For mRNA expression, the IL-6 mRNA expression level of the SCP-Se NPs group was significantly lower than that of the SCP group (p < 0.05) and all three of these inflammatory cytokines’ mRNA expression levels of the SCP-Se NPs group were back to normal, showing no significant difference with those of the BC group (p > 0.05). This evidence concerns the gene IL6 and breast cancer.