Nanostructured Pt(NH(3))(4)Cl(2)/SiO(2) for nanomedicine: catalytic degradation of DNA in cancer cells.

Tessy López, Emma Ortíz Islas, Mayra A Alvarez Lemus, Richard Donald González
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引用次数: 5

Abstract

In vivo suppression of glioblastoma multiforme (GBM) in Wistar rats using silica-shelled biocatalytic Pt(NH(3))(4)Cl(2) nanoparticles is reported. These nanoparticles were synthesized by a sol-gel technique and characterized by SEM and HRTEM imaging. We confirmed morphological uniformity (30 nm) and surface acidity of the nanoparticles, respectively, by TEM imaging and FTIR spectral analysis. Interestingly, treatment of Wistar rats intraperitoneally inoculated with C(6) cells using the biocatalysts resulted in considerable tumor shrinkage. Efficiency of the biocatalyst to shrink a tumor is superior to that by the commercial cytotoxic agent cisplatin. The tumor suppression property of Pt(NH(3))(4)Cl(2) nanoparticles is attributed to catalytic damage of DNA in C(6) cells.

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Abstract Image

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纳米结构Pt(NH(3))(4)Cl(2)/SiO(2)用于纳米医学:癌细胞中DNA的催化降解。
报道了硅壳生物催化剂Pt(nh3)(4)Cl(2)纳米颗粒对Wistar大鼠多形性胶质母细胞瘤(GBM)的体内抑制作用。采用溶胶-凝胶法合成了这些纳米颗粒,并通过扫描电镜和HRTEM成像对其进行了表征。我们通过TEM成像和FTIR光谱分析分别证实了纳米颗粒的形态均匀性(30 nm)和表面酸度。有趣的是,使用生物催化剂对Wistar大鼠腹腔接种C(6)细胞治疗后,肿瘤显著缩小。生物催化剂缩小肿瘤的效率优于市售的细胞毒性药物顺铂。Pt(NH(3))(4)Cl(2)纳米颗粒的抑瘤特性归因于对C(6)细胞DNA的催化损伤。
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