S1.  Overexpression of metallothionein 2 in the non-adherent splenic cells 24 h after the transfection of Mus musculus Mt2 cDNA. SSC versus Myc-Mt2 dot plot showing the transfected cells expressing recombinant metallothionein 2. Reactive oxygen species (ROS) in NK cells were measured using 2′,7′-dichlorofluorescin diacetate (DCFH-DA) as proposed by Jyothi and Khar (1999), with modifications. Non-adherent splenic cells were isolated from selleck a group of 6 untreated mice and treated

in vitro as outlined above, but with different time intervals 15, 30, 60 and 120 min. These cells were adjusted to 1 × 106 cells/well and DCFH-DA (Sigma) was added to the cultures at a final concentration of 60 μM and the cells were then incubated at 37 °C for 30 min. The cells were then washed in PBS at 4 °C (5 min, 2000 rpm) and incubated with 0.5 μl Mouse

BD Fc Block for 5 min (to block the Fc-mediated adherence of antibodies) prior to staining with specific antibodies. The click here cells were then stained (simultaneously) for surface antigens (CD3 and NK1.1) for 30 min at 4 °C in the dark. Finally, the cells were washed free of unbound antibody and resuspended in PBS at 4 °C for flow cytometry using a FACSCalibur™ flow cytometer equipped with Cell Quest Pro® software (Becton Dickinson [BD] Immunocytometry System). A total of 100,000 target cells were collected by the flow cytometer, and the results were expressed as the mean fluorescence intensity (MFI). Data analyses were performed using FlowJo 7.6.4® software (Tree Star Inc., Ashland, KY). The probe-level data from the gene expression microarray experiments were preprocessed using log2 transformation to mitigate the significant

differences between them, preserving the small intensity variations and to soften the noise inherent in the data acquisition process. Next, box plots were used to verify the distribution of the data, and we observed that animals Co1 Casein kinase 1 and Pt4 presented with many outliers. We substituted data from these mice with the mean of other mice from the same treatment group. Gene expression analysis was performed as previously described by Cui and Churchill (2003); thus, Student’s t-tests were used to compared expression data between Pt-treated and Co mice, Se-treated and Co mice and PtSe-treated and Co mice. The p values for all comparisons were adjusted using a false discovery rate (FDR). A fold change of ±2.0 and an FDR corrected p value < 0.05 (FDR < 0.05) were used as the criteria for determining statistical significance using the Matlab’s Bioinformatics Toolbox (http://www.mathworks.com/products/bioinfo/description3.html). The gene expression data have been deposited in the National Center for Biotechnology Information Gene Expression Omnibus (http://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE30629). The statistically significant transcripts from all comparisons were uploaded to the Database for Annotation, Visualization and Integrated Discovery (DAVID) Bioinformatics Resource (http://david.abcc.