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    Cancer Res. 1998 Mar 1;58(5):1048-51.

    Reduced angiogenesis and tumor progression in gelatinase A-deficient mice.

    Itoh T, Tanioka M, Yoshida H, Yoshioka T, Nishimoto H, Itohara S.

    Source

    Shionogi Institute for Medical Science, Shionogi & Co., Ltd., Osaka, Japan. takeshi.itoh@shionogi.co.jp

    Abstract

    Matrix proteolysis is thought to play a crucial role in several stages of tumor progression, including angiogenesis, and the invasion and metastasis of tumor cells. We investigated the specific role of gelatinase A (matrix metalloproteinase 2) on these events using gelatinase A-deficient mice. In these mice, tumor-induced angiogenesis was suppressed according to dorsal air sac assay. When B16-BL6 melanoma cells or Lewis lung carcinoma cells were implanted intradermally, the tumor volumes at 3 weeks after implantation in the gelatinase A-deficient mice decreased by 39% for B16-BL6 melanoma and by 24% for Lewis lung carcinoma (P < 0.03 for each tumor). The number of lung colonies of i.v. injections fell by 54% for B16-BL6 melanoma and 77% for Lewis lung carcinoma (P < 0.014 and P < 0.0015, respectively). These results indicated that host-derived gelatinase A plays an important role in angiogenesis and tumor progression, suggesting the usefulness of gelatinase A inhibitors for anticancer chemotherapy.

    PMID:
    9500469
    [PubMed - indexed for MEDLINE]
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