More importantly, TIMP-1 and CD90 were positively correlated in breast cancer (<i>r</i><sup>2</sup> = 0.6079; <i>P</i> < 0.001) and associated with poor prognosis of patients.
Therefore, our results reveal that CD90 is involved with malignant transformation in breast cancer cell lines and is correlated with metastasis and poor patient survival in the basal-like subtype, being considered as a promising new breast cancer target.
Moreover, using the surface markers of CD105 and CD90 for the identification of MSCs might provide new theoretical basis for the recurrence and metastasis of breast cancer.