Use of a boron cluster as transmembrane carrier

A method of treating cancer in a subject in need thereof, the method comprising:

• providing an anticancer drug which is cationic, zwitterionic or not charged;
• providing a halogenated boron cluster, wherein,
• the halogenated boron cluster has a globular shape or an ellipsoidal shape,
• the halogenated boron cluster is a mononuclear halogenated boron cluster, and
• the halogenated boron cluster is free of a pendant group, the pendant group being defined as any group which is linked to a core of the halogenated boron cluster except for hydrogen (H), a halogen (X), a methyl (—CH3), and/or the anticancer drug;
• mixing the halogenated boron cluster and the anticancer drug so that the halogenated boron cluster and the anticancer drug together form a non-covalent complex mixture;
• and
• administering the non-covalent complex mixture to the subject in need thereof so that the boron cluster acts as a transmembrane carrier to transport the anticancer drug across a membrane of a cell or a vesicle in the subject in need thereof.