TSHZ2 and breast carcinoma: To this end, we established either TSHZ2 or a control LacZ-expressing cells from a human breast cancer cell line MCF-7 (MCF-7TSHZ2 and MCF-7LacZ, respectively) and searched for genes differentially expressed between MCF-7TSHZ2 and MCF-7LacZvia expression microarray analysis.