Abstract
The effect of retinoid treatment of A549 human lung carcinoma cells on in vitro cell invasion using the human amnion basement membrane (BM) was investigated. A 2-day retinoid pretreatment of the cells resulted in a significant reduction in their invasive ability. The most effective retinoid, retinol acetate, inhibited cell migration through the BM and degradation of [3H] proline labeled BM components by 50% at noncytotoxic concentrations of 0.09, and 3 micrograms/ml, respectively. Inhibition by retinol acetate of A549 cell invasive potential was accompanied by a significant decrease in type IV collagenase activity and no change in transglutaminase activity.
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