β-carotene up-regulates RARβ in human neuroblastoma cells.
RARβ regulates anti-cancer stem cell effect of β-carotene by down-regulating DLK1 expression in human neuroblastoma cells.
β-carotene enhances binding of RARβ to the DLK1 promoter.
The β-carotene-mediated inhibition of self-renewal capacity in human neuroblastoma cells is regulated by RARβ.