Knockdown of Nedd8 ‑conjugating enzyme UBE2M suppresses the proliferation and induces the apoptosis of intrahepatic cholangiocarcinoma cells.

Knockdown of Nedd8‑conjugating enzyme UBE2M suppresses the proliferation and induces the apoptosis of intrahepatic cholangiocarcinoma cells. Oncol Rep. 2019 Sep 20;: Authors: Zhao B, Gao C, Shi D, Mao J, Zhao J, Guo L, Guo J, Jiao Z Abstract As an important regulator of neddylation, neural precursor cell expressed developmentally downregulated 8 (Nedd8)‑conjugating enzyme E2M (UBE2M) mediates cullin neddylation. Upregulation of the neddylation pathway is associated with tumor progression in intrahepatic cholangiocarcinoma (ICC). The present study was designed to assess the effects of Nedd8‑conjugating enzyme UBE2M knockdown on intrahepatic cholangiocarcinoma cells, and to determine the potential underlying mechanisms. UBE2M and associated protein expression levels were determined via immunohistochemistry and western blotting. ICC cells were transfected with short hairpin RNA to knockdown UBE2M expression. Cell Counting Kit‑8 and colony formation assays, and xenograft experiments were used to examine cell viability and colony survival in vitro, and tumor formation in vivo. Survival was evaluated using Kaplan‑Meier analysis and log‑rank tests. Patients with ICC presenting high expression of UBE2M exhibited worse accumulative recurrence and overall survival compared with patients with low expression. Knockdown of UBE2M expression led to a decrease in the viability and clonogenic survival of QBC939 and HUCCT1 cells, and s...
Source: Oncology Reports - Category: Cancer & Oncology Tags: Oncol Rep Source Type: research