The present invention relates to a process for controlling at least one androgen receptor- (AR-) regulated mechanism in mammalian cells under histone-phosphorylating conditions, said process comprising allowing at least one inhibitor with specificity for at least one protein kinase C-related kinase (PRK) to act on said at least one PRK, thereby modulating, preferably down-regulating, the activity of said at least one PRK and optionally blocking said at least one androgen receptor-regulated mechanism in said mammalian cells.