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Souiade L, Domingo-Diez J, Alcaide C, Gámez B, Gámez L, Ramos M, Serrano Olmedo JJ. Improving the Efficacy of Magnetic Nanoparticle-Mediated Hyperthermia Using Trapezoidal Pulsed Electromagnetic Fields as an In Vitro Anticancer Treatment in Melanoma and Glioblastoma Multiforme Cell Lines. Int J Mol Sci 2023; 24:15933. [PMID: 37958913 PMCID: PMC10648011 DOI: 10.3390/ijms242115933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 10/25/2023] [Accepted: 10/31/2023] [Indexed: 11/15/2023] Open
Abstract
Magnetic hyperthermia (MHT) is an oncological therapy that uses magnetic nanoparticles (MNPs) to generate localized heat under a low-frequency alternating magnetic field (AMF). Recently, trapezoidal pulsed alternating magnetic fields (TPAMFs) have proven their efficacy in enhancing the efficiency of heating in MHT as compared to the sinusoidal one. Our study aims to compare the TPAMF waveform's killing effect against the sinusoidal waveform in B16F10 and CT2A cell lines to determine more efficient waveforms in causing cell death. For that purpose, we used MNPs and different AMF waveforms: trapezoidal (TP), almost-square (TS), triangular (TR), and sinusoidal signal (SN). MNPs at 1 and 4 mg/mL did not affect cell viability during treatment. The exposition of B16F10 and CT2A cells to only AMF showed nonsignificant mortality. Hence, the synergetic effect of the AMF and MNPs causes the observed cell death. Among the explored cases, the nonharmonic signals demonstrated better efficacy than the SN one as an MHT treatment. This study has revealed that the application of TP, TS, or TR waveforms is more efficient and has considerable capability to increase cancer cell death compared to the traditional sinusoidal treatment. Overall, we can conclude that the application of nonharmonic signals enhances MHT treatment efficiency against tumor cells.
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Affiliation(s)
- Lilia Souiade
- Center for Biomedical Technology (CTB), Universidad Politécnica de Madrid (UPM), 28040 Madrid, Spain; (L.S.); (J.D.-D.); (C.A.); (M.R.)
| | - Javier Domingo-Diez
- Center for Biomedical Technology (CTB), Universidad Politécnica de Madrid (UPM), 28040 Madrid, Spain; (L.S.); (J.D.-D.); (C.A.); (M.R.)
| | - Cesar Alcaide
- Center for Biomedical Technology (CTB), Universidad Politécnica de Madrid (UPM), 28040 Madrid, Spain; (L.S.); (J.D.-D.); (C.A.); (M.R.)
| | - Berta Gámez
- Escula Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, 28006 Madrid, Spain; (B.G.); (L.G.)
| | - Linarejos Gámez
- Escula Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, 28006 Madrid, Spain; (B.G.); (L.G.)
| | - Milagros Ramos
- Center for Biomedical Technology (CTB), Universidad Politécnica de Madrid (UPM), 28040 Madrid, Spain; (L.S.); (J.D.-D.); (C.A.); (M.R.)
- Centro de Investigación Biomédica en Red para Bioingeniería, Biomateriales y Nanomedicina, Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - José Javier Serrano Olmedo
- Center for Biomedical Technology (CTB), Universidad Politécnica de Madrid (UPM), 28040 Madrid, Spain; (L.S.); (J.D.-D.); (C.A.); (M.R.)
- Centro de Investigación Biomédica en Red para Bioingeniería, Biomateriales y Nanomedicina, Instituto de Salud Carlos III, 28029 Madrid, Spain
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Zeinoun M, Domingo-Diez J, Rodriguez-Garcia M, Garcia O, Vasic M, Ramos M, Serrano Olmedo JJ. Enhancing Magnetic Hyperthermia Nanoparticle Heating Efficiency with Non-Sinusoidal Alternating Magnetic Field Waveforms. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:3240. [PMID: 34947589 PMCID: PMC8704388 DOI: 10.3390/nano11123240] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 11/01/2021] [Accepted: 11/26/2021] [Indexed: 01/23/2023]
Abstract
For decades now, conventional sinusoidal signals have been exclusively used in magnetic hyperthermia as the only alternating magnetic field waveform to excite magnetic nanoparticles. However, there are no theoretical nor experimental reasons that prevent the use of different waveforms. The only justifiable motive behind using the sinusoidal signal is its availability and the facility to produce it. Following the development of a configurable alternating magnetic field generator, we aim to study the effect of various waveforms on the heat production effectiveness of magnetic nanoparticles, seeking to prove that signals with more significant slope values, such as the trapezoidal and almost-square signals, allow the nanoparticles to reach higher efficiency in heat generation. Furthermore, we seek to point out that the nanoparticle power dissipation is dependent on the waveform's slope and not only the frequency, magnetic field intensity and the nanoparticle size. The experimental results showed a remarkably higher heat production performance of the nanoparticles when exposed to trapezoidal and almost-square signals than conventional sinusoidal signals. We conclude that the nanoparticles respond better to the trapezoidal and almost-square signals. On the other hand, the experimental results were used to calculate the normalized power dissipation value and prove its dependency on the slope. However, adjustments are necessary to the coil before proceeding with in vitro and in vivo studies to handle the magnetic fields required.
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Affiliation(s)
- Michael Zeinoun
- Center for Biomedical Technology (CTB), Universidad Politécnica de Madrid (UPM), Campus Montegancedo, 28233 Madrid, Spain; (J.D.-D.); (M.R.-G.); (M.R.)
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - Javier Domingo-Diez
- Center for Biomedical Technology (CTB), Universidad Politécnica de Madrid (UPM), Campus Montegancedo, 28233 Madrid, Spain; (J.D.-D.); (M.R.-G.); (M.R.)
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - Miguel Rodriguez-Garcia
- Center for Biomedical Technology (CTB), Universidad Politécnica de Madrid (UPM), Campus Montegancedo, 28233 Madrid, Spain; (J.D.-D.); (M.R.-G.); (M.R.)
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - Oscar Garcia
- Centro de Electrónica Industrial, Universidad Politécnica de Madrid (UPM), 28006 Madrid, Spain; (O.G.); (M.V.)
| | - Miroslav Vasic
- Centro de Electrónica Industrial, Universidad Politécnica de Madrid (UPM), 28006 Madrid, Spain; (O.G.); (M.V.)
| | - Milagros Ramos
- Center for Biomedical Technology (CTB), Universidad Politécnica de Madrid (UPM), Campus Montegancedo, 28233 Madrid, Spain; (J.D.-D.); (M.R.-G.); (M.R.)
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - José Javier Serrano Olmedo
- Center for Biomedical Technology (CTB), Universidad Politécnica de Madrid (UPM), Campus Montegancedo, 28233 Madrid, Spain; (J.D.-D.); (M.R.-G.); (M.R.)
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
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Barrera G, Allia P, Tiberto P. Dipolar interactions among magnetite nanoparticles for magnetic hyperthermia: a rate-equation approach. NANOSCALE 2021; 13:4103-4121. [PMID: 33570053 DOI: 10.1039/d0nr07397k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Rate equations are used to study the dynamic magnetic properties of interacting magnetite nanoparticles viewed as double well systems (DWS) subjected to a driving field in the radio-frequency range. Dipole-dipole interaction among particles is modeled by inserting an ad-hoc term in the energy barrier to simulate the dependence of the interaction on both the interparticle distance and degree of dipole collinearity. The effective magnetic power released by an assembly of interacting nanoparticles dispersed in a diamagnetic host is shown to be a complex function of nanoparticle diameter, mean particle interdistance and frequency. Dipolar interaction markedly modifies the way a host material is heated by an assembly of embedded nanoparticles in magnetic hyperthermia treatments. Nanoparticle fraction and strength of the interaction can dramatically influence the amplitude and shape of the heating curves of the host material; the heating ability of interacting nanoparticles is shown to be either improved or reduced by their concentration in the host material. A frequency-dependent cut-off length of dipolar interactions is determined and explained. Particle polydispersity entailing a distribution of particle sizes brings about non-trivial effects on the heating curves depending on the strength of dipolar interaction.
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Affiliation(s)
- Gabriele Barrera
- INRIM, Advanced Materials Metrology and Life Sciences, Strada delle Cacce 91, I-10135 Torino, Italy.
| | - Paolo Allia
- INRIM, Advanced Materials Metrology and Life Sciences, Strada delle Cacce 91, I-10135 Torino, Italy.
| | - Paola Tiberto
- INRIM, Advanced Materials Metrology and Life Sciences, Strada delle Cacce 91, I-10135 Torino, Italy.
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