On the adsorption of magnetite nanoparticles on lysozyme amyloid fibrils

被引：20

作者：

Majorosova, Jozefina ^{[1
]}

Petrenko, Viktor I. ^{[2
,3
]}

Siposova, Katarina ^{[1
]}

Timko, Milan ^{[1
]}

Tomasovicova, Natalia ^{[1
]}

Garamus, Vasil M. ^{[4
]}

Koralewski, Marceli ^{[5
]}

Avdeev, Mikhail V. ^{[2
]}

Leszczynski, Blazej ^{[5
]}

Jurga, Stefan ^{[6
]}

Gazova, Zuzana ^{[1
]}

Hayryan, Shura ^{[7
]}

Hu, Chin-Kun ^{[7
]}

Kopcansky, Peter ^{[1
]}

机构：

[1] SAS, Inst Expt Phys, Watsonova 47, Kosice 04001, Slovakia

[2] Joint Inst Nucl Res, Joliot Curie 6, Dubna 141980, Moscow Region, Russia

[3] Kyiv Taras Shevchenko Natl Univ, Volodymyrska St 64, UA-01033 Kiev, Ukraine

[4] Helmholtz Zentrum Geesthacht, Ctr Mat & Coastal Res, Max Planck Str 1, D-21502 Geesthacht, Germany

[5] Adam Mickiewicz Univ, Fac Phys, Umultowska 85, PL-61614 Poznan, Poland

[6] Adam Mickiewicz Univ, NanoBiomed Ctr, Umultowska 85, PL-61614 Poznan, Poland

[7] Acad Sinica, Inst Phys, 128 Sec 2,Acad Rd, Taipei 11529, Taiwan

来源：

COLLOIDS AND SURFACES B-BIOINTERFACES | 2016年 / 146卷

关键词：

Amyloid fibrils; Lysozyme; Magnetic nanoparticles; Small-angle X-ray scattering; Transmission electron microscopy; Faraday rotation; Interaction of nanoparticles with biological molecules; ANGLE SCATTERING DATA; EGG-WHITE LYSOZYME; ATOMIC-FORCE MICROSCOPY; X-RAY; NEUTRON-SCATTERING; HEN LYSOZYME; PROTEIN; AGGREGATION; PEPTIDE; DENATURATION;

D O I：

10.1016/j.colsurfb.2016.07.024

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

An adsorption of magnetic nanoparticles (MNP) from electrostatically stabilized aqueous ferrofluids on amyloid fibrils of hen egg white lysozyme (HEWL) in 2 mg/mL acidic dispersions have been detected for the MNP concentration range of 0.01-0.1 vol.%. The association of the MNP with amyloid fibrils has been characterized by transmission electron microscopy (TEM), small-angle X-ray scattering (SAXS) and magneto-optical measurements. It has been observed that the extent of adsorption is determined by the MNP concentration. When increasing the MNP concentration the formed aggregates of magnetic particles repeat the general rod-like structure of the fibrils. The effect is not observed when MNP are mixed with the solution of lysozyme monomers. The adsorption has been investigated with the aim to clarify previously found disaggregation activity of MNP in amyloid fibrils dispersions and to get deeper insight into interaction processes between amyloids and MNP. The observed effect is also discussed with respect to potential applications for ordering lysozyme amyloid fibrils in a liquid crystal phase under external magnetic fields. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：794 / 800

页数：7

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