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Tripepi M, Ferrauto G, Bennardi PO, Aime S, Delli Castelli D. Multilamellar LipoCEST Agents Obtained from Osmotic Shrinkage of Paramagnetically Loaded Giant Unilamellar Vescicles (GUVs). Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201912327] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Martina Tripepi
- Department of Molecular Biotechnology and Health SciencesUniversity of Torino Via Nizza 52 10126 Torino Italy
| | - Giuseppe Ferrauto
- Department of Molecular Biotechnology and Health SciencesUniversity of Torino Via Nizza 52 10126 Torino Italy
| | - Paolo Oronzo Bennardi
- Department of Molecular Biotechnology and Health SciencesUniversity of Torino Via Nizza 52 10126 Torino Italy
| | - Silvio Aime
- Department of Molecular Biotechnology and Health SciencesUniversity of Torino Via Nizza 52 10126 Torino Italy
| | - Daniela Delli Castelli
- Department of Molecular Biotechnology and Health SciencesUniversity of Torino Via Nizza 52 10126 Torino Italy
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2
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Tripepi M, Ferrauto G, Bennardi PO, Aime S, Delli Castelli D. Multilamellar LipoCEST Agents Obtained from Osmotic Shrinkage of Paramagnetically Loaded Giant Unilamellar Vescicles (GUVs). Angew Chem Int Ed Engl 2020; 59:2279-2283. [PMID: 31803970 DOI: 10.1002/anie.201912327] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Indexed: 12/16/2022]
Abstract
Moving from nano- to micro-systems may not just be a matter of scale, but it might imply changes in the properties of the systems that can open new routes for the development of efficient MRI contrast agents. This is the case reported in the present paper, where giant liposomes (giant unilamellar vesicles, GUVs) loaded with LnIII complexes have been studied as chemical exchange saturation transfer (CEST) MRI contrast agents. The comparison between nanosized liposomes (small unilamellar vesicles, SUVs) and GUVs sharing the same formulation led to differences that could not be accounted for only in terms of the increase in size (from 100-150 nm to 1-2 μm). Upon osmotic shrinkage, GUVs yielded a saturation-transfer effect three order of magnitude higher than SUVs consistent with the increase in vesicles volume. Confocal microscopy showed that the shrinkage of GUVs resulted in multilamellar particles whereas SUVs are known to yield asymmetrical, discoidal shape.
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Affiliation(s)
- Martina Tripepi
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Giuseppe Ferrauto
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Paolo Oronzo Bennardi
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Silvio Aime
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Daniela Delli Castelli
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
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3
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Jeong C, Noh I, Rejinold NS, Kim J, Jon S, Kim YC. Self-Assembled Supramolecular Bilayer Nanoparticles Composed of Near-Infrared Dye as a Theranostic Nanoplatform To Encapsulate Hydrophilic Drugs Effectively. ACS Biomater Sci Eng 2019; 6:474-484. [DOI: 10.1021/acsbiomaterials.9b01587] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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4
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Lee W, Im HJ. Theranostics Based on Liposome: Looking Back and Forward. Nucl Med Mol Imaging 2019; 53:242-246. [PMID: 31456856 PMCID: PMC6694360 DOI: 10.1007/s13139-019-00603-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 07/07/2019] [Accepted: 07/08/2019] [Indexed: 10/26/2022] Open
Abstract
Liposome is one of the oldest yet most successful nanomedicine platforms. Doxil®, PEGylated liposome loaded with doxorubicin (DOX), was approved by the FDA in 1995 for the treatment of AIDS-related Kaposi's sarcoma, and it was the first approval for nanomedicine. Since then, liposome-based therapeutics were approved for the treatment of various diseases and many clinical trials are underway. The success of the liposome-based therapeutics was due to following factors: (1) ease of synthesis, (2) biocompatibility, (3) the ability to load both hydrophilic and hydrophobic agents, and (4) long circulation property after application of polyethylene glycol (PEG). Recently, more functionalities are introduced to liposome platform, which are (1) in vivo imaging probes for optical, magnetic resonance imaging (MRI), positron emission tomography (PET), and single-photon emission computed tomography (SPECT), (2) pH and temperature-sensitive lipid moiety, and (3) novel agents for photodynamic and photothermal therapies (PDT, PTT). These conventional and newly tested advantages make the liposome to be one of the most promising nanoplatforms for theranostics.
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Affiliation(s)
- Wooseung Lee
- Department of Transdisciplinary Studies, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Republic of Korea
| | - Hyung-Jun Im
- Department of Transdisciplinary Studies, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Republic of Korea
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5
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Nik ME, Malaekeh-Nikouei B, Amin M, Hatamipour M, Teymouri M, Sadeghnia HR, Iranshahi M, Jaafari MR. Liposomal formulation of Galbanic acid improved therapeutic efficacy of pegylated liposomal Doxorubicin in mouse colon carcinoma. Sci Rep 2019; 9:9527. [PMID: 31267009 PMCID: PMC6606580 DOI: 10.1038/s41598-019-45974-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 06/17/2019] [Indexed: 12/31/2022] Open
Abstract
Galbanic acid (Gba), a sesquiterpene coumarin, with strong antiangiogenic activity could serve as an excellent anti-cancer agent. However, Gba is a poor water-solube which hampered its clinical application. In this study, a pegylated liposomal Gba (PLGba) with HSPC/Cholesterol/mPEG2000-DSPE (56.2, 38.3, 5.3% molar ratio) was developed by the thin film hydration plus extrusion and calcium acetate gradient remote loading method, to address the issue of poor Gba solubility. Moreover, an integrin-targeting ligand (RGD peptide, cyclo[Arg-Gly-Asp-D-Tyr-Cys]) was post-inserted into liposomes in order to increase Gba cell delivery. Using fluorescently-labeled model liposomes, it was found that the targeting could improve the integrin-mediated cellular uptake of the liposomes in vitro in human umbilical vein endothelial cells (HUVECs), and in vivo as evidenced by chicken chorioallantoic membrane angiogenesis (CAM) model. It also could enrich the liposome accumulation in C26 tumor. Interestingly, co-treatment with PLGba and pegylated liposomal doxorubicin (PLD, also known as Doxil®) had a synergistic and antagonistic antiproliferative effect on the C26 tumor cell line and the normal HUVEC, respectively. In C26 tumor bearing BALB/c mice, the PLGba and PLD combinatorial therapy improved the antitumor efficacy of the treatment as compared to those of single agents. This results have clear implications for cancer therapy.
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Affiliation(s)
- Maryam Ebrahimi Nik
- Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Bizhan Malaekeh-Nikouei
- Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohamadreza Amin
- Laboratory Experimental Surgical Oncology, Section Surgical Oncology, Department of Surgery, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Mahdi Hatamipour
- Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Manouchehr Teymouri
- Natural Products and Medicinal Plants Research Center, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Hamid Reza Sadeghnia
- Division of Neurocognitive Sciences, Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mehrdad Iranshahi
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahmoud Reza Jaafari
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran. .,Department of Pharmaceutical Nanotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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6
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Multifunctional Liposome: A Bright AIEgen-Lipid Conjugate with Strong Photosensitization. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809641] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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7
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Cai X, Mao D, Wang C, Kong D, Cheng X, Liu B. Multifunctional Liposome: A Bright AIEgen-Lipid Conjugate with Strong Photosensitization. Angew Chem Int Ed Engl 2018; 57:16396-16400. [DOI: 10.1002/anie.201809641] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 10/03/2018] [Indexed: 01/18/2023]
Affiliation(s)
- Xiaolei Cai
- Department of Chemical and Biomolecular Engineering; National University of Singapore; 4 Engineering Drive 4 117585 Singapore Singapore
| | - Duo Mao
- Department of Chemical and Biomolecular Engineering; National University of Singapore; 4 Engineering Drive 4 117585 Singapore Singapore
| | - Can Wang
- Department of Chemical and Biomolecular Engineering; National University of Singapore; 4 Engineering Drive 4 117585 Singapore Singapore
| | - Deling Kong
- State Key Laboratory of Medicinal Chemical Biology; Key Laboratory of Bioactive Materials; Ministry of Education and College of Life Sciences; Nankai University; Tianjin 300071 China
| | - Xiamin Cheng
- Department of Chemical and Biomolecular Engineering; National University of Singapore; 4 Engineering Drive 4 117585 Singapore Singapore
- Institute of Advanced Synthesis; School of Chemistry and Molecular Engineering; Jiangsu National Synergetic Innovation Centre for Advanced Materials; Nanjing Tech University; Nanjing 211816 China
| | - Bin Liu
- Department of Chemical and Biomolecular Engineering; National University of Singapore; 4 Engineering Drive 4 117585 Singapore Singapore
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8
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Ardizzone A, Kurhuzenkau S, Illa-Tuset S, Faraudo J, Bondar M, Hagan D, Van Stryland EW, Painelli A, Sissa C, Feiner N, Albertazzi L, Veciana J, Ventosa N. Nanostructuring Lipophilic Dyes in Water Using Stable Vesicles, Quatsomes, as Scaffolds and Their Use as Probes for Bioimaging. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1703851. [PMID: 29573545 DOI: 10.1002/smll.201703851] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 01/17/2018] [Indexed: 06/08/2023]
Abstract
A new kind of fluorescent organic nanoparticles (FONs) is obtained using quatsomes (QSs), a family of nanovesicles proposed as scaffolds for the nanostructuration of commercial lipophilic carbocyanines (1,1'-dioctadecyl-3,3,3',3'-tetramethyl-indocarbocyanine perchlorate (DiI), 1,1'-dioctadecyl-3,3,3',3'-tetramethyl-indodicarbocyanine perchlorate (DiD), and 1,1'-dioctadecyl-3,3,3',3'-tetramethyl-indotricarbocyanine iodide (DiR)) in aqueous media. The obtained FONs, prepared by a CO2 -based technology, show excellent colloidal- and photostability, outperforming other nanoformulations of the dyes, and improve the optical properties of the fluorophores in water. Molecular dynamics simulations provide an atomistic picture of the disposition of the dyes within the membrane. The potential of QSs for biological imaging is demonstrated by performing superresolution microscopy of the DiI-loaded vesicles in vitro and in cells. Therefore, fluorescent QSs constitute an appealing nanomaterial for bioimaging applications.
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Affiliation(s)
- Antonio Ardizzone
- Institut Ciencia Materials Barcelona (ICMAB-CSIC)-CIBER-BBN, Campus Universitari de Bellaterra, 08193, Cerdanyola, Spain
| | - Siarhei Kurhuzenkau
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area Delle Scienze 17/A, 43124, Parma, Italy
| | | | - Jordi Faraudo
- Institut Ciencia Materials Barcelona (ICMAB-CSIC)-CIBER-BBN, Campus Universitari de Bellaterra, 08193, Cerdanyola, Spain
| | - Mykhailo Bondar
- Institute of Physics, National Academy of Sciences of Ukraine, Prospect Nauky 46, Kyiv, 03028, Ukraine
| | - David Hagan
- The College of Optics and Photonics (CREOL), University of Central Florida, P.O. Box 162700, Orlando, FL, 32816-2700, USA
| | - Eric W Van Stryland
- The College of Optics and Photonics (CREOL), University of Central Florida, P.O. Box 162700, Orlando, FL, 32816-2700, USA
| | - Anna Painelli
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area Delle Scienze 17/A, 43124, Parma, Italy
| | - Cristina Sissa
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area Delle Scienze 17/A, 43124, Parma, Italy
| | - Natalia Feiner
- Institute for Bioengineering of Catalonia (IBEC), Parc Cientìfic de Barcelona (PCB), 08028, Barcelona, Spain
| | - Lorenzo Albertazzi
- Institute for Bioengineering of Catalonia (IBEC), Parc Cientìfic de Barcelona (PCB), 08028, Barcelona, Spain
| | - Jaume Veciana
- Institut Ciencia Materials Barcelona (ICMAB-CSIC)-CIBER-BBN, Campus Universitari de Bellaterra, 08193, Cerdanyola, Spain
| | - Nora Ventosa
- Institut Ciencia Materials Barcelona (ICMAB-CSIC)-CIBER-BBN, Campus Universitari de Bellaterra, 08193, Cerdanyola, Spain
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9
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Nam M, Lee J, Lee KY, Kim J. Sequential Targeted Delivery of Liposomes to Ischemic Tissues by Controlling Blood Vessel Permeability. ACS Biomater Sci Eng 2018; 4:532-538. [PMID: 33418742 DOI: 10.1021/acsbiomaterials.7b00815] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Delivery systems for therapeutic angiogenesis that deliver angiogenic factors to ischemic tissues have recently been fabricated. However, these systems are designed for surgical implantation or multiple local injections which can cause pain and potential physical burden in patients. Here, we propose a minimally invasive sequential nanoparticle-mediated delivery strategy for ischemic tissue using a murine hindlimb ischemic model. Intravenously injected liposomes that encapsulate VEGF, an angiogenic factor, first target the ischemic sites via the enhanced permeability and retention (EPR) effect in early stages of ischemia. VEGF released from the targeted liposomes maintains the blood vessel permeability for a longer period of time compared to the delivery of empty liposomes. This first nanoparticle-mediated delivery of VEGF to the ischemic site enables extending the temporal window of leaky blood vessel up to 7 days so that the second liposomes could be targeted to the ischemic sites via EPR effect. This strategy will provide opportunities for the targeted delivery of other vessel maturation agents loaded in nanoparticles to ischemic tissue.
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Affiliation(s)
- Myungjoo Nam
- School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
| | - Jangwook Lee
- Department of Bioengineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Kuen Yong Lee
- Department of Bioengineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Jaeyun Kim
- School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea.,Department of Health Sciences and Technology, Samsung Advanced Institute for Health Science & Technology (SAIHST), Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea.,Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
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10
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Grandhi TSP, Rege K. Design, Synthesis, and Functionalization of Nanomaterials for Therapeutic Drug Delivery. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 811:157-82. [DOI: 10.1007/978-94-017-8739-0_9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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11
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Toyota T, Fujito H, Suganami A, Ouchi T, Ooishi A, Aoki A, Onoue K, Muraki Y, Madono T, Fujinami M, Tamura Y, Hayashi H. Near-infrared-fluorescence imaging of lymph nodes by using liposomally formulated indocyanine green derivatives. Bioorg Med Chem 2013; 22:721-7. [PMID: 24393719 DOI: 10.1016/j.bmc.2013.12.026] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 12/05/2013] [Accepted: 12/07/2013] [Indexed: 12/27/2022]
Abstract
Liposomally formulated indocyanine green (LP-ICG) has drawn much attention as a highly sensitive near-infrared (NIR)-fluorescence probe for tumors or lymph nodes in vivo. We synthesized ICG derivatives tagged with alkyl chains (ICG-Cn), and we examined NIR-fluorescence imaging for lymph nodes in the lower extremities of mice by using liposomally formulated ICG-Cn (LP-ICG-Cn) as well as conventional liposomally formulated ICG (LP-ICG) and ICG. Analysis with a noninvasive preclinical NIR-fluorescence imaging system revealed that LP-ICG-Cn accumulates in only the popliteal lymph node 1h after injection into the footpad, whereas LP-ICG and ICG accumulate in the popliteal lymph node and other organs like the liver. This result indicates that LP-ICG-Cn is a useful NIR-fluorescence probe for noninvasive in vivo bioimaging, especially for the sentinel lymph node.
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Affiliation(s)
- Taro Toyota
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan; Department of Bioinformatics, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan; Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
| | - Hiromichi Fujito
- Department of Medical System Engineering, Faculty of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Akiko Suganami
- Department of Bioinformatics, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - Tomoki Ouchi
- Division of Nanoscience, Graduate School of Advanced Integration Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Aki Ooishi
- Division of Nanoscience, Graduate School of Advanced Integration Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Akira Aoki
- Yamada Chemical Co. Ltd, 1-1 Kamichoshi-cho, Kamitoba, Minami-ku, Kyoto 601-8105, Japan
| | - Kazutaka Onoue
- Yamada Chemical Co. Ltd, 1-1 Kamichoshi-cho, Kamitoba, Minami-ku, Kyoto 601-8105, Japan
| | - Yutaka Muraki
- Yamada Chemical Co. Ltd, 1-1 Kamichoshi-cho, Kamitoba, Minami-ku, Kyoto 601-8105, Japan
| | - Tomoyuki Madono
- Yamada Chemical Co. Ltd, 1-1 Kamichoshi-cho, Kamitoba, Minami-ku, Kyoto 601-8105, Japan
| | - Masanori Fujinami
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Yutaka Tamura
- Department of Bioinformatics, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - Hideki Hayashi
- Center for Frontier Medical Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan; Department of Frontier Surgery, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan.
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12
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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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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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Kumar R, Kulkarni A, Nagesha DK, Sridhar S. In vitro evaluation of theranostic polymeric micelles for imaging and drug delivery in cancer. Theranostics 2012; 2:714-22. [PMID: 22896773 PMCID: PMC3418926 DOI: 10.7150/thno.3927] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Accepted: 01/14/2012] [Indexed: 11/05/2022] Open
Abstract
For the past decade engineered nanoplatforms have seen a momentous progress in developing a multimodal theranostic formulation which can be simultaneously used for imaging and therapy. In this report we describe the synthesis and application of theranostic phospholipid based polymeric micelles for optical fluorescence imaging and controlled drug delivery. CdSe quantum dots (QDs) and anti-cancer drug, doxorubicin (Dox), were co-encapsulated into the hydrophobic core of the micelles. The micelles are characterized using optical spectroscopy for characteristic absorbance and fluorescence features of QDs and Dox. TEM and DLS studies yielded a size of <50 nm for the micellar formulations with very narrow size distribution. A sustained release of the drug was observed from the co-encapsulated micellar formulation. In vitro optical fluorescence imaging and cytotoxicity studies with HeLa cell line demonstrated the potential of these micellar systems as efficient optical imaging and therapeutic probes.
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15
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Imaging of Cells and Nanoparticles: Implications for Drug Delivery to the Brain. Pharm Res 2012; 29:3213-34. [DOI: 10.1007/s11095-012-0826-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Accepted: 07/05/2012] [Indexed: 01/03/2023]
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16
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Ponomarev ED, Veremeyko T, Weiner HL. MicroRNAs are universal regulators of differentiation, activation, and polarization of microglia and macrophages in normal and diseased CNS. Glia 2012; 61:91-103. [PMID: 22653784 DOI: 10.1002/glia.22363] [Citation(s) in RCA: 251] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 05/02/2012] [Accepted: 05/04/2012] [Indexed: 12/17/2022]
Abstract
MicroRNAs (miRNAs) are a class of small (∼22 nucleotides) noncoding RNAs involved in the regulation of gene expression at the post-translational level. It is estimated that 30-90% of human genes are regulated by miRNAs, which makes these molecules of great importance for cell growth, activation, and differentiation. Microglia is CNS-resident cells of a myeloid lineage that play an important role in immune surveillance and are actively involved in many neurologic pathologies. Although the exact origin of microglia remains enigmatic, it is established that primitive macrophages from a yolk sac populate the brain and spinal cord in normal conditions throughout development. During various pathological events such as neuroinflammation, bone marrow derived myeloid cells also migrate into the CNS. Within the CNS, both primitive macrophages from the yolk sac and bone marrow derived myeloid cells acquire a specific phenotype upon interaction with other cell types within the CNS microenvironment. The factors that drive differentiation of progenitors into microglia and control the state of activation of microglia and bone marrow-derived myeloid cells within the CNS are not well understood. In this review we will summarize the role of miRNAs during activation and differentiation of myeloid cells. The role of miR-124 in the adaptation of microglia and macrophages to the CNS microenvironment will be further discussed. We will also summarize the role of miRNAs as modulators of activation of microglia and microphages. Finally, we will describe the role of miR-155 and miR-124 in the polarization of macrophages towards classically and alternatively activated phenotypes.
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Affiliation(s)
- Eugene D Ponomarev
- Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
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17
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Mérian J, Gravier J, Navarro F, Texier I. Fluorescent nanoprobes dedicated to in vivo imaging: from preclinical validations to clinical translation. Molecules 2012; 17:5564-91. [PMID: 22576228 PMCID: PMC6268987 DOI: 10.3390/molecules17055564] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Revised: 05/06/2012] [Accepted: 05/07/2012] [Indexed: 11/30/2022] Open
Abstract
With the fast development, in the last ten years, of a large choice of set-ups dedicated to routine in vivo measurements in rodents, fluorescence imaging techniques are becoming essential tools in preclinical studies. Human clinical uses for diagnostic and image-guided surgery are also emerging. In comparison to low-molecular weight organic dyes, the use of fluorescent nanoprobes can improve both the signal sensitivity (better in vivo optical properties) and the fluorescence biodistribution (passive “nano” uptake in tumours for instance). A wide range of fluorescent nanoprobes have been designed and tested in preclinical studies for the last few years. They will be reviewed and discussed considering the obstacles that need to be overcome for their potential everyday use in clinics. The conjugation of fluorescence imaging with the benefits of nanotechnology should open the way to new medical applications in the near future.
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Affiliation(s)
| | | | | | - Isabelle Texier
- Author to whom correspondence should be addressed; ; Tel.: +33-438-784-670; Fax: +33-438-785-787
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18
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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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19
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Barandeh F, Nguyen PL, Kumar R, Iacobucci GJ, Kuznicki ML, Kosterman A, Bergey EJ, Prasad PN, Gunawardena S. Organically modified silica nanoparticles are biocompatible and can be targeted to neurons in vivo. PLoS One 2012; 7:e29424. [PMID: 22238611 PMCID: PMC3250438 DOI: 10.1371/journal.pone.0029424] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Accepted: 11/28/2011] [Indexed: 11/29/2022] Open
Abstract
The application of nanotechnology in biological research is beginning to have a major impact leading to the development of new types of tools for human health. One focus of nanobiotechnology is the development of nanoparticle-based formulations for use in drug or gene delivery systems. However most of the nano probes currently in use have varying levels of toxicity in cells or whole organisms and therefore are not suitable for in vivo application or long-term use. Here we test the potential of a novel silica based nanoparticle (organically modified silica, ORMOSIL) in living neurons within a whole organism. We show that feeding ORMOSIL nanoparticles to Drosophila has no effect on viability. ORMOSIL nanoparticles penetrate into living brains, neuronal cell bodies and axonal projections. In the neuronal cell body, nanoparticles are present in the cytoplasm, but not in the nucleus. Strikingly, incorporation of ORMOSIL nanoparticles into the brain did not induce aberrant neuronal death or interfered with normal neuronal processes. Our results in Drosophila indicate that these novel silica based nanoparticles are biocompatible and not toxic to whole organisms, and has potential for the development of long-term applications.
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Affiliation(s)
- Farda Barandeh
- Department of Biological Sciences, The State University of New York at Buffalo, Buffalo, New York, United States of America
| | - Phuong-Lan Nguyen
- Department of Biological Sciences, The State University of New York at Buffalo, Buffalo, New York, United States of America
| | - Rajiv Kumar
- Institute of Lasers, Photonics and Biophotonics, The State University of New York at Buffalo, Buffalo, New York, United States of America
| | - Gary J. Iacobucci
- Department of Biological Sciences, The State University of New York at Buffalo, Buffalo, New York, United States of America
| | - Michelle L. Kuznicki
- Department of Biological Sciences, The State University of New York at Buffalo, Buffalo, New York, United States of America
| | - Andrew Kosterman
- Department of Biological Sciences, The State University of New York at Buffalo, Buffalo, New York, United States of America
| | - Earl J. Bergey
- Institute of Lasers, Photonics and Biophotonics, The State University of New York at Buffalo, Buffalo, New York, United States of America
| | - Paras N. Prasad
- Institute of Lasers, Photonics and Biophotonics, The State University of New York at Buffalo, Buffalo, New York, United States of America
| | - Shermali Gunawardena
- Department of Biological Sciences, The State University of New York at Buffalo, Buffalo, New York, United States of America
- Institute of Lasers, Photonics and Biophotonics, The State University of New York at Buffalo, Buffalo, New York, United States of America
- * E-mail:
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20
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Patsenker LD, Tatarets AL, Povrozin YA, Terpetschnig EA. Long-wavelength fluorescence lifetime labels. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/s12566-011-0025-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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21
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Gravier J, Navarro FP, Delmas T, Mittler F, Couffin AC, Vinet F, Texier I. Lipidots: competitive organic alternative to quantum dots for in vivo fluorescence imaging. JOURNAL OF BIOMEDICAL OPTICS 2011; 16:096013. [PMID: 21950927 DOI: 10.1117/1.3625405] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The use of fluorescent nanostructures can bring several benefits on the signal to background ratio for in vitro microscopy, in vivo small animal imaging, and image-guided surgery. Fluorescent quantum dots (QDs) display outstanding optical properties, with high brightness and low photobleaching rate. However, because of their toxic element core composition and their potential long term retention in reticulo-endothelial organs such as liver, their in vivo human applications seem compromised. The development of new dye-loaded (DiO, DiI, DiD, DiR, and Indocyanine Green (ICG)) lipid nanoparticles for fluorescence imaging (lipidots) is described here. Lipidot optical properties quantitatively compete with those of commercial QDs (QTracker(®)705). Multichannel in vivo imaging of lymph nodes in mice is demonstrated for doses as low as 2 pmols of particles. Along with their optical properties, fluorescent lipidots display very low cytotoxicity (IC(50) > 75 nM), which make them suitable tools for in vitro, and especially in vivo, fluorescence imaging applications.
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Affiliation(s)
- Julien Gravier
- CEA Grenoble, LETI-DTBS, MINATEC Campus, Grenoble, 38054 France
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22
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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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23
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Yang S, Lu D, Tian L, He F, Chen G, Shen F, Xu H, Ma Y. Stable water-dispersed organic nanoparticles: preparation, optical properties, and cell imaging application. NANOSCALE 2011; 3:2261-2267. [PMID: 21487623 DOI: 10.1039/c1nr10030k] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Water-dispersed organic nanoparticles (NPs) constructed by the conjugated molecule 2,5,2',5'-tetra(4'-N,N-diphenylaminostyryl)biphenyl (DPA-TSB) with a high luminescence and large two-photon absorption (TPA) section were fabricated via the reprecipitation method. The average size of the NPs can be controlled from 40 nm to 80 nm by adjusting the reprecipitation conditions. The NPs in water dispersions showed high aggregative and optical stability, which were due to contributions from the special cruciform configuration and amorphous nature of DPA-TSB molecules. The cellular uptake behavior of DPA-TSB NPs was investigated to show their cell staining capabilities as nanoprobes using a confocal microscopy test in vitro. The results demonstrated that DPA-TSB NPs were readily internalized into cytoplasm with no apparent toxicity for up to 24 h, implying excellent imaging capabilities.
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Affiliation(s)
- Shumin Yang
- State Key Lab of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, PR China
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24
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Busch C, Passon M, Wenzel M, Socher I, Kaiser WA, Hilger I. Detection of Leukotriene Receptor CysLT
1
R in Inflammatory Diseases by Molecular Imaging with Near-Infrared Fluorescence-Based Contrast Agents. Mol Imaging 2011. [DOI: 10.2310/7290.2010.00023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Corinna Busch
- From the Institute of Diagnostic and Interventional Radiology, Department of Experimental Radiology, University Hospital Jena, Jena, Germany, and Dyomics GmbH, Jena, Germany
| | - Marta Passon
- From the Institute of Diagnostic and Interventional Radiology, Department of Experimental Radiology, University Hospital Jena, Jena, Germany, and Dyomics GmbH, Jena, Germany
| | - Matthias Wenzel
- From the Institute of Diagnostic and Interventional Radiology, Department of Experimental Radiology, University Hospital Jena, Jena, Germany, and Dyomics GmbH, Jena, Germany
| | - Ines Socher
- From the Institute of Diagnostic and Interventional Radiology, Department of Experimental Radiology, University Hospital Jena, Jena, Germany, and Dyomics GmbH, Jena, Germany
| | - Werner A. Kaiser
- From the Institute of Diagnostic and Interventional Radiology, Department of Experimental Radiology, University Hospital Jena, Jena, Germany, and Dyomics GmbH, Jena, Germany
| | - Ingrid Hilger
- From the Institute of Diagnostic and Interventional Radiology, Department of Experimental Radiology, University Hospital Jena, Jena, Germany, and Dyomics GmbH, Jena, Germany
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25
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Bürgel SC, Guillaume-Gentil O, Zheng L, Vörös J, Bally M. Zirconium ion mediated formation of liposome multilayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:10995-11002. [PMID: 20507172 DOI: 10.1021/la9047566] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Phospholipid vesicles have attracted considerable interest as a platform for a variety of biomolecular binding assays, especially in the area of membrane protein sensing. The development of liposome-based biosensors widely relies on the availability of simple and efficient protocols for their surface immobilization. We present a novel approach toward the creation of three-dimensional phospholipid vesicle constructs using multivalent zirconium ions as linkers between the liposomes. Such three-dimensional sensing platforms are likely to play a key role in the development of biosensing devices with increased loading capacity and sensitivity. After demonstrating the affinity of Zr(4+) toward the phospholipids, we formed vesicle multilayers by sequential injections of solutions containing either liposomes or ZrOCl(2). In situ adlayer characterization was carried out by optical waveguide lightmode spectroscopy (OWLS) and quartz crystal microbalance with dissipation (QCM-D) measurements while imaging was performed by atomic force microscopy (AFM) and fluorescence microscopy. Multilayers were successfully constructed, and as demonstrated in a model fluorescence-based biomolecular binding assay, the sensor's loading capacity was increased. Furthermore, we observed that lipid exchange between the vesicles is promoted in the presence of Zr(4+) and that addition of a phosphate-containing buffer leads to adlayer loosening and creation of lipidic tubular structures. The approach presented here could be applied to the study of membrane proteins in a highly sensitive manner due to the increased surface area or to produce functional coatings for controlled drug release and host response.
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Affiliation(s)
- Sebastian C Bürgel
- Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH and University Zurich, 8092 Zurich, Switzerland
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26
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Kumar R, Roy I, Ohulchanskky TY, Vathy LA, Bergey EJ, Sajjad M, Prasad PN. In vivo biodistribution and clearance studies using multimodal organically modified silica nanoparticles. ACS NANO 2010; 4:699-708. [PMID: 20088598 PMCID: PMC2827663 DOI: 10.1021/nn901146y] [Citation(s) in RCA: 385] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Successful translation of the use of nanoparticles from laboratories to clinics requires exhaustive and elaborate studies involving the biodistribution, clearance, and biocompatibility of nanoparticles for in vivo biomedical applications. We report here the use of multimodal organically modified silica (ORMOSIL) nanoparticles for in vivo bioimaging, biodistribution, clearance, and toxicity studies. We have synthesized ORMOSIL nanoparticles with diameters of 20-25 nm, conjugated with near-infrared (NIR) fluorophores and radiolabeled them with (124)I, for optical and PET imaging in vivo. The biodistribution of the nontargeted nanoparticles was studied in nontumored nude mice by optical fluorescence imaging, as well by measuring the radioactivity from harvested organs. Biodistribution studies showed a greater accumulation of nanoparticles in liver, spleen, and stomach than in kidney, heart, and lungs. The clearance studies carried out over a period of 15 days indicated hepatobiliary excretion of the nanoparticles. Selected tissues were analyzed for any potential toxicity by histological analysis, which confirmed the absence of any adverse effect or any other abnormalities in the tissues. The results demonstrate that these multimodal nanoparticles have potentially ideal attributes for use as biocompatible probes for in vivo imaging.
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Affiliation(s)
- Rajiv Kumar
- Institute for Lasers, Photonics and Biophotonics, The State University of New York at Buffalo, Buffalo, NY 14260
| | - Indrajit Roy
- Institute for Lasers, Photonics and Biophotonics, The State University of New York at Buffalo, Buffalo, NY 14260
| | - Tymish Y. Ohulchanskky
- Institute for Lasers, Photonics and Biophotonics, The State University of New York at Buffalo, Buffalo, NY 14260
| | - Lisa A. Vathy
- Institute for Lasers, Photonics and Biophotonics, The State University of New York at Buffalo, Buffalo, NY 14260
| | - Earl J. Bergey
- Institute for Lasers, Photonics and Biophotonics, The State University of New York at Buffalo, Buffalo, NY 14260
| | - Munawwar Sajjad
- Department of Nuclear Medicine, The State University of New York at Buffalo, Buffalo, NY 14260
| | - Paras N Prasad
- Institute for Lasers, Photonics and Biophotonics, The State University of New York at Buffalo, Buffalo, NY 14260
- Corresponding Author:
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27
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Texier I, Goutayer M, Da Silva A, Guyon L, Djaker N, Josserand V, Neumann E, Bibette J, Vinet F. Cyanine-loaded lipid nanoparticles for improved in vivo fluorescence imaging. JOURNAL OF BIOMEDICAL OPTICS 2009; 14:054005. [PMID: 19895107 DOI: 10.1117/1.3213606] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Fluorescence is a very promising radioactive-free technique for functional imaging in small animals and, in the future, in humans. However, most commercial near-infrared dyes display poor optical properties, such as low fluorescence quantum yields and short fluorescence lifetimes. In this paper, we explore whether the encapsulation of infrared cyanine dyes within the core of lipid nanoparticles (LNPs) could improve their optical properties. Lipophilic dialkylcarbocyanines DiD and DiR are loaded very efficiently in 30-35-nm-diam lipid droplets stabilized in water by surfactants. No significant fluorescence autoquenching is observed up to 53 dyes per particle. Encapsulated in LNP, which are stable for more than one year at room temperature in HBS buffer (HEPES 0.02 M, EDTA 0.01 M, pH 5.5), DiD and DiR display far improved fluorescence quantum yields Phi (respectively, 0.38 and 0.25) and longer fluorescence lifetimes tau (respectively, 1.8 and 1.1 ns) in comparison to their hydrophilic counterparts Cy5 (Phi=0.28, tau=1.0 ns) and Cy7 (Phi=0.13, tau=0.57 ns). Moreover, dye-loaded LNPs are able to accumulate passively in various subcutaneous tumors in mice, thanks to the enhanced permeability and retention effect. These new fluorescent nanoparticles therefore appear as very promising labels for in vivo fluorescence imaging.
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Affiliation(s)
- Isabelle Texier
- Commissariat a l'Energie Atomique, LETI-DTBS, 17 rue des Martyrs, Grenoble Cedex, 38054, France.
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28
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Kumar R, Ohulchanskyy TY, Roy I, Gupta SK, Borek C, Thompson ME, Prasad PN. Near-infrared phosphorescent polymeric nanomicelles: efficient optical probes for tumor imaging and detection. ACS APPLIED MATERIALS & INTERFACES 2009; 1:1474-81. [PMID: 20355951 PMCID: PMC3681954 DOI: 10.1021/am9001293] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We report a formulation of near-infrared (near-IR) phosphorescent polymeric nanomicelles and their use for in vivo high-contrast optical imaging, targeting, and detection of tumors in small animals. Near-IR phosphorescent molecules of Pt(II)-tetraphenyltetranaphthoporphyrin (Pt(TPNP)) were found to maintain their near-IR phosphorescence properties when encapsulated into phospholipid nanomicelles. The prepared phosphorescent micelles are of approximately 100 nm size and are highly stable in aqueous suspensions. A large spectral separation between the Pt(TPNP) absorption, with a peak at approximately 700 nm, and its phosphorescence emission, with a peak at approximately 900 nm, allows a dramatic decrease in the level of background autofluorescence and scattered excitation light in the near-IR spectral range, where the signal from the phosphorescent probe is observed. In vivo animal imaging with subcutaneously xenografted tumor-bearing mice has resulted in high contrast optical images, indicating highly specific accumulation of the phosphorescent micelles into tumors. Using optical imaging with near-IR phosphorescent nanomicelles, detection of smaller, visually undetectable tumors has also been demonstrated.
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Affiliation(s)
- Rajiv Kumar
- Institute for Lasers, Photonics and Biophotonics, SUNY at Buffalo, Buffalo NY 14226
| | | | - Indrajit Roy
- Institute for Lasers, Photonics and Biophotonics, SUNY at Buffalo, Buffalo NY 14226
| | - Sandesh K. Gupta
- Institute for Lasers, Photonics and Biophotonics, SUNY at Buffalo, Buffalo NY 14226
| | - Carsten Borek
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089
| | - Mark E. Thompson
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089
| | - Paras N. Prasad
- Institute for Lasers, Photonics and Biophotonics, SUNY at Buffalo, Buffalo NY 14226
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