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Seo Y, Ghazanfari L, Master A, Vishwasrao HM, Wan X, Sokolsky-Papkov M, Kabanov AV. Poly(2-oxazoline)-magnetite NanoFerrogels: Magnetic field responsive theranostic platform for cancer drug delivery and imaging. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2022; 39:102459. [PMID: 34530163 PMCID: PMC8665074 DOI: 10.1016/j.nano.2021.102459] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 07/21/2021] [Accepted: 08/03/2021] [Indexed: 01/03/2023]
Abstract
Combining diagnosis and treatment approaches in one entity is the goal of theranostics for cancer therapy. Magnetic nanoparticles have been extensively used as contrast agents for nuclear magnetic resonance imaging as well as drug carriers and remote actuation agents. Poly(2-oxazoline)-based polymeric micelles, which have been shown to efficiently solubilize hydrophobic drugs and drug combinations, have high loading capacity (above 40% w/w) for paclitaxel. In this study, we report the development of novel theranostic system, NanoFerrogels, which is designed to capitalize on the magnetic nanoparticle properties as imaging agents and the poly(2-oxazoline)-based micelles as drug loading compartment. We developed six formulations with magnetic nanoparticle content of 0.3%-12% (w/w), with the z-average sizes of 85-130 nm and ξ-potential of 2.7-28.3 mV. The release profiles of paclitaxel from NanoFerrogels were notably dependent on the degree of dopamine grafting on poly(2-oxazoline)-based micelles. Paclitaxel loaded NanoFerrogels showed efficacy against three breast cancer lines which was comparable to free paclitaxel. They also showed improved tumor and lymph node accumulation and signal reduction in vivo (2.7% in tumor; 8.5% in lymph node) compared to clinically approved imaging agent ferumoxytol (FERAHEME®) 24 h after administration. NanoFerrogels responded to super-low frequency alternating current magnetic field (50 kA m-1, 50 Hz) which accelerated drug release from paclitaxel-loaded NanoFerrogels or caused death of cells loaded with NanoFerrogels. These proof-of-concept experiments demonstrate that NanoFerrogels have potential as remotely actuated theranostic platform for cancer diagnosis and treatment.
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Affiliation(s)
- Youngee Seo
- Center for Nanotechnology in Drug Delivery, Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Lida Ghazanfari
- Center for Nanotechnology in Drug Delivery, Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Alyssa Master
- Center for Nanotechnology in Drug Delivery, Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Hemant M Vishwasrao
- Center for Drug Delivery and Nanomedicine and Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, United States
| | - Xiaomeng Wan
- Center for Nanotechnology in Drug Delivery, Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Marina Sokolsky-Papkov
- Center for Nanotechnology in Drug Delivery, Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.
| | - Alexander V Kabanov
- Center for Nanotechnology in Drug Delivery, Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Laboratory of Chemical Design of Bionanomaterials, Faculty of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russia.
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Fay JM, Kabanov AV. Interpolyelectrolyte Complexes as an Emerging Technology for Pharmaceutical Delivery of Polypeptides. REVIEWS AND ADVANCES IN CHEMISTRY 2022. [PMCID: PMC9987408 DOI: 10.1134/s2634827622600177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
Polyelectrolyte complexes and the derivatives thereof comprise some of the most promising vehicles for the encapsulation and delivery of macromolecular therapeutics. In particular, protein therapeutics, which present a host of special considerations, can often be effectively packaged and delivered using interpolyelectrolyte complexes. While the technologies are still in the developmental phase, there are numerous examples of complexes where control is exerted over spacial and temporal delivery of a model protein cargo or candidate protein therapeutic agent. Here we provide a historical and practical background to promote a deeper understanding of interpolyelectrolyte complexes and the derivative technologies. Additionally, we review the physical principles underlying the association of polyelectrolyte complexes and the application of those principles to novel strategies and technologies driving interpolyelectrolyte complexation. Then, the application of polyelectrolyte complex technology to protein therapeutics is discussed in detail including discussions of several types of protein cargo with a special emphasis on Brain-Derived Neurotrophic Factor. Finally, we focus on the use of stealth polymers in block ionomer complexes, specifically PEG; its benefits, flaws, and possible alternatives. Comprehensive understanding of the field may promote the continued development of derivative technologies for the delivery of particularly intransigent protein therapeutics, much as has been accomplished for small molecule drugs. We also aim to link current advances to the historical developments which inaugurated the field. With consideration to the field, industrial and academic researchers can utilize the discussed technologies and continue to elucidate novel modalities for a myriad of therapeutic and commercial applications.
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Affiliation(s)
- James M. Fay
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina, NC 27599-7362 Chapel Hill, USA ,Department of Biochemistry and Biophysics, School of Medicine, University of North Carolina, NC 27599-7260 Chapel Hill, USA
| | - Alexander V. Kabanov
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina, NC 27599-7362 Chapel Hill, USA ,Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina, NC 27599-7260 Chapel Hill, USA ,Faculty of Chemistry, Moscow State University, 119992 Moscow, Russia
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Vlasova KY, Vishwasrao H, Abakumov MA, Golovin DY, Gribanovsky SL, Zhigachev AO, Poloznikov AА, Majouga AG, Golovin YI, Sokolsky-Papkov M, Klyachko NL, Kabanov AV. Enzyme Release from Polyion Complex by Extremely Low Frequency Magnetic Field. Sci Rep 2020; 10:4745. [PMID: 32179787 PMCID: PMC7076007 DOI: 10.1038/s41598-020-61364-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 12/11/2019] [Indexed: 01/12/2023] Open
Abstract
Remote nano-magneto-mechanical actuation of magnetic nanoparticles (MNPs) by non-heating extremely low frequency magnetic field (ELF MF) is explored as a tool for non-invasive modification of bionanomaterials in pharmaceutical and medical applications. Here we study the effects of ELF MF (30-160 Hz, 8-120 kA/m) on the activity and release of a model enzyme, superoxide dismutase 1 (SOD1) immobilized by polyion coupling on dispersed MNPs aggregates coated with poly(L-lysine)-block-poly(ethylene glycol) block copolymer (s-MNPs). Such fields do not cause any considerable heating of MNPs but promote their rotating-oscillating mechanical motion that produces mechanical forces and deformations in adjacent materials. We observed the changes in the catalytic activity of immobilized SOD1 as well as its release from the s-MNPs/SOD1 polyion complex upon application of the ELF MF for 5 to 15 min. At longer exposures (25 min) the s-MNPs/SOD1 dispersion destabilizes. The bell-shaped effect of the field frequency with maximum at f = 50 Hz and saturation effect of field strength (between 30 kA/m and 120 kA/m at f = 50 Hz) are reported and explained. The findings are significant as one early indication of the nano-magneto-mechanical disruption by ELF MF of cooperative polyion complexes that are widely used for design of current functional healthcare bionanomaterials.
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Affiliation(s)
- Kseniya Yu Vlasova
- Laboratory for Chemical Design of Bionanomaterials, School of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Hemant Vishwasrao
- Center for Nanotechnology in Drug Delivery and Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Maxim A Abakumov
- National University of Science and Technology MISIS, Moscow, 119049, Russia
- Department of Medical Nanobiotechnology, Pirogov Russian National Research Medical University, Moscow, 117997, Russia
| | | | | | | | - Andrey А Poloznikov
- FSBI National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, Obninsk, 249036, Russia
| | - Alexander G Majouga
- Laboratory for Chemical Design of Bionanomaterials, School of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia
- National University of Science and Technology MISIS, Moscow, 119049, Russia
- D. Mendeleev University of Chemical Technology of Russia, Moscow, 125047, Russia
| | - Yuri I Golovin
- Laboratory for Chemical Design of Bionanomaterials, School of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia
- G.R. Derzhavin Tambov State University, Tambov, 392036, Russia
| | - Marina Sokolsky-Papkov
- Center for Nanotechnology in Drug Delivery and Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Natalia L Klyachko
- Laboratory for Chemical Design of Bionanomaterials, School of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia
- Center for Nanotechnology in Drug Delivery and Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
- G.R. Derzhavin Tambov State University, Tambov, 392036, Russia
| | - Alexander V Kabanov
- Laboratory for Chemical Design of Bionanomaterials, School of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia.
- Center for Nanotechnology in Drug Delivery and Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.
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Saxena V, Pandey LM. Bimetallic assembly of Fe(III) doped ZnO as an effective nanoantibiotic and its ROS independent antibacterial mechanism. J Trace Elem Med Biol 2020; 57:126416. [PMID: 31629630 DOI: 10.1016/j.jtemb.2019.126416] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 07/30/2019] [Accepted: 10/05/2019] [Indexed: 11/17/2022]
Affiliation(s)
- Varun Saxena
- Bio-Interface & Environmental Engineering Lab, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India.
| | - Lalit M Pandey
- Bio-Interface & Environmental Engineering Lab, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India.
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Vlasova KY, Piroyan A, Le-Deygen IM, Vishwasrao HM, Ramsey JD, Klyachko NL, Golovin YI, Rudakovskaya PG, Kireev II, Kabanov AV, Sokolsky-Papkov M. Magnetic liposome design for drug release systems responsive to super-low frequency alternating current magnetic field (AC MF). J Colloid Interface Sci 2019; 552:689-700. [PMID: 31176052 PMCID: PMC7012191 DOI: 10.1016/j.jcis.2019.05.071] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/30/2019] [Accepted: 05/22/2019] [Indexed: 02/02/2023]
Abstract
HYPOTHESIS Magnetic liposomes are shown to release the entrapped dye once modulated by low frequency AC MF. The mechanism and effectiveness of MF application should depend on lipid composition, magnetic nanoparticles (MNPs) properties, temperature and field parameters. EXPERIMENTS The study was performed using liposomes of various lipid composition and embedded hydrophobic MNPs. The liposomes structural changes were studied by the transmission electron microscopy (TEM) and attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy and the leakage was monitored by the fluorescent dye release. FINDINGS Magnetic liposomes exposure to the AC MF resulted in the clustering of the MNPs in the membranes and disruption of the lipid packaging. Addition of cholesterol diminished the dye release from the saturated lipid-based liposomes. Replacement of the saturated lipid for unsaturated one also decreased the dye release. The dye release depended on the strength, but not the frequency of the field. Thus, the oscillating motion of MNPs in AC MF ruptures the gel phase membranes of saturated lipids. As the temperature increases the disruption also increases. In the liquid crystalline membranes formed by unsaturated lipids the deformations and defects created by mechanical motion of the MNPs are more likely to heal and results in decreased release.
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Affiliation(s)
- Kseniya Yu Vlasova
- Laboratory of Chemical Design of Bionanomaterials, Faculty of Chemistry, Lomonosov Moscow State University, Moscow 119992, Russia
| | - Alexander Piroyan
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, USA
| | - Irina M Le-Deygen
- Laboratory of Chemical Design of Bionanomaterials, Faculty of Chemistry, Lomonosov Moscow State University, Moscow 119992, Russia
| | - Hemant M Vishwasrao
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, USA
| | - Jacob D Ramsey
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, USA.
| | - Natalia L Klyachko
- Laboratory of Chemical Design of Bionanomaterials, Faculty of Chemistry, Lomonosov Moscow State University, Moscow 119992, Russia; Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, USA; G.R. Derzhavin Tambov State University, Tambov 392000, Russia.
| | - Yuri I Golovin
- Laboratory of Chemical Design of Bionanomaterials, Faculty of Chemistry, Lomonosov Moscow State University, Moscow 119992, Russia; G.R. Derzhavin Tambov State University, Tambov 392000, Russia
| | - Polina G Rudakovskaya
- Laboratory of Chemical Design of Bionanomaterials, Faculty of Chemistry, Lomonosov Moscow State University, Moscow 119992, Russia
| | - Igor I Kireev
- A.N. Belozersky Institute of Physico-Chemical Biology, M.V. Lomonosov Moscow State University, Moscow 119992, Russia.
| | - Alexander V Kabanov
- Laboratory of Chemical Design of Bionanomaterials, Faculty of Chemistry, Lomonosov Moscow State University, Moscow 119992, Russia; Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, USA.
| | - Marina Sokolsky-Papkov
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, USA.
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Klahn P, Fetz V, Ritter A, Collisi W, Hinkelmann B, Arnold T, Tegge W, Rox K, Hüttel S, Mohr KI, Wink J, Stadler M, Wissing J, Jänsch L, Brönstrup M. The nuclear export inhibitor aminoratjadone is a potent effector in extracellular-targeted drug conjugates. Chem Sci 2019; 10:5197-5210. [PMID: 31191875 PMCID: PMC6540907 DOI: 10.1039/c8sc05542d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 04/15/2019] [Indexed: 12/04/2022] Open
Abstract
The concept of targeted drug conjugates has been successfully translated to clinical practice in oncology. Whereas the majority of cytotoxic effectors in drug conjugates are directed against either DNA or tubulin, our study aimed to validate nuclear export inhibition as a novel effector principle in drug conjugates. For this purpose, a semisynthetic route starting from the natural product ratjadone A, a potent nuclear export inhibitor, has been developed. The biological evaluation of ratjadones functionalized at the 16-position revealed that oxo- and amino-analogues had very high potencies against cancer cell lines (e.g. 16R-aminoratjadone 16 with IC50 = 260 pM against MCF-7 cells, or 19-oxoratjadone 14 with IC50 = 100 pM against A-549 cells). Mechanistically, the conjugates retained a nuclear export inhibitory activity through binding CRM1. To demonstrate a proof-of-principle for cellular targeting, folate- and luteinizing hormone releasing hormone (LHRH)-based carrier molecules were synthesized and coupled to aminoratjadones as well as fluorescein for cellular efficacy and imaging studies, respectively. The Trojan-Horse conjugates selectively addressed receptor-positive cell lines and were highly potent inhibitors of their proliferation. For example, the folate conjugate FA-7-Val-Cit-pABA-16R-aminoratjadone had an IC50 of 34.3 nM, and the LHRH conjugate d-Orn-Gose-Val-Cit-pABA-16R-aminoratjadone had an IC50 of 12.8 nM. The results demonstrate that nuclear export inhibition is a promising mode-of-action for extracellular-targeted drug conjugate payloads.
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Affiliation(s)
- Philipp Klahn
- Department of Chemical Biology , Helmholtz Centre for Infection Research , Inhoffenstrasse 7 , 38124 Braunschweig , Germany .
- Institute of Organic Chemistry , Technische Universität Braunschweig , Hagenring 30 , 38106 Braunschweig , Germany .
| | - Verena Fetz
- Department of Chemical Biology , Helmholtz Centre for Infection Research , Inhoffenstrasse 7 , 38124 Braunschweig , Germany .
| | - Antje Ritter
- Department of Chemical Biology , Helmholtz Centre for Infection Research , Inhoffenstrasse 7 , 38124 Braunschweig , Germany .
| | - Wera Collisi
- Department of Chemical Biology , Helmholtz Centre for Infection Research , Inhoffenstrasse 7 , 38124 Braunschweig , Germany .
- Department of Microbial Drugs , Helmholtz Centre for Infection Research , Inhoffenstrasse 7 , 38124 Braunschweig , Germany
| | - Bettina Hinkelmann
- Department of Chemical Biology , Helmholtz Centre for Infection Research , Inhoffenstrasse 7 , 38124 Braunschweig , Germany .
| | - Tatjana Arnold
- Department of Chemical Biology , Helmholtz Centre for Infection Research , Inhoffenstrasse 7 , 38124 Braunschweig , Germany .
| | - Werner Tegge
- Department of Chemical Biology , Helmholtz Centre for Infection Research , Inhoffenstrasse 7 , 38124 Braunschweig , Germany .
| | - Katharina Rox
- Department of Chemical Biology , Helmholtz Centre for Infection Research , Inhoffenstrasse 7 , 38124 Braunschweig , Germany .
- German Centre of Infection Research (DZIF) , Partner Site Hannover-Braunschweig , Germany
| | - Stephan Hüttel
- Department of Microbial Drugs , Helmholtz Centre for Infection Research , Inhoffenstrasse 7 , 38124 Braunschweig , Germany
| | - Kathrin I Mohr
- Department of Microbial Drugs , Helmholtz Centre for Infection Research , Inhoffenstrasse 7 , 38124 Braunschweig , Germany
| | - Joachim Wink
- Department of Microbial Drugs , Helmholtz Centre for Infection Research , Inhoffenstrasse 7 , 38124 Braunschweig , Germany
| | - Marc Stadler
- Department of Microbial Drugs , Helmholtz Centre for Infection Research , Inhoffenstrasse 7 , 38124 Braunschweig , Germany
| | - Josef Wissing
- Department of Structure and Function of Proteins , Research Group Cellular Proteomic , Helmholtz Centre for Infection Research , Inhoffenstrasse 7 , 38124 Braunschweig , Germany
| | - Lothar Jänsch
- Department of Structure and Function of Proteins , Research Group Cellular Proteomic , Helmholtz Centre for Infection Research , Inhoffenstrasse 7 , 38124 Braunschweig , Germany
| | - Mark Brönstrup
- Department of Chemical Biology , Helmholtz Centre for Infection Research , Inhoffenstrasse 7 , 38124 Braunschweig , Germany .
- Biomolecular Drug Research Center (BMWZ) , Schneiderberg 38 , 30167 Hannover , Germany
- German Centre of Infection Research (DZIF) , Partner Site Hannover-Braunschweig , Germany
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Loginova TP, Istratov VV, Shtykova EV, Vasnev VA, Matyushin AA, Shchetinin IV, Oleinichenko EA, Talanova VN. Magnetite Nanoparticles in Hybrid Micelles of Polylactide-block-polyethylene Oxide and Sodium Dodecyl Sulfate in Water. CRYSTALLOGR REP+ 2019. [DOI: 10.1134/s1063774518060226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Voulgari E, Bakandritsos A, Galtsidis S, Zoumpourlis V, Burke BP, Clemente GS, Cawthorne C, Archibald SJ, Tuček J, Zbořil R, Kantarelou V, Karydas AG, Avgoustakis K. Synthesis, characterization and in vivo evaluation of a magnetic cisplatin delivery nanosystem based on PMAA-graft-PEG copolymers. J Control Release 2016; 243:342-356. [PMID: 27793687 DOI: 10.1016/j.jconrel.2016.10.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 10/15/2016] [Accepted: 10/23/2016] [Indexed: 12/11/2022]
Abstract
The development of anticancer drug delivery systems which retain or enhance the cytotoxic properties of the drug to tumorous tissues, while reducing toxicity to other organs is of key importance. We investigated different poly(methacrylic acid)-g-poly(ethyleneglycol methacrylate) polymers as in situ coating agents for magnetite nanocrystallites. The obtained magnetic nano-assemblies were in turn thoroughly characterized for their structural, colloidal and physicochemical properties (drug loading capacity/release, magnetic field triggered drug release, cell uptake and localization) in order to select the best performing system. With the focus on in vivo validation of such magnetic drug delivery systems for first time, we selected cisplatin as the drug, since it is a potent anticancer agent which exhibits serious side effects due to lack of selectivity. In addition, cisplatin would offer facile determination of the metal content in the animal tissues for biodistribution studies. Alongside post-mortem Pt determination in the tissues, the biodistribution of the drug nanocarriers was also monitored in real time with PET-CT (positron emission tomography/computed tomography) with and without the presence of magnetic field gradients; using a novel chelator-free method, the nanoparticles were radiolabeled with 68Ga without having to alter their structure with chemical modifications for conjugation of radiochelators. The ability to be radiolabeled in such a straightforward but very robust way, along with their measured high MRI response, renders them attractive for dual imaging, which is an important functionality for translational investigations. Their anticancer properties were evaluated in vitro and in vivo, in a cisplatin resistant HT-29 human colon adenocarcinoma model, with and without the presence of magnetic field gradients. Enhanced anticancer efficacy and reduced toxicity was recorded for the cisplatin-loaded nanocarriers in comparison to the free cisplatin, particularly when a magnetic field gradient was applied at the tumor site. Post mortem and real-time tissue distribution studies did not reveal increased cisplatin concentration in the tumor site, suggesting that the enhanced anticancer efficacy of the cisplatin-loaded nanocarriers is driven by mechanisms other than increased cisplatin accumulation in the tumors.
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Affiliation(s)
| | - Aristides Bakandritsos
- Department of Materials Science, University of Patras, Patras 26500, Greece; Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University in Olomouc, 17.listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Sotiris Galtsidis
- Institute of Biology, Medicinal Chemistry & Biotechnology, NHRF, Athens, Greece
| | | | - Benjamin P Burke
- Department of Chemistry and Positron Emission Tomography Research Centre, University of Hull, Cottingham Road, Hull HU6 7RX, UK
| | - Gonçalo S Clemente
- Department of Chemistry and Positron Emission Tomography Research Centre, University of Hull, Cottingham Road, Hull HU6 7RX, UK
| | - Christopher Cawthorne
- Department of Chemistry and Positron Emission Tomography Research Centre, University of Hull, Cottingham Road, Hull HU6 7RX, UK
| | - Stephen J Archibald
- Department of Chemistry and Positron Emission Tomography Research Centre, University of Hull, Cottingham Road, Hull HU6 7RX, UK
| | - Jiři Tuček
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University in Olomouc, 17.listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Radek Zbořil
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University in Olomouc, 17.listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Vasiliki Kantarelou
- Institute of Nuclear and Particle Physics, NCSR "Demokritos", Athens, Greece
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Rahaman H, Nath A, Paul R, Sengupta M, Ghosh SK. Fe3O4–Mn3O4 nanocomposites with moderate magnetism for in vitro cytotoxicity studies on macrophages. RSC Adv 2016. [DOI: 10.1039/c6ra17493k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Reduced magnetism of Fe3O4–Mn3O4 nanocomposites synthesised by alkaline hydrolysis has been explored for in vitro cytotoxicity studies on splenic macrophages.
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Affiliation(s)
| | - Anupam Nath
- Department of Biotechnology
- Assam University
- Silchar-788011
- India
| | - Rimi Paul
- Department of Chemistry
- Assam University
- Silchar-788011
- India
| | - Mahuya Sengupta
- Department of Biotechnology
- Assam University
- Silchar-788011
- India
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