Project description:Overexpression of SOX4 in various kinds of cancers specimen was associated with poor prognosis of patients; however, the role of SOX4 in angiogenesis or tumor microenvironment modulation remains unclear. Therefore the endogenous SOX4 was knockout and the differential gene expression between Hep3B and Hep3B SOX4-/- cells were examined via genechip. We found that the differentially expressed genes, EzH2, a SOX4-associated partner, and CXCL12, were repressed in Hep3B SOX4-/- cells compared with parental Hep3B; these results were further assessed via qRT-PCR in Hep3B SOX4-/- versus Hep3B cells.
Project description:Human hepatic cell lines have been widely used as an in vitro model for the study of drug metabolism and liver toxicity. However, the validity of this model is still a subject of debate because the expressions of various proteins including drug-metabolizing enzymes (DMEs) in the cell lines can differ significantly from that of human livers. In the present study, we first conducted an untargeted proteomics of the microsomes of the cell lines HepG2, Hep3B, and Huh7 in comparison with human livers using a SWATH method. Furthermore, a targeted proteomic approach, named high-resolution multiple reaction monitoring (MRM-HR), was utilized to compare the expressions of pre-selected DMEs between human livers and the cell lines.