NCAM and attached polysialic acid affect behaviors of breast epithelial cells through differential signaling pathways
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View abstract on PubMed
Summary
This summary is machine-generated.Neural cell adhesion molecule (NCAM) and polysialic acid (polySia) are upregulated in breast cancer and promote epithelial-mesenchymal transition (EMT). Their aberrant expression drives tumor progression by activating key signaling pathways.
Area Of Science
- Biochemistry
- Cell Biology
- Oncology
Background
- Neural cell adhesion molecule (NCAM) is a cell surface glycoprotein and a major target for polysialic acid (polySia) modification.
- Polysialylated NCAM is prevalent in cancers but scarce in normal adult tissues, suggesting a role in tumorigenesis.
- The specific function of NCAM hypersialylation in epithelial-mesenchymal transition (EMT) is not well understood.
Purpose Of The Study
- To investigate the role of NCAM and polysialic acid in breast epithelial cell behavior.
- To elucidate the signaling pathways involved in NCAM-mediated EMT.
- To clarify the significance of polysialylated NCAM in cancer development.
Main Methods
- Western blot analysis to assess protein expression and activation.
- Investigating signaling pathways including β-catenin/slug, EGFR, and STAT3.
- Studying the effects of NCAM and polySia modification on cell proliferation, migration, and adhesion.
Main Results
- NCAM and polysialylated NCAM are upregulated in breast cancer cells and during EMT in normal breast epithelial cells.
- Overexpression of NCAM-140 induces EMT, enhancing proliferation and migration via the β-catenin/slug pathway.
- PolySia modification on NCAM influences cell adhesion and motility through the EGFR/STAT3 pathway.
Conclusions
- NCAM and polysialic acid play critical roles in modulating breast epithelial cell behaviors, including EMT.
- Aberrant regulation of polysialylated NCAM contributes to tumor progression.
- Understanding these mechanisms highlights the importance of polysialylated NCAM in cancer development.
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