Magneto-optical hyperthermia agents based on probiotic bacteria loaded with magnetic and gold nanoparticles

Garcés, Víctor; González, Ana; Gálvez, Natividad; Delgado-López, José Manuel; Calvino, José J.; Trasobares, Susana; Fernández‐Afonso, Yilian; Gutiérrez, Lucía; Domínguez‐Vera, José M.

doi:10.1039/d1nr08513a

Cited by 12 publications

(11 citation statements)

References 39 publications

(49 reference statements)

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“…This could also be exploited for directing microorganisms (bacteria in this case) against a specific target (whole plant or areas) by selectively spraying with nanoparticles before microbial inoculation. Furthermore, nanomaterials can add new properties to microorganisms when attached to them, such as paramagnetism, 48,49 which could be exploited in new ways. Application of magnetic fields induces a magnetic moment in paramagnetic nanoparticles by attracting unpaired electrons from the material 48 .…”

Section: Nanodevices For Microorganismsmentioning

confidence: 99%

Can nanotechnology improve the application of bioherbicides?

Pérez‐de‐Luque

2023

Pest Management Science

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Bioherbicides are composed of microorganisms or natural compounds and are used for weed control; however, they have specific weaknesses and constraints that hinder their development and success under field conditions. Nanotechnology can help to overcome these limitations by providing a good starting point for the design of specific formulations and carriers that minimize the deficiencies of natural compounds and microorganisms, such as low solubility, short shelf life or a loss of viability. In addition, nanoformulations can help to improve the efficacy of bioherbicides by increasing their effectiveness and bioavailability, reducing the amount required for a treatment, and enhancing their ability to target specific weeds while preserving the crop. However, it is important to choose the right materials and nanodevices depending on specific needs and considering several factors inherent to nanomaterials such as production cost, safety or possible toxic effects. © 2023 Society of Chemical Industry.

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Section: Nanodevices For Microorganismsmentioning

confidence: 99%

Can nanotechnology improve the application of bioherbicides?

Pérez‐de‐Luque

2023

Pest Management Science

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“…Besides, iron-based nanomaterials remain leading materials in the nanomedicine field for theranostic approaches. 3–14…”

Section: Introductionmentioning

confidence: 99%

“…Besides, ironbased nanomaterials remain leading materials in the nanomedicine field for theranostic approaches. [3][4][5][6][7][8][9][10][11][12][13][14] One of the singularities still poorly understood regarding iron in the human body consists in its presence in a magnetic form. It has been shown since the 1990s that iron oxide nanoparticles, which are magnetic, are present in various organs such as the brain.…”

Section: Introductionmentioning

confidence: 99%

Biomineralization of magnetic nanoparticles in stem cells

Fromain,

Van de Walle,

Curé

et al. 2023

Nanoscale

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“…The last two decades have witnessed a boost of biomedical applications based on the unique properties of magnetic nanomaterials [1][2][3][4]. Magnetic single core [5] and multi-core nanoparticles [6], either bare [7] or submitted to surface functionalization [8,9], core-shell systems [10,11], supraparticles [12], hollow nanoparticles [13], nanochains [14,15] and nanodiscs [16,17] are being actively investigated in view of their application in modern therapies of precision medicine [18,19] as well as in radiation-free, non-invasive imaging or spectroscopy techniques and in the development of sensitive bionsensors [20][21][22]. A common feature of most of the above mentioned applications is that they typically make use of magnetic nanomaterials driven at high frequency in the non-linear magnetization regime [23] (the strictly linear magnetization regime, i.e.…”

Section: Introductionmentioning

confidence: 99%

From spectral analysis to hysteresis loops: a breakthrough in the optimization of magnetic nanomaterials for bioapplications

Barrera

Tiberto

2023

J. Phys. Mater.

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An innovative method is proposed to determine the most important magnetic properties of bioapplication-oriented magnetic nanomaterials exploiting the connection between hysteresis loop and frequency spectrum of magnetization. Owing to conceptual and practical simplicity, the method may result in a substantial advance in the optimization of magnetic nanomaterials for use in precision medicine. The techniques of frequency analysis of the magnetization currently applied to nanomaterials both in vitro and in vivo usually give a limited, qualitative picture of the effects of the active biological environment on magnetic tracers, and have to be complemented by direct measurement of the hysteresis loop. We show that the very same techniques can be used to convey all the information needed by present-day biomedical applications without the necessity of doing conventional magnetic measurements in the same experimental conditions. The spectral harmonics obtained analyzing the response of a magnetic tracer in frequency, as in Magnetic Particle Spectroscopy/Imaging (MPS/MPI), are demonstrated to lead to a precise reconstruction of the hysteresis loop, whose most important parameters (loop's area, magnetic remanence and coercive field) are directly obtained through transformation formulas based on simple manipulation of the harmonics amplitudes and phases.The validity of the method is experimentally verified on various magnetic nanomaterials for bioapplications submitted to ac magnetic fields of different amplitude, frequency and waveshape. In all cases, the experimental data taken in the frequency domain exactly reproduce the magnetic properties obtained from conventional magnetic measurements.

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Magneto-optical hyperthermia agents based on probiotic bacteria loaded with magnetic and gold nanoparticles

Abstract: Maghemite and prism gold nanoparticles were incorporated onto a probiotic bacterium to produce heterobimetallic systems with adequate features to act as dual agents in magnetic hyperthermia and photothermal therapy.

Cited by 12 publications

References 39 publications

Can nanotechnology improve the application of bioherbicides?

Can nanotechnology improve the application of bioherbicides?

Biomineralization of magnetic nanoparticles in stem cells

From spectral analysis to hysteresis loops: a breakthrough in the optimization of magnetic nanomaterials for bioapplications

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