Editor-in-Chief: Brüne, Bernhard
Editorial Board: Buchner, Johannes / Lei, Ming / Ludwig, Stephan / Thomas, Douglas D. / Turk, Boris / Wittinghofer, Alfred
IMPACT FACTOR 2018: 3.014
5-year IMPACT FACTOR: 3.162
CiteScore 2018: 3.09
SCImago Journal Rank (SJR) 2018: 1.482
Source Normalized Impact per Paper (SNIP) 2018: 0.820
Plasmin Produces an E-Cadherin Fragment That Stimulates Cancer Cell Invasion
Matrix metalloproteases from the cell surface cleave an 80 kDa Ecadherin fragment (sECAD) that induces invasion of cancer cells into collagen type I and inhibits cellular aggregation. Conditioned media from MDCKts.srcCl2 cells at 40 C and 35 C, PCm.src5 and COLO-16 cells at 37 C contained spontaneously released sECAD; these 48 h old conditioned media were capable of inhibiting Ecadherin functions in a paracrine way. Here we show direct cleavage of the extracellular domain of Ecadherin by the serine protease plasmin. sECAD released by plasmin inhibits Ecadherin functions as evidenced by induction of invasion into collagen type I and inhibition of cellular aggregation. This functional inhibition by sECAD was reversed by aprotinin or by immunoadsorption on protein Sepharose 4 fast flow beads with antibodies against the extracellular part of Ecadherin. Our results demonstrate that plasmin produces extracellular Ecadherin fragments which regulate Ecadherin function in cells containing an intact Ecadherin/ catenin complex.
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