Issue 4, 2017

In vitro delivery of calcium ions by nanogated mesoporous silica nanoparticles to induce cancer cellular apoptosis

Abstract

A pH-operated nanogate on mesoporous silica nanoparticles (MSNs) capable of simultaneous dual-cargo delivery of both metal ions and organic cargo molecules was used to deliver both Hoechst 33342 nuclear stain and calcium ions to MiaPaCa-2 cancer cells. Delivery of calcium to the cell cytoplasm to induce cellular death is an attractive alternative to using traditional, more hazardous chemotherapy drugs. Treatment of cancer cells with Hoechst-loaded, calcium-latched nanogate-modified MSNs resulted in the autonomous release of both cargo types, as visualized by cell nuclei staining and calcium-induced apoptosis. Apoptosis was confirmed by observation of nuclear fragmentation, chromatin condensation, and western blotting for cleaved caspase-3.

Graphical abstract: In vitro delivery of calcium ions by nanogated mesoporous silica nanoparticles to induce cancer cellular apoptosis

Supplementary files

Article information

Article type
Paper
Submitted
10 มิ.ย. 2560
Accepted
07 ส.ค. 2560
First published
07 ส.ค. 2560

Mol. Syst. Des. Eng., 2017,2, 384-392

In vitro delivery of calcium ions by nanogated mesoporous silica nanoparticles to induce cancer cellular apoptosis

D. Tarn, C. Yu, J. Lu, A. Hartz, F. Tamanoi and J. I. Zink, Mol. Syst. Des. Eng., 2017, 2, 384 DOI: 10.1039/C7ME00046D

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