LncRNA-H19 inhibits apoptosis of acute myeloid leukemia cells via targeting miR-29a-3p.

Abstract

To explore the influences of long non-coding ribonucleic acid (lncRNA)-H19 on the proliferation and apoptosis of acute myeloid leukemia (AML) cells via the Wnt signaling pathway. Blood samples were collected from 40 AML patients. The AML cells were cultured. Cell counting kit-8 (CCK-8) was used to detect cell proliferation and flow cytometry was applied to analyze cell cycle and determine the apoptosis rate. Moreover, the action target of lncRNA-H19 was detected through a dual-luciferase reporter assay and Western blotting was performed to detect the change in protein level. The expression of lncRNA-H19 in AML patients was markedly higher than that in normal controls and compared with human embryonic kidney (HEK)-293T cells, AML cell Kasumi-1 exhibited an increased lncRNA-H19 expression. LncRNA-H19 could promote cell proliferation, but suppress cell apoptosis. It is bound to micro RNA (miR)-29a-3p in a targeted manner. and the expression level of miR-29a-3p in AML patients was prominently lower than that in normal controls. After miR-29a-3p was inhibited, the expression of intranuclear β-catenin was significantly increased and the Wnt/β-catenin pathway critical molecules T-cell factor (TCF) and lymphoid enhancer factor 1 (LEF1) were evidently up-regulated after the down-regulation of miR-29a-3p. LncRNA-H19 targets miR-29a-3p to promote the proliferation of AML cells, but inhibit the apoptosis through the Wnt/ β-catenin signaling pathway.