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Lyons T, Kekedjian C, Glaser P, Ohlin CA, van Eldik R, Rodriguez O, Albanese C, Van Keuren E, Stoll SL. Molecular Parameters Promoting High Relaxivity in Cluster-Nanocarrier Magnetic Resonance Imaging Contrast Agents. ACS APPLIED MATERIALS & INTERFACES 2022; 14:10.1021/acsami.2c12584. [PMID: 36283049 PMCID: PMC10502962 DOI: 10.1021/acsami.2c12584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
We have investigated the mechanism of relaxivity for two magnetic resonance imaging contrast agents that both employ a cluster-nanocarrier design. The first system termed Mn8Fe4-coPS comprises the cluster Mn8Fe4O12(L)16(H2O)4 or Mn8Fe4 (1) (L = carboxylate) co-polymerized with polystyrene to form ∼75 nm nanobeads. The second system termed Mn3Bpy-PAm used the cluster Mn3(O2CCH3)6(Bpy)2 or Mn3Bpy (2) where Bpy = 2,2'-bipyridine, entrapped in ∼180 nm polyacrylamide nanobeads. Here, we investigate the rate of water exchange of the two clusters, and corresponding cluster-nanocarriers, in order to elucidate the mechanism of relaxivity in the cluster-nanocarrier. Swift-Connick analysis of O-17 NMR was used to determine the water exchange rates of the clusters and cluster-nanocarriers. We found distinct differences in the water exchange rate between Mn8Fe4 and Mn8Fe4-coPS, and we utilized these differences to elucidate the nanobead structure. Using the transverse relaxivity from O-17 NMR line widths, we were able to determine the hydration state of the Mn3Bpy (2) cluster as well as Mn3Bpy-PAm. Using these hydration states in the Swift-Connick analysis of O-17 NMR, we found the water exchange rate to be extremely close in value for the cluster Mn3Bpy and cluster-nanocarrier Mn3Bpy-PAm.
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Affiliation(s)
- Trevor Lyons
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C.20057, United States
| | - Chloe Kekedjian
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C.20057, United States
| | - Priscilla Glaser
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C.20057, United States
| | - C André Ohlin
- Department of Chemistry, Umeå University, Umeå907 36, Sweden
| | - Rudi van Eldik
- Faculty of Chemistry, Nicolaus Copernicus University, Torun87 100, Poland
- Inorganic Chemistry, Department of Chemistry and Pharmacy, University of Erlangen-Nuremberg, Egerlandstrasse 1, Erlangen91058, Germany
| | - Olga Rodriguez
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, D.C.20057, United States
| | - Christopher Albanese
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, D.C.20057, United States
- Department of Radiology, Georgetown University Medical Center, Washington, D.C.20057, United States
| | - Edward Van Keuren
- Department of Physics, and Institute for Soft Matter Synthesis and Metrology, Georgetown University, 37th and O Streets NW, Washington, D.C.20057, United States
| | - Sarah L Stoll
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C.20057, United States
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Ghosh D, Das S, Gahlot VK, Pulimi M, Anand S, Chandrasekaran N, Rai PK, Mukherjee A. Nano-SiO 2 transport and retention in saturated porous medium: Influence of pH, ionic strength, and natural organics. JOURNAL OF CONTAMINANT HYDROLOGY 2022; 248:104029. [PMID: 35653834 DOI: 10.1016/j.jconhyd.2022.104029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 04/30/2022] [Accepted: 05/22/2022] [Indexed: 06/15/2023]
Abstract
Nano silica (nSiO2), induces potential harmful effects on the living environment and human health. It is well established that SiO2 facilitates the co-transport of a variety of other contaminants, including heavy metals and pesticides. The current study focused on the systematic evaluation of the effects of multiple physicochemical parameters such as pH (5, 7, and 9), ionic strength (10, 50, and 100 mM), and humic acid (0.1, 1, and 10 mg/L) on the transport and retention of nSiO2 in saturated porous medium. Additionally, the influent concentration of nSiO2 (10, 50, and 100 mg/L) was also varied. Our experimental findings indicate that the size of nSiO2 aggregates was directly related to the pH, ionic strength, HA, and particle concentration had a significant impact on the breakthrough curves (BTCs). The stability provided by the varying concentrations of pH and humic acid had a significant effect on the size of nSiO2 aggregates and transport (C/C0 > 0.7). The presence of a greater magnitude of negative charge on the surface of both nSiO2 and quartz sand resulted in less aggregation and enhanced flow of nSiO2 through the sand column. The Electrostatic and steric repulsion forces were the primary governing mechanisms in relation to the size of nSiO2 aggregates, affecting the single-collector efficiency and attachment efficiency, which determined the maximal transport of nSiO2. Conversely, a probable increase in Van der Waals force of attraction exacerbated the particle deposition and reduced their mobility for high ionic strength, and particle concentrations (C/C0 < 0.1). The formation of large nSiO2 aggregates, in particular, was principally responsible for the enhancement of nSiO2 retention in sand columns over a broad range of IS and particle concentration. The interaction energy profiles based on the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory were determined to understand the mechanism of nSiO2 deposition. Aditionally, all the experimental BTCs were mathematically simulated and justified by the colloidal filtration theory (CFT). Considering the environmental ramifications, the transport behavior of nSiO2 was further evaluated in various natural matrices such as river, lake, ground, and tap water. The nSiO2 suspended in the river, lake, and tap water had significantly higher mobility (C/C0 > 0.7), whereas groundwater indicated higher retention (C/C0 < 0.3). The study advances our collective knowledge of physicochemical and environmental parameters that can affect particle mobility.
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Affiliation(s)
- Debayan Ghosh
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Soupam Das
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Vikas Kumar Gahlot
- Centre for Fire, Explosive and Environment Safety, Timarpur, Delhi 110054, India
| | - Mrudula Pulimi
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Shalini Anand
- Centre for Fire, Explosive and Environment Safety, Timarpur, Delhi 110054, India
| | - N Chandrasekaran
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Pramod Kumar Rai
- Centre for Fire, Explosive and Environment Safety, Timarpur, Delhi 110054, India
| | - Amitava Mukherjee
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, Tamil Nadu, India.
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Laranjeira MS, Ribeiro TP, Magalhães AI, Silva PC, Santos JA, Monteiro FJ. Magnetic mesoporous silica nanoparticles as a theranostic approach for breast cancer: Loading and release of the poorly soluble drug exemestane. Int J Pharm 2022; 619:121711. [DOI: 10.1016/j.ijpharm.2022.121711] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 03/17/2022] [Accepted: 03/28/2022] [Indexed: 10/18/2022]
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Lotfipour F, Shahi S, Khezri K, Salatin S, Dizaj SM. Safety issues of nanomaterials for dermal pharmaceutical products. Pharm Nanotechnol 2022; 10:PNT-EPUB-122273. [PMID: 35382729 DOI: 10.2174/1871520622666220405093811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 12/21/2021] [Accepted: 01/17/2022] [Indexed: 11/22/2022]
Abstract
Nanomaterials (NMs) have favorable application in the medicine area, specifically in regard to the carry of pharmaceutical ingredients to provide targeted drug delivery systems. The skin is an excellent route for the delivery of pharmaceutical nano-transporters for skin-related applications. The physicochemical properties of nanomaterials such as size, hydrophobicity, loading capacity, charge and weight are vital for a skin penetrating system. Many nanocarriers such as polymeric nanoparticles, inorganic nanomaterials and, lipid nanostructures have been utilized for dermal delivery of active ingredients and others such as carbon nanotubes and fullerenes require more examination for future application in the skin-related area. Some negative side effects and nano-cytotoxicity of nanomaterials require special attention while investigating different nanomaterials for medicinal applications. Then, in the current review, we had a view on the safety issues of nanomaterials for dermal pharmaceutical products.
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Affiliation(s)
- Farzaneh Lotfipour
- Food and Drug Safety Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa,ON K1H 8M5, Canada
| | - Shahriar Shahi
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Faculty of Dentistry, Department of Endodontics, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Khadijeh Khezri
- Deputy of Food and Drug Administration, Urmia University of Medical Sciences, Urmia, Iran
| | - Sara Salatin
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Solmaz Maleki Dizaj
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Li X, Xia S, Ji R, Zhan W, Zhou W. Evaluation of Microwave Ablation in 4T1 Breast Tumor by a Novel VEFGR2 Targeted Ultrasound Contrast Agents. Front Oncol 2021; 11:690152. [PMID: 34354946 PMCID: PMC8329532 DOI: 10.3389/fonc.2021.690152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 06/28/2021] [Indexed: 02/01/2023] Open
Abstract
Objectives A novel ultrasound contrast agent (UCA) VEGFR2-targeting iron-doped silica (SiO2) hollow nanoparticles (VEGFR2-PEG-HSNs-Fe NPs) was prepared and applied in microwave ablation for breast cancer to investigate its value in the evaluation of effectiveness after tumor ablation. Methods VEGFR2-PEG-HSNs-Fe NPs were prepared by using nano-SiO2, which was regarded as a substrate and etched by ferrous acetate, and then modified with anti-VEGFR2 antibody. Laser confocal microscope and flow cytometry were used to observe its main physicochemical properties, and biological safety was also investigated. After the xenograft tumor was treated with microwave ablation, the extent of perfusion defect was evaluated by ultrasound by injecting VEGFR2-PEG-HSNs-Fe NPs. Results The average particle size of VEGFR2-PEG-HSNs-Fe was 276.64 ± 30.31 nm, and the surface potential was −13.46 ± 2.83 mV. In vitro, the intensity of ultrasound signal increased with UCA concentration. Good biosafety was performed in in vivo and in vitro experiments. The enhanced ultrasound signal was detected in tumors after injection of VEGFR2-PEG-HSNs-Fe NPs, covering the whole tumor. The lesions, which were incompletely ablated, presented as contrast agent perfusion at the periphery of the tumor, and contrast enhanced ultrasound (CEUS) was performed again after complementary ablation. It was confirmed that all the lesions were completely ablated. Conclusion Nano-targeted UCAs VEGFR2-PEG-HSNs-Fe NPs had good biosafety and ability of specific imaging, which might be used as a contrast agent in CEUS to evaluate the efficacy of tumor ablation.
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Affiliation(s)
- Xiaoyu Li
- Department of Ultrasound, RuiJin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Shujun Xia
- Department of Ultrasound, RuiJin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Ri Ji
- Department of Ultrasound, RuiJin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Weiwei Zhan
- Department of Ultrasound, RuiJin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Wei Zhou
- Department of Ultrasound, RuiJin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.,Department of Ultrasound, RuiJin Hospital/Lu Wan Branch, School of Medicine, Shanghai Jiaotong University, Shanghai, China
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Mesoporous Silica Platforms with Potential Applications in Release and Adsorption of Active Agents. Molecules 2020; 25:molecules25173814. [PMID: 32825791 PMCID: PMC7503268 DOI: 10.3390/molecules25173814] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/13/2020] [Accepted: 08/20/2020] [Indexed: 01/01/2023] Open
Abstract
In recent years, researchers focused their attention on mesoporous silica nanoparticles (MSNs) owing to the considerable advancements of the characterization methods, especially electron microscopy methods, which allowed for a clear visualization of the pore structure and the materials encapsulated within the pores, along with the X-ray diffraction (small angles) methods and specific surface area determination by Brunauer–Emmett–Teller (BET) technique. Mesoporous silica gained important consideration in biomedical applications thanks to its tunable pore size, high surface area, surface functionalization possibility, chemical stability, and pore nature. Specifically, the nature of the pores allows for the encapsulation and release of anti-cancer drugs into tumor tissues, which makes MSN ideal candidates as drug delivery carriers in cancer treatment. Moreover, the inner and outer surfaces of the MSN provide a platform for further functionalization approaches that could enhance the adsorption of the drug within the silica network and the selective targeting and controlled release to the desired site. Additionally, stimuli-responsive mesoporous silica systems are being used as mediators in cancer therapy, and through the release of the therapeutic agents hosted inside the pores under the action of specific triggering factors, it can selectively deliver them into tumor tissues. Another important application of the mesoporous silica nanomaterials is related to its ability to extract different hazardous species from aqueous media, some of these agents being antibiotics, pesticides, or anti-tumor agents. The purpose of this paper is to analyze the methods of MSN synthesis and related characteristics, the available surface functionalization strategies, and the most important applications of MSN in adsorption as well as release studies. Owing to the increasing antibiotic resistance, the need for developing materials for antibiotic removal from wastewaters is important and mesoporous materials already proved remarkable performances in environmental applications, including removal or even degradation of hazardous agents such as antibiotics and pesticides.
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Nanomaterials in Cosmetics: Recent Updates. NANOMATERIALS 2020; 10:nano10050979. [PMID: 32443655 PMCID: PMC7279536 DOI: 10.3390/nano10050979] [Citation(s) in RCA: 115] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 04/27/2020] [Accepted: 05/08/2020] [Indexed: 12/15/2022]
Abstract
This review paper collects the recent updates regarding the use of nanomaterials in cosmetics. Special focus is given to the applications of nanomaterials in the cosmetic industry, their unique features, as well as the advantages of nanoscale ingredients compared to non-nanoscale products. The state-of-the-art practices for physicochemical and toxicological characterization of nanomaterials are also reviewed. Moreover, special focus is given to the current regulations and safety assessments that are currently in place regarding the use of nanomaterials in cosmetics—the new 2019 European guidance for the safety assessment of nanomaterials in cosmetics, together with the new proposed methodologies for the toxicity evaluation of nanomaterials. Concerns over health risks have limited the further incorporation of nanomaterials in cosmetics, and since new nanomaterials may be used in the future by the cosmetic industry, a detailed characterization and risk assessment are needed to fulfill the standard safety requirements.
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Li L, Wang W, Tang J, Wang Y, Liu J, Huang L, Wang Y, Guo F, Wang J, Shen W, Belfiore LA. Classification, Synthesis, and Application of Luminescent Silica Nanoparticles: a Review. NANOSCALE RESEARCH LETTERS 2019; 14:190. [PMID: 31165269 PMCID: PMC6548908 DOI: 10.1186/s11671-019-3006-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Accepted: 05/07/2019] [Indexed: 05/09/2023]
Abstract
Luminescent materials are of worldwide interest because of their unique optical properties. Silica, which is transparent to light, is an ideal matrix for luminescent materials. Luminescent silica nanoparticles (LSNs) have broad applications because of their enhanced chemical and thermal stability. Silica spheres of various sizes could be synthesized by different methods to satisfy specific requirements. Diverse luminescent dyes have potential for different applications. Subject to many factors such as quenchers, their performance was not quite satisfying. This review thus discusses the development of LSNs including their classification, synthesis, and application. It is the highlight that how silica improves the properties of luminescent dye and what role silica plays in the system. Further, their applications in biology, display, and sensors are also described.
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Affiliation(s)
- Lei Li
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and Engineering, Qingdao University, 266071 Qingdao, People’s Republic of China
| | - Wei Wang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and Engineering, Qingdao University, 266071 Qingdao, People’s Republic of China
| | - Jianguo Tang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and Engineering, Qingdao University, 266071 Qingdao, People’s Republic of China
| | - Yao Wang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and Engineering, Qingdao University, 266071 Qingdao, People’s Republic of China
| | - Jixian Liu
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and Engineering, Qingdao University, 266071 Qingdao, People’s Republic of China
| | - Linjun Huang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and Engineering, Qingdao University, 266071 Qingdao, People’s Republic of China
| | - Yanxin Wang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and Engineering, Qingdao University, 266071 Qingdao, People’s Republic of China
| | - Fengxiang Guo
- Institute of Oceanographic Instrumentation, Shandong Provincial Key Laboratory of Marine Monitoring Instrument Equipment Technology, National Engineering and Technological Research Center of Marine Monitoring Equipment, Qilu University of Technology (Shandong Academy of Sciences), Qingdao, 266001 China
| | - Jiuxing Wang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and Engineering, Qingdao University, 266071 Qingdao, People’s Republic of China
| | - Wenfei Shen
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and Engineering, Qingdao University, 266071 Qingdao, People’s Republic of China
| | - Laurence A. Belfiore
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523 USA
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Liu C, Xu N, Feng G, Zhou D, Cheng X, Li Z. Hydrochars and phosphate enhancing the transport of nanoparticle silica in saturated sands. CHEMOSPHERE 2017; 189:213-223. [PMID: 28942247 DOI: 10.1016/j.chemosphere.2017.09.066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 09/12/2017] [Accepted: 09/15/2017] [Indexed: 06/07/2023]
Abstract
Due to the potential negative impact of nano silica (nSiO2) on human's health and living environments, it is important to investigate their transport in soil environments. Hydrochars has been widely used in agricultural soil and phosphate (P) is an important nutrient, thus the aggregation and transport of nSiO2 in saturated sand columns were investigated in single and binary systems of hydrochars and P. The experimental results showed that the nSiO2 aggregates can be restablized by the adsorption of P or the attachment of hydrochars at high IS (>100 mM) and low pH (<7.0). Accordingly, the transport of nSiO2 in sand columns is enhanced due to the smaller particle size. However, the nSiO2 presents the distinct surface characteristics at pH > 7.0 from that at pH < 7.0. Thus, nSiO2 has a better dispersivity in 300 mM NaCl solution at high pH (9.0). Nevertheless, their deposition to sands becomes pronounced in the presence of hydrochars and/or P. In particular, the formation of nSiO2-hydrochar-Phosphate clusters associated with the larger size mainly contributes to the enhancement of nSiO2 retention in sand columns during the wide pH range, when hydrochars and P coexist in suspensions. The two-site dynamic model fitting results showed that the reversible retention is related to k2 (First-order straining coefficient on site 2). The results in this study will provide the theoretical basis for assessing the retention of nSiO2 in soil environment with the presence of hydrochars and phosphate.
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Affiliation(s)
- Cheng Liu
- Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry Biology and Material Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Nan Xu
- Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry Biology and Material Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Gang Feng
- Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry Biology and Material Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Dongmei Zhou
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Xueying Cheng
- Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry Biology and Material Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Zuling Li
- Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry Biology and Material Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
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Ottersbach A, Mykhaylyk O, Heidsieck A, Eberbeck D, Rieck S, Zimmermann K, Breitbach M, Engelbrecht B, Brügmann T, Hesse M, Welz A, Sasse P, Wenzel D, Plank C, Gleich B, Hölzel M, Bloch W, Pfeifer A, Fleischmann BK, Roell W. Improved heart repair upon myocardial infarction: Combination of magnetic nanoparticles and tailored magnets strongly increases engraftment of myocytes. Biomaterials 2017; 155:176-190. [PMID: 29179133 DOI: 10.1016/j.biomaterials.2017.11.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 11/05/2017] [Accepted: 11/11/2017] [Indexed: 01/02/2023]
Abstract
Cell replacement in the heart is considered a promising strategy for the treatment of post-infarct heart failure. Direct intramyocardial injection of cells proved to be the most effective application route, however, engraftment rates are very low (<5%) strongly hampering its efficacy. Herein we combine magnetic nanoparticle (MNP) loading of EGFP labeled embryonic cardiomyocytes (eCM) and embryonic stem cell-derived cardiomyocytes (ES-CM) with application of custom designed magnets to enhance their short and long-term engraftment. To optimize cellular MNP uptake and magnetic force within the infarct area, first numerical simulations and experiments were performed in vitro. All tested cell types could be loaded efficiently with SOMag5-MNP (200 pg/cell) without toxic side effects. Application of a 1.3 T magnet at 5 mm distance from the heart for 10 min enhanced engraftment of both eCM and ES-CM by approximately 7 fold at 2 weeks and 3.4 fold (eCM) at 8 weeks after treatment respectively and also strongly improved left ventricular function at all time points. As underlying mechanisms we found that application of the magnetic field prevented the initial dramatic loss of cells via the injection channel. In addition, grafted eCM displayed higher proliferation and lower apoptosis rates. Electron microscopy revealed better differentiation of engrafted eCM, formation of cell to cell contacts and more physiological matrix formation in magnet-treated grafts. These results were corroborated by gene expression data. Thus, combination of MNP-loaded cells and magnet-application strongly increases long-term engraftment of cells addressing a major shortcoming of cardiomyoplasty.
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Affiliation(s)
- Annika Ottersbach
- Department of Cardiac Surgery, Medical Faculty, University of Bonn, Sigmund Freud Str. 25, 53105 Bonn, Germany; Institute of Physiology I, Life&Brain Center, Medical Faculty, University of Bonn, Sigmund Freud Str. 25, 53105 Bonn, Germany
| | - Olga Mykhaylyk
- Institute of Molecular Immunology/ Experimental Oncology, Klinikum München rechts der Isar, Technische Universität München, Ismaningerstr. 22, 81675 München, Germany
| | - Alexandra Heidsieck
- Institute of Medical Engineering (IME.TUM), Boltzmannstr. 11, 85748 Garching b. München, Germany
| | - Dietmar Eberbeck
- Physikalisch-Technische Bundesanstalt (PTB), Abbestraße 2-12, 10587 Berlin, Germany
| | - Sarah Rieck
- Institute of Physiology I, Life&Brain Center, Medical Faculty, University of Bonn, Sigmund Freud Str. 25, 53105 Bonn, Germany
| | - Katrin Zimmermann
- Institute of Pharmacology and Toxicology, Medical Faculty, University of Bonn, Sigmund Freud Str. 25, 53105 Bonn, Germany
| | - Martin Breitbach
- Institute of Physiology I, Life&Brain Center, Medical Faculty, University of Bonn, Sigmund Freud Str. 25, 53105 Bonn, Germany
| | - Britta Engelbrecht
- Department of Cardiac Surgery, Medical Faculty, University of Bonn, Sigmund Freud Str. 25, 53105 Bonn, Germany
| | - Tobias Brügmann
- Institute of Physiology I, Life&Brain Center, Medical Faculty, University of Bonn, Sigmund Freud Str. 25, 53105 Bonn, Germany
| | - Michael Hesse
- Institute of Physiology I, Life&Brain Center, Medical Faculty, University of Bonn, Sigmund Freud Str. 25, 53105 Bonn, Germany
| | - Armin Welz
- Department of Cardiac Surgery, Medical Faculty, University of Bonn, Sigmund Freud Str. 25, 53105 Bonn, Germany
| | - Philipp Sasse
- Institute of Physiology I, Life&Brain Center, Medical Faculty, University of Bonn, Sigmund Freud Str. 25, 53105 Bonn, Germany
| | - Daniela Wenzel
- Institute of Physiology I, Life&Brain Center, Medical Faculty, University of Bonn, Sigmund Freud Str. 25, 53105 Bonn, Germany
| | - Christian Plank
- Institute of Molecular Immunology/ Experimental Oncology, Klinikum München rechts der Isar, Technische Universität München, Ismaningerstr. 22, 81675 München, Germany
| | - Bernhard Gleich
- Institute of Medical Engineering (IME.TUM), Boltzmannstr. 11, 85748 Garching b. München, Germany
| | - Michael Hölzel
- Unit for RNA Biology, Department of Clinical Chemistry and Clinical Pharmacology, University of Bonn, Sigmund Freud Str. 25, 53105 Bonn, Germany
| | - Wilhelm Bloch
- Institute of Cardiovascular Research and Sport Medicine, Department of Molecular and Cellular Sport Medicine, German Sport University Cologne, 50933 Cologne, Germany
| | - Alexander Pfeifer
- Institute of Pharmacology and Toxicology, Medical Faculty, University of Bonn, Sigmund Freud Str. 25, 53105 Bonn, Germany
| | - Bernd K Fleischmann
- Institute of Physiology I, Life&Brain Center, Medical Faculty, University of Bonn, Sigmund Freud Str. 25, 53105 Bonn, Germany.
| | - Wilhelm Roell
- Department of Cardiac Surgery, Medical Faculty, University of Bonn, Sigmund Freud Str. 25, 53105 Bonn, Germany.
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Mebert AM, Baglole CJ, Desimone MF, Maysinger D. Nanoengineered silica: Properties, applications and toxicity. Food Chem Toxicol 2017; 109:753-770. [DOI: 10.1016/j.fct.2017.05.054] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 05/26/2017] [Indexed: 02/06/2023]
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