engleski

DISTINCT GD3 EXPRESSION IN BREAST CANCER SUBPOPULATIONS AFTER NOVEL THIENO[2,3-B]PYRIDINE DERIVATIVE TREATMENT

Objectives: The goal of this study was to determine GD3 expression after treatment with the novel thieno[2, 3-b]pyridine derivative, by focusing on CD44+/CD24- CSCs, CD44- epithelial cells, as well as CD44+/ CD24+ hybrid cells. Methods: The MDA-MB-231 cell line was treated with 3-amino-N-(3-chloro-2- methylphenyl)-5-oxo-5, 6, 7, 8-tetrahydrothieno[2, 3- b]quinoline-2-carboxamide (compound 1). Cells were plated onto six-well plates and treated with 2 M compound 1 for 48 h. Following this, cells were stained with anti-GD3, anti-CD44 and anti-CD24 antibodies, and then analyzed via flow cytometry. The acquisition of data of triple-stained samples was done by a BD Accuri C6 cytometer (BD Biosciences) and analyzed with the FlowLogic Software. Results: Treatment of MDA-MB-231 cells with compound 1 has led to a reduction of the expression of GD3 in CD44+/CD24- CSCs, as well as CD44- epithelial cells. GD3 expression in CD44+/CD24+ hybrid cells was not significantly reduced. Conclusion: Due to its ability to reduce GD3 expression in different breast cancer subpopulations, compound 1 has a potential to be used in the treatment of triple-negative breast cancer.

GD3, karcinom dojke, tieno piridin

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