scholarly journals INTERACTION OF IRON-CONTAINING NANOCLUSTER POLYOXOMETALATE WITH DOXORUBICIN

Author(s):  
Юрий Александрович Губарев ◽  
Наталья Шамильевна Лебедева ◽  
Маргарита Олеговна Тонкушина ◽  
Илья Дмитриевич Гагарин ◽  
Алексей Яковлевич Голуб ◽  
...  

Актуальной проблемой в области адресной доставки лекарственных веществ являются аспекты, относящиеся к транспорту высокотоксичных препаратов, обладающих нежелательными побочными эффектами, в частности противоопухолевых. Были рассчитаны термодинамические параметры комплексообразования нанокластерного полиоксометаллата {MoFe}, перспективного в качестве средства адресной доставки лекарств, и широко применяемого в клинической практике цитостатика - доксорубицина. Взаимодействие доксорубицина с {Mo Fe} сопровождалось экзотермическим эффектом, что говорит об энергетически выгодном образовании комплекса. Кинетика процесса высвобождения доксорубицина из комплекса в буферном растворе с pH , соответствующим значению pH крови, была изучена методом люминесцентной спектроскопии. Были определены константы скорости процессов деструкции {Mo Fe} в комплексе, сопровождающейся высвобождением доксорубицина, и дальнейшего комплексообразования высвободившегося доксорубицина с продуктами распада {MoFe}. В будущем возможно управление скоростью высвобождения доксорубицина путем дополнительной стабилизации {Mo Fe}, например, путем его ассоциации с альбумином. Actual problem in the field of targeted drug delivery is transport of highly toxic drugs, with undesirable side effects, in particular antitumor medicine. The thermodynamic parameters of complexation between nanocluster polyoxometalate {MoFe}, promising as a means of targeted drug delivery, and a cytostatic agent - doxorubicin, widely used in clinical practice, were studied. The interaction of doxorubicin with {MoFe} was accompanied by an exothermic effect, which indicates an energetically favorable formation of the complex. The kinetics of the release of doxorubicin from the complex in a buffer solution with a pH corresponding to the pH value of blood was studied by fluorescence spectroscopy. The rate constants of destruction processes in the complex, accompanied by the release of doxorubicin, and further complexation of the released doxorubicin with decay products were determined. In the future, it is possible to slow down the release of doxorubicin by stabilizing the {MoFe}, for example, when it is associated with albumin.

2020 ◽  
Vol 59 (11) ◽  
pp. 713-730
Author(s):  
Ambuj Gupta ◽  
Jaykumar Bhasarkar ◽  
Mohammed Rehaan Chandan ◽  
Aabid Hussain Shaik ◽  
Bandaru Kiran ◽  
...  

NANO ◽  
2014 ◽  
Vol 09 (07) ◽  
pp. 1450081 ◽  
Author(s):  
MAO SHEN ◽  
CHENGLIN WU ◽  
CAIPING LIN ◽  
GUODONG FAN ◽  
YANGMIN JIN ◽  
...  

Mesostructured chitosan-coated Fe 3 O 4 nanoparticles (CS-coated Fe 3 O 4 NPs) were synthesized by a facile one-step solvothermal method via using chitosan as a surface-modification agent. Subsequently, the surfaces of CS-coated Fe 3 O 4 NPs were successfully conjugated with folic acid (FA) molecules to obtain FA–CS-coated Fe 3 O 4 NPs for improving targeted drug delivery. The morphology, chemical component and magnetic property of as-prepared composite nanoparticles were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), dynamic light scattering (DLS), scanning transmission electron microscopy (SEM), transmission electron microscopy (TEM), thermal gravimetric analysis (TGA) and vibrating sample magnetometer (VSM). Furthermore, doxorubicin hydrochloride (DOX) as a model drug was encapsulated for investigating drug release pattern in vitro. The results show that the magnetization saturation value of FA–CS-coated Fe 3 O 4 NPs was about 28.5 emu/g, exhibiting superparamagnetic properties and mesostructure. DOX could be loaded to FA–CS-coated Fe 3 O 4 NPs with high capacity about 27.9%, and the release rate of DOX could be adjusted by the pH value. This work demonstrates that the prepared magnetic nanoparticles have potential applications in the treatment of cancer as targeting drug delivery carriers.


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