MICA and breast cancer: It was essential to investigate the impact of MQG on miR-155 and miR-146a targets of MICA, known to be markedly downregulated in MDA MB-231 cells, and vital immune-inhibitory cytokines (tumour necrosis factor–α, interleukin-10), which are known to play a dominant role in potentiation of the immune suppressive microenvironment in BC patients [68].