Magnetotactic Bacteria and Magnetosomes: Basic Properties and Applications

Magnetochemistry

Elena S. Sergienko¹  Andrei Kosterov¹  Kamil G. Gareev²  Petr V. Kharitonskii³  Maxim A. Shevtsov⁴  Veronika V. Koziaeva⁵  Denis S. Grouzdev⁶ 

[1] Department of Earth Physics, Saint Petersburg University, 199034 Saint Petersburg, Russia;Department of Micro and Nanoelectronics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia;Department of Physics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia;Laboratory of Biomedical Nanotechnologies, Institute of Cytology of the Russian Academy of Sciences (RAS), 194064 Saint Petersburg, Russia;Research Center of Biotechnology of the Russian Academy of Sciences, Institute of Bioengineering, 119071 Moscow, Russia;SciBear LLC, 13617 Tallinn, Estonia;

关键词: magnetotactic bacteria;    magnetosome;    magnetite;    magnetofossils;    biomedicine;    biotechnology;   

DOI  :  10.3390/magnetochemistry7060086

来源: DOAJ

【 摘 要 】

Magnetotactic bacteria (MTB) belong to several phyla. This class of microorganisms exhibits the ability of magneto-aerotaxis. MTB synthesize biominerals in organelle-like structures called magnetosomes, which contain single-domain crystals of magnetite (Fe₃O₄) or greigite (Fe₃S₄) characterized by a high degree of structural and compositional perfection. Magnetosomes from dead MTB could be preserved in sediments (called fossil magnetosomes or magnetofossils). Under certain conditions, magnetofossils are capable of retaining their remanence for millions of years. This accounts for the growing interest in MTB and magnetofossils in paleo- and rock magnetism and in a wider field of biogeoscience. At the same time, high biocompatibility of magnetosomes makes possible their potential use in biomedical applications, including magnetic resonance imaging, hyperthermia, magnetically guided drug delivery, and immunomagnetic analysis. In this review, we attempt to summarize the current state of the art in the field of MTB research and applications.

【 授权许可】

Unknown