Fig. 1.

HDAC inhibition induces changes in SW13 morphology, proliferation, and MMP activity. (A) Treatment with 1 nM FK228 significantly impacts SW13 cell morphology and actin (green) organization. (B and C) FK228 treatment decreases proliferation by nearly 90% as determined by the lower number of EdU positive cells (green) per total number of cells indicated by DAPI staining (blue). (D and E) FK228 treated cells exhibit higher levels of MMP2/9 (collagenase) activity as measured by increased fluorescence after incubation with a fluorescein-quenched gelatin substrate (DQ gel; green). Scale bars represent 10 μm