Cluster formation of endohedral metallofullerenes with Y, Gd, and Ho in a solution and on a solid surface

Kareev, Ivan E.; Бубнов, В. П.; Alidzhanov, E. K.; Pashkevich, S. N.; Lantukh, Yu. D.; Letuta, S. N.; Razdobreev, D. A.

doi:10.1134/s106378341609016x

Phys. Solid State

2016

DOI: 10.1134/s106378341609016x

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Cluster formation of endohedral metallofullerenes with Y, Gd, and Ho in a solution and on a solid surface

Ivan E. Kareev

В. П. Бубнов

E. K. Alidzhanov

et al.

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Cited by 3 publications

(1 citation statement)

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“…However, we can preliminarily suggest that the decay in ROS-neutralizing ability might be concerned with dipole nature of Gd@Fln and formation of aggregates. The high efficiency of aggregate formation was confirmed previously: it was found that clusters of endohedral metalfullerenes reach hundreds of nanometers [93,94], in contrast to tens-nanometer clusters of empty fullerens [95].…”

supporting

confidence: 71%

Endohedral Gd-Containing Fullerenol: Toxicity, Antioxidant Activity, and Regulation of Reactive Oxygen Species in Cellular and Enzymatic Systems

Sushko

Vnukova

Churilov

et al. 2022

IJMS

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The Gd-containing metallofullerene derivatives are perspective magnetic resonance imaging contrast agents. We studied the bioeffects of a water-soluble fullerene derivative, gadolinium-endohedral fullerenol, with 40–42 oxygen groups (Gd@Fln). Bioluminescent cellular and enzymatic assays were applied to monitor toxicity and antioxidant activity of Gd@Fln in model solutions; bioluminescence was applied as a signaling physiological parameter. The Gd@Fln inhibited bioluminescence at high concentrations (>2·10−1 gL−1), revealing lower toxicity as compared to the previously studied fullerenols. Efficient activation of bioluminescence (up to almost 100%) and consumption of reactive oxygen species (ROS) in bacterial suspension were observed under low-concentration exposure to Gd@Fln (10−3–2·10−1 gL−1). Antioxidant capability of Gd@Fln was studied under conditions of model oxidative stress (i.e., solutions of model organic and inorganic oxidizers); antioxidant coefficients of Gd@Fln were determined at different concentrations and times of exposure. Contents of ROS were evaluated and correlations with toxicity/antioxidant coefficients were determined. The bioeffects of Gd@Fln were explained by hydrophobic interactions, electron affinity, and disturbing of ROS balance in the bioluminescence systems. The results contribute to understanding the molecular mechanism of “hormetic” cellular responses. Advantages of the bioluminescence assays to compare bioeffects of fullerenols based on their structural characteristics were demonstrated.

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supporting

confidence: 71%

Endohedral Gd-Containing Fullerenol: Toxicity, Antioxidant Activity, and Regulation of Reactive Oxygen Species in Cellular and Enzymatic Systems

Sushko

Vnukova

Churilov

et al. 2022

IJMS

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Filtration process combined with mechanical action, as a method for efficient extraction of endohedral metallofullerenes from carbon soot

Elesina

Чурилов

Vnukova

et al. 2019

Fullerenes, Nanotubes and Carbon Nanostructures

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Photophysics of Semiconductor Polymer Nanocomposite with Fullerene C60 and Endohedral Metallofullerene Ho@C82

et al. 2020

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Cluster formation of endohedral metallofullerenes with Y, Gd, and Ho in a solution and on a solid surface

Cited by 3 publications

References 27 publications

Endohedral Gd-Containing Fullerenol: Toxicity, Antioxidant Activity, and Regulation of Reactive Oxygen Species in Cellular and Enzymatic Systems

Endohedral Gd-Containing Fullerenol: Toxicity, Antioxidant Activity, and Regulation of Reactive Oxygen Species in Cellular and Enzymatic Systems

Filtration process combined with mechanical action, as a method for efficient extraction of endohedral metallofullerenes from carbon soot

Photophysics of Semiconductor Polymer Nanocomposite with Fullerene C60 and Endohedral Metallofullerene Ho@C82

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