scholarly journals Construction of a device for magnetic separation of superparamagnetic iron oxide nanoparticles

2015 ◽  
Vol 1 (1) ◽  
pp. 306-309 ◽  
Author(s):  
Kerstin Kläser ◽  
Matthias Graeser ◽  
Dirk Steinhagen ◽  
Kerstin Luedtke-Buzug
Keyword(s):  
Iron Oxide ◽  
Magnetic Separation ◽  
Iron Oxide Nanoparticles ◽  
Superparamagnetic Iron Oxide ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Iron Oxide Particles ◽  
Huge Impact ◽  
Magnetic Resonance Imaging Mri ◽  
Particle Imaging

AbstractSuspensions of iron oxide particles, so called ferrofluids, are successfully used in various technical, biochemical and medical applications. For example they find use in the area of sensor engineering, magnetic resonance imaging (MRI) and especially magnetic particle imaging (MPI). MPI is a new tomographic imaging technique that determines the spatial distribution of superparamagnetic iron oxide nanoparticles (SPIONs). Besides a very high spatial and temporal resolution MPI provides quantitative realtime imageing. The nanoparticles cause a magnetization change that can be measured. As the particle size distribution has a huge impact on the magnetization behavior is an important parameter for optimization. While synthesizing, SPIONs particles with various dimensions are formed what necessitates a systematically separation by size. For this purpose a construction of a simple device for magnetic separation of SPIONs has been developed. First attemps of separation show the potential of this method.

scholarly journals Use of Superparamagnetic Iron Oxide Nanoparticles (SPIONs) via Multiple Imaging Modalities and Modifications to Reduce Cytotoxicity: An Educational Review

2020 ◽  
Vol 1 (1) ◽  
pp. 105-135
Author(s):  
Nicholas Nelson ◽  
John Port ◽  
Mukesh Pandey
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Targeted Delivery ◽  
Superparamagnetic Iron Oxide ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Positron Emission ◽  
Multiple Imaging ◽  
Specific Accumulation ◽  
Magnetic Resonance Imaging Mri

The aim of the present educational review on superparamagnetic iron oxide nanoparticles (SPIONs) is to inform and guide young scientists and students about the potential use and challenges associated with SPIONs. The present review discusses the basic concepts of magnetic resonance imaging (MRI), basic construct of SPIONs, cytotoxic challenges associated with SPIONs, shape and sizes of SPIONs, site-specific accumulation of SPIONs, various methodologies applied to reduce cytotoxicity including coatings with various materials, and application of SPIONs in targeted delivery of chemotherapeutics (Doxorubicin), biotherapeutics (DNA, siRNA), and positron emission tomography (PET) imaging applications.

scholarly journals Intracellular dynamics of superparamagnetic iron oxide nanoparticles for magnetic particle imaging

Nanoscale ◽  
2019 ◽  
Vol 11 (16) ◽  
pp. 7771-7780 ◽  
Author(s):  
Eric Teeman ◽  
Carolyn Shasha ◽  
James E. Evans ◽  
Kannan M. Krishnan
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Environmental Conditions ◽  
Magnetic Particle ◽  
Superparamagnetic Iron Oxide ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Magnetic Response ◽  
Magnetic Particle Imaging ◽  
Particle Imaging

An examination of the effects of intracellular environmental conditions on the dynamic magnetic response of superparamagnetic iron oxide nanoparticles.

scholarly journals Superparamagnetic Iron Oxide Nanoparticles—Current and Prospective Medical Applications

Materials ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 617 ◽  
Author(s):  
Joanna Dulińska-Litewka ◽  
Agnieszka Łazarczyk ◽  
Przemysław Hałubiec ◽  
Oskar Szafrański ◽  
Karolina Karnas ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Superparamagnetic Iron Oxide ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Pancreatic Tumors ◽  
Oxide Nanoparticles ◽  
Medical Sciences ◽  
Fast Development ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain

The recent, fast development of nanotechnology is reflected in the medical sciences. Superparamagnetic Iron Oxide Nanoparticles (SPIONs) are an excellent example. Thanks to their superparamagnetic properties, SPIONs have found application in Magnetic Resonance Imaging (MRI) and magnetic hyperthermia. Unlike bulk iron, SPIONs do not have remnant magnetization in the absence of the external magnetic field; therefore, a precise remote control over their action is possible. This makes them also useful as a component of the advanced drug delivery systems. Due to their easy synthesis, biocompatibility, multifunctionality, and possibility of further surface modification with various chemical agents, SPIONs could support many fields of medicine. SPIONs have also some disadvantages, such as their high uptake by macrophages. Nevertheless, based on the ongoing studies, they seem to be very promising in oncological therapy (especially in the brain, breast, prostate, and pancreatic tumors). The main goal of our paper is, therefore, to present the basic properties of SPIONs, to discuss their current role in medicine, and to review their applications in order to inspire future developments of new, improved SPION systems.

Phosphocholine-decorated superparamagnetic iron oxide nanoparticles: defining the structure and probing in vivo applications

Nanoscale ◽  
2016 ◽  
Vol 8 (19) ◽  
pp. 10078-10086 ◽  
Author(s):  
Alessandra Luchini ◽  
Carlo Irace ◽  
Rita Santamaria ◽  
Daniela Montesarchio ◽  
Richard K. Heenan ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Iron Oxide ◽  
Magnetic Resonance ◽  
Iron Oxide Nanoparticles ◽  
Superparamagnetic Iron Oxide ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri

Superparamagnetic Iron Oxide Nanoparticles (SPIONs) are performing contrast agents for Magnetic Resonance Imaging (MRI).

TARGETING CYCLIN B1 WITH ANTISENSE OLIGONUCLETOTIDES- COATED SUPERPARAMAGNETIC IRON OXIDE NANOPARTICLES

2018 ◽  
Vol 6 (10) ◽  
Author(s):  
Hosam Zaghloul ◽  
Doaa A. Shahin ◽  
Ibrahim El- Dosoky ◽  
Mahmoud E. El-awady ◽  
Fardous F. El-Senduny ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Cellular Uptake ◽  
Superparamagnetic Iron Oxide ◽  
Cyclin B1 ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Mcf7 Cells ◽  
M Phase ◽  
The Impact

Antisense oligonucleotides (ASO) represent an attractive trend as specific targeting molecules but sustain poor cellular uptake meanwhile superparamagnetic iron oxide nanoparticles (SPIONs) offer stability of ASO and improved cellular uptake. In the present work we aimed to functionalize SPIONs with ASO targeting the mRNA of Cyclin B1 which represents a potential cancer target and to explore its anticancer activity. For that purpose, four different SPIONs-ASO conjugates, S-M (1–4), were designated depending on the sequence of ASO and constructed by crosslinking carboxylated SPIONs to amino labeled ASO. The impact of S-M (1–4) on the level of Cyclin B1, cell cycle, ROS and viability of the cells were assessed by flowcytometry. The results showed that S-M3 and S-M4 reduced the level of Cyclin B1 by 35 and 36%, respectively. As a consequence to downregulation of Cyclin B1, MCF7 cells were shown to be arrested at G2/M phase (60.7%). S-M (1–4) led to the induction of ROS formation in comparison to the untreated control cells. Furthermore, S-M (1–4) resulted in an increase in dead cells compared to the untreated cells and SPIONs-treated cells. In conclusion, targeting Cyclin B1 with ASO-coated SPIONs may represent a specific biocompatible anticancer strategy.

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