Kim M H, Albertsson P, Xue Y, Kitson R P, Nannmark U, Goldfarb R H
Department of Molecular Biology and Immunology, and Institute for Cancer Research, University of North Texas Health Science Center at Fort Worth, Texas, USA
In Vivo. 2000 Sep-Oct;14(5):557-64.
In this study, we describe rat NK cell-derived MMPs including membrane-type MMPs (MT-MMPs) and tissue inhibitors of MMP (TIMPs). RT-PCR analysis from cDNA of rat A-NK cells revealed mRNA for MMP-2, MMP-9, MMP-7, MMP-10, MMP-11, MMP-13, MT1-MMP, MT2-MMP, TIMP-1, and TIMP-2. The RNK-16 cells expressed mRNA for MMP-7, MMP-10, MMP-11, MT1-MMP, MT2-MMP, TIMP-1, and TIMP-2, in addition to MMP-3 and MMP-13. Western blot analysis confirmed proteins for MT1-MMP and MT2-MMP in RNK-16 cells. TIMP-1 in rat A-NK cells was present at molecular mass of 34-kDa protein which may represent a highly glycosylated form. Genistein, a natural isoflavone found in soybeans, inhibited proliferation of RNK-16 cells in dosage dependent manner. In addition, it down-regulated the expression of MMP-13, MT1-MMP, TIMP-1 and TIMP-2. Moreover, genistein greatly impaired the ability of RNK-16 cells to invade through a model basement membrane. This effect might be mediated by the observed down-regulation of MMP-13 and MT1-MMP.
在本研究中,我们描述了大鼠自然杀伤(NK)细胞衍生的基质金属蛋白酶(MMPs),包括膜型MMPs(MT-MMPs)和MMP组织抑制剂(TIMPs)。对大鼠A-NK细胞cDNA进行的逆转录聚合酶链反应(RT-PCR)分析显示,存在基质金属蛋白酶-2(MMP-2)、基质金属蛋白酶-9(MMP-9)、基质金属蛋白酶-7(MMP-7)、基质金属蛋白酶-10(MMP-10)、基质金属蛋白酶-11(MMP-11)、基质金属蛋白酶-13(MMP-13)、MT1-MMP、MT2-MMP、TIMP-1和TIMP-2的信使核糖核酸(mRNA)。除了MMP-3和MMP-13外,RNK-16细胞还表达MMP-7、MMP-10、MMP-11、MT1-MMP、MT2-MMP、TIMP-1和TIMP-2的mRNA。蛋白质印迹分析证实了RNK-16细胞中存在MT1-MMP和MT2-MMP蛋白。大鼠A-NK细胞中的TIMP-1以分子量为34千道尔顿的蛋白质形式存在,这可能代表一种高度糖基化的形式。染料木黄酮是大豆中发现的一种天然异黄酮,它以剂量依赖的方式抑制RNK-16细胞的增殖。此外,它下调了MMP-13、MT1-MMP、TIMP-1和TIMP-2的表达。此外,染料木黄酮极大地削弱了RNK-16细胞通过模型基底膜侵袭的能力。这种作用可能是由观察到的MMP-13和MT1-MMP的下调介导的。