For western blot assays, cells were harvested in cold PBS solution, and protein lysates were extracted using RIPA buffer as described (11 (
link), 12 (
link)). After protein assay, equal amounts of proteins from each treatment were subjected to western blot assay with the antibodies indicated in the figure.
For real-time quantitative RT-PCR (qPCR) assays, cells were harvested in cold PBS solution, and total RNAs were extracted using the
TRIzol™ reagent (Invitrogen). After the cDNA synthesis, the qPCR reaction was conducted with an
SYBR Green-based PCR master mix (Bio-Rad) described in our publications (13 (
link), 14 (
link)). The house-keeping gene GAPDH was used as an internal control for data normalization.
For luciferase assay, cells were seeded in a 6-well plate overnight and then transfected with an empty reporter construct pGL3 or the human NR0B2 promoter-driven luciferase construct (hSHP-LUC) as described in our publication (14 (
link)). After treatment with kinase inhibitors or GW4064 overnight, cells were harvested for luciferase measurement, and the final readings were normalized with the relative levels of total proteins, as described in our publication (15 (
link)).
Zhu R., Tu Y., Chang J., Xu H., Li J.C., Liu W., Do A.D., Zhang Y., Wang J, & Li B. (2021). The Orphan Nuclear Receptor Gene NR0B2 Is a Favorite Prognosis Factor Modulated by Multiple Cellular Signal Pathways in Human Liver Cancers. Frontiers in Oncology, 11, 691199.