The disclosure of the preset invention relates to a new method for preventing or treating tumor progression or tumor recurrence comprising administering to a subject in need thereof a therapeutically effective amount of an agent disrupting Musashi-1 (MSI1)/Argonaute 2 (AGO2) interaction. A composition or pharmaceutical composition for preventing or treating tumor progression or tumor recurrence is also provided, which comprises an agent disrupting Musashi-1 (MSI1)/Argonaute 2 (AGO2) interaction.
