Doxorubicin selectively induces apoptosis through the inhibition of a novel isoform of Bcl ‑2 in acute myeloid leukaemia MOLM‑13 cells with reduced Beclin 1 expression.

Doxorubicin selectively induces apoptosis through the inhibition of a novel isoform of Bcl‑2 in acute myeloid leukaemia MOLM‑13 cells with reduced Beclin 1 expression. Int J Oncol. 2020 Apr 23;: Authors: Vu M, Kassouf N, Ofili R, Lund T, Bell C, Appiah S Abstract The overexpression of anti‑apoptotic Bcl‑2 in acute myeloid leukaemia (AML) may contribute to difficulties in eradicating these cells during chemotherapy. In the present study, doxorubicin (Dox) was evaluated for its potential to induce selective apoptotic cell death in AML MOLM‑13 cells and to modulate autophagy through Bcl‑2 and Beclin 1 protein expression. Annexin V/propidium iodide and 5(6)‑carboxyfluorescein diacetate succinimidyl ester (CFSE) flow cytometric analyses were conducted to determine the effects of Dox on cell death and cell proliferation, respectively, following 48 h of co‑incubation with AML MOLM‑13 or U‑937 monocytic cells. The protein expression levels of Bcl‑2 and Beclin 1 in untreated and treated cells were quantified by western blot analysis. Dox reduced the viability of MOLM‑13 cells partly by inhibiting cell division and inducing cell apoptosis. Dox demonstrated a level of selectivity in its cytotoxicity against MOLM‑13 compared to U‑937 cells (P<0.05). Dox induced a significant decrease in Beclin 1 protein levels in MOLM‑13 cells without significantly affecting the protein levels in U‑937 monocytes. A nove...
Source: International Journal of Oncology - Category: Cancer & Oncology Authors: Tags: Int J Oncol Source Type: research