Monem Ahmed Sultan, Ghannam Magdy Mohamed, ElBaz Toka Ashraf, Fahmy Heba Mohamed
Department of Biophysics, Faculty of Science, Cairo University, Giza, Egypt.
Department of Biophysics, Faculty of Science, Cairo University, Giza, Egypt.
Biochem Biophys Res Commun. 2025 Jul 30;772:152016. doi: 10.1016/j.bbrc.2025.152016. Epub 2025 May 17.
This study examines and evaluates the potential lethality of the highly mobile phospholipid bilayer of magnetoliposomes (MNLPS). Ferrous oxide nanoparticles (MNPs) measuring less than 20 nm in diameter were synthesized and enclosed within liposomes made of single and mixed phospholipids, yielding liposomes with diameters of approximately 200 nm. The physical attributes of the MNPs, including magnetic susceptibility, Zeta potential, size distribution, optical anisotropy spectrum, and nonlinear optical properties, were carefully measured. The liposomes were synthesized via the rotary evaporation method and contained a significant concentration of MNPs. The size distribution and Zeta potential of the magnetoliposomes (MNLPS) were examined using dynamic light scattering (DLS) and transmission electron microscopy (TEM). The gel-to-liquid crystalline transition characteristics of the ML were examined utilizing differential scanning calorimetry (DSC) and depolarized light scattering. The nonlinear optical spectra of the MNP and ML were analyzed below and above their primary transition temperature. The potential cytotoxicity of the ML against human breast cancer cells (MCF-7) was examined with and without a rotating magnetic field. This work successfully produced liposome-encapsulated magnetic nanoparticles using alternating magnetic field therapy for potential cancer cell eradication. The DLS, Zeta potential, and TEM analyses validated the suitable particle size distribution. The magnetic susceptibility measurements verified that the magnetic properties of the liposome-encapsulated magnetic nanoparticles fall within the permitted range. Consequently, magnetoliposomes subjected to a highly mobile alternating magnetic field are advocated as a therapeutic agent for cancer treatment, showing potential in vitro efficacy. The findings of our MTT assay show that MNLPS may show improved efficacy when subjected to magnetic field irradiation. Treatment of MCF-7 breast cancer cells with MNLPS, followed by magnetic field irradiation, significantly exhibited enhanced toxicity. The increased cytotoxicity of the combination therapy against cancer cells is due to membrane permeability, improved intracellular uptake of magnetoliposomes, and hyperthermia. Additional research is necessary to determine the optimal doses of MNLPS, intensity, duration of exposure, mobility, setup of the magnetic field, and type for magnetic field application.
本研究考察并评估了磁脂质体(MNLPS)高度可移动磷脂双层的潜在致死性。合成了直径小于20nm的氧化亚铁纳米颗粒(MNPs),并将其包裹在由单一磷脂和混合磷脂制成的脂质体内,得到直径约为200nm的脂质体。仔细测量了MNPs的物理属性,包括磁化率、zeta电位、尺寸分布、光学各向异性光谱和非线性光学性质。脂质体通过旋转蒸发法合成,含有高浓度的MNPs。使用动态光散射(DLS)和透射电子显微镜(TEM)检测磁脂质体(MNLPS)的尺寸分布和zeta电位。利用差示扫描量热法(DSC)和去偏振光散射检测磁脂质体(ML)的凝胶-液晶转变特性。在其主要转变温度上下分析了MNP和ML的非线性光学光谱。考察了有旋转磁场和无旋转磁场时ML对人乳腺癌细胞(MCF-7)的潜在细胞毒性。本研究成功地利用交变磁场疗法制备了脂质体包裹的磁性纳米颗粒,用于潜在的癌细胞根除。DLS、zeta电位和TEM分析验证了合适的粒径分布。磁化率测量证实脂质体包裹的磁性纳米颗粒的磁性在允许范围内。因此,提倡将受到高度可移动交变磁场作用的磁脂质体作为癌症治疗的治疗剂,显示出潜在的体外疗效。我们的MTT试验结果表明,MNLPS在受到磁场照射时可能显示出更高的疗效。用MNLPS处理MCF-7乳腺癌细胞,然后进行磁场照射,显著表现出增强的毒性。联合疗法对癌细胞细胞毒性增加是由于膜通透性、磁脂质体细胞内摄取改善和热疗。需要进一步研究以确定MNLPS的最佳剂量、强度、暴露持续时间、移动性、磁场设置和磁场应用类型。