体外研究 |
RX-5902 (0-10 μM; 72 hours) is active against cell lines of all TNBC molecular subtypes and is active against cell lines with mutations in p53, RB1, CDKN2A, and loss of PTEN. RX-5902 (20-100 nM; 24 hours) treatment results in a dose-dependent increase in tetraploid cells, consistent with induction of G2–M cell-cycle arrest. RX-5902 (0-100 nM; 72 hours) exhibits no significant induction of apoptosis in cell lines resistant to the antiproliferative effects of RX5902. But in sensitive cells, the observed activation of apoptosis begins at 24–48 hours and reaches a peak at 72 hours. The induced apoptosis is greasted with a dose of 100 nM. RX-5902 (0-100 nM; 24 or 48 hours) decreases MCL-1 expression as a dose-dependent manner in TNBC cell lines sensitive to RX-5902. RX-5902 inhibits cell growth, MDA-MB-231, Caki-1, UMRC2, PANC-1, A549, MKN-45, HepG2, HCT116, HT29, PC-3, U251, HeLa, SK-MEL-28 and OVCAR-3 with IC50 values range from 0.01 μM to 0.021 μM in the growth inhibition of cancer cells.
Cell Viability Assay
Cell Line: |
MDA-MB-231, HCC1806, Hs578t, CAL-85-1, HCC38, HCC1187, MDA-MB-436, CAL-51, HCC38, BT549, MDAMB-157, HDQ-P1, HCC1395, MDA-MB-436, HCC1937, CAL-120, BT20 cells |
Concentration: |
0-10 μM |
Incubation Time: |
72 hours |
Result: |
Displayed the average IC50 of the cell lines sensitive to RX-5902 treatment is 56 nM. |
Cell Cycle Analysis
Cell Line: |
Sensitive (MDA-MB-231 and HCT1806) and two resistant (MDA-MB-436 and CAL-120) cell lines |
Concentration: |
20 nM; 100 nM |
Incubation Time: |
24 hours |
Result: |
Led to G2-M cell-cycle arrest at sensitive cells. |
Apoptosis Analysis
Cell Line: |
Sensitive (MDA-MB-231 and HCT1806) and two resistant (MDA-MB-436 and CAL-120) cell lines |
Concentration: |
0-100 nM |
Incubation Time: |
24-72 hours |
Result: |
Induced cell apoptosis in sensitive cell lines and peaks at 72 hours. |
Western Blot Analysis
Cell Line: |
Cal-51, HCC-1806, and MDA-MB-468 cells |
Concentration: |
20 nM; 100 nM |
Incubation Time: |
24 hours |
Result: |
Induced inhibition of MCL-1 expression in Cal-51, HCC-1806, and MDA-MB-468 cells. |
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