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32
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Haedicke K, Gräfe S, Lehmann F, Hilger I. Multiplexed in vivo fluorescence optical imaging of the therapeutic efficacy of photodynamic therapy. Biomaterials 2013; 34:10075-83. [PMID: 24050876 DOI: 10.1016/j.biomaterials.2013.08.087] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Accepted: 08/27/2013] [Indexed: 11/18/2022]
Abstract
In our study we wanted to elucidate a time frame for in vivo optical imaging of the therapeutic efficacy of photodynamic therapy (PDT) by using a multiplexed imaging approach for detecting apoptosis and vascularization. The internalization of the photosensitizer Foslip(®) into tongue-squamous epithelium carcinoma cells (CAL-27) was examined in vitro and in vivo. For detecting apoptosis, annexin V was covalently coupled to the near-infrared dye DY-734 and the spectroscopic properties and binding affinity to apoptotic CAL-27 cells were elucidated. CAL-27 tumor bearing mice were treated with PDT and injected 2 days and 2 weeks thereafter with DY-734-annexin V. PDT-induced changes in tumor vascularization were detected with the contrast agent IRDye(®) 800CW RGD up to 3 weeks after PDT. A perinuclear enrichment of Foslip(®) could be seen in vitro which was reflected in an accumulation in CAL-27 tumors in vivo. The DY-734-annexin V (coupling efficiency 30-50%) revealed a high binding affinity to apoptotic compared to non-apoptotic cells (17.2% vs. 1.2%) with a KD-value of 20 nm. After PDT-treatment, the probe showed a significantly higher (p <0.05) contrast in tumors at 2 days compared to 2 weeks after therapy (2-8 h post injection). A reduction of the vascularization could be detected after PDT especially in the central tumor areas. To detect the therapeutic efficacy of PDT, a multiplexed imaging approach is necessary. A detection of apoptotic cells is possible just shortly after therapy, whereas at later time points the efficacy can be verified by investigating the vascularization.
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Affiliation(s)
- Katja Haedicke
- Department of Experimental Radiology, Institute of Diagnostic and Interventional Radiology I, Jena University Hospital, Friedrich-Schiller University Jena, Erlanger Allee 101, Jena D-07747, Germany.
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Pivotal role of P450-P450 interactions in CYP3A4 allostery: the case of α-naphthoflavone. Biochem J 2013; 453:219-30. [PMID: 23651100 DOI: 10.1042/bj20130398] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We investigated the relationship between oligomerization of CYP3A4 (cytochrome P450 3A4) and its response to ANF (α-naphthoflavone), a prototypical heterotropic activator. The addition of ANF resulted in over a 2-fold increase in the rate of CYP3A4-dependent debenzylation of 7-BFC [7-benzyloxy-4-(trifluoromethyl)coumarin] in HLM (human liver microsomes), but failed to produce activation in BD Supersomes or Baculosomes containing recombinant CYP3A4 and NADPH-CPR (cytochrome P450 reductase). However, incorporation of purified CYP3A4 into Supersomes containing only recombinant CPR reproduced the behaviour observed with HLM. The activation in this system was dependent on the surface density of the enzyme. Although no activation was detectable at an L/P (lipid/P450) ratio ≥750, it reached 225% at an L/P ratio of 140. To explore the relationship between this effect and CYP3A4 oligomerization, we probed P450-P450 interactions with a new technique that employs LRET (luminescence resonance energy transfer). The amplitude of LRET in mixed oligomers of the haem protein labelled with donor and acceptor fluorophores exhibited a sigmoidal dependence on the surface density of CYP3A4 in Supersomes™. The addition of ANF eliminated this sigmoidal character and increased the degree of oligomerization at low enzyme concentrations. Therefore the mechanisms of CYP3A4 allostery with ANF involve effector-dependent modulation of P450-P450 interactions.
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Hoffmann K, Behnke T, Drescher D, Kneipp J, Resch-Genger U. Near-infrared-emitting nanoparticles for lifetime-based multiplexed analysis and imaging of living cells. ACS NANO 2013; 7:6674-6684. [PMID: 23837453 DOI: 10.1021/nn4029458] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The increase in information content from bioassays and bioimaging requires robust and efficient strategies for the detection of multiple analytes or targets in a single measurement, thereby addressing current health and security concerns. For fluorescence techniques, an attractive alternative to commonly performed spectral or color multiplexing presents lifetime multiplexing and the discrimination between different fluorophores based on their fluorescence decay kinetics. This strategy relies on fluorescent labels with sufficiently different lifetimes that are excitable at the same wavelength and detectable within the same spectral window. Here, we report on lifetime multiplexing and discrimination with a set of nanometer-sized particles loaded with near-infrared emissive organic fluorophores chosen to display very similar absorption and emission spectra, yet different fluorescence decay kinetics in suspension. Furthermore, as a first proof-of-concept, we describe bioimaging studies with 3T3 fibroblasts and J774 macrophages, incubated with mixtures of these reporters employing fluorescence lifetime imaging microscopy. These proof-of-concept measurements underline the potential of fluorescent nanoparticle reporters in fluorescence lifetime multiplexing, barcoding, and imaging for cellular studies, cell-based assays, and molecular imaging.
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Affiliation(s)
- Katrin Hoffmann
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Straße 11, 12489 Berlin, Germany
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35
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Pauli J, Licha K, Berkemeyer J, Grabolle M, Spieles M, Wegner N, Welker P, Resch-Genger U. New Fluorescent Labels with Tunable Hydrophilicity for the Rational Design of Bright Optical Probes for Molecular Imaging. Bioconjug Chem 2013; 24:1174-85. [PMID: 23758616 DOI: 10.1021/bc4000349] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jutta Pauli
- BAM Federal Institute for Materials Research and Testing, Division 1.10 Biophotonics,
Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| | - Kai Licha
- mivenion GmbH, Robert-Koch-Platz 4, D-10115 Berlin, Germany
| | - Janis Berkemeyer
- BAM Federal Institute for Materials Research and Testing, Division 1.10 Biophotonics,
Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| | - Markus Grabolle
- BAM Federal Institute for Materials Research and Testing, Division 1.10 Biophotonics,
Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| | - Monika Spieles
- BAM Federal Institute for Materials Research and Testing, Division 1.10 Biophotonics,
Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| | - Nicole Wegner
- mivenion GmbH, Robert-Koch-Platz 4, D-10115 Berlin, Germany
| | - Pia Welker
- mivenion GmbH, Robert-Koch-Platz 4, D-10115 Berlin, Germany
| | - Ute Resch-Genger
- BAM Federal Institute for Materials Research and Testing, Division 1.10 Biophotonics,
Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
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Xin J, Zhang X, Liang J, Xia L, Yin J, Nie Y, Wu K, Tian J. In vivo gastric cancer targeting and imaging using novel symmetric cyanine dye-conjugated GX1 peptide probes. Bioconjug Chem 2013; 24:1134-43. [PMID: 23725355 DOI: 10.1021/bc3006539] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
To facilitate the translation of cancer fluorescence imaging into clinical practice, the development of stable and highly specific and sensitive targeted fluorescence probes with low toxicity is desirable. GX1, a gastric tumor angiogenesis marker candidate, holds promise in the target-specific delivery of molecular imaging probes for early gastric cancer detection in vivo. In this study, we describe the design and synthesis of a series of novel penta-methine cyanine dyes using the symmetric synthesis method and further conjugated the dyes with GX1, allowing specific binding to the vasculature of gastric cancer. This efficient synthetic route can decrease the undesired byproducts, while increasing yield. Furthermore, in vivo fluorescence imaging revealed that this novel targeted probe accumulates selectively in the tumor site of SGC-7901 subcutaneous xenograft models. The combination of such novel vasculature-targeted molecular probes with fluorescence imaging technology may improve early detection, metastasis detection, and antitumor angiogenesis therapy for gastric cancer.
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Affiliation(s)
- Jing Xin
- School of Life Sciences and Technology, Xidian University, Xi'an, Shaanxi 710071, China
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37
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Lv F, He X, Wu L, Liu T. Lactose substituted zinc phthalocyanine: A near infrared fluorescence imaging probe for liver cancer targeting. Bioorg Med Chem Lett 2013; 23:1878-82. [DOI: 10.1016/j.bmcl.2012.12.103] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 12/20/2012] [Accepted: 12/29/2012] [Indexed: 11/26/2022]
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38
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Petty JT, Giri B, Miller IC, Nicholson DA, Sergev OO, Banks TM, Story SP. Silver clusters as both chromophoric reporters and DNA ligands. Anal Chem 2013; 85:2183-90. [PMID: 23330780 DOI: 10.1021/ac303531y] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Molecular silver clusters conjugated with DNA act as analyte sensors. Our studies evaluate a type of cluster-laden DNA strand whose structure and silver stoichiometry change with hybridization. The sensor strand integrates two functions: the 3' region binds target DNA strands through base recognition while the 5' sequence C(3)AC(3)AC(3)TC(3)A favors formation of a near-infrared absorbing and emitting cluster. This precursor form exclusively harbors an ∼11 silver atom cluster that absorbs at 400 nm and that condenses its single-stranded host. The 3' recognition site associates with a complementary target strand, thereby effecting a 330 nm red-shift in cluster absorption and a background-limited recovery of cluster emission at 790 nm. One factor underlying these changes is sensor unfolding and aggregation. Variations in salt and oligonucleotide concentrations control cluster development by influencing DNA association. Structural studies using fluorescence anisotropy, fluorescence correlation spectroscopy, and size exclusion chromatography show that the sensor-cluster conjugate opens and subsequently dimerizes with hybridization. A second factor contributing to the spectral and photophysical changes is cluster transformation. Empirical silver stoichiometries are preserved through hybridization, so hybridized, dimeric near-infrared conjugates host twice the amount of silver in relation to their violet absorbing predecessors. These DNA structure and net silver stoichiometry alterations provide insight into how DNA-silver conjugates recognize analytes.
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Affiliation(s)
- Jeffrey T Petty
- Department of Chemistry, Furman University, Greenville, South Carolina 29613, United States.
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39
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Sloniec J, Schnurr M, Witte C, Resch-Genger U, Schröder L, Hennig A. Biomembrane interactions of functionalized cryptophane-A: combined fluorescence and 129Xe NMR studies of a bimodal contrast agent. Chemistry 2013; 19:3110-8. [PMID: 23319433 DOI: 10.1002/chem.201203773] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Indexed: 12/19/2022]
Abstract
Fluorescent derivatives of the (129)Xe NMR contrast agent cryptophane-A were obtained by functionalization with near infrared fluorescent dyes DY680 and DY682. The resulting conjugates were spectrally characterized, and their interaction with giant and large unilamellar vesicles of varying phospholipid composition was analyzed by fluorescence and NMR spectroscopy. In the latter, a chemical exchange saturation transfer with hyperpolarized (129)Xe (Hyper-CEST) was used to obtain sufficient sensitivity. To determine the partitioning coefficients, we developed a method based on fluorescence resonance energy transfer from Nile Red to the membrane-bound conjugates. This indicated that not only the hydrophobicity of the conjugates, but also the phospholipid composition, largely determines the membrane incorporation. Thereby, partitioning into the liquid-crystalline phase of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine was most efficient. Fluorescence depth quenching and flip-flop assays suggest a perpendicular orientation of the conjugates to the membrane surface with negligible transversal diffusion, and that the fluorescent dyes reside in the interfacial area. The results serve as a basis to differentiate biomembranes by analyzing the Hyper-CEST signatures that are related to membrane fluidity, and pave the way for dissecting different contributions to the Hyper-CEST signal.
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Affiliation(s)
- Jagoda Sloniec
- Division 1.10 Biophotonics, BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse 11, 12489 Berlin, Germany
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40
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Busch C, Schröter T, Grabolle M, Wenzel M, Kempe H, Kaiser WA, Resch-Genger U, Hilger I. An In Vivo Spectral Multiplexing Approach for the Cooperative Imaging of Different Disease-Related Biomarkers with Near-Infrared Fluorescent Förster Resonance Energy Transfer Probes. J Nucl Med 2012; 53:638-46. [DOI: 10.2967/jnumed.111.094391] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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41
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Determination of the absolute fluorescence quantum yield of rhodamine 6G with optical and photoacoustic methods – Providing the basis for fluorescence quantum yield standards. Talanta 2012; 90:30-7. [DOI: 10.1016/j.talanta.2011.12.051] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2011] [Revised: 12/14/2011] [Accepted: 12/18/2011] [Indexed: 11/23/2022]
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42
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Würth C, Pauli J, Lochmann C, Spieles M, Resch-Genger U. Integrating Sphere Setup for the Traceable Measurement of Absolute Photoluminescence Quantum Yields in the Near Infrared. Anal Chem 2012; 84:1345-52. [DOI: 10.1021/ac2021954] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Christian Würth
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse 11, 12489
Berlin, Germany
| | - Jutta Pauli
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse 11, 12489
Berlin, Germany
| | - Cornelia Lochmann
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse 11, 12489
Berlin, Germany
| | - Monika Spieles
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse 11, 12489
Berlin, Germany
| | - Ute Resch-Genger
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse 11, 12489
Berlin, Germany
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43
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Grabolle M, Brehm R, Pauli J, Dees FM, Hilger I, Resch-Genger U. Determination of the Labeling Density of Fluorophore–Biomolecule Conjugates with Absorption Spectroscopy. Bioconjug Chem 2012; 23:287-92. [DOI: 10.1021/bc2003428] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Markus Grabolle
- BAM Federal Institute for Materials Research and Testing, Division Biophotonic,
Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Robert Brehm
- BAM Federal Institute for Materials Research and Testing, Division Biophotonic,
Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Jutta Pauli
- BAM Federal Institute for Materials Research and Testing, Division Biophotonic,
Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Franziska M Dees
- Institut für Diagnostische
und Interventionelle Radiologie des Klinikums der Friedrich-Schiller-Universität
Jena (IDIR), Forschungszentrum Lobeda,
Erlanger Allee 101, D-07747 Jena, Germany
| | - Ingrid Hilger
- Institut für Diagnostische
und Interventionelle Radiologie des Klinikums der Friedrich-Schiller-Universität
Jena (IDIR), Forschungszentrum Lobeda,
Erlanger Allee 101, D-07747 Jena, Germany
| | - Ute Resch-Genger
- BAM Federal Institute for Materials Research and Testing, Division Biophotonic,
Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
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Matteini P, Ratto F, Rossi F, Pini R. Emerging concepts of laser-activated nanoparticles for tissue bonding. JOURNAL OF BIOMEDICAL OPTICS 2012; 17:010701. [PMID: 22352632 DOI: 10.1117/1.jbo.17.1.010701] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report recent achievements and future perspectives of minimally invasive bonding of biological tissues triggered by laser light. In particular, we review new advancements in the biomedical exploitation of near-infrared absorbing gold nanoparticles as an original solution for the photothermal closure of surgical incisions. Advanced concepts of laser tissue bonding involving the application of hybrid nanocomposites obtained by inclusion of nanochromophores into biopolymer scaffolds are also introduced. The perspectives of tissue bonding are discussed in the following aspects: (1) tissue bonding with highly-stabilized nanochromophores, (2) enhanced tissue bonding with patterned nanocomposites, (3) real-time monitoring of temperature distributions, (4) tracking of tissue regeneration based on the optical resonances of gold nanoparticles.
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Affiliation(s)
- Paolo Matteini
- Institute of Applied Physics Nello Carrara, Italian National Research Council, via Madonna del Piano, 10-50019 Sesto Fiorentino, Italy
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45
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Licha K, Welker P, Weinhart M, Wegner N, Kern S, Reichert S, Gemeinhardt I, Weissbach C, Ebert B, Haag R, Schirner M. Fluorescence imaging with multifunctional polyglycerol sulfates: novel polymeric near-IR probes targeting inflammation. Bioconjug Chem 2011; 22:2453-60. [PMID: 22092336 DOI: 10.1021/bc2002727] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We present a highly selective approach for the targeting of inflammation with a multivalent polymeric probe. Dendritic polyglycerol was employed to synthesize a polyanionic macromolecular conjugate with a near-infrared fluorescent dye related to Indocyanine Green (ICG). On the basis of the dense assembly of sulfate groups which were generated from the polyol core, the resulting polyglycerol sulfate (molecular weight 12 kD with ~70 sulfate groups) targets factors of inflammation (IC(50) of 3-6 nM for inhibition of L-selectin binding) and is specifically transported into inflammatory cells. The in vivo accumulation studied by near-IR fluorescence imaging in an animal model of rheumatoid arthritis demonstrated fast and selective uptake which enabled the differentiation of diseased joints (score 1-3) with a 3.5-fold higher fluorescence level and a signal maximum at 60 min post injection. Localization in tissues using fluorescence histology showed that the conjugates are deposited in the inflammatory infiltrate in the synovial membrane, whereas nonsulfated control was not detected in association with disease. Hence, this type of polymeric imaging probe is an alternative to current bioconjugates and provides future options for targeted imaging and drug delivery.
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Affiliation(s)
- Kai Licha
- mivenion GmbH, Robert-Koch-Platz 4, 10115 Berlin, Germany.
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46
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Mathejczyk JE, Pauli J, Dullin C, Napp J, Tietze LF, Kessler H, Resch-Genger U, Alves F. Spectroscopically Well-Characterized RGD Optical Probe as a Prerequisite for Lifetime-Gated Tumor Imaging. Mol Imaging 2011. [DOI: 10.2310/7290.2011.00018] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Labeling of RGD peptides with near-infrared fluorophores yields optical probes for noninvasive imaging of tumors overexpressing αvβ3 integrins. An important prerequisite for optimum detection sensitivity in vivo is strongly absorbing and highly emissive probes with a known fluorescence lifetime. The RGD-Cy5.5 optical probe was derived by coupling Cy5.5 to a cyclic arginine–glycine–aspartic acid–d-phenylalanine–lysine (RGDfK) peptide via an aminohexanoic acid spacer. Spectroscopic properties of the probe were studied in different matrices in comparison to Cy5.5. For in vivo imaging, human glioblastoma cells were subcutaneously implanted into nude mice, and in vivo fluorescence intensity and lifetime were measured. The fluorescence quantum yield and lifetime of Cy5.5 were found to be barely affected on RGD conjugation but dramatically changed in the presence of proteins. By time domain fluorescence imaging, we demonstrated specific binding of RGD-Cy5.5 to glioblastoma xenografts in nude mice. Discrimination of unspecific fluorescence by lifetime-gated analysis further enhanced the detection sensitivity of RGD-Cy5.5-derived signals. We characterized RGD-Cy5.5 as a strongly emissive and stable probe adequate for selective targeting of αvβ3 integrins. The specificity and thus the overall detection sensitivity in vivo were optimized with lifetime gating, based on the previous determination of the probes fluorescence lifetime under application-relevant conditions.
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Affiliation(s)
- Julia Eva Mathejczyk
- From the Department of Molecular Biology of Neuronal Signals, Max-Planck-Institute for Experimental Medicine, Göttingen, Germany; Departments of Hematology and Oncology and Diagnostic Radiology, University Medical Center Göttingen, Göttingen, Germany; BAM Federal Institute for Materials Research and Testing, Berlin, Germany; Department of Organic and Biomolecular Chemistry, University of Göttingen, Göttingen, Germany; and Institute for Advanced Study and Center of Integrated Protein Science Munich,
| | - Jutta Pauli
- From the Department of Molecular Biology of Neuronal Signals, Max-Planck-Institute for Experimental Medicine, Göttingen, Germany; Departments of Hematology and Oncology and Diagnostic Radiology, University Medical Center Göttingen, Göttingen, Germany; BAM Federal Institute for Materials Research and Testing, Berlin, Germany; Department of Organic and Biomolecular Chemistry, University of Göttingen, Göttingen, Germany; and Institute for Advanced Study and Center of Integrated Protein Science Munich,
| | - Christian Dullin
- From the Department of Molecular Biology of Neuronal Signals, Max-Planck-Institute for Experimental Medicine, Göttingen, Germany; Departments of Hematology and Oncology and Diagnostic Radiology, University Medical Center Göttingen, Göttingen, Germany; BAM Federal Institute for Materials Research and Testing, Berlin, Germany; Department of Organic and Biomolecular Chemistry, University of Göttingen, Göttingen, Germany; and Institute for Advanced Study and Center of Integrated Protein Science Munich,
| | - Joanna Napp
- From the Department of Molecular Biology of Neuronal Signals, Max-Planck-Institute for Experimental Medicine, Göttingen, Germany; Departments of Hematology and Oncology and Diagnostic Radiology, University Medical Center Göttingen, Göttingen, Germany; BAM Federal Institute for Materials Research and Testing, Berlin, Germany; Department of Organic and Biomolecular Chemistry, University of Göttingen, Göttingen, Germany; and Institute for Advanced Study and Center of Integrated Protein Science Munich,
| | - Lutz-F. Tietze
- From the Department of Molecular Biology of Neuronal Signals, Max-Planck-Institute for Experimental Medicine, Göttingen, Germany; Departments of Hematology and Oncology and Diagnostic Radiology, University Medical Center Göttingen, Göttingen, Germany; BAM Federal Institute for Materials Research and Testing, Berlin, Germany; Department of Organic and Biomolecular Chemistry, University of Göttingen, Göttingen, Germany; and Institute for Advanced Study and Center of Integrated Protein Science Munich,
| | - Horst Kessler
- From the Department of Molecular Biology of Neuronal Signals, Max-Planck-Institute for Experimental Medicine, Göttingen, Germany; Departments of Hematology and Oncology and Diagnostic Radiology, University Medical Center Göttingen, Göttingen, Germany; BAM Federal Institute for Materials Research and Testing, Berlin, Germany; Department of Organic and Biomolecular Chemistry, University of Göttingen, Göttingen, Germany; and Institute for Advanced Study and Center of Integrated Protein Science Munich,
| | - Ute Resch-Genger
- From the Department of Molecular Biology of Neuronal Signals, Max-Planck-Institute for Experimental Medicine, Göttingen, Germany; Departments of Hematology and Oncology and Diagnostic Radiology, University Medical Center Göttingen, Göttingen, Germany; BAM Federal Institute for Materials Research and Testing, Berlin, Germany; Department of Organic and Biomolecular Chemistry, University of Göttingen, Göttingen, Germany; and Institute for Advanced Study and Center of Integrated Protein Science Munich,
| | - Frauke Alves
- From the Department of Molecular Biology of Neuronal Signals, Max-Planck-Institute for Experimental Medicine, Göttingen, Germany; Departments of Hematology and Oncology and Diagnostic Radiology, University Medical Center Göttingen, Göttingen, Germany; BAM Federal Institute for Materials Research and Testing, Berlin, Germany; Department of Organic and Biomolecular Chemistry, University of Göttingen, Göttingen, Germany; and Institute for Advanced Study and Center of Integrated Protein Science Munich,
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Luo S, Zhang E, Su Y, Cheng T, Shi C. A review of NIR dyes in cancer targeting and imaging. Biomaterials 2011; 32:7127-38. [PMID: 21724249 DOI: 10.1016/j.biomaterials.2011.06.024] [Citation(s) in RCA: 986] [Impact Index Per Article: 75.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2011] [Accepted: 06/09/2011] [Indexed: 11/29/2022]
Abstract
The development of multifunctional agents for simultaneous tumor targeting and near infrared (NIR) fluorescence imaging is expected to have significant impact on future personalized oncology owing to the very low tissue autofluorescence and high tissue penetration depth in the NIR spectrum window. Cancer NIR molecular imaging relies greatly on the development of stable, highly specific and sensitive molecular probes. Organic dyes have shown promising clinical implications as non-targeting agents for optical imaging in which indocyanine green has long been implemented in clinical use. Recently, significant progress has been made on the development of unique NIR dyes with tumor targeting properties. Current ongoing design strategies have overcome some of the limitations of conventional NIR organic dyes, such as poor hydrophilicity and photostability, low quantum yield, insufficient stability in biological system, low detection sensitivity, etc. This potential is further realized with the use of these NIR dyes or NIR dye-encapsulated nanoparticles by conjugation with tumor specific ligands (such as small molecules, peptides, proteins and antibodies) for tumor targeted imaging. Very recently, natively multifunctional NIR dyes that can preferentially accumulate in tumor cells without the need of chemical conjugation to tumor targeting ligands have been developed and these dyes have shown unique optical and pharmaceutical properties for biomedical imaging with superior signal-to-background contrast index. The main focus of this article is to provide a concise overview of newly developed NIR dyes and their potential applications in cancer targeting and imaging. The development of future multifunctional agents by combining targeting, imaging and even therapeutic routes will also be discussed. We believe these newly developed multifunctional NIR dyes will broaden current concept of tumor targeted imaging and hold promise to make an important contribution to the diagnosis and therapeutics for the treatment of cancer.
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Affiliation(s)
- Shenglin Luo
- Institute of Combined Injury, State Key Laboratory of Trauma, Burns and Combined Injury, College of Preventive Medicine, Third Military Medical University, Chongqing, China
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Pauli J, Grabolle M, Brehm R, Spieles M, Hamann FM, Wenzel M, Hilger I, Resch-Genger U. Suitable Labels for Molecular Imaging – Influence of Dye Structure and Hydrophilicity on the Spectroscopic Properties of IgG Conjugates. Bioconjug Chem 2011; 22:1298-308. [DOI: 10.1021/bc1004763] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Jutta Pauli
- BAM Bundesanstalt für Materialforschung und -prüfung, OE I.5, Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Markus Grabolle
- BAM Bundesanstalt für Materialforschung und -prüfung, OE I.5, Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Robert Brehm
- BAM Bundesanstalt für Materialforschung und -prüfung, OE I.5, Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Monika Spieles
- BAM Bundesanstalt für Materialforschung und -prüfung, OE I.5, Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Franziska M. Hamann
- Institut für Diagnostische und Interventionelle Radiologie des Klinikums der Friedrich-Schiller-Universität Jena (IDIR), Forschungszentrum Lobeda, Erlanger Allee 101, D-07747 Jena, Germany
| | | | - Ingrid Hilger
- Institut für Diagnostische und Interventionelle Radiologie des Klinikums der Friedrich-Schiller-Universität Jena (IDIR), Forschungszentrum Lobeda, Erlanger Allee 101, D-07747 Jena, Germany
| | - Ute Resch-Genger
- BAM Bundesanstalt für Materialforschung und -prüfung, OE I.5, Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
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Optical imaging of CCK₂/gastrin receptor-positive tumors with a minigastrin near-infrared probe. Invest Radiol 2011; 46:196-201. [PMID: 21139504 DOI: 10.1097/rli.0b013e3181fef020] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE A variety of tumors in different organs with good accessibility to near-infrared light express the cholecystokinin-2 (CCK₂)/gastrin receptor. Therefore, the applicability of fluorescence optical imaging was assessed using a novel peptide probe. MATERIALS AND METHODS This study was approved by the regional animal committee. Our optical peptide probe (DY-minigastrin) was synthesized by coupling a hemicyanine dye to a gastrin derivative peptide (minigastrin). In vitro CCK₂/gastrin receptor identification was performed in receptor-positive HT-29 and negative A-375 cells using flow cytometry, laser scanning microscopy, and macroscopic near-infrared fluorescent (NIRF) imaging. For in vivo studies, tumor cells were implanted into mice, and DY-minigastrin in presence or absence of nonlabeled minigastrin (control of signaling specificity) was applied intravenously. Fluorescence signals in tumors and organs were recorded and statistically analyzed. RESULTS Flow cytometry, laser scanning microscopy, and in vitro macroscopic imaging of cell pellets revealed a distinct accumulation of our minigastrin probe in HT-29 cells, showing distinct probe internalization. In vivo NIRF whole-body animal imaging, again, demonstrated a clear depiction of HT-29 tumors, which was reversed by blocking with nonlabeled minigastrin. Semi-quantitative fluorescence analysis and histologic observations were in agreement with these observations. A distinct probe organ distribution was observed. CONCLUSIONS Our observations indicate that DY-minigastrin-based NIRF optical imaging of CCK₂/gastrin receptor protein is feasible. Because of its widespread occurrence in different tumor types, endoscopic, laparoscopic, and tomographic receptor imaging could be accomplished in the near future.
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Hamann FM, Brehm R, Pauli J, Grabolle M, Frank W, Kaiser WA, Fischer D, Resch-Genger U, Hilger I. Controlled modulation of serum protein binding and biodistribution of asymmetric cyanine dyes by variation of the number of sulfonate groups. Mol Imaging 2011; 10:258-69. [PMID: 21521558 DOI: 10.2310/7290.2011.00005] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Accepted: 10/08/2010] [Indexed: 11/18/2022] Open
Abstract
To assess the suitability of asymmetric cyanine dyes for in vivo fluoro-optical molecular imaging, a comprehensive study on the influence of the number of negatively charged sulfonate groups governing the hydrophilicity of the DY-67x family of asymmetric cyanines was performed. Special attention was devoted to the plasma protein binding capacity and related pharmacokinetic properties. Four members of the DY-67x cyanine family composed of the same main chromophore, but substituted with a sequentially increasing number of sulfonate groups (n = 1-4; DY-675, DY-676, DY-677, DY-678, respectively), were incubated with plasma proteins dissolved in phosphate-buffered saline. Protein binding was assessed by absorption spectroscopy, gel electrophoresis, ultrafiltration, and dialysis. Distribution of dye in organs was studied by intraveneous injection of 62 nmol dye/kg body weight into mice (n = 12; up to 180 minutes postinjection) using whole-body near-infrared fluorescence imaging. Spectroscopic studies, gel electrophoresis, and dialysis demonstrated reduced protein binding with increasing number of sulfonate groups. The bovine serum albumin binding constant of the most hydrophobic dye, DY-675, is 18 times higher than that of the most hydrophilic fluorophore, DY-678. In vivo biodistribution analysis underlined a considerable influence of dye hydrophilicity on biodistribution and excretion pathways, with the more hydrophobic dyes, DY-675 and DY-676, accumulating in the liver, followed by strong fluorescence signals in bile and gut owing to accumulation in feces and comparatively hydrophilic DY-678-COOH accumulating in the bladder. Our results demonstrate the possibility of selectively controlling dye-protein interactions and, thus, biodistribution and excretion pathways via proper choice of the fluorophore's substitution pattern. This underlines the importance of structure-property relationships for fluorescent labels. Moreover, our data could provide the basis for the rationalization of future contrast agent developments.
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Affiliation(s)
- Franziska M Hamann
- Institute of Diagnostic and Interventional Radiology, University Hospital Jena, Jena, Germany.
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