Magnetite nanoparticles functionalized with α-tocopheryl succinate (α-TOS) promote selective cervical cancer cell death
Source abstract
Abstract
The vitamin E analog α-tocopheryl succinate (α-TOS) selectively induces apoptosis in several cancer cells, but it is sensitive to esterases present in cervical cancer cells. Magnetite nanoparticles (Nps) were prepared by a reduction–coprecipitation method; their surface was silanized and conjugated to α-TOS to enhance its resistance. Morphology, size, and crystal structure were analyzed by scanning electron microscopy, transmission electron microscopy, and selected area electron diffraction. Chemical composition was analyzed by energy-dispersive X-ray spectroscopy; functional groups were determined by Fourier transform infrared spectroscopy; and α-TOS content was estimated by thermogravimetric analysis. The cytotoxic activity of α-TOS-Nps was evaluated in non-malignant fibroblasts and cervical cancer cells by means of the colorimetric MTT viability test. Intracellular localization was identified by confocal laser scanning microscopy. Characterization of α-TOS-Nps revealed sphere-like Nps with 15 nm average size, formed by mineral and organic constituents with high stability. α-TOS-Nps were internalized in the nucleus and selectively affected the viability of cervical cancer cells in a dose- and time-dependent manner but were biocompatible with non-malignant fibroblasts. In conclusion, functionalization of magnetite Nps protected the cytotoxic activity of α-TOS in non-sensitive cervical cancer cells.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nanoparticle-Based Drug Delivery · Iron oxide chemistry and applications · Nanoparticles: synthesis and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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