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Chacko N, Motiei M, Suryakant JS, Firer M, Ankri R. Au nanodyes as enhanced contrast agents in wide field near infrared fluorescence lifetime imaging. Discov Nano 2024; 19:18. [PMID: 38270794 PMCID: PMC10810770 DOI: 10.1186/s11671-024-03958-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 01/14/2024] [Indexed: 01/26/2024]
Abstract
The near-infrared (NIR) range of the electromagnetic (EM) spectrum offers a nearly transparent window for imaging tissue. Despite the significant potential of NIR fluorescence-based imaging, its establishment in basic research and clinical applications remains limited due to the scarcity of fluorescent molecules with absorption and emission properties in the NIR region, especially those suitable for biological applications. In this study, we present a novel approach by combining the widely used IRdye 800NHS fluorophore with gold nanospheres (GNSs) and gold nanorods (GNRs) to create Au nanodyes, with improved quantum yield (QY) and distinct lifetimes. These nanodyes exhibit varying photophysical properties due to the differences in the separation distance between the dye and the gold nanoparticles (GNP). Leveraging a rapid and highly sensitive wide-field fluorescence lifetime imaging (FLI) macroscopic set up, along with phasor based analysis, we introduce multiplexing capabilities for the Au nanodyes. Our approach showcases the ability to differentiate between NIR dyes with very similar, short lifetimes within a single image, using the combination of Au nanodyes and wide-field FLI. Furthermore, we demonstrate the uptake of Au nanodyes by mineral-oil induced plasmacytomas (MOPC315.bm) cells, indicating their potential for in vitro and in vivo applications.
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Affiliation(s)
- Neelima Chacko
- Department of Physics, Faculty of Natural Science, Ariel University, 40700, Ariel, Israel
| | - Menachem Motiei
- Faculty of Engineering, The Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, 5290002, Ramat Gan, Israel
| | - Jadhav Suchita Suryakant
- Department of Chemical Engineering, Faculty of Engineering, Ariel University, 40700, Ariel, Israel
| | - Michael Firer
- Department of Chemical Engineering, Faculty of Engineering, Ariel University, 40700, Ariel, Israel
| | - Rinat Ankri
- Department of Physics, Faculty of Natural Science, Ariel University, 40700, Ariel, Israel.
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2
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Tzror-Azankot C, Anaki A, Sadan T, Motiei M, Popovtzer R. Phosphate-Trapping Liposomes for Long-Term Management of Hyperphosphatemia. Materials (Basel) 2022; 15:ma15217779. [PMID: 36363372 PMCID: PMC9654424 DOI: 10.3390/ma15217779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 10/25/2022] [Accepted: 11/02/2022] [Indexed: 05/24/2023]
Abstract
Hyperphosphatemia is a typical complication of end-stage renal disease, characterized by elevated and life-threatening serum phosphate levels. Hemodialysis does not enable sufficient clearance of phosphate, due to slow cell-to-plasma kinetics of phosphate ions; moreover, dietary restrictions and conventional treatment with oral phosphate binders have low success rates, together with adverse effects. Here, we developed a new concept of phosphate-trapping liposomes, to improve and prolong the control over serum phosphate levels. We designed liposomes modified with polyethylene glycol and encapsulated with the phosphate binder ferric citrate (FC liposomes). These liposomes were found to trap phosphate ions in their inner core, and thereby lower free phosphate ion concentrations in solution and in serum. The FC liposomes showed higher phosphate binding ability as phosphate concentrations increased. Moreover, these liposomes showed a time-dependent increase in uptake of phosphate, up to 25 h in serum. Thus, our findings demonstrate effective long-term phosphate trapping by FC liposomes, indicating their potential to reduce serum phosphate toxicity and improve current management of hyperphosphatemia.
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3
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Betzer O, Gao Y, Shamul A, Motiei M, Sadan T, Yehuda R, Atkins A, Cohen CJ, Shen M, Shi X, Popovtzer R. Multifunctional nanoprobe for real-time in vivo monitoring of T cell activation. Nanomedicine 2022; 46:102596. [PMID: 36031044 DOI: 10.1016/j.nano.2022.102596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 08/03/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
Genetically engineered T cells are a powerful new modality for cancer immunotherapy. However, their clinical application for solid tumors is challenging, and crucial knowledge on cell functionality in vivo is lacking. Here, we fabricated a nanoprobe composed of dendrimers incorporating a calcium sensor and gold nanoparticles, for dual-modal monitoring of engineered T cells within a solid tumor. T cells engineered to express a melanoma-specific T-cell receptor and loaded with the nanoprobe were longitudinally monitored within melanoma xenografts in mice. Fluorescent imaging of the nanoprobe's calcium sensor revealed increased intra-tumoral activation of the T cells over time, up to 24 h. Computed tomography imaging of the nanoprobe's gold nanoparticles revealed the cells' intra-tumoral distribution pattern. Quantitative analysis revealed the intra-tumoral T cell quantities. Thus, this nanoprobe reveals intra-tumoral persistence, penetration and functional status of genetically engineered T cells, which can advance T cell-based immunotherapy and promote next-generation live cell imaging.
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Affiliation(s)
- Oshra Betzer
- The Alexander Kofkin Faculty of Engineering, Bar-Ilan University, Ramat Gan 5290002, Israel; Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Yue Gao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, International Joint Laboratory for Advanced Fiber and Low-dimension Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, PR China
| | - Astar Shamul
- The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Menachem Motiei
- The Alexander Kofkin Faculty of Engineering, Bar-Ilan University, Ramat Gan 5290002, Israel; Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Tamar Sadan
- The Alexander Kofkin Faculty of Engineering, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Ronen Yehuda
- The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Ayelet Atkins
- The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Cyrille J Cohen
- The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Mingwu Shen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, International Joint Laboratory for Advanced Fiber and Low-dimension Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, PR China
| | - Xiangyang Shi
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, International Joint Laboratory for Advanced Fiber and Low-dimension Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, PR China.
| | - Rachela Popovtzer
- The Alexander Kofkin Faculty of Engineering, Bar-Ilan University, Ramat Gan 5290002, Israel; Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat Gan 5290002, Israel.
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4
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Gal O, Betzer O, Rousso-Noori L, Sadan T, Motiei M, Nikitin M, Friedmann-Morvinski D, Popovtzer R, Popovtzer A. Antibody Delivery into the Brain by Radiosensitizer Nanoparticles for Targeted Glioblastoma Therapy. J Nanotheranostics 2022; 3:177-188. [PMID: 36324626 PMCID: PMC7613745 DOI: 10.3390/jnt3040012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Background Glioblastoma is the most lethal primary brain malignancy in adults. Standard of care treatment, consisting of temozolomide (TMZ) and adjuvant radiotherapy (RT), mostly does not prevent local recurrence. The inability of drugs to enter the brain, in particular antibody-based drugs and radiosensitizers, is a crucial limitation to effective glioblastoma therapy. Methods Here, we developed a combined strategy using radiosensitizer gold nanoparticles coated with insulin to cross the blood-brain barrier and shuttle tumor-targeting antibodies (cetuximab) into the brain. Results Following intravenous injection to an orthotopic glioblastoma mouse model, the nanoparticles specifically accumulated within the tumor. Combining targeted nanoparticle injection with TMZ and RT standard of care significantly inhibited tumor growth and extended survival, as compared to standard of care alone. Histological analysis of tumors showed that the combined treatment eradicated tumor cells, and decreased tumor vascularization, proliferation, and repair. Conclusions Our findings demonstrate radiosensitizer nanoparticles that effectively deliver antibodies into the brain, target the tumor, and effectively improve standard of care treatment outcome in glioblastoma.
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Affiliation(s)
- Omer Gal
- Davidoff Cancer Center, Rabin Medical Center, Beilinson Hospital, Petach Tikva 4941492, Israel
| | - Oshra Betzer
- Faculty of Engineering, Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Liat Rousso-Noori
- School of Neurobiology, Biochemistry and Biophysics, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Tamar Sadan
- Faculty of Engineering, Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Menachem Motiei
- Faculty of Engineering, Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Maxim Nikitin
- Moscow Institute of Physics and Technology, MIPT, Dolgoprudny, 141701 Moscow, Russia
- Department of Nanobiomedicine, Sirius University of Science and Technology, 354340 Sochi, Russia
| | - Dinorah Friedmann-Morvinski
- School of Neurobiology, Biochemistry and Biophysics, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Rachela Popovtzer
- Faculty of Engineering, Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Aron Popovtzer
- Sharett Institute of Oncology, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem 91120, Israel
- Correspondence: ; Tel.: +972-2-6777825
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5
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Beiderman M, Ashkenazy A, Segal E, Motiei M, Salomon A, Sadan T, Fixler D, Popovtzer R. Optimization of Gold Nanorod Features for the Enhanced Performance of Plasmonic Nanocavity Arrays. ACS Omega 2021; 6:29071-29077. [PMID: 34746596 PMCID: PMC8567385 DOI: 10.1021/acsomega.1c04301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 09/22/2021] [Indexed: 06/13/2023]
Abstract
Nanoplasmonic biosensors incorporating noble metal nanocavity arrays are widely used for the detection of various biomarkers. Gold nanorods (GNRs) have unique properties that can enhance spectroscopic detection capabilities of such nanocavity-based biosensors. However, the contribution of the physical properties of multiple GNRs to resonance enhancement of gold nanocavity arrays requires further characterization and elucidation. In this work, we study how GNR aspect ratio (AR) and surface area (SA) modify the plasmonic resonance spectrum of a gold triangular nanocavity array by both simulations and experiments. The finite integration technique (FIT) simulated the extinction spectrum of the gold nanocavity array with 300 nm periodicity onto which the GNRs of different ARs and SAs are placed. Simulations showed that matching of the GNRs longitudinal peak, which is affected by AR, to the nanocavity array's spectrum minima can optimize signal suppression and shifting. Moreover, increasing SA of the matched GNRs increased the spectral variations of the array. Experiments confirmed that GNRs conjugated to a gold triangular nanocavity array of 300 nm periodicity caused spectrum suppression and redshift. Our findings demonstrate that tailoring of the GNR AR and SA parameters to nanoplasmonic arrays has the potential to greatly improve spectral variations for enhanced plasmonic biosensing.
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Affiliation(s)
- Marianna Beiderman
- Faculty
of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 5290002, Israel
| | - Ariel Ashkenazy
- Faculty
of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 5290002, Israel
| | - Elad Segal
- Department
of Chemistry, Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 5290002, Israel
| | - Menachem Motiei
- Faculty
of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 5290002, Israel
| | - Adi Salomon
- Department
of Chemistry, Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 5290002, Israel
| | - Tamar Sadan
- Faculty
of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 5290002, Israel
| | - Dror Fixler
- Faculty
of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 5290002, Israel
| | - Rachela Popovtzer
- Faculty
of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 5290002, Israel
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6
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Shamalov K, Meir R, Motiei M, Popovtzer R, Cohen CJ. Noninvasive Tracking of Natural Killer Cells Using Gold Nanoparticles. ACS Omega 2021; 6:28507-28514. [PMID: 34746546 PMCID: PMC8567284 DOI: 10.1021/acsomega.1c02143] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 07/13/2021] [Indexed: 05/27/2023]
Abstract
Natural killer (NK)-cell-based immunotherapy is emerging as an attractive approach for cancer treatment. However, to facilitate and expedite clinical implementation, important questions must be answered regarding the in vivo functionality and trafficking patterns of the transferred cells. We have recently developed a noninvasive cell-tracking technique, based on gold nanoparticles (GNPs) as cell-labeling and contrast agents for whole-body computed tomography (CT) imaging. Herein, we report the implementation of this technique for longitudinal and quantitative tracking of NK cell kinetics, the migration and biodistribution in tumor-bearing mice. NK cells were successfully labeled with GNPs, without impairing their biological function, as assessed both in vitro, by cytokine release and cytotoxicity assays, and in vivo, using a xenograft model of human tumors. Using CT, we longitudinally tracked the migration of intravenously injected NK cells and observed an accumulation of effector cell clusters at the tumor site, up to 72 h. Fluorescence imaging of the cells over time correlated with ex vivo quantitative analysis of gold content in the tumor, validating the accuracy and reliability of our technique. Our cell-tracking approach thus offers a valuable tool for preclinical studies, as well as for clinical applications, to elucidate the fate of NK cells and promote the implementation of NK-cell-based immunotherapy.
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Affiliation(s)
- Katerina Shamalov
- Laboratory
of Tumor Immunology and Immunotherapy, Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 52900, Israel
| | - Rinat Meir
- Faculty
of Engineering & the Institute of Nanotechnology and Advanced
Materials, Bar-Ilan University, Ramat Gan 52900, Israel
| | - Menachem Motiei
- Faculty
of Engineering & the Institute of Nanotechnology and Advanced
Materials, Bar-Ilan University, Ramat Gan 52900, Israel
| | - Rachela Popovtzer
- Faculty
of Engineering & the Institute of Nanotechnology and Advanced
Materials, Bar-Ilan University, Ramat Gan 52900, Israel
| | - Cyrille J. Cohen
- Laboratory
of Tumor Immunology and Immunotherapy, Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 52900, Israel
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7
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Tzror-Azankot C, Betzer O, Sadan T, Motiei M, Rahimipour S, Atkins A, Popovtzer A, Popovtzer R. Glucose-Functionalized Liposomes for Reducing False Positives in Cancer Diagnosis. ACS Nano 2021; 15:1301-1309. [PMID: 33356143 DOI: 10.1021/acsnano.0c08530] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Fluorodeoxyglucose-positron emission tomography (18F-FDG-PET) is a powerful tool for cancer detection, staging, and follow-up. However, 18F-FDG-PET imaging has high rates of false positives, as it cannot distinguish between tumor and inflammation regions that both feature increased glucose metabolic activity. In the present study, we engineered liposomes coated with glucose and the chelator dodecane tetraacetic acid (DOTA) complexed with copper, to serve as a diagnostic technology for differentiating between cancer and inflammation. This liposome technology is based on FDA-approved materials and enables complexation with metal cations and radionuclides. We found that these liposomes were preferentially uptaken by cancer cell lines with high metabolic activity, mediated via glucose transporter-1. In vivo, these liposomes were avidly uptaken by tumors, as compared to liposomes without glucose coating. Moreover, in a combined tumor-inflammation mouse model, these liposomes accumulated in the tumor tissue and not in the inflammation region. Thus, this technology shows high specificity for tumors while evading inflammation and has potential for rapid translation to the clinic and integration with existing PET imaging systems, for effective reduction of false positives in cancer diagnosis.
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Affiliation(s)
- Chen Tzror-Azankot
- Faculty of Engineering and the Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Oshra Betzer
- Faculty of Engineering and the Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Tamar Sadan
- Faculty of Engineering and the Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Menachem Motiei
- Faculty of Engineering and the Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Shai Rahimipour
- Department of Chemistry, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Ayelet Atkins
- Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan, 5290002, Israel
| | - Aron Popovtzer
- Sharett Institute of Oncology, Hadassah Hebrew Medical Center, Jerusalem 9112001, Israel
| | - Rachela Popovtzer
- Faculty of Engineering and the Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
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8
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Cohen O, Betzer O, Elmaliach-Pnini N, Motiei M, Sadan T, Cohen-Berkman M, Dagan O, Popovtzer A, Yosepovich A, Barhom H, Michaeli S, Popovtzer R. 'Golden' exosomes as delivery vehicles to target tumors and overcome intratumoral barriers: in vivo tracking in a model for head and neck cancer. Biomater Sci 2021; 9:2103-2114. [PMID: 33475633 DOI: 10.1039/d0bm01735c] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Exosomes are promising vectors for anti-tumor therapy, due to their biocompatibility, low immunogenicity, and innate ability to interact with target cells. However, promoting clinical application of exosome-based therapeutics requires elucidation of key issues, including exosome biodistribution, tumor targeting and accumulation, and the ability to overcome tumor barriers that limit the penetration of various nano-carriers and drugs. Here, we examined these parameters in exosomes derived from mesenchymal stem cells (MSC-exo) and from the A431 squamous cell carcinoma line (A431-exo), which both have potential use in cancer therapy. Using our novel technique combining gold nanoparticle (GNP) labeling of exosomes and non-invasive computed tomography imaging (CT), we longitudinally and quantitatively tracked the two intravenously-injected exosome types in A431 tumor-bearing mice. CT imaging up to 48 h and subsequent ex vivo analysis revealed tumor homing abilities of both exosome types, yet there was significantly higher tumor accumulation of MSC-exo as compared to A431-exo. Moreover, MSC-exo demonstrated the ability to penetrate the tumor and distribute throughout its bulk, while non-encapsulated GNPs remained concentrated at the tumor periphery. Histological analysis showed penetration of MSC-exo not only into the tumor tissue, but also into tumor cell cytoplasm. While the proportion of biodistribution between organs at 48 h was similar for both exosome types, more rapid clearance was indicated for A431-exo. Thus, our findings demonstrate an effect of exosome type on tumor targeting abilities and biodistribution, and suggest that MSC-exo may have superior abilities for tumor-targeted therapy.
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Affiliation(s)
- Oded Cohen
- Department of Otolaryngology, Head and Neck Surgery, Kaplan Medical Center, Rehovot, Israel, affiliated to the Hebrew University, Jerusalem, Israel
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9
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Haimov-Talmoud E, Harel Y, Schori H, Motiei M, Atkins A, Popovtzer R, Lellouche JP, Shefi O. Magnetic Targeting of mTHPC To Improve the Selectivity and Efficiency of Photodynamic Therapy. ACS Appl Mater Interfaces 2019; 11:45368-45380. [PMID: 31755692 DOI: 10.1021/acsami.9b14060] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Photodynamic therapy (PDT) is a promising recognized treatment for cancer. To date, PDT drugs are injected systemically, and the tumor area is irradiated to induce cell death. Current clinical protocols have several drawbacks, including limited accessibility to solid tumors and insufficient selectivity of drugs. Herein, we propose an alternative approach to improve PDT effectiveness by magnetic targeting of responsive carriers conjugated to the PDT drug. We coordinatively attached a meso-tetrahydroxyphenylchlorin (mTHPC) photosensitizer to Ce-doped-γ-Fe2O3 maghemite nanoparticles (MNPs). These MNPs are superparamagnetic and biocompatible, and the resulting mTHPC-MNPs nanocomposites are stable in aqueous suspensions. MDA-MB231 (human breast cancer) cells incubated with the mTHPC-MNPs showed high uptake and high death rates in cell population after PDT. The exposure to external magnetic forces during the incubation period directed the nanocomposites to selected sites enhancing drug accumulation that was double that of cells with no magnetic exposure. Next, breast cancer tumors were induced subcutaneously in mice and treated magnetically. In vivo results showed accelerated drug accumulation in tumors of mice injected with mTHPC-MNP nanocomposites, compared to the free drug. PDT irradiation led to a decrease in tumor size of both groups, whereas treatment with the focused magnetic nanocomposites led to significant tumor regression. Our results demonstrate a method to improve the current PDT treatments by applying magnetic forces to effectively direct the drug to cancerous tissue. This approach leads to a highly localized and effective PDT process, opening new directions for clinical PDT protocols.
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Affiliation(s)
- Elina Haimov-Talmoud
- Bar-Ilan Institute of Nanotechnology and Advanced Materials (BINA) , Ramat Gan 5290002 , Israel
| | - Yifat Harel
- Bar-Ilan Institute of Nanotechnology and Advanced Materials (BINA) , Ramat Gan 5290002 , Israel
| | - Hadas Schori
- Bar-Ilan Institute of Nanotechnology and Advanced Materials (BINA) , Ramat Gan 5290002 , Israel
| | - Menachem Motiei
- Bar-Ilan Institute of Nanotechnology and Advanced Materials (BINA) , Ramat Gan 5290002 , Israel
| | - Ayelet Atkins
- Bar-Ilan Institute of Nanotechnology and Advanced Materials (BINA) , Ramat Gan 5290002 , Israel
| | - Rachela Popovtzer
- Bar-Ilan Institute of Nanotechnology and Advanced Materials (BINA) , Ramat Gan 5290002 , Israel
| | - Jean-Paul Lellouche
- Bar-Ilan Institute of Nanotechnology and Advanced Materials (BINA) , Ramat Gan 5290002 , Israel
| | - Orit Shefi
- Bar-Ilan Institute of Nanotechnology and Advanced Materials (BINA) , Ramat Gan 5290002 , Israel
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10
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Zilony-Hanin N, Rosenberg M, Richman M, Yehuda R, Schori H, Motiei M, Rahimipour S, Groisman A, Segal E, Shefi O. Neuroprotective Effect of Nerve Growth Factor Loaded in Porous Silicon Nanostructures in an Alzheimer's Disease Model and Potential Delivery to the Brain. Small 2019; 15:e1904203. [PMID: 31482695 DOI: 10.1002/smll.201904203] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Indexed: 06/10/2023]
Abstract
Nerve growth factor (NGF) plays a vital role in reducing the loss of cholinergic neurons in Alzheimer's disease (AD). However, its delivery to the brain remains a challenge. Herein, NGF is loaded into degradable oxidized porous silicon (PSiO2 ) carriers, which are designed to carry and continuously release the protein over a 1 month period. The released NGF exhibits a substantial neuroprotective effect in differentiated rat pheochromocytoma PC12 cells against amyloid-beta (Aβ)-induced cytotoxicity, which is associated with Alzheimer's disease. Next, two potential localized administration routes of the porous carriers into murine brain are investigated: implantation of PSiO2 chips above the dura mater, and biolistic bombardment of PSiO2 microparticles through an opening in the skull using a pneumatic gene gun. The PSiO2 -implanted mice are monitored for a period of 8 weeks and no inflammation or adverse effects are observed. Subsequently, a successful biolistic delivery of these highly porous microparticles into a live-mouse brain is demonstrated for the first time. The bombarded microparticles are observed to penetrate the brain and reach a depth of 150 µm. These results pave the way for using degradable PSiO2 carriers as potential localized delivery systems for NGF to the brain.
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Affiliation(s)
- Neta Zilony-Hanin
- Faculty of Engineering, Bar-Ilan University, Ramat-Gan, 5290002, Israel
- Bar-Ilan Institute of Nanotechnologies and Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Michal Rosenberg
- Department of Biotechnology and Food Engineering, Technion - Israel Institute of Technology, Haifa, 3200003, Israel
| | - Michal Richman
- Department of Chemistry, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Ronen Yehuda
- Department of Life Sciences, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Hadas Schori
- Faculty of Engineering, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Menachem Motiei
- Faculty of Engineering, Bar-Ilan University, Ramat-Gan, 5290002, Israel
- Bar-Ilan Institute of Nanotechnologies and Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Shai Rahimipour
- Department of Chemistry, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Alexander Groisman
- Department of Physics, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Ester Segal
- Department of Biotechnology and Food Engineering, Technion - Israel Institute of Technology, Haifa, 3200003, Israel
- Russell Berrie Nanotechnology Institute, Technion - Israel Institute of Technology, Haifa, 3200003, Israel
| | - Orit Shefi
- Faculty of Engineering, Bar-Ilan University, Ramat-Gan, 5290002, Israel
- Bar-Ilan Institute of Nanotechnologies and Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel
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11
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Chemla Y, Betzer O, Markus A, Farah N, Motiei M, Popovtzer R, Mandel Y. Gold nanoparticles for multimodal high-resolution imaging of transplanted cells for retinal replacement therapy. Nanomedicine (Lond) 2019; 14:1857-1871. [DOI: 10.2217/nnm-2018-0299] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Aim: Longitudinal tracking of transplanted cells in clinical and experimental setups is crucial for evaluating the efficiency of retinal cell replacement therapies. Materials & methods: Gold nanoparticle-labeled photoreceptor precursors were transplanted in the vitreous and subretinal space of rats and were longitudinally tracked for over a month using optical coherence tomography, computed tomography and fluorescence fundus imaging. Results: This multimodal imaging approach enabled high-resolution long-term tracking and estimation of cell survival in the retina and vitreous, while displaying no toxic effects on the cells or the retina. Conclusion: These observations highlight the applicability of using gold nanoparticle for retinal cell tracking in existing experimental settings and its translational potential for providing more efficient retinal cell therapy in humans.
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Affiliation(s)
- Yoav Chemla
- Faculty of Life Sciences, School of Optometry & Vision Science, Bar-Ilan University, Ramat Gan 5290002, Israel
- Bar-Ilan Institute for Nanotechnology & Advanced Materials (BINA), Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Oshra Betzer
- Bar-Ilan Institute for Nanotechnology & Advanced Materials (BINA), Bar-Ilan University, Ramat Gan 5290002, Israel
- Faculty of Engineering, Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Amos Markus
- Faculty of Life Sciences, School of Optometry & Vision Science, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Nairouz Farah
- Faculty of Life Sciences, School of Optometry & Vision Science, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Menachem Motiei
- Bar-Ilan Institute for Nanotechnology & Advanced Materials (BINA), Bar-Ilan University, Ramat Gan 5290002, Israel
- Faculty of Engineering, Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Rachela Popovtzer
- Bar-Ilan Institute for Nanotechnology & Advanced Materials (BINA), Bar-Ilan University, Ramat Gan 5290002, Israel
- Faculty of Engineering, Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Yossi Mandel
- Faculty of Life Sciences, School of Optometry & Vision Science, Bar-Ilan University, Ramat Gan 5290002, Israel
- Bar-Ilan Institute for Nanotechnology & Advanced Materials (BINA), Bar-Ilan University, Ramat Gan 5290002, Israel
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12
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Motiei M, Dreifuss T, Sadan T, Omer N, Blumenfeld-Katzir T, Fragogeorgi E, Loudos G, Popovtzer R, Ben-Eliezer N. Trimodal Nanoparticle Contrast Agent for CT, MRI and SPECT Imaging: Synthesis and Characterization of Radiolabeled Core/Shell Iron Oxide@Gold Nanoparticles. CHEM LETT 2019. [DOI: 10.1246/cl.180780] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Menachem Motiei
- Faculty of Engineering and the Institutes of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel
| | - Tamar Dreifuss
- Faculty of Engineering and the Institutes of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel
| | - Tamar Sadan
- Faculty of Engineering and the Institutes of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel
| | - Noam Omer
- Department of Biomedical Engineering, Tel Aviv University, Tel Aviv, Israel
| | | | - Eirini Fragogeorgi
- Institute of Nuclear & Radiological Sciences, Technology, Energy & Safety, NCSR “Demokritos”, Ag. Paraskevi 15310, Athens, Greece
| | - George Loudos
- Institute of Nuclear & Radiological Sciences, Technology, Energy & Safety, NCSR “Demokritos”, Ag. Paraskevi 15310, Athens, Greece
- Bioemission Technology Solutions, Alexandras Avenue 116, 11472, Athens, Greece/Lefkippos Attica Technology Park NCSR “Demokritos”, Ag. Paraskevi 15310, Athens, Greece
| | - Rachela Popovtzer
- Faculty of Engineering and the Institutes of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel
| | - Noam Ben-Eliezer
- Department of Biomedical Engineering, Tel Aviv University, Tel Aviv, Israel
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
- Center for Advanced Imaging Innovation and Research (CAI2R), New-York University Langone Medical Center, New York, NY, USA
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13
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Chakraborty R, Ankri R, Leshem-Lev D, Hochhauser E, Kornowski R, Motiei M, Lev EI, Fixler D. Hyperlipidemic mice as a model for a real-time in vivo detection of atherosclerosis by gold nanorods-based diffusion reflection technique. J Biophotonics 2019; 12:e201800218. [PMID: 30141260 DOI: 10.1002/jbio.201800218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 07/20/2018] [Accepted: 08/22/2018] [Indexed: 05/11/2023]
Abstract
Atherosclerosis (AS), the leading cause of morbidity and mortality in cardiovascular disease, needs an early detection for treatment and prevention of fatal events. Here, for the first time, we applied gold nanorods (GNRs)-assisted diffusion reflection (DR), a noninvasive technique for in vivo detection of AS in a high-fat-diet-induced c57bl mouse model, which resembles the manifestation of AS in humans. DR simply detects the change in light reflection profile of tissue due to the accumulation of GNRs in the AS plaques and enables clear detection of AS lesions in carotid and femoral arteries of these hyperlipidemic mice. After 24 hours post-GNRs injection, DR showed the highest efficiency of AS detection. Moreover, the sensitivity of the DR method is much higher than computed tomography (CT) and is comparable to ex vivo high-resolution CT. Our results strongly suggest that the DR method can detect early atherosclerotic lesions in a sensitive and specific manner.
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Affiliation(s)
- Ruchira Chakraborty
- Faculty of Engineering and Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, Israel
| | - Rinat Ankri
- Faculty of Engineering and Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, Israel
| | - Dorit Leshem-Lev
- Cardiac Research Laboratories at the Felsenstein Medical Research Center and the Cardiology Department, Rabin Medical Center, Petah Tikva, Israel
| | - Edith Hochhauser
- Cardiac Research Laboratories at the Felsenstein Medical Research Center and the Cardiology Department, Rabin Medical Center, Petah Tikva, Israel
| | - Ran Kornowski
- Cardiac Research Laboratories at the Felsenstein Medical Research Center and the Cardiology Department, Rabin Medical Center, Petah Tikva, Israel
| | - Menachem Motiei
- Faculty of Engineering and Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, Israel
| | - Eli I Lev
- Cardiac Research Laboratories at the Felsenstein Medical Research Center and the Cardiology Department, Rabin Medical Center, Petah Tikva, Israel
| | - Dror Fixler
- Faculty of Engineering and Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, Israel
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14
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Betzer O, Perets N, Angel A, Motiei M, Sadan T, Offen D, Popovtzer R. Reply to "Comment on ' In Vivo Neuroimaging of Exosomes Using Gold Nanoparticles'". ACS Nano 2018; 12:11719-11720. [PMID: 30995714 DOI: 10.1021/acsnano.8b07946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- Oshra Betzer
- Faculty of Engineering and the Institute of Nanotechnology & Advanced Materials Bar-Ilan University , Ramat Gan 5290002 , Israel
- The Leslie and Susan Gonda Multidisciplinary Brain Research Center , Bar-Ilan University , Ramat Gan 5290002 , Israel
| | - Nisim Perets
- Felsenstein Medical Research Center, Sackler Faculty of Medicine , Tel Aviv University , Tel Aviv 69978 , Israel
| | - Ariel Angel
- Felsenstein Medical Research Center, Sackler Faculty of Medicine , Tel Aviv University , Tel Aviv 69978 , Israel
| | - Menachem Motiei
- Faculty of Engineering and the Institute of Nanotechnology & Advanced Materials Bar-Ilan University , Ramat Gan 5290002 , Israel
| | - Tamar Sadan
- Faculty of Engineering and the Institute of Nanotechnology & Advanced Materials Bar-Ilan University , Ramat Gan 5290002 , Israel
| | - Daniel Offen
- Felsenstein Medical Research Center, Sackler Faculty of Medicine , Tel Aviv University , Tel Aviv 69978 , Israel
| | - Rachela Popovtzer
- Faculty of Engineering and the Institute of Nanotechnology & Advanced Materials Bar-Ilan University , Ramat Gan 5290002 , Israel
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15
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Dreifuss T, Ben-Gal TS, Shamalov K, Weiss A, Jacob A, Sadan T, Motiei M, Popovtzer R. Uptake mechanism of metabolic-targeted gold nanoparticles. Nanomedicine (Lond) 2018; 13:1535-1549. [PMID: 30028251 DOI: 10.2217/nnm-2018-0022] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
AIM To elucidate the interactions, uptake mechanisms and cytotoxicity profile of glucose-functionalized gold nanoparticles (2GF-GNPs), for expanding and advancing the recently proposed technology of metabolic-based cancer detection to a variety of cancer diseases. METHODS Several cell types with different metabolic features were used to assess the involvement of GLUT-1 and different endocytosis pathways in 2GF-GNP uptake, and the cytotoxicity profile of 2GF-GNPs. RESULTS Cellular uptake of 2GF-GNP strongly correlated with GLUT-1 surface expression, and occurred mainly through clathrin-mediated endocytosis. 2GF-GNPs showed no toxic effect on cell cycle and proliferation. CONCLUSION These findings promote development of metabolic-based cancer detection technologies, and suggest that 2GF-GNPs may enable specific cancer detection in a wide range of tumors characterized by high GLUT-1 expression.
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Affiliation(s)
- Tamar Dreifuss
- Faculty of Engineering & the Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel
| | - Tal-Shachar Ben-Gal
- Faculty of Engineering & the Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel
| | - Katerina Shamalov
- The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | - Aryeh Weiss
- Faculty of Engineering & the Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel
| | - Avi Jacob
- The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | - Tamar Sadan
- Faculty of Engineering & the Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel
| | - Menachem Motiei
- Faculty of Engineering & the Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel
| | - Rachela Popovtzer
- Faculty of Engineering & the Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel
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16
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Marcus M, Smith A, Maswadeh A, Shemesh Z, Zak I, Motiei M, Schori H, Margel S, Sharoni A, Shefi O. Magnetic Targeting of Growth Factors Using Iron Oxide Nanoparticles. Nanomaterials (Basel) 2018; 8:nano8090707. [PMID: 30201889 PMCID: PMC6163445 DOI: 10.3390/nano8090707] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 09/04/2018] [Accepted: 09/07/2018] [Indexed: 12/29/2022]
Abstract
Growth factors play an important role in nerve regeneration and repair. An attractive drug delivery strategy, termed “magnetic targeting”, aims to enhance therapeutic efficiency by directing magnetic drug carriers specifically to selected cell populations that are suitable for the nervous tissues. Here, we covalently conjugated nerve growth factor to iron oxide nanoparticles (NGF-MNPs) and used controlled magnetic fields to deliver the NGF–MNP complexes to target sites. In order to actuate the magnetic fields a modular magnetic device was designed and fabricated. PC12 cells that were plated homogenously in culture were differentiated selectively only in targeted sites out of the entire dish, restricted to areas above the magnetic “hot spots”. To examine the ability to guide the NGF-MNPs towards specific targets in vivo, we examined two model systems. First, we injected and directed magnetic carriers within the sciatic nerve. Second, we injected the MNPs intravenously and showed a significant accumulation of MNPs in mouse retina while using an external magnet that was placed next to one of the eyes. We propose a novel approach to deliver drugs selectively to injured sites, thus, to promote an effective repair with minimal systemic side effects, overcoming current challenges in regenerative therapeutics.
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Affiliation(s)
- Michal Marcus
- Faculty of Engineering, Bar Ilan University, Ramat Gan 5290002, Israel.
- Bar Ilan Institute of Nanotechnologies and Advanced Materials, Ramat Gan 5290002, Israel.
| | - Alexandra Smith
- Bar Ilan Institute of Nanotechnologies and Advanced Materials, Ramat Gan 5290002, Israel.
- Department of Chemistry, Bar Ilan University, Ramat Gan 5290002, Israel.
| | - Ahmad Maswadeh
- Faculty of Engineering, Bar Ilan University, Ramat Gan 5290002, Israel.
- Department of Neurosurgery, Sheba Medical Center, Ramat Gan 5290002, Israel.
| | - Ziv Shemesh
- Faculty of Engineering, Bar Ilan University, Ramat Gan 5290002, Israel.
| | - Idan Zak
- Faculty of Engineering, Bar Ilan University, Ramat Gan 5290002, Israel.
| | - Menachem Motiei
- Faculty of Engineering, Bar Ilan University, Ramat Gan 5290002, Israel.
- Bar Ilan Institute of Nanotechnologies and Advanced Materials, Ramat Gan 5290002, Israel.
| | - Hadas Schori
- Faculty of Engineering, Bar Ilan University, Ramat Gan 5290002, Israel.
- Bar Ilan Institute of Nanotechnologies and Advanced Materials, Ramat Gan 5290002, Israel.
| | - Shlomo Margel
- Bar Ilan Institute of Nanotechnologies and Advanced Materials, Ramat Gan 5290002, Israel.
- Department of Chemistry, Bar Ilan University, Ramat Gan 5290002, Israel.
| | - Amos Sharoni
- Bar Ilan Institute of Nanotechnologies and Advanced Materials, Ramat Gan 5290002, Israel.
- Department of Physics, Bar Ilan University, Ramat Gan 5290002, Israel.
| | - Orit Shefi
- Faculty of Engineering, Bar Ilan University, Ramat Gan 5290002, Israel.
- Bar Ilan Institute of Nanotechnologies and Advanced Materials, Ramat Gan 5290002, Israel.
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17
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Motiei M, Sadan T, Zilony N, Topaz G, Popovtzer R, Topaz M. Gold nanoparticles for tracking bacteria clearance by regulated irrigation and negative pressure-assisted wound therapy. Nanomedicine (Lond) 2018; 13:1835-1945. [PMID: 30152260 DOI: 10.2217/nnm-2018-0053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
AIM Regulated negative pressure-assisted wound therapy is a fundamental, nonpharmaceutical technology for acute and chronically infected wounds, yet bacterial clearance and biofilm buildup remain a challenge for healing. Regulated irrigation combined with negative pressure (RI-NPT) is emerging as an alternative therapeutic strategy for reducing bacterial load. Here, we analyzed RI-NPT hydrokinetics and efficacy of bacterial load reduction in wounds. MATERIALS & METHODS Escherichia coli were loaded with gold nanoparticles, quantified by flame atomic absorption spectroscopy. Computed tomography (CT) imaging tracked bacterial distribution over time in a low-flow rat wound model. Bacterial load was quantified using a novel CT ruler. RESULT Flame atomic absorption spectroscopy showed loading of 1.7 × 103 ± 0.2 gold nanoparticles/cell. CT tracking revealed that while regulated negative pressure-assisted wound therapy reduced bacterial load to a limited extent (5%), RI-NPT significantly increased bacterial outflow and clearance (by 45%). CONCLUSION This nanotechnology-based approach demonstrates that RI-NPT is essential for reducing bacterial load and, thus, for promoting wound healing.
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Affiliation(s)
- Menachem Motiei
- Faculty of Engineering & the Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel
| | - Tamar Sadan
- Faculty of Engineering & the Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel
| | - Neta Zilony
- Faculty of Engineering & the Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel
| | - Guy Topaz
- Department of Internal Medicine, Meir Medical Center, Kfar Saba, Israel.,Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Rachela Popovtzer
- Faculty of Engineering & the Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel
| | - Moris Topaz
- Plastic Surgery Unit, Hillel Yaffe Medical Center, Hadera, Israel
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18
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Ankri R, Chakraborty R, Motiei M, Fixler D. Three-Dimensional Highly Sensitive Diffusion Reflection-Based Imaging Method for the in Vivo Localization of Atherosclerosis Plaques Following Gold Nanorods Accumulation. ACS Omega 2018; 3:6134-6142. [PMID: 30023941 PMCID: PMC6045478 DOI: 10.1021/acsomega.8b00750] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 05/23/2018] [Indexed: 05/11/2023]
Abstract
In this work, we present a novel, simple, and highly accurate three-dimensional (3D) diffusion reflection (DR) imaging system and method for the detection of accumulation sites of gold nanorods (GNRs) within the tissue. GNRs are intensively used for diagnosis purposes of varied diseases, mainly because of their ability to well absorb visible light, which introduces them as terrific contrast agents in various imaging and theranostics methods. Lately, these GNRs unique absorption properties have served in DR intensity-based measurements, suggesting a novel diagnostic tool, DR-GNRs. In this paper, we show a new measurement system and method for DR, based on its radial collection from the tissue. These radial measurements enabled a unique 3D presentation of the DR-GNR, introducing the dimensions ρ for the radius, θ for the angle, and Γ for the reflected intensity. On the basis of the diffusion model, which enables to correlate between the sample's optical properties and its reflectance, a unique, radial map is presented. This map introduces the slopes of the DR curves in each measured angle, which are linearly correlated with the tissue's optical properties and with the GNRs concentrations within the tissue, thus enables the exact radial localization of the GNRs in the sample. We show the detection of macrophage accumulation in tissue-like phantoms, as well as the localization of unstable plaques in hyperlipidemic mice, in vivo. This highly accurate, powerful technology paves the way toward a real-time detection method that can be successfully integrated in the rapid increasing field of personalized medicine.
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Affiliation(s)
| | | | | | - Dror Fixler
- E-mail: . Phone: +972-3-5317598. Fax: +972-3-7384050 (D.F.)
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19
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Haddad M, Popovtzer R, Yariv I, Motiei M, Fixler D. [CONCISE NANOMEDICINE REVIEW]. Harefuah 2018; 157:232-236. [PMID: 29688641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nanomedicine is a rapidly evolving medical domain utilizing 1-100nm nanoscale particles to achieve medical goals in either one or more medical aspects - diagnosis, imaging and therapy. Nanomedicine employs a combination of methods stemming from life and exact sciences. This review deals briefly with the principles behind the scenes guiding the design, manufacture and employment of these nanoparticles. Some representative examples of the various applications are provided from the abundance of existing nanoparticles. The main topics discussed are those related to composition, characteristics of nanoparticles, usage in cancer, drug delivery and various central nervous system applications. Possible toxicity and future teratogenicity research pertaining to nanoparticles are also elaborated upon.
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Affiliation(s)
- Menashe Haddad
- Sackler Faculty of Medicine, Tel-Aviv University
- Mayanei Hayeshua Medical Center
| | - Rachela Popovtzer
- Faculty of Engineering and Institute of Nanotechnology and Advanced Materials, Bar-Ilan University
| | - Inbar Yariv
- Faculty of Engineering and Institute of Nanotechnology and Advanced Materials, Bar-Ilan University
| | - Menachem Motiei
- Faculty of Engineering and Institute of Nanotechnology and Advanced Materials, Bar-Ilan University
| | - Dror Fixler
- Faculty of Engineering and Institute of Nanotechnology and Advanced Materials, Bar-Ilan University
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20
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Abstract
Exosomes are emerging as effective therapeutic tools for various pathologies. These extracellular vesicles can bypass biological barriers, including the blood-brain barrier, and can serve as powerful drug and gene therapy transporters. However, the progress of therapy development is impeded by several challenges, including insufficient data on exosome trafficking and biodistribution and the difficulty to image deep brain structures in vivo. Herein, we established a method for noninvasive in vivo neuroimaging and tracking of exosomes, based on glucose-coated gold nanoparticle (GNP) labeling and computed tomography imaging. Labeling of exosomes with the GNPs was achieved directly, as opposed to the typical and less efficient indirect labeling mode through parent cells. On the mechanistic level, we found that the glucose-coated GNPs were uptaken into MSC-derived exosomes via an active, energy-dependent mechanism that is mediated by the glucose transporter GLUT-1 and involves endocytic proteins. Next, we determined optimal parameters of size and administration route; we demonstrated that 5 nm GNPs enabled improved exosome labeling and that intranasal, compared to intravenous, administration led to superior brain accumulation and thus enhanced in vivo neuroimaging. Furthermore, using a mouse model of focal brain ischemia, we noninvasively tracked intranasally administered GNP-labeled exosomes, which showed increased accumulation at the lesion site over 24 h, as compared to nonspecific migration and clearance from control brains over the same period. Thus, this exosome labeling technique can serve as a powerful diagnostic tool for various brain disorders and could potentially enhance exosome-based treatments for neuronal recovery.
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Affiliation(s)
| | - Nisim Perets
- Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel Aviv University , Tel Aviv 69978, Israel
| | - Ariel Angel
- Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel Aviv University , Tel Aviv 69978, Israel
| | | | | | | | - Daniel Offen
- Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel Aviv University , Tel Aviv 69978, Israel
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21
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Meir R, Shamalov K, Sadan T, Motiei M, Yaari G, Cohen CJ, Popovtzer R. Fast Image-Guided Stratification Using Anti-Programmed Death Ligand 1 Gold Nanoparticles for Cancer Immunotherapy. ACS Nano 2017; 11:11127-11134. [PMID: 29028305 DOI: 10.1021/acsnano.7b05299] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Cancer immunotherapy has made enormous progress in offering safer and more effective treatments for the disease. Specifically, programmed death ligand 1 antibody (αPDL1), designed to perform immune checkpoint blockade (ICB), is now considered a pillar in cancer immunotherapy. However, due to the complexity and heterogeneity of tumors, as well as the diversity in patient response, ICB therapy only has a 30% success rate, at most; moreover, the efficacy of ICB can be evaluated only two months after start of treatment. Therefore, early identification of potential responders and nonresponders to therapy, using noninvasive means, is crucial for improving treatment decisions. Here, we report a straightforward approach for fast, image-guided prediction of therapeutic response to ICB. In a colon cancer mouse model, we demonstrate that the combination of computed tomography imaging and gold nanoparticles conjugated to αPDL1 allowed prediction of therapeutic response, as early as 48 h after treatment. This was achieved by noninvasive measurement of nanoparticle accumulation levels within the tumors. Moreover, we show that the nanoparticles efficiently prevented tumor growth with only a fifth of the standard dosage of clinical care. This technology may be developed into a powerful tool for early and noninvasive patient stratification as responders or nonresponders.
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Affiliation(s)
- Rinat Meir
- Faculty of Engineering, ‡The Institute of Nanotechnology and Advanced Materials, and §Laboratory of Tumor Immunology and Immunotherapy, Goodman Faculty of Life Sciences, Bar-Ilan University , Ramat Gan 52900, Israel
| | - Katerina Shamalov
- Faculty of Engineering, ‡The Institute of Nanotechnology and Advanced Materials, and §Laboratory of Tumor Immunology and Immunotherapy, Goodman Faculty of Life Sciences, Bar-Ilan University , Ramat Gan 52900, Israel
| | - Tamar Sadan
- Faculty of Engineering, ‡The Institute of Nanotechnology and Advanced Materials, and §Laboratory of Tumor Immunology and Immunotherapy, Goodman Faculty of Life Sciences, Bar-Ilan University , Ramat Gan 52900, Israel
| | - Menachem Motiei
- Faculty of Engineering, ‡The Institute of Nanotechnology and Advanced Materials, and §Laboratory of Tumor Immunology and Immunotherapy, Goodman Faculty of Life Sciences, Bar-Ilan University , Ramat Gan 52900, Israel
| | - Gur Yaari
- Faculty of Engineering, ‡The Institute of Nanotechnology and Advanced Materials, and §Laboratory of Tumor Immunology and Immunotherapy, Goodman Faculty of Life Sciences, Bar-Ilan University , Ramat Gan 52900, Israel
| | - Cyrille J Cohen
- Faculty of Engineering, ‡The Institute of Nanotechnology and Advanced Materials, and §Laboratory of Tumor Immunology and Immunotherapy, Goodman Faculty of Life Sciences, Bar-Ilan University , Ramat Gan 52900, Israel
| | - Rachela Popovtzer
- Faculty of Engineering, ‡The Institute of Nanotechnology and Advanced Materials, and §Laboratory of Tumor Immunology and Immunotherapy, Goodman Faculty of Life Sciences, Bar-Ilan University , Ramat Gan 52900, Israel
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22
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Davidi ES, Dreifuss T, Motiei M, Shai E, Bragilovski D, Lubimov L, Kindler MJJ, Popovtzer A, Don J, Popovtzer R. Cisplatin-conjugated gold nanoparticles as a theranostic agent for head and neck cancer. Head Neck 2017; 40:70-78. [PMID: 29130566 DOI: 10.1002/hed.24935] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 06/21/2017] [Accepted: 07/27/2017] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND The purpose of this study was to develop a nanoplatform, which simultaneously acts as radiosensitizer, drug carrier, and tumor imaging agent for head and neck cancer. METHODS We synthesized 20 nm gold nanoparticles, coated with glucose and cisplatin (CG-GNPs). Their penetration into tumor cells and their cellular toxicity were evaluated in vitro. In vivo experiments were conducted to evaluate their impact on tumor growth and their imaging capabilities. RESULTS The CG-GNPs showed efficient penetration into tumor cells and similar cellular toxicity as cisplatin alone. Combined with radiation, CG-GNPs led to greater tumor reduction than that of radiation alone and radiation with free cisplatin. The CG-GNPs also demonstrated efficient tumor imaging capabilities. CONCLUSION Our CG-GNPs have a great potential to increase antitumor effect, overcome resistance to chemotherapeutics and radiation, and allow imaging-guided therapy.
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Affiliation(s)
- Erez Shmuel Davidi
- Department of Otolaryngology Head and Neck Surgery, Kaplan Medical Center, Rehovot, Israel
| | - Tamar Dreifuss
- Faculty of Engineering and the Institutes of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel
| | - Menachem Motiei
- Faculty of Engineering and the Institutes of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel
| | - Eliezer Shai
- The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | - Dimitri Bragilovski
- Head and Neck Cancer Radiation Clinic, Institute of Oncology, Davidoff Cancer Center, Rabin Medical Center, Petah Tiqwa, Israel
| | - Leon Lubimov
- Head and Neck Cancer Radiation Clinic, Institute of Oncology, Davidoff Cancer Center, Rabin Medical Center, Petah Tiqwa, Israel
| | - Marc Jose Jonathan Kindler
- Head and Neck Cancer Radiation Clinic, Institute of Oncology, Davidoff Cancer Center, Rabin Medical Center, Petah Tiqwa, Israel
| | - Aron Popovtzer
- Head and Neck Cancer Radiation Clinic, Institute of Oncology, Davidoff Cancer Center, Rabin Medical Center, Petah Tiqwa, Israel.,Sackler Faculty of Medicine, Tel-Aviv University, Ramat Aviv, Israel
| | - Jeremy Don
- The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | - Rachela Popovtzer
- Faculty of Engineering and the Institutes of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel
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23
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Hazkani I, Motiei M, Betzer O, Sadan T, Bragilovski D, Lubimov L, Mizrachi A, Hadar T, Levi M, Ben-Aharon I, Haviv I, Popovtzer R, Popovtzer A. Can molecular profiling enhance radiotherapy? Impact of personalized targeted gold nanoparticles on radiosensitivity and imaging of adenoid cystic carcinoma. Theranostics 2017; 7:3962-3971. [PMID: 29109791 PMCID: PMC5667418 DOI: 10.7150/thno.19615] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 07/03/2017] [Indexed: 01/18/2023] Open
Abstract
Personalized molecular profiling has an established role in selection of treatment for metastatic disease; however, its role in improving radiosensitivity and functional imaging has not been evaluated. In the current study, we examined molecular profiling as a tool for designing personalized targeted gold nanoparticles (GNP) to serve as dual-modal tumor radiosensitizers and functional imaging enhancers. To this end, molecular profiling of a patient's salivary gland adenoid cystic carcinoma (ACC) was performed, and anaplastic lymphoma kinase (ALK) mutation was detected. The extracted tumor was subcutaneously injected into mice, which were then treated either with radiation, the specific ALK inhibitor crizotinib, or a combination of therapies. One of these combinations, namely, ALK-targeted GNP (via crizotinib coating), was found to enhance radiation treatment, as demonstrated by a significant decrease in tumor volume over 24 days. In parallel, ALK-targeted GNP substantially augmented tumor visualization via computed tomography. The mechanism of radiosensitivity enhancement was mostly related to a diminished cell repair mechanism in tumors, as demonstrated by proliferating cell nuclear antigen staining. These findings indicate that personalized molecular profiling is an effective technique for enhancing cancer theranostics.
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Affiliation(s)
- Inbal Hazkani
- Sackler Faculty of Medicine, Tel-Aviv University, Ramat Aviv, Israel
- Head and Neck Cancer Radiation Clinic, Institute of Oncology, Davidoff Cancer Center, Rabin Medical Center, Petach Tikva, Israel
| | - Menachem Motiei
- Faculty of Engineering & The Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, Israel
| | - Oshra Betzer
- Faculty of Engineering & The Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, Israel
| | - Tamar Sadan
- Faculty of Engineering & The Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, Israel
| | - Dimitri Bragilovski
- Head and Neck Cancer Radiation Clinic, Institute of Oncology, Davidoff Cancer Center, Rabin Medical Center, Petach Tikva, Israel
| | - Leon Lubimov
- Head and Neck Cancer Radiation Clinic, Institute of Oncology, Davidoff Cancer Center, Rabin Medical Center, Petach Tikva, Israel
| | - Aviram Mizrachi
- Sackler Faculty of Medicine, Tel-Aviv University, Ramat Aviv, Israel
- Head and Neck Cancer Radiation Clinic, Institute of Oncology, Davidoff Cancer Center, Rabin Medical Center, Petach Tikva, Israel
| | - Tuvia Hadar
- Sackler Faculty of Medicine, Tel-Aviv University, Ramat Aviv, Israel
- Head and Neck Cancer Radiation Clinic, Institute of Oncology, Davidoff Cancer Center, Rabin Medical Center, Petach Tikva, Israel
| | - Mattan Levi
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Irit Ben-Aharon
- Institute of Oncology, Davidoff Cancer Center, Beilinson Hospital, Rabin Medical Center, Petach Tikva, Israel
| | - Izhack Haviv
- Faculty of Medicine in the Galilee, Bar Ilan University, Ramat Gan, Israel
| | - Rachela Popovtzer
- Faculty of Engineering & The Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, Israel
| | - Aron Popovtzer
- Sackler Faculty of Medicine, Tel-Aviv University, Ramat Aviv, Israel
- Head and Neck Cancer Radiation Clinic, Institute of Oncology, Davidoff Cancer Center, Rabin Medical Center, Petach Tikva, Israel
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Shwartz A, Betzer O, Kronfeld N, Kazimirsky G, Cazacu S, Finniss S, Lee HK, Motiei M, Dagan SY, Popovtzer R, Brodie C, Yadid G. Therapeutic Effect of Astroglia-like Mesenchymal Stem Cells Expressing Glutamate Transporter in a Genetic Rat Model of Depression. Am J Cancer Res 2017; 7:2690-2703. [PMID: 28819456 PMCID: PMC5558562 DOI: 10.7150/thno.18914] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 02/15/2017] [Indexed: 12/12/2022] Open
Abstract
Recent studies have proposed that abnormal glutamatergic neurotransmission and glial pathology play an important role in the etiology and manifestation of depression. It was postulated that restoration of normal glutamatergic transmission, by enhancing glutamate uptake, may have a beneficial effect on depression. We examined this hypothesis using unique human glial-like mesenchymal stem cells (MSCs), which in addition to inherent properties of migration to regions of injury and secretion of neurotrophic factors, were differentiated to express high levels of functional glutamate transporters (excitatory amino acid transporters; EAAT). Additionally, gold nanoparticles (GNPs), which serve as contrast agents for CT imaging, were loaded into the cells for non-invasive, real-time imaging and tracking of MSC migration and final location within the brain. MSC-EAAT (2×105; 10 μl) were administered (i.c.v.) to Flinder Sensitive Line rats (FSLs), a genetic model for depression, and longitudinal behavioral and molecular changes were monitored. FSL rats treated with MSC-EAAT showed attenuated depressive-like behaviors (measured by the forced swim test, novelty exploration test and sucrose self-administration paradigm), as compared to controls. CT imaging, Flame Atomic Absorption Spectroscopy analysis and immunohistochemistry showed that the majority of MSCs homed specifically to the dentate gyrus of the hippocampus, a region showing structural brain changes in depression, including loss of glial cells. mRNA and protein levels of EAAT1 and BDNF were significantly elevated in the hippocampus of MSC-EAAT-treated FSLs. Our findings indicate that MSC-EAATs effectively improve depressive-like manifestations, possibly in part by increasing both glutamate uptake and neurotropic factor secretion in the hippocampus.
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Betzer O, Shilo M, Opochinsky R, Barnoy E, Motiei M, Okun E, Yadid G, Popovtzer R. The effect of nanoparticle size on the ability to cross the blood-brain barrier: an in vivo study. Nanomedicine (Lond) 2017. [PMID: 28621578 DOI: 10.2217/nnm-2017-0022] [Citation(s) in RCA: 159] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
AIM Our goal was to develop an efficient nanoparticle-based system that can overcome the restrictive mechanism of the blood-brain barrier (BBB) by targeting insulin receptors and would thus enable drug delivery to the brain. METHODS Insulin-coated gold nanoparticles (INS-GNPs) were synthesized to serve as a BBB transport system. The effect of nanoparticle size (20, 50 and 70 nm) on their ability to cross the BBB was quantitatively investigated in Balb/C mice. RESULTS The most widespread biodistribution and highest accumulation within the brain were observed using 20 nm INS-GNPs, 2 h post injection. In vivo CT imaging revealed that particles migrated to specific brain regions, which are involved in neurodegenerative and neuropsychiatric disorders. CONCLUSION These findings promote the optimization of nanovehicles for transport of drugs through the BBB. The insulin coating of the particles enabled targeting of specific brain regions, suggesting the potential use of INS-GNPs for delivery of various treatments for brain-related disorders.
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Affiliation(s)
- Oshra Betzer
- Faculty of Engineering & the Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel.,The Leslie & Susan Gonda Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Malka Shilo
- Faculty of Engineering & the Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Renana Opochinsky
- Faculty of Engineering & the Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Eran Barnoy
- Faculty of Engineering & the Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Menachem Motiei
- Faculty of Engineering & the Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Eitan Okun
- The Leslie & Susan Gonda Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat Gan 5290002, Israel.,The Mina & Everard Goodman Faculty of Life sciences, Bar-Ilan University, Ramat Gan 5290002, Israel.,The Paul Feder Laboratory on Alzheimer's Disease Research, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Gal Yadid
- The Leslie & Susan Gonda Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat Gan 5290002, Israel.,The Mina & Everard Goodman Faculty of Life sciences, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Rachela Popovtzer
- Faculty of Engineering & the Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
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Meir R, Betzer O, Motiei M, Kronfeld N, Brodie C, Popovtzer R. Design principles for noninvasive, longitudinal and quantitative cell tracking with nanoparticle-based CT imaging. Nanomedicine: Nanotechnology, Biology and Medicine 2017; 13:421-429. [DOI: 10.1016/j.nano.2016.09.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Revised: 09/05/2016] [Accepted: 09/22/2016] [Indexed: 01/14/2023]
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Vegerhof A, Barnoy EA, Motiei M, Malka D, Danan Y, Zalevsky Z, Popovtzer R. Targeted Magnetic Nanoparticles for Mechanical Lysis of Tumor Cells by Low-Amplitude Alternating Magnetic Field. Materials (Basel) 2016; 9:ma9110943. [PMID: 28774062 PMCID: PMC5457194 DOI: 10.3390/ma9110943] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 10/30/2016] [Accepted: 11/17/2016] [Indexed: 11/16/2022]
Abstract
Currently available cancer therapies can cause damage to healthy tissue. We developed a unique method for specific mechanical lysis of cancer cells using superparamagnetic iron oxide nanoparticle rotation under a weak alternating magnetic field. Iron oxide core nanoparticles were coated with cetuximab, an anti-epidermal growth factor receptor antibody, for specific tumor targeting. Nude mice bearing a head and neck tumor were treated with cetuximab-coated magnetic nanoparticles (MNPs) and then received a 30 min treatment with a weak external alternating magnetic field (4 Hz) applied on alternating days (total of seven treatments, over 14 days). This treatment, compared to a pure antibody, exhibited a superior cell death effect over time. Furthermore, necrosis in the tumor site was detected by magnetic resonance (MR) images. Thermal camera images of head and neck squamous cell carcinoma cultures demonstrated that cell death occurred purely by a mechanical mechanism.
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Affiliation(s)
- Adi Vegerhof
- Faculty of Engineering & The Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 5290002, Israel.
| | - Eran A Barnoy
- Faculty of Engineering & The Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 5290002, Israel.
| | - Menachem Motiei
- Faculty of Engineering & The Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 5290002, Israel.
| | - Dror Malka
- Faculty of Engineering Holon Institute of Technology, Holon 5810201, Israel.
| | - Yossef Danan
- Faculty of Engineering & The Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 5290002, Israel.
| | - Zeev Zalevsky
- Faculty of Engineering & The Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 5290002, Israel.
| | - Rachela Popovtzer
- Faculty of Engineering & The Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 5290002, Israel.
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Yariv I, Haddad M, Duadi H, Motiei M, Fixler D. New optical sensing technique of tissue viability and blood flow based on nanophotonic iterative multi-plane reflectance measurements. Int J Nanomedicine 2016; 11:5237-5244. [PMID: 27785024 PMCID: PMC5066867 DOI: 10.2147/ijn.s119130] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Physiological substances pose a challenge for researchers since their optical properties change constantly according to their physiological state. Examination of those substances noninvasively can be achieved by different optical methods with high sensitivity. Our research suggests the application of a novel noninvasive nanophotonics technique, ie, iterative multi-plane optical property extraction (IMOPE) based on reflectance measurements, for tissue viability examination and gold nanorods (GNRs) and blood flow detection. The IMOPE model combines an experimental setup designed for recording light intensity images with the multi-plane iterative Gerchberg-Saxton algorithm for reconstructing the reemitted light phase and calculating its standard deviation (STD). Changes in tissue composition affect its optical properties which results in changes in the light phase that can be measured by its STD. We have demonstrated this new concept of correlating the light phase STD and the optical properties of a substance, using transmission measurements only. This paper presents, for the first time, reflectance based IMOPE tissue viability examination, producing a decrease in the computed STD for older tissues, as well as investigating their organic material absorption capability. Finally, differentiation of the femoral vein from adjacent tissues using GNRs and the detection of their presence within blood circulation and tissues are also presented with high sensitivity (better than computed tomography) to low quantities of GNRs (<3 mg).
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Affiliation(s)
- Inbar Yariv
- Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan, Israel
| | - Menashe Haddad
- Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel; Mayanei Hayeshua Medical Center, Benei Brak, Israel
| | - Hamootal Duadi
- Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan, Israel
| | - Menachem Motiei
- Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan, Israel
| | - Dror Fixler
- Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan, Israel
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Dreifuss T, Betzer O, Shilo M, Popovtzer A, Motiei M, Popovtzer R. Correction: A challenge for theranostics: is the optimal particle for therapy also optimal for diagnostics? Nanoscale 2016; 8:15357. [PMID: 27500921 DOI: 10.1039/c6nr90175a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Correction for 'A challenge for theranostics: is the optimal particle for therapy also optimal for diagnostics?' by Tamar Dreifuss, et al., Nanoscale, 2015, 7, 15175-15184.
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Affiliation(s)
- Tamar Dreifuss
- Faculty of Engineering and the Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel.
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30
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Motiei M, Dreifuss T, Betzer O, Panet H, Popovtzer A, Santana J, Abourbeh G, Mishani E, Popovtzer R. Differentiating Between Cancer and Inflammation: A Metabolic-Based Method for Functional Computed Tomography Imaging. ACS Nano 2016; 10:3469-77. [PMID: 26886076 DOI: 10.1021/acsnano.5b07576] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
One of the main limitations of the highly used cancer imaging technique, PET-CT, is its inability to distinguish between cancerous lesions and post treatment inflammatory conditions. The reason for this lack of specificity is that [(18)F]FDG-PET is based on increased glucose metabolic activity, which characterizes both cancerous tissues and inflammatory cells. To overcome this limitation, we developed a nanoparticle-based approach, utilizing glucose-functionalized gold nanoparticles (GF-GNPs) as a metabolically targeted CT contrast agent. Our approach demonstrates specific tumor targeting and has successfully distinguished between cancer and inflammatory processes in a combined tumor-inflammation mouse model, due to dissimilarities in angiogenesis occurring under different pathologic conditions. This study provides a set of capabilities in cancer detection, staging and follow-up, and can be applicable to a wide range of cancers that exhibit high metabolic activity.
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Affiliation(s)
- Menachem Motiei
- Faculty of Engineering and the Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University , Ramat-Gan 5290002, Israel
| | - Tamar Dreifuss
- Faculty of Engineering and the Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University , Ramat-Gan 5290002, Israel
| | - Oshra Betzer
- Faculty of Engineering and the Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University , Ramat-Gan 5290002, Israel
| | - Hana Panet
- Faculty of Engineering and the Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University , Ramat-Gan 5290002, Israel
| | - Aron Popovtzer
- Davidoff Cancer Center, Rabin Medical Center , Beilinson Campus, Petah Tiqwa 4941492, Israel
| | - Jordan Santana
- Faculty of Engineering and the Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University , Ramat-Gan 5290002, Israel
| | - Galith Abourbeh
- Cyclotron-Radiochemistry-MicroPET Unit, Hadassah-Hebrew University Hospital , Jerusalem 91120, Israel
| | - Eyal Mishani
- Cyclotron-Radiochemistry-MicroPET Unit, Hadassah-Hebrew University Hospital , Jerusalem 91120, Israel
| | - Rachela Popovtzer
- Faculty of Engineering and the Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University , Ramat-Gan 5290002, Israel
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Popovtzer A, Mizrachi A, Motiei M, Bragilovski D, Lubimov L, Levi M, Hilly O, Ben-Aharon I, Popovtzer R. Actively targeted gold nanoparticles as novel radiosensitizer agents: an in vivo head and neck cancer model. Nanoscale 2016; 8:2678-2685. [PMID: 26757746 DOI: 10.1039/c5nr07496g] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A major problem in the treatment of head and neck cancer today is the resistance of tumors to traditional radiation therapy, which results in 40% local failure, despite aggressive treatment. The main objective of this study was to develop a technique which will overcome tumor radioresistance by increasing the radiation absorbed in the tumor using cetuximab targeted gold nanoparticles (GNPs), in clinically relevant energies and radiation dosage. In addition, we have investigated the biological mechanisms underlying tumor shrinkage and the in vivo toxicity of GNP. The results showed that targeted GNP enhanced the radiation effect and had a significant impact on tumor growth (P < 0.001). The mechanism of radiation enhancement was found to be related to earlier and greater apoptosis (TUNEL assay), angiogenesis inhibition (by CD34 level) and diminished repair mechanism (PCNA staining). Additionally, GNPs have been proven to be safe as no evidence of toxicity has been observed.
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Affiliation(s)
- Aron Popovtzer
- Head and Neck Cancer Radiation Clinic, Institute of Oncology, Davidoff Cancer Center, Rabin Medical Center, Petach Tikva 49100, Israel. and Sackler Faculty of Medicine, Tel-Aviv University, Ramat Aviv, Israel
| | - Aviram Mizrachi
- Head and Neck Cancer Radiation Clinic, Institute of Oncology, Davidoff Cancer Center, Rabin Medical Center, Petach Tikva 49100, Israel. and Sackler Faculty of Medicine, Tel-Aviv University, Ramat Aviv, Israel
| | - Menachem Motiei
- Faculty of Engineering & The Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Dimitri Bragilovski
- Head and Neck Cancer Radiation Clinic, Institute of Oncology, Davidoff Cancer Center, Rabin Medical Center, Petach Tikva 49100, Israel.
| | - Leon Lubimov
- Head and Neck Cancer Radiation Clinic, Institute of Oncology, Davidoff Cancer Center, Rabin Medical Center, Petach Tikva 49100, Israel.
| | - Mattan Levi
- Sackler Faculty of Medicine, Tel-Aviv University, Ramat Aviv, Israel
| | - Ohad Hilly
- Head and Neck Cancer Radiation Clinic, Institute of Oncology, Davidoff Cancer Center, Rabin Medical Center, Petach Tikva 49100, Israel.
| | - Irit Ben-Aharon
- Head and Neck Cancer Radiation Clinic, Institute of Oncology, Davidoff Cancer Center, Rabin Medical Center, Petach Tikva 49100, Israel. and Sackler Faculty of Medicine, Tel-Aviv University, Ramat Aviv, Israel
| | - Rachela Popovtzer
- Faculty of Engineering & The Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
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Shilo M, Berenstein P, Dreifuss T, Nash Y, Goldsmith G, Kazimirsky G, Motiei M, Frenkel D, Brodie C, Popovtzer R. Insulin-coated gold nanoparticles as a new concept for personalized and adjustable glucose regulation. Nanoscale 2015; 7:20489-96. [PMID: 26583784 DOI: 10.1039/c5nr04881h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Diabetes mellitus is a chronic metabolic disease, characterized by high blood glucose levels, affecting millions of people around the world. Currently, the main treatment for diabetes requires multiple daily injections of insulin and self-monitoring of blood glucose levels, which markedly affect patients' quality of life. In this study we present a novel strategy for controlled and prolonged glucose regulation, based on the administration of insulin-coated gold nanoparticles (INS-GNPs). We show that both intravenous and subcutaneous injection of INS-GNPs into a mouse model of type 1 diabetes decreases blood glucose levels for periods over 3 times longer than free insulin. We further showed that conjugation of insulin to GNPs prevented its rapid degradation by the insulin-degrading-enzyme, and thus allows controlled and adjustable bio-activity. Moreover, we assessed different sizes and concentrations of INS-GNPs, and found that both parameters have a critical effect in vivo, enabling specific adjustment of blood glucose levels. These findings have the potential to improve patient compliance in diabetes mellitus.
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Affiliation(s)
- Malka Shilo
- Faculty of Engineering & Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel.
| | - Peter Berenstein
- Everard and Mina Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Tamar Dreifuss
- Faculty of Engineering & Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel.
| | - Yuval Nash
- Department of Neurobiology & Sagol School for Neuroscience, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 6997801 Israel and Department of Neurobiology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 6997801 Israel
| | - Guy Goldsmith
- Department of Neurobiology & Sagol School for Neuroscience, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 6997801 Israel
| | - Gila Kazimirsky
- Everard and Mina Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Menachem Motiei
- Faculty of Engineering & Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel.
| | - Dan Frenkel
- Department of Neurobiology & Sagol School for Neuroscience, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 6997801 Israel and Department of Neurobiology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 6997801 Israel
| | - Chaya Brodie
- Everard and Mina Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Rachela Popovtzer
- Faculty of Engineering & Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel.
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Dreifuss T, Betzer O, Shilo M, Popovtzer A, Motiei M, Popovtzer R. A challenge for theranostics: is the optimal particle for therapy also optimal for diagnostics? Nanoscale 2015; 7:15175-15184. [PMID: 26313344 DOI: 10.1039/c5nr03119b] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Theranostics is defined as the combination of therapeutic and diagnostic capabilities in the same agent. Nanotechnology is emerging as an efficient platform for theranostics, since nanoparticle-based contrast agents are powerful tools for enhancing in vivo imaging, while therapeutic nanoparticles may overcome several limitations of conventional drug delivery systems. Theranostic nanoparticles have drawn particular interest in cancer treatment, as they offer significant advantages over both common imaging contrast agents and chemotherapeutic drugs. However, the development of platforms for theranostic applications raises critical questions; is the optimal particle for therapy also the optimal particle for diagnostics? Are the specific characteristics needed to optimize diagnostic imaging parallel to those required for treatment applications? This issue is examined in the present study, by investigating the effect of the gold nanoparticle (GNP) size on tumor uptake and tumor imaging. A series of anti-epidermal growth factor receptor conjugated GNPs of different sizes (diameter range: 20-120 nm) was synthesized, and then their uptake by human squamous cell carcinoma head and neck cancer cells, in vitro and in vivo, as well as their tumor visualization capabilities were evaluated using CT. The results showed that the size of the nanoparticle plays an instrumental role in determining its potential activity in vivo. Interestingly, we found that although the highest tumor uptake was obtained with 20 nm C225-GNPs, the highest contrast enhancement in the tumor was obtained with 50 nm C225-GNPs, thus leading to the conclusion that the optimal particle size for drug delivery is not necessarily optimal for imaging. These findings stress the importance of the investigation and design of optimal nanoparticles for theranostic applications.
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Affiliation(s)
- Tamar Dreifuss
- Faculty of Engineering and the Institutes of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan, Israel.
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Abstract
Cell-based therapy offers a promising solution for the treatment of diseases and injuries that conventional medicines and therapies cannot cure effectively, and thus comprises an encouraging arena for future medical breakthroughs. The development of an accurate and quantitative noninvasive cell tracking technique is a highly challenging task that could help in evaluating the effectiveness of treatments. Moreover, cell tracking could provide essential knowledge regarding the fundamental trafficking patterns and poorly understood mechanisms underlying the success or failure of cell therapy. This article focuses on gold nanoparticles, which provide cells with 'visibility' in a variety of imaging modalities for stem cell therapy, immune cell therapy and cancer treatment. Current challenges and future prospects relating to the use of gold nanoparticles in such roles are discussed.
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Affiliation(s)
- Rinat Meir
- Bar-Ilan University, Faculty of Engineering & the Institute of Nanotechnology & Advanced Materials, Ramat Gan 52900, Israel
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Meir R, Shamalov K, Betzer O, Motiei M, Horovitz-Fried M, Yehuda R, Popovtzer A, Popovtzer R, Cohen CJ. Nanomedicine for Cancer Immunotherapy: Tracking Cancer-Specific T-Cells in Vivo with Gold Nanoparticles and CT Imaging. ACS Nano 2015; 9:6363-72. [PMID: 26039633 DOI: 10.1021/acsnano.5b01939] [Citation(s) in RCA: 144] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Application of immune cell-based therapy in routine clinical practice is challenging due to the poorly understood mechanisms underlying success or failure of treatment. Development of accurate and quantitative imaging techniques for noninvasive cell tracking can provide essential knowledge for elucidating these mechanisms. We designed a novel method for longitudinal and quantitative in vivo cell tracking, based on the superior visualization abilities of classical X-ray computed tomography (CT), combined with state-of-the-art nanotechnology. Herein, T-cells were transduced to express a melanoma-specific T-cell receptor and then labeled with gold nanoparticles (GNPs) as a CT contrast agent. The GNP-labeled T-cells were injected intravenously to mice bearing human melanoma xenografts, and whole-body CT imaging allowed examination of the distribution, migration, and kinetics of T-cells. Using CT, we found that transduced T-cells accumulated at the tumor site, as opposed to nontransduced cells. Labeling with gold nanoparticles did not affect T-cell function, as demonstrated both in vitro, by cytokine release and proliferation assays, and in vivo, as tumor regression was observed. Moreover, to validate the accuracy and reliability of the proposed cell tracking technique, T-cells were labeled both with green fluorescent protein for fluorescence imaging, and with GNPs for CT imaging. A remarkable correlation in signal intensity at the tumor site was observed between the two imaging modalities, at all time points examined, providing evidence for the accuracy of our CT cell tracking abilities. This new method for cell tracking with CT offers a valuable tool for research, and more importantly for clinical applications, to study the fate of immune cells in cancer immunotherapy.
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Affiliation(s)
- Rinat Meir
- †Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan 52900, Israel
| | - Katerina Shamalov
- ‡Laboratory of Tumor Immunology and Immunotherapy, Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 52900, Israel
| | - Oshra Betzer
- †Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan 52900, Israel
| | - Menachem Motiei
- †Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan 52900, Israel
| | - Miryam Horovitz-Fried
- ‡Laboratory of Tumor Immunology and Immunotherapy, Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 52900, Israel
| | - Ronen Yehuda
- §The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Aron Popovtzer
- ∥Davidoff Cancer Center, Rabin Medical Center, Beilinson Campus, Petah Tiqwa 49100, Israel
| | - Rachela Popovtzer
- †Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan 52900, Israel
| | - Cyrille J Cohen
- ‡Laboratory of Tumor Immunology and Immunotherapy, Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 52900, Israel
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36
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Shilo M, Sharon A, Baranes K, Motiei M, Lellouche JPM, Popovtzer R. The effect of nanoparticle size on the probability to cross the blood-brain barrier: an in-vitro endothelial cell model. J Nanobiotechnology 2015; 13:19. [PMID: 25880565 PMCID: PMC4359781 DOI: 10.1186/s12951-015-0075-7] [Citation(s) in RCA: 132] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 01/31/2015] [Indexed: 01/29/2023] Open
Abstract
Background During the last decade nanoparticles have gained attention as promising drug delivery agents that can transport through the blood brain barrier. Recently, several studies have demonstrated that specifically targeted nanoparticles which carry a large payload of therapeutic agents can effectively enhance therapeutic agent delivery to the brain. However, it is difficult to draw definite design principles across these studies, owing to the differences in material, size, shape and targeting agents of the nanoparticles. Therefore, the main objective of this study is to develop general design principles that link the size of the nanoparticle with the probability to cross the blood brain barrier. Specifically, we investigate the effect of the nanoparticle size on the probability of barbiturate coated GNPs to cross the blood brain barrier by using bEnd.3 brain endothelial cells as an in vitro blood brain barrier model. Results The results show that GNPs of size 70 nm are optimal for the maximum amount of gold within the brain cells, and that 20 nm GNPs are the optimal size for maximum free surface area. Conclusions These findings can help understand the effect of particle size on the ability to cross the blood brain barrier through the endothelial cell model, and design nanoparticles for brain imaging/therapy contrast agents.
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Affiliation(s)
- Malka Shilo
- Faculty of Engineering & the Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, 52900, Israel.
| | - Anat Sharon
- The Department of Chemistry & the Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, 52900, Israel.
| | - Koby Baranes
- Faculty of Engineering & the Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, 52900, Israel.
| | - Menachem Motiei
- Faculty of Engineering & the Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, 52900, Israel.
| | - Jean-Paul M Lellouche
- The Department of Chemistry & the Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, 52900, Israel.
| | - Rachela Popovtzer
- Faculty of Engineering & the Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, 52900, Israel.
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37
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Betzer O, Shwartz A, Motiei M, Kazimirsky G, Gispan I, Damti E, Brodie C, Yadid G, Popovtzer R. Nanoparticle-based CT imaging technique for longitudinal and quantitative stem cell tracking within the brain: application in neuropsychiatric disorders. ACS Nano 2014; 8:9274-9285. [PMID: 25133802 DOI: 10.1021/nn503131h] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A critical problem in the development and implementation of stem cell-based therapy is the lack of reliable, noninvasive means to image and trace the cells post-transplantation and evaluate their biodistribution, final fate, and functionality. In this study, we developed a gold nanoparticle-based CT imaging technique for longitudinal mesenchymal stem cell (MSC) tracking within the brain. We applied this technique for noninvasive monitoring of MSCs transplanted in a rat model for depression. Our research reveals that cell therapy is a potential approach for treating neuropsychiatric disorders. Our results, which demonstrate that cell migration could be detected as early as 24 h and up to one month post-transplantation, revealed that MSCs specifically navigated and homed to distinct depression-related brain regions. We further developed a noninvasive quantitative CT ruler, which can be used to determine the number of cells residing in a specific brain region, without tissue destruction or animal scarification. This technique may have a transformative effect on cellular therapy, both for basic research and clinical applications.
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Affiliation(s)
- Oshra Betzer
- Gonda Brain Research Center, Bar-Ilan University , Ramat-Gan 52900, Israel
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38
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Ankri R, Leshem-Lev D, Fixler D, Popovtzer R, Motiei M, Kornowski R, Hochhauser E, Lev EI. Gold Nanorods as Absorption Contrast Agents for the Noninvasive Detection of Arterial Vascular Disorders Based on Diffusion Reflection Measurements. Nano Lett 2014; 14:2681-7. [PMID: 24697682 DOI: 10.1021/nl500573d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Affiliation(s)
- Rinat Ankri
- Faculty
of Engineering and Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Dorit Leshem-Lev
- Cardiac
Research
Laboratories at the Felsenstein Medical Research Center and the Cardiology
Department, Rabin Medical Center, Petah-Tikva, Israel
| | - Dror Fixler
- Faculty
of Engineering and Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Rachela Popovtzer
- Faculty
of Engineering and Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Menachem Motiei
- Faculty
of Engineering and Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Ran Kornowski
- Cardiac
Research
Laboratories at the Felsenstein Medical Research Center and the Cardiology
Department, Rabin Medical Center, Petah-Tikva, Israel
| | - Edith Hochhauser
- Cardiac
Research
Laboratories at the Felsenstein Medical Research Center and the Cardiology
Department, Rabin Medical Center, Petah-Tikva, Israel
| | - Eli I. Lev
- Cardiac
Research
Laboratories at the Felsenstein Medical Research Center and the Cardiology
Department, Rabin Medical Center, Petah-Tikva, Israel
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39
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Shilo M, Motiei M, Hana P, Popovtzer R. Transport of nanoparticles through the blood-brain barrier for imaging and therapeutic applications. Nanoscale 2014; 6:2146-52. [PMID: 24362586 DOI: 10.1039/c3nr04878k] [Citation(s) in RCA: 129] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A critical problem in the treatment of neurodegenerative disorders and diseases, such as Alzheimer's and Parkinson's, is the incapability to overcome the restrictive mechanism of the blood-brain barrier (BBB) and to deliver important therapeutic agents to the brain. During the last decade, nanoparticles have gained attention as promising drug delivery agents that can transport across the BBB and increase the uptake of appropriate drugs in the brain. In this study we have developed insulin-targeted gold nanoparticles (INS-GNPs) and investigated quantitatively the amount of INS-GNPs that cross the BBB by the receptor-mediated endocytosis process. For this purpose, INS-GNPs and control GNPs were injected into the tail vein of male BALB/c mice. Major organs were then extracted and a blood sample was taken from the mice, and thereafter analyzed for gold content by flame atomic absorption spectroscopy. Results show that two hours post-intravenous injection, the amount of INS-GNPs found in mouse brains is over 5 times greater than that of the control, untargeted GNPs. Results of further experimentation on a rat model show that INS-GNPs can also serve as CT contrast agents to highlight specific brain regions in which they accumulate. Due to the fact that they can overcome the restrictive mechanism of the BBB, this approach could be a potentially valuable tool, helping to confront the great challenge of delivering important imaging and therapeutic agents to the brain for detection and treatment of neurodegenerative disorders and diseases.
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Affiliation(s)
- Malka Shilo
- Bar-Ilan University, Faculty of Engineering & Institute of Nanotechnology & Advanced Materials, Ramat Gan 52900, Israel.
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40
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Ankri R, Peretz D, Motiei M, Sella-Tavor O, Popovtzer R. New optical method for enhanced detection of colon cancer by capsule endoscopy. Nanoscale 2013; 5:9806-9811. [PMID: 23969635 DOI: 10.1039/c3nr02396f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
PillCam®COLON capsule endoscopy (CE), a non-invasive diagnostic tool of the digestive tract, has dramatically changed the diagnostic approach and has become an attractive alternative to the conventional colonoscopy for early detection of colorectal cancer. However, despite the significant progress and non-invasive detection capability, studies have shown that its sensitivity and specificity is lower than that of conventional colonoscopy. This work presents a new optical detection method, specifically tailored to colon cancer detection and based on the well-known optical properties of immune-conjugated gold nanorods (GNRs). We show, on a colon cancer model implanted in a chick chorioallantoic membrane (CAM), that this detection method enables conclusive differentiation between cancerous and normal tissues, where neither the distance between the light source and the intestinal wall, nor the background signal, affects the monitored signal. This optical method, which can easily be integrated in CE, is expected to reduce false positive and false negative results and improve identification of tumors and micro metastases.
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Affiliation(s)
- Rinat Ankri
- Bar-Ilan University, Faculty of Engineering & Institute of Nanotechnology & Advanced Materials, Ramat Gan 52900, Israel.
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41
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Ankri R, Meiri A, Lau SI, Motiei M, Popovtzer R, Fixler D. Intercoupling surface plasmon resonance and diffusion reflection measurements for real-time cancer detection. J Biophotonics 2013; 6:188-96. [PMID: 22461296 DOI: 10.1002/jbio.201200016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2012] [Revised: 03/12/2012] [Accepted: 03/12/2012] [Indexed: 05/11/2023]
Abstract
Spatial diffusion reflection (DR) measurements of gold nanorods (GNR) were recently suggested as a simple and highly sensitive non-invasive and non-ionizing method for real-time cancer detection. In this paper we demonstrate that wavelength dependent DR measurements enable the spectral red-shift observation of highly concentrated GNR. By conjugating targeting moieties to the GNR, large density of GNR can specifically home onto cancer cells. The inter-particle plasmon resonance pattern of the highly concentrated GNR leads to an extension and a red-shift (Δλ) in the absorption spectrum of the concentrated GNR. Dark-field microscopy was used in order to measure the expected Δλ in different GNR concentrations in vitro. Double-wavelength DR measurements of tissue-like phantoms and tumor bearing mice containing different GNR concentrations are presented. We show that the DR profile of the highly concentrated GNR directly correlate with the spectral extension and red-shift. This presented work suggests that wavelength dependent DR method can serve as a promising tool for real-time superficial tumor detection.
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Affiliation(s)
- Rinat Ankri
- Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan, 52900, Israel
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42
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Jakobsohn K, Motiei M, Sinvani M, Popovtzer R. Towards real-time detection of tumor margins using photothermal imaging of immune-targeted gold nanoparticles. Int J Nanomedicine 2012; 7:4707-13. [PMID: 22956871 PMCID: PMC3431967 DOI: 10.2147/ijn.s34157] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND One of the critical problems in cancer management is local recurrence of disease. Between 20% and 30% of patients who undergo tumor resection surgery require reoperation due to incomplete excision. Currently, there are no validated methods for intraoperative tumor margin detection. In the present work, we demonstrate the potential use of gold nanoparticles (GNPs) as a novel contrast agent for photothermal molecular imaging of cancer. METHODS Phantoms containing different concentrations of GNPs were irradiated with continuous-wave laser and measured with a thermal imaging camera which detected the temperature field of the irradiated phantoms. RESULTS The results clearly demonstrate the ability to distinguish between cancerous cells specifically targeted with GNPs and normal cells. This technique, which allows highly sensitive discrimination between adjacent low GNP concentrations, will allow tumor margin detection while the temperature increases by only a few degrees Celsius (for GNPs in relevant biological concentrations). CONCLUSION We expect this real-time intraoperative imaging technique to assist surgeons in determining clear tumor margins and to maximize the extent of tumor resection while sparing normal background tissue.
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Affiliation(s)
- Kobi Jakobsohn
- Faculty of Engineering, Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan, Israel
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43
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Shilo M, Reuveni T, Motiei M, Popovtzer R. Nanoparticles as computed tomography contrast agents: current status and future perspectives. Nanomedicine (Lond) 2012; 7:257-69. [PMID: 22339135 DOI: 10.2217/nnm.11.190] [Citation(s) in RCA: 154] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The importance of computed tomography (CT) as one of the leading radiology technologies applied in the field of biomedical imaging escalated the development of nanoparticles as the next generation CT contrast agents. Nanoparticles are expected to play a major role in the future of medical diagnostics due to their many advantages over the conventional contrast agents, such as prolonged blood circulation time, controlled biological clearance pathways and specific molecular targeting capabilities. This paper will describe the basic design principles of nanoparticle-based CT contrast agents and review the state-of-the-art developments and clinical applications of blood pool, passive and active targeting CT contrast agents.
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Affiliation(s)
- Malka Shilo
- School of Engineering and the Institute of Nanotechnology & Advanced Materials, Bar Ilan University, Ramat Gan, 52900, Israel
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44
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Motiei M, Tavalaee M, Rabiei F, Hajihosseini R, Nasr-Esfahani MH. Evaluation of HSPA2 in fertile and infertile individuals. Andrologia 2012; 45:66-72. [DOI: 10.1111/j.1439-0272.2012.01315.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2012] [Indexed: 11/28/2022] Open
Affiliation(s)
| | - M. Tavalaee
- Department of Reproduction and Development, Reproductive Biomedicine Research Center; Royan Institute of Biotechnology, ACECR; Isfahan; Iran
| | - F. Rabiei
- Department of Cell & Molecular Biotechnology, Cell Sciences Research Center; Royan Institute for Biotechnology, ACECR; Isfahan; Iran
| | - R. Hajihosseini
- Department of Biochemistry; Payame Noor University; Tehran; Iran
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45
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Ankri R, Duadi H, Motiei M, Fixler D. In-vivo Tumor detection using diffusion reflection measurements of targeted gold nanorods - a quantitative study. J Biophotonics 2012; 5:263-73. [PMID: 22234916 DOI: 10.1002/jbio.201100120] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2011] [Revised: 12/15/2011] [Accepted: 12/16/2011] [Indexed: 05/20/2023]
Abstract
The ability to quantitatively and non-invasively detect nanoparticles has important implications on their development as an in-vivo cancer diagnostic tool. The Diffusion Reflection (DR) method is a simple, non-invasive imaging technique which has been proven useful for the investigation of tissue's optical parameters. In this study, Monte Carlo (MC) simulations, tissue-like phantom experiments and in-vivo measurements of the reflected light intensity from tumor bearing mice are presented. Following intravenous injection of antibody conjugated poly (ethylene glycol)-coated (PEGylated) gold nanorods (GNR) to tumor-bearing mice, accumulation of GNR in the tumor was clearly detected by the DR profile of the tumor. The ability of DR measurements to quantitate in-vivo the concentration of the GNR in the tumor was demonstrated and validated with Flame Atomic Absorption spectroscopy results. With GNR as absorbing contrast agents, DR has important potential applications in the image guided therapy of superficial tumors such as head and neck cancer, breast cancer and melanoma.
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Affiliation(s)
- Rinat Ankri
- Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan, 52900, Israel
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46
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Ankri R, Peretz V, Motiei M, Popovtzer R, Fixler D. A new method for cancer detection based on diffusion reflection measurements of targeted gold nanorods. Int J Nanomedicine 2012; 7:449-55. [PMID: 22334777 PMCID: PMC3273979 DOI: 10.2147/ijn.s28424] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
This paper presents a new method for cancer detection based on diffusion reflection measurements. This method enables discrimination between cancerous and noncancerous tissues due to the intense light absorption of gold nanorods (GNRs), which are selectively targeted to squamous cell carcinoma head and neck cancer cells. Presented in this paper are tissue-like phantom and in vivo results that demonstrate the high sensitivity of diffusion reflection measurements to the absorption differences between the GNR-targeted cancerous tissue and normal, noncancerous tissue. This noninvasive and nonionizing optical detection method provides a highly sensitive, simple, and inexpensive tool for cancer detection.
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Affiliation(s)
- Rinat Ankri
- Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 52900, Israel
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47
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Abstract
In recent years, advances in molecular biology and cancer research have led to the identification of sensitive and specific biomarkers that associate with various types of cancer. However, in vivo cancer detection methods with computed tomography, based on tracing and detection of these molecular cancer markers, are unavailable today. This paper demonstrates in vivo the feasibility of cancer diagnosis based on molecular markers rather than on anatomical structures, using clinical computed tomography. Anti-epidermal growth factor receptor conjugated gold nanoparticles (30 nm) were intravenously injected into nude mice implanted with human squamous cell carcinoma head and neck cancer. The results clearly demonstrate that a small tumor, which is currently undetectable through anatomical computed tomography, is enhanced and becomes clearly visible by the molecularly-targeted gold nanoparticles. It is further shown that active tumor targeting is more efficient and specific than passive targeting. This noninvasive and nonionizing molecular cancer imaging tool can facilitate early cancer detection and can provide researchers with a new technique to investigate in vivo the expression and activity of cancer-related biomarkers and molecular processes.
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Affiliation(s)
- Tobi Reuveni
- Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar-ilan University, Ramat Gan, Israel
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48
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Huang W, Liu S, Tang X, Motiei M, Koltypin Y, Gedanken A. Interaction between Ti-gel and silver, copper, as well as nickel compounds under ultrasound irradiation. Res Chem Intermed 2004. [DOI: 10.1163/1568567041856891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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49
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Cohen JS, Motiei M, Carmi S, Shiperto D, Yefet O, Ringel I. Determination of intracellular pH and compartmentation using diffusion-weighted NMR spectroscopy with pH-sensitive indicators. Magn Reson Med 2004; 51:900-3. [PMID: 15122671 DOI: 10.1002/mrm.20034] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The intracellular pH (pHi) of a series of cancer cell lines was determined using the pH-sensitive indicators imidazole (Im) or histidine (His) and diffusion-weighted (DW) proton NMR spectroscopy. The DW method allows the observation at high magnetic field gradient values of only the slow-moving (intracellular) components, thus ensuring complete separation between intra- and extracellular components. Using the chemical shift difference (deltadelta) between the imidazole ring C2-H and C4(5)-H peaks, we were able to measure the pHi independently of chemical shift standardization. With His, the cell lines gave pHi values of approximately 6.5-7.0, whereas with Im, a second, more acidic compartment (pHi = 5.5-5.8) was also observed. An inverse correlation was also found between pHi and the intracellular lactate concentration. This method may be applicable to in vivo pH determinations.
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Affiliation(s)
- Jack S Cohen
- Department of Pharmacology, Faculty of Medicine, Hebrew University, Jerusalem, Israel
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50
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Topaz M, Motiei M, Assia E, Meyerstein D, Meyerstein N, Gedanken A. Acoustic cavitation in phacoemulsification: chemical effects, modes of action and cavitation index. Ultrasound Med Biol 2002; 28:775-784. [PMID: 12113790 DOI: 10.1016/s0301-5629(02)00514-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
High-intensity ultrasound (US) energy (HIUE) has been extensively used in the last 3 decades in a wide range of surgical procedures, including phacoemulsification. The generation of radicals and sonoluminescence (SL) by application of continuous-wave (CW) HIUE to an aqueous medium under conditions simulating cataract phacoemulsification surgery is demonstrated by electron paramagnetic resonance (EPR) spectroscopy and a sensitive photon-detecting system. The findings provide direct evidence for the generation of acoustic cavitation in the simulated intraocular environment, pointing out that generation of acoustic cavitation in clinical phacoemulsification and other surgical applications of US is possible. The findings imply that the effects of acoustic cavitation in aqueous medium may contribute to the endothelial damage observed clinically following phacoemulsification cataract surgery. Saturation of the irrigating solution with various gases modifies the acoustic cavitation. Saturation of the irrigating solution with CO2 practically eliminates acoustic cavitation, with the concomitant elimination of radicals and SonL. CO2 may be utilized clinically to suppress acoustic cavitation in phacoemulsification and other medical applications. A cavitation index (CI) is introduced for the purpose of standardizing phacoemulsification instrumentation and other medical US devices that employ HIUE.
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Affiliation(s)
- Moris Topaz
- Hillel Yaffe Medical Center, Hadera, Israel.
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