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Hepatocellular carcinoma (HCC) is a highly heterogeneous malignancy. In the clinic, therapeutic resistance is largely attributed to tumor heterogeneity. Growing evidence indicates that cancer stem cells (CSCs) are the major source of tumor heterogeneity. Hence, uncovering the resistance mechanisms associated with CSC properties is essential for developing effective therapeutics. CSCs resemble embryonic stem cells. Embryonic development-related genes and signaling pathways are usually abnormally active and function as oncofetal drivers in HCC. Multiple strategies have been applied to identify oncofetal drivers. The mechanisms of CSC resistance could also provide reliable biomarkers to predict treatment failure. Precisely targeting these specific CSC properties may be effective in preventing or annihilating therapy resistance. This review provides an overview of drug resistance mechanisms associated with CSC traits and summarize therapeutic strategies against drug resistance.
Li et al. (Sat,) studied this question.