Project description:A Transcriptomics Approach to Study the Biocompatibility and Finding out the Potential Applications of Magnetite (Fe3O4) Nanoparticles Here in this study, we examine the molecular effects of uptake of Fe3O4 nanoparticles using a whole genome microarray study in human epithelial cancer cell line. 38 genes (55%) out of 69 downregulated genes were found to be associated with TGF-beta or BMP signaling including six genes, Id1, Id2, Id3, Caspase-9, Smad6 and SMAD7, important negative regulators of these signaling pathways involved in development and tumorigenesis.
Project description:Gene expression analysis of HeLa cell samples treated with nanoparticles for 2 or 4 hours, with matching non-treated samples as controls - exact cell culture growing conditions were replicated, same cell numbers plated in matching pairs of flasks Dopamine covered Fe3O4@TiO2 nanoparticles were added to cells grown for 16h and incubated fror 2 or 4 hours
Project description:Gold nanoparticles (Au NPs) are uniquely suited for various biomedical applications due to the combination of their optical properties with their easily functionalized surfaces. The Au NP surface can be tailored to improve biocompatibility while also attaching targeting ligands or drugs. However, information on how these tailored surface chemistries may affect cell gene expression is scarce. Using two model human cells line, human dermal fibroblasts and prostate cancer cells, microarray experiments measured gene expression over 27,000 human genes. Each of the cell lines was exposed to four related types of surface-modified Au NPs at two different concentrations, and the microarray data was analyzed by weighted gene correlation network analysis and gene functional annotation. Au NPs were shown to affect genes associated with a variety of cellular functions, and surface charge and chemistry were linked with the types of parthways changed and the degree of which those changes occured. Nanoparticle induced gene expression in PC3 and HDF cells was measured after 24 hour exposure to nanoparticles of four different surface coating types. RNA from three separate culture samples were used for each nanoparticle-cell combinations, along with three control samples not exposed to nanoparticles at all.
Project description:Gene expression profiling of immortalized human mesenchymal stem cells with hTERT/E6/E7 transfected MSCs. hTERT may change gene expression in MSCs. Goal was to determine the gene expressions of immortalized MSCs.
