title: Prognostic significance of matrix metalloproteinases-1, -2, -7 and -13 and tissue inhibitors of metalloproteinases-1, -2, -3 and -4 in colorectal cancer.
abstract: Strong expression of many matrix metalloproteinases (MMPs) has been related to poor survival of colorectal cancer (CRC) patients. The expression of tissue inhibitors of metalloproteinases (TIMPs) has been associated with both a beneficial and a poor outcome and there is thus a need to further clarify the significance of MMPs and TIMPs in CRC. The prognostic significance of 4 MMPs and TIMPs in CRC was evaluated. Formalin-fixed, paraffin-embedded tissue arrayed samples of 351 patients with primary colon or rectal cancer of Dukes' stages A-D were selected for immunohistochemical staining of MMP-1, -2, -7 and -13, and TIMP-1, -2, -3 and -4. High expression of MMP-2 in the malignant epithelium as well as in the surrounding stroma was associated with reduced survival of colon cancer patients. Strong epithelial and stromal cytoplasmic staining of TIMP-3 was associated with a longer survival in rectal cancer patients, and here the interobserver variation for evaluating the degree of staining was lower than for epithelial staining. Strong stromal cytoplasmic staining of TIMP-4 predicted longer survival of rectal cancer patients. Multivariate analysis showed that stromal cytoplasmic TIMP-3 staining was the only marker of independent prognostic value. MMP-2 might be a useful prognostic marker in colon cancer, and TIMP-3 and TIMP-4 in rectal cancer, but the findings associated with stromal staining should be interpreted with some caution. Different biologic behavior or different genetic development may explain the differences between colon and rectal cancers regarding the expression of MMP-2, TIMP-3 and TIMP-4.
authors: Department of Surgery, Turku University Central Hospital, Turku, Finland. marja.hilska@pp.inet.fi
authors: Marja
authors: M
authors: Hilska
authors: Peter J
authors: PJ
authors: Roberts
authors: Yrjö U
authors: YU
authors: Collan
authors: Veli Jukka O
authors: VJ
authors: Laine
authors: Jyrki
authors: J
authors: Kössi
authors: Pirkko
authors: P
authors: Hirsimäki
authors: Otto
authors: O
authors: Rahkonen
authors: Matti
authors: M
authors: Laato
mesh_terms: D014408:Biomarkers, Tumor / Q000032:analysis; D003110:Colonic Neoplasms / Q000175:diagnosis; D015179:Colorectal Neoplasms / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D020781:Matrix Metalloproteinase 1 / Q000032:analysis; D020778:Matrix Metalloproteinase 2 / Q000032:analysis; D020783:Matrix Metalloproteinase 7 / Q000032:analysis; D020782:Matrix Metalloproteinases / Q000032:analysis*; D008875:Middle Aged; D011379:Prognosis; D012004:Rectal Neoplasms / Q000175:diagnosis; D019715:Tissue Inhibitor of Metalloproteinase-1 / Q000032:analysis; D019716:Tissue Inhibitor of Metalloproteinase-2 / Q000032:analysis; D019717:Tissue Inhibitor of Metalloproteinase-3 / Q000032:analysis; D019714:Tissue Inhibitor of Metalloproteinases / Q000032:analysis*; D000097792:Tissue Inhibitor of Metalloproteinase-4
chemical_list: D014408:Biomarkers, Tumor; D020781:Matrix Metalloproteinase 1; D020778:Matrix Metalloproteinase 2; D020783:Matrix Metalloproteinase 7; D020782:Matrix Metalloproteinases; D019715:Tissue Inhibitor of Metalloproteinase-1; D019716:Tissue Inhibitor of Metalloproteinase-2; D019717:Tissue Inhibitor of Metalloproteinase-3; D019714:Tissue Inhibitor of Metalloproteinases; D000097792:Tissue Inhibitor of Metalloproteinase-4; C088390:TIMP3 protein, human