SLPI facilitates cell migration by regulating lamellipodia/ruffles and desmosomes, in which Galectin4 plays an important role.

Yusuke Mizutani, Daisuke Omagari, Manabu Hayatsu, Masaaki Nameta, Kazuo Komiyama, Yoshikazu Mikami, Tatsuo Ushiki

Cell adhesion & migration 2020 Dec

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To elucidate the underlying mechanism of secretory leukocyte protease inhibitor (SLPI)-induced cell migration, we compared SLPI-deleted human gingival carcinoma Ca9-22 (ΔSLPI) cells and original (wild-type: wt) Ca9-22 cells using several microscopic imaging methods and gene expression analysis. Our results indicated reduced migration of ΔSLPI cells compared to wtCa9-22 cells. The lamellipodia/dorsal ruffles were smaller and moved slower in ΔSLPI cells compared to wtCa9-22 cells. Furthermore, well-developed intermediate filament bundles were observed at the desmosome junction of ΔSLPI cells. In addition, Galectin4 was strongly expressed in ΔSLPI cells, and its forced expression suppressed migration of wtCa9-22 cells. Taken together, SLPI facilitates cell migration by regulating lamellipodia/ruffles and desmosomes, in which Galectin4 plays an important role.

Citation

Yusuke Mizutani, Daisuke Omagari, Manabu Hayatsu, Masaaki Nameta, Kazuo Komiyama, Yoshikazu Mikami, Tatsuo Ushiki. SLPI facilitates cell migration by regulating lamellipodia/ruffles and desmosomes, in which Galectin4 plays an important role. Cell adhesion & migration. 2020 Dec;14(1):195-203