Figure 2.
The effect of dietary LA on the invasion ability of OCUM-2MD3 cells through Matrigel. (A) Growth of OCUM-2MD3 cell lines after LA treatment. As described in the Materials and methods section, the number of viable OCUM-2MD3 cells with or without 30 μM of LA treatment for the indicated time period was determined. (B) Apoptosis induction by LA. Upper panel: the typical examples of flowcytometic analysis in OCUM-2MD3 cells treated with vehicle (ethanol); apoptosis rate was 0.9%. Lower panel: analysis of cells treated with 30 μM of LA; apoptosis rate was 0.0%. (C) Cells were treated for 45 min with vehicle (ethanol) or the indicated concentration of LA. Invasion across Matrigel-coated membranes was assessed after 72 h. a: Different from 0 μM LA (P<0.01). b: Different from 3 and 10 μM LA (P<0.05). (D) Cells were treated with ethanol (dotted line) or 30 μM LA (solid line) and allowed to invade for the indicated time periods. a: Different from the ethanol-treated sample at the same time (P<0.05). (E) OCUM-12, NUGC3 and MKN-45 cells were treated with ethanol (dotted line) or 30 μM LA (solid line). Invasion across Matrigel-coated membranes was assessed after 72 h. a: Different from 0 μM LA (P<0.01). Values shown are mean±s.d. (n=4).