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Li Q, Niu F, Yang H, Xu D, Dai J, Li J, Chen C, Sun L, Zhang L. Magnetically Actuated Soft Microrobot with Environmental Adaptative Multimodal Locomotion Towards Targeted Delivery. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2406600. [PMID: 39316063 DOI: 10.1002/advs.202406600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Revised: 08/24/2024] [Indexed: 09/25/2024]
Abstract
The development of environmentally adaptive solutions for magnetically actuated microrobots to enable targeted delivery in complex and confined fluid environments presents a significant challenge. Inspired by the natural locomotion of crucian carp, a barbell-shaped soft microrobot (MBS2M) is proposed. A mechano-electromagnetic hybrid actuation system is developed to generate oscillating magnetic fields to manipulate the microrobot. The MBS2M can seamlessly transition between three fundamental locomotion modes: fast navigation (FN), high-precision navigation (HPN), and fixed-point rotation (FPR). Moreover, the MBS2M can move in reverse without turning. The multimodal locomotion endows the MBS2M's adaptability in diverse environments. It can smoothly pass through confined channels, climb over obstacles, overcome gravity for vertical motion, track complex pathways, traverse viscous environments, overcome low fluid resistance, and navigate complex spaces mimicking in vivo environments. Additionally, the MBS2M is capable of drug loading and release in response to ultrasound excitation. In an ex vivo porcine liver vein, the microrobot demonstrated targeted navigation under ultrasound guidance, showcasing its potential for specialized in vivo tasks.
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Affiliation(s)
- Qingwei Li
- Robotics and Microsystems Center, School of Mechanical and Electrical Engineering, Soochow University, Suzhou, 215000, China
| | - Fuzhou Niu
- School of Mechanical Engineering, Suzhou University of Science and Technology, Suzhou, 215000, China
| | - Hao Yang
- Robotics and Microsystems Center, School of Mechanical and Electrical Engineering, Soochow University, Suzhou, 215000, China
| | - Dongqin Xu
- Robotics and Microsystems Center, School of Mechanical and Electrical Engineering, Soochow University, Suzhou, 215000, China
| | - Jun Dai
- Department of Orthopedic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215004, China
| | - Jing Li
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215004, China
| | - Chenshu Chen
- Robotics and Microsystems Center, School of Mechanical and Electrical Engineering, Soochow University, Suzhou, 215000, China
| | - Lining Sun
- Robotics and Microsystems Center, School of Mechanical and Electrical Engineering, Soochow University, Suzhou, 215000, China
| | - Li Zhang
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Hong Kong, NT 999077, Hong Kong
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Wei J, Xu H, Sun Y, Liu Y, Yan R, Chen Y, Zhang Z. Magnetite Nanoparticle Assemblies and Their Biological Applications: A Review. Molecules 2024; 29:4160. [PMID: 39275008 PMCID: PMC11397167 DOI: 10.3390/molecules29174160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2024] [Revised: 08/25/2024] [Accepted: 08/29/2024] [Indexed: 09/16/2024] Open
Abstract
Magnetite nanoparticles (Fe3O4 NPs) have garnered significant attention over the past twenty years, primarily due to their superparamagnetic properties. These properties allow the NPs to respond to external magnetic fields, making them particularly useful in various technological applications. One of the most fascinating aspects of Fe3O4 NPs is their ability to self-assemble into complex structures. Research over this period has focused heavily on how these nanoparticles can be organized into a variety of superstructures, classified by their dimensionality-namely one-dimensional (1D), two-dimensional (2D), and three-dimensional (3D) configurations. Despite a wealth of studies, the literature lacks a systematic review that synthesizes these findings. This review aims to fill that gap by providing a thorough overview of the recent progress made in the fabrication and organization of Fe3O4 NP assemblies via a bottom-up self-assembly approach. This methodology enables the controlled construction of assemblies at the nanoscale, which can lead to distinctive functionalities compared to their individual counterparts. Furthermore, the review explores the diverse applications stemming from these nanoparticle assemblies, particularly emphasizing their contributions to important areas such as imaging, drug delivery, and the diagnosis and treatment of cancer.
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Affiliation(s)
- Jinjian Wei
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Hong Xu
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Yating Sun
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Yingchun Liu
- Jinan Guoke Medical Technology Development Co., Ltd., Jinan 250000, China
| | - Ran Yan
- Jinan Petrochemical Design Institute, Jinan 250100, China
| | - Yuqin Chen
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Zhide Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
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Blümler P, Raudzus F, Schmid F. A comprehensive approach to characterize navigation instruments for magnetic guidance in biological systems. Sci Rep 2024; 14:7879. [PMID: 38570608 PMCID: PMC10991419 DOI: 10.1038/s41598-024-58091-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 03/25/2024] [Indexed: 04/05/2024] Open
Abstract
Achieving non-invasive spatiotemporal control over cellular functions, tissue organization, and behavior is a desirable aim for advanced therapies. Magnetic fields, due to their negligible interaction with biological matter, are promising for in vitro and in vivo applications, even in deep tissues. Particularly, the remote manipulation of paramagnetic (including superparamagnetic and ferromagnetic, all with a positive magnetic susceptibility) entities through magnetic instruments has emerged as a promising approach across various biological contexts. However, variations in the properties and descriptions of these instruments have led to a lack of reproducibility and comparability among studies. This article addresses the need for standardizing the characterization of magnetic instruments, with a specific focus on their ability to control the movement of paramagnetic objects within organisms. While it is well known that the force exerted on magnetic particles depends on the spatial variation (gradient) of the magnetic field, the magnitude of the field is often overlooked in the literature. Therefore, we comprehensively analyze and discuss both actors and propose a novel descriptor, termed 'effective gradient', which combines both dependencies. To illustrate the importance of both factors, we characterize different magnet systems and relate them to experiments involving superparamagnetic nanoparticles. This standardization effort aims to enhance the reproducibility and comparability of studies utilizing magnetic instruments for biological applications.
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Affiliation(s)
- Peter Blümler
- Institute of Physics, University of Mainz, 55128, Mainz, Germany.
| | - Fabian Raudzus
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.
- Neuronal Signaling and Regeneration Unit, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
- Medical Education Center/International Education Section, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
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Synthesis and characterization of a smart polymer-coated core–shell MnFe2O4@ organometallic framework for targeted drug delivery. CHEMICAL PAPERS 2023. [DOI: 10.1007/s11696-023-02750-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
AbstractScientists are currently working to develop more effective and less harmful methods of delivering drugs to tissue. One method is to use a special type of carrier to help the drug get to the right place in the body. In this study, an organometallic framework nanocarrier with the formula IRMOF-3 [Zn4O(NH2-BDC)3] was successfully prepared, containing magnetic nanoparticles of manganese ferrite (MnFe2O4) and the drug doxorubicin encapsulated in a pH- and temperature-sensitive smart polymer of poly-N-isopropylacrylamide. Doxorubicin, an anticancer drug, was loaded into the pores of a magnetic organometallic framework and modified with the smart polymer poly(N-isopropylacrylamide-co-AA), which has a lower critical solution temperature (LCST) of less than 38 °C. The synthesis of magnetic nanoparticles and magnetic organometallic frameworks encapsulated in smart polymer was investigated using various analytical techniques such as Fourier transform infrared spectrometer, thermal stability analysis, BET, and VSM. The particles in the synthesized nanocarrier are uniform in size, have high magnetic properties, and are thermally stable. The effective surface area is 7.26 m2/g, and the pore volume is 166.394 m. The drug carrier has the ability to load up to 78% of the drug into the solution. The highest drug release was observed when the pH was 5 and the temperature was higher than the LCST. 71% of cancer cells were destroyed by the drug carrier in the culture medium. This nanosystem, designed with more drug retention, reduced side effects and controlled release in different conditions, is suitable as a drug delivery system.
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Smith AA, Moore KBE, Ambs PM, Saraswati AP, Fortin JS. Recent Advances in the Discovery of Therapeutics to Curtail Islet Amyloid Polypeptide Aggregation for Type 2 Diabetes Treatment. Adv Biol (Weinh) 2022; 6:e2101301. [PMID: 35931462 DOI: 10.1002/adbi.202101301] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 07/04/2022] [Indexed: 01/28/2023]
Abstract
In humans with type 2 diabetes, at least 70% of patients exhibit islet amyloid plaques formed by misfolding islet amyloid polypeptides (IAPP). The oligomeric conformation and accumulation of the IAPP plaques lead to a panoply of cytotoxic effects on the islet β-cells. Currently, no marketed therapies for the prevention or elimination of these amyloid deposits exist, and therefore significant efforts are required to address this gap. To date, most of the experimental treatments are limited to only in vitro stages of testing. In general, the proposed therapeutics use various targeting strategies, such as binding to the N-terminal region of islet amyloid polypeptide on residues 1-19 or the hydrophobic region of IAPP. Other strategies include targeting the peptide self-assembly through π-stacking. These methods are realized by using several different families of compounds, four of which are highlighted in this review: naturally occurring products, small molecules, organometallic compounds, and nanoparticles. Each of these categories holds immense potential to optimize and develop inhibitor(s) of pancreatic amyloidosis in the near future.
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Affiliation(s)
- Alyssa A Smith
- Basic Medical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN, 47907, USA
| | - Kendall B E Moore
- Basic Medical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN, 47907, USA
| | | | - Akella Prasanth Saraswati
- Basic Medical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN, 47907, USA
| | - Jessica S Fortin
- Basic Medical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN, 47907, USA
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Gassen R, Thompkins D, Routt A, Jones P, Smith M, Thompson W, Couture P, Bozhko DA, Celinski Z, Camley RE, Hagen GM, Spendier K. Optical Imaging of Magnetic Particle Cluster Oscillation and Rotation in Glycerol. J Imaging 2021; 7:jimaging7050082. [PMID: 34460678 PMCID: PMC8321340 DOI: 10.3390/jimaging7050082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/16/2021] [Accepted: 04/25/2021] [Indexed: 11/16/2022] Open
Abstract
Magnetic particles have been evaluated for their biomedical applications as a drug delivery system to treat asthma and other lung diseases. In this study, ferromagnetic barium hexaferrite (BaFe12O19) and iron oxide (Fe3O4) particles were suspended in water or glycerol, as glycerol can be 1000 times more viscous than water. The particle concentration was 2.50 mg/mL for BaFe12O19 particle clusters and 1.00 mg/mL for Fe3O4 particle clusters. The magnetic particle cluster cross-sectional area ranged from 15 to 1000 μμm2, and the particle cluster diameter ranged from 5 to 45 μμm. The magnetic particle clusters were exposed to oscillating or rotating magnetic fields and imaged with an optical microscope. The oscillation frequency of the applied magnetic fields, which was created by homemade wire spools inserted into an optical microscope, ranged from 10 to 180 Hz. The magnetic field magnitudes varied from 0.25 to 9 mT. The minimum magnetic field required for particle cluster rotation or oscillation in glycerol was experimentally measured at different frequencies. The results are in qualitative agreement with a simplified model for single-domain magnetic particles, with an average deviation from the model of 1.7 ± 1.3. The observed difference may be accounted for by the fact that our simplified model does not include effects on particle cluster motion caused by randomly oriented domains in multi-domain magnetic particle clusters, irregular particle cluster size, or magnetic anisotropy, among other effects.
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Affiliation(s)
- River Gassen
- BioFrontiers Center, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (R.G.); (D.T.); (A.R.); (P.J.); (M.S.); (W.T.); (Z.C.); (R.E.C.); (G.M.H.)
- Department of Physics and Energy Science, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (P.C.); (D.A.B.)
| | - Dennis Thompkins
- BioFrontiers Center, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (R.G.); (D.T.); (A.R.); (P.J.); (M.S.); (W.T.); (Z.C.); (R.E.C.); (G.M.H.)
- Department of Physics and Energy Science, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (P.C.); (D.A.B.)
| | - Austin Routt
- BioFrontiers Center, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (R.G.); (D.T.); (A.R.); (P.J.); (M.S.); (W.T.); (Z.C.); (R.E.C.); (G.M.H.)
- Department of Physics and Energy Science, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (P.C.); (D.A.B.)
| | - Philippe Jones
- BioFrontiers Center, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (R.G.); (D.T.); (A.R.); (P.J.); (M.S.); (W.T.); (Z.C.); (R.E.C.); (G.M.H.)
- Department of Physics and Energy Science, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (P.C.); (D.A.B.)
| | - Meghan Smith
- BioFrontiers Center, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (R.G.); (D.T.); (A.R.); (P.J.); (M.S.); (W.T.); (Z.C.); (R.E.C.); (G.M.H.)
| | - William Thompson
- BioFrontiers Center, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (R.G.); (D.T.); (A.R.); (P.J.); (M.S.); (W.T.); (Z.C.); (R.E.C.); (G.M.H.)
| | - Paul Couture
- Department of Physics and Energy Science, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (P.C.); (D.A.B.)
| | - Dmytro A. Bozhko
- Department of Physics and Energy Science, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (P.C.); (D.A.B.)
| | - Zbigniew Celinski
- BioFrontiers Center, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (R.G.); (D.T.); (A.R.); (P.J.); (M.S.); (W.T.); (Z.C.); (R.E.C.); (G.M.H.)
- Department of Physics and Energy Science, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (P.C.); (D.A.B.)
| | - Robert E. Camley
- BioFrontiers Center, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (R.G.); (D.T.); (A.R.); (P.J.); (M.S.); (W.T.); (Z.C.); (R.E.C.); (G.M.H.)
- Department of Physics and Energy Science, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (P.C.); (D.A.B.)
| | - Guy M. Hagen
- BioFrontiers Center, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (R.G.); (D.T.); (A.R.); (P.J.); (M.S.); (W.T.); (Z.C.); (R.E.C.); (G.M.H.)
| | - Kathrin Spendier
- BioFrontiers Center, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (R.G.); (D.T.); (A.R.); (P.J.); (M.S.); (W.T.); (Z.C.); (R.E.C.); (G.M.H.)
- Department of Physics and Energy Science, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA; (P.C.); (D.A.B.)
- Correspondence:
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Chen J, Wang Y. Personalized dynamic transport of magnetic nanorobots inside the brain vasculature. NANOTECHNOLOGY 2020; 31:495706. [PMID: 33016261 DOI: 10.1088/1361-6528/abb392] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Delivering specific bioactive agents with sufficient bioavailability to the targeted brain area across blood brain barrier remains a big challenge. Magnetically driven nanorobots have demonstrated their potential for controlled drug delivery. However, the dynamic transport of these nanorobots inside each individual's brain vasculature is not yet well studied. Addressing this is a critical step forward to controlled drug delivery for non-invasive brain therapeutics. In this paper, we develop an analytical model describing the personalized dynamic transport of spherical magnetic nanorobots inside the brain vasculature reconstructed from the patient's angiography images. By inverting the transporting process, we first design the patient-specific transport path based on the reconstructed vascular model, and then calculate the magnetic force required to drive these nanorobots from the analytical model. Also, a finite element model is created to simulate the inverse design process, which implies that the delivery efficiency of these magnetically driven nanorobots to the targeted brain area can be increased by 20% and almost 95% nanorobots arrive at the desired vessel walls. In the end, a simplified brain vascular model is printed using PolyJet 3D 750 to demonstrate the dynamic transport of these nanorobots toward the targeted site. The proposed theoretical modeling, numerical simulation and experimental validation lay solid foundation toward non-invasive brain therapeutics with maximal accuracy and minimal side effects.
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Affiliation(s)
- Jingfan Chen
- J. Mike Walker' 66 Department of Mechanical Engineering, Texas A&M University, College Station, United States of America
| | - Ya Wang
- J. Mike Walker' 66 Department of Mechanical Engineering, Texas A&M University, College Station, United States of America
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Liu YL, Chen D, Shang P, Yin DC. A review of magnet systems for targeted drug delivery. J Control Release 2019; 302:90-104. [PMID: 30946854 DOI: 10.1016/j.jconrel.2019.03.031] [Citation(s) in RCA: 119] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 03/28/2019] [Accepted: 03/29/2019] [Indexed: 11/18/2022]
Abstract
Magnetic drug targeting is a method by which magnetic drug carriers in the body are manipulated by external magnetic fields to reach the target area. This method is potentially promising in applications for treatment of diseases like cancers, nervous system diseases, sudden sensorineural hearing loss, and so on, due to the advantages in that it can improve efficacy, reduce drug dosage and side effects. Therefore, it has received extensive attention in recent years. Successful magnetic drug targeting requires a good magnet system to guide the drug carriers to the target site. Up to date there have been many efforts to design the magnet systems for targeted drug delivery. However, there are few comprehensive reviews on these systems. Here we review the progresses made in this field. We summarized the systems already developed or proposed, and categorized them into two groups: static field magnet systems and varying field magnet systems. Based on the requirements for more powerful targeting performance, the prospects and the future research directions in this field are anticipated.
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Affiliation(s)
- Ya-Li Liu
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China; Shenzhen Research Institute of Northwestern Polytechnical University, Shenzhen 518057, Guangzhou, PR China
| | - Da Chen
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Peng Shang
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China; Shenzhen Research Institute of Northwestern Polytechnical University, Shenzhen 518057, Guangzhou, PR China
| | - Da-Chuan Yin
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China; Shenzhen Research Institute of Northwestern Polytechnical University, Shenzhen 518057, Guangzhou, PR China.
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9
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High gradient magnetic separation with involved Basset history force: Configuration with single axial wire. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.02.044] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Marofi F, Vahedi G, hasanzadeh A, Salarinasab S, Arzhanga P, Khademi B, Farshdousti Hagh M. Mesenchymal stem cells as the game‐changing tools in the treatment of various organs disorders: Mirage or reality? J Cell Physiol 2018; 234:1268-1288. [DOI: 10.1002/jcp.27152] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 07/05/2018] [Indexed: 12/11/2022]
Affiliation(s)
- Faroogh Marofi
- Department of Hematology Faculty of Medicine, Tabriz University of Medical Sciences Tabriz Iran
| | - Ghasem Vahedi
- Faculty of Veterinary Medicine, University of Tehran Tehran Iran
| | - Ali hasanzadeh
- Department of Hematology Faculty of Medicine, Tabriz University of Medical Sciences Tabriz Iran
| | - Sadegh Salarinasab
- Department of Biochemistry and Clinical Laboratories Faculty of Medicine, Tabriz University of Medical Science Tabriz Iran
| | - Pishva Arzhanga
- Department of Biochemistry and Diet Therapy Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences Tabriz Iran
| | - Bahareh Khademi
- Department of Medical Genetic Faculty of Medicine, Tabriz University of Medical Sciences Tabriz Iran
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11
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Al-Jamal KT, Bai J, Wang JTW, Protti A, Southern P, Bogart L, Heidari H, Li X, Cakebread A, Asker D, Al-Jamal WT, Shah A, Bals S, Sosabowski J, Pankhurst QA. Magnetic Drug Targeting: Preclinical in Vivo Studies, Mathematical Modeling, and Extrapolation to Humans. NANO LETTERS 2016; 16:5652-60. [PMID: 27541372 DOI: 10.1021/acs.nanolett.6b02261] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A sound theoretical rationale for the design of a magnetic nanocarrier capable of magnetic capture in vivo after intravenous administration could help elucidate the parameters necessary for in vivo magnetic tumor targeting. In this work, we utilized our long-circulating polymeric magnetic nanocarriers, encapsulating increasing amounts of superparamagnetic iron oxide nanoparticles (SPIONs) in a biocompatible oil carrier, to study the effects of SPION loading and of applied magnetic field strength on magnetic tumor targeting in CT26 tumor-bearing mice. Under controlled conditions, the in vivo magnetic targeting was quantified and found to be directly proportional to SPION loading and magnetic field strength. Highest SPION loading, however, resulted in a reduced blood circulation time and a plateauing of the magnetic targeting. Mathematical modeling was undertaken to compute the in vivo magnetic, viscoelastic, convective, and diffusive forces acting on the nanocapsules (NCs) in accordance with the Nacev-Shapiro construct, and this was then used to extrapolate to the expected behavior in humans. The model predicted that in the latter case, the NCs and magnetic forces applied here would have been sufficient to achieve successful targeting in humans. Lastly, an in vivo murine tumor growth delay study was performed using docetaxel (DTX)-encapsulated NCs. Magnetic targeting was found to offer enhanced therapeutic efficacy and improve mice survival compared to passive targeting at drug doses of ca. 5-8 mg of DTX/kg. This is, to our knowledge, the first study that truly bridges the gap between preclinical experiments and clinical translation in the field of magnetic drug targeting.
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Affiliation(s)
| | | | | | - Andrea Protti
- Cardiovascular Division, James Black Centre, King's College London British Heart Foundation Centre of Excellence , London, SE5 9NU, U.K
| | - Paul Southern
- Healthcare Biomagnetics Laboratory, University College London , 21 Albemarle Street, London W1S 4BS, U.K
| | - Lara Bogart
- Healthcare Biomagnetics Laboratory, University College London , 21 Albemarle Street, London W1S 4BS, U.K
| | - Hamed Heidari
- Electron Microscopy for Materials Research (EMAT), University of Antwerp , Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | | | | | | | - Wafa T Al-Jamal
- Dr. W.T. Al-Jamal, School of Pharmacy, University of East Anglia , Norwich Research Park, Norwich NR4 7TJ, U.K
| | - Ajay Shah
- Cardiovascular Division, James Black Centre, King's College London British Heart Foundation Centre of Excellence , London, SE5 9NU, U.K
| | - Sara Bals
- Electron Microscopy for Materials Research (EMAT), University of Antwerp , Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | | | - Quentin A Pankhurst
- Healthcare Biomagnetics Laboratory, University College London , 21 Albemarle Street, London W1S 4BS, U.K
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12
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Rath D, Tiedemann D, Gamrad L, Johnson LA, Klein S, Kues W, Mancini R, Rehbock C, Taylor U, Barcikowski S. Sex-Sorted Boar Sperm - An Update on Related Production Methods. Reprod Domest Anim 2016; 50 Suppl 2:56-60. [PMID: 26174920 DOI: 10.1111/rda.12572] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 05/20/2015] [Indexed: 01/13/2023]
Abstract
As in other mammals, sex sorting of pig sperm is based on quantitative flow cytometry. A major disadvantage of the technique is the relatively low efficiency to produce enough sorted sperm for artificial insemination. However, several approaches are on the way to make sexed pig sperm available for commercial application. In this context, for example, the growing field of nanotechnology may significantly contribute to these developments, as it provides highly efficient bio-nanoprobes, for example, based on plasmonic nanoparticles. Independent of the method, further development requires enormous investments and set-up of logistics to get the technology into the practical pig market. Only global players will be able to establish the necessary research projects, but in the end, a significant shift of sex ratios will be available for pig producers as it is already the case for the dairy industry.
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Affiliation(s)
- D Rath
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Neustadt-Mariensee, Germany
| | - D Tiedemann
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Neustadt-Mariensee, Germany
| | - L Gamrad
- Institute for Technical Chemistry I UDE, Essen, Germany.,CENIDE, Essen, Germany
| | | | - S Klein
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Neustadt-Mariensee, Germany
| | - W Kues
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Neustadt-Mariensee, Germany
| | - R Mancini
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Neustadt-Mariensee, Germany
| | - C Rehbock
- Institute for Technical Chemistry I UDE, Essen, Germany.,CENIDE, Essen, Germany
| | - U Taylor
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Neustadt-Mariensee, Germany
| | - S Barcikowski
- Institute for Technical Chemistry I UDE, Essen, Germany.,CENIDE, Essen, Germany
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Lee N, Yoo D, Ling D, Cho MH, Hyeon T, Cheon J. Iron Oxide Based Nanoparticles for Multimodal Imaging and Magnetoresponsive Therapy. Chem Rev 2015; 115:10637-89. [PMID: 26250431 DOI: 10.1021/acs.chemrev.5b00112] [Citation(s) in RCA: 588] [Impact Index Per Article: 65.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Nohyun Lee
- School of Advanced Materials Engineering, Kookmin University , Seoul 136-702, Korea
| | - Dongwon Yoo
- Department of Chemistry, Yonsei University , Seoul 120-749, Korea
| | - Daishun Ling
- Center for Nanoparticle Research, Institute for Basic Science (IBS) , Seoul 151-742, Korea.,School of Chemical and Biological Engineering, Seoul National University , Seoul 151-742, Korea.,Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University , Hangzhou 310058, PR China
| | - Mi Hyeon Cho
- Department of Chemistry, Yonsei University , Seoul 120-749, Korea
| | - Taeghwan Hyeon
- Center for Nanoparticle Research, Institute for Basic Science (IBS) , Seoul 151-742, Korea.,School of Chemical and Biological Engineering, Seoul National University , Seoul 151-742, Korea
| | - Jinwoo Cheon
- Department of Chemistry, Yonsei University , Seoul 120-749, Korea
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Kleinstreuer C, Feng Y, Childress E. Drug-targeting methodologies with applications: A review. World J Clin Cases 2014; 2:742-756. [PMID: 25516850 PMCID: PMC4266823 DOI: 10.12998/wjcc.v2.i12.742] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 08/23/2014] [Accepted: 10/16/2014] [Indexed: 02/05/2023] Open
Abstract
Targeted drug delivery to solid tumors is a very active research area, focusing mainly on improved drug formulation and associated best delivery methods/devices. Drug-targeting has the potential to greatly improve drug-delivery efficacy, reduce side effects, and lower the treatment costs. However, the vast majority of drug-targeting studies assume that the drug-particles are already at the target site or at least in its direct vicinity. In this review, drug-delivery methodologies, drug types and drug-delivery devices are discussed with examples in two major application areas: (1) inhaled drug-aerosol delivery into human lung-airways; and (2) intravascular drug-delivery for solid tumor targeting. The major problem addressed is how to deliver efficiently the drug-particles from the entry/infusion point to the target site. So far, most experimental results are based on animal studies. Concerning pulmonary drug delivery, the focus is on the pros and cons of three inhaler types, i.e., pressurized metered dose inhaler, dry powder inhaler and nebulizer, in addition to drug-aerosol formulations. Computational fluid-particle dynamics techniques and the underlying methodology for a smart inhaler system are discussed as well. Concerning intravascular drug-delivery for solid tumor targeting, passive and active targeting are reviewed as well as direct drug-targeting, using optimal delivery of radioactive microspheres to liver tumors as an example. The review concludes with suggestions for future work, considereing both pulmonary drug targeting and direct drug delivery to solid tumors in the vascular system.
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15
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Conceptual design of integrated microfluidic system for magnetic cell separation, electroporation, and transfection. Phys Med 2013; 29:562-7. [DOI: 10.1016/j.ejmp.2012.11.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 11/19/2012] [Accepted: 11/24/2012] [Indexed: 11/24/2022] Open
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Samoilova N, Tikhonov V, Krayukhina M, Yamskov I. Interpolyelectrolyte complexes of maleic acid copolymers and chitosan for stabilization and functionalization of magnetite nano- and microparticles. J Appl Polym Sci 2013. [DOI: 10.1002/app.39663] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Nadezhda Samoilova
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 119991 Moscow Russia
| | - Vladimir Tikhonov
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 119991 Moscow Russia
| | - Maria Krayukhina
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 119991 Moscow Russia
| | - Igor Yamskov
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 119991 Moscow Russia
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Remote manipulation of posterior lamellar corneal grafts using a magnetic field. Cornea 2013; 32:851-4. [PMID: 23538632 DOI: 10.1097/ico.0b013e31828989a1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE In posterior lamellar keratoplasty procedures such as Descemet stripping endothelial keratoplasty and Descemet membrane endothelial keratoplasty, the lamellar graft is manipulated directly or by injecting an air bubble. This preliminary study sought to evaluate the feasibility of guiding lamellar corneal grafts by generating a magnetic field. METHODS Rabbit and porcine Descemet stripping endothelial keratoplasty and Descemet membrane endothelial keratoplasty grafts were manually produced and immersed in a ferromagnetic solution containing nanomagnetic particles conjugated to streptavidin or in gadoteric acid. For the feasibility study, grafts were transferred to an artificial anterior chamber or plastic test tube and a magnetic field was generated with a handheld NdFeB disc magnet. The presence and the sustainability of graft motion were documented under various conditions. For the semiquantitative study, whole or partial grafts were transferred to a plastic test tube after immersion, and the amount of tissue retraction induced by the remote magnet was graded. RESULTS The grafts were successfully manipulated in all directions by the magnet, from a distance of up to 7 mm. They remained ferromagnetic more than 24 hours after immersion in the ferromagnetic solutions. The degree of retraction was affected by graft size, immersion time, time from immersion, and immersion solution. CONCLUSIONS Posterior lamellar corneal grafts may be made ferromagnetic and remotely manipulated by creation of a magnetic field. The ferromagnetic properties are adjustable. This technique holds promise in attaching and repositioning grafts during keratoplasty. Further research is needed to assess the possible effects of ferromagnetic solutions on corneal endothelial cells and on lamellar graft clarity.
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Wadajkar AS, Menon JU, Kadapure T, Tran RT, Yang J, Nguyen KT. Design and Application of Magnetic-based Theranostic Nanoparticle Systems. ACTA ACUST UNITED AC 2013; 6:47-57. [PMID: 23795343 DOI: 10.2174/1874764711306010007] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Recently, magnetic-based theranostic nanoparticle (MBTN) systems have been studied, researched, and applied extensively to detect and treat various diseases including cancer. Theranostic nanoparticles are advantageous in that the diagnosis and treatment of a disease can be performed in a single setting using combinational strategies of targeting, imaging, and/or therapy. Of these theranostic strategies, magnetic-based systems containing magnetic nanoparticles (MNPs) have gained popularity because of their unique ability to be used in magnetic resonance imaging, magnetic targeting, hyperthermia, and controlled drug release. To increase their effectiveness, MNPs have been decorated with a wide variety of materials to improve their biocompatibility, carry therapeutic payloads, encapsulate/bind imaging agents, and provide functional groups for conjugation of biomolecules that provide receptor-mediated targeting of the disease. This review summarizes recent patents involving various polymer coatings, imaging agents, therapeutic agents, targeting mechanisms, and applications along with the major requirements and challenges faced in using MBTN for disease management.
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Affiliation(s)
- Aniket S Wadajkar
- Department of Bioengineering, The University of Texas at Arlington, Arlington, TX 76019 ; Joint Biomedical Engineering Program between The University of Texas at Arlington and The University of Texas Southwestern Medical Center, Dallas, TX 75390
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Carneiro MLB, Peixoto RCA, Joanitti GA, Oliveira RGS, Telles LAM, Miranda-Vilela AL, Bocca AL, Vianna LMS, da Silva ICR, de Souza AR, Lacava ZGM, Báo SN. Antitumor effect and toxicity of free rhodium (II) citrate and rhodium (II) citrate-loaded maghemite nanoparticles in mice bearing breast cancer. J Nanobiotechnology 2013; 11:4. [PMID: 23414068 PMCID: PMC3598481 DOI: 10.1186/1477-3155-11-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Accepted: 01/30/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Magnetic fluids containing superparamagnetic iron oxide nanoparticles represent an attractive platform as nanocarriers in chemotherapy. Recently, we developed a formulation of maghemite nanoparticles coated with rhodium (II) citrate, which resulted in in vitro cytotoxicity enhanced up to 4.6 times when compared to free rhodium (II) citrate formulation on breast carcinoma cells. In this work, we evaluate the antitumor activity and toxicity induced by these formulations in Balb/c mice bearing orthotopic 4T1 breast carcinoma. METHODS Mice were evaluated with regard to the treatments' toxicity through analyses of hemogram, serum levels of alanine aminotransferase, iron, and creatinine; DNA fragmentation and cell cycle of bone marrow cells; and liver, kidney and lung histology. In addition, the antitumor activity of rhodium (II) citrate and maghemite nanoparticles coated with rhodium (II) citrate was verified by tumor volume reduction, histology and immunohistochemistry. RESULTS Regarding the treatments' toxicity, no experimental groups had alterations in levels of serum ALT or creatinine, and this suggestion was corroborated by the histopathologic examination of liver and kidney of mice. Moreover, DNA fragmentation frequency of bone marrow cells was lower than 15% in all experimental groups. On the other hand, the complexes rhodium (II) citrate-functionalized maghemite and free rhodium (II) citrate led to a marked growth inhibition of tumor and decrease in CD31 and Ki-67 staining. CONCLUSIONS In summary, we demonstrated that both rhodium (II) citrate and maghemite nanoparticles coated with rhodium (II) citrate formulations exhibited antitumor effects against 4T1 metastatic breast cancer cell line following intratumoral administration. This antitumor effect was followed by inhibition of both cell proliferation and microvascularization and by tumor tissue injury characterized as necrosis and fibrosis. Remarkably, this is the first published report demonstrating the therapeutic efficacy of maghemite nanoparticles coated with rhodium (II) citrate. This treatment prolonged the survival period of treated mice without inducing apparent systemic toxicity, which strengthens its use for future breast cancer therapeutic applications.
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Affiliation(s)
- Marcella Lemos Brettas Carneiro
- Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília (UnB), 70.910-900, Brasília-DF, Brazil
| | - Raphael CA Peixoto
- Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília (UnB), 70.910-900, Brasília-DF, Brazil
| | - Graziela A Joanitti
- Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília (UnB), 70.910-900, Brasília-DF, Brazil
| | - Ricardo GS Oliveira
- Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília (UnB), 70.910-900, Brasília-DF, Brazil
| | - Luis AM Telles
- Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília (UnB), 70.910-900, Brasília-DF, Brazil
| | - Ana L Miranda-Vilela
- Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília (UnB), 70.910-900, Brasília-DF, Brazil
| | - Anamélia L Bocca
- Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília (UnB), 70.910-900, Brasília-DF, Brazil
| | - Leonora MS Vianna
- Departamento de Patologia, Faculdade de Medicina, Universidade de Brasília, 70.919-970, Brasília-DF, Brazil
| | | | - Aparecido R de Souza
- Instituto de Química, Universidade Federal de Goiás, Campus Samambaia, 74.001-970, Goiânia, Brazil
| | - Zulmira GM Lacava
- Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília (UnB), 70.910-900, Brasília-DF, Brazil
| | - Sônia N Báo
- Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília (UnB), 70.910-900, Brasília-DF, Brazil
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Branham ML, Moyo T, Abdallah HMI, Masina P. Tetracycline-ferrite nanocomposites formed via high-energy ball milling and the influence of milling conditions. Eur J Pharm Biopharm 2012; 83:184-92. [PMID: 23085583 DOI: 10.1016/j.ejpb.2012.09.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Revised: 09/20/2012] [Accepted: 09/24/2012] [Indexed: 11/26/2022]
Abstract
High-energy ball milling was used to mediate the formation of nanocomposites containing tetracycline and magnetic nanoparticles. Tetracycline-HCl was ball milled for 1, 3, 5, 15, and 30 h under argon or air atmosphere with preformed Mg 0.5 Zn 0.5 Fe2O4 nanoferrites prepared by glycolthermal method. The structural, thermal, and magnetic properties of these novel materials and the effect of milling atmosphere on composition, crystallinity and cation distribution were then characterized by ICP-OES, DSC/TGA, XRPD, ATR-IR, UV-Vis and Mössbauer spectroscopy. Tetracycline underwent rapid and consecutive metal coordination events in the milling process to yield complexes characterized by bathochromic shifts in its electronic spectra and suppression of electronic absorbance at 365 nm. Changes in stretching vibrations due to the A-ring carbonyl (1616 cm(-1)), amide II nitrogen (1602 cm(-1)), and CO bond (1039 cm(-1)) indicate Mg-type interactions imposed on the metals. Exothermic oxidation of the drug at 235°C disappeared after 5h milling with the nanoferrites, and the composites formed remained thermostable up to 500°C. Tetracycline-nanoferrites (Tet-NF) are magnetic-ordered materials with a well-defined spinel-type structure. Analysis of the Mössbauer data suggests that the milling time and atmosphere have significant influence on cation distributions in Tet-NF composites.
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Affiliation(s)
- Michael Lee Branham
- School of Pharmacy and Pharmacology, University of KwaZulu-Natal, Durban, South Africa
| | - Thomas Moyo
- School of Chemistry and Physics, University of KwaZulu-Natal, Durban, South Africa.
| | - Hafiz M I Abdallah
- School of Chemistry and Physics, University of KwaZulu-Natal, Durban, South Africa
| | - Patrick Masina
- School of Chemistry and Physics, University of KwaZulu-Natal, Durban, South Africa
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Xanthos T, Chatzigeorgiou M, Johnson EO, Chalkias A. Magnetically targeted drug delivery during cardiopulmonary resuscitation and the post-resuscitation period. Resuscitation 2012; 83:803-5. [PMID: 22289681 DOI: 10.1016/j.resuscitation.2012.01.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 12/22/2011] [Accepted: 01/08/2012] [Indexed: 12/27/2022]
Abstract
Treatment with pharmacological agents is frequently required during cardiopulmonary resuscitation efforts and almost always during the post-resuscitation period. However, the lack of scientific evidence, the potent side effects and the association of resuscitation drugs with poor outcome act as a disincentive for their use. The use of magnetic nanoparticles in medicine has great potential. Magnetically targeted drug delivery may be an ideal method of pharmaceutical treatment during the resuscitation efforts and post-resuscitation period. In addition, there is evidence that magnetic nanotechnology may be used in the detection of post-cardiac arrest brain injury. In the light of poor survival of cardiac arrest victims, research in cardiopulmonary resuscitation should focus on this promising technology as soon as possible.
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Affiliation(s)
- Theodoros Xanthos
- National and Kapodistrian University of Athens, Medical School, Department of Anatomy, Athens, Greece
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Kim JE, Shin JY, Cho MH. Magnetic nanoparticles: an update of application for drug delivery and possible toxic effects. Arch Toxicol 2011; 86:685-700. [PMID: 22076106 DOI: 10.1007/s00204-011-0773-3] [Citation(s) in RCA: 134] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Accepted: 10/24/2011] [Indexed: 01/18/2023]
Abstract
Magnetic nanoparticles (MNPs) represent a subclass within the overall category of nanomaterials and are widely used in many applications, particularly in the biomedical sciences such as targeted delivery of drugs or genes, in magnetic resonance imaging, and in hyperthermia (treating tumors with heat). Although the potential benefits of MNPs are considerable, there is a distinct need to identify any potential toxicity associated with these MNPs. The potential of MNPs in drug delivery stems from the intrinsic properties of the magnetic core combined with their drug loading capability and the biomedical properties of MNPs generated by different surface coatings. These surface modifications alter the particokinetics and toxicity of MNPs by changing protein-MNP or cell-MNP interactions. This review contains current advances in MNPs for drug delivery and their possible organ toxicities associated with disturbance in body iron homeostasis. The importance of protein-MNP interactions and various safety considerations relating to MNP exposure are also addressed.
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Affiliation(s)
- Ji-Eun Kim
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Seoul 151-742, Korea
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Robert D, Pamme N, Conjeaud H, Gazeau F, Iles A, Wilhelm C. Cell sorting by endocytotic capacity in a microfluidic magnetophoresis device. LAB ON A CHIP 2011; 11:1902-10. [PMID: 21512692 DOI: 10.1039/c0lc00656d] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Magnetically labelled cells are finding a wealth of applications for in vitro analysis as well as in vivo treatments. Sorting of cells into subpopulations based on their magnetite loading is an important step in such procedures. Here, we study the sorting of monocytes and macrophages which internalise nanoparticles to different extents based on their endocytotic capacity. Macrophages featured a high endocytotic activity and were found to internalise between 4 and 60 pg of iron per cell. They were successfully sorted into five subpopulations of narrow iron loading distributions via on-chip free-flow magnetophoresis, thus demonstrating the potential of sorting of relatively similarly loaded cells. Monocytes featured a low endocytotic capacity and took on 1 to 4 pg of iron per cell. Mixtures of monocytes and macrophages were successfully sorted within the free-flow magnetophoresis chip and good purity (>88%), efficacy (>60%) and throughput (from 10 to 100 cells s(-1)) could be achieved. The introduced method constitutes a viable tool for studies of endocytotic capacity and sorting/selection of cells based on this functionality.
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Affiliation(s)
- Damien Robert
- Laboratoire Matière et Systèmes Complexes, UMR CNRS et Université Paris Diderot, France
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Magnetic nanoparticles as targeted delivery systems in oncology. Radiol Oncol 2011; 45:1-16. [PMID: 22933928 PMCID: PMC3423716 DOI: 10.2478/v10019-011-0001-z] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2010] [Accepted: 01/05/2011] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Many different types of nanoparticles, magnetic nanoparticles being just a category among them, offer exciting opportunities for technologies at the interfaces between chemistry, physics and biology. Some magnetic nanoparticles have already been utilized in clinical practice as contrast enhancing agents for magnetic resonance imaging (MRI). However, their physicochemical properties are constantly being improved upon also for other biological applications, such as magnetically-guided delivery systems for different therapeutics. By exposure of magnetic nanoparticles with attached therapeutics to an external magnetic field with appropriate characteristics, they are concentrated and retained at the preferred site which enables the targeted delivery of therapeutics to the desired spot. CONCLUSIONS The idea of binding chemotherapeutics to magnetic nanoparticles has been around for 30 years, however, no magnetic nanoparticles as delivery systems have yet been approved for clinical practice. Recently, binding of nucleic acids to magnetic nanoparticles has been demonstrated as a successful non-viral transfection method of different cell lines in vitro. With the optimization of this method called magnetofection, it will hopefully become another form of gene delivery for the treatment of cancer.
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Mesenchymal stem cells: a promising targeted-delivery vehicle in cancer gene therapy. J Control Release 2010; 147:154-62. [PMID: 20493219 DOI: 10.1016/j.jconrel.2010.05.015] [Citation(s) in RCA: 131] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Accepted: 05/12/2010] [Indexed: 01/12/2023]
Abstract
The targeting drug delivery systems (TDDS) have attracted extensive attention of researchers in recent years. More and more drug/gene targeted delivery carriers, such as liposome, magnetic nanoparticles, ligand-conjugated nanoparticles, microbubbles, etc., have been developed and under investigation for their application. However, the currently investigated drug/gene carriers have several disadvantages, which limit their future use in clinical practice. Therefore, design and development of novel drug/gene delivery vehicles has been a hot area of research. Recent studies have shown the ability of mesenchymal stem cells (MSCs) to migrate towards and engraft into the tumor sites, which make them a great hope for efficient targeted-delivery vehicles in cancer gene therapy. In this review article, we examine the promising of using mesenchymal stem cells as a targeted-delivery vehicle for cancer gene therapy, and summarize various challenges and concerns regarding these therapies.
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Wong KKY, Liu X. Silver nanoparticles—the real “silver bullet” in clinical medicine? MEDCHEMCOMM 2010. [DOI: 10.1039/c0md00069h] [Citation(s) in RCA: 236] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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