scholarly journals Non-Heating Alternating Magnetic Field Nanomechanical Stimulation of Biomolecule Structures via Magnetic Nanoparticles as the Basis for Future Low-Toxic Biomedical Applications

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2255
Author(s):  
Yuri I. Golovin ◽  
Dmitry Yu. Golovin ◽  
Ksenia Yu. Vlasova ◽  
Maxim M. Veselov ◽  
Azizbek D. Usvaliev ◽  
...  

The review discusses the theoretical, experimental and toxicological aspects of the prospective biomedical application of functionalized magnetic nanoparticles (MNPs) activated by a low frequency non-heating alternating magnetic field (AMF). In this approach, known as nano-magnetomechanical activation (NMMA), the MNPs are used as mediators that localize and apply force to such target biomolecular structures as enzyme molecules, transport vesicles, cell organelles, etc., without significant heating. It is shown that NMMA can become a biophysical platform for a family of therapy methods including the addressed delivery and controlled release of therapeutic agents from transport nanomodules, as well as selective molecular nanoscale localized drugless nanomechanical impacts. It is characterized by low system biochemical and electromagnetic toxicity. A technique of 3D scanning of the NMMA region with the size of several mm to several cm over object internals has been described.

2021 ◽  
Author(s):  
Magdalena Radović ◽  
Marija Mirković ◽  
Aleksandar S. Nikolić ◽  
Milorad Kuraica ◽  
Predrag Iskrenović ◽  
...  

Abstract Different phosphates and phosphonates have shown excellent coating ability toward magnetic nanoparticles, improving their stability and biocompatibility which enables their biomedical application. The magnetic hyperthermia efficiency of phosphates (IDP and IHP) and phosphonates (MDP and HEDP) coated Fe3O4 magnetic nanoparticles (MNPs) were evaluated in an alternating magnetic field. For a deeper understanding of hyperthermia, the behavior of investigated MNPs in the non-alternating magnetic field was monitored by measuring the transparency of the sample. To investigate their theranostic potential coated Fe3O4-MNPs were radiolabeled with radionuclide 177Lu. Phosphate coated MNPs were radiolabeled in high radiolabeling yield (> 99%) while phosphonate coated MNPs reached maximum radiolabeling yield of 78%. Regardless lower radiolabeling yield both radiolabeled phosphonate MNPs may be further purified reaching radiochemical purity of more than 95%. In vitro stabile radiolabeled nanoparticles in saline and HSA were obtained. The high heating ability of phosphates and phosphonates coated MNPs as sine qua non for efficient in vivo hyperthermia treatment and satisfactory radiolabeling yield justifies their further research in order to develop new theranostic agents.


Author(s):  
N. Balabushevich ◽  
K. Vlasova ◽  
D. Volodkin ◽  
Yu. Golovin ◽  
N. Klyachko

In this work, vaterite microparticles with an immobilized catalase (enzyme) and magnetic nanoparticles (MNPs) of magnetite, obtained by the co-precipitation method, were used to study the enzyme activity under low frequency alternating magnetic field.


Theranostics ◽  
2017 ◽  
Vol 7 (13) ◽  
pp. 3326-3337 ◽  
Author(s):  
Irina V. Belyanina ◽  
Tatiana N. Zamay ◽  
Galina S. Zamay ◽  
Sergey S. Zamay ◽  
Olga S. Kolovskaya ◽  
...  

2019 ◽  
Vol 9 (21) ◽  
pp. 6015-6026 ◽  
Author(s):  
Wen Tang ◽  
Tonghao Ma ◽  
Lina Zhou ◽  
Gaoya Wang ◽  
Xiaoli Wang ◽  
...  

In this study, we report facile, rapid and stable polyamine TEPA-induced tannic acid (TA) co-deposition system-functionalized magnetic nanoparticles, which may provide an improved nanoplatform for enzyme immobilization.


2015 ◽  
Vol 21 (42) ◽  
pp. 6038-6054 ◽  
Author(s):  
Dragoș Gudovan ◽  
Paul Balaure ◽  
Dan Mihăiescu ◽  
Adrian Fudulu ◽  
Bogdan Purcăreanu ◽  
...  

Nanoscale ◽  
2015 ◽  
Vol 7 (19) ◽  
pp. 9004-9012 ◽  
Author(s):  
Jinghua Li ◽  
Yan Hu ◽  
Yanhua Hou ◽  
Xinkun Shen ◽  
Gaoqiang Xu ◽  
...  

An alternating magnetic field triggered nanocarrier for drug delivery is fabricated for dual modal imaging-guided thermo-chemo cancer therapy.


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