%0 Journal Article %A Chatterjee, Amitava %A Mitra, Aparna %A Ray, Subrata %A Chattopadhyay, Nibedita %A Siddiqi, Maqsood %D 2003 %I Begell House %N 1 %P 10 %R 10.1615/JEnvPathToxOncol.v22.i1.50 %T Curcumin Exhibits Antimetastatic Properties by Modulating Integrin Receptors, Collagenase Activity, and Expression of Nm23 and E-Cadherin %U https://www.dl.begellhouse.com/journals/0ff459a57a4c08d0,627e587c0fab7fb1,28841d667c553ec9.html %V 22 %X Curcumin (diferuloyl methane), the major pigment from the rhizome of Curcuma longa L., has been widely studied for its tumor-inhibiting properties. Recent studies indicate that curcumin can modify cell receptor binding; it also affects intracellular signaling reactions. Curcumin-treated B16F10 melanoma cells formed eight-fold fewer lung metastases in C57BL6 mice. In the cell adhesion assays, curcumin-treated cells showed a dose-dependent reduction in their binding to four extracellular matrix (ECM) proteins. The binding to fibronectin, vitronectin, and collagen IV decreased by over 50% in 24 hours, and by 100% after 48 hours of curcumin treatment; it persisted at this level even after 15 days of cultivating cells in curcumin-free medium. Curcumin-treated cells showed a marked reduction in the expression of a5b1 and avb3 integrin receptors. In addition, curcumin treatment inhibited pp125 focal adhesion kinase (FAK), tyrosine phosphorylation of a 120 kD protein, and collagenase activity. Curcumin enhances the expression of antimetastatic proteins, tissue inhibitor metalloproteinase (TIMP)-2, nonmetastatic gene 23 (Nm23), and E-cadherin. In this article we report on the effect of curcumin on the expression of integrin, TIMP-2, Nm23, E-cadherin, adhesion, and metalloproteinase activity. %8 2003-03-01