This invention discloses the application of
clozapine and its combination with
chemotherapeutic drugs in the preparation of drugs for treating triple-negative
breast cancer or
breast cancer stem cells, belonging to the field of
pharmaceutical technology. This invention experimentally verifies that
clozapine can effectively inhibit the growth of
breast cancer stem cells and has a strong growth-inhibiting effect on triple-negative breast
cancer cell lines, but has no growth-inhibiting effect on other types of breast
cancer cell lines and
normal tissue cells, thus it can be used as a treatment
drug for triple-negative breast
cancer. Simultaneously, the combination of
clozapine and
chemotherapeutic drugs can significantly inhibit the growth of triple-negative
breast cancer cells, and the
inhibitory effect is significantly better than that of
chemotherapeutic drugs alone.
Clozapine alone and the combination of clozapine and chemotherapeutic drugs significantly inhibited the growth of triple-negative breast cancer tumors in mouse models, successfully solving the problem of
drug resistance in triple-negative breast cancer caused by the inability of existing basic treatment drugs (chemotherapeutic drugs) to inhibit breast cancer stem cells.