Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1926346 | Archives of Biochemistry and Biophysics | 2009 | 6 Pages |
Abstract
We reported previously that translationally controlled tumor protein (TCTP) is a cytoplasmic repressor of Na,K-ATPase in HeLa cells. In the current study, we showed that TCTP overexpression using adenovirus as vehicle, induced partial inhibition of Na,K-ATPase; phosphorylation of EGFR tyrosine residues 845, 992, 1068, and 1148; activation of Ras/Raf/ERK pathway; activation of PI3K/Akt pathway; and phosphorylation of PLC-γ in HeLa cells. Specific inhibition of PI3K/Akt pathway in contrast to the inhibition of ERK, significantly decreased TCTP overexpression-induced survival signal. Inhibition of PLC-γ pathway significantly decreased TCTP overexpression-induced cell migration but inhibition of ERK had less effect. These results suggest that TCTP plays a key physiological role in cell survival through Akt pathway and migration through PLC-γ pathway.
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Authors
Moonhee Kim, Jaehoon Jung, Kyunglim Lee,