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Islam MA, Syed IM, Mamun MA, Hoque SM. Effect of particle size and composition on local magnetic hyperthermia of chitosan-Mg1-xCoxFe2O4 nanohybrid. Front Chem 2024; 12:1347423. [PMID: 38524916 PMCID: PMC10958782 DOI: 10.3389/fchem.2024.1347423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/07/2024] [Indexed: 03/26/2024] Open
Abstract
In this study, Mg1-xCoxFe2O4 (0≤x ≤ 1 with ∆x = 0.1) or MCFO nanoparticles were synthesized using a chemical co-precipitation method and annealed at 200, 400, 600, and 800°C respectively to investigate the structural properties of the materials by X-ray diffractometer (XRD), transmission electron microscopy (TEM), and Fourier-transform infrared spectroscopy (FTIR). Controlled annealing increased particle size for each value of x. The aim was to investigate how specific loss power (SLP) and maximum temperature (Tmax) during local magnetic hyperthermia were affected by structural alterations associated with particle size and composition. The lattice parameter, X-ray density, ionic radius, hopping length, bond length, cation-cation distance, and cation-anion distance increase with an increase in Co2+ content. Raman and FTIR spectroscopy reveal changes in cation distribution with Co2+ content and particle size. Magnetic properties measured by the physical property measurement system (PPMS) showed saturation magnetization (Ms), coercivity (Hc), remanent magnetization (Mr/Ms), and anisotropy constant (K1) of the Mg1-xCoxFe2O4 nanoparticles increase with Co2+ content and particle size. When exposed to an rf magnetic field, the nanohybrids experienced an increase in both the SLP (specific loss power) and Tmax (maximum temperature) as the particle size initially increased. However, these values reached their peak at critical particle size and subsequently decreased. This occurs since a modest increase in anisotropy, resulting from the presence of Co2+ and larger particle size, facilitates Néel and Brownian relaxation. However, for high anisotropy values and particle size, the Néel and Brownian relaxations are hindered, leading to the emergence of a critical size. The critical size increases as the Co2+ content decreases, but it decreases as the Co2+ content increases, a consequence of higher anisotropy with the increase in Co2+. Additionally, it is noteworthy that the maximum temperature (Tmax) rises as the concentration of nanohybrids grows, but the specific loss power (SLP) decreases. An increased concentration of chitosan-MCFO nanohybrids inhibits both the Néel and Brownian relaxation processes, reducing specific loss power.
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Affiliation(s)
- M. Aminul Islam
- Materials Science Division, Atomic Energy Centre Dhaka, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh
- Department of Physics, University of Dhaka, Dhaka, Bangladesh
- Department of Physics, Magura Govt. Mahila College, Magura, Bangladesh
| | | | - M. Al Mamun
- Materials Science Division, Atomic Energy Centre Dhaka, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh
| | - S. Manjura Hoque
- Materials Science Division, Atomic Energy Centre Dhaka, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh
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Mahendravada S, Lahiri BB, Khan F, Sathyanarayana AT, Vizhi RE, Moorthy A, Philip J. A nudge over the relaxation plateau: effect of pH, particle concentration, and medium viscosity on the AC induction heating efficiency of biocompatible chitosan-coated Fe 3O 4nanoparticles. NANOTECHNOLOGY 2024; 35:165704. [PMID: 38211331 DOI: 10.1088/1361-6528/ad1d79] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 01/11/2024] [Indexed: 01/13/2024]
Abstract
The effects of pH, MNP concentration, and medium viscosity on the magnetic fluid hyperthermia (MFH) properties of chitosan-coated superparamagnetic Fe3O4nanoparticles (MNPs) are probed here. Due to the protonation of the amide groups, the MNPs are colloidally stable at lower pH (∼2), but form aggregates at higher pH (∼8). The increased aggregate size at higher pH causes the Brownian relaxation time (τB) to increase, leading to a decrease in specific absorption rate (SAR). For colloidal conditions ensuring Brownian-dominated relaxation dynamics, an increase in MNP concentrations or medium viscosity is found to increase theτB. SAR decreases with increasing MNP concentration, whereas it exhibits a non-monotonic variation with increasing medium viscosity. Dynamic hysteresis loop-based calculations are found to be in agreement with the experimental results. The findings provide a greater understanding of the variation of SAR with the colloidal properties and show the importance of relaxation dynamics on MFH efficiency, where variations in the frequency-relaxation time product across the relaxation plateau cause significant variations in SAR. Further, thein vitrocytotoxicity studies show good bio-compatibility of the chitosan-coated Fe3O4MNPs. Higher SAR at acidic pH for bio-medically acceptable field parameters makes the bio-compatible chitosan-coated Fe3O4MNPs suitable for MFH applications.
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Affiliation(s)
- Srujana Mahendravada
- Smart Materials Section, Materials Characterization Group (MCG), Metallurgy and Materials Group (MMG), Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam, Tamil Nadu, PIN 603102, India
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai, PIN 400094, India
| | - B B Lahiri
- Smart Materials Section, Materials Characterization Group (MCG), Metallurgy and Materials Group (MMG), Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam, Tamil Nadu, PIN 603102, India
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai, PIN 400094, India
| | - Fouzia Khan
- Smart Materials Section, Materials Characterization Group (MCG), Metallurgy and Materials Group (MMG), Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam, Tamil Nadu, PIN 603102, India
| | - A T Sathyanarayana
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai, PIN 400094, India
- Low Temperature Studies Section, Condensed Matter Physics Division, Materials Science Group, IGCAR, Tamil Nadu, PIN 603102, India
| | - R Ezhil Vizhi
- Materials Research Laboratory, Centre for Functional Materials, Vellore Institute of Technology, Vellore, Tamil Nadu, PIN 632014, India
| | - Anbalagan Moorthy
- Department of Integrative Biology, School of Bio-Sciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, PIN 632014, India
| | - John Philip
- Smart Materials Section, Materials Characterization Group (MCG), Metallurgy and Materials Group (MMG), Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam, Tamil Nadu, PIN 603102, India
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai, PIN 400094, India
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Advances in the Synthesis and Application of Magnetic Ferrite Nanoparticles for Cancer Therapy. Pharmaceutics 2022; 14:pharmaceutics14050937. [PMID: 35631523 PMCID: PMC9145864 DOI: 10.3390/pharmaceutics14050937] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 04/16/2022] [Accepted: 04/20/2022] [Indexed: 12/12/2022] Open
Abstract
Cancer is among the leading causes of mortality globally, with nearly 10 million deaths in 2020. The emergence of nanotechnology has revolutionised treatment strategies in medicine, with rigorous research focusing on designing multi-functional nanoparticles (NPs) that are biocompatible, non-toxic, and target-specific. Iron-oxide-based NPs have been successfully employed in theranostics as imaging agents and drug delivery vehicles for anti-cancer treatment. Substituted iron-oxides (MFe2O4) have emerged as potential nanocarriers due to their unique and attractive properties such as size and magnetic tunability, ease of synthesis, and manipulatable properties. Current research explores their potential use in hyperthermia and as drug delivery vehicles for cancer therapy. Significantly, there are considerations in applying iron-oxide-based NPs for enhanced biocompatibility, biodegradability, colloidal stability, lowered toxicity, and more efficient and targeted delivery. This review covers iron-oxide-based NPs in cancer therapy, focusing on recent research advances in the use of ferrites. Methods for the synthesis of cubic spinel ferrites and the requirements for their considerations as potential nanocarriers in cancer therapy are discussed. The review highlights surface modifications, where functionalisation with specific biomolecules can deliver better efficiency. Finally, the challenges and solutions for the use of ferrites in cancer therapy are summarised.
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Islam MA, Hasan MR, Haque MM, Rashid R, Syed IM, Hoque SM. Efficacy of surface-functionalized Mg 1−xCo xFe 2O 4 (0 ≤ x ≤ 1; Δ x = 0.1) for hyperthermia and in vivo MR imaging as a contrast agent. RSC Adv 2022; 12:7835-7849. [PMID: 35424744 PMCID: PMC8982169 DOI: 10.1039/d2ra00768a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 02/10/2022] [Indexed: 12/31/2022] Open
Abstract
Surface-functionalized Mg1−xCoxFe2O4 (0 ≤ x ≤ 1; Δx = 0.1) can be an exciting candidate as an MRI contrast agent and for thermotherapeutic applications.
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Affiliation(s)
- M. Aminul Islam
- Materials Science Division, Atomic Energy Centre Dhaka, Bangladesh Atomic Energy Commission, 1000, Dhaka, Bangladesh
- Magura Govt. Mahila College, Magura, Bangladesh
- Department of Physics, University of Dhaka, Bangladesh
| | - M. Razibul Hasan
- Materials Science Division, Atomic Energy Centre Dhaka, Bangladesh Atomic Energy Commission, 1000, Dhaka, Bangladesh
| | - M. Mahbubabl Haque
- Materials Science Division, Atomic Energy Centre Dhaka, Bangladesh Atomic Energy Commission, 1000, Dhaka, Bangladesh
| | - Rimi Rashid
- Materials Science Division, Atomic Energy Centre Dhaka, Bangladesh Atomic Energy Commission, 1000, Dhaka, Bangladesh
| | | | - S. Manjura Hoque
- Materials Science Division, Atomic Energy Centre Dhaka, Bangladesh Atomic Energy Commission, 1000, Dhaka, Bangladesh
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