Programmed Death Ligand-1 (PD-L1) Regulated by NRF-2/MicroRNA-1 Regulatory Axis Enhances Drug Resistance and Promotes Tumorigenic Properties in Sorafenib-Resistant Hepatoma Cells
Dong Li*1, Fei-fan Sun*1, Dan Wang*1, Tao Wang*, Jing-jing Peng*, Jian-Qiong Feng*, Hua Li*,
Chao Wang†, Dai-jun Zhou*, Hong Luo*, Zeng-qiang Fu*, Tao Zhang*
Oncology Research, Vol.28, No.5, pp. 467-481, 2020, DOI:10.3727/096504020X15925659763817
Abstract Sorafenib, a multityrosine kinase inhibitor, is a standard treatment for advanced hepatocellular carcinoma
(HCC), but the clinical response to sorafenib is seriously limited by drug resistance. Programmed death ligand-1
(PD-L1) is one of the most important inhibitory molecules involved in tumor immune evasion. Recently, it
has been reported that PD-L1 could play crucial roles in drug resistance of many kinds of cancers. However,
the expression, function, and regulation of PD-L1 in sorafenib-resistant hepatoma cells remain unclear. In this
study, we reported that PD-L1 was overexpressed in sorafenib-resistant hepatoma cells, and shRNA-mediated
PD-L1 depletion attenuated drug… More >