Project description:Gene expression profiling reveals a potential role of Orange cells (BT-OC) in stimulating hair growth in dermal papilla cells. HFDPCs were human primary cells line, treated with 1:2000 Orange cells (BT-OC) for 48 h. Microarray gene expression profiling was conducted for three biological replicates
Project description:Gene expression profiling reveals a potential role of Green cells (BT-GC) in stimulating hair growth in dermal papilla cells. HFDPCs were human primary cells line, treated with 1:2000 Green cells (BT-GC) for 48 h. Microarray gene expression profiling was conducted for three biological replicates
Project description:Gene expression profiling reveals a potential role of APC 50% or APC 80% in stimulating hair growth in dermal papilla cells. HFDPCs were human primary cells line, treated with 5 μg/ml APC 50% for 48 h. Microarray gene expression profiling was conducted for three biological replicates HFDPCs were human primary cells line, treated with 5 μg/ml APC 80% for 48 h. Microarray gene expression profiling was conducted for three biological replicates
Project description:Gene expression profiling reveals a potential effect of minoxdil and TCQA in stimulating hair growth in 2D cultered dermal papilla cells. HFDPCs were human primary cells line, treated with 0,1 µM minoxidil and 10 µM TCQA for 48 h. Microarray gene expression profiling was conducted for three biological replicates
Project description:Gene expression profiling reveals a potential higher effect of minoxdil and TCQA in stimulating hair growth in 3D cultered dermal papilla cells. HFDPCs were human primary cells line, treated with 0,1 µM minoxidil and 10 µM TCQA for 48 h. Microarray gene expression profiling was conducted for three biological replicates
Project description:In vitro gene expression signatures to predict toxicological responses can provide mechanistic context for human health risk assessment purposes. We previously developed the TGx-28.65 genomic biomarker from a database of gene expression profiles in human TK6 cells exposed to 28 well-known compounds, and it comprises 65 genes that can classify chemicals as DNA damaging or non-DNA damaging. In this study, we applied the TGx-28.65 genomic biomarker in parallel with the in vitro micronucleus (MN) assay to determine if two chemicals of regulatory interest at Health Canada, disperse orange (DO: the orange azo dye 3-[[4-[(4-Nitrophenyl)azo]phenyl]benzylamino]propanenitrile) and 1,2,4-benzenetriol (BT: a metabolite of benzene) are genotoxic or non-genotoxic. Both chemicals caused dose-dependent declines in relative survival (RS) and increases in apoptosis. A strong significant increase in micronucleus induction was observed for all concentrations of BT; the top two concentrations of DO also caused a statistically significant increase in MN, but these increases were less than 2-fold above controls. TGx-28.65 analysis classified BT as genotoxic at all three concentrations and DO as genotoxic at the mid and high concentrations. Thus, although DO only induces a small increase in MN, this response is sufficient to induce a cellular DNA damage response that is likely relevant for risk assessment. Benchmark dose modeling revealed that BT is much more potent than DO; the BT benchmark dose for MN induction was similar to that of benzo[a]pyrene, (BaP: a genotoxic carcinogen), which was used as a positive control. The results strongly suggest that follow-up work is required to assess whether DO and BT are also genotoxic in vivo. This is particularly important for DO, which may require metabolic activation by bacterial gut flora to fully induce its genotoxic potential. Our previously published data and this proof of concept study suggest that the TGx-28.65 genomic biomarker has the potential to add significant value to existing approaches used to assess genotoxicity.
Project description:Oleocanthal (OL) and Oleacein (OC) are enriched components in Olive (oil and leaves). However, their effects on skin have not been widely studied compared to Oleuropein (OP). Here, we perfomed global gene expression profiling to screen the potential effects of OL and OC on the skin. Results showed that OL and OC have effects on skin development and keratinocyte differentiation by upregulation of key markers. Furthermore, OL and OC were effectively downregulated several melanogenic genes and it suggests that OL and OC can have a potential effect for pigmentation. B16F10 were murine melanoma cells line, treated with 5 µM of OL and OC for 24 hours. Microarray gene expression profiling was conducted technical replicates.