Soluble syndecan-1 ectodomain promotes cell invasion in vitro.

Cells were placed on the surface of gels composed of type I collagen and allowed to invade for 48 hours. The percentage of invasive cells was calculated after determining the number of cells on the gel surface and the number of cells that had invaded the gel. Data are shown for the 2 soluble syndecan-1 clones (clones 2 and 10) and represent the means of quadruplicate wells ± SE. *P < .01 for neo versus sSyn-1.2 and neo versus sSyn-1.10.