Aim
Cancer stem cells (CSCs) are associated with tumorigenesis, recurrence, and metastasis. Cell-cell communication via gap junctions (GJs) between metastatic cancer cells and astrocytes is necessary for brain metastasis. Agents targeting communication between CSCs and astrocytes are expected to suppress brain metastasis. Materials and
Conclusion
The anti-cancer stem cell agent, AS602801, is a potential drug candidate against brain metastasis.
Methods
Using the A549 CSC, a cancer stem-like cell derived from A549, we examined the effect of AS602801, an anti-cancer stem cell agent whose safety has been confirmed in a phase 2 clinical trial, on GJ communication and connexin expression using a dye-transfer assay and immunoblot analysis, respectively.
Results
AS602801 specifically suppressed cell-cell communication in A549 CSCs without any suppression of GJ communication in astrocytes; it also decreased the expression of connexin 43, a constituent of GJs, in A549 CSCs.