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Published on: May 19, 2016
O-GlcNAcylation regulates lysophosphatidic acid-induced cell migration by regulating ERM family proteins
Minseok Song1, Pann-Ghill Suh2
1Department of Life Sciences, Yeungnam University, Gyeongsan, South Korea.
Abstract:
O-GlcNAcylation of intracellular proteins (O-GlcNAc) is a post-translational modification that often competes with phosphorylation in diverse cellular signaling pathways. Recent studies on human malignant tumors have demonstrated that O-GlcNAc is implicated in cellular features relevant to metastasis. Here, we report that lysophosphatidic acid (LPA)-induced ovarian cancer cell (OVCAR-3) migration is regulated by O-GlcNAc. We found that O-GlcNAc modification of ERM family proteins, a membrane-cytoskeletal crosslinker, was inversely correlated with its phosphorylation status. Moreover, the LPA-induced formation of membrane protrusion structures, as well as the migration of OVCAR-3 cells, was reduced by the accumulation of O-GlcNAc. Collectively, these findings suggest that O-GlcNAc is an essential signaling element controlling ERM family proteins involved in OVCAR-3 cell migration.
Insights
O-GlcNAcylation (O-GlcNAc) regulates ovarian cancer cell migration by affecting ERM proteins. Increased O-GlcNAc reduces cell migration and membrane protrusion, suggesting a role in metastasis.
Area of Science:
- Biochemistry
- Cell Biology
- Cancer Research
Background:
- O-GlcNAcylation (O-GlcNAc) is a post-translational modification that competes with phosphorylation in cell signaling.
- O-GlcNAc plays a role in cancer metastasis.
Purpose of the Study:
- To investigate the role of O-GlcNAc in lysophosphatidic acid (LPA)-induced ovarian cancer cell (OVCAR-3) migration.
- To explore the relationship between O-GlcNAc and ERM protein modification in OVCAR-3 cells.
Main Methods:
- Studied O-GlcNAc and phosphorylation levels of ERM proteins in OVCAR-3 cells.
- Assessed the impact of O-GlcNAc accumulation on LPA-induced OVCAR-3 cell migration and membrane protrusion formation.
Main Results:
- O-GlcNAc modification of ERM proteins was inversely correlated with their phosphorylation.
- Accumulation of O-GlcNAc reduced LPA-induced membrane protrusion and OVCAR-3 cell migration.
Conclusions:
- O-GlcNAc is a key regulator of OVCAR-3 cell migration.
- O-GlcNAc influences ERM protein function, impacting cell motility and metastasis potential.
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