Gene silencing of the pro-inflammatory cytokine TNF-α with siRNA delivered by calcium phosphate nanoparticles, quantified by different methods
Journal of Materials Chemistry B, ISSN: 2050-750X, Vol: 3, Issue: 36, Page: 7186-7193
2015
- 25Citations
- 24Captures
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Metrics Details
- Citations25
- Citation Indexes25
- CrossRef25
- 22
- Captures24
- Readers24
- 24
Article Description
The pro-inflammatory cytokine TNF-α was silenced by treating MODE-K cells with triple-shell calcium phosphate nanoparticles. These consisted of a core of calcium phosphate, followed by a shell of siRNA, then a shell of calcium phosphate to protect the siRNA from nucleases and finally a shell of poly(ethyleneimine) for colloidal stabilization and to give the particles a positive charge. First, the gene silencing efficiency was demonstrated with HeLa-eGFP cells and determined by manually counting the green fluorescent cells, by quantitative FACS analysis of the green fluorescence per cell, and by qPCR at the RNA level. Cell counting gave the highest degrees of eGFP expression, but FACS and qPCR gave more accurate data as they are not probing the cell colour (green or not green) only as yes/no property. This was transposed to the inflammatory relevant mouse cell line MODE-K that was previously stimulated with LPS to induce the expression of TNF-α. By application of the nanoparticles, the TNF-α expression was reduced almost to the original level, as shown by qPCR. Thus, calcium phosphate nanoparticles are well suited to reduce inflammatory reactions by silencing the corresponding cytokines, e.g. TNF-α.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84941299584&origin=inward; http://dx.doi.org/10.1039/c5tb01377a; http://www.ncbi.nlm.nih.gov/pubmed/32262825; https://xlink.rsc.org/?DOI=C5TB01377A; http://xlink.rsc.org/?DOI=C5TB01377A; http://pubs.rsc.org/en/content/articlepdf/2015/TB/C5TB01377A; https://dx.doi.org/10.1039/c5tb01377a; https://pubs.rsc.org/en/content/articlelanding/2015/tb/c5tb01377a
Royal Society of Chemistry (RSC)
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