... stroma 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 of breast carcinomas correlates with tumour recurrence Int J Cancer Res 58, 1–6 Lijnen, H.R (2002) Matrix metalloproteinases and cellular ... abrogate the invasion stimulating effects of plasminogen upon MDA-MB- 231 cells, confirming dependence upon plasmin activity [14] MMP -3 inhibition of MDA-MB- 231 invasion in the presence of plasminogen ... considered significant at P £ 0.05 RESULTS Inhibition of MDA-MB- 231 invasion by MMP -3 Human MDA-MB- 231 breast cancer cells constitutively express, MMP-9, low level MMP -3, TIMP-1, TIMP-2, uPA and t-PA but...